全文获取类型
收费全文 | 2301篇 |
免费 | 114篇 |
专业分类
财政金融 | 477篇 |
工业经济 | 216篇 |
计划管理 | 466篇 |
经济学 | 377篇 |
综合类 | 17篇 |
运输经济 | 65篇 |
旅游经济 | 82篇 |
贸易经济 | 412篇 |
农业经济 | 150篇 |
经济概况 | 150篇 |
信息产业经济 | 1篇 |
邮电经济 | 2篇 |
出版年
2023年 | 12篇 |
2021年 | 25篇 |
2020年 | 38篇 |
2019年 | 67篇 |
2018年 | 73篇 |
2017年 | 77篇 |
2016年 | 60篇 |
2015年 | 41篇 |
2014年 | 85篇 |
2013年 | 291篇 |
2012年 | 88篇 |
2011年 | 94篇 |
2010年 | 80篇 |
2009年 | 76篇 |
2008年 | 79篇 |
2007年 | 64篇 |
2006年 | 67篇 |
2005年 | 65篇 |
2004年 | 65篇 |
2003年 | 60篇 |
2002年 | 62篇 |
2001年 | 63篇 |
2000年 | 44篇 |
1999年 | 66篇 |
1998年 | 45篇 |
1997年 | 35篇 |
1996年 | 40篇 |
1995年 | 30篇 |
1994年 | 34篇 |
1993年 | 42篇 |
1992年 | 22篇 |
1991年 | 22篇 |
1990年 | 22篇 |
1989年 | 25篇 |
1988年 | 24篇 |
1987年 | 26篇 |
1986年 | 20篇 |
1985年 | 39篇 |
1984年 | 29篇 |
1983年 | 29篇 |
1982年 | 25篇 |
1981年 | 22篇 |
1980年 | 15篇 |
1979年 | 11篇 |
1978年 | 15篇 |
1977年 | 13篇 |
1976年 | 13篇 |
1974年 | 8篇 |
1973年 | 14篇 |
1969年 | 7篇 |
排序方式: 共有2415条查询结果,搜索用时 15 毫秒
1.
2.
A growing portion of internet users rely solely on mobile devices such as smartphones for their online access. The percentage of “mobile-only” households increased from 9% in 2011 to 20% in 2015, more than doubling in only four years. As this shift continues, it leads to the question of what factors are driving the rise in mobile-only adoption. Using nationally representative data, this study uses logistic regressions and a decomposition technique to understand the trend. The decomposition reveals that a significant portion (65%) of the growth was due to an increase in the download speeds of mobile networks. An increased acceptance of mobile-only access by households aged 55 and older was also partly responsible. Understanding (and developing a response to) the trend towards mobile-only adoption will be important as organizations and governments continue to work to close the digital divide. 相似文献
3.
In the retail industry, backroom inventories are typically associated with higher labor costs and greater operational complexity. Thus, retailers look for ways to eliminate backroom inventories. A heuristic used for this purpose is the pack‐and‐a‐half rule which suggests that the shelf space allocated for a product should be at least 50% larger than the case pack quantity in which the product is delivered. Despite its popularity among retailers, the pack‐and‐a‐half rule has been ignored in the academic literature. We introduce the pack‐and‐a‐half rule, assess its impact on a retailer's profits, identify cost, demand, and product characteristics driving this impact, and propose a modification. Based on an analysis of data obtained from a retailer on 1,986 SKUs in 20 categories, we find that the pack‐and‐a‐half rule decreases a retailer's profits, on average, by 10% when applied uniformly across all SKUs. Further, this decrease is significantly affected by product depth, product width, demand elasticity, case pack quantity, and inventory carrying cost. Finally, we develop a set of modifications based on these variables where the pack‐and‐a‐half rule is applied selectively and in a stepwise fashion. These modifications limit the decrease in a retailer's profits to a range between 6% and 7%. 相似文献
4.
Motor carrier safety is an important concern of shippers, carriers, policy makers, consignees, insurance providers, and the motoring public. One aspect of carrier safety that has garnered substantial attention is whether carriers making greater use of owner–operators are more or less safe vis‐à‐vis carriers making greater use of employee drivers. Currently, conflicting theoretical predictions exist regarding the direction of this relationship. In this article, we offer a reconciliation of the alternative theoretical predictions by developing a coherent theory that merges sociological rational choice theory and theory regarding motor carrier safety. We subject our theory to empirical testing by fitting a series of seemingly unrelated regression models to a vector of safety measures tracked as part of the Federal Motor Carrier Safety Administration's Compliance, Safety, and Accountability program. Our results are consistent with our proposed theory of owner—operator safety and provide meaningful theoretical and managerial implications and directions for future research. 相似文献
5.
Australia is unusual among the world's antitrust jurisdictions in not making the pre‐notification of mergers compulsory. However, if the parties are concerned that the Australian Competition and Consumer Commission (ACCC) is likely to object to the merger, there are strong incentives for them to notify the ACCC as the regulator has developed a strong reputation for imposing heavy costs on parties that fail to notify such mergers. The result is a system of quasi‐compulsory notification that creates the strongest incentives for parties to notify the ACCC of those proposals to which it is most likely to object. This study analyses data extracted from the ACCC's merger database and the empirical results are consistent with this characterisation. Mergers reported voluntarily by the parties are found to experience longer delays to completion, and are more likely to be challenged by the ACCC, when compared with a sample of all other mergers assessed by the regulator. The results suggest that non‐compulsory notification allows the parties themselves to pre‐sort the proposed merger vis‐à‐vis its interest to the ACCC. 相似文献
6.
7.
This article investigates the determinants of real estate investment trusts (REIT) portfolio investment and institutional REIT ownership using multivariate Tobit regressions. We contend that many institutional investors take larger positions in more liquid assets like REIT stocks, as compared with private real estate equities, because of liquidity considerations. Consistent with this contention, we find that liquidity constraints are significantly related to REIT portfolio investment by institutional investors. We also find that institutional investors have different preferences for REIT stocks than do other investors; they generally prefer larger, more liquid REIT stocks. 相似文献
8.
9.
Consumer Demand For Butter, Margarine and Blends: The Role of Purchase and Household Characteristics
Brian W. Gould 《Revue canadienne d'agroeconomie》1997,45(3):251-266
A U.S. household panel is used to estimate a model of household purchases of butter, margarine and butter/margarine blends. The econometric model accounts for the discrete purchase decisions process and the censored nature of disaggregated commodity demand. Observed market prices are "quality" adjusted for the three commodities investigated based on household and purchase characteristics. Over 90% of the reaction to a price change is found to occur with respect to the decision whether or not to consume. 相似文献
10.
L. Susan Williams 《American journal of economics and sociology》2002,61(3):681-712
This study demonstrates that place—defined in this article as labor market area (LMA)— provides a useful context for examining how youth manage gendered situations. Places vary by conditions in which gender is more, less or differently salient, and a particular mix of factors accommodates different individual outcomes. This study utilizes multi–level modeling to examine influence of LMA characteristics on over–time educational measures for young women (Center for Human Resource Research 1994). Hierarchical models determine place–level effects on both average outcomes (within and between LMAs) and attainment processes. A major finding of this study is that aggregate place effects channel personal decisions and outcomes of young women. Young women's educational aspirations are dependent on gender– specific variables such as the number of women in college or the number of young women married in a local area. Attainment depends on the percentage of women in higher education and a local labor market's average age at first marriage. Further, what are assumed to be positive environmental effects (e.g., manufacturing dominance) are based on structural advantages for men and actually depress outcomes for women. Notably, the influence of place is independent of strong individual–level determinants, including social class. 相似文献