新型教学模式——"混合式教学"的出现,促进了网络课堂与实体课堂进一步的融合.随着信息技术的发展,一种新型教学助手——"云班课平台"也逐渐受到人们关注.基于网络环境中的云班课平台为教师线上教学提供了便利,打破了以教师为主体的传统教学模式,还课堂于学生.以云班课教学平台为技术支持的混合式教学模式,展现了一个师生互动、生生互动、生生参与的全新教学方式.这种教学方式将会对教育理念与教育模式产生积极影响,值得我们进一步探索研究.

The The large area coverage of network and the upgradation of intelligent software promote the further reform of network teaching. With the discussion of hot topics of Online teaching and Network teaching, teachers are also experiencing how to adopt appropriate teaching methods to solve the teaching problem of “being apart from each other” between teachers and students. The rise of platform technology and technical resources also promote the innovation of teaching. This paper will research on the mixed teaching mode based on PBL learning method, using platform tools to explore the practical significance of this teaching mode in secondary vocational classes, it provides a kind of thinking framework for teachers’ reference.

STEAM教育是一种以跨学科整合知识的方式培养学生综合素养的教育理念,符合中职教育培养目标.将该理念应用于中职教育,提炼出知识迁移与整合能力、实践探索与协调能力及学科融通与延展能力为模型元素,构建出学生职业能力模型.通过分析各元素,阐明该理念下中职机械加工类专业学生应具备的知识与技能.

利用OpenCV与VC＋＋语言平台开发了1套基于机器视觉的葡萄采摘点三维空间定位系统，并阐述了运用机器视觉技术实现葡萄目标从相机图像获取到采摘点三维空间数据计算的实现过程。同时利用直线夹角阈值、可信区域、点到直线最小距离与深度间距阈值4个约束条件改进了传统的葡萄采摘点果梗定位方式，使采摘点较好地定于葡萄果梗中部，后经立体匹配与双目视觉三维空间定位原理求取葡萄采摘点的三维坐标，提高了葡萄采摘点定位的精准度。

由于传统的技能实训类课程教学受设备成本、维护保养等条件的制约,使得课程考核与评价环节投入大而效果不佳.本研究将虚拟现实技术与技能实训教学的考评相结合,将三维虚拟环境下的人机交互技术运用于技能实训课程的操作考评,提出了基于虚拟现实的实训类课程考评系统设计方法.从考核内容及评价方法、三维虚拟考评情境、考评规则库以及评价结论等四方面阐述了考评系统的设计.以模具拆卸实训为例,介绍了三维可视化模具结构拆装考评系统的开发流程,为技能实训教学考评提供一种新的模式.

结合职教师范生及第二课堂的现状及特点,分析了第二课堂对培养职教师范生人文素质的重要性;提出了第二课堂课程化的理念,并构建了第二课堂课程体系.实践证明,该课程体系是提高职教师范生人文素质的有效途径.

Traditional fuzzy C-Means (FCM) clustering algorithm is sensitive to the initial value and converges to a local minimum easily that may lead to produce poor phenomena of segmenting image. This paper uses improved artificial bee colony to optimize FCM algorithm and uses improved methods to segment image. The improved algorithm (GABCFCM) uses Gbest-guided artificial bee colony (GABC) algorithm which searches the global best solution strongly, and it uses FCM which has ability to cluster data. Clustering segmentation of gray image is realized in this paper. Experiment results show that GABCFCM algorithm does not increase the consumption of time obviously and it improves the speed of converging to the global best solution by comparing with the ABCFCM which uses traditional artificial bee colony algorithm to optimize FCM. GABCFCM improved the reliability of image segmentation by using FCM algorithm greatly. GABCFCM can be applied to image processing of requiring higher relative velocity in the same number of cycles. This paper also uses some steps to improve PSABCFCM and PSABCLUTFCM and uses them in the fields of image segmentation.

为解决基于模糊C-均值聚类(FCM)的图像分割算法需要预先给定初始聚类数目和聚类中心,易使得算法陷入局部最优的问题,提出一种改进的人工蜂群优化模糊聚类的图像分割方法.该方法在传统的人工蜂群的基础上进行优化,以FCM算法中目标函数为基础改进人工蜂群的适应度函数,运用蜂群行为中的采蜜蜂、跟随蜂和侦察蜂的分工合作来快速求解图像中的最优初始聚类中心,将求出的最优聚类中心输入给FCM进行处理,根据最大隶属度原则对果实图像进行分割.以300幅不同光照情况下拍摄的夏黑葡萄果进行分割试验,试验结果表明,改进的图像分割方法能更快地将水果从自然环境中分割识别出来,单幅图像平均分割时间为0.219 3 s,正确分割率达到90.33％,能满足采摘机器人及水果分级系统对目标图像的实时性要求.

“机械学科教学法”课程是机械类职教师范生专业课程体系中师范模块的一门重要课程,是介于职教教师教育理论与教学实践之间的中介性课程.“机械学科教学法”在中等职业学校机械类教师培养过程中具有重要性,需要探讨其属于行动类课程的特征,构建该课程知行一体化的课程体系和教学模式,进行完整的教学实践.教学实践表明,“机械学科教学法”采用知行一体化的课程模式对于职教师范生与教师岗位的无缝对接具有重要意义.

Tianjin vocational technology normal university, with the opportunity of our country vigorously develop vocational education, carried out the"great vocational education teacher training plan", for its training objectives, research and develop the excellent class vocational education teacher training plan and implement, constructed by the education faith and responsibility, vocational school teachers' ability, curriculum system, combining the mechanical professional ability of the cultivation of the good results have been achieved.

It establishes the kinematic simulation environment of the robot arm with five degrees of freedom in OpenGL platform , shows the detail about the process of building the model , the establishment of the coordinate system and the derivation of the kinematic equation .Using Matlab robot toolbox , it verifies the kinematics equa-tion of the manipulator model and the movement of the manipulator model .This provides a reference for the re-search of the robot in the virtual environment .

This system uses numerical curve saw of MJS1325 made by Guangdong Weideli as the object of this study. By analyzing the basic structure and working principle of the numerical control curve saw, the 3D data model was created and rendered,then the model is put into EON Studio. The movement simulation is achieved by using the function node and a scripting language of the software. VC# is used to realize the curve of timber sawing interactive virtual machining process simulation.

In order to adapt to the agricultural picking robots needing to recognize grapes quickly and accurately , a new segmentation method that based on HSI color space and fast fuzzy C-means clustering ( FFCM ) algorithm characterized by histogram informations is presented .This method is that original RGB images is transformed into HSI images , and using H component as clustering segmentation of data to cluster gray image according to the FFCM algorithm .By analying the testing of xiahei grapes under natural light , facing of the light and backlight ,the image segmentation method of this paper can split grapes fastly from the complex natural environments and provide some references for the research of agri -cultural robots .

模拟井下工况,利用钻杆/套管摩擦磨损试验机试验分析了摩擦行程、钻井液黏度、接触载荷和钻杆转速等因素对套管磨损的影响规律.得出套管磨损量与摩擦行程、磨损率与接触载荷均呈现近似的线性关系;接触力增大,摩擦因数总体上有增大的趋势;增加钻井液黏度可以使摩擦因数有所降低,但不能大幅降低套管磨损;钻杆转速超过140 r/min时,转速增加引起的摩擦副振动逐渐加剧直至共振,导致套管磨损率出现较大幅度的上升.该研究成果为钻井参数优选、套管磨损预测和减磨优化设计提供了参考依据.

The NC lathe machine has many moving parts all with a special functions. To operate the machine you should understand the names and their movements. The Movement Simulation of NC Lathe Machine is developed by virtual reality development platform of Eon Studio. A 3D model of NC Lathe machine is built through 3D realistic modeling tools of Solidworks software, and transformed into Eon Studio. Collision object node is used to avoid the overlapping between objects during simulation.

对高等教育自学考试性质、教育教学资源现状和考生状况进行分析的基础上,阐述了影响和制约高教自考考生实践能力培养的因素。立足于高等教育人才培养目标和社会需求,结合机械专业的专业特点,对自考考生实践能力的培养途径和实施方法进行了探讨,提出了完善考核制度和命题、创新课程体系、改革实践环节教学模式等具体措施。

《数控电火花线切割加工技术》是天津现代职业技术学院精密机械技术专业群建设的技术核心课程。通过对传统课程的整合，基于工作过程导向设计了教学项目，开发了适合项目教学的一体化校本教材，并在教学实施中进行了实践验证，该课程开发对于整个专业群的建设将起到了积极的示范作用。

“普教育有高考，职教育有大赛”，生动反映了职业教育技能大赛受到关注的程度。作为学校中执行和承担教学任务，担负学生职业技能培养工作的专任教师，职业技能大赛对其职业能力的提升非常显著。通过对职业技能竞赛规则的分析与深入研究，结合专业教学和指导学生参赛的经过，总结归纳职业技能竞赛影响教师职业能力因素，为职业技能竞赛的良性发展作出有益探索。

Using VB.NET language,an automatic design of gear and modeling integration system is developed based on Pro/E.Inputting design requirements in user interface,the system can calculate and check strength automatically,then output the modulus of gear and number of teeth.Finally by VB API,the system can generate 3D model of gear directly from design parameters,realizing seamless connection with Pro/E.

The purpose of College moral education is to cultivate all-round development of people, combination of perceptual knowledge and rational knowledge, current college students＇ Ideological and political education effectiveness is low, due to lacking of emotional education mechanism, with the humanities concern idea, universities which proceed with establish the educational host-guest exchange mechanism, strengthen psychological counseling, social practice, so as to promote the overall development of college students, cultivate their sense of happiness.