全文获取类型
收费全文 | 2626篇 |
免费 | 113篇 |
国内免费 | 30篇 |
专业分类
财政金融 | 197篇 |
工业经济 | 109篇 |
计划管理 | 665篇 |
经济学 | 397篇 |
综合类 | 283篇 |
运输经济 | 25篇 |
旅游经济 | 66篇 |
贸易经济 | 337篇 |
农业经济 | 401篇 |
经济概况 | 288篇 |
信息产业经济 | 1篇 |
出版年
2024年 | 18篇 |
2023年 | 42篇 |
2022年 | 47篇 |
2021年 | 71篇 |
2020年 | 98篇 |
2019年 | 79篇 |
2018年 | 57篇 |
2017年 | 57篇 |
2016年 | 67篇 |
2015年 | 86篇 |
2014年 | 228篇 |
2013年 | 208篇 |
2012年 | 196篇 |
2011年 | 241篇 |
2010年 | 165篇 |
2009年 | 155篇 |
2008年 | 139篇 |
2007年 | 186篇 |
2006年 | 145篇 |
2005年 | 105篇 |
2004年 | 95篇 |
2003年 | 90篇 |
2002年 | 53篇 |
2001年 | 42篇 |
2000年 | 36篇 |
1999年 | 29篇 |
1998年 | 7篇 |
1997年 | 3篇 |
1996年 | 11篇 |
1995年 | 4篇 |
1994年 | 1篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1981年 | 1篇 |
排序方式: 共有2769条查询结果,搜索用时 15 毫秒
51.
The purpose of this paper is to examine the performance of an important set of momentum-based technical trading rules (TTRs) applied to all members of the Dow Jones Industrial Average (DJIA) stock index over the period 1928–2012. Using a set of econometric models that permit time-variation in risk-adjusted returns to TTR portfolios, the results reveal that profits evolve slowly over time, are confined to particular episodes primarily from the mid-1960s to mid-1980s, and rely on the ability of investors to short-sell stocks. These findings are demonstrated to be consistent with theoretical models that predict a relationship between TTR performance and market conditions. 相似文献
52.
This paper studies the equilibrium determinacy properties of a simple interest rate rule in a small open economy subject to currency substitution (i.e., the use of a foreign currency for domestic transactions) and risk premia on foreign borrowing. It shows that if currencies are substitute in the provision of liquidity services the rule׳s response to inflation has to be sufficiently above unity for the equilibrium to be locally determinate. This reinforced Taylor principle requirement appears to be more binding in economies characterized by a larger elasticity of currency substitution, more debt-elastic country risk premia, and intermediate degrees of dollarization in transactions. 相似文献
53.
林海 《世界标准化与质量管理》2014,(8):41-43
本文根据胶质含量测定试验方法的要求,以车用汽油中胶质含量(包括未洗胶质含量和溶剂洗胶质含量)测定为例,探讨了0.5单位数值修约、极限数值的表示和判定在胶质含量测定数据处理和结果判定中的应用。目的在于使车用汽油产品检测工作中在数据处理、报告和结果判定方面更加规范和统一。 相似文献
54.
《International Journal of Forecasting》2020,36(4):1541-1562
Whether investor sentiment affects stock prices is an issue of long-standing interest for economists. We conduct a comprehensive study of the predictability of investor sentiment, which is measured directly by extracting expectations from online user-generated content (UGC) on the stock message board of Eastmoney.com in the Chinese stock market. We consider the influential factors in prediction, including the selections of different text classification algorithms, price forecasting models, time horizons, and information update schemes. Using comparisons of the long short-term memory (LSTM) model, logistic regression, support vector machine, and Naïve Bayes model, the results show that daily investor sentiment contains predictive information only for open prices, while the hourly sentiment has two hours of leading predictability for closing prices. Investors do update their expectations during trading hours. Moreover, our results reveal that advanced models, such as LSTM, can provide more predictive power with investor sentiment only if the inputs of a model contain predictive information. 相似文献
55.
《The British Accounting Review》2020,52(5):100829
This paper explores the relative influence of the accounting academy and accountancy professional associations in the debate concerning the profile and quality of accounting education research. This research analyses 13 semi-structured interviews undertaken with members of key accounting professional associations in Australia, New Zealand (ANZ) and the United Kingdom and Ireland (UKI). The paper makes a theoretical contribution by the novel application of the institutional logics theory to the literature concerning professional accounting associations (PAAs) demonstrating the dominant commercial logic of the education function and the more traditional fiduciary logic of the technical function. The research finds that the primary stakeholders in the professional accounting curriculum development model are the PAAs and employers, whilst the accounting academy is relatively absent. The relative independence of the education and research and technical functions within PAAs is also identified: academic research and technical activity has little influence on professional education and vice versa. However, PAAs’ funding of academic research is common across all four countries for brand recognition and in some instances to influence policy rather than informing the professional curriculum. 相似文献
56.
ABSTRACTThis paper considers the extent to which the monetary policy operations of three major central banks can be regarded as an application of Proportional-Integral-Derivative (PID) control rules. The paper outlines the general PID framework and estimates a series of dynamic models to identify how interest rate policy adjustments are affected by the rate of inflation and the level of macroeconomic activity. The paper examines data for the UK, the USA and the Eurozone. The results suggest that the PID rules can provide a useful theoretical and empirical framework for estimating central bank responses to the inflation and macroeconomic activity variables by improving the explanatory power of the Taylor rule model and determining the effect of the parameters. 相似文献
57.
随着我国煤矿开采深度的不断加大,煤层的透气性逐渐降低,而瓦斯的压力、浓度、放散量和速度则不断升高,因此加大瓦斯治理力度尤为关键。本文我们将针对当前我国煤矿瓦斯治理的现状,针对当前工作中存在的问题,提出煤矿瓦斯治理工作方面的意见和措施,以期能够提高煤矿的安全性,减少煤矿瓦斯事故的发生。 相似文献
58.
Mobile payments are services that use mobile devices to make payments. When digitalization moves across channel boundaries, online to offline channel retail will expand. Online to offline retailing will become the future retail owner stream and retail operators will move from cross-channel or multi-channel to omni-channel. This study investigates a market survey in Taiwan developing a data mining analytics including clustering analysis and association rules based on a snowflake schema database design. The role of mobile payment is determined in terms of new retail payment mechanism that promotes a better consumer purchase experience in an online to offline business environment. 相似文献
59.
Nicols Cachanosky 《Australian economic papers》2019,58(4):365-374
The growing literature on Bitcoin can be divided into two groups. One performs an economic analysis of Bitcoin focusing on its monetary characteristics. The other one takes a financial look at the price of Bitcoin. Interestingly, both of these groups have not given much more than passing comments to the problem of whether or not Bitcoin has the right monetary rule in order to become a well‐established currency. This paper argues that Bitcoin in particular, and cryptocurrencies in general, do not have a good monetary rule and that this shortcoming seriously limits its prospect of becoming widely used money. 相似文献
60.
Color psychology plays important roles in product packaging, the retail environment, and online marketing. This study analyzed current practices related to color composition in tourism-related photographs on Instagram. Data mining and pictorial content analysis were adopted to investigate how lightness, chroma, and hue may influence Instagram posts' popularity. Generally, individuals appeared more likely to respond to brighter and more saturated destination pictures. Orange, yellow, blue, and violet contributed significantly to post popularity based on different photographic typologies. Overall, color is a complex construct that functions within diverse dimensions and can enrich tourists’ destination-related perceptions. Based on brand post popularity and color theories, the study findings provide valuable implications for effective and efficient destination promotion via Instagram. Relevant limitations and future directions are also discussed. 相似文献