منابع مشابه
Evidence for Elastic Disorder in the Elastically Ordered Phase of KCN
shows a behavior close to the undamped predictions, while the higher-I, sample demonstrates the reduction of tunneling rates due to dissipation. This reduction is consistent with the temperature-dependent rates found in high-currentdensity junctions. ' The use of well characterized junctions [independent estimate of C and direct measurement of R(T)], the extension to very low temperatures, and ...
متن کاملconditional copula-garch methods for value at risk of portfolio: the case of tehran stock exchange market
ارزش در معرض ریسک یکی از مهمترین معیارهای اندازه گیری ریسک در بنگاه های اقتصادی می باشد. برآورد دقیق ارزش در معرض ریسک موضوع بسیارمهمی می باشد و انحراف از آن می تواند موجب ورشکستگی و یا عدم تخصیص بهینه منابع یک بنگاه گردد. هدف اصلی این مطالعه بررسی کارایی روش copula-garch شرطی در برآورد ارزش در معرض ریسک پرتفویی متشکل از دو سهام می باشد و ارزش در معرض ریسک بدست آمده با روشهای سنتی برآورد ارزش د...
the role of application of dynamic assessment approach in improvement of iranian efl writing performance at different language proficiency levels
the present study sought to investigate the role of dynamic assessment (da) in improvement of iranian efl writing performance at different language proficiency levels. to this end, after conducting the quick placement test, 60 iranian efl learners were assigned to two groups with different language proficiency levels. in both groups each participant wrote two compositions, one before and one af...
The conformal anomaly of k-strings
Simple scaling properties of correlation functions of a confining gauge theory in d-dimensions lead to the conclusion that k-string dynamics is described, in the infrared limit, by a two-dimensional conformal field theory with conformal anomaly c = (d−2)σk/σ, where σk is the k-string tension and σ that of the fundamental representation. This result applies to any gauge theory with stable k-stri...
متن کاملOn the conformal anomaly of k-strings
We discuss the long distance behaviour of the flux tube associated to baryon vertices and argue that, if the gauge system admits stable k-strings, the conformal field theory describing this string in the IR has conformal anomaly c = (d −2)σk/σ , where σk is the k-string tension and σ that of the fundamental representation. We check this result in a 3D Z4 gauge model at finite temperature, where...
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ژورنال
عنوان ژورنال: Journal de Physique
سال: 1978
ISSN: 0302-0738
DOI: 10.1051/jphys:01978003902020500