2018 XLIV Latin American Computer Conference (CLEI)最新文献_第5页

A Semantic Approach to Uncovering Implicit Relationships in Textual Databases 一种揭示文本数据库隐含关系的语义方法

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00065

D. G. Vasques, P. Martins, S. O. Rezende

引用次数: 0

Monitoring Strategy for Analyzing the First-Year University Students' Performance According to Their Profiles of Provenance 基于来源档案分析大学一年级学生成绩的监测策略

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00104

Fernanda Papa, Valeria de Castro, Pablo Becker, E. Marcos, L. Olsina

{"title":"Monitoring Strategy for Analyzing the First-Year University Students' Performance According to Their Profiles of Provenance","authors":"Fernanda Papa, Valeria de Castro, Pablo Becker, E. Marcos, L. Olsina","doi":"10.1109/CLEI.2018.00104","DOIUrl":"https://doi.org/10.1109/CLEI.2018.00104","url":null,"abstract":"In 2014, Rey Juan Carlos University (from Spain) has implemented the Service Science, Management and Engineering career. From the study conducted in 2016, the formulated hypothesis that the students' evidenced performance in the different modules of the career (i.e., Fundamentals, Technology, Personal Skills, Services and Companies) is affected by the secondary school modality of provenance. Aimed at monitoring the performance of first-year students of this career, in the present work we propose the use of a Holistic Evaluation Approach for Quality. This approach has a family of integrated evaluation strategies which allows achieving goals for diverse purposes such as to understand, compare, monitor, among others. In a nutshell, a strategy integrates a conceptual base with process and method specifications, which ensures that evaluation projects' results are consistent and comparable over time. Particularly, in this work, we use the monitoring strategy for understanding the performance of students, in the first year of the abovementioned career, from 2014 to 2017 period of time. The yielded outcomes will serve as a basis for the development of a predictive model. This will allow to the University to propose instruments aimed at improving the performance of students regarding the predominant modality of provenance.","PeriodicalId":379986,"journal":{"name":"2018 XLIV Latin American Computer Conference (CLEI)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116625596","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

Extending ILUPACK with a GPU Version of the BiCGStab Method 使用BiCGStab方法的GPU版本扩展ILUPACK

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00092

J. Aliaga, Ernesto Dufrechu, P. Ezzatti, E. S. Quintana‐Ortí

引用次数: 1

Centralized indoor positioning system using bluetooth low energy 集中室内定位系统采用蓝牙低功耗

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00109

Derlis A. Garcete, José Luis Vázquez Noguera, Cynthia Villalba

引用次数: 4

Shedding Light on Variational Autoencoders 变分自编码器的启示

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00043

J. Vargas, S. Novaes, Raphael Cóbe, R. Iope, S. Stanzani, T. Tomei

引用次数: 1

Quality Assessment of Awareness Support in Agile Collaborative Tools 敏捷协作工具中意识支持的质量评估

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00013

Diogo Alberto do Espírito Santo Saraiva, Bruno Rafael de Oliveira Rodrigues, Fernando Hadad Zaidan, Fernando Silva Parreiras

{"title":"Quality Assessment of Awareness Support in Agile Collaborative Tools","authors":"Diogo Alberto do Espírito Santo Saraiva, Bruno Rafael de Oliveira Rodrigues, Fernando Hadad Zaidan, Fernando Silva Parreiras","doi":"10.1109/CLEI.2018.00013","DOIUrl":"https://doi.org/10.1109/CLEI.2018.00013","url":null,"abstract":"Computer Supported Cooperative Work (CSCW) is a research field focused on understanding characteristics of interdependent group work with the objective of designing adequate computer-based technology to support cooperative work processes. One of the key concepts of CSCW is the provision of relevant information to workers in a team, a concept named awareness. As the market and research community have already perceived the importance of providing fast and reliable information among team workers, it shares the interest of CSCW in awareness improvement. This addresses the following research question: What is the quality of awareness support in agile collaborative tools? To answer this question a survey was performed with 200 users which provided feedback scores for each given design element related to support of different awareness aspects. We used a Formal Technical Review (FTR) method specifically focused on awareness assessment, named Awareness Checklist. According to this method, there are 54 design elements that influence or contribute to awareness support. Those elements can be categorized in 14 design categories, which are directly related to six awareness types: Collaborations, Location, Context, Social, Workspace and Situation. We found that Microsoft Team Foundation Server, Jira and Trello offer more collaborative aware support, however about localization and context the DotProject tool obtained the highest score, as well in Social and the Situation too. The results offer the opportunity to assess the quality of awareness in any collaborative software used in small or bigger business projects and can be used to demonstrate certain aspects of the software which can be improved to achieve their user's satisfaction. The same concept can also be used to outline the tools main advantages and disadvantages, acting as a quality reviewer that can help to choose which collaborative tools should be adopted according to categories strengths and weaknesses","PeriodicalId":379986,"journal":{"name":"2018 XLIV Latin American Computer Conference (CLEI)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114188152","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 Challenge Generation for Teaching Computer Security 计算机安全教学中的自动挑战生成

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00098

Ricardo de la Rocha Ladeira, R. Obelheiro

{"title":"Automatic Challenge Generation for Teaching Computer Security","authors":"Ricardo de la Rocha Ladeira, R. Obelheiro","doi":"10.1109/CLEI.2018.00098","DOIUrl":"https://doi.org/10.1109/CLEI.2018.00098","url":null,"abstract":"Computer Security is an increasingly important area, considering the sophistication and increase of threats present in the digital world. The need for information protection contrasts with the lack of professionals and the limited space dedicated to the area in Information Technology (IT) courses. Games and competitions have been used to motivate students of Computing to improve their practical knowledge on the subject and also to foster the interest of potential students 'and professionals in Security. The creation of these games requires specialized knowledge to develop new problems, since the novelty of these games is important to reach the desired level of difficulty and to ensure competitiveness. This work proposes the use of randomization to generate problems and entire competitions in an automated way, obtaining exclusive instances of problems for each player. As proof of concept, a tool for generating challenges was developed to evaluate the proposal. Competitions with automatically generated problems were promoted, which included students of undergraduate courses and professional qualification in Computing, in two different institutions. The performance in the competitions and the perception of satisfaction, interest and learning of the students involved were analyzed. The results show that the automatic challenges generation is feasible, and the use of competitions in the teaching of Computer Security is motivating and effective for didactic purposes.","PeriodicalId":379986,"journal":{"name":"2018 XLIV Latin American Computer Conference (CLEI)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126589252","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

Digital Recording of Temporal Sequences of Images Applied to the Analysis of the Phenological Evolution of Maize Crops 图像时序数字记录技术在玉米物候演化分析中的应用

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00083

S. Serafino, Benjamin Cicerchia, Juan P. Mitriatti, Agustín Balmer, Martín Faroppa, C. Russo, Hugo Ramón

{"title":"Digital Recording of Temporal Sequences of Images Applied to the Analysis of the Phenological Evolution of Maize Crops","authors":"S. Serafino, Benjamin Cicerchia, Juan P. Mitriatti, Agustín Balmer, Martín Faroppa, C. Russo, Hugo Ramón","doi":"10.1109/CLEI.2018.00083","DOIUrl":"https://doi.org/10.1109/CLEI.2018.00083","url":null,"abstract":"This paper intends to implement registration of images to temporal sequences of maize crops digitally sensed in field trials through the use of a robotic platform. The navigation of trials of this platform equipped with visible and multispectral light sensors, and the registration processes used allow us to generate \"stacks images\" by different genetic varieties of maize with the aim of obtaining a phenological characterization of them, and to compare them. In addition to the basic problems of displacement, lighting, and angle of the different captures, there is the drawback that the objects (plants) are not the same and in many cases also not similar to the previous images (different phenological stages). Added to this is the complexity of sensing the images in outdoor environments, and in particular the general conditions in the field (uneven path surface, climatic conditions). The proposed algorithms are part of the generation of multilayer digital image data banks that allow, through other digital analysis and processing techniques, the automated identification and interpretation of different characteristics for the determination of the response of the different genetic varieties of corn that is studied.","PeriodicalId":379986,"journal":{"name":"2018 XLIV Latin American Computer Conference (CLEI)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114515457","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

An Adjustable Face Recognition System for Illumination Compensation Based on Differential Evolution 基于差分进化的可调光照补偿人脸识别系统

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00036

G. Plichoski, Chidambaram Chidambaram, R. S. Parpinelli

{"title":"An Adjustable Face Recognition System for Illumination Compensation Based on Differential Evolution","authors":"G. Plichoski, Chidambaram Chidambaram, R. S. Parpinelli","doi":"10.1109/CLEI.2018.00036","DOIUrl":"https://doi.org/10.1109/CLEI.2018.00036","url":null,"abstract":"It is well known that face recognition (FR) systems cannot perform well under uncontrolled conditions, but there are no general and robust approaches with total immunity to all conditions. Hence, we present an adjustable FR framework with the aid of the Differential Evolution (DE) optimization algorithm. This approach implements several preprocessing and feature extraction techniques aiming to compensate the illumination variation. The main feature of the present work stands on the use of the DE which is responsible for choosing which strategies to use, as well as tunning the parameters involved. In this case study, we aim to address the illumination compensation problem applying on the well known Yale Extended B face dataset. According to the proposed FR framework, the DE can choose any combination of the following techniques and tune its necessary parameters achieving optimized values: the Gamma Intensity Correction (GIC), the Wavelet-based Illumination Normalization (WBIN), the Gaussian Blur, the Laplacian Edge Detection, the Discrete Wavelet Transform (DWT), the Discrete Cosine Transform (DCT), and the Local Binary Patterns (LBP). Our experimental analysis confirms that the proposed approach is suitable for FR using images under varying conditions. It is proved by the average recognition rate of 99.95% obtained using four different datasets.","PeriodicalId":379986,"journal":{"name":"2018 XLIV Latin American Computer Conference (CLEI)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121785496","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

Evaluating the Impact of Data Modeling on OLAP Applications using Relacional and Columnar DBMS 评估数据建模对使用关系和列式DBMS的OLAP应用程序的影响

2018 XLIV Latin American Computer Conference (CLEI) Pub Date : 2018-10-01 DOI: 10.1109/CLEI.2018.00062

Clodis Boscarioli, L. Torres, G. Krüger, M. Oyamada

引用次数: 1