武钢灵乡铁矿液化石油气库爆炸灾害评价

运用Pool Fire、UVCE、BLEVE事故数学模型,结合热辐射破坏准则,对武钢灵乡铁矿液化石油气库火灾爆炸危险性进行了定量评价,确定了液化气库区火灾的伤害-破坏程度,并提出了防护措施.     

新型危险品防爆运输箱设计及抗爆试验研究

分析和研究了目前装备使用的危险品防爆运输箱所存在的问题;采用层状复合工艺,制备了UHM-WPE-PUF复合材料,运用所设计的UHMWPE-PUF复合材料,设计和制作了一种新型危险品防爆运输箱,并进行了爆炸破坏性试验。研究表明:UHMWPE-PUF复合材料可以充分发挥UHMWPE材料的高强度、高模量特点以及PUF材料较高的吸能特性,运用该复合材料所制作的新型危险品防爆运输箱具有质量小、抗爆能力强等特点,适用于危险品的运输储存。     

核爆炸信号参数化方法及其应用

本文提出了一种经过改进的瞬态信号参数化方法并讨论了这种方法在核爆炸探测领城内的应用。重点阐述了信号建模及参数提取的计算方法,最后给出了本方法在核爆炸识别中的典型实例及计算机仿真结果。     

蒸汽驱中地下蒸汽体积增长和累积注采比的计算

本文以P.J. Closmann的蒸汽区体积增长和CarslaW、Jachar的温度分布的数学模型为基础,对油藏进行了一定的简化,提出了以恒定的注汽速度向油藏预热注汽时,地下蒸汽带体积和蒸汽所占体积的计算方法。强调在蒸汽驱过程不能忽略气态水的存在,导出了在新概念下累积注采比的计算公式。实例计算表明以本文方法计算的累积注采比更接近实际。     

雷管侧向殉爆效应特点研究

对不同起爆药的试验雷管,在改变装配条件和试验状况下,测得相应的殉爆距离,并由此而得到一些主要的影响因素和发生殉爆的简单规律。     

Ni-Al-Fe体系热爆反应活化能和反应级数的测定

本文测定了线性加热速率下的Ni50A120Fe30（wt％）体系热爆反应过程的DTA曲线．用差商法计算了该SHS热爆过程的活化能和反应级数,其结果与用燃烧被违法得到的数值基本一致．     

迷宫密封对转子系统稳定性影响研究

透平机械中汽流激振力主要产生于各种形式的密封处,其对转子系统的稳定性有不良影响。因迷宫密封的存在而引起汽流激振,其各有关结构和工况参数对转子动力特性均存在影响。本文主要分析转子转速、入口预旋比、密封间隙、压差、齿数变化等一系列因素对转子系统稳定性的影响,为迷宫密封汽流激振的防治和迷宫密封设计中各参数的最优确定提供参考依据。     

锅炉汽包接管断裂失效分析

对汽包上连接安全阀管路接管的断裂失效原因进行了综合分析 ,在排除了可能引发事故的诸多因素之后 ,找出了断裂发生的根本原因是由于安全阀排气管路的出口方向在设计上是不合理的 ,并提出了改进措施     

Local model checking and protocol analysis

This paper describes a local model-checking algorithm for the alternation-free fragment of the modal mu-calculus that has been implemented in the Concurrency Factory and discusses its application to the analysis of a real-time communications protocol. The protocol considered is RETHER, a software-based, real-time Ethernet protocol developed at SUNY at Stony Brook. Its purpose is to provide guaranteed bandwidth and deterministic, periodic network access to multimedia applications over commodity Ethernet hardware. Our model-checking results show that (for a particular network configuration) RETHER makes good on its bandwidth guarantees to real-time nodes without exposing non-real-time nodes to the possibility of starvation. Our data also indicate that, in many cases, the state-exploration overhead of the local model checker is significantly smaller than the total amount that would result from a global analysis of the protocol. In the course of specifying and verifying RETHER, we also identified an alternative design of the protocol that warranted further study due to its potentially smaller run-time overhead in servicing requests for data transmission. Again, using local model checking, we showed that this alternative design also possesses the properties of interest. This observation points out one of the often-overlooked benefits of formal verification: by forcing designers to understand their designs rigorously and abstractly, these techniques often enable the designers to uncover interesting design alternatives.     

Saving Space by Fully Exploiting Invisible Transitions

Checking that a given finite state program satisfies a linear temporal logic property suffers from the state explosion problem. Often the resulting lack of available memory is more significant than any time limitations. One way to cope with this is to reduce the state graph used for model checking. We present an algorithm for constructing a state graph that is a projection of the program's state graph. The algorithm maintains the transitions and states that affect the truth of the property to be checked. Especially in conjunction with known partial order reduction algorithms, we show a substantial reduction in memory over using partial order methods alone, both in the precomputation stage, and in the result presented to a model checker. The price of the space reduction is a single additional traversal of the graph obtained with partial order reduction. As part of our space-saving methods, we present a new way to exploit Holzmann's Bit Hash Table, which assists us in solving the revisiting problem.