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61.
我们大多数人都认同创新是成长的关键途径。问题是如何创新?许多企业依靠突发机遇。也就是说,他们指望某个人提出产品或服务方面的点子,然后从中获利。然而有些时候,企业必须发掘比以往更多的创意,并先于竞争对手将创意化为切实可行的产品与服务。此时,企业便不能再依靠机缘巧合了。我们需要可持续、可重复的创新方法。 相似文献
62.
Our first goal is to link empirical measures of three theoretical explanations of marital status differences to the variation in male and female standardized suicide difference coefficients SSDCs in 12 developed countries, circa 1960. We include predictors of Durkheim's social integration hypothesis, Gibbs and Martin's concept of marital status integration, and norms on suicide acceptability. All three are significantly related to variation in male and female SSDCs. The second goal is to examine how our empirical indicators impact age-specific differences in the male minus female SSDC--differences that vary by age in all 12 of our study populations. The strongest predictor of these differences is the male minus female difference in the percent married. 相似文献
63.
Amir Mokhtari Hao Pang Sofia Santillana Farakos Crystal McKenna Cecilia Crowley Vanessa Cranford April Bowen Sheena Phillips Asma Madad Donald Obenhuber Jane M. Van Doren 《Risk analysis》2023,43(2):324-338
Root cause analysis can be used in foodborne illness outbreak investigations to determine the underlying causes of an outbreak and to help identify actions that could be taken to prevent future outbreaks. We developed a new tool, the Quantitative Risk Assessment-Epidemic Curve Prediction Model (QRA-EC), to assist with these goals and applied it to a case study to investigate and illustrate the utility of leveraging quantitative risk assessment to provide unique insights for foodborne illness outbreak root cause analysis. We used a 2019 Salmonella outbreak linked to melons as a case study to demonstrate the utility of this model (Centers for Disease Control and Prevention [CDC], 2019). The model was used to evaluate the impact of various root cause hypotheses (representing different contamination sources and food safety system failures in the melon supply chain) on the predicted number and timeline of illnesses. The predicted number of illnesses varied by contamination source and was strongly impacted by the prevalence and level of Salmonella contamination on the surface/inside of whole melons and inside contamination niches on equipment surfaces. The timeline of illnesses was most strongly impacted by equipment sanitation efficacy for contamination niches. Evaluations of a wide range of scenarios representing various potential root causes enabled us to identify which hypotheses, were likely to result in an outbreak of similar size and illness timeline to the 2019 Salmonella melon outbreak. The QRA-EC framework can be adapted to accommodate any food–pathogen pairs to provide insights for foodborne outbreak investigations. 相似文献
64.
Abbott MW Volberg RA 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1999,15(3):233-242
While two-stage designs in problem gambling research are expensive and relatively difficult to execute, they have the potential to yield more accurate prevalence estimates as well as valuable additional information about gambling and problem gambling in the community. However, gains in precision are heavily dependent on the accuracy of the screening methods used and the sample sizes involved. Sound practice requires reliable information about the variances and confidence levels associated with different screens. In the spirit of contributing to the ongoing dialog about ways to improve the measurement of problem gambling, we examine several reasons to question whether the revised estimates offered by Gambino are in fact an improvement. 相似文献
65.
One of Super's most important contributions has been in explicating those developmental tasks that involve planning, exploring, and deciding, processes known collectively as readiness for career choices. The authors review existing means of conceptualizing and operationalizing the various aspects of readiness, as well as innovative practice applications that have emerged from this work. Next, selected elaborations and extensions of the readiness construct are described. Finally, future directions for theory and research on readiness are presented with a particular emphasis on the promise of considering contextual issues, motivational factors, and an expanded measurement perspective in subsequent inquiry and practice. 相似文献
66.
67.
Rachel May 《Urban Ecosystems》2004,7(1):7-15
Urban ecology is increasingly interdisciplinary, with biophysical and social scientists joining forces to study how human and built environments and processes interact with non-human nature. Humanistic disciplines that study high culture and intellectual currents also bear upon urban ecology, since cities are not simply aggregates of human and non-human factors but seats of civilization and loci of concentrated creative energy. The Russian city of St. Petersburg, which Dostoevsky called the most abstract and intentional city in the world, offers an example of the way individual acts of intellectual and artistic creation affect the energy balance of a city and its interaction with ecological forces. Such concentrated creative energy may be a key to making cities sustainable, and it should not remain outside the calculus of urban ecology. 相似文献
68.
This study assessed child behavior problems and parent-child communication behaviors during problem solving in three groups of families with adolescent children: foster families, birthfamilies with a child at risk for behavior problems, and birthfamilies with a child not at risk. Levels of positive and negative communication behaviors in the foster families were similar to those in the lower-risk families and were significantly related to foster child behavior problems. 相似文献
69.
Research was conducted to identify the events and experiences influencing the development of clinical self-confidence during the first year of client contact for beginning marriage and family therapists. Thirty-nine recent graduates of a master's degree training program participated in a semistructured interview in which they were asked to describe the influences on their clinical self-confidence. Through qualitative analysis, four event and experience categories emerged as exerting the most influence on confidence at this stage of professional development: supervision, contact with clients, contact with peers, and personal life stress. The authors recommend providing strength-focused supervision, acknowledging the effects of client contact, encouraging peer contact, and attending to personal life stress. 相似文献
70.
Identity processes and the positive youth development of African Americans: an explanatory framework
Swanson DP Spencer MB Dell'Angelo T Harpalani V Spencer TR 《New directions for youth development》2002,(95):73-99
This chapter presents Spencer's phenomenological variant of ecological systems theory, or PVEST (1995), as a conceptual framework for examining positive youth development. Contextual factors affecting racial and gender identity of African American youth are discussed, with the focus on the influence of schools and religious institutions. 相似文献