我国企业管理创新方法智能评价系统构建

旨在分析我国企业复杂情景中管理创新方法的选择倾向性问题。使用多案例研究方法,通过扎根理论依次进行开放式、轴向、选择性译码和案例间对比分析,确定了我国企业管理创新方法的影响因素、范畴,得出了行业环境、团队创新精神、组织创新文化、企业战略选择的不同维度集成作用下企业对突变式或渐进式管理创新方法选择的机理和概念模型;以案例研究结论为依托,使用人工神经网络的方法分别对突变式和渐进式管理创新方法构建智能评估预测系统,为企业进行管理创新方法类型选择的决策或验证提供理论依据。     

一种新的概念格增量维护算法

形式概念分析在数据分析以及机器学习领域得到了广泛的应用,作为核心数据结构的概念格的构造算法一直是形式概念分析领域的研究热点.根据概念外延的补集性质,给出并证明了概念的生成定理和超概念的生成定理,并以此为基础提出了一种新的概念格的增量维护算法,包括概念的生成和序关系建立算法,并给出了一个应用示例.     

增量式Huber-支持向量回归机算法研究

传统的面向支持向量回归的一次性建模算法中样本增加时,均需从头开始学习,而增量式算法可以充分利用上一阶段的学习成果。SVR的增量算法通常基于ε-不敏感损失函数,该损失函数对大的异常值比较敏感,而Huber损失函数对异常值敏感度低。所以在有噪声的情况下,Huber损失函数是比ε-不敏感损失函数更好的选择,在现实情况当中。基于此,本文提出了一种基于Huber损失函数的增量式Huber-SVR算法,该算法能够持续地将新样本信息集成到已经构建好的模型中,而不是重新建模。与增量式ε-SVR算法和增量式RBF算法相比,在对真实数据进行预测建模时,增量式Huber-SVR算法具有更高的预测精度。     

弹塑性结构在外载和温度作用下的安定分析

本文在考虑外载和温度的缓慢变化下，提出了一个新的运动安定定理。同时，在此基础上，又导出了既简单又适用的增量破坏准则．文末也以实例说明了它的应用。     

Period-doubling bifurcation in two-stage power factor correction converters using the method of incremental harmonic balance and Floquet theory

In this paper, period-doubling bifurcation in a two-stage power factor correction converter is analyzed by using the method of incremental harmonic balance (IHB) and Floquet theory. A two-stage power factor correction converter typically employs a cascade configuration of a pre-regulator boost power factor correction converter with average current mode control to achieve a near unity power factor and a tightly regulated post-regulator DC-DC Buck converter with voltage feedback control to regulate the output voltage. Based on the assumption that the tightly regulated post-regulator DC-DC Buck converter is represented as a constant power sink and some other assumptions, the simplified model of the two-stage power factor correction converter is derived and its approximate periodic solution is calculated by the method of IHB. And then, the stability of the system is investigated by using Floquet theory and the stable boundaries are presented on the selected parameter spaces. Finally, some experimental results are given to confirm the effectiveness of the theoretical analysis.     

基于KFCM增量更新的无线电引信目标识别方法

针对传统无线电引信在复杂电磁环境下作用效果较差的问题,以连续波多普勒引信为例,通过对引信检波输出信号频域的分析,提出一种基于熵的特征提取方法,并利用KFCM算法对信号进行分类识别。由于实际战场环境复杂且不可预测,其背景噪声强度与实验环境下存在差异,因此结合KFCM增量更新特性,使分类模型根据噪声强度变化而实时更新调整,从而达到更好的分类效果。实验结果证明,基于增量更新KFCM算法能显著提高不同信噪比下引信目标识别能力,将KFCM增量更新算法运用到无线电引信抗干扰能取得良好效果。     

超形变原子核全同带的判断与角动量增量顺排量子化

给出了一个新的从能量角度判断超形变带全同带的方法,并运用这种方法分析了100多条超形变带.给出了全同带数目随判断参数的变化关系.还引进了量子化区间的概念,从统计角度分析角动量增量顺排的量子化问题,得出了全同带增量顺排随判据加严而趋向于量子化的性质,而正常形变全同带则不具有这一性质.讨论了新方法与粒子转子模型之间的关系.     

基于PLC-200的大功率直流电动机调速系统的设计

以大功率直流电动机调速系统为研究对象,采用西门子PLC-200作为主要控制器件,西门子6RA70作为执行单元,罗升触摸屏作为上位机,同时采用增量式PID控制算法实现大功率直流电动机自动直流调速系统的设计.     

火电厂机组最优组合的一种实用算法

本文在文[1] 、[2] 的基础上,根据等微增率准则,对不考虑启动耗量的火电厂机组投入、切除的经济性问题进行了研究。通过引入切换微增率,切换负荷的概念,提出了一种确定火电厂经济运行最优机组组合的实用算法。根据计算结果,调度人员可以了解在什么负荷范围内应选用哪种机组组合方式才是经济的。     

Behavior of argon gas release from manganese oxide minerals as revealed by <Superscript>40</Superscript>Ar/<Superscript>39</Superscript>Ar laser incremental heating analysis

Manganese oxides in association with paleo- weathering may provide significant insights into the multiple factors affecting the formation and evolution of weathering profiles, such as temperature, precipitation, and biodiversity. Laser probe step-heating analysis of supergene hollandite and cryptomelane samples collected from central Queensland, Australia, yield well-defined plateaus andconsistent isochron ages, confirming the feasibility dating very-fined supergene manganese oxides by 40Ar/39Ar technique. Two distinct structural sites hostingAr isotopes can be identified in light of their degassing behaviors obtained byincremental heating analyses. The first site, releasing its gas fraction at thelaser power 0.2-0.4 W, yields primarily 40Aratm, 38Aratm, and 36Aratm (atmospheric Ar isotopes). The second sites yield predominantly 40Ar* (radiogenic 40Ar),39ArK, and 38ArK (nucleogenic components), at ～0.5-1.0 W. There is no significant Ar gas released at the laser power higher than 1.0 W, indicating the breakdown of the tunnel sites hosting the radiogenic and nucleogenic components. The excellent match between the degassing behaviors of 40Ar*, 39ArK, and 38ArK suggests that these isotopes occupy the same crystallographic sites and that 39ArK lossfrom the tunnel site by recoil during neutron irradiation and/or bake-out procedure preceding isotopic analysis does not occur. Present investigation supports that neither the overwhelming atmospheric 40Ar nor the very-fined nature of the supergene manganese oxides poses problems in extracting meaningful weathering geochronological information by analyzing supergene manganese oxides minerals.