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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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Importance measure-based maintenance strategy optimization: Fundamentals, applications and future directions

Frontiers of Engineering Management doi: 10.1007/s42524-024-4003-0

Abstract: Numerous maintenance strategies have been proposed in the literature related to reliability. This paper focuses on the utilization of reliability importance measures to optimize maintenance strategies. We analyze maintenance strategies based on importance measures and identify areas lacking sufficient research. The paper presents principles and formulas for advanced importance measures within the context of optimizing maintenance strategies. Additionally, it classifies methods of maintenance strategy optimization according to importance measures and outlines the roles of these measures in various maintenance strategies. Finally, it discusses potential challenges that optimization of maintenance strategies based on importance measures may encounter with future technologies.

Keywords： maintenance strategy importance measure reliability maintenance cost

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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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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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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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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

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Experience and Revelation in Saving Oil in Transport Abroad

Hu Xiaochun,Wang Xieqing

Strategic Study of CAE 2005, Volume 7, Issue 3, Pages 1-5

Abstract:

Transport has become the dominant oil-consuming sector in the world. Oil use in the sector has increased steadily over the past 30 years and now represents nearly two-thirds of total IEA oil consumption. This article examines a variety of options and strategies in transport of the developed countries to reduce oil consumption. Some suggestions are proposed for saving oil in transport of China.

Keywords： transport oil-saving measure

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Socialized care services for the aged population: System construction and support measures

Frontiers of Engineering Management 2023, Volume 10, Issue 2, Pages 339-353 doi: 10.1007/s42524-022-0208-2

Abstract: policies in China, and proposes a research paradigm that integrates system construction and support measure

Keywords： socialized care service for the elderly system construction support measure

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Afeature selection approach based on a similarity measure for software defect prediction Article

Qiao YU, Shu-juan JIANG, Rong-cun WANG, Hong-yang WANG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 11, Pages 1744-1753 doi: 10.1631/FITEE.1601322

Abstract: To fully measure the correlation between different features and the class, we present a feature selectionapproach based on a similarity measure (SM) for software defect prediction.

Keywords： Software defect prediction Feature selection Similarity measure Feature weights Feature ranking list

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Facing Challenges and Searching Chances at the Same Time——The Present Status of Chinese Flower Enterprise

Chen Junyu

Strategic Study of CAE 2002, Volume 4, Issue 10, Pages 17-20

Abstract:

This report points out that the flower enterprise is a promising enterprise, growing up continuously and becoming better and better. The author then compares and analyses differences and commonalities between the Chinese flower enterprise and the world flower enterprise. Using ’99 Kunming International Horticultural Exposition as an example, the author is convinced that Chinese gardens and flowers may reach the first level in the world, but “Chinese Characteristics” ought to be strengthened significantly. At the beginning of China’s becoming a member of WTO, a very good way has been found for facing challenges and utilizing good chances——the so-called “Hua-Hui Xin Si Hua”，viz,①traditional Chinese famous flowers internationalized;②world famous flowers becoming“sinicized” and localized;③ wild flowers introduced and acclimatized;④flower production and management highly specialized and in large-scale. It is possible to reach the present level of flower development in the world in 50 years or more. Then，China will be turned from the “Mother of Gardens” to the “Kingdom of World Flowers”.

Keywords： challenges searching chances counter-measure flowers ornamentals flower industry prospects

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Modest Proposal on Logistics Industry and Logistics Technology of China

Luo Yixin,Xu Ewei

Strategic Study of CAE 2004, Volume 6, Issue 6, Pages 79-84

Abstract:

In order to propel the logistics industry of China forward, the achievements in Chinese modern logistics industry development are described. Problems concerning the logistics programme, logistics standard, logistics technology, logistics personnel,etc. , are pointed out. To solve these problems, appropriate measures have been proposed.

Keywords： logistics development problem measure

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Time-dependent deviation of bridge pile foundations caused by adjacent large-area surcharge loads in soft soils and its preventive measures

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 2, Pages 184-201 doi: 10.1007/s11709-024-1047-5

Abstract: Time-dependent characteristics (TDCs) have been neglected in most previous studies investigating the deviation mechanisms of bridge pile foundations and evaluating the effectiveness of preventive measures. In this study, the stress-strain-time characteristics of soft soils were illustrated by consolidation-creep tests based on a typical engineering case. An extended Koppejan model was developed and then embedded in a finite element (FE) model via a user-material subroutine (UMAT). Based on the validated FE model, the time-dependent deformation mechanism of the pile foundation was revealed, and the preventive effect of applying micropiles and stress-release holes to control the deviation was investigated. The results show that the calculated maximum lateral displacement of the cap differs from the measured one by 6.5%, indicating that the derived extended Koppejan model reproduced the deviation process of the bridge cap-pile foundation with time. The additional load acting on the pile side caused by soil lateral deformation was mainly concentrated within the soft soil layer and increased with the increase in load duration. Compared with t = 3 d (where t is surcharge time), the maximum lateral additional pressure acting on Pile 2# increased by approximately 47.0% at t = 224 d. For bridge pile foundation deviation in deep soft soils, stress-release holes can provide better prevention compared to micropiles and are therefore recommended.

Keywords： foundation surcharge load soft soil time-dependent deformation interaction mechanism preventive measure

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Improvement to observability measures of LFO modes in power systems with DFIGs

Shenghu LI

Frontiers in Energy 2021, Volume 15, Issue 2, Pages 539-549 doi: 10.1007/s11708-019-0617-z

Abstract: The definition of the observability measure is improved to consider the initial output and the attenuation

Keywords： wind power system low-frequency oscillation (LFO) observability measure sensitivity doubly-fed induction

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Structure Analysis, Forecasting and Urgent Measure for Surprised Severe Weather

OuYang Shoucheng,Xie Na,Hao Liping

Strategic Study of CAE 2005, Volume 7, Issue 9, Pages 9-13

Abstract:

In this paper the structure characteristics of surprised rain gust and storm in Beijing and Shanghai and heavy rain gust in NE Sichuan are analyzed, and the surprised severe weather is discussed by V - 3θchard. The results showed that the surprised weather can be forecast. Facilities for water drainage water storage and windbreak should be allocated.

Keywords： blown-ups structure analysis surprised severe weather taking precautions against severe weather