Friday, May 1, 2020
Leading and Managing People Dynamic Organization
Question: Describe about the Leading and Managing People for Dynamic Organization. Answer: There are several factors which impact the ability to staff an organization appropriately. The staffing process may get affected by internal as well as external factors. Internal factors include promotion policy, future growth plans, use of technology, support from management, and image of an organization. External factors comprise labor laws, socio-economic pressures, competition, and standard of education(Day, 2014). A proper promotional policy with development and career growth prospects attracts efficient people. It raises the motivation and morale of the staff. Future growth affects the staffing process as the requirement of staff would increase with the growth of the organization. The kind of technology used by a company also affects the staffing process. Use of modern technology must be accompanied by continuous and proper training programs so that the employees remain updated with the latest technology. Moreover, the higher authority must support and take care of staffing procedures, transfer policies, promotion, and career development programs. The image of the organization affects staffing largely. Development, job security, work culture, and environment influence the image of an organization (Phillips et al., 2015). External factors like labor laws implemented by the government affect the policy of staffing to a great extent. For instance, if a company wants to abide by the Social equality and Upliftment policy, then it would have to give jobs to reserved classes. Socio-political groups thus widely affect staffing. The most important factor affecting staffing is educational standard and competition. When there is a demand for highly experienced and qualified staff, there rises competition between organizations to recruit efficient staffs. References Day, R. D. (2014).Leading and managing people in the dynamic organization. Psychology Press. Phillips, J. M., Gully, S. M. (2015).Strategic staffing. Pearson.
Friday, April 10, 2020
Organizing an Essay With Multiple Topics
Organizing an Essay With Multiple TopicsOrganizing an essay with multiple topics can be quite a challenge. The more you write the more words and ideas that seem to come to you and it is so tempting to keep going. All too often, you get bogged down and forget about some of the finer points and all of a sudden, you can't find the proper phrase or word to get to the part you are trying to highlight. Organizing an essay with multiple topics can help you stay focused, but here are some tips on how to do it.The first good tip for organizing an essay with multiple topics is to go back and reread. Have you thought about what your main topic might be? Have you already written it out? Re-read the essay again and consider whether it needs any changes. If it doesn't, revise it again and go back to it.Once you've re-read your essay, think about the points that you might want to include. Make sure that they are connected to the main theme of the essay. For example, if you're trying to make a point about 'intellectual freedom', then make sure that you include 'intellectual'freedom' in the same sentence or at least, phrase. You don't want to make it sound like one side is about freedom and the other is about freedom. Create strong connections between the different parts of the essay.One of the best things you can do when organizing an essay with multiple topics is to make sure that you organize them in order of relevance. This means that you won't be adding all kinds of information into one essay. Rather, you'll be inserting each relevant piece of information at the appropriate place in the essay.You may want to also break up the essay into parts. That is, have three parts. An introduction, body and conclusion. You can create some brief yet powerful opening sentences to begin with. Organize the essay around those introductory lines.Another way to organize an essay with multiple topics is to create divisions in the essay. For example, in the beginning, put the most important po ints first. In the middle of the essay, break it up into various subheadings. After you've done this, you will need to continue to work your way through the sections and add in those that are worth noting and worthy of your attention. In a way, you've already gotten your task accomplished.The first good tip for organizing an essay with multiple topics is to keep your eye on the main theme of the essay. Focus on that and work out your way around it, keeping in mind how best to connect the points to that theme. This way, you'll avoid repeating yourself and it will give you a better chance of coming up with the perfect essay for your essay writing assignment.
Saturday, March 21, 2020
Tim Winton free essay sample
Good morning sir and fellow students. Significant events are pivotal in enriching ones understanding of their identity, which leads to an understanding of where they belong in the world. This is shown through our prescribed text ââ¬Å"The Simple Giftâ⬠composed by Steven Herrick; as well as Tim Wintonââ¬â¢s ââ¬Å"The Turningâ⬠. | Steven Herrickââ¬â¢s free verse novel explores this value of events that shape a persons identity and hence their sense of belonging in their world. The cause of his alienation appears to be physical and psychological abuse from his father, lack of caring from his school and his run down neglected neighbourhood with its ââ¬Å"deadbeat no hoperâ⬠¦ downtrodden house in Longlands Rd, Nowheresvilleâ⬠. | The symbolism and scatological imagery establishes a decaying, decrepit and depressing environment, which reveals Billyââ¬â¢s isolation. Another evocative portrait is the internal monologue in the poem Sport in chapter one. The pain and sufferingââ¬â¢ of soulless tyranny endured by Billy, from the old bastard his father. We will write a custom essay sample on Tim Winton or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page This technique of expletive language is used to depict the poor relationship he shared with his father he gave me one backhander I felt the bloodâ⬠and his attitude toward the world hes living in. This is the first pivotal event that Billy retells, which initially demonstrates the change in his identity and belonging. | Later in the book Billy catches a train. He is uncertain where the train will take him. Herrick engages the reader with Billyââ¬â¢s significantly violent memory of his father with the forces of a fathers punch. The metaphoric terms further reveal Billys harsh living environment he is seeking to escape. Ernies train whistle in the poem ââ¬Å"Another crossingâ⬠symbolises the beginning of Billys new life contrasted favourably by Ernieââ¬â¢s ââ¬Ënot bossing you aroundââ¬â¢ where Herrick uses the technique of multiple perspective. His next positive role model is Irene, Bendaratââ¬â¢s Librarian, who welcomes him and encourages him to borrow books. | These two characters are used by Herrick to enrich Billyââ¬â¢s moral parameters and direct him in his notion of identity allowing him to reach his sense of belonging. Herrick induces us to feel empathy rather than antagonism to the protagonist. This is accomplished through the intimate use of language, changing perspectives and personal anecdotes. | Growth in maturity is shown as both Billy and Old Bill show signs of growth as they help each other. Billys growth is demonstrated as he becomes a different individual from the beginning of the narrative poem showing positive thinking ââ¬Å"sure theres hope in the world even for hobos like us. | Herrick also represents this change through his use of natural imagery and pathetic fallacy; exemplified in the poem ââ¬Å"Hobos like usâ⬠, ââ¬Å"Sit in the sunshineâ⬠. Old Billââ¬â¢s view of the world slowly starts to change, as the protagonist reduces his consumption of alcohol and ventures to move on with his life. This is done through Herrickââ¬â¢s use of Motif throughout the novel of Old Bills alcoholic nature. | While Old Bill demonstrates the symbolism of A Simple Gift when he gave his keys to his old home to Caitlin and Billy symbolizing his final pivotal moment enriching Billyââ¬â¢s, Caitlinââ¬â¢s and Old Billââ¬â¢s understanding of their identity, which leads to their understanding of where they belong in the world. | Tim Wintonââ¬â¢s ââ¬Å"The Turningâ⬠also explores this value of events that shape a persons identity and hence their sense of belonging in their world. The short story ââ¬Å"The Turningâ⬠tells the narrative of Raelene, which reveals the notion as grand paradox, where small lives are contrasted by the immense grand scale of the world. | The use of significant events in the life of Raelene enriches her understanding of her identity and through this allows her to discover where she belongs in the world. | The character of Raelene is in an abusive relationship where she feels she is isolated from the world around her. This is exemplified by the quote ââ¬Å"when Rae laughed at him he clouted her in front of the kidsâ⬠. The colloquial language and sparse imagery allows the reader to understand Raeleneââ¬â¢s lack of belonging. | The use of colloquialisms is repeated throughout the text, and is rich and powerfully inventive in demonstrating to the reader values of Australian society, and more specifically, values of belonging and not belonging in an Australian context. | Later in the text Raelene finds solace in meeting a couple whose relationship is affirmed on values of faith and spirituality. The juxtaposition of this relationship with her current spouse allows Raelene to discover who she really is. | Winton utilizes religious connotations and motifs in order to demonstrate this, as shown through the quote, ââ¬Å"she has something specialââ¬Å" whilst ââ¬ËChrist is holding his heartâ⬠. The use of religious intertextuality is also clear in that Winton describes the presence of a higher, spiritual power in the line ââ¬Å"Deep down Rae sensed that she wanted something from them. â⬠| Raelene then reflects on her newly enriched identity, as demonstrated through the motif of the snow globe. Within this globe is a symbol of her new-found religious faith, Jesus Christ. The holy figure becomes central to Raeleneââ¬â¢s discovery of where she belongs in the world. | This is exemplified by Wintonââ¬â¢s utilization of religious references, assonance and metaphor in the quote ââ¬Ësnowed birds as the van rocked, birds like stars. ââ¬â¢ Through close reference to The Turning it is clear to see Tim Winton has skillfully crafted a text, which strongly demonstrates the influence of significant events on an individualââ¬â¢s discovery of identity, which is then revealed to allow the individual to discover where they belong in the world.
Thursday, March 5, 2020
The Ring of Fire â⬠Pacific Ocean
The Ring of Fire - Pacific Ocean The Ring of Fire is a 25,000 mile (40,000 km) horseshoe-shaped area of intenseà volcanic and seismic (earthquake) activity that follows the edges of the Pacific Ocean. Receiving its fiery name from the 452 dormant and active volcanoes that lie within it, the Ring of Fire includes 75% of the worlds active volcanoes and is also responsible for 90% of the worlds earthquakes. Where Is the Ring of Fire? The Ring of Fire is an arc of mountains, volcanoes, and oceanic trenches that stretch from New Zealand northward along the eastern edge of Asia, then east across the Aleutian Islands of Alaska, and then south along the western coasts of North and South America. What Created the Ring of Fire? The Ring of Fire was created by plate tectonics.à Tectonic plates are like giant rafts on the Earths surface that often slide next to, collide with, and are forced underneath each other. The Pacific Plate is quite large and thus it borders (and interacts) with a number of large and small plates. The interactions between the Pacific Plate and its surrounding tectonic plates creates a tremendous amount of energy, which, in turn, easily melts rocks into magma. This magma then rises to the surface as lava and forms volcanoes. Major Volcanoes in the Ring of Fire With 452 volcanoes, the Ring of Fire has some that are more famous that others. The following is a listing of major volcanoes in the Ring of Fire. The Andes - Running 5,500 miles (8,900 km) north and south along the western edge ofà South America, the Andes Mountains are the longest, continental mountain range in the world. The Andean Volcanic Belt is within the mountain range and is broken up into four volcanic zones that include such active volcanoes as Cotopaxi and Cerro Azul. It is also home to the highest, active volcano - Ojos del Salado.Popocatepetl - Popocatepetl is an active volcano in the Trans-Mexican Volcanic Belt. Located near Mexico City, this volcano is considered by many to be the most dangerous in the world since a large eruption could potentially kill millions of people.Mt. Saint Helens - The Cascade Mountains in the United States Pacific Northwest hosts the 800 mile (1,300 km) Cascade Volcanic Arc. The Cascades contain 13 major volcanoes and nearly 3,000 other volcanic features. The most recent eruption in the Cascades occurred at Mt. Saint Helens in 1980.Aleutian Islands Alaskas Aleutian Islands, whic h consist of 14 large and 55 small islands, were made from volcanic activity. The Aleutians contain 52 volcanoes, with a few of the most active being Cleveland, Okmok, and Akutan.à The deep Aleutian Trench, which also sits next to the islands, has been created at the subduction zone with a maximum depth of 25,194 feet (7679 meters). Mt. Fuji - Located on the Japanese island of Honshu, Mt. Fuji, at 12,380 feet (3,776 m), is the tallest mountain in Japan and the worlds most visited mountain. However, Mt. Fuji is more than a mountain, it is an active volcano that last erupted in 1707.Krakatoa - In the Indonesia Island Arc sits Krakatoa, remembered for its massive eruption on Augustà 27, 1883 that killed 36,000 people and was heard 2,800 miles away (it is considered the loudest sound in modern history). The Indonesian Island Arc is also home to Mt. Tambora, whose eruption on April 10, 1815 was the largest in major history, being calculated as a 7 on the Volcanic Explosion Index (VEI).Mt. Ruapehu - Rising to 9,177 feet (2797 m), Mt. Ruapehu is the tallest mountain on the North Island of New Zealand. Located in the southern section of the Taupo Volcanic Zone, Mt. Ruapehu is New Zealands most active volcano. As a place that produces most of the worlds volcanic activity and earthquakes, the Ring of Fire is a fascinating place. Understanding more about the Ring of Fire and being able to accurately predict volcanic eruptions and earthquakes may helpà eventually save millions of lives.
Tuesday, February 18, 2020
Russian Symbolism and Mikhail Vrubel Research Paper
Russian Symbolism and Mikhail Vrubel - Research Paper Example From his earliest pieces of art, Mikhail Vrubel demonstrated an exceptional natural ability in modeling and figure drawing, however, he also engaged and valued the traditional academic pragmatism of the school. He quickly developed a taste for cooperating improvisation and symbolism, which would lead him to develop his personal style of painting with its exclusive brushwork, imitating the visual effect of mosaic art .He becomes influential sculptor, and draftsman who was a pioneer of modernism with an original vision. In his works, he was a pioneer of modernism in the styles, innovative and the techniques he put together to ensure that he was able to convey his feelings, complex inner life as well as an expression of spiritual world through his work art. Vrubel actually did not commence his artistic work until 1880s, after a successful effort in his pieces of art works, he become recognized in the early 1990s. He turned out to be symbolist and an expressionist at a time when the majo rity artists were still attributed to the pragmatic custom of the Wanderers. Being more practical and rejected these traditions and become more individualistic in his pieces of work, however he was misunderstood by his contemporaries though he was still considered the forefather of symbolism. Mikhail Vrubel usually chose to do his works from the real life situations this was later followed by most contemporary artists. Most of his scenes and characters were drawn from literature and tradition.
Monday, February 3, 2020
Anthropology of humor Assignment Example | Topics and Well Written Essays - 750 words
Anthropology of humor - Assignment Example Humor is a part of our day-to-day life and people use humor while conversing, imagining, and observing. Humor is also beneficial as it gives social, psychological, and material advantages to the persons who make humor. Humor is soothing for pain, grief, anxiety, and nervousness. Mcgraw and Warren are of the view that ââ¬Å"humor is a positive and adaptive response to benign violations. Humor provides a healthy and socially beneficial way to react to hypothetical threats, remote concerns, minor setbacks, social faux pas, cultural misunderstandings, and other benign violations people encounter on a regular basis. Humor also serves a valuable communicative functionâ⬠(1148). Humor whatever may it be is not innocent; it reveals as much as it hides. Also, humor does not actually produce aggression, it is not unrelated to aggression. Gruner, Humor and Aggression There have been so many attempts by philosophers, scientists, critical theorists, and comedians to theorize humor and delin eate its intricacies. There are several theories, which try to interpret humor. What is humor? What is its social function? What ought to be considered as humor? Humor theorists have tried to find answers to all the above questions and beyond. These theories try to understand all sorts of humor by assuming some antecedents, like incongruity, tension release (Freud) or superiority (Gruner). However, the problem with them is that they speculate humor as an outcome of some tragedies. According to Gruner, ââ¬Å"[p]rostitution could serve as the subject matter in a joke in order to make fun of others besides the girl and her clientâ⬠(122). Humor, even it is on some people only, is always related to the society as a whole. Therefore, humor could reveal the social unconscious and the traces of repressed aggression within it. Many times, apparently, ââ¬Å"the subject matter is sex [of humor], but the object of ridicule the conceited nature of both a young man and a young womanââ¬â ¢ (italics original) (Gruner, 126). Certainly, humor is an attack, a rebellion against the conceited nature of transactions in a non-transparent society. Charles R Gruner has offered a deep-going superiority theory of humor. He has contributed a lot in conceptualizing the humor. The central theme of Grunerââ¬â¢s theoretical formulation regarding the complexities of humor is that ââ¬Ëmuch sexual humor is can also profit in humorousness by its active ingredient of aggression. That is, if both aggression and sexual content each make for good jokes, a combination of the two adds up to double enjoyment.â⬠(emphasis original) (127). He equates humor with a game and firmly believes that there are winners, losers, and spectators in humor. Gruner is of the view that ââ¬Ësexual humor is one of the most prevalent and best-enjoyed kinds of humorâ⬠(127). Gruner's Superiority Theory of Humor has three fundamental assumptions. First, in the entire humorous situation there will be a winner and a loser. This notion is compatible with the human nature. Gruner believes that human beings are always competitive in their mind. In addition, humor has substituted the actual fight. Through humor people are competing with each other for hundreds of years. The winner, in Grunerââ¬â¢s notion, always makes fun of the loser. If we go to any talk show there we find comedians, who winners, making fun of politicians and elites, who are considered as losers.
Sunday, January 26, 2020
Effect of Diet on Colorectal Cancer
Effect of Diet on Colorectal Cancer CHAPTER 1 1.1 Introduction Colorectal cancer is considered to be a major cause of cancer morbidity and mortality. It accounts for over 9% of all cancer incidences; this makes it the third most common cancer cause with nearly 1.4 million new cases diagnosed in a year (WCRF, 2012) and the fourth most common cause of death (WHO, 2002). Both men and women are affected almost equally for colorectal cancer; 9.4% in men and 10.1% in women from all incident of cancer. However, it has a clear geographical variation which is not uniformly distributed throughout the world. It has been estimated that, the developed countries with a western culture accounts for over 63% of all colorectal cancer cases (Fatima AH, 2009). Though data available to show the clear situation in developing countries, growing evidences show that the problem would be also a concern for the low and middle income countries. The International Agency for Research on Cancer (IARC) was estimate that in 2008 colorectal cancer (CRC) is the 5th most common c ancer in SSA (Ferlay J, 2010 and Alice G et.al, 2012) Several risk factors can be linked with the incidence of colorectal cancer. Age and hereditary factors are the most important factors on which an individualââ¬â¢s cannot able to manage. The probability of being affected by colorectal cancer is increases after the age of 40. More than 90% of colorectal cancer cases reported among people in the age greater than 50 and older (Fairley TL , 2006). In addition, a large number of environmental and behavioral risk factors can also contribute for the development of colorectal cancer; among these dietary factors are the major one (Fatima AH, 2009). With the help of different dietary assessment methods such as food recalls and food record, wide range of epidemiological studies revealed that diet can strongly influences the risk of colorectal cancer, and changes in food habits might reduce up to 70% of this cancer burden. Diets with high in fat and calories, especially animal fat, protein rich, low level of calcium and vitamin D. are some of the nutrients which can be a risk factor for colorectal cancer. High meat consumption, mainly red meat and processed meat, is mainly associated with the development of colorectal cancer (Fatima AH and Robin P, 2009; Sandhu MS et.al, 2001; Norat T et.al, 2002; Larsson SC, 2006, Raphaà «lle L, 2008). On the other hand, those people who eat diets low in fruits and vegetables may have also a higher risk of developing colorectal cancer (Paul T et.al, 2001). For free living person, accurate estimation of routine dietary intake is very challenging in the study of diet and disease relationships (Jackson et. al, 2011). Moreover, there is no single method of assessment which is valid and optimal under all conditions to assess individualââ¬â¢s habitual dietary intake, but because of its ability to rank subjects according to their intake and also it is relatively inexpensive, food frequency questionnaires (FFQs) are often used in most epidemiological studies to assess usual dietary intake and disease development. In addition, Food frequency questionnaires (FFQs) have been used to assess long-term dietary intakes and an important exposure factor for the disease conditions (Sofi F et.al, 2008, and Streppel M, et. al, 2013). Therefore, the use of food frequency questionnaires has advantage over the other methods such as 24-hour recalls and food records since these methods do not reflect past diet intake or usual intake and they are also expens ive (Jackson et. al, 2011). Even though the Food frequency questionnaires (FFQs) is a more practical tool for assessing individual diets in large cohorts, it has also more associated with measurement errors than 24-hour recalls and dietary record assessment methods. In consequence, this can bias the relative risk estimates of diet and disease risk (Lin L et.al, 2013). One approach to improve effect estimates is through validation studies, in which individual diets by questionnaire is compared with a more precise and accurate method such as weighted dietary records (Jaceldo-Siegl et. al, 2009). The influence of dietary habit is central for the development of colorectal cancer but little is known about validity of dietary exposure assessment tools. The purpose of the study is, therefore, to evaluate the validity of the FFQ that will be used in assessing the relationship between dietary intake andcolorectal cancer. 1.2 Objective of the study To evaluate the food frequency questionnaires used to assessing the risks of dietary intake (at food group and nutrient level) for colorectal cancer with the three days weighted diet record method CHAPTER 2 2.1 Literature Reviews 2.1.1 The need of validation studies for food frequency questionnaires The role of dietary factors in the etiology of several cancers has been extensively investigated over the last few years including on colorectal cancer (Bazensky I, Shoobridge-Moran C, Yoder LH, 2007). However, accurate estimates of habitual dietary intake remain a challenge in the study of diet-disease relationships (Jackson et. Al, 2011). This is because dietary assessments could be affected by a number of factors such as motivation to complete assessments and reporting bias related with unstructured eating patterns(Livingstone MB et. al, 2009). Besides these, design of the study, outcomes of interest, and resources availability need to be considered when selecting an appropriate dietary assessment tool for a particular study(Jyh Eiin Wong et. al, 2012). In epidemiological studies, Food-Frequency Questionnaire (FFQ) is often chosen assessment method for estimating dietary intake and can provide valid and reliable estimates of usual dietary intake in a variety of populations (Navarro A, et. al,2001) where as the other possible and precise methods such as food records and 24-hour recalls do not reflect past diet or usual intake and are generally expensive (Jackson et. al, 2011, Lin L et.al, 2013). The FFQ is easy to administer, has relatively low cost, and provides a rapid estimate of usual food intake. Due to having this advantages it is more practical and frequently used dietary assessment tool for assessing individual diets in large cohorts. However, compared to other dietary assessment methods it has more associated with measurement errors that usually overestimate relative risks in studies of diet and disease risk (Jaceldo-Siegl et. al, 2009; Zulkifli SN, 1992; Fraser GE, 2003; Lin L et. al, 2013; Streppel M et. al, 2013). Therefore, nutritional values reported from FFQ data are subjected to both systematic and random errors that can significantly affect the design, analysis, and interpretation of nutritional epidemiologic studies (Carroll RJ, et. al, 1997). In addition, due to possible differences in design characteristics of the FFQ, e.g. the number of food items included, mode of administration, and also the need of cognitive process for portion size estimation, itââ¬â¢s validity can be affected (Jyh Eiin Wong et. al, 2012). Furthermore, the validity of the same FFQ may vary from one population to the other (Streppel M. al et, 2013). The above rationale can lead to the agreement that evaluation and validating of a FFQ is important in studying diet disease associations. Thus validation studies need to be performed to evaluate the level to which the FFQ agrees with the subjectsââ¬â¢ true dietary intake (Cade JE et. al, 2004). Moreover, validation studies can be also carried out to assess the level of measurement error associated with the FFQ (Streppel M et al, 2013 and Cade JE et. al, 2004). Providing the fact that there is no single method which is completely free from possible biases in dietary assessment, one approach to validate the estimates of effects through the help FFQ is by comparing with a more precise method (reference method), such as weighted food record, multiple dietary recalls and use of biomarkers (Jaceldo-Siegl et. al, 2009 and Lin L et.al, 2013). However, memory (recalls) and nutrient data are still influence estimates from the reference method (Jackson et. al, 2011, and Daures JP et. al, 2000 ). Generally, due to differences in food supply and dietary habits, there is no universally accepted FFQ that can be used for all populations in all situations. Elucidation of dietââ¬âdisease relationships requires dietary assessment methods which can sufficiently describe and quantify intakes, minimize errors and provide precise estimates of variability between individuals or groups(Kaaks R et. al, 1997; Carroll RJ e t.al 1997 and Lin L et.al, 2013). Therefore, it is vital to make sure that any FFQ must be reliable and valid to be used in the population of interest, need to be designed to meet the aims of study populations and has contain an up-to-date list of foods(Jyh Eiin Wong,et. al, 2012). 2.1.2 Incidence and mortality of colorectal cancer Colorectal cancer is one of the major cause of morbidity and mortality. Globally it accounts for over 9% of all cancer incidences; the third most common cancer and the fourth most common cause of death. Men and women are almost equally affected by colorectal cancer; it represents 9.4% in men and 10.1% in women (Jodi D Stoocky, et al, 1996). However, is not uniformly distributed throughout the world; it has a clear geographical variation. Mainly, colorectal cancer is a disease of developed countries with a western culture. It is estimated this region accounts for over 63% of all cases. Worldwide mortality attributable to colorectal cancer is approximately half that of the incidence. In 2008, over 1.2 million new cases and 608,700 deaths estimated to have occurred (Fatima AH, 2009 and Dagfinn A, 2011). The WHO report in 2012 also showed that, in 2008 among the deaths of an estimated 7.6 million people of all cancer cases colorectal cancer (CRC) accounted for over 600 000 of those deaths, with 70% occurring in lowââ¬â and middleââ¬âincome countries (WHO, 2012 and Meetoo D, 2008). This indicates that though the number of cases of CRC in SSA is thought to be very low in comparison to those diagnosed in the Western world, it constitutes a significant proportion of the cancers in this region (Alice G et.al, 2012). 2.1.3 Risk factors for colorectal cancer Colorectal cancer is widely considered to be an environmental disease; include a wide range of cultural, social, and lifestyle factors which are associated with the incidence of colorectal cancer. Age and hereditary factors are those that an individual cannot control and other modifiable environmental and lifestyle risk factors are also plays an important role in the development of colorectal cancer (Fatima A. Haggar, Robin P. Boushey 2009). Among the modifiable risk factors, diet habit is a major one and strongly influences the risk of colorectal cancer, and changes in dietary habits might also decrease up to 70 percent of this cancer burden. Diets with high fat content, especially animal fat, considered to be a major risk factor to cause colorectal cancer. However results of meta analysis supports the hypothesis that only intakes of red and processed meat are convincing dietary risk factors for colorectal cancer (Dagfinn Aune, 2011). In addition, different studies also revealed that the association of CRC risk with processed red meat may be stronger than that of fresh red meat (Sandhu MS et.al, 2001; Norat T et.al, 2002; Larsson SC, 2006 and Raphaà «lle L, 2008). The effect of fat consumption as possible etiologic factor for colon cancer is linked to favoring the development of a bacterial flora which capable of degrading bile salts to potentially carcinogenic compounds. The presence of heme iron in red meat believed to be the main mechanisms for the positive association in the development of colorectal cancer. In addition, exposing it to high temperatures could resulting the production of compounds such as heterocyclic amines and polycyclic aromatic hydrocarbons (Fatima A. Haggar, Robin P. Boushey 2009 and Genkinger JM, Koushik A, 2007). MS Sandhu et al in 2001 found that red and processed meat could contribute for colorectal cancer; a daily increase of 100 g of red meat and 25g of processed meat was associated with a 14% (OR;1.14, 95% CI:1.04 to 1.25) and 49% (OR; 1.49, 95% CI: 1.22 to 1.81) increased risk of colorectal cancer respectively (Sandhu MS et.al, 2001). On the other more recent follow up study by Cross, A.J et.al, the hazard ratios (HR) and 95% confidence intervals (95% CI) comparing the fifth to the first quintile for both red (HR; 1.24; 95% CI, 1.09-1.42; P Norat, T in 2001 also tried to conduct meta-analysis of articles published during 1973-99 in order to look the risk of consumption of red and processed meat for colorectal cancer. High intake of red and processed meat was associated with significantly increase risk of colorectal cancer. Average Relative Risk and 95% confidence intervals (CI) for the highest quantile of consumption was 1.35 (CI: 1.21-1.51) for red meat and 1.31 (CI: 1.13-1.51) for processed meat (Norat, T., et.al, 2002). A similar effect of red and processed meat also found in other meta-analysis of prospective studies published through March 2006 by Larsson SC and Wolk A in 2006. This meta-analysis of prospective studies support the hypothesis that high consumption of red meat and of processed meat is associated with an increased risk of colorectal cancer (Larsson, S.C. and Wolk, A., 2006). In addition, some studies suggest that people who eat a diet low in fruits and vegetables may have a higher risk of colorectal cancer. Differences in dietary fiber intake might have been also responsible for the observed geographic differences in the incidence rate of colorectal cancer (Janout V, and Kollaà ´rovaà ´ H. 2001 and Fatima AH, 2009). Age is an important non modifiable factors in the development of colorectal cancer. As the increases the likelihood of colorectal cancer diagnosis increases as well. Mostly its diagnosis is common after the age of 40, then rising sharply after age 50. More than 90% of colorectal cancer cases occur in people aged 50 or older. The incidence rate is more than 50 times higher in persons aged 60 to 79 years than in those younger than 40 years. However, colorectal cancer appears to be increasing among younger persons (Ries LAG, et al.. 2008, and Fatima AH, 2009). 2.1.4 Dietary protective factors for colorectal cancer; Vegetables, Dietary fiber, whole grains Given the roles of the colon and rectum as conduits for ingested food and the many potentially anti carcinogenic substances contained in fruit(8),vegetables(8),and cereals(9),these food groups are among the most widely studied in relation to colorectal cancer risk (Steinmetz KA, Potter JD. 1991, and Slavin JL, Martini MC et.al, 1999). Although the majority of studies have shown an inverse association between fruit and vegetable consumption and colorectal cancer risk, some prospective cohort studieshave also obtained inconsistent results; no association between fruit and vegetable consumption and the risk of having or developing a colorectal neoplasm (Paul T et.al, 2001). Results from a meta-analysis of 13 caseââ¬âcontrol studieshave suggested that increased dietary fiber intake is associated with decreased risk of colorectal cancer, although some other prospective cohort studies do not supporting such an association (Steinmetz KA et.al, 1994). Nonetheless, evidence from animal studies and few clinical trials continues to suggest that cerealsespecially wheat bran, contain substances, such as fiber, phytic acid, various phenolic compounds, lignins, and flavonoids, that might lower the risk for colorectal cancers.Cereal fiber might also bind carcinogens and modify glycemic index(Slavin JL , 1999, and Paul T et.al, 2001) In a Paul T et.al study in 2001, they were tried to associate the role of fruit and vegetable consumption and colorectal cancer. In this study 61, 463 women were followed for an average of 9.6 years and 460 incident cases of colorectal cancer were observed (291, 159 and 10 cases of colon, rectal and both sites respectively). In the entire population of this study, total fruit and vegetable consumption was inversely associated with colorectal cancer risk. The association was also showed that there is a doseââ¬âresponse effect; more evident among individuals who consumed the lowest amounts of fruit and vegetables was observed. In particularly, those individuals who consumed less than 1.5 servings of fruit and vegetables per day had a 1.65 relative risk (95% CI = 1.23 to 2.20;P = .001) for developing colorectal cancer compared with individuals who consumed more than 2.5 servings. However, no association between colorectal cancer risk and consumption of cereal fiber was observed in t his study. In conclusion this particular study revealed that individuals who consume very low amounts of fruit and vegetables have the greatest risk of colorectal cancer (Paul T et.al, 2001)
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