scholarly journals Modelagem de propriedades geológico-geotécnicas em solos de Belém do Pará

2021 ◽  
Vol 10 (2) ◽  
pp. e40810212664
Author(s):  
Marina Nascimento Alves Vieira ◽  
Camila Nascimento Alves ◽  
Vyviane dos Santos Ferreira ◽  
Cleisianne Nazaré Leite Barbosa
Keyword(s):  
Open Source ◽  
Modeling Software

O objetivo da pesquisa apresentada neste artigo foi realizar a modelagem de propriedades geológico-geotécnicas no subsolo de um bairro no município de Belém do Pará a partir de sondagem à percussão, usando como ferramenta a geoestatística. Para alcançar o objetivo realizou-se a catalogação do acervo técnico contendo 101 boletins de sondagem à percussão. Criou-se um banco de dados contendo os dados de coordenadas geográficas, tipo de solo, profundidade das camadas do solo, nível do lençol freático e Índice de Resistência à Penetração (NSPT), conforme a norma NBR 6484/2001. Os dados foram analisados em ambiente SIG (Sistema de Informação Geográfica) com softwares Open Source, como SGEMS (Standford Geoestatistical Modeling Software) para análise geoestatística e o software Qgis para análises cartográficas. Distinguiu-se duas zonas díspares na região de estudo, denominadas de Zona A e Zona B. A Zona A é considerada uma região com os maiores índices de resistência dos solos e a Zona B uma região com menores índices de resistência, conforme demonstrado nos mapas. Na região ocorrem argilas orgânicas de baixa resistência nas proximidades das áreas de várzea, onde no passado eram localizados os igarapés. No entanto, esses locais foram retificados durante o processo de urbanização. E, atualmente, localizam-se as regiões de baixa resistência descritas nos resultados desta pesquisa.

scholarly journals Characteristics, potentials, and limitations of open-source Simulink projects for empirical research

2021 ◽  
Author(s):  
Alexander Boll ◽  
Florian Brokhausen ◽  
Tiago Amorim ◽  
Timo Kehrer ◽  
Andreas Vogelsang
Keyword(s):  
Open Source ◽  
Empirical Research ◽  
Code Generation ◽  
Quality Analysis ◽  
Academic Context ◽  
Early Validation ◽  
Modeling Software ◽  
Development Context ◽  
The One ◽  
Automated Code Generation

AbstractSimulink is an example of a successful application of the paradigm of model-based development into industrial practice. Numerous companies create and maintain Simulink projects for modeling software-intensive embedded systems, aiming at early validation and automated code generation. However, Simulink projects are not as easily available as code-based ones, which profit from large publicly accessible open-source repositories, thus curbing empirical research. In this paper, we investigate a set of 1734 freely available Simulink models from 194 projects and analyze their suitability for empirical research. We analyze the projects considering (1) their development context, (2) their complexity in terms of size and organization within projects, and (3) their evolution over time. Our results show that there are both limitations and potentials for empirical research. On the one hand, some application domains dominate the development context, and there is a large number of models that can be considered toy examples of limited practical relevance. These often stem from an academic context, consist of only a few Simulink blocks, and are no longer (or have never been) under active development or maintenance. On the other hand, we found that a subset of the analyzed models is of considerable size and complexity. There are models comprising several thousands of blocks, some of them highly modularized by hierarchically organized Simulink subsystems. Likewise, some of the models expose an active maintenance span of several years, which indicates that they are used as primary development artifacts throughout a project’s lifecycle. According to a discussion of our results with a domain expert, many models can be considered mature enough for quality analysis purposes, and they expose characteristics that can be considered representative for industry-scale models. Thus, we are confident that a subset of the models is suitable for empirical research. More generally, using a publicly available model corpus or a dedicated subset enables researchers to replicate findings, publish subsequent studies, and use them for validation purposes. We publish our dataset for the sake of replicating our results and fostering future empirical research.

scholarly journals Model Evaluasi Perangkat Lunak: Pemodelan Visual Berbasis Open Source

2011 ◽  
Vol 2 (2) ◽  
pp. 923
Author(s):  
Harijanto Pangestu
Keyword(s):  
User Interface ◽  
Open Source ◽  
Evaluation Model ◽  
Visual Modeling ◽  
Modeling Software ◽  
Evaluation Approaches

Visual modeling softwares are numerously available based on both open source and proprietary. However, the softwares are not easy to use and tools available are so confusing for users. Therefore, the evaluation model is needed to choose the proper software. The purpose of this study is to create a model to evaluate the visual modeling software from the user interface and usability. Studied softwares are open source-based because they can be obtained easily for free. The softwares are Umleditor, Umlpad, Violet UML editor, ArgoUML, HE, StarUML, UMLet, Winbrello. This evaluation model is also able to evaluate other softwares. This evaluation uses DECIDE framework which is a guiding framework for evaluation. Evaluation approaches and techniques used are GOMS approach. The final results of this study is an evaluation model that provides software recommendations, namely UMLet 9.1 as well as one which has good usability, like effectiveness, safety, good utility, learnability, memorability, although for efficiency it gets the second place compared to DIA. 

scholarly journals New Capabilities of EvoBot: A Modular, Open-Source Liquid-Handling Robot

2017 ◽  
Vol 22 (5) ◽  
pp. 500-506 ◽  
Author(s):  
Farzad Nejatimoharrami ◽  
Andres Faina ◽  
Kasper Stoy
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Low Cost ◽  
Integrated Analysis ◽  
Experiment Data ◽  
Time Interaction ◽  
Modeling Software ◽  
Offline Processing ◽  
Liquid Handling Robot

We introduce a robot developed to perform feedback-based experiments, such as droplet experiments, a common type of experiments in artificial chemical life research. These experiments are particularly well suited for automation because they often stretch over long periods of time, possibly hours, and often require that the human takes action in response to observed events such as changes in droplet size, count, shape, or clustering or declustering of multiple droplets. Our robot is designed to monitor long-term experiments and, based on the feedback from the experiment, interact with it. The combination of precise automation, accurately collected experiment data, and integrated analysis and modeling software makes real-time interaction with the experiment feasible, as opposed to traditional offline processing of experiments. Last but not least, we believe the low cost of our platform can promote artificial life research. Furthermore, prevalently, findings from an experiment will inspire redesign for novel experiments. In addition, the robot’s open-source software enables easy modification of experiments. We will cover two case studies for application of our robot in feedback-based experiments and demonstrate how our robot can not only automate these experiments, collect data, and interact with the experiments intelligently but also enable chemists to perform formerly infeasible experiments.

Introducing OpenPNM: An Open Source Pore Network Modeling Software Package

2013 ◽  
Vol 58 (1) ◽  
pp. 79-86 ◽  
Author(s):  
A. Putz ◽  
J. Hinebaugh ◽  
M. Aghighi ◽  
H. Day ◽  
A. Bazylak ◽  
...  
Keyword(s):  
Open Source ◽  
Software Package ◽  
Network Modeling ◽  
Pore Network ◽  
Pore Network Modeling ◽  
Modeling Software

scholarly journals HatchFrac: A fast open-source DFN modeling software

2021 ◽  
Author(s):  
Weiwei Zhu ◽  
Siarhei Khirevich ◽  
Tad W Patzek
Keyword(s):  
Open Source ◽  
Modeling Software

scholarly journals Web Platform for Sharing Modeling Software in the Field of Nonlinear Optics

2018 ◽  
Vol 173 ◽  
pp. 05007
Author(s):  
Julia Dubenskaya ◽  
Alexander Kryukov ◽  
Andrey Demichev
Keyword(s):  
Nonlinear Optics ◽  
Open Source ◽  
Computer Modeling ◽  
Application Server ◽  
External Application ◽  
Wide Range ◽  
Modeling Software ◽  
Software Programs ◽  
Web Platform

We describe the prototype of a Web platform intended for sharing software programs for computer modeling in the rapidly developing field of the nonlinear optics phenomena. The suggested platform is built on the top of the HUBZero open-source middleware. In addition to the basic HUBZero installation we added to our platform the capability to run Docker containers via an external application server and to send calculation programs to those containers for execution. The presented web platform provides a wide range of features and might be of benefit to nonlinear optics researchers.

scholarly journals Analysis of Open Source Simulation Applications

2020 ◽  
Vol 7 (12) ◽  
pp. 292-306
Author(s):  
Balaji Janamanchi
Keyword(s):  
Operating System ◽  
Open Source ◽  
Open Source Software ◽  
Simulation Modeling ◽  
End Users ◽  
The Other ◽  
Online Service ◽  
Science And Engineering ◽  
Software Application ◽  
Modeling Software

This study seeks to understanding the growth and popularity of Open Source Software (OSS) development for simulation modeling under Science and Engineering domain on SourceForge online service platform. The objectives include understanding the importance, if any, of the features such as, license type, programming language, Operating System version, review rating in influencing the popularity of a given software application as measured by downloads. For obvious reasons, end-users select and adopt specific applications based on their usage needs and the suitability of a given application in meeting their needs. Nevertheless, some applications may be easily adoptable than the other given the different options available for customization as well as scalability opportunities present in an application. So, other factors remaining common, popularity gained by an application with the increased downloads tends to draw prospective users to a specific application more than the others. This study analyses the availability and accessibility of simulation modeling software on the Source Forge website, undeniably, a very large repository of open source software resources. Limiting the search to “Simulations” within “Science and Engineering” domain /category. The top 250 applications’ data is downloaded and analyzed. Useful insights and metrics are developed and compiled to assist end-users to understand the profile of open source simulation applications available for users for free downloads.

scholarly journals Chrono::Render: A Graphical Visualization Pipeline for Multibody Dynamics Simulations

2014 ◽  
Author(s):  
Daniel Kaczmarek ◽  
Aaron Bartholomew ◽  
Felipe Gutierrez ◽  
Hammad Mazhar ◽  
Dan Negrut
Keyword(s):  
Open Source ◽  
Multibody Dynamics ◽  
High Performance ◽  
Dynamics Simulation ◽  
High Quality ◽  
Front End ◽  
Modeling Software ◽  
Dynamics Simulations ◽  
Client Side ◽  
Rendering Engine

This paper describes a web-enabled tool capable of generating high quality videos and images from multibody dynamics simulation results. This tool, called Chrono::Render, uses the Blender modeling software as the front end with Pixars RenderMan used to create high quality images. Blender is a free and open source tool used to create and visualize 3D content and provides a robust plugin framework which Chrono::Render leverages. To produce the final image, the Blender front end passes data to a RenderMan compliant rendering engine. Along with Pixars PhotoRealistic RenderMan (PRMan), several open source options such as Aqsis, JrMan, or Pixie can be used. Preprocessing is performed on the client side, where the front end generates a work order for the RenderMan compliant rendering engine to process. This work order, which contains several scripts that define the visualization parameters, along with the pre-processed simulation data and other user-defined geometry assets is uploaded to a remote server hosted by the Simulation Based Engineering Lab. This server contains more than a thousand CPU cores used for high performance computing applications, which can be used to render many frames of an animation in parallel. Chrono::Render is free and open source software released under a BSD3 license.

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