基于认知负荷理论的多媒体课件设计研究

多媒体课件的信息加工主要包括信息的选择、组织和整合策略,它直接影响学习者对学习内容的选择、组织和整合。目前高校的多媒体课件比较注重体现多媒体技术形象直观、信息量大、效率高等特点,却往往忽视过量信息加工和学习者认知资源有限之间的矛盾。依据认知负荷理论,合理设计多媒体课件中文字、图片、声音、动画和视频等的呈现方式,可以降低认知负荷,最大限度提高学习者的信息加工水平,以达到提高教学效果的目的,同时对指导当前多媒体辅助教学实践也有重大意义。     

多点融合的计算机专业跨界人才培养模式

随着全球新一轮科技革命和产业变革的加速,新产业和新技术提供了新的经济发展模式。这种模式需要的是高素质复合型的跨界人才。本文提出了一种基于一个中心、两个结合、多点融合的创新型计算机专业跨界人才培养模式的构建。该模式基于OBE理念,通过分层次和多类别的课程体系重构,建立了跨界人才培养质量保障机制和考评评价机制来构建跨界人才培养模式。该模式的建立,对于培养新工科背景下的计算机专业人才具有重要意义,可供国内地方高校计算机专业人才培养参考。     

工程教育下计算机类课程的实践教学模式

根据工程教育专业认证"以学生为中心"的基本理念以及对学生解决复杂工程问题能力培养的核心要求,本文首先对地方高校计算机类课程实践教学存在的问题进行了分析,然后讨论了如何构造解决计算机领域复杂工程问题的工程化实验实训项目,最后着重探索了"SPOC(Small Private Online Course,小规模限制性在线课程)+项目驱动"的立体化实践教学模式,以期能提升学生解决计算机领域复杂工程问题的能力。     

东北油气分公司推进业务外包工作的成功经验及启示

为了解决油气主体岗位不能使用劳务派遣用工的难题,规避劳务派遣用工总量超标的法律风险,经过调查研究,结合东北局实际情况,制定了业务外包工作方案,并按方案要求,清理了混岗,解决了劳务派遣员工的合理合法诉求,完成了业务外包工作,调整了用工模式,实现了规范用工管理。     

Combined damaged elasticity and creep modeling of ceramics with wedge splitting tests

During the crack propagation in common refractory ceramics at high temperatures, creep may occur in the wake of a process zone and in front of a crack tip. To account for this phenomenon, an integrated material constitutive model was developed by combining the mechanical behavior following isotropic damaged elasticity concept and Norton-Bailey creep. The post peak fracture behavior followed the bilinear softening law and a simple criterion was defined to consider the creep asymmetricity in uniaxial tension and compression. The material constitutive model was applied to inversely identify mode I fracture parameters with wedge splitting tests of an alumina spinel material at 1200 °C. It showed that the mean ratio of the nominal notch tensile strength to the actual tensile strength was 1.93 and the mean pure fracture energy was 297.6 N/m. In addition, the creep contributed 12.9% on average into the total fracture energy.     

超精密加工伺服系统滑模控制技术研究

为实现超精密加工伺服系统高精度跟踪控制，建立了交流水磁同步电机伺服系统模型，研究了带扰动观测器补偿的滑模变结构控制方法，仿真结果表明，该控制策略有效地抑制了负载扰动引起的抖振，对参数波动也有较强的适应能力，可以有效地提高系统的跟踪特性。     

基于场景的车载设备测试用例自动生成方法研究

列控车载子系统是确保列车的安全运行的关键设备,对车载子系统进行测试是保证功能实现与系统规范一致性的重要手段。针对传统手工测试用例生成的效率低、耗时长、工作量繁杂、可重用性低等缺陷,提出一种基于场景的车载系统测试用例自动生成方法,依据CTCS-3级列控系统技术规范构造车载子系统场景树模型,由实时系统测试用例自动生成工具Co Ver对列车运行模式转换自动机网模型生成基于场景的测试用例,并由运行模式最小重复度选择算法生成全模式覆盖的测试序列。结论证明,基于场景自动生成的测试用例能够覆盖全部车载模式,并提高了模式转换测试序列生成效率。     

地方本科院校计算机类专业人才培养模式的探索与实践

地方本科院校计算机类专业承担着为我国培养计算机应用型人才的重任,探索新时期下计算机应用型人才的培养模式,其根本出路就是坚持"以就业为导向、以服务为宗旨,走产学研结合之路"。在培养目标上,目前应分为以下4个方向:计算机硬件维护与应用、计算机网络安全技术、计算机程序开发技术、计算机信息管理。在理论教学上采取"基本素质模块"+"专业基础模块"+"专业主干模块"+"专业创新模块";在实践教学上采取"基本技能"+"专业技能"+"开发设计技能"+"岗位综合应用技能"。     

Visual Analytics for Exploring Local Impact of Air Traffic

The environmental and noise impact of airports often causes extensive political discussion which in some cases even lead to transnational tensions. Analyzing local approach and departure patterns around an airport is difficult since it depends on a variety of complex variables like weather, local and general regulations and many more. Yet, understanding these movements and the expected amount of flights during arrival and departure is of great interest to both casual and expert users, as planes have a higher impact on the areas beneath during these phases. We present a Visual Analytics framework that enables users to develop an understanding of local flight behavior through visual exploration of historical data and interactive manipulation of prediction models with direct feedback, as well as a classification quality visualization using a random noise metaphor. We showcase our approach using real world data from the Zurich International Airport region, where aircraft noise has led to an ongoing conflict between Germany and Switzerland. The use cases, findings and expert feedback demonstrate how our approach helps in understanding the situation and to substantiate the otherwise often subjective discourse on the topic.     

An Exploratory Study of Data Sketching for Visual Representation

Hand‐drawn sketching on napkins or whiteboards is a common, accessible method for generating visual representations. This practice is shared by experts and non‐experts and is probably one of the faster and more expressive ways to draft a visual representation of data. In order to better understand the types of and variations in what people produce when sketching data, we conducted a qualitative study. We asked people with varying degrees of visualization expertise, from novices to experts, to manually sketch representations of a small, easily understandable dataset using pencils and paper and to report on what they learned or found interesting about the data. From this study, we extract a data sketching representation continuum from numeracy to abstraction; a data report spectrum from individual data items to speculative data hypothesis; and show the correspondence between the representation types and the data reports from our results set. From these observations we discuss the participants’ representations in relation to their data reports, indicating implications for design and potentially fruitful directions for research.