Dynamic navigation devices like Global Positioning Systems (GPSs) are deployed for various purposes in different areas and these usually the central point of interest groups hackers to exploit data sent received by GPS systems. The is manipulated using spoofing attacks. This paper proposes a robust solution attacks carried out manipulate, control modify location sharing smart containers. primar...

Este artículo presenta la experiencia en el desarrollo de software orientado a objeto basado en componentes sobre CORBA en una aplicación para la Monitorización Automática de Vehículos (AVM en inglés). El sistema está arquitecturado en base a componentes de radio (para establecer las comunicaciones con los vehículos) y localización (lleva control en tiempo real de la información enviada por los...

This paper discusses ZBMs technical contributions to high level programming languages from the viewpoint of speciJic languages and their contributions to the technology. The philosophy used in this paper is that it is the appropriate collection of features in a language which generally makes the contribution to the technology, rather than an individual feature. Those ZBM languages deemed to hav...

M-learning is an important role in e-learning environment by mobile device. However, in Taiwan junior high education, few research was to develop an m-learning system on the geography curriculum. Geography courses are quite indispensable. The sense of direction of training is one of the first studies in Taiwan junior high education of geography curriculum; however, many students’ sense of direc...

OBJECTIVE This study aims to evaluate the impact and potential prognostic roles of the pre- and post-treatment Glasgow prognostic score (GPS) and the change thereof in patients with advanced head and neck cancer undergoing concurrent chemoradiotherapy (CCRT). METHODS We collected GPS and clinicopathological data of 139 stage III, IVA, and IVB head and neck cancer patients who underwent CCRT b...

Global positioning systems (GPSs) and geographical information systems (GISs) have been widely used to collect and synthesize spatial data from a variety of sources. New advances in satellite imagery and remote sensing now permit scientists to access spatial data at several different resolutions. The Internet facilitates fast and easy data acquisition. In any one study, several different types ...

Objectives: This study aimed to analyze within-week and within-match external load variations in male soccer players over three consecutive matches during a congested week.Methods: The cohort included nineteen elite professional (age: 26.5 ± 4.3 years) from European First League team. Players were monitored daily full season using measurements collected by global positioning systems (GPSs). GPS...

One of the most important problems in distributed database systems is the concurrency control. This paper considers algorithms simulating the implementation of centralized two-phase locking (2PL) in distributed database systems and simulation results. It describes specifically the simulations of two-version 2PL and 2PL with integrated timestamp ordering mechanism. In concurrency control method ...