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271.
Heikki Patomäki 《Globalizations》2019,16(7):1006-1011
ABSTRACTAmin’s Leninist-Maoist vision is unlikely to be persuasive to twenty-first century citizens. Nonetheless, there is a rational kernel in Amin’s call for a new worldwide political organization. Some structures, mechanisms and tendencies of the capitalist world economy are relatively enduring and some patterns recurrent, although the world economy is also fluid, constantly changing and evolving. Although waves of globalization have radically transformed human societies and their economic activities during the past 500 years also in many positive ways, the expansion of the international society and world economy has often been characterized by violence, imperial subjection and colonial expropriation and exclusion. There is a rational kernel also within Amin’s analysis of the current world-political situation. Command over space and time by investors and megacorporations is power. Emancipation aims at freedom from domination. The decline of the World Social Forum indicates that progressive politics must move ‘beyond the concept of a discussion forum’. My argument is that emancipation from unnecessary, unneeded and unwanted sources of determination requires global transformative agency and planetary visions about alternatives. 相似文献
272.
This article shows entropic tilting to be a flexible and powerful tool for combining medium-term forecasts from BVARs with short-term forecasts from other sources (nowcasts from either surveys or other models). Tilting systematically improves the accuracy of both point and density forecasts, and tilting the BVAR forecasts based on nowcast means and variances yields slightly greater gains in density accuracy than does just tilting based on the nowcast means. Hence, entropic tilting can offer—more so for persistent variables than not-persistent variables—some benefits for accurately estimating the uncertainty of multi-step forecasts that incorporate nowcast information. 相似文献
273.
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275.
Enrique Ogliastri Urs P. Jäger Andrea M. Prado 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2016,27(1):222-248
Some nonprofits evolve from small into large international organizations. For years, “structure follows strategy” (Chandler) has been the dictum to explain organizational strategic changes like the ones in nonprofits. But scholars also recognized organization structure to be a precondition to carry out certain strategies. Nevertheless, research on structure and strategy in nonprofits is limited. This paper explores the mutual influence of organization structure and strategy in high-performing nonprofits in Iberoamerica based on a secondary analysis of 20 unpublished research cases of the Social Enterprise Knowledge Network. It follows the research question: Which organizations’ strategies and structures characterize high-performing nonprofits over time? Four types of organizing patterns emerged: starting-up, professionalizing, decentralizing, and conglomerating. 相似文献
276.
We used a regional sample of children in long‐term foster care to investigate the prevalence of placement breakdown in adolescence, and to assess risk factors/risk markers for placement disruption. The sample consisted of all 136 foster children in the region, born 1980–1992, who on their 12th birthday had been in the same foster family for at least 4 years. They were followed in case files until date of disruption or their 18th birthday. Data on conditions before and during placement were retrieved from case files, and analysed in bi‐ and multivariate models. Results showed that one in four placements broke down in adolescence. The median child who experienced a breakdown was 14 years old, and had been in the same foster home for more than 10 years. Prominent risk factors were (i) being placed after age 2 and (ii) having a birth sibling in the same foster home. We also uncovered strong risk markers that can be viewed as precursors of placement disruption. When the child or the foster parents repeatedly over time expressed dissatisfaction with the placement, this ended with a placement breakdown in 60% of cases. Implications for practice are discussed. 相似文献
277.
Both longitudinal and cross-sectional analyses on a large and recent Swedish data set demonstrate that, compared to children in intact families, children who have experienced family dissolution or reconstitution show lower educational attainment at age 16. Time constraints do not seem to be an important mechanism behind the negative effect of separation. Economic deprivation affects children s attainment negatively, but downward social mobility appears to be an even more important causal mechanism: Losing the parent with the higher social position probably reduces social capital and aspirations. When we control for socioeconomic characteristics, a small net effect of separation and reconstitution remains. 相似文献
278.
The aim of this study was to assess the quality of occupational history information obtained via retrospective interview questions by comparison with occupational information for the same individuals obtained via a number of censuses. Moreover, morbidity patterns were investigated for different occupational exposure categories that were constructed either on occupational data gathered retrospectively or on data gathered longitudinally through censuses. The study population consisted of 6764 men and 2104 women who were interviewed within the Swedish Survey on Living Conditions. Census data on occupation from 1960, 1970 and 1975 were used for comparison. There was high level of agreement between the two data bases for occupational categories containing workers who were stable in their occupations. The correspondence was better for women. Prevalence rates for different long-term illnesses were almost the same for the categories, no matter which of the data bases was used for constructing the categories. Thus, we have found that self-reported work histories might be a useful way of controlling for occupational exposures in the past. 相似文献
279.
The paper discusses how the power perspective has been considered and discussed in qualitative social studies on the use of mobile phones in practices at home, work and public places. Some themes relevant from the aspect of power negotiations were extrapolated from the reviewed literature: constant availability at home and work, and the mobile phone as a public status symbol in respect to its design and use in space, time, and social surroundings. The review also aims to show how social variables affecting the adoption and use of the mobile phone have so far been analyzed in research. The writers conclude that mobile phones have been interpreted to reproduce and renew traditional power hierarchies. Still, more nuanced research is needed to understand the micro‐mechanisms of power in the socio‐cultural contexts of the use of mobile phones. 相似文献
280.
Optimality conditions for a bilevel matroid problem 总被引:1,自引:1,他引:0
Diana Fanghänel 《Journal of Combinatorial Optimization》2011,22(4):594-608
In bilevel programming there are two decision makers, the leader and the follower, who act in a hierarchy. In this paper we
deal with a weighted matroid problem where each of the decision makers has a different set of weights. The independent set
of the matroid that is chosen by the follower determines the payoff to both the leader and the follower according to their
different weights. The leader can increase his payoff by changing the weights of the follower, thus influencing the follower’s
decision, but he has to pay a penalty for this. We want to find an optimum strategy for the leader. This is a bilevel programming
problem with continuous variables in the upper level and a parametric weighted matroid problem in the lower level. We analyze
the structure of the lower level problem. We use this structure to develop local optimality criteria for the bilevel problem
that can be verified in polynomial time. 相似文献