نتایج جستجو برای: osl

تعداد نتایج: 704  

2009
A. J. J. Bos J. Wallinga

We present mathematical descriptions of optically stimulated luminescence OSL signals under linearly, hyperbolically, exponentially, and reciprocally increasing stimulation intensity for a one-trap one-recombination-center model assuming charge transfer governed by first-order kinetics. Depending on the stimulation mode, the OSL signal can be monotonically increasing, monotonically decreasing, ...

2007
Manuel Hilty Alexander Pretschner David A. Basin Christian Schaefer Thomas Walter

We present the Obligation Specification Language (OSL), a policy language for distributed usage control. OSL supports the formalization of a wide range of usage control requirements. We also present translations between OSL and two rights expression languages (RELs) from the DRM area. These translations make it possible to use DRM mechanisms to enforce OSL policies. Furthermore, the translation...

Journal: :IJICTHD 2009
Lorna Uden Nian-Shing Chen Chun-Wang Wei Jui-Chu Fan

abstraCt The implementation of Online Synchronous Learning (OSL) poses many challenges to existing instruction technology theory because of the complexity of the digital age. Although many studies have been carried out for an OSL, there is little evidence of OSL for teaching language learning. This is especially so when it involves multiple cultural perspectives. This chapter describes the impl...

2014
Robert Baier Elza Farkhi Asen L. Dontchev Vladimir M. Veliov

We introduce one-sided Lipschitz (OSL) conditions of set-valued maps with respect to given set differences. The existence of selections of such maps that pass through any point of their graphs and inherit uniformly their OSL constants is studied. We show that the OSL property of a convex-valued set-valued map with respect to the Demyanov difference with a given constant is characterized by the ...

2014
S. Sholom

The OSL dosimetry technique with teeth has been validated against the EPR dosimetry technique through a measurement comparison performed on the same teeth. The OSL reconstructed doses were found to be in agreement with corresponding EPR doses. Minimum measurable doses for the OSL technique were estimated to be in the range 0.9e1.5 Gy for measurements made within 24 h post-exposure if OSL signal...

Journal: :Medical physics 2008
A Viamonte L A R da Rosa L A Buckley A Cherpak J E Cygler

A commercial optically stimulated luminescence (OSL) system developed for radiation protection dosimetry by Landauer, Inc., the InLight microStar reader, was tested for dosimetry procedures in radiotherapy. The system uses carbon-doped aluminum oxide, Al2O3:C, as a radiation detector material. Using this OSL system, a percent depth dose curve for 60Co gamma radiation was measured in solid water...

2011
Noman Javed Frédéric Loulergue

Orléans Skeleton Library (OSL) is a library of parallel algorithmic skeletons in C++ on top of MPI. It provides a structured approach towards parallel programming. Skeletons in OSL are based on the bulk synchronous parallelism model. In this paper we present formal semantics of OSL: a programming model and its properties proved with the Coq assistant.

2008
Maria Christiansson Christian Bernhardsson Christopher Rääf Sören Mattsson

This study has investigated the optically stimulated luminescence (OSL) of household salt and chemically pure NaCl after exposure in different radiation environments. The response relative to thermoluminescent dosimetry using LiF has been investigated to determine if OSL in NaCl can be considered as an alternative to measurements of thermoluminescence in LiF. A selection of staff members at the...

Journal: :Scientific reports 2016
Luiz C Oliveira Eduardo G Yukihara Oswaldo Baffa

The goal of this work was to investigate the relevant dosimetric and luminescent properties of MgO:Li3%,Ce0.03%,Sm0.03%, a newly-developed, high sensitivity Optically Stimulated Luminescence (OSL) material of low effective atomic number (Zeff = 10.8) and potential interest for medical and personal dosimetry. We characterized the thermoluminescence (TL), OSL, radioluminescence (RL), and OSL emis...

2015
Maria Inês Teixeira V. E. Caldas

The possibility of using Brazilian stones in gamma high-dose dosimetry was investigated at IPEN using the optically stimulated luminescence (OSL) technique. Agate samples were studied in relation to their OSL dosimetric properties, in this work. The samples were irradiated at a Gamma-Cell system (Co). The calibration curves show a sublinear behavior between 50 Gy and 300 kGy, and the lower dete...

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