نتایج جستجو برای: profile reduction

تعداد نتایج: 702111  

2007
Shin-Whar Liu Tarunraj Singh

The design of robust time-optimal controllers using the sensitivity concept is presented in this paper. A parameter optimization problem is solved using the Switch Time Optimization algorithm to determine a bang-bang control profile that minimizes the maneuver time subject to the constraint that the sensitivity of the final states with respect to system parameters are zero. The proposed approac...

and I. Salehi, M. R. Forouzan,

In this paper, properties of slab deformation in sizing press mill as one of the slab reduction processes in hot rolling mills have been evaluated using the elastoviscoplastic finite element method with explicit formulation. Effect of prarameters such as initial slab width and thickness, reduction, feed pitch, and anvil speed on factors such as dogbone formation, head and tail fishtail profile,...

Journal: :journal of health sciences and surveillance system 0
shiva faghih department of community nutrition, school of nutrition and food sciences, shiraz university of medical sciences, shiraz, iran; alireza abadi department of statistics, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran; mehdi hedayati obesity research center, research institute for endocrine sciences, shahid beheshti university of medical sciences, tehran, iran; seyed masoud kimiagar department of clinical nutrition, faculty of nutrition sciences and food technology, shahid beheshti university of medical sciences, tehran, iran

background: obesity and metabolic syndrome are serious public health problems. it is suggested that high calcium diet can improve lipid profile, blood pressure and insulin resistance. methods: in this clinical trial, 75 healthy overweight or obese premenopausal women were randomly allocated to one of the following dietary regimens for 8 weeks: 1) a control diet 2) a calcium-supplemented diet co...

2011
Christophe Senot Dimitre Kostadinov Makram Bouzid Jérôme Picault Armen Aghasaryan

Most of the existing personalization systems such as content recommenders or targeted ads focus on individual users and ignore the social situation in which the services are consumed. However, many human activities are social and involve several individuals whose tastes and expectations must be taken into account by the system. When a group profile is not available, different profile aggregatio...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم پایه 1393

در این کار در اولین بخش از چهار عنصر سنگین شامل: سرب ،جیوه، تانتالیم و تنگستن بعنوان ماده هدف در فرآیند تلاشی در یک راکتور adsاستفاده شد و با کمک مدل آبشار درون هسته ای bertini (inc- bertini)، محاسبات مربوط به فرآیند تلاشی ماده هدف برای پروتون هایی در بازه انرژی بین 115mev تا5gev انجام شد. طبق نتایج بدست آمده از این مدل برای این چهار عنصر سنگین، تنگستن بیشترین تعداد نوترون را تولید می کند و بعن...

Journal: :International journal of occupational safety and ergonomics : JOSE 2012
Andrzej Wieczorek

This paper presents results of experimental research on the acoustic properties of gear wheels with high-profile teeth with differentiated tooth height. Those results showed that gear transmissions with high-profile teeth have the best acoustic properties, with the value of the transverse contact ratio εα ≈ 2.0. They also showed that a reduction in tooth height, and thereby in contact ratio, in...

Journal: :The Review of scientific instruments 2009
I Pusztai G Pokol D Dunai D Réfy G Pór G Anda S Zoletnik J Schweinzer

A deconvolution-based correction method of the beam emission spectroscopy (BES) density profile measurement is demonstrated by its application to simulated measurements of the COMPASS and TEXTOR tokamaks. If the line of sight is far from tangential to the flux surfaces, and the beam width is comparable to the scale length on which the light profile varies, the observation may cause an undesired...

Journal: :مجله دندانپزشکی 0
محمد ضرابیان m. zarrabian مرضیه علیقلی m. aligholi نسترن لقمانی نژاد n. loghmani nejad

statement of problem: root canal cleaning and elimination of the source of infection are the most important basis and the main requirements for successful root treatment since the main cause of failure in root treatment is the permeation of bacteria or their products into the periapical tissues. nowadays, the newly designed and prcsented instruments for canal instrumentation can improve root tr...

In this paper, simultaneous placement of distributed generation, capacitor bank and protective devices are utilized to improve the efficiency of the distribution network. The objectives of the problem are reduction of active and reactive power losses, improvement of voltage profile and reliability indices and increasing distribution companies’ profit. The combination of firefly algorithm, parti...

Journal: :Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie 2011
Susanne Marschner Raymond Goodrich

Bacterial contamination and emerging infections combined with increased international travel pose a great risk to the safety of the blood supply. Tests to detect the presence of infection in a donor have a 'window period' during which infections cannot be detected but the donor may be infectious. Agents and their transmission routes need to be recognized before specific tests can be developed. ...

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