Understanding the asymmetric perceptions of smartphone security from security feature perspective: A comparative study

Smartphones are being used and relied on by people more than ever before. The open connectivity brings with it great convenience and leads to a variety of risks that cannot be overlooked. Smartphone vendors, security policy designers, and security application providers have put a variety of practical efforts to secure smartphones, and researchers have conducted extensive research on threat sources, security techniques, and user security behaviors. Regrettably, smartphone users do not pay enough attention to mobile security, making many efforts futile. This study identifies this gap between technology affordance and user requirements, and attempts to investigate the asymmetric perceptions toward security features between developers and users, between users and users, as well as between different security features. These asymmetric perceptions include perceptions of quality, perceptions of importance, and perceptions of satisfaction. After scoping the range of smartphone security features, this study conducts an improved Kano-based method and exhaustively analyzes the 245 collected samples using correspondence analysis and importance satisfaction analysis. The 14 security features of the smartphone are divided into four Kano quality types and the perceived quality differences between developers and users are compared. Correspondence analysis is utilized to capture the relationship between the perceived importance of security features across different groups of respondents, and results of importance-satisfaction analysis provide the basis for the developmental path and resource reallocation strategy of security features. This article offers new insights for researchers as well as practitioners of smartphone security.     

A new mixed integer linear programming model for product development using quality function deployment

Quality function deployment (QFD) is a product development process performed to maximize customer satisfaction. In the QFD, the design requirements (DRs) affecting the product performance are primarily identified, and product performance is improved to optimize customer needs (CNs). For product development, determining the fulfillment levels of design requirements (DRs) is crucial during QFD optimization. However, in real world applications, the values of DRs are often discrete instead of continuous. To the best of our knowledge, there is no mixed integer linear programming (MILP) model in which the discrete DRs values are considered. Therefore, in this paper, a new QFD optimization approach combining MILP model and Kano model is suggested to acquire the optimized solution from a limited number of alternative DRs, the values of which can be discrete. The proposed model can be used not only to optimize the product development but also in other applications of QFD such as quality management, planning, design, engineering and decision-making, on the condition that DR values are discrete. Additionally, the problem of lack of solutions in integer and linear programming in the QFD optimization is overcome. Finally, the model is illustrated through an example.     

Consumer Awareness and Interest Toward Sodium Reduction Trends in Korea

Reduction of dietary sodium intake by lowering amount of sodium in foods is a global industry target. Quantitative information on current consumer knowledge of sodium reduction trends in Korea is unknown. The objective of this study was to quantify the consumer knowledge and awareness of sodium and salt reduction in foods and to characterize consumer interest in health labeling on the food package. Additionally, comparison of consumer knowledge status between Korea and United States was followed. Consumers (n = 289) participated in an internet survey designed to gauge consumer knowledge and attitudes toward dietary sodium, the sodium content in representative food products (n = 27), and their interest toward specific health claims, including sodium labeling. Questions regarding demographics as well as consumption characteristics were asked. Sodium knowledge index and saltiness belief index were calculated based on the number of correct responses regarding the salt level and sodium content in given food products. Kano analysis was conducted to determine the role of nutrition labels in consumer satisfaction with products. Current consumer knowledge on the sodium content in food products was high, and consumers were adept at matching the sodium content with the salty taste intensity of food products. Consumers’ knowledge of the relationship between diets high in sodium and an increased risk of developing previously reported sodium‐related diseases, such as hypertension, coronary heart disease, kidney disease, and stomach cancer, were also high. Information on the nutrition panel that influences the consumer satisfaction (trans‐fat, sodium, ingredient list, and country of origin) as well as adjective‐nutrition claim pairs that appeal positively to purchase intent of the product were identified.     

卡诺顾客满意度模型在小型药品批发企业中的应用研究

选择卡诺(Kano)顾客满意度模型,对小型药品批发企业的CS体系进行实证研究;根据卡诺模型,将企业服务的质量特性划分为3类16项指标,并将卡诺模型应用于一家具体的小型药品批发企业,基于调查结果,提出了企业服务的改进对策,为企业实施CS管理、改进服务质量提供了方向,帮助企业达到提高顾客满意度的目的.     

基于LabWindows/CVI的辐射仪虚拟检测系统

基于LabWindows/CVI研发了新型的辐射仪虚拟检测系统,该检测系统通过USB接口与主机进行连接,采用卡诺图法和Q-M算法编写测试矢量,实现了野外对辐射仪快速检测的人性化设计,并且用虚拟仪器面板代替传统仪器面板,实现数据采集、检测、显示一体化,既保障了检测的安全性,又方便快捷.     

The changes produced in the electrical resistance of vacuum-condensed films of neodymium and praseodymium when they react with hydrogen and with air

When thin films of vacuum-condensed praseodymium and neodymium are exposed to hydrogen or to air the electrical resistance changes owing to the chemical reactions which occur. The progress of the reactions was studied by means of the resistance changes which occur and by means of electron diffraction.At room temperature, neodymium reacted less readily with hydrogen than did praseodymium and the reaction rate for both metals increased with increasing temperatures. The phases formed in the various experiments ranged from the double h.c.p. structure of the metals to the high resistance cubic structure of the hydrides LnH_x with x approaching 3. Cubic and hexagonal Nd₂O₃ formed when the specimens were strongly heated by the beam of the electron microscope.Exposure to air caused the films to oxidize. Thin films approximately 250 Å thick became insulators but the oxide layer formed on thicker films protected the interior of a given film from rapid oxidation so that the film did not become an insulator.     

Intelligent Kano classification of product features based on customer reviews

Product features can be classified into different categories based on customer opinions. The rapid development of artificial intelligence and machine learning paves the way toward computational analysis of customer reviews for opinion mining. This paper presents an Intelligent Kano framework to extract, quantify, and classify different product features based on customer reviews. The framework is enabled by a novel integration of multiple artificial intelligence and machine learning techniques such as sentiment analysis and anomaly detection. A case study is conducted to validate the framework’s effectiveness. Over 12,000 customer reviews on two coffee machines are analyzed for the classification.     

养老机构公共空间需求及影响因素研究——基于Kano模型分析

运用细分后的Kano模型甄别养老机构中老年人对公共空间需求的优先度排序及其影响因素的主次排序。首先通过规范、文献研究与访谈研究获取南京市养老机构中老年群体公共空间需求要素，并将得到的需求项进行层次归属划分。接着测算SI与DI系数量化各项需求对空间满意度的影响，得出公共空间需求优先度排序。最后利用多元线性回归对需求项的影响因素进行分析，探讨“自我”和“家庭”维度下影响因素的主次排序。得出养老机构公共空间的设计应首先满足老年人医疗保健空间层面的需求且空间需求受老年人“自我”维度下失能等级的影响程度最深。通过对需求重要度的排序，可以得出设计的优先满足策略，提升空间的利用效率及老年群体的满意度，为养老机构公共空间的投入侧重点提供理论依据。     

基于Kano模型的共享单车用户的需求重要性研究

目的通过Kano模型得到共享单车用户的需求重要性。方法定性分析前期调查中筛选的用户需求,转化为功能特征信息。通过模型理论得到功能特征所对应的需求重要性矩阵,利用可用性测试进行修正,得到实际开发过程中用户的需求。结论得到了基于Kano模型的共享单车用户的需求重要性矩阵,以及修正后的结果。需求重要性矩阵直接反应了用户的满意度,间接映射了用户需求的重要性。经过用户的可用性测试,提高了需求映射的准确度,为共享单车的开发和升级提供了更有效的建议。     

基于Kano模型的老年人智能手机APP用户界面设计研究

目的为老年人智能手机APP用户界面设计提供有益的方法借鉴。方法采用Kano模型,对APP用户界面设计属性进行分类,区分出设计属性中的魅力属性、期望属性、基本属性、无关属性和逆向属性,结合用户满意度提升指数SII与用户不满意度降低指数DDI,有针对性地对老年人智能手机APP用户界面进行设计,最大程度地提高老年人对智能手机APP用户界面的满意度。结论 Kano模型能很好地运用于老年人智能手机APP用户界面设计上,更有效率地提高老年人对APP用户界面的满意度。