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政治制度伦理的地位、结构及其历史始端

思想战线 2009年第4期35卷 75-78,84页

作者：杨楹华侨大学哲学研究所

政治制度伦理是整个政治伦理的轴心和关键,是政治伦理的可靠支撑。政治制度伦理可解构为根本制度伦理("元"伦理价值)和派生制度伦理(延伸伦理价值)两个不可分离的维度,由此,构成政治制度伦理自身内在的逻辑。追随政治制度成长的历史,可... 详细信息

政治制度伦理是整个政治伦理的轴心和关键,是政治伦理的可靠支撑。政治制度伦理可解构为根本制度伦理("元"伦理价值)和派生制度伦理(延伸伦理价值)两个不可分离的维度,由此,构成政治制度伦理自身内在的逻辑。追随政治制度成长的历史,可以将政治制度伦理分为前资本主义、资本主义和后资本主义3种范式。现代政治制度伦理是对传统政治制度伦理的超越。

关键词：政治制度伦理元伦理价值历史形态

M-Cross-Validation in Local Median Estimation

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Acta Mathematica Sinica,English Series 2006年第5期22卷 1565-1582页

作者： ying yang Department of Mathematical Sciences Tsinghua University Beijing 100084 P. R. China

M-cross-validation criterion is proposed for selecting a smoothing parameter in a nonparametric median regression model in which a uniform weak convergency rate for the M-cross-validated local median estimate, and the upper and lower bounds of the smoothing parameter selected by the proposed criterion are established. The main contribution of this study shows a drastic difference from those encountered in the classical L2-, L1- cross-validation technique, which leads only to the consistency in the sense of the average. Obviously, our results are novel and nontrivial from the point of view of mathematics and statistics, which provides insight and possibility for practitioners substituting maximum deviation for average deviation to evaluate the performance of the data-driven technique.

关键词： local median estimate cross-validation nonparametric median regression smoothing parameter uniform weak convergency rate

Tactics to optimize conversion-type metal fluoride/sulfide/oxide cathodes toward advanced lithium metal batteries

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Nano Research 2023年第6期16卷 8173-8190页

作者： Dong Yan Hui ying yang ying Bai International Joint Laboratory of New Energy Materials and Devices of Henan Province School of Physics&ElectronicsHenan UniversityKaifeng 475004China Pillar of Engineering Product Development Singapore University of Technology and DesignSingapore 487372Singapore

Considering limited energy density of current lithium metal batteries(LMBs)due to low capacity of traditional intercalation-type cathodes,alternative high-energy cathodes are eagerly *** this regard,conversion-type metal fluoride/sulfide/oxide cathodes have emerged great attention owing to their high theoretical specific capacities,supplying outstanding energy density for advanced ***,their low ionic/electrical conductivities,huge volume changes,sluggish reaction kinetics,and severe side reactions result in quick capacity fading and poor rate capability of *** research efforts on the conversiontype cathodes have brought new insights,as well as effective approaches toward realizing their excellent electrochemical ***,the recent discoveries,challenges,and optimizing strategies including morphology regulation,phase structure engineering,surface coating,heterostructure construction,binder functionalization,and electrolyte design,are reviewed in ***,perspectives on the conversion-type metal fluoride/sulfide/oxide cathodes in LMBs are *** is believed that the conversion-type cathodes hold a promising future for the next-generation LMBs with high energy density.

关键词： conversion-type cathodes electrochemical performances optimizing strategies lithium metal batteries

A result on quasi k-connected graphs

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Applied Mathematics(A Journal of Chinese Universities) 2015年第2期30卷 245-252页

作者： yang ying-qiu School of Mathematics Beijing Institute of Technology School of Mathematics and Physics Anshun University

Let G be a k-connected graph, and T be a subset of V（G）. If G-T is not connected,then T is said to be a cut-set of G. A k-cut-set T of G is a cut-set of G with │T│=k. Let T bea k-cut-set of a k-connected graph G. If G - T can be partitioned into subgraphs G1 and G2such that │G1│≥ 2, │G2│ 〉 2, then we call T a nontrivial k-cut-set of G. Suppose that G is a（k-1）-connected graph without nontrivial （k - 1）-cut-set. Then we call G a quasi k-connectedgraph. In this paper, we prove that for any integer k ≥ 5, if G is a k-connected graph withoutK4-, then every vertex of G is incident with an edge whose contraction yields a quasi k-connectedgraph, and so there are at least │V（G）│/2 edges of G such that the contraction of every member ofthem results in a quasi k-connected graph.

关键词： Component k-connected graph quasi k-connected graph.

Representations of hypergraph states with neural networks

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Communications in Theoretical Physics 2021年第10期73卷 97-106页

作者： ying yang Huaixin Cao School of Mathematics and Information Technology Yuncheng UniversityYuncheng 044000China School of Mathematics and Statistics Shaanxi Normal UniversityXi'an 710119China

The quantum many-body problem(QMBP) has become a hot topic in high-energy physics and condensed-matter physics. With an exponential increase in the dimensions of Hilbert space, it becomes very challenging to solve the QMBP, even with the most powerful computers. With the rapid development of machine learning, artificial neural networks provide a powerful tool that can represent or approximate quantum many-body states. In this paper, we aim to explicitly construct the neural network representations of hypergraph states. We construct the neural network representations for any k-uniform hypergraph state and any hypergraph state,respectively, without stochastic optimization of the network parameters. Our method constructively shows that all hypergraph states can be represented precisely by the appropriate neural networks introduced in [Science 355(2017) 602] and formulated in [Sci. ***. Astron. 63(2020) 210312].

关键词： hypergraph state neural network quantum state representation

Electrochemical mechanism of high Na-content P2-type layered oxides for sodium-ion batteries

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Rare Metals 2020年第4期39卷 332-334页

作者： ying yang Wei-Feng Wei State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China

The development on capacity and structure issues of P2-type cathode has so far focused on ion-doping/substitution *** a recent report published in Journal of the American Chemical Society,Hu and colleagues demonstrate... 详细信息

关键词： Na-content P2-type sodium-ion batteries structure

Digraph states and their neural network representations

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Chinese Physics B 2022年第6期31卷 183-191页

With the rapid development of machine learning,artificial neural networks provide a powerful tool to represent or approximate many-body quantum *** was proved that every graph state can be generated by a neural ***,we introduce digraph states and explore their neural network representations(NNRs).Based on some discussions about digraph states and neural network quantum states(NNQSs),we construct explicitly an NNR for any digraph state,implying every digraph state is an *** obtained results will provide a theoretical foundation for solving the quantum manybody problem with machine learning method whenever the wave-function is known as an unknown digraph state or it can be approximated by digraph states.

关键词： digraph state neural network quantum state representation

Neural network representations of quantum many-body states

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Science China(Physics,Mechanics & Astronomy) 2020年第1期63卷 55-69页

作者： ying yang HuaiXin Cao ZhanJun Zhang School of Mathematics and Information Science Shaanxi Normal UniversityXi'an 710119China School of Mathematics and Information Technology Yuncheng UniversityYuncheng 044000China School of Physics and Materials Science Anhui UniversityHefei 230039China

Machine learning is currently the most active interdisciplinary field having numerous applications; additionally, machine-learning techniques are used to research quantum many-body problems. In this study, we first propose neural network quantum states(NNQSs) with general input observables and explore a few related properties, such as the tensor product and local unitary operation. Second, we determine the necessary and sufficient conditions for the representability of a general graph state using normalized NNQS. Finally, to quantify the approximation degree of a given pure state, we define the best approximation degree using normalized NNQSs. Furthermore, we observe that some N-qubit states can be represented by a normalized NNQS, such as separable pure states, Bell states and GHZ states.

关键词： representation neural network quantum state graph state

Heat Transfer Effectiveness of Three-Fluid Separated Heat Pipe Exchanger

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Journal of Thermal Science 2011年第1期20卷 64-69页

作者： Chengming Shi yang Wang ying yang Quan Liao College of Power Engineering Chongqing University Chongqing 400044 China

A heat transfer model for three-fluid separated heat pipe exchanger was analyzed,and the temperature transfer matrix for general three-fluid separated heat exchanger working in parallel-flow or counter-flow mode was *** was found that the forms of temperature transfer matrix are similar for heat pipe rows with equal or different heat transfer surface ***,by using the temperature transfer matrix of the heat pipe exchanger,the relationship between heat transfer effectiveness θ 1,θ 2 and M,NTU,U,Δt i were derived for the exchanger operating in parallel-flow or counter-flow mode,and a simple special example was adopted to demonstrate the correctness of these relationships.

关键词： heat pipes three-fluid heat exchangers heat transfer effectiveness temperature transfer matrix