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Leuven, Belgium

Yamamoto M.,ITEC Inc
IEEJ Transactions on Electronics, Information and Systems | Year: 2011

The data generated at a very high rate by sensors and RFIDs are required to be handled by continuous queries keeping real time response. Because of its purpose, DSMSs are used in several cases of these large scale systems. On the other hand, sensor terminal systems include light RDBMSs generally in many cases. So if light RDBMSs can handle the high rate data directly, it is convenient for several applications. This paper proposes a speed-up method of stream processing by using a light RDBMS SQLite without any special modifications. If DSMSs are categorized by performance such as large, medium and small scale, this method aims at a small or medium scale performance. The database performance mainly depends on storage access time, so this proposed method adopts a memory database, a bulk store records technique and parallel processing while taking advantage of multi-core CPU configurations of terminal systems. © 2011 The Institute of Electrical Engineers of Japan. Source


Maervoet J.,Catholic University of Leuven | Brackman P.,RouteYou | Verbeeck K.,Catholic University of Leuven | De Causmaecker P.,Catholic University of Leuven | And 2 more authors.
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2013

The present article introduces the outdoor activity tour suggestion problem (OATSP). This problem involves finding a closed path of maximal attractiveness in a transportation network graph, given a target path length and tolerance. Total path attractiveness is evaluated as the sum of the average arc attractiveness and the sum of the vertex prizes in the path. This problem definition takes its rise in the design of an interactive web application, which suggests closed paths for several outdoor activity routing modi, such as mountain biking. Both path length and starting point are specified by the user. The inclusion of POIs of some given types enrich the suggested outdoor activity experience. A fast method for the generation of heuristic solutions to the OATSP is presented. It is based on spatial filtering, the evaluation of triangles in a simplified search space and shortest path calculation. It generates valuable suggestions in the context of a web application. It is a promising method to generate candidate paths used by any local search algorithm, which further optimizes the solution. © 2013 Springer-Verlag. Source


Yamamoto M.,ITEC Inc
Electronics and Communications in Japan | Year: 2013

The data generated at a very high rate by sensors and RFIDs must be handled by continuous queries that respond in real time. Because of its purpose, DSMSs are used in several cases in these large-scale systems. On the other hand, sensor terminal systems include a light RDBMS generally in many cases. Thus, if a light RDBMS can handle the high-rate data directly, it is convenient for several applications. This paper proposes a method for speeding up stream processing by using a light RDBMS, SQLite, without any special modifications. If DSMSs are categorized by performance such as large-, medium-, and small-scale, this method aims at one with small- or medium-scale performance. The database performance mainly depends on storage access time, so the proposed method adopts a memory database, a bulk storage records technique, and parallel processing while taking advantage of the multicore CPU configurations of terminal systems. © 2013 Wiley Periodicals, Inc. Source


Sheta A.F.,University of Jordan | Rausch P.,Nurnberg University of Applied Sciences | Al-Afeef A.,ITEC Inc
Res. and Dev. in Intelligent Syst. XXVIII: Incorporating Applications and Innovations in Intel. Sys. XIX - AI 2011, 31st SGAI Int. Conf. on Innovative Techniques and Applications of Artificial Intel. | Year: 2011

Currently, many automotive companies struggle with expensive product recalls. To overcome these issues the need for quality management increases. Hence, we propose a monitoring and control framework for Lost Foam Casting (LFC) manufacturing processes using Electrical Capacitance Tomography (ECT) and an evolutionary Genetic Programming (GP) based system. The multi-tier framework simulates the process output, helps simulating a metal filling modeling part of the process and supports product quality control. The results are very promising. © Springer-Verlag London Limited 2011. Source


Benites-Rengifo J.L.,Centro Estatal Of Cancerologia Of Nayarit | Benites-Rengifo J.L.,ITEC Inc | Vega-Carrillo H.R.,Autonomous University of Zacatecas
AIP Conference Proceedings | Year: 2014

The neutron spectra, the Kerma and the absorbed dose due to neutrons were estimated along the incoming beam in a solid water phantom. Calculations were carried out with the MCNP5 code, where the bunker, the phantom and the model of the15 MV LINAC head were modeled. As the incoming beam goes into the phantom the neutron spectrum is modified and the dosimetric values are reduced. © 2014 AIP Publishing LLC. Source

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