从人—机—环境系统理论角度评价高校外语教学系统

本文以现代高等教育和外语教育的理论为依据,从人—机—环境系统工程的角度分析外语教学系统,全方位探讨人—机—环境系统下外语教学的影响因素、体系评价等问题。以高校英语教学效果为研究对象,在问卷调查的基础上,通过结构方程建模和高阶因子分析,对影响外语教学效果的因素进行测量和分析,得出外语教学效果的相关结论,旨在为外语教学改革提供客观依据。

人—机—环境系统在武器装备研制中的应用探讨

人—机—环境系统是把人、机、环境作为武器系统中的要素。从总体角度对武器装备进行全面规划和控制。人—机—环境系统在武器装备研制中的应用,将改变以往武器装备分散、孤立的研究局面,它把武器装备研制推向一个新阶段。综述武器装备研制的不同阶段,应用人—机—环境系统的基本思路。

基于直升机人—机—环境系统可靠性设计准则的应用研究

该文基于以往的直升机型号可靠性设计的经验教训,提出了直升机人—机—环境系统设计准则的编写程序,并对其应用进行了研究。其目的是试图通过引入直升机型号可靠性设计中“人的因素”和“环境因素”,并以此为基础分析其对直升机可靠性的影响,以期拓展直升机可靠性设计准则的范围和内容,将直升机人—机—环境系统可靠性要求转化为可靠性设计措施。

从人—机—环境系统理论角度评价高校外语教学系统

本文以现代高等教育和外语教育的理论为依据,从人—机—环境系统工程的角度分析外语教学系统,全方位探讨人—机—环境系统下外语教学的影响因素、体系评价等问题。以高校英语教学效果为研究对象,在问卷调查的基础上,通过结构方程建模和高阶因子分析,对影响外语教学效果的因素进行测量和分析,得出外语教学效果的相关结论,旨在为外语教学改革提供客观依据。

装甲车辆人—机—环境系统综合实验研究

本文阐述了现有工效学的普遍规律与装甲车辆人—机—环境系统具体特点相结合的重要性.进行了人—机系统综合实验系统的可行性分析,并提出该实验系统的具体实施方案.

基于贝叶斯可信度的直升机安全性分析

本文基于贝叶斯网络理论建立了直升机在"人—机—环境系统"的飞行安全性模型,其目的是通过网络模型分析,发现影响安全性的薄弱环节,以及通过相应的纠正措施提高直升机飞行的安全性。

论安全工程基本原理

本文提出了人—机—环境系统本质安全化的新概念,论述了人—机—环境系统本质安全化作为安全工程基本原理的结论,并对安全工程中的几个基本概念用新的观点进行了分析。

路桥建设行业人的不安全行为分析及预防对策研究

文章从人的心理因素、作业环境和机械设备的影响等方面对不安全行为产生的因素进行分析,最后从人的心理角度、人—机—环境系统的匹配角度、日常制度的完善角度研究预防和控制人的不安全行为的措施和相应的策略。

模糊综合评判在装备操纵手遴选中的运用

装备操纵手的选拔是部队一项经常性的重要工作,它对于更好地发挥武器装备技术性能,提高部队战斗力有着极其重要的作用。但是,目前的操纵手选拔工作定性较多、主观随意性大,缺乏科学的理论指导。依据人机环境系统工程理论,采用模糊综合评判决策法对装备操纵手选拔工作需把握的诸因素和选拔评判过程进行建模与量化分析,得到了与实际结果相一致的结论。它的应用对于正确科学地选拔装备操纵手有重要意义。

石油工业事故与时间的相关性研究

为了能更好的把握石油工业中安全生产随机事故发生的时间规律,以某石油公司为例,统计了其2004年至2011年的安全生产事故数据,从安全生产事故发生的年份、月份、日期以及员工的工时和安全培训时间等三个方面入手,研究分析了安全生产事故的时间规律。可以看出安全生产事故的高发时段和低发时段错落有致,在日常执行安全管理措施时,应加强加大高发时段的安全管理,同时该石油公司的安全培训时间和工时之间较为和谐,安全培训虽占用了工时,但保证了生产任务的有效完成。

Evaluation methods of man-machine-environment system for clean and safe production in phosphorus mines: A case study

Phosphorus is an essential element in agricultural production and chemical industry. However, since the risk of casualties and economic loss by mining accidents, the application of clean and safe production in phosphorus mines encounters great challenges. For this purpose, a man-machine-environment system composed of evaluation indexes was established, and the grading standards of indexes were defined. Firstly, the measurements of 39 qualitative indexes were obtained through the survey data. According to the measured values of 31 quantitative indexes, the measurements of quantitative indexes were calculated by linear measurement function(LM) and other three functions. Then the singleindex measurement evaluation matrixes were established. Secondly, the entropy weight method was used to determine the weights of each index directly. The analytic hierarchy process(AHP) was also applied to calculate the weights of index and index factor hierarchies after the established hierarchical model. The weights of system hierarchies were given by the grid-based fuzzy Borda method(GFB). The comprehensive weights were determined by the combination method of AHP and GFB(CAG). Furthermore, the multi-index comprehensive measurement evaluation vectors were obtained.Thirdly, the vectors were evaluated by the credible degree recognition(CDR) and the maximum membership(TMM)criteria. Based on the above functions, methods, and criteria, 16 combination evaluation methods were recommended.Finally, the clean and safe production grade of Kaiyang phosphate mine in China was evaluated. The results show that the LM-CAG-CDR is the most reasonable method, which can not only determine the clean and safe production grade of phosphorus mines, but also improve the development level of clean and safe mining of phosphorus mines for guidance.In addition, some beneficial suggestions and measures were also proposed to advance the clean and safe production grade of Kaiyang phosphorus mine.

Assessment criteria for nonverbal interaction contents in r-learning

r-learning,which is based on e-learning and u-learning,is defined as a learning support system that intelligent robots serve verbal and nonverbal interactions on ubiquitous computing environment.In order to guarantee the advantages of r-learning contents with no limits of timc and place and with nonverbal interaction which are not in e-learning contents,in recent years,assessment criteria for r-learning contents are urgently rcquired.Therefore,the reliable and valid assessment criteria were developed for nonverbal interaction contents in r-learning,and its detailed research content is as follows.First,assessment criteria for nonverbal interaction in r-learning contents will be specified into gesture,facial expression,semi-verbal message,distance,physical contact and time.Second,the validity of the developed assessment criteria will be proved by statistics.Consequently,the assessment criteria for nonverbal interaction contents will be helpful when choosing the better r-learning content and producing the better r-learning content,and the reliability of school education is improved ultimately.

Development of an Accurate Low-cost Ultrasonic Localization System for Autonomous Mobile Robots in Indoor Environments

An accurate low-cost ultrasonic localization system is de- veloped for automated mobile robots in indoor environments, which is essential for automatic navigation of mobile robots with various tasks. Although ultrasenic sensors are more cost-effective than other sensors such as Laser Range Finder （LRF） and vision, but they are inaccurate and directionally ambiguons. First, the matched filter is used to measure the distance accurately. For resolving the computational complexity of the matched filter, a new matched filter algorithm with simple compution is proposed. Then, an ultrasonic localization system is proposed which consists of three ultrasonic receivers and two or mote transmitters for improving position and orientation accuracy was developed. Finally, an extended Kalman filter is designed to estimate both the static and dynamic positions and orientations. Various simu lations and experimental results show that the proposed system is effective.