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[en] It was shown during the conference that compact accelerator-based neutron sources (CANS) are a viable approach which can potentially offer performances on par with medium power research reactors and spallation sources in the field of neutron scattering. It was shown that simulations suggest high end-CANS can be competitive for SANS (small angle neutron scattering), diffraction or TOF Spectroscopy. This was particularly well illustrated by texture measurements performed at various facilities. While the collection time was of course much longer, CANS offer a much easier and fast access for industrialists and scientists at a fraction of the cost of large scale facilities
[en] Validated analytical methods must be used for accurate and precise determination of identity, purity, strength, and quality of any pharmaceutical dose intended for human administration. Consequently, all analytical methods must be validated per USP <1225> and the ICH Q2R1 guidelines to meet the cGMP requirements of the FDA and EMA. A reversed-phase high-performance liquid chromatography analytical method, with <10 min run time, was developed for the analysis of [11C]nicotine. The analytical method was found to be specific, accurate, suitable, robust, precise, and linear for [11C]nicotine, nicotine, and (±) nornicotine in the concentration ranges studied. The LOD and LOQ values were also established. (author)
[en] Goals: – Develop the fundamental scientific basis to understand, predict, and measure changes in materials and systems, structures and components (SSCs) as they age in environments; – Apply this knowledge to develop and demonstrate methods and technologies that support safe and economical long-term operation of existing reactors; – Research new technologies that enhance plant performance, economics, and safety.
[en] The SIP (Session Initiation Protocol) is an application and presentation layer signaling protocol used for initiating, continuing and terminating multimedia session for the end user. It gains much attention of the researchers because it is exposed to several threats and noticed challenging vulnerabilities from time to time. Consequently, the security of SIP is a crucial task and many efforts have been made by different researchers and tried to divert the attention towards its solution. But still, no one claims with conviction about a foolproof secure mechanism for SIP. As users extensively use SIP services, the mutual authentication and key agreement among the participants is an important issue. So, robust authentication and key agreement scheme are mandatory for enhancing security, legitimacy and better complexities. Therefore, we present an improved three-factor authentication scheme that caters all the weakness and known attacks in Mishra et al. scheme. The proposed scheme not only guarantees for security but performance can also be made lightweight. As performance and security contradict each other, the change in one inversely affects the other. The proposed scheme has been analyzed both formally using BAN (Burrows-Abadi-Needham) logic and ProVerif1.93 software verification toolkit, and informally using assumptions which show a delicate balance of security with performance. (author)
[en] In recent times, the globalization of markets due to the improvement of utilization of resources has significant impact on the manufacturing systems. International competition forced companies to establish efficient and effective production facilities that provide best possible outcome in terms of profitability, throughput and lead time. In this background, every industrial facility is in competition to remain competitive in the market and be flexible for future changes. It is not easy to change the environment of any facility in order to check the results beforehand therefore simulation is a viable option. Simulation tools are used to help analyze performance measures for improvement. This paper presents a case by analyzing a facility in order to improve its production using simulation tool. In this study, simulation model for the production facility of Fort Ceramic Company is developed from its current state and then changes are made to its inter-arrival time. Models for both improved and current systems are developed in the simulation tool. Data analyzed in the simulation tool shows better results that represent a significant improvement in productivity, cycle time and throughput time to optimizethe system.It is also observed that by decreasing the inter arrival time there is increase in the throughput which improves the revenue. (author)
[en] Determination of impurities in helium bond gas of FBTR fuel pins is one of the important aspects in the chemical quality control of fuel materials. This analysis is being carried out with the help of Varian make, model 3700, gas chromatograph equipment. This instrument has been operational for more than forty years now. Due to ageing, break-down frequency of equipment has increased drastically. Due to non availability of spare parts as well as services from the local suppliers, it is being maintained by the equipment electronics services group of Radiochemistry Division, RC&I G. This necessitates deep understanding of the principle of the equipment, all the logic and control PCB drawings and the operational procedure. The present report gives an overview of analytical technique of gas chromatography and specifically describes the challenges faced in the maintenance of the instrument. (author)
[en] Many different factors influence the quality of software. Among the most important of these factors is software complexity. One way to improve software quality, therefore, is to minimize its complexity making it more understandable and maintainable. The design phase of the software development life cycle plays an instrumental role in fostering quality in software. Seasoned designers often use past design best practices codified in the form of design patterns to make their designs and the resultant code more elegant, robust, and resilient to change. Little work, however, has been done to empirically assess the quantitative impact of design patterns on software complexity. This research is an attempt to fill this gap. A comparative analysis of before and after versions of program pairs written without and with design patterns was performed for all twenty three GoF (Gang of Four) design patterns. These program pairs were collected (or, in some cases, developed) and compared with respect to their complexity and size. The results of this comparative analysis reveal that the cyclomatic complexity of the programs written using design patterns was less for most of the design patterns as compared to the programs written without using design patterns. However, the values of CK metrics, number of classes, and software size SLOC (Source Lines of Code) increased when design patterns were used. (author)
[en] Highlights: • Radiomics models of MK and MD were imaging biomarkers for predicting IDH and MGMTmet genotypes. • Combined model improved to predict IDH, which showed the incremental value of radiomics features. • Combined model did not improve predictive performance of MGMTmet. - Abstract: Purpose: To test whether the whole-tumor radiomics analysis of DKI and DTI images could predict IDH and MGMTmet genotypes of astrocytomas.
[en] In medicine, the acquisition process in Computed Tomography Images (CT) is obtained by a reconstruction algorithm. The classical method for image reconstruction is the Filtered Back Projection (FBP). This method is fast and simple but does not use any statistical information about the measurements. The appearance of artifacts and its low spatial resolution in reconstructed images must be considered. Furthermore, the FBP requires of optimal conditions of the projections and complete sets of data. In this paper a methodology to accelerate acquisition process for CT based on the Maximum Likelihood Estimation Method (MLEM) algorithm is presented. This statistical iterative reconstruction algorithm uses a GPU Programming Paradigms and was compared with sequential algorithms in which the reconstruction time was reduced by up to 3 orders of magnitude while preserving image quality. Furthermore, they showed a good performance when compared with reconstruction methods provided by commercial software. The system, which would consist exclusively of a commercial laptop and GPU could be used as a fast, portable, simple and cheap image reconstruction platform in the future. (author)