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91.
In this overview of Volume 64, Issue 1, of the Journal of Social Issues , we describe why it is important to consider the diversity of student pathways through time and in context and why it is important to focus particularly on youth who defy predictions. We describe the ways in which expectations are formed in statistical analysis and also in real-world education systems and how the structural rigidity inherent in such systems can lead to poor person–environment fit for young people in education or training and to misleading statistical analysis. Our intention is to move beyond analytic approaches that assume "one size fits all" while recognizing both that policy cannot provide fully individualized environments for everyone and that research cannot focus only on the unique characteristics of each individual. By focusing on individuals for whom our models typically do not apply, we highlight the value of research on complex but meaningful patterns of commonality among people, not in terms of the average person or effects, but in terms of coherent, distinct, and relatively homogenous subgroups of people experiencing systematic and consequential differences in their lives and lifepaths . 相似文献
92.
Lior Blank Amiel Vasl Bracha Y. Schindler Gyongyver J. Kadas Leon Blaustein 《Urban Ecosystems》2017,20(4):911-917
From an ecological perspective, urban green roofs can be viewed as green islands embedded in an urban matrix. Island biogeography theory suggests that species richness on an island is the outcome of dynamic equilibrium between immigration and extinction. Immigration is affected by the size of an island and distance of an island from a colonizing source. In the context of green roofs, building height and horizontal distance from green areas can potentially be a limiting factor for many species. Here, we considered two distance components of green roofs - vertical (building height) and horizontal (distance of building from open green areas). Based on island biogeography theory, we would expect species richness or community similarity to be negatively related to horizontal or vertical distances from colonizing sources. The green roof literature addressing such questions is currently sparse. In our review comprised of 10 studies, we were unable to identify consistent statistically significant richness-distance or community similarity-distance (vertical or horizontal) relationships. The absence of statistically significant relationships could be due in large part to low statistical power as a consequence of both the paucity of roofs and limited range of vertical distances in many of the existing studies. In addition, these roofs differ in numerous aspects (e.g. roof size, age, substrate type, plant composition and building height). The low number of replicates, combined with the lack of homogeneity among replicates combines to reduce statistical power and our ability to detect differences. 相似文献
93.
94.
P.D. Harms Marcus Credé Michael Tynan Matthew Leon Wonho Jeung 《The Leadership Quarterly》2017,28(1):178-194
Stress has been implicated as an important determinant of leadership functioning. Conversely, the behavior of leaders has long been argued to be a major factor in determining the stress levels of followers. Yet despite the widespread acknowledgement that stress and leadership are linked, there has been no systematic attempt to organize and summarize these literatures. In the present, we meta-analytically review the relationship between three leadership constructs (transformational leadership, leader-member exchange, and abusive supervision) and stress and burnout. Our analyses confirm that leader stress influences leader behavior and that leadership behaviors and leader-follower relationships are significant determinants of stress and burnout in subordinates. We build on these results to suggest new avenues for research in this domain as well as discussing how these results can inform practice with regards to leader development. 相似文献
95.
The impacts of apportionment method,and legal and illegal immigration,on Congressional apportionment in the year 2000 总被引:1,自引:1,他引:0
This paper first discusses two methods for apportioning the US House of Representatives, Equal Proportions and Major Fractions. The method of Equal Proportions will be used in the 2000 apportionment, but it is biased in favor of smaller states. The method of Major Fractions is a mathematically unbiased method, but will not be used in 2000. However, we show that apportionments for 2000 would not differ much according to these two methods. We also consider different definitions of the apportionment population, mainly based on including or excluding legal and illegal immigrants from the apportionment process. We show that the apportionment results for 2000 will not differ if illegal immigrants who entered the USA in the 1990s are kept in, or removed from, the apportionment population. But the apportionment results will differ in a major way if all persons immigrating to the USA in the 1990s are kept in, or removed. 相似文献
96.
Manolis Pratsinakis Russell King Carmen Leon Himmelstine Caterina Mazzilli 《International migration (Geneva, Switzerland)》2020,58(1):15-30
Since the 1990s young South Europeans have been attracted to London by the dynamic labour market and cultural radiance of the city, but also pushed by unfavourable conditions in the labour markets of their origin countries. Subsequently, the Eurozone crisis, austerity politics and their socio-political consequences have markedly intensified migration rates. But did they also signify a rupture in terms of the motivations, experiences and aspirations of the migrants? Drawing on in-depth interviews with Greek, Italian and Spanish migrants of different educational levels, we find that post-materialist motivations and pro-migration dispositions prevail among the “crisis-migrants”. Migration is seen and experienced as a step forward, rather than a disruptive force, signalling a positive message in defence of intra-EU free mobility. Yet at times of neoliberal deregulation and economic and political uncertainty, aspirations for socio-economic stability and settlement are also of growing importance, questioning mobility as the normative way of contemporary life. 相似文献
97.
98.
Cedric de Leon 《Journal of historical sociology》2017,30(3):518-544
Prevailing scholarly approaches to the U.S. Secession Crisis suggest that the crisis reflected either the interests of slaveowners or mounting socioeconomic pressure in the electorate. Both arguments suffer from empirical and analytical challenges, chief among these being that the southern Whig Party and its planter base actively resisted secession until the early 1850s. Why did the largest slaveowners oppose disunion only to fold by 1861? Drawing on beat‐level electoral returns, newspapers, and private correspondence from antebellum Tuscaloosa County, Alabama, I argue that the answer lies in conceiving of the prelude to secession as a “crisis sequence,” so named because it precipitates crises of hegemony, when no one political actor possesses the mass consent to rule and once salient social cleavages cease to resonate. Such sequences destabilize the relationship between parties and their constituents and allow political allegiances to swing wildly from one party to the next, giving such sequences their nonlinear character. 相似文献
99.
The issue of declining population in many more-developed countries (MDCs) and continued rapid population growth in most less-developed countries (LDCs) is addressed in this paper. The authors expand the stable model theory beyond closed populations and apply it to situations where migration patterns are either in or out of a region. Through the use of the complementarity concept, the study illustrates what the impact of continued migration out of LDCs into MDCs would be on both regions. 相似文献
100.
Leon Anderson 《Symbolic Interaction》2011,34(2):133-157
While leisure is often represented in public discourse as a realm of freedom and self‐actualization, for most adults the pursuit of serious leisure activities involves negotiating familial and professional constraints. Based on the author's autoethnographic experiences with sport skydiving, this article examines the familial and professional constraints that he has experienced, as well as the challenges to recreational skydivers posed by current trends in the sport. The author describes various only partly successful strategies he has used to manage the tensions between his skydiving pursuits, work, and family. Proposing his analysis as an example of “analytic autoethnography” the author concludes by considering the implications of his research for better understanding serious leisure pursuits more generally, as well as for answering the personal question, should I continue to jump out of planes? 相似文献