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41.
近年来,电子信息技术不断发展,设备与设备之间的信息传递方式也在不断地改进,目前比较流行的接口类型包括RS232、RS422、IISB2.0等多种类型,操控设备作为一种人机接口设备。应用范同广泛,可与多种接口对接。为了适应这种现状的需要,提高设备通用性。该文提出一种多接口冗余设计技术,适应不同场合的需要,操控设备可与多种接口设备对接。经过测试验证并在某型号系统上试用,证明其操控灵活接口应用方便,符合设计的要求。 相似文献
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Many individuals who meet criteria for borderline personality disorder have histories of childhood trauma that may have contributed to their difficulty regulating affect. Dialectical behavioral therapy focuses on helping these patients to regulate emotional states and achieve behavioral control in Stage 1 so they can tolerate therapy that is focused on trauma and emotional experiencing in a Stage 2 treatment. Although there are effective, empirically validated treatments for posttraumatic stress disorder and its subclinical presentation, there are also a significant number of patients who find these treatments difficult to tolerate. The author discusses coupling dialectical behavioral therapy, an evidence-based therapy, with internal family systems, a therapy that is both clinically promising and compatible with dialectical behavioral therapy, as a Stage 2 therapy for trauma patients who avoid other modes of treatment. (PsycINFO Database Record (c) 2011 APA, all rights reserved) 相似文献
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In this paper a new pel modification technique which preserves some topological properties of two-tone image is proposed. This technique creates more uniform gray-level blocks than were present in the originals two-tone image. This change enhances the compression efficiency of the block coding for two-tone image. The technique is applied on two different types of images and the results show that due to pel modification to compression efficiency is increased by a considerable amount. A suitable post processing smoothing technique is also proposed to recover the quality of the modified image to a great extent during decoding. 相似文献
46.
本文讨论了一类线性算子的本征值相应的投影算于的特性,给出了这类线性算子的本征向量空间与投影空间之间的关系及其维数特性。 相似文献
47.
主要研究奇异非线性二阶诺伊曼边值问题的正解个数.应用比较原理、最大值原理和上界方法得出了在一定条件下,该问题恰好有5个正解的结果. 相似文献
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从源码中抽取设计模式对于提高软件可理解性和可维护性、软件设计重用以及软件重构具有重要意义。面向Java语言提出了一种静态和动态分析相结合的源码中设计模式的抽取方法。具体地,研究了源码中设计模式抽取的静态结构分析过程,为了进一步提高设计模式实例抽取的准确率,对结构分析得到的创建型模式候选,使用创建对象的多重性分析方法进行验证,对结构分析得到的行为型模式候选,使用动态分析的方法进行验证,以区分结构相似但行为不同的模式的实例。最后实现了设计模式抽取工具并对开源软件中的模式实例进行抽取。通过实验数据,验证了设计模式实例抽取及验证方法的可行性及有效性。 相似文献
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The catalytic oxidation of ethylene to carbon dioxide in excess air has been studied atsteady state.The catalyst temperature was measured for various feed temperature and concentration.The bifurcation diagrams Which describe the dependence of the catalyst temperature on the feed gastemperature were obtained for different ethylene concentrations in the feed gas.The ignition and ex-tinction temperatures were found out and the unique and multiple steady state regions could bedetermined from these diagrams.The experimental results can be satisfactorily explained by thecatastrophe theory and singularity theory.According to the steady state multiplicity features an at-tempt to discriminate the competitive kinetic models was made for the reaction. 相似文献
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《Chemical engineering science》2003,58(13):2805-2821
The bifurcation behavior of continuous free-radical solution loop polymerization reactors is analyzed in this work. A mathematical model is developed in order to describe the impact of the recycling pump and other external reactor parts upon the process dynamics and stability. Stability analysis is performed using bifurcation theory and continuation methods. It is shown that under certain operational conditions as many as seven steady states are predicted for the loop polymerization reactor. Oscillatory behavior is observed for a wide range of process parameters and onset of oscillations is observed during the transition from operation without material recycling to operation with partial recirculation of the polymer solution. Besides, at certain constrained range of operation conditions, complex dynamics can be observed, including the onset of chaotic behavior. It is also shown that the thermal parameters of the reactor and recycling pump exert a profound effect upon the process stability. For this reason it is shown that oscillatory behavior is very unlikely to occur in actual industrial reactors. 相似文献