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npj Computational Materials 2017年第1期3卷 333-349页

作者： Yulan Li Shenyang Hu Xin Sun marius stan Pacific Northwest National Laboratory 902 Battelle BoulevardRichlandWA 99352USA Argonne National Laboratory 9700 South Cass AvenueLemontIL 60439USA

Complex microstructure changes occur in nuclear fuel and structural materials due to the extreme environments of intense irradiation and high *** paper evaluates the role of the phase field method in predicting the microstructure evolution of irradiated nuclear materials and the impact on their mechanical,thermal,and magnetic *** paper starts with an overview of the important physical mechanisms of defect evolution and the significant gaps in simulating microstructure evolution in irradiated nuclear ***,the phase field method is introduced as a powerful and predictive tool and its applications to microstructure and property evolution in irradiated nuclear materials are *** review shows that(1)Phase field models can correctly describe important phenomena such as spatial-dependent generation,migration,and recombination of defects,radiation-induced dissolution,the Soret effect,strong interfacial energy anisotropy,and elastic interaction;(2)The phase field method can qualitatively and quantitatively simulate two-dimensional and three-dimensional microstructure evolution,including radiation-induced segregation,second phase nucleation,void migration,void and gas bubble superlattice formation,interstitial loop evolution,hydrate formation,and grain growth,and(3)The Phase field method correctly predicts the relationships between microstructures and *** final section is dedicated to a discussion of the strengths and limitations of the phase field method,as applied to irradiation effects in nuclear materials.

关键词： properties irradiated phase

Machine-learned interatomic potentials by active learning:amorphous and liquid hafnium dioxide

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npj Computational Materials 2020年第1期6卷 803-810页

作者： Ganesh Sivaraman Anand Narayanan Krishnamoorthy Matthias Baur Christian Holm marius stan Gábor Csányi Chris Benmore Álvaro Vázquez-Mayagoitia Leadership Computing Facility Argonne National LaboratoryArgonneIL 60439USA Institute for Computational Physics Universität StuttgartAllmandring 3Stuttgart 70569Germany Helmholtz-Institute Münster:Ionics in Energy Storage(IEK-12) Forschungszentrum Jülich GmbHCorrensstrasse 46Münster 48149Germany Applied Materials Division Argonne National LaboratoryArgonneIL 60439USA Department of Engineering University of CambridgeTrumpington StreetCambridge CB21PZUK X-ray Science Division Argonne National LaboratoryArgonneIL 60439USA Computational Science Division Argonne National LaboratoryArgonneIL 60439USA

We propose an active learning scheme for automatically sampling a minimum number of uncorrelated configurations for fitting the Gaussian Approximation Potential(GAP).Our active learning scheme consists of an unsupervised machine learning(ML)scheme coupled with a Bayesian optimization technique that evaluates the GAP *** apply this scheme to a Hafnium dioxide(HfO2)dataset generated from a“melt-quench”ab initio molecular dynamics(AIMD)*** results show that the active learning scheme,with no prior knowledge of the dataset,is able to extract a configuration that reaches the required energy fit ***,molecular dynamics(MD)simulations performed using this active learned GAP model on 6144 atom systems of amorphous and liquid state elucidate the structural properties of HfO2 with near ab initio precision and quench rates(i.e.,1.0 K/ps)not accessible via *** melt and amorphous X-ray structural factors generated from our simulation are in good agreement with *** addition,the calculated diffusion constants are in good agreement with previous ab initio studies.

关键词： amorphous dioxide scheme

Highly luminescent europium and terbium complexes based on succinimide and N-hydroxysuccinimide

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Journal of Rare Earths 2012年第5期30卷 401-407页

作者： Corneliu Sergiu stan Ioan Rosca Daniel Sutiman marius Sebastian Secula Faculty of Chemical Engineering and Environmental Protection Gheorghe Asachi Technical University of Iasi73 D.Mangeron700050IasiRomania

The preparation of two highly luminescent europium（Ill） and terbium（Ill） complexes with succinimide （SI） and N-hydroxysuccinimide （NHSI） were reported, which were further investigated through elemental chemical analysis, thermal analysis, FT-IR, powder X-ray diffraction, SEM and fluorescence spectroscopy. Data collected through these analysis revealed the formation of the Eu（III） and Th（III） complexes with the above mentioned ligands at a metal to ligand （M：L） molar ratio of 1：3. Interesting conclusions regarding the effi- cient sensitization through the coordination site of the lanthanide luminescent centers were retained from the photoluminescent spectra inves- tigation. Strong luminescence emission was observed in case of Eu（III）-SI and Tb（III）-NHSI complexes while the corresponding Eu（III）-NHSI and Tb（III）-SI complexes exhibited no photo luminescent properties. Newly obtained luminescent lanthanide complexes may be of particular interest for various applications in optoelectronics.

关键词： lanthanide complex succinimide N-hydroxysuccinimide luminescence rare earths

Reproducibility of deposition and industrial applications of stable superhard nanocomposites

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中国有色金属学会会刊：英文版 2004年第Z1期14卷 19-24页

作者： stan Veprek Department for Chemistry Technical University Munich Lichtenbergstr. 4 D-85747 Garching b. Munich Germany

After a brief introduction regarding the different approaches to superhard coatings we shall concentrate on the problem of the reproducibility of the deposition of superhard and thermally very stable nanocomposites according to the design principle published by Veprek and Reiprich in 1995. It will be shown that either the choice of inappropriate deposition conditions, in contradiction to our design principle, or impurities in the coatings are the reason for the lack of reproducibility of our earlier results by many other workers. We shall also briefly summarize the recent industrial applications.

关键词： superhard nanocomposite reproducibility of deposition industrial application

OPTIMAL HIERARCHY STRUCTURES FOR MULTI-ATTRIBUTE-CRITERIA DECISIONS

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Journal of Systems Science & Complexity 2009年第2期22卷 228-242页

作者： stan LIPOVETSKY GfK Custom Research North America

A problem of a hierarchy structure optimization is *** structures arewidely used in the Analytic Hierarchy Process,conjoint analysis,and various other methods of multiplecriteria decision *** problem consists in finding a structure that needs a minimum number ofpair comparisons for a given total number of the *** an optimal hierarchy,the minimumefforts are needed for eliciting data and synthesizing the local preferences across the hierarchy to getthe global priorities or *** estimation techniques are developed and numerical *** and numerical results suggest optimal ways of priority evaluations for practicalmanagerial decisions in a complex environment.

关键词： Analytic Hierarchy Process conjoint analysis hierarchy optimization pair comparisons.

Existence of Positive Solutions to Semipositone Singular Dirichlet Boundary Value Problems

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Acta Mathematica Sinica,English Series 2006年第6期22卷 1891-1914页

作者： Svatoslav stan■K Department of Mathematical Analysis Faculty of SciencePalack■University

The paper presents the conditions which guarantee that for some positive value of μ there are positive solutions of the differential equation （Ф（x＇））＇＋μQ（t, x, x＇） = 0 satisfying the Dirichlet boundary conditions x（0） = x（T） = 0. Here Q is a continuous function on the set [0, T] × （0, ∞） ~ （R ／ {0}） of the semipositone type and Q is singular at the value zero of its phase variables.

关键词： existence positive solution semipositone singular problem Dirichlet boundary conditions Ф-Laplacian

A cognitive model＇s view of animal cognition

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Current Zoology 2011年第4期57卷 499-513页

作者： Sidney D'MELLO stan FRANKLIN Department of Psychology University of Memphis Memphis TN 38152 USA Institute of Intelligent Systems University of Memphis Memphis TN 38152 USA

Although it is a relatively new field of study, the animal cognition literature is quite extensive and difficult to synthesize. This paper explores the contributions a comprehensive, computational, cognitive model can make toward organizing and assimilating this literature, as well as toward identifying important concepts and their interrelations. Using the LIDA model as an example, a framework is described within which to integrate the diverse research in animal cognition. Such a framework can provide both an ontology of concepts and their relations, and a working model of an animal＇s cognitive processes that can compliment active empirical research. In addition to helping to account for a broad range of cognitive processes, such a model can help to comparatively assess the cognitive capabilities of different animal species. After deriving an ontology for animal cognition from the LIDA model, we apply it to develop the beginnings of a database that maps the cognitive facilities of a variety of animal species. We conclude by discussing future avenues of research, particularly the use of computational models of animal cognition as valuable tools for hypotheses generation and testing [Current Zoology 57 （4）： 499-513, 2011].

关键词： Cognitive models Computational models LIDA Ontology Taxonomy

Express analysis for prioritization:Best-Worst Scaling alteration to System 1

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Journal of Management Analytics 2020年第1期7卷 12-27页

作者： stan Lipovetsky Minneapolis MinnesotaUSA

The work considers modification of the Best–Worst Scaling(BWS)to the so-called System 1(S1)approach.S1 was described by *** as a spontaneous and automatic reaction by an unconsciousway in which human decision-makers choose among multiple *** of S1 can be seen as a simplified BWS for data eliciting and express analysis of prioritization between many compared *** S1,a respondent picks the items with which she feels“happy”,and those can be one,several,all,or none items in a *** of utilities is performed by multinomial-logit modeling with different optimization criteria which produce parameters of the models and choice probabilities of the *** examples by marketing research data are encouraging and demonstrating that spontaneous choice decisions can make S1 approach very fast,efficient,and convenient for express analysis of items prioritization,especially for big data.

关键词： System 1 BWS max diff MNLutility choice probability prioritization

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山水之间的北国仙境闯入克兰河畔的童话世界

城市地理 2024年第1期 28-37页

作者：涵曦 stan(图) 小黎(图) 涵曦(图) 吕吉敏(图) 跟滕老师去旅行(图) 图虫

在阿勒泰的广袤天地间,穿城而过的克兰河与两岸耸立的将军山、骆驼峰,见证了她的前世今生,各民族的迁徙、融合与发展,铸就了如今的“中国雪都”阿勒泰。

关键词：克兰河骆驼峰童话世界前世今生阿勒泰仙境融合与发展

景观作为缝合都市与建筑的动态模型——斯坦·艾伦访谈

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建筑师 2024年第1期 93-100页

作者：孙志健斯坦·艾伦哥伦比亚大学普林斯顿大学纽约stan Allen Architects事务所

访谈由斯坦·艾伦对景观都市主义理论的研究引入到对景观在建筑与城市学之间关系的探讨,由此展开他近年关注的基础设施都市主义、地景建筑和场域建筑的理念,使景观成为衔接建筑与城市学的动态模型,同时结合当代城市复杂性和景观都市主... 详细信息

访谈由斯坦·艾伦对景观都市主义理论的研究引入到对景观在建筑与城市学之间关系的探讨,由此展开他近年关注的基础设施都市主义、地景建筑和场域建筑的理念,使景观成为衔接建筑与城市学的动态模型,同时结合当代城市复杂性和景观都市主义折射出的问题,提出将城市基础设施作为宏观框架而建筑实体在这片场域中自然生长的设计理念。

关键词：景观基础设施场域城市性实体