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331.
Lew Hardy Calum A. Arthur Graham Jones Adie Shariff Kathy Munnoch Izzy Isaacs Adrian J. Allsopp 《The Leadership Quarterly》2010,21(1):20-32
Two studies examined the effects of a differentiated model of transformational leadership on follower outcomes. In Study 1, 484 UK Royal Marine recruits completed questionnaires about their trainers' leadership behaviors and their own attitudes towards training. Training outcome was measured as successful completion of training or non-completion. Discriminant function analyses identified that fostering acceptance of group goals, inspirational motivation, appropriate role model, individual consideration, and contingent reward significantly discriminated between pass and failure. A separate discriminant function analyses revealed that the attitudinal variables of self-confidence, resilience, and satisfaction also successfully discriminated between pass and failure. Study 2 used a true experimental design to examine the effectiveness of a transformational leadership intervention. Participants were 85 experimental and 67 control recruits who completed questionnaires at weeks 5 and 15 of recruit training. Results revealed that 3 of the 5 key leadership behaviors, and all of the 3 recruit attitudinal variables measured, were significantly enhanced by the intervention. 相似文献
332.
The aim of this paper is to extend the concept of dynamic capabilities. Building on prior research, we suggest that there are three levels of dynamic capabilities which are related to managers' perceptions of environmental dynamism. At the first level we find incremental dynamic capabilities: those capabilities concerned with the continuous improvement of the firm's resource base. At the second level are renewing dynamic capabilities, those that refresh, adapt and augment the resource base. These two levels are usually conceived as one and represent what the literature refers to as dynamic capabilities. At the third level are regenerative dynamic capabilities, which impact, not on the firm's resource base, but on its current set of dynamic capabilities, i.e. these change the way the firm changes its resource base. We explore the three levels using illustrative examples and conclude that regenerative dynamic capabilities may either come from inside the firm or enter the firm from outside, via changes in leadership or the intervention of external change agents. 相似文献
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334.
Johnson Holt Adrian W. Leach Gritta Schrader Françoise Petter Alan MacLeod Dirk Jan van der Gaag Richard H. A. Baker John D. Mumford 《Risk analysis》2014,34(1):4-16
Utility functions in the form of tables or matrices have often been used to combine discretely rated decision‐making criteria. Matrix elements are usually specified individually, so no one rule or principle can be easily stated for the utility function as a whole. A series of five matrices are presented that aggregate criteria two at a time using simple rules that express a varying degree of constraint of the lower rating over the higher. A further nine possible matrices were obtained by using a different rule either side of the main axis of the matrix to describe situations where the criteria have a differential influence on the outcome. Uncertainties in the criteria are represented by three alternative frequency distributions from which the assessors select the most appropriate. The output of the utility function is a distribution of rating frequencies that is dependent on the distributions of the input criteria. In pest risk analysis (PRA), seven of these utility functions were required to mimic the logic by which assessors for the European and Mediterranean Plant Protection Organization arrive at an overall rating of pest risk. The framework enables the development of PRAs that are consistent and easy to understand, criticize, compare, and change. When tested in workshops, PRA practitioners thought that the approach accorded with both the logic and the level of resolution that they used in the risk assessments. 相似文献
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336.
Models of 'ordinary' and 'special' daily living: matching residential care to the mental-health needs of looked after children 总被引:1,自引:0,他引:1
Adrian Ward 《Child & Family Social Work》2006,11(4):336-346
This paper proposes a set of distinctions between ‘ordinary’ and ‘special’ modes of everyday living in residential settings for young people in the ‘looked after’ system. The paper begins by reviewing both quantitative and qualitative evidence on the mental‐health needs of the young people, arguing that there is evidence of very high levels of mental distress and disturbance within this group, and that this distress is often undiagnosed and untreated both by psychiatric professionals and within the residential care system itself. There follows a commentary on the tacit assumptions underpinning much residential practice, especially the emphasis in some policy and legal documentation on the young people’s need for ‘ordinary’ everyday experience. The concept of the ‘ordinary’ is problematized, and it is argued that while young people do need to be supported towards mainstream ‘ordinary’ everyday living, they also need specialized everyday care in which their emotional and psychological needs can be recognized and responded to. Four models of ‘special everyday living’ are proposed, based upon existing literature on residential practice, and it is argued that residential care programmes should be based upon a mix of these special and ordinary provisions if the young people’s emotional needs are to be met. 相似文献
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338.
Do single‐arm trials have a role in drug development plans incorporating randomised trials?
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Often, single‐arm trials are used in phase II to gather the first evidence of an oncological drug's efficacy, with drug activity determined through tumour response using the RECIST criterion. Provided the null hypothesis of ‘insufficient drug activity’ is rejected, the next step could be a randomised two‐arm trial. However, single‐arm trials may provide a biased treatment effect because of patient selection, and thus, this development plan may not be an efficient use of resources. Therefore, we compare the performance of development plans consisting of single‐arm trials followed by randomised two‐arm trials with stand‐alone single‐stage or group sequential randomised two‐arm trials. Through this, we are able to investigate the utility of single‐arm trials and determine the most efficient drug development plans, setting our work in the context of a published single‐arm non‐small‐cell lung cancer trial. Reference priors, reflecting the opinions of ‘sceptical’ and ‘enthusiastic’ investigators, are used to quantify and guide the suitability of single‐arm trials in this setting. We observe that the explored development plans incorporating single‐arm trials are often non‐optimal. Moreover, even the most pessimistic reference priors have a considerable probability in favour of alternative plans. Analysis suggests expected sample size savings of up to 25% could have been made, and the issues associated with single‐arm trials avoided, for the non‐small‐cell lung cancer treatment through direct progression to a group sequential randomised two‐arm trial. Careful consideration should thus be given to the use of single‐arm trials in oncological drug development when a randomised trial will follow. Copyright © 2015 The Authors. Pharmaceutical Statistics published by JohnWiley & Sons Ltd. 相似文献
339.
On 1 July 2012, Hong Kong (HK) celebrated the 15th Anniversary of its change of sovereignty to the People's Republic of China (PRC). During this period, migration has diversified greatly. Various new visa categories have been created. People from Mainland China and the rest of the world come to HK for work and settlement and HK people have gone to Mainland and overseas to study and work. To appreciate and better plan the growing diversity of migration to, from, and through HK, this article benchmarks the current legal categorizations of migration and calls for the development of a coherent theoretical approach that can better harmonize research and policy. We believe a transdisciplinary view can help generate the range of evidence needed to plan for diversity, and that this is best coordinated through a new HK Migration Observatory. 相似文献
340.
Strengthening the Systemic Ties that Bind: Integrating Common Factors into Marriage and Family Therapy Curricula
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Eli A. Karam Adrian J. Blow Douglas H. Sprenkle Sean D. Davis 《Journal of marital and family therapy》2015,41(2):136-149
Specific models guide the training of marriage and family therapists (MFTs) as they offer both structure and organization for both therapists and clients. Learning models may also benefit therapists‐in‐training by instilling confidence and preventing atheoretical eclecticism. The moderate common factors perspective argues that models are essential, but should not be taught as “the absolute truth,” given there is no evidence for relative efficacy of one empirically validated model versus another, and no single model works in all instances. The following article provides a blueprint for infusing a common factors perspective into MFT programmes by reviewing innovations in course design, outlining specific teaching strategies, and highlighting potential implementation challenges. 相似文献