基于眼动追踪的自助挂号机界面可用性设计研究

为了保证交互界面可用性设计的合理性,综合定量分析与定性分析的方法,构建基于眼动追踪和可用性问题量表评估模型,将定量分析与定性分析结合。对现有某医院自助挂号机交互界面进行改良设计,利用Axure7.0提取交互界面原型,对其进行眼动追踪定量绩效测试,获取有效率、效率、扫描轨迹图等数据指标;结合用户访谈输出的可用性问题统计量表,提取出挂号机交互界面的改良要素,指导界面设计改良。通过可用性评估验证该方法的有效性,为相关产品界面设计提供参考。     

基于认知负荷的人机交互数字界面设计和评价

复杂系统信息量大,信息结构复杂,容易造成数字界面设计与用户认知失衡, 文中针对这一问题,基于认知负荷的视角,展开了界面设计和评价研究以提高人-数字界面交互工效。从数字界面信息加工机制出发,结合认知资源有限理论和认知图式理论探讨了数字界面认知负荷的生成机理,提出了数字界面外在认知负荷、内在认知负荷和相关认知负荷的3个来源及相应的减少认知负荷的界面设计策略。将视觉搜索机制和眼动生理评估有效结合起来,提出了基于搜索深度-搜索广度和内敛度-发散度的数字界面眼动认知评价模型,在一定程度上实现了数字界面研究的认知根源挖掘和主客观统一。     

绳锯机控制器人机界面可用性评估研究

为提高绳锯机控制器界面交互的可用性水平,以可用性设计原则为基础,构建了基于眼动追踪技术和用户测试的操作界面可用性评价指标体系.根据用户行为特点,综合考虑产品界面的人机尺度和视觉感知需求,改进了控制器的人机界面交互设计方案,并将原界面和改进界面进行眼动试验评估,分析任务完成时长、正确率、至首次注视时间等眼动指标数据及热点图与轨迹图;结合用户测试和可用性量表法,从客观和主观两个角度对设计方案进行验证和评估.结果表明:改进界面的操作效率更高,有效提高了人机界面的可用性和用户满意度,该评估方法可为绳锯机控制器界面的人机交互可用性研究提供参考.     

基于眼动追踪技术的农机装备外观改良设计

为提高农业机械装备外观设计评价的客观性,将眼动追踪技术应用到设计中。以斜插式穴盘苗嫁接机为例,在改良设计过程中,采用眼动追踪技术得到用户对原设备外观特征的关注点和兴趣点,以此确定重点改良区域及特征,并应用人机工程学和色彩心理学等相关理论与方法进行设计。应用模糊综合评价方法验证了眼动追踪技术在辅助斜插式穴盘苗嫁接机外观改良设计上的可行性,提高了设计过程中的客观性,为同类装备的外观设计提供参考。     

粗细联纺纱机操作系统界面的人机交互设计

针对当前国内的粗细联系统普遍存在的交互界面设计问题,进行了相关研究。通过人机工程学及交互设计的研究方法,设计了符合现代化操作流程、功能齐全、外观突出的人机交互界面,增强了用户的使用情感及操作情感,提高了用户的满意度。最后,通过眼动仪装置作为界面验证的主要工具,将原界面与改良后的界面进行对比,为粗细联操作系统界面的研究提供参考依据。     

网址导航界面链接按钮形式对视觉搜索的影响

为了探索网址导航界面中网站链接按钮的形式对用户认知以及绩效的影响。文中在对现有网址导航界面进行分析和设计的基础上,通过眼动追踪技术获取网站导航网页界面中视觉搜索的眼动数据,并按注视程度将其划分水平,结合网站链接按钮的另外两个设计要素(颜色和有无图标)作为实验材料的编码元素,设计实验并测试用户在上述网址导航原型上操作任务的绩效。结果表明,链接所处位置的注视水平和有无图标对链接按钮的搜索绩效有显著影响,更高的注视水平位置和有图标的编码形式能够促进网址导航的搜索绩效。鉴于链接按钮不同编码形式对网址导航界面搜索绩效的影响,网址导航界面设计可以采用更有区分度的链接按钮排列,以提高界面的可用性。     

基于眼动跟踪的战斗机显示界面布局的实验评估

以界面的客观评价为目的,文中运用眼动追踪仪对界面的布局设计方案进行了实验评价与分析。通过对不同方案进行的测定,得到注视轨迹、注视热点、注视点数量和注视时间,并利用这4项数据对布局设计方案进行了评价。选择出注视轨迹和注视点空间分布合理的布局,并将它作为优选方案。对实验设计的分析表明,在布局评价中注视轨迹、注视热点的数据对...     

沉浸感界面交互设计评估方法研究

软件开发过程中,界面交互设计是不可忽视的环节。用户的沉浸感界面设计是指如何使用户在软件界面的使用过程中体验流畅而愉悦。基于模糊层次分析法(FAHP)从易用性、空间感、流畅性、表现力4个方面构建沉浸感界面交互设计评估指标结构模型,结合信息界面设计,对项目当前版本与2个迭代方案的各因素指标,进行权重计算和赋值打分实现量化评价,探索设计开发过程中沉浸感界面交互设计的量化评价方法。     

眼动追踪技术的研究述评

眼动追踪技术作为一种研究个体认知水平及心理状态的新型研究手段,被广泛地应用各个领域的基础研究和应用研究中。本文主要从眼动追踪仪的基本原理及其种类、眼动追踪指标及心理含义、眼动追踪技术的应用三个方面对眼动追踪技术进行了介绍,为不同领域的研究者开展眼动追踪研究提供有价值的参考。     

测井车中控舱人机界面设计眼动追踪评价

为提高测井车中控舱人机界面交互设计的合理性,提出一种基于眼动追踪的综合评价方法。为提高评价的准确性及可靠性,通过眼动试验模拟目标用户在工作环境中的认知过程。首先分析综合热点图,直观得到认知焦点分布情况,其次选择首视点持续时间、总注视时间、注视点个数、平均瞳孔直径作为评价指标进行数据采集,通过结合熵的综合赋权法将不同眼动数据进行量化计算,加权比较后得到各设计方案的优异度排序,从而优选测井车中控舱人机界面交互设计方案。最后以某品牌某型号测井车中控舱人机界面交互设计为例,结合眼动试验进行实例验证,结果表明:基于眼动追踪的综合评价模型可辅助修正设计方案,有效提高概念设计阶段的效率,为测井车中控舱等大型机械控制舱人机界面交互设计提供评价方法。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...     

分布动态载荷识别的抗噪处理

针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....     

基于MELTAC-N平台的核电厂安全级DCS环网研究与测试

针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。     

The laboratory simulation of abrasive wear

Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.     

ANGULAR DISTORTION ALLOWABLE VALUE AND ASSESS METHOD OF WELD ON COKE TOWER

A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.