全文获取类型
收费全文 | 249篇 |
免费 | 14篇 |
专业分类
管理学 | 48篇 |
民族学 | 1篇 |
人口学 | 25篇 |
丛书文集 | 1篇 |
理论方法论 | 23篇 |
综合类 | 2篇 |
社会学 | 105篇 |
统计学 | 58篇 |
出版年
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 4篇 |
2020年 | 8篇 |
2019年 | 14篇 |
2018年 | 20篇 |
2017年 | 16篇 |
2016年 | 11篇 |
2015年 | 11篇 |
2014年 | 12篇 |
2013年 | 39篇 |
2012年 | 17篇 |
2011年 | 9篇 |
2010年 | 18篇 |
2009年 | 11篇 |
2008年 | 16篇 |
2007年 | 7篇 |
2006年 | 4篇 |
2005年 | 7篇 |
2004年 | 9篇 |
2003年 | 3篇 |
2002年 | 2篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1998年 | 3篇 |
1997年 | 3篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1979年 | 1篇 |
1978年 | 1篇 |
排序方式: 共有263条查询结果,搜索用时 375 毫秒
101.
Giorgio Di Pietro 《Policy Studies》2018,39(1):37-53
It is often suggested that vocational education and training (VET) could be key to cut youth unemployment. VET programmes may provide young people with specific professional qualifications that enable them to successfully compete in the labour market. However, despite the great emphasis placed by governments and other institutions on these programmes, VET appears to be far from reaching its full potential in many countries. One barrier preventing students from pursuing this type of education is the stigma associated with VET. This paper looks at the role of media in changing the negative social perceptions of VET. Specifically, it examines whether in Italy the growing popularity of the cooking television reality show MasterChef has led to an increase in the number of students willing to study for a vocational qualification in hospitality and catering. The empirical results show that an increase in the number of MasterChef's viewers is associated with a higher proportion of students willing to attend hospitality and catering schools. This finding suggests that popular television cooking series like MasterChef may be a vehicle through which the image and the attractiveness of VET can be improved. 相似文献
102.
Giorgio Coricelli Enrico Diecidue Francesco D. Zaffuto 《Journal of Risk and Uncertainty》2018,56(2):193-210
This paper describes an experimental study that yields evidence for the coexistence of two decision strategies of choice under risk. Under the first strategy, choices are made based on aspiration levels – a heuristic that simplifies risky decisions. Under the second strategy, which can be used when aspiration levels are not determinative, choices are made based on preferences for positive skewness. Our model fitting confirms the efficacy of a two-pronged approach that can marshal either strategy depending on specific features of the risky prospects under consideration. 相似文献
103.
Riccardo Borgoni Piero Quatto Giorgio Somà Daniela de Bartolo 《Statistical Methods and Applications》2010,19(2):255-276
Radon is a natural radioactive gas known to be the main contributor to natural background radiation exposure and the major
leading cause of lung cancer second to smoking. Indoor radon concentration levels of 200 and 400 Bq/m3 are reference values suggested by the 90/143/Euratom recommendation, above which mitigation measures should be taken in new
and old buildings, respectively, to reduce exposure to radon. Despite this international recommendation, Italy still does
not have mandatory regulations or guidelines to deal with radon in dwellings. Monitoring surveys have been undertaken in a
number of western European countries in order to assess the exposure of people to this radioactive gas and to identify radon
prone areas. However, such campaigns provide concentration values in each single dwelling included in the sample, while it
is often necessary to provide measures of the pollutant concentration which refer to sub-areas of the region under study.
This requires a realignment of the spatial data from the level at which they are collected (points) to the level at which
they are necessary (areas). This is known as change of support problem.In this paper, we propose a methodology based on geostatistical simulations in order to solve this problem and to identify
radon prone areas which may be suggested for national guidelines. 相似文献
104.
Saïd Hanchane 《Journal of applied statistics》2012,39(5):1101-1114
This paper explores endogeneity problems in multilevel estimation of education production functions. The focus is on level 2 endogeneity which arises from correlations between student characteristics and omitted school variables. Theses correlations are mainly the result of student stratification between schools. From an econometric point of view, the correlations between student and school characteristics imply that the omission of some variables may generate endogeneity bias. Therefore, an estimation approach based on the Mundlak [20] technique is developed in order to tackle bias and to generate consistent estimates. Note that our analysis can be extended to any multilevel-structured data (students nested within schools, employees within firms, firms within regions, etc). The entire analysis is undertaken in a comparative context between three countries: Germany, Finland and the UK. Each one of them represents a particular system. For instance, Finland is known for its extreme comprehensiveness, Germany for early selection and the UK for its liberalism. These countries are used to illustrate the theory and to prove that the level of bias arising from omitted variables varies according to the characteristics of education systems. 相似文献
105.
Depression is one of the leading causes of disability in the developed world. Previous studies have shown varying depression
prevalence rates between European countries, and also within countries, between socioeconomic groups. However, it is unclear
whether these differences reflect true variations in prevalence or whether they are attributable to systematic differences
in reporting styles (reporting heterogeneity) between countries and socioeconomic groups. In this study, we examine the prevalence
of three depressive symptoms (mood, sleeping and concentration problems) and their association with educational level in 10
European countries, and examine whether these differences can be explained by differences in reporting styles. We use data
from the first and second waves of the COMPARE study, comprising a sub-sample of 9,409 adults aged 50 and over in 10 European
countries covered by the Survey of Health, Ageing and Retirement in Europe. We first use ordered probit models to estimate
differences in the prevalence of self-reported depressive symptoms by country and education. We then use hierarchical ordered
probit models to assess differences controlling for reporting heterogeneity. We find that depressive symptoms are most prevalent
in Mediterranean and Eastern European countries, whereas Sweden and Denmark have the lowest prevalence. Lower educational
level is associated with higher prevalence of depressive symptoms in all European regions, but this association is weaker
in Northern European countries, and strong in Eastern European countries. Reporting heterogeneity does not explain these cross-national
differences. Likewise, differences in depressive symptoms by educational level remain and in some regions increase after controlling
for reporting heterogeneity. Our findings suggest that variations in depressive symptoms in Europe are not attributable to
differences in reporting styles, but are instead likely to result from variations in the causes of depressive symptoms between
countries and educational groups. 相似文献
106.
Efforts to move sociology beyond the nation state and international relations theory have both been plagued by several limitations and dualisms. Recent research has begun to find ways beyond the problems by turning to Pierre Bourdieu's relational conception of social structure and practice. Yet one specific relational structure forming a key part of the puzzle has been neglected or merely implicitly assumed so far: the space of nation states. After clarifying the structural-constructivist nature of this concept, we aim to specify it by constructing an empirical model of the contemporary space of nation states using a specially compiled dataset and tools of geometric data analysis. The analysis reveals the distribution of powers on the world scene, and more specifically, the uneven possession of two varieties of “meta-capital” understood as capacities to regulate the value and exchangeability of certain capitals and to decree what even defines a legitimate “state”. We argue that the nation state, which is accurately understood as a contingent construct and well-founded fiction from a Bourdieusian viewpoint, should not be excluded when analyzing the expression and reproduction of contemporary global power relations. 相似文献
107.
Melissa Burgess Moser PhD Susan M. Johnson EdD Tracy L. Dalgleish PhD Marie‐France Lafontaine PhD Stephanie A. Wiebe PhD Giorgio A. Tasca PhD 《Journal of marital and family therapy》2016,42(2):231-245
Emotionally focused couple therapy (EFT; Johnson, The practice of emotionally focused couple therapy (1st/2nd edition). Brunner‐Routledge, New York, 2004) is an effective treatment of relationship distress (Johnson et al., Clinical Psychology: Science and Practice, 1999; 6, 67). However, less is known about EFT's impact on couples' relationship‐specific attachment bond. Using hierarchical linear modeling with a sample of 32 couples, we examined session‐by‐session changes in couples' relationship‐specific attachment anxiety and avoidance and pre‐ to posttherapy changes in their relationship‐specific attachment behaviors. Couples significantly decreased in relationship‐specific attachment avoidance, and those who completed a blamer softening significantly decreased in relationship‐specific attachment anxiety. Couples' attachment behavior significantly increased toward security. Finally, session‐by‐session decreases in relationship‐specific attachment anxiety and avoidance were significant associated with increases in relationship satisfaction across sessions. These results provide empirical support for the attachment‐based assumptions of EFT. Video abstract accessible by clicking here 相似文献
108.
Christian Percy Manoel França Simo Dragičević Artur d’Avila Garcez 《International Gambling Studies》2016,16(2):193-210
As gambling operators become increasingly sophisticated in their analysis of individual gambling behaviour, this study evaluates the potential for using machine learning techniques to identify individuals who used self-exclusion tools out of a sample of 845 online gamblers, based on analysing trends in their gambling behaviour. Being able to identify other gamblers whose behaviour is similar to those who decided to use self-exclusion tools could, for instance, be used to share responsible gaming messages or other information that aids self-aware gambling and reduces the risk of adverse outcomes. However, operators need to understand how accurate models can be and which techniques work well. The purpose of the article is to identify the most accurate technique out of four highly diverse techniques and to discuss how to deal analytically and practically with a rare event like self-exclusion, which was used by fewer than 1% of gamblers in our data-set. We conclude that balanced training data-sets are necessary for creating effective models and that, on our data-set, the most effective method is the random forest technique which achieves an accuracy improvement of 35 percentage points versus baseline estimates. 相似文献
109.
In this article we study the bias caused by the conventional retrospective measurement of parental high cultural activities
in the effects of parental high cultural activities and educational attainment on son’s or daughter’s high cultural activities.
Multi-informant data show that there is both random measurement error and correlated error in the respondent’s report of parental
high cultural activities. Correlated measurement error is the consequence of the fact that adult children who have higher
rates of high cultural activities, report higher levels of parental cultural activities than the parents themselves do. When
controls for both types of measurement error are included in structural models, the total intergenerational effect of parental
high cultural activities appears to be larger than in a model without controls for measurement error, but the direct intergenerational
effect is not biased if educational attainment is controlled for. The effect of educational attainment on high cultural activities
is larger in models that correct for measurement error. In addition, the effect of educational attainment is stronger than
the effect of parental high cultural activities, both with and without correction for measurement error.
相似文献
Jannes de VriesEmail: |
110.
Rosita A. Condorelli Aldo E. Calogero Maurizio Di Mauro Laura M. Mongioì Giorgio I. Russo Giuseppe Morgia 《The aging male》2016,19(3):155-160
Purpose: To investigate a possible relation between penile Doppler ultrasound examination (PDUE) parameters and efficacy of chronic therapy with tadalafil (TAD) combined with a protocol of aerobic physical activity (PA) in patients with late onset hypogonadism (LOH). Methods: The study evaluated 30 patients consecutively enrolled with LOH and erectile dysfunction which present contraindication to hormonal replacement therapy for concomitant prostate disease. These patients were subjected to a combined protocol with phosphodiesterase V selective inhibitors (TAD 5?mg daily) and aerobic PA.Results: After three months, we observed significant improvements in erectile function [IIEF-5, median (IQR)?=?13.0 (7.0–18.0) versus 6.0 (5.0–6.75); p?0.01] and of the main metabolic [homeostatic model assessment index, median (IQR)?=?2.5 (1.62–3.37) versus 3.0 (2.0–3.75); p?0.01; body mass index, median (IQR)?=?27.0 (24.0–28.75) versus 27.5 (24.0–29.5)] and vascular parameters [peak systolic velocity, median (IQR)?=?29.5 (24.25–31.0) versus 28.0 (23.0–24.25); acceleration time, median (IQR)?=?114 (105.25–134.0) versus 115.0 (106.5–134.0)], assessed by PDUE.Conclusion: PA in association with phosphodiesterase V inhibitors could compensate the effects of hypogonadism on erectile function and facilitate the clinical response to these drugs even in the absence of adequate serum concentrations of total testosterone. 相似文献