首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2378篇
  免费   36篇
  国内免费   3篇
财政金融   484篇
工业经济   98篇
计划管理   472篇
经济学   648篇
综合类   180篇
运输经济   71篇
旅游经济   22篇
贸易经济   181篇
农业经济   60篇
经济概况   201篇
  2024年   1篇
  2023年   19篇
  2022年   51篇
  2021年   79篇
  2020年   109篇
  2019年   59篇
  2018年   48篇
  2017年   81篇
  2016年   85篇
  2015年   55篇
  2014年   138篇
  2013年   209篇
  2012年   167篇
  2011年   198篇
  2010年   136篇
  2009年   131篇
  2008年   166篇
  2007年   145篇
  2006年   164篇
  2005年   93篇
  2004年   74篇
  2003年   52篇
  2002年   33篇
  2001年   28篇
  2000年   14篇
  1999年   23篇
  1998年   15篇
  1997年   4篇
  1996年   5篇
  1995年   4篇
  1994年   4篇
  1993年   3篇
  1992年   2篇
  1991年   1篇
  1990年   3篇
  1989年   3篇
  1988年   5篇
  1987年   2篇
  1985年   1篇
  1984年   3篇
  1983年   1篇
  1982年   1篇
  1981年   1篇
  1980年   1篇
排序方式: 共有2417条查询结果,搜索用时 15 毫秒
81.
郁国培 《现代财经》2007,27(8):22-25
现代商业银行经营竞争日趋激烈,产品品种层出不穷,盈利模式日新月异,迫切需要精确的成本信息来确定产品的真实盈利情况.然而,我国商业银行大都还采用传统的成本核算方法,核算出的银行产品成本是不完全的.为给银行管理决策提供更完全的相关信息,我国商业银行应使用作业成本法.就我国商业银行作业成本法的应用及须注意的问题作初浅探讨,希望对商业银行应用作业成本法有一定的参考.  相似文献   
82.
学术界迄今为止缺乏权威、公认的人力资源个人价值评估方法。本文以成都思盈科技有限公司作为实证样本,基于岗位相对权重与岗位绩效评估值,提出贡献价值系数这一指标,设计了一种新型的人力资源个人价值评估模型——贡献价值系数法。  相似文献   
83.
The question of whether private firms should contract out for products and services or provide them internally (i.e. become more vertically integrated) has been a topic that has concerned scholars for many years. This article argues that the transaction costs in local contracting choices are linked to the characteristics of political systems that influence political and administrative uncertainty. Our analysis examines the transaction costs that result from executive turnover. Specifically, we are concerned with how uncertainty resulting from turnover in leadership positions in city government affects the ability of a municipality to negotiate contracts, make credible commitments to suppliers and faithfully uphold and enforce contracts once they are in force. We find that manager turnover reduces the likelihood of contracting with private sector providers. Mayor turnover has the opposite effect increasing contracting with both government and for-profit providers.  相似文献   
84.
This paper reports the results of a stated preference study that estimates the economic value for cleaning up acid rock drainage in Colorado's Snake River watershed. In contrast to much of the existing literature, the present study emphasizes benefit estimation for three implementing projects rather than benefit estimation for general changes in water quality or large scale water quality policy. The focus on implementing projects delivers information that is specifically relevant to current decisions being faced in the watershed. While valuation questions in most stated preference studies present costs that have no relation to actual project costs, this study presents a new cost share approach. Project costs are estimated and then valuation questions present different local cost shares to subjects. This approach facilitates stated cost variation necessary for estimating the mean of the distribution of project values without resorting to experimentally designed, fictitious stated costs. In addition to estimating the mean value, which facilitates benefit cost analysis, the study also provides median value estimates, which provide insights into the political feasibility of these projects. Study results suggest that local cost shares on the order of 20%-40%, depending on the project, are politically feasible.  相似文献   
85.
宁苗苗 《价值工程》2004,23(6):14-16
当前,许多国家加强了对环境的管制,加快了环境成本内部化的进程。本文阐述了环境成本内部化的涵义,对其效应做了理论分析,并分别论述了其对国际贸易理论和实践两个方面的影响。  相似文献   
86.
Nan Zhou   《Economics Letters》2003,80(3):295-303
Facing an informed incumbent who has cost advantages in two different states, the uninformed entrant bids cautiously due to the incumbent’s cost advantage in the low cost state. The incumbent bids aggressively, earning additional profits because of his cost advantages.  相似文献   
87.
王潇 《价值工程》2011,30(23):223-223
根据非计算机专业本科人才的培养方案,VFP数据库技术已经列入培养实用型人才的高校计算机课程的教学计划中。面对目前该课程教学效果欠佳,学生学习愿望低下的状态,笔者提出自己在教学过程中的感悟,主要通过任务驱动法和案例法相结合应用在VFP数据库的教学中,使这门对于非计算机专业的学生来说稍难的课程变得不再枯燥、难懂,使学生都能达到掌握数据裤技术的能力。  相似文献   
88.
We conducted laboratory experiments for analyzing the accuracy of three structured approaches (nominal groups, Delphi, and prediction markets) relative to traditional face-to-face meetings (FTF). We recruited 227 participants (11 groups per method) who were required to solve a quantitative judgment task that did not involve distributed knowledge. This task consisted of ten factual questions, which required percentage estimates. While we did not find statistically significant differences in accuracy between the four methods overall, the results differed somewhat at the individual question level. Delphi was as accurate as FTF for eight questions and outperformed FTF for two questions. By comparison, prediction markets did not outperform FTF for any of the questions and were inferior for three questions. The relative performances of nominal groups and FTF were mixed and the differences were small. We also compared the results from the three structured approaches to prior individual estimates and staticized groups. The three structured approaches were more accurate than participants’ prior individual estimates. Delphi was also more accurate than staticized groups. Nominal groups and prediction markets provided little additional value relative to a simple average of the forecasts. In addition, we examined participants’ perceptions of the group and the group process. The participants rated personal communications more favorably than computer-mediated interactions. The group interactions in FTF and nominal groups were perceived as being highly cooperative and effective. Prediction markets were rated least favourably: prediction market participants were least satisfied with the group process and perceived their method as the most difficult.  相似文献   
89.
本文论述了CCM技术以及项目进度延迟的原因。并采用基于TOC的CCM技术,对公路工程 项目进度管理进行了实证分析。通过分析结果与传统方法的比较,论证CCM技术在公路工程项目进度管 理中的实用价值。  相似文献   
90.
Objective: To provide an estimate of the annual number of super-refractory status epilepticus (SRSE) cases in the US and to evaluate utilization of hospital resources by these patients.

Methods: The Premier Hospital Database was utilized to estimate the number of SRSE cases based on hospital discharges during 2012. Discharges were classified as SRSE cases based on an algorithm using seizure-related International Classification of Diseases-9 (ICD-9) codes, Intensive Care Unit (ICU) length of stay (LOS), and treatment protocols (e.g. benzodiazepines, anti-epileptic drugs (AEDs), and ventilator use). Secondary analyses were conducted using more restrictive algorithms for SRSE.

Results: A total of 6,325 hospital discharges were classified as SRSE cases from a total of 5,300,000 hospital discharges. Applying a weighting based on hospital characteristics and 2012?US demographics, this projected to an estimated 41,156 cases of SRSE in the US during 2012, an estimated incidence rate of ~13/100,000 annually for SRSE in the US. Secondary analyses using stricter SRSE algorithms resulted in estimated incidence rates of ~11/100,000 and 8/100,000 annually. The mean LOS for SRSE hospitalizations was 16.5 days (median =11; interquartile range [IQR]?=?6–20), and the mean ICU LOS was 9.3 days (median =6; IQR =3–12). The mean cost of an SRSE hospitalization was $51,247 (median = $33,294; 95% CI = $49,634–$52,861).

Limitations: The analysis uses ICD-9 diagnostic codes and claims information, and there are inherent limitations in any methodology based on treatment protocol, which created challenges in distinguishing with complete accuracy between SRSE, RSE, and SE on the basis of care patterns in the database.

Conclusion: SRSE is associated with high mortality and morbidity, which place a high burden on healthcare resources. Projections based upon the findings of this study suggest an estimated 25,821–41,959 cases of SRSE may occur in the US each year, but more in-depth studies are required.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号