12,131 research outputs found
Recommended from our members
Radio frequency identification (RFID) technologies for locating warehouse resources: A conceptual framework
Copyright @ 2012 Information Technology SocietyIn the supply chain, a warehouse is a crucial component for linking all chain parties. It is necessary to track the real time resource location and status to support warehouse operations effectively. Therefore, RFID technology has been adopted to facilitate the collection and sharing of data in a warehouse environment. However, an essential decision should be made on the type of RFID tags the warehouse managers should adopt, because it is very important to implement RFID tags that work in warehouse environment. As a result, the warehouse resources will be easily tracked and accurately located which will improve the visibility of warehouse operations, enhance the productivity and reduce the operation costs of the warehouse. Therefore, it is crucial to evaluate the reading performance of all types of RFID tags in a warehouse environment in order to choose the most appropriate RFID tags which will enhance the operational efficiency of a warehouse. Reading performance of active and passive RFID tags have been evaluated before while, semi-passive RFID tag, which is battery-assisted with greater sensitivity than passive tags and cheaper than active tags, has not been examined yet in a warehouse environment. This research is in- progress research and it seeks to (i) provide a general overview of the existing real-time data management techniques in tracking warehouse resources location, (ii) provide an overall conceptual framework that can help warehouse managers to choose the best RFID technologies for a warehouse environment, (iii) Finally, the paper submits an experiment design for evaluating the reading performance of semi-passive RFID tags in a warehouse environment
Study on Analog Front End of Passive UHF RFID Transponder
In this paper, an overview of passive Ultra High
Frequency (UHF) Radio Frequency Identification (RFID) is presented. This literature review emphasis on the analog front end part of the RFID transponder based on several published papers conducted by previous researchers. A passive UHF RFID transponder chip design was proposed using 0.18 μm standard CMOS process. It is estimated to have power of 1μW and high efficiency that greater than 32%. This design will work in the range of frequency between 900MHz to 960MHz
Tampering in RFID: A Survey on Risks and Defenses
RFID is a well-known pervasive technology, which provides promising opportunities
for the implementation of new services and for the improvement of traditional
ones. However, pervasive environments require strong efforts on all the aspects
of information security. Notably, RFID passive tags are exposed to attacks, since strict
limitations affect the security techniques for this technology. A critical threat for RFIDbased
information systems is represented by data tampering, which corresponds to the
malicious alteration of data recorded in the tag memory. The aim of this paper is to describe
the characteristics and the effects of data tampering in RFID-based information
systems, and to survey the approaches proposed by the research community to protect
against it. The most important recent studies on privacy and security for RFID-based
systems are examined, and the protection given against tampering is evaluated. This
paper provides readers with an exhaustive overview on risks and defenses against data
tampering, highlighting RFID weak spots and open issues
Antennas and Propagation of Implanted RFIDs for Pervasive Healthcare Applications
© 2010 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted
components of this work in other works.This post-acceptance version of the paper is essentially complete, but may differ from the official copy of record, which can be found at the following web location (subscription required to access full paper): http://dx.doi.org/10.1109/JPROC.2010.205101
Recommended from our members
Evaluating the reading performance of semi-passive RFID tags to enhance locating of warehouse resources: An experiment design
Copyright @ 2011 8th European, Mediterranean and Middle Eastern Conference on Information Systems (EMCIS 2011)In the supply chain, a warehouse is a crucial component for linking all chain parties. It is necessary to track the real time resource location and status to support warehouse operations effectively. Therefore, RFID technology has been adopted to facilitate the collection and sharing of data in a warehouse environment. However, an essential decision should be made on the type of RFID tags the warehouse managers should adopt, because it is very important to implement RFID tags that work in warehouse environment. As a result, the warehouse resources will be easily tracked and accurately located which will improve the visibility of warehouse operations, enhance the productivity and reduce the operation costs of the warehouse. Therefore, it is crucial to evaluate the reading performance of all types of RFID tags in a warehouse environment in order to choose the most appropriate RFID tags which will enhance the operational efficiency of a warehouse. Reading performance of active and passive RFID tags have been evaluated before while, semi-passive RFID tag, which is battery-assisted with greater sensitivity than passive tags and cheaper than active tags, has not been examined yet in a warehouse environment. This research is in- progress research and it is aiming to perform tests for evaluating the reading performance of semi-passive RFID apparatus to provide an extensive RFID performance comparison for formulating an efficient RFID solution in warehousing environment
Tahap penguasaan, sikap dan minat pelajar Kolej Kemahiran Tinggi MARA terhadap mata pelajaran Bahasa Inggeris
Kajian ini dilakukan untuk mengenal pasti tahap penguasaan, sikap dan minat pelajar
Kolej Kemahiran Tinggi Mara Sri Gading terhadap Bahasa Inggeris. Kajian yang
dijalankan ini berbentuk deskriptif atau lebih dikenali sebagai kaedah tinjauan. Seramai
325 orang pelajar Diploma in Construction Technology dari Kolej Kemahiran Tinggi
Mara di daerah Batu Pahat telah dipilih sebagai sampel dalam kajian ini. Data yang
diperoleh melalui instrument soal selidik telah dianalisis untuk mendapatkan
pengukuran min, sisihan piawai, dan Pekali Korelasi Pearson untuk melihat hubungan
hasil dapatan data. Manakala, frekuensi dan peratusan digunakan bagi mengukur
penguasaan pelajar. Hasil dapatan kajian menunjukkan bahawa tahap penguasaan
Bahasa Inggeris pelajar adalah berada pada tahap sederhana manakala faktor utama yang
mempengaruhi penguasaan Bahasa Inggeris tersebut adalah minat diikuti oleh sikap.
Hasil dapatan menggunakan pekali Korelasi Pearson juga menunjukkan bahawa terdapat
hubungan yang signifikan antara sikap dengan penguasaan Bahasa Inggeris dan antara
minat dengan penguasaan Bahasa Inggeris. Kajian menunjukkan bahawa semakin positif
sikap dan minat pelajar terhadap pengajaran dan pembelajaran Bahasa Inggeris semakin
tinggi pencapaian mereka. Hasil daripada kajian ini diharapkan dapat membantu pelajar
dalam meningkatkan penguasaan Bahasa Inggeris dengan memupuk sikap positif dalam
diri serta meningkatkan minat mereka terhadap Bahasa Inggeris dengan lebih baik. Oleh
itu, diharap kajian ini dapat memberi panduan kepada pihak-pihak yang terlibat dalam
membuat kajian yang akan datang
A survey on subjecting electronic product code and non-ID objects to IP identification
Over the last decade, both research on the Internet of Things (IoT) and
real-world IoT applications have grown exponentially. The IoT provides us with
smarter cities, intelligent homes, and generally more comfortable lives.
However, the introduction of these devices has led to several new challenges
that must be addressed. One of the critical challenges facing interacting with
IoT devices is to address billions of devices (things) around the world,
including computers, tablets, smartphones, wearable devices, sensors, and
embedded computers, and so on. This article provides a survey on subjecting
Electronic Product Code and non-ID objects to IP identification for IoT
devices, including their advantages and disadvantages thereof. Different
metrics are here proposed and used for evaluating these methods. In particular,
the main methods are evaluated in terms of their: (i) computational overhead,
(ii) scalability, (iii) adaptability, (iv) implementation cost, and (v) whether
applicable to already ID-based objects and presented in tabular format.
Finally, the article proves that this field of research will still be ongoing,
but any new technique must favorably offer the mentioned five evaluative
parameters.Comment: 112 references, 8 figures, 6 tables, Journal of Engineering Reports,
Wiley, 2020 (Open Access
Production of biodiesel from waste cooking oil using ultrasonic tubular reactor
The aim of study is to produce the synthesis of biodiesel from waste cooking oil
(WCO) using ultrasonic tubular reactor at laboratory scale. The experiment was used
to determine the effect of ester contents by reaction time, molar ratio of WCO to
Methanol (MeOH), amount of catalyst, frequency of ultrasonic and ultrasonic output
power using ultrasonic tubular reactor. Based on the optimum process by ultrasonic
tubular reactor, a comparisons study of three different processes (ultrasonic tubular
reactor, conventional ultrasonic cleaner and mechanical stirring) were also
investigated. The optimum results of biodiesel process using ultrasonic tubular
reactor are the reaction time of 5 minute, sodium hydroxide (NaOH) catalyst 1%wt
of WCO, molar ratio WCO to MeOH of 1:6, frequency ultrasonic of 20 KHz and
ultrasonic output power of 650 Watt. The reaction time was reduced to 12-24 times
(minute) compare to mechanical stirring and the ester contents was obtained at
96.54%wt. The ternary phase diagram ultrasonic tubular reactor was to find out the
liquid liquid-equilibrium base on WCO- Fatty Acid Methyl Esters (FAME) -MeOH.
The results show that by increasing the residence time of the whole reactant system
within the two-phase zone is good for the reaction transesterification on ultrasonic
tubular reactor. The semi continuous ultrasonic tubular reactor for biodiesel process
of WCO gave conversion of WCO to FAME of 98%wt with flow rate of 5.56 ml/s.
Meanwhile, the pilot plan of biodiesel facilities using mechanical stirring method
(capacity of 100 kg WCO/batch) was designed and the transfer knowledge about
biodiesel process was a success between the university with industry in Batu Pahat
- …