Friday, October 25, 2019

Graduation Speech: Stand Tall, Set Your Goals High :: Graduation Speech, Commencement Address

As I look out on this crowd tonight, I see a diversity of people. I see grandparents who have raised their families, lived through many crises and have accomplished many goals. I see mothers and fathers who have fulfilled some of their dreams, but still may be struggling with challenges and goals to meet. Some families are here tonight to watch their oldest child graduate. For other parents, they’re here to celebrate with their youngest child. Yet all parents wish the best for their children and hope to see them succeed in their endeavors. And last, I see our graduating class. We are excited about what lies ahead, yet some of us are filled with uncertainty about our futures. But we all have one thing in common: We have just begun to search for our hopes and dreams. As we start out on our journey some of us will find the golden path right away. This will take us straight to our destination with few obstacles along the way. Others will take a path that will lead them to more obstacles and hardships. And some will hit a dead-end. But remember, most dead-ends do have room for a turn-around, and each new day can be a fresh start. Without a doubt, the biggest challenge I have faced in my life is adapting to life without my father. Watching my family start a new life after his death has made a big impact on me. This tragedy has encouraged me not to take life for granted, and to grab every opportunity that life has to offer. It has taught me to take a chance in life. It has shown me how suddenly life can change and how fragile it really is. Life is precious, be thankful for what you have, and try and make the most of it. Each of you should take a moment to reflect on your past, to remember those who have helped you get here tonight: your parents, your teachers and your friends. Hold on to these memories that are precious to you. As we leave Warren, our paths will lead us to a world full of opportunities and career choices. Using our technical, manual or personal skills, going to college or developing our creative and artistic talents are all possibilities. As children, we dreamed of becoming teachers, nurses, policemen or astronauts. But as we reached our teen years, our true interests and abilities began to materialize.

Thursday, October 24, 2019

Individual Learning Essay

Work-study Enterprise (WSE), founded in 1994 in Matteson, Illinois offers childcare and early childhood education. WSE believes in developing the whole child and strives to show God’s love to all entering its doors. WSE enrollment is open to kid’s age 2 through 15 and offers a safe and positive environment for all. In addition, the organization offers before and after school programs, to include summer camps. A for-profit organization, WSE seeks to keep enrollment high in order to make child care cost affordable for all in the Chicago land area (Mitchell & Mitchell, Work-study Enterprise, April 4, 2013). SWOT Analysis Balanced Scorecard According to Blocher (2010), the balanced scorecard (BSC) is an accounting report that includes the firm’s critical success factors in four areas: (1) financial performance, (2) customer satisfaction, (3) internal processes, and (4) learning and growth (p.11). The following is a balanced scorecard for Work-study Enterprise Inc. Critical Success Factor Objective Measure Target Initiative Financial performance Increase Income Annual growth of income from specific courses +5% by end of fiscal year 20141 Offer more specific topics of tutoring (algebra, statistics, etc.) Reduce overhead expenses Annual Expenses -10% by end of fiscal year 20142 Explore tax benefits, give philanthropic contributions, and apply for government subsidies Customer satisfaction Retain Current Enrollees Enrollee turnover -10% by end of fiscal year 20143 Improve communication between staff and parents Enroll New Clientele Clientele enrollment count 25 additional contracts by end of fiscal year 20144 Improve marketing campaigns and courses offered to attract new clients Internal Process Increase GPA Number of grading periods to raise letter grade in a particular subject < 6 weeks Implement strict policy and procedure for increasing letter grade/GPA Learning and Growth Improve Tutorial Service through training classes Number of tutors lacking new tutorial training Increase by 50% by end of 2014 Implement a tutorial training program, providing training opportunities each month Discussion of Critical Success Factors (CFSs) CFSs are defined as â€Å"the limited number of areas in which results, if they are satisfactory, will ensure competitive performance for the organization† (Ram & Corkindale, 2014, p.152). Work-study Enterprise (WSE) will be able to deliver quality tutorial services for affordable prices, when the costs and quality of its services are addressed. The implementation of critical success factors will allow WSE to process each success factor into a particular category. Work-study Enterprise, Inc., can accomplish this by focusing on financial and tutorial goals that are in sync  with one another. Work-study Enterprise can achieve this by changing the way in which the company hires tutors. Financial The first CSF is financial performance. Financial performance is important because it measures the profitability and market value which are good indicators of how well the firm satisfies its owners and shareholders (Blocher, 2010, p.11). If a company can increase profits while decreasing its overhead, it will be in a better position to maintain positive profits. Profitability is gained strictly on how well WSE choose each critical success factor. The bottom line is to satisfy the owners. This critical success factor is not mutually exclusive, and depends on the other CFSs to keep Work-study Enterprise Inc doors open for business. Customer Satisfaction The second CSF is customer satisfaction. Customer satisfaction is important because satisfied customers tend to be loyal and repeat buyers. Measures of quality, service, and low cost, are three good indicators of how well a company satisfies its customer (Blocher, 2010, p.11). The objective here is for WSE to retain current enrollees and enroll new clientele. Current enrollees are the ones that continue to pay the bills (operating expenses), and enrolling new clientele helps increase profits thus assisting the financial CSF. Work-study Enterprise is looking to add online learning because it will increase the efficiency and effectiveness of it program (Cheawjindakarn, Suwannatthachote, & Theeraroungchaisri, 2012, p.61). This can be accomplished by hiring online tutors. A case study found that in order for online-course resources to be used effectively, the CFSs that need to be considered are: human factors pertaining to the instructors; the instructors’ and students’ tec hnical competency; the instructors’ and students’ mindset (about learning); the level of collaboration intrinsic in the course; and the level of perceived IT infrastructure and technical support (Soong, Chan, Chua, & Loh, 2000, p.102). These same CFSs align with WSE success factors. The human factors pertaining to the instructors can be found under financial CSF. The instructors and students technical competency is important in the learning and growth CSF. The instructors and students mindset about learning can be found in the internal process of improving the letter grade or increasing a  student’s GPA in less than 6 weeks. The level of collaboration intrinsic in the course and the level of perceived IT infrastructure and technical support can be found in customer satisfaction critical success factor. Internal Process The third CSF is internal process. WSE internal process is important because it measures efficiency and effectiveness of its services (Blocher, 2010, p.11). Greater efficiency and effectiveness can result in satisfied clients and more business. Raising GPAs and/or letter grades in tutorial services are very important. If a student is failing in a subject or is having a hard time comprehending the way his or teacher instructs, parents generally seek tutorial services. If WSE are able to help students by raising their GPA or letter grade, clients will want to continue with their services. This is why the choice to raise a letter grade in less than 6 weeks is a critical success factor. Learning and Growth The fourth CSF is learning and growth. Learning and growth is important because it can help develop and utilize human resources and strategic goals (Blocher, 2010, p.11). By increasing the learning of the tutors, not only do the tutors become better and more efficient in their services, the parents/students become more satisfied. The addition of a tutorial training program will help with the growth of the tutors and the enterprise (Cherryl Mitchell, Work-study Enterprise, April 4, 2014). Tutoring has become an increasingly effective tool for academic support in the last 25 to 30 years (Holliday, 2012, p.21). This is why many universities and colleges offer tutorial services, however, outcomes may vary depending on the tutor to student interaction. Evaluation of Work-study Enterprise Inc. Financial Reducing the overhead expenses in order to increase higher revenues is the objective for any rationale organization, if not all. This is because every company would like to maximize its profits in the most efficient way while still providing an effective service to its clientele. Work-study’s goal is to increase its profits by 5 percent, and by offering more specific  topics of tutoring such as algebra, statistics, chemistry, etc, the tutorial service is on track. Offering a wider range of courses to tutor will target new customers and offer more services to existing clients thus bringing in more profits for the company. By exploring tax benefits, giving philanthropic contributions, and applying for government subsidies, the company can help reduce overhead. In addition, if the company increases its efficiency in the internal process CSF, a decrease of 10 percent of its overhead can be obtained by year end 2014. The financial CSF appears to be on target at Work-study Enterpr ise, Inc. It may be impossible to eliminate all overhead; however, taking advantage of the aforementioned can minimize some overhead expenses. Customer Satisfaction One objective under the customer satisfaction CFS is to retain current enrollees. A growing body of empirical work supports the fundamental logic that customer satisfaction should positively influence customer retention (Anderson, Fornell, & Mazvancheryl, 2004, p.173). Work-study Enterprise realizes that their customers are the key to their success thus stressing the importance of great communication. Furthermore, satisfied customers are able to make positive recommendations to others. Since its inception in 1995, communication between staff and parents is of the utmost importance to Work-study Enterprise. Through great communication WSE have been able to reiterate special incentives to existing customers, receive feedback about the services rather good or bad, and settle disputes in a prompt manner. Implementing good lines of communication between its staff and parents has allowed WSE to keep clients for as long as the program will permit the child’s age. In 2010, Work-study Enterprises signed a contract with District 162, which allowed WSE to offer its services to all the schools in its district. By securing a contract with District 162, WSE is on track for meeting the objective of adding 25 more contracts. Furthermore, as a result of signing with the district, WSE marketing campaign has opened opportunities for securing more districts. Internal Process Work-study Enterprises Inc. seeks to increase the letter grade or GPA of a student less than 6 weeks. This time starts on the first day a student  meets with a tutor and ends 6 weeks after. Though students receive report cards 4 times a year or every 9 weeks, WSE likes to guarantee 6 weeks to increase a child’s letter grade. If the grade is not increased, the tutors will have an additional 3 weeks to spend more time with the student (s). The implementation of strict policies and procedures for increasing letter grades/GPAs has allowed WSE clients to pass their courses, as well as retain satisfied customers. Learning and Growth In the past, clients of Work-study Enterprise have committed on the disparity in training of its tutors. The majority of the tutors at WSE are high-school and current college students. However, the disparity in training will be rectified by offering a tutorial training each month. The critical success factor seeks to increase to their goal of 50 percent by the end of 2014. The addition of this tutorial program each month has allowed tutors to provide a greater learning opportunity for the students. In addition, WSE is in the process of hiring a new trainer to focus specifically on training tutors. Overall Work-study Enterprise Inc. is on track of achieving each of its critical success factors by the end of 2014. As previously mentioned, critical success factors are interdependent. In other words, all critical success factors must work in tandem in order for Work-study Enterprise Inc. to achieve its strategic goals. The bible tells us â€Å"Faith without works is dead† (James 2 :26 KJV). Just because one prays does not mean that his business will be successful. Business owners must develop a strategy and work that strategy. Work-study Enterprise Inc have been working their strategy for nearly a decade and this is why their company is still going strong. Reference Anderson, E.W., Fornell, C. & Mazvancheryl, S.K. (2004). Customer satisfaction and shareholder value. Journal of Marketing, 68(4). p. 172-185 Retrieved from http://www.jstor.org/stable/30162024 Blocher, E. J., Stout, D. E., Juras, P.E., & Cokins, G. (2010). Cost Management: A Strategic Emphasis (6th ed.). Boston, MA: McGraw-Hill Irwin Publishing. Cheawjindakarn, B., Suwannatthachote, P., & Theeraroungchaisri, A. (2012). Critical success factors for online distance learning in higher education: A review of the literature. Creative Education, 3, p.61-66. Retrieved from http://search.proquest.com/docview/1353565510?accountid=12085 Holliday, T. (2012). Evaluating the effectiveness of tutoring: an easier way. The Learning Assistance Review17(2). p. 21-32. Retrieved from http://go.galegroup.com/ps/i.do?id=GALE%7CA308883380&v=2.1&u=vic_liberty&it=r&p=AONE&sw=w&asid=a5e72816293a40e9cba7076990429c51 Ram, J., & Corkindale, D. (2014). How â€Å"critical† are the critical success factors (CFSs)?: Examining the role of CFSs for ERP. Business Process Management Journal, 20(1). p.151-174. Retrieved from 10.1108/BPMJ-11-2012-0127 Soong, M.H., Chan, H.C., Chua, B.C., & Loh, K.F. (2001). Critical success factors for on-line course resources. Computer & Education, 36, p.101-120. Retrieved from http://www.nc12z.com/uploadfile/cms/books/269/ts269019.pdf

Wednesday, October 23, 2019

Environmental Ethics and Eco-Tourism

IntroductionIn the last few decennaries, bookmans have begun to develop the subject of planetary environmental moralss. In making so, they have encountered two obstructions. First, much environmentalism cloaks itself in the discourse of prudence and security, and therefore, ethical concerns are hard to place. Second, when bookmans do acknowledge ethical issues, they explain them in footings of how people treat the nonhuman universe and progress a bio-centric or eco-centric moral esthesia. This is a job to the grade that it neglects infinite cases of environmental unfairness that involve the manner humans treat each other, utilizing nature as a medium ( Wapner & A ; Matthew, 2009, p. 203 ) . A new field of environmental consciousness has progressively as a chief attending in doctrine, the possible rational involvement particularly for geographers. Since so the environmental moralss began with a few influential articles and monographs published in the early 1970s. In 1979, so took off near the bend of the decennary with a new diary, environmental moralss launched, and increased in the eightiess with a aggregation of literatures increasing by the latter portion of the decennary. As we concerned, environmental moralss is potentially be fluent in some of the most profound inquiries that confront late modern societies, whose widespread degree of concern over environmental crises across local to planetary proportions. Environmental moralss, which has come into its ain by siting the crest of a moving ridge of popular concern over human impacts on the environment, therefore finds itself in a really hard place to present any conceptually satisfactory manner out of this tangled we b. Geographers are showing an increasing involvement in environmental moralss ( Proctor, 1998 ) . Nowadays, we seen many environmental issues caused by assorted factors which are really familiar to us and it happens every twenty-four hours in our life universe. As we already cognizant of, three chief facet of environment is land, H2O and air. These constituents are interrelated to each other in fulfilment of human basic demands. The importance of natural environment to the human existences became less precedence because of the humans’ wants is transcending their demands in these modern yearss. This survey will light the significance of environmental moralss, environmental current issues and its impact. The treatment will be on the non-prudential dimensions of planetary environmental personal businesss and explains how a focal point on the manner humans mistreat each other can function as a cardinal ethical focal point for apprehension and turn toing environmental unfairness. Overall, it aims to supply a vocabulary for progressing an anthropocentricity [ 1 ] esthesia toward planetary environmental ethical concern.AimThe aims of this survey are to accomplish understanding on:The significance of environmental moralss.The currents issues related to environmental moralss.Eco-tourism and environmental impacts issues.ENVIRONMENTAL ETHICSEnvironmentcan be defined as â€Å"theamountsum of all milieus of a life being, includingnatural forcesand other life things, whichprovide conditionsfordevelopmentand growing every bit good as ofdangerandharm † andmoralsscan be defined as â€Å"the basicconstructsandcardinal rulesof nice homobehavior. It includessurveyof cosmopolitanvaluessuch as the indispensable equality of allwork forcesand adult females, human ornatural rights, obeisance to thejurisprudenceofland,concernforwellnessandsafetyand, progressively, besides for thenatural environment † ( â€Å" BusinessDictionary.com – Online Business Dictionary, † 2015 ) . Environmental moralss is concept and exercising about proper apprehensiveness aimed at, rules in, and duties refering the natural universe. By traditional accounts, moralss is people associating to people in justness and love. Environmental moralss starts with human concerns for a quality environment, and some think this shapes the ethic from start to complete. Others hold that, beyond inter-human concerns, values are at interest when worlds relate to animate beings, workss, species and ecosystems. Harmonizing to their vision, worlds ought to happen nature sometimes morally considerable in itself, and this turns moralss in new waies. ( Nicholas Bunnin and E. P. Tsui-James, 2003, p. 517 ) . In the other point of position, Brennan ( 2011 ) enlightened the environmental moralss as the subject in doctrine that surveies the moral relationship of human existences to, and besides the value and moral position of, the environment and its nonhuman contents. Equally far as I concerned, there were many inquiries can be discussed on environmental issues raised by Nicholas Bunnin and E. P. Tsui-James ( 2003, p. 529 ) . In order to reply those inquiries, assorted surveies could been conducted to seek findings on environmental moralss affairs sing relation on worlds, moral and responsibilities, civilization and nature, natural and societal contract, animate being public assistance. In other words, is the relation between homo and natural environment. As mentioned, planetary environmental moralss is still in its beginning. Much of the work that does be, unsurprisingly, extends the critical statements about anthropocentricity to the international sphere. Anthropocentricism abounds the universe over and, to the grade that it is responsible for harmful environmental patterns, it deserves unfavorable judgment. Wapner and Matthew ( 2009, p. 205 ) besides mentioned that the environmental moralss as a subject has focused on the manner humans treat the natural universe. It is by and large acknowledged that people care less about animate beings, rivers, workss, and mountains than they do about themselves and each other, and therefore it is no surprise that they exploit or otherwise abuse nature. Much environmental moralss attempts to calculate out why this is the instance and what can be done about it.Environmental ETHICS ISSUESThere are many environmental moralss issues occurred all over the universe. However, this survey will merely conc entrate on three sets of chief issues. The designated sets are as follows:First is the issue of natural resources.The 2nd issue will be discussed with sinks.The 3rd set of issue is the transmutation of landscapes and ecosystems.Issues of Natural ResourcesWorlds desire a quality environment, basking the comfortss of nature ; wildlife and wild flowers, scenic positions, topographic points of purdah every bit good as the trade goods such as lumber, H2O, dirt, natural resources. Supporting environmental wellness and a quality environment can surely be counted as responsibilities within a societal contract ( Nicholas Bunnin and E. P. Tsui-James, 2003 ) . Resource usage can easy overshoot the earth’s regenerative capacity. Since environmentalism’s early yearss, people have worried that we will run out of things we depend on, such as oil, fresh H2O, and minerals ( Ehrlich, 1975 ) . All natural resources are present infinite measures, and this includes the renewable ( organic ) every bit good as non-renewable. The difference is that while the non-renewable resources are finite in an absolute sense, the measure of organic resources is finite comparative to the population dependant upon it ( Antonsen, 1974, p. 180 ) .Energy.Energy became a universe issue and since future development. The chances of the supply and monetary value of natural energy particularly oil ignite the mentality for other types of primary energy every bit good in hereafter. Harmonizing to recent surveies, it is estimated yet proven universe militias of rough oil Ate sufficient to fulfill world’s demand to around twelvemonth 2020. In the other manus, natural gas besides had a great demand and became every bit of import as oil. The future monetary value of uranium supplies depends on the development of atomic power in general ( Ray, 1986, p. 56 ) . Food.Hunger is a deterioration job. Every state tries to cut down hungriness and poorness of their people therefore taking towards economic system prosperity. Shepherd ( 2012, p. 197 ) arose on the issue lies with the institutional agreements that dictate who gets what. As we are all concerned, nutrient is a trade good that is produced and sold for net income. Notwithstanding smallholder husbandmans, the huge bulk of planetary nutrient trade is controlled by corporations ( 3rd party ) whose primary aim is the coevals of net income.

Tuesday, October 22, 2019

Conjugate Definition in Chemistry

Conjugate Definition in Chemistry In chemistry, there are three possible definitions of the term conjugate. Three Types of Conjugates (1) A conjugate refers to a compound formed by the joining of two or more chemical compounds. (2) In the Bronsted-Lowry theory of acids and bases, the term conjugate refers to an acid and base that differ from each other by a proton. When an acid and base react, the acid forms its conjugate base while the base forms it conjugate acid: acid base ⇆ conjugate base conjugate acid For an acid HA, the equation is written: HA B ⇆ A- HB The reaction arrow points both left and right because the reaction at equilibrium occurs in both the forward direction to form products and the reverse direction to convert products back into reactants. The acid loses a proton to become its conjugate base A- as the base B accepts a proton to become its conjugate acid HB. (3) Conjugation is the overlap of p-orbitals across a ÏÆ' bond (sigma bond). In transition metals, d-orbitals may overlap. The orbitals have delocalized electrons when there are alternating single and multiple bonds in a molecule. Bonds alternate in a chain so long as each atom has an available p-orbital. Conjugation tends to lower the energy of the molecule and increase its stability.   Conjugation is common in conducting polymers, carbon nanotubules, graphene, and graphite. Its seen in many organic molecules. Among other applications, conjugated systems can form chromophores. Chromophores are molecules that can absorb certain wavelengths of light, leading them to be colored. Chromophores are found in dyes, the photoreceptors of the eye, and glow in the dark pigments.

Monday, October 21, 2019

The Meaning of Hitler essays

The Meaning of Hitler essays The Meaning of Hitler was written by a German journalist by the name of Sebastian Haffner. In this book, Sebastian Haffner probes the historical, political, and emotional forces that molded Adolf Hitlers character. Sebastian Haffner also examines closely Hitlers rise to power as Fhrer of Germany, as well as his great achievements. Adolf Hitler began by making a mess of his life. He dropped out of school at the age of 14, failed his entrance exam at the Vienna Academy of Arts twice, and spent the time from his eighteenth to his twenty-fifth year in Vienna and then in Munich doing nothing and aspiring to nothing. Then, in 1914 when World War I broke out, Hitler volunteered for the Bavarian army. Hitler was a good soldier and received a couple of awards for bravery but never ranked higher than corporal. In 1918, when Germany finally surrendered, Hitler was very upset. He believed that it was the Jews and the Communists who betrayed the "fatherland", and it was at this time that his hatred for the Jews most likely began. In 1919, Hitler joined a small radical Right-wing party, which called itself the "National Socialist German Workers Party", or Nazi party, where he soon became the leader. The party was small at first but Hitler's great skill at deliberating speeches attracted more and more listeners, and it soon became a major political party with many followers. Since the country was in chaos after World War I and was faced with the Great Depression, the Germans saw hope in Adolf Hitler. Unemployment was at about 40% and rising and people were starving and poor. In his speeches, Hitler blamed the Jews and Communists for their misfortunes. So why did so many Germans follow Hitler? When he took power, Germany and all of Europe was suffering from the Great Depression and were looking for answers and hope. Hitler was their answer. No factor contributed more to Hitlers success than the eco...

Sunday, October 20, 2019

Amoeba Anatomy, Digestion, and Reproduction

Amoeba Anatomy, Digestion, and Reproduction Amoebas are unicellular eukaryotic organisms classified in the Kingdom Protista. Amoebas are amorphous and appear as jelly-like blobs as they move about. These microscopic protozoa move by changing their shape, exhibiting a unique type of crawling motion that has come to be known as amoeboid movement. Amoebas make their homes in salt water and freshwater aquatic environments, wet soils, and some parasitic amoebas inhabit animals and humans. Key Takeaways: Amoebas An amoeba is an aquatic, single-celled protist characterized by a gelatinous body, amorphous shape, and amoeboid movement.Amoebas can form temporary extensions of their cytoplasm known as pseudopodia or false feet which can be used for locomotion or capturing food.Food acquisition is amoebas occurs by a type of endocytosis called phagocytosis. The food source (bacterium, algae, etc.) is engulfed whole, digested, and the waste expelled.Amoebas commonly reproduce by binary fission, a process in which the cell divides into two identical cells.Some species can cause disease in humans such as amebiasis, amoebic meningoencephalitis, and cornea infections of the eye. Classification Amoebas belong to the Domain Eukarya, Kingdom Protista, Phyllum Protozoa, Class Rhizopoda, Order Amoebida, and the Family Amoebidae. Amoeba Anatomy Amoebas are simple in form consisting of cytoplasm surrounded by a cell membrane. The outer portion of the cytoplasm (ectoplasm) is clear and gel-like, while the inner portion of the cytoplasm (endoplasm) is granular and contains organelles, such as a nuclei, mitochondria, and vacuoles. Some vacuoles digest food, while others expel excess water and waste from the cell through the plasma membrane. The most unique aspect of amoeba anatomy is the formation of temporary extensions of the cytoplasm known as pseudopodia. These false feet are used for locomotion, as well as to capture food (bacteria, algae, and other microscopic organisms). Pseudopodia may be broad or thread-like in appearance with many forming at one time or one large extension may form when needed. Amoebas dont have lungs or any other type of respiratory organ. Respiration occurs as dissolved oxygen in the water diffuses across the cell membrane. In turn, carbon dioxide is eliminated from the amoeba by diffusion across the membrane into the surrounding water. Water is also able to cross the amoeba plasma membrane by osmosis. Any excess accumulation of water is expelled by contractile vacuoles within the amoeba. Nutrient Acquisition and Digestion Amoebas obtain food by capturing their prey with their pseudopodia. The food is internalized through a type of endocytosis known as phagocytosis. In this process, the pseudopodia surround and engulf a bacterium or other food source. A food vacuole forms around the food particle as it is internalized by the amoeba. Organelles known as lysosomes fuse with the vacuole releasing digestive enzymes inside the vacuole. Nutrients are obtained as the enzymes digest the food inside the vacuole. Once the meal is complete, the food vacuole dissolves. Reproduction Amoebas reproduce by the asexual process of binary fission. In binary fission, a single cell divides forming two identical cells. This type of reproduction happens as a result of mitosis. In mitosis, replicated DNA and organelles are divided between two daughter cells. These cells are genetically identical. Some amoeba also reproduce by multiple fission. In multiple fission, the amoeba secretes a three-layered wall of cells that harden around its body. This layer, known as a cyst, protects the amoeba when conditions become harsh. Protected in the cyst, the nucleus divides several times. This nuclear division is followed by the division of the cytoplasm for the same number of times. The result of multiple fission is the production of several daughter cells that are released once conditions become favorable again and the cyst ruptures. In some cases, amoebas also reproduce by producing spores. Parasitic Amoebas Some amoeba are parasitic and cause serious illness and even death in humans. Entamoeba histolytica cause amebiasis, a condition resulting in diarrhea and stomach pain. These microbes also cause amebic dysentery, a severe form of amebiasis. Entamoeba histolytica travel through the digestive system and inhabit the large intestines. In rare cases, they can enter the bloodstream and infect the liver or brain. Another type of amoeba, Naegleria fowleri, causes the brain disease amoebic meningoencephalitis. Also known as brain-eating amoeba, these organisms typically inhabit warm lakes, ponds, soil, and untreated pools. If N. fowleri enter the body though the nose, they can travel to the frontal lobe of the brain and cause a serious infection. The microbes feed on brain matter by releasing enzymes that dissolve brain tissue. N. fowleri infection in humans is rare but most often fatal. Acanthamoeba cause the disease Acanthamoeba keratitis. This disease results from an infection of the cornea of the eye. Acanthamoeba keratitis can cause eye pain, vision problems, and may result in blindness if left untreated. Individuals who wear contact lenses most often experience this type of infection. Contact lenses can become contaminated with Acanthamoeba if they are not properly disinfected and stored, or if worn while showering or swimming. To reduce the risk of developing Acanthamoeba keratitis, the CDC recommends that you properly wash and dry your hands before handling contact lenses, clean or replace lenses when needed, and store lenses in a sterile solution. Sources: Acanthamoeba Keratitis FAQs Centers for Disease Control and Prevention, 6 June 2017, www.cdc.gov/parasites/acanthamoeba/gen_info/acanthamoeba_keratitis.html.Naegleria fowleri - Primary Amebic Meningoencephalitis (PAM) - Amebic Encephalitis. Centers for Disease Control and Prevention, 28 Feb. 2017, www.cdc.gov/parasites/naegleria/.Patterson, David J. â€Å"Tree of Life Amoebae: Protists Which Move and Feed Using Pseudopodia.† Tree of Life Web Project, tolweb.org/accessory/Amoebae?acc_id51.

Saturday, October 19, 2019

Nursing research Essay Example | Topics and Well Written Essays - 250 words - 11

Nursing research - Essay Example In addition, it can also be determined by whether it has measured what it is intended to measure in this case the measure being the face value of data, the content validity of the data, and  by  a panel of judges. In this case, the judges use their opinion to determine whether the tool measured its conceived measure (Wood & Ross-Kerr, 2010). On the other hand, the validity of an instrument can also be determined using pragmatic measures that test the practical value of an instrument while focusing on the research questions. With constant determination of a tool or instrument as valid, there is no need for a researcher to test the reliability of an instrument. Nonetheless, there are three ways to determine the testing of the reliability of an instrument. First, reliability can be determined through testing the stability of the tools by producing dependable results overtime. On the other hand, the second approach involves the test for equivalency. A test for equivalency involves te sting whether the instrument was consistent while used by independent researchers. Finally, the test for reliability may involve testing the internal consistency of a tool by determining whether the measure of the consistency of the tool is in all parts (Wood & Ross-Kerr,