建设中国最先进的晶圆芯片厂

有朋自远方来,不亦乐乎。这句流传千年的名言告诉我们：中华民族是礼仪之邦,中国人民热情友好,珍视情谊!     

“We thought it would be easy”: recruitment challenges,successes and best practices for low-income couple populations

Recruitment challenges present ongoing struggles for social science professionals. Especially problematic are recruiting endeavors when target populations are highly stressed, highly mobile, and are comprised of couples rather than individuals. Included in this study is a rationale supporting the need to study recruitment challenges coupled with a literature review discussing recent recruitment research summaries. Based upon a Delphi-type discussion with couples relationship education (CRE) experts, our team constructed a qualitative study to examine recruitment challenges in low-income CRE programs. Fourteen interviews were conducted with “successful” program leaders identified by federal regional managers within the Administration for Children and Families (ACF). Data were analyzed, and results detailing four main “challenge” themes, four “success” themes, and a seven-step best practice model are presented.     

A Health Risk Benchmark for the Neurologic Effects of Styrene: Comparison with NOAEL/LOAEL Approach

Benchmark dose (BMD) analysis was used to estimate an inhalation benchmark concentration for styrene neurotoxicity. Quantal data on neuropsychologic test results from styrene-exposed workers [Mutti et al. (1984). American Journal of Industrial Medicine, 5, 275-286] were used to quantify neurotoxicity, defined as the percent of tested workers who responded abnormally to > or = 1, > or = 2, or > or = 3 out of a battery of eight tests. Exposure was based on previously published results on mean urinary mandelic- and phenylglyoxylic acid levels in the workers, converted to air styrene levels (15, 44, 74, or 115 ppm). Nonstyrene-exposed workers from the same region served as a control group. Maximum-likelihood estimates (MLEs) and BMDs at 5 and 10% response levels of the exposed population were obtained from log-normal analysis of the quantal data. The highest MLE was 9 ppm (BMD = 4 ppm) styrene and represents abnormal responses to > or = 3 tests by 10% of the exposed population. The most health-protective MLE was 2 ppm styrene (BMD = 0.3 ppm) and represents abnormal responses to > or = 1 test by 5% of the exposed population. A no observed adverse effect level/lowest observed adverse effect level (NOAEL/LOAEL) analysis of the same quantal data showed workers in all styrene exposure groups responded abnormally to > or = 1, > or = 2, or > or = 3 tests, compared to controls, and the LOAEL was 15 ppm. A comparison of the BMD and NOAEL/LOAEL analyses suggests that at air styrene levels below the LOAEL, a segment of the worker population may be adversely affected. The benchmark approach will be useful for styrene noncancer risk assessment purposes by providing a more accurate estimate of potential risk that should, in turn, help to reduce the uncertainty that is a common problem in setting exposure levels.     

War-related mental health problems of today's veterans: new clinical awareness

1. Veterans of the military conflicts in Iraq and Afghanistan may have been exposed to significant psychological stressors, resulting in mental and emotional disorders. 2. Posttraumatic stress disorder (PTSD) is characterized by symptoms in three domains: reexperiencing the trauma, avoiding stimuli associated with the trauma, and symptoms of increased autonomic arousal. 3. Treatment of PTSD often requires both psychological and pharmacological interventions. 4. In addition to PTSD, other mental disorders may be precipitated or worsened by exposure to combat, including depression, anxiety, psychosis, and substance abuse.     

An investigation of the endowment effect using a factorial design

The endowment effect is interpreted as evidence that we may ‘over value’ objects we already own. In this study we introduce a novel approach to investigating the endowment effect, the factorial survey design, which enables manipulation of variables potentially influencing the endowment effect. We consider the value and uniqueness of the possession, whether it is a gift from a close friend and whether the trade is with a stranger. We find a higher endowment effect for possessions received as gifts from a close friend and this effect is entirely due to responses from women. Furthermore, we find significantly higher endowment effects for valuable possessions. Our results suggest there is ample scope for broadening the range of methods applied to this area of economic research.     

A New Instrument to Measure Cognitive Distortions in Video Lottery Terminal Users: The Informational Biases Scale (IBS)

This paper reports on the development of a new scale, the Informational Biases Scale (IBS), to measure cognitive distortions such as the illusion of control, gambler's fallacy,illusory correlations, and the availability heuristic in video lottery terminal (VLT) players. Ninety-six VLT players recruited from bars in New Brunswick took part in the study. Their average (lifetime) South Oaks Gambling Screen score was in the probable pathological gambler range. The 25-item IBS was shown to have good internal consistency reliability. An exploratory principal components/factor analysis revealed the variability of the IBS to be accounted for by mainly one factor. The construct validity of the instrument was supported by the finding that IBS scores were uniquely determined by measures of gambling addiction and negative affect. The IBS should prove useful in both research and clinical settings involving VLT gamblers.