Our research explores how the COVID-19 pandemic has influenced asymmetric spillover effects in oil and gold markets. Through a VAR(p)-BEKK-AGARCH(1,1) model fitted to daily price data, 1) we find evidence of only from market that this effect is stronger during 2) conclude negative information shock larger impact on return volatility compared positive intensified pandemic.

هدف اصلی این پژوهش ارائه چارچوبی برای ارزیابی عملکرد شرکت بهره‌­برداری قطار شهری مشهد بر مبنای کارت امتیازی متوازن و تکنیک تصمیم‌­گیری چندمعیاره (بهترین ـ بدترین فازی) است. حاضر از نظر هدف، کاربردی روش، کمّی اسنادی جمع‌­آوری داده‌های کیفی اساس 15 خبره در طی مقطع زمانی بین سال­‌های 1396 تا 1398 صورت پذیرفت. 9 معیار منظر مالی، 16 مشتریان، 8 فرایند داخلی 14 رشد توسعه یادگیری طریق اسناد پژوهش­‌های پ...

China’s introduction of CSI300 futures in 2010 has aroused widespread attention to whether the stock index futures market has effectively stabilized price fluctuations of its spot market in the past four years. Since the prices of CSI300 futures and CSI300 contain numerous noises and fluctuate drastically over time, this paper applies discrete wavelet transform to denoise these series by decomp...

The Multidimensional Scale of Irrational Beliefs (MSIB) is a brief and theoretically founded measure of irrational thinking as conceptualized by Albert Ellis in his most recent works on Rational Emotive Behavior Therapy (e.g., Ellis, 2003). With a total of 18 items, it captures demandingness, negative self-evaluation, and low frustration tolerance as the three core aspects of irrationality. Unl...

Bu çalışmanın amacı, dünya petrol, kömür ve doğal gaz fiyatlarındaki değişikliklerin düzeltilmemiş piyasa faiz oranına göre düzeltilmiş BIST elektrik endeksinin getirisine etkisinin 17 Mayıs 2010 – 29 2020 dönemi için araştırılmasıdır. Değişkenler arasındaki nedensellik ilişkisi Granger Nedensellik testi ile, oynaklık yayılımı ise GARCH (1,1) ADC BEKK yöntemleri ile incelenmiştir. Analiz bulgul...

Over 20 years ago we reported for the first time the presence of mechanical abnormalities in the contraction pattern of patients with the long QT syndrome (LQTS), showing the presence both of rapid early contraction and of an extended ‘plateau’ phase clearly visible at M-mode Doppler before rapid relaxation. These abnormalities were almost absent in controls and more prevalent among symptomatic...