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排序方式: 共有239条查询结果,搜索用时 15 毫秒
91.
92.
Urban Ecosystems - The agricultural impacts of the Red Imported Fire Ant, Solenopsis invicta Buren 1972, have been well studied in North America, but have received less emphasis in Asia where the... 相似文献
93.
Hahn (1977) suggested a procedure for constructing prediction intervals for the difference between the means of two future samples from normal populations having equal variance, based on past samples selected from both populations. In this paper, we extend Hahn's work by constructing simultaneous prediction intervals for all pairwise differences among the means of k ≥ 2 future samples from normal populations with equal variances, using past samples taken from each of the k populations. For K = 2, this generalization reduces to Hahn's special case. These prediction intervals may be used when one has sampled the performance of several products and wishes to simultaneously as- sess the differences in future sample mean performance of these products with a predetermined overall coverage probability. The use of the new procedure is demonstrated with a numerical example. 相似文献
94.
Po-ying Amy Ho 《China Journal of Social Work》2020,13(2):190-192
95.
Physicians’ apologies for adverse medical events are acknowledged as a factor in patients’ decisions to litigate. Apology
laws which render physicians’ apologies inadmissible in court are written to encourage patient-physician communication and
to overcome the physicians’ disinclination to apologize because apologies could invite lawsuits. We present a novel model
of apologies and malpractice in order to examine whether state-level apology laws have an impact on malpractice lawsuits and
settlements. Using a difference-in-differences estimation, we find that apology laws could expedite the resolution process.
We also find that apology laws result in the greatest reduction in average payment size and settlement time in cases involving
severe patient outcomes. 相似文献
96.
Multivariate data with a sequential or temporal structure occur in various fields of study. The hidden Markov model (HMM) provides an attractive framework for modeling long-term persistence in areas of pattern recognition through the extension of independent and identically distributed mixture models. Unlike in typical mixture models, the heterogeneity of data is represented by hidden Markov states. This article extends the HMM to a multi-site or multivariate case by taking a hierarchical Bayesian approach. This extension has many advantages over a single-site HMM. For example, it can provide more information for identifying the structure of the HMM than a single-site analysis. We evaluate the proposed approach by exploiting a spatial correlation that depends on the distance between sites. 相似文献
97.
AbstractObjectives: To evaluate the association between handgrip strength and erectile dysfunction (ED) in community-dwelling older men.Methods: This cross-sectional study included 1771 participants of the Dong-gu Study. Handgrip strength was measured with a handheld dynamometer. ED was assessed with the Korean version of the International Index of Erectile Function (IIEF). ED was categorized as none to mild (IIEF-EF scores of 13–30) and moderate to severe (IIEF-EF scores of 0–12). Multivariable logistic regression was conducted with adjustment for potential confounders.Results: The proportion of men with moderate to severe ED was 48.8%. The age-adjusted ED score increased with increasing quartile of handgrip strength (11.0, 12.4, 13.4, and 14.0 in the lowest, second, third, and highest quartiles, respectively). After adjustment for potential confounders, greater handgrip strength was associated with a lower risk of ED (odds ratio (OR): 0.82 per 5?kg; 95% confidence interval (CI): 0.74–0.90). In addition, a high level of moderate to vigorous physical activity was associated with a lower risk of ED (OR: 0.75; 95% CI: 0.61–0.93).Conclusion: In this study, aging men with greater handgrip strength had a lower risk of ED. This result suggests that reduced physical functioning may contribute to ED. 相似文献
98.
Given the high population and development density in Hong Kong, building failures can result in catastrophic consequences.
It is thus worthwhile identifying those dilapidated buildings, and this explains why the Hong Kong government has considered
launching a mandatory building inspection scheme in the city. Apart from the measurement of building safeness, however, it
is equally important to explore the major determinants of the safety performance of buildings. Such information can help the
government and other related organizations to rationalize their subsidies offered for building improvement and to make more
informed strategies of urban regeneration in Hong Kong. To this end, the safety performance of 429 private multi-storey residential
buildings was measured in this study using the Building Safety and Conditions Index developed by The University of Hong Kong.
It was then followed by an explanatory analysis which found that older buildings were less safe than large, modern buildings.
More importantly, the co-existence of a property management agent and a statutory owners’ association delivered the best building
safety performance, and in this respect was the optimum building management regime for private multi-storey buildings in Hong
Kong. These findings pose significant policy implications for building safety and urban regeneration in Hong Kong. 相似文献
99.
Poverty was not a major issue in Hong Kong before the 1990s. After the Asian financial crisis, the government admitted that poverty was growing and demanded attention. While passive assistance was maintained, increasing emphasis was placed on capacity building to promote self-reliance. The Child Development Fund was introduced to combat intergenerational poverty by developing children's capacity and assets, especially through mentorship. On the basis of published data and interviews with social workers, the project should be considered a success, but it was not without problems. The contribution of social workers to the project was significant but received little government recognition. 相似文献
100.
Petula Sik Ying Ho 《Journal of sex research》2013,50(4):338-349
The study explores the life of married women who are being described as having “good,” “normal,” “blessed” sexuality. The case of si-nais (housewives) in Hong Kong shows that we can never assume that married women (or any social category) are privileged by virtue of their status on the sexual hierarchy. The blessings of social respectability apparently enjoyed by these women may work to enable or hinder women's expression of their erotic desires and sexual fulfillment, depending on their special social circumstances. These women's imagination and experience of good sex is composed of a multitude of components. Women may feel good because they can achieve other psychological and social aims that are important in their lives (which could be related to the maintenance of marriage or the peace of the family). Women may feel good because of the erotic satisfaction that they derive from different pursuits including interests, leisure or other intimate relationships, rather than sexual fulfillment in terms of orgasm or physical pleasure. Women may reformulate their pleasures variously at different stages of their lives. Social respectability, orgasm, emotional intimacy, or any other specific element, may all enter or leave the formula for good sex. 相似文献