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501.
The paper deals with a segment of the digitization of work: It examines the forms and conditions of work in the so-called sharing economy (SE). Based on the analysis of 67 internet platforms, three segments – the “exchange and gift economy”, the “niche and side job economy” as well as the “platform economy” – are distinguished as separate institutional spheres of the SE. On this basis, five dimensions of work in these segments are comparatively analyzed. It is shown that patterns of work differ among the three segments with view to activity patterns, gratification, qualification requirements, the role of technology and control mechanisms. The paper then discusses a shift in the determinants of work: it is argued that classical factors no longer prevail, but are partly supplemented, partly replaced by “internet communities” and the socio-technical structures and strategies of the platform providers. Not least, the absence of formal employment contracts in platform-user-relationships stands out.  相似文献   
502.
Chinese university patenting has gained importance in recent years. Using a comprehensive dataset of university patents by 155 leading Chinese universities from 1991 to 2009, our study pursues two objectives: First, we analyze the quantity and quality of patents filed by leading Chinese universities. Second, we analyze the role of subsidy programs with regard to university patenting in China. With regard to the first objective, our results show that university patents witnessed rapid growth in terms of quantity while patent quality did not increase to a similar degree. Regarding the second objective, we find that a subsidy program to promote research excellence at selected universities is a significant driver of patent quantity and quality. In contrast, a subsidy program that decreases the costs of patent applications seems to enhance patent quantity but not patent quality. We conclude that innovation policies which aim to stimulate patents of higher quality should focus primarily on increasing university R&D, and to a lesser extent on decreasing the costs of university patenting.  相似文献   
503.
For scholars of international environmental agreements, the role of non-state actors has been a central focus. There is a considerable literature on the influence of environmental NGOs and business groups on state behaviour and in turn international environmental outcomes. However, much less empirical work has been done to examine the influence of these actors and the strategies they can use in prolonged international environmental negotiations that last for years or decades. This article takes up this task. Drawing on a rich empirical data set on the role of European-based actors in the international climate change negotiations, it considers the influence of non-state actors in prolonged negotiations and identifies four strategies that these actors can use to influence state actors and non-state actors alike.  相似文献   
504.

Objectives

The aim of this review was to assess the effectiveness of music therapy on improving the mental health of offenders in correctional settings.

Methods

Multiple databases and journals were searched to identify randomized controlled trials and quasi-randomized controlled trials of music therapy for offenders in correctional settings.

Results

Five studies (n?=?409; predominantly male) were included in random-effects meta-analyses. Music therapy was effective for promoting offenders’ self-esteem (Hedges’ g?=?0.55, p?<?0.001) and social functioning (g?=?0.35, p?<?0.05). Effects on anxiety and depression depended on the number of sessions. For both outcomes, the studies with 20 or more sessions had larger effects than the study that had fewer than 20 sessions, and this difference was statistically significant (Q?=?11.88, df?=?1, p?<?0.001, anxiety; Q?=?9.16, df?=?1, p?=?0.002, depression). No significant effects were found on behavior management or between different music therapy approaches.

Conclusions

Music therapy may be helpful for offenders to improve mental health. Future studies should consider including offenders of both genders, using larger sample sizes, and examining long-term effects. Publication bias may be an issue for this review given the small number of studies and the small sample sizes.
  相似文献   
505.
506.
Interested in bringing together federalism and political representationas two distinct areas of research in comparative politics, thisedition of Publius: The Journal of Federalism introduces a collaborativeresearch project that raised questions about the impact of institutionalarrangements on strategies for political representation. Definitionsof the project's two key concepts of federalism and compoundedrepresentation are briefly addressed initially. Summaries arepresented of how these two concepts are empirically appliedin the studies by the five scholars presented in this volume.  相似文献   
507.
This paper asks the question whether political ideology affects economic growth. Voters may demand inefficient levels of redistribution and government intervention, and they may care too little for aspects that really matter for the economy. Their norms and perceptions of society might, via their political ideology, affect economic performance. The paper presents evidence suggesting that rightwing societies have grown faster in the last decades than other democratic societies. Further analysis suggests that these societies develop better legal systems and less government intervention, which in turn explain some but not all of the growth difference.  相似文献   
508.
509.
The authors present a case of the death of a 60-year-old man shot using rubber projectiles that were fired by a police officer from a Mossberg smooth-bore shotgun in an enclosed space from a distance of a few metres. The post-mortem examination revealed that death had been due to gunshot wounds in the chest which had caused heart and lung damage with subsequent massive internal haemorrhaging.  相似文献   
510.
A 26-year-old male came to hospital around midnight complaining about muscle pain of the extremities as well as the tongue and slightly raised temperature. He reported the intake of an unknown amount of sinicuichi tea he had fermented over 24 h by adding yeast and sugar. The patient was treated with Vomex A (dimenhydrinate) and released from hospital the following afternoon. A blood sample taken shortly after submission and a small amount of the used plant material were available for analysis. Herbal drugs are widely used as stimulants as a legal alternative to illegal psychoactive drugs or in traditional context. Among many others like Sassafras officinalis, Salvia divinorum or Ephedra, Heimia salicifolia ("sinicuichi"), a species of the lythraceae family, is available via several online shops. Brewed up or fermented and consumed, the so-called sinicuichi tea may cause exhilarating feelings and an alteration of awareness accompanied by bradycardia, relaxation of the muscles and a pleasant faintness. Therefore Sinicuichi brew and heimia leaves are widely used for medication by the natives of Central and South America. After liquid extraction with acetone five different alkaloids were detected in the plant material by LC-MS/MS operated in the Q1 scan mode applying a TurboIonSpray source. Subsequently, Product Ion Spectra were recorded and after confirming the molecular formula by determining the accurate masses, possible structures of H. salicifolia alkaloids were assigned. The information of the Product Ion Spectra was then used to set up a sensitive multiple reaction monitoring (MRM) method. Applying the MRM method to the patient's serum sample after alkaline liquid-liquid extraction all of the five heimia alkaloids detected in the plant material were also detected qualitatively in the serum extract, confirming the ingestion.  相似文献   
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