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排序方式: 共有169条查询结果,搜索用时 15 毫秒
41.
Sophie Staniszewska Ade Adebajo Rosemary Barber Peter Beresford Louca‐Mai Brady Jo Brett Jim Elliott David Evans Kirstie L. Haywood David Jones Carole Mockford Mary Nettle Diana Rose Tracey Williamson 《International Journal of Consumer Studies》2011,35(6):628-632
While patient and public involvement (PPI) in health and social care research has progressed successfully in the last decade, a range of difficulties with the evidence base exist, including poor understanding of the concept of impact, limited theorization and an absence of quantitative impact measurement. In this paper, we argue that a paradigm change towards robust measurement of the impact of involvement in research is needed to complement qualitative explorations. We argue that service users should be collaboratively involved in the conceptualization, theorization and development of instruments to measure PPI impact. We consider the key advantages measurement would bring in strengthening the PPI evidence base through a greater understanding of what works, for whom, in what circumstances and why. 相似文献
42.
Although the soap opera as a television genre has consistently captured the imagination of millions of people around the world, surprisingly little has been written about it in the marketing literature. Understanding the consumption imagery in soaps may allow marketers to assess the relevance of product placement for their promotion strategy better, as well as providing valuable insight into the consumption habits of their considerable viewing audiences. Data were collected through content analysis from two soap operas, one in the USA and one in New Zealand. The results indicated a high level of consumption imagery, including brand references. Furthermore significant differences in the types of product and the emotional outcome of product use were found between the countries. 相似文献
43.
This paper examines whether structural unemployment increased in Australia over the last two decades. A simple regression model has been considered for testing the hypothesis of increase in unemployment of several segment of the labour force over time. Six dimensions of the labour force, namely age, sex, region, duration of unemployment, occupation and industry, have been taken into account. Analysis of the regression results reveals that the structural unemployment problem is substantial with respect to age, sex, duration of unemployment occupation and industry. Regarding region the evidence for structural symptom is not very strong. 相似文献
44.
Optimal nonlinear taxes for families 总被引:2,自引:0,他引:2
Craig Brett 《International Tax and Public Finance》2007,14(3):225-261
45.
This article seeks to address some lingering debates within sustainability studies by revealing the connections between renewable energy,consumption and sustainability.Using data from 30 OECD countries,the article amines the connections via regression and geospatial analysis Findings from the quantitative analysis indicate that about 50% of the variation in sustainability is accounted for by the degree of renewables consumption.The geospatial analysis visually illustrates the intimate connections between the two variables.Theoreticallv,renewable energy,relates to sustainability in three dimensions.The first dimension is economic.Relying on traditional fossil fuels eventually will bring our economy to a stop.Renewable energies,however,are able to secure our energy supply into an indefinite future.The second dimension links to ethics.To leave an intact planet to future generations is a moral responsibility of our generation.The current energy supply system is built on depletion of natural resources,while the sources of renewable energy are vast and constantlv replenished The last dimension is ecologic.How to allocate a porper apportionment of the global hiosphere between humankind and the other life on the earth is a critical issue related to sustainability.By using renewable energv,we can greatly reduce our impact on biodiversity and therefore strike a balance between humankind and other life.Overall the research suggests that developing renewables can and in many cases does sustain a nation's economic growth while simultaneously protecting the environment.It is a win-win situation.This finding undoubtedly points out a practical and realistic path for sudtainable development. 相似文献
46.
Cognitive heuristics, biases, and overconfidence have been suggested as an explanation for entrepreneurial entry. Nevertheless, empirical research on the subject has produced mixed findings and has under-explored the cognitive mechanisms leading to overconfidence in entrepreneurial settings. In two within-subject experiments, we focus on three cognitive heuristics—reference point framing, outcome salience framing, and anchoring in conjunctive events—and examine their effects on perceived risk, confidence, required and estimated probabilities of success, and the decision to start a new venture. Our findings show that reference point framing and outcome salience framing affect the decision to enter directly and indirectly via risk perception, but do not affect confidence. In addition, the effect of anchoring is contingent on the congruence between its semantic and its numeric influences. Overconfidence only obtains when the numeric and semantic influences of anchoring are aligned and aimed at enhancing the salience of potential positive outcomes, i.e., through high probabilities of success. 相似文献
47.
The results of recent research on the informational efficiency of the US live cattle futures market are ambiguous. Moreover, simultaneous, rational expectations models of spot and futures markets for non-storables are lacking in the literature. This paper addresses both issues: by developing a simultaneous rational expectations model of the US live cattle market, with functional relationships for short hedgers, long hedgers, net short speculators and consumers, the paper employs a wider information set than in previous research and it thus provides a more powerful test of the efficient market hypothesis (EMH). Tests indicate the possible presence of non-linearities in the long hedging and net short speculation equations.
The results suggest first, that there is support for Working's hypotheses of selective and operational hedging, for short and long hedgers respectively, second that speculators may be noise traders or risk-loving (although the non-linear version of the speculation function partially corrects this anomaly), and third that beef is a normal good while corn is a complementary input. Time-varying volatility is represented as an EGARCH ( p , q ) process. Post-sample, this model does not significantly outperform the futures price in spot price forecasting, implying non-rejection of the EMH. 相似文献
The results suggest first, that there is support for Working's hypotheses of selective and operational hedging, for short and long hedgers respectively, second that speculators may be noise traders or risk-loving (although the non-linear version of the speculation function partially corrects this anomaly), and third that beef is a normal good while corn is a complementary input. Time-varying volatility is represented as an EGARCH ( p , q ) process. Post-sample, this model does not significantly outperform the futures price in spot price forecasting, implying non-rejection of the EMH. 相似文献
48.
49.
Recent measures to reduce Medicare spending include the use of competitive bidding in determining reimbursement prices. Several competitive bidding experiments have been conducted by the Centers for Medicare and Medicaid Services (CMS) to determine reimbursement prices. This paper investigates the use of competitive bidding to set reimbursement prices for durable medical equipment, prosthetics, orthotics, and supplies. First, the competitive bidding process is examined on a theoretical level. It is shown that the CMS competitive bidding process (auction) is inefficient, leads to price increases, and may cause decreases in the quality of services. Next, data supporting the theoretical predictions are presented. Finally, we suggest that a descending variant of the Ausubel, Cramton, and Milgrom (2006) clock-proxy auction be used. 相似文献
50.
We show that abnormal returns to analysts’ recommendations stem from both the ratings levels assigned and the changes in those ratings. Conditional on the ratings change, buy and strong buy recommendations have greater returns than do holds, sells, and strong sells. Conditional on the ratings level, upgrades earn the highest returns and downgrades the lowest. We also find that both ratings levels and changes predict future unexpected earnings and the associated market reaction. Our results imply that 1) investment returns may be enhanced by conditioning on both recommendation levels and changes; 2) the predictive power of analysts’ recommendations reflects, at least partially, analysts’ ability to generate valuable private information; and 3) some inconsistency exists between analysts’ ratings and the formal ratings definitions issued by securities firms. 相似文献