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Vertical specialization generated by the international fragmentation of production within global networks is driven not only by comparative advantage, but also by the locational decisions of lead firms which determine the role and bargaining power of local producers in their value chain. This study examines the consequences of such specialization in textiles and clothing for 26 labour‐abundant countries from 1990 to 2007. Fixed effects regressions based on panel data reveal that the industry does not always reap the benefits of the resulting international trade integration. Rather, the authors observe a negative relationship between vertical specialization and relative real wages in the textile and clothing industry.  相似文献   
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This paper reports on some of the core findings from a program of research focused on examining the structure of public relations/communication departments. It draws on a recent major global study that was sponsored by the former Research Foundation of the International Association of Business Communicators (IABC). Analyzing the results from interviews with 26 Chief Communication Officers (CCOs) located in each of the five continents and from a survey sample of some 278 CCOs based in organizations headquartered across the globe, the study found quite notable variations in the type of departmental structures. No one dominant structural model emerged. In effect, each organization appeared to adopt a structural design to suit their individual circumstances, although there were nevertheless some reasonably common component functional elements within each department. CCOs identified those variables that they believed most influenced the design of the public relations department structure. While recognizing department structure is situation dependent, the evidence suggests that CCOs create hybrid structures unique to the circumstances. What was perhaps most surprising was that department structure did not appear to be strongly influenced by department size, other than in terms of the vertical structural design. In short, there do not appear to be any common formulas or prescribed solutions for how organizations should or do orchestrate the design of the public relations department structure, rather CCOs appear to be able to exercise a degree of latitude in determining what works best for them.  相似文献   
265.
Urbanization is a major global change inducing complex and multiple modifications of landscapes and ecosystems. The spatial distributions of organisms experiencing these modifications will likely shift specifically, depending on each species’ response to each environmental modification induced by urbanization. We sampled two ant genera (Lasius and Tetramorium) at 1248 locations along an urbanization gradient in Lyon, France and used high resolution spatial layers for 18 spatial (e.g., open habitat fragmentation, bioclimatic data and surface temperatures) and temporal (e.g., comparison of Normalized Difference Vegetation Index between 1986 and 2015) environmental variables associated with urbanization. Coupling two different analytical methods (Outlying Mean Index and Boosted Regression Trees), we showed that each species’ distribution was influenced by its own combination of environmental factors. Two morphologically cryptic Tetramorium species (T. sp.E and T. sp.U2) were both highly abundant but with opposite responses to urbanization: while T. sp.E was favored by urbanized habitat, T. sp.U2 avoided urbanized areas. Among Lasius species, we detected 63 occurrences of the invasive ant Lasius neglectus, the distribution of which was favored only by embankments along roads. We found that, even at this reduced spatial scale, climatic effects influenced most species and interacted with urbanization factors.  相似文献   
266.
Investigations of urbanization effects on birds have focused mainly on breeding traits expressed after the nest-building stage (e.g. first-egg date, clutch size, breeding success, and offspring characteristics). Urban studies largely ignored how and why the aspects of nest building might be associated with the degree of urbanization. As urban environments are expected to present novel environmental changes relative to rural environments, it is important to evaluate how nest-building behavior is impacted by vegetation modifications associated with urbanization. To examine nest design in a Mediterranean city environment, we allowed urban great tits (Parus major) to breed in nest boxes in areas that differed in local vegetation cover. We found that different measures of nest size or mass were not associated with vegetation cover. In particular, nests located adjacent to streets with lower vegetation cover were not smaller or lighter than nests in parks with higher vegetation cover. Nests adjacent to streets contained more pine needles than nests in parks. In addition, in nests adjacent to streets, nests from boxes attached to pine trees contained more pine needles than nests from boxes attached to other trees. We suggest that urban-related alterations in vegetation cover do not directly impose physical limits on nest size in species that are opportunistic in the selection of nesting material. However, nest composition as reflected in the use of pine needles was clearly affected by habitat type and the planted tree species present, which implies that rapid habitat change impacts nest composition. We do not exclude that urbanization might impact other aspects of nest building behaviour not covered in our study (e.g. costs of searching for nest material), and that the strengths of the associations between urbanization and nest structures might differ among study populations or species.  相似文献   
267.
Eliciting representative samples of personal networks   总被引:1,自引:0,他引:1  
In this paper we introduce and evaluate a method for eliciting a representative sample of total personal networks. First names were used as a cue to elicit a sample of 14 alters from 712 respondents through a telephone interview. Network characteristics for each respondent were calculated as averages and proportions across the 14 alters. These were compared to other studies using more specialized network generators. Our method produced results which are logically consistent with those expected from a generator that elicits a sample from the total rather than a specialized subset of the total network. The proportions of kin relations, average tie strength and frequency of contacts are found to be lower than network generators designed to elicit networks of social support. Given our conclusion that the sample is representative of the total network, we examine the varying characteristics of respondents and their networks based on the domination of a particular relation type in their network. This analysis provides answers to such questions as ‘What characteristics of respondents account for the proportion of family relations in their network?‘ and ‘What are the similarities between respondents whose networks are made up of mostly work-related relations?’  相似文献   
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This paper explores how social workers intervene with affluent parents when there are child protection concerns about neglect. Based on data gathered from a small‐scale exploratory qualitative study with 30 practitioners from 12 local authorities across England, this study examined three overarching questions: (a) How do social workers identify risk factors for vulnerable children in affluent circumstances? (b) Which factors inhibit or enable social workers' engagement with resistant affluent parents when there are child protection concerns? (c) What kind of skills, knowledge, and experience is necessary for social workers to effectively assert their professional authority with affluent parents when there are concerns about abuse and neglect? The findings revealed that indicators of neglect can be difficult to identify and challenging to respond to when parents are affluent. Results indicate that social workers have to navigate complex power relationships with parents who are able to use their class privileges to resist their interventions. The paper concludes with a discussion of social workers' skills and capacities for engaging highly‐resistant affluent parents in the child protection system.  相似文献   
270.
This article examines halakhic (Jewish legal) passages that relate to homosexuality and marriage between two males. The article sets forth the respective positions of contemporary Jewish denominations in regard to homosexual marriage. Homosexual marriage is a case of first impression in Judaism and requires new decisions and new marriage contracts. The principal thesis of the article is that contemporary Judaism can accommodate philosophically--but also legally--a halakhic framework of thinking, same-sex marriage between men. Judaism does not have to opt for the perspectives of Reform and Reconstructionist Judaism, which have, to a major extent, freed themselves from the traditions and rituals of Jewish law. After examining marriage contracts in Rabbinic literature, specific examples are presented of how homosexual marriage between two males may be implemented.  相似文献   
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