首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   7190篇
  免费   309篇
各国政治   485篇
工人农民   246篇
世界政治   707篇
外交国际关系   507篇
法律   3110篇
中国共产党   1篇
中国政治   57篇
政治理论   2310篇
综合类   76篇
  2023年   46篇
  2022年   30篇
  2021年   66篇
  2020年   118篇
  2019年   177篇
  2018年   206篇
  2017年   246篇
  2016年   248篇
  2015年   153篇
  2014年   207篇
  2013年   1197篇
  2012年   210篇
  2011年   218篇
  2010年   205篇
  2009年   223篇
  2008年   205篇
  2007年   263篇
  2006年   239篇
  2005年   261篇
  2004年   254篇
  2003年   249篇
  2002年   252篇
  2001年   139篇
  2000年   140篇
  1999年   119篇
  1998年   103篇
  1997年   106篇
  1996年   101篇
  1995年   97篇
  1994年   104篇
  1993年   85篇
  1992年   97篇
  1991年   103篇
  1990年   75篇
  1989年   78篇
  1988年   74篇
  1987年   69篇
  1986年   78篇
  1985年   78篇
  1984年   60篇
  1983年   73篇
  1982年   62篇
  1981年   63篇
  1980年   46篇
  1979年   41篇
  1978年   35篇
  1977年   35篇
  1976年   32篇
  1974年   20篇
  1973年   16篇
排序方式: 共有7499条查询结果,搜索用时 31 毫秒
81.
82.
A series of related studies (Freedman and Berelson, 1976; Mauldin and Berelson, 1978; and Tsui and Bogue, 1978) have presented empirical findings based on multiple regression analysis which indicated that family planning program effort (FP), as measured by an index developed by Lapham and Mauldin (1972), was the single most important predictor of (or influence on) fertility reduction in less-developed countries (LDCs). The basic results have been confirmed repeatedly. A more extensive data set was used to extend the analysis to a comparison of results of corss-sectional models circa 1970 and 1980. The study builds upon the results of past studies yet differs from them in several ways. All the variables in the present study were measured at 2 points in time: circa 1970 and circa 1980, allowing a comparison between cross-sectional models for 1970 and 1980. Among the cases included in this multivariate analysis was China, a country usually excluded for lack of data. The analysis was extend to 85 countries. Cases were weighted by population, having the effect of increasing the impact of larger countries such as India and China on the outcome of the analysis. Total fertility rate (TFR) was used as an indicator of fertility. For 1970, family planning program effort had the strongest direct influence on fertility (a result consistent with previous studies). Life expectancy at birth was the other direct influence. The direct influence of life expectancy at birth was less than that of family planning, but the total influence was greater. After life expectancy and family planning, school enrollment and relative educational status of women had the strongest indirect and total influences. The other variables all had a positive influence on fertility. When the total variance attributable was considered, directly and indirectly to each of the independent variables, urbanization, carlorie supply, and per capita gross national product all accounted for less than 5% of the variance in fertility, all of it indirect. Life expectancy, family planning, and school enrollment each explained (directly plus indirectly) more than 10% of the variance in fertility. The pattern differed somewhat for 1980. Calorie supply, per capita gross national product, and relative educational status of women had no influence, direct or indirect on fertility. Also for 1980, life expectancy had a stronger direct influence on fertility than family planning. Overall, life expectancy at birth, family planning program effort, and total school enrollment emerged as the principal influences on fertility.  相似文献   
83.
Atypical entrance gunshot wounds may be produced by deflected or ricocheting bullets. One special type of atypical entrance wound involves abrasion of the skin at a site that is remote from the point of dermal penetration. These remote abrasions, termed "tumbling abrasions," are produced by bullets that tumble after impact with an intermediate target. Three cases of tumbling abrasions are presented.  相似文献   
84.
System of cities dynamics in newly industrializing nations   总被引:1,自引:0,他引:1  
Rapid industrialization in such countries as Korea, Malaysia, and Taiwan suggests that the complex functional structures of cities in the periphery may appear early in development. This paper proposes a 4-stage framework for the dynamics of a system of cities in a developing country undergoing industrialization and encompassing both nonindustrial and industrial development. The synthesis is assessed with evidence from the newly industrializing Asian nations of Korea, Malaysia, and Taiwan. The 4 stages of cities' industrial change include 1) increasing primacy with industrial satellites, 2) increasing primacy with industrial satellites and nodal towns on a transport network, 3) rapidly increasing primacy with rapidly growing industrial satellites and nodal towns on the transport network, and 4) decreasing primacy with slowly growing industrial satellites and rapidly growing peripheral industrial towns. The 4-stage synthesis suggests that economic development in the periphery may occur even while the primate city maintains its hegemony over control and coordination functions. Peripheral industrial growth does not challenge this hegemony. The growth of industrial cities is, instead, part of a process of regional specialization in which the low cost labor in the periphery becomes an attraction for industry. These stages are not inevitable. Government efforts are necessary to develop rural areas in terms of social improvements (education and health), capital infrastructure (transportation and utilities), and fair payments to farmers for their outputs. These seem to be the lessons learned from the industrialization process in Korea, Malaysia, and Taiwan.  相似文献   
85.
An examination of a case in which adjunctive use of scanning electron microscopy (SEM) demonstrated the presence of unusual three-dimensional characteristics in a bite mark. Despite the fact that many bite marks do not show "depth," demonstration of the presence of this third dimension can produce significant data for evidentiary purposes. In some instances, these data may transform what seem to be class characteristics of a bite mark into individual characteristics and thus impart much more uniqueness to the evidence. Because of the high level of resolution and magnification of SEM, some three-dimensional characteristics not visible to the eye can be shown quite clearly by its use. Emphasis will be given to the value of SEM as a tool of the forensic odontologist in bite mark analysis.  相似文献   
86.
Book reviews     
Handbook of Legal Information Retrieval Edited by J Bing, Norwegian Research Centre for Computers and Law, Oslo, in co‐operation with T Fjeldvig, T Harvold and R Svoboda North‐Holland 1984, US $96.25

Information Technology: The Challenge to Copyright. James Lahore, Gerald Dworkin and Yvonne Smyth Sweet & Maxwell and The Centre for Commercial Law Studies 1984, £12.00

Data Processing and the Law Edited by Colin Campbell Sweet and Maxwell 1984, £20.00

Le droit des Contrats Informatiques — Principes — Applications Centre de Recherches informatique et droit des Facultes Universitaires de Namur Maison Ferdinand Larder (Brussels), 1983, 45 FB

Computer Insecurity Adrian R.D. Norman Chapman and Hall 1983, £14.95

The Data Protection Act Richard Sizer and Philip Newman Gower Publishing, 1984, £16.95

The Data Protection Act 1984 Professor Bryan Niblett Oyez Longman Publishing, 1984, £18.00

The Data Protection Act 1984 — A Guide to the New Legislation J. A. L. Sterling CCH Editions, 1984, £15.00

Privacy and Data Protection — An International Bibliography Professor David H. Flaherty Mansell Publishing, 1984, £23.50

Computer Contracts R Morgan & G Stedman Oyez Longman Publishing 1984, 2nd Edition, £27.50

Computer Contracts Handbook Michele Rennie Sweet & Maxwell 1984, £15.00

Computer Contracts — An International Guide to Agreements and Software Protection Hilary Pearson Financial training 1984, £14.95  相似文献   

87.
88.
89.
A risk marker analysis of assaulted wives   总被引:1,自引:0,他引:1  
In the wife assault literature, a number of risk markers have been identified. Using the data of the female respondents to the National Family Violence Survey (n = 699), a multivariate analysis was performed to examine which risk factors best differentiated between women involved in nonviolent relationships, verbally aggressive relationships, relationships exhibiting minor physical aggression and severely violent relationships. High levels of marital conflict and lower socioeconomic status emerged as the primary predictors of an increased likelihood of wife assault. Research implications are discussed.  相似文献   
90.
LE MONDE ARABE ET MUSULMAN AU MIROIR DE L'UNIVERSITE FRANÇAISE: REPERTOIRE DES THESES SOUTENUES DANS LES UNIVER‐SITES FRANÇAISES, EN SCIENCES DE L'HOMME ET DE LA SOCIETE, SUR LE MONDE ARABE ET MUSULMAN (1973–1987). By MARIE BURGAT, DANIELLE BRUCHET, JACQUELINE QUILET [& others]. Aix‐en‐Provençe, Institut de Recherche et d'Etudes sur le Monde Arabe et Musulman, 1989–92. 4 vols.

MAPAS, PLANOS Y FORTIFICACIONES HISPANICOS DE MARRUECOS (S.XVI‐XX)/CARTES, PLANS ET FORTIFICATIONS HISPANIQUES DU MAROC (XVIe‐XXe S.). By JUAN BTA. VILAR. 604pp. Text in Spanish. Table of Contents, Preface (by José Antonio Calderon Quijano), and Introduction in Spanish and French. Madrid, Ministerio de Asuntos Exteriores, Secretaría de Estado para la Cooperación Internacional y para Iberoamérica: Dirección General de Relaciones Culturales y Científicas, Agencia Española de Cooperación International, Institute de Cooperación con el Mundo Arabe, 1992. 7210 ptas.

A BIOGRAPHICAL DICTIONARY OF CONTEMPORARY AFGHANISTAN. By LUDWIG W. ADAMEC. Graz, Akademische Druck‐ u. Verlagsanstalt, 1987. vi, 252 pp. Photo section. ÖS 450.‐

TÜRKIYE DI?INDAK? TÜRKLER B?BL?YOGRAFYASI. A BIBLIOGRAPHY OF TURKS OUT OF TURKEY. By ?SMET B?NARK and others. Ankara, T.C. Ba?bakanlik Devlet Ar?ivleri Genel Müdürlü?ü Dokümentasyon Dairesi Ba?kanli?i (Yayin No.5), 1992. 2 vols. lxv, 1379 pp.

GULF CRISIS CHRONOLOGY: DAY‐TO‐DAY COVERAGE OF EVENTS IN THE GULF CONFLICT FROM 2 AUGUST 1990 TO THE 3 MARCH 1991 CEASEFIRE. Compiled by the BBC WORLD SERVICE. Harlow, Longman, 1991. 454 pp. £65.‐

FRAUENFRAGEN IM MODERNEN ORIENT: EINE ERGANZUNGSBIBLIO‐GRAPHIE. WOMEN IN THE MIDDLE EAST AND NORTH AFRICA: A SUPPLEMENTARY BIBLIOGRAPHY. By INGEBORG OTTO & MARIANNE SCHMIDT‐DUMONT. (Biblio., 16.) Hamburg, Deutsches Übersee‐Institut, Übersee‐Dokumentation, Referat Vorderer Orient, 1989. xvi, 126 pp. DM19.‐

THE MIDDLE EAST AND NORTH AFRICA 1993. London, Europa Publications, 1992. xxi, 988 pp. £130.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号