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991.
Anuj Mubayi Author Vitae Priscilla E. Greenwood Author Vitae Paul J. Gruenewald Author Vitae 《Socio》2010,44(1):45-56
Alcohol consumption is a function of social dynamics, environmental contexts, individuals' preferences and family history. Empirical surveys have focused primarily on identification of risk factors for high-level drinking but have done little to clarify the underlying mechanisms at work. Also, there have been few attempts to apply nonlinear dynamics to the study of these mechanisms and processes at the population level. A simple framework where drinking is modeled as a socially contagious process in low- and high-risk connected environments is introduced. Individuals are classified as light, moderate (assumed mobile), and heavy drinkers. Moderate drinkers provide the link between both environments, that is, they are assumed to be the only individuals drinking in both settings. The focus here is on the effect of moderate drinkers, measured by the proportion of their time spent in “low-” versus “high-” risk drinking environments, on the distribution of drinkers.A simple model within our contact framework predicts that if the relative residence times of moderate drinkers are distributed randomly between low- and high-risk environments then the proportion of heavy drinkers is likely to be higher than expected. However, the full story even in a highly simplified setting is not so simple because “strong” local social mixing tends to increase high-risk drinking on its own. High levels of social interaction between light and moderate drinkers in low-risk environments can diminish the importance of the distribution of relative drinking times on the prevalence of heavy drinking. 相似文献
992.
993.
There are some aspects of the European RFEC and its implementation today that could benefit from increased harmonisation; there are others in which substantial accommodation to local, national or regional circumstances and preferences is desirable or required. 相似文献
994.
995.
Tucker J. Marion John H. Friar Timothy W. Simpson 《Journal of Product Innovation Management》2012,29(4):639-654
New product development practices (NPD) have been well studied for decades in large, established companies. Implementation of best practices such as predevelopment market planning and cross‐functional teams have been positively correlated with product and project success over a variety of measures. However, for small new ventures, field research into ground‐level adoption of NPD practices is lacking. Because of the risks associated with missteps in new product development and the potential for firm failure, understanding NPD within the new venture context is critical. Through in‐depth case research, this paper investigates two successful physical product‐based early‐stage firms' development processes versus large established firm norms. The research focuses on the start‐up adoption of commonly prescribed management processes to improve NPD, such as cross‐functional teams, use of market planning during innovation development, and the use of structured processes to guide the development team. This research has several theoretical implications. The first finding is that in comparing the innovation processes of these firms to large, established firms, the study found several key differences from the large firm paradigm. These differences in development approach from what is prescribed for large, established firms are driven by necessity from a scarcity of resources. These new firms simply did not have the resources (financial or human) to create multi‐ or cross‐functional teams or organizations in the traditional sense for their first product. Use of virtual resources was pervasive. Founders also played multiple roles concurrently in the organization, as opposed to relying on functional departments so common in large firms. The NPD process used by both firms was informal—much more skeletal than commonly recommended structured processes. The data indicated that these firms put less focus on managing the process and more emphasis on managing their goals (the main driver being getting the first product to market). In addition to little or no written procedures being used, development meetings did not run to specific paper‐based deliverables or defined steps. In terms of market and user insight, these activities were primarily performed inside the core team—using methods that again were distinctive in their approach. What drove a project to completion was relying on team experience or a “learn as you go approach.” Again, the driver for this type of truncated market research approach was a lack of resources and need to increase the project's speed‐to‐market. Both firms in our study were highly successful, from not only an NPD efficiency standpoint but also effectiveness. The second broad finding we draw from this work is that there are lessons to be learned from start‐ups for large, established firms seeking ever‐increasing efficiency. We have found that small empowered teams leading projects substantial in scope can be extremely effective when roles are expanded, decision power is ground‐level, and there is little emphasis on defined processes. This exploratory research highlights the unique aspects of NPD within small early‐stage firms, and highlights areas of further research and management implications for both small new ventures and large established firms seeking to increase NPD efficiency and effectiveness. 相似文献
996.
Richard J. Cebula Vikas Agrawal Robert Boylan Donald Horner 《Applied economics letters》2016,23(3):167-170
This brief exploratory empirical note seeks to identify key determinants of geographic differentials in the percentage growth rate of state-level employment in the US, with the primary focus being on the percentage net growth rate in the number of small firms (i.e., those with fewer than 20 employees) in each state, where this variable serves as a de facto reflection of ‘entrepreneurship’. In the interest of identifying other key factors that influence state-level employment growth rates, the effective income tax rate in each state, quality of life elements and labour market considerations are also included in the analysis. The study period runs from the year 2000 to the year 2007, ending just prior to the ‘Great Recession’. The estimation results imply that the state-level employment growth rate in the US was an increasing function of the percentage net growth rate in the number of small firms in each state. Thus, it appears that the small firms growth rate may in fact be a significant source. 相似文献
997.
We revisit the interest rate pass-through effect using weekly retail banking data from May 2006 to March 2010. Our choice of data avoids caveats of previous studies concerning excessive data aggregation and the estimation of how fast changes in benchmark interest rates impact those charged on short-term loans in Brazil. Our analysis focuses on four large retail banks – two of them privately owned and run, two of them government-controlled – before and after September 2008. They account for 60% of the total credit supplied by retail banks. Results indicate that government control over two of the largest banks, supposedly an asset for crisis management, may have had higher welfare costs than assumed. We find no evidence of asymmetry in adjustments of retail rates charged by private and government-controlled banks. 相似文献
998.
Stephen J. Hunt 《Leisure Studies》2013,32(4):387-403
This paper explores the increasingly popular research area of ‘living history’ – the presentation of an historical period by live actors who portray and ‘live out’ the conditions of a particular time and place, largely through public events and other forms of staged reconstruction. While the topic might be analysed from various approaches, the paper endeavours to focus upon ‘living history’ largely as a ‘serious leisure’ pursuit, enquiring as to who participates and why. The paper is founded upon a survey of one re‐enactment society in the UK which depicts the Civil War in the USA. As one of the largest of such societies, the American Civil War Society (ACWS) not only provides a fine example of ‘living history’, but one largely outside of its immediate historical and cultural context. The paper argues that re‐enacted events, certainly in the case of a male‐dominated ‘living history’ society, are not primarily an educational exercise. Rather, they are meaningful for the individuals involved, sustaining and enhancing their life‐style interests and a ‘serious’ hobby through camaraderie, collective involvement, and a subjective understanding of authenticity. 相似文献
999.
1000.
Slovakia's transition history long paralleled that of the Czech Republic, but the former adopted bold new reforms early in this decade. This article is a comparative treatment of fiscal decentralisation since 1993 and more recent reforms of public administration, the two efforts representing the foundation of the New System. Czech experience is invoked simply to provide an appropriate benchmark for the evaluation of Slovakia's New System introduced in 2004, including the 19% ‘flat tax’ and other striking measures in local public finance. The second focus of the article is on the macroeconomic impact of the New System. It is too early to perceive what its long-term effects will be, so this treatment is more tentative. But because one would like to know whether Slovakia's return to an economic growth path is actually a result of the New System and whether this recent growth will persist, these issues are given some consideration. 相似文献