Design considerations of RFID based baggage handling system, a literature review

, Harjanto Prabowo, Agung Trisetyarso, Meyliana, Achmad Nizar Hidayanto 2nd International Conference on Information Management and Technology, ICIMTech 2017 Yogyakarta; Indonesia 15 - 17 November 2017 978-153862930-

FRAMEWORK FOR IMPROVING PERFORMANCE OF PROTOCOLS FOR READING RADIO FREQUENCY IDENTIFICATION TAGS

Radio-frequency Identification (RFID) is a highly sought-after wireless technology used to track and manage inventory in the supply chain industry. It has varied applications ranging from automated toll collection and security access management to supply chain logistics. Miniaturization and low tag costs of RFID tags have lead to item-level tagging, where not just the pallet holding products is tagged but each product inside has a tag attached to it. Item-level tagging of goods improves the accuracy of the supply chain but it significantly increases the number of tags that an RFID reader must identify and track. Faster identification is crucial to cutting cost and improving efficiency. Existing RFID protocols were designed to primarily handle static scenarios with both RFID tags and readers not being in motion. This research addresses the problem of inventory tracking within a warehouse in multitude of scenarios that involves mobile tags, multiple readers and high density environments. Mobility models are presented and frameworks are developed for the following scenarios: a) mobile tags on a conveyor belt with multiple fixed readers; b) mobile reader in a warehouse with stationary tags in shelves; and c) high density tag population with Near-Field (NF) communication. The proposed frameworks use information sharing among readers to facilitate protocol state handoff and segregation of tags into virtual zones to improve tag reading rates in mobile tag and mobile reader scenarios respectively. Further, a tag’s ability to listen to its Near-Field neighboring tags transmissions is exploited to assist the reader in resolving collisions and hence enhancing throughput. The frameworks discussed in this research are mathematically modeled with a probabilistic analysis of protocols employed in conjunction with framework. With an increased number of tags to be identified, mathematically understanding the performance of the protocol in these large-scale RFID systems becomes essential. Typically, this analysis is performed using Markov-chain models. However, these analyses suffer from the common state-space explosion problem. Hence, it is essential to come up with a scalable analysis, whose computation model is insensitive to the number of tags. The following research analyzes the performance of tag identification protocols in highly dense tag scenarios, and proposes an empirical formula to estimate the approximate time required to read all the tags in a readers range without requiring protocol execution

Proceedings of the European Conference on Agricultural Engineering AgEng2021

This proceedings book results from the AgEng2021 Agricultural Engineering Conference under auspices of the European Society of Agricultural Engineers, held in an online format based on the University of Évora, Portugal, from 4 to 8 July 2021. This book contains the full papers of a selection of abstracts that were the base for the oral presentations and posters presented at the conference. Presentations were distributed in eleven thematic areas: Artificial Intelligence, data processing and management; Automation, robotics and sensor technology; Circular Economy; Education and Rural development; Energy and bioenergy; Integrated and sustainable Farming systems; New application technologies and mechanisation; Post-harvest technologies; Smart farming / Precision agriculture; Soil, land and water engineering; Sustainable production in Farm buildings

Plumbing the depths: stories, e-portfolios; pedagogy, ownership

Over the course of this academic year, a colleague and I implemented an eportfolio pilot with 82 students aged 17 to 50 on a team-taught 30-credit Level 1 core course on behalf of the University of Greenwich. The students are studying for a degree in Education Studies and come from a wide range of backgrounds. The module comprises elements of PDP interwoven with lectures on contemporary education issues and was originally designed as a paper-based course. The pilot navigated the PebblePad system as part of a wider trial of a number of different systems by the university. This paper presents the results of research combining mixed methodologies mainly allied to the interpretive paradigm but incorporating elements of critical theory. The research evaluates the differing experiences of students and lecturers using this e-portfolio system for learning, teaching, reflection and assessment. Methods used include initial and final student reflections, surveys, interviews and critical analysis including the narrative ‘soundings’ of sample experiences from student blogs and visual analysis of some student portfolios. We used the PebblePad as a mini VLE, uploading course documents and lecture presentations and sending messages as well as creating online gateways for formative and summative assessment submission. It was accessed externally to the university systems. In a scaffolded process, students constructed and submitted blogs and e-portfolios composed of a number of assets. The process of interactions with an eportfolio system has raised substantial and complex challenges for course design and learning outcomes relating to pedagogy and assessment as well as challenges of implementation, resistance to change and around concepts of ownership. As a commentary on academic practice, an element of personal reflection on the project and the research is included in the form of a dialogic interlocution with these narratives, raising questions about the way in which we might use e-portfolios in Higher Education and considering how we evaluate online learning. As a process of evaluation, the research does not offer hypotheses or answers as such but aims to create space for different views by raising complex questions and challenges for consideration in the process of contextualising and making sense of the users’ different experiences, of plumbing the depths. Drawing on diverse genres and media the paper presents the results of the research and samples some of the work produced