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Mortarless structures based on topological interlocking

Arcady V. DYSKIN, Elena PASTERNAK, Yuri ESTRIN

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2, Pages 188-197 doi: 10.1007/s11709-012-0156-8

Abstract: We review the principle of topological interlocking and analyze the properties of the mortarless structuresblocks are kept in place without keys or connectors that are the weakest elements of the conventional interlocking

Keywords： topological interlocking fragmented structures segmented structures constraint delamination bending stiffness

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Description and reasoning of integrated topological and directional relation of bodies in 3D space

Liu Xin,Li Chengming and Liu Wenbao

Strategic Study of CAE 2013, Volume 15, Issue 5, Pages 8-13

Abstract: The topological directional regions were described by Allen interval pair[(R1,R2,R3)], where R1,R2 andAccording to definition of integrated topological and direction relation, the qualitative reasoning ofintegrated topological and directional relations were studied.Empirical examples were provided to show the qualitative reasoning process and results of topologicalCombined tables of the integrated topological and directional relations were obtained when the topological

Keywords： spatial relation topological relation direction relation integrated topological and direction relation

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Application of a vertex chain operation algorithm on topological analysis of three-dimensional fractured

Zixin ZHANG, Jia WU, Xin HUANG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2, Pages 187-208 doi: 10.1007/s11709-017-0391-0

Abstract: Identifying the morphology of rock blocks is vital to accurate modelling of rock mass structures. This paper applies the concepts of directed edges and vertex chain operations which are typical for block tracing approach to block assembling approach to construct the structure of three-dimensional fractured rock masses. Polygon subtraction and union algorithms that rely merely on vertex chain operation are proposed, which allow a fast and convenient construction of complex faces/loops. Apart from its robustness in dealing with finite discontinuities and complex geometries, the advantages of the current methodology in tackling some challenging issues associated with the morphological analysis of rock blocks are addressed. In particular, the identification of complex blocks with interior voids such as cavity, pit and torus can be readily achieved based on the number and the type of loops. The improved morphology visualization approach can benefit the pre-processing stage when analyzing the stability of rock masses subject to various engineering impacts using the block theory and the discrete element method.

Keywords： morphology block assembling vertex operation discontinuities

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“Charging” the cigarette butt: heteroatomic porous carbon nanosheets with edge-induced topological defects

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11, Pages 1755-1764 doi: 10.1007/s11705-023-2318-8

Abstract: oxygen evolution reaction by facilitating the adsorption of oxygenated intermediates by the edge-induced topological

Keywords： oxygen evolution reaction porous carbon nanosheets Co nanoparticles edge-induced topological defects

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Virtual network embedding based on real-time topological attributes

Jian DING,Tao HUANG,Jiang LIU,Yun-jie LIU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 2, Pages 109-118 doi: 10.1631/FITEE.1400147

Abstract: of a node, such as CPU capacity and bandwidth, to determine how to map a VN, without considering the topologicalIn this paper, a new embedding algorithm is proposed based on real-time topological attributes.

Keywords： Virtual network embedding (VNE) Real-time topological attributes Betweenness centrality Correlation

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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 areBased on these characters, the results for com-posite topological relations are introduced.

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

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Topological reorganization and functional alteration of distinct genomic components in gallbladder cancer

Frontiers of Medicine doi: 10.1007/s11684-023-1008-8

Abstract: However, knowledge of the topological rearrangement of genomic hierarchical layers in cancer is largely

Keywords： 3D genome cancer TADs loop gene regulation

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Symptom network topological features predict the effectiveness of herbal treatment for pediatric cough

Mengxue Huang, Jingjing Wang, Runshun Zhang, Zhuying Ni, Xiaoying Liu, Wenwen Liu, Weilian Kong, Yao Chen, Tiantian Huang, Guihua Li, Dan Wei, Jianzhong Liu, Xuezhong Zhou

Frontiers of Medicine 2020, Volume 14, Issue 3, Pages 357-367 doi: 10.1007/s11684-019-0699-3

Abstract: Pediatric cough is a heterogeneous condition in terms of symptoms and the underlying disease mechanisms. Symptom phenotypes hold complicated interactions between each other to form an intricate network structure. This study aims to investigate whether the network structure of pediatric cough symptoms is associated with the prognosis and outcome of patients. A total of 384 cases were derived from the electronic medical records of a highly experienced traditional Chinese medicine (TCM) physician. The data were divided into two groups according to the therapeutic effect, namely, an invalid group (group A with 40 cases of poor efficacy) and a valid group (group B with 344 cases of good efficacy). Several well-established analysis methods, namely, statistical test, correlation analysis, and complex network analysis, were used to analyze the data. This study reports that symptom networks of patients with pediatric cough are related to the effectiveness of treatment: a dense network of symptoms is associated with great difficulty in treatment. Interventions with the most different symptoms in the symptom network may have improved therapeutic effects.

Keywords： pediatric cough complex network symptoms traditional Chinese medicine electronic medical records

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Conceptual design of compliant mechanisms using level set method

Shi-kui CHEN, Michael Yu WANG

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2, Pages 131-145 doi: 10.1007/s11465-006-0018-y

Abstract: The application of level set methods endows the optimization process with the particular quality that topological

Keywords： splitting minimum dimensional optimization Hamilton-Jacobi topological

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Development of lunar regolith composite and structure via laser-assisted sintering

Frontiers of Mechanical Engineering doi: 10.1007/s11465-021-0662-2

Abstract: Aiming at the exploration and resource utilization activities on the Moon, in situ resource utilization and in situ manufacturing are proposed to minimize the dependence on the ground transportation supplies. In this paper, a laser-assisted additive manufacturing process is developed to fabricate lunar regolith composites with PA12/SiO₂ mixing powders. The process parameters and composite material compositions are optimized in an appropriate range through orthogonal experiments to establish the relationship of process–structure–property for lunar regolith composites. The optimal combination of composite material compositions and process parameters are mixing ratio of 50/50 in volume, laser power of 30 W, scanning speed of 3500 mm/s, and scanning hatch space of 0.2 mm. The maximum tensile strength of lunar regolith composites reaches 9.248 MPa, and the maximum depth of surface variation is 120.79 μm, which indicates poor powder fusion and sintering quality. Thereafter, the mechanical properties of laser-sintered lunar regolith composites are implemented to the topology optimization design of complex structures. The effectiveness and the feasibility of this laser-assisted process are potentially developed for future lightweight design and manufacturing of the solar panel installed on the lunar rover.

Keywords： in situ manufacturing laser-assisted powder fusion process mechanical properties topological

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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: text-align: justify;">Firstly,it analyzed the concept of space, and then discussed the characters of topologicalSecondly, it proposed the topological representation of entities and its shortage.

Keywords： space topological relationship representation of spatial relations

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Novel quantum-inspired firefly algorithm for optimal power quality monitor placement

Ling Ai WONG,Hussain SHAREEF,Azah MOHAMED,Ahmad Asrul IBRAHIM

Frontiers in Energy 2014, Volume 8, Issue 2, Pages 254-260 doi: 10.1007/s11708-014-0302-1

Abstract: multi-objective function was used with the system observability constraint, which is determined via the topological

Keywords： quantum-inspired binary firefly algorithm topological monitor reach area power quality

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Paths for the Digital Transformation and Intelligent Upgrade of China’s Discrete Manufacturing Industry

Li Xinyu, Li Zhaofu, Gao Liang

Strategic Study of CAE 2022, Volume 24, Issue 2, Pages 64-74 doi: 10.15302/J-SSCAE-2022.02.008

Abstract:

The discrete manufacturing industry in China is currently being transformed and upgraded. Digital transformation and intelligent upgrade is an inevitable choice for China’s discrete manufacturing industry, as intelligent manufacturing can promote the quality, efficiency, and competitiveness of discrete manufacturing. The sub-sectors of discrete manufacturing in China differs significantly and requires diversified paths for digital transformation and intelligent upgrade. In this paper, we first summarize the typical characteristics of the discrete manufacturing industry, explore the challenges regarding the digital transformation and intelligent upgrade of the industry, and elaborate the common key technologies including advanced manufacturing, new-generation information, and new-generation artificial intelligence. Subsequently, we investigate four typical cases to present the frontier application progress in the field in China, and propose the following key development tasks: (1) achieving breakthroughs in keys enabling technologies for intelligent manufacturing, (2) developing intelligent manufacturing equipment, (3) building digital and intelligent workshops and factories, (4) providing digital and intelligent services, and (5) building standards and safety systems. Furthermore, it is necessary to accelerate pilot application, highlight domestication, increase the reserve of high-tech talents, and formulate relevant laws and regulations, to promote the high-quality development of China’s discrete manufacturing industry.

Keywords： intelligent manufacturing discrete manufacturing industry digital transformation and intelligent upgrade topological

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Several New Semiconductor Lasers and Status, Challenges and Insights of Related Industries

Wei Xin, Li Ming, Li Jian, Wang Chao, Li Chuanchuan

Strategic Study of CAE 2020, Volume 22, Issue 3, Pages 21-28 doi: 10.15302/J-SSCAE-2020.03.004

Abstract: to increase investment in vertical external cavity surface emitting lasers, micro-nano lasers, and topological

Keywords： semiconductor lasers，optically pumped vertical external cavity surface emitting lasers，nanolasers，topological

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Theory and Method of Power System Integrated Security Region Irrelevant to Operation States: An Introduction Feature Article

Yixin Yu, Yanli Liu, Chao Qin, Tiankai Yang

Engineering 2020, Volume 6, Issue 7, Pages 754-777 doi: 10.1016/j.eng.2019.11.016

Abstract: presents 11 facts and related remarks to introduce the basic concepts, composition, dynamics nature, and topologicalThe most critical finding on the topological and geometric characteristics of SRs is that, within the

Keywords： security Static voltage stability Small-disturbance stability Transient stability Dynamics nature Topological

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Title Author Date Type Operation

Mortarless structures based on topological interlocking

Arcady V. DYSKIN, Elena PASTERNAK, Yuri ESTRIN

Journal Article

Description and reasoning of integrated topological and directional relation of bodies in 3D space

Liu Xin,Li Chengming and Liu Wenbao

Journal Article

Application of a vertex chain operation algorithm on topological analysis of three-dimensional fractured

Zixin ZHANG, Jia WU, Xin HUANG

Journal Article

“Charging” the cigarette butt: heteroatomic porous carbon nanosheets with edge-induced topological defects

Journal Article

Virtual network embedding based on real-time topological attributes

Jian DING,Tao HUANG,Jiang LIU,Yun-jie LIU

Journal Article

Characters of topological relations and its applications in spatial reasoning

Li Chengming and Liu Xiaoli

Journal Article

Topological reorganization and functional alteration of distinct genomic components in gallbladder cancer

Journal Article

Symptom network topological features predict the effectiveness of herbal treatment for pediatric cough

Mengxue Huang, Jingjing Wang, Runshun Zhang, Zhuying Ni, Xiaoying Liu, Wenwen Liu, Weilian Kong, Yao Chen, Tiantian Huang, Guihua Li, Dan Wei, Jianzhong Liu, Xuezhong Zhou

Journal Article

Conceptual design of compliant mechanisms using level set method

Shi-kui CHEN, Michael Yu WANG

Journal Article

Development of lunar regolith composite and structure via laser-assisted sintering

Journal Article

Discuss of several basic problems in the GIS spatial relationship description

Deng Min,Li Chengming,Liu Xiaoli

Journal Article

Novel quantum-inspired firefly algorithm for optimal power quality monitor placement

Ling Ai WONG,Hussain SHAREEF,Azah MOHAMED,Ahmad Asrul IBRAHIM

Journal Article