全文获取类型
收费全文 | 91245篇 |
免费 | 1981篇 |
国内免费 | 3篇 |
专业分类
管理学 | 12355篇 |
民族学 | 540篇 |
人才学 | 25篇 |
人口学 | 6974篇 |
丛书文集 | 523篇 |
教育普及 | 1篇 |
理论方法论 | 9457篇 |
现状及发展 | 1篇 |
综合类 | 2103篇 |
社会学 | 42470篇 |
统计学 | 18780篇 |
出版年
2023年 | 511篇 |
2021年 | 567篇 |
2020年 | 1523篇 |
2019年 | 2217篇 |
2018年 | 2087篇 |
2017年 | 3162篇 |
2016年 | 2380篇 |
2015年 | 2062篇 |
2014年 | 2639篇 |
2013年 | 18953篇 |
2012年 | 2375篇 |
2011年 | 2165篇 |
2010年 | 1958篇 |
2009年 | 2181篇 |
2008年 | 2037篇 |
2007年 | 1855篇 |
2006年 | 2088篇 |
2005年 | 2287篇 |
2004年 | 2176篇 |
2003年 | 1898篇 |
2002年 | 1994篇 |
2001年 | 1996篇 |
2000年 | 1786篇 |
1999年 | 1694篇 |
1998年 | 1505篇 |
1997年 | 1347篇 |
1996年 | 1304篇 |
1995年 | 1323篇 |
1994年 | 1282篇 |
1993年 | 1274篇 |
1992年 | 1259篇 |
1991年 | 1201篇 |
1990年 | 1179篇 |
1989年 | 1040篇 |
1988年 | 1108篇 |
1987年 | 988篇 |
1986年 | 885篇 |
1985年 | 1072篇 |
1984年 | 1124篇 |
1983年 | 1017篇 |
1982年 | 929篇 |
1981年 | 863篇 |
1980年 | 809篇 |
1979年 | 871篇 |
1978年 | 769篇 |
1977年 | 686篇 |
1976年 | 659篇 |
1975年 | 624篇 |
1974年 | 516篇 |
1973年 | 441篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
901.
Sheila B. Blume M.D. 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1988,3(4):237-247
The medical model as a conceptual and operative approach to compulsive gambling is discussed. The terms medical model and disease are defined and the practical implications of their application to compulsive gambling are explored. Special attention is given to the addictive disease concept. Finally, a variety of objections to the medical model are described, but it is concluded that the many individual and social advantages of the medical model make it the preferred conceptualization at our present state of knowledge. 相似文献
902.
Durand F. Jacobs Ph.D. 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1988,4(1):27-37
A questionnaire was designed to test selected aspects of the author's General Theory of Addictions (Jacobs, 1982). Data were collected from groups of compulsive gamblers, alcoholics, and compulsive overeaters, and compared with the responses to the same questionnaire obtained from normative samples of adolescents and adults. The more inclusive term, compulsive gambler, has been used throughout, since the sample of gamblers in this study included an inpatient subgroup who had been diagnosed as pathological gamblers, as well as a subgroup of Gamblers Anonymous members who had not been clinically evaluated. Findings support the author's theoretical position that, when indulging, different kinds of addicts will tend to share a common set of dissociativelike experiences that differentiate them from nonaddicts. This has been termed a state of altered identity. 相似文献
903.
"Net undercount rates in the U.S. decennial census have been steadily declining over the last several censuses. Differential undercounts among race groups and geographic areas, however, appear to persist. In the following, we examine and compare several methodologies for providing small area estimates of census coverage by constructing artificial populations. Measures of performance are also introduced to assess the various small area estimates. Synthetic estimation in combination with regression modelling provide the best results over the methods considered. Sampling error effects are also simulated. The results form the basis for determining coverage evaluation survey small area estimates of the 1900 decennial census." 相似文献
904.
M. Ahsanullah 《Statistical Papers》1988,29(1):151-157
Suppose X1, X2, ..., Xm is a random sample of size m from a population with probability density function f(x), x>0 and let X1,m<...m,m be the corresponding order statistics. We assume m as an integer valued random variable with P(m=k)=p(1?p)k?1, k=1, 2, ... and 0 and n X1,n for fixed n characterizes the exponential distribution. In this paper we prove that under the assumption of monotone hazard rate the identical distribution of and (n?r+1) (Xr,n?Xr?1,n) for some fixed r and n with 1≤r≤n, n≥2, X0,n=0, characterizes the exponential distribution. Under the assumption of monotone hazard rate the conjecture of Kakosyan, Klebanov and Melamed follows from the above result with r=1. 相似文献
905.
In this paper the timing of maternity is estimated by a hazard model. The novel aspect of this paper is that it is shown that wages and total household labor income have a significant effect on the timing of maternity. Both the wage rate of the woman and the wage rate of the husband have a negative effect on the timing of maternity. Total household labor income increases the probability of having a child at an earlier age. Calculated elasticities show that the timing of maternity is relatively elastic with respect to wage rates. However, the elasticities of the decision whether or not to have children altogether are much smaller. Women working in the labor market delay the timing of maternity compared to non-participating women. Attending school has the same effect. Until the age of 28 the maternity hazard increases with age, after that it decreases.We benefited from comments on previous drafts by Siv Gustafsson, Joop Hartog, Peter Kee, Herriette Maassen van den Brink, Eddie Mekkelholt, Joop Odink, Hessel Oosterbeek, Hans van Ophem, Gusta Renes, Andre Voskamp, two anonymous referees, and the Managing Editor of this Journal. This paper is a revised version of a paper presented at the third annual meeting of the European Society for Population Economics, Paris, June 1989. The usual disclaimer applies. 相似文献
906.
Hunt CL 《Sojourn (Singapore)》1992,7(2):208-222
"The Philippines has two characteristics which differentiate if from other countries in Southeast Asia. It is the only predominantly Christian country in the region and it has one of the highest rates of population growth. Non-Catholic Christians make up only about 9 per cent of the population compared with around 82 per cent for Roman Catholics. Given the Catholic Church objections to both contraception and abortion, it is not illogical to hypothesize a relation between the religious composition of the population and its rate of population growth." 相似文献
907.
M Smith K C Buckwalter 《Journal of psychosocial nursing and mental health services》1992,30(10):30-36
1. Several factors may affect an elderly client's use of medications: polypharmacy, potentially leading to interactions; over-the-counter drugs taken without a physician's knowledge; noncompliance or poor compliance with medication regimens; and ageist beliefs. 2. Psychiatric nurses must be aware that the signs and symptoms they observe may be the result of normal physical or biological aging, psychosocial changes, disease-related changes, medication side effects, or a drug interaction. 3. Nurses must ask two questions when psychotropic drugs are used with elderly clients: What will be the onset, duration, magnitude, and characteristic action of a specific drug in an individual; and What are the characteristics of an "ideal" medication? 相似文献
908.
C J Van Dongen J Jambunathan 《Journal of psychosocial nursing and mental health services》1992,30(11):11-14
1. It is important to examine client and staff satisfaction with the RN case management (RNCM) model to enhance the quality of care in psychiatric settings. 2. Ninety-two percent of clients surveyed ranked the RNCM care as "excellent" or "above average." Clients valued most the humanistic role of the RNCM and repeatedly commented on the importance of the nurse being caring, genuine, and supportive. 3. RNCMs expressed high satisfaction with their role, which they described as collaborative with the psychiatrist, yet also professional and independent. Psychiatrists expressed a high degree of confidence that clients were receiving excellent care by competent nurse professionals. 相似文献
909.
Elective single mothers are adult, unmarried women who intentionally become mothers. This study utilized longitudinal data about 17 Caucasian, elective single mothers and their children to identify fathers' roles in these families, and to understand children's views of their fathers. These single mothers and their children resided for the first six years of the children's lives in father-absent households. By age six, most of the children had ghost fathers, whom they had never met or knew little about. The data suggest that the father often becomes a family secret, and that children may blame themselves for their fathers' absence. 相似文献
910.
Garry J. Smith Ph.D. 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1992,8(4):331-349
A paradox currently exists regarding legal sports gambling in North America: various forms are flourishing in Nevada, Oregon, and several Canadian provinces, while at the same time the United States Congress is conducting hearings on two bills that would prohibit any new state-sponsored sports gambling initiatives. This study examines the issue of why some jurisdictions are enthusiastic about legal sports gambling while others strongly resist the concept. In reviewing these divergent viewpoints, a case study of the newfledged Canadian Sport Select gambling format is presented. This example is used to highly the perils and payoffs of a typical state-sponsored sports gambling scheme, with a view toward broadening our understanding of how they work and how they might be fairer to the public. 相似文献