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Aguilera Guillermo Ekroos Johan Persson Anna S. Pettersson Lars B. Öckinger Erik 《Urban Ecosystems》2019,22(2):335-344
Urban Ecosystems - Loss and fragmentation of semi-natural grasslands have had negative consequences for grassland biodiversity, such as butterflies. Urban parks and other urban green spaces have so... 相似文献
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Yves Bourdet Maria Persson 《Development policy review : the journal of the Overseas Development Institute》2014,32(6):675-699
This article explores whether trade facilitation – i.e. improved and simplified trade procedures – could be an important part of the reform agenda of the Barcelona Process. Adopting a Southern perspective by focusing on exports to the European Union (EU) from non‐EU Mediterranean countries, it tests whether the efficiency of trade procedures affects (i) bilateral volumes of exports and (ii) the number of products exported. The findings suggest that trade facilitation could lead to substantially increased export volumes and export diversification. 相似文献
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This paper reviews global and multiple tests for the combination ofn hypotheses using the orderedp-values of then individual tests. In 1987, Röhmel and Streitberg presented a general method to construct global level α tests based on orderedp-values when there exists no prior knowledge regarding the joint distribution of the corresponding test statistics. In the case of independent test statistics, construction of global tests is available by means of recursive formulae presented by Bicher (1989), Kornatz (1994) and Finner and Roters (1994). Multiple test procedures can be developed by applying the closed test principle using these global tests as building blocks. Liu (1996) proposed representing closed tests by means of “critical matrices” which contain the critical values of the global tests. Within the framework of these theoretical concepts, well-known global tests and multiple test procedures are classified and the relationships between the different tests are characterised. 相似文献
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Gudrun Happich 《Organisationsberatung, Supervision, Coaching》2013,20(3):295-305
Employee retention is getting more important and urgent because of the high skill shortages. Studies and practical experiences show that in this area there are still many deficits in medium-sized companies. For them, at the same time, the departure of top performers is hard to cope. A first step towards binding valuable employees is that medium-sized companies become aware of their attractiveness especially for the younger generation of employees. Furthermore, the top performers in the company should be identified and their values and potentials should be worked out in an individual coaching process. Customized individual coaching is the best long term solution to keep top performers in medium-sized companies and to deploy them in the right position. 相似文献
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Danuta Biterman Eva Franzén Gudrun Persson 《International Journal of Social Welfare》2007,16(S1):S5-S10
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Gun E. B. Persson 《Social Development》2005,14(2):206-228
Children's target experiences (as recipients of prosocial peer acts and victims of peer aggression) were investigated for their concurrent and longitudinal associations with prosocial and aggressive behavior. Forty‐four children (initially 22–40 months) were observed in naturalistic interactions with peers during a two‐month period for each of three consecutive years. Results revealed no consistency over time in children's experiences as targets for aggressive or prosocial peer acts, although there was some indication that altruistic target experiences may be stable from the end of the preschool period. Early behavior appeared to affect the way children were later treated by peers, but no support was found for the idea that early target experiences influence later behavior. Prosocial behavior was concurrently and longitudinally associated with prosocial target experiences. Aggressive behavior reduced the likelihood of children being targets of prosocial peer behavior and, over time, also of their being targets of peers’ aggression. 相似文献
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Torsten Persson 《Econometrica : journal of the Econometric Society》2002,70(3):883-905
Do political institutions shape economic policy? I argue that this question should naturally appeal to economists. Moreover, the answer is in the affirmative, both in theory and in practice. In particular, recent theoretical work predicts systematic effects of electoral rules and political regimes on the size and composition of government spending. Results from ongoing empirical work indicate that such effects are indeed present in the data. Some empirical results are consistent with theoretical predictions: presidential regimes have smaller governments and countries with majoritarian elections have smaller welfare‐state programs and less corruption. Other results present puzzles for future research: the adjustment to economic events appears highly institution‐dependent, as does the timing and nature of the electoral cycle. 相似文献
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We construct a model where incumbents can either acquire basic innovations from entrepreneurs, or wait and acquire developed innovations from entrepreneurial firms supported by venture capitalists. We show that venture‐backed entrepreneurial firms have an incentive to overinvest in development vis à vis incumbents due to strategic product market effects on the sales price of a developed innovation. This will trigger preemptive acquisitions by incumbents, thus increasing the reward for entrepreneurial innovations. We also show that venture capital can emerge in equilibrium if venture capitalists have cost advantages, or if development is associated with double moral hazard problems. (JEL: G24, L1, L2, M13, O3) 相似文献
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The official rhetoric of welfare states unconditionally pays tribute to older people's right to express dissatisfaction. In practice, users of older services in welfare states may be deprived of their “exit” options and face considerable constraints when it comes to raising their “voices.” For example, when older people in nursing homes would like to lodge a complaint, they may well be referred to the very staff members they depend on in their everyday lives. This article analyzes a national case study in which these contradictory tendencies are especially explicit: formal influence channels for older people in Sweden. Using data from structured interviews with 100 representatives of Swedish municipalities and drawing on Hirschman's (1970) theory on exit and voice, the article analyzes obstacles to older service users' influence in Sweden and develops explanations for these obstacles in terms of social contexts. 相似文献