نتایج جستجو برای: صوت معادله zk
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پلاسمای غبارآلود گاز یونیزه شده ای با دمای پایین است که شامل الکترونها، یونها و دانه های غباری است که با ابعاد میکرون یا کوچکتر از میکرون که بصورت منفی یا مثبت باردار شده اند. در چنین شرایطی ذرات غبار به دلیل مجموعه ای از جریان های یون و الکترون از پلاسمای زمینه می توانند باردار شوند. بنابراین بار غبار متغیر دینامیکی دیگری محسوب می شود که پلاسمای غبارآلود را از پلاسمای یون-الکترون (معمولی) را ج...
Subversion zero knowledge for non-interactive proof systems demands that zero knowledge (ZK) be maintained even when the common reference string (CRS) is chosen maliciously. SNARKs are proof systems with succinct proofs, which are at the core of the cryptocurrency Zcash, whose anonymity relies on ZK-SNARKs; they are also used for ZK contingent payments in Bitcoin. We show that under a plausible...
The sign in the denominator is chosen so that the modulus of the Laguerre step at zk , viz. L zk ð Þ j j, is as small as possible. The method can be shown to be cubically convergent for isolated roots (real or complex) and linearly convergent for multiple roots. The routine generates a sequence of iterates z1; z2; z3; . . . , such that P zkþ1 ð Þ j j < P zk ð Þ j j and ensures that zkþ1 þ L zkþ...
Adaptive security, while more realistic as an adversarial model, is typically much harder to achieve compared to static security in cryptographic protocol design. Universal composition (UC) provides a very attractive framework for the modular design of cryptographic protocols that captures both static and adaptive security formulations. In the UC framework, one can design protocols in hybrid wo...
Phase transitions create a domain structure with defects, which has been argued by Zurek and Kibble (ZK) to depend in a characteristic way on the quench rate. We present an experiment to measure the ZK scaling exponent sigma. Using long symmetric Josephson tunnel junctions, for which the predicted index is sigma=0.25, we find sigma=0.27+/-0.05. Further, we agree with the ZK prediction for the o...
BACKGROUND A reliable means of menstrual suppression would greatly improve the quality of life for women. Information is lacking on the direct endometrial effects and appropriate dosages of new antiprogestins that may be useful for this purpose. METHODS The current work evaluated three different systems in macaque monkeys. First, the range of doses of two relatively new antiprogestins, ZK 137...
BACKGROUND Plasma and serum biomarkers of angiogenesis and activated endothelial cells were evaluated to assess biological activity of PTK787/ZK 222584 (PTK/ZK), a novel oral angiogenesis inhibitor targeting all known vascular endothelial growth factor (VEGF) receptor tyrosine kinases. PATIENTS AND METHODS Patients with colorectal cancer (CRC) (n=63) were enrolled into two phase I/II dose esc...
هدف اصلی در این نوشتار محاسبه ی ضرایب آئرودینامیکی بال در جریان مافوق صوت دائم برمبنای حل جریان پتانسیل با استفاده از روش اجزای مرزی است. در این راستا ابتدا معادله ی حاکم بر جریان پتانسیل مافوق صوت استخراج و خطی سازی شده، و سپس با استفاده از روش اجزای مرزی و اعمال توابع شکل مرتبه ی اول، دستگاه معادلات گسسته برای محاسبات جریان تشکیل شده است. در خلال حل این معادلات مشکلات محاسباتی مربوط به تعیین ...
In a primary research report we have introduced a simple method for recovering sparse signals from a series of noisy observations using a Kalman filter (KF). The new method utilizes a so-called pseudomeasurement technique for optimizing the convex minimization problem following from the theory of compressed sensing (CS). The CS-embedded KF approach has shown promising results when applied for r...
A unified and relatively simple proof is given for some well-known results involving finite unions of uniformly separated sequences. In this note we consider finite unions of uniformly separated sequences, which appear in several well-known theorems involving both Hardy and Bergman spaces. The techniques of proof, some of which are quite involved, differ greatly from result to result. The purpo...
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