Georgia College & State University

About: Georgia College & State University is a education organization based out in Milledgeville, Georgia, United States. It is known for research contribution in the topics: Population & Context (language use). The organization has 950 authors who have published 1591 publications receiving 37027 citations.

The Ethical Intention and Prediction Matrix: Reducing Perceptual and Cognitive Biases for Learning

Abstract: Perceptual and cognitive biases are significant factors influencing ethical judgment, conduct, and learning. These biases inhibit the quality of students’ personal engagement, inquiry, and learning on cases and exercises assigned in business ethics courses. The purpose of this article is to describe certain common biases involved in the perception and interpretation of ethical dilemmas and to introduce a survey-feedback tool that can help students recognize and reduce some of these biases for ethical decision making.

Online promotion and marketing of mobile communication devices: an empirical study

Abstract: The competition for mobile phone market has been dramatically increased recently. The quality of website designs from mobile phone producers is important in terms of market competition. This paper is an attempt to identify major issues and challenges in utilising companies| websites in promoting and marketing their mobile phone products and services. Data were collected through a comprehensive online observation. Fuzzy Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) was employed to evaluate the current online promotion implemented by major mobile phone manufacturers in China. The recommendations and suggestions for future research are also discussed.

Relationship of diabetes with cardiovascular disease-related hospitalization rates, length of stay, and charges: analysis by race/ethnicity, age, and sex.

Abstract: OBJECTIVE Determine relationship of diabetes with risk of cardiovascular disease hospitalizations and the effect on hospital length of stay and charges. DESIGN A cross-sectional analysis of Georgia hospital discharge data for 1998 through 2001. PATIENTS Patients hospitalized principally with one of six cardiovascular disease (CVD) conditions (myocardial infarction, ischemic heart disease, cardiac dysrhythmia, heart failure, cerebrovascular events, peripheral vascular disease) were identified in the hospital discharge data. MAIN OUTCOME MEASURES Aggregated CVD-related hospitalization rates, length of stay, and charges were compared by presence of diabetes. Analyses were adjusted for age, sex, and race/ethnicity. RESULTS A total of 3,900,337 discharges were recorded between 1998 to 2001. Of these, 468,957 discharges (12%) had one of the six selected CVD diagnoses (average age 67 years, average length of stay 4.7 days, average total charge $15,702, 48% women, 76% non-Hispanic Whites, 22% non-Hispanic Blacks, and 1% Hispanics). Diabetes was a concurrent diagnosis in 30% of these CVD-related discharges. CVD hospitalization rates were significantly higher and length of stay and total charges were significantly greater among non-Hispanic Whites and Blacks-but not in Hispanics-with diabetes compared to persons without diabetes. Diabetes had a similar effect on CVD hospitalizations among men and women, but the effect of diabetes was lessened with increasing age. CONCLUSION These data suggests that aggressive outpatient modification of metabolic abnormalities in diabetes patients should be attempted to decrease risk of CVD-related hospitalization and lower the economic impact of these combined conditions.

Complex oscillatory patterns near singular Hopf bifurcation in a two time-scale ecosystem

Abstract: We consider an ecological model consisting of two species of predators competing for their common prey with explicit interference competition. With a proper rescaling, the model is portrayed as a singularly perturbed system with one-fast (prey dynamics) and two-slow variables (dynamics of the predators). The model exhibits variety of rich and interesting dynamics, including, but not limited to mixed mode oscillations (MMOs), featuring concatenation of small and large amplitude oscillations, relaxation oscillations and bistability between a semi-trivial equilibrium state and a coexistence oscillatory state. Existence of co-dimenison two bifurcations such as fold-Hopf and generalized Hopf bifurcations make the system further intriguing. More interestingly, in a neighborhood of {\emph{singular Hopf}} bifurcation, long lasting transient dynamics in form of chaotic MMOs or relaxation oscillations are observed as the system approaches the periodic attractor born out of supercritical Hopf bifurcation or a semi-trivial equilibrium state respectively. The transient dynamics could persist for hundreds or thousands of generations before the ecosystem experiences a regime shift. The time series of population cycles with different types of irregular oscillations arising in this model stem from a biological realistic feature, namely, by the variation in the intraspecific competition amongst the predators. To explain these oscillations, we use bifurcation analysis and methods from {\emph{geometric singular perturbation theory}}.