三种疏水催化剂耐氚辐照稳定性初步研究

为考察3种疏水催化剂Pt-SDB(SDB为苯乙烯-二乙烯苯共聚物)，Pt-PTFE（PTFE为聚四氟乙烯），Pt-C-PTFE 的耐氚辐照稳定性，将其置于1.26×10¹²Bq/L的氚水中静态辐照210 d后，对其催化交换性能及催化剂中残存氚进行分析。结果表明，3种催化剂在氚的β辐照下未发生裂解，催化剂中氚的残存量随催化剂比表面积的增加而增加，基本没有发生结构上的氚取代反应；但在氚水辐照后，3种疏水催化剂的交换性能出现了不同程度的变化，按单位质量Pt粒子计算，在测试不确定度范围内Pt-PTFE和Pt-C-PTFE的转化率没有发生明显变化，Pt-SDB(1)的转化率下降了11.2％，Pt-SDB(2)的转化率下降了16.9％。     

CYBERNETICAL ACTIONS AND MARKOV PROCESSES

A goal-oriented action that is performed by a biocybernctical system, with minimum losses, subject to some constraints, is termed cybernetical action. Actions of this kind (often related to survival, e.g., defense or predatory actions) are widespread in nature. A mathematical model of these actions, based on a special kind of operators, termed message operators (or optimization operators), is investigated in connection with the customary transition matrices used in the theory of Markov processes. It is shown that, under certain conditions, transition matrices may be regarded as a special kind of message operators; hence, most of the properties of Markov chains can be expressed in terms of the latter ones. Accordingly, a new class of “stochastic processes with optimization” is defined, which enables Markovian as well as non-Markovian evolutionary processes to be modeled in a general way. Furthermore, by taking into account some recovery phenomena (related to biological rhythms) a new model of sequential actions is suggested. It is shown that the corresponding stochastic process with optimization always involves adaptive learning (that is, the action is stored in the memory of the system, in its optimal form). Thus, by including in the mathematical model the fundamental “optimization principle” which is inherent to the nature of any biological system, a new tool is obtained, permitting to investigate some unknown aspects of the biocybernctical systems in a more general manner as compared with the customary means.     

等离子体处理对CFRP筒状件内壁活化效果的影响∗

为解决碳纤维增强树脂基复合材料（CFRP）筒状件内壁表面化学惰性较高导致与金属涂层结合强度差的问题，采用射频辉光放电对其内表面进行活化处理来提高其表面活性。通过接触角测试和红外光谱分析，探究等离子体处理气压、射频电源功率、处理时间和离子种类对活化效果的影响。结果表明，经射频辉光放电等离子体处理后 CFRP 筒状件内壁表面等离子体活化效果明显，表面能显著提高。其他工艺参数相同情况下，活化效果随气压增大先提升后降低，随射频电源功率和处理时间的增大而提高，以氧等离子体活化效果最佳。其中，在处理气压 0.5 Pa、射频电源功率 500 W、处理时间 60 min、氧等离子体条件下效果最为显著，水和二碘甲烷的接触角分别由 71.29°、49.36°降低到 4.93°、5.39°，表面能从 38.85 mJ·m^?2 提升到 74.73 mJ·m^?2 。通过红外光谱分析，经等离子体处理后的 CFRP 中 C-H 和 C≡C 等非活性键被打断，带有 C=O 的醛基和羧基活性基团增多，浸润性大幅提高。活化后的 CFRP 基体与金属薄膜的膜基结合力由不足 0.1 MPa 提升至 0.49 MPa。研究通过射频辉光放电对 CFRP 筒状件内壁表面进行活化处理，为制备高结合强度的金属涂层打下基础。     

军用ATE/ATS技术的发展

介绍了国内外军用ＡＴＥ／ＡＴＳ技术的现状及发展，并阐述其未来发展的趋势。     

基于神经网络的网络验证码识别的研究

本文首先介绍了神经网络的基本思想，提出了一种基于神经网络的网络验证码的识别方法，并利用开源的神经网络包JOONE用JAVA技术实现了验证码识别软件.最后通过训练样本对其进行了实验分析,取得了较高的识别率.     

Manufacturing control of a serial system with binomial yields, multiple production runs, and non-rigid demand: a decomposition approach

In this paper, the problem of ordering a series of production runs to meet a single make-to-order demand, where the various stages in the production process have binomial yields, is addressed. The use of additional procurement of part-finished material or reworking defective material previously made to supplement yield at any stage is considered. The costs of this and manufacture, disposal of surplus or shortage are assumed to be proportional to the numbers involved. Set-up costs may or may not be incurred. The treatment follows from, and builds on, a previous single-run analytical result by developing an approximation in which the problem is decomposed into a series of single runs.     

非洲东北部油气资源状况及投资环境分析

非洲东北部主要发育内陆坳陷盆地、裂谷盆地、离散被动大陆边缘盆地和三角洲盆地四种类型.在内陆坳陷盆地,油气主要分布在古生界和中生界;在中生代裂谷盆地,油气主要分布在中生界、新生界;在新生代裂谷盆地和三争洲盆地,油气主要分布在新生界地层中.目前,研究区内8个盆地中发现了156个油气田,7个盆地中获得了油气显示,但油气勘探程度总体较低.各国与我国建立的友好的合作基础,中生代裂谷盆地、被动大陆边缘盆地和新生代裂谷盆地具有较好好的资源前景,我国应加强在这些领域的国际合作.     

面向供应链的合作计划,预测与补给

合作计划、预测与补给（ＣＰＦＲ）是近年来提出的供应链管理方面的一个新模式，对于供应链伙伴改善合作关系、提高预测的准确和供应链效率，减少库存，提高消费者满意程度等均有重要的意义。本文论述了ＣＰＦＲ的概念和内涵，以及与其他供应链合作模式的关系，分析阐述了ＣＰＦＲ的业务模型和运作方法。     

电厂冷却塔人字型支柱混凝土缺陷处理方案思考

混凝土缺陷既是工程普遍现象，又是工程难题之一，通过分析其主要缺陷的机理、主要因素及对结构的影响，考虑采用有特性的材料，按照一定的要求和方法施工来保证结构的使用性和耐久性。