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Chinese Physics Letters 2013年第2期30卷 94-98页

作者： SHI Ying-Long DONG Chen-Zhong FRITZSCHE stephan ZHANG Deng-Hong XIE Lu-You Key Laboratory of Atomic and Molecular Physics&Functional Materials of Gansu Province College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070 College of Physics and Information Science Tianshui Normal UniversityTianshui 741001 GSI Helmholtzzentrum für Schwerionenforschung Darmstadt D-64291Germany

The angular distribution and polarization of the x-ray photoemission of highly charged helium-like ions is studied following the K-LL dielectronic recombination of initially hydrogen-like *** is carried out within the framework of the density matrix theory combined with the multiconfiguration Dirac-Fock *** is paid to magnetic sublevel alignment in the resonant intermediate state and to its nonuniform radiative decay *** is shown that the Breit interaction between the incident and target electrons plays a significant role for the alignment of the resonant state and thus causes a substantial change in the x-ray emission characteristic,when compared to the incorporation of only the(non-relativistic)Coulomb *** most prominent difference in alignment parameter is found in the 2s2p_(1/2) J=1 resonant state for a wide range of atomic numbers from 9 to *** this resonant state of helium-like ions,the Breit interaction becomes significant for ions with nuclear charge Z~30 already.

关键词： interaction. resonant alignment

Heteronuclear Efimov resonances in ultracold quantum gases

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National Science Review 2016年第2期3卷 174-188页

作者： Juris Ulmanis stephan Hfner Eva D.Kuhnle Matthias Weidemller Physikalisches Institut Universitt Heidelberg Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics and CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum PhysicsUniversity of Science and Technology of China

The Efimov scenario is a universal three-body effect addressing many areas of modern quantum *** plays an important role in the transition between few- and many-body physics and has enabled important breakthroughs in the understanding of the universal few-body *** review the basic concepts of the Efimov scenario with specific emphasis on the similarities and differences between homonuclear and heteronuclear *** the latter scenario,the existence of a second,independently tunable interaction parameter enables novel few-body phenomena that are universal and have no counterexamples in the homonuclear *** discuss recent experimental approaches using ultracold atomic gases with magnetically tunable interactions and elucidate the role of short-range interactions in the emergence of universal and non-universal behavior.

关键词： Efimov resonances few-body physics Feshbach resonances ultracold atoms resonant scattering

MAPPING THE DAMAGED ZONE AROUND THE CRACK TIP IN HIGH DENSITY POLYETHYLENE WITH SYNCHROTRON MICROFOCUS SMALL ANGLE X-RAY SCATTERING TECHNIQUE

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Chinese Journal of Polymer Science 2010年第2期28卷 165-170页

作者： Hans-Friedrich Enderle Dieter Lilge stephan V.Roth Rainer Gehrke Jens Rieger 门永锋 Basell Polyolefine GmbH R&D65926 FrankfurtGermany HASYLAB am DESY Notkestr.8522607 HamburgGermany BASF SE Polymer Research67056 LudwigshafenGermany State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences

The structural changes around a crack tip in a high density polyethylene were investigated by means of scanning synchrotron microfocus small-angle X-ray scattering technique. The scattering data confirm the process of craze structure development near a crack tip based on the evolution of voids. In addition, it was found that the main stress in the plastic zone near a crack tip exhibited a gradient distribution with respect to its strength and direction. The whole damaged area showed a strain distribution indicating a flow behavior toward the crack tip.

关键词： High density polyethylene Microfocus SAXS Crack tip Voids.

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数字变革时代的学校设计

中国教育信息化 2024年第8期30卷 3-12页

作者：斯蒂芬·格哈德·胡贝尔徐凤洁陈丹瑞士楚格师范大学教育管理与经济研究所瑞士楚格6300 北京外国语大学北京100089 北京联合大学北京100101

在数字变革时代,需利用数字技术进一步推进学校工作,并在教育使命的框架内,培养学生适应数字世界的技能。鉴于此,探讨数字变革时代如何进行学校设计具有重要意义。新冠疫情是学校数字变革的助推器。学校管理者与教职工在应对数字变革中... 详细信息

在数字变革时代,需利用数字技术进一步推进学校工作,并在教育使命的框架内,培养学生适应数字世界的技能。鉴于此,探讨数字变革时代如何进行学校设计具有重要意义。新冠疫情是学校数字变革的助推器。学校管理者与教职工在应对数字变革中发挥着重要作用,可以保障和推进学校工作的进一步发展。基于对持续、优化和创新三个方面的整合,通过学校设计行为模型,为数字教育、学习和学校设计提供理论框架。在实践检验和学校设计行动模型的基础上,提出前提、建议、概括性主张及其包含的主题范围。随后,根据经验水平和学校类型,对数字变革、学校和教育的关系进行解析,阐明学校领导自身专业化的各个方面,探讨数字化和行政管理的潜力,概述网络在数字化中的重要性,并倡导在数字变革方面要通过正确的方式做正确的事,逐步在持续、创新和优化之间取得平衡,以促进学校的高质量发展。

关键词：学校设计行为模型数字化数字变革教育数字化

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Prevalence of autoantibodies and the risk of autoimmune thyroid disease in children with chronic hepatitis C virus infection treated with interferon-α

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World Journal of Gastroenterology 2006年第36期12卷 5787-5792页

作者： stephan Gehring Ulrike Kullmer Sabine Koeppelmann Patrick Gerner Philip Wintermeyer Stefan Wirth The Liver Research Center Department of Medicine Rhode Island Hospital and Brown Medical School Providence Rhode Island USA and Kinderklinik der Johannes-Gutenberg-Universitt Mainz Germany Kinderklinik der Johannes-Gutenberg-Universitt Mainz Germany Zentrum für Kinder-und Jugendmedizin HELIOS Klinikum Wuppertal Witten-Herdecke-University Germany

AIM： To evaluate the prevalence of autoantibodies in chronic hepatitis C virus （HCV）-infected children focusing on thyroid ***： We investigated the prevalence of autoantibodies in 123 chronic HCV-infected children before, during and after monotherapy with interferon-alpha （IFN-α） or combined treatment with interferon-α or peginterferon-α and ribavirin. Besides antibodies against smooth muscle （SMA）, nuclei （ANA）, and liver/kidney microsomes （1KM）, the incidence of antithyroid peroxidase antibodies as well as thyroid function parameters （TSH, FT3 and FT4） were ***： We found that 8% of children had autoantibodies before treatment. During treatment, 18% of children were found positive for at least one autoantibody; 15.5% of children developed pathologic thyroid values during IFN-α treatment compared to only one child before therapy. Six children had to be substituted while developing laboratory signs of ***： Our data indicate a strong correlation between interferon-α treatment and autoimmune phenomena, notably the emergence of thyroid antibodies. The fact that some children required hormone replacement underlines the need of close monitoring in particularly those who respond to therapy and have to be treated for more than 6 mo.

关键词： Hepatitis C treatment Children Thyroiddysfunction Autoantibodies

Milestones in Molecular Dynamics Simulations of Single-Walled Carbon Nanotube Formation: A Brief Critical Review

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Nano Research 2009年第10期2卷 755-767页

作者： stephan Irle Yasuhito Ohta Yoshiko Okamoto Alister JPage Ying Wang Keiji Morokuma Fukui Institute for Fundamental Chemistry Kyoto UniversityKyoto 606-8103Japan Institute for Advanced Research and Department of Chemistry Nagoya UniversityNagoya 464-8602Japan Cherry L.Emerson Center for Scientic Computation and Department of Chemistry Emory UniversityAtlantaGA 30322USA Department of Chemistry Nara Women’s UniversityNara 630-8506Japan

We present a brief review of the most important efforts aimed at simulating single-walled carbon nanotube(SWNT)nucleation and growth processes using molecular dynamics(MD)techniques reported in the *** simulations allow the spatio-temporal movement of atoms during nonequilibrium growth to be ***,it is hoped that a successful MD simulation of the entire SWNT formation process will assist in the design of chirality-specic SWNT synthesis *** give special consideration to the role of the metal catalyst particles assumed in standard theories of SWNT formation,and describe the actual metal behavior observed in the reported MD simulations,including our own recent quantum chemical MD *** is concluded that the use of a quantum potential is essential for a qualitatively correct description of the catalytic behavior of the metal cluster,and that carbide formation does not seem to be a necessary requirement for nucleation and growth of SWNTs according to our most recent quantum chemical MD simulations.

关键词： Carbon nanotubes transition metal catalysis molecular dynamics reactive forceelds quantum chemistry

Power flow forecasts at transmission grid nodes using Graph Neural Networks

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Energy and AI 2023年第4期14卷 189-200页

作者： Dominik Beinert Clara Holzhuter Josephine M.Thomas stephan Vogt Fraunhofer Institute for Energy Economics and Energy System Technology IEE Joseph-Beuys-Straße 8Kassel34117Germany Intelligent Embedded Systems Lab University of KasselWilhelmshöher Allee 73Kassel34121Germany

The increasing share of renewable energy in the electricity grid and progressing changes in power consumption have led to fluctuating,and weather-dependent power *** ensure grid stability,grid operators rely on power forecasts which are crucial for grid calculations and *** this paper,a Multi-Task Learning approach is combined with a Graph Neural Network(GNN)to predict vertical power flows at transformers connecting high and extra-high voltage *** proposed method accounts for local differences in power flow characteristics by using an Embedding Multi-Task Learning *** use of a Bayesian embedding to capture the latent node characteristics allows to share the weights across all transformers in the subsequent node-invariant GNN while still allowing the individual behavioral patterns of the transformers to be *** the same time,dependencies between transformers are considered by the GNN architecture which can learn relationships between different transformers and thus take into account that power flows in an electricity network are not independent from each *** effectiveness of the proposed method is demonstrated through evaluation on two real-world data sets provided by two of four German Transmission System Operators,comprising large portions of the operated German transmission *** results show that the proposed Multi-Task Graph Neural Network is a suitable representation learner for electricity networks with a clear advantage provided by the preceding embedding *** is able to capture interconnections between correlated transformers and indeed improves the performance in power flow prediction compared to standard Neural Networks.A sign test shows that the proposed model reduces the test RMSE on both data sets compared to the benchmark models significantly.

关键词： Power flow forecasting Graph Neural Network Graph Convolutional Network Embedding Multi-Task Learning

基于模糊理论的增强型AHP终端选择算法的研究

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高技术通讯 2009年第11期19卷 1124-1130页

作者：张蕾田辉 stephan Steglich 北京邮电大学泛网无线通信教育部重点实验室北京100876 德国FOKUS科学院柏林10589

针对异构无线通信网络的发展趋势及其负载控制的执行,利用复杂系统中端到端重配置管理能力,结合模糊理论中的决策算法,提出了一种基于模糊理论的增强型多目标决策层次分析法(AHP)终端选择算法——AHP-TS,该算法将可重配置系统中的差异... 详细信息

针对异构无线通信网络的发展趋势及其负载控制的执行,利用复杂系统中端到端重配置管理能力,结合模糊理论中的决策算法,提出了一种基于模糊理论的增强型多目标决策层次分析法(AHP)终端选择算法——AHP-TS,该算法将可重配置系统中的差异性和不精确性模糊化为相应隶属函数的隶属度,以实现更加及时有效的负载调控,进一步提升系统性能。理论分析和仿真所得出的结果均显示,在平衡可重配置系统中具有重叠覆盖的异构无线通信网络间的业务负荷中,此算法可以更好地实现不同负载条件下系统性能与管理开销间的折中,提高用户满意度。

关键词：异构无线接入技术端到端重配置负载控制终端选择算法多目标模糊决策

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The coronary computed tomography angiogram: from the basics to advanced interpretation

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Journal of Geriatric Cardiology 2006年第1期3卷 35-44页

作者： Tiong Kiam ONG stephan Achenbach Department of Cardiology Jalan Tun Ahmad Zaidi Adruce Kuching Sarawak 93586 Malaysia Department of Internal Medicine Ⅱ (Cardiology) University of Erlangen Nuremberg Germang

　　Introduction　　According to the WHO's World Health Report 2003, 1cardiovascular disease was responsible for 16.7 million deaths annually. As a result, it is now the leading cause of death in developed countries and in many developing countries. Detecting and preventing the progression of coronary artery disease is the target of many pharmaceutical, technological and other scientific programs today. Presently, the main diagnostic tool for evaluating coronary arteries is thc conventional coronary angiogram (CCA).……

关键词： MPR from the basics to advanced interpretation The coronary computed tomography angiogram CTA MDCT oral MIP

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Ecstasy-induced optic disc swelling and consequent visual loss

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International Journal of Ophthalmology(English edition) 2020年第3期13卷 520-522页

作者： Michaela Ramsauer stephan Thurau Siegfried Priglinger Efstathios Vounotrypidis Department of Ophthalmology Ludwig-Maximilians-UniversityMunich 80336Germany

Dear Editor,We present the first reported case of unilateral optic disc swelling with subsequent persistent loss of vision triggered by ecstasy consumption in the case of a young *** is one of the most commonly consumed recreational drugs among young *** main constituent and active substance is 3,4-methylenedioxymethamphetamine(MDMA).

关键词： Ecstasy optic disc swelling visual loss