نتایج جستجو برای: مدل tvp var
تعداد نتایج: 145258 فیلتر نتایج به سال:
We use the conditional autoregressive value at risk (CAViaR) model in combination with time-varying parameter vector (TVP-VAR) based connectedness approach to study systematic tail transmission considering two types of crude oil (Brent and WTI) also four refined petroleum products prices (gasoline, heating oil, jet fuel propane) from January, 17, 1997 December 11, 2020. For robustness purposes,...
OBJECTIVE The purpose of this work is to analyze the clinical results of treating severe mitral stenosis (MS) with mild to moderate functional tricuspid regurgitation (FTR) with mitral valve replacement (MVR) alone or together with two different methods of tricuspid valvuloplasty (TVP). PATIENTS AND METHODS We split 132 patients into three groups: simple MVR with 47 cases (control group), MVR...
BACKGROUND AND PURPOSE Adjacent VCF frequently occurs after percutaneous vertebroplasty. Our aim was to evaluate PrVP in the prevention of PVNO-adjacent VCF. MATERIALS AND METHODS Radiographs of 68 patients who initially presented with a single-level unhealed fracture and underwent vertebroplasty were retrospectively reviewed for the occurrence of PVNO fracture. Patients in the nonpreventive ...
Principal component analysis (PCA) is an unsupervised method for learning low-dimensional features with orthogonal projections. Multilinear PCA methods extend PCA to deal with multidimensional data (tensors) directly via tensor-to-tensor projection or tensor-to-vector projection (TVP). However, under the TVP setting, it is difficult to develop an effective multilinear PCA method with the orthog...
Proteinuria is a major determinant of adverse renal outcome, and its reduction slows renal progression in glomerular diseases. However, the optimal target of proteinuria in glomerular diseases is unclear, and discrepancies in the definition of proteinuria produce ambiguous findings. Here we investigated the optimal target of proteinuria by using different definitions of proteinuria. We analyzed...
We propose a flow-based criterion (intensity of use) and stock-based (stability value) for choosing an anchor currency. This conceptual framework is applied to analyzing the RCEP region. According estimated TVP-VAR model, influence US dollar in region was weakened during global financial crisis COVID pandemic, creating opportunity both Chinese Yuan Japanese Yen compete In terms intensity criter...
This paper examines interlinkages and hedging opportunities between nine major cryptocurrencies from 30 September 2015 to 4 June 2020, a period which notably includes the COVID-19 outbreak lasting early 2020 end of sample period. Estimated time-varying correlation coefficients that are based on TVP-VAR show high degree interconnectedness among throughout Notably, correlations reach their joint ...
با توجه به اهمیت صادرات غیر نقتی در اقتصاد ایران، در این مطالعه با استفاده از روشهای غیر خطی، نحوه اثرگذاری عوامل مؤثر بر صادارت غیر نفتی کشور که در مطالعات تجربی و نظری مورد تأکید قرار گرفتهاند، شامل نرخ ارز حقیقی، رشد اقتصادی، درجه باز بودن اقتصاد، با دقت بیشتری مورد بررسی قرار گرفته شده است؛ به طوریکه با استفاده از دادههای سالیانه سالهای 1347 تا 1395 و مدل TVP-VAR ، اقدام به مدل سازی صا...
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