全文获取类型
收费全文 | 32461篇 |
免费 | 746篇 |
国内免费 | 3篇 |
专业分类
财政金融 | 4725篇 |
工业经济 | 2365篇 |
计划管理 | 6419篇 |
经济学 | 6405篇 |
综合类 | 2184篇 |
运输经济 | 195篇 |
旅游经济 | 287篇 |
贸易经济 | 4378篇 |
农业经济 | 1859篇 |
经济概况 | 4239篇 |
信息产业经济 | 20篇 |
邮电经济 | 134篇 |
出版年
2024年 | 56篇 |
2023年 | 272篇 |
2022年 | 490篇 |
2021年 | 688篇 |
2020年 | 779篇 |
2019年 | 603篇 |
2018年 | 553篇 |
2017年 | 861篇 |
2016年 | 666篇 |
2015年 | 775篇 |
2014年 | 948篇 |
2013年 | 2123篇 |
2012年 | 2249篇 |
2011年 | 3385篇 |
2010年 | 3050篇 |
2009年 | 2011篇 |
2008年 | 2148篇 |
2007年 | 1858篇 |
2006年 | 2027篇 |
2005年 | 1925篇 |
2004年 | 707篇 |
2003年 | 653篇 |
2002年 | 610篇 |
2001年 | 557篇 |
2000年 | 353篇 |
1999年 | 309篇 |
1998年 | 227篇 |
1997年 | 229篇 |
1996年 | 170篇 |
1995年 | 137篇 |
1994年 | 142篇 |
1993年 | 153篇 |
1992年 | 124篇 |
1991年 | 103篇 |
1990年 | 84篇 |
1989年 | 83篇 |
1988年 | 70篇 |
1987年 | 66篇 |
1986年 | 67篇 |
1985年 | 113篇 |
1984年 | 103篇 |
1983年 | 82篇 |
1982年 | 89篇 |
1981年 | 64篇 |
1980年 | 73篇 |
1979年 | 66篇 |
1978年 | 57篇 |
1977年 | 60篇 |
1976年 | 55篇 |
1974年 | 31篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
Drawing on the eco-innovation and resource-based view, this research attempts to contribute to the eco-innovation-performance debate by examining the effects of eco-innovation on business performance. In particular, we propose that the eco-innovation–performance relationship is contingent on environmental orientation and resources commitment. The analysis of 83 green-oriented SMEs in New Zealand suggests that eco-innovation has a positive effect on business performance. More interestingly, the findings show although environmental orientation does not directly influence business performance, it enhances the positive effect of eco-innovation on business performance. The results further suggest that green-oriented firms will reap more performance benefit of eco-innovation when they commit more organizational resources. 相似文献
992.
The Role of Product Originality,Usefulness and Motivated Consumer Innovativeness in New Product Adoption Intentions
下载免费PDF全文
![点击此处可从《Journal of Product Innovation Management》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Prior research has posited that product attributes are primary drivers of success that a firm must consider to develop a competitive advantage. Two product attributes, originality and usefulness, have been identified in the literature as significant dimensions of new product success. Customer demands differ, and more purchase intentions toward a new product depend on how consumers connect the product attributes to their own individual characteristics. Studying motivated consumer innovativeness as a personality trait may improve our understanding of the motivations for adopting innovations; however, questions remain regarding whether the effects of originality and usefulness on consumers' intentions to adopt are different when levels of these attributes are matching or dissimilar and what the relationship is between these effects and motivated consumer innovativeness. This study seeks to empirically investigate these effects and their relations by collecting data from 560 potential consumers in China. This paper uses hierarchical regression analysis to test hypotheses in four product domains as representative of higher or lower levels of usefulness and originality. The research shows that new product originality affects consumers' intentions to adopt new products only if it matches the level of new product usefulness. The results also reveal that motivated consumer innovativeness has a positive moderating role on the relationship between new product originality and consumers' new product adoption intentions when both attributes are at a lower level. The theoretical and practical implications for new product development and marketing communications are discussed. 相似文献
993.
本文深入研究了创新方法内涵,对各种创新方法进行系统梳理与分类,在产品生命周期全过程各个创新要素和创新内容进行选择、整合和优化基础上,利用复杂适应系统理论,建立多种创新方法集成与应用系统,在产品创新的整个过程中形成模块儿化的互补优势,使新产品较以往来说功能上呈现倍增,并适应进化规律,从根源上促进创新的发展。 相似文献
994.
Firms developing new products often face the challenge of making investment decisions under uncertain input–cost conditions due to the price volatilities of the materials they use. These decisions need to be made long before the final products are launched on the market. Therefore, firms that invest in the opportunity to switch materials in a timely manner will have the flexibility to react to material price changes and realize competitive advantages. However, volatile material prices may also cause a firm to delay investment. Using real‐options reasoning, this paper studies the influence of input‐cost fluctuations on the timing decision to start new product development (NPD) and thus create the follow‐on opportunity to later replace an existing product. A model that combines waiting and switching options to derive influencing factors of the flexibility value that triggers the investment is developed and tested on a sample of material substitution projects from manufacturing firms. The results show how price uncertainty of the new and the old material, their joint price development, the expected project duration, and competitive preemption are related to the propensity to delay the start of NPD. The findings provide new insights on how timing in adopting materials can be used to hedge exposure to volatile material prices. The insights are relevant for adopters and producers of new materials, as well as for policy makers who strive for supporting the diffusion of new materials. 相似文献
995.
张亮 《地质技术经济管理》2014,(5):14-19
将政府行为细化为政府效能、监管质量、法律规则和腐败控制四个变量,并对民营企业转型升级的相关指标进行量化处理,建立了衡量我国民营企业转型升级的综合指标,对政府行为对民营企业转型升级的影响进行了量化分析,得出以下结论:政府效能、监管质量和法律规则是影响民营企业转型升级的重要影响因素;政府效能与民营企业转型升级呈现正相关关系,政府效能越高,越有利于民营企业转型升级;监管质量对民营企业转型升级的影响较为显著,监管质量越高,越有助于民营企业转型升级;法律法规对于民营企业转型升级具有重要的影响作用,法律法规的执行力度越大,越有利于民营企业的转型升级;腐败控制与民营企业转型升级尽管也呈现一定的正相关关系,但并不很显著,这表明腐败控制的效果并没有直接反映为促进民营企业转型升级的重要因素. 相似文献
996.
张继亮 《地质技术经济管理》2014,(5):10-13
管理的任务在于对组织资源进行优化配置.社会资本是行政方式和市场方式之外的第三种组织资源配置方式.社会资本方式的优点明显,问题更突出.问题主要体现在组织资源配置的非均衡性.对于这个问题的解决,文章作者提供了四种路径,分别是扩大资源总量、扩大交往、宏扬主体性和强化正式制度. 相似文献
997.
Capital allocation is one of top management's primary responsibilities. Although always important, it is critical today because corporate operating returns on invested capital are at an all‐time high, while recent growth and investment have been modest, and corporate balance sheets in the U.S. have substantial cash. Yet few senior executives are sufficiently well‐versed in finance theory and methods to allocate capital as effectively as possible. Further, incentive programs that focus on meeting earnings per share often encourage behavior that is not in the best interests of long‐term shareholders. In this report, the authors begin with the premise that the goal of corporate capital allocation is to build long‐term value per share; and with that view in mind, they examine the main sources and uses of capital by the largest 1,500 U.S. companies during the last 30 years. More specifically, the authors identify the amounts of capital allocated to each of seven important alternatives, including major uses of capital such as M&Amp;A, capital expenditures, R&D, and distributions of capital to investors such as dividends and stock repurchases. And after reviewing the past allocations of capital to each of these alternatives, the authors summarize the academic research on the effects on corporate values of each of these uses of capital. The authors report that U.S. corporations fund most of their investments internally, and that M&Amp;A and capital expenditures have long been, and continue to be, the largest operating uses of capital, though both capital expenditures and growth in assets have fallen in recent years. At the same time, both corporate cash holdings and distributions to shareholders in the form of dividends and stock buybacks are at record levels. But even with such high payouts, R&D spending as a percentage of revenue by U.S. companies has remained high, and actually increased during the past decade. Finally, the authors provide a framework that can be used either internally or by outsiders to evaluate the capital allocation practices and effectiveness of a management team. This framework asks management to assess its past performance, provide realistic projections of future returns on invested capital, and evaluate their own incentive programs—all while renewing their commitment to the five principles of thoughtful capital allocation: (1) zero‐based capital allocation; (2) funding of strategies, not projects; (3) no capital rationing; (4) zero tolerance for bad growth; and (5) continuous monitoring of the value of all assets and business, and willingness to take action if and when such values are larger outside than inside the firm. 相似文献
998.
999.
Daniel H. Alai Hua Chen Daniel Cho Katja Hanewald Michael Sherris 《North American actuarial journal : NAAJ》2014,18(1):217-241
Equity release products are sorely needed in an aging population with high levels of home ownership. There has been a growing literature analyzing risk components and capital adequacy of reverse mortgages in recent years. However, little research has been done on the risk analysis of other equity release products, such as home reversion contracts. This is partly due to the dominance of reverse mortgage products in equity release markets worldwide. In this article we compare cash flows and risk profiles from the provider's perspective for reverse mortgage and home reversion contracts. An at-home/in long-term care split termination model is employed to calculate termination rates, and a vector autoregressive (VAR) model is used to depict the joint dynamics of economic variables including interest rates, house prices, and rental yields. We derive stochastic discount factors from the no arbitrage condition and price the no negative equity guarantee in reverse mortgages and the lease for life agreement in the home reversion plan accordingly. We compare expected payoffs and assess riskiness of these two equity release products via commonly used risk measures: Value-at-Risk (VaR) and Conditional Value-at-Risk (CVaR). 相似文献
1000.
Michael E Drew Adam N Walk Jason West John Cameron 《Journal of Financial Services Marketing》2014,19(4):291-303
Highly risk-averse retirees are generally advised to adopt a fixed spending strategy such as the 4% withdrawal rule. To prevent the premature depletion of a retirement portfolio, the rule attempts to proxy as the ‘safe withdrawal rate’. But a constant withdrawal rate means that retirees accumulate unspent surpluses when markets outperform and face spending shortfalls when markets underperform. While a safe withdrawal rate can prevent spending shortfalls, the opportunity cost of unspent surpluses associated with this strategy can be extreme. We apply a range of basic investment decision rules to a retirement portfolio applying various withdrawal rates and examine the probability of shortfalls over a retirement horizon. Using a block bootstrap simulation technique, we examine decision rules relating to stock and bond investments. Our results show that retirement portfolios with a bias towards stocks coupled with a decision rule that sources withdrawals from bonds and cash before stocks significantly outperforms alternative withdrawal strategies, despite the inherent increase in volatility. This finding is in direct contrast to the safe withdrawal rate conventions used in contemporary financial advice models. 相似文献