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911.
刘军 《佛山科学技术学院学报(社会科学版)》1999,(1)
下岗问题是当前社会上普通关注的问题,已引起了各级党委和政府高度重视。近年来,佛山市下岗人员逐渐增多,下岗人员的情况不容乐观,已成为新的社会群体,带了一些社会问题。为了安置好下岗人员,必须通过政府、社会的共同努力,做好有关下岗人员的培训、救济、社会服务以及再就业等方面工作 相似文献
912.
农村产业结构合理化与甘肃农村产业结构的调整优化 总被引:1,自引:0,他引:1
当前,调整优化农村不合理的产业结构对深化农村改革,振兴农村经济,实现两个根本转变和农村经济的“第二次飞跃”都具有现实意义。文章首先对农村合理的产业结构的含义及其标志进行了探讨,然后针对甘肃农村产业结构转化中存在的问题,剖析了形成不合理产业结构的主要原因,并进一步探讨了甘肃农村产业结构调整优化的基本思路与主要对策 相似文献
913.
The quasilikelihood estimator is widely used in data analysis where a likelihood is not available. We illustrate that with a given variance function it is not only conservative, in minimizing a maximum risk, but also robust against a possible misspecification of either the likelihood or cumulants of the model. In examples it is compared with estimators based on maximum likelihood and quadratic estimating functions. 相似文献
914.
CONVERGENCE AND PREDICTION OF PRINCIPAL COMPONENT SCORES IN HIGH-DIMENSIONAL SETTINGS 总被引:1,自引:0,他引:1
A number of settings arise in which it is of interest to predict Principal Component (PC) scores for new observations using data from an initial sample. In this paper, we demonstrate that naive approaches to PC score prediction can be substantially biased towards 0 in the analysis of large matrices. This phenomenon is largely related to known inconsistency results for sample eigenvalues and eigenvectors as both dimensions of the matrix increase. For the spiked eigenvalue model for random matrices, we expand the generality of these results, and propose bias-adjusted PC score prediction. In addition, we compute the asymptotic correlation coefficient between PC scores from sample and population eigenvectors. Simulation and real data examples from the genetics literature show the improved bias and numerical properties of our estimators. 相似文献
915.
全球性环境危机与中国重大环境污染事故罪的立法完善 总被引:2,自引:0,他引:2
刑法是保护环境的重要手段之一.在人类社会面临全球性的环境危机的情况下,世界各国的环境刑事立法方面出现了刑法调控范围扩大化、处罚严厉化、处罚方法多样化和以预防为主的趋势.为了治理日益恶化的生态环境,中国1997年修改刑法之后规定了重大环境污染事故罪.但是,由于立法价值的偏离,中国重大环境污染事故罪存在着一些缺陷,应借鉴世界环境刑法的立法经验,并结合中国环境治理的实际情况,对其进行必要的修改. 相似文献
916.
A heated debate about battered women who kill abusive male partners started in the 1970s. In this study, we tracked the public discourse on battered women who kill by coding 250 newspaper articles published between 1978 and 2002. Using four typifying models, we found that leading explanations for why battered women kill medicalized then criminalized their actions; they were mad then bad. We also found that reporters used quotes from claims makers supporting conventional or medical typifications of battered women to a much greater degree than statements from alternative, feminist sources. In conclusion, simplified, sensational and conventional understandings of crime causation drove the social construction of “the battered woman who kills”. She may be mad or bad, but rarely has she been portrayed as reasonable. Suggestions for promoting feminist narrative in the media are also provided. 相似文献
917.
推导了以滤波白噪声方法生成的随机路面的频谱函数,通过调整白噪声的功率谱密度确保随机路面模型在功率谱意义上与实际道路相符.基于左右轮输入间的相关性以及其相干函数模型,应用遗传算法求解左右轮输入间的传递函数,结合前后车轮输入的滞后关系,详细地给出了车辆四轮随机输入时间序列的生成方法. 相似文献
918.
For a two variance component mixed linear model, it is shown that under suitable conditions there exists a nonlinear unbiased estimator that is better than a best linear unbiased estimator defined with respect to a given singular covariance matrix. It is also shown how this result applies to improving on intra-block estimators and on estimators like the unweighted means estimator in a random one-way model. 相似文献
919.
920.
Michael J. MacKenzie Jonathan B. Kotch Lee-Ching Lee Astraea Augsberger Nathan Hutto 《Children and youth services review》2011,33(11):2392-2398
The current analysis was designed to critically examine the tendency to focus on child maltreatment as a unique risk factor and test the resulting assumption of a direct causal relationship between early maltreatment and later behavioral problems. The variation seen in behavioral outcomes among children reported for maltreatment early in life led us to hypothesize that the cumulative level of risk facing children and their families can, at least in part, account for that variation in outcome. Participants were 242 mothers of predominantly at-risk newborn infants who were interviewed shortly after giving birth. The State Central Registry of Maltreatment was then reviewed over each child's first four years of life to assess for early maltreatment. Following the neonatal interviews, mothers completed the Child Behavior Checklist when their children were 4, 6, 8, 10 and 12 years-of-age. Although early maltreatment report does appear to be important to early child functioning, the cumulative level of risk more strongly predicts long-term clinical behavioral difficulty. High-risk children who were not reported for maltreatment by age 4 demonstrate greater behavioral problem trajectories than did low-risk children with a maltreatment report. Maltreatment itself may be best conceptualized as an important, but not singularly so, risk factor for later behavioral problems. In focusing directly on reported maltreatment, our child protective systems may be paying too little attention to what else is going wrong in the lives of children and targeting intervention efforts in the wrong direction. When it comes to early maltreatment our child protective policy and practice need to broaden their lenses to include greater emphasis on overall family functioning, stress and well-being. Early maltreatment, it seems, may be a symptom of more profound problems in the early environments of our most vulnerable children, rather than the problem itself. 相似文献