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Improved resilience measure for component recovery priority in power grids

Frontiers of Engineering Management 2021, Volume 8, Issue 4, Pages 545-556 doi: 10.1007/s42524-021-0161-5

Abstract: Considering the severity of power grid disasters, an improved power grid resilience measure and its corresponding

Keywords： resilience measure power grid importance measure component recovery

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Study on key construction technologies of Xiamen Xiang’an subsea tunnel

Fu Hongxian,Liu Yongsheng,Guo Yanjing,Huang Mingqi

Strategic Study of CAE 2009, Volume 11, Issue 7, Pages 30-34

Abstract:

Xiamen Xiang'an subsea tunnel is the first subsea tunnel in China, whose geological conditions in the land are strongly weathered granite with enriched groundwater, shallow-buried excavation method is adopted. During the tunnel construction, the deformation of tunnel support is great. It is important to seek for a reasonable countermeasure to restrict the large deformation to ensure safety construction and advance through trials in locale. The arch crown settlement and level convergence are controlled effectively. Its subsea geological condition is granite.Drilling hole and blasting parameters trials are carried out through construction, and better blasting plan and parameters are gained. The ranges of rock crash of the tunnels are measured by using ultrasonic instrument and displacement record.

Keywords： Xiamen Xiang’an subsea tunnel excavation method working procedure controlling measure blasting

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Robust ensemble of metamodels based on the hybrid error measure

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3, Pages 623-634 doi: 10.1007/s11465-021-0641-7

Abstract: Metamodels have been widely used as an alternative for expensive physical experiments or complex, time-consuming computational simulations to provide a fast but accurate analysis. However, challenge remains in the prior determination of the most suitable metamodel for a particular case because of the lack of information about the actual behavior of a system. In addition, existing studies on metamodels have largely restricted on solving deterministic problems (e.g., data from finite element models), whereas some real-life engineering problems (e.g., data from physical experiment) are stochastic problems with noisy data. In this work, a robust ensemble of metamodels (EMs) is proposed by combining three regression stand-alone metamodels in a weighted sum form. The weight factor is adaptively determined according to the hybrid error metric, which combines global and local error measures to improve the accuracy of the EMs. Furthermore, three typical individual metamodels that can filter noise are selected to construct the EMs to extend their application in practical engineering problems. Three well-known benchmark problems with different levels of noise and three engineering problems are used to verify the effectiveness of the proposed EMs. Results show that the proposed EMs have higher accuracy and robustness than the individual metamodels and other typical EMs in major cases.

Keywords： metamodel ensemble of metamodels hybrid error measure stochastic problem

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Structure controlling and process scale-up in the fabrication of nanomaterials

Chunzhong LI,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1, Pages 18-25 doi: 10.1007/s11705-009-0305-3

Abstract: Nanotechnology is already having a significant commercial impact, and will very certainly have a much greater impact in the future. The research on process engineering and scale-up will be very important for the commercial production and application of nanomaterials, because the properties and structure of nanomaterials are not only determined by the nucleation and growth process, but also strongly affected by the engineering properties, such as the mixing, the heat and mass transfer, and also the distribution of temperature, concentration, etc. This paper will present some research work in our laboratory on the fabrication of nanomaterials. Based on the chemical engineering principle and methods, many kinds of novel nanomaterials can be synthesized and their structure can be easily controlled through adjusting the parameters of the fluid mixing, and the distribution of temperature, residence time and concentration, etc. By using the micro-mixing, heat and mass transfer and reaction control methods, the host-guest nanocomposites have been assembled and assumed as the novel electroanalytical sensing nanobiocomposite materials. Based on the principles of chemical engineering, the manufacturing technologies for magnetic powders, calcium carbonate, and titanium dioxide have been developed for commercial-scale production, and the largest production scale has reached 15 kt/year.

Keywords： scale-up significant commercial electroanalytical engineering laboratory

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Four kinds of capping materials for controlling phosphorus and nitrogen release from contaminated sediment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1463-x

Abstract:

• Lanthanum modified bentonite (LMB) can effectively absorb phosphorus (P).

Keywords： Sediment Eutrophication Thin-layer capping Phosphorus Nitrogen Aluminum-based P-inactivation agent

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Search for a natural scientific measure of economy

John E COULTER

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1, Pages 111-118 doi: 10.1007/s11783-011-0285-7

Abstract: 1950s, is being researched, developed, and applied, especially in China, driven by the desperation to measure

Keywords： climate change financial crisis energy exergy environment

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Subspace transform induced robust similarity measure for facial images

Jian Zhang, Heng Zhang, Li-ling Bo, Hong-ran Li, Shuai Xu, Dong-qing Yuan,zhangjian@jou.edu.cn,zhangheng@jou.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 9, Pages 1267-1412 doi: 10.1631/FITEE.1900552

Abstract: Similarity measure has long played a critical role and attracted great interest in various areas suchNevertheless, there remains the issue of developing an efficient two-dimensional (2D) robust similarity measurethe properties of subspace, we develop an effective 2D technique, named transformation similarity measureWe present the mathematical features and some odds to reveal the feasible and robust measure mechanism

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Spray characteristics and controlling mechanism of fuel containing CO

Zhen HUANG, Jin XIAO, Xinqi QIAO, Gaozhi JIANG, Yiming SHAO, Seiichi SHIGA, Yasuhiro DAISHO

Frontiers in Energy 2012, Volume 6, Issue 1, Pages 80-88 doi: 10.1007/s11708-012-0180-3

Abstract: This paper presents studies of spray characteristics and controlling mechanism of fuel containing CONew insight into the controlling mechanism of atomization of the fuel containing CO was provided.

Keywords： spray characteristics fuel atomization fuel containing CO₂

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Factors controlling

Chengkun WANG, Xiaojian ZHANG, Chao CHEN, Jun WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2, Pages 151-157 doi: 10.1007/s11783-013-0482-7

Abstract: The formation of cancinogenic nitrosamines, esp. -nitrosodimethylamine (NDMA) in water and wastewater treatment plants has drawn much attention in recent years. Dissolved organic matter from the transported Luan River water as water source of Tianjin was fractionated with different XAD resins and a series of ultra-filtration membranes with molecular weight (MW) cut-offs of 5k Da, 3k Da, and 1k Da, respectively. The NDMA yields from the raw water and each fraction were measured to investigate their role in NDMA yield. Results indicated that the hydrophilic fraction had a higher NDMA yield than those of hydrophobic fraction and transphilic fraction. The fraction with MW below 1k Da had a higher NDMA yield than that with larger MW. NDMA formation increased as the dissolved organic carbon (DOC) to dissolved organic nitrogen (DON) ratio decreased, which indicated that DON might serve as the real important precursor for NDMA. The correlation between NDMA yield and specific ultraviolet absorbance at 254 nm (SUVA ) suggested that the latter might not represent the specific precursors for NDMA in the water. Besides the water quality, the influences of pH, disinfectant dosage, and disinfection contact time on the formation of NDMA were also examined. These results will help water treatment plants establish measures to control this harmful disinfection by-product.

Keywords： N-nitrosodimethylamine (NDMA) disinfection by-product dissolved organic nitrogen (DOC) hydrophilic molecular weight (MW) specific ultraviolet absorbance at 254 nm (SUVA₂₅₄)

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Shape/size controlling syntheses, properties and applications of two-dimensional noble metal nanocrystals

Baozhen An,Mingjie Li,Jialin Wang,Chaoxu Li

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3, Pages 360-382 doi: 10.1007/s11705-016-1576-0

Abstract: Two dimensional (2D) nanocrystals of noble metals (e.g., Au, Ag, Pt) often have unique structural and environmental properties which make them useful for applications in electronics, optics, sensors and biomedicines. In recent years, there has been a focus on discovering the fundamental mechanisms which govern the synthesis of the diverse geometries of these 2D metal nanocrystals (e.g., shapes, thickness, and lateral sizes). This has resulted in being able to better control the properties of these 2D structures for specific applications. In this review, a brief historical survey of the intrinsic anisotropic properties and quantum size effects of 2D noble metal nanocrystals is given and then a summary of synthetic approaches to control their shapes and sizes is presented. The unique properties and fascinating applications of these nanocrystals are also discussed.

Keywords： two-dimension noble metal nanocrystal surface plasmon controllable synthesis

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Time-series prediction based on global fuzzy measure in social networks

Li-ming YANG,Wei ZHANG,Yun-fang CHEN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 10, Pages 805-816 doi: 10.1631/FITEE.1500025

Abstract: network by replacing the traditional relations with fuzzy relation and calculating the global fuzzy measure

Keywords： Time-series network Fuzzy network Fuzzy Markov chain

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Asymmetric deformation mechanism in deep soft rock tunnel and controlling countermeasures in Datun Mine

Fu Qingguo and Zou Chaoyang

Strategic Study of CAE 2011, Volume 13, Issue 11, Pages 102-106

Abstract: This research provides a preliminary theoretical basis for the controlling countermeasures of asymmetric

Keywords： deep soft rock tunnel asymmetric deformation controlling countermeasures

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Digitalization optical open loop test system for fiber optic gyroscope

ZHANG Deng-wei, SHU Xiao-wu, MU Xu-dong, LIU Cheng

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4, Pages 434-438 doi: 10.1007/s11465-006-0053-8

Abstract: With a digital sampling and processing system designed with VC++ in Windows platform, the real-time controlling

Keywords： stability real-time controlling standardization controlling procedure complete digitalization

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The Research of All-set Method in Market Intelligent Economy Controlling

Bao Jifeng,Liu Yang,He Zhongxiong

Strategic Study of CAE 2005, Volume 7, Issue 5, Pages 84-89

Abstract: the utilization of the all-set method and ME altering in the problem of market intelligent economy controllingThe authors alter the primary ME of economical body by means of all-set, jieke theory, vague controllingThe authors combine these subjects and propose the all-set market intelligent economy controlling theory

Keywords： market economy big system and all-set the research of controlling method practical examples

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Overlap maximum matching ratio (OMMR): a new measure to evaluate overlaps of essential modules

Xiao-xia ZHANG,Qiang-hua XIAO,Bin LI,Sai HU,Hui-jun XIONG,Bi-hai ZHAO

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 4, Pages 293-300 doi: 10.1631/FITEE.1400282

Abstract: Protein complexes are the basic units of macro-molecular organizations and help us to understand the cell’s mechanism. The development of the yeast two-hybrid, tandem affinity purification, and mass spectrometry high-throughput proteomic techniques supplies a large amount of protein-protein interaction data, which make it possible to predict overlapping complexes through computational methods. Research shows that overlapping complexes can contribute to identifying essential proteins, which are necessary for the organism to survive and reproduce, and for life’s activities. Scholars pay more attention to the evaluation of protein complexes. However, few of them focus on predicted overlaps. In this paper, an evaluation criterion called overlap maximum matching ratio (OMMR) is proposed to analyze the similarity between the identified overlaps and the benchmark overlap modules. Comparison of essential proteins and gene ontology (GO) analysis are also used to assess the quality of overlaps. We perform a comprehensive comparison of serveral overlapping complexes prediction approaches, using three yeast protein-protein interaction (PPI) networks. We focus on the analysis of overlaps identified by these algorithms. Experimental results indicate the important of overlaps and reveal the relationship between overlaps and identification of essential proteins.

Keywords： Protein-protein interaction network Essential protein modules Overlap Overlap maximum matching ratio