Narrow Results

With the development of inkjet-/3D-/4D-printing additive manufacturing technologies, flexible 3D substrate with complex structures can be patterned with dielectric, conductive and semi-conductive materials to realize novel RF designs. This paper provides a review of state-of-the-art additively manufactured passive RF devices including antennas and frequency selective surfaces (FSS), couplers, where origami-inspired structure enables unprecedented capabilities of on-demand continuous frequency tunability and deployability. This paper also discusses additively manufactured active RF modules and systems such as inkjet printed RF energy harvester system with high sensitivity and efficiency for Internet of Things (IoT), smart cities and wireless sensor networks (WSN) applications, inkjet-printed RF front ends, and inkjet-printed mm-wave backscatter modules.

The rapid development and deployment of 5G/mm-Wave technologies for communication, sensing and energy harvesting applications have been on the rise. Consequently, the need for low-cost, scalable, agile and compact RF modules has become more prominent than ever. This paper presents a review of recent efforts in utilizing additive manufacturing techniques such as inkjet printing to sustainably accelerate the massive deployment of 5G/mm-Wave. First, a novel flexible and massively scalable multiple-input, multiple-output (MIMO) tile-based phased array enabled by additively manufactured microstrip-to-microstrip transitions is presented. Next, a novel Rotman-Based harmonic mmID tag for Ultra-Long-Range localization is presented. Finally, low-power, low-cost mm-Wave backscattering modules for localization and orientation sensing are demonstrated.

This review encompasses additive manufacturing techniques for crafting 5G electronics, showcasing how these methods innovate device creation with novel examples. A wearable phased array device on commonplace 3D printed material is described, with integrated microfluidic cooling channels used for thermal regulation of integrated circuit bulk components. Mechanical and electrical tunability are exemplified in an origamiinspired phased array structure. A 3D printed IoT cube structure shows the flexibility in the number of geometries additively manufactured 5G devices can adhere to. Finally, integrating 3D optical lenses with 5G electronics is shown.

Nowadays, Radio Frequency Identification (RFID) systems are widely used in commercial applications such as warehouse management and automation control to identify the tagged goods or materials. When there existed multiple tags in the interrogation field of a transponder, the arbitration algorithm for RFID system is used to arbitrate all the tags to avoid the collision problem. A splitting algorithm which is called Binary Search Tree is well-known for multi-tags arbitration. In this paper, a Split-Merge Tree Algorithm is developed to reduce the cost of time and power on avoiding collision. Then, its performance is compared with Binary Search Tree according to time and power, the total time slots and tag replies needed for successfully arbitrating an RFID device, during the arbitration process. The results show that our model can reduce the time and power consumed to achieve a better performance.

This is where the English abstract should be placed. It should consist of one paragraph giving a concise summary of the material in the article below. Replace the title, authors, and addresses with your own title, authors, and addresses. You may have as many authors and addresses as you like. It is preferable not to use footnotes in the abstract or the title; the acknowledgments of funding bodies etc. are to be placed in a separate section at the end of the text.

A technology architecture model on truck automatic identification is presented in this paper to realize in-transit services demanded by intelligent transportation system(ITS) and logistics system, for example, Electronic Toll Collection(ETC), traffic information provision, telecommunication, navigation, items automatic identification, items status monitoring and theft avoidance. That model is based on a variety of ISO standards including Dedicated Short-Rang Communication (DSRC), Communication Air-interface Long and Medium range (CALM), Radio Frequency Identification (RFID) and Global Position System (GPS). This paper also covers the components and fixing of on-board AIT equipment. Furthermore, operational process of truck transportation is analyzed to meet the requirements of both ITS and logistics system.

Radio frequency identification (RFID) and wireless sensor networks (WSN) are two important wireless technologies that have a wide variety of applications and provide limitless future potentials. RFID facilitates detection and identification of objects that are not easily detectable or distinguishable by using current sensor technologies. However, it does not provide information about the condition of the objects it detects. Sensors, on the other hand, provide information about the condition of the objects as well as the environment. Hence, integration of these technologies will expand their overall functionality and capacity. This chapter first presents a brief introduction on RFID and then investigates recent research works, new patents, academic products and applications that integrate RFID with sensor networks. Four types of integration are discussed: (1) integrating tags with sensors; (2) integrating tags with wireless sensor nodes and wireless devices; (3) integrating readers with wireless sensor nodes and wireless devices; and (4) mix of RFID and wireless sensor networks. New challenges and future works are discussed at the end.

A main challenge in the field of service robotics is the navigation of robots in human everyday environments. Supermarkets, which are exemplary chosen here, pose a challenging scenario because they often have a cluttered character. They are full of dynamic objects. Especially the presence of large numbers of people is a special challenge to cope with. It can often be difficult to map the locality because of a frequently changing environment. Therefore a broad approach is needed to cover three main tasks: the reactive local navigation, the interaction with dynamic objects and a the global navigation and task planning. A three layered navigation concept was developed where each of these fields is dealt with in a dedicated layer. This paper describes the top layer with a semantic navigation using RFID tags as landmarks. It is based on a topological map with semantic attributes. Barriers of RFID tags are used to discriminate the environment into topological areas. Combining a topological navigation with a behavior-based control makes the navigation independent of a global metrical map. This paper is associated with the CommRob project.

Cultural variations across countries are considered a major factor affecting customers' readiness to adopt, use, and evaluate technology. Relevant contributions from marketing studies, computer science, and international business are integrated into the literature of cross-cultural management and technology acceptance, and a conceptual model is developed. Drawing on a broader research project on radio frequency identification (RFID) aimed at supporting intelligent business networking and innovative customer services, the development of the framework is informed by the authors' work in the preparation of an RFID-based application at several established grocery retailers for short-life products in Ireland and in Greece. From the findings of our exploratory study, it emerges that low uncertainty avoidance, low institutional collectivism, high in-group collectivism, high gender egalitarianism, and low humane orientation are conducive to greater customers' acceptance of new service technologies. Managerial implications and directions for future research are discussed.

In this paper, the quality and safety of aquatic products in our country are analyzed at first. Taking sea cucumber as the research object, this paper describes the whole process of the sea cucumber from the breeding to the sale. By introducing Radio Frequency Identification (RFID), Quick Response Code (QR Code), Global Positioning System (GPS) and other Internet of things technology, this system put forward a kind of product quality traceability system based on the Internet of things. It takes the water supply chain as the angle of view and combines with the different characteristics of each stage to realize the whole process dynamic tracing of the sea cucumber.

The machining quality controlling of the aeronautical thin-walled components is a problem hard and urgent to be solved in aeronautical industries. This problem seriously hinders the development of the aviation industry. Measuring and monitoring the condition of the cutting tool is an effective way to achieve good surface roughness and dimensional accuracy of the parts, as well as providing processing parameters for self-adapting machining. This article presents a novel smart milling tool based on RFID for real-time measurement and transmission of tool condition in precision milling operations. Contactless transmission channel is modeled by the Loos equivalent model and mutual inductance model. The effects that operational frequency, coupling size and different primary and secondary compensation topologies have on system transmission performance have been analyzed and validated.

The inventory flow information in supply chain would affect inventory management. However, current inventory flow information still presents low visibility. Analytic Hierarchy Process (AHP) is selected in this study for evaluating logistics-related problems and the core problems explored with AHP are regarded as the key items in the research. A monitoring system with real-time and correct inventory and vehicle location is established in this study, in which the system software is designed and developed based on LabVIEW, and the information acquired with Radio Frequency Identification (RFID) and Global Positioning System (GPS) are used for satisfying the demands of users and managers for under-standing the detailed information of objects.

With the development of science and technology, wireless location is becoming more and more important in daily life. Unlike prior positioning algorithms, we propose a distance-scale mapping positioning algorithm assisted by the Received Signal Strength Indicator (RSSI) to implement the Real-Time Location (RTL) by mobile Radio Frequency Identification (RFID) tags. Based on the distance RSSI location algorithm estimates, it combines the Circle Positioning Model (CPM) and the reader number for each distance to choose the intersection, and as a result it can get the mobile RFID tag's monitor location. Experimental results show that without adding hardware, the algorithm has better real-time and higher accuracy than RSSI Location Algorithm.

The explosive increasing books puzzle the librarians in managing, sorting, circulating and inventing them efficiently and accurately. The widely used bar codes technology in the libraries is unable to meet the requirements. Considering the advantages of RFID technology such as contactless penetrating tag identification, large information capacity of tag, The paper developed a library management system using the RFID technology under the Qt Creator integrated development environment, which uses RFID tags and readers to realize the library information inputting, lending and return and library information management, etc.

The most fundamental and important requirement of the tour guide in the tour process is to ensure the safety of tourists. In this paper, a portable guide management system is designed based on RFID technology, the Android software and blue-tooth communication technology. Through this system, the guide can get real-time information if some tourists are left behind, and send text message or dial to those tourists who are left behind immediately. The system reduces the roll-calling time on the tourists, improves the tour guide work efficiency and service quality.

This paper studies the impact factors and solutions for improving management performance of supply chain inventory control system based on the principles of system dynamics and artificial simulation from the perspective of dynamic complexity. This paper also takes the impact of RFID on the supply chain management into consideration under the context of the Internet of things. We think that “System Structure”, “Control Policy” and “Control Parameters” are three kinds of important factors to affect the performance of supply chain inventory management; and presents the “structural solutions” of adjusting the ordering cycle to match lead time, the “strategic solutions” based on taking the order bill amounts and the goods in transit into account, and the “operational solutions” based on parameter control. Then this paper probes the ways of their influence on the management performance under the condition of centralized control and decentralized control. Results show that the effectiveness of these three solutions on management performance is increasing under the condition of centralized control and is decreasing under the condition of decentralized control in turn. The results further show that the system thinking is important and effective to deal with the dynamic complex systems.

This paper focuses on the impact of radio-frequency identification (RFID) technology adoption on supply chain coordination. We consider a three-tier supply chain consisting of one supplier, one transporter and one retailer with centralized and decentralized decision-making. Considering the factors of RFID tag cost and product freshness, two scenarios — with RFID and without RFID — are analyzed. In the decentralized supply chain, a revenue-sharing contract is established to explore each partner’s decisions on ordering quantity, wholesale price and profits. The results show that (1) the tag cost of RFID has different effects on the pricing decisions, ordering quantity and profit of an FPSC, and if the amount of transportation time compression increases, the range of the tag cost’s boundary value will be wider when adopting RFID technology; (2) when the members of an FPSC choose the optimal wholesale price, optimal initial fare and appropriate revenue-sharing coefficient, the FPSC can achieve a win–win result; and (3) the amount of transportation time compression has a positive correlation with the expected profit of the supplier, transporter and retailer but has a negative correlation with loss of the product.