共查询到20条相似文献，搜索用时 15 毫秒
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系统地介绍了智能虚拟防盗网系统的基本原理、组成框图，对电话网络的接入方法和热释电红外传感器、语音电路等进行了阐述，并给出了部分基本电路和软件流程． 相似文献
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在汽车行业的质量控制体系中,企业通常都会把控制图作为重要的过程控制手段.一般说来,企业都严格遵循SPC技术运用固定化和模式化的标准控制图来进行质量管理和过程控制.然而,大连液压件厂通过实践,使计量型数据控制图技术在汽车转向泵的生产中得到应用,并独创了阀孔控制图和试验台用油清洗度控制图,增强了控制图的适用性,效果比较理想,有很好的实用价值. 相似文献
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Ardith Baker Ph.D. 《Teaching Statistics》2014,36(1):2-6
Chocolate chip cookies are used to illustrate the importance and effectiveness of control charts in Statistical Process Control. By counting the number of chocolate chips, creating the spreadsheet, calculating the control limits and graphing the control charts, the student becomes actively engaged in the learning process. In addition, examining and interpreting the control charts within the context of the cooking making process encourage the student to think critically in order to solve problems. 相似文献
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An Assessment of Statistical Process Control-Based Approaches for Charting Student Evaluation Scores
Xin Ding Don Wardell Rohit Verma 《Decision Sciences Journal of Innovative Education》2006,4(2):259-272
We compare three control charts for monitoring data from student evaluations of teaching (SET) with the goal of improving student satisfaction with teaching performance. The two charts that we propose are a modified p chart and a z‐score chart. We show that these charts overcome some of the shortcomings of the more traditional charts for analyzing SET data. A comparison of three charts (an individuals chart, the modified p chart, and the z‐score chart) reveals that the modified p chart is the best approach for analyzing SET data because it utilizes distributions that are appropriate for categorical data, and its interpretation is more straightforward. We conclude that administrators and faculty alike can benefit by using the modified p chart to monitor and improve teaching performance as measured by student evaluations. 相似文献
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Jakob Evertsson 《Paedagogica Historica: International Journal of the History of Education》2014,50(5):668-684
This article considers the emergence of classroom wall charts as a teaching technology in Swedish elementary schools in the late nineteenth and early twentieth centuries, using Biblical history teaching as an example. There has been some work done internationally on wall charts as an instructional technology, but few studies have looked at their use in Sweden. With a theoretical approach informed by Martin Lawn’s understanding of teaching technologies, this article shows that wall charts became both an important teaching object and a means of introducing new pedagogical ideas. A study of the official school inspectors’ reports shows that wall charts had spread to most local schools by the end of the nineteenth century, while an analysis of Biblical history textbooks and teaching guidelines shows that visual aids were increasingly integrated into the school curriculum. The wall charts themselves were initially imported, mainly from Germany, but by the end of the nineteenth century they were being produced in Sweden for the domestic market, in keeping with the National Romantic ideals of the day as well as with the new awareness of the importance of adapting images to use in classroom teaching. 相似文献
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王征强 《邢台职业技术学院学报》2007,24(1):39-41
用来开发可视化图表的开发包比较多，本文主要介绍如何利用计算机语言Java和目前功能相当强大的JfreeChart开发包来绘制各种各样图表，为数据分析处理的可视化提供一种可行的办法。 相似文献
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研究了储油罐的变位识别与罐容表标定的问题.针对问题一,利用求体积的定积分法,求出了罐体在无变位与纵向变位两种情况下分别关于油位高度及纵向倾斜角的体积表达式,得出了无变位和纵向倾斜角为α=4.1°两种情况下的罐容表标定值.针对问题二,利用非线性最小二乘法得到两个偏转角,并制定出罐体变位后油位高度的罐容表标定值. 相似文献
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眭碧霞 《南宁职业技术学院学报》2005,10(4):95-97
使用JFreeChart可以极大地增强Java应用程序的高级制图功能,生成多种通用的图表。对于要在Swing或Web应用程序中加入自制图表的Java开发者来说,JFreeChart无疑是一种比较理想的选择。 相似文献
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根据有向图的概念和基本定理,将计算机处理过程中的程序流程图抽象为有向图,用于判别流程图的逻辑性及是否存在死锁现象,并用实例进行了判别及仿真验证． 相似文献
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At the turn of the 18th to the 19tb Century, pictures from books and leaflets developed into didactic wall charts. Between 1860 and 1960 the wall charts became the decisive medium of teaching. Three factors favoured this process: didactic theory formation, the invention of lithography, and compulsory schooling, which was gradually generalised during that period. Chance and the spirit of the time also had a role to play in the publication and presentation of wall charts, as well as the evolution in teaching methods. The selection of the pictures we will use, was governed by the principles of information, conceptualisation and aesthetic education. Reality itself served as a model for the illustrators, which can be demonstrated by pictures from history and geography lessons. Nevertheless, the didactic efforts to present as much information as possible on the one hand and to instruct the children with precise and highly desired conceptualisations of the reality on the other hand, led to an overloading of the context as well as to an unrealistic simplification of the complexities presented in the wall charts. 相似文献
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Graphs, charts and maps are often used to present quantitative information. Students learn about these in geography, mathematics and other subjects across the curriculum. From contact with school teachers it has been found that many students have problems with graphic representations. This is often seen as a problem of teaching method rather than a problem concerning students' understanding. Studies in Sweden (Ottosson & Aberg-Bengtsson, 1995) and Australia (Gerber et al., 1995) confirm that it is not teaching methods alone that matter. The studies also indicate that the meanings assigned by beholders of graphs, charts and maps are closely linked to their life experiences. This is similarly so for Singapore students. Over thirty students ranging from 11 to 20 years of age were interviewed on their interpretation of a set of graphs, charts and maps of an imaginary world. A phenomenographic analysis shows that the students experienced considerable variations in their perceptions of graphic representations of quantitative data (graphs, charts and maps). These variations are represented in an outcome space diagram showing three major levels of understanding. 相似文献
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Incidence and impact of sexual abuse in a child outpatient sample: The role of direct inquiry 总被引：1，自引：1，他引：1
From the child psychiatry outpatient department of a university medical center, 64 charts were reviewed in two phases: 29 were randomly selected from outpatient files, and 35 were examined after clinicians were asked to directly query sexual abuse. Although the reported sexual abuse rate for randomly selected charts was quite low (6.9%), reference to sexual abuse history in charts of children who were asked about molestation was 4.5 times more frequent (31.4%; 11.5% of all boys, 50% of all girls). Children with an identified sexual abuse history reported more psychological symptoms, had made more suicide attempts in the past, and were more likely than nonabused children to receive a diagnosis of major depression. 相似文献
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本研究选择幼儿园中班、大班和小学一年级儿童各60名作为被试,通过四种图表任务的测试考察儿童图表理解能力的发展状况。研究结果表明:5～7岁儿童对表格、饼状图、点状图和柱状图的理解能力均随年龄的增长而逐步提高,从中班到大班这一阶段是儿童图表理解能力发展的关键期。 相似文献
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坐标最佳的正方形核素图 总被引：3，自引：0，他引：3
王昱应 《商丘师范学院学报》2001,17(4):34-36
分析了各种核素图中的偶Z＝60－82上界边界线的特征,说明了在变量Z－N图,Z－H图,S－H图,K－H图与（S－K）－H图中,此偶Z边界线依序由左下向左上递变,平竖折线与从右下的向左上的边界线,发现正方形图处于中间位置,显示出此图中核素分布规律最优,对于整个核素区在各种核素图中的范围也是如此。 相似文献
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采用微元积分的思想,确定了球缺顶储油罐内油量与油位高度及横纵向倾斜角的函数关系模型,利用MATLAB软件编程对罐容表在不同变位角度下进行了标定,得出了在一定范围内任一组变位角度下储油罐的罐容表. 相似文献
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詹瑾 《广东技术师范学院学报》2007,(7):6-8
目前常用的软件过程模型有CMM、PSP、TSP和敏捷开发过程等,对这些过程模型的使用,需采用统计过程控制方法的控制图等工具对过程数据采样点进行分析,以便了解过程性能和过程能力,采取措施消除过程异常,保证过程的稳定性,从而提高软件开发质量.本文简要介绍了CMM、PSP等过程模型以及基于离散数据的控制图分析过程稳定性的方法. 相似文献
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Terhi M?ntyl? 《Research in Science Education》2012,42(4):791-812
In physics teacher education, two central goals are first to learn the structures of physics knowledge, and second the processes of its construction. To know the structure is to know the framework of concepts and laws; to know the processes is to know where the knowledge comes from, how the framework is constructed, and how it can be justified. This article introduces a way to approach these goals in the form of a graphical tool called the didactical reconstruction of processes (DRP), where knowledge is constructed to the extent that experiments and models have an equally important role in the construction process. In practice, the DRP is a graphical network representation or a ??flow chart?? with a specific structure, which aims to give an image of the processes of physical concept formation, while at the same time bearing in mind the educational goals. The DRP was tested in an instruction unit for pre-service physics teachers, where students drew flow charts for representing how the law of electromagnetic induction is formed. In addition to flow charts, students also wrote essays clarifying the content of the flow charts. The flow charts and essays were analysed through a qualitative categorisation of structural and knowledge claim patterns. The results show that the DRP helps students in arguing how to form the electromagnetic induction law and that the experiments and models have a distinct role in supporting students?? knowledge claims. 相似文献
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大学经济学理论较抽象,运用图表进行辅助教学可以有效提高教学效果。图表教学要依据图表类型来选择不同的教学路径,如用数据型图表展示经济变量关系及其变化趋势、用概貌图让学生了解学科的全貌等。一般图表教学要实施诸如形成教学意图、确立使用范围、设计图表、教案中展示图表、进行图表教学的五个基本的教学步骤。 相似文献