药皮焊条焊缝脱硫的研究

通过理论分析及实验,探讨了手工电弧焊焊条药皮中添加金属镁粉的脱硫效果。研究表明：金属镁粉对焊缝金属的脱硫是有较明显效果的。     

船用锅炉排烟余热利用的研究

为了充分利用锅炉排烟余热,可将船用锅炉通风系统中配备一台燃气涡轮,在高负荷时进入烟囱前的锅炉排烟(即从经济器管束排出的烟气)流经该涡轮时所作的功可带动通风系统的压气机,但在低负荷时压气机需由燃气涡轮和辅助汽轮机联合驱动.经对该通风系统的压气机、燃气涡轮和汽轮机进行有关热力计算,结果表明:在锅炉通风系统中采用燃气涡轮来利用进入烟囱前的锅炉排烟余热,可以显著降低锅炉烟囱排烟的温度和节省蒸汽的消耗量.     

Teaching Professional Ethos

This article investigates the communication of professional ethos, the ethical standards of a profession in training, from passing on ideas of patients’ welfare in medical schools to communicating values in military academies. The article examines this through a consideration of the consequences of Wittgenstein’s discussions on the nature of language: how words and sentences acquire meaning. Wittgenstein’s rule-following paradox, the paradox that any act can be brought into correspondence with a rule and thereby that any “meaning” might be applicable to what is being taught, must make us re-evaluate assumptions about a professional ethos as a guide for professionals in their future practice. If, as Wittgenstein asserts, the meaning of a word is its use, we must abandon ideas of an essence of professional ethos encapsulated in words. Ethical standards of the professions are not reducible to a set of rules. Instead teachers must seek to expand the learner’s repertoire of responses and invite different answers rather than a pre-established correct answer.     

气溶胶灭火装置在工业供电系统中的应用

分析工业供电系统的火灾特点和原因 ,结合部分工程实例和气溶胶灭火装置的特性 ,提出该类产品在工业供电系统应用中的优势和施工中的注意事项 ,并展望其应用前景     

我国军事司法立法形式探新

选择适宜的军事司法立法形式 ,是充分发挥军事司法立法作用的重要前提。在分析外军军事司法立法形式的特点和我国军事司法立法形式的不足的基础上 ,提出了制定《统一军事司法法》的建议。     

钢结构制药厂房火灾特点及爆炸坍塌情形分析

通过对钢结构制药厂房（车间）的建筑结构、火灾特点的分析以及钢结构建筑发生坍塌和引发爆炸等情形的正确判断,为今后处置该类场所灾害事故的救援行动提供参考依据。     

新疆哈萨克族数学文化调查分析

少数民族数学文化是少数民族文化的组成部分。新疆哈萨克族人民在长期生产、生活中总结出很多简单而原始的数学知识,从数字及其运算、数的进制、度量衡、历法、几何等方面都体现出独有的特点.关注少数民族文化中的数学文化的教育意义,开发有利于边远地区少数民族学生数学学习的课程资源,编写民俗数学教育案例,是有待于进一步要研究解决的现实问题。     

直升机野战油料保障模拟优化研究

野战条件下,场站通常在前沿阵地开设野战直升机场实施伴随保障,其中油料保障主要采取飞机加油车先对直升机实施加油,后到野战机场油库领取油料这一方式进行。若将野战直升机场油料保障作为一个系统来研究,要实现适时、适量的油料保障,确定合适的飞机加油车及野战机场油库发油鹤位数量是一个关键问题。利用GPSSW语言对这一问题进行模拟,得出模拟结果并进行统计分析,经反复模拟和参数比较得到适合的参数,为部队保障提供依据。     

Bounding the optimal burn‐in time for a system with two types of failure

Burn‐in is a widely used method to improve the quality of products or systems after they have been produced. In this paper, we consider the problem of determining bounds to the optimal burn‐in time and optimal replacement policy maximizing the steady state availability of a repairable system. It is assumed that two types of system failures may occur: One is Type I failure (minor failure), which can be removed by a minimal repair, and the other is Type II failure (catastrophic failure), which can be removed only by a complete repair. Assuming that the underlying lifetime distribution of the system has a bathtub‐shaped failure rate function, upper and lower bounds for the optimal burn‐in time are provided. Furthermore, some other applications of optimal burn‐in are also considered. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004     

Two‐machine flow shop no‐wait scheduling with a nonavailability interval

We study a two‐machine flow shop scheduling problem with no‐wait in process, in which one of the machines is not available during a specified time interval. We consider three scenarios of handing the operation affected by the nonavailability interval. Its processing may (i) start from scratch after the interval, or (ii) be resumed from the point of interruption, or (iii) be partially restarted after the interval. The objective is to minimize the makespan. We present an approximation algorithm that for all these scenarios delivers a worst‐case ratio of 3/2. For the second scenario, we offer a 4/3‐approximation algorithm. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004