نتایج جستجو برای: loss reduction
تعداد نتایج: 903118 فیلتر نتایج به سال:
Abstract High conversion rate energy plays an increasingly important role in the “double carbon” goal as well saving and emission reduction goals. The technology of loss has become focus modern power system construction. A technical line technique is implemented this work for feeders distribution network with abnormal losses circuit. Power flow calculations, analysis, comparison are conducted u...
front end یک رادار باند (f=9.4ghz)x به صورت (microwave integrated circuits)mic طراحی، ساخته و اندازه گیری شد . تقویت کننده کم نویز مدار یک تقویت کننده بالانس می باشد که ترانزیستورهای آن gaasmesfet به صورت چپ می باشند. بهره تقویت کننده در فرکانس 9.4ghz برابر 13db و عدد نویز آن 3db اندازه گیری می باشد . میکسر مدار، یک میکسر دیودی به صورت تک بالانس بوده و هایبرید 180 درجه آن از نوع حلقه (ratrace) ...
background and objective: obesity is an independent risk factor for cardiovascular diseases and diabetes. the abnormalities involved may be mediated by increased secretions of inflammatory proteins called adipocytokines by the adipose tissue. thus, monitoring adipocytokines during weight loss could be helpful in progress evaluation of weight reduction programs. since high-protein diets are cons...
ارزیابی میزان کاهندگی صدای گوشی های ایرماف رایج برمبنای روش میدانی میکروفن داخل گوش در محیط های کاری
Background and aims Nominal noise reduction rating of the earmuff manufacturers can be different compared with the actual noise attenuation rating. The current study aimed to determine the actual noise reduction rate of current hearing protection devices in the real workplaces using a field microphone in real ear method (FMIRE). Methods: In this cross-sectional study, five common earmuffs we...
ABSTRACT- In recent years, intensive drought has caused a severe yield reduction in rain-fed trees. Increasing runoff of low amount rainfall can be used to provide partial water requirement of rain-fed trees. To achieve this objective, some strategies including gravel removal (G), rill construction across to slope (R) and applying of baking soda (S) and their effects on runoff, rainfall infiltr...
Nonlinear dimensionality reduction by manifold embedding has become a popular and powerful approach both for visualization and as preprocessing for predictive tasks, but more efficient optimization algorithms are still crucially needed. MajorizationMinimization (MM) is a promising approach that monotonically decreases the cost function, but it remains unknown how to tightly majorize the manifol...
In moderate levels of noise, listeners report that noise reduction (NR) processing can improve the perceived quality of a speech signal as measured on a typical MOS rating scale. Most quantitative experiments of intelligibility, however, show that NR reduces the intelligibility of noisy speech signals, and so should be expected to increase the cognitive effort required to process utterances. To...
The paper presents mathematical underpinnings of the locally linear embedding technique for data dimensionality reduction. It is shown that a cogent framework for describing the method is that of optimisation on a Grassmann manifold. The solution delivered by the algorithm is characterised as a constrained minimiser for a problem in which the cost function and all the constraints are defined on...
Background and objectives: The purpose of the present study was to examine the effect of a progressive resistance-training program beside an energy deficit diet on body Composition, insulin resistance and plasma adiponectin levels in overweight adult men. Methods: Twenty-five overweight men (age =32.1 ± 4.3 years, BMI =28.9 ± 1.3 kg.m-2) were randomly assigned into one of the two groups: resis...
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