Results 51 to 60 of about 172,315 (161)
Iraqi Journal of Physics, 2019 In this paper solar radiation was studied over a region of Baghdad (Latitude 33.3o and longitude 44.4o). The two parts of global solar radiation: diffuse and direct solar radiation were estimated depending on the clearance index of measured data ...
Gheidaa Sabeeh Al-Hassany
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Evaluation of diffuse fraction and diffusion coefficient using statistical analysis
Applied Water Science, 2020 In this study, eighty models are proposed in order to estimate the diffuse fraction and diffuse coefficient. For the proposed models, sunshine ratio and clearness index are considered as predictors.
Hicham Salhi +2 more
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Fractional Advection-Diffusion-Asymmetry Equation [PDF]
Physical Review Letters, 2020 Fractional kinetic equations employ non-integer calculus to model anomalous relaxation and diffusion in many systems. While this approach is well explored, it so far failed to describe an important class of transport in disordered systems. Motivated by work on contaminant spreading in geological formations we propose and investigate a fractional ...
Wanli Wang, Eli Barkai
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Assessment of the diffuse-fraction estimation in China using the binary BRL model
Frontiers in Energy ResearchDiffuse and direct radiation distribution are crucial for the design and construction of photovoltaic power systems. However, due to the high cost and relatively complex maintenance, there are relatively few observation stations for diffuse and direct ...
Yu Xingguo +3 more
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Generative Fractional Diffusion Models
Advances in Neural Information Processing Systems 37We introduce the first continuous-time score-based generative model that leverages fractional diffusion processes for its underlying dynamics. Although diffusion models have excelled at capturing data distributions, they still suffer from various limitations such as slow convergence, mode-collapse on imbalanced data, and lack of diversity. These issues
Nobis, Gabriel +13 more
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Diffuse Large B-Cell Lymphoma Arising De Novo in Unilateral Tonsil [PDF]
National Journal of Laboratory Medicine, 2014 Diffuse Large B Cell Lymphomas, account for a considerable fraction of lymphoid malignancies. But, the primary origin of this neoplasm in the head and neck region is comparatively less frequent.
Hemalatha. A.L +4 more
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Double Trouble in Systemic Sclerosis: Complete Heart Block and Systolic Dysfunction [PDF]
Journal of Clinical and Diagnostic Research, 2018 A 26-year-old female, a known case of diffuse systemic sclerosis present with multiple episodes of syncope and progressive dyspnoea over six months.
Akshyaya Pradhan +3 more
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Molecular Communication in Fractional Diffusive Channel [PDF]
IEEE Communications Letters, 2020 The molecular communication system with anomalous/fractional diffusion inside a one-dimensional (1-D) environment is considered. The time-dependent diffusivity is incorporated in terms of the power-law diffusivity, and the expression of first passage time density (FPTD) is derived.
Lokendra Chouhan +2 more
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Monthly average daily diffuse solar radiation in Poland within the period 2005–2015
ITM Web of Conferences, 2018 In this paper an 11-year series of daily values of diffuse solar radiation registered at 8 actinometric stations in Poland was used to describe the characteristics of diffuse radiation and diffuse fraction of global radiation for the area of Poland ...
Kleniewska Małgorzata +2 more
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Sparse Optimal Control for Fractional Diffusion [PDF]
Computational Methods in Applied Mathematics, 2017 Abstract We consider an optimal control problem that entails the minimization of a nondifferentiable cost functional, fractional diffusion as state equation and constraints on the control variable. We provide existence, uniqueness and regularity results together with first-order optimality conditions.
Enrique Otárola, Abner J. Salgado
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