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Recent Development in the Space Utility System of China's Manned Space Flight Program

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空间科学学报 2010年第5期30卷 388-391页

作者： Gu Yidong guo jiong General Establishment of Space Science and Application Chinese Academy of Sciences Beijing 100190

This paper briefly introduces the history of China's Manned Space Flight Program and concludes the experiments done since 2008,namely,a small satellite and a material science *** outlook of future Chinese Space Statio... 详细信息

关键词：载人航天计划空间站飞行方案中国科学实验小型卫星

Parameterized Algorithmics for Computational Social Choice:Nine Research Challenges

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Tsinghua Science and Technology 2014年第4期19卷 358-373页

作者： Robert Bredereck Jiehua Chen Piotr Faliszewski jiong guo Rolf Niedermeier Gerhard J.Woeginger the Institut fr Softwaretechnik und Theoretische Informatik TU Berlin Berlin Germany AGH University of Science and Technology Kraków Poland the Cluster of Excellence Multimodal Computing and Interaction Universitt des SaarlandesSaarbrcken Germany the Department of Mathematics and Computer Science TU Eindhoven Eindhoven The Netherlands

Computational Social Choice is an interdisciplinary research area involving Economics, Political Science,and Social Science on the one side, and Mathematics and Computer Science（including Artificial Intelligence and Multiagent Systems） on the other side. Typical computational problems studied in this field include the vulnerability of voting procedures against attacks, or preference aggregation in multi-agent systems. Parameterized Algorithmics is a subfield of Theoretical Computer Science seeking to exploit meaningful problem-specific parameters in order to identify tractable special cases of in general computationally hard problems. In this paper, we propose nine of our favorite research challenges concerning the parameterized complexity of problems appearing in this context. This work is dedicated to Jianer Chen, one of the strongest problem solvers in the history of parameterized algorithmics,on the occasion of his 60 th birthday.

关键词： NP-hard problems parameterized complexity fixed-parameter tractability kernelization exact algorithms voting decision making cake cutting

Prediction calculations for the first criticality of the HTR-PM using the PANGU code

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Nuclear Science and Techniques 2021年第9期32卷 9-15页

作者： Ding She Bing Xia jiong guo Chun-Lin Wei Jian Zhang Fu Li Lei Shi Zuo-Yi Zhang Institute of Nuclear and New Energy Technology(INET) Tsinghua UniversityBeijing 100084China

The high-temperature reactor pebble-bed mod-ule(HTR-PM)is a modular high-temperature gas-cooled reactor demonstration power *** first criticality experiment is scheduled for the latter half of *** performing the first criticality experiment,a prediction calculation was performed using PANGU *** paper presents the calculation details for predicting the HTR-PM first criticality using PANGU,including the input model and parameters,numerical results,and uncertainty *** accuracy of the PANGU code was demonstrated by comparing it with the high-fidelity Monte Carlo solution,using the same input *** should be noted that k eff can be significantly affected by uncertainties in nuclear data and certain input parameters,making the criticality calculation ***,the PANGU is used to pre-dict the critical loading height of the HTR-PM first criti-cality under design conditions,which will be evaluated in the upcoming experiment later this year.

关键词： HTR-PM First criticality Prediction PANGU

Stability of Some Nonlinear Systems With Delay Including Populations Systems

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Communications in Nonlinear Science and Numerical Simulation 1998年第4期3卷 248-252页

作者： Shujuan guo, jiong RUAN, Lijuan LI and Aifen FANG (Department of Mathematics, Fudan University, Shanghai 200433, China) Department of Mathematics Fudan University Shanghai 200433 China

We establish sufficient conditions for asymptotical stability of some nonlinear systems with delay which include populations systems by using Lyapunov ***, we get the results of global stability of these systems when ... 详细信息

关键词： delay populations system asymptotical stability global stability invariable principle

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不连续因子计算强吸收体区域的改进

原子能科学技术 2013年第B06期47卷 33-37页

作者：郭炯李富清华大学核能与新能源技术研究院北京100084

在球床高温气冷堆控制棒计算过程中,采用局部均匀化和不连续因子修正的扩散方法可取得较好的计算效果,但对具有强吸收性的吸收球区域的效果相对较差。经研究发现,在强吸收体模型中,强吸收体对附近石墨区域的中子通量分布仍具有较大影响... 详细信息

在球床高温气冷堆控制棒计算过程中,采用局部均匀化和不连续因子修正的扩散方法可取得较好的计算效果,但对具有强吸收性的吸收球区域的效果相对较差。经研究发现,在强吸收体模型中,强吸收体对附近石墨区域的中子通量分布仍具有较大影响,体现出扩散方法对强吸收体的不适应。因此,本文提出改进方案,不但计算吸收体区域边界处的不连续因子,且计算临近石墨区域的边界不连续因子。数值计算结果表明,改进方案可改善计算精度,在扩散计算框架下可达到精细结构的输运计算精度。

关键词：控制棒不连续因子扩散方程强吸收体

Classification and management of the tandem ossification of the posterior longitudinal ligament and flaval ligament

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Chinese Medical Journal 2009年第2期122卷 219-224页

作者： guo jiong-jiong YANG Hui-lin Kenneth M.C. Cheung TANG Tian-si Keith D.K. Luk Department of Orthopaedics the First Affiliated Hospital of Soochow University Suzhou Jiangsu 215006 China Department of Orthopaedics and Traumatology the University of Hong Kong Hong Kong SAR China

Objective To provide appropriate guidelines for treatment of tandem ossification of the posterior longitudinal ligament （OPLL） and flaval ligament （OFL）. Data sources Published articles about OPLL and OFL were selected using Medline and Embase electronic databases. Study selection An English literature search from January 1980 to December 2006 was conducted. Because many reported cases were incorporated in OFL studies, the key words for search were OFL or OFL and OPLL. The first step revealed 93 studies of which 13 reports of tandem OPLL and OFL （tandem ossification） were selected. Results All studies were case series or case report and advocated that the primary therapy for tandem ossification should be operative. The clinical outcomes of surgery were evaluated in most reports, predominantly using the JOA scores. Gender is the only factor which has prognostic value. A higher proportion of women was found in the failure group A two- stage classification of tandem ossification was developed to relate diagnosis to outcome. Conclusions All patients with suspected ossification of the spinal ligaments should undergo routine MRI screening of the whole spine. The correlation of the classification with surgical treatments needs further studies to validate its usefulness. Chin Med J 2009; 122（2）：219-224

关键词： ossification posterior longitudinal ligament flaval ligament ligamentum flavum, tandem

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中西民族非物质文化遗产保护研究

贵州民族研究 2017年第1期38卷 127-130页

作者：郭炯湘潭大学法学院湖南湘潭411105

少数民族非物质文化遗产在我国历史上占据着举足轻重的地位。作为中华民族集体的智慧,其通过一种特有的思维形式以及行为习惯存在着。少数民族非物质文化遗产的存在,体现了中华民族的包容性和多样性,对文化主体以及主权的维护具有重要... 详细信息

少数民族非物质文化遗产在我国历史上占据着举足轻重的地位。作为中华民族集体的智慧,其通过一种特有的思维形式以及行为习惯存在着。少数民族非物质文化遗产的存在,体现了中华民族的包容性和多样性,对文化主体以及主权的维护具有重要意义。因此,需要重视对少数民族非物质文化遗产进行保护。与西方相比,我国对非物质文化遗产的正式保护起步较晚,从上世纪初到现在,经过百年发展历程,很多非物质文化遗产得到拯救,但由于我国地域的广阔性、民族的多样性以及法律法规不健全等多种原因,非物质文化遗产保护在整体上仍和西方国家存在较大差距,因此借鉴西方国家对非物质文化遗产保护的经验就势在必行。

关键词：少数民族非物质文化遗产保护

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远程教育环境下农村教师自主学习模式的研究

中国远程教育 2006年第2S期 60-63页

作者：郭炯西北师范大学教育技术与传播学院

本文在分析了农村远程教育自主学习特性的基础上,依据远程自主学习与校本培训相结合的原则,提出了农村教师自主学习模式的基本框架和运行策略。

关键词：农村远程教育自主学习模式运行策略

教育技术能力发展过程中教师的心理变化与需求分析

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中国远程教育 2007年第07S期 58-62页

作者：郭炯西北师范大学教育技术与传播学院

在当前农村远程教育发展过程中,要使农村远程教育工程能够得到有效应用,关键是解决好教师教育技术能力发展的问题。本文在对农村远程教育中教师教育技术能力发展过程调查问卷及访谈进行整理分析的基础上,总结出教师教育技术能力发展具... 详细信息

在当前农村远程教育发展过程中,要使农村远程教育工程能够得到有效应用,关键是解决好教师教育技术能力发展的问题。本文在对农村远程教育中教师教育技术能力发展过程调查问卷及访谈进行整理分析的基础上,总结出教师教育技术能力发展具有一定的阶段性,并对每一阶段教师表现出的不同心理和对技术与方法的不同需求进行了详细描述与分析。

关键词：农村远程教育工程教育技术能力心理需求