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Analysis on damage causes of built-in corridor in core rock-fill dam on thick overburden: A case study

Jia’ao YU; Zhenzhong SHEN; Zhangxin HUANG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 762-780 doi: 10.1007/s11709-022-0847-8

Abstract: The stress state of the built-in corridor in core rock-fill dam on thick overburden is extremely complexof this paper was to investigate the effect of thick overburden on the stress and deformation of the built-incorridor in a rock-fill dam, and ascertain the damage causes of the corridor.The rationality of the analysis method for corridor with similar structure is another focus.The research conclusions may have a reference significance for the analysis of tunnels similar to built-in

Keywords: thick overburden     built-in corridor     stress     deformation     causes for damage     concrete damaged plasticity    

Rapid evaluation technology for CNC machine tool slide level based on built-in sensors

Yuqing ZHOU, Xuesong MEI, Gedong JIANG, Nuogang SUN,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 79-86 doi: 10.1007/s11465-009-0070-5

Abstract: To acquire level information, the built-in sensors test principle is profoundly investigated, and theThe analysis results of experiments show that it is simple, rapid, feasible, and reliable to use built-in

Keywords: slide level     built-in sensors     Stribeck effect     model identification    

Understanding building-occupant-microbiome interactions toward healthy built environments: A review

Shuai Li, Zhiyao Yang, Da Hu, Liu Cao, Qiang He

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1357-3

Abstract: Abstract • The built environment, occupants, and microbiomes constitute an integrated ecosystem. • ThisBuilt environments, occupants, and microbiomes constitute a system of ecosystems with extensive interactionsinteractions between these systems is essential to develop strategies for effective management of the builtNumerous studies have been conducted to characterize the microbiomes of the built environment.This review summarizes current progress in understanding the interactions between attributes of built

Keywords: Microbiome     Built Environment     Occupant     Health    

Built environment and management: exploring grand challenges and management issues in built environment

Liang WANG, Xiaolong XUE, Rebecca J. YANG, Xiaowei LUO, Hongying ZHAO

Frontiers of Engineering Management 2019, Volume 6, Issue 3,   Pages 313-326 doi: 10.1007/s42524-019-0049-9

Abstract: management research objects have gradually been transformed from micro-scale projects to macro-scale builtBuilt environment has driven the advancement of civilization through human history.Built environment has undergone developments and evolution processes as civilization grew.Today, technological advancements cause influences of built environment to encompass every aspect ofHowever, the concept of built environment remains unclear.

Keywords: built environment     innovation     sustainability     resilience     urbanization     digitalization     infrastructure    

Big Geodata Reveals Spatial Patterns of Built Environment Stocks Across and Within Cities in China

Zhou Huang,Yi Bao,Ruichang Mao,Han Wang,Ganmin Yin,Lin Wan,Houji Qi,Qiaoxuan Li,Hongzhao Tang,Qiance Liu,Linna Li,Bailang Yu,Qinghua Guo,Yu Liu,Huadong Guo,Gang Liu,

Engineering doi: 10.1016/j.eng.2023.05.015

Abstract: However, our existing knowledge on the patterns of built environment stocks across and particularly withinleveraged multi-source big geodata, machine learning, and bottom-up stock accounting to characterize the builtThe per capita built environment stock of many cities (240 tonnes per capita on average) is close totrades skylines for space, and reflects a concentration–dispersion–concentration pathway for spatialized built

Keywords: urban system engineering     built environment stock     spatial pattern     urban sustainability     big geodata    

Advanced nitrogen removal using pilot-scale SBR with intelligent control system built on three layer

YANG Qing, WANG Shuying, YANG Anming, GUO Jianhua, BO Fengyang

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 33-38 doi: 10.1007/s11783-007-0006-4

Abstract: Since eutrophication has become increasingly severe in China, nitrogen and phosphorous have been the concern of wastewater treatment, especially nitrogen removal. The stabilization of the intelligent control system and nitrogen removal efficiency were investigated in a pilot-scale aerobic-anoxic sequencing batch reactor (SBR) with a treatment capacity of 60 m/d. Characteristic points on the profiles of dissolved oxygen (DO), pH, and oxidation reduction potential (ORP) could exactly reflect the process of nitrification and denitrification. Using the intelligent control system not only could save energy, but also could achieve advanced nitrogen removal. Applying the control strategy water quality of the effluent could stably meet the national first discharge standard during experiment of 10 months. Even at low temperature ( = 13vH), chemical oxygen demand (COD) and total nitrogen (TN) in the effluent were under 50 and 5 mg/L, respectively.

Keywords: eutrophication     pilot-scale aerobic-anoxic     stabilization     oxidation reduction     nitrification    

Subway rail transit monitoring by built-in sensor platform of smartphone Research Articles

Jian-li Cong, Ming-yuan Gao, Yuan Wang, Rong Chen, Ping Wang,jlcong2019@my.swjtu.edu.cn,gaomingyuan@swu.edu.cn,wangy39@sustech.edu.cn,chenrong@home.swjtu.edu.cn,wping@home.swjtu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 8,   Pages 1119-1266 doi: 10.1631/FITEE.1900242

Abstract: Smartphone, as a smart device with multiple built-in sensors, can be used for collecting information

Keywords: 加速度数据;智能监测;内置传感器;智能手机;地铁    

Development of hydrogen transport corridor along Huaihe River ecological economic zone based on SWOT

Zhang Liangliang,Liu Yong and Zhou Lingyun

Strategic Study of CAE 2015, Volume 17, Issue 3,   Pages 96-99

Abstract: In China, we have built a non-grid-connected wind power hydrogen demonstration project in Jiangsu coastAnd the government has planned the transport corridor construction along thousands of miles along Huaihe

Keywords: hydrogen energy cars; transport corridor; hydrogen refueling stations; SWOT method    

Comparative analysis of impact of human occupancy on indoor microbiomes

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1383-1

Abstract:

• Exposure to indoor microbiomes is a public health concern in educational facilities.

Keywords: Built environment     Indoor microbiome     Occupant     Building     Sequencing    

Visual-feature-assisted mobile robot localization in a long corridor environment Research Article

Gengyu GE, Yi ZHANG, Wei WANG, Lihe HU, Yang WANG, Qin JIANG,gegengyu_2021@163.com,zhangyi@cqupt.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 6,   Pages 876-889 doi: 10.1631/FITEE.2200208

Abstract: For areas with repeated, symmetrical, or similar structures, such as a long corridor, the conventionalcrucial problem, this paper presents a novel coarse-to-fine paradigm that uses to assist in a long corridorIn the moving process, a grid map is built using the laser-based SLAM method.In addition, the method works well when the is kidnapped to another position in the corridor.

Keywords: Mobile robot     Localization     Simultaneous localization and mapping (SLAM)     Corridor environment     Particle    

Spatial System of National Parks and Protected Areas in Qinba Mountain Area

Zhou Yuxia, Liu Hailong, Zhao Zhicong, Yang Rui

Strategic Study of CAE 2020, Volume 22, Issue 1,   Pages 86-95 doi: 10.15302/JSSCAE2020.01.009

Abstract: It is suggested that a Funiu Mountain National Park should be built in this area and a Qinling NationalOn this basis, natural parks of other types can be newly built to further improve the existing gaps in

Keywords: Qinba Moutain Area     national park     protected area system     protection gap     ecological corridor    

Study on the Spatial Patterns of the Qinba Mountain Area Based on High-Speed Transportation Networks

Wu Tinghai and Zhang Neng

Strategic Study of CAE 2016, Volume 18, Issue 5,   Pages 52-59 doi: 10.15302/J-SSCAE-2016.05.008

Abstract:

Improving regional accessibility is an important mean to carry out poverty alleviation and realize sustainable development in the Qinba Mountain Area of China. This paper studies the accessibility of central cities in the Qinba Mountain Area to surrounding urban agglomerations, and determines the spatial patterns of the region by using the high-speed transportation network identified in National Highway Network Planning (2013—2030) and China's Medium and Long Term Railway Network Planning. The study finds that with the development and construction of the rapid transit network planned by our country, three main radial urban corridors from Xi'an to Wanzhou, Xiangyang, and Luoyang, separately and three secondary urban corridors, namely, the Xi’an—Tianshui, Xi'an—Guangyuan, and Dazhou—Xiangyang—Nanyang—Luoyang corridors will be formed, in Qinba Mountain Area. These urban corridors will lead to the emergence of four vast green fields which are taking Longnan, Bazhong, Shiyan, and Luanchuan as the core. This paper suggests that the future spatial planning should establish the spatial order in the Qinba Mountain Area and arrange the urban corridors and the vast green fields properly to achieve a balance between protection and development.

Keywords: the Qinba Mountain Area     spatial patterns     high-speed transportation network     spatial planning     urban corridor    

The Tessellation Rule and Properties Programming of Origami Metasheets Built with a Mixture of Rigid Article

Jiayao Ma, Shixi Zang, Yan Chen, Zhong You

Engineering 2022, Volume 17, Issue 10,   Pages 82-92 doi: 10.1016/j.eng.2022.02.015

Abstract:

Metamaterials constructed from origami units of different types and behaviors could potentially offer a broader scope of mechanical properties than those formed from identical unit types. However, the geometric design rules and property programming methods for such metamaterials have yet to be extensively explored. In this paper, we propose a new kind of origami metasheet by incorporating a family of different square-twist units. The tessellation rule of these metasheets is established to allow compatible mountain–valley crease assignments and geometric parameters among neighboring units. We demonstrate through experiments that the energy, initial peak force, and maximum stiffness of the metasheets can be obtained by a summation of the properties of the constitutional units. Based on this, we are able to program the mechanical properties of the metasheets over a wide range by varying the types and proportions of the units, as well as their geometric and material parameters. Furthermore, for a metasheet with a fixed number of units, all the geometrically compatible tessellations can be folded out of the same pre-creased sheet material by simply changing the mountain–valley assignments, thereby allowing the properties of the metasheet to be re-programmed based on specific requirements. This work could inspire a new class of programmable origami metamaterials for current and future mechanical and other engineering applications.

Keywords: Origami metamaterials     Metasheets     Square-twist pattern     Non-periodic tessellation     Programmability    

Title Author Date Type Operation

Analysis on damage causes of built-in corridor in core rock-fill dam on thick overburden: A case study

Jia’ao YU; Zhenzhong SHEN; Zhangxin HUANG

Journal Article

Rapid evaluation technology for CNC machine tool slide level based on built-in sensors

Yuqing ZHOU, Xuesong MEI, Gedong JIANG, Nuogang SUN,

Journal Article

Understanding building-occupant-microbiome interactions toward healthy built environments: A review

Shuai Li, Zhiyao Yang, Da Hu, Liu Cao, Qiang He

Journal Article

Built environment and management: exploring grand challenges and management issues in built environment

Liang WANG, Xiaolong XUE, Rebecca J. YANG, Xiaowei LUO, Hongying ZHAO

Journal Article

Big Geodata Reveals Spatial Patterns of Built Environment Stocks Across and Within Cities in China

Zhou Huang,Yi Bao,Ruichang Mao,Han Wang,Ganmin Yin,Lin Wan,Houji Qi,Qiaoxuan Li,Hongzhao Tang,Qiance Liu,Linna Li,Bailang Yu,Qinghua Guo,Yu Liu,Huadong Guo,Gang Liu,

Journal Article

Advanced nitrogen removal using pilot-scale SBR with intelligent control system built on three layer

YANG Qing, WANG Shuying, YANG Anming, GUO Jianhua, BO Fengyang

Journal Article

Subway rail transit monitoring by built-in sensor platform of smartphone

Jian-li Cong, Ming-yuan Gao, Yuan Wang, Rong Chen, Ping Wang,jlcong2019@my.swjtu.edu.cn,gaomingyuan@swu.edu.cn,wangy39@sustech.edu.cn,chenrong@home.swjtu.edu.cn,wping@home.swjtu.edu.cn

Journal Article

Development of hydrogen transport corridor along Huaihe River ecological economic zone based on SWOT

Zhang Liangliang,Liu Yong and Zhou Lingyun

Journal Article

Comparative analysis of impact of human occupancy on indoor microbiomes

Journal Article

Ertan Hydropower Station-The Largest Hydropower Station in China Built in this Century

黄新生

Journal Article

Visual-feature-assisted mobile robot localization in a long corridor environment

Gengyu GE, Yi ZHANG, Wei WANG, Lihe HU, Yang WANG, Qin JIANG,gegengyu_2021@163.com,zhangyi@cqupt.edu.cn

Journal Article

Spatial System of National Parks and Protected Areas in Qinba Mountain Area

Zhou Yuxia, Liu Hailong, Zhao Zhicong, Yang Rui

Journal Article

Study on the Spatial Patterns of the Qinba Mountain Area Based on High-Speed Transportation Networks

Wu Tinghai and Zhang Neng

Journal Article

The Tessellation Rule and Properties Programming of Origami Metasheets Built with a Mixture of Rigid

Jiayao Ma, Shixi Zang, Yan Chen, Zhong You

Journal Article