Degrees of Freedom for Independence in Two-Way Table

Degrees of Freedom for Independence in Two-Way Table The number of degrees of freedom for independence of two categorical variables is given by a simple formula:   (r - 1)(c - 1).   Here r is the number of rows and c is the number of columns in the two way table of the values of the categorical variable.   Read on to learn more about this topic and to understand why this formula gives the correct number. Background One step in the process of many hypothesis tests is the determination of the number degrees of freedom.   This number is important because for probability distributions that involve a family of distributions, such as the chi-square distribution, the number of degrees of freedom pinpoints the exact distribution from the family that we should be using in our hypothesis test. Degrees of freedom represent the number of free choices that we can make in a given situation. One of the hypothesis tests that requires us to determine the degrees of freedom is the chi-square test for independence for two categorical variables. Tests for Independence and Two-Way Tables The chi-square test for independence calls for us to construct a two-way table, also known as a contingency table. This type of table has r rows and c columns, representing the r levels of one categorical variable and the c levels of the other categorical variable. Thus, if we do not count the row and column in which we record totals, there are a total of rc cells in the two-way table. The chi-square test for independence allows us to test the hypothesis that the categorical variables are independent of one another. As we mentioned above, the r rows and c columns in the table give us (r - 1)(c - 1) degrees of freedom. But it may not be immediately clear why this is the correct number of degrees of freedom. The Number of Degrees of Freedom To see why (r - 1)(c - 1) is the correct number, we will examine this situation in more detail. Suppose that we know the marginal totals for each of the levels of our categorical variables. In other words, we know the total for each row and the total for each column. For the first row, there are c columns in our table, so there are c cells. Once we know the values of all but one of these cells, then because we know the total of all of the cells it is a simple algebra problem to determine the value of the remaining cell. If we were filling in these cells of our table, we could enter c - 1 of them freely, but then the remaining cell is determined by the total of the row. Thus there are c - 1 degrees of freedom for the first row. We continue in this manner for the next row, and there are again c - 1 degrees of freedom. This process continues until we get to the penultimate row. Each of the rows except for the last one contributes c - 1 degrees of freedom to the total. By the time that we have all but the last row, then because we know the column sum we can determine all of the entries of the final row. This gives us r - 1 rows with c - 1 degrees of freedom in each of these, for a total of (r - 1)(c - 1) degrees of freedom. Example We see this with the following example.   Suppose that we have a two way table with two categorical variables.   One variable has three levels and the other has two.   Furthermore, suppose that we know the row and column totals for this table: Level A Level B Total Level 1 100 Level 2 200 Level 3 300 Total 200 400 600 The formula predicts that there are (3-1)(2-1) 2 degrees of freedom.   We see this as follows.   Suppose that we fill in the upper left cell with the number 80.   This will automatically determine the entire first row of entries: Level A Level B Total Level 1 80 20 100 Level 2 200 Level 3 300 Total 200 400 600 Now if we know that the first entry in the second row is 50, then the rest of the table is filled in, because we know the total of each row and column: Level A Level B Total Level 1 80 20 100 Level 2 50 150 200 Level 3 70 230 300 Total 200 400 600 The table is entirely filled in, but we only had two free choices.   Once these values were known, the rest of the table was completely determined. Although we do not typically need to know why there are this many degrees of freedom, it is good to know that we are really just applying the concept of degrees of freedom to a new situation.

Write IEP Goals for Healthy Student Work Habits

Write IEP Goals for Healthy Student Work Habits When a student in your class is the subject of an Individual Education Plan (IEP), you will be called upon to join a team that will write goals for him or her. These goals are important, as the students performance will be measured against them for the remainder of the IEP period and their success can determine the kinds of supports the school will provide.   SMART Goals For educators, its important to remember that IEP goals should be SMART. That is, they should be Specific, Measurable, use Action words, be Realistic and theyre Time-limited. Here are some ways to think about goals for children with poor work habits. You know this child.  She or he has trouble completing written work, seems to drift away during oral lessons, and may get up to socialize while children are working independently. Where do you start setting the goals that will support her or him and make them a better student? Executive Functioning Goals If a student has a disability such as ADD or ADHD, concentration and staying on task wont come easily. Children with these issues often have difficulty sustaining good work habits. Deficits such as this are known as executive functioning delays. Executive functioning includes basic organizational skill and responsibility. The purpose of goals in executive functioning is to help the student keep track of homework and  assignment due dates, remember to  turn in assignments and homework, remember to bring home (or return) books and materials. These  organizational skills lead to tools to manage his daily life.   When developing IEPs for students who need help with their work habits, it is important to remember to key in on a few specific areas. Changing one behavior at a time is much easier than focusing on too many, which will be overwhelming for the student. Sample Behavioral Goals Focus attention with minimal supervision or intervention.Refrain from distracting others.Listen when directions and instructions are given.Identify what is needed each work period and each day for homework.Be prepared for assignments.Take the time to do things right the first time.  Think things out on your own before asking.Try things independently without giving up.Work independently as much as possible.Apply successful strategies when involved in problem-solving.Be able to re-state problems, instructions, and directions to help with understanding the task at hand.Take responsibility for all work being done.Participate fully in group situations or when called upon.Be responsible for self and belongings.Remain positive when working with others.Cooperate in both large and small group settings.Be considerate of the opinions of others.Seek positive solutions for any conflicts that may arise.Always follow the routines and rules. Use these prompts to craft SMART goals. That is, they should be achievable and measurable and have a time component. For example, for the child who struggles with paying attention, this goal incorporates specific behaviors, is actionable, measurable, time-bound, and realistic:   The student will attend (sit still with eyes on the teacher, keeping their hands to themselves, using a quiet voice) to a task during large and small group instruction for a ten-minute period, with no more than one teacher prompt in four out of five trials, to be measured by the teacher. When you think about it, many of the work habits lead to good skills for life habits. Work on one or two at a time, obtaining success before moving to another habit.

Mobile Health Care Payments Research Paper Example | Topics and Well Written Essays - 1000 words

Mobile Health Care Payments - Research Paper Example Mobile payment has become the single and most efficient and reliable mode of payment in hospitals. According to West (2012), the utilization of smartphones transformed the communication and methods of payment in commerce and health settings in the country. At Cleveland Clinic, these modes of payment are as a result of late payments of medical bills by patient in the hospitals after medication. Due to close monitor of the payment system, the hospital management realized that out of all the patients, only a few paid their bill in cash. Majority did not pay for their health services in the hospital (West, 2012). It resulted in the lack of revenue for the hospital since patient payment accounted for the majority of the clinic’s revenue. The impact of unpaid bills on the clinic was significant leading to ill health provision due to lack of enough health equipment in the hospital. Majority of health workers also could not receive pay since the revenue turnout was not sufficient. In addition, the introduction of Obamacare has also necessitated the use of smartphones in payment of hospital bills. Smartphones payment enables the hospital to collect revenue efficiently since the introduction of that Act. Implementation of that law meant an increase in the overall number of patients accessing the clinic and other health services (Shoval, 2013). Moreover, the Act places more responsibility on employers with the high-deductible plans on employees. The Obamacare, for this reason, is a sign of high revenue turn out to hospitals and clinic, and efficient collection of that revenue by hospital through smartphone payment would be significant. Additionally, the advancement in technology that is an entry of smartphones necessitated its use in hospital payment. This device is a valuable tool in revenue collection both for the health and commerce sector. As a result of this, Cleveland has decided to change the mode

Knowledge and asset management Essay Example | Topics and Well Written Essays - 1500 words

Knowledge and asset management - Essay Example Finally, the report gives how the report can be of help to other companies. (Han 2003) Change is inevitable in any organization. How an organization treats its stake holders, will define its success or failure in implementing any change. An organization needs to define who a stakeholder is and influence the stakeholder has in order to handle them and to have their support in the implementation process. It is worth to note that no stakeholder should be ignored. This is a case study of Seven Seas Technology (Drucker 1974). Seven Seas Technology is an international company dealing with ICT. The company operates globally with most interest in Africa market as the market for technology is high. The company deals with technology solutions for large companies and government agencies. In the recent past, the company has won in tenders with multinationals and governments in Africa. Currently the company is in a contract with the Zambian government to install a sea cable in the country. The company was also in a multi billion contract with the Nigerian government where it was involved in networking government ministries and other government agencies. The company also secured a contract with Vodafone where it developed a system to provide computing services to its customers in the entire world. So what is the real secret behind this accomplishment story? Seven Seas were previously referred to as Dataset Technology where it had a narrow scope of business. The company only focused on East African market. The company wanted to have a wider scope to tap the adaptation of technology in the whole of Africa. The company’s top management then thought it was good to rebrand the company and increase their capital in order for the company to operate in whole of Africa. Seven seas had to identify its stakeholders and develop new ways to make sure they

Strategically evaluation the airlines based on your choice using the SWOT analysis Essay Example for Free

Strategically evaluation the airlines based on your choice using the SWOT analysis Essay SWOT are meaning of the Strengths, Weaknesses, Opportunities and Threats. First, we discuss the strengths of Cathay Pacific. Cathay Pacific established in 1946, it’s a long history experience base on Hong Kong. It is a large-scale international airline around the world, includes flights to Asia, Europe, Africa and USA. The services that this airline provides are passenger transport and cargo services to 167 destinations in 42 countries and territories around the world. The Cathay Pacific is a strong financial position from Swire Group and its acquisition of Dragon Air is the market leader in Asia. The Airlines is a strong relationship with Air China and China Government are increased shareholding in Air China, it is a majority shareholding in Air Hong Kong with all cargo carrier services. On the other hand, they well-trained labor force of the high quality service, it around 29,800 employees in the world and the superb team is about 22,000 in Hong Kong. Cathay Pacific is adapting in organizational structure. At last, Cathay Pacific development of online service for its business growth, the passenger can book on the website for operating in many routes easily. {1} It have strong Media Centre and awards, for example, Slogan â€Å"Asia’s world city Hong Kong†, World’s Best Overall Airline, Best first class lounge and most punctual airline between London and Hong Kong. After that, provide the new types A340 of aircrafts for saving energy and efficient operations. Some of the long haul flights are always 100% Full. Second, the weaknesses of the Cathay Pacific are strong labor union and potential strike and negotiations. The environment of Long Haul Equipment, apparently the current A340 and B744 both of them have their weakness, B744 still have a little bit noisy, and A340 have a narrow cabin to affect the comfort. There are low margins and keen price competition. However, it is earning per share under fluctuation and uncertainty. Third, the Opportunities are stable economic growth and increase the needs of traveling in Asia. It development of global travel and tourism industry and air freight and logistics it is because of globalization. There is relaxation of China policy in outbound tour. The expansion of cargo services in new markets (Zhengzhou and Hyderabad). It is planning for a new establishment of {5} Joint Venture business with Shanghai’s 2 international airports. For the people, they can tend to luxury flight experience and passages know Cathay Pacific is safety. Finally, Threats of the Cathay Pacific is high fuel cost, and it is increasing competition from low cost carriers like the HK Airline and Air Asia. It became the economic fluctuation in Europe and USA. {6} It is potential terrorist attack under unstable world political situation.

Polygyny benefits Society :: Anthropology

Polygyny benefits Society Polygyny, the social arrangement that permits a man to have more than one wife at the same time, exists in all parts of the world. From our present knowledge, there are very few primitive tribes in which a man is not allowed to enter into more than one union. In fact, ethologists now believe that only one to two percent of all species may be monogamous (Tucker). None of the simian species are strictly monogamous; our closest relatives, the chimpanzees, practice a form of group marriage. Among the 849 human societies examined by the anthropologist Murdock (1957), 75% practiced polygyny. Many peoples have been said to be monogamous, but it is difficult to infer from the data at our disposal whether monogamy is the prevalent practice, the moral ideal, or an institution safeguarded by sanctions (Malinowski 1962). Historically, polygyny was a feature of the ancient Hebrews, the traditional Chinese, and the nineteenth-century Mormons in the United States, but the modern practice of polygyn y is concentrated in Africa, the Middle East, India, Thailand, and Indonesia. The extent to which men are able to acquire multiple wives depends on many factors, including the economic prosperity of the man’s family, the prevailing bride price, the differential availability of marriageable females, the need and desire for additional offspring, and the availability of productive roles for subsequent wives. Even in societies that permit polygyny, the conditions of life for the masses make monogamy the most common form of marriage. The two variations of polygyny are sororal (the cowives are sisters) and nonsororal (the cowives are not sisters). Some societies also observe the custom of levirate, making it compulsory for a man to marry his brother’s widow. It must be remembered that any form of polygyny is never practiced throughout the entire community: there cannot exist a community in which every man would have several wives because this would entail a huge surplus of f emales over males (Malinowski 1962). Another important point is that in reality it is not so much a form of marriage fundamentally distinct from monogamy as rather a multiple monogamy. It is always in fact the repetition of marriage contract, entered individually with each wife, establishing an individual relationship between the man and each of his consorts (Benson 1971). Where each wife has her separate household and the husband visits them in turn, polygynous marriage resembles very closely a temporarily interrupted monogamy.

Malignant Hyperthermia: What You Need to Know

Malignant Hyperthermia: What You Need to Know Ivy O. Corlew, BSN, RN, CNOR Conneaut Medical Center–OR Malignant Hyperthermia: What You Need to Know What is Malignant Hyperthermia or MH Malignant Hyperthermia (MH) is a rare, life threatening, pharmacogenetic disorder characterized by hypermetabolic state of skeletal muscle induced by inhalation anesthetics like halothane, sevoflurane, desflurane and the depolarizing muscle relaxant agent like succinylcholine (Rosenberg et al, 2007).Clinical signs are; Increased end tidal CO2 production which is an early sign, tachycardia, tachypnea, trunk or total body rigidity, masseter (jaw) muscle rigidity after succinylcholine which occurs commonly in children, marked temperature elevation (maybe a late sign), respiratory and metabolic acidosis, myoglobinuria(MHAUS, 2011). If left untreated the patient will experience cardiac arrest, kidney failure, blood coagulation problems, internal hemorrhage, and possibly death (slideshare, 2010) Nursi ng AssessmentNurses taking care of surgical patients must be knowledgeable regarding MH so they can identify clinical signs and symptoms early on, its emergent treatment, and be able to respond promptly and appropriately. Preoperative assessment by nurses are crucial in identifying the patient, who could be at high risk for Malignant Hyperthermia, so MH triggering agents can be avoided during anesthesia. Example of questions to ask to help screen for MH susceptibility are (AORN 2012): 1. Has anyone ever told you that you had a â€Å"bad† reaction to anesthesia? 2. Has anyone ever told you that you or your family member had a problem with anesthesia? . Have you or a family member experienced a high fever while under anesthesia? 4. Has anyone ever told you or a family member they had a difficult time opening your jaw during general anesthetic? 5. Has anyone in your family died unexpectedly in the operating room? 6. Have you or anyone in your family experienced sunstroke or heat stroke resulting in hospitalization? 7. Have you ever noticed dark â€Å"cola-colored† urine after a general anesthetic or after experiencing a heat-related illness? Treating MH Dantrolene IV is the only drug available in the market to treat Malignant Hyperthermia.It is difficult to mix and is time consuming to reconstitute. It comes in yellowish colored powder that when fully mix with non-bacteriostatic sterile water, the color stays the same. The new brand Dantrium IV (dantrolene sodium for injection) mixes in just 20 seconds (MHAUS, 2011). However, this is not what we have stocked in our cart. According to MHAUS (2011), dantrolene suppresses the exaggerated rise in muscle cell calcium that seems to trigger MH by binding to the calcium channel site in muscle that is responsible both for calcium release and, likely, calcium entry into the cell.Dantrolene may cause significant muscle weakness in patients with preexisting muscle disease and should be used with extreme caution in those patients. When used with calcium channel blockers (verapamil or diltiazem), dantrolene may produce life-threatening hyperkalemia and myocardial depression. Once a patient has been successfully treated for 36 hours with intravenous dantrolene, he/she may be switched to oral dantrolene until the CK or Creatine Kinase level is trending down and there is no further evidence of acidosis or hypermetabolism and temperature spikes. A recommended 36 vials be stocked.Treating Malignant Hyperthermia crisis is a complex nature, and it involves several staff members. The first thing to do in the event of suspected MH crisis is to recruit extra staff. The following steps are outline by role (MHAUS, 2011): The surgeon should stop or complete the procedure as soon as possible. The anesthesia provider stops inhalation agents; stops warming blanket; increase minute ventilation; inserts esophageal temp probe; inserts NG tube for lavage as needed; administers dantrolene IV; inserts an arteria l line; draws blood for chemistry, ck, coagulation, ABG.If peaked T waves on ECG, administers calcium then glucose and insulin. If T waves are not peaked and arrhythmia present, injects bicarbonate. The circulating nurse brings in MH cart; mixes dantrolene based on 2. 5 mg/kg with 60 ml of non-bacteriostatic sterile water, repeat dose until the signs are controlled. The circulating nurse should document the event. A second nurse assist in mixing dantrolene and hands syringe to anesthesia provider. A third nurse brings in emergency crash cart; places urinary catheter; assist in drawing blood or with other task.A fourth nurse brings in plastic bags with ice and cold IV fluids; places ice bags on exposed parts like groin, axilla, and neck (without compromising sterility); iced saline lavage of any open body cavities such as the stomach, bladder, or rectum. Cold I. V. fluids are administered using 0. 9% sodium chloride, but Lactated Ringer’s is avoided so that acidosis is not wor sened (Martin, 2009). Stop cooling measures when temperature falls to 38 °C (MHAUS, 2011). A laminated copy of MHAUS dantrolene dosage chart is located on top of MH cart to minimize precious time wasted in calculating dosage per kilogram.As soon as patient is stabilized, transfer patient to ICU or call transfer center for an emergent transfer to UH Case SICU or ED. Knowing your Role All staff involved in the MH crisis response should conduct a debriefing meeting as early as possible. Points to consider including (AORN, 2012): 8. Was the MH cart adequately stocked and immediately available? 9. Were enough staff members available to manage the crisis effectively? 10. When staff members responded, were they familiar with task expected in MH crisis? 11. Was MHAUS appropriately notified? 12. Do staff members have other ideas about planning care for a future MH crisis? 3. Has a root-cause analysis been done (MH is considered a sentinel event)? Staff Competency By using the mannequin as our patient, and mixing the expired dantrolene from MHAUS, perioperative staff did fairly well during the MH mock drill simulation by following thru with the expected roles. MH drill should be held at least quarterly to help perioperative staff practice early recognition of MH crisis and how to act accordingly. MH drill also improve OR (operating room) team coordination and provides opportunities to serve in each of the four roles mentioned (Martin, 2009). PreventionEarly detection of clinical signs and symptoms of MH, knowing your role and a prompt response to this emergent crisis can save your patient’s life. MH crisis prevention is the key and the best treatment you can provide to your patient. Knowledge about MH is a must for nurses taking care of a patient before, during and after operative care. Armed with this knowledge, you can make a difference in your patient’s lives. References AORN (2012). AORN Malignant Hyperthermia Guideline. In Perioperative Standards an d Recommended Practices: For Inpatient and Ambulatory Settings (pp. 5,8-9). Retrieved from http://online. statref. om/titleinfo/fxid-234. html Martin, C. L. (2009). A Practical Guide for Malignant Hyperthermia Management. OR NURSE 2009, 24. Retrieved from www. ORNurseJournal. com Rosenberg, H. , Davis, M. , James, D. , Pollock, N. , & Stowell, K. (2007). Malignant Hyperthermia. ORPHANET JOURNAL OF RARE DISEASES. doi:10. 1186/1750-1172-2-21 Malignant Hyperthermia Mock Drill Kit. (2011). Healthcare Professionals. Retrieved from http://www. mhaus. org/healthcare-professionals/#. T6rV3VI2cTY Malignant Hyperthermia (2010, January 28). [Video File]. Retrieved from http://www. slideshare. net/wright958/malignant-hyperthermia-3015604

IEP Inclusion Essay

The main function of the Individuals with Disabilities Education Act (IDEA) has always been to integrate the value of learning and development among special students within the educational curriculum. Recognizing the current trends and needs of students, the law was changed to address the functions of consolidating different measures to enhance approaches that bridges further effectiveness in carrying out its goals and objectives. Reacting to its application within Georgia (GA), these new tenets diversified the value of integrating new laws and furthering opportunities that infused better means of facilitation, transmission, and redirection of necessary elements essential towards increased appreciation and learning. One essential application of the amendment of the IDEA corresponds to the acquisition and training of highly qualified teachers. Since the practice of inclusion of special students within the classroom requires the necessary skills and competence among educators, the application of standards coincide not only within the precept of IDEA but also on other educational mandates such as the No Child Left behind Policy (NCLB). By ensuring that Georgian teachers are fit to meet the needs of students via training and development of necessary skills, they can help transcend towards furthering means to induce inclusion and determine the best programs available for students regardless of their physical and cognitive capacities (Hyatt, 2007). Another crucial component shaping Georgia in adherence to the needs of facilitating inclusion and the needs of special students revolves around the procedural safeguards present within the state. Here, the board of education alongside educational institutions are the ones who ensure that careful application of protective mandates is given towards special students particularly in the realm of disciplining, mediation, and the process of intervention during specific cases. Such directions can then induce better means for reinforcing accountability and responsibility among educators and administrators in congruence to the mandates provided by IDEA in reference to protective mechanism for the needs of special students and the promotion of inclusion (Hyatt, 2007). The third aspect that needs to be considered revolves around the nature of individualized education programs. Under the specific tenets advocated by the Georgian Board of Education, it has mandated and amended new conditions prior to the implementation of an IEP program. Under these conditions, it must correspond to particular standards and approved by the supervisory committee handling specific subjects and disciplines. In here, modifications within the IDEA were introduced to carry out a wider span and target new means of consolidating a wider scope in trying to reach out towards the needs of special students particularly those with disabilities (Georgia Department of Education, 2009). With regards to early intervention programs, specific attention is made by the Georgia Department of Education wherein they try to incorporate different schemes in reaching out towards special students and making them take part in government sponsored programs. In here, specific consideration is made the derivation of rubrics and EIP guidelines so as to guide both parents and educators about the appropriate model that is effective for each participant (Georgia Department of Education, 2009). Alongside this process is the condition towards centering options to help students meet the demands of their grade level and adhere to the standards provided by IDEA. The last part circumvents with the process alignment with the No Child Left behind Policy. Under this mandate, the Georgia Department of Education has corresponded and integrated its school policies and its programs according to its mandates. Here, amendments and rules were reinforced to guide educators and administrators the appropriate perspectives in helping students with disabilities become readily available and competent (Idea Partnership. org, 2007). Similarly, these conditions also center in areas such as special education services, school improvement, and addressing proficiency standards. All these conditions then necessitate better means to justify and outline congruence with both the differing perspectives and mandates provided by IDEA and NCLB. In the end, it can be argued that the Georgia Department of Education has indeed consolidated efforts towards bridging and redefining the mandates of the IDEA. Here, they had sought to help induce inclusion within the classroom by consolidating the directives provided by the IDEA and applies them according to the norms prevalent within educational institutions. By reinforcing these policies, Georgia remains responsive and accountable to the increasing needs of special students and opens up opportunities for growth and development.

GI Jane essays

GI Jane essays Women in military positions is an issue that has been very controversial for many years. Today, the typical occupational field of female service members is mainly administrative or medical but filmmakers are attempting to show otherwise. In the 1997 hit movie G.I. Jane, directed by Ridley Scott, one female whose determination reaches heights beyond anyones expectations smashes this image of females in the military. The portrayal of women in the movie G.I. Jane not only suggests that women can do anything the military men can do but also shows some political corruption and manipulation. Historically, female military members served as primarily medical doctors, nurses, typists, translators, seamstresses and other clerical occupations. There were a few instances where women did seem to have an interest in joining the men in infantry type positions during the World War II era, but all attempts to enlist were denied. The roles women played in the military were very important and essential for support of the armed forces but limitations were soon challenged. The women in some areas of the military, (ie. The Navy Nurse Corps), were not even given a rank equivalent to those of the men, and in 1942 President Roosevelt approved a congressional enactment to give those women a relative rank. The interests of women to attempt to enlist into infantry positions and contribute in wartime situations grew after WWII due to the increase in womens rights activations and demonstrations. New womens rights leaders came forth to fight for equality of women and made large gains, but women in combat situations was still an issue the military could not approve of. Today, women rank highly amongst all military members and fill many important positions. They are todays aircraft mechanics, computer operators, air traffic controllers, sailors, Commanding Officers and leaders in all branches of the United S...

Marine Herbivores

Marine Herbivores An herbivore is an organism that feeds on plants. These organisms are referred to as herbivorous. An example of a marine herbivore is the manatee. The opposite of an herbivore is a carnivore or meat-eater. Origin of the Term Herbivore The word herbivorous comes from the Latin word herba (a plant) and vorare (devour, swallow), meaning plant-eating. Size Matters Many marine herbivores are small because only a few organisms are adapted well enough to eat phytoplankton, which provides the bulk of the plants in the ocean. Terrestrial herbivores tend to be larger since most of the terrestrial plants are large and can sustain a large herbivore. Two exceptions are manatees and dugongs, large marine mammals who survive primarily on aquatic plants. However, they live in relatively shallow areas, where light is not limited and plants can grow larger.   Advantages and Disadvantages of Being An Herbivore Plants such as phytoplankton are relatively abundant in ocean areas with access to sunlight, such as shallow waters, at the surface of the open ocean, and along the coast. So an advantage of being an herbivore is that food is pretty easy to find. Once it is found, it cant escape like a live animal could. On the disadvantage side, plants are more difficult to digest and more may be needed to provide adequate energy for the herbivore.    Examples of Marine Herbivores Many marine animals are omnivores or carnivores. But there are some marine herbivores that are wells of marine herbivores in various animal groups are listed below. Herbivorous Marine Reptiles: Green sea turtle (who are named for their green fat, which is green because of their plant-based diet)Marine iguanas Herbivorous Marine Mammals: Manatees, as already mentioned above.Dugongs Herbivorous Fish Many tropical reef fish are herbivores. Examples include:   ParrotfishAngelfishTangsBlennies These coral reef herbivores are important to maintaining a healthy balance in a reef ecosystem. Algae can dominate and smother a reef if herbivorous fish arent present to help balance things out by grazing on the algae.  Fish can break down the algae using a gizzard-like stomach, chemicals in their stomach and intestinal microbes. Herbivorous Invertebrates Some gastropods, such as limpets, periwinkles  (e.g., the common periwinkle), and queen conchs. Herbivorous Plankton Some zooplankton species Herbivores and Trophic Levels Trophic levels are the levels at which animals feed. Within these levels, there are producers (autotrophs) and consumers (heterotrophs).   Autotrophs make their own food, while heterotrophs eat autotrophs or other heterotrophs. In a food chain or food pyramid, the first trophic level belongs to the autotrophs. Examples of autotrophs in the marine environment are marine algae and seagrasses. These organisms make their own food during photosynthesis, which uses energy from the sunlight. Herbivores are found at the second level. These are heterotrophs because they eat the producers. After herbivores, carnivores and omnivores are at the next trophic level, since carnivores eat herbivores, and omnivores eat both herbivores and producers. References and Further Information Cornell University. Herbivory in Fish. Accessed October 31, 2015.Harper, D. Herbivorous.  Online Etymology Dictionary. Accessed October 1, 2015.National Geographic.  Autotroph.  Accessed September 29, 2015.Map of Life. Gut fermentation in herbivorous animals. Accessed October 31, 2015.Morrissey, J.F. and J.L. Sumich. 2012. Introduction to the Biology of Marine Life. Jones Bartlett Learning. 466pp.

A career in culinary arts Research Paper Example | Topics and Well Written Essays - 1250 words

A career in culinary arts - Research Paper Example For such reasons, the world of culinary arts has attracted my interest for a long time. A career in culinary arts would show me how people can be satisfied by good food; moreover, it takes training and skills to become a culinary expert. Nevertheless, the good salary and the fulfillment of seeing people pleased with their meals are the greatest rewards of a culinary expert. Food can greatly satisfy people, being one of the basic needs. A lot of people find good food as comforting, a balm to the broken heart and weary soul. Recently, many studies have been conducted to evaluate the connection of food to happiness. Remarkably, some results were worth looking into because researchers have found that certain types of substances like DHA ( simply known as Omega 3) can alleviate depression in individuals with highly-stressful situations (Gorman, 2011). In fact, the researcher named Hibbeln has influenced the American Psychological Association to prescribe Omega 3 Fatty food to their mentally ill patients ( p.2). Food promotes over-health as it supports growth and development. For many decades, the US Food Pyramid guide was the yardstick to healthy diet; however, this was discarded in 2005 as the Harvard School of Public Health came up with a new MyPyramid that was fully endorsed by the USDA ( hspa.harvard.edu). Old beliefs such as eggs were bad and that all fats posed health risk were discarded; instead, focus was more on quality of food rather than restrictive calorie-counting. It can be said then that food gives back to people in both ways- positively or negatively. But if people make wise decisions about the food they eat, they can be very healthy. This is where the role of a culinary expert comes in- to prepare healthy and satisfying meals so people can have a better life. Now, that we understand the crucial role that food plays in our daily lives, it is time to focus on how to become a culinary