Bacterial Conjugation

Bacterial conjugation is one of the basic methods by which simple organisms, such as the single-celled bacterium, reproduce. It is a very basic form of copulation that often involves a transfer of DNA but no recombination following the said transfer. It occurs following the docking together of two bacteria, a donor and a recipient. It is sex in the bacterial world. The process of conjugation is made possible by â€Å"the presence of certain plasmids in the donor bacteria that possess genes for making the proteins involved in docking and transfer.† (The Columbia encyclopedia, Sixth Edition 2004) These plasmids are the ones carried forward from one bacteria to the other bacteria. A plasmid is an â€Å"extra-chromosomal† piece of bacterial DNA (deoxyribonucleic acid). Plasmids are maintained inside the bacterial cell, replicating fast enough until they are passed on to bacterial progeny as the bacteria divide. Plasmids are just like chromosomes. They are circular and essen tially double-stranded DNA.The distinct characteristics that set apart plasmids from chromosomes are in their size and the genes that they carry. Plasmids are much smaller in size than chromosomes. Plasmids carry only genes that are essential. Bacteria are an interesting group of organism. In order to better comprehend how bacteria multiplies, and replicates its genes, there is a need to understand its structure. Bacteria are â€Å"microscopic unicellular prokaryotic organisms characterised by the lack of a membrane-bound organelles.† (The Columbia encyclopedia, Sixth Edition 2004) Bacteria are remarkably adaptable to diverse environmental conditions: they are found in the bodies of all living organisms and on all parts of the earth — in land terrain and ocean depths, in arctic ice and glaciers, in hot springs, and even in the stratosphere. Most bacteria are of one of three typical shapes — rod-shaped (bacillus), round (coccus), and spiral (spirillum). The cytop lasm and plasma membrane of most bacterial cells are surrounded by a cell wall.In bacteria, the genetic material is organized in a continuous strand of DNA. This circle of DNA is localized in an area called the nucleoid, but there is no membrane surrounding a defined nucleus. In addition to the nucleoid, the bacterial cell may include one or more plasmids. Some bacteria are capable of specialized type of genetic recombination which involves the transfer of nucleic acid by individual contact, that is, the process of conjugation. Recombination involves a â€Å"process of shuffling genes by which new combinations can be generated.† (The Columbia encyclopedia, Sixth Edition 2004) Genetic recombination in bacteria may be mediated by transformation, transduction, or conjugation. In these methods, genetic transfers occur unidirectionally from donor to recipient bacteria and only a fraction of the genetic material of a donor cell is transferred to a recipient, which, on the other han d, contributes its cytoplasm as well as its entire genome. In conjugation, the genetic contribution of the donor (male) is incomplete and is genetically and physiologically determined.In so doing, â€Å"the system of conjugation is well adapted to providing information about the nature and organization of the bacterial chromosome as a whole as well as to the study of nuclear-cytoplasmic interactions. † (Burdette et. al. 1963) In E. coli bacteria, the transmissible sex factor responsible for the donor state, and thus for fertility, was called F, donor cells being F+ and recipient cell F-. From population of F+ cells, strains of a new type of donor called Hfr (for high frequency of recombination) were occasionally isolated.Both F+ and Hfr donors share the following characteristics that distinguish with F- recipients: they possess similar surface properties that enable them to pair specifically and to mate with F- cells with comparable efficiency; they have the actual or potenti al ability to transfer genetic determinants to recipients, although the nature of the determinants so transferred by the two types of donor may be of quite different kinds; each type of donor has the potentiality to mutate to the other or to the F- type; and both types are under the control of a specific genetic structure, the sex factor F.F functions as a genetic particle insofar as it is stably inheritable by progeny, is transmissible in crosses, and is the determinant of those properties that characterize donor cells. (Burdette et. al. 1963) The facts recounted above and the interpretations they have engendered may now be brought together to form a unified picture of the mating system in E. coli. The sexual differentiation of E. coli into males and females is genetically controlled by the presence or absence of a sex factor, F, that has the properties of an episome and is more akin in its behavior to temperate bacteriophage than to a normal genetic determinant.The propensities of male cells, in turn, are governed by the state in which the sex factor exists in them. F+ male cells, which harbor the sex factor in its autonomous state, preserve a continuous linkage group and, on conjugation, transfer only their sex factor and other extrachromosomal elements to females. They have the potentiality, however, to generate a spectrum of Hfr male types, each characterized by a linear, transferable chromosome the extremities of which are defined by the integration of the sex factor at one of a variety of chromosomal sites; only the proximal part of the linear chromosome is transferred with high efficiency.Such modified sex factors serve as efficient vehicles for the transport to female cells of their incorporated segments of male chromosome, with the result that stable, partial diploids for various regions of the chromosome can readily be synthesized. (Burdette et. al. 1963) Formation of the zygote extends from the initial collision between an Hfr and an F- cell to the completion of chromosomal transfer and comprises the stages of collision, effective contact formation, and chromosomal transfer.In interrupted mating, a number of different Hfr markers are selected, each is found to enter the zygotes at a different time that is specific for each marker under standard conditions. The times of entry of the various markers correspond to their order of arrangement on the chromosome and are proportional to their distances from O where O indicates the extremity (leading locus) which first penetrates the recipient cells during conjugation. The peculiarity of conjugation resides in the mechanism by which genetic transfer is accomplished.This is expressed by the fact that, when different selections are made, the different genetic characters of a given Hfr strain are transmitted to recombinants with different frequencies depending on their distances from O. The system thus lends itself to an original and convenient method of mapping, in terms of time of tran sfer. Moreover, mapping is greatly facilitated by the availability of a number of different Hfr strains that transfer different parts of the chromosome at high frequency. In all systems other than conjugation in E.coli, the only practical way of measuring the distance between genetic loci is by comparing the frequency with which recombination occurs between them. In conjugation two additional methods of measurement are available, in terms of transfer time and of the decay of P32 atoms, both of which are absolute and independent of the recombination process and so provide the means of interpreting recombinational events in physical terms. Therefore, bacterial conjugation’s significance in gene mapping exists in its capability to determine the precise positioning of genes on the genome. Studies concerning a peculiar bacterial strain, E.coli Hfr, which engaged in conjugation with surprising frequency, paved the way for its use in 21st century genetics. â€Å"By sundering conjug al bugs at various times during mating, geneticists Francois Jacob and Elie Wollman were able to determine that the male transferred a complete copy of its genome like one long piece of spaghetti. The implications of the notorious â€Å"coitus interruptus† experiment and the resulting â€Å"spaghetti hypothesis† were clear: by carefully monitoring the time at which each trait was transferred, the two researchers could determine the precise positioning of genes on the genome.In this way they plotted the first crude genomic map of a bacterium. † (Hirsch 1999, p. 145) References Burdette, WJ 1963, Methodology in Basic Genetics, Holden-Day, San Francisco. Hirsch, AE (1999, Spring). Of Flies, Mice and Men†, American Scholar, p. 145. Johnson, AD (2002, Spring). â€Å"Living with Microbes†, The Wilson Quarterly, pp. 42+. Rheinberger, HJ (ed. ) & Gaudilliere, JP 2004, Classical Genetic Research and Its Legacy: The Mapping Cultures of Twentieth-Century Geneti cs, Routledge, New York.

African-American Studies Essay

During the period between 1865 and 1900, the lives of many African Americans had changed in both political and social ways. They had a lifestyle transformation. Politically, African Americans were able to vote. As for socially, African Americans were beginning to be viewed as equals. African Americans were given the opportunity to vote. There opinion began to matter. As Alfred H. Ward expresses in his art black men waiting in a line, it means much more than a single file. Displaying the men dressed in different outfits and uniforms waiting to put in their opinion, their vote (Document A). Negroes were now being viewed as another person and another opinion needed. It was even expressed that one shall not be denied a vote for their race (Document C). This is yet again another prime example of the African Americans new progress in a political aspect. Though it may seem a simple and smooth change it wasn’t a golden path through the transformation, some still could not accept the fact that black deserve to have the right to vote. Dramatic words and publication were existent during the late 19-century, even a cartoon was published of an African American man dying, and reason of death being he used his right to vote (document F). Soon the African Americans had their heads soaring high, some people were finally giving them some social respect. Along with the 14th amendment supporting their new freedom things seemed to be changing. Simply re stated â€Å" no state shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States† just with the first statement, African Americans are entitled to even more rights (Document B). Again, the civil rights act of 1875, this enacted that all persons of the U. S. shall be entitled to full enjoyment of accommodations, advantages, and privileges of inns, public water and entertainment. Also stating that this is applicable to every citizen of every race (Document D). Though yet again things were not always so positive and equal. â€Å"Jim crow laws of the deep south† created many restrictions and much un fair treatment. To the extent of marriages between white and blacks were prohibited in Florida (Document H). In Georgia one could not burry an African American where whites were buried (Document H). Also, in Mississippi, discussion of or defending for social equality would immediately be guilty of a misdemeanor (Document H). Some cases so harsh that blacks who would assert their rights would face unemployment, eviction, and sometimes physical harm. From evidence shown the African Americans had dramatic reconstruction stages in both political views along with social views. They received some respect and rights of being created equal. They also received their right to vote. Though, it didn’t all become easy and perfect they had much progress of reconstruction. Many changes were made. As many lives were transformed.

Commercialization in Education Essay

Short Essay on Commercialization of Education â€Å"No, I want my child to study. I want him to get what I did not get in my childhood. I will give him education even if I have to pay a huge amount of money to the educational institutions† These are some lines which are said by the parents of this modern era. Every parent tries their level best to provide quality education to his ward and to fulfill their dreams they spend a lumpsum amount of money so that their ward is able to  study in the best educational institution. Schools, coaching centers, educational institutions, etc. , are prospering day by day. It seems as if they will give rise to a new industry named  educational industry. They charge lumsum amount of money to provide education and the parents blindly spend such amount to educate their ward. But the question is– ARE THESE INSTITUTIONS PROVIDING EDUCATION OR THEY ARE DOING BUSINESS IN THE NAME OF EDUCATION In this modern era, EDUCATION is no more giving knowledge or teaching a child so that he/she can know more and more about the society. Rather it has converted into a business in almost every institution charge a huge amount in return of the facilities they provide. In the best educational institutions of the world, donations are taken in return of registering an average student and giving him education. Advertisements made by the schools, colleges, coaching’s, etc. is a way of getting more and more customers in form of students and surely their business is prospering day by day. Basically the parents are being cheated in the name of education. Even if it gives rise to a new industry, this industry will not be able to fulfill its social responsibility towards the society. The system of education in the world has to improve; the meaning of education has to improve. Providing education should not be limited to providing lumsum amount of money. The meaning should be giving quality education to the youth to develop the world. This is not what â€Å"I† as an individual or â€Å"you† as an individual can do. For this many â€Å"I† have to come together to give rise to a â€Å"we† and this â€Å"we† will be able to convey this message to the world.

What is Gnosticism What current expressions do you see today Essay

What is Gnosticism What current expressions do you see today - Essay Example "The demiurge may be depicted as an embodiment of evil, or in other instances as merely imperfect and benevolent as its inadequacy permits". Along with the demiurge exists a good supreme being, however remote and distant. In order to free oneself from the material world, one must find gnosis or "spiritual knowledge available to all through direct experience or knowledge". Some sects of Gnostics believe Jesus of Nazareth was sent to earth to bring gnosis, some believe he was sent to teach gnosis, and still others believe that he was just a man. In the first centuries before Christ, Gnosticism was popular in the Middle Eastern and Mediterranean areas. It was, however, suppressed in the fourth century by the Roman Empire. In the middle ages, many converted to Islam. "Gnostic ideas became influential in the philosophies of various esoteric mystical movements of the late 19th and 20th centuries in Europe and North America, including some that explicitly identify themselves as revivals or even continuations of earlier gnostic groups". Unlike Judaism, Christianity, and a lot of Pagan systems, the soul is not held by a Supreme Power. Gnosticism places, "the salvation of the soul merely in the possession of a quasi-intuitive knowledge of the mysteries of the universe and of magic formulae indicative of that knowledge. Gnostics were "people who knew", and their knowledge at once constituted them a superior class of beings, whose present and future status was essentially different from that of those who, for whatever reason, did not know (Arendzen, 2007)." The Catholic Encyclopedia offers that "A more complete and historical definition of Gnosticism would be": A collective name for a large number of greatly-varying and pantheistic-idealistic sects, which flourished from some time before the Christian Era down to the fifth century, and which, while borrowing the phraseology and some of the tenets of the chief religions of the day, and especially of Christianity, held matter to be a deterioration of spirit, and the whole universe a depravation of the Deity, and taught the ultimate end of all being to be the overcoming of the grossness of matter and the return to the Parent-Spirit, which return they held to be inaugurated and facilitated by the appearance of some God-sent Saviour. (Arendzen, 2007) There are essentially two great components that comprise the basis of Gnostic thought. The first is astrology. Astrology involved the power and influence of certain planetary bodies or symbols. "The greatness of the Seven -- the Moon, Mercury, Venus, Mars, the Sun, Jupiter, and Saturn -- the sacred Hebdomad, symbolized for millenniums by the staged towers of Babylonia, remained undiminished. They ceased, indeed, to be worshipped as deities, but they remained archontes and dynameis, rules and powers whose almost irresistible force was dreaded by man. Practically, they were changed from gods to devas, or evil spirits" (Arendzen, 2007). The second major component is magic, or "the power ex opere operato of weird names, sounds, gestures, and actions, as also the mixture of elements to produce effects totally disproportionate to the cause" (Arendzen, 2007). Various doctrines to Gnostic theories exist. These included Cosmogony, Sophia-Myth, Soteriology, Eschatology, Doctrine of the Primeval Man, and the Barbelo. Various rites also exist, including Baptism, Confirmation, the Eucharist, the

New Zealand Tourism Essay Example | Topics and Well Written Essays - 1250 words

New Zealand Tourism - Essay Example This is because people falling in the above age limit are known to make frequent visit to places and destinations. Some of the social marketing elements which could be sued for the purpose are promotional campaigns like public announcements, billboards, media events and community outreaches. The importance of video marketing and blog marketing and social networking sites could also be used for the purpose. This would allow a two way communication process between the authorities and the general public. The advantage of social marketing is that the viewers would be able to provide their views and suggestions regarding their needs and requirements based on which the authorities would be able to provide the facilities. Target market segments and stakeholders Natural disaster has great impact on the tourism and also on the economic condition of the country. Thus effective marketing strategy is very essential to communicate with people over the globe that the country is ready for business. For successfully implementing the strategies proper evaluation of the target market and the stakeholders analysis is very important for NZ Tourism. ... Figure 1: Visitor arrival trend rise with income (Source: Local Government New Zealand, 2011, p. 9) The top two markets which has great trend of tourism attraction for New Zealand are China and Australia which are needed to be focused for marketing of the Tourism activity. Figure 2: China and Australia are the Key market (Source: Local Government New Zealand, 2011, p. 10) The interactive segments who are involved in the process of engagement and interaction with respect towards the social, cultural, environmental of these potential markets are the main target segment for the tourism industry. The primary stakeholders for the tourism of New Zealand may be divided into three major categories- 1. Industry groups like Hotel Council of the country, TIANZ and Inbound Tour Operators Council of the country. 2. Tourism businesses like Air New Zealand and Tourism Holdings Limited and 3. Public organizations like Department of Conservation and Tourism Research Councils. International stakeholde rs of the country include industries like hotel, transport and travel companies who are supplying tourists for New Zealand (Inter brand, 2005, p. 57-58). With time better relationship of the country with the global market and effective communication system will increase the number of stakeholders if the marketing communication strategy can be effectively developed and marketed. Role played by social marketing elements The field of tourism has been changing rapidly over the years. This holds true for the country of New Zealand which has been struck by natural disasters like earthquakes, volcanic eruptions and landslides etc. On account of the above aspects the tourism sector of the nation has suffered a setback and has been demonstrating

U.S. criminal justice Essay Example | Topics and Well Written Essays - 1750 words

U.S. criminal justice - Essay Example The objectives of the criminal justice system ensure safety of the society through justice for individual, personal liberty and the right to due process.All these objectives make it absolutely certain that rule of law prevail and justice is served. The 17,500 law enforcement agencies of the country are trying very hard to achieve these objectives (Hudzik, J. 2010).The extent to which the United States criminal justice system has achieved these goals. It has been successful in securing the rights of the individuals. United States of America is considered a just society all over the world because of its justice system however there are many improvements that can be made to better beef up the process of criminal justice. But at the same it is important to understand what individuals demand from the criminal justice system and how these demands are fulfilled. Goals of individuals include social justice, equality before law, protection of society and freedom for fear. All these goals safe guard the interest of the individuals. The extent to which these goals are covered by U.S. criminal justice system is difficult to say because some of these goals are of conflicting nature but at the same time we cannot dismiss the criminal justice system of the country. United States criminal justice system is doing a very good job in allowing personal liberty and the right to due process. All these goals are being achieved and one can say this because all the procedures are followed and there are less loop holes in the system. The 4th, 5th, 6th and 8th amendments secure personal rights and liberties, and protect citizens from unreasonable searches (Howard, J. 2009). There are still roam for injustices but United States criminal justice system is going in the right direction in fulfilling its goal. Prejudice is an element that cannot be ignored and that restrains the objectivity of the criminal justice system. This has been seen in the case of minorities because minorities do not g et proportional representation in courts and that affects the criminal justice system (Santiago, C. 2011). This is another way in which the goal of individual justice is not fully achieved by the criminal justice system. The goal of human dignity is sometimes not fully achieved under the criminal justice system of the country. The reason being that maximum protection prison face mistreatment and also the criminals convicted of hideous crimes like child abuse or serial killing face treatment that is not fit for human (Sociology of Criminal Justice, 2010). Human dignity is important for even the cruelest of criminals but it is hard to attain this goal given that the emotions of guards and other prison officers also come into play. This is one grey area where attention is needed. There are both conflicts and similarities between the goals of the criminal justice system and the goals of the individual. The criminal justice system cares about individuals so that no one is wrongfully conv icted. This is especially important to ensure that everyone gets a fair chance to trail and all the rights of the individuals are safeguarded. Personal liberty is one of the goals of criminal justice system that conflicts with the goal of the individual for protection of society. Society may need protection more than ever in this age of terrorism. Getting warrants from the proper authorities might take long and that can allow the terrorists to come into action and as a result valuable lives are put to risk. The security risk in United States is so much that people protested on the trial of 9/11 attacks that were being held in Newburg (Livingston, B. 2010). This shows the conflict between goals of individual and goal of criminal justice. Justice for individual is another goal criminal justice system that clashes with the idea of social justice in some ways. When a murderer is

Starbucks Case Study Example | Topics and Well Written Essays - 3000 words

Starbucks - Case Study Example However, today the luxury industry has seen some dramatic changes in changed market conditions. Increase in global competition has changed supply and demand patterns for the market according to Roux and Floch (1996) whereas Arghavan and Zaichkowsky( 2000) feel that it is counterfeited luxury goods that has changed the market conditions. Some feel that economic hardships have also changed market conditions. The changed market conditions have raised new challenges for marketing strategists of luxury brands. One thing is clear that no brand can claim that it is recession-proof even though one can find many instances where luxury brands have done well during recession. For instance, Rolls-Royce reported an increase in its in sales in 2008 and Hermes, a designer bag maker is also faring well. Luxury brands have to discover new and different ways in order to stay ahead. Luxury goods marketing men have to become more creative and cost conscious in order to make a success of the brands. Patrick Chalhoub, Joint CEO, Chalhoub Group, feels that in times of recession companies must have the ability to adapt and compete in the changed circumstances. According to him, "Times of recession bring an emphasis on change for both product and brand. Some of them may not have the capacity to adapt, compete or reinvest, while others will thrive in these circumstances†. Starbucks can be taken as an example on how things can go wrong in changed conditions. Starbucks Corporation that was founded in 1971 has its headquarters in Seattle, Washington. This chain of coffee houses saw tremendous growth and success and by 2007 had more than 15000 stores around the world. But suddenly in 2007 its performance slipped and its share prices began to decline. A combination of reasons, recession and overexpansion among them, was the cause of this decline. It had to bring back Howard Schultz to revive the company. This paper discusses the challenges of

Self Analysis Essay Example | Topics and Well Written Essays - 1000 words

Self Analysis - Essay Example In this regard, upon close review and evaluation of the skills honed and improved from the course modules, I am hereby detailing the personal progress made in writing through the student learning outcomes and written communication hallmarks, as required. Effective writing needs more than rules to compose a fairly effective essay. Rules are merely practical guides that give the writer direction and focus on the concepts and theories which he already has a competent grasp of. Writing, to be effective, has to consider other factors such as the audience or the reader, the writing process itself, and even the elements of communication. This course enabled me to be exposed to effective writing structures composed to suite various purposes and readers. Thereby, I put a score of 9. 2) Engage in a writing process that includes exploring ideas, considering multiple points of view, developing and supporting a thesis, revising with the help of peer and instructor feedback, editing, and proofreading. One of the rules in effective writing is to always check your work for accuracy and completeness. This is always true. The method of seeking the assistance of peers and the instructor for feedback is effective in evaluating and reviewing my work. Due to the fast pace of work that needs to be completed on time, there are also tendencies to fail checking the accuracy and completeness once work is accomplished. Contemporary writing already provides appropriate utilization of technology to facilitate checking; the grammar and spelling check provided in Word software programs used for typing and encoding, recognize the need to change and edit words which are not properly punctuated. However, it is still effective to use peer review and instructor’s comments for second and third opinions regarding the ideas explored and compliance to required structure. The feedback mechanism is critical in making corrective actions in cases of weaknesses and mistakes. This tool is

Gender Roles in Manuel Puig's The Kiss of the Spider Woman Essay

Gender Roles in Manuel Puig's The Kiss of the Spider Woman - Essay Example So, the author continues, "En cambio, un homosexual, con fijacin femenina, si, todava, puede defender esa ideologa, porque, como desea ser mujer, pero no puede realizar la experiencia de sea mujer, no puede llegar a desengaarse y sigue el engavio, en el sueiio de que la realizacin de la mujer esta en encontrar un hombre que la va a guiar y que se va a ocupar de ella, lo cual es buscar un padre y no un compaero" (Osario, p. 53). Puig subtly unfolds another aspect of his project: writing about a homosexual. It does not stop surprising us how or why this aspect of his writing has to be grounded with an explanation "beforehand!" That is, by framing the homosexual character of the novel, Molina, first, as "a feminine character who still believed in the existence of a superior man" and, then, as a "homosexual, with feminine fixations," Puig is showing us a certain anxiety regarding homosexuality in his writing. Puig's presentation of Molina is an excuse. It is important to highlight this particular moment in the author's explanation (or excuse) for the homosexual subject because, after presenting such a brilliant feminist reading of the homosocial valorisation of the superior macho, he almost obsessively and uncritically positions the homosexual within the heterosexual matrix as produced by the Oedipal complex--the Freudian "structure" of which he is critical in the footnotes of El beso. How do we reconcile both of the author's positions--on the one hand, his more challenging perspective that informs the construction of masculinity as the fantasy of the homosocial; on the other hand, a reductive and misogynist reading of male homosexuality as a desire to become and appropriate .the "feminine" Moreover, how do we read homosexuality outside the Oedipal complex When we consider the question of sexuality in the text, we must look not simply at writing about homosexual themes or a homosexual character in a "popular" novel, but--and more importantly--the author's own gayness. A consideration of sexual difference as epistemology illuminates our critical reading of a text (Sedgwick, 1991). Along these lines, a reading of El beso de la mujer araa must not only focus on the construction of Molina's sexual identity, the homosexual "with feminine fixations" as a performer of transvestism; but, also, analyze the transvestitic performance of Valentin as a Marxist. This essay will show that ideology--in this case, oppositional revolutionary politics-signals a transvestitic performance; and, that this ideological transvestism necessarily sublimates the homoerotics of any heterosexual male encounter. That is, every male "event" connotes a hidden homosexual embrace. The politics of denying this embrace shamelessly produce the language of sexism and homoph obia. The structure of the El beso de la mujer araa is simple: Valentin, a political prisoner, and Molina share a cell where Molina's retelling of B-movies make the time spent there easier. Before looking at some of the stories told by the prisoners, I would like to evaluate the importance the prison takes as a site of narration. One cannot help thinking of an Arcipreste de Hita or a Cervantes who wrote his masterpiece in/from prison. The architectural design of a prison influences Molina's fantastic story-telling: the close walls must be transcended with complex narratives and performances (Merrim, 1981). If spaces can be labelled "heterosexual," "lesbian," "educational,"

Pin Hole Camera Essay Example for Free

Pin Hole Camera Essay A pinhole camera is a simple camera without a lens and with a single small aperture – effectively a light-proof box with a small hole in one side. Light from a scene passes through this single point and projects an inverted image on the opposite side of the box. The human eye in bright light acts similarly, as do cameras using small apertures. Up to a certain point, the smaller the hole, and the sharper the image, but the dimmer the projected image. Optimally, the size of the aperture should be 1/100 or less of the distance between it and the projected image. Because a pinhole camera requires a lengthy exposure, its shutter may be manually operated, as with a flap made of light-proof material to cover and uncover the pinhole. Typical exposures range from 5 seconds to several hours. A common use of the pinhole camera is to capture the movement of the sun over a long period of time. This type of photography is called Solargraphy. The image may be projected onto a translucent screen for real-time viewing (popular for observing solar eclipses; see also camera obscura), or can expose photographic film or a charge coupled device (CCD). Pinhole cameras with CCDs are often used for surveillance because they are difficult to detect. Pinhole devices provide safety for the eyes when viewing solar eclipses because the event is observed indirectly, the diminished intensity of the pinhole image being harmless compared with the full glare of the Sun itself. In the 10th century, Ibn al-Haytham (Alhazen) wrote about naturally-occurring rudimentary pinhole cameras. For example, light may travel through the slits of wicker baskets or the crossing of tree leaves. (The circular dapples on a forest floor, actually pinhole images of the sun, can be seen to have a bite taken out of them during partial solar eclipses opposite to the position of the moons actual occultation of the sun because of the inverting effect of pinhole lense s.) Alhazen published this idea in the Book of Optics in 1021 AD. He improved on the camera after realizing that the smaller the pinhole, the sharper the image (though the less light). He provides the first clear description for construction of a camera obscura (Lat. dark chamber). In the 5th century BC, the Mohist philosopher Mo Jing in ancient China mentioned the effect of an inverted image forming through a pinhole. The image of an inverted Chinese pagoda is mentioned in Duan Chengshis (d. 863) book Miscellaneous Morsels from Youyangwritten during the Tang Dynasty (618–907). Along with experimenting with the pinhole camera and the burning mirror of the ancient Mohists, the Song Dynasty (960–1279 CE)Chinese scientist Shen Kuo (1031–1095) experimented with camera obscura and was the first to establish geometrical and quantitative attributes for it. In the 13th century AD, Robert Grosseteste and Roger Bacon commented on the pinhole camera. Between 1000 and 1600, men such as Ibn al-Haytham, Gemma Frisius, andGiambattista della Porta wrote on the pinhole camera, explaining why the images are upside down. Around 1600 AD, Giambattista della Porta added a lens to the pinhole camera. It was not until 1850 AD that a Scottish scientist by the name of Sir David Brewster actually took the first photograph with a pinhole camera. Up until recently it was believed that Brewster himself coined the term Pinhole in The Stereoscope The earliest reference to the term Pinhole has been traced back to almost a century before Brewster to James Fergusons Lectures on select Subjects. Sir William Crookes and William de Wiveleslie Abney were other early photographers to try the pinhole technique. Within limits, a smaller pinhole (with a thinner surface that the hole goes through) will result in sharper image resolution because the projected circle of confusion at the image plane is practically the same size as the pinhole. An extremely small hole, however, can produce significant diffraction effects and a less clear image due to the wave properties of light. Additionally, vignetting occurs as the diameter of the hole approaches the thickness of the material in which it is punched, because the sides of the hole obstruct the light entering at anything other than 90 degrees. The best pinhole is perfectly round (since irregularities cause higher-order diffraction effects), and in an extremely thin piece of material. Industrially produced pinholes benefit from laseretching, but a hobbyist can still produce pinholes of sufficiently high quality for photographic work. One method is to start with a sheet of brass shim or metal reclaimed from an aluminium drinks can or tin foil/aluminum foil, use fine sand paper to reduce the thickness of the centre of the material to the minimum, before carefully creating a pinhole with a suitably sized needle. A method of calculating the optimal pinhole diameter was first att empted by Jozef Petzval. The crispest image is obtained using a pinhole size determined by the formula [pic] Where d is pinhole diameter, f is focal length (distance from pinhole to image plane) and ÃŽ » is the wavelength of light. For standard black-and-white film, a wavelength of light corresponding to yellow-green (550nm) should yield optimum results. For a pinhole-to-film distance of 1 inch (25 mm), this works out to a pinhole 0.17 mm in diameter. For 5 cm, the appropriate diameter is 0.23 mm. The depth of field is basically infinite, but this does not mean that no optical blurring occurs. The infinite depth of field means that image blur depends not on object distance, but on other factors, such as the distance from the aperture to the film plane, the aperture size, and the wavelength(s) of the light source. Pinhole cameras can be handmade by the photographer for a particular purpose. In its simplest form, the photographic pinhole camera can consist of a light-tight box with a pinhole in one end, and a piece of film or photographic paper wedged or taped into the other end. A flap of cardboard with a tape hinge can be used as a shutter. The pinhole may be punched or drilled using a sewing needle or small diameter bit through a piece of tinfoil or thin aluminum or brass sheet. This piece is then taped to the inside of the light tight box behind a hole cut through the box. A cylindrical oatmeal container may be made into a pinhole camera. Pinhole cameras can be constructed with a sliding film holder or back so the distance between the film and the pinhole can be adjusted. This allows the angle of view of the camera to be changed and also the effective f-stop ratio of the camera. Moving the film closer to the pinhole will result in a wide angle field of view and a shorter exposure time. Moving the film farther away from the pinhole will result in a telephoto or narrow angle view and a longer exposure time. Pinhole cameras can also be constructed by replacing the lens assembly in a conventional camera with a pinhole. In particular, compact 35 mm cameras whose lens and focusing assembly have been damaged can be reused as pinhole cameras—maintaining the use of the shutter and film winding mechanisms. As a result of the enormous increase in number while maintaining the same exposure time, one must use a fast film in direct sunshine. Pinholes (homemade or commercial) can be used in place of the lens on an SLR. Use with a digital SLR allows metering and composition by trial and error, and is effectively free, so is a popular way to try pinhole photography. Unusual materials have been used to construct pinhole cameras, e.g., a Chinese roast duck. By Martin Cheung Calculating the f-number required exposure The f-number of the camera may be calculated by dividing the distance from the pinhole to the imaging plane (the focal length) by the diameter of the pinhole. For example, a camera with a 0.5 mm diameter pinhole, and a 50 mm focal length would have an f-number of 50/0.5, or 100 (f/100 in conventional notation). Due to the large f-number of a pinhole camera, exposures will often encounter reciprocity failure. Once exposure time has exceeded about 1 second for film or 30 seconds for paper, one must compensate for the breakdown in linear response of the film/paper to intensity of illumination by using longer exposures. Other special features can be built into pinhole cameras such as the ability to take double images, by using multiple pinholes, or the ability to take pictures in cylindrical or spherical perspective by curving the film plane. These characteristics could be used for creative purposes. Once considered as an obsolete technique from the early days of photography, pinhole photography is from time to time a trend in artistic photography. Related cameras, image forming devices, or developments from it include Frankes wide field pinhole camera, the pin speck camera, and the pinhead mirror. NASA (via the NASA Institute for Advanced Concepts) has funded initial research into theNew Worlds Mission project, which proposes to use a pinhole camera with a diameter of 10 m and focus length of 200,000 km to image earth sized planets in other star systems. A non-focusing coded-aperture optical system may be thought of as multiple pinhole cameras in conjunction. By adding pinholes, light throughput and thus sensitivity are increased. However, multiple images are formed, usually requiring computer deconvolution.

Rastafarianism Religious Beliefs: Spiritual Practices

Rastafarianism Religious Beliefs: Spiritual Practices Over the years, there have been various explanations to the causes of mental illness; while some have indicated genetic causes, others have identified socio-economic causes and others have explained it using a stress-vulnerability model. Sometimes it has been explained as a combination of these factors but irrespective of these explanations which could be argued, it has been substantiated by various studies. One cannot dismiss the strong association of cultural and religious beliefs and practices in the explanation of mental illness and how these explanation and beliefs can influence treatment options sought by the individual and clinicians attitudes and responses. In some instances, people experiencing mental illness may have delusions of religious content as this can obscure valuable diagnosis and required treatment to be given (Cinnirella and Loewenthal, 1999). Although, religion in certain instances does not have association with mental health disorders, when it does, some close associates of the person experiencing mental health difficulties see them as someone who requires treatment, while others think they have a good doctrine or fundamental ideas and will seldom seek medical or psychological intervention (Johnson-Hill, 1995). Rastafarianism is a way of life predominately allied with people of the Afro-Caribbean background. The movement turned religion, began in Jamaica in the 1930s, came into view as a proxy to the governance of western colonial authority and values. Teachings of Marcus Garvey, who advocated and championed the interests of people of African descent in the Diaspora, inspired the movement (Chevannes, 1998). There are over a million worldwide followers of Rastafarian religion. It has been estimated that about 5,000 Rastafarians are living in England and Wales in the 2001 census and there are considerable followers of the faith in communities predominately in London, Leeds, Manchester, Birmingham, Liverpool, Bristol and Nottingham (BBC, 2009). The primary aim of the religion is to bring about the elementary transformation of an unjust society. Ethiopianism is an idea that merges Ethiopia and the whole of the African continent which occupies followers of the Rastafarian faith with dreams of a return to their heaven on earth (Chevannes, 1994). Johnson-Hill (1995) stated that everything about this religion, the use of the holy herb (cannabis), the use of the term I, meaning We, and songs are all intended for the Oneness (divine self) within inner self discovery which acts to strengthen the individual. All these aid the Rastafarian to engage in purity of the mind and be regarded as person of self worth (Murrell, Spencer and McFarlene, 1998). The rise of Bob Marley, who was a practicing Rastafarian made the movement/ religion very popular not only in the Caribbean but the whole world and has attracted a considerable number of followers mainly blacks, and some white people who claim to have affiliation with Africa, to the ethics and practices of the Rasta faith. The inclusion of white people to the religion has led to a change in their philosophy of skin colour to an orientation of the mind and self- determinism (Johnson-Hill, 1995). Their strict teachings and practices, like any other religion may have protective factors against mental illness however it does not exempt an individual from experiencing mental health difficulties. This article will attempt to highlight the origin of Rastafarianism, spiritual practices and its impact on mental health and mental health practice. Origin of the Rastafari Religion Marcus Garvey was one of the founders of the religion. His middle name Mosiah which was interpreted by people as a link between Biblical Moses and the Messiah was very significant to his followers and turned the United Negro Improvement Association to a worldwide movement. Garvey used Biblical suggestion of Ethiopia as a place of return to Africa and also predicted to his followers to Look to Africa for the crowning of a Black King; he shall be the Redeemer (Murrell, Spencer and McFarlene, 1998). As Barrett (1988) pointed out, this prophecy to all of Garveys followers existed in their minds until in 1930, when Ras Tafari the great grandson of King Saheka Selassie was crowned Emperor of Ethiopia. He took up the name Haile Selassie (Might of the Trinity) and other titles as King of Kings, Lord of Lords, Conquering Lion of the Tribe of Judah, Elect of God and Light of the World and placed himself in the dynasty of King Solomon (Murrell, Spencer and McFarlene, 1998). Many Jamaicans and followers of the United Negro Improvement Association saw the coronation as a revelation from God and the fulfilment of the prophecy predicted earlier by Marcus Garvey. The fundamental idea of Ethiopianism and Messianism were put together by the Garvey movement whose task was to rebuild Africa shattered by the invasion of the colonialists (Chevannes, 1998). Rastafarians soon accredited themselves as part of the twelve tribes of the biblical Israel and identified with Haile Selassie as the redeemer or messiah who would lead them away from the white oppression (Babylon) with a promise of a return to Africa (Barrett, 1988). Johnson-Hill (1995) pointed out that although some followers of the faith returned to Ethiopia, others now see this mission as a psychological self discovery and personal attribute to Africa; its culture and way of life. Rastafarian beliefs, rituals and practices The Bible is of great importance to the practice of Rastafarianism but only some of its content is peculiar to the religion. However the Rasta believes in the Bible as having higher power to expose evil. They have nurtured for themselves a wide range of beliefs and spiritual practices with support from their interpretation of various texts in the Bible (Murrell, Spencer and McFarlene, 1998). The Rastafarians are persuaded that God is black and support their doctrine with Biblical text in Jeremiah 8:21. A reverence of Haile Selassie is very vital to the Rasta as he is perceived as a living god and returned messiah linking him to the lineage of King Solomon. The distinct characteristics of Haile Selassie is divine to the followers of Rastafarianism but to some he is an incarnation of God who is called Jah or combined as Jah-Rastafari which they support with Biblical verses in Revelations 5:2-5, Psalms 68:4 and Psalm 87:3-4. (Barrett, 1988). Chevannes (1994) points out that twice every week, the Bobo Shantis who are the strict followers of the religion use prayer and fasting and drumming as an essential part of the Rastafarian faith. On these occasions, nothing whatsoever passes their lips from noon to sunset amid worship in their temple. Prayer is predominately done three times every day, where the believer prostrates facing east at sunrise, noon and sunset. These religious beliefs and practices clearly have implications for mental health practice. The general believe in the Rastafarian religion is peace and their denouncement of violence. Sometimes this non-violent way of life is highly unachievable due to their socioeconomic strata and the militant affiliation of one section of the religion, the Nyahbingi order that might support violence. The Rastafarians lifestyle and day to day activities began as a deviation from societys norms and the formation of a cohesive unit. Protest against authority brought about violence in the early days of the founding of the religion (Johnson-Hill, 1995). The Bobo Shantis (a sect of Rastafarianism), are self mindful non violent people who wear their dreadlock hair under turbans. They desist from amassing wealth and property with a notion of living a very simple life similar to the lifestyle and practices of the ancient Israelites while observing the Sabbath weekly from Friday evening through Saturday evening (Murrell, Spencer and McFarlene, 1998). Another division of the Rastafarian religion is the twelve tribes of Israel which have larger and diverse followers. Each tribe is associated with a month of the year according to the names of the twelve tribes of Israel and members are deemed equal in status although they may function differently (Barrett, 1988). In the Rastafarian religion, women are seen as less superior beings and obtain the faiths thorough divine wisdom through their husband, or partner (Barrett, 1988). This indicates the possibility of Rastafarian men treating women inhumanely and possibly preventing them from accessing mental health services and treatment. There are some traditional practices which bear similarities in the practices of Rastafarians where in the public place, women must wear ankle length dresses, and hair must be covered during ritual proceedings. Rasta women are exempt from cooking when menstruating and in certain situation they are placed in seclusion (Chevannes, 1998). Although these are beliefs and custom held by the Rastafarians, it is evident that it can cause oppression to the woman, and can be a contributing factor of mental illness. Another belief or practice that can have implications for the treatment of mental illness is the Rastafarians placing a valuable importance on nature. It is seen as an endowment of Jah for healing and sanctification of mankind (Murrell, Spencer and McFarlene, 1998). As a result of this view, they reject unnatural things relevant to life including medical treatment, rather preferring the natural herbal use. The use of cannabis referred to by the Rastafarians as the herb, weed or ganja is believed to have been found on the grave of King Solomon and it is to aid in gaining insight into life, have a clear conscience and meditating in worship (Barrett, 1988). CLINICAL IMPLICATIONS Cannabis and mental health A feature that people attribute to Rastafarianism is the use of cannabis. To the Rastafarian smoking cannabis is a special spiritual experience and help in their meditation as well as enlightens their mind. A procedure referred to as reasoning. The ritualistic way involving cleansing and prayer before using cannabis is sacred to them. Smoking cannabis without purpose is regarded as disrespectful to a Rasta (Barrett, 1988). To the Rastafarian, it is their right to use cannabis but its cultivation and possession according to the law is illegal and warrants a police caution or arrest (Home Office, 2009). In a medical context, the association between cannabis sativa commonly known as cannabis, marijuana, weed, or herb and psychosis has been raised. Cannabis sativa is exceptional for producing different types of cannabinoids but the most powerful type associated with psychosis is the Tetrahydrocannabinol (THC) which also contains carbon monoxide and carcinogens found in tobacco (Ashton, 1999). The THC content in cannabis has dramatically augmented over the years due to the advanced ways by which the plant is cultivated. The increased potency of cannabis nowadays may expose users to high doses of THC. In a study conducted by Reilly et al., (1998) using 268 long term users of cannabis with regular usage of at least three times per week, the subjects gave reasons for their cannabis use as mainly for relaxation, having a feel good effect and to alleviate stressors in their day to day lives. They however reported feelings of anxiety or depression, lack of motivation, exhibition of paranoid ideation and some also reported respiratory symptoms. Beer (2007) explained that certain individuals with a Valine modification in the dopamine-regulating COMT (catechol-O-methyl transferase) gene are vulnerable to developing psychosis and cannabis can exacerbate psychosis in individuals with this defect in their genome. Experiments conducted by DSouza et al (2004) described the existence of positive and negative symptoms of schizophrenia in the healthy people in their study who were given cannabis intravenously and also a transient acute psychotic episode in others. Early commencement of cannabis u se on a frequent basis was noted as a strong predictor in the individuals future addiction to cannabis and an important relation to depression (Kalant, 2004). He further showed that there is evidence that memory and information processing in the children of women who are chronic users of cannabis were permanently affected and a susceptibility to other illicit drugs dependence in later life owing to early exposure. Still exploring the impact of cannabis use on mental health, Ashton (1999) has indicated the pharmacokinetics of cannabinoids as it enters the lungs into the blood stream and the effect it precipitates. As the cannabis smoke is inhaled or taken orally, its effect is noticed within minutes and evoking a physiological and physical effects in users. In the bloodstream, the cannabinoids are circulated quickly to parts of the body requiring high blood demand like the brain, liver and lungs. In the brain, cannabinoids like THC act as agonist at the CB1 receceptors which is only found in the brain and a second one is also located in peripheral tissues especially in the immune system (Iversen, 2003). Studies have shown that these CB1 receptors are predominately confined to axons and nerve terminals but not in the dendrites or body of the neurons. These receptors have a presynatic mechanism in origin and modify the release of neurotransmitters which are mainly found in the basal ganglia, cerebellum, hypothalamus, anterior cingulated cortex, hippocampus and cerebral cortex (Levenes et al., 1998). Chronic cannabis use is linked to memory, learning impairment and cognitive function which are allied with the cortex and the hippocampus with subsequent mental health deficit (Iversen, 2003). Impaired judgement by these users relates to disruption in their decision making. This effect of cannabis on the brain explains the effect of the amount of dopamine released corresponds to the dopamine hypothesis of schizophrenia whereby excessive production of dopamine is associated with symptoms of schizophrenia (Johns, 2001). There is an extensive research highlighting the adverse effect cannabis has on ones mental state most especially in chronic or regular users. The capacity of cannabis is to generate a high, a notion widely associated with its use. Its abuse or addiction is related to substantial pre-morbid psychopathology (affective and personality disorders as well as psychotic disorders). The intense reaction it gives is ecstatic otherwise a euphoric, detached and relaxed feeling which may persevere with perpetual use of cannabis (Johns, 2001). Patriarchal structure and mental health implication While the woman signifies an enchanting pleasure to men and also satisfying their partners desires by not showing dissatisfaction or allowed to complain about anything in the Rastafarian faith, she is thought to denote a specific hazard to their men. Rastafarians believe that a woman is of such wayward nature that only through her male spouse, her king-man, may she attain the enlightenment of Jah (Chevannes, 1998). Using Biblical context of Adam and Eve and Samson and Delilahs experiences, Rastafarian men do not trust their women folk. This feature of the Rasta faith which has societys condemnation is the issue of dissimilarity in gender and a patriarchy practice. In certain Rastafarian communities, some of these sexist ideas results in women being marginalised, seen as inferior and a source of sin. There is a concept about women being submissive to their men folk and always show respect as well as do what they ask which is very contradictory or antithesis to their belief about human equality (Johnson-Hill, 1995). This oppression and control can lead to emotional and physical abuse in the women. Domestic violence arises when a partner considers dictating and gaining control of the other partner. Most often abusers are of the male gender and the need to dominate may arise from low self esteem, extreme inferiority issues in socioeconomic and educational status, excessive anger and jealousy. Inten se traditional beliefs or cultural practices may influence peoples behaviours as they grow either witnessing these practices of abuse from childhood or being victims of abuse themselves and the subsequent development to think it is right to control and abuse women (Briere, 1996). This occurrence of jealousy, insecurity and all forms of abuse with the situation of intimate relationship are common (Spiegel, 2003). Abuse is often thought as a physical abuse but emotional and verbal aspects can be as damaging as that of the physical. In many situations of abuse, these women will seldom report such incidences and only in serious proportions resulting in injuries and death reaches the attention of the authorities. Women experiencing this ordeal of pain and trauma in their relationships are referred to seek mental health and psychological interventions (Salter, 1995). In a cross-sectional survey comprising of 432 women who attended walk-in clinics, Maharaj et al (2010) used the Woman Abuse Screening Test (WAST) and showed a major association between abuse in mental health disorders in the patients especially depression, anxiety and posttraumatic stress disorder. A longitudinal study conducted by Roberts et al (1999) with women aged between 16 to 74 years, who were treated at the accident and emergency department investigated the features of symptoms and precedents of mental illness associated with domestic violence and abuse. Their findings showed similarities with other results highlighted in other research which identified that women who suffer abuse in their adult lives suffered an impact on their mental health and other women who experienced similar abuse in their childhood as well as adult life also had a significant difficulty in their mental health than women in the control group who were women not abused in any form. These studies clearly indicate an association between abuse and mental health problems. It also indicates that addressing the issues of abuse is paramount to religious beliefs and practices in mental health practice. The other implication it has on mental health practice is; professionals ability to carry out accurate ri sk assessment and subsequently manage risk in the light of these complex beliefs and practices. Rastafarianism and the vegans syndrome The Rasta believes that it is wrong to eat the carcass of animals because then the body is being converted into a burial ground (Chevannes, 1994). Most Rastafarians will not eat animal meat, some will eat fish but not eat shellfish and the consumption of milk by some is viewed as not coming from dead animals. They will not eat fruit that has been altered from its natural form nor any food that has been processed. In vegan diet, there is a low concentration of vitamin B12. Vitamin B12 (cobalamin) is a vital component of the synthesis of DNA and has been implicated in various neurological and psychiatric disorders (Lerner and Kanevsky, 2002). Vitamin B12 contributes an important part in the maintenance of homeostasis in the nervous and the transport systems (haematology). The daily dietary recommendation is 2.5 Â µg and only produced naturally by some microorganisms unlike humans who have to obtain it from their diet especially in dairy products, eggs, fish and meat (Catalano et al., 1998). A decline in the level of vitamin B12 causes anaemia, a rise in mean corpuscular volume (MCV), haematocrit and haemoglobin and some patients are found to have normal blood levels but deficient in this vitamin which can prove difficult to diagnose. Its role in the disorders of a neuropsychiatric is understudied, however several research cited by Catalano et al (1998) in their article has postulated toxic levels in homocysteine, axonal demylenition of neurons are a cause of deficiency in vitamin B12 and an association with mental health difficulties. It has proven a challenge to diagnose, as the psychiatric symptoms sometimes can present with or without hematologic or neurological appearance (Sabeen and Holroyd, 2009). There is a correlation between vitamin B12 deficiency and different types of psychiatric and neurological deficits. Vitamin B12 (cobalamin) plays an important role as a coenzyme in human metabolism which contributes to the synthesis of neurotransmitters such as d opamine, serotonin and noradrenalin. Defects in these neurotransmitters can lead to a decline in mental state and subsequently evolve into a psychiatric disorder (Hutto, 1997). Symptoms of a psychiatric nature that is accredited to a deficiency to vitamin B12 are a decline in cognitive function, confusion, delirium, depression, acute psychosis (agitation, paranoia, hallucination) and a rare schizophrenia presentation. In the older adult patients, there are reported cases of dementia and catatonic presentation and other patients presented with neurological deficit like paresthesias, ataxia and other sensory impairments (N. Berry, Sagar and Tripathi, 2003). Recommendations It is very evident that the religious beliefs and practices of Rastafarians have implications for mental health and mental health practice. It will be recommended that; Practice Rastafarians have nurtured a phonological scheme of words into a new framework of the English language which is heavily accented. This exclusive way of communicating might obstruct the clinicians task in mental health assessment of a Rastafarian. Health professionals ought to be aware of the variations in making accurate assessments. This will include sometimes consulting people with in-depth knowledge. Secondly, a thorough spiritual assessment needs to be considered especially if the patient is a practising Rastafarian as spiritual practices like chanting, fasting and their dietary needs to be adhered to and some of the beliefs and practices can be construed as symptoms. Raising awareness of vitamin B12 deficiency and its relation to psychiatric symptoms among healthcare professionals is essential to provide understanding to the vegan syndrome in these people who presents as anaemic or neuro-psychiatric disorder or both. Training regarding this causality of deficiency in vitamin B12 and psychosis should be ruled out when these group of people present with symptoms of a psychiatric nature. During any psychological or psychiatric assessment of the Rastafarian women, clinicians should be aware of the possibility of abuse and in- depth exploration into the likelihood of abuse in order to safeguard the individual. Psychological intervention could also play an important part in ensuring their well being if identified of suffering abuse. Cannabis use and its association with psychotic illness should not be undermined. Patients and their carers need to be educated about the risks of cannabis use. Staff should set up groups to educate and help patients to be abstinent. Training and Education In pre qualification training, health professionals need to be educated on the existence of such beliefs and practices and its impact on mental health assessment and management despite this group being little. Subsequently, post qualification training in religious, cultural and spiritual needs has to begin exploring the needs of this minority group. Furthermore, training in techniques such as motivational interviewing will be invaluable. Education of the general public as a whole is also important, and followers of the Rastafarian faith should be encouraged to include products like milk or take vitamin B12 supplements in their diets. Research Further research into the Rastafarian beliefs and practices and its implications for mental health need to be carried out as this is limited and almost non-existent Conclusion It has been established that the beliefs and practices of Rastafarians has implications for mental health and mental health practice. The differences between Rastafarianism and other typical religion are myriad, including: no set membership, no ordained or commanding leader, and as a whole there is association with the outside world. In certain societies, Rastafarians have been described as a religious group exhibiting delusions. The negative analysis needs to be questioned because it suggests a misinterpretation of the ideals of the religion and encourages the incorrect concept that their beliefs are atypical to notions of other religious movements. Despite these diverse ideas, it should be highlighted that Rastafarians, like other religions; Christians, Muslims, Buddhist etc are susceptible of having mental health difficulties. Diagnosis and management should be based on clinical examination and a holistic understanding of the person, in order to provide an appropriate medical, religious and cultural sensitive care.

Transportation And Logistic Chain Management Essay

Transportation And Logistic Chain Management Essay Abstract Purpose: to introduce the issue of the transportation and logistics chains. Finding: outlines how the individual papers affect debate on the nature and development of transportation in the supply chain. Originality: provides a summary of the perspectives studied within the transportation in the supply chain. Introduction My research is on the transportation and logistics chains. Products are transported between different places in different stages within a supply chain. The transportation has a large impact on both responsiveness and efficiency. Faster transportation allows a supply chain to be more responsive but reduces its efficiency within a supply chain (Chopra Meindle, 2007, p.53). Transportation has a significant impact, because it controls the speed of response and reply as stated in Newtons third law of every action there is always opposed an equal reaction. An example of Amazon is a company that sells products on the internet and uses UPS or FedEx, which is a transportation company that delivers products to customers. This is an example of transportation within a supply chain. In logistic today wrote article for Rosenau transportation gains real time visibility to customers. This article about Rosenau found solution to assistance improve dispatch, routing and customer service to provide re al time visibility to its customers, and reducing operating costs by making more stops in fewer miles. They also focused on improving the information it provides to its customers on delivery, pickup status, at same time correcting the efficiency and productivity of dispatchers and costumer service reps. Shortly it will be executing an advanced route optimization solution to reduce the miles driven, and fuel used and thus reduce the carriers environmental impact. (Rosenau Transport Gains Real-Time, 2009) According to, Sreenivas and Srinivas, due to the trend of nationalization and globalization in recent decades, logistics has advanced greatly since the 1950s and is still growing in various areas. Logistics has improved industries by optimizing production and distribution processes based on new management techniques that enhance efficiency and capacity competitiveness of enterprises (Sreenivas Srinivas). All companies seeking to expand their businesses to contribute in advancing the growth of sales as well as improve the methods to include all customers in various geographical regions, both by the high population growth or moderate. However, globalization has changed everything so that the companies paid to spend more money on transportation to reduce the time to ensure the delivery of products to the consumer of course, besides compliance with new government regulations. A factor that has made these companies to improve performance is the technology information, transportation, and logistics solutions. They have contributed to the mobilization of the stock of companies to enable them to obtain goods shortly as well as the right of access to customers; also, the right place at the right time along with it is likely that you will get a sale and delivery while reducing costs and enhance its services to avoid delays and fines. All companies operating in this area and for global programs with logistics, which includes transport and logistics functions only on the implementation of orders from inception to delivery of this position to gain visibility at home and abroad for the supply chain as well as lower costs and improve customer service. That all these components to ensure the quality of the application must examine the following possibilities: Transportation planning, transportation procurement, route planning, transportation management, small parcel shipping, and international trade logistics (infor). The important point in a logistic chain is the transportation that connects the separated activities. Transportation is jointing between stages in the supply chain. In other words, it is the way to move product from manufacturing to the final consumers and vice versa. This research focused on: Development of logistic The role of transportation in supply chain Modes of transportation Transportation infrastructure and policies Discussions and conclusions Development of logistic Definition Part of the supply chain process that plans, implements, and controls the efficient, effective forward and reverse flow and storage of goods, services, and related information between the point of origin and the point of consumption in order to meet customers requirements. (Sreenivas Srinivas). In other words, the process connects all of the means of providing raw materials to, from the company, and to suppliers of transmission products. It depends more on the provision of logistics from raw materials to the network such as the transfer process, material handling from the beginning to the end of production and the sale, disposal of waste, and add customer to increase the competitiveness of the market. In general, the optimum utilization of investigative meet the demands of customers of any goods or services must provide the information to provide that service in addition to benefiting from the network to meet customer requirements in a timely manner. Either, Council of Logistics Management (1991) defined that logistics is part of the supply chain process that plans, implements, and controls the efficient, effective forward and reverse flow and storage of goods, services, and related information between the point of origin and the point of consumption in order to meet customers requirements. Johnson and Wood is definition (cited in Tilanus, 1997) uses five important key terms, which are logistics, inbound logistics, materials management, physical distribution, and supply-chain management, to interpret. Logistics describes the entire process of materials and products moving into, through, and out of firm. Inbound logistics covers the movement of material received from suppliers. Materials management describes the movement of materials and components within a firm. Physical distribution refers to the movement of goods outward from the end of the assembly line to the customer. Finally, supply-chain management is somewhat larger than logistics, and it links logistics more directly with the users total communications network and with the firms engineering staff (YUE, TSENG, TAYLOR, 2005) The role of transportation in supply chain I mentioned in the beginning of my papers the transportation is referring to the movement of any product from one location to another. Transport refers to the movement of products from one place to another and that the beginning of the supply chain in dealing with customers. Where is the new vision and wide in the work of transport, including supply chain management and logistics, and procurement. The cost of shipping and transport, for example, arrived in shipping and transport costs in the United States almost 6% of gross domestic product. Many manufacturers and retailers were able to use the state in managing the supply chain to reduce inventory and storage costs, with the possibility of delivery to the client quickly. Any successful supply chain linked to the use of a large and adequate transportation. For example, Wal-Mart has been used effectively respond to the transportation system to reduce overall costs. In developing countries, Wal-Mart is running across the docking, a process in the product that is exchanged between the trucks so that each truck to go to a retail store and product suppliers a different form. At the same time, the exponential growth in shipment from China to create opportunities for bottlenecks on both. That is where many leading companies that having invested in the purchase of large offices in China, India, and elsewhere. From this point shows that are two keys players in any means of transport that takes place within the supply chain. Shipper is the party, which requires the movement of product between two points in the supply chain. Carrier is the party who moves or transports the product. For example, when Dell uses UPS to ship the computers from the factory to the customer, Dell is the shipper and UPS is the carrier. Transportation in supply chain cost Chopra and Meindle stated for two kinds of transportation cost: Inbound transportation costs are the costs that included the bringing material into a facility. Outbound transportation costs are the costs that sending material out of a facility. The relationship between both is the outbound transportation cost per unit is higher than inbound costs because the inbound is typically larger. (Chopra Meindle, 2007,p78). They also mintioned increasing the number of facilities can decrease total transportation cost, which refer to the figure Modes of transportation The supply chains follow combination modes of transportation following: Air fright logistic (air) Airfreight logistics is very important in industries and services to complete the supply chain and functions. Where they provide with the speed of delivery, as well as a reduced risk of damage, security, flexibility and ease of access to good views of the ordinary, but the disadvantage is the high courier fees. Reynolds, Feighan (2001) and said air cargo logistics is selected when the value per unit weight and relatively high speed of delivery is an important factor. The properties of airfreight logistics in the following: (1) aircraft, airports and separated. Therefore, the industries only need to prepare aircraft for its operation. (2) it allows for faster delivery in long-haul destinations. (3) air freight transport is not affected by the terrain. The data indicate that the transport of goods in the market continues to grow. There is a view of the directions of global markets and logistics and air cargo also to change their services. Future directions for the development of airfreight, and integration with other transport modes, and the internationalization of the coalition, and the integration of the airlines and the pattern of the future of logistics, and air freight to cooperate with other modes of transport. Such as sea and land transport, to provide service on the base just in time, and transport from door to door. (YUE, TSENG, TAYLOR, 2005) Land logistic (truck, rail, water, and pipeline) Land logistics is considered very important in the logistics activities. They are providing services for air transport and maritime transport from airports and ports. Additional logistical capacity, the positive ground is the high-level access in the wild. The major means of transport logistics land transport by rail, road transport and pipeline transport. For rail transport to and comparative jeopardy of high endurance capacity, the less the impact of climatic conditions, and low power consumption, but that the disadvantages of high cost of basic facilities and the difficulty in the cost of maintenance, with the lack of flexibility of the pressing demands, and time-consuming in the organization of railroad cars. As for the transfer of land, he has the advantages of investment funds cheaper, and ease of access is high, and the mobility and availability. On the other hand, Disadvantages, low capacity, low and safety, and slow. The advantages of pipeline transportation of high capacity, less the impact of climatic conditions, and cheaper the process of drawing, and the continuation of the means of transport; disadvantages of costly infrastructure and the difficulty of control, goods, specialization, and needs regular maintenance. The excessive use of road transport also brings many problems, such as traffic congestion, pollution and traffic accidents. In the future, to improve road transport in the transport efficiency and reliability, a revolution in the field of transport policy and management is required, for example, pricing. (YUE, TSENG, TAYLOR, 2005) Package carriers Package carriers are transportation copmanies such as FedEx, The United States Postal Service (USPS), and the Uninterruptible Power Supply (UPS), The package can be small because the backage cariers use air and should weight about 150 pounds, also package carriers are expensive and cannot compete with less than truckload carriers on price for large shipments. Thus, shippers use package carriers for small and time sensitive shipments. Package carriers also pickup the package from the source and deliver it to the destination site. With an increase in just in time (JIT) deliveries and focus on inventory reduction, demand for package carriers has grown. (Chopra Meindle, 2007. P389) For example, the goal of DHL is nothing less than to transform the logistics industry and to deliver beyond our customers expectations wherever and whenever they need us by offering the most comprehensive suite of services and becoming the only genuine one-stop source for logistics solutions, globally. The supply chain in package carrier for DHL express is the flow of goods, within information and finance. It starts by sourcing raw materials which content semi-finished goods, that are scheduled and transported into factories to be made into finished products (see Diagram up). Then pass through warehouses or distribution centres and are delivered to retailers, wholesalers or direct to consumers homes or business premises. Finally, aftermarket activities involve the maintenance and repair, or the return and recycling, of products at the end of their life. Supply chain planning optimises overall flows and inventories, by balancing resources with demand at all stages. (DHL) Transportation infrastructure and policies The transportation is infrastructure that means roads, seaports, airports, rail, and canal. All these exist along nodes and links of transportation network. All countries are taken responsibility a significant role in building and managing these infrastructure elements. The transportation and infrastructure focuses on operational and policy issues within transportation and infrastructure areas that affect logistics operations. Discussions How can quickly deliver products to consumers with a common consensus on the control operators? That the integration of logistics services and e-business is the current trend is currently in some companies. In order to obtain position that is more beneficial and building a complementary relationship, which is its reliance on networks and industries, such as Yahoo and E-Bay, and often cooperate with the logistics industry. Integration can reduce the middle-level procedures. For example, producers can immediately provide products to more customers of the station. To reduce costs by more efficiently. Besides, companies do not have to take inventory and warehouse costs only, and therefore it becomes a modern industry of the lower cost and more efficient division of specialization. For example, customers can obtain an order of goods shops. Through E-logistics, and the state of competition in industries could be promoted in the knowledge economy. Moreover, to promote business activities should include transport systems in various stages. The integration between different applications is to provide comfort through the promotion of the system of information flow and business processes. For consumers and businesses can make more efficient and easier than through the assistance of e-commerce and the Internet. With physical delivery, still rely on the transportation system to end processes. The cost of transport may be one-third of the cost of logistics. At the same time, transport systems and techniques required in almost every activity of logistics services. And therefore the reform of patterns of business for consideration in transport systems. Conclusion I have tried to cover papers on the part of the scope of logistics activities of transportation systems and attempts to determine the role of transport in transport systems and logistics. Knowing that is the most of the major contents of the research include a review of the development of logistics services, operations and personalities from different transport activities, logistics, and logistics applications in various fields, and logistics city, and the future direction in the development of logistics services, and cooperation with the transport regulations. To summarize, logistics, transport, and some importance in the supply chain must be. First, the transport system and supply have a more and more important in our society. Next, transport and transport systems, logistics and interrelationships that the needs of logistics management and transportation of the implementation of its activities at the same time, it can be to the success of the transport system and supply help to improve traffic and transport, environment and development. Third, as it contributes the highest transport costs among the relevant elements of logistics systems, and improve the efficiency of transport can alter the overall performance of the transportation system and supply. Final, play and transport an important role in the logistics system and activities appear in the various sections of logistics services. Without linking transportation and logistics, services cannot be a powerful strategy to bring its full play. Review of the Transport and Logistics in a broad sense may help to integrate the benefits of different applications of cases to overcome the disadvantages of the present. On the other hand, Review of the transport systems and provides a clear idea on the applications in transportation logistics. The development of logistics services will still be active in the following decades and logistics that can be applied in other areas.

Emily Brontes Wuthering Heights :: Wuthering Heights Essays

Wuthering Heights is a passionate book about love written by Emily Bronte. This book, Wuthering Heights, proves that love is a mysterious force with intense power. This book shows the love between Catherine and Heathcliff, and how money can easily come between someone you love. Catherine's love for Heathcliff, deeply hurts Edgar. Edgar truly loves Catherine, but she would never know that. First, Catherine loves Heathcliff. She loves him sincerely, but, because of her brother, Catherine can never marry Heathcliff. Edgar's timing could not have been worse. Catherine's problem is that she loves Heathcliff, but to take care of him, she must marry Edgar. So she does. When Catherine marries Edgar, Heathcliff runs away. He just could not face the fact that Catherine was with someone else. So, because Catherine loves Heathcliff, she marries Edgar to protect Heathcliff. This pain forces Heathcliff to flee. Then, Heathcliff is also in love with Catherine. He thinks that Catherine just does not love him because she marries Edgar. He does not see that she does what she must for the good of everywhere. Catherine marries Edgar to get Heathcliff out of Catherine's brother's care. Heathcliff has no money. He realizes that too. Heathcliff knows he will never go anywhere or be anyone without money. So, in a way Catherine buys Heathcliff's freedom by marrying Edgar. And Heathcliff took his rage and left Wuthering Heights. Heathcliff and Catherine have a love for each other that no one can ever understand or describe. This love also drives them apart. They love each other so much that it splits them apart. They can never be together. Finally, Edgar has a love for Catherine that she would never understand. Even when Catherine and Edgar were together, when they took their vows to love and cherish one another till death do they part, Catherine still loves Heathcliff. Through the three years that Heathcliff has run away, Catherine drifts away from Heathcliff and more to Edgar. In September of 1783, when Heathcliff returns. Catherine instantly falls in love with him again. Edgar tries to please and honor Catherine, in the end it does not help, because her love for Heathcliff will always be there. In conclusion, Heathcliff and Catherine will always love each other. And because they both love each other so much, it takes

Use of Symbols and Symbolism in Steinbecks Flight :: Steinbeck Flight Essays

Use of Symbolism in Steinbeck's Flight In his classic short story, "Flight," John Steinbeck uses many examples of symbolism to foreshadow the conclusion. Symbolism can be anything, a person, place or thing, used to portray something beyond itself. It is used to represent or foreshadow the ending of the story. Steinbeck uses colors, direction, and nature symbolism to help presage Pepà ©'s tragic death. Let us now more closely examine the ways that Steinbeck uses colors to foreshadow the ending of his short story. Perhaps the most repeatedly used symbol in "Flight," is the color black. In literature many authors use black to represent death. There are numerous examples in this short story. Some of these include the black handle on the long blade, Pepà ©'s black hair and the black jerky. Another example may be found when Pepà © puts on his fathers black coat, which represents death. When Pepà © puts on the coat he is literally covering himself with death. Another fine example is the trail in which Pepà © travels. Steinbeck describes the path as a well-worn black path. By traveling on this path he is in fact taking the road of death. Furthermore Pepà ©'s appearance also helps foreshadow the ending. Steinbeck describes him as having a black hat that covers his black thatched hair. Pepà © is also described as being dark, lean and tall. Another example is Pepà ©'s shack. The shack is described as weathered and very old. It casts a rather large shadow to the North east. The darkness of the shadow symbolizes death in the home. As we can readily see, the authors use of black symbolism in the story tells us that the main character, Pepà ©, is impending death. Another commonly used symbol in the story "Flight," is direction. Direction is used to represent positive or negative effects. North and East are generally "good" directions. Many people feel this came about when the early man saw the sun rise in the East. On the contrary, the directions South and West are generally "bad" directions. Basically this is because the sun sets in the West. Besides compass directions, height is also a very popular way of foreshadowing the conclusion of the story. The direction up, which is also the way to heaven is generally "good," while down, the direction of hell, is considered to be "bad." An example of this form of symbolism can be found when Pepà © is returning home.

Stuart Hall’s Cultural Identity and Diaspora

Ouahani Nasr-edine A Paper about Stuart Hall’s article: Cultural Identity and Diaspora Stuart hall talks about the crucial role of the â€Å"Third Cinemas† in promoting the Afro-Caribbean cultural identities, the Diaspora hybridity and difference. Hall argues that the role of the â€Å"Third Cinemas† is not simply to reflect what is already there; rather, their crucial role is to produce representations which constantly constitute the third world’s peoples as new subjects against their representations in the Western dominant regimes. Their vocation is to allow us to see and recognize the different parts and histories of ourselves. They should provide us with new positions from which to speak about ourselves. Stuart Hall provides an analysis of cultural identities and what they stand for, their workings and underlying complexities and practices. Hall argues that cultural identities are never fixed or complete in any sense. They are not accomplished, already-there entities which are represented or projected through the new cultural practices. Rather, they are productions which cannot exist outside the work of representation. They are problematic, highly contested sites and processes. Identities are social and cultural formations and constructions essentially subject to the differences of time and place. Then, when we speak of anything, as subjects, we are essentially positioned in time and space and more importantly in a certain culture. These subject positions are what Hall calls â€Å"the positions of enunciation† (222). Hall talks about cultural identity from two different, but related, perspectives. First, he discusses cultural identity as a unifying element or as the shared cultural practices that hold a certain group of people together and second, he argues that as well as there are similarities, there are also differences within cultural identities. In the following paragraphs, we will discuss these two sides of cultural identities. In the first sense, cultural identity is held to be the historical cultural practices that held to be common among a group of people; it is what differentiates them from other groups and held them as of one origin, one common destiny. In this sense, cultural identity refers to those cultural codes which are held to be unchangeable, fixed true practices. This underlying â€Å"oneness† or â€Å"one true self† is the essence, Hall argues, of â€Å"Carribeaness†, of the black Diaspora. It is this identity which should be discovered by the black Diaspora and subsequently, should be excavated and projected through the representations of the â€Å"Third Cinemas†. Here we would add that this collective identity is not only to be represented by the â€Å"Third Cinemas† but also by The Third Literature and through The Third Academia. It is this sense of cultural identity which plays a critical role in eliciting a lot of postcolonial struggles. The act of discovering such identity is at the same time an act of re-shaping and rehabilitating, of re-claiming â€Å"the true self†. It is an act which goes beyond â€Å"the misery of today† to recover and reconstruct what colonization have distorted. Imaginative rediscovery plays a crucial role in restoring such identity. The emergence of counter discourses (like feminist discourse, anti-racist discourse, anti-colonial discourse and so on) which tries to highlight and bring to the forth the â€Å"hidden histories† are an outcome of the creative force of such sense of cultural identity. Hall gives the example of Armet Francis photographs about the peoples from the â€Å"Black Triangle† which is considered as a visual attempt, an act of imaginary reunification of blacks which have been dispersed and fragmented across the African Diaspora. Another universal unifying element of blacks is the Jazz music. It is an attempt to restore the black agent to his home â€Å"Africa†, to relocate him, symbolically, within his true essence: â€Å"Africanness†. Such counter discourses are resources of resistance which problematizes the Western regimes of scholarly and cinematic representations of blacks. The second side of cultural identity is related to the discontinuities and differences, to the historical ruptures within cultural identities. Cultural identity is not just a matter of the past, a past which have to be restored, but it is also a matter of the future. It is a â€Å"matter of ‘becoming’ as well as of ‘being’† (225). In this sense cultural identities no longer signify an accomplished set of practices which is already there; they are subject to the â€Å"play† of history, power and culture. They are in constant transformation. Hall argues that it is this second sense of cultural identities which enable as to come to terms with â€Å"the traumatic character of the ‘colonial experience’. The Western representations of the black experiences and peoples are representations of the ‘play’ of power and knowledge. Western categories of knowledge not only position us as ‘Other’ to the West but also makes as â€Å"experience ourselves as Others† (225). This colonial experience puts as in a dangerous position: it makes us ambivalent in our life, our needs, and our thought. This colonial experience had produced uprooted subjects, split between two words in an unidentified space. This rootlessness, this lack of cultural identity which the colonial experience produces leads us to question the nature of cultural identity itself. In this sense it is never a fixed, shared entity. It is not one and for all† (226). It is not something which happens in the past but it is a process. What we told ourselves about our past is always constructed through â€Å"memory, fantasy, narrative and myth†. Cultural identities are not essences but are ‘positionings’; they are constructed sites from which we speak about ourselves. Hall states that black Caribbean identities are shaped through two operative vectors: the vector of the continuity which is related to the past heritage and the vector the discontinuity which is the result of slavery, transportation and migration. In this sense, it is the Western world that unifies the blacks as much as it cuts them, at the same time, from direct access to their past. This colonial effect on the Caribbean positions the different regions of the Caribbean archipelago as both the same and different simultaneously. In relation to the West, we are positioned in the periphery, one space, one fate and one destiny; but in relation to each other, we have different cultural identities. These variations within cultural identities cannot be simply cinematically presented in simple binary oppositions as â€Å"past/present† or â€Å"them/us†. Drawing on the concept of â€Å"differance† which the French philosopher Jacque Derrida had developed, Hall explains that cultural identities which, generally, we think of as eternal and unified are instead, merely a temporary stabilization and arbitrary closure of meaning historically and culturally specific. Cultural identities are subject to the infinite nature of the semiosis of meanings and the endless supplementarity within those meanings. The complexities of the Caribbean cultural identities can be partly understood if we relate it to the three ‘presences’ over the islands: â€Å"the presence Africaine†, â€Å"the presence Europeenne† and the â€Å"presence Americain†, the terra incognita. The presence Africaine is the space of the repressed. It is inscribed in every aspect of the Caribbean everyday life and it is the secret, hidden code by which Western texts are re-read. This is the live Africa from which â€Å"the Third Cinemas† and other representations should derive their materials. The discontinuity and ruptures which are caused by slavery and transformation makes us aware of our â€Å"blackness†. It causes as to return back to our past to discover our real essence which unites us despite our differences. This process returning back enables the emergence of a ‘new Africa’ grounded on and necessarily connected to the symbolic ‘old Africa’. Our journey to the old Africa is an imaginative journey, a symbolic journey to the far past to make something of the present day Africa. The presence Europeenne, on the other hand, has positioned us in the rims of the centre and inscribes in us a sense of ambivalence manifested in our attitudes of and identification with the West, going backward and forward from moments of refusal to moments of recognition. Finally, the Americain or the â€Å"New World presence† constitutes the battleground where different cultures from different parts of the world grapples and collide with each other, what Mary Louse Pratt calls a â€Å"contact zone†. It is the ‘empty’ space, the third space or the space of no one. It is the place where the processes of creolizations, transformations, assimilations, syncretisms and displacements occur: It stands for the endless ways in which Caribbean people have been destined to ‘migrate'; it is the signifier of migration itself- of travelling, voyaging and return as fate, as destiny; of the Antillean as the prototype of the modern or postmodern New World nomad, continually moving between centre and periphery. 234) In this sense, the â€Å"New World presence†, the terra incognita, constitutes the very beginning of the Diaspora of the black presence, of diversity, hybridity, and difference. It is an open symbolic space which is constantly producing and re-producing, a space of heterogeneity of constant newness and uniqueness. The rich past of sameness and difference, of shared spiritual and cultural habits on the one hand and of memories of ruptures and discontinuities_ slavery, migration, transformation†¦_ on the other hand constitute â€Å"the reservoir of our cinematic [and other] narratives†. It is the real black Diaspora. Reference:Rutherford, Jonathan. Identity, Community, Culture and Difference. Ed. London: Lawrence & Wishart Limited, 1990.[ 1 ].All the quotations stated in this work are taken from Stuart Hall’s article ‘Cultural Identity and Diaspora’ in Jonathan, Rutherford. Identity, Community, Culture and Difference. Ed. London: Lawrence & Wishart Limited, 1990. PP 222–237