全文获取类型
| 收费全文 | 105篇 |
| 免费 | 4篇 |
| 国内免费 | 2篇 |
专业分类
| 111篇 |
出版年
| 2025年 | 2篇 |
| 2023年 | 4篇 |
| 2022年 | 1篇 |
| 2021年 | 1篇 |
| 2020年 | 3篇 |
| 2019年 | 4篇 |
| 2018年 | 4篇 |
| 2017年 | 2篇 |
| 2016年 | 5篇 |
| 2015年 | 7篇 |
| 2014年 | 5篇 |
| 2013年 | 13篇 |
| 2012年 | 4篇 |
| 2011年 | 4篇 |
| 2010年 | 7篇 |
| 2009年 | 6篇 |
| 2008年 | 8篇 |
| 2007年 | 3篇 |
| 2006年 | 4篇 |
| 2005年 | 5篇 |
| 2004年 | 3篇 |
| 2003年 | 3篇 |
| 2001年 | 2篇 |
| 2000年 | 1篇 |
| 1998年 | 1篇 |
| 1997年 | 1篇 |
| 1995年 | 1篇 |
| 1993年 | 3篇 |
| 1992年 | 4篇 |
排序方式： 共有111条查询结果，搜索用时 0 毫秒
11.
一种采用EPROM的数字-轴角转换方法 总被引：3，自引：0，他引：3
介绍ＥＰＲＯＭ型数字－轴角转换原理和多路数字－轴角转换的实现方法。 相似文献
12.
13.
Considering a supply chain with a supplier subject to yield uncertainty selling to a retailer facing stochastic demand, we find that commonly studied classical coordination contracts fail to coordinate both the supplier's production and the retailer's procurement decisions and achieve efficient performance. First, we study the vendor managed inventory (VMI) partnership. We find that a consignment VMI partnership coupled with a production cost subsidy achieves perfect coordination and a win‐win outcome; it is simple to implement and arbitrarily allocates total channel profit. The production cost subsidy optimally chosen through Nash bargaining analysis depends on the bargaining power of the supplier and the retailer. Further, motivated by the practice that sometimes the retailer and the supplier can arrange a “late order,” we also analyze the behavior of an advance‐purchase discount (APD) contract. We find that an APD with a revenue sharing contract can efficiently coordinate the supply chain as well as achieve flexible profit allocation. Finally, we explore which coordination contract works better for the supplier vs. the retailer. It is interesting to observe that Nash bargaining solutions for the two coordination contracts are equivalent. We further provide recommendations on the applications of these contracts. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 305–319, 2016 相似文献
14.
15.
通过设置弹丸初速并研究其对单级磁阻型线圈发射器发射性能的影响,模拟分析前一级线圈弹丸出口速度对后一级线圈发射性能影响的规律;利用Ansoft有限元仿真软件进行了动态仿真,得到弹丸初速对单级磁阻型线圈发射器驱动电流、驱动线圈感应电压、电磁力、弹丸出VI速度、弹丸位移及能量转换效率等影响的规律．研究表明：弹丸初速越大,经过单级线圈加速后弹丸出口速度也越大,但弹丸出口速度增量减小;随着弹丸初速增大,能量转换效率呈现先增大后减小的趋势． 相似文献
16.
An area defense consists of several groups that act independently, i.e., do not communicate with each other. Each group has a fixed number of defenders and a controller that allocates these defenders optimally against the individual attackers comprising an attack. We analyze the effectiveness of this partially coordinated defense against a simultaneous attack of known size in which all attackers are considered to be equally lethal. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2005. 相似文献
17.
Lene Ekhaugen 《Defence Studies》2019,19(3):257-276
In complex operations such as the interventions in Iraq and Afghanistan, where multiple government ministries are involved in putting together a state’s contributions, the use of national-level coordination bodies has become more widespread. Research has taken for granted that the rationale behind these bodies reflects their declared aim – enhanced coordination as a means to improve mission effectiveness. However, they appear to have had modest effect on coordination. That notwithstanding, they seem to remain popular. This prompts us to ask why such bodies are actually established. This article – based on in-depth interviews and archival records – critically explores the establishment of Norway’s ad hoc, inter-ministerial, political-level Afghanistan Forum. Distinguishing between a structural-instrumental, a cultural-institutional and an environmental perspective from organizational theory to structure the analysis, this article shows that the declared purpose of the forum, inter-ministerial coordination, proved less important than showcasing coordination efforts and keeping the coalition together. In addition, national traditions in handling coordination challenges in the central government apparatus and powerful international reforms helped bring the forum about. This has implications for research on the rationale and effectiveness of these bodies, and also for understanding their policy relevance. 相似文献
18.
Many manufacturers sell their products through retailers and share the revenue with those retailers. Given this phenomenon, we build a stylized model to investigate the role of revenue sharing schemes in supply chain coordination and product variety decisions. In our model, a monopolistic manufacturer serves two segments of consumers, which are distinguished by their willingness to pay for quality. In the scenario with exogenous revenue sharing ratios, when the potential gain from serving the low segment is substantial (e.g., the low‐segment consumers' willingness to pay is high enough or the low segment takes a large enough proportion of the market), the retailer is better off abandoning the revenue sharing scheme. Moreover, when the potential gain from serving the low (high) segment is substantial enough, the manufacturer finds it profitable to offer a single product. Furthermore, when revenue sharing ratios are endogenous, we divide our analysis into two cases, depending on the methods of cooperation. When revenue sharing ratios are negotiated at the very beginning, the decentralized supply chain causes further distortion. This suggests that the central premise of revenue sharing—the coordination of supply chains—may be undermined if supply chain parties meticulously bargain over it. 相似文献
19.
We consider supply chain coordination in which a manufacturer supplies some product to multiple heterogeneous retailers and wishes to coordinate the supply chain via wholesale price and holding cost subsidy. The retail price is either exogenous or endogenous. The market demand is described by the market share attraction model based on all retailers'shelf‐spaces and retail prices. We obtain optimal solutions for the centralized supply chain, where the optimal retail pricing is a modified version of the well‐known cost plus pricing strategy. We further get feasible contracts for the manufacturer to coordinate the hybrid and decentralized supply chains. The manufacturer can allocate the total profit free to himself and the retail market via the wholesale price when the retail price is exogenous, but otherwise he cannot. Finally, we point out that different characteristics of the retail market are due to different powers of the manufacturer, and the more power the manufacturer has, the simpler the contract to coordinate the chain will be. © 2010 Wiley Periodicals, Inc. Naval Research Logistics, 2010 相似文献
20.
Maciej Perczyńnski Pawel Wieczorek Katarzyna Żukrowska 《Defence and Peace Economics》2013,24(1):59-74
This study — which is a country survey — deals with basic problems of the functioning of the Polish arms industry in the conditions of systemic transformation, that has taken place in Poland since 1989. It also reflects new political and military conditions and changes in the economic system, commonly called marketization. The study is focused on reasons for the bad economic state of the enterprises engaged in military production, which include a drastic drop in demand on home and foreign markets. The study discusses the main direction of activities that are planned to reshape and adjust military production to the new, changed conditions covering such problems as ownership and organization changes as well as prospects for conversion. 相似文献