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检索条件"机构=Graduate Program on Applied Computing - UNISINOS"

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GUGA: A tool for participatory cities

GUGA: A tool for participatory cities

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18th IEEE Symposium on Computers and Communications, ISCC 2013

作者： Schunke, Luana Carine De Oliveira, Luiz Paulo Luna Villamil, Marta Becker Applied Computing Graduate Program University of Vale Do Rio Dos Sinos-Unisinos S˜ao Leopoldo-RS Brazil

ISBN: (纸本)9781479937554

Participatory cities are those that allow the participation of citizens in the construction and improvement of their common daily life. In this work we present a tool for that participation, allowing the citizens to register the occurrences as well as take knowledge about the global geographic status of their city in on a variety of contexts (security, transit, etc.). However, a tool like that, fed by the people, certainly will deal with a large amount of information, distributed geographically. To accomplish that, a precise criterion for visualizing the resultant density distribution of occurrences must be used. In this paper, we also propose an automatic method for that visualization based on Voronoi Diagrams. The Voronoi polygons divide the region according to the concentration of occurrences. In this scheme, the area of each Voronoi polygon defines the density of the occurrences of the specific categories which are shown in the city map in color and transparency intensities for visualization. This can easily reveal the space distribution of important issues, in a variety of contexts such as criminality, commercial and industrial activities, drugs traffic, illumination concerns, and others. © 2013 IEEE.

关键词： Visualization

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Visualization and analysis of interacting occurences in a smart city 19

Visualization and analysis of interacting occurences in a sm...

引用

19th IEEE Symposium on Computers and Communications, ISCC 2014

作者： Schunke, Luana Carine De Oliveira, Luiz Paulo Luna Villamil, Marta Becker Applied Computing Graduate Program Universidade Do Vale Do Rio Dos Sinos - Unisinos São Leopoldo - RS Brazil

ISBN: (纸本)9781479942787

New information and communication technologies enable a better management of the available resources in a smart city. Leaders need tools to analyze data for better decisions, anticipate problems and resolve them proactively. In this context, this article proposes a simulation tool to analyze the interaction of typical cities occurrences like criminal and police. The information of both occurrences, including their densities, are inserted and visualized on a city map. Each record is marked on the GPS point where it happened. From these inputs data, the interactions are modeled by Voronoi Diagrams. The occurrences change their position according to the size area of the opposite event. In this way, crimes runway from police and police catch crimes occurrences. As results, we show that a large increase of police actions will not influence quantitatively in the reduction of criminal occurrences out of a critical zone. © 2014 IEEE.

关键词： Crime

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U'Ductor: A model for supporting ubiquitous chronic disease care management

U'Ductor: A model for supporting ubiquitous chronic disease ...

引用

13th Symposium on computing Systems, WSCAD-SSC 2012

作者： Vianna, Henrique Barbosa, Jorge Costa, Cristiano Yamin, Adenauer C. Applied Computing Graduate Program - PIPCA UNISINOS São Leopoldo Brazil Computer Science - Polytechnic Center UCPEL Pelotas Brazil

ISBN: (纸本)9780769548470

Accordingly with the World Health Organization, heart disease, chronic respiratory diseases, cancer and diabetes are the most common chronic diseases and one of the leading causes of the mortality in the world. In such cases we need more than patient engagement to help to control of the disease, community and health organizations support is also desirable. These roles must support the patients' self-management activities, making them feel confident and motivated. This support can be accomplished by ubiquitous computing. The ubiquitous computing gives conditions to help chronic diseases patients in the management of their activities, offering support to them anytime, anywhere. In this context, this article presents U'Ductor, a model for supporting ubiquitous chronic care management, whose goal is to help the integration between patient and community resources. The U'Ductor gives a step forward in relation to the studied related works by integrating patients, community resources and community members. Those features were not completely explored in the studied works in the way we employ in U'Ductor. An implementation of the model was evaluated by a chronic patient, which gave a positive feedback about it. © 2012 IEEE.

关键词： Ubiquitous computing

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Analysis of positional and geometric accuracy of objects in survey with unmanned aerial vehicle (UAV) 38

Analysis of positional and geometric accuracy of objects in ...

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38th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2018

作者： Soares, Gabriel Inocencio, Leonardo Campos Veronez, Maurício Roberto Da Silveira, Luiz Gonzaga Bordin, Fabiane Marson, Fernando Pinho Advanced Visualization and Geoinformatics Laboratory UNISINOS São Leopoldo RS Brazil Graduate Program on Applied Computing UNISINOS Av. UNISINOS 950 São Leopoldo RS93022-000 Brazil

ISBN: (纸本)9781538671504

This study aimed the analysis of the positional and geometric accuracy of objects in orthomosaics obtained through different unmanned aerial vehicle (UAV) data processing software covering an area located within Universidade do Vale do Rio dos Sinos - unisinos in São Leopoldo, RS. A total of nine ground control points (GCP) and twenty checkpoints were surveyed in order register and classify the processed orthomosaics according to the cartographic accuracy standard - Padrão de Exatidão Cartográfica (PEC). Four software was employed to process the UAV data: Pix4D mapper, Agisoft PhotoScan, Menci APS and Bentley Context Capture. The results obtained from each software were compared and identified the smallest distortions when processing with and without ground control points. The flight was executed at a height of 90m with 60% sidelap and 80% overlap using an ST800 UAV equipped with a Sony NEX-7 small format non-metric camera with 24 megapixels resolution. The software GeoPEC was used to classify the orthomosaics according to PEC. For data processed with ground control points all orthomosaics were classified “Class A” in 1/500 scale, however, only Menci APS did not present a trend line via t-student test. On the other hand, Menci APS presented the worst results without the ground control points. In processing with GCP, all orthomosaics obtained optimum results with an approximated error of 2,5 m2 about 0,03% of the area. © 2018 IEEE

关键词： Cartographic Accuracy Standard Ground Control Points Orthomosaic Unmanned Aerial Vehicle

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A proposal of a mobile payment system based on android

A proposal of a mobile payment system based on android

引用

6th International Conference on Innovative Mobile and Internet Services in Ubiquitous computing, IMIS 2012

作者： Roehrs, Alex Da Costa, Cristiano André Barbosa, Jorge Luis Victória Applied Computing Graduate Program - PIPCA Universidade Do Vale Do Rio Dos Sinos - UNISINOS Sáo Leopoldo RS Brazil

ISBN: (纸本)9780769546841

This paper aims at presenting an architectural model proposal for a novel Mobile Payment System, called 4iPay. This work considers the following premises: independence of device, location, carrier and cardholder to meet the needs of executing payment transactions in ubiquitous commerce. Our proposal considers the convergence of concepts of ubiquity, unity, universality and unison to form the proposed model. This article describes the model, implementation, preliminary assessments and requirements for mobile payment in ubiquitous environments. We developed a prototype of 4iPay using Android smart phones. The prototype was evaluated in three different scenarios. © 2012 IEEE.

关键词： Android (operating system)

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Evaluating a New Approach to Data Fusion in Wearable Physiological Sensors for Stress Monitoring 9th

Evaluating a New Approach to Data Fusion in Wearable Physiol...

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9th Brazilian Conference on Intelligent Systems, BRACIS 2020

作者： Rodrigues, Clarissa Fröhlich, William R. Jabroski, Amanda G. Rigo, Sandro J. Rodrigues, Andreia de Castro, Elisa Kern Applied Computing Graduate Program UNISINOS São Leopoldo Brazil São Leopoldo Brazil Universidade Lusíada Lisboa Portugal

ISBN: (纸本)9783030613792

The physiological signs are a reliable source to identify stress states, and wearable sensors provide precise identification of physiological signs associated with the stress occurrence. The literature review shows that the use of physiological signs as a source for stress patterns identification is still a critical investigation subject. Few studies evaluate the effect of combining several different signals and the implications of the data acquisition procedures and details. This article’s objective is to investigate the possible integration of data obtained from heart rate variability, electrocardiographic, electrodermal activity, and electromyography to detect stress patterns, considering a new experimental protocol to data acquisition. The data acquisition involved the Trier Social Stress Test, wearable sensor monitoring, and complementary stress perception instruments, resulting in a publicly available dataset. This dataset was evaluated using different machine learning classifiers, considering the obtained annotated data and exploring different physiological features and their combinations. © 2020, Springer Nature Switzerland AG.

关键词： Data acquisition

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Cloud elasticity for HPC applications: Observing energy, performance and cost

Cloud elasticity for HPC applications: Observing energy, per...

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Conferencia Latinoamericana En Informatica (CLEI)

作者： Vinicius Facco Rodrigues Gustavo Rostirolla Rodrigo da Rosa Righi Cristiano André da Costa Jorge Luis Victoria Barbosa Applied Computing Graduate Program Unisinos São Leopoldo RS Brazil Applied Computing Graduate Program Unisinos RS Brazil

Elasticity is one of the most known capabilities related to cloud computing, being largely deployed using thresholds. In this way, limits are used to drive resource mangement actions, leading to the following problem statements: How can cloud users set the threshold values to enable elasticity in their cloud applications? And what is the impact of the application's load pattern in the elasticity? This article answers these questions for iterative high performance computing applications, showing the impact of both thresholds and load patterns on application performance and resource consumption. To accomplish this, we developed a reactive and PaaS-based elasticity model called AutoElastic and employed it over a private cloud to execute a numerical integration application. Here, we are presenting an analysis of best practices and possible optimizations regarding the elasticity and HPC pair. Considering the results, we observed that the upper threshold influences the application time more than the lower one.

关键词： Cloud computing Elasticity Computational modeling Manuals Monitoring High performance computing

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Dealing with standard and reverse motion of multi-legged robots joints

Dealing with standard and reverse motion of multi-legged rob...

引用

10th International Conference on Informatics in Control, Automation and Robotics, ICINCO 2013

作者： Llantada, Alan Gómez, Arthur Tórgo Villamil, Marta Becker Universidade do Vale do Rio dos Sinos Applied Computing - Graduate Program Av. Unisinos 950 Sao Leopoldo RS Brazil

ISBN: (纸本)9789898565716

Modelling of articulated figures such as simple hierarchical relationships are suitable for most cases of animation. Typically, for the representation of human and animal figures, a tree topology is sufficient. But complex high-dimensional articulated structures with many end-effectors and the movement that can be generated in any joint in any direction, are extremely complex to model. Multi-legged robots made to attend applications which needs the extreme versatility to climb or move into places of very difficult access are more efficient if its joints can perform motion at standard and reverse direction, its segments can be moved by more than one joint and any of its joints can be the root of the motion chain. This article presents an approach to deal with these gaps in modeling the motion topology of legged-robots based on rotation of joints references frames. We also present an aplication of an hybrid algorithm based on Genetic Algorithm and Tabu Search to find a good quality solution to the robot motion sequences.

关键词： Genetic algorithms

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Modeling and visualizing individual and global trends of a multi-agent system

Modeling and visualizing individual and global trends of a m...

引用

9th International Conference on Informatics in Control, Automation and Robotics, ICINCO 2012

作者： Nonnenmacher, Vinicius Villamil, Marta Becker De Oliveira, Luiz Paulo Luna Applied Computing-Graduate Program Universidade Do Vale Do Rio Dos Sinos Av. Unisinos 950 São Leopoldo Brazil

ISBN: (纸本)9789898565211

This paper proposes a new model for real-time visualization of the social dynamics as a resultant of individual changes due to their mutual interactions. The model allows the dynamical visualization of both, the individual characteristics changes as well as the resultant system trends as a whole. As an application, we investigated the role of individual degrees of influence and the number of agents in the global choice of a population between two antagonistic options.

关键词： Multi agent systems

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Redesigning transaction load balancing on electronic funds transfer scenarios 14

Redesigning transaction load balancing on electronic funds t...

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29th Annual ACM Symposium on applied computing, SAC 2014

作者： Da Rosa Righi, Rodrigo Da Costa, Cristiano André Gonzaga Jr., Luiz Farias, Kleinner Andrade, Alexandre Luis Graebin, Lucas Universidade do Vale do Rio dos Sinos Applied Computing Graduate Program Unisinos Av. 950 São Leopoldo RS Brazil

ISBN: (纸本)9781450324694

The use of electronic medias for payment has been increasingly adopted, instead of employing money in currency paper or check directly. Considering this electronic funds transfer (EFT) scenario, we developed a model called GetLB which comprises not only a completely new and efficient scheduler but also a cooperative communication infrastructure for handling heterogeneous and dynamic environments. The scientific contribution consists of a scheduling heuristic that combines static data from transactions and dynamic one from processing nodes to overcome the limitations of Round-Robin. Besides the GetLB's description, this article also presents a prototype evaluation by using both traces and configurations obtained with a real EFT company. Copyright 2014 ACM.

关键词： Scheduling

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