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排序方式: 共有114条查询结果,搜索用时 15 毫秒
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University R&D and Firm Productivity: Evidence from Italy 总被引:1,自引:0,他引:1
Giuseppe Medda Claudio Piga Donald S Siegel 《The Journal of Technology Transfer》2004,30(1-2):199-205
Ed Mansfield wrote several papers on the private returns to basic research (e.g. Mansfield, 1980) and the influence of academic research on industrial innovation (e.g. Mansfield, 1991). We extend this line of research by assessing the impact of university research on total factor productivity growth of Italian manufacturing firms. The econometric analysis is based on reduced-form estimation of the R&D capital stock model, including controls for two potential sources of sample selection bias, as proposed by Crepon et?al (1998) and Piga and Vivarelli (2004). Our results suggest that while there are positive returns to collaborative research with other firms, collaborative research with universities does not appear to directly stimulate productivity. We interpret this result as consistent with recent evidence (e.g. Hall et?al 2001, 2003) suggesting that firms engage in collaborative research with universities when appropriability conditions are weak. 相似文献
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A good relationship between council and senior staff is essential for the successful operation of the municipality. However, the academic treatment of the council-staff relationship has lagged real-world expectations. The purpose of this article is to extend the literature on council-staff relations by identifying the competencies associated with the concept of political acuity needed to maintain this good relationship. 相似文献
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A direct requirement for most Americans to purchase any product or service .... certainly is an encroachment on individual liberty, but it is no more so than a command that restaurants or hotels are obliged to serve all customers regardless of race, that gravely ill individuals cannot use a substance their doctors described as the only effective palliative for excruciating pain, or that a farmer cannot grow enough wheat to support his own family. The right to be free from federal regulation is not absolute, and yields to the imperative that Congress be free to forge national solutions to national problems, no matter how local--or seemingly passive--their individual origins. 相似文献
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Abstract: One of the major characteristics of the increasing complexity of government in the 1990s is the heightened power of public servants. This phenomenon has been well documented at the federal and provincial levels. The smaller size of local governments has meant that this trend has been slower to develop there, but it seems clear that it is emerging as an issue at this level of government as well. The increasing power of public servants challenges the traditional, simple paradigm of the role of politicians and public servants, simply expressed as “politicians on top, experts on tap.” This paradigm is breaking down in a number of ways as decision-making processes become more complex. This means that this once-clear statement of “politicians on top, experts on tap” needs to be replaced by a more complex understanding of the relationship between politicians and staff. Power is now shared by politicians and staff, but the tricky part of the sharing is that democratic principles require that elected politicians must maintain a predominant position. Any revised paradigm must recognize both the sharing of power, and the fact that the sharing cannot be equal. This paper will borrow a framework commonly used to examine the power of public servants in the federal and provincial governments and apply it to local government. As the article will indicate, many of the principles are similar, but there are some important variations. This revised paradigm provides a practical guide for action for both councillors and staff in their dealings with one another. Sommaire: L'augmentation du pouvoir des fonctionnaires constitue l'une des principales caractéristiques de la complexité croissante du gouvernement dans les années 1990. Les preuves de ce phénomèe sont nombreuses aux paliers fédéral et provincial. Étant donné la taille plus réduite des gouvernements locaux, cette tendance s'y développe plus lentement, mais elle commence 1à aussi à susciter des préoccupations Ce phénomène remet en question le paradigme traditionnel sur le rôle des élus et des fonctionnaires, que l'on peut exprimer très simplement comme suit “ les élus en haut, les experts en disponibilité. ” Ces rapports se désagrègent de diverses façons à mesure que le processus décisionnel devient plus complexe. Cet énoncé, jadis très clair, doit être remplacé par une compréhension accrue des rapports entre elus et fonctionnaires. En effet, si les deux groupes partagent maintenant le pouvoir, la difficulté dans ce partage réside en ce que les principes démocratiques exigent que les représentants politiques élus maintiennent une position dominante. Toute redéfinition du paradigme traditionnel doit admettre à la fois le partage du pouvoir et le fait que ce partage est forcement inégal. Le présent article emprunte un cadre généralement utilisé pour examiner le pouvoir des fonctionnaires au sein des gouvernements fédéral et provinciaux, et l'applique au gouvernement local. L'article souligne que de nombreux principes sont similaires, bien qu'ayant toutefois des variations importantes. Cette redefinition constitue un guide d'action pratique tant pour les conseillers municipaux que pour leur personnel dans leurs transactions mutuelles. 相似文献
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Mark T. Greenberg Judith M. Siegel Cynthia J. Leitch 《Journal of youth and adolescence》1983,12(5):373-386
The nature and quality of adolescents' attachments to peers and parents were assessed with the newly developed Inventory of Adolescent Attachments. The relative influence on measures of self-esteem and life satisfaction of relations with peers and with parents was then investigated in a hierarchical regression model. The sample consisted of 213 adolescents ranging from 12 to 19 years of age. Two hypotheses were tested: (1) The quality of perceived attachments both to parents and peers would be related to well-being, and (2) the quality of parental relationships would be a more powerful predictor of well-being than would the quality of peer relationships. Confirming the study's hypotheses, the perceived quality of the adolescents' relationships to both peers and parents, their frequency of utilization of peers, and their degree of negative life change were significantly related to both measures of well-being. The quality of attachment to parents was significantly more powerful than that to peers in predicting well-being. In addition, quality of attachment to parents showed a moderating effect under conditions of high life stress on the measures of self-esteem. The study suggests that it is useful to consider the quality of attachments to significant others as an important variable throughout the life span. 相似文献
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Meloy JR Rivers L Siegel L Gothard S Naimark D Nicolini JR 《Journal of forensic sciences》2000,45(1):147-152
The purpose of this study was to compare certain demographic, clinical, and criminal variables within subgroups of obsessional followers, and compare them to a group of offenders with mental disorders to attempt to replicate earlier findings. A static group archival design utilized a non-random group of convenience and a randomly selected comparison group. Sixty-five obsessional followers and 65 offenders with mental disorders were evaluated by psychiatrists and psychologists for court ordered reasons during their criminal proceedings. Both groups were evaluated during the same period, in the same court diagnostic clinic, and generally for sentencing determinations. The obsessional followers were measured on demographic, diagnostic, pursuit, victim, threat, violence, emotional, motivational, and defense variables. Inferential comparisons that used parametric and nonparametric statistics were done within and between groups on select variables. The obsessional followers had significantly greater estimated IQ than the offenders with mental disorders, but were neither older nor better educated. There were no significant differences in the high prevalence of both DSM-IV Axis I and II diagnoses. Obsessional followers who stalked prior sexual intimates were significantly more likely to have a substance abuse or dependence diagnosis. Obsessional followers who stalked strangers or acquaintances were more likely to be delusional. The majority of the obsessional followers, primarily motivated by anger, both threatened and were violent toward person or property. The modal obsessional follower is an average or above IQ, unemployed, unmarried male in his fourth decade of life. chronically pursuing a prior sexually intimate female. He is diagnosed with substance abuse or dependence and a personality disorder NOS, and has a prior psychiatric, criminal and substance abuse history. He is angry, likely to threaten her, and assault her person or property without causing serious injury. 相似文献
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