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91.
92.
Global population aging has led to considerable disquiet about future support for frail older people; however, the determinants are poorly understood. Moreover, most industrialized societies have witnessed considerable changes in family behavior (e.g., rises in divorce and declining fertility). Such trends may have adversely affected the support systems of older people; nonetheless, only recently has research begun to address this issue. Employing data from the longitudinal British Household Panel Survey (1991–2003) and the 1998 Indagine Multiscopo sulle Famiglie "Famiglia, soggetti sociali e condizione dell'infanzia," we investigated the association between family disruptions due to divorce, separation, or death and three key dimensions of informal support: (i) frequency of contact with unrelated friends (among all respondents aged 65 years and over); (ii) co-residence with children (among unmarried mothers aged 65 years and over); and (iii) regular or frequent help received from children (e.g., household assistance including care) among parents aged 65 years and over. In addition, we conducted a comparative investigation of the relationship between family disruptions and the use of home care services (i.e., health visitor or district nurse; home help; meals-on-wheels) among parents aged 65 years and over. Our findings suggest that in a culture like the U.K.'s, where relations between kin are primarily influenced by individualistic values, support in later life appears to be primarily related to need, whereas in societies with a strong familistic culture (like Italy's), support is received irrespective of the older person's individual characteristics.  相似文献   
93.
Epidemiological data show high rates of suicide attempts among adolescent Latinas. Few studies have addressed the psychosocial, cultural and family correlates of suicide attempts among this age group of a rapidly growing population. The authors studied 31 adolescent Hispanic females who were receiving mental health services; 14 girls had attempted suicide in the previous five years and 17 had never attempted suicide. The two groups of girls did not differ significantly with respect to demographic profiles, levels of depression, family type, acculturation, or self-esteem. However, as hypothesized, the mutuality between girls and their mothers was lower among suicide attempters. Maladaptive coping skills of withdrawal and wishful thinking were more commonly used by attempters, and non-attempters used emotional regulation and problem-solving more frequently. Findings are discussed within the context of the empirical and theoretical literature and implications for practice are considered.  相似文献   
94.
We present a flexible and versatile model which addresses the problem of assigning optimal prices to assets whose value becomes zero after a fixed expiry date. (Such assets include the important example of seats on airline flights.) Our model is broad in scope, in particular encompassing the ability to deal with arrivals of customers in groups. It is highly adaptable and can be adjusted to deal with a very extensive set of circumstances.Our approach to the problem is based on elementary and intuitively appealing ideas. We model the arrival of customers (or groups of customers) according to an inhomogeneous Poisson process. We incorporate into the model time dependent price sensitivity (which may also be described as “time dependent elasticity of demand”). In this setting the solution to the asset pricing problem is achieved by setting up coupled systems of differential equations which are readily amenable to numerical solution via (for instance) a vectorised Runge-Kutta procedure. An attractive feature of our approach is that it unifies the treatment of discrete and continuous prices for the assets.  相似文献   
95.
In this paper, we use linked census data from England and Wales to investigate whether having a large number of siblings leads to lower educational attainment. There is a large literature suggesting that with large sibship size, parental resources will be diluted and this, in turn, will lead to lower educational attainment. Using twin births and the sex composition of the sibling group as instrumental variables, we find that the evidence of a family size effect on educational attainment is rather uncertain. Similar results are obtained when we use occupational attainment as the dependent variable. We also demonstrate the confounding of birth order and family size effects, and show that an adjusted birth order index proposed by Booth and Kee provides an effective solution to this estimation problem.  相似文献   
96.
Over recent years, sociologists of education have paid increasing attention to the higher education sector. They have highlighted the ways in which, despite the significant expansion in the number of university places available in many countries across the world, access to and choices about higher education continue to be strongly influenced by social class. This article provides an overview of recent literature in this field and explores how scholars have tended to explain this influence by drawing on Pierre Bourdieu's concepts of habitus and cultural and social capital.  相似文献   
97.
98.
Several recent studies have revealed substantial limitations in 2‐year‐olds' ability to search accurately for objects that have undergone unseen movement, even along highly constrained paths. In many of these studies, children observed a ball as it rolled down a track and behind an occluding panel that contained 4 doors. The track had a barrier that was partly visible and could be placed in locations corresponding to the doors. When the ball came to a rest against the barrier and behind the occluder, the child's task was to find the ball by opening the correct door. The search accuracy of 2‐year‐olds has not differed from chance across several variations of this task. This research was conducted to identify the source of 2‐year‐olds' limitation in this domain. Children were granted a full view of the event before the ball was occluded with a door panel. Children's performance was better under this condition, but was still not systematically accurate unless their gaze remained locked onto the correct location. Two‐year‐olds' weak performance in these search tasks appears to be more a consequence of limitations in spatial integration than in their representation of unseen movement.  相似文献   
99.
This is the first article in Symbolic Interaction's symposium in tribute to Tamotsu (Tom) Shibutani (1920–2004). The author, a student in Shibutani's graduate course on social control, discusses his teacher's ideas and their evolution into his own. The article provides ample basis for the author's observation: a scholar's contribution can be measured not only by the cumulative corpus of his or her published work, but also by the influence that this individual has had on the work of others.  相似文献   
100.
A predictive case-cohort model is applied to Norwegian data to analyze the interaction between challenge and stability factors for bovine spongiform encephalopathy (BSE) during the period 1980-2010. For each year, the BSE risk in cattle is estimated as the expected number of cases. The age distribution of expected cases as well as the relative impact of different challenges is estimated. The model consists of a simple, transparent, and practical deterministic spreadsheet calculation model, in which the following country-specific inputs are entered: (i) annual imports of live cattle and meat and bone meal, (ii) age distribution of native cattle, and (iii) estimated annual basic reproduction ratio (R(0)) for BSE. Results for Norway indicate that the highest risk of BSE cases was in 1989, when a total BSE risk of 0.13 cases per year was expected. After that date, the year-to-year decrease in risk ranged between 3% and 47%, except for a secondary peak in 1994 at 0.06 cases per year. The primary peak was almost entirely (99%) attributable to the importation of 11 cattle from the United Kingdom between 1982 and 1986. The secondary peak, in 1994, originated mainly from the recycling of the U.K. imported cattle (92%). In 2006, the remaining risk was 0.0003 cases per year, or 0.001 per million cows per year, with a maximal age-specific incidence of 0.03 cases per million per year in 10-year-old cattle. Only 15% of the cases were expected in imported cattle. The probability of having zero cases in Norway in 2006 was estimated to be 99.97%. The model and results are compared to previous risk assessments of Norway by the EU.  相似文献   
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