智能阀门定位器在己内酰胺装置中的应用     

张娟  李炳旗  李仲秋 《兰州石化职业技术学院学报》2013,(2):7-9

介绍了智能阀门定位器及常规电气阀门定位器的工作原理。从使用、维护和经济三个方面对比分析了智能定位器和传统定位器的优缺点,发现智能阀门定位器具有性能稳定、调校方便、维修简单、成本低廉等优点。阐述了当前化工企业中广泛使用智能阀门定位器面临的挑战。  相似文献   

在线电子作业及实验信息管理系统的分析与开发     

贾伟峰  黄永灿  张志彦 《安阳师范学院学报》2013,(5):125-128

文章分析了在线电子作业及实验信息管理系统的应用需求,基于需求设计了系统总体架构,并对具体功能模块进行了说明;系统开发平台全部采用开源软件,降低了部署系统的软件成本;系统的初步运行表明,作业布置和收集的效率大为提高,教学流程得到了规范化管理.  相似文献   

研制开发新型摩托车发动机的可行性分析     

樊小年 《大众科技》2004,(9):71-73

从理论分析了摩托车发动机研制与开发可行性,提出了新型发动机主要结构上的设计要点,简单介绍了发动机研制开发的成功经验,高新技术的综合应用,是提高摩托车质量性能的有效途径.  相似文献   

Committee standards battles in the era of convergence: Implications for smart systems     

《International Journal of Information Management》2021

By now, there have been many standards battles fought within the same industry or by multiple industries in the market-based standardization. In these battles, incompatible standards compete to win market dominance. While there is some research on standards battles found within a single committee, competitions in the committee-based standardization between standards from different committees or SDOs are underexplored. This paper categorizes the types of standards battles by the mode of standardization and the heterogeneity of actors. A new type referred to as ‘committee standards battles for converging systems’ is introduced and the dynamics of such battles is explored with two cases. The battle between the electric vehicle charging and the smart meter communication standard and the battle between two different vehicle-to-everything (V2X) communication standards are analyzed. The failure in achieving compatibility between different committee standards on the same frequency bands results in communication interference that adversely affects the operation of smart systems. Social incompatibilities between actors and alliances from a mix of industries with vested interests towards a particular standard complicate the battling scene. The findings provide implications in terms of heterogeneity, actors, and government role in standards battles.  相似文献   

Association between psychosocial stressors with emotional and behavioral problems among children of low-income addicted families living in Brazil     

《Child abuse & neglect》2019

BackgroundChildren exposed to substance use in their families are vulnerable to multiple risk factors in their development and at increased risk for emotional and behavioral problems. The aims of the study were as follows 1) estimate the prevalence of emotional and behavioral problems among children aged 6–11 years old, living with addicted family members in a low-income urban community of São Paulo, Southeastern Brazil; 2) evaluate the children’s exposure to family psychosocial stressors and substance use; and 3) investigate the factors related to the increased risk of emotional and behavioral problems and substance use.MethodsA cross-sectional study was conducted among 101 children aged 6–11 years old (M = 9.16 years, SD = 1.61). The instruments used were a sociodemographic questionnaire, the Child Behavior Checklist (CBCL) and the Psychosocial Stress Factors (PSF).ResultsHigh prevalence of problems was found for this sample: the CBCL showed 26.7% of clinical scores for Internalizing Problems, 40.6% for Externalizing Problems, and 40.6% for Total Problems. Exposure to family psychosocial stressors was also high, including severe disease (33%), physical aggression (28.9%), death (27.8%), psychiatric hospitalization (16.7%), suicide attempts (15.5%), and suicide (9.3%). Exposure to these family stressors was associated with an increase of two to four times in the prevalence of internalizing and externalizing problems.ConclusionsChildren exposed to substance abusers have more mental health problems than general population, even when compared to peers living in similar low-income areas. This is a group that should be target of a selective preventive intervention.  相似文献   

浅析电子文件与电子档案   总被引：6，自引：0，他引：6  

韩捷 《黄河科技大学学报》2003,5(1):147-149

电子文件的诞生,标志着档案工作开始进入新的时期。我们应该对这一新领域进行全面系统研究,借鉴国内外新的观念和经验,尽快适应技术变革和新的发展形势。  相似文献   

制约机制在教育管理中的应用     

王春凤 《黑龙江教育学院学报》2007,26(6):32-33

制约机制是教育管理机制的重要组成部分,促进社会组织中的各个组成部分或各管理环节相互作用、合理制约,从而使系统中有形要素或无形要素按照其内在规律在运动中相互联系、相互结合形成特定功能,促进教育管理的健康发展。  相似文献   

我校电气技术专业课程体系的研究     

陈守雄 《洛阳工业高等专科学校学报》2003,13(3):85-86

结合我校办学方针，将电气技术专业特点定位在“以强电为主，强电和弱电相合”．课程设置形成了一主二从（一主一电工类为主，二从一电子、计算机为辅）的课程体系．  相似文献   

从教育视角谈电子游戏分级标准的制定     

汤跃明  张玲 《现代教育技术》2008,18(3):23-26

文章在介绍国内外游戏分级制度的基础上,分析了游戏分级的必要性,并从教育视角提出了游戏分级标准中存在的问题。针对这些问题作者提出了相应的改进策略:游戏评定标准多样化;注重教育工作者的参与;关注文化传播的影响;重视教育游戏的推广。  相似文献   

面模型与球壳模型下的电场强度     

孟波 《安顺师范高等专科学校学报》2008,10(5):95-96

通过采用面模型与球壳模型对均匀带电球面处的电场强度的计算与分析,揭示了其场强分布与所采用的物理模型的依赖关系,指出两种模型下谈及球面处的场强均有实际意义。  相似文献