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Gushing metal chain

Alexander BELYAEV,Alexander SUKHANOV,Alexander TSVETKOV

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1, Pages 95-100 doi: 10.1007/s11465-016-0377-y

Abstract:

This article addresses the problem in which a chain falls from a glass from some height.For this purpose, the modified Сayley ’s problem of falling chain given its rise due to the centrifugal

Keywords： chain fountain Meshchersky equation Cayley’s problem

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Distributed governance of Solar Radiation Management geoengineering: A possible solution to SRM’s “free-driver” problem?

Andrew LOCKLEY

Frontiers of Engineering Management 2019, Volume 6, Issue 4, Pages 551-556 doi: 10.1007/s42524-019-0055-y

Abstract: However, this low cost leads to a risk of controversial unilateral intervention—the “free-driver” problemgovernance model of consensually-constrained unilateralism: Countries’ authority is limited to each state’s

Keywords： geoengineering Solar Radiation Management governance decentralised

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Achievements, Problems and Prospects in China´s Water Conservancy Construction

Pan Jiazheng

Strategic Study of CAE 2002, Volume 4, Issue 2, Pages 42-51

Abstract:

In the first part of the paper, main achievements and progress in water conservancy construction of China over the past half century are briefly summarised in respect of flood-control, irrigation, water supply and hydroenergy utilization, which are also reflected in sci-tech, education and management. In the second part, while affirming the achievements, the problems and shortcomings are analyzed. They mainly include： the flood-control standard is still at low level and reliable and complete water-control systems have not been established; water level of floods are increasingly raising causing the increase of flood prevention burden and risks; overexploiting of water resources and serious waste of water; water contamination and water environment deterioration ;the incompleteness, low quality, extensive management and low economic results of water conservancy projects, and so on. The paper holds that these problems should be attributed to the one-sided ideology and improper policies. Finally, in line with the requirement of the development and rejuvenation of China, the paper forecasts the tasks and goals of water conservancy construction in the days to come.

Keywords： China's water conservancy achievements problem and prospects

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Detection of void and metallic inclusion in 2D piezoelectric cantilever beam using impedance measurements

S. SAMANTA, S. S. NANTHAKUMAR, R. K. ANNABATTULA, X. ZHUANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3, Pages 542-556 doi: 10.1007/s11709-018-0496-0

Abstract: followed by an iterative optimization algorithm based on univariate method has been used to solve the problem

Keywords： piezoelectricity impedance curve mode shapes inverse problem flaw detection curve shifting

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Discussion on Problem-Based Engineering Management System

Qiao Xiang

Frontiers of Engineering Management 2015, Volume 2, Issue 3, Pages 249-260 doi: 10.15302/J-FEM-2015054

Abstract: The paper puts forward the idea of problem-based engineering management, expounds its connotation and

Keywords： problem engineering management system

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Airline planning and scheduling: Models and solution methodologies

Lei ZHOU, Zhe LIANG, Chun-An CHOU, Wanpracha Art CHAOVALITWONGSE

Frontiers of Engineering Management 2020, Volume 7, Issue 1, Pages 1-26 doi: 10.1007/s42524-020-0093-5

Abstract: General formulation, widely used solution approaches, and important extensions are presented for each problem

Keywords： airline planning fleet assignment problem aircraft routing problem crew pairing problem crew rosteringproblem crew scheduling problem integrated planning

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A solution to stochastic unit commitment problem for a wind-thermal system coordination

B. SARAVANAN,Shreya MISHRA,Debrupa NAG

Frontiers in Energy 2014, Volume 8, Issue 2, Pages 192-200 doi: 10.1007/s11708-014-0306-x

Abstract: Unit commitment (UC) problem is one of the most important decision making problems in power system.In this paper the UC problem is solved by considering it as a real time problem by adding stochasticityaddressed is the achievement of an economic unit commitment solution after solving UC as a real time problemThis paper proposes a hybrid approach to solve the stochastic unit commitment problem considering thevolatile nature of wind and formulating the UC problem as a chance constrained problem in which the

Keywords： unit commitment (UC) randomness wind generation univariate chance constrained

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Solving unit commitment problem using a novel version of harmony search algorithm

Roozbeh MORSALI,Tohid JAFARI,Amirhossein GHODS,Mohammad KARIMI

Frontiers in Energy 2014, Volume 8, Issue 3, Pages 297-304 doi: 10.1007/s11708-014-0309-7

Abstract: novel structure was proposed for improving harmony search (HS) algorithm to solve the unit comment (UC) problem

Keywords： generation scheduling harmony search (HS) algorithm intelligent technique unit commitment

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Transient analysis of thermoelastic contact problem of disk brakes

Ali BELHOCINE, Mostefa BOUCHETARA

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2, Pages 150-159 doi: 10.1007/s11465-013-0266-6

Abstract:

The main purpose of this study is to analyze the thermomechanical behavior of the dry contact between the brake disk and pads during the braking phase. The simulation strategy is based on computer code ANSYS11. The modeling of transient temperature in the disk is actually used to identify the factor of geometric design of the disk to install the ventilation system in vehicles. The thermal-structural analysis is then used with coupling to determine the deformation established and the Von Mises stresses in the disk, the contact pressure distribution in pads. The results are satisfactory compared to those found in the literature.

Keywords： brake disks heat flux heat-transfer coefficient Von Mises stress contact pressure

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A solution to the unit commitment problem—a review

B. SARAVANAN, Siddharth DAS, Surbhi SIKRI, D. P. KOTHARI

Frontiers in Energy 2013, Volume 7, Issue 2, Pages 223-236 doi: 10.1007/s11708-013-0240-3

Abstract: Unit commitment (UC) is an optimization problem used to determine the operation schedule of the generatingMany algorithms have been invented in the past five decades for optimization of the UC problem, but stillresearchers are working in this field to find new hybrid algorithms to make the problem more realistic

Keywords： unit commitment (UC) optimization deterministic load stochastic load evolutionary programming (EP) hybrid

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Japan’s 10th Technology Foresight: Insights and Enlightenment

Sun Shengkai,Wei Chang,Song Chao,Pei Yu

Strategic Study of CAE 2017, Volume 19, Issue 1, Pages 133-142 doi: 10.15302/J-SSCAE-2017.01.019

Abstract: This paper introduces the methodology, modes, implementation system, and survey process of Japan's

Keywords： Japan technology foresight problem-solution mode scenario planning Delphi method

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Application of Satellite Gravity Gradiometry Data to the Refinement of the Earth’s Gravity Field

Ning Jinsheng,Luo Zhicai,Chen Yongqi

Strategic Study of CAE 2002, Volume 4, Issue 7, Pages 23-28

Abstract: geodesy is to determine the geoid with centimeter level and to develop the ultra high global earth’ssatellite gravity gradiometry, and then discusses some theories and methods for refining the earth´s

Keywords： satellite gravity gradiometry satellite gravity gradiometry boundary value problem earth's gravity field

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Hydrocele of the canal of Nuck — an old problem revisited

John Bunni, Mark Gillam, Ian Michael Pope

Frontiers of Medicine 2013, Volume 7, Issue 4, Pages 517-519 doi: 10.1007/s11684-013-0300-4

Abstract: This was excised and the patient’s symptoms resolved and she was discharged home the following

Keywords： canal of Nuck hernia embryology

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A solution to unit commitment problem using invasive weed optimization algorithm

B. SARAVANAN, E. R. VASUDEVAN, D. P. KOTHARI

Frontiers in Energy 2013, Volume 7, Issue 4, Pages 487-494 doi: 10.1007/s11708-013-0279-1

Abstract: Unit commitment (UC) is one of the most important aspect of power generation in the world today. Though, there is no method to find the exact optimized solution, there exists several meta-heuristic algorithms to determine the close to exact solution. This paper proposes a novel solution to effectively determine UC and generation cost using the technique of invasive weed optimization (IWO). The existing technique distributes the load demand among all the generating units. The method proposed here utilizes the output of UC obtained by using the Lagrangian relaxation (LR) method and calculates the required generation from only the plants that are ON discarding the OFF generator units and thereby giving a faster and more accurate response. Moreover, the results show the comparison between the LR-particle swarm optimization (PSO) and LR-IWO, and prove that the cost of generation for a 4 unit, 8 hour schedule is much less in the case of IWO when compared to PSO.

Keywords： Lagrangian relaxation (LR) invasive weed optimization (IWO) economic dispatch optimization fuel cost seed fitness

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Method for solving the nonlinear inverse problem in gas face seal diagnosis based on surrogate models

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0689-z

Abstract: computational cost of inferring the input fault parameters for the observed output or solving the inverse problemThe presented work develops a surrogate-model-assisted method for solving the nonlinear inverse problem

Keywords： surrogate model gas face seal fault diagnosis nonlinear dynamics tribology