基于结构方程模型的老年人APP用户体验设计研究

目的 探索APP设计要素、用户体验、用户总体满意度之间的相互关系,提升老年人对APP的用户体验。方法 提出基于结构方程模型的老年人APP用户体验设计研究方法。首先,以文献理论为基础,构建理论模型图并设定相关变量和假设;其次,通过文献研究,选择相关设计要素,通过正交表生成设计样本;再次,根据用户体验评价要素构建用户体验评价指标,被试者对设计样本进行评估实验,通过因子分析法提取用户体验评价指标中的潜在变量,并将相关指标作为可测变量;从次,建立设计要素与本能层次、行为层次、反思层次和用户总体满意度之间的结构方程模型,利用实验数据对结构方程模型进行模型拟合,并进行拟合评价和信效度分析;最后,对结果进行解释和讨论。结论 以老年人医疗APP为例,通过结构方程模型验证了设计要素是影响老年用户体验的重要因素,并提出相关的设计指导。     

用户眼动行为与网站设计要素关系研究

运用用户体验、感性工学、交互设计理论,以团购网站中浏览、搜索、查找、登陆购买这4个典型的交互任务为研究对象,研究交互设计要素与用户眼动行为之间的关系.首先,运用多维尺度和聚类分析选取4个代表性团购网站,并运用形态分析法提取网站的交互设计要素;其次,通过眼动实验获取用户在完成各交互任务中的眼动数据,并筛选出可反映用户情感体验的眼动指标;最后,通过数量化Ⅰ类理论将网站的交互设计要素进行编码,运用偏最小二乘回归方法建立不同交互任务下设计要素与眼动指标的关系模型,并给出了提高用户体验的设计变量组合建议.     

基于心流理论的健身APP设计研究

目的提升用户在使用健身APP过程中的用户体验。方法通过对目标用户的行为进行分析,总结用户体验阶段的特征及表现,提炼出相对应的心流体验的要素和设计因素。从清晰的目标任务、愉悦的界面表现、有效的操作交互和激励沉浸的情感体验这4个层面,总结能激发心流体验的16个健身APP的设计原则。在此基础上,建立了心流理论视角下的健身APP设计模型。以瑜伽健身运动为例,设计了一款Yogaland APP。结论将心流理论引入健身APP的设计研究中,能显著影响用户的行为动机,满足用户的情感需求,创造丰富全面的互动体验,为现有的健身APP设计提供一定的方向。     

基于沉浸理论的儿童教育类APP交互设计

目的分析儿童教育类APP的发展现状及交互设计现状,探寻其在交互体验上的不足之处。探讨沉浸理论对于儿童教育类APP交互设计的可行性、有效性及实用性,并针对该类APP的沉浸式交互体验设计提出一些设计策略和建议。方法通过对儿童的认知能力、视觉和听觉特征、能力限度等方面的行为特征分析,结合APP实际案例,并以沉浸理论为指导来探索虚拟学习环境系统设计的关键因素,进而探寻儿童教育类APP的交互体验优化方案。结论在儿童教育类APP的交互逻辑架构设计和系统表象设计中,应充分考虑儿童的心理认知能力和行为限度,强调以儿童体验为核心,尤其以沉浸理论为指导,进而从交互和表象两个方面去营造强烈的临场感、参与感和成就感,来提升儿童学习的主动性及学习效率。     

基于时间—情绪知觉的下拉刷新加载方式研究

目的研究互联网移动端应用软件中的下拉刷新加载页的加载时长、交互动效及加载动画对时间知觉和情绪感受的影响。方法为了更深入研究不同因素的影响效应,针对下拉刷新加载页的加载时长、交互动效、加载动画三个不同因素分别进行了两次实验。在实验一中,采用3(加载时长为2 s、5 s、10 s)×3(交互动效类型为A、B、C)被试内设计,在实验二中,采用单因素(加载动画:概念加载模型,情趣化动效图,交互性场景)被试内设计。通过两次实验得出,加载时长、交互动效、加载动画对时间知觉及情绪感受均有显著影响。结论有效控制加载时长,结合可以缓解用户负面情绪、缩短用户时距估计的C类型交互动效,以及C类型交互性场景加载动画设计,最终构成的下拉刷新加载页面是改善用户等待体验的有效手段。     

启动时态界面中动效的交互设计研究

目的研究启动时态界面中动效的用户体验影响。方法通过分析设计案例和对比实例,探讨动效在当前移动终端应用软件交互设计的应用情况,提出启动时态的动效设计应该遵循最重要的设计原则,并得出采用动效来提升用户体验的几种具体的交互应用方式。结论动效可以通过在启动时态界面中的视觉元素、反馈形式、运动形式和场景这4个方面的交互设计来提升用户满意度。     

基于用户体验的老年人移动交互界面设计研究

为解决老年人医疗软件交互界面用户体验满意度较低、操作效率不高等问题，提出一种以用户为中心的老年人医疗移动交互界面开发方法来优化用户体验。首先采用焦点小组法对老年人医疗交互界面的主要设计要素展开分析，并通过正交实验，明确实验所需的交互界面设计方案，运用因子分析获取用户评价指标中的关键项目，并架构评价层级体系，通过联合分析获取医疗移动交互界面各设计要素及其类型的效用值，得出老年用户对医疗移动APP交互界面设计要素的偏好，并获取最优设计要素，从而制定相应的设计策略。依据老年人对用户体验各设计指标的诉求偏好，有效地对老年人医疗APP的用户体验进行优化，并设计出界面交互原型，进而为设计师开发出符合老年人用户体验的APP提供参考。     

基于联合分析法的非遗文化APP界面设计

目的 研究非遗文化APP交互界面设计。方法 首先采用文献研究及竞品分析法筛选出具有代表性的非遗文化APP样本,归纳出视觉呈现、功能属性、交互体验3个维度,以此确定非遗APP中的关键设计要素及要素水平,然后通过正交实验法确定18项设计组合方案,并依据用户需求偏好进行量化打分,根据实验数据计算并得出设计要素及各项要素水平的效用值和重要性,在此基础上确立非遗文化APP的界面设计原则,最后以蔚县青砂博物馆APP为例进行案例分析。结果 针对非遗类APP的问题和用户偏好度,设计出用户满意度最高的非遗文化APP交互界面。结论 联合分析法作为一种针对多因素的数据统计分析方法,能够使设计师更好地了解用户对非遗文化APP交互界面的偏好,提升用户体验感,提高用户黏度,从而达到传播非遗文化的目的,为类似APP界面设计提供设计思路。     

基于沉浸理论的农区畜牧业服务设计研究

目的 探究沉浸理论介入农区畜牧业服务设计的策略,构建更具用户体验感的农区畜牧业服务设计系统。方法 根据沉浸理论的内涵与我国农区畜牧业发展现状,分析沉浸理论介入农区畜牧业服务设计的经济价值、社会价值和文化价值,针对农区畜牧业存在的问题及沉浸理论可行性分析,构建沉浸理论下的农区畜牧业服务设计策略。结果 首先对河南省新野县畜牧业现状进行调研分析;其次基于服务设计思维与设计策略进行服务系统图及蓝图设计,并进一步设计以用户为中心的服务载体——恒永牧场APP、畜牧市集及配套应用小程序,来实现新野农区畜牧业用户的沉浸式体验;最后通过沉浸效果评估,验证了沉浸理论介入农区畜牧业的可行性及重要性。结论 沉浸理论的融入能够改善用户体验,促进农区畜牧业的高质量发展,为我国畜牧业服务系统的创新设计提供了新的思路和方法。     

基于心流体验的音乐短视频类APP交互设计研究

目的论述在情感体验时代产品激发用户产生心流体验的重要性,研究在心流体验事前阶段视角下抖音优化用户对产品的识别、使用、沟通的具体交互设计方法,并探索音乐短视频类APP需要的交互设计策略,以实现其交互设计思维和效果的完善,提供给用户更佳的体验。方法首先了解心流体验理论的基本概念和特征,再着重以音乐短视频APP抖音为例,结合其设计方法和具体案例进行分析。在心流体验事前阶段呈现的清晰明确的目标、准确而即时的反馈、技能与任务挑战的平衡三个特征的基础上,研究抖音通过明确的产品讯息、良好的交互体验、即时的反馈机制来激发用户心流体验的设计方法。结果能够证实从心流体验出发是优化音乐短视频类APP的重要设计思路。结论心流体验理论可以为具有精良用户体验的音乐短视频类APP的交互设计带来新的想法和策略。     

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.     

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.     

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.     

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.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

Analysis of marine hydrobiont lipid extracts as possible cryoprotective agents

We studied a combined effect of the cryoprotectants both of lipid and carbohydrate origin at the presence of DMSO or without it on cell viability and the RNA synthesis in the embryonic mollusc and echinoderm cell cultures obtained at different developmental stages. Cryoprotective properties of exogenous lipids correlated with their thermotropic behavior. Lipid extracts from marine hydrobiontes, which thermal transitions are characterized by relatively small part of calorimetric thermogram area lying at temperatures above 0 °C (6–18%), were found to possess a considerable cryoprotective activity. The results are discussed in relation to the prediction of the cryoprotective activity of lipid extracts for marine animal cells. In addition, it was found that marine invertebrate cells can be cryopreserved without DMSO at the presence of trehalose and lipid extracts of some marine hydrobiontes.     

Low-Temperature Properties of Silver

Pure silver is used extensively in the preparation of high-temperature superconductor wires, tapes, films, and other configurations in which the silver not only shields the superconducting material from the surrounding materials, but also provides a degree of flexibility and strain relief, as well as stabilization and low-resistance electrical contact. Silver is relatively expensive, but at this stage of superconductor development, its unique combination of properties seems to offer the only reasonable means of achieving usable lengths of conductor. In this role, the low-temperature physical (electrical, thermal, magnetic, optical) and mechanical properties of the silver all become important. Here we present a collection of properties data extracted from the cryogenic literature and, to the extent possible, selected for reliability.