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Chinese Journal of Chemical Engineering 2020年第3期28卷 854-863页

作者： Samikannu Prabu Hong-wen wang Department of Chemistry Chung-Yuan Christian UniversityZhongli 320TaiwanChina

The electrodeposition of aluminum(Al)was studied using two electrolyte solutions,such as anhydrous AlCl3-urea and hydrated AlCl3·6 H2 O-urea.A systematic examination using cell voltages 1.0–2.0 V was carried out at temperatures((50–100)±2)°C.A needle-shaped cathode was employed for the deposition of aluminum.A dendrite and particulate microstructure of Al were observed on the needle-shaped *** improved condition for the manufacturing of small sizes and high purity of aluminum deposits was *** Al with a current efficiency(yield)of 84%–99%was obtained from those of non-aqueous electrolytes and only of 8.6%–9.3%from those of hydrated *** electrical conductivities of electrolytes remained considerable at((50–100)±2)°*** improved aluminum powders were used for the reaction with *** aluminum reacts with water at room temperature,producing pure H2 with 100%*** electrodeposited aluminum metal can be used as an excellent energy carrier.

关键词： Electrodepositions aluminum Molten salt

Chung-type Law of the Iterated Logarithm for Continuous Time Random Walk

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Acta Mathematicae Applicatae Sinica 2017年第4期33卷 959-966页

作者： wen-sherlg wang School of Economics Hangzhou Dianzi University Hangzhou 310018 China College of Science Hangzhou Normal University Hangzhou 310036 China

A continuous time random walk is a random walk subordinated to a renewal process used in physics to model anomalous diffusion. In this paper, we establish a Chung-type law of the iterated logarithm for continuous time... 详细信息

关键词： continuous time random walk law of the iterated logarithm stable law anomalous diffusion

On p-variation of bifractional Brownian motion

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Applied Mathematics(A Journal of Chinese Universities) 2011年第2期26卷 127-141页

作者： wang wen-sheng Department of Mathematics Hangzhou Normal University Hangzhou 310036 China

In this paper we study p-variation of bifractional Brownian motion. As an applica-tion, we introduce a class of estimators of the parameters of a bifractional Brownian motion andprove that both of them are strongly consistent; as another application, we investigate fractalnature related to the box dimension of the graph of bifractional Brownian motion.

关键词： Bifractional Brownian motion variation strongly consistent fractal nature.

Strong Laws of Large Numbers for Random Walks in Random Sceneries

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Acta Mathematicae Applicatae Sinica 2007年第3期23卷 495-500页

作者： wen-sheng wang Department of Statistics East China Normal University Shanghai 200062 China

In this paper, we study strong laws of large numbers for random walks in random sceneries. Some mild sufficient conditions for the validity of strong laws of large numbers are obtained.

关键词： Random walk in random scenery law of large numbers

Association between T174M polymorphism in the angiotensinogen gene and risk of coronary artery disease: a meta-analysis

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Journal of Geriatric Cardiology 2013年第1期10卷 59-65页

作者： wen-Zhu wang Department of Neurology Saint Petersburg Pavlov State Medical University St. Petersburg 197022 Russia

Background Angiotensinogen (AGT) T174M gene polymorphism has been suggested to be linked to risk of coronary artery disease, however, results from studies of this association have been inconsistent. In this study, we assess the relationship between AGT T174Mgene polymorphism and coronary artery disease. Methods We conducted a meta-analysis of 18 case-control studies with 8,147 coronary artery disease cases and 5,344 controls in Google scholar, PubMed, Cochrane Library and China National Knowledge Infrastructure (CNKI) databases to identify eligible studies published by July, 2012. Odds ratios (OR) and 95% confidence intervals (95% CI) were calculated from these studies. Results Overall, a significant association was found between angiotensinogen T174M polymorphism and coronary artery disease risk when all studies were pooled into the meta-analysis (TT vs. MM:OR = 0.53, 95%CI = 0.40–0.71; dominantmodel: OR = 1.16,95% CI = 1.01–1.35; recessive model: OR = 0.54, 95% CI = 0.40–0.72). In a stratified analysis, the results indicate a significant association in Caucasians suffering from coronary stenosis (TT vs. MM: OR = 0.38, 95% CI = 0.23–0.63; recessive model: OR = 0.39, 95% CI =0.23–0.64). No significant increased risk for coronary artery disease was found in Asians. Conclusions The meta-analysis indicate a significant association of T174Mpolymorphism with coronary stenosis risk in Caucasians.

关键词： Angiotensinogen Coronary artery disease Meta-analysis Polymorphism

A Strong Approximation Theorem for Quasi-associated Sequences

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Acta Mathematica Sinica,English Series 2005年第6期21卷 1269-1276页

作者： wen Sheng wang Department of Statistics East China Normal University Shanghai 200062 P. R. China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 P. R. China

By combining the Csorgo-Révész quantile transform methods and the Skorohod-Strassen martingale embedding theorem, we prove a strong approximation theorem for quasi-associated random variables with mean zero and finite （2 ＋ δ）th moment under polynomial decay rate. As a consequence, the decay rate for a strong approximation theorem of associated sequences of Yu （1996） is weakened.

关键词： Quasi-association Partial sum Strong approximation Quantile transform

A LIL and Limit Distributions for Trimmed Sums of Random Vectors Attracted to Operator Semi-stable Laws

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Acta Mathematica Sinica,English Series 2014年第9期30卷 1555-1565页

作者： wen Sheng wang Department of Mathematics Hangzhou Normal University

Let θ∈^d be a unit vector and let X, X1, X2,…… be a sequence of i.i.d. Xd-valued random vectors attracted to operator semi-stable laws. For each integer n ≥1, let X1,≤……≤ Xn,n denote the order statistics of X1, X2,..., Xn according to priority of index, namely ｜（X1,nθ）｜≥…≥ [（Xn,n,θ）1, where （., .） is an inner product on Rd. For all integers r ≥ 0, define by （r）Sn =∑n-r i=1Xi,n the trimmed sum. In this paper we investigate a law of the iterated logarithm and limit distributions for trimmed sums （r）Sn. Our results give information about the maximal growth rate of sample paths for partial sums of X when r extreme terms are excluded. A stochastically compactness of （r）Sn is obtained.

关键词： Operator semi-stable law domain of attraction law of the iterated logarithm stochastically compactness affine normalized partial sum trimmed sum

Non Blow-up Criterion for the 3-D Magneto-hydrodynamics Equations in the Limiting Case

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Acta Mathematica Sinica,English Series 2017年第7期33卷 969-980页

作者： wen Dong wang School of Mathematical Sciences Dalian University of TechnologyDalian 116024P.R.China

In this paper, we prove that suitable weak solution （u,b） of tne 3-D MHD equations can be extended beyond T if u E L∞（0,T; La（R3）） and the horizontal components bh of the magnetic field satisfies the well-known Ladyzhenskaya-Prodi-Serrin condition, which improves the corresponding regularity criterion by Mahalov-Nicolaenko-Shilkin.

关键词： Suitable weak solution MHD equations regularity criterion

On discrete time hedging errors in a fractional Black-Scholes model

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Applied Mathematics(A Journal of Chinese Universities) 2017年第2期32卷 211-224页

作者： wang wen-sheng College of Economics Hangzhou Dianzi UniversityHangzhou 310018China College of Science Hangzhou Normal UniversityHangzhou 310036China

In this paper we investigate asymptotic behavior of error of a discrete time hedging strategy in a fractional Black-Scholes model in the sense of Wick-ItS-Skorohod integration. The rate of convergence of the hedging error due to discrete-time trading when the true strategy is known for the trader, is investigated. The result provides new statistical tools to study and detect the effect of the long-memory and the Hurst parameter for the error of discrete time hedging.

关键词： discrete time hedging Wick-Itö-Skorohod integral rate of convergence weak convergence incomplete market fractional Brownian motion replicate Black-Scholes model

Deep Multimodal Reinforcement Network with Contextually GuidedRecurrent Attention for Image Question Answering

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Journal of Computer Science & Technology 2017年第4期32卷 738-748页

作者： Ai-wen Jiang Bo Liu Ming-wen wang College of Computer and Information Engineering Jiangxi Normal University Nanchang 330022 China College of Computer Science and Software Engineering Auburn University Auburn AL36849 U.S.A.

Image question answering (IQA) has emerged as a promising interdisciplinary topic in computer vision and natural language processing fields. In this paper, we propose a contextually guided recurrent attention model for solving the IQA issues. It is a deep reinforcement learning based multimodal recurrent neural network. Based on compositional contextual information, it recurrently decides where to look using reinforcement learning strategy. Different from traditional 'static' soft attention, it is deemed as a kind of 'dynamic' attention whose objective is designed based on reinforcement rewards purposefully towards IQA. The finally learned compositional information incorporates both global context and local informative details, which is demonstrated to benefit for generating answers. The proposed method is compared with several state-of-the-art methods on two public IQA datasets, including COCO-QA and VQA from dataset MS COCO. The experimental results demonstrate that our proposed model outperforms those methods and achieves better performance.

关键词： image question answering recurrent attention deep reinforcement learning multimodal recurrent neural network multimodal fusion