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College students, particularly ethnic minorities in the US, are at a high risk for obesity and health complications. This study determines the type of foods that African-American college students are choosing to eat, and what factors influence those choices. Findings show that fresh fruits, whole grain bread, grilled chicken, and salad top the list of food choices. Knowledge of nutrition labels, gender, weight management, and eating facilities are among the factors found to influence these choices. Managerial implication of findings for the foodservice industry, and other interest groups are discussed. Directions for future research are given. 相似文献
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Maryam Dilmaghani 《Review of social economy》2017,75(1):49-75
Using the latest wave of the Canadian Ethnic Diversity Survey, I investigate whether religious identity and religious intensity associate with the degree to which people trust others, controlling for a wide range of characteristics. The analysis shows that Canadian Roman Catholics are appreciably less trusting than mainline Protestants, and religious nones are situated in between these two groups. With regard to religious intensity, I find that higher commitment negatively correlates with trust in unknown others for Roman Catholics. The reverse is true for Protestants. Results also show stark cross-denominational variations within Protestantism, as two highly committed denominations of Mennonite and Pentecostal are found to be the most and the least trusting religious groups in Canada. No non-Christian religious minority is found statistically significantly less trusting than Canadian Roman Catholics. Considering particularized trust in one’s neighbours and co-workers yields comparable conclusions. 相似文献
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D‐optimal designs for a continuous predictor in longitudinal trials with discrete‐time survival endpoints
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In designing an experiment with one single, continuous predictor, the questions are composed of what is the optimal number of the predictor's values, what are these values, and how many subjects should be assigned to each of these values. In this study, locally D‐optimal designs for such experiments with discrete‐time event occurrence data are studied by using a sequential construction algorithm. Using the Weibull survival function for modeling the underlying time to event function, it is shown that the optimal designs for a linear effect of the predictor have two points that coincide with the design region's boundaries, but the design weights highly depend on the predictor effect size and its direction, the survival pattern, and the number of time points. For a quadratic effect of the predictor, three or four design points are needed. 相似文献
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Maryam Charkhchian Seyyed Abdolhadi Daneshpour 《Review of urban and regional development studies : RURDS : journal of the Applied Regional Conference》2009,21(1):14-36
A place is generally identified by its varying physical, activity, social and meaning (connotative) characteristics. In this paper, the "Model of Responsive Public Space" is defined by these four aspects and each of them has its own special indicators as shown in previous studies on this subject. To examine this model and evaluate the interactions between these dimensions, experimental studies were carried out in two stages. In the first stage, open-ended structured interviews were carried out with 70 participants to adjust the model with personal opinions about public spaces in Qazvin city, Iran. In the second stage a questionnaire was used to explore the effect of the four dimensions on each other. 598 users of a selected public space participated in this study. The results were analyzed by SPSS software applying a Pearson correlation test and Excel software. These results indicate that not only in theory but also in practice, public spaces have four distinct aspects that must be taken into consideration when creating a responsive public space. The most significance correlation is that between the meaning and the social dimension of public spaces. 相似文献
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Amini Farsani Mohammad Babaii Esmat Beikmohammadi Maryam Babaii Farsani Meysam 《Quality and Quantity》2022,56(5):3337-3362
Quality & Quantity - Since the 2010s, the appeal for utilizing mixed methods research in applied linguistics and its related strands has been expanding. However, recent text-based studies... 相似文献
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Ali Irannezhad Ajirlou Maryam Esmalifalak Sahar Pordeli Behrouz Farid Soltanalizadeh 《Journal of Behavioral Finance》2019,20(2):239-254
The authors show that a simple mood-separable preference in a network study of stock returns captures a variety of stylized facts regarding stocks’ provisional (ab)normal behavior. These behaviors are articulated in a multistate complete Euclidean network model that specifies the existence, direction, and magnitude of a self-organized dynamics for each individual stock during abnormal market moods. In the empirical setting, the authors apply suggested model along with 2 established visual approaches (multidimensional scaling and agglomerative hierarchical clustering) for benchmark purposes. Results reveal different levels of erratic return dynamics for each stock and the entire market in different abnormal market moods. The authors model and interpret these self-organized dynamics as evidence of stocks’ and market’s bipolar behavior. 相似文献
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In longitudinal trials, the number of accrual groups and their sizes should carefully be chosen to ensure a desired power to detect a specified treatment effect. Methods are proposed to obtain a cost‐effective combination of the number and size of accrual groups that provides high efficiency at minimal cost. We focus on trials where an event occurs at any point in time, but it is recorded on a discrete scale. The Weibull survival function is considered for modeling the underlying time to event. By using a cost function, it is shown that the ratio of the cost of recruiting and treating subjects to the cost of measuring them and also the survival pattern highly influence the optimal combination of the number and size of accrual groups. A maximin approach is further presented to obtain robust designs with respect to poor specification of these modeling parameters. We also show the application of the proposed optimal design methodology using real examples. 相似文献