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61.
The Effects of Ethnic Minority Adolescents' Ethnic Self‐Identification on Friendship Selection 下载免费PDF全文
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
62.
Research report: a software solution for rapid policy assessment with reimbursed SMS and mobile cash
Sebastian Schutte Roos Haer 《International Journal of Social Research Methodology》2018,21(6):685-694
In this report, we introduce a system for running reimbursed surveys via text messages and mobile cash. The key advantage of this approach is the ability to conduct rapid surveys at an extremely low cost. After reviewing existing literature, we describe an automated system for conducting such surveys and demonstrate its merits in a proof-of-principle application in India. We obtain substantive insights on the effectiveness of a policy trial that are in line with expert assessments. This application suggests that our approach can be applied to a wide range of problems including impact assessment for policy or developmental aid, and monitoring of public sentiment, and possibly monitoring of conflict dynamics. 相似文献
63.
Indirect processes are increasingly contributing to the total cost of production in highly competitive and technology-intensive industries. Unfortunately, they are less assessable than direct processes due to the complex organisational management structure. Therefore, companies seeking to make improvements in indirect areas need decision support methods to indicate which indirect process needs to be improved and to what extent. To facilitate this task, the target setting for indirect processes (TSIP) method has been developed following the constructive research approach. TSIP is a combination of process modelling, the analytic network process, activity-based management from managerial accounting research and the value control chart from target costing research in a kaizen budgeting framework. This new hybrid method is developed and validated in cooperation with a global first-tier automotive supplier. 相似文献
64.
65.
Small-world studies were introduced by Milgram and others in the 1960s and 1970s. These studies, and a majority of variants conducted by others, display a number of methodological weaknesses that bias their results. While no explicit methodological standard exists for these studies, here I derive a number of best-practice criteria for small-world studies by pointing out mistakes of previous studies, and by applying methodological standards from other empirical research areas. Improving the methodology of letter referral studies is important, because such studies could still be useful in a number of contexts today, especially for the exploration of factors affecting targeted search processes. 相似文献
66.
The paper extends existing work on inequality and economic development by estimating a cross-country structural model that identifies bi-directional relationships between income inequality and other indicators of social and economic development. Overall, lower inequality is associated with improvements in other development indicators, but this is the result of several complex interactions. The most striking feature of the structural model is the insight it provides into the reasons behind the negative ‘Africa dummy’ in previous cross-country growth studies. 相似文献
67.
Exact cooperative games or non-additive measures, coherent lower previsions and coherent risk measures are mathematically
essentially the same. They are belong to the class of exact functionals on an arbitrary set of bounded functions. We investigate
the exact functionals from a functional analytic point of view, i. e. we characterize this class by a norm, present a Hahn-Banach
type theorem, provide a powerful construction method and adopt the concept of the core resp. σ-core from cooperative game
theory.
Received: December 2000; revised version: May 2001 相似文献
68.
Wolfgang Dauth Sebastian Findeisen Jens Suedekum 《Journal of the European Economic Association》2014,12(6):1643-1675
We analyze the effects of the unprecedented rise in trade between Germany and “the East” (China and Eastern Europe) in the period 1988–2008 on German local labor markets. Using detailed administrative data, we exploit the cross‐regional variation in initial industry structures and use trade flows of other high‐income countries as instruments for regional import and export exposure. We find that the rise of the East in the world economy caused substantial job losses in German regions specialized in import‐competing industries, both in manufacturing and beyond. Regions specialized in export‐oriented industries, however, experienced even stronger employment gains and lower unemployment. In the aggregate, we estimate that this trade integration has caused some 442,000 additional jobs in the economy and contributed to retaining the manufacturing sector in Germany. This is almost exclusively driven by the rise of Eastern Europe, not by China. We also conduct an analysis at the individual worker level, and find that trade had a stabilizing overall effect on employment relationships. 相似文献
69.
Sebastian Bock 《Innovation: The European Journal of Social Science Research》2014,27(4):379-397
This article argues that expertise must be seen as politicized. Most of the existing research on the role of experts in policy-making neglects that there are many political factors which influence what and whose expertise is sought and used. This article looks at the role consultants play in shaping public policy in developing countries. Applying concepts from different disciplines a theoretical framework is developed to examine in what ways such politicized expertise undermines notions of neutrality and legitimacy. This framework is then applied to a case study looking at the advice that McKinsey & Company has given developing countries on their deforestation and Reducing Emissions from Deforestation and Forest Degradation policies. 相似文献
70.
Modern cars offer drivers support with the help of a number of driver assistance systems. Those systems aim to relieve drivers through assumption of sub parts of the driving task (e.g. in case of an Adaptive Cruise Control by regulation of vehicle speed and time gap to preceding vehicle). Today, systems are controlled and monitored separately which leads to efforts to combine the functionality of all systems in an overlying assistance for drivers. The approach of the University of Technology Darmstadt is called Conduct-by-Wire and can be seen as a cooperative maneuver-based driving paradigm, where the driver gives maneuver command to the systems which are automatically executed. This paper summarizes the results of three studies which investigated the user acceptance of this driving paradigm. Overall, it can be said that the acceptance of the system depends on personal traits of the driver and on the driving situation. Almost all participants are willing to use Conduct-by- Wire for routine tasks such as commuting, which makes the systems interesting for company cars. Still, there remain a number of drivers who are not willing to use such a highly automated system at all. 相似文献