全文获取类型
收费全文 | 14293篇 |
免费 | 224篇 |
专业分类
财政金融 | 2279篇 |
工业经济 | 1597篇 |
计划管理 | 2358篇 |
经济学 | 3213篇 |
综合类 | 97篇 |
运输经济 | 84篇 |
旅游经济 | 204篇 |
贸易经济 | 1964篇 |
农业经济 | 735篇 |
经济概况 | 1942篇 |
信息产业经济 | 1篇 |
邮电经济 | 43篇 |
出版年
2020年 | 113篇 |
2019年 | 185篇 |
2018年 | 279篇 |
2017年 | 253篇 |
2016年 | 249篇 |
2015年 | 156篇 |
2014年 | 288篇 |
2013年 | 1122篇 |
2012年 | 433篇 |
2011年 | 714篇 |
2010年 | 567篇 |
2009年 | 544篇 |
2008年 | 482篇 |
2007年 | 445篇 |
2006年 | 399篇 |
2005年 | 323篇 |
2004年 | 300篇 |
2003年 | 289篇 |
2002年 | 300篇 |
2001年 | 229篇 |
2000年 | 272篇 |
1999年 | 223篇 |
1998年 | 217篇 |
1997年 | 192篇 |
1996年 | 215篇 |
1995年 | 191篇 |
1994年 | 197篇 |
1993年 | 193篇 |
1992年 | 211篇 |
1991年 | 212篇 |
1990年 | 209篇 |
1989年 | 184篇 |
1988年 | 149篇 |
1987年 | 159篇 |
1986年 | 175篇 |
1985年 | 256篇 |
1984年 | 230篇 |
1983年 | 203篇 |
1982年 | 203篇 |
1981年 | 204篇 |
1980年 | 195篇 |
1979年 | 194篇 |
1978年 | 170篇 |
1977年 | 156篇 |
1976年 | 155篇 |
1975年 | 153篇 |
1974年 | 117篇 |
1973年 | 117篇 |
1972年 | 108篇 |
1971年 | 83篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
971.
Isumo Bergmann Daniel Butzke Lothar Walter Jens P. Fuerste Martin G. Moehrle Volker A. Erdmann 《R&D Management》2008,38(5):550-562
In this paper, we are going to present a method for detecting the risks of patent infringement by evaluating similarities between patent documents on the basis of semantic patent analysis. This approach enables the user to visualize similarities in the contents on a semantic patent map by means of multi‐dimensional scaling. The effectiveness of the semantic patent map has already been demonstrated by Dressler (2006) with regard to patents of seal technology, in which documents are commonly kept short and the extracted contents are concise. This paper will open out to the field of biotechnology, where patents can easily comprise several hundreds of pages. The method presented here conveys an interdisciplinary approach and combines computer‐aided natural language processing with domain‐specific expertise of biochemical processes. This is illustrated by an authentic case of infringement involving two manufacturers of DNA chips. Our experiment will show how the infringement case is visualized on a patent map based on semantic patent analysis. This experiment can be compared with the search for a needle in a haystack, the two competitive patents representing significantly conflicting ‘needles.’ From an approximate number of 4,000 patents in the current US Class 435/6, a set of patents was selected that included the ‘needles’ mentioned. This paper will point out how such mutual interference can be detected by way of semantic patent analysis, and what advice may be given to R&D managers who are faced with the risk of patent infringement. 相似文献
972.
R. Glenn Richey Jr. Author Vitae Timothy S. Kiessling Author Vitae Mert Tokman Author Vitae Vivek Dalela Author Vitae 《Industrial Marketing Management》2008,37(4):394-406
This research suggests that firms considering a merger and acquisition strategy need to pay attention to the relationship marketing managers of the target firm and the implicit agreements that have kept them with the target firm. The results of this study convey that the joint activity of maintaining the implicit contracts and retaining the relationship marketing managers have a stabilizing and positive impact on the productivity of subordinate marketing employees. These employees are a key success factor that enables the target firm to function effectively after the acquisition. 相似文献
973.
Carmen Berne Author Vitae M.E. García-Uceda Author Vitae 《Industrial Marketing Management》2008,37(5):565-579
An organizer of trade shows (TSs) need to know the framework of criteria used by potential visitors in their ex-ante evaluation of trade shows. This paper comes to fill a gap in the published research, aiming to answer two research questions: which criteria are important for visitors in evaluating TSs to visit? And which is the underlying structure of criteria? A sample of retailers was interviewed and, after using a Confirmatory Factor Analysis, a measurement model was identified. The results confirm the underlying structure suggested by the integration of separate criteria or elements previously identified in other studies. Also, that the changes in the marketing orientation of companies have affected the evaluation criteria used by visitors. Additionally, the results show differences between visitants and exhibitors. The main disparity is the non-relevance of the marketing research criteria: TSs are a good marketing research tool for exhibitors but much more limited for visitors. 相似文献
974.
Tracy Gonzalez-Padron Author Vitae G. Tomas M. Hult Author Vitae Roger Calantone Author Vitae 《Industrial Marketing Management》2008,37(1):69-82
Purchasing managers are expected to balance costs, innovation, supplier management, and corporate social responsibility while coordinating expanding areas of the corporation. The increased responsibilities and pressures to innovate brings purchasing managers into potentially increasingly difficult ethical dilemmas. In this study, we examine the relationships between organizational culture, learning, entrepreneurial innovation, and purchasing outcomes in different ethical climates. To address external business conditions that may influence innovation in purchasing, we also examine the moderating effects of technological and market turbulence. Data from 200 purchasing managers in multinational corporations were used to test the relationships through structural equation modeling. We find that entrepreneurial innovation positively affects the quality of the relationships among sourcing participants when operating in a climate valuing ethics. The study results are particularly relevant for managers concerned that establishing an ethical climate may restrict innovation in the purchasing process. 相似文献
975.
Chia-Wen Hsu Author Vitae Homin Chen Author Vitae Lichung Jen Author Vitae 《Industrial Marketing Management》2008,37(6):677-685
In this paper, we examine the different resource linkages sought by manufacturing firms through strategic alliance. We look closely at the impact of manufacturing activities on choice of resource linkage. Using a sample of Taiwanese firms, we found that product development ability and marketing distribution channels are the top priority resource linkages that Taiwanese manufacturing firms seek to establish. The authors also found it interesting that marketing know-how was not a resource commonly sought by Original Design and Manufacturing (ODM) firms, nor by Own-Brand Manufacturing (OBM) firms. Some implications are further discussed. Instead of outsourcing production to external suppliers, Taiwanese OBM firms remained committed to manufacturing as a core competence when they established their own brands overseas. 相似文献
976.
977.
978.
Susan M. Keaveney Author Vitae 《Industrial Marketing Management》2008,37(6):653-663
Marketer-engineer conflict is a pervasive and as-yet unresolved problem of critical importance to high-technology companies. This study updates and extends marketing literature by applying qualitative research methods including the critical incident technique to examine the causes of conflict between marketers and engineers in high-technology companies. Narratives from both marketers and engineers are interpreted from an attribution theory perspective as well as in the context of recent management research on interfunctional conflict. Results draw attention to a high proportion of personal attributions, indicating high levels of relationship-conflict; these results are in contrast to the task-conflict typically addressed by the marketing literature. Discussion highlights the changes in high-technology organizational culture since first by described by Workman 15 years ago [Workman, J. (1993). Marketing's limited role in new product development in one computer systems firm. Journal of Marketing Research, 30 (4), 405-421.], and recommendations for managers are offered. 相似文献
979.
Richard Fletcher Author vitae 《Industrial Marketing Management》2008,37(8):953-964
This article explores a range of internationalisation options in terms of their adequacy in explaining the patterns of internationalisation undertaken by contemporary organizations. It is argued that there is a life cycle in the internationalisation of firms and that existing explanations of internationalisation cater for some, but not all, elements in this life cycle. The paper then outlines a longitudinal study of the internationalisation of an Australian firm from its early tentative involvement via export in the 1960's to its acquisition by an overseas firm in 2000. This study shows that network embeddedness appears to offer the most comprehensive explanation for the international life cycle of contemporary organizations. 相似文献
980.
Nicholas G. Paparoidamis Thi Thanh Huong Tran Leonidas C. Leonidou Athina Zeriti 《Journal of Product Innovation Management》2019,36(6):824-847
Eco‐innovations are an effective way for companies to strategically align themselves with customers’ growing environmental concerns. Despite their crucial role, scant research has focused on eco‐innovative product designs. Drawing from the sustainability and innovation literature, this article proposes that in the design of an eco‐innovation, its degree of innovativeness, level of eco‐friendliness, and detachability significantly affect consumers' adoption intentions. This article develops various conceptual models tested through three independent online experiments with U.S. consumers. The findings support the hypotheses and provide useful insights into the underlying mechanisms of how and why consumers respond to eco‐innovative product designs across various high‐tech product categories. Specifically, the results show (1) a positive effect of innovativeness degrees of eco‐innovative attributes on consumers' perceptions of product eco‐friendliness and on their adoption intentions as well as a significant moderating role of consumers' need for cognition (Study 1); (2) a positive influence of eco‐friendliness levels of eco‐innovative attributes on consumer adoption intentions in the case of high‐complexity products but not for low‐complexity products, emphasizing the need to adopt different approaches when developing eco‐innovations to ensure favorable consumer reactions (Study 2); and (3) a significant impact of the detachability of eco‐innovative attributes on consumers' perceptions of trade‐offs between environmental benefits and product functionality and on their intentions to adopt eco‐innovations (Study 3). These findings add to existing theoretical knowledge, provide actionable managerial implications, and identify fruitful avenues for future research. 相似文献