2014 9th Iberian Conference on Information Systems and Technologies (CISTI)最新文献

Usability evaluation in Brazil: A systematic mapping 巴西的可用性评估:一个系统的地图

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-08-14 DOI: 10.1109/CISTI.2014.6877047

Lourival Francisco, Fabiane Barreto Vavassori Benitti

引用次数: 0

Security/privacy of wearable fitness tracking IoT devices 可穿戴健身跟踪物联网设备的安全性/隐私性

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-06-18 DOI: 10.1109/CISTI.2014.6877073

Wei Zhou, S. Piramuthu

引用次数: 87

Extension of the Brazilian Federal government Budget ontology to support the representation of geolocated human development indicators 扩展巴西联邦政府预算本体论，以支持地理位置人类发展指标的代表性

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-06-18 DOI: 10.1109/CISTI.2014.6876938

D. A. da Silva, R. D. de Sousa, V. Martins, Evandro Nogueira Exposto, Fábio L. L. Mendonça, C. E. L. Veiga

引用次数: 1

Statistical study on cash balances of Portuguese companies 葡萄牙公司现金结余统计研究

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-06-18 DOI: 10.1109/CISTI.2014.6877054

Ana Paula Conceição, B. Faria, J. Moreira

{"title":"Statistical study on cash balances of Portuguese companies","authors":"Ana Paula Conceição, B. Faria, J. Moreira","doi":"10.1109/CISTI.2014.6877054","DOIUrl":"https://doi.org/10.1109/CISTI.2014.6877054","url":null,"abstract":"The cash balances of businesses have recently become one of the main topics of interest in the financial area. As a result of this interest, several studies and theories have been applied to this field, mainly to larger companies, and with a lesser application to the universe of small businesses. Portuguese business context is mainly composed by owner managed companies of the small businesses. The theoretical support that was considered most appropriate to back the analysis was the trade-off theory. The trade-off theory, in general terms, explains the amount of cash reported by companies on their balance sheets. This study is based on a sample of Portuguese manufacturing firms. It uses a methodology of econometric nature, based on models that were constructed to test if the tradeoff theory can explain the amount of cash held by these companies. The modeling considered four key variables (determinants) significant in the explanation of such amounts: the \"net working capital\", the \"debt\", the \"size\" and \"cash flow\". Moreover, after a closer analysis, the results indicate that there are significant differences when if there is or not an auditor that certifies the accounts of the companies is added as control.","PeriodicalId":217647,"journal":{"name":"2014 9th Iberian Conference on Information Systems and Technologies (CISTI)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125530572","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

Tweeting in an educational community 在教育社区发推特

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-06-18 DOI: 10.1109/CISTI.2014.6877063

Jorge Manuel Silveira Sampaio, Sonia Rolland Sobral

引用次数: 1

Augmented reality in pneumatic conveying system: Fuller pump dry material line charger 增强现实在气力输送系统:富勒泵干料线充电器

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-06-18 DOI: 10.1109/CISTI.2014.6877050

Gabriel Pantoja, L. Garza, Eduardo González Mendívil

{"title":"Augmented reality in pneumatic conveying system: Fuller pump dry material line charger","authors":"Gabriel Pantoja, L. Garza, Eduardo González Mendívil","doi":"10.1109/CISTI.2014.6877050","DOIUrl":"https://doi.org/10.1109/CISTI.2014.6877050","url":null,"abstract":"The overall purpose of this project is to test the impact and potential benefits of Virtual and Augmented Reality technologies (AR&VR) to improve maintenance operation in industrial equipment. The main function for a Flapper valve of a Fuller-Kinyon type M pump is to prevent that the air generated to convey the bulk material through a conveying pipe flows inside of the material chute through the rotating screw. If this will occur, the material flow will decrease or even stop, causing a reduction of the pump capacity. Thus, it is necessary to maintain calibrated each flapper valve in the plant. This process of maintenance is done ten times per month, or when necessary, and it needs the pump to be shut down, taking up to two hours to finish the complete process. For this reason, an augmented reality application is being developed, aiming to reduce the consumed time by the maintenance process. Using this application, it is expected to dedicate less time training the new personnel responsible for the maintaining process, displaying tridimensional models, animations, images and text information that would simplify the instructions shown in a printed manual and adding an interactive environment between the users and the information displayed. A mobile device either a tablet or a smartphone is to be used as the hardware that will run the application, allowing the user to take it right to the working area, either in a workshop or directly in field. The information displayed includes CAD models of the pump and its components as well as animations illustrating the instructions to follow in each step of the process. Also, the right tool to use in each step will be indicated following by security warnings when needed. This project was developed from knowledge and experiences gathered among the different previous AR projects developed at ITESM. This information has been studied and \"best practices\" has been noted, learned and established to develop and implement AR.","PeriodicalId":217647,"journal":{"name":"2014 9th Iberian Conference on Information Systems and Technologies (CISTI)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116428709","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

State of the art of accessible development for smart devices: From a disable and not impaired point of view 智能设备无障碍开发技术的现状:从残疾和未受损的角度来看

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-06-18 DOI: 10.1109/CISTI.2014.6876937

J. de Sousa e Silva, António Pereira, R. Gonçalves, Silvia Gomes

{"title":"State of the art of accessible development for smart devices: From a disable and not impaired point of view","authors":"J. de Sousa e Silva, António Pereira, R. Gonçalves, Silvia Gomes","doi":"10.1109/CISTI.2014.6876937","DOIUrl":"https://doi.org/10.1109/CISTI.2014.6876937","url":null,"abstract":"The need and benefits of digital accessibility are evident and, with the current ubiquitous trends, the profits are hugely potentiated. However, the fast evolution is instigating some issues in this area's accessibility. To understand the conceivable impact of these issues' tenacity in society, general accessibility features are explained as a reasonable application for all parties. Nevertheless, the potential of ubiquitous computation in order to promote social integration of citizens with impairments is focused and elucidated. The benefits of applying so much effort on accessibility as well as on usability is asserted and related to universal design. Hence, in order to promote a more universal applications development, the mobile operating systems available in the market, which are more plausible to be chosen and used by people with impairments, are scrutinized and shown from a standpoint of a developer that has accessibility and usability concerns. The paper leads to the conclusions that ubiquitous computation may have power to nullify impairments but, to be assistive, several issues regarding the devices and the operating system that runs on them have to be taken in mind and considered.","PeriodicalId":217647,"journal":{"name":"2014 9th Iberian Conference on Information Systems and Technologies (CISTI)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117104153","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: 9

GLABS: Gamification for learning management systems 学习管理系统的游戏化

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-06-18 DOI: 10.1109/CISTI.2014.6876878

Sergi Villagrasa, D. Fonseca, M. Romo, E. Redondo

引用次数: 4

The incidence of AIDS in Portugal adjusted for reporting delay and underreporting 葡萄牙的艾滋病发病率根据报告延迟和漏报进行了调整

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-06-18 DOI: 10.1109/CISTI.2014.6877056

Alexandra Oliveira, J. Costa, A. R. Gaio

{"title":"The incidence of AIDS in Portugal adjusted for reporting delay and underreporting","authors":"Alexandra Oliveira, J. Costa, A. R. Gaio","doi":"10.1109/CISTI.2014.6877056","DOIUrl":"https://doi.org/10.1109/CISTI.2014.6877056","url":null,"abstract":"The Human Immunodeficiency Virus can evolve to severe illness having a major impact on socio-demographic and economic features of the affected countries. Most countries rely on surveillance systems to monitor the status of the epidemic which are based on cases notification by physicians. It can take several months until the diagnosed cases are notified and there are even cases that are not reported at all. The purpose of this paper is to adjust the Portuguese notification data to these main possible biasing problems. For the reporting delay we will use the traditional conditional likelihood estimation for count data assuming a Poisson distribution. For the cases that are not reported at all, we will use a mixture of Poisson distributions, based on natural conjugate prior distributions, and estimate the unknown parameters through maximum likelihood. The Poisson model suggests that approximately 80% of the Portuguese AIDS cases were reported within one year after the diagnosis and that the majority of cases were notified in the first three months. The BB/NBD model suggests that the probability of a new AIDS case being notified gets higher once a large amount of AIDS cases has been notified.","PeriodicalId":217647,"journal":{"name":"2014 9th Iberian Conference on Information Systems and Technologies (CISTI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129327323","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: 5

Intelligent management of urban garden irrigation 城市园林灌溉智能化管理

2014 9th Iberian Conference on Information Systems and Technologies (CISTI) Pub Date : 2014-06-18 DOI: 10.1109/CISTI.2014.6876907

Filipe Caetano, R. Pitarma, P. Reis

{"title":"Intelligent management of urban garden irrigation","authors":"Filipe Caetano, R. Pitarma, P. Reis","doi":"10.1109/CISTI.2014.6876907","DOIUrl":"https://doi.org/10.1109/CISTI.2014.6876907","url":null,"abstract":"The scarcity of water resources, associated with the growing need for water, is one of the most critical problems of humanity. At the same time, irregular rainfall, coupled with the occurrence of high temperatures, are strong obstacles to the preservation and growth of plants, causing high rates of water deficiency. Recently, several systems of soil monitoring and irrigation control have been developed with the aim of improving water use efficiency. This study describes a system (iRain), developed by the authors, which aims to ensure autonomous and efficient irrigation in urban gardens. It consists of a net of sensors and actuators with Zigbee communication and control software for storage and availability of monitoring data on a web portal in real time. In manual mode, the irrigation management is the responsibility of the irrigation manager in order to control the system from the portal. In automatic mode, the system prevents watering if there is a forecast of precipitation (up to 3 days) and if the humidity of the soil has not fallen below a critical value. In this mode the decision is made at the local base. The system also gives preference to irrigation at night and during periods of light wind in order to obtain more accurate and efficient irrigation. Thus, the iRain constitutes a valuable tool for promoting sustainable use of this scarce natural resource.","PeriodicalId":217647,"journal":{"name":"2014 9th Iberian Conference on Information Systems and Technologies (CISTI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123659989","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: 12