战场信息资源共享平台

针对现行指挥自动化系统在战场信息广泛共享上的差距,构建战场信息共享平台(PW IRS:P latform on W ar-F ie ld In form ation R esources Sharing)模型,提出了战场信息共享平台的体系结构,并在上述的基础上,实现了战场信息资源共享平台的实验原型。     

Burden sharing and the future of NATO: wandering between two worlds

The US role in the North Atlantic Treaty Organization (NATO) Alliance is a 65-year history of retrenchment and renewal. When Washington has sought a retrenchment from the world, it traditionally increased burden sharing pressure on Europe to do more. During times of increased global ambition, the USA reaffirmed its traditional leadership role in the Alliance and its commitment to NATO effectiveness and relevance. This cycle of NATO retrenchment and renewal, however, is halting. Though the USA will continue to go through periods of relative increases and decreases in security policy ambition, signs point to a permanent defense and security retrenchment in Europe. Germany is the ally singularly capable of filling the resulting security gap. If NATO is to avoid the drift toward irrelevance many critics have predicted, Germany will need to cast off old inhibitions toward security and defense leadership. These trends and their implications for NATO's future are explored through historical case studies and the shifting contemporary security environment.     

单一基窃听方式下B92协议的安全性研究

从概率论和信息论两个角度对单一基窃听方式下B92协议的安全性进行了研究,得出了最佳窃听角度和信源概率分布之间的关系;以马尔柯夫串联信道模型计算了Alice和Eve之间及Alice和Bob之间的信息量,并与广义量子测量窃听进行了比较,结果表明,Eve采用单一基窃听不仅能以较高概率猜中Alice发出的量子态,并且能获得较高平均互信息.得出的结论为合法通信者的安全通信和对窃听者的检测提供了标准.     

Pricing and capacity allocation strategies: Implications for manufacturers with product sharing

Emerging sharing modes, like the consumer-to-consumer (C2C) sharing of Uber and the business-to-consumer (B2C) sharing of GoFun, have considerably affected the retailing markets of traditional manufacturers, who are motivated to consider product sharing when making pricing and capacity decisions, particularly electric car manufacturers with limited capacity. In this paper, we examine the equilibrium pricing for a capacity-constrained manufacturer under various sharing modes and further analyze the impact of capacity constraint on the manufacturer's sharing mode selection as well as equilibrium outcomes. We find that manufacturers with low-cost products prefer B2C sharing while those with high-cost products prefer C2C sharing except when the sharing price is moderate. However, limited capacity motivates manufacturers to enter into the B2C sharing under a relatively low sharing price, and raise the total usage level by sharing high-cost products. We also show that the equilibrium capacity allocated to the sharing market with low-cost products first increases and then decreases. Finally, we find that sharing low-cost products with a high limited capacity leads to a lower retail price under B2C sharing, which creates a win-win situation for both the manufacturer and consumers. However, sharing high-cost products with a low limited capacity creates a win-lose situation for them.     

柴油机燃油喷油量的试验计算方法研究

介绍了一种根据外卡式传感器测量的电压波和几何供油规律计算循环喷油量的新方法,并在12150L发动机用喷油泵试验台上进行了验证.试验表明该方法能实现对喷油量的不解体测量.     

N+1式高频电力开关电源设计

探讨了N＋1式高频电力开关电源的组成和工作原理。开关电源由监控模块和整流模块组成,重点研究了均流技术和开关电源的抗干扰措施,论述了整流模块数量N＋1的选择。实际运行证明,N＋1式高频电力开关电源工作可靠,达到了预期效果。     

五位量子纠错码的各种形式

在各种量子纠错方案中五位量子纠错码被讨论得最多,本文按照正交条件,用图表对各种错误形式进行分类,再利用图表的直观性和对称性提供了一个较方便地找出５位量子纠错码各种形式的方法。     

NATO BENEFITS,BURDENS AND BORDERS: REPLY

This note implements the sensitivity analysis suggested by Sandler and re‐examines the robustness of the concordance between NATO benefits and burdens.     

NATO BENEFITS,BURDENS AND BORDERS: COMMENT

This note refutes criticism raised by Solomon about past tests used to ascertain the concordance between NATO benefits and burdens. In so doing, a case is made for keeping the benefit proxy based on exposed borders. Moreover, a truer sensitivity analysis than that offered by Solomon is suggested.     

How not to pay for the war

As a result of allied subsidy and the influence of sunk costs, the marginal cost of the Gulf War to the US was reduced to negligible size. This result is at variance with the Olson‐Zeckhauser thesis that in an alliance “the small exploit the large.” A game theoretic alternative explanation suggests that the relation between allies resembles the game of Chicken, successfully played by the US. The ability to shift the marginal costs of war in the short term raises questions about the possible underestimation of long term effects.