全文获取类型
收费全文 | 459篇 |
免费 | 18篇 |
专业分类
管理学 | 149篇 |
民族学 | 3篇 |
人口学 | 25篇 |
丛书文集 | 1篇 |
理论方法论 | 37篇 |
综合类 | 2篇 |
社会学 | 177篇 |
统计学 | 83篇 |
出版年
2023年 | 8篇 |
2022年 | 4篇 |
2021年 | 4篇 |
2020年 | 16篇 |
2019年 | 17篇 |
2018年 | 28篇 |
2017年 | 26篇 |
2016年 | 26篇 |
2015年 | 12篇 |
2014年 | 28篇 |
2013年 | 43篇 |
2012年 | 24篇 |
2011年 | 38篇 |
2010年 | 23篇 |
2009年 | 18篇 |
2008年 | 23篇 |
2007年 | 26篇 |
2006年 | 17篇 |
2005年 | 17篇 |
2004年 | 14篇 |
2003年 | 12篇 |
2002年 | 19篇 |
2001年 | 6篇 |
2000年 | 4篇 |
1999年 | 5篇 |
1998年 | 5篇 |
1997年 | 3篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1984年 | 2篇 |
1980年 | 1篇 |
1972年 | 1篇 |
排序方式: 共有477条查询结果,搜索用时 265 毫秒
141.
142.
Information about social networks can often be collected as event stream data. However, most methods in social network analysis are defined for static network snapshots or for panel data. We propose an actor oriented Markov process framework to analyze the structural dynamics in event streams. Estimated parameters are similar to what is known from exponential random graph models or stochastic actor oriented models as implemented in SIENA. We apply the methodology on a question and answer web community and show how the relevance of different kinds of one- and two-mode network structures can be tested using a new software. 相似文献
143.
Demand forecast errors threaten the profitability of high–low price promotion strategies. This article shows how to match demand and supply effectively by means of two‐segment demand forecasting and supply contracts. We find that demand depends on the path of past retail prices, which leads to only a limited number of reachable demand states. However, forecast errors cannot be entirely eliminated because competitive promotions entail some degree of random (i.e., last‐minute) pricing. A hedging approach can be deployed to distribute demand risk efficiently over multiple promotional campaigns and within the supply chain. A retailer that employs a portfolio of forward, option, and spot contracts can avoid both stockouts and excess inventories while achieving the first‐best solution and Pareto improvements. We provide an improved forecasting method as well as stochastic programs to solve for optimal production and purchasing policies such that the right amount of inventory is available at the right time. By connecting a stockpiling model of demand with the supply side, we derive insights on optimal risk management strategies for both manufacturers and retailers in a market environment characterized by frequent price promotions and multiple discount levels. We employ a data set of the German retail market for a key generator of store traffic—namely, diapers. 相似文献
144.
This study examines the antecedents of supply chain project success. We first propose and test a model that describes the role of relationship‐level factors (trust and asymmetric dependence) and project‐level factors (between‐firm communication and within‐firm commitment) in determining supply chain project success. We find that project‐level factors completely mediate the effect of trust on project success. We conclude that trust, despite being a stronger predictor compared to asymmetric dependence, is necessary but not sufficient for supply chain project success. We then proceed to further explore the role of these factors by introducing a categorical scheme that differentiates supply chain projects based on the decision rights configuration of each project. This categorization enables us to explore how relationship‐level and project‐level factors can have different impact on performance based on the characteristics of a supply chain project. The findings offer insights into how to effectively manage supply chain projects and inter‐firm alliances. 相似文献
145.
Mahyar Eftekhar Andrea Masini Andreas Robotis Luk N. Van Wassenhove 《Production and Operations Management》2014,23(6):951-964
This article aims to identify optimal vehicle procurement policies for organizations engaged in humanitarian development programs and to derive general insights on the characteristics of these policies. Toward that end, we follow an inductive approach. First, we study the operations of the International Committee of the Red Cross (ICRC) in three representative countries: Sudan, Afghanistan, and Ethiopia. Using a linear programming (LP) model primed with field data provided by the ICRC, we calculate the optimal vehicle fleet size and compare it with the policies actually implemented. Second, drawing from results of the LP model, we develop a stylized quadratic control model and use it to characterize the general structure of the optimal policy under different demand scenarios and operational constraints. After demonstrating that the results of the control model are consistent with those of the LP model in the specific context analyzed, we discuss the optimal policies and the applicability of the former as a practical tool for strategic asset planning. 相似文献
146.
Due to the increasing use of customer databases in many industries, companies nowadays have high visibility about the profitability of individual-level client relationships. This has led some researchers to recommend the implementation of value-based customer management strategies, including the abandonment of unprofitable customer relationships. In this context firms are faced with the choice between direct and indirect abandonment approaches. While direct abandonment strategies tend to be more efficient than indirect ones (i.e., immediate termination of the relationship vs. hoping that the unprofitable customer may leave on her own) they are also claimed to be associated with more severe negative reactions and higher abandonment cost. Based on two surveys among 965 US customers we provide evidence that, despite these beliefs, direct and indirect abandonment strategies do not differ in their negative impact on the abandoning firm. Given that (indirect) abandonment costs are therefore likely to be similar for both approaches, direct abandonment appears to be the recommendable approach for relationship dissolution. 相似文献
147.
Dipl.-Psych. Andreas Koschuth 《Organisationsberatung, Supervision, Coaching》2011,18(2):145-159
The occupational transitions of executives are considered in concerns of the conceptions ??Social Support?? and ??Sense of Coherence?? by a four structured model of a transition cycle. Furthermore the importance of a coaching that recognizes the specific needs during the single phases of a professional transition is described. After all the idea of a coaching is supported, which becomes a status of a fixed installation in organizations. The executives are accompanied through the transition in order to reduce the psychological and organizational costs and finally to commit them and their team members for a long-term employment. In addition the special change from an expert to an executive is taken into consideration. 相似文献
148.
This paper proposes a learning-efficiency explanation of modular structure in language. An optimal grammar arises as the solution to the problem of learning a language from a minimal number of observations of instances of the use of the language. Agents face symmetry constraints that limit their ability to make a priori distinctions among symbols used in the language and among objects (interpreted as facts, events, speakers intentions) that are to be represented by messages in the language. It is shown that if it is commonly known that the object space is modular and messages are strings, then modularity of the language is sufficient and (essentially) necessary for learning efficiency. Journal of Economic Literature Classification Number: C72.I am grateful to Hsueh-Ling Huynh, Bart Lipman, Ariel Rubinstein and Birger Wernerfelt for stimulating discussions and comments. Many thanks are due to the anonymous referee for suggestions that have helped to improve the focus and presentation of the paper. I have benefitted from comments by seminar participants at Arizona State University, Boston University, the University of California-San Diego, the University of Pittsburgh, the Wissenschaftszentrum Berlin für Sozialforschung (WZB), the Midwest Mathematical Economics Meetings, and the Summer in Tel Aviv (SITA). This research was supported by a Grant from the National Science Foundation. 相似文献
149.
Dr. Andreas Bergknapp 《Gruppendynamik und Organisationsberatung》2003,34(3):247-259
This essay presents, based on theoretical-structural perspectives and on the usage of a systemic approach, practical methods and implications for consultants dealing with anger in organisations. The goal of this essay is to make theoretical debates useful for the concrete consultancy practice. The topic of the first step deals with the following central question: Why do consultants need a theory anyway?! The heart of this essay deals with the chances and limits of a conflict resolution training based on the systemic approach using the structural theory as a baseline. Finally, the author presents a diagnostic and intervention method which shall enable new perspectives on anger episodes. 相似文献
150.