全文获取类型
收费全文 | 7106篇 |
免费 | 376篇 |
国内免费 | 72篇 |
专业分类
管理学 | 763篇 |
民族学 | 118篇 |
人口学 | 128篇 |
丛书文集 | 464篇 |
理论方法论 | 379篇 |
综合类 | 4153篇 |
社会学 | 651篇 |
统计学 | 898篇 |
出版年
2024年 | 52篇 |
2023年 | 108篇 |
2022年 | 142篇 |
2021年 | 168篇 |
2020年 | 203篇 |
2019年 | 168篇 |
2018年 | 192篇 |
2017年 | 261篇 |
2016年 | 240篇 |
2015年 | 241篇 |
2014年 | 211篇 |
2013年 | 789篇 |
2012年 | 482篇 |
2011年 | 428篇 |
2010年 | 263篇 |
2009年 | 205篇 |
2008年 | 349篇 |
2007年 | 475篇 |
2006年 | 448篇 |
2005年 | 403篇 |
2004年 | 352篇 |
2003年 | 299篇 |
2002年 | 252篇 |
2001年 | 222篇 |
2000年 | 168篇 |
1999年 | 89篇 |
1998年 | 54篇 |
1997年 | 44篇 |
1996年 | 47篇 |
1995年 | 44篇 |
1994年 | 33篇 |
1993年 | 19篇 |
1992年 | 13篇 |
1991年 | 16篇 |
1990年 | 16篇 |
1989年 | 13篇 |
1988年 | 8篇 |
1987年 | 7篇 |
1986年 | 1篇 |
1985年 | 3篇 |
1984年 | 8篇 |
1983年 | 7篇 |
1982年 | 3篇 |
1981年 | 3篇 |
1980年 | 1篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1977年 | 1篇 |
排序方式: 共有7554条查询结果,搜索用时 15 毫秒
991.
This research examines the neurophysiological correlates of consumers’ price memory processes. We focus on the explicit and implicit dimensions of consumers’ price knowledge and use an experimental functional Magnetic Resonance Imaging (fMRI) study to assess how the encoding of task-dependent price memory affects the choice process and neural activation. The findings of our study add to the field of consumer neuroscience by demonstrating how neural correlates of explicit and implicit task-dependent price memory can shed light on processes that guide consumer decision-making. Over the course of our experiment we found that consumers did not always make consistent decisions, but that their decisions were influenced by explicit components of price memory. Implicit price memory components seem to have a more supportive role in the decision-making process. In summary, we found that price memory is a dynamic construct that is influenced by unconscious and neurophysiological processes, and we conclude that a neurophysiological perspective can add value for consumer and marketing research. 相似文献
992.
993.
A method is proposed in this paper to assess the local influence of minor perturbations for the Sharpe model when the normal distribution is replaced by normal/independent (NI) distributions. The family of NI distributions is an attractive class of symmetric heavy-tailed densities that includes as special cases the normal, t-Student, slash, and the contaminated normal distributions. Since the returns of the market are not observable, the statistical analysis is carried out in the context of an errors-in-variables model. An influence analysis for detecting influential observations (atypical returns) is developed to investigate the sensitivity of the maximum likelihood estimators. Diagnostic measures are obtained based on the conditional expectation of the complete-data log-likelihood function. The results are illustrated by using a set of shares of companies traded in the Chilean stock market. 相似文献
994.
Michelle Farrington 《Gender and development》2019,27(2):295-315
ABSTRACTThe rapid influx of Rohingya refugees into Cox's Bazar, Bangladesh, has led to the formation of huge camps, built on difficult terrain, short of space and with high population density. All these factors present numerous challenges to agencies seeking to provide latrines, water points, and bathing facilities. Feedback gathered from women and girls highlighted significant challenges around access, safety, privacy, and dignity, including management of personal hygiene and menstruation. Within the humanitarian community, site planning and WASH (water, sanitation and hygiene) infrastructure planning/design processes have mainly been dominated by male architects and engineers, often with gendered assumptions about the user. Acknowledging these challenges, Oxfam implemented the Women’s Social Architecture Project to work with women and adolescent girls, and female architects with a background or interest in social or feminist design and architecture, to add a different perspective into the design and siting of WASH facilities. The project has consisted of formative research with Rohingya women and girls, and design workshops with architects in which Rohingya women have co-created designs that tackle the issues they face regarding WASH facilities. This article provides an account of the progress to date, together with feedback from women and girls and the WASH Sector in Cox's Bazar ahead of the final completion of the project in June 2019. 相似文献
995.
This paper aims to determine, by means of regression analysis, which exported product groups, categorized according to their technological intensity, have the greatest effect on the movements in the volume of GDP p/c of the Western Balkan Countries (WBCs). The analysis, based on statistical-econometric methodology, includes 16 commodity groups per each WBC (Albania; Bosnia and Herzegovina; Croatia; FYR Macedonia; Montenegro; Serbia). The data were collected and presented in accordance with the HS4 system classification, which is also used for development of the ITC’s Trade Map. The results of the analysis show that those commodity groups produced by medium-low and low technology industries have the greatest effect on the change in the volume of GDP p/c in all WBCs in the period 2005–2015. 相似文献
996.
本文介绍了4种块不完全分解ORTHOMIN加速方法,其中自然网格排序上有三种,即一、二、三级块不完全分解和D4网格排序上的一级块不完全分解,并将此方法用于水平井的油藏模拟,取得了满意的效果。 相似文献
997.
何小红 《高等函授学报(社会科学版)》2015,(5)
本文论述新形势下高校图书馆服务创新的主要内容,包括服务的广度和深度、形式和手段、泛在服务和个性化服务,接着分析服务创新所需要的组织架构、人力物力支持、业务流程规范和技术手段跟进等,然后提出业务流程重组的原则和内容,最后以华中师范大学图书馆业务规程作为案例,论述高校图书馆业务流程重组实施过程和效果。 相似文献
998.
An important marker for identifying the progression of human immunodeficiency virus (HIV) infection in an individual is the CD4 cell count. Antiretroviral therapy (ART) is a treatment for HIV/AIDS (AIDS, acquired immune-deficiency syndrome) which prolongs and improves the lives of patients by improving the CD4 cell count and strengthen the immune system. This strengthening of the immune system in terms of CD4 count, not only depends on various biological factors, but also other behavioral factors. Previous studies have shown the effect of CD4 count on the mortality, but nobody has attempted to study the factors which are likely to influence the improvement in CD4 count of patients diagnosed of AIDS and undergoing ART. In this paper, we use Poisson regression model (GPR) for exploring the effect of various socio-demographic covariates such as age, gender, geographical location, and drug usage on the improvement in the CD4 count of AIDS patients. However, if the CD4 count data suffers from under or overdispersion, we use GPR model and compare it with negative binomial distribution. Finally, the model is applied for the analysis of data on patients undergoing the ART in the Ram Manohar Lohia Hospital, Delhi, India. The data exhibited overdispersion and hence, GPR model provided the best fit. 相似文献
999.
This reflective discussion draws on data from a collaborative enquiry into kinship or family and friends practice. It introduces perspectives from complexity and chaos theory as a way of re‐examining the challenges of kinship practice. The discussion highlights the enduring challenges for practitioners, not least, managing anxiety and uncertainty, sustaining continuity and containment, becoming experienced and taking account of the complex developmental needs of the children and their families. The discussion particularly raises questions about appropriate settings for practitioners to undertake such a demanding area of child and family social work. 相似文献
1000.
本试验选择朋娜脐橙(Skagg’sBonanzaNavel),在萌芽期和花芽分化期叶片施用15N硫铵,(32)P磷酸二氢纳和(15)N尿素,研究脐橙在萌芽期、初花期、生理落果期以及花芽分化期氮、磷营养吸收运转分配规律.结果表明开花这个生理过程需消耗大量氮、磷营养.同时在落花落果期,落花落果的(32)P放射比强度和NDFF%都比座果的小,说明,氮磷营养条件是引起脐橙落花落果的主要原因之一.而且,GA3+BA,GA3激素处理能吸引氮磷营养向幼果运输,此结果与GA3+BA,GA3处理提高座果率和减少落果率相一致. 相似文献