全文获取类型
收费全文 | 22833篇 |
免费 | 485篇 |
专业分类
财政金融 | 4050篇 |
工业经济 | 1609篇 |
计划管理 | 3923篇 |
经济学 | 5390篇 |
综合类 | 244篇 |
运输经济 | 176篇 |
旅游经济 | 341篇 |
贸易经济 | 3772篇 |
农业经济 | 1140篇 |
经济概况 | 2596篇 |
信息产业经济 | 3篇 |
邮电经济 | 74篇 |
出版年
2023年 | 110篇 |
2021年 | 149篇 |
2020年 | 287篇 |
2019年 | 454篇 |
2018年 | 498篇 |
2017年 | 526篇 |
2016年 | 517篇 |
2015年 | 351篇 |
2014年 | 565篇 |
2013年 | 2398篇 |
2012年 | 776篇 |
2011年 | 813篇 |
2010年 | 700篇 |
2009年 | 794篇 |
2008年 | 729篇 |
2007年 | 637篇 |
2006年 | 608篇 |
2005年 | 531篇 |
2004年 | 462篇 |
2003年 | 474篇 |
2002年 | 421篇 |
2001年 | 501篇 |
2000年 | 457篇 |
1999年 | 415篇 |
1998年 | 471篇 |
1997年 | 423篇 |
1996年 | 421篇 |
1995年 | 359篇 |
1994年 | 369篇 |
1993年 | 353篇 |
1992年 | 363篇 |
1991年 | 380篇 |
1990年 | 345篇 |
1989年 | 254篇 |
1988年 | 263篇 |
1987年 | 269篇 |
1986年 | 249篇 |
1985年 | 359篇 |
1984年 | 354篇 |
1983年 | 332篇 |
1982年 | 284篇 |
1981年 | 285篇 |
1980年 | 283篇 |
1979年 | 276篇 |
1978年 | 225篇 |
1977年 | 183篇 |
1976年 | 182篇 |
1975年 | 162篇 |
1974年 | 149篇 |
1973年 | 148篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
201.
A Consumer-Based Approach to Designing Product Line Extensions 总被引:1,自引:0,他引:1
A high proportion of new product introductions entail line extensions (e.g., new flavors, sizes, convenience packs, features) rather than totally new products. An attendant problem with line extending involves the possibility of cannibalization of the firm's current products. Paul Green and Abba Krieger describe an approach for designing line extensions that employs consumer tradeoff data and a variety of search heuristics to find "optimal" extensions that explicitly consider the cannibalization of current offerings. The methodology is applied to a case in which an agricultural chemicals firm is introducing a new soybean herbicide. 相似文献
202.
This paper examines Stackelberg price leadership in a spatially competitive model with infinitely many stores on an infinite line. A Stackelberg price leader charges significantly more than the pure Nash equilibrium price, induces its neighbors to charge somewhat more than the pure Nash equilibrium price, and increases its profits. Under Nash equilibrium, collusion of two stores makes a difference to prices only if the colluding stores are nearest neighbors. Under Stackelberg price leadership, collusion makes a difference to prices even if the stores are not nearest neighbors. 相似文献
203.
High transaction costs are detrimental to the efficient operation or existence of markets for inputs and outputs. The cost of information and the costs associated with the search for trade partners, the distance to formal markets and contract enforcement are likely to influence the marketing of food crops. This study hypothesises that the level of income generated from food-crop sales by small-scale farmers in the Impendle and Swayimana districts of KwaZuluNatal is influenced by transaction costs and certain household and farm characteristics. Regression analysis shows that the depth of marketing methods is significantly influenced by transaction cost proxies, such as cooperation with large commercial farmers and ownership of means of transport. Results from a block-recursive regression analysis show that the level of crop income generated is determined by the depth of marketing methods, the size of allocated arable land and off-farm income. Households with lower transaction costs, sizeable allocated land and off-farm income can be expected to generate higher income from food crops. Investment in public goods such as roads, telecommunications and an efficient legal system (to uphold commercial contracts), as well as farmer support services (input supply, extension, marketing information and research), would probably raise farm and non-farm income by reducing transaction costs. This would increase the effective demand for locally produced goods and services, thus contributing to rural employment and livelihoods within rural communal areas. 相似文献
204.
We revisit a significant research topic on exchange rate behavior by restating the test procedures with an appropriate econometric methodology to re-examine three aspects. (i) Does the inflation (price) factor affect nominal exchange rate? (ii) Do relative interest rates affect a country’s exchange rate? (iii) Do the price and interest rate effects hold if controls for non-parity factors are embedded in tests? The quarterly data series for this study are taken over 55 years. The traditional parity condition model with price and interest rate as criterion variables is extended to take into account recently-verified non-parity factors, namely trade, productivity and foreign reserves. The results affirm that both parity factors and also the non-parity factors significantly affect the exchange rates of Canada, Japan, the United Kingdom and the United States. In our view, these findings relating to four free-floating currencies help extend our knowledge on how currency behavior is consistent with parity and non-parity theorems using a relevant methodological approach in this study. 相似文献
205.
206.
This paper presents a preliminary analysis of third party complaint handling mechanisms, based on data obtained from the Hawaii Office of Consumer Protection. Specifically, the study focuses on the types of complaints processed by the Agency, the factors which affect the redress received by consumers and the length of investigation time. 相似文献
207.
208.
209.
210.
The transparency that journalists and newsrooms can produce for their audience has long been regarded as a rather marginal criterion for journalistic quality. But new transparency models??due to the interactivity, immediacy, archiving capacity and the absent limitation of space in the internet??offer greater potentials than classical instruments in print and broadcasting. In comments, web videos, blogs, twitter feeds and social networks, journalists discuss with users and publicly account for editorial decisions. Transparency is fashionable in the digital public sphere; its evaluation, however, is not clear, but ambiguous and complex. This paper conceptualizes (self-)transparency and qualitatively classifies the available instruments in a three-dimensional matrix model. This is to facilitate the analysis of problematic areas and potential conflicts: Newsrooms demonstrating open self-reflection dismiss the ideal of ??objective journalism??. Yet, transparency is not only an ethical demand, but is also supposed to strengthen trust in journalistic products because it permits quality evaluations by the audience. An experiment shows, for the first time, that self-transparency has an effect on trust in some aspects but not as a basic principle. Analysing this interdependency, we have to distinguish between transparency of process and of product as well as between different media. 相似文献