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排序方式: 共有128条查询结果,搜索用时 15 毫秒
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The short, well-documented market life of generations of dynamic random access memory (DRAM) computer chips makes them an excellent “model organism,” like the fruit fly, for study of evolution, in this case technological. Using classic models of logistic growth, substitution, and learning, we examine the global dynamics of eight generations of DRAMs and forecast the market characteristics of the next DRAM generations. 相似文献
123.
New Evidence on Home Prices from Freddie Mac Repeat Sales 总被引:5,自引:0,他引:5
The weighted repeat sales price index methodology recently reported in Case and Shiller [5] [6] is applied to a dataset of over eight million loans bought by the Federal Home Loan Mortgage Corporation over the last twenty years. Regional price indices are reported and compared to indices from other sources. Statistical issues in the creation of the index, both technical and due to sample selectivity of the Freddie Mac dataset, are extensively discussed. It is found that the new index grows at a rate similar to other indices up until 1985, after which time it grows at a significantly higher rate. 相似文献
124.
Jesse Edgerton 《International Tax and Public Finance》2013,20(5):769-784
Recent literature has claimed that the 2003 U.S. dividend tax cut caused a large increase in aggregate dividend payouts. I document four simple facts that call this claim into question. First, the post-tax cut increase in dividend payouts coincided with a surge in corporate profits, such that the dividend payout ratio did not rise. Second, share repurchases increased even more rapidly than dividend payouts. Third, dividend payouts by Real Estate Investment Trusts also rose sharply, even though they did not qualify for reduced taxation. Finally, the stock market was forecasting an increase in dividend initiations by mid-2002, before the tax cut had been proposed. 相似文献
125.
Leader‐Member Exchange,Group‐ and Individual‐Level Procedural Justice and Reactions to Performance Appraisals 下载免费PDF全文
Shaun Pichler Arup Varma Jesse S. Michel Paul E. Levy Pawan S. Budhwar Arti Sharma 《人力资源管理》2016,55(5):871-883
Previous research has established that relationships with authority figures and procedural justice perceptions are important in terms of the way in which employees react to organizational procedures that affect them. What is less clear are the reasons why exchange quality with authorities is related to perceptions of process fairness and the role of procedural justice climate in this process. Results indicate that individual‐level perceptions of procedural justice, but not performance ratings, partially mediate the relationship between exchange quality and reactions to performance appraisals, and that procedural justice climate is positively related to perceptions of procedural justice and appraisal reactions. These results support a more relational than instrumental view of justice perceptions in organizational procedures bound by exchange quality with an authority figure. Our study suggests that it is essential for managers to actively monitor and manage employee perceptions of process fairness at the group and individual levels. © 2015 Wiley Periodicals, Inc. 相似文献
126.
We analyze the impacts of an antitrust investigation on the purchasing practices of a buying collaboration and its common bidding agent. Using a repeated cross section of prices across procurement auctions that were and were not subjected to the investigation, we find that auction prices in the targeted auctions: (i) significantly increased as soon as the targets were made aware they were under investigation; (ii) remained higher as long as the investigation was open; and (iii) systematically declined to the same low pre-knowledge state after the closure of the investigation without prosecution. Finally, the counterfactual impact on auction prices by the removal of the common bidding agent and the demise of the buying collaboration at a later date was on par with the impacts of the investigation. 相似文献
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128.
Jacqueline Nicholas Rachel Halpern Marina Ziehn Jesse Peterson-Brandt Michael Leszko 《Journal of medical economics》2020,23(8):885-893
AbstractAims: The study evaluated the real-world cost of treatment in multiple sclerosis (MS) patients initiating infused disease-modifying-therapies (DMT) in the United States.Materials and Methods: This retrospective cohort study using administrative claims data included adult patients with MS initiating index infusion DMT (ocrelizumab (OCR), natalizumab (NTZ) or alemtuzumab (ATZ)) from April 2017–September 2018 with 6-months pre/12-months post-index continuous enrollment. The primary cohort included patients who had prescribed annual dosing visits indicated by the approved product label (PL): 3 OCR, 5 ATZ, and 12–13 NTZ infusion visits within the first year of initiation. Annual treatment cost was the sum of all costs on index DMT infusion visit dates. Costs were summarized for a primary and secondary cohort of patients receiving additional doses than prescribed in PL (>3 OCR, >5 ATZ, and >13 NTZ infusion visits); and an overall cohort of patients who met minimum required annual dose (≥3 OCR, ≥5 ATZ, and ≥12 NTZ), further stratified by insurance type.Results: For patients in the primary cohort (123 OCR, 18 ATZ, and 48 NTZ), mean (standard-deviation) annual cost of treatment with OCR, ATZ, and NTZ cohorts was $72,066 ($34,480), $121,053 ($51,097) and $93,777 ($38,815), respectively. Among patients initiating OCR and NTZ, 15 and 6% respectively, had additional infusion visits leading to greater costs. Mean annual costs of index infusion DMT treatment in the overall cohort (162 patients treated with OCR, 18 with ATZ, 56 with NTZ) were $80,582, $121,053, and $93,807, respectively. The mean costs for commercial enrollees were higher than those for MAPD enrollees.Limitations: Small sample size, limited population generalizability, and cost-reduction for ATZ beyond the second year need to be accounted for.Conclusions: Real-world infusion DMT treatment costs for commercially insured patients were higher than perceived expenditures based on wholesale acquisition cost and administration costs via a physician-fee schedule. Consideration of real-world costs in cost-effectiveness and treatment/coverage decisions is needed. 相似文献