Hai-Ruo Zhang, Ming Zhou, Jun Yi Guo,
The paper studies the expected value of a discounted penalty function for a classical risk model with a two-step premium rate. In this model, we firstly derive and solve an integro-differential equation for the Gerber–Shiu discounted penalty function, then use this result to obtain the expressions of ruin probability and the joint distribution of the surplus immediately before ruin and the deficit at ruin.
Tópico(s): Insurance and Financial Risk Management
2006 - Elsevier BV | Statistics & Probability Letters
Ya‐Min Li, Hai‐Lou Li, Jun Jiang, Lijuan Chen, Jun‐Wei Zhao,
Three kinds of distinguishing ala-decorated RE-incorporated (ala = l-alanine, RE = rare-earth) polytungstoarsenate hybrids containing {As2W19O68} building blocks [H2N(CH3)2]13Na3H2[Eu4W5(H2O)10(ala)3O14(As2W19O68)2]·35H2O (1), [H2N(CH3)2]12Na2H2[RE4W6(H2O)8(ala)4O15(OH)2(As2W19O68)2]·36H2O [RE = Gd3+ (2), Tb3+ (3)], and [H2N(CH3)2]12Na4[RE4W6(H2O)10(ala)2O15(OH)2(As2W19O68)2]·40H2O [RE = Dy3+ (4), Ho3+ (5), Er3+ (6), Yb3+ (7), Lu3+ (8)] were made in a facile one-step assembly strategy. The polyoxoanion skeletons of 1– ...
Tópico(s): Nanocluster Synthesis and Applications
2019 - American Chemical Society | Inorganic Chemistry
Ying Wang, Alister J. Page, Hai‐Bei Li, Hu‐Jun Qian, Menggai Jiao, Zhijian Wu, Keiji Morokuma, Stephan Irle,
Quantum chemical molecular dynamics simulations of graphene nucleation on the Ni(111) surface show that graphene creates its own step-edge as it forms. This "step-edge self-assembly" is driven by the formation of thermodynamically favorable Ni-C σ-bonds at the graphene edge. This dynamic aspect of the Ni(111) catalyst is in contrast to the commonly accepted view that graphene nucleates on a pre-existing, static catalyst step-edge. Simulations also show that, simply by manipulating the subsurface ...
Tópico(s): Quantum and electron transport phenomena
2013 - Royal Society of Chemistry | Nanoscale
Haitao Zhang, Lei Zhang, Jun Chen, Hai Su, Fangyan Liu, Weiqing Yang,
With plenty of unique porous structure at micro-/nano scale, hierarchically porous carbons (HPCs) are promising for usage in advanced electric double layer supercapacitors (EDLCs) as the electrode materials. However, wide-range adoption of HPC for practical application is largely shadowed by its extremely complex synthesis process with considerably low production efficiency. Herein we reported a simple template-free, one-step sintering method, to massively produce the HPCs for high-performance EDLCs. ...
Tópico(s): Advancements in Battery Materials
2016 - Elsevier BV | Journal of Power Sources
Yingtao Yu, Jing Wang, Jun-Hai Zhang, Haijun Yang, Bo‐Qing Xu, Juncai Sun,
Platinum (Pt) nanocrystals with special surfaces attract much attention in the field of chemistry because the surface structure plays a vital role for the activity and selectivity of Pt catalyst. The surface evolution of Pt nanocrystals is closely related with facet growth, which depends on not only the oxidizing property of Pt precursor but also the competitiveness of precursor adsorption on the nanocrystal surface. Besides precursor/protector ratio, the charge of precursor also influences its competitive ...
Tópico(s): Nanomaterials for catalytic reactions
2007 - American Chemical Society | The Journal of Physical Chemistry C
Lizhi Zhang, Zhihai Cheng, Qing Huan, Xiaobo He, Xiao Lin, Gao Li, Zhitao Deng, Nan Jiang, Qi Liu, Shixuan Du, Hai-Ming Guo, Hong‐Jun Gao,
Adsorption behavior of iron–phthalocyanine (FePc) at low submonolayer coverage on a reconstructed Au(111) single crystalline surface was investigated by a combination of low temperature scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. A site- and orientation-selective adsorption was found at different temperatures and molecular coverages by means of STM. Further DFT calculations demonstrate that the energy difference between different adsorption configurations leads ...
Tópico(s): Molecular Junctions and Nanostructures
2011 - American Chemical Society | The Journal of Physical Chemistry C
Guang-Hong Lü, Long Cheng, Kameel Arshad, Yue Yuan, Jun Wang, Shaoyang Qin, Ying Zhang, Kaigui Zhu, Guang–Nan Luo, Hai-Shan Zhou, Bo Li, J. Wu, Bo Wang,
The linear plasma device Simulator for Tokamak Edge Plasma (STEP) has been constructed at Beihang University, Beijing, to study plasma-material interactions (PMIs) for fusion reactor applications. The device can produce versatile low-energy and high flux plasma in laboratory experiments and is highly cost-effective to replicate the fusion-relevant plasma environment to study PMI processes. The attractive feature of the device is its compact design with a main body dimension of 1.5 × 1.5 × 0.8 m3 including ...
Tópico(s): Plasma Diagnostics and Applications
2017 - Taylor & Francis | Fusion Science & Technology
Hoàng Văn Minh, Tran Quoc Bao, Lan Vu, Thi Kim Ngan Nguyen, Kim Bảo Giang, Quynh Nga Pham, Tuan Lam Nguyen, Duc Truong Lai, Jun Nakagawa, Hai‐Rim Shin, Warrick Kim, Leanne M Riley, Christina Wadhwani, Dinh Bac Truong, Dac Phu Tran,
This study aims to describe the prevalence of raised blood pressure and the situation of management for raised blood pressure among the adult population in Vietnam. It also aims to examine the association between diversified socioeconomic and behavioral factors of raised blood pressure and awareness of raised blood pressure. Data were obtained from the STEPS survey conducted in Vietnam in 2015. Survey sample was nationally representative with a total of 3,856 people aged 18–69 years old. The study ...
Tópico(s): Cardiovascular Health and Risk Factors
2019 - Hindawi Publishing Corporation | International Journal of Hypertension
Xiao Hai, Shibo Xi, Sharon Mitchell, Karim Harrath, Haomin Xu, Dario Faust Akl, Debin Kong, Jing Li, Zejun Li, Tao Sun, Huimin Yang, Yige Cui, Chenliang Su, Xiaoxu Zhao, Jun Li, Javier Pérez‐Ramírez, Jiong Lu,
Tópico(s): Nanomaterials for catalytic reactions
2021 - Nature Portfolio | Nature Nanotechnology
Xiao Hai, Shibo Xi, Sharon Mitchell, Karim Harrath, Haomin Xu, Dario Faust Akl, Debin Kong, Jing Li, Zejun Li, Tao Sun, Huimin Yang, Yige Cui, Chenliang Su, Xiaoxu Zhao, Jun Li, Javier Pérez‐Ramírez, Jiong Lu,
Tópico(s): Catalytic Processes in Materials Science
2022 - Nature Portfolio | Nature Nanotechnology
Chengxiang Liu, Zili Xie, Ping Han, Bin Liu, Liang Li, Jun Zou, Shengming Zhou, Lihui Bai, Zhang Hai Chen, Rong Zhang, Youdou Zheng,
The m-plane GaN (1 1¯ 0 0) epilayers have been grown on LiAlO2 (1 0 0) substrate by a two-step growth method using a metal-organic chemical vapor deposition (MOCVD) system. The GaN buffer layer is introduced to overcome the drawbacks of thermal instability of LiAlO2 (LAO), and to relieve the strains due to large thermal mismatch between LAO and GaN. The results of X-ray diffraction (XRD) and polarized Raman scattering spectra demonstrate that the GaN (1 1¯ 0 0) epilayer is single crystal as the growth ...
Tópico(s): ZnO doping and properties
2006 - Elsevier BV | Journal of Crystal Growth
Li Shen, Hai Xian Wang, Le Zhang, Jun Zhang,
Tópico(s): Synthesis and Characterization of Heterocyclic Compounds
2014 - ASIAN PUBLICATION CORPORATION | Asian Journal of Chemistry
Bing Lin, Xiancheng Zhan, Linli Li, Chengrong Li, Hai-Jun Qi, Jian-Lin Tao,
A step nonisothermal experiment under high oxygen pressure and a computation with optimization for a step nonisothermal experiment on a stability study of drugs are introduced. The kinetics parameters of captopril oxidation in aqueous solution were determined with this method. It is reported that the reaction of captopril solution occurs under either aerobic or anaerobic conditions, giving different products. Then the total rate constant ktotal can be expressed as: ktotal=kanaerobic+kaerobic=Aanaerobic ...
Tópico(s): Free Radicals and Antioxidants
2008 - Pharmaceutical Society of Japan | YAKUGAKU ZASSHI
Jimmy Addison Lee, Jun Cheng, Guozhen Xu, Ee Ping Ong, Beng Hai Lee, Damon Wing Kee Wong, Jiang Liu,
Tópico(s): Advanced Image and Video Retrieval Techniques
2015 - Springer Science+Business Media | Lecture notes in computer science
Ling Wu, Jun‐Hai Yong, Youwei Zhang, Li Zhang,
A Chaikin curve is a subdivision curve. Subdivision begins from an initial control polygonal curve. For each subdivision step, all corners of the polygonal curve are cut off, and a new polygonal curve is thus produced as the input of the next subdivision step. In the limit of subdivision, a Chaikin curve is created. In this paper, a multi-step subdivision algorithm for generating Chaikin curves is proposed. For an arbitrary positive integer k, the algorithm builds the resultant polygonal curve of ...
Tópico(s): Manufacturing Process and Optimization
2004 - Springer Science+Business Media | Lecture notes in computer science
Tianli Zhang, Chenxu Zhang, Hai‐Peng Ren, Zhong Huang, Na Liu, Jun Feng, Rui Li, Yulong Wu,
Tópico(s): Coal and Coke Industries Research
2024 - Elsevier BV | Journal of Analytical and Applied Pyrolysis
Bing Lin, Xiancheng Zhan, Jian-Lin Tao, Linli Li, Hai-Jun Qi,
A step nonisothermal experiment under high oxygen pressure and a new computation with optimization for step nonisothermal experiment on stability study of drugs was introduced. The kinetics parameters of captopril oxidation in aqueous solution were determined by this method. It is reported that the reaction of captopril solution occurs under either aerobic or anaerobic condition, giving different products. Then the total rate constant ktotal can be expressed as where kanaerobic and kaerobic are ...
Tópico(s): Computational Drug Discovery Methods
2009 - Taylor & Francis | Drug Development and Industrial Pharmacy
The development status of one-step synthesis of dimethyl ether from syngas was summarized.According to the catalytic mechanism, one of the critical influencing factors of the process of one-step synthesis of DME from syngas was elaborated,the other influencing factors were discussed,and some related improving schemes were suggested.
Tópico(s): Catalysts for Methane Reforming
2007 - Taylor & Francis | Energy Engineering
Zhang Shi-jun, Chi Ma, Wen‐Hai Zhang, Ye Liu,
This paper presents a very simple scheme for generating quantum controlled phase-shift gate with only one step by using the two vibrational modes of a trapped ion as the two qubits. The scheme couples two vibration degrees of freedom coupled with a suitable chosen laser excitation via the ionic states.
Tópico(s): Laser-Matter Interactions and Applications
2008 - IOP Publishing | Chinese Physics B
郑海松 ZHENG Hai-song, 魏爱香 WEI Ai-xiang, Jun Liu, 肖志明 XIAO Zhi-ming, 招 瑜 ZHAO Yu,
Tópico(s): Conducting polymers and applications
2019 - Science Press | Chinese Journal of Luminescence
Rong Zeng, Jun‐Long Li, Xiang Zhang, Yanqing Liu, Zhi-Qiang Jia, Hai‐Jun Leng, Qianwei Huang, Yue Liu, Qing‐Zhu Li,
The 6,8-dioxabicyclo[3.2.1]octane (6,8-DOBCO) architecture widely exists in a broad spectrum of bioactive natural products, and the development of efficient and convenient protocols to construct this skeleton remains a challenging task. Here, we report a concise synthetic strategy for the single-step construction of 6,8-DOBCO frameworks from simple vinylethylene carbonates and amine-substituted enones. This protocol features a sequential reaction of N-allylic substitution, Diels–Alder cyclization, ...
Tópico(s): Catalytic C–H Functionalization Methods
2019 - American Chemical Society | ACS Catalysis
Hai‐Jun Su, J. Michael McCarthy,
Abstract This paper formulates the inverse static analysis of planar compliant mechanisms in polynomial form. The goal is to find the equilibrium configurations of the system in response to a known force/moment applied to the mechanism. The geometric constraint of the linkage defines a set of kinematics equations which are combined with equilibrium equations obtained from partial derivatives of the potential-energy function. In order to apply polynomial homotopy solver to these equations, we approximate ...
Tópico(s): Advanced Numerical Analysis Techniques
2005 - American Society of Mechanical Engineers | Journal of Mechanical Design
Hafez Tari, Hai‐Jun Su, Tien-Yien Li,
This paper presents a constrained technique which enables classical homotopy continuation solvers to exclude unwanted solutions from a system of polynomials. It is well known that extraneous and degenerate solutions often appear in polynomial equations derived from kinematics problems. These solutions usually do not have physical meanings and prevent us from understanding the intrinsic feature of the studied problem. Traditionally to exclude these solutions, we have to rely on a tedious post-processing ...
Tópico(s): Advanced Numerical Analysis Techniques
2010 - Elsevier BV | Mechanism and Machine Theory
Zhen Qi, Ulla Vainio, Andreas Kornowski, Martin Ritter, Horst Weller, Hai‐Jun Jin, Jörg Weißmüller,
A preparation strategy is developed for monolithic samples of nanoporous gold with a hierarchical structure comprising two nested networks of solid “ligaments” on distinctly different structural length scales. The electrochemical dealloying protocol achieves a large retention of less noble element in a first corrosion step, thereby allowing an extra corrosion step which forms a separate structural hierarchy level. The beneficial impact of adding Pt to the Ag–Au master alloys that are more conventionally ...
Tópico(s): Supercapacitor Materials and Fabrication
2015 - Wiley | Advanced Functional Materials
Tao Sheng, Hai‐Jun Zhang, Ming Shang, Chi He, Julien C. Vantourout, Phil S. Baran,
An operationally simple method to employ nonactivated carboxylic acids as alkylating agents in the N-alkylation of heterocycles is reported through an electrochemically driven anodic decarboxylative process. A wide substrate scope across a range of heterocycles is demonstrated along with a series of applications that significantly reduce the step count required to access such medicinally relevant structures.
Tópico(s): Asymmetric Hydrogenation and Catalysis
2020 - American Chemical Society | Organic Letters
Hai-Jun Zhang, Li Yuan-Le, Haili Zhang,
In order to ensure the smooth progress of sports events and reduce the possibility of risk accidents, a risk early warning safety model of sports events based on BP neural network and fuzzy theory is established, which has great advantages. The establishment of the model is divided into five steps: (1) using BP neural network as the basic network structure to obtain the fuzzy data; (2) using fuzzy theory to form the eigenvalue matrix; (3) optimizing the evaluation of the early waiting warning data; ( ...
Tópico(s): E-commerce and Technology Innovations
2019 - Elsevier BV | Safety Science
Anup V. Sanchela, Mian Wei, Joonhyuk Lee, Gowoon Kim, Hyoungjeen Jeen, Bin Feng, Yuichi Ikuhara, Hai Jun Cho, Hiromichi Ohta,
Transparent oxide semiconductors (TOSs) showing both high visible transparency and high electron mobility have attracted great attention towards the realization of advanced optoelectronic devices. La-doped BaSnO3 (LBSO) is one of the most promising TOSs because its single crystal exhibits a high electron mobility. However, in the LBSO films, it is very hard to obtain high mobility due to the threading dislocations, which are originated from the lattice mismatch between the film and the substrate. ...
Tópico(s): ZnO doping and properties
2019 - Royal Society of Chemistry | Journal of Materials Chemistry C
Yuan Gao, Xiguang Huang, Ishan Singh Mann, Hai‐Jun Su,
Abstract In this paper, we present a novel compliant robotic gripper with three variable stiffness fingers. While the shape morphing of the fingers is cable-driven, the stiffness variation is enabled by layer jamming. The inherent flexibility makes compliant gripper suitable for tasks such as grasping soft and irregular objects. However, their relatively low load capacity due to intrinsic compliance limits their applications. Variable stiffness robotic grippers have the potential to address this ...
Tópico(s): Advanced Sensor and Energy Harvesting Materials
2020 - ASM International | Journal of Mechanisms and Robotics
Sayemul Islam, Xiaolei Song, Eric T. Choi, Jungkwun Kim, Liu Hai-jun, Albert Kim,
Endovascular aneurysm repair (EVAR) is an established and reliable surgical treatment of abdominal aortic aneurysm (AAA), where a covered stent is implanted to prevent blood flow in the aneurysm sac. Although current EVAR is an effective technique, it requires long-term monitoring for the post-operative complications (e.g., endoleak, stent occlusion), which usually requires expensive radiologic imaging techniques such as ultrasonography, computed tomography (CT), or magnetic resonance imaging (MRI). ...
Tópico(s): Peripheral Artery Disease Management
2020 - Institute of Electrical and Electronics Engineers | IEEE Access
Siyang Song, Yu She, Junmin Wang, Hai‐Jun Su,
Abstract Variable stiffness robots may provide an effective way of trading-off between safety and speed during physical human–robot interaction. In such a compromise, the impact force reduction capability and maximum safe speed are two key performance measures. To quantitatively study how dynamic parameters such as mass, inertia, and stiffness affect these two performance measures, performance indices for impact force reduction capability and maximum speed of variable stiffness robots are proposed ...
Tópico(s): Robot Manipulation and Learning
2020 - ASM International | Journal of Mechanisms and Robotics