1,720,970 research outputs found
A methodological approach to the development of RFID supply chain projects
No full textThe interest in, and adoption of, radio frequency identification (RFID) in the supply chain continues to grow. In the past few years, major initiatives from companies such as Wal-Mart, Metro, and Marks & Spencer have provided muchneeded insight into the potential uses of RFID, thus providing the impetus for other companies to investigate RFID. Consequently, reports of ‘pilot’ projects by many different companies are on the increase. However, the development of an RFID project is a complex task, requiring the involvement of many different parties with a variety of skill sets. Successfully managing such complex projects requires a clear definition of steps and activities. Unfortunately, this issue is only partially embraced in literature. Thus the purpose of this paper is to provide a methodology to help companies in developing and managing an RFID project. The framework provided in this paper is grounded on available literature and from the authors’ personal experiences in managing several projects through their RFID laboratories
Assessing the performances of RFID UHF and HF dual-frequency apparel tags
No full textThe paper aims to benchmark the performances of dual-frequency inlays, operating in the UHF and HF bands, when deployed in the apparel logistics and end user retail processes. The developed testing protocol makes it possible to evaluate the performances of RFID devices in simulated supply chain and end user-oriented processes. It has been designed considering the need for identification of the supply chain and the end users, who can take advantage of the adoption of NFC technology. We applied the testing procedure to RFID inlays equipped with an innovative integrated circuit (IC) and two antennas, capable of managing both EPC communication in the UHF band and NFC communication in the HF band with smart devices. The performances of the inlays were compared to those of standard tags commonly used in the EPC and NFC fields. We measured and compared the read rate, accuracy and read time when testing EPC capabilities and the read/write throughput, time and distance when measuring NFC functionalities. By simulating a real-world environment, the test results provide a direct insight into the performances that can be expected from different dual-frequency RFID inlays. This information is useful for IT and logistics managers, who can better understand how these innovative tags perform and which would be the best choice for new RFID applications
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Intellectual structure and subject themes in information systems research : a journal cocitation study
Full text linkInformation Systems (IS) is a discipline in which research and practice are closely intertwined. IS is also closely related to and overlapping several other disciplines, including Information Science. Thus, IS provides an excellent case for examining the interplay of research and practice in a rapidly changing discipline. We explore the intellectual structure and subject themes in Information Systems (IS) research for 1990 to 1999 through the identification and analysis of the field's core journal literature. A core journal list of 100 titles was created and examined with journal cocitation analysis (JSA). JSA demonstrates that IS is a coherent discipline with research ranging from technology-oriented software and hardware to the application of IS in business and organizations. Journals are grouped into seven subject clusters: computer science, computer networking, computer engineering, information science, software engineering, human-computer
interaction, and management information systems. Information Science journals occupy a bridging position between technically oriented and application-focused clusters. ASIST publications, JASIST, ARIST, and PASIS, figure prominently in the Information Science cluster
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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