基于未确知测度的企业员工绩效评价     

刘蕾  张月峰  李静静 《科技与管理》2007,9(1):60-63

员工绩效评价是企业管理者与员工之间沟通的一项重要活动，对人力资源管理具有重要的实际作用。针对目前我国大多数企业建立的员工绩效评价制度都不能全面反映员工绩效的真实水平问题，在建立了基于未确知测度的企业员工绩效评价模型的基础上，将定性与定量指标结合起来评价员工绩效，最后以评价销售人员绩效为例进行了分析说明。  相似文献   

有机不对称合成反应的热力学研究   总被引：1，自引：0，他引：1  

胡文祥 《科技通报》1994,10(5):281-283

本文首次建立了不对称合成反应中热力学函数之间的相互关系，阐明了不对称合成手性产率随构型熵和温度变化的规律，在不对称合成中具有重要的理论和实际意义．  相似文献   

教师网络空间教育质量的综合评价     

王积建  李霞 《浙江工贸职业技术学院学报》2016,(3):22-27

根据“以学生为本、以质量为中心、以信息化为宗旨”的理念,从界面设计、资源建设、资源热度和实践效果4个方面筛选出14个影响因素,构建了教师网络空间教育质量的综合评价指标体系。以网络空间的教师空间为例进行了综合评价,结果表明,该指标体系及评价模型具有一定的可行性。  相似文献   

二维保面积映象的拓扑熵     

刘伍明 《蒙自师范高等专科学校学报》1989,(1)

本文计算了二维保面积映象在经过倍周期分岔、同周期分岔到混沌时的拓扑熵,并得到这些映象通向混沌的各种道路和与其对应的拓扑熵之间的关系。  相似文献   

约束非线性l1问题的极大熵方法     

崔焕钰 《南京晓庄学院学报》2002,18(4):52-55

本文给出求解约束非线性l1问题的极大熵方法并证明了其收敛性。给出了极大熵与增广La grange乘子法相结合的算法 ,最后给出一个算例。  相似文献   

非光滑半无限规划调节熵函数法     

陈宇 《怀化学院学报》2005,24(2):38-41

对一类非光滑半无限规划,利用调节熵函数性质,得到两种算法,并分别讨论了它们的收敛性·  相似文献   

Study on the Crystallization Mechanism of Spectinomycin Dihydrochloride     

鲍颖  王静康  王永莉  戚振  王宏斌 《天津大学学报(英文版)》2003,9(3)

Dilutionisonekindofcrystallizationsthatiswidelyusedintheproductionofpharmaceuticals ,especiallyantibi otics.Dilutionhasmanyadvantagessuchashigherthrough putsbypreparingveryconcentratedinitialsolutions,loweroperatingtemperatureforheat labilesubstancesandbetterpu rificationasthemotherliquorretainsundesiredimpurities[1] .Oneofthecharacteristicsofdilutionisthatthesolventcom positionvarysastheprocessproceeds.Thesolventcomposi tionhasinfluenceonnotonlythenucleationratebutalsotherelativegrowthrateofe…  相似文献   

Impact of information entropy on teaching effectiveness     

WANG Zhi-guo 《美中教育评论》2007,4(3):77-80

Information entropy refers to the process in which information is sent out from the information source, transmitted through information channel and acquired by information sink, while the teaching process is the one of transmitting teaching information from teachers and teaching material to students. How to improve teaching effectiveness is virtually how to increase the transmission of effective information in teaching.  相似文献   

A New Perspective on the Effects of Covariates in Mixture Models     

Gabriela Stegmann  Kevin J. Grimm 《Structural equation modeling》2018,25(2):167-178

In this simulation study, we explored the effect of introducing covariates to a growth mixture model when covariates were also generated by a mixture model. We varied the association between the latent classes underlying the growth trajectories and the covariates, the degree of separation between the latent classes underlying the covariates, the number of covariates included, and amount of missing data in the growth data. We found that adding covariates to the growth mixture model generally hurt class recovery except where the latent classes underlying the growth trajectories and the covariates were the same or very strongly associated, and there was a large degree of separation between the classes underlying the covariates. We found that when covariates were introduced, entropy might no longer be an accurate indicator of the distinctiveness of the growth trajectory classes.  相似文献   

Modeling Self-Regulation as a Process Usinga Multiple Time-Scale Multiphase Latent Basis Growth Model     

Jonathan Lee Helm  Nilam Ram  Pamela M. Cole  Sy-Miin Chow 《Structural equation modeling》2016,23(5):635-648

Measurement burst designs, wherein individuals are measured intensively during multiple periods (i.e., bursts), have created new opportunities for studying change at multiple time scales. This article develops a model that might be useful in situations where the functional form of short-term change is unknown, might consist of multiple phases, and might change over the long term. Specifically, we combine measurement of intraindividual entropy, a latent basis growth model, a multiphase growth model, and a growth model with covariates into a unified framework that could help accommodate the complexity of patterns that emerge in multiple time-scale categorical data streams. Empirical data from a longitudinal study of young children’s behavior during laboratory tasks designed to induce frustration are used to illustrate the utility of the proposed model for simultaneously describing intratask (short-term) change in self-regulation and developmental (long-term) shifts in intratask change.  相似文献