排序方式: 共有98条查询结果,搜索用时 859 毫秒
31.
The Effects of Ethnic Minority Adolescents' Ethnic Self‐Identification on Friendship Selection
下载免费PDF全文
![点击此处可从《Journal of research on adolescence》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Philipp Jugert Lars Leszczensky Sebastian Pink 《Journal of research on adolescence》2018,28(2):379-395
This study investigated the effects of ethnic minority adolescents' ethnic self‐identification (host country, dual, or heritage country) on friendship choices among ethnic majority and minority peers. Hypotheses were derived from similarity–attraction and social identity theory and tested using longitudinal social network data from 1,004 middle school students (five schools) in Germany. Results showed that ethnic minority adolescents' ethnic self‐identification affected friendship selection beyond ethnic homophily. While host country and dual identification was beneficial with respect to friendships with both ethnic majority and minority peers, heritage country identification was detrimental to relations with both of them. 相似文献
32.
Dr. phil. Philipp Wascher Thomas J?ger 《Organisationsberatung, Supervision, Coaching》2011,18(2):195-209
The authors present a case study of a coaching process in an enterprise of handicraft. In human resource management, coaching supports communication in the workplace and thus enhances workplace satisfaction. Moreover, coaching has been proven to positively reinforce employer branding (corporate culture, work quality, job satisfaction, ??psychological contracts??, etc.) and increases the general attractiveness of the employer: ??We offer staff development and coaching, we take our employees and management staff seriously.?? 相似文献
33.
34.
35.
Philipp M. Lersch 《Demography》2017,54(3):961-983
This study examines the association between marriage and economic wealth of women and men. Going beyond previous research that focused on household wealth, I examine personal wealth, which allows identifying gender disparities in the association between marriage and wealth. Using unique data from the German Socio-Economic Panel Study (2002, 2007, and 2012), I apply random-effects and fixed-effects regression models to test my expectations. I find that both women and men experience substantial marriage wealth premiums not only in household wealth but also in personal wealth. However, I do not find consistent evidence for gender disparities in these general marriage premiums. Additional analyses indicate, however, that women’s marriage premiums are substantially lower than men’s premiums in older cohorts and when only nonhousing wealth is considered. Overall, this study provides new evidence that women and men gain unequally in their wealth attainment through marriage. 相似文献
36.
R. Vijay Krishna Philipp Sadowski 《Econometrica : journal of the Econometric Society》2014,82(2):655-703
We consider a decision maker who faces dynamic decision situations that involve intertemporal trade‐offs, as in consumption–savings problems, and who experiences taste shocks that are transient contingent on the state of the world. We axiomatize a recursive representation of choice over state contingent infinite horizon consumption problems, where uncertainty about consumption utilities depends on the observable state and the state follows a subjective Markov process. The parameters of the representation are the subjective process that governs the evolution of beliefs over consumption utilities and the discount factor; they are uniquely identified from behavior. We characterize a natural notion of greater preference for flexibility in terms of a dilation of beliefs. An important special case of our representation is a recursive version of the Anscombe–Aumann model with parameters that include a subjective Markov process over states and state‐dependent utilities, all of which are uniquely identified. 相似文献
37.
Philipp Aerni 《Risk analysis》2002,22(6):1123-1137
Public perceptions and political debates regarding the risks and benefits of agricultural biotechnology are well documented in industrialized countries. Yet, hardly any surveys have been conducted in developing countries. The following study aims to contribute to a better understanding of stakeholder attitudes toward agricultural biotechnology in developing countries. For this purpose, stakeholder representatives in the public debates in Mexico and the Philippines were asked to complete two nearly identical questionnaires on the risks and benefits of agricultural biotechnology. A comparison of stakeholder attitudes in the Philippines and Mexico is interesting because it shows how the different political systems, cultural and ecological backgrounds, and the regional context of food and agriculture influence perceptions. In general, the results of the surveys indicate that the participants in both countries consider genetic engineering to be an important tool to address agricultural, nutritional, and environmental problems, and they do not regard transgenic foods as risky for consumers. However, they are concerned about the potential impact of such transgenic crops on their countries' rich biological diversity and do not believe that national biosafety guidelines will be implemented properly. Although the surveys show that stakeholder attitudes in the Philippines and Mexico are quite similar, they also highlight significant differences in perception often related to cultural and political aspects. 相似文献
38.
39.
40.
Wilhelm Bloch Eva Zopf Philipp Zimmer Freerk T. Baumann 《European review of aging and physical activity》2013,10(1):25-32
A growing knowledge regarding the influence of exercise on adverse physiologic outcomes associated with cancer and its treatment exists. Aside from its effects on psychological behavior, quality of life, and cancer-related fatigue, physical exercise can target physical and cardio-respiratory fitness, insulin regulation and metabolic syndrome, body weight and composition, and immune function in tumor patients. The increasing number of study results for different cancer types, which prove the positive influences of physical activity in cancer patients, changed the contradictory opinions which existed until the end of the last century. Although an increasing number of studies showing the positive effects of physical activity and more specifically of endurance and resistance training in cancer patients have been published, the underlying mechanisms are mostly unknown. Thus, we summarized the current knowledge of the effects of physical activity and specific training in different tumor entities with specific respect to the possible underlying mechanisms. Especially, the association between physical activity and (1) the improvement of fatigue and the role of free radicals in this process, (2) the counterbalance of tumor-induced cachexia, (3) the improvement of the immune system for supportive tumor treatment, and (4) the possible role of epigenetic modulation against tumor and tumor treatment-dependent adverse physiologic outcomes is focused. 相似文献