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排序方式: 共有123条查询结果,搜索用时 15 毫秒
41.
Using the behavioral model for health care use and unique data from the Mexican migration project, we explore the factors
associated with hospital use among Mexican male migrants to the US. Twenty-eight percent of the respondents reported receiving
healthcare from a hospital. In addition to established enabling factors of time in the US and English language ability, this
research points to the importance of family social networks as enabling hospital health care use among migrants. Migrants
with more ties to family members with migration experience have an increased likelihood of using emergency room healthcare.
The research adds to the body of literature by providing evidence that ties to individuals with US migration experience increases
migrants’ probability of accessing healthcare at hospitals. 相似文献
42.
卡塞维亚·科斯塔 《深圳大学学报(人文社会科学版)》2010,27(2)
设计在巴塞罗那的生活中具有重要作用.在过去的几百年当中,设计是促进巴塞罗那产生创造力的背后推动力.
大约一百年前,我们在巴塞罗那开展了总体设计,比较著名的设计师有高迪以及和他同期的设计师. 相似文献
43.
44.
This paper proposes an iterated greedy algorithm for solving the blocking flowshop scheduling problem for makespan minimization. Moreover, it presents an improved NEH-based heuristic, which is used as the initial solution procedure for the iterated greedy algorithm. The effectiveness of both procedures was tested on some of Taillard’s benchmark instances that are considered to be blocking flowshop instances. The experimental evaluation showed the efficiency of the proposed algorithm, in spite of its simple structure, in comparison with a state-of-the-art algorithm. In addition, new best solutions for Taillard’s instances are reported for this problem, which can be used as a basis of comparison in future studies. 相似文献
45.
Too Big to Learn: The Effects of Major Acquisition Failures on Subsequent Acquisition Divestment
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We examine whether firms learn from their major acquisition failures. Drawing from a threat‐rigidity theoretical framework, we suggest that firms do not learn from their major acquisition failures. Furthermore, we hypothesize that host‐country experience reinforces the negative effects of major acquisition failures. Our research hypotheses are tested using an event history analysis of 741 acquisitions undertaken by French listed and non‐listed firms in the USA between January 1988 and December 2008. We use failure divestment (divestment resulting from acquisition failure) as a proxy for acquisition performance. Consistent with our theoretical framework, we find that major acquisition failures have a negative impact on future acquisition performance. Furthermore, we find that such negative effects are reinforced by firms’ host‐country experience. 相似文献
46.
47.
In this paper we perform inference on the effect of a treatment on survival times in studies where the treatment assignment is not randomized and the assignment time is not known in advance. Two such studies are discussed: a heart transplant program and a study of Swedish unemployed eligible for employment subsidy. We estimate survival functions on a treated and a control group which are made comparable through matching on observed covariates. The inference is performed by conditioning on waiting time to treatment, that is, time between the entrance in the study and treatment. This can be done only when sufficient data are available. In other cases, averaging over waiting times is a possibility, although the classical interpretation of the estimated survival functions is lost unless hazards are not functions of waiting time. To show unbiasedness and to obtain an estimator of the variance, we build on the potential outcome framework, which was introduced by J. Neyman in the context of randomized experiments, and adapted to observational studies by D.B. Rubin. Our approach does not make parametric or distributional assumptions. In particular, we do not assume proportionality of the hazards compared. Small sample performance of the estimator and a derived test of no treatment effect are studied in a Monte Carlo study. 相似文献
48.
Xavier L. Guadalupe-Diaz Jonathan Yglesias 《Journal of gay & lesbian social services》2013,25(4):465-485
Legal recourse is a vital avenue for many domestic violence victims. For lesbian, gay, and bisexual (LGB) people, these laws have historically been heterosexist. Considering the many states that are now inclusive of same-gender relationships, an existing data set was utilized to examine the influence of sociodemographic predictors on the perceptions of domestic violence law among LGB. Our findings illustrate that nonwhite LGB and those who have negative perceptions of law enforcement have the most negative perceptions of domestic violence legal protections as they apply to same-gender relationships. These findings have implications for service providers, advocacy and outreach organizations, and future research exploring the impact perceptions of legal avenues have on LGB victims. 相似文献
49.
Damien Brevers Axel Cleeremans Antoine Bechara Max Greisen Charles Kornreich Paul Verbanck Xavier Noël 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2013,29(1):119-129
Lack of self-awareness of one’s decisions remains an understudied and elusive topic in the addiction literature. The present study aimed at taking a first step towards addressing this difficult subject through the use of a combination of behavioral procedures. Here, we explored the association between a metacognitive process (the ability to reflect and evaluate the awareness of one’s own decision) and poor performance on the Iowa Gambling Task (IGT) in a group of pathological gamblers (PG; n = 30), and in a comparison group (n = 35). This metacognitive process was assessed during the IGT with the post-decision wagering procedure, while a number of potential confounds (i.e., reward/loss sensitivity, dual-tasking) were controlled for. Results showed that: (1) Initial performance enhancement of the control group on IGT occurred without explicit knowledge of the task, thus confirming its implicit character; (2) compared to controls, performance of PG on the IGT failed to increase during the task; (3) taking into account increased reward sensitivity and decreased loss sensitivity as well as poorer dual-tasking in pathological gamblers, PG tended to exhibit a bias in evaluating their own performance on the IGT by maximizing their wagers independently of selecting advantageous decks. Our findings suggest that biased metacognition may affect pathological gamblers, leading to disadvantageous post-decision wagering, which is in turn linked to impaired decision making under ambiguity. Perhaps this deficit reflects the impaired insight and self-awareness that many addicts suffer from, thus providing a novel approach for capturing and measuring this impairment, and for investigating its possible causes. 相似文献
50.
The problem of equipment selection for a production line is considered. Each piece of equipment, also called unit or block, performs a set of operations. All necessary operations of the line and all available blocks with their costs are known. The difficulty is to choose the most appropriate blocks and group them into (work)stations. There are some constraints that restrict the assignment of different blocks to the same station. Two combinatorial approaches for solving this problem are suggested. Both are based on a novel concept of locally feasible stations. The first approach combinatorially enumerates all feasible solutions, and the second reduces the problem to search for a maximum weight clique. A boolean linear program based on a set packing formulation is presented. Computer experiments with benchmark data are described. Their results show that the set packing model is competitive and can be used to solve real-life problems. 相似文献