background: as students' hookah use has become a widespread problem in the developing countries, it is time to understand the cognitive determinants of students' decisions to do so. this study aimed to investigate the roles of psychological and demographic factors associated with hookah use among male high school students. method s: this descriptive-analytical study was performed among 601 high...

background: as adolescent tobacco smoking has become a widespread problem in developing countries, it is time to understand the cognitive determinants of adolescents' decisions to engage in tobacco smoking. this study aimed to investigate the predicting factors associated with tobacco smoking among male adolescents based on prototype willingness model (pwm) as a theoretical framework. methods :...

background: ritalin is an amphetamine that possible to abuse, especially among college students. this study performed with aim to determine the attitudes, subjective norms, prototype, willingness and behavioral intentions regarding ritalin abuse among college students. methods: this cross-sectional study was conducted among 264 college students of isfahan university of medical sciences, during ...

objectives: this paper describes further improvement and preliminarily evaluation of a novel viscoelastic ankle-foot prosthesis prototype. the objective was to control the ankle hysteresis at slow and normal walking speeds. methods: inspired by the ankle biomechanics, in which the hysteresis differs based on the gait speeds, a manually damping control mechanism imbedded in the prosthesis for ad...

A new algorithm for clustering is presented — the Distributed Clustering Algorithm (DCA). It is designed to be incremental and to work in a real-time situation, thus making it suitable for robotics and in models of concept formation. The DCA starts with one cluster (or rather prototype at the center of the cluster), successively adding prototypes and distributing them according to data density ...

Validation is an essential and important step before the application of remote sensing products. This paper introduces a prototype of the validation network for remote sensing products in China (VRPC). The VRPC aims to improve remote sensing products at a regional scale in China. These improvements will enhance the applicability of the key remote sensing products in understanding and interpreta...

background drug design against human immunodeficiency virus type 1 (hiv-1) integrase through its mechanistic study is of great interest in the area in biological research. the main obstacle in this area is the absence of the full-length crystal structure for hiv-1 integrase to be used as a model. a complete structure, similar to hiv-1 of a prototype foamy virus integrase in complex with dna, in...

This paper provides experimental and simulation tools to characterize a Photo-Voltaic (PV) panel. To achieve this objective, we start from a PV electrical model and we propose a circuit using Diode-based-equivalent PV (DBEPV) panel. This circuit is presented as a prototype of an equivalent PV panel. It is designed to emulate a real PV module in different climatic conditions (irradiance and temp...

Learning Institutions although often advanced in the development of curriculum, have remained static in the use of technology in teaching and learning. In a world where information communications technologies are much more accessible, we examine how educators can employ these technologies to present subject material in more interesting