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31 articles for “Persistence”
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Research ArticleOpen accessIn the abstractBifurcation and Stability Analysis of a Food Web in a ChemostatS.M. Sohel RanaIn this study, a classical model describing a food web in a chemostat involving three species competing for non-reproducing, growth rate-limiting nutrient in which one of the competitors predates on one of the other competitors is considered. Quantitative analyses of non-negativity and boundedness of solution trajectories, dissipativity, behavior around equilibria, global stability and persistence of the model equations are analyzed. … …Journal of Mathematics and Statistics, Vol. 12, Issue 4 · 22 Oct 2016 · 7,081 accessesView PDFCite
Research ArticleOpen accessIn the abstractTHE TEMPORAL DYNAMICS OF REGIONAL CITY SIZE DISTRIBUTION: ANDHRA PRADESH (1951-2001)G. Kumar, A. SubbarayanSystems with measurable entities are characterized by certain properties of their size distribution. City Size Distribution (CSD) and the underlying city size dynamics have received attention in the urban economic literature in recent years. In this approach we aim at evaluating the temporal dynamics of city size distribution in Andhra Pradesh, an Indian state for the period 1951-2001. The research … …Journal of Mathematics and Statistics, Vol. 10, Issue 2 · 14 Apr 2014 · 6,815 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Self-Medication Among Pharmacy StudentsRiham Waisi, Laila Mouslli, Osama Hussein Mohamed Ibrahim, Suleiman Ibrahim SharifTo determine the incidence of self-medication among Sharjah university students and the impact of medical knowledge on such practice. A pre-validated questionnaire was distributed to 200 pharmacy students during May, 2012. Data were analyzed using SPSS and results expressed as counts and percentages. The overall response rate was 85% with 98% of respondents being Arabs. Females comprised about 91% of … …American Journal of Pharmacology and Toxicology, Vol. 7, Issue 4 · 15 Dec 2012 · 10,376 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Study on the Behavior of Volatility in Saudi Arabia Stock Market Using Symmetric and Asymmetric GARCH ModelsAjab Al Freedi, Ahmed Shamiri, Zaidi IsaProblem statement: This study examines several stylized facts (heavy-tailedness, leverage effect and persistence) in volatility of stock price returns exploiting symmetric and asymmetric GARCH family models for Saudi Arabia. Approach: This study is carried out using closing stock market prices over 15 years covering the period 1 January 1994 to 31 March 2009. The sample period is divided into three … …Journal of Mathematics and Statistics, Vol. 8, Issue 1 · 7 Feb 2012 · 7,577 accessesView PDFCite
Research ArticleOpen accessIn the abstractDeveloping Learner Centered Action Learning ModelChalard ChantarasombatProblem statement: This study aimed to examine the effects of using Learner Centered Action Learning Model. The research was research and development by applying Participatory Action Research method. Instruments used were an achievement test, a questionnaire on students’ satisfaction and focused group discussion. Approach: The statistic included the Mean, Standard Deviation, effectiveness index and Dependent Sample t-test. The results revealed … …Journal of Social Sciences, Vol. 7, Issue 4 · 21 Oct 2011 · 7,921 accessesView PDFCite
Research ArticleOpen accessIn the abstractUnique Characteristic Features of Mycobacterium Tuberculosis in Relation to Immune SystemRajni, Laxman S. MeenaProblem statement: Tuberculosis is a leading global mortality factor which has not been effectively controlled, with 1.7 million deaths per year and 8.9 million new cases. Aerobic microbe Mycobacterium Tuberculosis H37Rv (MTB) is the causative agent of tuberculosis. Approach: It is unique among prokaryotes due to its exceptional features contributing to its survival within the hostile environment of macrophages. Results: … …American Journal of Immunology, Vol. 7, Issue 1 · 16 Aug 2011 · 17,211 accessesView PDFCite
Research ArticleOpen accessIn the abstractMeasuring Predictors of Student Retention RatesAllen L. Webster, Vince E. ShowersProblem statement: Colleges and universities place more emphasis on student retention rates than ever before. Educational institutions are intensifying efforts to discourage student departure and preserve their established student base. Economic pressures that bear heavily on academic administration make such efforts highly critical for institutional success. Research on this vital issue is especially important due to the vigorous competition among … …American Journal of Economics and Business Administration, Vol. 3, Issue 2 · 7 Apr 2011 · 7,254 accessesView PDFCite
Research ArticleOpen accessIn the abstractDiversification and Performance of Group-Affiliated Firms during Institutional Transitions: The Case of the Chinese Textile IndustryQiang ZhangProblem statement: Business groups play significant roles and evolve with the changing institutional environments in many emerging Asian economies. A study of how the institutional transition and the resultant ‘institutionally rooted evolution’ of business groups affect the diversification outcomes of affiliated firms will therefore help to deepen our understanding of this unique organizational form. Approach: This study uses the 2001-2005 … …American Journal of Economics and Business Administration, Vol. 3, Issue 2 · 7 Apr 2011 · 7,424 accessesView PDFCite
Research ArticleOpen accessIn the abstractEfficacy of Some Commercial Chemical Disinfectants on Salmonella enterica Serovar TyphimuriumEssam S. Soliman, E. G. Taha, M. A.A. Sobieh, P. G. ReddyProblem statement: Poultry industry is intensive and consistently applies an all-in, all-out system with the aim of minimizing infection pressure and targeting specific pathogens like Salmonella which remains one of the leading causes of food-borne illness, many questions regarding the introduction and persistence in animal production still remain. Therefore disinfection during production break is a routine part of the biosecurity … …American Journal of Animal and Veterinary Sciences, Vol. 4, Issue 3 · 30 Sep 2009 · 7,391 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Fate of Non-Volatile Organic Chemicals in The Agricultural EnvironmentMohammad A. Batiha, Abdul Amir H. Kadhum, Zahedi Fisal et al.Multimedia dynamic model of the fate of non-volatile organic chemicals (NVOC) in the agricultural environment is described. The modeled environment, consisting of up to three major surfaces environmental compartments, includes air, agricultural soil, and surface water. This model is based on the aquivalence approach suggested by Mackay and co-workers in 1989. As the movement of chemicals in the environment is … …American Journal of Applied Sciences, Vol. 4, Issue 7 · 31 Jul 2007 · 7,043 accessesView PDFCite