The strategy of prognostic landscape–ecological studies on climatogenic changes in the biological cycle and carbon balance in forest ecosystems as leading factors of the biotic regulation of the environment is presented. Methods are described for constructing analytical and cartographic empirical statistical models that make it possible to reveal the local mechanisms of biotic regulation and identify the zonal/regional types of forest formations capable of stabilizing the continental biosphere in the changing climate. The prognosis of changes of biotic regulation of the carbon cycle according to the scenarios of forthcoming greenhouse warming and cooling by global HadCM3 and E GISS models accordingly are described.
In this research study, first semester GPAs were analyzed as a function of dual credit enrollment for a community college district in an urbanized area of southeast Texas. Dual credit enrollment and student GPAs were analyzed separately for Asian, White, Hispanic, and Black students. Inferential statistical analyses revealed that, with the exception of Asian students, White, Hispanic, and Black students who had been enrolled in dual credit courses had statistically significantly higher first semester GPAs compared to their ethnic/racial counterparts who had not been enrolled in dual credit courses. Hispanic students who participated in dual credit statistically had a first semester GPA that was 0.52 points higher than Hispanic students who had not participated in dual credit, a moderate effect size. Results of findings and implications for future research are provided.
This survey of the level of awareness of the causes, transmission and consequences of Ebola and its implications for education in Nigeria was carried out on 70 stratified and randomly selected respondents within Ankpa metropolis of Kogi state. A locally developed and standardized instrument: Level of Awareness of Ebola Virus Disease Questionnaire (LAEVDQ) with r = 0.51 was employed to collect relevant data from the respondents. Two hypotheses were postulated to ascertain the level of awareness of EVD across the variables of gender and literacy. Data collected was analysed through frequency counts, percentages and chi-square test at 0.05alpha level. Although, the result of the study showed no significant differences in levels of awareness across the variables of gender and literacy, descriptive statistical analysis indicated a generally low level of awareness of the respondents about EVD. On this basis, it was recommended that a multi-sectorial programmes of mass sensitization, training and retraining of health practitioners, provision of more infrastructures both basic to promote good hygiene in all educational institutions as well as the inclusion of EVD in the curricular offering at all levels of education in Nigeria.
The objective of this paper is to investigate a Regular Perturbation dynamic system of the type, non- autonomous type of an ordinary differential equations of the form; x′ = f(x) + εg(x,t,ε), and to establish the sufficient and necessary conditions for the differences between the dynamics for which ε = 0 and ε > 0, and also establish x* as a stable equilibrium point of the unperturbed autonomous system of x′ = f(x) The paper further establish, that the above given equation, admit a stable T- Periodic orbit in a neighborhood of x*. Some properties of the Hamiltonian system, which form important source of the differential equations given above provided the motivation for the study. Proposition 1.1, Example 2.1, 2.2, 4.1, Theorem3.1 corollary3.1and Theorem 3.2 gives the results that established the objective for the study. My approach in this study has advantage over (3) and the results obtained in this study generalize the results in (3) in the case where four arguments were proved.
Context: Improving manufacturing and attaining manufacturing excellence to gain competitive advantage has attracted a lot of attention in the last few years. Vehicle Assembly Line balancing being the most complex Assembly line, has been active area of research over years and has attracted many researchers.
Objective: This paper systematically identifies and unfolds the important parameters by systematic review. Goal of this Review is to develop a novel classification of literature on Vehicle Assembly Line Optimization supported by recent publications since 2009.
Methodology: Total of 151 papers were identified, out of which 124 referred journal articles are reviewed here. Data is sourced from 40 publications, majority of which includes Elsevier, IEEE, and Springer.
Results: Analysis of research on Assembly Line Balancing and optimization within many different industrial scenarios has been done her. This paper contributes to existing domain by classifying and comparing the means for input data, constraints and methodology used. It has been classified into five heads.
Conclusion: The literature has been reviewed with an objective to identify the gap between theory and practice and suggest future research directions in the area of Vehicle Assembly Line Optimization. To the best of our knowledge, this is the first systematic detailed review in this area.