全文获取类型
收费全文 | 51篇 |
免费 | 3篇 |
专业分类
管理学 | 2篇 |
人口学 | 10篇 |
丛书文集 | 1篇 |
理论方法论 | 5篇 |
综合类 | 1篇 |
社会学 | 25篇 |
统计学 | 10篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2021年 | 2篇 |
2018年 | 2篇 |
2017年 | 2篇 |
2016年 | 4篇 |
2015年 | 3篇 |
2014年 | 1篇 |
2013年 | 7篇 |
2012年 | 2篇 |
2011年 | 4篇 |
2010年 | 5篇 |
2009年 | 1篇 |
2007年 | 2篇 |
2004年 | 1篇 |
2003年 | 1篇 |
2002年 | 1篇 |
2001年 | 1篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1985年 | 1篇 |
1981年 | 1篇 |
1978年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有54条查询结果,搜索用时 15 毫秒
31.
Koji Ueno 《The Sociological quarterly》2010,51(3):484-510
Previous research has demonstrated that people who report same‐sex experience tend to have poorer mental health than heterosexual people in adolescence and adulthood. Yet, little is known about how same‐sex experience is associated with changes in mental health between the two life stages. Using data from the National Longitudinal Study of Adolescent Health (n = 12,056), this study assesses patterns of same‐sex experience between adolescence and young adulthood and their consequences for changes in depressive symptoms, binge drinking, and drug use. Compared to people with no same‐sex experience, those who report such experience only in adolescence show greater levels of mental health problems in adolescence, but they do not show any worse mental health changes during the transition into young adulthood. People who develop their first same‐sex experience in young adulthood, however, tend to show worse changes, consistent with the argument that entry into a stigmatized role is psychologically harmful. Among females, those who report same‐sex experience in both life stages also show worse mental health changes, indicating that the continuity in minority status contributes to their cumulative disadvantage. However, these differences are modest, and substantial amounts of variations in mental health changes are observed within each group. Findings are used to address the dynamic aspect of mental health disparity linked to sexuality. 相似文献
32.
In this paper, we propose an estimator of the Lyapunov exponent of the skeleton for chaotic time series with dynamic noise and prove the consistency of the estimator under some assumptions. 相似文献
33.
Theory and Decision - In cooperative game theory with transferable utilities (TU games), there are two well-established ways of redistributing Shapley value payoffs: using egalitarian Shapley... 相似文献
34.
35.
Koji Tsukuda 《统计学通讯:理论与方法》2013,42(22):4734-4741
This article discusses the asymptotic theory of Taguchi’s natural estimators of the signal to noise ratio (SNR) for dynamic robust parameter design. Three asymptotic properties are shown. First, two natural estimators of the population SNR are asymptotically equivalent. Second, both of these estimators are consistent. Finally, both of these estimators are asymptotically normally distributed. 相似文献
36.
Estimation of Benchmark Dose as the Threshold Amount of Alcohol Consumption for Blood Pressure in Japanese Workers 总被引:1,自引:0,他引:1
Yasushi Suwazono Kouichi Sakata Mitsuhiro Oishi Yasushi Okubo Mirei Dochi Etsuko Kobayashi Teruhiko Kido Koji Nogawa 《Risk analysis》2007,27(6):1487-1495
In order to determine the threshold amount of alcohol consumption for blood pressure, we calculated the benchmark dose (BMD) of alcohol consumption and its 95% lower confidence interval (BMDL) in Japanese workers. The subjects consisted of 4,383 males and 387 females in a Japanese steel company. The target variables were systolic, diastolic, and mean arterial pressures. The effects of other potential covariates such as age and body mass index were adjusted by including these covariates in the multiple linear regression models. In male workers, BMD/BMDL for alcohol consumption (g/week) at which the probability of an adverse response was estimated to increase by 5% relative to no alcohol consumption, were 396/315 (systolic blood pressure), 321/265 (diastolic blood pressure), and 326/269 (mean arterial pressures). These values were based on significant regression coefficients of alcohol consumption. In female workers, BMD/BMDL for alcohol consumption based on insignificant regression coefficients were 693/134 (systolic blood pressure), 199/90 (diastolic blood pressure), and 267/77 (mean arterial pressure). Therefore, BMDs/BMDLs in males were more informative than those in females as there was no significant relationship between alcohol and blood pressure in females. The threshold amount of alcohol consumption determined in this study provides valuable information for preventing alcohol-induced hypertension. 相似文献
37.
A loss function proposed by Wasan (1970) is well-fitted for a measure of inaccuracy for an estimator of a scale parameter
of a distribution defined onR
+=(0, ∞). We refer to this loss function as the K-loss function. A relationship between the K-loss and squared error loss functions
is discussed. And an optimal estimator for a scale parameter with known coefficient of variation under the K-loss function
is presented. 相似文献
38.
Koji Takahashi 《International Journal of Japanese Sociology》2016,25(1):117-130
Individual-level variables such as gender, education, occupation, and employment type are well-known factors that induce wage gaps in the labor market. This article aims to divide wage gaps into two components—those arising within each firm (the intra-firm wage gap) and those arising between different firms (the inter-firm wage gap)—and measure their respective proportions by individual-level variables, as studies suggest that each wage gap based on an individual-level variable has a unique mix of an intra-firm and inter-firm wage gap. This measurement can help enrich investigation into the generative process of wage gaps and formulate effective labor policies to reduce them. Accordingly, we compared the coefficients of the independent variables of the wage function estimated by a pooled ordinary least squares model and a fixed-effect model, using nationwide employer–employee matching data collected by the Japanese government. We found that wage gaps by gender and employment type mostly consist of intra-firm wage gaps, and those by education and occupation have a larger share of inter-firm wage gaps. The findings suggest that different research strategies are required to investigate the generative process of each wage gap, and that regulations on and interventions in organizational processes are important to reduce wage gaps based on gender and employment type. 相似文献
39.
Kazuyoshi Shigehara Hiroyuki Konaka Masashi Ijima Takahiro Nohara Kazutaka Narimoto Koji Izumi 《The aging male》2016,19(4):239-243
We investigated the correlation between highly sensitive C-reactive protein (hs-CRP) levels and erectile function, and assessed the clinical role of hs-CRP levels in men with late-onset hypogonadism (LOH) syndrome. For 77 participants, we assessed Sexual Health Inventory for men (SHIM) score, Aging Male Symptoms (AMS) score and International Prostate Symptom Score (IPSS). We also evaluated free testosterone (FT), hs-CRP, total cholesterol, triglyceride levels, high density lipoprotein cholesterol, hemoglobin A1c, body mass index, waist size and blood pressure. We attempted to identify parameters correlated with SHIM score and to determine the factors affecting cardiovascular risk based on hs-CRP levels. A Spearman rank correlation test revealed that age, AMS score, IPSS and hs-CRP levels were significantly correlated with SHIM score. Age-adjusted analysis revealed that hs-CRP and IPSS were the independent factors affecting SHIM score (r=??0.304 and ?0.322, respectively). Seventeen patients belonged to the moderate to high risk group for cardiovascular disease, whereas the remaining 60 belonged to the low risk group. Age, FT value and SHIM score showed significant differences between the two groups. A multivariate regression analysis demonstrated that SHIM score was an independent factor affecting cardiovascular risk (OR: 0.796; 95%CI: 0.637–0.995). 相似文献
40.
Kazuyoshi Shigehara Tohru Miyagi Takao Nakashima Koji Izumi Yasuhide Kitagawa Atsushi Mizokami 《The aging male》2016,19(2):128-133
This study analyzed the effects of dutasteride on lower urinary tract symptoms based on the association between changes in the total testosterone (TT)/dihydrotestosterone (DHT) levels and total prostate volume (TPV) reduction. Sixty participants diagnosed with benign prostatic hyperplasia were given 0.5?mg of dutasteride daily for 52 weeks. Measures of TT and DHT levels, TPV and uroflowmetry were obtained before and after dutasteride treatment. Forty-three patients demonstrated a TPV reduction of ≥5% (Group 1), whereas the remaining 17 patients demonstrated a TPV reduction of <5% (Group 2). DHT suppression and DHT/TT ratio at baseline were significantly higher in Group 1 than Group 2. International Prostate Symptom Scores (IPSS) and uroflowmetry were significantly improved in both groups. In Group 2, nine patients demonstrated some improvement in IPSS (Group 2A), whereas eight did not (Group 2B). The rate of TT increase and improvement in voiding symptoms were significantly higher in Group 2A than Group 2B. Dutasteride-induced TPV reduction is dependent on individual 5-α reductase inhibitor activity. Some patients demonstrating smaller dutasteride-induced TPV reduction may experience an improvement in voiding symptoms owing to an increased level of testosterone. 相似文献