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Efficient Configuration Space Construction and Optimization for Motion Planning Article

Jia Pan, Dinesh Manocha

Engineering 2015, Volume 1, Issue 1, Pages 46-57 doi: 10.15302/J-ENG-2015009

Abstract:

The configuration space is a fundamental concept that is widely used in algorithmic robotics. Many applications in robotics, computer-aided design, and related areas can be reduced to computational problems in terms of configuration spaces. In this paper, we survey some of our recent work on solving two important challenges related to configuration spaces: ① how to efficiently compute an approximate representation of high-dimensional configuration spaces; and ② how to efficiently perform geometric proximity and motion planning queries in high-dimensional configuration spaces. We present new configuration space construction algorithms based on machine learning and geometric approximation techniques. These algorithms perform collision queries on many configuration samples. The collision query results are used to compute an approximate representation for the configuration space, which quickly converges to the exact configuration space. We also present parallel GPU-based algorithms to accelerate the performance of optimization and search computations in configuration spaces. In particular, we design efficient GPU-based parallel k-nearest neighbor and parallel collision detection algorithms and use these algorithms to accelerate motion planning.

Keywords： configuration space motion planning GPU parallel algorithm

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State space optimization of finite state machines from the viewpoint of control theory Research Article

Jumei Yue, Yongyi Yan, Zengqiang Chen, He Deng,yjm@mail.nankai.edu.cn,yyyan@mail.nankai.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 12, Pages 1551-1684 doi: 10.1631/FITEE.2000608

Abstract: Motivated by the inconvenience or even inability to explain the mathematics of the state of (FSMs) in most existing results, we consider the problem by viewing FSMs as logical dynamic systems. Borrowing ideas from the concept of equilibrium points of dynamic systems in control theory, the concepts of -equivalent states and -source equivalent states are introduced. Based on the state transition dynamic equations of FSMs proposed in recent years, several mathematical formulations of -equivalent states and -source equivalent states are proposed. These can be analogized to the necessary and sufficient conditions of equilibrium points of dynamic systems in control theory and thus give a mathematical explanation of the optimization problem. Using these mathematical formulations, two methods are designed to find all the -equivalent states and -source equivalent states of FSMs. Further, two ways of reducing the state space of FSMs are found. These can be implemented without computers but with only pen and paper in a mathematical manner. In addition, an open question is raised which can further improve these methods into unattended ones. Finally, the correctness and effectiveness of the proposed methods are verified by a practical language model.

Keywords：有限状态自动机；有限值系统；逻辑系统；逻辑网络；矩阵半张量积；空间优化

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Exploration and research of space physics and space weather

Wang Chi

Strategic Study of CAE 2008, Volume 10, Issue 6, Pages 41-45

Abstract:

Space physics is a fast-growing cross-discipline science with the advance of satellite technology since 1957. Space environment is becoming more and more important as the fourth living environment for human being. Starting from the early 1990s, space weather is born by applying the fundamentals of space physics to applications. The space weather study is aimed to investigate and alleviate the disaster effects of solar activity on our high-tech systems on the earth and in space. This report gives a brief summary of the history, current status and future direction of the international space physics and space weather exploration and study, and introduces the suggested space physics and space weather mid-long term development strategic plan and exploration roadmap.

Keywords： space physics space weather space physics exploration strategic plan

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Artificial intelligence algorithms for cyberspace security applications: a technological and status review Review

Jie CHEN, Dandan WU, Ruiyun XIE,chenjie1900@mail.nwpu.edu.cn,wudd@cetcsc.com

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 8, Pages 1117-1142 doi: 10.1631/FITEE.2200314

Abstract: Three technical problems should be solved urgently in : the timeliness and accuracy of network attack detection, the credibility assessment and prediction of the security situation, and the effectiveness of security defense strategy optimization. algorithms have become the core means to increase the chance of security and improve the network attack and defense ability in the application of . Recently, the breakthrough and application of AI technology have provided a series of advanced approaches for further enhancing network defense ability. This work presents a comprehensive review of AI technology articles for applications, mainly from 2017 to 2022. The papers are selected from a variety of journals and conferences: 52.68% are from Elsevier, Springer, and IEEE journals and 25% are from international conferences. With a specific focus on the latest approaches in , , and some popular s, the characteristics of the algorithmic models, performance results, datasets, potential benefits, and limitations are analyzed, and some of the existing challenges are highlighted. This work is intended to provide technical guidance for researchers who would like to obtain the potential of AI technical methods for and to provide tips for the later resolution of specific issues, and a mastery of the current development trends of technology and application and hot issues in the field of network security. It also indicates certain existing challenges and gives directions for addressing them effectively.

Keywords： Artificial intelligence (AI) Machine learning (ML) Deep learning (DL) Optimization algorithm Hybrid algorithm Cyberspace security

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Coordinated Development of Space Science, Space Technology, and Space Application in China

Zhou Jianping, Wu Ji

Strategic Study of CAE 2023, Volume 25, Issue 2, Pages 59-66 doi: 10.15302/J-SSCAE-2023.02.007

Abstract:

Owing to historical reasons and investment restrictions, China’s aerospace industry initially focused on space technology and application, with insufficient emphasis on space science; therefore, space science, technology, and application developed independently. The development of space technology should be deeply integrated into space science and application, thus to strengthen China’s aerospace industry and create new opportunities and achievements. This study explores the implications of space science, space technology, and space application and clarifies their interrelationships. Moreover, it systematically analyzes the development trend in space science, technology, and application worldwide and reviews the development situation of space-related fields in China. Based on this, it examines the necessity for coordinating the development of space science, technology, and application in China and summarizes the major challenges. Considering their overlapping needs and mutual promotion, space science, technology, and application should be coordinated throughout the process of planning, deployment, and implementation. First, the advantages of the new national system should be exploited to conduct top-level planning under unified management. Second, the innovation-driven development strategy should be insisted to promote the international competitiveness of China’s aerospace industry through technological progress. Third, basic research in the space field should be strengthened and high-level scientists and engineers should be cultivated. Lastly, resource planning and coordination should be strengthened to promote the rational opening and full utilization of space application data.

Keywords： aerospace industry space science space technology space application coordinated development sharing of space data

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Optimization of Urban Spatial Structure Based on TOD Model

Lu Huapu, Liu Ruoyang , Zhang Yongbo , Fu Zhihuan

Strategic Study of CAE 2022, Volume 24, Issue 6, Pages 137-145 doi: 10.15302/J-SSCAE-2022.06.012

Abstract:

Traffic congestion and environmental pollution restrain the high-quality development of cities and the improvement of residents' living quality. A transit-oriented-development (TOD) model that integrates transportation with land use is key to solving the abovementioned problems. This study uses mechanism analysis to investigate the relationship between transportation and land use, analyzes the differences between TOD and conventional models regarding land use patterns and population distribution, and investigates the population distribution characteristics of the TOD model and its coupling relationship with transportation. Moreover, the current status and problems of TOD in China are analyzed through case study, indicating that the implications, development goals, and paths of TOD models vary for different scenarios. Additionally, a reasonable urban spatial structure is proposed comprising urban spatial structures at three levels: urban agglomerations, metropolitan and downtown areas, and rail transit stations and their surrounding areas. The basic ideas, planning and design principles, and implementation paths for the deep integration of the proposed structure with transportation are explored. Furthermore, we suggest that measures should be taken in terms of management planning, laws and policies, standards and specifications, benefit distribution, planning approval, incentive mechanism, and public participation, thereby providing support for TOD model application and for improving urban construction.

Keywords： urban spatial structure integration of transportation and land use transit-oriented development urban agglomeration metropolitan and downtown area rail transit station

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Research on Cyberspace Sovereignty

Fang Binxing,Zou Peng and Zhu Shibing

Strategic Study of CAE 2016, Volume 18, Issue 6, Pages 1-7 doi: 10.15302/J-SSCAE-2016.06.001

Abstract:

Cyberspace sovereignty (referred to here by its short form, cyber sovereignty) is the extension of national sovereignty to the platform of information and communication technology systems. This article defines cyberspace and cyber sovereignty, discusses the existence of cyber sovereignty, and judges several erroneous points of view that deny cyber sovereignty.

Keywords： cyberspace cyberspace sovereignty stakeholder

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Research on the International Strategy for National Cyberspace Security

Fang Binxing,Du Aning and Zhang Xi,Wang Zhongru

Strategic Study of CAE 2016, Volume 18, Issue 6, Pages 13-16 doi: 10.15302/J-SSCAE-2016.06.003

Abstract:

Cyberspace security has been a crucial part in national security and is more and more important in the development of economy and society. Based on the current situation of international cyberspace security, this article analyzes the opportunities and challenges that China is confronted with, and study China's international cyberspace security strategy suitable for its own value and national interest. We then propose the objectives, principles and tasks of the strategy.

Keywords： cyberspace security cyberspace governance cyberspace strategy

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Characters of topological relations and its applications in spatial reasoning

Li Chengming and Liu Xiaoli

Strategic Study of CAE 2013, Volume 15, Issue 5, Pages 14-19

Abstract:

In the paper,the formal representation of topological relationships are proposed according to our early research results, and the characters are also introduced. Based on these characters, the results for com-posite topological relations are introduced. At last, the applications in spatial reasoning are proposed.

Keywords： topological relationship composite of topological relations spatial reasoning algbra reasoning logical reasoning

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Study on the Development of China’s Cyberspace Security Industry

An Da, Liang Zhihao, Xu Shouren

Strategic Study of CAE 2016, Volume 18, Issue 4, Pages 38-43 doi: 10.15302/J-SSCAE-2016.04.006

Abstract:

The paper summarizes the development situation and experiences of the Chinese cyberspace security industry during the 12th Five-Year Plan, analyzes its new development trends, and proposes policy suggestions for the industry development to provide a reference for cyberspace security industry during the 13th Five-Year Plan.

Keywords： cyberspace security cyberspace security industry independent and controllable standards

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Discuss of several basic problems in the GIS spatial relationship description

Deng Min,Li Chengming,Liu Xiaoli

Strategic Study of CAE 2013, Volume 15, Issue 5, Pages 20-24

Abstract:

Firstly,it analyzed the concept of space, and then discussed the characters of topological relationship unrelated with entities. Secondly, it proposed the topological representation of entities and its shortage. Lastly, the method considered the metric characters was suggested.

Keywords： space topological relationship representation of spatial relations

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Reconstructing Human‒Coal Space Relationship Through Coalmine Intellectualization

Fan Jingdao, Jin Zhixin, Wang Guofa, Li Chuan, Liu Wei, Yan Zhenguo

Strategic Study of CAE 2023, Volume 25, Issue 2, Pages 243-253 doi: 10.15302/J-SSCAE-2023.07.014

Abstract:

The human‒coal space relationship is significant for the safe and efficient production of coalmines. Reconstructing the human‒coal space order using intelligent technologies in coalmines will provide a core technical support for the high-quality development of the coal industry. This study examines the evolution and research progress of the human‒coal space relationship and proposes a human‒physical‒information (HPC) space form to break constraints from the traditional human‒physical space structure of coalmines. We find that coalmine intellectualization can change the physical locations and relative motions of coalmine production factors; it can reconstruct the three major factors of production, establish an integrated intelligent production management mode, and improve the development space of miners’ social values, thereby achieving an interconnection-of-everything production scene and liberating human from underground mining. Moreover, the study analyzes intelligent coal-mining and intelligent well-construction cases and reveals the practical values of coal mine intellectualization for the change of the human‒coal space relationship. We suggest that a development mode integrating new-generation technologies and modern coalmines should be established based on the intelligent HPC space theory of coalmines and by targeting human liberation and comprehensive development. This will promote the safe, efficient, intelligent, and green development and thus the overall upgrading of the coal industry.

Keywords： coalmine intellectualization spatial relationship human‒physical‒information space virtual‒real fusion production factors

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Cyberspace Endogenous Safety and Security Article

Jiangxing Wu

Engineering 2022, Volume 15, Issue 8, Pages 179-185 doi: 10.1016/j.eng.2021.05.015

Abstract:

Uncertain security threats caused by vulnerabilities and backdoors are the most serious and difficult problem in cyberspace. This paper analyzes the philosophical and technical causes of the existence of so-called “dark functions” such as system vulnerabilities and backdoors, and points out that endogenous security problems cannot be completely eliminated at the theoretical and engineering levels; rather, it is necessary to develop or utilize the endogenous security functions of the system architecture itself. In addition, this paper gives a definition for and lists the main technical characteristics of endogenous safety and security in cyberspace, introduces endogenous security mechanisms and characteristics based on dynamic heterogeneous redundancy (DHR) architecture, and describes the theoretical implications of a coding channel based on DHR.

Keywords： Cyberspace endogenous security problem Uncertain threat Cyberspace endogenous safety and security Relative right axiom Dynamic heterogeneous redundant architecture

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Influence and hazard of disastrous space weather on power grid in China

liu Lianguang

Strategic Study of CAE 2010, Volume 12, Issue 9, Pages 29-33

Abstract:

The measured data of GIC in Guangdong Lingao 500 kV power networks during the several magnetic storms at the peak of 23rd Solar Cycle, the GIC calculation results of 2010 750 kV planning power grid in Shanxi, Gansu, Qinghai and Ningxia, the structure and characteristics of power networks from 500 kV to 1 000 kV, and super magnetic storm in 1859 are analyzed in this paper. Through the analysis, the possible impacts of extreme space weather on the future UHV, large-scale power system security in China are discussed, and the research suggestions coping with the strong solar storms are proposed.

Keywords： space weather magnetic storm GIC UHV power grid safety

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Improved dynamic grey wolf optimizer Research Articles

Xiaoqing Zhang, Yuye Zhang, Zhengfeng Ming,249140543@qq.com

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 6, Pages 887-890 doi: 10.1631/FITEE.2000191

Abstract: In the standard (GWO), the search wolf must wait to update its current position until the comparison between the other search wolves and the three leader wolves is completed. During this waiting period, the standard GWO is seen as the static GWO. To get rid of this waiting period, two dynamic GWO algorithms are proposed: the first dynamic (DGWO1) and the second dynamic (DGWO2). In the dynamic GWO algorithms, the current search wolf does not need to wait for the comparisons between all other search wolves and the leading wolves, and its position can be updated after completing the comparison between itself or the previous search wolf and the leading wolves. The position of the search wolf is promptly updated in the dynamic GWO algorithms, which increases the iterative convergence rate. Based on the structure of the dynamic GWOs, the performance of the other improved GWOs is examined, verifying that for the same improved algorithm, the one based on dynamic GWO has better performance than that based on static GWO in most instances.

Keywords：群智能；灰狼优化算法；动态灰狼优化算法；优化实验

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Title Author Date Type Operation

Efficient Configuration Space Construction and Optimization for Motion Planning

Jia Pan, Dinesh Manocha

Journal Article

State space optimization of finite state machines from the viewpoint of control theory

Jumei Yue, Yongyi Yan, Zengqiang Chen, He Deng,yjm@mail.nankai.edu.cn,yyyan@mail.nankai.edu.cn

Journal Article

Exploration and research of space physics and space weather

Wang Chi

Journal Article