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排序方式: 共有1110条查询结果,搜索用时 140 毫秒
41.
Kamala B Wilson ML Hasselberg M 《International journal of injury control and safety promotion》2011,18(4):305-311
The objective was to determine patterns and circumstances of childhood falls in a low-income setting in Dar es Salaam, Tanzania. This cross sectional study is based on a household survey conducted in July 2009. A total of 3927 children up to age 18 from 1928 households in 15 sampled wards were surveyed through a structured questionnaire. The current study includes information regarding fall occurrence, socio-demographic and economic factors. Data were analysed using chi-square, t-test and logistic regression. Male children had 42% higher odds of falls compared to females, and rural residents had more than two times higher odds compared to urban residents. Falls occurred three times more among age group 1-4 and two times more among age group 5-9 compared to those between 15 and 18 years. Most falls occurred outdoors (62%) while playing (51%) with boys being over-represented. Females and children aged 1-4 years fell more from stairs whereas most infants fell from furniture. Male gender, younger age groups and rural residence were significant factors for fall injuries. The circumstances in which these falls occur also differ significantly. Intervention efforts should emphasise these patterns. 相似文献
42.
The purpose of this article is to determine market orientation’s relative impact on small-business performance, compared to
other influences, in an integrated model using longitudinal data. Contrary to expectations based on the management literature,
the results indicate weak causal relationships between market environment, small-firm structure, and small-firm strategy.
The results further indicate weak influences of these variables, but strong and consistent influences of market orientation,
on various measures of small-firm performance. Contrary to expectations based on business policy literature, relative product
quality and new product success were not significant influences on profitability, perhaps due to the significant influence
of market orientation on these variables. In addition, although increases in growth/share had a significant short-term influence
on increases in profitability, high levels of previous years’ firm growth/share had a negative influence on current profitability.
The previous year’s level of firm coordinating systems and market competitive intensity has a significant impact on the level
of small-firm market orientation. 相似文献
43.
44.
Julie Carlson Ginger Zhe Jin Matthew Jones Jason O’Connor Nathan Wilson 《Review of Industrial Organization》2017,50(4):487-507
In 2015, the Federal Communications Commission (FCC) imposed common carriage regulation—so-called Title II requirements—on previously unregulated broadband Internet service providers. The regime shift was premised on the FCC’s findings that such rules had demonstrably yielded economic gains. This paper evaluates the FCC’s empirical arguments and finds them uncompelling. Adjustments for inflation or general economic trends eliminate the effects cited by the FCC. Moreover, contrary to the Commission’s assessment, mobile services and broadband markets have shown notable growth in response to deregulatory events that reduce Title II requirements. 相似文献
45.
This paper estimates the magnitude of the Balassa-Samuelson effect for Greece. We calculate the effect directly, using sectoral
national accounts data, which permits estimation of total factor productivity (TFP) growth in the tradeables and nontradeables
sectors. Our results suggest that it is difficult to produce one estimate of the BS effect. Any particular estimate is contingent
on the definition of the tradeables sector and the assumptions made about labour shares. Moreover, there is also evidence
that the effect has been declining through time as Greek standards of living have caught up on those in the rest of the world
and as the non-tradeables sector within Greece catches up with the tradeables.
相似文献
Jim MalleyEmail: |
46.
Stewart Jones David Johnstone Roy Wilson 《Journal of Business Finance & Accounting》2017,44(1-2):3-34
Corporate bankruptcy prediction has attracted significant research attention from business academics, regulators and financial economists over the past five decades. However, much of this literature has relied on quite simplistic classifiers such as logistic regression and linear discriminant analysis (LDA). Based on a large sample of US corporate bankruptcies, we examine the predictive performance of 16 classifiers, ranging from the most restrictive classifiers (such as logit, probit and linear discriminant analysis) to more advanced techniques such as neural networks, support vector machines (SVMs) and “new age” statistical learning models including generalised boosting, AdaBoost and random forests. Consistent with the findings of Jones et al. ( 2015 ), we show that quite simple classifiers such as logit and LDA perform reasonably well in bankruptcy prediction. However, we recommend the use of “new age” classifiers in corporate bankruptcy modelling because: (1) they predict significantly better than all other classifiers on both the cross‐sectional and longitudinal test samples; (2) the models may have considerable practical appeal because they are relatively easy to estimate and implement (for instance, they require minimal researcher intervention for data preparation, variable selection and model architecture specification); and (3) while the underlying model structures can be very complex, we demonstrate that “new age” classifiers have a reasonably good level of interpretability through such metrics as relative variable importances (RVIs). 相似文献
47.
48.
Bryan C. McCannon Colleen Tokar Asaad Mark Wilson 《Journal of Economics and Finance》2016,40(3):590-606
Financial transactions sometimes occur in an environment where third-party enforcement is lacking. Behavioral explanations typically allude to the social preferences, where an individual’s utility is directly affected by another’s outcome, as the driver of the trusting investments and reciprocal returns. We hypothesize that, in part, these decisions are determined by an individual’s financial literacy and overconfidence in one’s knowledge. Experimental evidence is coupled with an innovative financial literacy assessment, which measures general competence, numeracy skills, and overconfidence in one’s knowledge. Results indicate that overconfidence is a significant determinant of behavior. Specifically, overconfident individuals make larger contributions in the investment game. We also document that there is an escalated effect in overconfident individuals who are also exhibit risk loving preferences. 相似文献
49.
Literature on fiscal federalism has long debated whether inter-jurisdictional competition between subnational units encourages a “race to the bottom”, with competition to attract mobile capital leading to lower taxation and expenditure, and, consequently, the under-provision of public goods. The principal concerns of this literature have been taxation and expenditure, but the ability of state governments to acquire land for industry is also critical in the context of subnational competition. In this article, the authors ask how Indian state governments resolve the tensions arising from their dual role as both wooer and regulator of capital, as they simultaneously facilitate land acquisition and engage with movements that challenge it. The authors demonstrate that there is no simple “race to the bottom”. Inter-state competition has not produced a simple equation in favour of capital and a side-lining of the concerns of those displaced. Subnational approaches to land acquisition must be understood within local political, social and economic contexts. 相似文献
50.
Keith Wilson 《Leisure Studies》2013,32(3):174-185
The phenomenon of mass fun running in Britain dates from the early 1980s and displays much of the ideology of the ‘Sport For All’ campaign. While running as an activity can be viewed as a natural pastime, the notion of mass jogging, as exemplified by the Great North Run and the London Marathon, is more difficult to comprehend and requires further analysis. This paper argues that the mass fun run is an example of the ‘Society of Spectacle’: a commercial creature which is heavily reliant on media coverage and sponsorship and which serves as an endorsement and symbol of postmodern society. The media stresses the ‘tradition’ of such events and uses them as images of human decency and national unity. Yet the relationship between audience, participant and spectacle remains fragile and dependent upon commercial considerations. 相似文献