1,721,682 research outputs found
Triathlon de distance olympique. Évaluation physiologique
No full textDe Vito G., Sproviero E., Figura F. Triathlon de distance olympique. Évaluation physiologique. In: Les Cahiers de l'INSEP, n°20, 1997. Un sport, deux enchaînements, trois disciplines : le triathlon. Actes du 1er symposium international de l'entraînement en triathlon. pp. 119-121
A budget impact analysis to to evaluate a program of adapted physical activity (APA) for an effective management of patients with type II diabetes
No full textType II diabetes has a high prevalence rate worldwide, especially in industrialized countries. By requiring increasing health expenditures and resources, the disease and its complications generate a considerable economic burden. Since many years several institutions promote awareness and information programs regarding the most effective strategies to prevent and control diabetes. By reducing the severity of the disease and its complications, Adapted Physical Activity (APA) represents an ideal instrument to remodulate the Therapeutic Healthcare Management Protocol (THMP) of patients with type II diabetes and may be defined as a new health technology. On the basis of these considerations, a Budget Impact Analysis (BIA) was carried out from the healthcare management perspective to evaluate advantages deriving from the introduction of a structured program of APA for diabetics in Campania, one of the Italian regions with the highest prevalence of diabetes
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Scattering and diffraction by wedges 1: the Wiener-Hopf solution - theory
Full text linkThe book has a dual purpose. The first is to expose a general methodology to solve problems of electromagnetism in geometries constituted of angular regions. The second is to bring the solutions of some canonical problems of fundamental importance in modern electromagnetic engineering with the use of the Wiener-Hopf technique.
In particular, the general mathematical methodology is very ingenious and original. It is based on sophisticated and attractive procedures exploiting simple and advanced properties of analytical functions. Once the reader has acquired the methodology, they can easily obtain the solution of the canonical problems reported in the book. The book can be appealing also to readers who are not directly interested in the detailed mathematical methodology and/ or in electromagnetics. In fact the same methodology can be extended to acoustics and elasticity problems. Moreover, the proposed practical problems with their solutions constitute a list of reference solutions and can be of interest in engineering production in the field of radio propagations, electromagnetic compatibility and radar technologies
A New Synthesis Technique of Control Signals for Power Converters Based on Pulse Position Modulation
No full textOver the last years there has been plenty of research activity about modulation techniques with the aim of optimizing power converters performance. Traditional methods such as Pulse Width Modulation and Selective Harmonic Elimination/Mitigation are widely used but have limitations in harmonic performance and dynamic response. This paper aims at presenting a completely new approach in the synthesis process of control signals referred to as Pulse Position Modulation, which can generate the best possible control signal by adding up not-centered pulses in each control period. In particular, the proposed technique can optimize the positions of all the pulses making up the overall control signal thus allowing better harmonic performance compared to Pulse Width Modulation techniques featuring fixed position of the pulses. Moreover, the proposed technique allows for largely better dynamic performance in comparison to techniques such as Selective Harmonic Elimination/Mitigation that can similarly optimize the harmonic quality by modifying the position of the pulses. The paper includes a thorough mathematical analysis of the control signal synthesis technique, essential for correctly identifying the optimal pulse positions. A complete campaign of experimental tests proves the remarkable enhancement of this innovative approach in harmonic quality and dynamic performance compared to the above-mentioned techniques
Scattering and diffraction by wedges 2: the Wiener-Hopf solution : advanced applications
Full text linkThe book has a dual purpose. The first is to expose a general methodology to solve problems of electromagnetism in geometries constituted of angular regions. The second is to bring the solutions of some canonical problems of fundamental importance in modern electromagnetic engineering with the use of the Wiener-Hopf technique. In particular, the general mathematical methodology is very ingenious and original. It is based on sophisticated and attractive procedures exploiting simple and advanced properties of analytical functions. Once the reader has acquired the methodology, she/he can easily obtain the solution of the canonical problems reported in the book. The book can be appealing also to readers who are not directly interested in the detailed mathematical methodology and/ or in electromagnetics. In fact the same methodology can be extended to acoustics and elasticity problems. Moreover, the proposed practical problems with their solutions constitute a list of reference solutions and can be of interests in engineering production in the field of radio propagations, electromagnetic compatibility and radar technologies
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