基于符号学的车载手势交互的手势轨迹研究

目的 手势交互作为一种非接触式的自然交互方式,将广泛应用于车载交互中。通过研究符号学理论结合感性研究方法,分析符号学与车载手势交互的手势轨迹之间的关系,从而形成一个从手势轨迹角度研究车载手势交互的设计流程,更好地辅助车载手势设计。方法 以符号学理论为基础,运用符号学的外延意义和内涵意义,结合语义差异法、意象尺度法、层次分析法等,收集并分析车载功能手势轨迹样本偏好,挖掘用户对手势轨迹符号所产生的深层次需求,将分析和提炼出来的关键手势轨迹符号应用于手势轨迹设计,探索符号学与车载手势交互的手势轨迹之间的关系。结论 运用符号学理论对手势轨迹符号进行研究,提出了一种基于符号学理论研究手势轨迹的方法和流程,验证了符号学可以有效地应用于车载手势交互的手势轨迹设计。     

基于移动端设备用户界面载入模式的情感化设计研究

移动设备上用户界面载入模式的设计,是用户体验设计中必要的一环。文章研究不同情境下页面加载过程中的界面交互方式,以及相应的设计策略和实现方法。页面加载过程中,界面交互动作长时间缺失相应反馈,与屏幕交互的挫败感会让用户感觉到时间耗损,屏幕界面的吸引力相应下降。人机界面交互过程中,营造用户与界面交互的积极正面反馈,愉悦用户的情绪会有助于提高用户接受性和包容性。而界面加载过程中的图形视觉张力强化、图形动态化以及嵌入游戏化机制等设计策略都可以给交互过程增添趣味性,进而减缓用户对于时间流逝的感知,舒缓等待的燥虑,以达到提升用户体验设计的目的。     

基于具身认知的就医导视系统适老化设计研究

目的 从具身认知视角探索就医导视系统界面适老化设计,优化界面可用性,提升老年用户的交互体验。方法 引入具身认知理论,归纳总结具身交互特征,从功能目的、交互行为和情绪表现三个层面提炼产品界面适老化设计要素;调研老年用户就医导视系统交互过程中的使用体验与具身认知行为,绘制用户体验地图挖掘老年用户痛点,基于适老化设计要素解析得到用户具身认知需求并推出界面设计需求;结合就医导视系统设计层级,从“情境化”的功能流程、“生动化”的交互体验和“专注化”的情绪体验等方面提出基于具身认知的交互界面适老化设计策略;展开就医导视系统适老化设计实践,以验证该适老化设计方法有效性。结论 身体体验、心智模型及身体与环境的交互行为是影响认知理解的重要因素,老年用户在短期记忆、信息分析和决策力等方面的认知能力有所退化。因此,基于具身认知视角建立的交互设计方式,为适老化设计提升用户体验提供了一种可行的策略。     

基于手机使用情景的交互设计研究

目的明确使用情景的定义,并针对现有产品在不同使用场景下形成的交互形态进行分析,探究不同场景下产品使用时用户的交互诉求以及期望的交互体验,达到探索新的功能及交互方式的目的。方法以使用情景理论依据为研究基础,结合诺曼UCD理论和诺曼行为分析系统,了解用户在心理世界与现实世界中对信息处理的分类与筛选的方法,以此对用户在不同使用情景下的交互行为进行分析或预期,提出基于使用情景的交互设计方法基本方式,为交互设计提供新思路。结论通过得出的基于使用场景的交互设计方法,以现有手机拍照交互设计为实例,提炼出用户在不同场景中交互体验的需求痛点,针对用户的使用痛点,结合用户的使用诉求,提出创新的交互方式,以此初步证明研究思路的可行性。     

基于车载人机交互技术的驾驶学习辅助系统

通过分析车载人机交互技术在驾驶教学中的设计研究与应用发展,总结了在驾驶辅助的功能与操作交互方式不断增加的背景下,驾驶学习中存在的诸多问题。运用驾驶环境下人机界面设计的设计流程、评价指标及优化方法,调查了辅助驾驶教学设计在国内外应用状况,分析了此类产品的功能需求与分类。并在此基础上通过用户研究、用户体验地图、服务蓝图以及KA卡片法确定了基于车互联技术下的驾驶教学辅助交互系统,开发了车辆中控、前挡风HUD及手机相应APP的交互原型与交互界面。在设计完成后,经过一系列的原型测试评估了交互界面的实用性。验证了HUD视觉操作机制与中控交互界面在系统语音提示下,可以实现驾驶学习的辅助功能。     

手机的声音交互界面设计

从声音界面(AUI)涉及的主要生理基础入手,分析了手机声音界面的协作交互与独立交互方式。重点考察了声音界面在盲人手机上的运用,最后以问卷形式针对手机声音界面的可用性进行了用户调查和分析,初步提出手机AUI设计的可用性启发式原则。     

基于用户体验的手机界面设计路径研究

目的 探究用户体验下的手机界面设计之路.方法 提出手机界面设计在用户体验的视角下所带来的各种交互式表现,并总结出当前的交互方式无论是简单的交互还是复杂的交互都有着各自的价值意义和独特特点,是当前手机界面设计的一大趋势.基于此,从用户体验的角度对实际的设计形式进行探讨,从基础的视觉层面延伸至情感层面,对评价层面也进行了详细的分析与论述,对色彩与情感等在实际交互中的作用及应用展开分析,在细节中找到融合之道,并总结出具体的应用方向和措施.结论 从用户体验设计的角度出发,创新手机界面设计的思路与方法,能够在视觉体验层面获得更好的效果,同时强化界面设计的功能,让当前的手机界面设计能够在创新中实现更加长远的发展.     

基于符号学的手机图标设计问题研究

以符号学理论为基础,通过对各种不同系统的手机界面图标演变和发展进行归纳与符号意义解析,论述了图标符号化的发展趋势及设计特点,最后在实例扩展研究的基础上,对手机图标的前期用户调研与分析、元素提取、风格定位和视觉效果等几个方面进行重点设计研究。     

智能汽车的车内周边交互体验研究

目的研究智能汽车车内交互中的次要驾驶任务及其带来的周边交互体验。方法根据注意力理论定义周边交互含义以及周边交互设计内容,确定智能驾驶场景下周边交互体验的调研方向,对量化的周边交互任务进行分类,并通过案例解析周边交互设计对于智能汽车交互体验的提升。结果周边交互设计能够减少注意力负担,为用户带来更好的驾驶体验。结论研究认为,周边交互是解决驾驶环境中多任务并行的重要交互方式之一。     

手机交互界面中图标的隐喻设计研究

目的研究手机交互界面中图标的隐喻设计。方法从符号学的角度论证了视觉隐喻手段在手机界面图标设计过程中应用的必然性,论述了隐喻在界面图标设计中的重要作用,并从隐喻设计的类型和隐喻设计的评判标准两个方面对手机界面图标中的隐喻设计进行了研究。结论总结出了图标隐喻设计的类型及图标隐喻设计的评判标准,为界面图标设计工作提供参考。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

From Industry 4.0 to Research 4.0. Development of High Performance Fibers in the Light of Digitization

We associate a variety of innovations with the term ＂Industry 4.0＂. The pioneer of many 4.0 modifications forms the basisfor the trend towards the integrated di...     

The Research of Anti-Wear Properties of Organomolybdenum Compounds in the Engine Oils

A four-ball tester was used to evaluate the anti-wear performance of three kinds of organomolybdemun compounds in the engine oils, i. e., molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate ( MoDTC), and sulphur and phosphorus freeorganomolybdeum (Molybdate). The results indicate that a low concentration of MoDDP doesn' t improve the anti-wear properties of the commercial engine oils, but a high concentration of MoDDP can obviously improve the anti-wear properties and the load-carrying capacity of the engine oils. MoDTC doesn' t improve the antiwear properties of the engine oils, but worsens the anti-wear properties of the oils. Signifi can timprove ment of frictional and wear characteristics is obtained with Molybdate added in the commercial engine oils and the formulated oils.     

Roman iron and steel: A review

ABSTRACT

The production of ferrous metal increased during the Roman Late Republican period, Principate and Empire. The direct bloomery process was used to extract the metal from its ores using slag-tapping and slag-pit furnaces. The fuel was charcoal and an air blast was introduced by bellows-operated tuyères. Iron formed as a bloom, often as a spongy mass of metal, which contained impurities from the smelting process, including unreacted ore, fuel, slag and fragments from the furnace walls, while the metal was often inhomogeneous with varied carbon contents. Blooms were either smithed directly into bars or ingots or they were broken up, which also allowed the removal of gross impurities and a selection of pieces with similar properties to be made. These could then be forge-welded together and formed into characteristically shaped ingots. Making steel in the furnace seems to have been achieved: it depended on the ore and the furnace and conditions within it. Surface carburization was also carried out. Iron and steel were used extensively in construction and for tools and weapons. Fire welding was often used to add pieces of steel to make the edges of tools and weapons, which could be heat-treated by quenching to harden them.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Synthesis of Alumina-Zirconia Nanocomposites by Solgel Process

Al₂O₃-ZrO₂ nanocomposites were developed starting with the solgel process. Composite alumina-zirconia nanopowders were synthesized from metallorganic precursors (Aluminium secondary butoxide and zirconium Iso propoxide) using the solgel process. The parameters affecting the synthesis—solvent, concentration of precursor, R/H ratio (i.e., dilution of water in solvent)—were varied as also the temperature and pH. BET and TEM were used to measure nanosize. Diffuse reflectance spectroscopy and also qualitative optical absorption led to identical particle size estimate. The variation of process parameters was used to study the effect and interdependence of process parameters. Artificial Neural Networks was used to rigorously analyze the process. Although this led to confirmation of interdependence of parameters, the presence of a single overwhelming solvent variable was also established. Then the optimal process was used to synthesize more nanopowder. To produce bulk nanocomposite the nanopowders were sintered by varying the temperature and time period. The sintered lithoids were probed with a vickers hardness tester to measure elastic modulus, hardness, and fracture toughness. The results showed high elastic modulus, modest hardness, and very high fracture toughness.     

Certification Becomes Important for the I Quality; and Safety Supervision of the Chinese Liquor Sector

The end of 2007, over 200 unit products of more than 80 Chinese firms have passed the quality grade certification for liquor products. These products involve distilled spirits, beer, wine, yellow wine, fruit syrup wine and others, and cover over 80% of the national top-branded liquor products.……     

Deposition and Coating Properties on CVD Tungsten

Surface characterization and microstructure studies are performed on chemical vapor deposited (CVD) tungsten coating. There is about 2 μm thickness diffusion layer of tungsten in the molybdenum substrate. The thermal shock test shows tungsten coating has good adhesion with molybdenum substrate, but the elements of oxygen and carbon in the tungsten coating have the bad affection to the adhesion. The result of high-temperature diffusion experiment is the diffusion rate from molybdenum substrate to tungsten coating is faster.