Theoretical and Applied Informatics最新文献

{"title":"Performance indicators in higher education with learning analytics","authors":"Carlos Morais, P. Alves, Luisa Miranda","doi":"10.26729/JADI.V3I2.2466","DOIUrl":"https://doi.org/10.26729/JADI.V3I2.2466","url":null,"abstract":"The regular use of virtual learning environments by educational institutions and the availability of large quantities of data regarding the teaching and learning process both challenge teachers, institutions and researchers to explore such data within the perspective of learning analytics in order to obtain indicators which might contribute to the improvement of the teaching and learning process. Consequently, such improvement may lead to students’ better learning outcomes as well as a better relationship with the institution they attend. Taking into account that student retention and dropout from degree courses before their completion have highly negative consequences for a high number of students, the aim of this research is to look into indicators associated with such problems through a mixed methodology, both qualitative and quantitative, and through procedures of analysis and research of data from databases containing academic information provided by a sample of 1,588 undergraduates. The focus of the study lies upon the relation and analysis of the following variables: students’ frequency of access per course unit to the virtual environment of the institution they attend; quantity of course units passed; and mean of the marks obtained in the course units passed. Among the results obtained, we highlight the existence of a positive degree of association with moderate correlation between the variables frequency of access per course unit to the virtual environment and the mean of the number of course units passed. Following the division of the sample into four different groups, each group corresponding to one quartile, resulting from the data regarding the frequency of accesses per course unit to the institution’s virtual environment, significant differences were found concerning the mean of the course units passed between the groups showing a higher frequency of access to the virtual learning environment and those with a lower access frequency, to the advantage of the groups showing a higher frequency of access to the virtual environment. Therefore, considering the way the groups were constituted, there is proof that the higher the frequency of access to the virtual environment is, the higher the probability of students succeeding in the course units they attend will be.","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133939114","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":"Applying the Particle Swarm Optimization + Hill-climbing in the Flexible Job-Shop problem","authors":"João Baptista Cardia, E. Kato","doi":"10.26729/JADI.V3I2.2430","DOIUrl":"https://doi.org/10.26729/JADI.V3I2.2430","url":null,"abstract":"The Flexible Job-Shop problem is a very interesting and important problem. In this paper it is studied an approach of the PSO (Particle Swarm Optimization) in the Flexible Job-Shop problem, the studied and applied approach is derived from a Travelling Salesman Problem solution with a few minor alterations, trying to reach the optimum values discovered by a series of other works. It is used only PSO and not mixed with any other auxiliary meta-heuristic.","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122454128","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":"SPLIMBo – Developing and Evaluating a Software Product Line for Cross-Platform IM Bots","authors":"V. T. Sarinho","doi":"10.26729/JADI.V3I2.2463","DOIUrl":"https://doi.org/10.26729/JADI.V3I2.2463","url":null,"abstract":"","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129486165","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":"PQC: ELGAMAL GF(251^8) BENCHMARK","authors":"J. Hecht","doi":"10.20904/284001-SUPP2","DOIUrl":"https://doi.org/10.20904/284001-SUPP2","url":null,"abstract":"","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"516 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133235034","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":"PQC: ELGAMAL GF(251^8) CIPHER SAMPLE","authors":"J. Hecht","doi":"10.20904/284001-SUPP1","DOIUrl":"https://doi.org/10.20904/284001-SUPP1","url":null,"abstract":"","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130155613","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":"Learning path based-portfolio for personalized learning","authors":"L. Romero, M. Gutiérrez, Laura Caliusco","doi":"10.26729/JADI.V3I1.2447","DOIUrl":"https://doi.org/10.26729/JADI.V3I1.2447","url":null,"abstract":"Fil: Romero, Lucila. Universidad Nacional del Litoral. Facultad de Ingenieria y Ciencias Hidricas; Argentina","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123437149","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":"Analysis of the NASH Efficiency Indicators in Brazilian Federal University Hospitals via Business Intelligence","authors":"Carlo Alessandro Melo Noce, G. A. Nze, L. Brasil","doi":"10.26729/JADI.V3I1.2458","DOIUrl":"https://doi.org/10.26729/JADI.V3I1.2458","url":null,"abstract":"The hospital area is constantly in need of care and attention. Because of its urgencies, it has vulnerabilities and risks that hinder the quality of hospital management. Technological management tools are effective in improving processes and strategic administration because they provide information reliability. The aim of this work is to propose to the Brazilian’s Federal University Hospitals (BFUHs) and to the Brazilian Hospital Services Company (BHSC) the use of an open source Business Intelligence (BI) tool, Pentaho, to analyze the efficiency of Hospital Indicators (HIs) and to support the clinical decision-making. This paper describes BI and Pentaho, as well as the main points of the efficiency documentations established by the National Agency of Supplementary Health (NASH), with emphasis on the HIs: Hospital Occupancy Rates (HORs) and Averages Length of Stay (ALSs). The Pentaho does the data extraction and the transformation, as well as loading them into the Data Warehouse (DW), all based on a relational database from BHSC. After that, dimensional cubes are created for the generation of graphic panels in dashboards. Most BHSC hospitals are not yet adequately using their operational beds and neither managing correctly the average length of hospitals patients stay, being outside the goals established by NASH. Several steps are taken to achieve efficient hospital administration. However, the joint working of Information and Communication Technologies (ICTs) solutions with the health area and its standards provides a major step towards efficient hospital management.","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130351275","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":"Evaluation of a Cloud Computing Environment by different Strategies of Sensitivity Analysis","authors":"Rosangela Melo, Maria Clara Bezerra, J. Dantas, R. Matos, I. Melo, P. Maciel","doi":"10.26729/JADI.V3I1.2442","DOIUrl":"https://doi.org/10.26729/JADI.V3I1.2442","url":null,"abstract":"For several years, cloud computing systems have been generating debate and interest within IT corporations. These cloud computing environments provide storage and processing systems that are adaptable, efficient and simple, thus allowing for rapid infrastructure modifications to be made, according to constantly changing workloads. Organizations of any size and type are migrating to the cloud supporting solutions based on Web. Due to the benefits of the pay-per-use model and scalability factors, services such as Video Streaming. Recent failure events in Video Streaming services have demonstrated the critical importance of maintaining high availability in cloud computing infrastructures. One of the methods used to identify the trends of occurrences of failures in computational systems, occurs through the application of strategies of sensitivity analysis. This paper uses hierarchical modeling and different sensitivity analysis techniques to determine the parameters that cause the greatest impact on the availability of a Video on Demand.  The results show that distinct approaches provide similar results regarding the sensitivity ranking, with specific exceptions. A combined evaluation indicates that system availability may be improved effectively by focusing on a reduced set of factors that produce large variation on the measure of interest.","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127906940","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":"The Promotion of the 21st Century Learning Skills Through the Development of Games Using Scratch","authors":"Ana Pinto, P. Escudeiro","doi":"10.26729/jadi.v3i1.2437","DOIUrl":"https://doi.org/10.26729/jadi.v3i1.2437","url":null,"abstract":"The work described in this paper addresses the development of a game focused on a teaching strategy based on an action-research study. The strategy established aims to test the impact of the student’s participation in a collaborative project. The project aimed to motivate students to use and learn foreign languages and also to develop their intercultural communicative competence.  The team consisted of 14 teachers from 11 different countries and 167 students in an international educational context. Regarding the Portuguese participation, we have introduced the Area of Study namely Discovery in a class from the 7th grade students (23 students). All the work was based in three premises: use Scratch online, web 2.0 and ETwinning platform. Students from different countries have worked together to develop their own games using programming Scratch. During the project, partners collaborated using web 2.0 tools and at the end, they have share their games and get feedback. This work identified the benefits and challenges of global education and intercultural interaction among students. Fourteen schools from 11 European countries have   participated in this eTwinning project. Six schools had won the European quality eTwinning label. The methodology applied in this learning environment motivated the students and improved their learning process. It also contributed to a higher level of concentration and promoted collaborative learning. Additionally, it facilitates creativity, dialogue and the overall relationship among students. The results demonstrate that teachers perceive eTwinning as contributing towards the enhancement and development of global education through intercultural interaction. The pedagogic model based on the collaborative construction of knowledge was easily understood by the teachers.","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"287 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127403285","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":"Chemis3 - Uma Proposta de Jogo para o Ensino de Ciências","authors":"C. P. Júnior, Zara Hoffmann, R. E. Francisco, C. P. Castro, G. S. Santos, Thais Aires","doi":"10.26729/jadi.v3i1.2456","DOIUrl":"https://doi.org/10.26729/jadi.v3i1.2456","url":null,"abstract":"","PeriodicalId":413417,"journal":{"name":"Theoretical and Applied Informatics","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125642218","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}