A critical look at the U.S. deceased‐donor organ procurement and utilization system

The U.S. system for procuring and utilizing deceased‐donor organs for transplantation has been studied and written about in many articles. The purpose of this paper is to examine the interactions between the elements that comprise this system, and point out improvement opportunities that may be affected through operations research/management techniques. The authors demonstrate the need for developing data‐driven and analytic tools. In fact, data is used to generate hypotheses and support claims throughout the paper. The paper also points out the need to fully leverage data that is available to researchers, and to seek data that is currently not deposited in a centralized archive.     

防空导弹反TBM作战指挥中目标分配关键问题研究

依据防空反导作战理论和目标分配的要求,对防空导弹反TBM作战指挥中目标分配的关键问题进行了研究。分别对威胁排序方法、拦截可行性条件、目标分配原则和目标分配算法进行了分析,提出了一种反TBM作战指挥中目标分配问题的算法,最后讨论了目标分配的评价问题。通过实际应用表明此方法是切实可行的。     

OFDM/OQAM系统信道估计改进方法

在基于导频的信道估计方法中,伪导频的功率决定了该信道估计方法的性能.为了提高OFDM/OQAM系统的信道估计精度,提高频谱效率,提出一种基于改进导频结构的信道估计方法.在原有导频结构的基础上,对其中功率最高的导频结构进行改进,并给出对应的信道估计方法.由于缺乏足够的接收信号先验知识,无法直接对信道进行估计.为了解决这一...     

What U.S. Navy strategists and defense planners should think about in the era of maritime great power competition

ABSTRACT

For the first time in a generation, the US Navy finds itself in an era of great power competition. As US naval strategists and defense planners begin to organise materially and conceptually to confront the strategic and operational-level challenges posed by China and Russia, what should they keep in mind? What should frame their thinking? Absorbed with the day-to-day tasks associated with managing how the fleet is being built, operated, and rationalised, these busy officers and civilians seldom can step back and gain some perspective on fundamental aspects of the security environment and relate those to naval purpose. To that end, this article provides a primer on what to keep in mind and how to think in an era of maritime great power competition.