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Search Results: 1 - 10 of 43951 matches for " Yaohua Wu "
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Allocating Collaborative Profit in Less-than-Truckload Carrier Alliance  [PDF]
Peng Liu, Yaohua Wu, Na Xu
Journal of Service Science and Management (JSSM) , 2010, DOI: 10.4236/jssm.2010.31018
Abstract: International Financial Crisis has made the less-than-truckload (LTL) industry face with severe challenges of survival and development. More and more small and medium-sized LTL carriers choose to collaborate as the potential savings are large, often in the range 5–15%. A key question is how to distribute profits/savings among the participants. Since every LTL carriers are guided by their own self-interests and their contributions to the collaboration are quite different, the proposed allocation method should be a collectively and individually desirable solution. In this paper, we firstly analyze the profit opportunities from collaboration and present mechanisms to realize these benefits by two illustrative examples. Based on the cooperative game theory, we formulate the LTL collaboration game and discuss the well-known profit allocation concepts including Proportional Allocation, Shapley value and Nucleolus. We then propose a new al-location method named Weighted Relative Savings Model (WRSM) which is in the core and minimizes the maximum difference between weighted relative savings among the participants. Simulation result for real-life instances shows the effectiveness of WRSM.
Asymptotic efficiency of randomly weighted bootstrap for linear models
Yaohua Wu,Lincheng Zhao
Chinese Science Bulletin , 1998, DOI: 10.1007/BF02898942
Abstract: This note discusses the method of randomly weighted bootstrap to derive the approximation of M-estimates in linear models, and shows that the approximation is asymptotically valid under some mild conditions.
Asymptotic efficiency of randomly weighted bootstrap for linear models

Yaohua Wu,Lincheng Zhao,

科学通报(英文版) , 1998,
Abstract: This note discusses the method of randomly weighted bootstrap to derive the approximation of M-estimates in linear models, and shows that the approximation is asymptotically valid under some mild conditions.
Newton’s Bucket Experiment from Kantian Perspective  [PDF]
Yaohua Zhu
Open Journal of Philosophy (OJPP) , 2018, DOI: 10.4236/ojpp.2018.85030
Abstract: Newton’s absolute pace-time view is the basis of his classical mechanics, and his description of relative motion is based on absolute space. However, the existence of this absolute space has been questioned by the academic circles. In order to defend its theoretical foundation, Newton established a famous bucket experiment to prove the existence of absolute space. But his experiment was also questioned, and the experiment is also divided into different opinions. This paper hopes to find the answer to the question from Kantian perspective.
Modeling and Optimization of Inventory-Distribution Routing Problem for Agriculture Products Supply Chain
Li Liao,Jianfeng Li,Yaohua Wu
Discrete Dynamics in Nature and Society , 2013, DOI: 10.1155/2013/409869
Abstract:
Approximation to the Distribution of M-Estimates in Ranked-Set Sampling by Randomly Weighted Bootstrap
序集抽样中$M$估计分布的随机加权逼近

WU Yaohua,LIU Chiyu,
吴耀华
,刘驰宇

系统科学与数学 , 2009,
Abstract: Ranked-Set Sampling(RSS) is a sampling method when a set of sampling units drawn from the population can be ranked by certain means rather cheaply without the actual measurement of the variable of interest which is costlyand/or time consuming. This paper is concerned with the consistency and asymptotic normality on the RSS M-estimates and approximation to its distribution by randomly weighted bootstrap.
ASYMPTOTIC NORMALITY OF QUASI-MAXIMUM LIKELIHOOD ESTIMATOR IN GENERALIZED LINEAR MODELS
广义线性回归拟似然估计的渐近正态性

Gao Qibing,Wu Yaohua,
高启兵
,吴耀华

系统科学与数学 , 2005,
Abstract: This paper studies the quasi-likelihood equation $\sum\limits_{i=1}^{n}x_i(y_i-\mu(x_i^{'}\beta))=0.$ Under certain conditions , we obtain the asymptotic normality of the quasi-maximum likelihood estimate $\widehat{\beta}_n$. Furthermore, we obtain an asymptotic normality result of $\beta_0$, which can be used in the practical statistical inference.
Effects of Electropulsing Induced Microstructural Changes on THz-Reflection and Electrical Conductivity of Al-Doped ZnO Thin-Films  [PDF]
Yaohua Zhu, Weien Lai
Journal of Surface Engineered Materials and Advanced Technology (JSEMAT) , 2016, DOI: 10.4236/jsemat.2016.63010
Abstract: Electropulsing induced phase transformation and crystal orientation change and their effects on electrical conductivity, THz reflection and surface roughness of thin-films of Al2O3 (2 wt%) doped ZnO were studied using XRD, SEM, AFM and Thz spectroscopy techniques. AZO-2 thin-films showed an effective response in THz spectroscopy under electropulsing. Electropulsing induced circular preferred crystal orientation changes and phase transformations were observed. The preferred crystal orientation changes accompanying decrease in stress and the secondary phase precipitation favored enhancing conductivity and THz reflection of the AZO-2 thin-films. After adequate electropulsing, both THz reflection and electrical conductivity of the thin-films were enhanced by 22.8% and 6.8%, respectively; meanwhile surface roughness reduced. The property responses of electropulsing are discussed from point view of microstructural change and dislocation dynamics.
The Researches on Calculating Method of Insurance Premium of Residential Mortgage Loan
Yaohua SHANG
Canadian Social Science , 2011, DOI: 10.3968/j.css.1923669720110704.z50
Abstract: As an effective means to stir up residential consumption, residential mortgage loan insurance is developing very quickly in recent years. However, there are still some inevitable risks, how to calculate insurance rate has been a magnitude task for insurance companies. Based on discrimination between residential mortgage loan insurance and other insurances, the thesis analyze insurance structures of United States, we find that insurance institute in USA can often establish its corresponding insurance structure (include insurance payment mode, number of insurance rate, disposal method when pre-payoff) according to clients’ specific circs (such as sum of loan, term of loan, loan to value), so the controlling of risk of regional mortgage loan insurance is become easy, the rights and interests of insurance institute can be well protected. On the contrary, most insurance companies in China adopt single insurance structure, they require all clients must pay insurance by means of once-payoff method, and they will not send back insurance when the client pre-payoff. This method have some problems, on the one hand it is not benefit to controlling risk of insurance business, on the other hand, it is not benefit to exploit market because it cannot make clients to choice appropriate insurance project according to their specific circs. So insurance structure of regional mortgage loan in China will transit from singularity to diversity in the future. It means that insurance payment mode will include 2 types: once-payoff and annual payment; when borrower want to pre-payoff it can be decided into 2 types: insurance sending back and not sending back, so we will have 4 kinds of insurance structures. on the basis of it, we present new insurance structures which suit for china, and then present a new calculating method which can calculate insurance premium in different insurance structures by using expected return equals the expected loss. Key words: Insurance premium structure; Insurance premium calculation; Residential mortgage loan Résumé: C’est un moyen efficace pour attiser la consommation résidentielle, l'assurance prêt hypothécaire résidentielle se développe très rapidement depuis ces dernières années. Cependant, il y a encore quelques risques inévitables, comment calculer le taux d’assurance a été une tache grandeur pour les compagnies d’assurance. Basé sur la discrimination entre l’assurance prêt hypothécaire résidentiel et d’autres assurances, la thèse d’analyser les structures d’assurance des états-Unis, nous constatons que l’Institut d’assurance aux Etats-Unis peu
Quantum information and many body physics with cold atoms
XiaoFei Zhang,YaoHua Chen,GuoCai Liu,Wei Wu,Lin Wen,WuMing Liu
Chinese Science Bulletin , 2012, DOI: 10.1007/s11434-012-5095-1
Abstract: We review our recent theoretical advances in quantum information and many body physics with cold atoms in various external potential, such as harmonic potential, kagome optical lattice, triangular optical lattice, and honeycomb lattice. The many body physics of cold atom in harmonic potential is investigated in the frame of mean-field Gross-Pitaevskii equation. Then the quantum phase transition and strongly correlated effect of cold atoms in triangular optical lattice, and the interacting Dirac fermions on honeycomb lattice, are investigated by using cluster dynamical mean-field theory and continuous time quantum Monte Carlo method. We also study the quantum spin Hall effect in the kagome optical lattice.
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