PURPOSE The purpose of this study is to compare the visibility of microcalcifications of digital breast tomosynthesis (DBT) and full-field digital mammography (FFDM) using breast specimens. MATERIALS AND METHODS Thirty-one specimens' DBT and FFDM were retrospectively reviewed by four readers. RESULTS The image quality of microcalcifications of DBT was rated as superior or equivalent in 71.0...

Since stroke components are the most basic structural featurea of patterns like ch.aracters or linea in im.ages. Prom a tiieui point of bein.g applicable to docum.en.t image understandin.g, it ia necessary to provide a good represen.tation th.at can. express such features, so th,at an interpretation of im.ages can be facilita.ted. Th.is article pre,qen.ta a new tech,n.ique used for ezpressin.g ...

In Internet of things (IoT), radio frequency identification (RFID) plays an important role to help people rapidly obtain information of objects associated with tags. Passive tags are cheap and require no batteries to operate, so they are widely used in RFID applications. Readers, on the other hand, have to provide power to activate passive tags to get their data. However, collision occurs when ...

Purpose – This study seeks to evaluate a selection of second-generation ebook readers in order to determine which devices deliver the best experience for the user, in terms of functionality and overall experience. The technical and physical elements of the devices are also compared. Design/methodology/approach – This paper starts with a brief discussion of the current ebook marketplace, and pre...

A recent development in Wireless Sensor Networks (WSNs) research is to equip sensor nodes with an RFID reader so that they can be used to track animate or in-animate RFID tagged objects. A key problem in such networks, however, is the energy efficiency of current RFID anti-collision protocols. Specifically, the energy cost incurred by a RFID reader to read and monitor n tags. This paper, theref...

Tag collision has a negative impact on the performance of RFID systems. In this paper, we propose an algorithm termed anti-collision protocol based on improved collision detection (ACP-ICD). In this protocol, dual prefixes matching and collision bit detection technique are employed to reduce the number of queries and promptly identify tags. According to the dual prefixes matching method and col...

Radio frequency identification(RFID) system which is a simple form of ubiquitous sensor networks that are used to identify physical objects permits remote, non-line-of-sight, and automatic reading. In RFID system, when a reader sends the ID request command, if there are more than two tags’ responses, their responses will collide on the RF communication link, and thus can not be received by the ...

scientific journals provide a platform for reviewing, publishing and dissemination of the results of new scientific findings and discoveries and cannot be replaced by any other platform. given the important role of scientific journals in dissemination of information, management of such journals takes a high priority. the accurate management of scientific journals takes place only when the diffe...

In RFID systems, the performance of each reader such as interrogation range and tag recognition rate may suffer from interferences from other readers. Since the reader interference can be mitigated by output signal power control, spectral and/or temporal separation among readers, the system performance depends on how to adapt the various reader arbitration metrics such as time, frequency, and o...