论数控技术与机制专业的教改关系

本文简要分析了我国机械制造业当今面临的主要问题.对数控技术在高校机制专业教学改革中所起的作用和必然性进行了探讨.论述了机械制造业的发展方向、建立先进制造系统以及机制专业培养人才必须与之适应的关系,数控技术作为先进制造系统的基础而应在教改中加强教育的模式、途径和方法.     

地形测量普及型直角坐标展点尺的设计与应用

设计了一种地形测量直角坐标展点尺,介绍了它的使用方法．该尺具有灵活方便、快速、准确等优点,便于普及应用．     

Do you see what I see? A social capital perspective on microtask gig worker opportunity recognition within electronic networks of practice

Microtask gig workers (MGWs) rely on digital platforms to arrange work agreements with requesters to complete well-defined microtasks. Many MGWs use an electronic network of practice (ENP) to facilitate information sharing about desirable and undesirable microtasks. This study uses social capital theory to theorize how social capital’s dimensions – structural, cognitive, and relational – shape the development of uncertainty-reducing and individualized-skill benefits. Based on survey data from 436 Amazon Mechanical Turk (MTurk) workers, the findings demonstrate that unique social capital dimensions affect specific ENP benefits. Understanding the communication style of an ENP (i.e., cognitive social capital) positively influences the uncertainty-reducing benefits of microtask information quality (MIQ) related to MTurk work. Combined with expectations of reciprocity and trust in ENP members (i.e., relational social capital), MIQ shapes microtask opportunity recognition (MOR), whereby individual MGWs identify opportunities to complete financially beneficial microtasks. The present study demonstrates that contextual factors, based on the coopetive nature of microtask ENPs, affect the interrelated structure of social capital theory and its underlying dimensions. Lastly, post hoc findings demonstrate the influence of MOR on MGWs’ financial performance, challenging previously held assumptions about the role of MIQ within the microtask literature.     

五年高职机电专业立体几何的教学策略

笔者根据调查分析得到的五年制高职机电专业立体几何教学的现状,结合机电专业的特点提出了一些租浅的教学策略.主要有：第一、注重情感,培养学生的非认知能力；第二、夯实基础,有助学生建立初步的认知能力；第三、遵循认知规律,帮助学生发展认知能力；第四、循序渐进,促进学生完善认知能力.     

浅谈速写在绘画中的重要作用

速写是一项训练造型综合能力的方法,是我们在素描中所提倡的整体意识的应用和发展。速写的这种综合性,主要受限于速写作画时间的短暂,这种短暂又受限于速写对象的活动特点。速写训练是基本功的训练,在某种意义是与素描同等重要的。它能提高人的情操和艺术修养,是画家发现创作题材,培养观察能力和概括能力,树立画风的重要手段。因此,速写在绘画中有着举足轻重的作用。     

CAX技术在机械创新设计中应用研究

CAX技术是CAD/CAE/CAM技术的简称,是随着计算机和数字化信息技术发展而形成的新技术,具有知识密集、学科交叉、综合性强等特点,CAX在计算机辅助进行机械创新设计中可以发挥较大作用。本文以设计逃生缓降器为例论述CAX技术在机械创新设计中的应用。实践表明:加强对CAX的学习可以大大提高机械创新的能力。     

Do drawing tasks improve monitoring and control during learning from text?

In two experiments it was investigated how drawing as a monitoring task affects self-regulated learning and cognitive load. To this end, participants (Exp. 1: N = 73, Exp. 2: N = 69) were randomly assigned to one of two conditions. In the experimental condition, students were asked to read an expository text on the formation of polar lights consisting of five paragraphs, whereby, after each paragraph, they had to create a drawing of the text's content. In the control condition, students read the same text, but performed no drawing task. In both conditions, students had to give judgments of learning (JoLs) after each paragraph and after reading the whole text as well as rate their cognitive load. Then, they were asked to select paragraphs for restudy. In Experiment 1, participants continued with an assessment of their learning outcomes immediately after their restudy selection, whereas in Experiment 2 they were first given the opportunity to actually restudy the selected paragraphs before working on the posttest. Results of both experiments indicate that JoLs rather than cognitive load predicted posttest performance. Moreover, students in the drawing condition compared with the control condition exhibited more accurate (relative) monitoring in Experiment 1 in that their JoLs were more strongly related to performance. Moreover, JoLs predicted students' restudy decisions in both experiments; however, this effect was by-and-large independent of whether they had to draw. Overall, results hint towards the potential of drawing to support metacognitive monitoring.     

基于工作过程的“化工机械设备技术”课程改革与实践

化工机械设备技术是一门理论与实践结合紧密,综合性和实践性很强的专业课程,按照基于工作过程的项目化教学方式组织实施教学,有利于实现教学目标。文章从课程体系、教学内容、教学手段、考核方法等方面对该课程的改革进行了探索,并提出了解决办法。     

Fabrics for the twenty-first century: As artist canvas and for the structural reinforcement of easel paintings on canvas

Abstract

The requirements for, and assessment of, suitable fabrics for artist canvas and for the structural reinforcement of easel paintings on canvas are presented. Crucially, the aesthetic and kinaesthetic, as well as physical properties of the canvas fabrics have been taken into account. To evaluate the fabrics the following properties were measured: stiffness, ultimate tensile strength, moisture response, crimp, drape, and lustre. Fabrics investigated include cotton, linen, polyester, polyamides, and carbonized fibres. Although polyester is yet to match linen or cotton kinaesthetically or aesthetically, overall it exhibits the best combination of properties. However, the results have shown that even when raw fibre material has suitable properties the finished woven fabric may not. This is because of the strong influence of the woven geometry on the final behaviour. It has been found that drape and lustre are very good properties to quantify some aspects of the feel and look of fabrics, in the context of conservation, and to provide a common language to ensure that the specification incorporates these aspects.     

LabVIEW在智能高压开关机械特性测试中的应用

本文介绍了使用LabVIEW进行智能高压开关机械特性计算分析平台构建的过程,详细介绍了软件流程的实现。最后通过实验对比,验证了方法的可行性。