نتایج جستجو برای: مدولاسیون msk
تعداد نتایج: 1422 فیلتر نتایج به سال:
Mango seed kernel (MSK) extract contains phytochemicals, bioactives, and fatty acids that are of interest to food nutritional scientists. The subcritical water extraction process (SCWE) can be effective in extracting valuable bioactives from MSK. In this study, SCWE was investigated optimized for the MSK using Box–Behnken experimental design. yield examined as a function various variables, name...
We conducted a five stage pilot study which initially consisted of a review of 75 case notes of people attending an emergency department (ED) in an inner London Teaching Hospital with musculoskeletal (MSK) low back pain (LBP). This review highlighted inconsistencies in how they were assessed and managed across and within different staff groups. We found patient documentation was often incomplet...
در سالهای اخیر از اینورتر برای کنترل سرعت موتورهای القایی سه فاز بهطور گستردهای استفاده میشود. به منظور کلیدزنی ادوات نیمههادی بهکار رفته در اینورترهای قدرت از روشهای گوناگونی از جمله مدولاسیون پهنای پالس استفاده میشود. تکنیکهای مختلفی برای مدولاسیون پهنای پالس وجود دارد. در این مقاله سعی شده است تا تکنیکهای مدولاسیون پهنای پالس سینوسی و بردار فضایی بهطور کامل توصیف و با شبیهسازی ای...
از آنجایی که گشتاور یک ماشین القایی توسط جریان ماشین و شار فاصله هوایی تعیین می گردد، کنترل مستقیم جریان به جای ولتاژ بسیار مناسب به نظر می رسد. همچنین مدولاسیون بردار فضایی (SVM) روش برتری برای اینورترها ی منبع جریان از نظر کاهش هارمونیک های مرتبه پایین، فرکانس کلیدزنی پایین تر و پیاده سازی آسان تر می باشد. این مقاله به معرفی مدولاسیون بردار فضایی برای اینورتر منبع جریان می پردازد. سپس با کن...
A taxonomy of VLSI grid model layouts is presented for the implementation of certain types of digital communication receivers based on the Viterbi algorithm. We deal principally with networks of many simple processors connected to perform the Viterbi algorithm in a highly parallel way. Two interconnection patterns of interest are he “shuffleexchange” and the “cube-connected cycles.” The results...
Efficient RF power amplifiers used in third generation systems require linearization in order to reduce adjacent channel inter-modulation distortion, without sacrificing efficiency. Digital baseband predistortion is a highly cost-effective way to linearize power amplifiers (PAs). New communications services have created a demand for highly linear high power amplifiers (HPA's). Traveling Wave Tu...
Computational musculoskeletal (MSK) models - 3D graphics-based models that accurately simulate the anatomical architecture and/or the biomechanical behaviour of organ systems consisting of skeletal muscles, tendons, ligaments, cartilage and bones - are valued biomedical tools, with applications ranging from pathological diagnosis to surgical planning. However, current MSK models are often limit...
The medullary sponge kidney is also known as Lenarduzzi's kidney or Cacchi and Ricci's disease from the first Italian authors who described its main features. A review of the scientific literature underlines particular rarity of the association of MSK with developmental abnormalities of the lower urinary tract and genital tract such as hypospadias and bilateral cryptorchidism. The work presente...
For a general class of constant-energy trellis-coded modulation schemes with 2 states, necessary and suÆcient conditions to guarantee that a maximumlikelihood sequence estimator can decode each symbol with a xed delay of symbols are derived. Additive white Gaussian noise is assumed. MSK is a special case that belongs to the family of modulation schemes with = 1. It is shown that when these cond...
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