Review of Nanocellulose Polymer Composite Characteristics and Challenges

The nanosize cellulose has emerged in the last two decades as an efficient strategy to improve the structural and functional properties of polymer composite. This review focuses to explore the unique mechanical–thermal properties of cellulose-based nanocomposites particularly on the various reinforcing mechanisms of nanocellulose. The promising reinforcing capabilities of nanocellulose mainly lie in their intrinsic chemical natures, aspect ratio, and degree of crystallinity. In this article, the potential factors deteriorating the aspect ratio and crystallinity have been systematically reviewed. Some relevant suggestions/solutions were also widely exploited toward tailoring the generating problems.     

Predicting the determinants of the NFC-enabled mobile credit card acceptance: A neural networks approach

The main aim of this study is to determine the factors influencing the adoption of Near Field Communication (NFC)-enabled mobile credit card, an innovation in contactless payment for the future generation. Constructs from psychological science, trust-based and behavioral control theories were incorporated into the parsimonious TAM. Using empirical data and Structural Equation Modeling-Artificial Neural Networks approach together with multi group analysis, the effects of social influence, personal innovativeness in information technology, trust, perceived financial cost, perceived usefulness and perceived ease of use were examined. The significance of indirect effects was examined using the bias-corrected percentile with two-tailed significance through bootstrapping. Gender, age, experience and usage were introduced as the moderator variables with industry being the control variable in the research model. The scarcity in studies regarding the moderating effects of these variables warranted the needs to further investigate their impacts. The mediating effect of perceived usefulness was examined using the Baron–Kenny’s technique. The findings of this study have provided invaluable theoretical, methodological and managerial implications and will contribute to the decision making process by CEOs, managers, manufacturers and policy makers from the mobile manufacturing industry, businesses and financial institutions, mobile commerce, mobile telecommunication providers, mobile marketers, private or government practitioners and etc.     

NiCuZn铁氧体电磁屏蔽片的尺寸设计与表征

采用固相反应法制备NiCuZn系铁氧体粉料,以此粉料为原料采用流延法制备了不同尺寸(长、宽、厚)的电磁屏蔽片。测试并研究了RFID天线的S11(天线回波损耗)曲线以及可读写距离与紧贴其背后的屏蔽片的厚度及长宽尺寸之间的关系。结果表明,改变屏蔽片的厚度与长宽尺寸以及经过裂片处理,可以调节S11曲线吸收峰中心频率的偏移。吸收峰中心频率偏移的减小可以提高RFID卡可读写距离的恢复比例。     

基于射频识别技术的手机支付实现分析

文章介绍了基于射频识别技术的手机刷卡支付现状、实现原理和解决方案,并根据市场特点和用户使用习惯就各解决方案进行对比分析,提出了解决方案的选择建议。     

Security Threats to Business Information Systems Using NFC Read/Write Mode

Radio Frequency IDentification (RFID) and related technologies such as Near Field Communication (NFC) are becoming essential in industrial contexts thanks to their ability to perform contactless data exchange, either device-to-device or tag-to-device. One of the three main operation modes of NFC, called read/write mode, makes use of the latter type of interaction. It is extensively used in business information systems that make use of NFC tags to provide the end-user with augmented information in one of several available NFC data exchange formats, such as plain text, simple URLs or enriched URLs. Using a wide variety of physical form factors, NFC-compatible tags (wireless transponders) are currently available in many locations with applications going from smart posters, contactless tokens, tap-and-go payments or transport ticketing to automated device configuration, patient identification at hospitals or inventory management within supply chains. Most of these applications handle sensitive processes or data. This paper proposes a complete security threat model for the read/write operation mode of NFC used in Next Generation Industrial IoT (Nx-IIoT) contexts. This model, based on a well-known methodology, STRIDE, allows developers and users to identify NFC applications vulnerabilities or weaknesses, analyze potential threats, propose risk management strategies, and design mitigation mechanisms to mention only some significant examples.     

Organic Diode Rectifiers Based on a High‐Performance Conjugated Polymer for a Near‐Field Energy‐Harvesting Circuit

Organic diodes manufactured on a plastic substrate capable of rectifying a high‐frequency radio‐frequency identification signal (13.56 MHz), with sufficient power to operate an interactive smart tag, are reported. A high‐performance conjugated semiconductor (an indacenodithiophene‐benzothiadiazole copolymer) is combined with a carefully optimized architecture to satisfy the electrical requirements for an organic‐semiconductor‐based logic chip.     

绑定式近场通信3GCOS安全性研究

分析近场通信技术在应用上的安全问题和3GCOS系统的安全属性,针对卡的安全性问题提出解决方案。以3G的USIM卡为载体,采用近场通信技术把非接触的应用绑定在USIM卡上,在USIM卡中共存非接触应用的系统,并通过不同的接口实现方式与外界接触,实现不同的应用功能,制造出集成非接触应用的USIM卡。     

基于NFC的移动商务模型研究

现阶段移动商务面临种种因素的制约，迫切需要引入新型移动商务模型。研究了基于NFC技术的移动商务模型及典型应用流程，比较了NFC与其它几种移动商务无线接入技术的特性。该模型通过NFC技术实现了移动设备上网自动连接、移动交互和移动支付等功能，具有操作简便、成本低和安全性高等优点。移动商务将随着NFC技术应用而得到快速发展。     

移动支付业务和技术发展现状

分析了国内外移动支付业务发展现状,并对移动支付的技术现状进行研究。