Res. Comput. Sci.最新文献_第3页

Synthesis and Mechanical Characterization of Chitosan Threads for Biomedical Applications 医用壳聚糖螺纹的合成及力学性能研究

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/rcs-148-1-2

I. Rodriguez, Olivia Rivera‐Debernardi, A. Rosillo, I. Delgadillo-Holtfort, Jorge Delgado

{"title":"Synthesis and Mechanical Characterization of Chitosan Threads for Biomedical Applications","authors":"I. Rodriguez, Olivia Rivera‐Debernardi, A. Rosillo, I. Delgadillo-Holtfort, Jorge Delgado","doi":"10.13053/rcs-148-1-2","DOIUrl":"https://doi.org/10.13053/rcs-148-1-2","url":null,"abstract":"Chitosan is a biopolymer widely used for many applications, especially in the biomedical field, due to its interesting properties like excellent sorption capability, biodegradability and biocompatibility. The presence of reactive groups in the structure of this biopolymer makes possible the attachment of different molecules. In this study a chitosan thread is synthesized, using a microfluidic technique with two merging channels of acidic chitosan and hydroxide, in order to use it as a controlled release device of drugs. Varying the flows of the fluids in the channels is possible to control the diameter of the thread, obtaining samples of medium and high molecular weight for each flow rate used in the synthesis. The obtained thread of chitosan was mechanically characterized performing tensile tests until failure and stress relaxation tests. An optical system of polarizers was set to visualize the alignment of the polymeric chains while the material is elongated during the tensile test. Young modulus is obtained for each type of sample to quantify the stiffness of the material, and relaxation times were calculated to observe the viscoelastic behavior. Alignment of the material was confirmed, since birefringence was shown.","PeriodicalId":220522,"journal":{"name":"Res. Comput. Sci.","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132261871","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}

引用次数: 0

A Formal Technique for Text Summarization from Web Pages by using Latent Semantic Analysis 基于潜在语义分析的网页文本摘要形式化技术

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/rcs-148-3-1

J. G. Ramos, Isela Navarro-Alatorre, G. Becerra, Omar Flores-Sánchez

{"title":"A Formal Technique for Text Summarization from Web Pages by using Latent Semantic Analysis","authors":"J. G. Ramos, Isela Navarro-Alatorre, G. Becerra, Omar Flores-Sánchez","doi":"10.13053/rcs-148-3-1","DOIUrl":"https://doi.org/10.13053/rcs-148-3-1","url":null,"abstract":"Web is the more attractive media for information consulting of, practically, whatever theme; humanity considers the Web, in the facts, the standard source of information. However as content grows, effort for discriminating and filtering increases too. Orthogonally, users employ each time smaller devices with reduced screens for web reviewing. Both considerations suggest the neediness of software tools for information acquiring and reduction, i.e., text summarization. There are several methods for text summarization, however, majority of them are based on techniques who considere plain documents in contrast with tree like structures of web pages, other are settled on the existence of keywords ignoring relations among words. In this work we present a formal method for the preparation of text summaries based on latent semantic analysis (LSA), which exploits the implicit relationships between the words that appear in a common context. In this way, text summaries are enriched with a certain semantic flavor incorporated by LSA. Furthermore we prepare the text summary induced by the query of an user and retrieving text excerpts more semantically similar to user’s interest. Additionally we define a formula called semantic similarity which encapsulates the properties of LSA and determines the best text web page node for producing summaries.","PeriodicalId":220522,"journal":{"name":"Res. Comput. Sci.","volume":"37 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132286771","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}

引用次数: 2

Navegación de robots móviles utilizando algoritmos Bugs extendidos 使用扩展bug算法导航移动机器人

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/rcs-148-8-12

M. Serna, Abraham Sánchez López, Martín Estrada Analco, María Beatríz Bernábe Loranca, G. ElberfeldE.Pérez

引用次数: 0

Modelos neuronales pulsantes adaptados para el mejoramiento de luminosidad de imágenes cerebrales de gran resolución 脉动神经模型适应于提高高分辨率大脑图像的亮度

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/RCS-148-7-19

Manuel Mejía-Lavalle, Kevin S. Aguilar Domínguez, J. H. S. Azuela, Dante Mújica, Andrea Magadán Salazar

引用次数: 0

Prototipo de sistema embebido para la asistencia de personas con discapacidad visual en la acera pública 在公共道路上协助视障人士的嵌入式系统原型

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/rcs-148-10-21

Diego Cruz Mondragón, Katia Santillán Álvarez, V. Ortega, J. H. S. Azuela

引用次数: 0

Improvement a Transcription Generated by an Automatic Speech Recognition System for Arabic Using a Collocation Extraction Approach 用搭配抽取方法改进阿拉伯语语音自动识别系统生成的转录词

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/rcs-148-4-9

Heithem Amich, M. Zrigui

引用次数: 0

Methodology for the Analysis of Electrical Consumption 电力消费分析方法

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/rcs-148-3-20

B. Pérez-Camacho, J. González-Calleros, Iván Olmos

引用次数: 0

A Review of Indoor Navigation Systems for a Bipedal Robot: Preliminary Results 双足机器人室内导航系统综述:初步结果

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/rcs-148-3-25

Miguel-Angel Ortega-Palacios, Josefina Guerrero García, J. González-Calleros

{"title":"A Review of Indoor Navigation Systems for a Bipedal Robot: Preliminary Results","authors":"Miguel-Angel Ortega-Palacios, Josefina Guerrero García, J. González-Calleros","doi":"10.13053/rcs-148-3-25","DOIUrl":"https://doi.org/10.13053/rcs-148-3-25","url":null,"abstract":"The navigation process of human is quite different from robots. Semantic meaning is what we used to model the environment. One of the most important elements human uses to model the environment is the vision. The keyframes are the elements that human use to model the environment. Therefore, we do not need a specific coordinate to move around. We can only use vision to navigate to anywhere we want to go. To take advantage of the concept that human model the environment, we propose a method which imitates the mapping and navigation process of the human. We will use computer vision to do the mapping of the environment and wayfinding to navigate it. The environment model is created with data collected with an odometer that identifies the obstacles on the route of the robot. Our research proposal is to create an algorithm to avoid obstacles. In this paper, we focus on reviewing existing solutions to address our research problem which is a system mounted on a biped robot navigating indoor environments on its own, without having to use preset routines. We have reviewed existing literature and presented it to help future researchers who had the same goal and could be used as a starting point.","PeriodicalId":220522,"journal":{"name":"Res. Comput. Sci.","volume":"85 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116202660","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}

引用次数: 1

Automatic Identification of Learning-Centered Emotions: Preliminary Study for Data Collection 以学习为中心的情绪自动识别:数据收集的初步研究

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/rcs-148-3-14

Yesenia N. González-Meneses, Josefina Guerrero García

引用次数: 0

Leisure Organization Models of Young People in the North Mexican Border 北墨边境青少年的休闲组织模式

Res. Comput. Sci. Pub Date : 2019-12-31 DOI: 10.13053/rcs-148-6-12

Aida Yarira Reyes Escalante, C. A. O. Zezzatti, Edith Vera Bustillos, Alejandra Peña Escarcega

{"title":"Leisure Organization Models of Young People in the North Mexican Border","authors":"Aida Yarira Reyes Escalante, C. A. O. Zezzatti, Edith Vera Bustillos, Alejandra Peña Escarcega","doi":"10.13053/rcs-148-6-12","DOIUrl":"https://doi.org/10.13053/rcs-148-6-12","url":null,"abstract":"Throughout an exploratory research design, we approach the study of youth organization in fulfilling leisure as an essential part of everyday life. We use data mining as the technique to drawing conclusions from our vast amount of data, upon extrapolating patterns and associating dependently linked variables and attributes. The structure of this paper is organized by the perspective of youth as a category of study, and conceptualization of human needs to understand the implications of these at the spare time. The organization is approached as a group of people related to systematic arrangement of social relations that give meaning to ideas, and values shared. The analysis is accomplished through data obtained from 300 participants aged 15 to 29, that shed light about categories of youth organization as an articulator of the social coexistence: demographics; preferences by age, gender, type, and frequencies of activities; spending; networks and the before and after-party activities, which counts the strategies they adopt for leisure, in the midst of a complex society in Ciudad Juárez, México. The leisure organizational model is constructed by elements related to various attributes into discernable categories, which can use to draw further conclusions about the theme approached.","PeriodicalId":220522,"journal":{"name":"Res. Comput. Sci.","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125039872","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}

引用次数: 1