高校实验仪器管理中TPM模式的应用

本文介绍了TPM模式,分析了高校实验仪器管理现状,并阐述了TPM模式在高校实验仪器管理中的应用与实践.     

1832年清与浩罕议和再探析

浩罕与清朝的交往,是18—19世纪中亚国际关系的主要方面。随着浩罕国力的上升,它对清朝国家利益,尤其是对于新疆地区权益的野心也日益增长,两国不可避免地发生摩擦和纠纷。以道光年间的张格尔之乱为标志,浩罕采取了直接出兵的方式同清朝对抗,致使两国关系发生重大转折。清朝平乱后不久,与浩罕议和,双方关系重新进入一个相对平和的时期。但是这次议和后的中亚尤其是新疆局势,却与张格尔乱前不尽相同,清朝在新疆丧失了诸多权益,而浩罕则攫取了经济、政治等诸方面的大量利益,这对此后的中亚局势的发展有着重要影响。本文试图在前人研究的基础上,通过对双方关系的一个重要转折点——道光十二年议和的探讨,揭示议和本身的一些重要细节,以及双方关系的走向和形成此种走向的原因。     

加强自主创新形势下的高校仪器设备采购工作

在新形势下对如何提高高校仪器设备的采购质量进行探讨,阐述在工作实践中的体会。     

祭神之舞法 场域之法器——荆山《扛神》的舞蹈与道具特征之探

《扛神》起源于先秦时期荆楚腹地的驱鬼逐疫仪式,是一种原始宗教的巫文化现象。它是一种融歌、舞、乐为一体,以多种道具为法器、带有宗教色彩巫术表演的民俗祭神仪式。在仪式场域的结构中,舞蹈是祭神最为活跃的因子,道具则视为通神最灵验的“法器”。文章从实地调查所采集的历史文献与口述资料入手,对《扛神》的舞法与法器中所隐蔽着的令人莫解的文化符号、形态特征作一初步梳理与描述,其意义在于为本领域的研究提供可参性的资料,并从中捕捉一些历史久远的信息。     

Automatic recognition method for optical measuring instruments based on machine vision

Based on a comprehensive study of various algorithms, the automatic recognition of traditional ocular optical measuring instruments is realized. Taking a universal tools microscope (UTM) lens view image as an example, a 2-layer automatic recognition model for data reading is established after adopting a series of pre-processing algorithms. This model is an optimal combination of the correlation-based template matching method and a concurrent back propagation (BP) neural network. Multiple complementary feature extraction is used in generating the eigenvectors of the concurrent network. In order to improve fault-tolerance capacity, rotation invariant features based on Zernike moments are extracted from digit characters and a 4-dimensional group of the outline features is also obtained. Moreover, the operating time and reading accuracy can be adjusted dynamically by setting the threshold value. The experimental result indicates that the newly developed algorithm has optimal recognition precision and working speed. The average reading ratio can achieve 97.23%. The recognition method can automatically obtain the results of optical measuring instruments rapidly and stably without modifying their original structure, which meets the application requirements.     

实现化工自动化必须因地制宜选择测量仪表

根据现场实际条件，结合实例，阐述了实现化工自动化选择测量仪表的重要性。     

文科院系的仪器设备动态管理

从文科院系仪器设备的购置特点,以及管理现状出发,分析了仪器设备在现行管理情况下所存在的问题,提出了解决的方案,并对方案的实施做了进一步的介绍。     

Can Item Response Times Provide Insight Into Students’ Motivation and Self‐Efficacy in Math? An Initial Application of Test Metadata to Understand Students’ Social–Emotional Needs

As computer‐based tests become more common, there is a growing wealth of metadata related to examinees’ response processes, which include solution strategies, concentration, and operating speed. One common type of metadata is item response time. While response times have been used extensively to improve estimates of achievement, little work considers whether these metadata may provide useful information on social–emotional constructs. This study uses an analytic example to explore whether metadata might help illuminate such constructs. Specifically, analyses examine whether the amount of time students spend on test items (after accounting for item difficulty and estimates of true achievement), and difficult items in particular, tell us anything about the student's academic motivation and self‐efficacy. While results do not indicate a strong relationship between mean item durations and these constructs in general, the amount of time students spend on very difficult items is highly correlated with motivation and self‐efficacy. The implications of these findings for using response process metadata to gain information on social–emotional constructs are discussed.     

天车称重系统解析

以河北钢铁集团唐山钢铁有限责任公司一钢轧厂240t天车称重系统为例,介绍天车称重系统的硬件结构、工作原理、传输方式、仪表功能、称重传感器原理、钢丝绳补偿、信号传输、称重仪表等,结合在生产中的实际运行状况,总结出在生产维护中的常见问题,并提出具体的解决方法。     

贵重仪器共享中管用分离的实践

本文讨论了贵重仪器共享管理中的“管理者”与“使用者”的相互关系,在分析中山医学院科研仪器管理中心实施贵重仪器管理者与使用者角色分离实践的基础上,从环境、制度、组织、资金等方面提出了两者角色分离的相应条件。