Metal-organic frameworks(MOFs)can serve as prevailing anodes for lithium-ion batteries,due to their multiple redox-active sites and prominent structural compatibility.However,the poor electronic conductivity and infer...Metal-organic frameworks(MOFs)can serve as prevailing anodes for lithium-ion batteries,due to their multiple redox-active sites and prominent structural compatibility.However,the poor electronic conductivity and inferior cyclability hinder their further implementation.Herein,a synthetic methodology for trimetallic Fe-Co-Ni MOFs with nanoframe superstructures architecture(Fe-Co-Ni NFSs)via structural evolution is proposed for versatile anode materials for lithium storage.Ascribed to optimal compositional and structural optimization,the Fe-Co-Ni NFSs achieve exceptional electrochemical performance with superior specific capacity(1030 mAh g^(−1) at 0.1 A g^(−1)),outstanding rate capacity(414 mAh g^(−1) at 2 A g^(−1)),and prolonged cyclability(489 mAh g^(−1) upon 1000 cycles at 1 A g^(−1)).Both experimental and theoretical investigations reveal that the multi-component metal centers could boost electronic conductivity,confer multiple active sites,and energetically favor Li adsorption capability.Additionally,the nanoframe superstructures of Fe-Co-Ni NFSs could facilitate stress-buffering effect on volumetric expansion and prevent electrode pulverization,further improving the lithium storage capability.This work envisions a meticulous protocol for high-performance MOF anode materials for lithium-ion batteries.展开更多
Design pattern suggests that developers must be able to reuse proven solutions emerging from the best design practices to solve common design problems while composing patterns to create reusable designs that can be ma...Design pattern suggests that developers must be able to reuse proven solutions emerging from the best design practices to solve common design problems while composing patterns to create reusable designs that can be mapped to different types of enterprise frameworks and architectures such as The Open Group Architecture Framework (TOGAF). Without this, business analysts, designers and developers are not properly applying design solutions or take full benefit of the power of patterns as reuse blocks, resulting in poor performance, poor scalability, and poor usability. Furthermore, these professionals may “reinvent the wheel” when attempting to implement the same design for different types of architectures of TOGAF framework. In this paper, we introduce different categories of design patterns as a vehicle for capturing and reusing good analyses, designs and implementation applied to TOGAF framework while detailing a motivating exemplar on how design patterns can be composed to create generic types of architectures of TOGAF framework. Then, we discuss why patterns are a suitable for developing and documenting various architectures including enterprise architectures as TOGAF.展开更多
针对低慢小飞行器在综合处置中威胁环境复杂、多学科关键技术交互密切等现状,引入美国国防部体系架构框架(Department of Defense Architecture Framework,DoDAF)对低慢小飞行器综合处置体系进行顶层设计。对其视角视图进行“补充、裁...针对低慢小飞行器在综合处置中威胁环境复杂、多学科关键技术交互密切等现状,引入美国国防部体系架构框架(Department of Defense Architecture Framework,DoDAF)对低慢小飞行器综合处置体系进行顶层设计。对其视角视图进行“补充、裁剪、融合”,定义了各视角的建模顺序及各视角下视图的建模方法,形成一套面向各类复杂体系分析与设计问题完备的构建方法及一套体系架构快速设计方法。并以一种新型多元载荷协同作战的低慢小飞行器综合处置体系进行建模与仿真,验证了该方法能为低慢小飞行器的综合处置作战提供系统全面的描述和可靠的概念模型支撑、该模型可为作战体系架构设计与装备技术发展提供牵引。展开更多
Self-adaptive software is an efficient way to cope with highly dynamic nature of the environment where it is situated. In this paper, from the perspective of software architecture, we propose a component framework for...Self-adaptive software is an efficient way to cope with highly dynamic nature of the environment where it is situated. In this paper, from the perspective of software architecture, we propose a component framework for supporting the architecture-based design and development of self-adaptive applications. It captures some key elements of the research on software architecture and provides more flexible facilities to decouple interacting components. Based on that, a prototype is implemented to demonstrate its feasibility, and at last a case study is presented to illustrate our framework.展开更多
为确保铁路科研企业数字化转型的高效、有序推进,需要设计针对铁路科研企业的数字化总体架构。文章基于TOGAF(The Open Group Architecture Framework)理论,结合铁路科研企业的关键业务和数字化能力需求,对铁路科研企业的数字化总体架...为确保铁路科研企业数字化转型的高效、有序推进,需要设计针对铁路科研企业的数字化总体架构。文章基于TOGAF(The Open Group Architecture Framework)理论,结合铁路科研企业的关键业务和数字化能力需求,对铁路科研企业的数字化总体架构进行研究。数字化总体架构主要包括业务架构、应用架构、数据架构、技术架构和安全架构等5部分,能够帮助铁路科研企业进一步明确决策体系、运营模式、能力构建和业务结构,从而为科学推进和顺利实施铁路科研企业的数字化转型提供参考和理论依据。展开更多
保障系统结构建模是发展和构建新一代航空装备智能保障系统的重要基础。航空装备保障系统涉及保障要素多、交联关系复杂,需从系统工程的角度开展顶层设计,并采用统一的结构框架对其体系结构进行建模表征。引入美国国防部架构框架(Depart...保障系统结构建模是发展和构建新一代航空装备智能保障系统的重要基础。航空装备保障系统涉及保障要素多、交联关系复杂,需从系统工程的角度开展顶层设计,并采用统一的结构框架对其体系结构进行建模表征。引入美国国防部架构框架(Departmeant of Defense Architecture Framework,DoDAF)体系结构框架,提出基于“概念-任务-能力”的体系结构开发序列,构建航空装备智能保障系统的能力、保障活动、各保障要素的信息交互及组织关系等视图模型,得到“能力层-需求层-技术层”之间的对应关系。该方法能够全面地描述航空装备智能保障系统体系结构,提高不同保障要素之间的互操作性,并将其转化为具体的设计要求,可为航空装备智能保障系统开发提供支持。展开更多
Self-assembly of Zn(NO3)2·6H2O and 2,3,5,6-tetrabromoterephthalic acid(H2TBTA) gave rise to two new zinc metal-organic frameworks,Zn(HTBTA)2(phen)2·H2O(1) and Zn(TBTA)1/2(μ2-OH)(H2O)·0....Self-assembly of Zn(NO3)2·6H2O and 2,3,5,6-tetrabromoterephthalic acid(H2TBTA) gave rise to two new zinc metal-organic frameworks,Zn(HTBTA)2(phen)2·H2O(1) and Zn(TBTA)1/2(μ2-OH)(H2O)·0.25EtOH(2).Complex 1 is a mononuclear molecule.The hydrogen bonding interactions further connect the mononuclear molecules to generate a 2D supramolecular architecture.Complex 2 is a 2D organic-inorganic hybrid layer framework constructed from 1D rod-shaped secondary building units.展开更多
针对传统文本模式存在的需求域与设计域之间信息离散、关联性差、不易追溯等问题,采用基于模型的系统工程(model-based systems engineering,MBSE)方法开展载人登月系统设计。引入美国国防部架构框架(Department of Defense Architectur...针对传统文本模式存在的需求域与设计域之间信息离散、关联性差、不易追溯等问题,采用基于模型的系统工程(model-based systems engineering,MBSE)方法开展载人登月系统设计。引入美国国防部架构框架(Department of Defense Architecture Framework,DoDAF),提出载人登月总体设计体系结构可执行模型的流程和方法;采用系统建模语言(system modeling language,SysML)建立了视图模型,描述了系统架构、需求模型和逻辑接口。并开展了初步逻辑仿真验证,可为载人登月系统设计和MBSE方法应用提供参考。展开更多
A novel porous lanthanide-organic coordination polymer, [Nd(H2O)(HnicO)(TP)]·2H2O (1) (H2nicO=2-hydroxynicotinic acid, TP= terephthalate), was prepared under hydrothermal condition and characterized by ...A novel porous lanthanide-organic coordination polymer, [Nd(H2O)(HnicO)(TP)]·2H2O (1) (H2nicO=2-hydroxynicotinic acid, TP= terephthalate), was prepared under hydrothermal condition and characterized by single-crystal X-ray diffraction, thermogravimetric analysis and infrared spectroscopy. Compound 1 exhibited a flexible coordination geometry of lanthanide ions, which possessed a three-dimensional (3D) open framework with one-dimensional (1D) channels containing lattice water molecules. This framework structure exhibited a high stability up to 330℃ after removing free water molecules. A homometallic supramolecular framework (Zn(HnicO)2(H2O)2 (2)) was obtained due to the competitive reaction between organic ligands, Nd3+ and Zn2+ ions. The results showed that on the basis of the soft-hard/acid-base principle the coordination selection between metal ions and organic ligands played an essential role in the smart construction of lanthanide architectures.展开更多
天临空一体协同遥感体系综合利用现代信息技术,聚合天、临、空各域多源异构数据,实现精准应急服务与指挥决策,系统庞大、结构复杂,缺乏体系结构建模与仿真方面的研究。基于天临空一体协同遥感体系结构特点,构建了体系最小原型系统;借鉴D...天临空一体协同遥感体系综合利用现代信息技术,聚合天、临、空各域多源异构数据,实现精准应急服务与指挥决策,系统庞大、结构复杂,缺乏体系结构建模与仿真方面的研究。基于天临空一体协同遥感体系结构特点,构建了体系最小原型系统;借鉴DoDAF(department of defense architecture framework)以及ABM(activity based methodology)方法完成了最小原型系统结构建模,分析了天临空一体协同遥感体系作战资源流程与信息交互方式、功能结构划分与系统接口表述以及在应急信息支援模式以及常规遥感观测模式下的具体应用。验证试验结果表明:模型构建合理,可为体系集成仿真与效能评估奠定基础,为天临空一体协同遥感体系研究与优化设计提供参考。展开更多
It is discussed with the design and implementation of an architecture for a mobile robot to navigate in dynamic and anknown indoor environments. The architecture is based on the framework of Open Robot Control Softwar...It is discussed with the design and implementation of an architecture for a mobile robot to navigate in dynamic and anknown indoor environments. The architecture is based on the framework of Open Robot Control Software at KTH (OROCOS@KTH), which is also discussed and evaluated to navigate indoor efficiently, a new algorithm named door-like-exit detection is proposed which employs 2D feature oft. door and extracts key points of pathway from the raw data of a laser scanner. As a hybrid architecture, it is decomposed into several basic components which can be classified as either deliberative or reactive. Each component can concurrently execute and communicate with another. It is expansible and transferable and its components are reusable.展开更多
Software systems can be among the most complex constructions in engineering disciplines and can span into years of development. Most software systems though implement in part what has already been built and tend to fo...Software systems can be among the most complex constructions in engineering disciplines and can span into years of development. Most software systems though implement in part what has already been built and tend to follow known or nearly known architectures. Although most software systems are not of the size of say Microsoft Windows 8, complexity of software development can be quick to increase. Thus among these methods that are the most important is the use of architectural and design patterns and software frameworks. Patterns provide known solutions to re-occurring problems that developers are facing. By using well-known patterns reusable components can be built in frameworks.Software frameworks provide developers with powerful tools to develop more flexible and less error-prone applications in a more effective way. Software frameworks often help expedite the development process by providing necessary functionality “out of the box”.?Providing frameworks for reusability and separation of concerns is key to software development today. In this study I take a look at the state of art and the impact of frameworks and patterns in software development.展开更多
Data clustering is a significant information retrieval technique in today's data intensive society. Over the last few decades a vast variety of huge number of data clustering algorithms have been designed and impleme...Data clustering is a significant information retrieval technique in today's data intensive society. Over the last few decades a vast variety of huge number of data clustering algorithms have been designed and implemented for all most all data types. The quality of results of cluster analysis mainly depends on the clustering algorithm used in the analysis. Architecture of a versatile, less user dependent, dynamic and scalable data clustering machine is presented. The machine selects for analysis, the best available data clustering algorithm on the basis of the credentials of the data and previously used domain knowledge. The domain knowledge is updated on completion of each session of data analysis.展开更多
基金We gratefully acknowledge the financial support from the Guangzhou Science and Technology Project (No.201904010213).
文摘Metal-organic frameworks(MOFs)can serve as prevailing anodes for lithium-ion batteries,due to their multiple redox-active sites and prominent structural compatibility.However,the poor electronic conductivity and inferior cyclability hinder their further implementation.Herein,a synthetic methodology for trimetallic Fe-Co-Ni MOFs with nanoframe superstructures architecture(Fe-Co-Ni NFSs)via structural evolution is proposed for versatile anode materials for lithium storage.Ascribed to optimal compositional and structural optimization,the Fe-Co-Ni NFSs achieve exceptional electrochemical performance with superior specific capacity(1030 mAh g^(−1) at 0.1 A g^(−1)),outstanding rate capacity(414 mAh g^(−1) at 2 A g^(−1)),and prolonged cyclability(489 mAh g^(−1) upon 1000 cycles at 1 A g^(−1)).Both experimental and theoretical investigations reveal that the multi-component metal centers could boost electronic conductivity,confer multiple active sites,and energetically favor Li adsorption capability.Additionally,the nanoframe superstructures of Fe-Co-Ni NFSs could facilitate stress-buffering effect on volumetric expansion and prevent electrode pulverization,further improving the lithium storage capability.This work envisions a meticulous protocol for high-performance MOF anode materials for lithium-ion batteries.
文摘Design pattern suggests that developers must be able to reuse proven solutions emerging from the best design practices to solve common design problems while composing patterns to create reusable designs that can be mapped to different types of enterprise frameworks and architectures such as The Open Group Architecture Framework (TOGAF). Without this, business analysts, designers and developers are not properly applying design solutions or take full benefit of the power of patterns as reuse blocks, resulting in poor performance, poor scalability, and poor usability. Furthermore, these professionals may “reinvent the wheel” when attempting to implement the same design for different types of architectures of TOGAF framework. In this paper, we introduce different categories of design patterns as a vehicle for capturing and reusing good analyses, designs and implementation applied to TOGAF framework while detailing a motivating exemplar on how design patterns can be composed to create generic types of architectures of TOGAF framework. Then, we discuss why patterns are a suitable for developing and documenting various architectures including enterprise architectures as TOGAF.
文摘针对低慢小飞行器在综合处置中威胁环境复杂、多学科关键技术交互密切等现状,引入美国国防部体系架构框架(Department of Defense Architecture Framework,DoDAF)对低慢小飞行器综合处置体系进行顶层设计。对其视角视图进行“补充、裁剪、融合”,定义了各视角的建模顺序及各视角下视图的建模方法,形成一套面向各类复杂体系分析与设计问题完备的构建方法及一套体系架构快速设计方法。并以一种新型多元载荷协同作战的低慢小飞行器综合处置体系进行建模与仿真,验证了该方法能为低慢小飞行器的综合处置作战提供系统全面的描述和可靠的概念模型支撑、该模型可为作战体系架构设计与装备技术发展提供牵引。
基金Supported bythe National Key Basic Research andDevelopment Programof China (2002CB312002) the National Natu-ral Science Foundation of China (60403014 ,60233010) +1 种基金the NationalHigh-Tech Research and Development Program of China(2005AA113030) the Natural Science Foundation of Jiangsu Prov-ince (BK2006712)
文摘Self-adaptive software is an efficient way to cope with highly dynamic nature of the environment where it is situated. In this paper, from the perspective of software architecture, we propose a component framework for supporting the architecture-based design and development of self-adaptive applications. It captures some key elements of the research on software architecture and provides more flexible facilities to decouple interacting components. Based on that, a prototype is implemented to demonstrate its feasibility, and at last a case study is presented to illustrate our framework.
文摘为确保铁路科研企业数字化转型的高效、有序推进,需要设计针对铁路科研企业的数字化总体架构。文章基于TOGAF(The Open Group Architecture Framework)理论,结合铁路科研企业的关键业务和数字化能力需求,对铁路科研企业的数字化总体架构进行研究。数字化总体架构主要包括业务架构、应用架构、数据架构、技术架构和安全架构等5部分,能够帮助铁路科研企业进一步明确决策体系、运营模式、能力构建和业务结构,从而为科学推进和顺利实施铁路科研企业的数字化转型提供参考和理论依据。
文摘保障系统结构建模是发展和构建新一代航空装备智能保障系统的重要基础。航空装备保障系统涉及保障要素多、交联关系复杂,需从系统工程的角度开展顶层设计,并采用统一的结构框架对其体系结构进行建模表征。引入美国国防部架构框架(Departmeant of Defense Architecture Framework,DoDAF)体系结构框架,提出基于“概念-任务-能力”的体系结构开发序列,构建航空装备智能保障系统的能力、保障活动、各保障要素的信息交互及组织关系等视图模型,得到“能力层-需求层-技术层”之间的对应关系。该方法能够全面地描述航空装备智能保障系统体系结构,提高不同保障要素之间的互操作性,并将其转化为具体的设计要求,可为航空装备智能保障系统开发提供支持。
基金Supported by the NNSFC (20701025)the NSF of Shandong Province (Y2008B01),and Shandong University
文摘Self-assembly of Zn(NO3)2·6H2O and 2,3,5,6-tetrabromoterephthalic acid(H2TBTA) gave rise to two new zinc metal-organic frameworks,Zn(HTBTA)2(phen)2·H2O(1) and Zn(TBTA)1/2(μ2-OH)(H2O)·0.25EtOH(2).Complex 1 is a mononuclear molecule.The hydrogen bonding interactions further connect the mononuclear molecules to generate a 2D supramolecular architecture.Complex 2 is a 2D organic-inorganic hybrid layer framework constructed from 1D rod-shaped secondary building units.
文摘针对传统文本模式存在的需求域与设计域之间信息离散、关联性差、不易追溯等问题,采用基于模型的系统工程(model-based systems engineering,MBSE)方法开展载人登月系统设计。引入美国国防部架构框架(Department of Defense Architecture Framework,DoDAF),提出载人登月总体设计体系结构可执行模型的流程和方法;采用系统建模语言(system modeling language,SysML)建立了视图模型,描述了系统架构、需求模型和逻辑接口。并开展了初步逻辑仿真验证,可为载人登月系统设计和MBSE方法应用提供参考。
基金Program for New Century Excellent Talents in University (NCET-05-0278)the National Natural Science Foundation of China (50872016)the Foundation for the Author of National Excellent Doctoral Dissertation of China (200322)
文摘A novel porous lanthanide-organic coordination polymer, [Nd(H2O)(HnicO)(TP)]·2H2O (1) (H2nicO=2-hydroxynicotinic acid, TP= terephthalate), was prepared under hydrothermal condition and characterized by single-crystal X-ray diffraction, thermogravimetric analysis and infrared spectroscopy. Compound 1 exhibited a flexible coordination geometry of lanthanide ions, which possessed a three-dimensional (3D) open framework with one-dimensional (1D) channels containing lattice water molecules. This framework structure exhibited a high stability up to 330℃ after removing free water molecules. A homometallic supramolecular framework (Zn(HnicO)2(H2O)2 (2)) was obtained due to the competitive reaction between organic ligands, Nd3+ and Zn2+ ions. The results showed that on the basis of the soft-hard/acid-base principle the coordination selection between metal ions and organic ligands played an essential role in the smart construction of lanthanide architectures.
文摘天临空一体协同遥感体系综合利用现代信息技术,聚合天、临、空各域多源异构数据,实现精准应急服务与指挥决策,系统庞大、结构复杂,缺乏体系结构建模与仿真方面的研究。基于天临空一体协同遥感体系结构特点,构建了体系最小原型系统;借鉴DoDAF(department of defense architecture framework)以及ABM(activity based methodology)方法完成了最小原型系统结构建模,分析了天临空一体协同遥感体系作战资源流程与信息交互方式、功能结构划分与系统接口表述以及在应急信息支援模式以及常规遥感观测模式下的具体应用。验证试验结果表明:模型构建合理,可为体系集成仿真与效能评估奠定基础,为天临空一体协同遥感体系研究与优化设计提供参考。
基金The project is supported by European Open Robot Control Software Founda-tion(No.IST-2000-31064), National Natural Science Foundation of China(No.60475031) and the Swedish Foundation for Strategic Research, Sweden.
文摘It is discussed with the design and implementation of an architecture for a mobile robot to navigate in dynamic and anknown indoor environments. The architecture is based on the framework of Open Robot Control Software at KTH (OROCOS@KTH), which is also discussed and evaluated to navigate indoor efficiently, a new algorithm named door-like-exit detection is proposed which employs 2D feature oft. door and extracts key points of pathway from the raw data of a laser scanner. As a hybrid architecture, it is decomposed into several basic components which can be classified as either deliberative or reactive. Each component can concurrently execute and communicate with another. It is expansible and transferable and its components are reusable.
文摘Software systems can be among the most complex constructions in engineering disciplines and can span into years of development. Most software systems though implement in part what has already been built and tend to follow known or nearly known architectures. Although most software systems are not of the size of say Microsoft Windows 8, complexity of software development can be quick to increase. Thus among these methods that are the most important is the use of architectural and design patterns and software frameworks. Patterns provide known solutions to re-occurring problems that developers are facing. By using well-known patterns reusable components can be built in frameworks.Software frameworks provide developers with powerful tools to develop more flexible and less error-prone applications in a more effective way. Software frameworks often help expedite the development process by providing necessary functionality “out of the box”.?Providing frameworks for reusability and separation of concerns is key to software development today. In this study I take a look at the state of art and the impact of frameworks and patterns in software development.
文摘Data clustering is a significant information retrieval technique in today's data intensive society. Over the last few decades a vast variety of huge number of data clustering algorithms have been designed and implemented for all most all data types. The quality of results of cluster analysis mainly depends on the clustering algorithm used in the analysis. Architecture of a versatile, less user dependent, dynamic and scalable data clustering machine is presented. The machine selects for analysis, the best available data clustering algorithm on the basis of the credentials of the data and previously used domain knowledge. The domain knowledge is updated on completion of each session of data analysis.