The Experts below are selected from a list of 52464 Experts worldwide ranked by ideXlab platform
Ryuji Kohno - One of the best experts on this subject based on the ideXlab platform.
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Standardization on body area network and a prototype system based on UWB
Journal of Medical Systems, 2011Co-Authors: Huan-bang Li, Ryuji KohnoAbstract:Body area network (BAN) is a promising wireless technology that realizes wireless connectivity among vital signal sensors deployed on human body. Monitoring various vital signals collected through BAN provides an efficient way to lower disease occurrence rate and reduce medical expenditure. Task Group 6 (TG6) within the IEEE 802 Local and Metropolitan Area Network Standards Committee is developing a BAN standard, i.e., IEEE 802.15.6. In which, specifications of three physical layers (PHYs) and a single common medium access control (MAC) are being drafted. The Standardization Process has been continuing for several years in the Task Group 6 (TG6) under Working Group 15 (WG). In this paper, we describe the up-to-date status of IEEE 802.15.6 Standardization. Some main specifications under drafting are presented. Moreover, as an effort of implementing a BAN model, a prototype BAN system based on the high band of ultra-wideband (UWB) is demonstrated.
Tzu-ya Lin - One of the best experts on this subject based on the ideXlab platform.
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Development of Base Train Equivalents to Standardize Trains for Capacity Analysis
Transportation Research Record, 2012Co-Authors: Yung-cheng Lai, Yun-hsuan Liu, Tzu-ya LinAbstract:A conventional railway system usually has multiple train types with various service patterns operating on the same line. Differences in train characteristics lead to varied capacity effects on the system. "Rail line capacity" is commonly defined as the maximum number of trains that can be operated on a section of track with an expected level of service within a given time period. However, a particular unit (trains/hour or trains/day) does not reflect the train type the unit refers to. In this study, a new concept is proposed, namely, the base train equivalent (BTE), along with a Standardization Process to classify different train types in accordance with the particular type defined by the user. This concept is similar to the passenger car equivalent, which converts trucks to passenger car units in classifying highway transportation. A delay-based approach is also developed to determine BTEs on the basis of results obtained from two common capacity evaluation methods: parametric capacity analysis and simul...
Ferruccio Ceriotti - One of the best experts on this subject based on the ideXlab platform.
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the role of external quality assessment schemes in monitoring and improving the Standardization Process
Clinica Chimica Acta, 2014Co-Authors: Ferruccio CeriottiAbstract:This paper examines the evolution of External Quality Assessment Schemes (EQAS), focusing on the need for target values based on reference methods and control material commutability. Although the key role of EQAS in the Standardization Process has been clear from the start, it has never been totally implemented, mainly due to the lack of commutable materials. Costs, the difficulty to assign reference method values, and the non-availability of field methods able to provide results traceable to the reference measurement system have also played an important role. Using commutable materials with target values assigned by reference methods, EQAS can define and verify the uncertainty of test results produced by analytical methods. EQAS may also improve Standardization, proposing rules for the post-analytical phase (uniform units of measurement, description of measurands, rounding off and number of decimal places to report). Only the described EQAS may become a reliable indicator of the status of the Standardization Process. Improvements will only take place if stakeholders (governments and international organizations, scientific societies, manufacturers and specialists in laboratory medicine) act in a coordinated way to take corrective action every time EQAS clearly indicates a suboptimal situation.
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evaluation of the impact of Standardization Process on the quality of serum creatinine determination in italian laboratories
Clinica Chimica Acta, 2014Co-Authors: Anna Carobene, Ferruccio Ceriotti, Ilenia Infusino, Erika Frusciante, Mauro PanteghiniAbstract:Abstract Background Creatinine determination in serum is a key indicator of kidney glomerular function. A reference measurement system for its Standardization is available and virtually all IVD manufacturers have aligned their assays to this system. In this study, we verified the impact of these Standardization efforts on the results of an Italian EQAS involving about 430 laboratories. Method We considered data obtained during 2006, 2010 and 2011 schemes of EQAS Prolarit for control materials with target values assigned by a traceable method (enzymatic assay calibrated against the NIST SRM 967). Results The results showed a good alignment at concentrations ~ 170 μmol/L, with 2011 results — except for one method group — well inside the desirable bias (± 4%). At higher concentrations, whereas the bias was small in 2010, for some groups using alkaline-picrate (AP) methods it became significantly negative in 2011. The performance seems to worsen when measuring physiologic concentrations, where a significant positive bias (up to ~ 20%) is shown by most of the AP-based analytical systems. With few exceptions, no evident improvement in individual assay bias was noted from pre- (2006) to post-Standardization (2011) periods. The enzymatic method groups were the only always presenting an acceptable bias at all creatinine concentrations, also showing the lowest between-laboratory variability. Conclusion Our data seem to indicate that the Standardization efforts are still having effects lower than expected. Even taking into consideration that some of the bias may derive from non commutability problems, most of the current “standardized” AP-based methods, at the lower creatinine concentrations, seem to present accuracy problems. This inaccuracy can adversely impact the estimation of GFR by equations and the evaluation of kidney function in pediatrics.
Kenneth G. Paterson - One of the best experts on this subject based on the ideXlab platform.
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Unpicking PLAID: a cryptographic analysis of an ISO-standards-track authentication protocol
International Journal of Information Security, 2016Co-Authors: Jean Paul Degabriele, Victoria Fehr, Tommaso Gagliardoni, Giorgia Azzurra Marson, Arno Mittelbach, Marc Fischlin, Felix Gunther, Kenneth G. PatersonAbstract:The Protocol for Lightweight Authentication of Identity (PLAID) aims at secure and private authentication between a smart card and a terminal. Originally developed by a unit of the Australian Department of Human Services for physical and logical access control, PLAID has now been standardized as an Australian standard AS-5185-2010 and is currently in the fast-track Standardization Process for ISO/IEC 25185-1. We present a cryptographic evaluation of PLAID. As well as reporting a number of undesirable cryptographic features of the protocol, we show that the privacy properties of PLAID are significantly weaker than claimed: using a variety of techniques, we can fingerprint and then later identify cards. These techniques involve a novel application of standard statistical and data analysis techniques in cryptography. We discuss potential countermeasures to our attacks and comment on our experiences with the Standardization Process of PLAID.
Huan-bang Li - One of the best experts on this subject based on the ideXlab platform.
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Standardization on body area network and a prototype system based on UWB
Journal of Medical Systems, 2011Co-Authors: Huan-bang Li, Ryuji KohnoAbstract:Body area network (BAN) is a promising wireless technology that realizes wireless connectivity among vital signal sensors deployed on human body. Monitoring various vital signals collected through BAN provides an efficient way to lower disease occurrence rate and reduce medical expenditure. Task Group 6 (TG6) within the IEEE 802 Local and Metropolitan Area Network Standards Committee is developing a BAN standard, i.e., IEEE 802.15.6. In which, specifications of three physical layers (PHYs) and a single common medium access control (MAC) are being drafted. The Standardization Process has been continuing for several years in the Task Group 6 (TG6) under Working Group 15 (WG). In this paper, we describe the up-to-date status of IEEE 802.15.6 Standardization. Some main specifications under drafting are presented. Moreover, as an effort of implementing a BAN model, a prototype BAN system based on the high band of ultra-wideband (UWB) is demonstrated.
