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An Ant Colony Optimization Algorithm for Quadratic Assignment Problem

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An Ant Colony Optimization Algorithm for Quadratic Assignmen...

Vertical Displacement Measurement in a Slow-Moving Sinkhole Using BOTDA

The Twelfth Asia Pacific Industrial Engineering ＆ Management Systems Conference(APIEMS 2011)

作者： Kun-Chih Wu Ching-Jung Ting lionel francisco casanova gonzalez Department of Industrial Engineering and Management Yuan Ze University 135 Yuan Tune Road.Chune-Li.Taiwan 32003China

＜正＞The Quadratic Assignment Problem（QAP） is a well-known and important NP-hard *** optimization problems are related to QAP,such as facilities layout problem,airport gate assignment problem,and backboard wiring *** QAP considers assigning N facilities to N locations,where the cost function is composed by the multiplications of the distance between two locations and flow between two *** objective is to find the minimum total *** this paper,we develop an Ant Colony Optimization（ACO） to solve the problem,in which a specific heuristic information and local search are both well *** test the efficiency and effectiveness of our ACO,we run the ACO on the benchmark instances for facilities location problem obtained from the QAPLIB web *** experiment results show that our ACO can achieve the competing results on the benchmark instances.

关键词： Quadratic Assignment Problem Ant Colony Optimization Heuristics

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Photonic Sensors 2024年第1期14卷 23-39页

作者： Pascual SEVILLANO Javier PRECIADO-GARBAYO Jorge SEVIL francisco GUTIERREZ Juan JMARTiNEZ Sonia MARTiN-LOPEZ Miguel gonzalez-HERRAEZ Aragon Institute of Engineering Research(I3A) Universidad de ZaragozaZaragoza 50018Spain Electronic Enginering and Communicaton Dpartment EINAUniversidad de ZaragzaZaragza 50018Spain Aragon Photonics Labs. Zaragoza 50009Spain Department of Earth Sciences Universidad de ZaragozaZaragoza 50009Spain Department of Electronics Escuela Politecnica SuperiorUniversidad de AlcalaMadrid 28805Spain

The effectiveness of monitoring and early-warning systems for ground deformation phenomena,such as sinkholes,depends on their ability to accurately resolve the ongoing ground displacement and detect the subtle deformation preceding catastrophic *** sinkholes with a slow subsidence rate and diffuse edges pose a significant challenge for subsidence monitoring due to the low deformation rates and limited lateral strain *** this work,we satisfactorily illustrate the practicality of the Brillouin optical time domain analysis(BOTDA)to measure the spatial-temporal patterns of the vertical displacement in such challenging slow-moving sagging *** assess the performance of the approach,we compare the strain recorded by the distributed optical fiber sensor with the vertical displacement measured by high-precision *** results show a good spatial correlation with the ability to identify the maximum subsidence *** is also a good temporal correlation with the detection of an acceleration phase in the subsidence associated with a flood event.

关键词： Distributed fiber optic sensing(DFOS) vertical displacement measurement slow subsidence rate sinkhole hazard early-warning system

Decoupled Photovoltaic Power Ramp-rate Calculation Method for Perturb and Observe Algorithms

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Journal of Modern Power Systems and Clean Energy 2022年第4期10卷 932-940页

作者： Jose Miguel Riquelme-Dominguez francisco M.gonzalez-Longatt Sergio Martinez Electrical Engineering Department Escuela Tecnica Superior de Ingenieros IndustrialesUniversidad Politecnica de Madrid28006 MadridSpain Department of Electrical Engineering Information Technology and CyberneticsUniversity of South-Eastern Norway3918 PorsgrunnNorway

As photovoltaic energy increasingly penetrates in power systems,transmission system operators have started to request its participation in providing ancillary *** of the demanded services is the power ramp-rate control(PRRC),which attempts to limit the power ramps produced by intermittent irradiance *** order to achieve the desired objective,solutions based on storage systems or modifying the maximum power point tracking(MPPT)in perturb and observe(P&O)algorithms are commonly *** starting point in PRRC is the determination of the instantaneous power ramprate,and different methods have been proposed in the literature for its ***,the accuracy and computational speed of existing procedures can be improved,which may be critical in situations with rapid irradiance *** this paper,a decoupled photovoltaic power ramp-rate calculation method is presented,in which the effect of variable irradiance and the P&O algorithm are computed *** proposed method has been theoretically demonstrated and tested through simulation and experimental *** results show that it can improve the previous methods in terms of accuracy and computation *** validation with hardware-inthe-loop demonstrates the suitability of the proposed method for real-time applications,even in presence of noisy measurements.

关键词： Hardware-in-the-loop maximum power point tracking perturb and observe photovoltaic power ramp-rate control ramp-rate calculation method

Turning carbon dots into selenium bearing nanoplatforms with in vitro GPx-like activity and pro-oxidant activity

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Nano Research 2023年第5期16卷 7784-7791页

作者： Laura Perez-Garrido Mariano Ortega-Muñoz Fernando Hernandez-Mateo F.Javier Lopez-Jaramillo francisco Santoyo-gonzalez Department of Organic Chemistry Biotechnology InstituteSchool of SciencesCampus Fuentenueva snUniversity of Granada18071-GranadaSpain

Selenium(Se)has been defined as the“Janus element”,with one face showing antioxidant activity and the other pro-oxidant *** biological effect of Se depends on both dose and *** nanoparticles are attracting major interest,although their large-scale preparation for biomedical applications is not *** hypothesize that acid anhydride-coated carbon dots(AACD)are an attractive platform for preparing nanoparticles containing chemically defined *** reaction of AA-CD with 3-selenocyanatopropan-1-amine yields carbon dots bearing selenocyanate and carboxylate groups(CD-SeCN)that allow for tuning the ***-SeCN has a Se content of 0.36μmol per mg of nanoparticles,they show the typical photoluminescence of carbon *** selenocyanate groups(SeCN)exhibited glutathione peroxidase-like activity and *** show that antioxidant behavior differs between normal and tumor cells,the evaluation on HEK293 and A549 cells reveals that the toxicity of CD-SeCN depends on dose,time,intracellular glutathione(GSH)*** toxicity of CD-SeCN decreases with the time of incubation and the cell death mechanism switches from necrosis to apoptosis,indicating that CD-SeCN is ***,high levels of intracellular GSH exert a protective *** results support a pharmacological potential in cancers with low levels of intracellular *** use of AA-CD as nanoplatforms is a general strategy that paves the way for the engineering of advanced nanosystems.

关键词： selenium nanoparticles carbon dots glutathione peroxidase-like activity Janus element nanomedicine

A wood-wood joining system suitable for digital fabrication and its application in the design of a“wood-only”spatial modulea

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Frontiers of Architectural Research 2023年第3期12卷 523-540页

作者： Antonio Jesús de-los-Aires-Solís francisco gonzalez-Quintial Doctoral School.University of the Basque Country UPV/EHULeioa 48940Spain Department of Architecture.University of the Basque Country UPV/EHULeioa 48940Spain

This paper describes a wood-wood spatial joining system adapted to digital fabrication which has been designated the“Spatial Masterkey”.The wood stereotomy of the joints between the different pieces that make up this joining system is inspired by a three-dimensional puzzle called“snowflake”.The production process used in the masterkey system can be carried out using only a 3-axis CNC milling machine—a relatively affordable and easily accessible *** using digital manufacturing for the execution of wood-wood joints,several benefits are obtained including faster machining and greater cutting precision and uniformity in the products *** advantages make this joining system both economically competitive and environmentally ***,the versatility of this joining system means that its configuration can be adapted to a wide range of casuistry of encounters between members,which means that it can be used for a number of spatial *** includes,but is not limited to,the spatial module presented in this document.

关键词： Wood-wood joinery Digital fabrication 3-Axis CNC Spatial module Sustainability Burr puzzle

Finite Element Structural Analysis of Buried Pipelines

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Modern Mechanical Engineering 2022年第2期12卷 27-44页

作者： casanova-del-Angel francisco Córdova-Castillo Alejandra Escuela Superior de Ingeniería y Arquitectura UP ALM SEPI of the Instituto Politécnico Nacional Mexico City Mexico

This document uses previous results (which we call the first stage), for the development of a computer model based on finite elements under the FEAP programmer, to carry out a structural analysis of a pipeline. For this purpose, we used environmental variables that we believe influence the failure of buried pipelines such as the internal pressure of fluid, the type of support used, the temperature at which the pipelines work, the type of soil and the stiffness of the soil acting on it. Once the model was finalized, analyses were made with each of the variables separately and combined to observe the behavior of the pipeline, finding the most unfavorable case that indicates the main causes that led to its failure.

关键词： Duct Finite Element Buried Pipeline Material Creep Thermal Conditions Soil Springs

Impact of emulated inertia from wind power on under-frequency protection schemes of future power systems

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Journal of Modern Power Systems and Clean Energy 2016年第2期4卷 211-218页

作者： francisco Manuel gonzalez-LONGATT Loughborough University Loughborough LE652JGUK

Future power systems face several *** of them is the use of high power converters that decouple new energy sources from the AC power *** situation decreases the total system inertia affecting its ability to overcome system frequency *** wind power industry has created several controllers to enable inertial response on wind turbines generators:artificial,emulated,simulated,or synthetic *** paper deals with the issues related to the emulated inertia of wind turbines based on full-converters and their effect on the under-frequency protection schemes during the recovery period after system frequency disturbances *** main contribution of this paper is to demonstrate the recovery period of under-frequency transients in future power systems which integrate wind turbines with emulated inertia capability does not completely avoid the worse scenarios in terms of under-frequency load *** extra power delivered from a wind turbine during frequency disturbances can substantially reduce the rate of frequency *** it provides time for the active governors to respond.

关键词： Frequency controller Frequency stability Power system Protection scheme Wind turbine generator

Artificial intelligence model validation before its application in clinical diagnosis assistance

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World Journal of Gastroenterology 2022年第5期28卷 602-604页

作者： Gustavo Jesus Vazquez-Zapien Monica Maribel Mata-Miranda francisco Garibay-gonzalez Miguel Sanchez-Brito Embryology Lab Escuela Militar de MedicinaCiudad de Mexico 11200CDMXMexico Cell&Tissue Biology Lab Escuela Militar de MedicinaCiudad de Mexico 11200CDMXMexico Department of Research Escuela Militar de MedicinaCiudad de Mexico 11200CDMXMexico Instituto Tecnológico de Zacatepec Industrial EngineeringTecNMZacatepec 62780MorelosMexico Instituto Tecnológico de Aguascalientes Computational SciencesTecNMAguascalientes 20256Mexico

The process of selecting an artificial intelligence(AI)model to assist clinical diagnosis of a particular pathology and its validation tests is relevant since the values of accuracy,sensitivity and specificity may not reflect the behavior of the method in a real ***,we provide helpful considerations to increase the success of using an AI model in clinical practice.

关键词： Artificial intelligence Diagnostic assistance Validation tests Leave-one-out cross-validation K-fold validation Hold-out validation

SPLITTING SCHEMES FOR A NAVIER-STOKES-CAHN-HILLIARD MODEL FOR TWO FLUIDS WITH DIFFERENT DENSITIES

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Journal of Computational Mathematics 2014年第6期32卷 643-664页

作者： francisco Guillen-gonzalez Giordano Tierra Departamento de Ecuaciones Diferenciales y Andlisis Numgrico and IMUS Universidad de Sevilla 41012 Seville Spain Department of Applied and Computational Mathematics and Statistics University of Notre Dame Notre Dame IN 46556 USA

In this work, we focus on designing efficient numerical schemes to approximate a ther- modynamically consistent Navier-Stokes/Cahn-Hilliard problem given in [3] modeling the mixture of two incompressible fluids with different densities. The model is based on a diffuse-interface phase-field approach that is able to describe topological transitions like droplet coalescense or droplet break-up in a natural way. We present a splitting scheme, decoupling computations of the Navier-Stokes part from the Cahn-Hilliard one, which is unconditionally energy-stable up to the choice of the potential approximation. Some nu- merical experiments are carried out to validate the correctness and the accuracy of the scheme, and to study the sensitivity of the scheme with respect to different physical pa- rameters.

关键词： Two-phase flow Diffuse-interface phase-field Cahn-Hilliard Navier-Stokes,Energy stability Variable density Mixed finite element Splitting scheme.