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Nonlinear constrained optimization using the flexible tolerance method hybridized with different unconstrained methods

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Chinese Journal of Chemical Engineering 2017年第4期25卷 442-452页

作者： Alice Medeiros Lima Antonio jose Goncalves Cruz Wu Hong Kwong Chemical Engineering Graduate Program Federal University of Sdo CarlosRodovia Washington Luizkm 235-5P310Sao CarlosSP 13565-905Brazil Department of Chemical Engineering Federal University of Sao CarlosRodovia Washington Luizkm 235-SP 310Silo CarlosSP 13565-905Brazil

This paper proposes the use of the flexible tolerance method(FTM) modified with scaling of variables and hybridized with different unconstrained optimization methods to solve real constrained optimization *** benchmark problems used to analyze the performance of the methods were taken from G-Suite *** original method(FTM) and other four proposed methods:(i) FTM with scaling of variables(FTMS),(ii) FTMS hybridized with BFGS(FTMS-BFGS),(iii) FTMS hybridized with modified Powell's method(FTMS-Powell)and(iv) FTMS hybridized with PSO(FTMS-PSO), were implemented. The success rates of the methods were 80%,100%, 75%, 95% and 85%, for FTM, FTMS, FTMS-BFGS, FTMS-Powell and FTMS-PSO, respectively. Numerical experiments including real constrained problems indicated that FTMS gave the best performance, followed by FTMSPowell and FTMS-PSO. Despite the inferior performance compared to FTMS and FTMS-Powell, the FTMS-PSO method presented some advantages since good different initial points could be obtained, which allow exploring different routes through the solution space and to escape from local optima. The proposed methods proved to be an effective way of improving the performance of the original FTM.

关键词： Flexible tolerance method Modified Powell’s method BFGS PSO Scaling Hybridization

Physical habitat condition as a key tool to maintain freshwater biodiversity in neotropical artificial ponds

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Water Biology and Security 2023年第3期2卷 30-35页

作者： Marden S.linares Livia B.dos Santos Marcos Callisto Jean C.Santos Universidade Federal de Minas Gerais Instituto de Ciencias BiologicasDepartamento de GeneticaEcologia e EvoluçaoLaboratorio de Ecologia de BentosAv.Antonio Carlos 6627CEP 31270-901PampulhaBelo HorizonteMGBrazil Laboratorio de Macroecologia e Conservaçao da Biodiversidade Departamento de Botanica e EcologiaUniversidade Federal do Mato GrossoAv.Fernando Correa da Costa2367Boa EsperançaCuiabaMato GrossoCEP 78060-900Brazil Programa de Pos-Graduaçao em Ciencias Ambientais Instituto de Ciencias NaturaisHumanas e SociaisUniversidade Federal do Mato GrossoAvenida Alexandre Ferronato1200SinopMTCEP 78550-728Brazil Universidade Federal de Sergipe Departamento de EcologiaCampus Sao Cristovao-Cidade Universitaria Prof.Jose Aloísio de CamposCEP 49100-000Sao CristovaoSergipeBrazil

In areas highly affected by anthropogenic disturbances,artificial(human-made)freshwater ecosystems can provide habitat for maintaining and conserving regional freshwater *** assessed how the physical habitat of artificial ponds affected the structure of benthic macroinvertebrate *** do so,we tested two hypotheses.(1)Physical habitat disturbances are not detrimental to the diversity of nearby artificial ponds,and(2)Physical habitat disturbances do not cause significant shifts in taxonomic *** results rejected both null hypotheses,i.e.,macroinvertebrate diversity metrics correlated significantly and positively with Physical Habitat Integrity index scores,and only sites with high habitat condition scores were significantly associated with sensitive indicator *** results highlight the importance of maintaining physical habitat conditions for sustaining the ecological health of artificial ponds.

关键词： Bioindicators Ecosystem management Lentic ecosystems

Influence of metal support in-plane symmetry on the corrugation of hexagonal boron nitride and graphene monolayers

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Nano Research 2018年第9期11卷 4643-4653页

作者： Antonio d. Martinez-Galera jose M. Gomez-Rodriguez Departamento de Fisica de la Matefia Condensada Universidad Autonoma de Madrid Madrid E-28049 Spain Condensed Matter Physics Center (IFIMAC) UniversidadAutdnoma de Madrid Madrid E-28049 Spain Instituto Nicolds Cabrera Universidad Autonoma de Madrid Madrid E-28049 Spain

Predicting the properties of two-dimensional （2D） materials as graphene and hexagonal boron nitride （h-BN） monolayers after their growth on any given substrate is a major challenge. While the influence of the electron configuration of the atoms of the underlying surface is well-understood, the effect of substrate geometry still remains unclear. The structural properties of h-BN monolayers grown on a rectangularly packed Rh（110） surface were characterized in situ by ultrahigh vacuum scanning tunneling microscopy and were compared to those that this material exhibits when grown on substrates showing different crystallographic orientations. Although the h-BN monolayer grown on Rh（110） was dominated by a unique quasiunidimensional moir6 pattern, suggesting considerable interface interaction, the moir6 corrugation was unexpectedly smaller than those reported for strongly interacting interfaces with hexagonal-terminated substrates, owing to differences in the possible binding landscapes at interfaces with differently oriented substrates. Moreover, a rule was derived for predicting how interface corrugation and the existence and extent of subregions within moir6 supercells containing favorable sites for orbital mixing between h-BN monolayers and their supports depend on substrate symmetry. These general symmetry considerations can be applied to numerous 2D materials, including graphene, thereby enabling the prediction of how substrate choice determines the properties of these materials. Furthermore, they could also provide new routes for tuning 2D material properties and for developing nanotemplates showing different geometries for Krowing adsorbate superlattices.

关键词： hexagonal boron nitride graphene two-dimensional materials scanning tunneling microscopy moire superstructures nanotemplates

On a Classical Theorem on the Diameter and Minimum Degree of a Graph

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Acta Mathematica Sinica,English Series 2017年第11期33卷 1477-1503页

作者： Veronica HERNANDEZ Domingo PESTANA jose M. RODRIGUEZ Universidad CarlosⅢde Madrid Avenida de la Universidad3028911 LeganesSpain

In this work, we obtain good upper bounds for the diameter of any graph in terms of its minimum degree and its order, improving a classical theorem due to Erdos, Pach, Pollack and Tuza. We use these bounds in order to study hyperbolic graphs （in the Gromov sense）. To compute the hyperbolicity constant is an almost intractable problem, thus it is natural to try to bound it in terms of some parameters of the graph. Let H（n, δ0） be the set of graphs G with n vertices and minimum degree 50, and J（n, Δ） be the set of graphs G with n vertices and maximum degree A. We study the four following extremal problems on graphs： a（n,δ0） = min{δ（G）｜ G ∈H（n, δ0）}, b（n, δ0） =- max{δ（G）｜ e ∈H（n, δ0）}, α（n, Δ） = min{δ（G） [ G ∈ J（n, Δ）} and β（n,Δ） = max{δ（G） ] G∈Π（n,Δ）}. In particular, we obtain bounds for b（n, δ0） and we compute the precise value of a（n, δ0）, α（n, Δ） and w（n, Δ） for all values of n, r0 and A, respectively.

关键词： Extremal problems on graphs diameter minimum degree maximum degree Gromov hyperbolicity hyperbolicity constant finite graphs

North-South Comparatism:New Worldism,Theories of Lack and Acclimatization

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Journal of Foreign Languages and Cultures 2022年第1期6卷 26-37,155页

作者： jose Luis Jobim Federal Fluminense University

In this essay I will use the expression New Worldism to refer to a particular representation of the New World,developed in Europe.I will take some theories related to this expression(theories of lack and acclimatization)to provide a short introduction to them,taking into special consideration their connection to comparatism as it was developed in 19th-century Brazil.

关键词： North-South Comparatism New Worldism theories of lack theoriesof acclimatization

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COSMO-based models

Green Energy & Environment 2021年第3期6卷 309-310页

作者： Chengna Dai Zhigang Lei Zhiwen Qi jose Palomar Beijing University of Technology China Shihezi University China East China University of Science and Technology China Universidad Autonoma de Madrid Spain

In many separation processes(e.g.,extractive distillation,absorption,liquid–liquid extraction,etc.),a third solvent(namely separating agent or entrainer)is commonly needed to add into the mixtures to be separated so as to improve the separation ***,the selection of a suitable separating agent is the key to ensuring an effective and economical separation processes.

关键词： COSMO-based models SAC

Visual grading criteria for Japanese larch ( Larix kaempferi ) structural timber from Spain

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Journal of Forestry Research 2020年第6期31卷 2605-2614页

作者： Mari-jose Barriola José-Ramón Aira Edgar Lafuente Tknika LHri Aplikatutako Ikerketa eta Berrikuntzako EAEko zentroaZamalbide Auzoa z/g20100 ErrenteriaGipuzkoaSpain Escuela de Ingeniería de la Industria Forestal Agronómica y de la BioenergíaUniversidad de ValladolidUVa-Campus Duques de Sorias/n42005 SoriaSpain Cesefor Centro de Servicios y Promoción Forestal y de su Industria de Castilla y LeónCalle C42005 SoriaSpain

Larch wood is structurally classifi ed in many countries as one of conifers with the highest load-bearing capacity(strength class of C30).The Spanish visual classifi cation regulation only assigns a strength class to 4 pine woods:Laricio pine(Pinus nigra ***),Silvestre pine(Pinus sylvestris L.),Radiata pine(Pinus radiata ***),and Pinaster pine(Pinus pinaster Ait.).This work adds to the number of structurally characterised species by creating a visual classifi cation table for Japanese larch wood(Larix kaempferi(Lamb.)Carr.)which diff erentiates between 2 visual classes,MEG-1 and *** strength values were calculated for each class(fk,MEG-1=31.80 MPa,f k,MEG-2=24.55 MPa),mean module of elasticity(E 0,mean,MEG-1=13,082 MPA,E 0,mean,MEG-2=12,320 MPA)and density(ρk,MEG-1=456.6 kg m−3,ρk,MEG-2=469.1 kg m−3),before fi nally assigning a strength class of C30 to visual class MEG-1,and a strength class of C24 to visual class MEG-2.

关键词： Japanese larch wood Visual grading Strength class Mechanical properties Density

Memory for location and visual cues in white-eared hummingbirds Hylocharis leucotis

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Current Zoology 2011年第4期57卷 468-476页

作者： Guillermo PEREZ Carlos LARA jose VICCON-PALE Martha SIGNORET-POILLON Doctorado en Ciencias Biologicas Universidad Autonoma Metropolitana. Unidad Xochimilco. Calzada del Hueso 1100 Col. Villa Quietud 04960 Moxico D.F. Moxico Laboratorio de Ecologfa de la Conducta Centro Tlaxcala de Biologfa de la Conducta UAT-UNAM Km 1.5 carretera Tlaxcala- Puebla s/n Colonia Xicohtoncatl Apdo. Postal 262 Tlaxcala Tlaxcala 90070 Moxico. Departamento el Hombre y su Ambiente. Universidad Autdnoma Metropolitana. Unidad Xochimilco. Calzada del Hueso 1100 Col. Villa Quietud 04960 MExico D.F. Mexico

In nature hummingbirds face floral resources whose availability, quality and quantity can vary spatially and temporally. Thus, they must constantly make foraging decisions about which patches, plants and flowers to visit, partly as a function of the nectar reward. The uncertainty of these decisions would possibly be reduced if an individual could remember locations or use visual cues to avoid revisiting recently depleted flowers. In the present study, we carried out field experiments with white-eared hummingbirds Hylocharis leucotis, to evaluate their use of locations or visual cues when foraging on natural flowers Penstemon roseus. We evaluated the use of spatial memory by observing birds while they were foraging between two plants and within a single plant. Our results showed that hummingbirds prefer to use location when foraging in two plants, but they also use visual cues to efficiently locate unvisited rewarded flowers when they feed on a single plant. However, in absence of visual cues, in both experiments birds mainly used the location of previously visited flowers to make subsequent visits. Our data suggest that hummingbirds are capable of learning and employing this flexibility depending on the faced environmental conditions and the information acquired in previous visits [Current Zoology 57 （4）： 468-476, 2011].

关键词： Visual cues Location White-eared hummingbird Foraging

Lympho-SPECT/CT as a tool to evaluate postoperative outcomes after LVA for lymphedema repair

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Plastic and Aesthetic Research 2020年第6期7卷 12-23页

作者： jose M.Lasso Plastic and Reconstructive Surgery Hospital General Universitario Gregorio MarañónMadrid 28007Spain

Aim:To describe findings when comparing lympho-SPECT-CT images before and after lymphovenous anastomosis(LVA)surgeries and to correlate these results with pre-and post-operative volume changes in the limbs of ***:An observational,prospective,longitudinal study was designed.20 consecutive patients were treated for lymphedema by means of LVA between 2015 and *** were affected by secondary lymphedema(ISGⅡ-Ⅲ)following lymphadenectomy,radiation or *** patients received preoperative rehabilitation as well as radiotherapy after oncological *** volume was measured before surgery and at one year *** was performed under general anesthesia with ICG *** was also used to evaluate postoperative ***-SPECT-CT was performed in all subjects at their first consultation and at one year after every surgical *** of findings included an absence of lymph nodes,new lymph node activity in anatomical areas and new lymphatic activity in extra-anatomical ***:Limb volume decreased in 19 patients after *** patients showed preoperative linear ICG patterns,combined with areas presenting with another type of *** LVA,the linear pattern was observed in 11 ***-CT/lymphoscintigraphy before surgery showed a total absence of lymph nodes,except in two cases,in whom small nodes in anatomical locations were *** LVA,we observed new landmarks in 16 patients corresponding to lymphatic circulation that was not present in preoperative *** six cases,newlymphatic activity compatible with lymph nodes was detectable after *** Spearman correlation coefficient was negative when circumferences and lympho-SPECT-CT were tested(P=0.02).Conclusion:Results showed a postoperative decrease in volume that correlated inversely with lympho-SPECT/CT ***-SPECT/CT provided additional information related to accurate identification and the anatomical location of lymphatic structures that

关键词： Lymphedema supermicrosurgery lymphovenous anastomosis LVA lympho-SPECT/CT ICG