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Immigration flows and social inequalities reflect increased social and multi-ethnic segregation in contemporary urban Europe. For a better understanding of these processes, the present study investigates the main strengths of the multi-group residential indices, testing sensitivity and reliability under different metropolitan contexts in five European countries. These indices focus on different research dimensions and approach multi-group residential segregation conceptually and mathematically in a different way. A multivariate exploratory data analysis was adopted to classify the observed segregation patterns into a few homogeneous types and to delineate the multivariate relationship between the indices. The results of principal component analysis demonstrate that the indices assessing uniformity and disproportionality of the social groups analysed (H and D) contribute largely to the diversification in today's multi-ethnic communities, clarifying the importance of the dimension of evenness. Our results highlight how segregation is more evident in economically disadvantaged metropolitan regions with high levels of social vulnerability.  相似文献   
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SCOAP3 is an innovative Open Access initiative for publishing in high-energy physics. The model is viewed by many as a potential solution to multiple issues related to the financial crisis, the peer review system, scholarly communication, and the need to support institutional repositories. This installment of “The Balance Point” presents articles written by three Open Access advocates, outlining the SCOAP3 proposal, benefits of participation, and some of the roles libraries, publishers and scientists can play in making important changes to scholarly communication. Contributors discuss scalability and transferability issues of SCOAP3, as well as other matters of concern.  相似文献   
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The Journal of Economic Inequality - We investigate the short-term effects of COVID-19 on labor market flows and how they are mediated by labor market policy. Using Italian administrative data on a...  相似文献   
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Abstract

This study uses contract theory to analyse the relationship between open collaborative innovation strategies and digital platforms. We argue that a collaborative mechanism and governance of the platform affect how operations are run and impact firm ambidexterity. We also explain how the twofold revealing strategy, both selective and free occurs via the platform and how governance positively impacts the coordination mechanism. A case study analysis on TIM OPEN draws a ground-breaking framework for future investigations. The analysis suggests that the combination of digital platform and collaborative innovation can facilitate the creative process and be a driver of operational synergies. Results confirm that the adoption of digital platforms for collaborative innovations reduces transaction costs.  相似文献   
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This is the first of two papers where we present a formal model of unawareness. We contrast unawareness with certainty and uncertainty. A subject is certain of something when he knows that thing; he is uncertain when he does not know it, but he knows he does not: he is consciously uncertain. On the other hand, he isunaware of something when he does not know it, and he does not know he does not know, and so on ad infinitum: he does not perceive, does not have in mind, the object of knowledge. The opposite of unawareness is awareness, which includes certainty and uncertainty.This paper has three main purposes. First, we formalize the concept of awareness, and introduce a symmetry axiom which states that a subject can be aware of something, say, if and only if he is aware of its negation not-; in other words, that and not- are perceived together, or neither is. We then derive the basic properties of awareness.The second purpose is to prove a different axiomatic characterization, based on the concept of awareness of the system which underlies the model of information with partitional structures (known asS5).The third purpose of this paper is to show that without a substantial weakening of the rules of inferences normally assumed in modal logic a satisfactory model of unawareness, which includes the symmetry axiom, is impossible. This alternative approach is developed in a second paper by the same authors.  相似文献   
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This study examined the relation of self‐efficacy to length and type of training in a sample of Italian career counselors. Findings indicated that amount of career counseling training was positively related to counselors' self‐efficacy regarding their abilities to conceptualize vocational problems, deal with career indecision concerns, and provide educational counseling. In addition, counselors who had participated in an in‐service training course that focused on social cognitive/learning theories reported stronger self‐efficacy regarding their skills at vocational problem conceptualization and at educational counseling than did those who received more eclectic training.  相似文献   
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