全文获取类型
收费全文 | 14739篇 |
免费 | 316篇 |
国内免费 | 15篇 |
专业分类
管理学 | 1954篇 |
民族学 | 96篇 |
人才学 | 1篇 |
人口学 | 1289篇 |
丛书文集 | 145篇 |
理论方法论 | 1313篇 |
综合类 | 712篇 |
社会学 | 7646篇 |
统计学 | 1914篇 |
出版年
2023年 | 93篇 |
2022年 | 76篇 |
2021年 | 122篇 |
2020年 | 235篇 |
2019年 | 310篇 |
2018年 | 428篇 |
2017年 | 585篇 |
2016年 | 423篇 |
2015年 | 326篇 |
2014年 | 383篇 |
2013年 | 2287篇 |
2012年 | 552篇 |
2011年 | 513篇 |
2010年 | 458篇 |
2009年 | 395篇 |
2008年 | 444篇 |
2007年 | 469篇 |
2006年 | 484篇 |
2005年 | 394篇 |
2004年 | 318篇 |
2003年 | 283篇 |
2002年 | 311篇 |
2001年 | 380篇 |
2000年 | 312篇 |
1999年 | 285篇 |
1998年 | 205篇 |
1997年 | 173篇 |
1996年 | 164篇 |
1995年 | 175篇 |
1994年 | 161篇 |
1993年 | 167篇 |
1992年 | 196篇 |
1991年 | 196篇 |
1990年 | 185篇 |
1989年 | 162篇 |
1988年 | 175篇 |
1987年 | 192篇 |
1986年 | 149篇 |
1985年 | 160篇 |
1984年 | 177篇 |
1983年 | 154篇 |
1982年 | 154篇 |
1981年 | 123篇 |
1980年 | 118篇 |
1979年 | 125篇 |
1978年 | 97篇 |
1977年 | 82篇 |
1976年 | 94篇 |
1975年 | 111篇 |
1974年 | 86篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
921.
Environmentally responsible manufacturing, green supply chain management (GSCM), and related principles have become important strategies for companies to achieve profit and gain market share by lowering their environmental impacts and increasing their efficiency. As environment has become a key strategic consideration in supply chains, this study examines the components and elements of GSCM and suggests a novel GSCM evaluation framework. It also provides a real-case study of Ford Otosan, one of the pioneering companies about environmental subjects in Turkey, to illustrate the industrial application of our theoretical assessment model. The identified components are integrated into a strategic assessment and evaluation tool using analytical network process (ANP). The dynamic characteristics and complexity of the GSCM analysis environment make the ANP technique a suitable tool for this study. Moreover, to cope with ambiguity and vagueness of the decision maker's evaluations, the fuzzy extension of the ANP method is preferred. 相似文献
922.
Abstract Abstract. A hierarchical production planning model is developed for a forming facility of a major fibreglass manufacturer. The model establishes aggregate quarterly quantities for families of products, monthly disaggregate production quantities for end-items within these families, and a weekly sequencing schedule of end-items. A key feature of the planning system is its ability to decompose total set-up cost into primary and secondary components and to account appropriately for each component at a distinct level of the planning hierarchy. The mathematical programming formulations, the accompanying solution algorithms, and the results of their application to nine months of actual company demand and cost data are presented. 相似文献
923.
The development of control systems and supporting software remains one of the greatest obstacles to the widespread implementation of highly adaptive reconfigurable automation technology. This paper will present the structure of a modular automation control system designed to support rapid reconfiguration and redeployment of automation components. The paper will first present the concept of a layered system architecture and the use of modular automation components to support the construction of a wide variety of automated systems. This layered system architecture is then applied to the proposed modular supervisory control system responsible for configuring and driving automated production resources. Each of the control components comprising this modular control system will be presented. 相似文献
924.
The objective of this study is to examine the impact of a short-term international experience, which is designed to address the conditions outlined in Allport’s (Allport, G.W. 1954. The Nature of Prejudice. New York: Perseus Book Group) contact hypothesis, on each of the four factors which make up cultural intelligence (CQ). A sample of 135 university students was broken up into test and control groups. The results for the test group suggest that the short-term experience ranging from 7 to 12 days within a structured study abroad service programme, including modest pre-trip preparation, found a significant increase in each of the four factors of CQ. At the same time, there was no significant change in the control group. Implications for human research development research and practice as well as limitations and suggested areas for future research are discussed. 相似文献
925.
The stage gate model has been proposed for application to uncertain technology development. Reports on industrial experience from such implementations are quite limited, however. This led us to explore in six companies what adaptations have been made to facilitate the model's usefulness for technology development and the companies’ experiences from their practical application of the model. Our results indicate that aspects proven important for the operational success, or failure, of the model include the level of adaptation to the characteristics of technology development and a more flexible use than that normally found in product development. 相似文献
926.
Christoph Nohe Björn Michaelis Jochen I. Menges Zhen Zhang Karlheinz Sonntag 《The Leadership Quarterly》2013,24(2):378-389
What makes people perceive a leader as charismatic, and how do team leaders obtain performance outcomes from their followers? We examine leaders in times of organizational change and investigate the mechanisms through which leaders' change-promoting behaviors are associated with team performance. In a multilevel mediation model, we propose that the indirect relationship between change-promoting behaviors and team performance is sequentially transmitted through followers' perceptions of charisma and followers' commitment to change. A study of 33 leaders and 142 followers provides empirical support for the model, using multilevel structural equation modeling to analyze top-down relationships between leaders and followers and bottom-up relationships between followers and team outcomes. Results suggest that team leaders are perceived as more charismatic when they engage in change-promoting behaviors. These behaviors facilitate team performance through individual followers' perceived charisma and commitment to change. 相似文献
927.
Haoli Wang Xirong Xu Yuansheng Yang Kai Lü 《Journal of Combinatorial Optimization》2011,21(4):481-496
Let G=(V,E) be a graph without an isolated vertex. A set D⊆V(G) is a k
-distance paired dominating set of G if D is a k-distance dominating set of G and the induced subgraph 〈D〉 has a perfect matching. The minimum cardinality of a k-distance paired dominating set for graph G is the k
-distance paired domination number, denoted by γ
p
k
(G). In this paper, we determine the exact k-distance paired domination number of generalized Petersen graphs P(n,1) and P(n,2) for all k≥1. 相似文献
928.
929.
This paper numerically examines the size robustness of various conditional moment tests in misspecified tobit and probit models. The misspecifications considered include the incorrect exclusion of regressors, ignored heteroskedasticity and false distributional assumptions. An important feature of the experimental design is that it is based on an existing empirical study and is more realistic than many simulation studies. The tests are seen to have mixed performance depending on both the original null hypothesis being tested and type of misspecification encountered. 相似文献
930.
OLE F. CHRISTENSEN MORTEN FRYDENBERG JENS L. JENSEN JØRGEN G. PEDERSEN 《Scandinavian Journal of Statistics》2007,34(2):347-364
Abstract. The large deviation modified likelihood ratio statistic is studied for testing a variance component equal to a specified value. Formulas are presented in the general balanced case, whereas in the unbalanced case only the one-way random effects model is studied. Simulation studies are presented, showing that the normal approximation to the large deviation modified likelihood ratio statistic gives confidence intervals for variance components with coverage probabilities very close to the nominal confidence coefficient. 相似文献