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   24060篇
  免费   529篇
  国内免费   1篇
财政金融   4635篇
工业经济   1636篇
计划管理   3625篇
经济学   5350篇
综合类   382篇
运输经济   181篇
旅游经济   443篇
贸易经济   3599篇
农业经济   1257篇
经济概况   3425篇
信息产业经济   1篇
邮电经济   56篇
  2021年   134篇
  2020年   250篇
  2019年   412篇
  2018年   502篇
  2017年   515篇
  2016年   523篇
  2015年   292篇
  2014年   534篇
  2013年   2496篇
  2012年   718篇
  2011年   818篇
  2010年   684篇
  2009年   752篇
  2008年   731篇
  2007年   640篇
  2006年   575篇
  2005年   484篇
  2004年   516篇
  2003年   459篇
  2002年   510篇
  2001年   450篇
  2000年   466篇
  1999年   442篇
  1998年   410篇
  1997年   423篇
  1996年   416篇
  1995年   360篇
  1994年   373篇
  1993年   404篇
  1992年   414篇
  1991年   384篇
  1990年   317篇
  1989年   282篇
  1988年   263篇
  1987年   290篇
  1986年   294篇
  1985年   454篇
  1984年   424篇
  1983年   386篇
  1982年   363篇
  1981年   345篇
  1980年   386篇
  1979年   315篇
  1978年   268篇
  1977年   258篇
  1976年   194篇
  1975年   236篇
  1974年   195篇
  1973年   182篇
  1972年   131篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
992.
Projective customer competence is the ability of a product development organization to both understand as well as shape the future needs of customers. To conceptualize this competence and establish its antecedents and performance implications, we draw upon the literature on inter-organizational relationships and innovation. Based on survey data from managers involved with business to business product development, validated with secondary financial data and in-depth interviews, we establish measurement properties for projective customer competence and demonstrate that this competence develops through customer relationships characterized by relational embeddedness, knowledge redundancy and interactivity. Projective customer competence is also shown to have positive implications for both innovativeness and financial performance. Surprisingly, relational embeddedness is shown to be the strongest predictor of projective customer competence, and, while knowledge redundancy helps build projective customer competence, it also has a negative impact on innovativeness.  相似文献   
993.
Past research on B2C relationships has typically focused on unidimensional constructs of satisfaction, trust, and commitment, ignoring underlying psychological dimensions. Although some studies have examined cognitive and affective dimensions of these relational constructs, dual sequential effects in relationship formation have not been investigated. This study proposes and finds (in the context of online group chat) that parallel cognitive and affective sequences of relationship formation take place, thus expanding scholarly understanding of underlying psychological processes and offering marketing practitioners two different ways to build relationships with consumers. The proposed dual‐sequence relational framework further advances theory by shedding light on counterintuitive findings in past research. The study also supports the proposed moderating effects of employee communication style, such that sequential effects of cognitive (affective) relational constructs are stronger with a task‐oriented (socially oriented) employee, thus offering insights to practitioners in hiring and training employees to match specific organizational goals for building relationships with consumers. © 2009 Wiley Periodicals, Inc.  相似文献   
994.
995.
The article discusses the prospects of relations between China and the United States compared to the relations that have taken place between the superpowers of the United States and the Soviet Union. A comparison of relations between the two pairs of superpowers is made in the article based on the following parameters: the interaction of the superpowers in economic and financial sectors, the struggle for the world’s mineral resources, relations in the strategic nuclear sphere, naval rivalry, relationship in the land theaters, and conflicts in cyberspace.  相似文献   
996.
World demand for refractory products—heat-resisting ceramic materials used in metal refining, glass making, and other high-temperature industrial applications—will be slowing down considerably from an annual rate of 10.8 percent during 2002–07 to 3.5 percent during 2007–12. Such slower growth reflects many factors, but is due primarily to: unsettled economic conditions; better efficiencies in steelmaking (which accounts for about half of all end uses of refractories); and the preference of end-users for maintenance rather than new facilities. The four key markets or end uses for refractory materials are: iron and steelmaking; other metal-making; nonmetallic materials such as glass; and an all-other category. In 2007, world refractory demand was 38.1 million metric tons valued at $22.9 billion; the corresponding figures for 2012 are projected at about 45.2 million metric tons valued at $28.5 billion. The Asia-Pacific region accounted for about 45 percent of total weight in 2007; its share by 2012 should rise to about 69 percent, with China becoming the dominant producer and consumer of refractory materials.  相似文献   
997.
ABSTRACT

The effects of gender on involvement in high-risk recreation have received limited research attention despite mounting evidence suggesting the learned interactions between people and places likely vary for men and women. The purpose of this study was to provide insights into how gender influenced the motivation-involvement relationship among whitewater recreationists on a Wild and Scenic River in California. Our results revealed the motivations of Risk, Escape, Learning, and Achievement/Stimulation positively influenced involvement in rafting activities. Although gender did not influence all dimensions of involvement, we found that identity expression varied between subgroups. Specifically, men were more likely to ascribe meaning to rafting than women because this activity allowed them to affirm and express their individual character. The implications emanating from this study advance theoretical understanding of the factors that influence enduring involvement and inform natural resource management decisions about maintaining the desired benefits of activities sought by nature-based recreationists.  相似文献   
998.
During the past decade, a number of interactive technologies, including the Internet, have fundamentally transformed how retailers compete in the marketplace. In a similar vein, emerging interactive technologies can be expected to significantly alter the retailing landscape through their impact on retailing strategy and operations. Furthermore, it is conceivable that certain emerging interactive technologies will be perceived by some retailers as enablers (tools to more effectively compete in the marketplace) and by other retailers as disruptors of the present ways of doing business. Interactive technologies can either be generic, a technology that is readily available from an information technology (IT) vendor and is widely adopted by retailers, or proprietary. An interactive technology that is proprietary can enable a firm to generate economic rents from the innovation for an extended duration of time. Investing in a generic interactive technology, however, may be perceived as a cost of doing business for a retailer, and not a potential source of sustainable competitive advantage. However, a retailer's complementary resource endowments may enable the retailer to more effectively leverage a generic technology relative to its competitors and thereby achieve a sustainable competitive advantage. In this paper, we review the related literature, develop a process model delineating the mechanisms by which an interactive technology can affect and necessitate changes in retailers' strategies and identify directions for future research.  相似文献   
999.
An attempt is made in this article to redefine underemployment and unemployment without making reference to an excess supply of labor or any causal mechanism of unemployment. Instead, underemployment and unemployment are defined in terms of equity which draws upon the individual's preferences. A specific proposal is that underemployment be defined by the presence of contribution inequity relative to at least half the persons employed in a field that the underemployed person might prefer to move into. Empirically, most recent survey data on preferences for contingent and other nontraditional employment are used to illustrate the application of the concept. The major finding is that nearly 10 million Americans in the nontraditional workforce are underemployed.  相似文献   
1000.
Firms increasingly rely on suppliers to perform tasks in new product development (NPD). Research has only recently begun to focus on the processes to manage this supplier development responsibility, and has hardly investigated how firms collect and analyze information regarding the cost and performance of alternative supplier offerings. Our study addresses this gap, through a field survey among 144 paired samples of project leaders and cost analysts involved in the same NPD projects. On the basis of literature and qualitative research, we conceptualize a substantive model. We first use a substantive validity assessment to vet the measures for the proposed constructs. We then test the substantive model with structural equation modeling using a multiple‐sample analysis. The results strongly show that monetary quantification of differences and detail gathering play significant roles in successfully leveraging supplier development responsibility. The findings support the hypothesis that the extent of development responsibility that suppliers have leads the development team to a more focused monetary quantification of the differences in alternative supplier offerings. Monetary quantification of differences has a significant, positive effect on the extent of supporting‐detail gathering and on the development speed of the project, whereas supporting‐detail gathering has a significant, positive effect on the product advantage of the new product as well as development speed. These findings are robust across the two functional perspectives. Our study complements the literature on interfirm control and monitoring by demonstrating the effects of selective and focused output controls.  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