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91.
Peters RJ Kelder SH Markham CM Yacoubian GS Peters LA Ellis A 《Journal of drug education》2003,33(4):415-425
In the current study, we used a qualitative approach to investigate relevant beliefs and norms associated with codeine and promethazine hydrochloride cough syrup (CPHCS) consumption, initiation, and perceived addiction among 48 alternative school students who identified themselves as current CPHCS users. In general, both boys and girls believed that CPHCS addiction started during an individual's initial consumption. A majority of both groups reported that their second CPHCS event was initiated during the same or next day after their first event. Our findings suggest that friends and an innovative form of hip-hop music called "screw" are strong reinforcers of CPHCS use. 相似文献
92.
93.
Manktelow Roger; Hughes Phil; Britton Frank; Campbell Jim; Hamilton Bernadette; Wilson George 《British Journal of Social Work》2002,32(4):443-461
Correspondence to Dr Roger Manktelow, School of Social and Community Sciences, University of Ulster Magee College, Derry, BT48 7JL, Northern Ireland. Summary This article reports on the first extensive survey of ApprovedSocial Worker (ASW) activity under the Mental Health (NorthernIreland) Order 1986. The integrated health and social servicesorganizational structure, the adverse effects on individualmental health of the legacy of thirty years of civil conflictand the move from hospital to community care are significantfeatures which have influenced the delivery of mental healthsocial work services locally. The practice and experience ofASWs was surveyed by postal questionnaire and user and carerexperience of compulsory hospital admission was investigatedby a series of focus groups. The study revealed that two-thirdsof ASWs had experience of acting as an applicant in compulsoryhospital admission during the past two years. Nearly half (42per cent) of these ASWs had reported experience of between oneand five admissions and one-tenth had completed over twentyadmissions in the two-year period. In only a small minorityof cases did joint face-to-face assessment with the GeneralPractitioner (doctor) take place; nearly half of ASWs reporteddifficulties in obtaining transport; and only one-fifth of ASWshad experience of acting as a second approved social worker.Half of ASWs reported experience of guardianship, either asapplicant or in making the recommendation. Both service usersand carers reported a lack of understanding about the role ofthe ASW and complained about the lack of alternative resourcesthat ASWs could use to prevent hospital admissions. These findingsare discussed and a number of recommendations are proposed forimprovements to approved social worker practice. 相似文献
94.
George Y. C. Wong Qinggang Diao 《Journal of Statistical Computation and Simulation》2018,88(1):140-155
We consider the piecewise proportional hazards (PWPH) model with interval-censored (IC) relapse times under the distribution-free set-up. The partial likelihood approach is not applicable for IC data, and the generalized likelihood approach has not been studied in the literature. It turns out that under the PWPH model with IC data, the semi-parametric MLE (SMLE) of the covariate effect under the standard generalized likelihood may not be unique and may not be consistent. In fact, the parameter under the PWPH model with IC data is not identifiable unless the identifiability assumption is imposed. We propose a modification to the likelihood function so that its SMLE is unique. Under the identifiability assumption, our simulation study suggests that the SMLE is consistent. We apply the method to our cancer relapse time data and conclude that the bone marrow micrometastasis does not have a significant prognostic factor. 相似文献
95.
Duane W. Crawford Renate M. Houts Ted L. Huston Laura J. George 《Journal of marriage and the family》2002,64(2):433-449
This study challenges the prevailing view that marital companionship promotes marital satisfaction. By following a cohort of married couples for over a decade and by incorporating several methodological improvements—such as refining the measurement of marital satisfaction, determining how much spouses enjoy doing the leisure activities they pursue together and apart, and using diary data to portray marital leisure patterns—we found that the association between companionship and satisfaction is less robust than previously believed, and that it depends on how often spouses pursue activities that reflect their own and their partner's leisure preferences. Over time, involvement in leisure liked by husbands but disliked by wives, whether as a couple or by husbands alone, is both a cause and a consequence of wives' dissatisfaction. 相似文献
96.
George‐Marios Angeletos Jennifer La'O 《Econometrica : journal of the Econometric Society》2013,81(2):739-779
This paper develops a new theory of fluctuations—one that helps accommodate the notions of “animal spirits” and “market sentiment” in unique‐equilibrium, rational‐expectations, macroeconomic models. To this goal, we limit the communication that is embedded in a neoclassical economy by allowing trading to be random and decentralized. We then show that the business cycle may be driven by a certain type of extrinsic shocks which we call sentiments. These shocks formalize shifts in expectations of economic activity without shifts in the underlying preferences and technologies; they are akin to sunspots, but operate in unique‐equilibrium models. We further show how communication may help propagate these shocks in a way that resembles the spread of fads and rumors and that gives rise to boom‐and‐bust phenomena. We finally illustrate the quantitative potential of our insights within a variant of the RBC model. 相似文献
97.
Abstract We review the literature on nonstandard work with three aims: to portray the breadth and nature of the research and theorizing to date, to document the challenges and opportunities this domain poses to both practice and theory, and to bring the study of nonstandard work more to the center stage of micro-OB. After defining nonstandard work and documenting scholarly interest in it, we discuss the literature on the experience of nonstandard workers, on managing the nonstandard workforce, as well as that on managing the interface between standard and nonstandard workers. We analyze the themes that are raised in these literatures and point to new research questions that need to be addressed. Research on nonstandard work can enhance our understanding of the nature of work, the relationship between individuals and organizations, and how organizations and individuals can undertake these new work forms. 相似文献
98.
Jennifer M. George 《The Academy of Management Annals.》2013,7(1):439-477
Abstract In this chapter, I review contemporary theories and research on creativity in organizations. After discussing key definitional issues in this domain, I review the contemporary scholarly literature proceeding from the most molecular of perspectives focusing on within-individual processes to the more molar perspective of the collective creativity that can take place in work groups. While the within-individual process featured most prominently in the extant literature is intrinsic motivation, after a treatment of some fundamental issues surrounding the intrinsic motivation construct, I review research on conscious and unconscious thinking and positive and negative affect as key internal processes relevant to understanding creativity. Next, I focus on contextual influences on creativity including safety signals, creativity prompts, supervisors, leadership, and networks. Lastly, I focus on creativity in groups (from both an input and a process perspective). In closing, I reiterate a recurrent theme throughout the review. This is an exciting era for research on creativity in organizations with many intriguing questions awaiting future scholarly inquiry. 相似文献
99.
Randall Lutter Linda Abbott Rick Becker Chris Borgert Ann Bradley Gail Charnley Susan Dudley Alan Felsot Nancy Golden George Gray Daland Juberg Mary Mitchell Nancy Rachman Lorenz Rhomberg Keith Solomon Stephen Sundlof Kate Willett 《Risk analysis》2015,35(2):186-192
Federal and other regulatory agencies often use or claim to use a weight of evidence (WoE) approach in chemical evaluation. Their approaches to the use of WoE, however, differ significantly, rely heavily on subjective professional judgment, and merit improvement. We review uses of WoE approaches in key articles in the peer‐reviewed scientific literature, and find significant variations. We find that a hypothesis‐based WoE approach, developed by Lorenz Rhomberg et al., can provide a stronger scientific basis for chemical assessment while improving transparency and preserving the appropriate scope of professional judgment. Their approach, while still evolving, relies on the explicit specification of the hypothesized basis for using the information at hand to infer the ability of an agent to cause human health impacts or, more broadly, affect other endpoints of concern. We describe and endorse such a hypothesis‐based WoE approach to chemical evaluation. 相似文献
100.
Bill George 《经理人》2008,(10):76-77
高超的工作技能、先进的管理理念、精准的信息传达,以及明智的策略选择——所有这些特点,在我们的老板、下属和同事身上都屡见不鲜。要成为一名好的领导,光有技能和理念是远远不够的。那么,到底还需要些什么呢? 相似文献