教学课程资源库 更多>>

关键词： Supply chain   Resilience   Agility   Vulnerability   Uncertainty   IT   AI   Digital twin   IoT   Big data   ICT   RFID   Blockchain and information system  

摘要： Purpose The purpose of this study is to explore the opportunities provided by information technologies (IT) to improve supply chain processes. It aims to conduct a systematic literature review (SLR) to identify research areas that require further exploration to leverage IT and enhance supply chain performance. Design/methodology/approach This study employs a systematic literature review methodology to analyse a set of 177 publications, including journal papers, conference papers, periodicals, theses, and books published between 2013 and 2023. Thematic synthesis was chosen as the most appropriate approach to amalgamate the findings obtained from the systematic literature review conducted in the study. This method involves interpreting thematic information and facilitating the development of a comprehensive understanding of the literature being reviewed. Findings The literature review reveals that certain information technologies, such as the Internet of Things (IoT), Big Data, artificial intelligence (AI), Blockchain, information and communications technology (ICT) and information sharing, offer significant potential for improving supply chain processes. However, the application of these technologies in the field of supply chain is currently under-researched. The findings highlight the need for further exploration of these technologies and their impact on supply chain redesign and enhancement. Originality/value This study contributes to the existing body of knowledge by providing a systematic overview of the potential benefits of IT in the context of supply chains. It emphasises the under-researched nature of specific technologies and their potential to support organisations in improving their supply chain processes. The originality of this study lies in its comprehensive analysis of relevant literature and its identification of research gaps that need to be addressed in future studies.

关键词： Mixed reality   Extended reality   Game   Gamification   Research through design   End user development   RFID  

摘要： Mixed reality (MR) games refer to games that integrate physical entities with digitally mediated contents. Currently, it entails game creators to integrate heterogeneous virtual and physical components, which is often time-consuming and labor-intensive, without the support of a coherent technology stack. The underlying technodiversity manifested by the research corpus suggests a complicated, multi-dimensional design space that goes beyond merely technical concerns. In this research, we adopted a research-through-design approach and proposed an MR game technology stack that facilitates flexible, low-code game development. As design grounding, we first surveyed 34 state-of-the-art studies, and results were synergized into three different spectra of technological affordances, respectively activity range, user interface and feedback control, to inform our next design process. We then went through an iterative prototyping phase and implemented an MR game development toolset. A co-design workshop was conducted, where we invited 15 participants to try the prototype tools and co-ideate the potential use scenarios for the proposed technology stack. First-hand user feedback was collected via questionnaires and semi-structured interviews. As a result, four conceptual game designs with three major design implications were generated, which conjointly reflect a broader understanding on MR gameful experience and contribute fresh insights to this emerging research domain.

摘要： This article describes the development of a queuing system based on tax payments for the Randubango Village Hall. The aim is to improve the efficiency and convenience of the queuing process by allowing residents who have paid their taxes to attach their E-KTP to a queue machine, rather than having to manually queue and show proof of payment. The method used is an experimental prototype using RFID MFRD22 technology and Nodemcu to send UID to a Google Sheet database, and Arduino Uno as a thermal printer controller. The results show that the system successfully prints queue tickets for registered E-KTPs, while unregistered E-KTPs cannot print queue tickets and must be registered first. However, the reading distance of MFRC522 is limited to less than 1.5 cm, and WiFi transmitting devices can affect internet connections. The implication is that the queuing system has the potential to improve the efficiency and convenience of community services, but further improvements are needed to address technical limitations.

关键词： OTFT   Single gate   Dual gate   RFID   DNA sensor  

摘要： Current research focuses on developing inexpensive, adaptable, portable, wearable electronic devices. Organic transistor-based devices play a crucial contribution in these developments. These devices have a low-temperature fabrication process, making it possible to use an extensive range of flexible substrates like cloth, paper, foil, fiber, and plastic. The article discusses a variety of materials used for different layers of the Organic Thin Film Transistor (OTFT). Also highlighting the structural variation, with their performance metrics, which include current, threshold voltage (VT), mobility (mu), subthreshold slope (SS), and current ratio. Additionally, it presents an insight into the operating principle of OTFT to comprehend the conduction process better. A study is carried out for dielectric materials, including organic, inorganic, Self-assembled monolayer (SAM), hybrid, and nanocomposite, along with their benefits and drawbacks. The paper further discusses some crucial uses of organic transistors, such as low-cost Radio frequency identification tag (RFID), organic memory having the quality of three memory types, organic inverters, Deoxyribonucleic Acid (DNA) sensors, Active matrix displays, Gas sensors, Pressure sensors and Chemical sensors adopted two kinds of chemical detection methods from human body and environment. Finally, the article discusses the issues and future prospects of OTFT.

摘要： Food and Public Distribution department, Government of India, National Food Security issues a ration card to all eligible households comes under economically weaker section to get the daily need groceries like rice, sugar etc. at very subsidized rate. It also serves as an official identification system. Due to this conventional system of ration distribution, lot of misusage and corruption may take place and hence to address this, a two level authentication based smart ration card system using Radio Frequency Identification (RFID) and IoT is developed. At ration store, for user authentication, smart card will be scanned over RFID reader, through microcontroller connected to server’s database. To add second level security, One Time Password (OTP) will be sent to registered mobile number and is to be entered in the system. If OTP matches, user founds to be authentic and monthly ration quota of that user will be displayed and will be dole out. The database will be updated once the transaction is successful. Through this mechanism, government can monitor or observe the delivered ration and rationer also can check his status in the portal.

摘要： Children safety is a concern for every parent. When the child start going to school for the first time and when he/she is small to understand the situation to act upon it, the mechanism is required to track the same. The framework proposed in this paper is evolved after studying many incidents related to the children safety during travelling to and from school. Human oversight or supervisor’s absence may lead to a heartbreaking incident. Manual system may overlook some threats associated. Proposed work in the paper is a system to report the child boarding and drop with the time stamp and location to the parents and the school authority daily. The system helps the concerned parents and school authorities to take immediate action against any mishap or unfortunate incident. The proposed system consists of RFID card, RFID reader, Arduino Controller enabled with GPS, GSM, and clock. The proposed system in the paper provides an economic solution for the above-mentioned problem and that can be affordable to all economic classes easily. This work has taken place for the school students Jaipur city, Rajasthan stat, India.

关键词： Deep learning   chipless RFID   precise RFID tag detection   DL architecture  

摘要： Due to their high price, RFID tags are not yet widely used in applications for monitoring, tracing, and information inscribing, such as manufacturing lines, supply chains, and inventory management. The currently utilized barcode-like tracing techniques lack security, experience data limitation, are semi-automated, and are prone to external damage. Chipless RFID technology is a potential replacement, able to overcome shortcomings. However, due to the uncertainty created by the absence of a communication antenna and microchip, the detection of chipless RFID tags has a 2-5% detection error rate. The recent advancement in spatial chipless RFID technology has opened up a plethora of opportunities to use deep learning, which is becoming increasingly popular, to detect chipless RFID tags from a 2D virtual image created from the backscattered signal. In this study, we presented a comprehensive and exhaustive investigation of several deep learning techniques to improve the detection capability of deep learning-based chipless RFID tag detection. Our proposed fine-tuning methods yielded better mathematical metrics on the state-of-the-art on its original setup. A confusion matrix used to measure error rates on unseen data shows that the improved deep learning architecture we introduced works at roughly 99.99% accuracy.

关键词： MIMO antenna   Path loss   Tag power sensitivity   RFID tag antenna   Sub-6 GHz  

摘要： In this paper, the path loss performance of an eight-port Multiple-In-Multiple-Out (MIMO) antenna consisting of four circular slots radiator-based antenna elements is investigated in 3.5-3.75 GHz range for utilisation as an RFID tag and reader antenna. First, the S-parameters between the ports of two proposed MIMO antennas are measured in four channels of spatial diversity;one direct line-of-sight (LOS) and three indirect LOS in an anechoic chamber, each for the horizontal and vertical polarisation schemes at two distances, 5 and 25 cm, and the path losses between the ports of MIMO antennas are evaluated. Then, the path losses between the same MIMO antennas are obtained in a laboratory environment, which are higher by about 5-10 dB than those in the anechoic chamber and so, these losses are more dependent on the antenna position and nearby objects. The tag power sensitivity and the tag (read) range for the presented MIMO antenna are found to be more power level dependent than frequency dependent. The reported results confirm the performance of proposed MIMO antennas for RFID applications in addition to 5 G communications.

关键词： Radio frequency identification   anti-collision   tags grouping   dynamic framed slotted Aloha  

摘要： When the radio frequency identification(RFID)system inventories multiple tags,the recognition rate will be seriously affected due to *** on the existing dynamic frame slotted Aloha(DFSA)algorithm,a sub-frame observation and cyclic redundancy check(CRC)grouping combined dynamic framed slotted Aloha(SUBF-CGDFSA)algorithm is *** algorithm combines the precise estimation method of the quantity of large-scale tags,the large-scale tags grouping mechanism based on CRC pseudo-randomcharacteristics,and the Aloha anti-collision optimization mechanism based on sub-frame *** grouping tags and sequentially identifying themwithin subframes,it accurately estimates the number of remaining tags and optimizes frame length accordingly to improve efficiency in large-scale RFID *** outcomes demonstrate that this proposed algorithmcan effectively break through the system throughput bottleneck of 36.8%,which is up to 30%higher than the existing DFSA standard scheme,and has more significant advantages,which is suitable for application in largescale RFID tags scenarios.

关键词： Sensors   Radiofrequency identification   Couplings   RFID tags   Antennas   Temperature sensors   Backscatter   Backscatter coupling   differential measurement   radio frequency identification (RFID) sensor   received signal strength indicator (RSSI)   simultaneous power and data transfer (SPDT)  

摘要： Enhanced by the simultaneous wireless power and data transfer, the radio frequency identification (RFID) techniques create new chances for the Internet of Things (IoT), which is used to integrate sensitive elements for different sensing purposes. However, the sensor-augmented RFID tags and chip-less RFIDs suffer from the limited power supply and the impact of ambient environments, respectively. This investigation explores the commercial RFID-based sensing techniques to obtain the physical parameters of the RFID-labeled objects with differential sensing via the backscatter coupling between the reader-tag antennas. The main contributions of this investigation include: 1) analysis of RFID backscatter coupling and the establishment of the relational model of measured parameters, antenna parameters, and RFID received signal strength indicator (RSSI)/phase;2) simulation studies of the electromagnetic coupling between the RFID tag and material under test (MUT) to reveal the relationship of the MUT parameters with antenna impedance;3) design of an RFID tags differential sensing scheme to compensate for the environment impact using a shielding layer;and 4) determination of sensitive frequencies with principal component analysis (PCA) and measurand reconstruction method with Levenberg-Marquardt (LM) curve fitting. Finally, the experimental studies are conducted with NaCl solution sensing. The results show that the presented techniques can effectively obtain the change in the solution's concentration, which demonstrates the effectiveness of the proposed techniques.