Computer Networks and ISDN Systems最新文献

{"title":"Análisis de las condiciones de iluminación en las aulas del Departamento de Ingeniería Civil de la Universidad de Guanajuato de acuerdo con la NOM-025-STPS-2008 y NOM-007-ENER-2014","authors":"L. E. C. Valencia, César Leonardo Ruiz Jaime, E. M. A. Guzmán","doi":"10.35830/CN.VI82.548","DOIUrl":"https://doi.org/10.35830/CN.VI82.548","url":null,"abstract":"Since ancient times humans have used various ways of illuminating the spaces inhabited, initially to protect themselves and now to continue with activities related with the day. However, the lighting in-room houses and public buildings including schools do not have the appropriate levels, low levels can lead to health consequences for users or high levels leads low energy efficiency, so that this study analyzed the lighting in the classrooms of Civil Engineering Department of the University of Guanajuato and compared with the levels set in the Mexican standards. From the results it was concluded that natural lighting is insufficient for reading and writing activities, a situation that is solved with of artificial light, although the classrooms analyzed are energy efficient the production of electricity involves an environmental impact.","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86041230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estudios de repetibilidad y reproducibilidad de métodos no destructivos en maderas angiospermas.","authors":"J. R. S. Castellanos, René Navarrete Padilla","doi":"10.35830/CN.VI82.533","DOIUrl":"https://doi.org/10.35830/CN.VI82.533","url":null,"abstract":"","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85434816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"La lógica de la gestión del riesgo volcánico","authors":"Servando de la Cruz Reyna","doi":"10.35830/CN.VI82.558","DOIUrl":"https://doi.org/10.35830/CN.VI82.558","url":null,"abstract":"Volcanic risk management presents difficulties that are inherent to the nature of the eruptive activity, namely the inaccessibility of the magmatic systems and the multiple interpretations attributable to the signals recorded on the surface. Authorities responsible for the protection of the population require the decision factors that the scientific community may provide, which, with such epistemic uncertainties, must seek ways to identify and communicate the basic elements of the volcanic process that support correct decisions, which otherwise may compromise the safety of large sectors of the population in vulnerable regions.","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80426831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transformadores de Potencia con Doble Núcleo: Análisis de respuesta a la frecuencia","authors":"C. Rojas, Sigridt Garcí­a Martínez","doi":"10.35830/CN.VI82.543","DOIUrl":"https://doi.org/10.35830/CN.VI82.543","url":null,"abstract":"The Frequency Response Analysis (FRA), is an excellent tool for the diagnosis and detection of internal faults in a transformer, such as: a displacement and winding deformation due to electromagnetic forces as a result of fault currents, the loosening of winding supports as a consequence of electric shocks or when the transformer is transported. These type of faults are mainly involved with the change in the geometry of the transfomer as a whole, a factor that alters the RLC parameters which represent the transformer, and therefore, its resonance points. The standard behavior of the three-phase three limbs transformer can be found in the literature. In this work, an analysis of the tests, which were applied in a double core transformer that is commoly used in arc furnaces, was carried out. The main feature of these transformers is that they feed high currents over a wide range of voltages.","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83733336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Caracterización de un holograma mediante el dopaje de un PDLC con violeta de genciana","authors":"M. O. Gutiérrez, Mario Pérez Cortés, J. Torres, Jorge Carlos Lugo Jiménez, Otilio Santos Aguilar, Maritza De Coss Gómez","doi":"10.35830/CN.VI82.562","DOIUrl":"https://doi.org/10.35830/CN.VI82.562","url":null,"abstract":"Se propone la utilizacion de un dispositivo PDLC (Polymer Dispersed Liquid-Crystal) dopado con violeta de genciana para su utilizacion en el grabado de rejillas holograficas (H-PDLC). Se muestra el comportamiento de la eficiencia de difraccion de rejillas holograficas grabadas en un H-PDLC con un espesor de 10 µm. El proceso de grabado se lleva a cabo por la modulacion del indice de refraccion del H-PDLC al ser expuesto a un patron de luz. La eficiencia maxima que alcanza este dispositivo es del 5% medido en el orden 1 de difraccion. Este dispositivo promete ser un buen material para funcionar como alternativa de las peliculas holograficas.","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"81 5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85306957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploración sísmica de refracción mediante ruido sísmico","authors":"J. González, Mariana Guadalupe Heredia Martí­nez, Iván Granados Chavarrí­a","doi":"10.35830/CN.VI82.555","DOIUrl":"https://doi.org/10.35830/CN.VI82.555","url":null,"abstract":"In this study, a seismic refraction profile was obtained using seismic noise records. The waveforms were recorded on a refraction line located west of Mexico City. The line consists of a linear array of 24 vertical geophones spaced 2 meters apart and a record length of 175 minutes. The virtual refraction profile was constructed from the cross-correlation of the seismic noise records from the 24 geophones. Each virtual refraction trace was obtained by stacking the correlations for all time windows between pairs of stations. In signal processing, different normalization applications were tested, with the aim of recovering the arrival of the P wave. Three seismic refraction profiles were calculated corresponding to virtual sources located in the center and ends of the line. To evaluate the recovery of the P waves acquired in this way, a spectral analysis of the cross correlations was performed to rule out the use of surface waves in synthetic seismograms. The virtual profiles obtained were compared with the conventional seismic refraction profiles, showing clearly the recovery of the first arrivals of the P wave, even improving the definition of the traces of conventional refraction. In addition, to complement the study, an F-K analysis was performed to discriminate surface waves and obtain only body waves.","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73963291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geodesia aplicada al monitoreo de desplazamientos de una ladera inestable y la influencia de la precipitación, durante el período 2008-2011, Teziutlán, Puebla.","authors":"Ángel Gómez Vázquez, Ana Teresa Mendoza Rosas","doi":"10.35830/CN.VI82.559","DOIUrl":"https://doi.org/10.35830/CN.VI82.559","url":null,"abstract":"In October 1999, a landslide occurred in the neighborhood of La Aurora, TeziutlAin, state of Puebla, which resulted in the death of 130 people. During the period 2008-2011, a geodetic network was built on that slope to detect its movements, which is made up of 10 points on it and two remote control stations. In this period of time, we carried out 11 distance measurement campaigns with a total station. Negative displacements between -5 and -19 mm were detected in some points near the 1999 landslide crown, in the rest of the points, the displacement was very small. The displacement velocities are less than 7.3mm per year, which according to the classification of Cruden and Varnes (1996) would place them in level 1, as extremely slow. We calculate correlation coefficients between displacements and meteorological variables from a database of the National Water Commission (CONAGUA), the meteorological station is located near the landslide area, our results do not show significant correlations.","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86631494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tectónica y sismicidad en la Región Volcánica Paricutín - Tancítaro, Michoacán, México","authors":"Daniel Alberto Gómez Calderón, Diana Cinthia Soria Caballero, Pedro Corona Chávez","doi":"10.35830/CN.VI82.556","DOIUrl":"https://doi.org/10.35830/CN.VI82.556","url":null,"abstract":"Active tectonomagmatic regions are characterized for the presence of regional fault systems, as well as recurrent volcanism and seismicity. The Parícutin-Tancítaro Volcanic Region is located in the Michoacán-Guanajuato Volcanic Field on the central part of the Transmexican Volcanic Belt and represents a structurally complex zone with high volcanic density. This work presents a morphotectonic and seismicity analysis in the Parícutin-Tancítaro Volcanic Region. Here, we observe the coexistence of two regional fault systems: 1) the Cotija-Nueva Italia Fault System, which groups NW-SE oriented faults and fractures, and represent the limit between the Meseta P’urhépecha area to the north and the Peribán-Los Reyes Graben and the Bajo Balsas Basin to the south. 2) The Tepalcatepec-Tangancícuaro Fault System, which groups NE-SW oriented faults, including frequent volcanic lineaments with the same direction; this system influences the formation of the Peribán-Los Reyes Graben. The Parícutin-Tancítaro Region presents an intense seismic activity and is characterized by the record of at least 7 seismic swarms during the last 80 years. Independently the precision on the location and relatively occurrence depth of the seismic swarms, those overlap with the regional faults systems (previously mentioned) and with late Pleistocene, Holocene and recent volcanic lineaments (e.g. Parícutin volcano (1943-1952), Pedregal volcano (470-710), Astillero volcano (620-680), and Metate volcano (1000-1600)). The concurrence and recurrence of the three tectonomagmatic elements strongly suggest that the tectonic structures ease the ascension and emplacement of magmas, probably associated to shallow reservoirs to at depths of 4-5 km, 9-10 km and 14-17 km. This scenario carries inherent geological hazards related to volcanic and seismic activity, which could affect the communities settled in the region. Therefore, its necessary monitoring volcanic and seismic processes evolution in the Parícutin-Tancítaro Volcanic Region through geophysical techniques and permanent analysis of data. KeywoRds: vulcanotectonic, active fault, seismicity, Parícutin-Tancítaro, volcanic field. coRResPondencia de autoR: dagcbeto@gmail.com Ciencia Nicolaita Copyright, Universidad Michoacana de San Nicolás de Hidalgo. HistoRial del aRtículo Recibido: 6 de junio de 2021 Aceptado: 27 de julio de 2021 25 Ciencia Nicolaita No. 82, septiembre 2021","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"102 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90586219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aplicación de VolcFlow para simular Avalanchas de Escombros y CDP en los volcanes Popocatépetl, Volcán de Colima y Ceboruco","authors":"Enrique Cárdenas Sánchez, L. Gómez, Elis Olivia Rangel Flores, Oscar Dionicio Reyes Mendoza, Francisco Valencia Alcaraz","doi":"10.35830/CN.VI82.557","DOIUrl":"https://doi.org/10.35830/CN.VI82.557","url":null,"abstract":"Volcanic hazard analysis makes it possible to quantify the potential risk from historical events in the social and economic context.  In the geographical context, Mexico has at least 38 volcanic centers, including monogenetic volcanoes and stratovolcanoes, which have presented explosive activity in the last 10 thousand years.  The main relevant are the PopocatA©petl volcano, VolcAin de Colima and the Ceboruco volcano. They have some similarities between them, such as presenting recent explosive and effusive activity and being located on high population density in its surroundings and therefore, a high degree of vulnerability.  On the one hand, the Ceboruco volcano has presented at least 8 eruptions including the last since 1870. Moreover, VolcAin de Colima and the PopocatA©petl volcano have been two of the most active volcanoes in Mexico with frequent emplacement and destruction of lava domes in the last 20 years causing preventive evacuation by the corresponding authorities. We used the VolcFlow app written by MATLAB to solve conservation of mass and momentum equations.  Considering the above, this article shows the result of hazard analysis of various events such as lahars, pyroclastic flows, and avalanche debris with a mitigating risk approach from volcanic hazard. The results allow us to make effective modifications in the rheological parameters that are characteristic for each type of event in each volcano considering the characteristics such as the flux density, viscosity, volume of material emitted and Digital Elevation Model.","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82441833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Governos locais pelo Pacto Global para a Migração: iniciativas europeia e sul-americana em paradiplomacia municipal face aos limites jurídicos domésticos e internacionais","authors":"Joséli Fiorin Gomes","doi":"10.14295/CN.V2I3.12313","DOIUrl":"https://doi.org/10.14295/CN.V2I3.12313","url":null,"abstract":"The UN General Assembly approved the Global Compact for Migration, a non-binding agreement to improve international cooperation to mitigate the negative impacts of irregular migration. Despite this, many of the voting countries soon withdrew from the Compact. However, local governments in several of these countries, by paradiplomacy, have supported the UN agenda on migration, in contrast to the positions of States. In this sense, the work aims to identify and examine what are the initiatives, in municipal paradiplomacy, regarding human mobility, in South America and Europe, which are in line with the Compact ́s proposals. It is inquired which basis can legitimize them, pointing out the role attributed to local governments by the UN in its current  Doutora em Direito pela Universidade Federal do Rio Grande do Sul (UFRGS). Professora permanente do Programa de Pós-graduação em Relações Internacionais (PPGRI) e professora adjunta do Departamento de Direito da Universidade Federal de Santa Maria (UFSM). Campos Neutrais – Revista Latino-Americana de Relações Internacionais Vol. 2, No 3, Setembro–Dezembro de 2020. Santa Vitória do Palmar – RS. 73 agenda, aiming to investigate the legal obstacles, in international and domestic scope, put to these initiatives for the local realization of the said international agreement.","PeriodicalId":100317,"journal":{"name":"Computer Networks and ISDN Systems","volume":"13 1","pages":"72-86"},"PeriodicalIF":0.0,"publicationDate":"2021-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86470825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}