scholarly journals Problem Based Learning on Cloud Economics Analysis Using Open Source Simulation

2016 ◽  
Vol 12 (06) ◽  
pp. 4 ◽  
Author(s):  
Irfan Syamsuddin
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Data Center ◽  
High Speed ◽  
Energy Savings ◽  
Problem Based Learning ◽  
Simulation Software ◽  
Paper Report ◽  
Actual Case ◽  
Economics Analysis

The paper report the applicablity of open source simulation software called GreenCloud to assist a novel Problem Based Learning in a laboratory environment. The actual case of Indonesia government plan to deploy cloud based data center infrastructure was picked up as the actual case. In such case, cloud economics analysis is required along with technical one. An open source software called GreenCloud is suitebale to perform the simulation and analysis of cloud computing from economics perspective. It was applied into three models of cloud architecture namely Two-Tier, Three-Tier and Three-Tier High Speed and then analyzed in terms of their energy consumptions based on three options of cloud economics scheme, namely i) non energy savings, ii) Dynamics Voltage and Frequency Scaling (DVFS) and iii) Dynamics Shutdown (DNS).

scholarly journals PorePy: an open-source software for simulation of multiphysics processes in fractured porous media

2020 ◽  
Author(s):  
Eirik Keilegavlen ◽  
Runar Berge ◽  
Alessio Fumagalli ◽  
Michele Starnoni ◽  
Ivar Stefansson ◽  
...  
Keyword(s):  
Porous Media ◽  
Open Source ◽  
Open Source Software ◽  
Fractured Rocks ◽  
Fractured Reservoirs ◽  
Simulation Software ◽  
Coupled Processes ◽  
Fracture Networks ◽  
Flow And Transport ◽  
Multiphysics Problems

Abstract Development of models and dedicated numerical methods for dynamics in fractured rocks is an active research field, with research moving towards increasingly advanced process couplings and complex fracture networks. The inclusion of coupled processes in simulation models is challenged by the high aspect ratio of the fractures, the complex geometry of fracture networks, and the crucial impact of processes that completely change characteristics on the fracture-rock interface. This paper provides a general discussion of design principles for introducing fractures in simulators, and defines a framework for integrated modeling, discretization, and computer implementation. The framework is implemented in the open-source simulation software PorePy, which can serve as a flexible prototyping tool for multiphysics problems in fractured rocks. Based on a representation of the fractures and their intersections as lower-dimensional objects, we discuss data structures for mixed-dimensional grids, formulation of multiphysics problems, and discretizations that utilize existing software. We further present a Python implementation of these concepts in the PorePy open-source software tool, which is aimed at coupled simulation of flow and transport in three-dimensional fractured reservoirs as well as deformation of fractures and the reservoir in general. We present validation by benchmarks for flow, poroelasticity, and fracture deformation in porous media. The flexibility of the framework is then illustrated by simulations of non-linearly coupled flow and transport and of injection-driven deformation of fractures. All results can be reproduced by openly available simulation scripts.

scholarly journals Open-Source Software for Electromagnetic Scattering Simulation: The Case of Antenna Design

Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1506 ◽  
Author(s):  
Alessandro Fedeli ◽  
Claudio Montecucco ◽  
Gian Luigi Gragnani
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Electromagnetic Scattering ◽  
Simulation Software ◽  
Antenna Design ◽  
Electromagnetic Simulation ◽  
Academic World ◽  
Introductory Overview ◽  
Commercial Program

Electromagnetic scattering simulation is an extremely wide and interesting field, and its continuous evolution is associated with the development of computing resources. Undeniably, antenna design at all levels strongly relies on electromagnetic simulation software. However, despite the large number and the high quality of the available open-source simulation packages, most companies have no doubts about the choice of commercial program suites. At the same time, in the academic world, it is frequent to develop in-house simulation software, even from scratch and without proper knowledge of the existing possibilities. The rationale of the present paper is to review, from a practical viewpoint, the open-source software that can be useful in the antenna design process. To this end, an introductory overview of the usual design workflow is firstly presented. Subsequently, the strengths and weaknesses of open-source software compared to its commercial counterpart are analyzed. After that, the main open-source packages that are currently available online are briefly described. The last part of this paper is devoted to a preliminary numerical benchmark for the assessment of the capabilities and limitations of a subset of the presented open-source programs. The benchmark includes the calculation of some fundamental antenna parameters for four different typologies of radiating elements.

Developments on PlagZap, the Fast and Free Textual Plagiarism Detection Solution for Universities

2020 ◽  
Author(s):  
Elena Băutu ◽  
Andrei Băutu
Keyword(s):  
University Students ◽  
Open Source ◽  
Open Source Software ◽  
High Speed ◽  
Detection System ◽  
High Volume ◽  
Plagiarism Detection ◽  
Empirical Results ◽  
Ethics Policies ◽  
Cost Efficient

Abstract Plagiarism among university students is an important issue that affects their preparation and undermines the universities’ efforts to prepare skilled graduates. Universities try to fight this problem back with strict ethics policies, but they require the proper plagiarism detection tools, at affordable costs, to implement these policies. In this paper, we present PlagZap, a cost-efficient, high-volume and high-speed plagiarism detection system built using open-source software and designed to be used on textual student assignments. We discuss the advantages of this design, plagiarism obfuscation methods and empirical results from using PlagZap.

scholarly journals mmSIM: an open toolbox for accessible structured illumination microscopy

2021 ◽  
Vol 379 (2199) ◽  
Author(s):  
Craig T. Russell ◽  
Michael Shaw
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
High Speed ◽  
Super Resolution ◽  
Software Tools ◽  
Structured Illumination ◽  
Structured Illumination Microscopy ◽  
Light Modulator ◽  
Wide Range ◽  
Hardware Designs

Since the first practical super-resolution structured illumination fluorescence microscopes (SIM) were demonstrated more than two decades ago, the method has become increasingly popular for a wide range of bioimaging applications. The high cost and relative inflexibility of commercial systems, coupled with the conceptual simplicity of the approach and the desire to exploit and customize existing hardware, have led to the development of a large number of home-built systems. Several detailed hardware designs are available in the scientific literature, complemented by open-source software tools for SIM image validation and reconstruction. However, there remains a lack of simple open-source software to control these systems and manage the synchronization between hardware components, which is critical for effective SIM imaging. This article describes a new suite of software tools based on the popular Micro-Manager package, which enable the keen microscopist to develop and run a SIM system. We use the software to control two custom-built, high-speed, spatial light modulator-based SIM systems, evaluating their performance by imaging a range of fluorescent samples. By simplifying the process of SIM hardware development, we aim to support wider adoption of the technique. This article is part of the Theo Murphy meeting issue ‘Super-resolution structured illumination microscopy (part 1)’.

GIS-Based Noise Simulation Open Source Software: N-GNOIS

2014 ◽  
Vol 14 (01) ◽  
pp. 1550005 ◽  
Author(s):  
Ritesh Vijay ◽  
A. Sharma ◽  
M. Kumar ◽  
V. Shende ◽  
T. Chakrabarti ◽  
...  
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Simulation Software ◽  
Geographical Information ◽  
Noise Component ◽  
Cumulative Impact ◽  
Mobile Sources ◽  
Noise Simulation ◽  
User Friendly ◽  
The Impact

Geographical information system (GIS)-based noise simulation software (N-GNOIS) has been developed to simulate the noise scenario due to point and mobile sources considering the impact of geographical features and meteorological parameters. These have been addressed in the software through attenuation modules of atmosphere, vegetation and barrier. N-GNOIS is a user friendly, platform-independent and open geospatial consortia (OGC) compliant software. It has been developed using open source technology (QGIS) and open source language (Python). N-GNOIS has unique features like cumulative impact of point and mobile sources, building structure and honking due to traffic. Honking is the most common phenomenon in developing countries and is frequently observed on any type of roads. N-GNOIS also helps in designing physical barrier and vegetation cover to check the propagation of noise and acts as a decision making tool for planning and management of noise component in environmental impact assessment (EIA) studies.

scholarly journals mmSIM: An open toolbox for accessible structured illumination microscopy

2021 ◽  
Author(s):  
Craig T. Russell ◽  
Michael Shaw
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
High Speed ◽  
Super Resolution ◽  
Software Tools ◽  
Structured Illumination ◽  
Structured Illumination Microscopy ◽  
Light Modulator ◽  
Wide Range ◽  
Hardware Designs

SummarySince the first practical super-resolution structured illumination fluorescence microscopes (SIM) were demonstrated more than two decades ago the method has become increasingly popular for a wide range of bioimaging applications. The high cost and relative inflexibility of commercial systems, coupled with the conceptual simplicity of the approach and the desire to exploit and customise existing hardware, have led to the development of a large number of home-built systems. Several detailed hardware designs are available in the scientific literature, complemented by open-source software tools for SIM image validation and reconstruction. However, there remains a lack of simple open-source software to control these systems and manage the synchronization between hardware components, which is critical for effective SIM imaging. This article describes a new suite of software tools based on the popular Micro-Manager package, which enable the keen microscopist to develop and run a SIM system. We use the software to control two custom-built, high-speed, spatial light modulator-based SIM systems, evaluating their performance by imaging a range of fluorescent samples. By simplifying the process of SIM hardware development, we aim to support wider adoption of the technique.

scholarly journals Open Source Software for Libraries: from Greenstone to the Virtual Data Center and Beyond

2002 ◽  
Vol 25 (4) ◽  
pp. 5 ◽  
Author(s):  
Micah Altman
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Data Center ◽  
Virtual Data Center ◽  
Virtual Data

Open Source Software for Libraries: from Greenstone to the Virtual Data Center and Beyond

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