WorldWideScience

Sample records for building simulation software

  1. Comparative Validation of Building Simulation Software

    DEFF Research Database (Denmark)

    Kalyanova, Olena; Heiselberg, Per

    _2 and DSF200_4, the third empirical test case is also specified as DSF400_3, but it's completion is under consideration. The comparative test cases can not be directly used for the validation of the software due to often disagreement of the results, however the result of the exercises...... is that the comparative validation can be regarded as the main argument to continue the validation of the building simulation software for the buildings with the double skin façade with the empirical validation test cases.......The scope of this subtask is to perform a comparative validation of the building simulation software for the buildings with the double skin façade. The outline of the results in the comparative validation identifies the areas where is no correspondence achieved, i.e. calculation of the air flow...

  2. Empirical Validation of Building Simulation Software

    DEFF Research Database (Denmark)

    Kalyanova, Olena; Heiselberg, Per

    The work described in this report is the result of a collaborative effort of members of the International Energy Agency (IEA), Task 34/43: Testing and validation of building energy simulation tools experts group.......The work described in this report is the result of a collaborative effort of members of the International Energy Agency (IEA), Task 34/43: Testing and validation of building energy simulation tools experts group....

  3. A Software Architecture for Simulation Support in Building Automation

    Directory of Open Access Journals (Sweden)

    Sergio Leal

    2014-07-01

    Full Text Available Building automation integrates the active components in a building and, thus, has to connect components of different industries. The goal is to provide reliable and efficient operation. This paper describes how simulation can support building automation and how the deployment process of simulation assisted building control systems can be structured. We look at the process as a whole and map it to a set of formally described workflows that can partly be automated. A workbench environment supports the process execution by means of improved planning, collaboration and deployment. This framework allows integration of existing tools, as well as manual tasks, and is, therefore, many more intricate than regular software deployment tools. The complex environment of building commissioning requires expertise in different domains, especially lighting, heating, ventilation, air conditioning, measurement and control technology, as well as energy efficiency; therefore, we present a framework for building commissioning and describe a deployment process that is capable of supporting the various phases of this approach.

  4. Building Software for Simulation Theory and Algorithms, with Applications in C++

    CERN Document Server

    Nutaro, James

    2010-01-01

    This book offers a concise introduction to the art of building simulation software. It clearly demonstrates the five skills necessary for building simulations of complicated systems: abstractions for simulation dynamic systems; basic simulation algorithms for continuous and discrete event simulations; combining continuous and discrete event simulations into a coherent whole; strategies for testing a simulation; and theoretical foundations of the modeling constructs and simulation algorithms. This is indispensable reading for software programmers, developers, and engineers, and students in rela

  5. Empirical Validation of Building Simulation Software : Modeling of Double Facades

    DEFF Research Database (Denmark)

    Kalyanova, Olena; Heiselberg, Per

    The work described in this report is the result of a collaborative effort of members of the International Energy Agency (IEA), Task 34/43: Testing and validation of building energy simulation tools experts group.......The work described in this report is the result of a collaborative effort of members of the International Energy Agency (IEA), Task 34/43: Testing and validation of building energy simulation tools experts group....

  6. Building Software with Gradle

    CERN Document Server

    CERN. Geneva; Studer, Etienne

    2014-01-01

    In this presentation, we will give an overview of the key concepts and main features of Gradle, the innovative build system that has become the de-facto standard in the enterprise. We will cover task declaration and task graph execution, incremental builds, multi-project builds, dependency management, applying plugins, extracting reusable build logic, bootstrapping a build, and using the Gradle daemon. By the end of this talk, you will have a good understanding of what makes Gradle so powerful yet easy to use. You will also understand why companies like Pivotal, LinkedIn, Google, and other giants with complex builds count on Gradle. About the speakers Etienne is leading the Tooling Team at Gradleware. He has been working as a developer, architect, project manager, and CTO over the past 15 years. He has spent most of his time building software products from the ground up and successfully shipping them to happy customers. He had ...

  7. Methodology to Assess No Touch Audit Software Using Simulated Building Utility Data

    Energy Technology Data Exchange (ETDEWEB)

    Cheung, Howard [Purdue Univ., West Lafayette, IN (United States); Braun, James E. [Purdue Univ., West Lafayette, IN (United States); Langner, M. Rois [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2016-10-01

    This report describes a methodology developed for assessing the performance of no touch building audit tools and presents results for an available tool. Building audits are conducted in many commercial buildings to reduce building energy costs and improve building operation. Because the audits typically require significant input obtained by building engineers, they are usually only affordable for larger commercial building owners. In an effort to help small building and business owners gain the benefits of an audit at a lower cost, no touch building audit tools have been developed to remotely analyze a building's energy consumption.

  8. Developing Software Simulations

    Directory of Open Access Journals (Sweden)

    Tom Hall

    2007-06-01

    Full Text Available Programs in education and business often require learners to develop and demonstrate competence in specified areas and then be able to effectively apply this knowledge. One method to aid in developing a skill set in these areas is through the use of software simulations. These simulations can be used for learner demonstrations of competencies in a specified course as well as a review of the basic skills at the beginning of subsequent courses. The first section of this paper discusses ToolBook, the software used to develop our software simulations. The second section discusses the process of developing software simulations. The third part discusses how we have used software simulations to assess student knowledge of research design by providing simulations that allow the student to practice using SPSS and Excel.

  9. An Empirical Validation of Building Simulation Software for Modelling of Double-Skin Facade (DSF)

    DEFF Research Database (Denmark)

    Larsen, Olena Kalyanova; Heiselberg, Per; Felsmann, Clemens;

    2009-01-01

    Double-skin facade (DSF) buildings are being built as an attractive, innovative and energy efficient solution. Nowadays, several design tools are used for assessment of thermal and energy performance of DSF buildings. Existing design tools are well-suited for performance assessment of conventional...

  10. Software Build and Delivery Systems

    Energy Technology Data Exchange (ETDEWEB)

    Robey, Robert W. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-07-10

    This presentation deals with the hierarchy of software build and delivery systems. One of the goals is to maximize the success rate of new users and developers when first trying your software. First impressions are important. Early successes are important. This also reduces critical documentation costs. This is a presentation focused on computer science and goes into detail about code documentation.

  11. CMS Simulation Software

    CERN Document Server

    Banerjee, Sunanda

    2012-01-01

    The CMS simulation, based on the Geant4 toolkit, has been operational within the new CMS software framework for more than four years. The description of the detector including the forward regions has been completed and detailed investigation of detector positioning and material budget has been carried out using collision data. Detailed modeling of detector noise has been performed and validated with the collision data. In view of the high luminosity runs of the Large Hadron Collider, simulation of pile-up events has become a key issue. Challenges have raised from the point of view of providing a realistic luminosity profile and modeling of out-of-time pileup events, as well as computing issues regarding memory footprint and IO access. These will be especially severe in the simulation of collision events for the LHC upgrades; a new pileup simulation architecture has been introduced to cope with these issues. The CMS detector has observed anomalous energy deposit in the calorimeters and there has been a sub...

  12. CMS Simulation Software

    Science.gov (United States)

    Banerjee, S.

    2012-12-01

    The CMS simulation, based on the Geant4 toolkit, has been operational within the new CMS software framework for more than four years. The description of the detector including the forward regions has been completed and detailed investigation of detector positioning and material budget has been carried out using collision data. Detailed modeling of detector noise has been performed and validated with the collision data. In view of the high luminosity runs of the Large Hadron Collider, simulation of pile-up events has become a key issue. Challenges have raised from the point of view of providing a realistic luminosity profile and modeling of out-of-time pileup events, as well as computing issues regarding memory footprint and IO access. These will be especially severe in the simulation of collision events for the LHC upgrades; a new pileup simulation architecture has been introduced to cope with these issues. The CMS detector has observed anomalous energy deposit in the calorimeters and there has been a substantial effort to understand these anomalous signal events present in the collision data. Emphasis has also been given to validation of the simulation code including the physics of the underlying models of Geant4. Test beam as well as collision data are used for this purpose. Measurements of mean response, resolution, energy sharing between the electromagnetic and hadron calorimeters, shower shapes for single hadrons are directly compared with predictions from Monte Carlo. A suite of performance analysis tools has been put in place and has been used to drive several optimizations to allow the code to fit the constraints posed by the CMS computing model.

  13. Large Scale Software Building with CMake in ATLAS

    CERN Document Server

    Elmsheuser, Johannes; The ATLAS collaboration; Obreshkov, Emil; Undrus, Alexander

    2016-01-01

    The offline software of the ATLAS experiment at the LHC (Large Hadron Collider) serves as the platform for detector data reconstruction, simulation and analysis. It is also used in the detector trigger system to select LHC collision events during data taking. ATLAS offline software consists of several million lines of C++ and Python code organized in a modular design of more than 2000 specialized packages. Because of different workflows many stable numbered releases are in parallel production use. To accommodate specific workflow requests, software patches with modified libraries are distributed on top of existing software releases on a daily basis. The different ATLAS software applications require a flexible build system that strongly supports unit and integration tests. Within the last year this build system was migrated to CMake. A CMake configuration has been developed that allows one to easily set up and build the mentioned software packages. This also makes it possible to develop and test new and modifi...

  14. Building Intrusion Tolerant Software System

    Institute of Scientific and Technical Information of China (English)

    PENG Wen-ling; WANG Li-na; ZHANG Huan-guo; CHEN Wei

    2005-01-01

    In this paper, we describe and analyze the hypothesis about intrusion tolerance software system, so that it can provide an intended server capability and deal with the impacts caused by the intruder exploiting the inherent security vulnerabilities. We present some intrusion tolerance technology by exploiting N-version module threshold method in constructing multilevel secure software architecture, by detecting with hash value, by placing an "antigen" word next to the return address on the stack that is similar to human immune system, and by adding "Honey code" nonfunctional code to disturb intruder, so that the security and the availability of the software system are ensured.

  15. The ATLAS Simulation Software

    CERN Document Server

    Marshall, Z

    2008-01-01

    We present the status of the ATLAS Simulation Pro ject. Recent detector description improvements have focussed on commissioning layouts, implementation of inert material, and comparisons to the as-built detector. Core Simulation is reviewed with a focus on parameter optimizations, physics list choices, visualization, large-scale production, and validation. A fast simulation is also briefly described, and its performance is evaluated with respect to the full Simulation. Digitization, the last step of the Monte Carlo chain, is described, including developments in pile up and data overlay.

  16. ATLAS software configuration and build tool optimisation

    Science.gov (United States)

    Rybkin, Grigory; Atlas Collaboration

    2014-06-01

    ATLAS software code base is over 6 million lines organised in about 2000 packages. It makes use of some 100 external software packages, is developed by more than 400 developers and used by more than 2500 physicists from over 200 universities and laboratories in 6 continents. To meet the challenge of configuration and building of this software, the Configuration Management Tool (CMT) is used. CMT expects each package to describe its build targets, build and environment setup parameters, dependencies on other packages in a text file called requirements, and each project (group of packages) to describe its policies and dependencies on other projects in a text project file. Based on the effective set of configuration parameters read from the requirements files of dependent packages and project files, CMT commands build the packages, generate the environment for their use, or query the packages. The main focus was on build time performance that was optimised within several approaches: reduction of the number of reads of requirements files that are now read once per package by a CMT build command that generates cached requirements files for subsequent CMT build commands; introduction of more fine-grained build parallelism at package task level, i.e., dependent applications and libraries are compiled in parallel; code optimisation of CMT commands used for build; introduction of package level build parallelism, i. e., parallelise the build of independent packages. By default, CMT launches NUMBER-OF-PROCESSORS build commands in parallel. The other focus was on CMT commands optimisation in general that made them approximately 2 times faster. CMT can generate a cached requirements file for the environment setup command, which is especially useful for deployment on distributed file systems like AFS or CERN VMFS. The use of parallelism, caching and code optimisation significantly-by several times-reduced software build time, environment setup time, increased the efficiency of

  17. ATLAS software configuration and build tool optimisation

    CERN Document Server

    Rybkin, G; The ATLAS collaboration

    2014-01-01

    ATLAS software code base is over 6 million lines organised in about 2000 packages. It makes use of some 100 external software packages, is developed by more than 400 developers and used by more than 2500 physicists from over 200 universities and laboratories in 6 continents. To meet the challenge of configuration and building of this software, the Configuration Management Tool (CMT) is used. CMT expects each package to describe its build targets, build and environment setup parameters, dependencies on other packages in a text file called requirements, and each project (group of packages) to describe its policies and dependencies on other projects in a text project file. Based on the effective set of configuration parameters read from the requirements files of dependent packages and project files, CMT commands build the packages, generate the environment for their use, or query the packages. The main focus was on build time performance that was optimised within several approaches: reduction of the number of re...

  18. ATLAS software configuration and build tool optimisation

    CERN Document Server

    Rybkin, G; The ATLAS collaboration

    2013-01-01

    ATLAS software code base is over 6 million lines organised in about 2000 packages. It makes use of some 100 external software packages, is developed by more than 400 developers and used by more than 2500 physicists from over 200 universities and laboratories in 6 continents. To meet the challenge of configuration and building of this software, the Configuration Management Tool (CMT) is used. CMT expects each package to describe its build targets, build and environment setup parameters, dependencies on other packages in a text file called requirements, and each project (group of packages) to describe its policies and dependencies on other projects in a text project file. Based on the effective set of configuration parameters read from the requirements files of dependent packages and project files, CMT commands build the packages, generate the environment for their use, or query the packages. The main focus was on build time performance that was optimised within several approaches: reduction of the number of re...

  19. Building Blocks for Control System Software

    NARCIS (Netherlands)

    Broenink, J.F.; Hilderink, G.H.; Amerongen van, J.; Jonker, B.; Regtien, P.P.L.

    2001-01-01

    Software implementation of control laws for industrial systems seem straightforward, but is not. The computer code stemming from the control laws is mostly not more than 10 to 30% of the total. A building-block approach for embedded control system development is advocated to enable a fast and effici

  20. DEVELOPMENT OF FRASTA SIMULATION SOFTWARE

    Institute of Scientific and Technical Information of China (English)

    Y.G. Cao; K. Tanaka

    2006-01-01

    Fracture-surface topography analysis ( FRASTA ) was successfully used to simulate the process of crack and calculate parameters of crack such as the crack opening angle (COA) and crack-tip opening angle (CTOA). But because the amount of calculation is large, errors are often made during the course of calculation. FRASTA simulation software, namely fracture surface analyst (FSA) is developed and a series of center-cracked tension (CCT) and double edge notched (DEN)specimens of different materials with different sizes are tested, their fracture surfaces are scanned by non-contact 3D scanning system and the elevation data of the fracture surfaces is recorded.FSA used the recorded elevation data of fracture surfaces to simulate the process of crack based on the principle of FRASTA. Results show that FSA can accurately simulate the process and calculate the parameters of crack.

  1. Software Simulation of Hot Tearing

    DEFF Research Database (Denmark)

    Andersen, S.; Hansen, P.N.; Hattel, Jesper Henri

    1999-01-01

    the solidification rate and the strain rate of the hot tear prone areas. But, until recently it was only possible to simulate the solidification rate, so that the criteria could not be used effectively.Today, with new software developments, it is possible to also simulate the strain rate in the hot tear prone areas....... With this additional information, the criteria can, for the first time, be used to their full potential.The purpose of this paper is to first give an introduction to a stress/strain simulation procedure that can be used in any foundry. Then, some results how to predict the hot cracking tendency in a casting are shown......, and the use of simulation to reduce this tendency is illustrated....

  2. Dynamic simulation of a high efficiency building

    OpenAIRE

    Dot Bardolet, Núria

    2009-01-01

    The dynamic simulation of the heat transfer between buildings and their environment is situdied through the software TRNSYS. First, a very simple building is considered and the energy demand for heating evaluated through TRNSYS is compared with that obtained by apllying the Italian Standard UNI TS 11300-1:2008. This excersise has the purpose of verifying the correct use of the simulation program. Then, the annual energy demand for heating, cooling and humidity control, with reference to a wel...

  3. Automated Comparison of Building Energy Simulation Engines (Presentation)

    Energy Technology Data Exchange (ETDEWEB)

    Polly, B.; Horowitz, S.; Booten, B.; Kruis, N.; Christensen, C.

    2012-08-01

    This presentation describes the BEopt comparative test suite, which is a tool that facilitates the automated comparison of building energy simulation engines. It also demonstrates how the test suite is improving the accuracy of building energy simulation programs. Building energy simulation programs inform energy efficient design for new homes and energy efficient upgrades for existing homes. Stakeholders rely on accurate predictions from simulation programs. Previous research indicates that software tends to over-predict energy usage for poorly-insulated leaky homes. NREL is identifying, investigating, and resolving software inaccuracy issues. Comparative software testing is one method of many that NREL uses to identify potential software issues.

  4. Building Software, Building Community: Lessons from the Ropensci Project

    Science.gov (United States)

    Boettiger, C.

    2014-12-01

    rOpenSci is a developer collective originally formed in 2011 by graduate students and post-docs from ecology and evolutionary biology to collaborate on building software tools to facilitate a more open and synthetic approach in the face of transformative rise of large and heterogeneous data. Born on the internet (the collective only began through chance discussions over social media), we have grown into a widely recognized effort that supports an ecosystem of some 45software packages, engages scores of collaborators, has taught dozens of workshops around the world, and has secured over $480,000 in grant support. As young scientists working in an academic context largely without direct support for our efforts, we have first hand experience with most of the the technical and social challenges in developing sustainable scientific software. I will summarize our experiences, the challenges we have faced, and describe our approach and success in building an effective and diverse community around the rOpenSci project.

  5. Detailed weather data generator for building simulations

    CERN Document Server

    Adelard, L; Garde, F; Gatina, J -C

    2012-01-01

    Thermal buildings simulation softwares need meteorological files in thermal comfort, energetic evaluation studies. Few tools can make significant meteorological data available such as generated typical year, representative days, or artificial meteorological database. This paper deals about the presentation of a new software, RUNEOLE, used to provide weather data in buildings applications with a method adapted to all kind of climates. RUNEOLE associates three modules of description, modelling and generation of weather data. The statistical description of an existing meteorological database makes typical representative days available and leads to the creation of model libraries. The generation module leads to the generation of non existing sequences. This software tends to be usable for the searchers and designers, by means of interactivity, facilitated use and easy communication. The conceptual basis of this tool will be exposed and we'll propose two examples of applications in building physics for tropical hu...

  6. Software-Engineering Process Simulation (SEPS) model

    Science.gov (United States)

    Lin, C. Y.; Abdel-Hamid, T.; Sherif, J. S.

    1992-01-01

    The Software Engineering Process Simulation (SEPS) model is described which was developed at JPL. SEPS is a dynamic simulation model of the software project development process. It uses the feedback principles of system dynamics to simulate the dynamic interactions among various software life cycle development activities and management decision making processes. The model is designed to be a planning tool to examine tradeoffs of cost, schedule, and functionality, and to test the implications of different managerial policies on a project's outcome. Furthermore, SEPS will enable software managers to gain a better understanding of the dynamics of software project development and perform postmodern assessments.

  7. Software-Engineering Process Simulation Model (SEPS)

    OpenAIRE

    Lin, C. Y.; Abdel-Hamid, T.; Sherif, J.S.

    1999-01-01

    This article describes tlie Software-Engineering Process Simulation (SEPS) model developed at JPL. SEPS is a dynamic simulation model of the software project-development process. It uses the feedback principles of system dynamics to simulate the dynamic interactions among various software life-cycle development activities and management decision-making processes. The model is designed to be a planning tool to examine trade-offs of cost, schedule, and functionality, and to test ...

  8. Building X-ray Diffraction Calibration Software

    Energy Technology Data Exchange (ETDEWEB)

    Lande, Joshua; /Marlboro Coll.

    2007-10-31

    X-ray diffraction is a technique used to analyze the structure of crystals. It records the interference pattern created when x-rays travel through a crystal. Three dimensional structure can be inferred from these two dimensional diffraction patterns. Before the patterns can be analyzed, diffraction data must be precisely calibrated. Calibration is used to determine the experimental parameters of the particular experiment. This is done by fitting the experimental parameters to the diffraction pattern of a well understood crystal. Fit2D is a software package commonly used to do this calibration but it leaves much to be desired. In particular, it does not give very much control over the calibration of the data, requires a significant amount of manual input, does not allow for the calibration of highly tilted geometries, does not properly explain the assumptions that it is making, and cannot be modified. We build code to do this calibration while at the same time overcoming the limitations of Fit2D. This paper describes the development of the calibration software and the assumptions that are made in doing the calibration.

  9. 利用Proteus软件构建单片机虚拟仿真实验室%Making Use of Software “Proteus” to Build MCU Virtual Simulation Laboratories

    Institute of Scientific and Technical Information of China (English)

    徐小栋; 胡春; 董守昆; 范端云; 郭再云

    2012-01-01

    From the analysis of the pros and cons of traditional microcontroller lab, this essay elaborates the reason why it is necessary to build a virtual simulation laboratory, and then put forward a framework and a plan to build MCU virtual simulation labs by using software "Proteus". Based on the characteristics of the experimental platform of "Proteus", the essay also discusses the contents and the experimental methods of discussed the contents and the experimental methods of MCU Virtual Simulation. By combining software simulation and experimental equipment, the teachers can improve the quality and efficiency of teaching so that they can provide students with creative learning environment.%从分析传统单片机实验室的利弊人手,阐述了为何需要构建虚拟仿真实验室,并提出了利用Proteus软件构建单片机虚拟仿真实验室的框架和构建方案.根据Proteus实验平台的特点,论述了单片机虚拟仿真实验的内容构成及实验方法,通过将软件仿真和实物实验装置相结合的方式,达到提高教学的质量和效率,为学生提供具有创造性学习环境的目的.

  10. BES with FEM: Building Energy Simulation using Finite Element Methods

    OpenAIRE

    Schijndel, van, AWM Jos

    2012-01-01

    An overall objective of energy efficiency in the built environment is to improve building and systems performances in terms of durability, comfort and economics. In order to predict, improve and meet a certain set of performance requirements related to the indoor climate of buildings and the associated energy demand, building energy simulation (BES) tools are indispensable. Due to the rapid development of FEM software and the Multiphysics approaches, it should possible to build and simulate f...

  11. BES with FEM: Building Energy Simulation using Finite Element Methods

    OpenAIRE

    van Schijndel, A. W. M.

    2016-01-01

    An overall objective of energy efficiency in the built environment is to improve building and systems performances in terms of durability, comfort and economics. In order to predict, improve and meet a certain set of performance requirements related to the indoor climate of buildings and the associated energy demand, building energy simulation (BES) tools are indispensable. Due to the rapid development of FEM software and the Multiphysics approaches, it should possible to build and simulate f...

  12. Evolution of CODYRUN from thermal simulation to coupled thermal and daylight simulation software

    OpenAIRE

    Boyer, Harry; Fakra, Ali Hamada; Miranville, Frédéric; Malet-Damour, Bruno; Guichard, Stéphane; Lauret, Philippe

    2014-01-01

    International audience CODYRUN is a multi-zone software integrating thermal building simulation, airflow, and pollutant transfer. Described in numerous publications, this software was originally used forthe passive designof buildings, both for research and teaching purposes.In this context, the data treated were mainly concerned with volumes (zones), surfaces and thicknesses (walls and windows), materials, and systems, with the aim to determine temperatures, heat fluxes,energy consumed, ai...

  13. Simulating Building Fires for Movies

    Science.gov (United States)

    Rodriguez, Ricardo C.; Johnson, Randall P.

    1987-01-01

    Fire scenes for cinematography staged at relatively low cost in method that combines several existing techniques. Nearly realistic scenes, suitable for firefighter training, produced with little specialized equipment. Sequences of scenes set up quickly and easily, without compromising safety because model not burned. Images of fire, steam, and smoke superimposed on image of building to simulate burning of building.

  14. A Team Building Model for Software Engineering Courses Term Projects

    Science.gov (United States)

    Sahin, Yasar Guneri

    2011-01-01

    This paper proposes a new model for team building, which enables teachers to build coherent teams rapidly and fairly for the term projects of software engineering courses. Moreover, the model can also be used to build teams for any type of project, if the team member candidates are students, or if they are inexperienced on a certain subject. The…

  15. Building America House Simulation Protocols

    Energy Technology Data Exchange (ETDEWEB)

    Hendron, Robert [National Renewable Energy Lab. (NREL), Golden, CO (United States); Engebrecht, Cheryn [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2010-09-01

    The House Simulation Protocol document was developed to track and manage progress toward Building America's multi-year, average whole-building energy reduction research goals for new construction and existing homes, using a consistent analytical reference point. This report summarizes the guidelines for developing and reporting these analytical results in a consistent and meaningful manner for all home energy uses using standard operating conditions.

  16. Software for Engineering Simulations of a Spacecraft

    Science.gov (United States)

    Shireman, Kirk; McSwain, Gene; McCormick, Bernell; Fardelos, Panayiotis

    2005-01-01

    Spacecraft Engineering Simulation II (SES II) is a C-language computer program for simulating diverse aspects of operation of a spacecraft characterized by either three or six degrees of freedom. A functional model in SES can include a trajectory flight plan; a submodel of a flight computer running navigational and flight-control software; and submodels of the environment, the dynamics of the spacecraft, and sensor inputs and outputs. SES II features a modular, object-oriented programming style. SES II supports event-based simulations, which, in turn, create an easily adaptable simulation environment in which many different types of trajectories can be simulated by use of the same software. The simulation output consists largely of flight data. SES II can be used to perform optimization and Monte Carlo dispersion simulations. It can also be used to perform simulations for multiple spacecraft. In addition to its generic simulation capabilities, SES offers special capabilities for space-shuttle simulations: for this purpose, it incorporates submodels of the space-shuttle dynamics and a C-language version of the guidance, navigation, and control components of the space-shuttle flight software.

  17. HAM-Tools – a whole building simulation tool in Annex 41

    DEFF Research Database (Denmark)

    Kalagasidis, Angela Sasic; Rode, Carsten; Woloszyn, Monika

    2008-01-01

    HAM-Tools is a building simulation software. The main task of this tool is to simulate transfer processes related to building physics, i.e. heat, air and moisture transport in buildings and building components in operating conditions. The scope of the ECBCS Annex 41 “Whole Building Heat, Air and ...

  18. Composing simulations using persistent software components

    Energy Technology Data Exchange (ETDEWEB)

    Holland, J.V.; Michelsen, R.E.; Powell, D.R.; Upton, S.C.; Thompson, D.R.

    1999-03-01

    The traditional process for developing large-scale simulations is cumbersome, time consuming, costly, and in some cases, inadequate. The topics of software components and component-based software engineering are being explored by software professionals in academic and industrial settings. A component is a well-delineated, relatively independent, and replaceable part of a software system that performs a specific function. Many researchers have addressed the potential to derive a component-based approach to simulations in general, and a few have focused on military simulations in particular. In a component-based approach, functional or logical blocks of the simulation entities are represented as coherent collections of components satisfying explicitly defined interface requirements. A simulation is a top-level aggregate comprised of a collection of components that interact with each other in the context of a simulated environment. A component may represent a simulation artifact, an agent, or any entity that can generated events affecting itself, other simulated entities, or the state of the system. The component-based approach promotes code reuse, contributes to reducing time spent validating or verifying models, and promises to reduce the cost of development while still delivering tailored simulations specific to analysis questions. The Integrated Virtual Environment for Simulation (IVES) is a composition-centered framework to achieve this potential. IVES is a Java implementation of simulation composition concepts developed at Los Alamos National Laboratory for use in several application domains. In this paper, its use in the military domain is demonstrated via the simulation of dismounted infantry in an urban environment.

  19. Software for Simulation of Hyperspectral Images

    Science.gov (United States)

    Richtsmeier, Steven C.; Singer-Berk, Alexander; Bernstein, Lawrence S.

    2002-01-01

    A package of software generates simulated hyperspectral images for use in validating algorithms that generate estimates of Earth-surface spectral reflectance from hyperspectral images acquired by airborne and spaceborne instruments. This software is based on a direct simulation Monte Carlo approach for modeling three-dimensional atmospheric radiative transport as well as surfaces characterized by spatially inhomogeneous bidirectional reflectance distribution functions. In this approach, 'ground truth' is accurately known through input specification of surface and atmospheric properties, and it is practical to consider wide variations of these properties. The software can treat both land and ocean surfaces and the effects of finite clouds with surface shadowing. The spectral/spatial data cubes computed by use of this software can serve both as a substitute for and a supplement to field validation data.

  20. Assessing multizone airflow simulation software

    Energy Technology Data Exchange (ETDEWEB)

    Lorenzetti, D.M.

    2002-01-01

    Several standard multizone modeling programs, in order to improve their computational efficiency, make a number of simplifying assumptions. This paper examines how those assumptions reduce the solution times and memory use of the programs, but at the cost of restricting the models they can express. Applications where these restrictions may adversely affect the program's usefulness include: (1) natural ventilation, when buoyancy effects dominate mechanically-driven flow; (2) duct system design, when losses in T-junctions affect the system performance; and (3) control system design, when the dynamic transport of pollutants plays a significant role in the simulated system.

  1. Functional Testing Protocols for Commercial Building Efficiency Baseline Modeling Software

    Energy Technology Data Exchange (ETDEWEB)

    Jump, David; Price, Phillip N.; Granderson, Jessica; Sohn, Michael

    2013-09-06

    This document describes procedures for testing and validating proprietary baseline energy modeling software accuracy in predicting energy use over the period of interest, such as a month or a year. The procedures are designed according to the methodology used for public domain baselining software in another LBNL report that was (like the present report) prepared for Pacific Gas and Electric Company: ?Commercial Building Energy Baseline Modeling Software: Performance Metrics and Method Testing with Open Source Models and Implications for Proprietary Software Testing Protocols? (referred to here as the ?Model Analysis Report?). The test procedure focuses on the quality of the software?s predictions rather than on the specific algorithms used to predict energy use. In this way the software vendor is not required to divulge or share proprietary information about how their software works, while enabling stakeholders to assess its performance.

  2. [Building an educational software about the auscultation of breathing sounds].

    Science.gov (United States)

    Melo, Francisca Nellie de Paula; Damasceno, Marta Maria Coelho

    2006-12-01

    The aim of this study was to discuss the experience of building an educational software about the auscultation of breathing sounds. In the process, Lev Semenovic Vygotsky's pedagogic theoretical framework was used, and the content was delimited so as to encompass the auscultation method step by step. The objective of the auscultation was to classify normal and strange sounds and their particular stethoacoustic characteristics. For the development of the system was used 3D technology, including virtual personification of the patients, nurses and objects. A virtual environment for the auscultation using simulation procedures was used as well. It was concluded that initiatives such as that, although facing many difficulties, bring important contributions to teaching-learning of contents related to nursing education.

  3. [Building an educational software about the auscultation of breathing sounds].

    Science.gov (United States)

    Melo, Francisca Nellie de Paula; Damasceno, Marta Maria Coelho

    2006-12-01

    The aim of this study was to discuss the experience of building an educational software about the auscultation of breathing sounds. In the process, Lev Semenovic Vygotsky's pedagogic theoretical framework was used, and the content was delimited so as to encompass the auscultation method step by step. The objective of the auscultation was to classify normal and strange sounds and their particular stethoacoustic characteristics. For the development of the system was used 3D technology, including virtual personification of the patients, nurses and objects. A virtual environment for the auscultation using simulation procedures was used as well. It was concluded that initiatives such as that, although facing many difficulties, bring important contributions to teaching-learning of contents related to nursing education. PMID:17310574

  4. Software and Physics Simulation at Belle II

    CERN Document Server

    Kim, Doris Yangsoo

    2015-01-01

    The Belle II experiment at the SuperKEKB collider in Tsukuba, Japan, will start physics data taking in 2018. It is planned to accumulate an e+ e- collision data set of 50 /ab, about 50 times larger than that of the earlier Belle experiment. The software library for the new detector will use GEANT4 for Monte Carlo simulation and is an entirely new software and reconstruction system based on modern computing tools. Examples of physics simulation including beam background overlays will be described.

  5. Detector description software for simulation, reconstruction and visualisation

    International Nuclear Information System (INIS)

    The author describes a software that reads the detector description from tag-based ASCII files and builds an independent detector representation (its only dependency being the CLHEP library) in transient mode. A second package uses this transient representation to build automatically a GEANT4 representation of the detector geometry and materials. The software supports any kind of element and material, including material mixtures built by giving the weight fractions, the volume fractions or the number of atoms of each component. The common solid shapes (box, cube, cone, sphere, polycone, polyhedra, ..) can be used, as well as solids made from a boolean operation of another solids (addition, substraction and intersection). The geometry volumes can be placed through simple positioning or positioning several copies following a given formula, so that each copy can have different position and rotation. Also division of a volume along one of its axis is supported for the basic solid shapes. The Simulation, Reconstruction and Visualisation (ROOT based) software contain no detector data. Instead, this data is always accessed through a unique interface to the GEANT4 detector representation package, which manages the complicated parameterized positioning and divisions and returns GEANT4 independent objects. Both packages have been built following strict Software Engineering practices. The software has been used for the detector description of the PS214 (HARP) experiment at CERN, which is taking data since april 2001. With minor modifications it is also been used for the GEANT4 simulation of the CMS experiment

  6. A Way to Build Software Culture: Distributed Object-Oriented Software Engineering over Internet

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    This paper focuses on Distributed Object-Oriented SoftwareEngineerin g over Internet, which is a way to build software culture. We believe that our w ork will contribute to better understanding of how to meet the needs of the big potential software market and to promote the software industry in developing cou ntry. The United States and Western Europe have well-established software indu s try and related civilization. Software science, technology, and engineering are needed in China; however, maybe what is needed, first of all, is software civil ization, including software ideas, customs, skills, arts, etc. We will draw a f ramework for the software culture as following: Software is the most important c ommodity in this age; Brilliance of hardware component era has become past fact; A software component era is ahead; Traditional linear process model is obsolete ; Modern software engineering has a new face, object evolution model; Distribute d object-oriented software engineering over Internet is an approach to software component era; and Complete software civilization will be formed all over the wo rld in next century.

  7. Simulator for Software Project Reliability Estimation

    Directory of Open Access Journals (Sweden)

    Sanjana,

    2011-07-01

    Full Text Available Several models are there for software development processes, each describing approaches to a variety of tasks or activities that take place during the process. Without project management, softwareprojects can easily be delivered late or over budget. With large numbers of software projects not meeting their expectations in terms of functionality, cost, or delivery schedule, effective project management appears to be lacking.IEEE defines reliability as “the ability of a system to perform its required function under stated conditions for a specified period of time. To most software project managers, reliability is equated to correctness that is number of bugs found and fixed. The purpose is to develop a simulator forestimating the reliability of the software project using PERT approach keeping in view the criticality index of each task.

  8. Partial volume simulation in software breast phantoms

    Science.gov (United States)

    Chen, Feiyu; Pokrajac, David; Shi, Xiquan; Liu, Fengshan; Maidment, Andrew D. A.; Bakic, Predrag R.

    2012-03-01

    A modification to our previous simulation of breast anatomy is proposed, in order to improve the quality of simulated projections generated using software breast phantoms. Anthropomorphic software breast phantoms have been used for quantitative validation of breast imaging systems. Previously, we developed a novel algorithm for breast anatomy simulation, which did not account for the partial volume (PV) of various tissues in a voxel; instead, each phantom voxel was assumed to contain single tissue type. As a result, phantom projection images displayed notable artifacts near the borders between regions of different materials, particularly at the skin-air boundary. These artifacts diminished the realism of phantom images. One solution is to simulate smaller voxels. Reducing voxel size, however, extends the phantom generation time and increases memory requirements. We achieved an improvement in image quality without reducing voxel size by the simulation of PV in voxels containing more than one simulated tissue type. The linear x-ray attenuation coefficient of each voxel is calculated by combining attenuation coefficients proportional to the voxel subvolumes occupied by the various tissues. A local planar approximation of the boundary surface is employed, and the skin volume in each voxel is computed by decomposition into simple geometric shapes. An efficient encoding scheme is proposed for the type and proportion of simulated tissues in each voxel. We illustrate the proposed methodology on phantom slices and simulated mammographic projections. Our results show that the PV simulation has improved image quality by reducing quantization artifacts.

  9. An Agent Based Software Approach towards Building Complex Systems

    Directory of Open Access Journals (Sweden)

    Latika Kharb

    2015-08-01

    Full Text Available Agent-oriented techniques represent an exciting new means of analyzing, designing and building complex software systems. They have the potential to significantly improve current practice in software engineering and to extend the range of applications that can feasibly be tackled. Yet, to date, there have been few serious attempts to cast agent systems as a software engineering paradigm. This paper seeks to rectify this omission. Specifically, points to be argued include:firstly, the conceptual apparatus of agent-oriented systems is well-suited to building software solutions for complex systems and secondly, agent-oriented approaches represent a genuine advance over the current state of the art for engineering complex systems. Following on from this view, the major issues raised by adopting an agentoriented approach to software engineering are highlighted and discussed in this paper.

  10. The Implementation of Industry Foundation Classes in Simulation Tools for the Building Industry

    Energy Technology Data Exchange (ETDEWEB)

    Bazjanac, Vladimir; Crawley, Drury B.

    1997-06-01

    Industry Foundation Classes (IFC) provide an environment of interoperability among IFC-compliant software applications in the architecture, engineering, construction, and facilities management (AEC/FM) industry. They allow building simulation software to automatically acquire building geometry and other building data from project models created with IFC compliant CAD software. They also facilitate direct exchange of input and output data with other simulation software. This paper discusses how simulation software can be made compliant with version 1.5 of the IFC. It also describes the immediate plans for expansion of IFC and the process of definition and addition of new classes to the model.

  11. Astropy: Building Blocks for Astronomy Software

    Science.gov (United States)

    Bray, E. M.

    2014-05-01

    The Astropy Project is a community effort to develop an open source Python package of common data structures and routines for use by other, more specialized astronomy software in order to foster interoperability. The project encompasses the “core” astropy Python package, “affiliated packages” that strive to implement Astropy's coding standards and interoperability with other affiliated packages, and a broader community aimed at implementing Pythonic solutions to astronomy computing problems while minimizing duplication of effort. The project also provides a template for other projects that use Astropy to reuse much of Astropy's development framework without reinventing the wheel. Here we present an overview of the key features of the core package (existing and upcoming), current and planned affiliated packages, and how we manage a large open source project with a diverse community of contributors.

  12. Co-Simulation of Building Energy and Control Systems with the Building Controls Virtual Test Bed

    Energy Technology Data Exchange (ETDEWEB)

    Wetter, Michael

    2010-08-22

    This article describes the implementation of the Building Controls Virtual Test Bed (BCVTB). The BCVTB is a software environment that allows connecting different simulation programs to exchange data during the time integration, and that allows conducting hardware in the loop simulation. The software architecture is a modular design based on Ptolemy II, a software environment for design and analysis of heterogeneous systems. Ptolemy II provides a graphical model building environment, synchronizes the exchanged data and visualizes the system evolution during run-time. The BCVTB provides additions to Ptolemy II that allow the run-time coupling of different simulation programs for data exchange, including EnergyPlus, MATLAB, Simulink and the Modelica modelling and simulation environment Dymola. The additions also allow executing system commands, such as a script that executes a Radiance simulation. In this article, the software architecture is presented and the mathematical model used to implement the co-simulation is discussed. The simulation program interface that the BCVTB provides is explained. The article concludes by presenting applications in which different state of the art simulation programs are linked for run-time data exchange. This link allows the use of the simulation program that is best suited for the particular problem to model building heat transfer, HVAC system dynamics and control algorithms, and to compute a solution to the coupled problem using co-simulation.

  13. A Simulation Model for the Waterfall Software Development Life Cycle

    CERN Document Server

    Bassil, Youssef

    2012-01-01

    Software development life cycle or SDLC for short is a methodology for designing, building, and maintaining information and industrial systems. So far, there exist many SDLC models, one of which is the Waterfall model which comprises five phases to be completed sequentially in order to develop a software solution. However, SDLC of software systems has always encountered problems and limitations that resulted in significant budget overruns, late or suspended deliveries, and dissatisfied clients. The major reason for these deficiencies is that project directors are not wisely assigning the required number of workers and resources on the various activities of the SDLC. Consequently, some SDLC phases with insufficient resources may be delayed; while, others with excess resources may be idled, leading to a bottleneck between the arrival and delivery of projects and to a failure in delivering an operational product on time and within budget. This paper proposes a simulation model for the Waterfall development proce...

  14. Building Reusable Software Component For Optimization Check in ABAP Coding

    Directory of Open Access Journals (Sweden)

    P.Shireesha

    2010-07-01

    Full Text Available Software component reuse is the software engineering practice of developing newsoftware products from existing components. A reuse library or component reuserepository organizes stores and manages reusable components. This paper describeshow a reusable component is created, how it reuses the function and checking ifoptimized code is being used in building programs and applications. Finally providingcoding guidelines, standards and best practices used for creating reusable componentsand guidelines and best practices for making configurable and easy to use.

  15. Simulation Modeling of Software Development Processes

    Science.gov (United States)

    Calavaro, G. F.; Basili, V. R.; Iazeolla, G.

    1996-01-01

    A simulation modeling approach is proposed for the prediction of software process productivity indices, such as cost and time-to-market, and the sensitivity analysis of such indices to changes in the organization parameters and user requirements. The approach uses a timed Petri Net and Object Oriented top-down model specification. Results demonstrate the model representativeness, and its usefulness in verifying process conformance to expectations, and in performing continuous process improvement and optimization.

  16. A general software reliability process simulation technique

    Science.gov (United States)

    Tausworthe, Robert C.

    1991-01-01

    The structure and rationale of the generalized software reliability process, together with the design and implementation of a computer program that simulates this process are described. Given assumed parameters of a particular project, the users of this program are able to generate simulated status timelines of work products, numbers of injected anomalies, and the progress of testing, fault isolation, repair, validation, and retest. Such timelines are useful in comparison with actual timeline data, for validating the project input parameters, and for providing data for researchers in reliability prediction modeling.

  17. Software Framework for Advanced Power Plant Simulations

    Energy Technology Data Exchange (ETDEWEB)

    John Widmann; Sorin Munteanu; Aseem Jain; Pankaj Gupta; Mark Moales; Erik Ferguson; Lewis Collins; David Sloan; Woodrow Fiveland; Yi-dong Lang; Larry Biegler; Michael Locke; Simon Lingard; Jay Yun

    2010-08-01

    This report summarizes the work accomplished during the Phase II development effort of the Advanced Process Engineering Co-Simulator (APECS). The objective of the project is to develop the tools to efficiently combine high-fidelity computational fluid dynamics (CFD) models with process modeling software. During the course of the project, a robust integration controller was developed that can be used in any CAPE-OPEN compliant process modeling environment. The controller mediates the exchange of information between the process modeling software and the CFD software. Several approaches to reducing the time disparity between CFD simulations and process modeling have been investigated and implemented. These include enabling the CFD models to be run on a remote cluster and enabling multiple CFD models to be run simultaneously. Furthermore, computationally fast reduced-order models (ROMs) have been developed that can be 'trained' using the results from CFD simulations and then used directly within flowsheets. Unit operation models (both CFD and ROMs) can be uploaded to a model database and shared between multiple users.

  18. Software Security and the "Building Security in Maturity" Model

    CERN Document Server

    CERN. Geneva

    2011-01-01

    Using the framework described in my book "Software Security: Building Security In" I will discuss and describe the state of the practice in software security. This talk is peppered with real data from the field, based on my work with several large companies as a Cigital consultant. As a discipline, software security has made great progress over the last decade. Of the sixty large-scale software security initiatives we are aware of, thirty-two---all household names---are currently included in the BSIMM study. Those companies among the thirty-two who graciously agreed to be identified include: Adobe, Aon, Bank of America, Capital One, The Depository Trust & Clearing Corporation (DTCC), EMC, Google, Intel, Intuit, McKesson, Microsoft, Nokia, QUALCOMM, Sallie Mae, Standard Life, SWIFT, Symantec, Telecom Italia, Thomson Reuters, VMware, and Wells Fargo. The BSIMM was created by observing and analyzing real-world data from thirty-two leading software security initiatives. The BSIMM can...

  19. Perspectives in Simulation Hardware and Software Architecture

    Directory of Open Access Journals (Sweden)

    W.O. Grierson

    1985-10-01

    Full Text Available Historically, analog and hybrid computer systems have provided effective real-time solutions for the simulation of large dynamic systems. In the mid 1970s, ADI concluded that these systems were no longer adequate to meet the demands of larger, more complex models and the demand for greater simulation accuracy. The decision was to design an all-digital system to satisfy these growing requirements (see Gilbert and Howe, (1978. This all-digital approach was called the SYSTEM 10. The SYSTEM 10 has been effective in solving time-critical simulation problems and in replacing the previous approach of utilizing hybrid computers. Recent advances in 100 K emitter coupled logic (ECL now make it possible to support a new generation of equipment that expands modeling capabilities to serve simulation needs. The hardware and software concepts of this system, called the SYSTEM 100, are the subject of this paper.

  20. Integrating CFD and building simulation

    DEFF Research Database (Denmark)

    Bartak, M.; Beausoleil-Morrison, I.; Clarke, J.A.;

    2002-01-01

    To provide practitioners with the means to tackle problems related to poor indoor environments, building simulation and computational 3uid dynamics can usefully be integrated within a single computational framework. This paper describes the outcomes from a research project sponsored by the European...... Commission, which furthered the CFD modelling aspects of the ESP-r system. The paper summarises the form of the CFD model, describes the method used to integrate the thermal and 3ow domains and reports the outcome from an empirical validation exercise. © 2002 Published by Elsevier Science Ltd....

  1. Validation of daylighting model in CODYRUN building simulation code

    OpenAIRE

    Boyer, Harry; Boyer, H.; Guichard, Stéphane; Guichard, S; Jean, Aurélien; Jean, A.; Libelle, Teddy; Libelle, T; Bigot, Dimitri; Miranville, F; Miranville, Frédéric; Bojić, M.

    2015-01-01

    International audience CODYRUN is a multi-zone software integrating thermal building simulation, airflow, and pollutant transfer. A first question thus arose as to the integration of indoor lighting conditions into the simulation, leading to a new model calculating natural and artificial lighting. The results of this new daylighting module were then compared with results of other simulation codes and experimental cases both in artificial and natural environments. Excellent agreements were ...

  2. Lean Development with the Morpheus Simulation Software

    Science.gov (United States)

    Brogley, Aaron C.

    2013-01-01

    The Morpheus project is an autonomous robotic testbed currently in development at NASA's Johnson Space Center (JSC) with support from other centers. Its primary objectives are to test new 'green' fuel propulsion systems and to demonstrate the capability of the Autonomous Lander Hazard Avoidance Technology (ALHAT) sensor, provided by the Jet Propulsion Laboratory (JPL) on a lunar landing trajectory. If successful, these technologies and lessons learned from the Morpheus testing cycle may be incorporated into a landing descent vehicle used on the moon, an asteroid, or Mars. In an effort to reduce development costs and cycle time, the project employs lean development engineering practices in its development of flight and simulation software. The Morpheus simulation makes use of existing software packages where possible to reduce the development time. The development and testing of flight software occurs primarily through the frequent test operation of the vehicle and incrementally increasing the scope of the test. With rapid development cycles, risk of loss of the vehicle and loss of the mission are possible, but efficient progress in development would not be possible without that risk.

  3. Analysis of Indoor Thermal Performance of Solar Buildings and Simulation Software Development%太阳能建筑室内热工性能分析与模拟软件开发

    Institute of Scientific and Technical Information of China (English)

    敖永安; 车丹; 彭亮; 张茜; 李玉雯

    2013-01-01

    According to the solar building characteristics,we established simulation analysis software suitable for solar building indoor thermal performance; analysed the impact of solar energy applied in the building on indoor temperature and load; and provided reference data for the design of the solar building heating and cooling systems. Based on VB visual programming language, using the method of " ADO data control + SQL statement" and through the ODBC connected with database interface, established the national climate database; databases of different wall types, window types, and radiation floor materials in different regions, etc. The program refers to the outer - wall temperature heat transfer calculation method to calculate the indoor cold (heat) load, and the parametric thought that uses APDL( ANSYS parametric design language) to realize the visualization parametric modeling of floor for heat transfer calculation. Then we got the results: for example, on 1 st January in Shenyang, with only solar energy floor heating in practical building conditions, the standard indoor design temperature, 18℃ ,can not be reached;and the amount of auxiliary heat for the water supply temperature controlled at 40℃ is greater than the amount for that uncontrolled when we use solar energy for heating only. This software could calculate thermal parameters of rooms in different locations.different time and different rooms, so it could be used broadly. It also has opened databases and outputs in graphs and tables, so it is easily understood.%目的 针对太阳能建筑自身的特点,编制适用于太阳能建筑的室内热工性能模拟分析软件,分析太阳能在建筑中应用时对室内温度和负荷的影响,为太阳能建筑冷热源系统的设计提供参考.方法 基于Visual Basic可视化程序设计语言,运用“ADO数据控制项+SQL语句”并通过ODBC同数据库接口相连接的方法建立全国气候数据库、适用于不同区域的墙型窗型和

  4. Detector Description Software for Simulation,Reconstruction and Visualisation

    Institute of Scientific and Technical Information of China (English)

    PedroArce

    2001-01-01

    This paper describes a software that reads the detector description from tagbased ASCII files and builds an independent detector representation (its only dependency being the CLHEP library) in transient mode,A second package uses this transient representation to build automatically a GEANT4 representation of the detector geometry and materials.The software supports and kind of element and material,including material mixtures built by giving the weight fractions,the volume fractions of the number of atoms of each component.The common solid shapes(box,cube,cone,sphere,polycone,polyhedra,…)can be used,as well as solids made from a boolean operation of another solids(addition,substraction and intersection),The geometry volumes can be placed through simple positioning or positioning several copies following a given formula,so that each copy can have different position and rotation,Also divisioning of a volume along one of its axis is supported for the basic solid shpaes. The Simulation,Reconstruction and Visualisation(ROOT based)software contain no detector data.Instead,this data is always accesed through a unique interface to the GEANT4 detector representation package,which manages the complicated parameterised positionings and divisions and returns GEANT4 independent objects.Both packages have been built following strict Software Engineering practices,that we also describe in the paper.The software has been used for the detector description of the PS214(HARP) experiment at CERN,which is taking data since april 2001,With minor modifications it is also been used for the GEANT4 simulation of the CMS experiment.

  5. Physics detector simulation facility system software description

    International Nuclear Information System (INIS)

    Large and costly detectors will be constructed during the next few years to study the interactions produced by the SSC. Efficient, cost-effective designs for these detectors will require careful thought and planning. Because it is not possible to test fully a proposed design in a scaled-down version, the adequacy of a proposed design will be determined by a detailed computer model of the detectors. Physics and detector simulations will be performed on the computer model using high-powered computing system at the Physics Detector Simulation Facility (PDSF). The SSCL has particular computing requirements for high-energy physics (HEP) Monte Carlo calculations for the simulation of SSCL physics and detectors. The numerical calculations to be performed in each simulation are lengthy and detailed; they could require many more months per run on a VAX 11/780 computer and may produce several gigabytes of data per run. Consequently, a distributed computing environment of several networked high-speed computing engines is envisioned to meet these needs. These networked computers will form the basis of a centralized facility for SSCL physics and detector simulation work. Our computer planning groups have determined that the most efficient, cost-effective way to provide these high-performance computing resources at this time is with RISC-based UNIX workstations. The modeling and simulation application software that will run on the computing system is usually written by physicists in FORTRAN language and may need thousands of hours of supercomputing time. The system software is the ''glue'' which integrates the distributed workstations and allows them to be managed as a single entity. This report will address the computing strategy for the SSC

  6. A multi-layered software architecture model for building software solutions in an urbanized information system

    Directory of Open Access Journals (Sweden)

    Sana Guetat

    2013-01-01

    Full Text Available The concept of Information Systems urbanization has been proposed since the late 1990’s in order to help organizations building agile information systems. Nevertheless, despite the advantages of this concept, it remains too descriptive and presents many weaknesses. In particular, there is a lack of useful architecture models dedicated to defining software solutions compliant with information systems urbanization principles and rules. Moreover, well-known software architecture models do not provide sufficient resources to address the requirements and constraints of urbanized information systems. In this paper, we draw on the “information city” framework to propose a model of software architecture - called the 5+1 Software Architecture Model - which is compliant with information systems urbanization principles and helps organizations building urbanized software solutions. This framework improves the well-established software architecture models and allows the integration of new architectural paradigms. Furthermore, the proposed model contributes to the implementation of information systems urbanization in several ways. On the one hand, this model devotes a specific layer to applications integration and software reuse. On the other hand, it contributes to the information system agility and scalability due to its conformity to the separation of concerns principle.

  7. Experimental validation of ultrasonic NDE simulation software

    Science.gov (United States)

    Dib, Gerges; Larche, Michael; Diaz, Aaron A.; Crawford, Susan L.; Prowant, Matthew S.; Anderson, Michael T.

    2016-02-01

    Computer modeling and simulation is becoming an essential tool for transducer design and insight into ultrasonic nondestructive evaluation (UT-NDE). As the popularity of simulation tools for UT-NDE increases, it becomes important to assess their reliability to model acoustic responses from defects in operating components and provide information that is consistent with in-field inspection data. This includes information about the detectability of different defect types for a given UT probe. Recently, a cooperative program between the Electrical Power Research Institute and the U.S. Nuclear Regulatory Commission was established to validate numerical modeling software commonly used for simulating UT-NDE of nuclear power plant components. In the first phase of this cooperative, extensive experimental UT measurements were conducted on machined notches with varying depth, length, and orientation in stainless steel plates. Then, the notches were modeled in CIVA, a semi-analytical NDE simulation platform developed by the French Commissariat a l'Energie Atomique, and their responses compared with the experimental measurements. Discrepancies between experimental and simulation results are due to either improper inputs to the simulation model, or to incorrect approximations and assumptions in the numerical models. To address the former, a variation study was conducted on the different parameters that are required as inputs for the model, specifically the specimen and transducer properties. Then, the ability of simulations to give accurate predictions regarding the detectability of the different defects was demonstrated. This includes the results in terms of the variations in defect amplitude indications, and the ratios between tip diffracted and specular signal amplitudes.

  8. Terahertz/mm wave imaging simulation software

    Science.gov (United States)

    Fetterman, M. R.; Dougherty, J.; Kiser, W. L., Jr.

    2006-10-01

    We have developed a mm wave/terahertz imaging simulation package from COTS graphic software and custom MATLAB code. In this scheme, a commercial ray-tracing package was used to simulate the emission and reflections of radiation from scenes incorporating highly realistic imagery. Accurate material properties were assigned to objects in the scenes, with values obtained from the literature, and from our own terahertz spectroscopy measurements. The images were then post-processed with custom Matlab code to include the blur introduced by the imaging system and noise levels arising from system electronics and detector noise. The Matlab code was also used to simulate the effect of fog, an important aspect for mm wave imaging systems. Several types of image scenes were evaluated, including bar targets, contrast detail targets, a person in a portal screening situation, and a sailboat on the open ocean. The images produced by this simulation are currently being used as guidance for a 94 GHz passive mm wave imaging system, but have broad applicability for frequencies extending into the terahertz region.

  9. 某绿色建筑能耗实测数据校验eQUSET建筑能耗模拟软件模型的研究%Measured Data Verification of Energy Consumption in a Green Building for Building Energy Simulation Software eQUEST Model

    Institute of Scientific and Technical Information of China (English)

    郭晏京; 吴祥生; 陈金华; 张小欧

    2014-01-01

    以重庆市某高校三星绿色建筑为例,对其全年实际运行能耗进行分项统计,利用eQUEST建筑能耗模拟软件建立该建筑的能耗模拟模型。逐项比较实测数据与模拟数据,分析产生误差的原因,并使校验过后的模型模拟数据误差达到相关标准要求。通过对所建模型的校验模拟,证明了经过实测数据校验的模型能够对建筑能耗进行更准确的预测。总结了一些校验模型的方法,为后续能耗模拟提供了参考。%According to the subentry statistic of a green building in Chongqing, the building energy consumption simulation model is established by eQUEST software, comparing the measured data and simu-lated data, analyzing the cause of the error, and the checked model simulation data error achieves the re-quirements of relevant standards. Through the verification of the model, data checking model can make more accurate prediction on the energy consumption of buildings. Some methods for checking model are summarized as reference for subsequent energy simulation.

  10. PUS Services Software Building Block Automatic Generation for Space Missions

    Science.gov (United States)

    Candia, S.; Sgaramella, F.; Mele, G.

    2008-08-01

    The Packet Utilization Standard (PUS) has been specified by the European Committee for Space Standardization (ECSS) and issued as ECSS-E-70-41A to define the application-level interface between Ground Segments and Space Segments. The ECSS-E- 70-41A complements the ECSS-E-50 and the Consultative Committee for Space Data Systems (CCSDS) recommendations for packet telemetry and telecommand. The ECSS-E-70-41A characterizes the identified PUS Services from a functional point of view and the ECSS-E-70-31 standard specifies the rules for their mission-specific tailoring. The current on-board software design for a space mission implies the production of several PUS terminals, each providing a specific tailoring of the PUS services. The associated on-board software building blocks are developed independently, leading to very different design choices and implementations even when the mission tailoring requires very similar services (from the Ground operative perspective). In this scenario, the automatic production of the PUS services building blocks for a mission would be a way to optimize the overall mission economy and improve the robusteness and reliability of the on-board software and of the Ground-Space interactions. This paper presents the Space Software Italia (SSI) activities for the development of an integrated environment to support: the PUS services tailoring activity for a specific mission. the mission-specific PUS services configuration. the generation the UML model of the software building block implementing the mission-specific PUS services and the related source code, support documentation (software requirements, software architecture, test plans/procedures, operational manuals), and the TM/TC database. The paper deals with: (a) the project objectives, (b) the tailoring, configuration, and generation process, (c) the description of the environments supporting the process phases, (d) the characterization of the meta-model used for the generation, (e) the

  11. Hardware-Software Co-Simulation for SOC Functional Verification

    Institute of Scientific and Technical Information of China (English)

    YAN Ying-jian; LIU Ming-ye

    2005-01-01

    A hardware-software co-simulation method for system on chip (SOC) design is discussed. It is based on an instruction set simulator (ISS) and an event-driven hardware simulator, and a bus interface model that is described in C language provides the interface between the two. The bus interface model and the ISS are linked into a singleton program the software simulator, which communicate with the hardware simulator through Windows sockets. The implementation of the bus interface model and the synchronization between hardware and software simulator are discussed in detail. Co-simulation control of the hardware simulator is also discussed.

  12. Structured building model reduction toward parallel simulation

    Energy Technology Data Exchange (ETDEWEB)

    Dobbs, Justin R. [Cornell University; Hencey, Brondon M. [Cornell University

    2013-08-26

    Building energy model reduction exchanges accuracy for improved simulation speed by reducing the number of dynamical equations. Parallel computing aims to improve simulation times without loss of accuracy but is poorly utilized by contemporary simulators and is inherently limited by inter-processor communication. This paper bridges these disparate techniques to implement efficient parallel building thermal simulation. We begin with a survey of three structured reduction approaches that compares their performance to a leading unstructured method. We then use structured model reduction to find thermal clusters in the building energy model and allocate processing resources. Experimental results demonstrate faster simulation and low error without any interprocessor communication.

  13. Software Simulates Sight: Flat Panel Mura Detection

    Science.gov (United States)

    2008-01-01

    In the increasingly sophisticated world of high-definition flat screen monitors and television screens, image clarity and the elimination of distortion are paramount concerns. As the devices that reproduce images become more and more sophisticated, so do the technologies that verify their accuracy. By simulating the manner in which a human eye perceives and interprets a visual stimulus, NASA scientists have found ways to automatically and accurately test new monitors and displays. The Spatial Standard Observer (SSO) software metric, developed by Dr. Andrew B. Watson at Ames Research Center, measures visibility and defects in screens, displays, and interfaces. In the design of such a software tool, a central challenge is determining which aspects of visual function to include while accuracy and generality are important, relative simplicity of the software module is also a key virtue. Based on data collected in ModelFest, a large cooperative multi-lab project hosted by the Optical Society of America, the SSO simulates a simplified model of human spatial vision, operating on a pair of images that are viewed at a specific viewing distance with pixels having a known relation to luminance. The SSO measures the visibility of foveal spatial patterns, or the discriminability of two patterns, by incorporating only a few essential components of vision. These components include local contrast transformation, a contrast sensitivity function, local masking, and local pooling. By this construction, the SSO provides output in units of "just noticeable differences" (JND) a unit of measure based on the assumed smallest difference of sensory input detectable by a human being. Herein is the truly amazing ability of the SSO, while conventional methods can manipulate images, the SSO models human perception. This set of equations actually defines a mathematical way of working with an image that accurately reflects the way in which the human eye and mind behold a stimulus. The SSO is

  14. Integrating software architectures for distributed simulations and simulation analysis communities.

    Energy Technology Data Exchange (ETDEWEB)

    Goldsby, Michael E.; Fellig, Daniel; Linebarger, John Michael; Moore, Patrick Curtis; Sa, Timothy J.; Hawley, Marilyn F.

    2005-10-01

    The one-year Software Architecture LDRD (No.79819) was a cross-site effort between Sandia California and Sandia New Mexico. The purpose of this research was to further develop and demonstrate integrating software architecture frameworks for distributed simulation and distributed collaboration in the homeland security domain. The integrated frameworks were initially developed through the Weapons of Mass Destruction Decision Analysis Center (WMD-DAC), sited at SNL/CA, and the National Infrastructure Simulation & Analysis Center (NISAC), sited at SNL/NM. The primary deliverable was a demonstration of both a federation of distributed simulations and a federation of distributed collaborative simulation analysis communities in the context of the same integrated scenario, which was the release of smallpox in San Diego, California. To our knowledge this was the first time such a combination of federations under a single scenario has ever been demonstrated. A secondary deliverable was the creation of the standalone GroupMeld{trademark} collaboration client, which uses the GroupMeld{trademark} synchronous collaboration framework. In addition, a small pilot experiment that used both integrating frameworks allowed a greater range of crisis management options to be performed and evaluated than would have been possible without the use of the frameworks.

  15. Building Interactive Simulations in Web Pages without Programming.

    Science.gov (United States)

    Mailen Kootsey, J; McAuley, Grant; Bernal, Julie

    2005-01-01

    A software system is described for building interactive simulations and other numerical calculations in Web pages. The system is based on a new Java-based software architecture named NumberLinX (NLX) that isolates each function required to build the simulation so that a library of reusable objects could be assembled. The NLX objects are integrated into a commercial Web design program for coding-free page construction. The model description is entered through a wizard-like utility program that also functions as a model editor. The complete system permits very rapid construction of interactive simulations without coding. A wide range of applications are possible with the system beyond interactive calculations, including remote data collection and processing and collaboration over a network. PMID:17282319

  16. Using Expert Systems To Build Cognitive Simulations.

    Science.gov (United States)

    Jonassen, David H.; Wang, Sherwood

    2003-01-01

    Cognitive simulations are runnable computer programs for modeling human cognitive activities. A case study is reported where expert systems were used as a formalism for modeling metacognitive processes in a seminar. Building cognitive simulations engages intensive introspection, ownership and meaning making in learners who build them. (Author/AEF)

  17. Software Tools for Stochastic Simulations of Turbulence

    Science.gov (United States)

    Kaufman, Ryan

    We present two software tools useful for the analysis of mesh based physics application data, and specifically for turbulent mixing simulations. Each has a broader, but separate scope, as we describe. Both features play a key role as we push computational science to its limits and thus the present work contributes to the frontier of research. The first tool is Wstar, a weak* comparison tool, which addresses the stochastic nature of turbulent flow. The goal is to compare underresolved turbulent data in convergence, parameter dependence, or validation studies. This is achieved by separating space-time data from state data (e.g. density, pressure, momentum, etc.) through coarsening and sampling. The collection of fine grained data in a single coarse cell is treated as a random sample in state space, whose cumulative distribution function defines a measure within that cell. This set of measures with the spacial dependence defined by the coarse grid defines a Young measure solution to the PDE. The second tool is a front tracking application programming interface (API) called FTI. It has the capability to generate geometric surfaces (e.g. the location of interspecies boundaries) of high complexity, and track them dynamically. FTI also includes the ghost fluid method, which enables mesh based fluid codes to maintain sharpness at interspecies boundaries by modifying solution stencils that cross such a boundary. FTI outlines and standardizes the methods involved in this model. FronTier, as developed here, is a software package which implements this standard. The client must implement the physics and grid interpolation routines outlined in the client interface to FTI. Specific client programs using this interface include the weather forecasting code WRF; the high energy physics code, FLASH; and two locally constructed fluid codes, cFluid and iFluid for compressible and incompressible flow respectively.

  18. Avionics Simulation, Development and Software Engineering

    Science.gov (United States)

    2002-01-01

    During this reporting period, all technical responsibilities were accomplished as planned. A close working relationship was maintained with personnel of the MSFC Avionics Department Software Group (ED14), the MSFC EXPRESS Project Office (FD31), and the Huntsville Boeing Company. Accomplishments included: performing special tasks; supporting Software Review Board (SRB), Avionics Test Bed (ATB), and EXPRESS Software Control Panel (ESCP) activities; participating in technical meetings; and coordinating issues between the Boeing Company and the MSFC Project Office.

  19. Software augmented buildings: Exploiting existing infrastructure to improve energy efficiency and comfort in commercial buildings

    Science.gov (United States)

    Balaji, Bharathan

    Commercial buildings consume 19% of energy in the US as of 2010, and traditionally, their energy use has been optimized through improved equipment efficiency and retrofits. Beyond improved hardware and infrastructure, there exists a tremendous potential in reducing energy use through better monitoring and operation. We present several applications that we developed and deployed to support our thesis that building energy use can be reduced through sensing, monitoring and optimization software that modulates use of building subsystems including HVAC. We focus on HVAC systems as these constitute 48-55% of building energy use. Specifically, in case of sensing, we describe an energy apportionment system that enables us to estimate real-time zonal HVAC power consumption by analyzing existing sensor information. With this energy breakdown, we can measure effectiveness of optimization solutions and identify inefficiencies. Central to energy efficiency improvement is determination of human occupancy in buildings. But this information is often unavailable or expensive to obtain using wide scale sensor deployment. We present our system that infers room level occupancy inexpensively by leveraging existing WiFi infrastructure. Occupancy information can be used not only to directly control HVAC but also to infer state of the building for predictive control. Building energy use is strongly influenced by human behaviors, and timely feedback mechanisms can encourage energy saving behavior. Occupants interact with HVAC using thermostats which has shown to be inadequate for thermal comfort. Building managers are responsible for incorporating energy efficiency measures, but our interviews reveal that they struggle to maintain efficiency due to lack of analytical tools and contextual information. We present our software services that provide energy feedback to occupants and building managers, improves comfort with personalized control and identifies energy wasting faults. For wide

  20. Software for the international linear collider: Simulation and reconstruction frameworks

    Indian Academy of Sciences (India)

    Ties Behnke; Frank Gaede; DESY Hamburg

    2007-12-01

    Software plays an increasingly important role already in the early stages of a large project like the ILC. In international collaboration a data format for the ILC detector and physics studies has been developed. Building upon this software frameworks are made available which ease the event reconstruction and analysis.

  1. Spacecraft Trajectory Analysis and Mission Planning Simulation (STAMPS) Software

    Science.gov (United States)

    Puckett, Nancy; Pettinger, Kris; Hallstrom,John; Brownfield, Dana; Blinn, Eric; Williams, Frank; Wiuff, Kelli; McCarty, Steve; Ramirez, Daniel; Lamotte, Nicole; Vu, Tuan

    2014-01-01

    STAMPS simulates either three- or six-degree-of-freedom cases for all spacecraft flight phases using translated HAL flight software or generic GN&C models. Single or multiple trajectories can be simulated for use in optimization and dispersion analysis. It includes math models for the vehicle and environment, and currently features a "C" version of shuttle onboard flight software. The STAMPS software is used for mission planning and analysis within ascent/descent, rendezvous, proximity operations, and navigation flight design areas.

  2. Collapse simulation of building constructions

    Directory of Open Access Journals (Sweden)

    Nekrest'yanov Viktor Nikolaevich

    Full Text Available The physical reasons for building structures destruction are both the forces arising at stress-strain state of construction elements and external influences arising at emergency situations, as well as their moments, impulses and periodic impulses with the frequencies close to of fluctuations frequencies of construction elements. We shall call the mathematical calculation models for the parameters-reasons of destructions the basic models. The basic models of destruction of building structures elements allow not only providing necessary level of reliability and survivability of the elements and the construction as a whole already at the stage of their design, but also giving the chance, at their corresponding completion, to provide rational decisions on the general need of recovery works and their volume depending on destruction level. Especially important for rational design decisions development, which ensure the demanded constructional safety of building structures, is library creation of the basic mathematical models of standard processes of bearing elements destructions for standard construction designs for the purpose of the further forecast (assessment of the level and probabilities of standard destructions. Some basic mathematical models of destructions processes of the standard elements of building structures are presented in the present article. A model of accounting for construction defects and a model of obtaining requirements to probabilities of partial destructions of a construction are given. Both of these models are probabilistic.

  3. Simulation and Big Data Challenges in Tuning Building Energy Models

    Energy Technology Data Exchange (ETDEWEB)

    Sanyal, Jibonananda [ORNL; New, Joshua Ryan [ORNL

    2013-01-01

    EnergyPlus is the flagship building energy simulation software used to model whole building energy consumption for residential and commercial establishments. A typical input to the program often has hundreds, sometimes thousands of parameters which are typically tweaked by a buildings expert to get it right . This process can sometimes take months. Autotune is an ongoing research effort employing machine learning techniques to automate the tuning of the input parameters for an EnergyPlus input description of a building. Even with automation, the computational challenge faced to run the tuning simulation ensemble is daunting and requires the use of supercomputers to make it tractable in time. In this proposal, we describe the scope of the problem, the technical challenges faced and overcome, the machine learning techniques developed and employed, and the software infrastructure developed/in development when taking the EnergyPlus engine, which was primarily designed to run on desktops, and scaling it to run on shared memory supercomputers (Nautilus) and distributed memory supercomputers (Frost and Titan). The parametric simulations produce data in the order of tens to a couple of hundred terabytes.We describe the approaches employed to streamline and reduce bottlenecks in the workflow for this data, which is subsequently being made available for the tuning effort as well as made available publicly for open-science.

  4. Hierarchy-Based Team Software Process Simulation Model

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    According to the characteristic of Team Software Process (TSP), it adopts a hierarchy-based model combined discrete event model with system dynamics model. This model represents TSP as form of two levels, the inner level embodies the continuity of the software process, the outer embodies the software development process by phases, and the structure and principle of the model is explained in detail, then formalization description of the model is offered. At last, an example is presented to demonstrate the simulation process and result. This model can simulate team software process from various angles, supervise and predict the software process. Also it can make the management of software development become more scientific and improve the quality of software.

  5. A NEO population generation and observation simulation software tool

    Science.gov (United States)

    Müller, Sven; Gelhaus, Johannes; Hahn, Gerhard; Franco, Raffaella

    One of the main targets of ESA's Space Situational Awareness (SSA) program is to build a wide knowledge base about objects that can potentially harm Earth (Near-Earth Objects, NEOs). An important part of this effort is to create the Small Bodies Data Centre (SBDC) which is going to aggregate measurement data from a fully-integrated NEO observation sensor network. Until this network is developed, artificial NEO measurement data is needed in order to validate SBDC algorithms. Moreover, to establish a functioning NEO observation sensor network, it has to be determined where to place sensors, what technical requirements have to be met in order to be able to detect NEOs and which observation strategies work the best. Because of this, a sensor simulation software was needed. This paper presents a software tool which allows users to create and analyse NEO populations and to simulate and analyse population observations. It is a console program written in Fortran and comes with a Graphical User Interface (GUI) written in Java and C. The tool can be distinguished into the components ``Population Generator'' and ``Observation Simulator''. The Population Generator component is responsible for generating and analysing a NEO population. Users can choose between creating fictitious (random) and synthetic populations. The latter are based on one of two models describing the orbital and size distribution of observed NEOs: The existing socalled ``Bottke Model'' (Bottke et al. 2000, 2002) and the new ``Granvik Model'' (Granvik et al. 2014, in preparation) which has been developed in parallel to the tool. Generated populations can be analysed by defining 2D, 3D and scatter plots using various NEO attributes. As a result, the tool creates the appropiate files for the plotting tool ``gnuplot''. The tool's Observation Simulator component yields the Observation Simulation and Observation Analysis functions. Users can define sensor systems using ground- or space-based locations as well as

  6. Distributed Computing Software Building-Blocks for Ubiquitous Computing Societies

    Science.gov (United States)

    Kim, K. H. (Kane

    The steady approach of advanced nations toward realization of ubiquitous computing societies has given birth to rapidly growing demands for new-generation distributed computing (DC) applications. Consequently, economic and reliable construction of new-generation DC applications is currently a major issue faced by the software technology research community. What is needed is a new-generation DC software engineering technology which is at least multiple times more effective in constructing new-generation DC applications than the currently practiced technologies are. In particular, this author believes that a new-generation building-block (BB), which is much more advanced than the current-generation DC object that is a small extension of the object model embedded in languages C++, Java, and C#, is needed. Such a BB should enable systematic and economic construction of DC applications that are capable of taking critical actions with 100-microsecond-level or even 10-microsecond-level timing accuracy, fault tolerance, and security enforcement while being easily expandable and taking advantage of all sorts of network connectivity. Some directions considered worth pursuing for finding such BBs are discussed.

  7. Whole-building Hygrothermal Simulation Model

    DEFF Research Database (Denmark)

    Rode, Carsten; Grau, Karl

    2003-01-01

    An existing integrated simulation tool for dynamic thermal simulation of building was extended with a transient model for moisture release and uptake in building materials. Validation of the new model was begun with comparison against measurements in an outdoor test cell furnished with single...... materials. Almost quasi-steady, cyclic experiments were used to compare the indoor humidity variation and the numerical results of the integrated simulation tool with the new moisture model. Except for the case with chipboard as furnishing, the predictions of indoor humidity with the detailed model were...

  8. Buy, don't build -- What does that mean for a software developer?

    International Nuclear Information System (INIS)

    The buzz phrase of the 1990's for the petroleum software industry has become ''buy, don't build.'' For an end user in an oil company, this generally means acquiring application software rather than developing it internally. The concept of buy, don't build can also apply for a software developer. Purchasing software toolkit components can expedite the development of an application as well as reduce future support requirements

  9. GENERIC BUILDING BLOCKS FOR SIMULATION MODELLING OF STOCHASTIC CONTINUOUS SYSTEMS♣

    Directory of Open Access Journals (Sweden)

    M. Albertyn

    2012-01-01

    Full Text Available

    ENGLISH ABSTRACT: The key objective is to present the generic building blocks of a methodology that can be used to model stochastic continuous systems efficiently. The original simulation model of a real-world system is used as the basis for the development of a generic modelling methodology. The generic building blocks of the methodology are used to construct two new simulation models using two different simulation software packages (Arena and Simul8. The evaluation method, the determination of adequate sample sizes and the verification and validation of the models are discussed. The models and software packages are compared and conclusions are presented.

    AFRIKAANSE OPSOMMING: Die hoofdoelwit is om die generiese boublokke van ‘n metodiek voor te hou wat gebruik kan word om stogastiese kontinue stelsels doeltreffend te modelleer. Die oorspronklike simulasiemodel van ‘n werklike-wêreld-stelsel word gebruik as die basis vir die ontwikkeling van ‘n generiese modelleringsmetodiek. Die generiese boublokke van die metodiek word gebruik om twee nuwe simulasiemodelle te konstrueer met twee verskillende simulasiesagtewarepakkette (Arena en Simul8. Die evaluasiemetode, die vasstelling van voldoende monstergroottes en die verifikasie en validering van die modelle word bespreek. Die modelle en sagtewarepakkette word vergelyk en gevolgtrekkings word voorgehou.

  10. Building America House Simulation Protocols (Revised)

    Energy Technology Data Exchange (ETDEWEB)

    Hendron, R.; Engebrecht, C.

    2010-10-01

    The House Simulation Protocol document was developed to track and manage progress toward Building America's multi-year, average whole-building energy reduction research goals for new construction and existing homes, using a consistent analytical reference point. This report summarizes the guidelines for developing and reporting these analytical results in a consistent and meaningful manner for all home energy uses using standard operating conditions.

  11. Modular modeling system for building distributed hydrologic models with a user-friendly software package

    Science.gov (United States)

    Wi, S.; Ray, P. A.; Brown, C.

    2015-12-01

    A software package developed to facilitate building distributed hydrologic models in a modular modeling system is presented. The software package provides a user-friendly graphical user interface that eases its practical use in water resources-related research and practice. The modular modeling system organizes the options available to users when assembling models according to the stages of hydrological cycle, such as potential evapotranspiration, soil moisture accounting, and snow/glacier melting processes. The software is intended to be a comprehensive tool that simplifies the task of developing, calibrating, validating, and using hydrologic models through the inclusion of intelligent automation to minimize user effort, and reduce opportunities for error. Processes so far automated include the definition of system boundaries (i.e., watershed delineation), climate and geographical input generation, and parameter calibration. Built-in post-processing toolkits greatly improve the functionality of the software as a decision support tool for water resources system management and planning. Example post-processing toolkits enable streamflow simulation at ungauged sites with predefined model parameters, and perform climate change risk assessment by means of the decision scaling approach. The software is validated through application to watersheds representing a variety of hydrologic regimes.

  12. The portability of the "Electronics Workbench" simulation software to China

    NARCIS (Netherlands)

    Collis, Betty; Zhi-Cheng, Dong

    1993-01-01

    This article discusses the portability of the Canadian-made simulation software package, "Electronic Workbench" package (EWB) to China. As part of a larger project investigating the portability of various educational software packages, the EWB package was used in electronics instruction in China and

  13. Porting a Java-based Brain Simulation Software to C++

    CERN Document Server

    CERN. Geneva

    2015-01-01

    A currently available software solution to simulate neural development is Cx3D. However, this software is Java-based, and not ideal for high performance computing. This talk presents our step-by-step porting approach, that uses SWIG as a tool to interface C++ code from Java.

  14. Towards an Analysis of Daylighting Simulation Software

    Directory of Open Access Journals (Sweden)

    Juan J. Sendra

    2011-06-01

    Full Text Available The aim of this article was to assess some of the main lighting software programs habitually used in architecture, subjecting them to a series of trials and analyzing the light distribution obtained in situations with different orientations, dates and geometry. The analysis examines Lightscape 3.2, Desktop Radiance 2.0, Lumen Micro 7.5, Ecotect 5.5 and Dialux 4.4.

  15. Towards an Analysis of Daylighting Simulation Software

    OpenAIRE

    Sendra, Juan J.; Jaime Navarro; Ignacio Acosta

    2011-01-01

    The aim of this article was to assess some of the main lighting software programs habitually used in architecture, subjecting them to a series of trials and analyzing the light distribution obtained in situ ations with different orientations, dates and geometry. The analysis examines Lightscape 3.2, Desktop Radiance 2.0, Lumen Micro 7.5, Ecotect 5.5 and Dialux 4.4.

  16. Building energy analysis of Electrical Engineering Building from DesignBuilder tool: calibration and simulations

    Science.gov (United States)

    Cárdenas, J.; Osma, G.; Caicedo, C.; Torres, A.; Sánchez, S.; Ordóñez, G.

    2016-07-01

    This research shows the energy analysis of the Electrical Engineering Building, located on campus of the Industrial University of Santander in Bucaramanga - Colombia. This building is a green pilot for analysing energy saving strategies such as solar pipes, green roof, daylighting, and automation, among others. Energy analysis was performed by means of DesignBuilder software from virtual model of the building. Several variables were analysed such as air temperature, relative humidity, air velocity, daylighting, and energy consumption. According to two criteria, thermal load and energy consumption, critical areas were defined. The calibration and validation process of the virtual model was done obtaining error below 5% in comparison with measured values. The simulations show that the average indoor temperature in the critical areas of the building was 27°C, whilst relative humidity reached values near to 70% per year. The most critical discomfort conditions were found in the area of the greatest concentration of people, which has an average annual temperature of 30°C. Solar pipes can increase 33% daylight levels into the areas located on the upper floors of the building. In the case of the green roofs, the simulated results show that these reduces of nearly 31% of the internal heat gains through the roof, as well as a decrease in energy consumption related to air conditioning of 5% for some areas on the fourth and fifth floor. The estimated energy consumption of the building was 69 283 kWh per year.

  17. Software To Secure Distributed Propulsion Simulations

    Science.gov (United States)

    Blaser, Tammy M.

    2003-01-01

    Distributed-object computing systems are presented with many security threats, including network eavesdropping, message tampering, and communications middleware masquerading. NASA Glenn Research Center, and its industry partners, has taken an active role in mitigating the security threats associated with developing and operating their proprietary aerospace propulsion simulations. In particular, they are developing a collaborative Common Object Request Broker Architecture (CORBA) Security (CORBASec) test bed to secure their distributed aerospace propulsion simulations. Glenn has been working with its aerospace propulsion industry partners to deploy the Numerical Propulsion System Simulation (NPSS) object-based technology. NPSS is a program focused on reducing the cost and time in developing aerospace propulsion engines

  18. SORPAS – The Professional Software for Simulation of Resistance Welding

    DEFF Research Database (Denmark)

    Zhang, Wenqi

    2002-01-01

    and process optimization. After simulation, the dynamic process parameters are graphically displayed. The distributions of temperature, current, stress and deformation in the materials are displayed in color, which can be animated like slow-motion video. The software has been extensively verified and today......Based on long time engineering research and dedicated collaborations with industry, the professional welding software, SORPAS, has been developed for simulation of resistance projection and spot welding processes applying the powerful finite element method (FEM). In order to make the software...

  19. Design and Implementation of Software for Resistance Welding Process Simulations

    DEFF Research Database (Denmark)

    Zhang, Wenqi

    2003-01-01

    of work pieces and electrodes as well as process parameter settings similar to real machine settings, the software has been readily applied in industry for supporting product development and process optimization. After simulation, the dynamic process parameters are graphically displayed. The distributions......Based on long time engineering research and dedicated collaborations with industry, a new welding software, SORPAS, has been developed for simulation of resistance projection and spot welding processes applying the powerful finite element method (FEM). In order to make the software directly usable...

  20. Structural considerations for a software life cycle dynamic simulation model

    Science.gov (United States)

    Tausworthe, R. C.; Mckenzie, M.; Lin, C. Y.

    1983-01-01

    This paper presents the results of a preliminary study into the prospects for simulating the software implementation and maintenance life cycle process, with the aim of producing a computerized tool for use by management and software engineering personnel in project planning, tradeoff studies involving product, environmental, situational, and technological factors, and training. The approach taken is the modular application of a 'flow of resource' concept to the systems dynamics simulation modeling technique. The software life cycle process is represented as a number of stochastic, time-varying, interacting work tasks that each achieves one of the project milestones. Each task is characterized by the item produced, the personnel applied, and the budgetary profile.

  1. Software Platform Evaluation - Verifiable Fuel Cycle Simulation (VISION) Model

    Energy Technology Data Exchange (ETDEWEB)

    J. J. Jacobson; D. E. Shropshire; W. B. West

    2005-11-01

    The purpose of this Software Platform Evaluation (SPE) is to document the top-level evaluation of potential software platforms on which to construct a simulation model that satisfies the requirements for a Verifiable Fuel Cycle Simulation Model (VISION) of the Advanced Fuel Cycle (AFC). See the Software Requirements Specification for Verifiable Fuel Cycle Simulation (VISION) Model (INEEL/EXT-05-02643, Rev. 0) for a discussion of the objective and scope of the VISION model. VISION is intended to serve as a broad systems analysis and study tool applicable to work conducted as part of the AFCI (including costs estimates) and Generation IV reactor development studies. This document will serve as a guide for selecting the most appropriate software platform for VISION. This is a “living document” that will be modified over the course of the execution of this work.

  2. ALICES: advanced software engineering workshop for real-time simulators

    Energy Technology Data Exchange (ETDEWEB)

    Noel, A.; Rouault, G. [Tractebel, Brussels (Belgium)

    1997-12-01

    The ALICES software workshop is presently being applied for the development of a multifunctional simulator for Belgium`s Tihange-1 nuclear power unit. This will be the best validation for all the functions included in the tools. It is believed that ALICES will permit the development of quality realtime simulators at a significantly lower price.

  3. Parallelization of Rocket Engine Simulator Software (PRESS)

    Science.gov (United States)

    Cezzar, Ruknet

    1998-01-01

    We have outlined our work in the last half of the funding period. We have shown how a demo package for RESSAP using MPI can be done. However, we also mentioned the difficulties with the UNIX platform. We have reiterated some of the suggestions made during the presentation of the progress of the at Fourth Annual HBCU Conference. Although we have discussed, in some detail, how TURBDES/PUMPDES software can be run in parallel using MPI, at present, we are unable to experiment any further with either MPI or PVM. Due to X windows not being implemented, we are also not able to experiment further with XPVM, which it will be recalled, has a nice GUI interface. There are also some concerns, on our part, about MPI being an appropriate tool. The best thing about MPr is that it is public domain. Although and plenty of documentation exists for the intricacies of using MPI, little information is available on its actual implementations. Other than very typical, somewhat contrived examples, such as Jacobi algorithm for solving Laplace's equation, there are few examples which can readily be applied to real situations, such as in our case. In effect, the review of literature on both MPI and PVM, and there is a lot, indicate something similar to the enormous effort which was spent on LISP and LISP-like languages as tools for artificial intelligence research. During the development of a book on programming languages [12], when we searched the literature for very simple examples like taking averages, reading and writing records, multiplying matrices, etc., we could hardly find a any! Yet, so much was said and done on that topic in academic circles. It appears that we faced the same problem with MPI, where despite significant documentation, we could not find even a simple example which supports course-grain parallelism involving only a few processes. From the foregoing, it appears that a new direction may be required for more productive research during the extension period (10/19/98 - 10

  4. Building Scientific Workflows for the Geosciences with Open Community Software

    Science.gov (United States)

    Pierce, M. E.; Marru, S.; Weerawarana, S. M.

    2012-12-01

    We describe the design and development of the Apache Airavata scientific workflow software and its application to problems in geosciences. Airavata is based on Service Oriented Architecture principles and is developed as general purpose software for managing large-scale science applications on supercomputing resources such as the NSF's XSEDE. Based on the NSF-funded EarthCube Workflow Working Group activities, we discuss the application of this software relative to specific requirements (such as data stream data processing, event triggering, dealing with large data sets, and advanced distributed execution patterns involved in data mining). We also consider the role of governance in EarthCube software development and present the development of Airavata software through the Apache Software Foundation's community development model. We discuss the potential impacts on software accountability and sustainability using this model.

  5. 2014 Building America House Simulation Protocols

    Energy Technology Data Exchange (ETDEWEB)

    Wilson, E. [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Engebrecht, C. Metzger [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Horowitz, S. [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Hendron, R. [National Renewable Energy Laboratory (NREL), Golden, CO (United States)

    2014-03-01

    As Building America has grown to include a large and diverse cross-section of the home building and retrofit industries, it has become more important to develop accurate, consistent analysis techniques to measure progress towards the program's goals. The House Simulation Protocol (HSP) document provides guidance to program partners and managers so they can compare energy savings for new construction and retrofit projects. The HSP provides the program with analysis methods that are proven to be effective and reliable in investigating the energy use of advanced energy systems and of entire houses.

  6. COMPUTER SIMULATION: COMPARATIVE ANALYSIS OF SOFTWARES ARENA® AND PROMODEL®

    Directory of Open Access Journals (Sweden)

    Luiz Enéias Zanetti Cardoso

    2016-04-01

    Full Text Available The computer simulation is not exclusive areas of Logistics and Production, implementation takes place within the limits of technical expertise of professionals. Although not widespread at present, there is a rise of projection in use, as the numerous application possibilities, if properly modeled in reality presented face. This article proposes to present comparative and qualitative analysis of two computer simulation software, version Arena® 14,000 Student and ProModel® RunTimeSilve version - Demo, according to the following criteria: desktop, access to commands, ease in developing the software model and accessories, and can be seen the main features of each simulation software, as well as the differences between their interfaces, however, both were confirmed as great tools to support management processes.

  7. PASSATA - Object oriented numerical simulation software for adaptive optics

    CERN Document Server

    Agapito, G; Esposito, S

    2016-01-01

    We present the last version of the PyrAmid Simulator Software for Adaptive opTics Arcetri (PASSATA), an IDL and CUDA based object oriented software developed in the Adaptive Optics group of the Arcetri observatory for Monte-Carlo end-to-end adaptive optics simulations. The original aim of this software was to evaluate the performance of a single conjugate adaptive optics system for ground based telescope with a pyramid wavefront sensor. After some years of development, the current version of PASSATA is able to simulate several adaptive optics systems: single conjugate, multi conjugate and ground layer, with Shack Hartmann and Pyramid wavefront sensors. It can simulate from 8m to 40m class telescopes, with diffraction limited and resolved sources at finite or infinite distance from the pupil. The main advantages of this software are the versatility given by the object oriented approach and the speed given by the CUDA implementation of the most computational demanding routines. We describe the software with its...

  8. Methodology for Validating Building Energy Analysis Simulations

    Energy Technology Data Exchange (ETDEWEB)

    Judkoff, R.; Wortman, D.; O' Doherty, B.; Burch, J.

    2008-04-01

    The objective of this report was to develop a validation methodology for building energy analysis simulations, collect high-quality, unambiguous empirical data for validation, and apply the validation methodology to the DOE-2.1, BLAST-2MRT, BLAST-3.0, DEROB-3, DEROB-4, and SUNCAT 2.4 computer programs. This report covers background information, literature survey, validation methodology, comparative studies, analytical verification, empirical validation, comparative evaluation of codes, and conclusions.

  9. Model of Next Generation Energy-Efficient Design Software for Buildings

    Institute of Scientific and Technical Information of China (English)

    MA Zhiliang; ZHAO Yili

    2008-01-01

    Energy-efficient design for buildings (EEDB) is a vital step towards building energy-saving. In or-der to greatly improve the EEDB, the next generation EEDB software that makes use of latest technologies needs to be developed. This paper mainly focuses on establishing the model of the next generation EEDB software. Based on the investigation of literatures and the interviews to the designers, the requirements on the next generation EEDB software were identified, where the lifecycle assessment on both energy con-sumption and environmental impacts, 3D graphics support, and building information modeling (BIM) support were stressed. Then the workflow for using the next generation EEDB software was established. Finally,based on the workflow, the framework model for the software was proposed, and the partial models and the corresponding functions were systematically analyzed. The model lays a solid foundation for developing the next generation EEDB software.

  10. Porting a Java-based Brain Simulation Software to C++

    OpenAIRE

    Breitwieser, Lukas Johannes; Bauer, Roman; Manca, Marco; Rademakers, Fons

    2015-01-01

    Abstract This report describes the process of porting the Java-based Brain Simulation Software Cortex3D (Cx3D) to C++. Cx3D was originally developed in Java, which is not ideal for high-performance computing. This is the first step towards the goal to create a software tonbsp;simulate richer and deeper structures of the brain. An iterative porting approach has beennbsp;chosen for this task. This means, that one Java class is translated at each iteration. Afternbsp;the C++ representation o...

  11. Development of a Prototype Automation Simulation Scenario Generator for Air Traffic Management Software Simulations

    Science.gov (United States)

    Khambatta, Cyrus F.

    2007-01-01

    A technique for automated development of scenarios for use in the Multi-Center Traffic Management Advisor (McTMA) software simulations is described. The resulting software is designed and implemented to automate the generation of simulation scenarios with the intent of reducing the time it currently takes using an observational approach. The software program is effective in achieving this goal. The scenarios created for use in the McTMA simulations are based on data taken from data files from the McTMA system, and were manually edited before incorporation into the simulations to ensure accuracy. Despite the software s overall favorable performance, several key software issues are identified. Proposed solutions to these issues are discussed. Future enhancements to the scenario generator software may address the limitations identified in this paper.

  12. Photovoltaics software package. Simulation, design and calculation software for photovoltaics; Softwarepaket Photovoltaik. Simulations-, Auslegungs- und Berechnungsprogramme fuer die Photovoltaik

    Energy Technology Data Exchange (ETDEWEB)

    Haas, Rudolf; Weinreich, Bernhard

    2007-07-01

    The software package comprises simulation, design and calculation tools: Professional configuration of photovoltaic systems; Design and optimization of PV systems and components; 3D visualization of shading situations; Economic efficiency and profit calculations; Software status replort; Measuring technology for characteristics, insolation, infrared radiation, etc.; Databases for modules, inverters and supports; Insolation maps for Germany dating back to 1998; Check lists: Site, diemensioning, comparison of systems, etc.; Useful addresses, bibliography, manufacturers; Other renewable energy sources, and much more. (orig.)

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

    Science.gov (United States)

    Vijay, Ritesh; Sharma, A.; Kumar, M.; Shende, V.; Chakrabarti, T.; Gupta, Rajesh

    2015-12-01

    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.

  14. Engineering bioinformatics: building reliability, performance and productivity into bioinformatics software.

    Science.gov (United States)

    Lawlor, Brendan; Walsh, Paul

    2015-01-01

    There is a lack of software engineering skills in bioinformatic contexts. We discuss the consequences of this lack, examine existing explanations and remedies to the problem, point out their shortcomings, and propose alternatives. Previous analyses of the problem have tended to treat the use of software in scientific contexts as categorically different from the general application of software engineering in commercial settings. In contrast, we describe bioinformatic software engineering as a specialization of general software engineering, and examine how it should be practiced. Specifically, we highlight the difference between programming and software engineering, list elements of the latter and present the results of a survey of bioinformatic practitioners which quantifies the extent to which those elements are employed in bioinformatics. We propose that the ideal way to bring engineering values into research projects is to bring engineers themselves. We identify the role of Bioinformatic Engineer and describe how such a role would work within bioinformatic research teams. We conclude by recommending an educational emphasis on cross-training software engineers into life sciences, and propose research on Domain Specific Languages to facilitate collaboration between engineers and bioinformaticians.

  15. Daylighting simulation : comparison of softwares for architect's utilization

    Energy Technology Data Exchange (ETDEWEB)

    Christakou, D.E.; Amorim, C.N.D. [Brazil Univ., Brasilia (Brazil). Faculty of Architecture and Urbanism

    2005-07-01

    This study analyzed and compared 4 daylighting software packages to determine the primary benefits and limits of each one, while considering the priorities for the use of the software by architects. The complex task of daylight simulation is an important step in designing buildings, particularly when the main objective is comfort and energy conservation. Simulation is not yet commonly practiced by professional architects because of the complexities of various software packages, the lack of user friendly interfaces and difficulty in interpreting results. The 4 software packages that were evaluated in this study were: (1) Desktop Radiance, (2) Rayfront, (3) Relux 2004 Vision, and (4) Lightscape. Criteria such as interfaces, flexibility, and help manuals were also analyzed in an effort to establish a frame of the main points to be considered when choosing daylighting software for architectural use, both in educational and office environments. Simulations of a test room were performed in which some parameters were modified to verify the performance of the following main criteria: flexibility in adapting to the architect's workflow; the use of state of the art algorithms; numerical precision; and, access possibility by Brazilian architects. The results demonstrate the potential of software's improvement, particular in terms of user interfaces and help manuals. The study showed that Relux 2004 Vision is the most adequate for architect's use. Rayfront and Desktop Radiance presented more difficulties in the design process, but Desktop Radiance had the advantage of being enclosed in AUTOCAD, a well known interface. Lightscape had a user friendly interface but was not as intuitive as Relux. It was concluded that the ideal daylighting simulation software does not yet exist. The ideal software should integrate diverse factors and combine edition and modeling tools beyond luminous evaluation and thermal consequences of daylight use. 5 refs., 3 tabs., 4 figs.

  16. Simulation Of Probabilistic Wind Loads On A Building

    Science.gov (United States)

    Chamis, Christos C.; Shah, Ashwin R.

    1994-01-01

    Method of simulating probabilistic windloads on building developed. Numerical results of simulation used to assess reliability of building and risk associated with tendencies of large gusts or high steady winds to cause building to sway, buckle, and/or overturn. Using method to analyze proposed design in iterative design cycle, building designed for specified reliability.

  17. Implementation and Simulation Results using Autonomous Aerobraking Development Software

    Science.gov (United States)

    Maddock, Robert W.; DwyerCianciolo, Alicia M.; Bowes, Angela; Prince, Jill L. H.; Powell, Richard W.

    2011-01-01

    An Autonomous Aerobraking software system is currently under development with support from the NASA Engineering and Safety Center (NESC) that would move typically ground-based operations functions to onboard an aerobraking spacecraft, reducing mission risk and mission cost. The suite of software that will enable autonomous aerobraking is the Autonomous Aerobraking Development Software (AADS) and consists of an ephemeris model, onboard atmosphere estimator, temperature and loads prediction, and a maneuver calculation. The software calculates the maneuver time, magnitude and direction commands to maintain the spacecraft periapsis parameters within design structural load and/or thermal constraints. The AADS is currently tested in simulations at Mars, with plans to also evaluate feasibility and performance at Venus and Titan.

  18. Model calibration for building energy efficiency simulation

    International Nuclear Information System (INIS)

    Highlights: • Developing a 3D model relating to building architecture, occupancy and HVAC operation. • Two calibration stages developed, final model providing accurate results. • Using an onsite weather station for generating the weather data file in EnergyPlus. • Predicting thermal behaviour of underfloor heating, heat pump and natural ventilation. • Monthly energy saving opportunities related to heat pump of 20–27% was identified. - Abstract: This research work deals with an Environmental Research Institute (ERI) building where an underfloor heating system and natural ventilation are the main systems used to maintain comfort condition throughout 80% of the building areas. Firstly, this work involved developing a 3D model relating to building architecture, occupancy and HVAC operation. Secondly, the calibration methodology, which consists of two levels, was then applied in order to insure accuracy and reduce the likelihood of errors. To further improve the accuracy of calibration a historical weather data file related to year 2011, was created from the on-site local weather station of ERI building. After applying the second level of calibration process, the values of Mean bias Error (MBE) and Cumulative Variation of Root Mean Squared Error (CV(RMSE)) on hourly based analysis for heat pump electricity consumption varied within the following ranges: (MBE)hourly from −5.6% to 7.5% and CV(RMSE)hourly from 7.3% to 25.1%. Finally, the building was simulated with EnergyPlus to identify further possibilities of energy savings supplied by a water to water heat pump to underfloor heating system. It found that electricity consumption savings from the heat pump can vary between 20% and 27% on monthly bases

  19. Simulation-based optimization for software dynamic testing processes

    OpenAIRE

    Ruiz, Mercedes; Tuya González, Pablo Javier; Crespo, Daniel

    2014-01-01

    Managing software development projects requires the coordination of different processes that may be performed by different teams, e.g., a development team and a separate testing team. This coordination aims at optimizing the tradeoff between cost, schedule and delivered quality. Simulation models are a powerful tool to explore what-if scenarios that help managers to achieve this trade-off and to fine-tune different project parameters. This paper presents a simulation model based on a multi-pa...

  20. MARLIN, software to create, run, and analyse spatially realistic simulations

    NARCIS (Netherlands)

    P.G. Meirmans

    2011-01-01

    Marlin is a software to create, run, analyse, and visualize spatially explicit population genetic simulations. It provides an intuitive user interface with which the geographical layout of a metapopulation can be drawn by hand or loaded from a map. Furthermore, the interface allows easy selection of

  1. Validation process of the ISIS CFD software for fire simulation

    International Nuclear Information System (INIS)

    Fire codes are more and more used for safety analysis of nuclear power plants. In several OECD member countries, the accuracy of the calculated simulation with CFD code has to be demonstrated; this is the aim of the Verification and Validation process (V and V). In this context the French 'Institut de Radioprotection et de Surete Nucleaire' (IRSN) develops a computational software, named ISIS, dedicated to the simulation of buoyant fire in compartment mechanically ventilated. ISIS is based on the scientific computing development platform PELICANS and benefits of the practicalities for implementing methods. The code ISIS is a freeware, available at https://gforge.irsn.fr/gf/project/isis. The physical modelling used in ISIS is classic for industrial application in large compartments. The turbulence approach is based on the Reynolds-Averaged-Navier-Stokes equations, supplemented by a two-equation closure and the eddy viscosity model. The turbulent production term is adapted to cope with buoyancy effects. Combustion modelling relies on a single reaction equation. The classical eddy dissipation approach is used for the mean chemical reaction rate which means that it is controlled solely by the turbulent mixture. The Finite Volume method is employed to treat radiation exchanges. Both incompressible and low Mach number flows are dealt with. The originality of the ISIS code is its capacity to take into account the effect of ventilation on the pressure. The thermodynamic pressure and the mass flow rate for ventilation vents are related by the mass balances in the compartment and in the ventilation branch where an aeraulic resistance is taken into account. For numerical solution, a fractional step algorithm has been developed. The spatial discretization combines mixed finite element for the Navier-Stokes equation and finite volumes scheme for transport (advection-diffusion-reaction) equation in order to ensure the velocity stability and the conservation in physical range of

  2. Building a parallel file system simulator

    International Nuclear Information System (INIS)

    Parallel file systems are gaining in popularity in high-end computing centers as well as commercial data centers. High-end computing systems are expected to scale exponentially and to pose new challenges to their storage scalability in terms of cost and power. To address these challenges scientists and file system designers will need a thorough understanding of the design space of parallel file systems. Yet there exist few systematic studies of parallel file system behavior at petabyte- and exabyte scale. An important reason is the significant cost of getting access to large-scale hardware to test parallel file systems. To contribute to this understanding we are building a parallel file system simulator that can simulate parallel file systems at very large scale. Our goal is to simulate petabyte-scale parallel file systems on a small cluster or even a single machine in reasonable time and fidelity. With this simulator, file system experts will be able to tune existing file systems for specific workloads, scientists and file system deployment engineers will be able to better communicate workload requirements, file system designers and researchers will be able to try out design alternatives and innovations at scale, and instructors will be able to study very large-scale parallel file system behavior in the class room. In this paper we describe our approach and provide preliminary results that are encouraging both in terms of fidelity and simulation scalability.

  3. 2014 Building America House Simulation Protocols

    Energy Technology Data Exchange (ETDEWEB)

    Wilson, E.; Engebrecht-Metzger, C.; Horowitz, S.; Hendron, R.

    2014-03-01

    As BA has grown to include a large and diverse cross-section of the home building and retrofit industries, it has become more important to develop accurate, consistent analysis techniques to measure progress towards the program's goals. The House Simulation Protocol (HSP) document provides guidance to program partners and managers so they can compare energy savings for new construction and retrofit projects. The HSP provides the program with analysis methods that are proven to be effective and reliable in investigating the energy use of advanced energy systems and of entire houses.

  4. Deep in Data. Empirical Data Based Software Accuracy Testing Using the Building America Field Data Repository

    Energy Technology Data Exchange (ETDEWEB)

    Neymark, J. [J.Neymark and Associates, Golden, CO (United States); Roberts, D. [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2013-06-01

    This paper describes progress toward developing a usable, standardized, empirical data-based software accuracy test suite using home energy consumption and building description data. Empirical data collected from around the United States have been translated into a uniform Home Performance Extensible Markup Language format that may enable software developers to create translators to their input schemes for efficient access to the data. This could allow for modeling many homes expediently, and thus implementing software accuracy test cases by applying the translated data.

  5. Simulation and video software development for soil consolidation testing

    NARCIS (Netherlands)

    Karim, U.F.A.

    2003-01-01

    The development techniques and file structures of CTM, a novel multi-media (computer simulation and video) package on consolidation and laboratory consolidation testing, are presented in this paper. A courseware tool called Authorware proved to be versatile for building the package and the paper sho

  6. An Integrated Software Package to Enable Predictive Simulation Capabilities

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Yousu; Fitzhenry, Erin B.; Jin, Shuangshuang; Palmer, Bruce J.; Sharma, Poorva; Huang, Zhenyu

    2016-08-11

    The power grid is increasing in complexity due to the deployment of smart grid technologies. Such technologies vastly increase the size and complexity of power grid systems for simulation and modeling. This increasing complexity necessitates not only the use of high-performance-computing (HPC) techniques, but a smooth, well-integrated interplay between HPC applications. This paper presents a new integrated software package that integrates HPC applications and a web-based visualization tool based on a middleware framework. This framework can support the data communication between different applications. Case studies with a large power system demonstrate the predictive capability brought by the integrated software package, as well as the better situational awareness provided by the web-based visualization tool in a live mode. Test results validate the effectiveness and usability of the integrated software package.

  7. SimulCAT: Windows Software for Simulating Computerized Adaptive Test Administration

    Science.gov (United States)

    Han, Kyung T.

    2012-01-01

    Most, if not all, computerized adaptive testing (CAT) programs use simulation techniques to develop and evaluate CAT program administration and operations, but such simulation tools are rarely available to the public. Up to now, several software tools have been available to conduct CAT simulations for research purposes; however, these existing…

  8. Multi-platform Automated Software Building and Packaging

    OpenAIRE

    Rodriguez, A. Abad; Gouveia, V. E. Gomes; Meneses, D.; Capannini, F.; Aimar, A.; Meglio, A. Di

    2012-01-01

    One of the major goals of the EMI (European Middleware Initiative) project is the integration of several components of the pre-existing middleware (ARC, gLite, UNICORE and dCache) into a single consistent set of packages with uniform distributions and repositories. Those individual middleware projects have been developed in the last decade by tens of development teams and before EMI were all built and tested using different tools and dedicated services. The software, millions of lines of code...

  9. iMOOC : building a platform from existing software components

    OpenAIRE

    Rocio, Vitor; Coelho, José, 1948-

    2015-01-01

    iMOOC is a new pedagogical model for massive open online courses (Teixeira & Mota, 2013), that evolved from UAb’s online model (Pereira et al., 2008), based on its four pillars of student-centered learning, interaction, flexibility and digital inclusion. It is also a software platform, that supports this model, and that was developed at UAb in close articulation with the pedagogical model. In this paper we describe the guidelines that oriented such development, an...

  10. Cybernetic Transportation Systems Design and Development: Simulation Software cybercars

    OpenAIRE

    Boissé, Sébastien; Benenson, Rodrigo; Bouraoui, Laurent; Parent, Michel; Vlacic, Ljubo

    2007-01-01

    The growing number of vehicles saturates cities in terms of congestion and pollution. A Cybernetic Transportation System (CTS) appears to be a way to resolve those problems. Based on a network of clean driverless vehicles (the cybercars), CTS aims to improve safety and organization of urban transport by providing a door-to-door complement to efficient and fast mass transport. The simulation software presented in this paper has a goal to facilitate the development of such a transportation syst...

  11. A Simple Software Application for Simulating Commercially Available Solar Panels

    OpenAIRE

    2014-01-01

    This article addresses the formulation and validation of a simple PC based software application developed for simulating commercially available solar panels. The important feature of this application is its capability to produce speedy results in the form of solar panel output characteristics at given environmental conditions by using minimal input data. Besides, it is able to deliver critical information about the maximum power point of the panel at a given environmental condition in quick s...

  12. Nucleonica: Web-based Software Tools for Simulations and Analysis

    OpenAIRE

    Magill, Joseph; DREHER Raymond; SOTI Zsolt; LASCHE George

    2012-01-01

    The authors present a description of a new web-based software portal for simulation and analysis for a wide range of commonly encountered nuclear science applications. Advantages of a web-based approach include availability wherever there is internet access, intuitive user-friendly interface, remote access to high-power computing resources, and continual maintenance, improvement, and addition of tools and techniques common to the nuclear science industry. A description of the nuclear data res...

  13. A Software Development Simulation Model of a Spiral Process

    Science.gov (United States)

    Mizell, Carolyn; Malone, Linda

    2007-01-01

    There is a need for simulation models of software development processes other than the waterfall because processes such as spiral development are becoming more and more popular. The use of a spiral process can make the inherently difficult job of cost and schedule estimation even more challenging due to its evolutionary nature, but this allows for a more flexible process that can better meet customers' needs. This paper will present a discrete event simulation model of spiral development that can be used to analyze cost and schedule effects of using such a process in comparison to a waterfall process.

  14. Simulated spectra for QA/QC of spectral analysis software

    Energy Technology Data Exchange (ETDEWEB)

    Jackman, K. R. (Kevin R.); Biegalski, S. R.

    2004-01-01

    Monte Carlo simulated spectra have been developed to test the peak analysis algorithms of several spectral analysis software packages. Using MCNP 5, generic sample spectra were generated in order to perform ANSI N42.14 standard spectral tests on Canberra Genie-2000, Ortec GammaVision, and UniSampo. The reference spectra were generated in MCNP 5 using an F8, pulse height, tally with a detector model of an actual Germanium detector used in counting. The detector model matches the detector resolution, energy calibration, and efficiency. The simulated spectra have been found to be useful in testing the reliability and performance of spectral analysis programs. The detector model used was found to be useful in testing the performance of modern spectral analysis software tools. The software packages were analyzed and found to be in compliance with the ANSI 42.14 tests of the peak-search and peak-fitting algorithms. This method of using simulated spectra can be used to perform the ANSI 42.14 tests on the reliability and performance of spectral analysis programs in the absence of standard radioactive materials.

  15. The nightly build and test system for LCG AA and LHCb software

    Science.gov (United States)

    Kruzelecki, Karol; Roiser, Stefan; Degaudenzi, Hubert

    2010-04-01

    The core software stack both from the LCG Application Area and LHCb consists of more than 25 C++/Fortran/Python projects built for about 20 different configurations on Linux, Windows and MacOSX. To these projects, one can also add about 70 external software packages (Boost, Python, Qt, CLHEP, ...) which also have to be built for the same configurations. It order to reduce the time of the development cycle and assure the quality, a framework has been developed for the daily (in fact nightly) build and test of the software. Performing the build and the tests on several configurations and platforms increases the efficiency of the unit and integration tests. Main features: - flexible and fine grained setup (full, partial build) through a web interface; - possibility to build several "slots" with different configurations; - precise and highly granular reports on a web server; - support for CMT projects (but not only) with their cross-dependencies; - scalable client-server architecture for the control machine and its build machines; - copy of the results in a common place to allow early view of the software stack. The nightly build framework is written in Python for portability and it is easily extensible to accommodate new build procedures.

  16. The nightly build and test system for LCG AA and LHCb software

    International Nuclear Information System (INIS)

    The core software stack both from the LCG Application Area and LHCb consists of more than 25 C++/Fortran/Python projects built for about 20 different configurations on Linux, Windows and MacOSX. To these projects, one can also add about 70 external software packages (Boost, Python, Qt, CLHEP, ...) which also have to be built for the same configurations. It order to reduce the time of the development cycle and assure the quality, a framework has been developed for the daily (in fact nightly) build and test of the software. Performing the build and the tests on several configurations and platforms increases the efficiency of the unit and integration tests. Main features: - flexible and fine grained setup (full, partial build) through a web interface; - possibility to build several 'slots' with different configurations; - precise and highly granular reports on a web server; - support for CMT projects (but not only) with their cross-dependencies; - scalable client-server architecture for the control machine and its build machines; - copy of the results in a common place to allow early view of the software stack. The nightly build framework is written in Python for portability and it is easily extensible to accommodate new build procedures.

  17. Deep in Data: Empirical Data Based Software Accuracy Testing Using the Building America Field Data Repository: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Neymark, J.; Roberts, D.

    2013-06-01

    An opportunity is available for using home energy consumption and building description data to develop a standardized accuracy test for residential energy analysis tools. That is, to test the ability of uncalibrated simulations to match real utility bills. Empirical data collected from around the United States have been translated into a uniform Home Performance Extensible Markup Language format that may enable software developers to create translators to their input schemes for efficient access to the data. This may facilitate the possibility of modeling many homes expediently, and thus implementing software accuracy test cases by applying the translated data. This paper describes progress toward, and issues related to, developing a usable, standardized, empirical data-based software accuracy test suite.

  18. Model for Simulating a Spiral Software-Development Process

    Science.gov (United States)

    Mizell, Carolyn; Curley, Charles; Nayak, Umanath

    2010-01-01

    A discrete-event simulation model, and a computer program that implements the model, have been developed as means of analyzing a spiral software-development process. This model can be tailored to specific development environments for use by software project managers in making quantitative cases for deciding among different software-development processes, courses of action, and cost estimates. A spiral process can be contrasted with a waterfall process, which is a traditional process that consists of a sequence of activities that include analysis of requirements, design, coding, testing, and support. A spiral process is an iterative process that can be regarded as a repeating modified waterfall process. Each iteration includes assessment of risk, analysis of requirements, design, coding, testing, delivery, and evaluation. A key difference between a spiral and a waterfall process is that a spiral process can accommodate changes in requirements at each iteration, whereas in a waterfall process, requirements are considered to be fixed from the beginning and, therefore, a waterfall process is not flexible enough for some projects, especially those in which requirements are not known at the beginning or may change during development. For a given project, a spiral process may cost more and take more time than does a waterfall process, but may better satisfy a customer's expectations and needs. Models for simulating various waterfall processes have been developed previously, but until now, there have been no models for simulating spiral processes. The present spiral-process-simulating model and the software that implements it were developed by extending a discrete-event simulation process model of the IEEE 12207 Software Development Process, which was built using commercially available software known as the Process Analysis Tradeoff Tool (PATT). Typical inputs to PATT models include industry-average values of product size (expressed as number of lines of code

  19. The Architecture of MEG Simulation and Analysis Software

    CERN Document Server

    Cattaneo, PaoloW; Sawada, Ryu; Schneebeli, Matthias; Yamada, Shuei

    2011-01-01

    MEG (Mu to Electron Gamma) is an experiment dedicated to search for the $\\mu^+ \\rightarrow e^+\\gamma$ decay that is strongly suppressed in the Standard Model but predicted in several Super Symmetric extensions of it at an accessible rate. MEG is a small-size experiment ($\\approx 50-60$ physicists at any time) with a life span of about 10 years. The limited human resource available, in particular in the core offline group, emphasized the importance of reusing software and exploiting existing expertise. Great care has been devoted to provide a simple system that hides implementation details to the average programmer. That allowed many members of the collaboration to contribute to the development of the software of the experiment with limited programming skill. The offline software is based on two frameworks: {\\bf REM} in FORTRAN 77 used for the event generation and detector simulation package {\\bf GEM}, based on GEANT 3, and {\\bf ROME} in C++ used in the readout simulation {\\bf Bartender} and in the reconstruct...

  20. A View on Future Building System Modeling and Simulation

    Energy Technology Data Exchange (ETDEWEB)

    Wetter, Michael

    2011-04-01

    This chapter presents what a future environment for building system modeling and simulation may look like. As buildings continue to require increased performance and better comfort, their energy and control systems are becoming more integrated and complex. We therefore focus in this chapter on the modeling, simulation and analysis of building energy and control systems. Such systems can be classified as heterogeneous systems because they involve multiple domains, such as thermodynamics, fluid dynamics, heat and mass transfer, electrical systems, control systems and communication systems. Also, they typically involve multiple temporal and spatial scales, and their evolution can be described by coupled differential equations, discrete equations and events. Modeling and simulating such systems requires a higher level of abstraction and modularisation to manage the increased complexity compared to what is used in today's building simulation programs. Therefore, the trend towards more integrated building systems is likely to be a driving force for changing the status quo of today's building simulation programs. Thischapter discusses evolving modeling requirements and outlines a path toward a future environment for modeling and simulation of heterogeneous building systems.A range of topics that would require many additional pages of discussion has been omitted. Examples include computational fluid dynamics for air and particle flow in and around buildings, people movement, daylight simulation, uncertainty propagation and optimisation methods for building design and controls. For different discussions and perspectives on the future of building modeling and simulation, we refer to Sahlin (2000), Augenbroe (2001) and Malkawi and Augenbroe (2004).

  1. Building America Top Innovations 2012: House Simulation Protocols (the Building America Benchmark)

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2013-01-01

    This Building America Top Innovations profile describes the DOE-sponsored House Simulation Protocols, which have helped ensure consistent and accurate energy-efficiency assessments for tens of thousands of new and retrofit homes supported by the Building America program.

  2. Learning in a Landscape: Simulation-building as Reflexive Intervention

    CERN Document Server

    Beaulieu, Anne; Scharnhorst, Andrea

    2011-01-01

    This article makes a dual contribution to scholarship in science and technology studies (STS) on simulation-building. It both documents a specific simulation-building project, and demonstrates a concrete contribution to interdisciplinary work of STS insights. The article analyses the struggles that arise in the course of determining what counts as theory, as model and even as a simulation. Such debates are especially decisive when working across disciplinary boundaries, and their resolution is an important part of the work involved in building simulations. In particular, we show how ontological arguments about the value of simulations tend to determine the direction of simulation-building. This dynamic makes it difficult to maintain an interest in the heterogeneity of simulations and a view of simulations as unfolding scientific objects. As an outcome of our analysis of the process and reflections about interdisciplinary work around simulations, we propose a chart, as a tool to facilitate discussions about si...

  3. Development and Assessment of a Paper Electrophoresis Simulation Software for Chemical Equilibrium Teaching and Learning

    Directory of Open Access Journals (Sweden)

    E. Montagna

    2014-08-01

    Full Text Available Chemical Equilibrium misconceptions impaired the learning of many biochemicalundergraduate content. It was widely reinforced by chemical education data. On the otherhand there was no data for the consequences in biochemistry learning. OBJECTIVE Weproposed the construction of an Aminoacid Paper Electrophoresis software as a tool forChemical Equilibrium teaching and learning which aims to integrate the representationallevels, being macroscopic, microscopic and symbolic in a way to evidence to student thedynamic character of the equilibrium phenomena. It attenuates misconceptions andreduces impairments on biochemistry learning. Although the simulator is based onclassical biochemistry topic it is designed to deal with chemical equilibrium concepts in thecontext of biochemistry. MATERIALS AND METHODS: The software is an PaperElectrophoresis Simulator programmed in HTML5 language. It guides the student stepstoward the simulation showing the technique fundamentals and variables allowing tochoose aminoacids in a list, as well as build even tetrapeptides and run even four samplesin a single simulation after what is defined a pH for simulation. The simulation results areshown in a depiction of a paper electrophoresis device (macroscopic the speciesproportion in the medium based on the Handerson-Hasselbalch formula (symbolic and thespecies charge change based on the medium pH (microscopic. All activities are guided bya task list based on previous diagnostic on chemical equilibrium misconceptions.RESULTS AND DISCUSSION: Results were based on observation of students classdiscussion and survey. Many of previously diagnosed misconceptions were attenuated intests of chemical equilibrium falling from a 72% to 35% error average; and a studentssurvey agreed with simulator objectives (90%, ease of use (94%, chemicalrepresentations straightness (82%, simulation results (71% integration ofrepresentational levels (87%. CONCLUSIONS: Students declared the software

  4. Software tool for horizontal-axis wind turbine simulation

    Energy Technology Data Exchange (ETDEWEB)

    Vitale, A.J. [Instituto Argentino de Oceanografia, Camino La Carrindanga Km. 7, 5 CC 804, B8000FWB Bahia Blanca (Argentina); Universidad Tecnologica Nacional Facultad Regional Bahia Blanca, GESE, 11 de Abril 461, B8000LMI Bahia Blanca (Argentina); Dpto. de Ing. Electrica y de Computadoras, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahia Blanca (Argentina); Rossi, A.P. [Universidad Tecnologica Nacional Facultad Regional Bahia Blanca, GESE, 11 de Abril 461, B8000LMI Bahia Blanca (Argentina); Dpto. de Ing. Electrica y de Computadoras, Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahia Blanca (Argentina)

    2008-07-15

    The main problem of a wind turbine generator design project is the design of the right blades capable of satisfying the specific energy requirement of an electric system with optimum performance. Once the blade has been designed for optimum operation at a particular rotor angular speed, it is necessary to determine the overall performance of the rotor under the range of wind speed that it will encounter. A software tool that simulates low-power, horizontal-axis wind turbines was developed for this purpose. With this program, the user can calculate the rotor power output for any combination of wind and rotor speeds, with definite blade shape and airfoil characteristics. The software also provides information about distribution of forces along the blade span, for different operational conditions. (author)

  5. Quench Simulation of Superconducting Magnets with Commercial Multiphysics Software

    CERN Document Server

    AUTHOR|(SzGeCERN)751171; Auchmann, Bernhard; Jarkko, Niiranen; Maciejewski, Michal

    The simulation of quenches in superconducting magnets is a multiphysics problem of highest complexity. Operated at 1.9 K above absolute zero, the material properties of superconductors and superfluid helium vary by several orders of magnitude over a range of only 10 K. The heat transfer from metal to helium goes through different transfer and boiling regimes as a function of temperature, heat flux, and transferred energy. Electrical, magnetic, thermal, and fluid dynamic effects are intimately coupled, yet live on vastly different time and spatial scales. While the physical models may be the same in all cases, it is an open debate whether the user should opt for commercial multiphysics software like ANSYS or COMSOL, write customized models based on general purpose network solvers like SPICE, or implement the physics models and numerical solvers entirely in custom software like the QP3, THEA, and ROXIE codes currently in use at the European Organisation for Nuclear Research (CERN). Each approach has its strengt...

  6. DESIGN OF A SOFTWARE AGENT FOR BUSINESS GAMING SIMULATION

    Institute of Scientific and Technical Information of China (English)

    Yuji SHINODA; Mina RYOKE; Takao TERANO; Yoshiteru NAKAMORI

    2006-01-01

    This paper introduces a software agent as a virtual player of the business game called Bakery Game.The business game is a tool to understand business and management principles through experience in a virtual world. In order to construct software agents for the gaming simulation, which is able to participate in a game and become human players' worthy rival, we combine a simple model that considers the property of Bakery Game with a strategy adjustment model. The agent has so-called strategy parameters that are updated through the experience. The agent changes his strategy depending on particular situation. The agent participates in the game that is regenerated from log data in various situations.

  7. Dynamic simulation of residential buildings with seasonal sorption storage of solar energy - parametric analysis

    OpenAIRE

    Hennaut, Samuel; Thomas, Sébastien; Davin, Elisabeth; Andre, Philippe

    2011-01-01

    This work focuses on the evaluation of the performances of a solar combisystem coupled to seasonal thermochemical storage using SrBr2/H20 as adsorbent/adsorbate couple. The objective is to determine the characteristics required for solar system and storage reactor to reach a 100 % solar fraction for a building with a low heating load. The complete system, including the storage reactor, is simulated, using the dynamic simulation software TRNSYS. The influence of some components and p...

  8. Evolution of Software-Only-Simulation at NASA IV and V

    Science.gov (United States)

    McCarty, Justin; Morris, Justin; Zemerick, Scott

    2014-01-01

    Software-Only-Simulations have been an emerging but quickly developing field of study throughout NASA. The NASA Independent Verification Validation (IVV) Independent Test Capability (ITC) team has been rapidly building a collection of simulators for a wide range of NASA missions. ITC specializes in full end-to-end simulations that enable developers, VV personnel, and operators to test-as-you-fly. In four years, the team has delivered a wide variety of spacecraft simulations that have ranged from low complexity science missions such as the Global Precipitation Management (GPM) satellite and the Deep Space Climate Observatory (DSCOVR), to the extremely complex missions such as the James Webb Space Telescope (JWST) and Space Launch System (SLS).This paper describes the evolution of ITCs technologies and processes that have been utilized to design, implement, and deploy end-to-end simulation environments for various NASA missions. A comparison of mission simulators are discussed with focus on technology and lessons learned in complexity, hardware modeling, and continuous integration. The paper also describes the methods for executing the missions unmodified flight software binaries (not cross-compiled) for verification and validation activities.

  9. Tool Support for Parametric Analysis of Large Software Simulation Systems

    Science.gov (United States)

    Schumann, Johann; Gundy-Burlet, Karen; Pasareanu, Corina; Menzies, Tim; Barrett, Tony

    2008-01-01

    The analysis of large and complex parameterized software systems, e.g., systems simulation in aerospace, is very complicated and time-consuming due to the large parameter space, and the complex, highly coupled nonlinear nature of the different system components. Thus, such systems are generally validated only in regions local to anticipated operating points rather than through characterization of the entire feasible operational envelope of the system. We have addressed the factors deterring such an analysis with a tool to support envelope assessment: we utilize a combination of advanced Monte Carlo generation with n-factor combinatorial parameter variations to limit the number of cases, but still explore important interactions in the parameter space in a systematic fashion. Additional test-cases, automatically generated from models (e.g., UML, Simulink, Stateflow) improve the coverage. The distributed test runs of the software system produce vast amounts of data, making manual analysis impossible. Our tool automatically analyzes the generated data through a combination of unsupervised Bayesian clustering techniques (AutoBayes) and supervised learning of critical parameter ranges using the treatment learner TAR3. The tool has been developed around the Trick simulation environment, which is widely used within NASA. We will present this tool with a GN&C (Guidance, Navigation and Control) simulation of a small satellite system.

  10. Development of an engine system simulation software package - ESIM

    Energy Technology Data Exchange (ETDEWEB)

    Erlandsson, Olof

    2000-10-01

    A software package, ESIM is developed for simulating internal combustion engine systems, including models for engine, manifolds, turbocharger, charge-air cooler (inter cooler) and inlet air heater. This study focus on the thermodynamic treatment and methods used in the models. It also includes some examples of system simulations made with these models for validation purposes. The engine model can be classified as a zero-dimensional, single zone model. It includes calculation of the valve flow process, models for heat release and models for in-cylinder, exhaust port and manifold heat transfer. Models are developed for handling turbocharger performance and charge air cooler characteristics. The main purpose of the project related to this work is to use the ESIM software to study heat balance and performance of homogeneous charge compression ignition (HCCI) engine systems. A short description of the HCCI engine is therefore included, pointing out the difficulties, or challenges regarding the HCCI engine, from a system perspective. However, the relations given here, and the code itself, is quite general, making it possible to use these models to simulate spark ignited, as well as direct injected engines.

  11. Software Architecture of the NASA Shuttle Ground Operations Simulator - SGOS

    Science.gov (United States)

    Cook, Robert P.; Lostroscio, Charles T.

    2005-01-01

    The SGOS executive and its subsystems have been an integral component of the Shuttle Launch Safety Program for almost thirty years. It is usable (via the LAN) by over 2000 NASA employees at the Kennedy Space Center and 11,000 contractors. SGOS supports over 800 models comprised of several hundred thousand lines of code and over 1,000 MCP procedures. Yet neither language has a for loop!! The simulation software described in this paper is used to train ground controllers and to certify launch countdown readiness.

  12. An Approach to Building a Traceability Tool for Software Development

    Science.gov (United States)

    Delgado, Nelly; Watson, Tom

    1997-01-01

    It is difficult in a large, complex computer program to ensure that it meets the specified requirements. As the program evolves over time, a11 program constraints originally elicited during the requirements phase must be maintained. In addition, during the life cycle of the program, requirements typically change and the program must consistently reflect those changes. Imagine the following scenario. Company X wants to develop a system to automate its assembly line. With such a large system, there are many different stakeholders, e.g., managers, experts such as industrial and mechanical engineers, and end-users. Requirements would be elicited from all of the stake holders involved in the system with each stakeholder contributing their point of view to the requirements. For example, some of the requirements provided by an industrial engineer may concern the movement of parts through the assembly line. A point of view provided by the electrical engineer may be reflected in constraints concerning maximum power usage. End-users may be concerned with comfort and safety issues, whereas managers are concerned with the efficiency of the operation. With so many points of view affecting the requirements, it is difficult to manage them, communicate information to relevant stakeholders. and it is likely that conflicts in the requirements will arise. In the coding process, the implementors will make additional assumptions and interpretations on the design and the requirements of the system. During any stage of development, stakeholders may request that a requirement be added or changed. In such a dynamic environment, it is difficult to guarantee that the system will preserve the current set of requirements. Tracing, the mapping between objects in the artifacts of the system being developed, addresses this issue. Artifacts encompass documents such as the system definition, interview transcripts, memoranda, the software requirements specification, user's manuals, the functional

  13. EChOSim: The Exoplanet Characterisation Observatory software simulator

    CERN Document Server

    Pascale, E; MacTavish, C J; Papageorgiou, A; Amaral-Rogers, A; Varley, R; de Foresto, V Coudé; Griffin, M J; Ollivier, M; Sarkar, S; Spencer, L; Swinyard, B M; Tessenyi, M; Tinetti, G

    2014-01-01

    EChOSim is the end-to-end time-domain simulator of the Exoplanet Characterisation Observatory (EChO) space mission. EChOSim has been developed to assess the capability EChO has to detect and characterize the atmospheres of transiting exoplanets, and through this revolutionize the knowledge we have of the Milky Way and of our place in the Galaxy. Here we discuss the details of the EChOSim implementation and describe the models used to represent the instrument and to simulate the detection. Software simulators have assumed a central role in the design of new instrumentation and in assessing the level of systematics affecting the measurements of existing experiments. Thanks to its high modularity, EChOSim can simulate basic aspects of several existing and proposed spectrometers for exoplanet transits, including instruments on the Hubble Space Telescope and Spitzer, or ground-based and balloon borne experiments. A discussion of different uses of EChOSim is given, including examples of simulations performed to ass...

  14. Method for simulating predictive control of building systems operation in the early stages of building design

    DEFF Research Database (Denmark)

    Petersen, Steffen; Svendsen, Svend

    2011-01-01

    A method for simulating predictive control of building systems operation in the early stages of building design is presented. The method uses building simulation based on weather forecasts to predict whether there is a future heating or cooling requirement. This information enables the thermal...... control systems of the building to respond proactively to keep the operational temperature within the thermal comfort range with the minimum use of energy. The method is implemented in an existing building simulation tool designed to inform decisions in the early stages of building design through...... parametric analysis. This enables building designers to predict the performance of the method and include it as a part of the solution space. The method furthermore facilitates the task of configuring appropriate building systems control schemes in the tool, and it eliminates time consuming manual...

  15. The nightly build and test system for LCG AA and LHCb software

    CERN Document Server

    Kruzelecki, K; Degaudenzi, H

    2010-01-01

    The core software stack both from the LCG Application Area and LHCb consists of more than 25 C++/Fortran/Python projects build for about 20 different configurations on Linux, Windows and MacOSX. To these projects, one can also add about 70 external software packages (Boost, Python, Qt, CLHEP, ...) which have also to be build for the same configurations. It order to reduce the time of the development cycle and increase the quality insurance, a framework has been developed for the daily (nightly actually) build and test of the software. Performing the build and the tests on several configurations and platform allows to increase the efficiency of the unit and integration tests. Main features: - flexible and fine grained setup (full, partial build) through a web interface; - possibility to build several “slots” with different configurations; - precise and highly granular reports on a web server; - support for CMT projects (but not only) with their cross-dependencies; - scalable client-server architecture for ...

  16. LHCb: The nightly build and test system for LCG AA and LHCb software

    CERN Multimedia

    Kruzelecki, K; Degaudenzi, H

    2009-01-01

    The core software stack both from the LCG Application Area and LHCb consists of more than 25 C++/Fortran/Python projects build for about 20 different configurations on Linux, Windows and MacOSX. To these projects, one can also add about 20 external software packages (Boost, Python, Qt, CLHEP, ...) which have also to be build for the same configurations. It order to reduce the time of the development cycle and increase the quality insurance, a framework has been developed for the daily (nightly actually) build and test of the software. Performing the build and the tests on several configurations and platform allows to increase the efficiency of the unit and integration tests. Main features: - flexible and fine grained setup (full, partial build) through a web interface - possibility to build several "slots" with different configurations - precise and highly granular reports on a web server - support for CMT projects (but not only) with their cross-dependencies. - scalable client -server architecture for the co...

  17. OpenSim: open-source software to create and analyze dynamic simulations of movement.

    Science.gov (United States)

    Delp, Scott L; Anderson, Frank C; Arnold, Allison S; Loan, Peter; Habib, Ayman; John, Chand T; Guendelman, Eran; Thelen, Darryl G

    2007-11-01

    Dynamic simulations of movement allow one to study neuromuscular coordination, analyze athletic performance, and estimate internal loading of the musculoskeletal system. Simulations can also be used to identify the sources of pathological movement and establish a scientific basis for treatment planning. We have developed a freely available, open-source software system (OpenSim) that lets users develop models of musculoskeletal structures and create dynamic simulations of a wide variety of movements. We are using this system to simulate the dynamics of individuals with pathological gait and to explore the biomechanical effects of treatments. OpenSim provides a platform on which the biomechanics community can build a library of simulations that can be exchanged, tested, analyzed, and improved through a multi-institutional collaboration. Developing software that enables a concerted effort from many investigators poses technical and sociological challenges. Meeting those challenges will accelerate the discovery of principles that govern movement control and improve treatments for individuals with movement pathologies. PMID:18018689

  18. Software Development Processes Applied to Computational Icing Simulation

    Science.gov (United States)

    Levinson, Laurie H.; Potapezuk, Mark G.; Mellor, Pamela A.

    1999-01-01

    The development of computational icing simulation methods is making the transition form the research to common place use in design and certification efforts. As such, standards of code management, design validation, and documentation must be adjusted to accommodate the increased expectations of the user community with respect to accuracy, reliability, capability, and usability. This paper discusses these concepts with regard to current and future icing simulation code development efforts as implemented by the Icing Branch of the NASA Lewis Research Center in collaboration with the NASA Lewis Engineering Design and Analysis Division. With the application of the techniques outlined in this paper, the LEWICE ice accretion code has become a more stable and reliable software product.

  19. A supernova feedback implementation for the astrophysical simulation software Arepo

    CERN Document Server

    Bubel, André-Patrick

    2016-01-01

    Supernova (SN) explosions play an important role in the development of galactic structures. The energy and momentum imparted on the interstellar medium (ISM) in so called "supernova feedback" drives turbulence, heats the gas, enriches it with heavy elements, can lead to the formation of new stars or even suppress star formation by disrupting stellar nurseries. In the numerical simulation at the sub-galactic level, not including the energy and momentum of supernovas in the physical description of the problem can also lead to several problems that might partially be resolved by including a description of supernovas. In this thesis such an implementation is attempted for the combined numerical hydrodynamics and N-body simulation software Arepo (Springel, 2010). In a stochastic process a large amount of thermal energy is imparted on a number of neighbouring cells, mimicking the effect of a supernova explosions. We test this approach by modelling the explosion of a single supernova in a uniform density medium and ...

  20. Cronos 2: a neutronic simulation software for reactor core calculations

    International Nuclear Information System (INIS)

    The CRONOS2 software is that part of the SAPHYR code system dedicated to neutronic core calculations. CRONOS2 is a powerful tool for reactor design, fuel management and safety studies. Its modular structure and great flexibility make CRONOS2 an unique simulation tool for research and development for a wide variety of reactor systems. CRONOS2 is a versatile tool that covers a large range of applications from very fast calculations used in training simulators to time and memory consuming reference calculations needed to understand complex physical phenomena. CRONOS2 has a procedure library named CPROC that allows the user to create its own application environment fitted to a specific industrial use. (authors)

  1. Hardware Software co-simulation for Image Processing Applications

    Directory of Open Access Journals (Sweden)

    A.C.Suthar

    2012-03-01

    Full Text Available We proposed the concept of hardware software co-simulation for image processing using Xilinx system generator. Recent advances in synthesis tools for SIMULINK suggest a feasible high-level approach to algorithm implementation for embedded DSP systems. An efficient FPGA based hardware design for enhancement of color and grey scale images in image and video processing. The top model - based visual development process of SIMULINK facilitates host side simulation and validation, as well as synthesis of target specific code, furthermore, legacy code written in MATLAB or ANCI C can be reuse in custom blocks. However, the code generated for DSP platforms is often not very efficient. We are implemented the Image processing applications on FPGA it can be easily design

  2. Bega - Android-Based Beergame Simulation Software for Interactive Training and Innovation

    Science.gov (United States)

    Lestyánszka Škůrková, Katarína; Szander, Norina

    2013-12-01

    The supply chain management challenges and inventory holding problems can easily be demonstrated by the widely known BeerGame simulation. In the Szabó-Szoba R&D Laboratory, we developed an android-based software application for tablets and smart phones for the purpose of having an adaptable, entertaining and effective program which can provide a real life experience to the participants about the nature of the bullwhip effect. Having an appropriate and comprehensive performance measurement system with the critical parameters and KPIs is inevitable for finding the right solutions - We used four perspectives of the Balanced Scorecard method. The innovative force of our research is based on the trainings: the discussion on outcomes and the team learning. The purpose of the current development is to build a new feature in the software: an artificial client can substitute one or more players in the supply chain, which makes decisions by using genetic algorithms.

  3. Computational Fluid Dynamics and Building Energy Performance Simulation

    DEFF Research Database (Denmark)

    Nielsen, Peter V.; Tryggvason, Tryggvi

    An interconnection between a building energy performance simulation program and a Computational Fluid Dynamics program (CFD) for room air distribution will be introduced for improvement of the predictions of both the energy consumption and the indoor environment. The building energy performance...... simulation program requires a detailed description of the energy flow in the air movement which can be obtained by a CFD program. The paper describes an energy consumption calculation in a large building, where the building energy simulation program is modified by CFD predictions of the flow between three...... program and a building energy performance simulation program will improve both the energy consumption data and the prediction of thermal comfort and air quality in a selected area of the building....

  4. Co-simulation of innovative integrated HVAC systems in buildings

    Energy Technology Data Exchange (ETDEWEB)

    Trcka, Marija; Hensena, Jan L.M.; Wetter, Michael

    2010-06-21

    Integrated performance simulation of buildings HVAC systems can help in reducing energy consumption and increasing occupant comfort. However, no single building performance simulation (BPS) tool offers sufficient capabilities and flexibilities to analyze integrated building systems and to enable rapid prototyping of innovative building and system technologies. One way to alleviate this problem is to use co-simulation, as an integrated approach to simulation. This article elaborates on issues important for co-simulation realization and discusses multiple possibilities to justify the particular approach implemented in the here described co-simulation prototype. The prototype is validated with the results obtained from the traditional simulation approach. It is further used in a proof-of-concept case study to demonstrate the applicability of the method and to highlight its benefits. Stability and accuracy of different coupling strategies are analyzed to give a guideline for the required coupling time step.

  5. Draught risk index tool for building energy simulations

    DEFF Research Database (Denmark)

    Vorre, Mette Havgaard; Jensen, Rasmus Lund; Nielsen, Peter V.

    2014-01-01

    Flow elements combined with a building energy simulation tool can be used to indicate areas and periods when there is a risk of draught in a room. The study tests this concept by making a tool for post-processing of data from building energy simulations. The objective is to show indications...

  6. Learning in a landscape : Simulation-building as reflexive intervention

    NARCIS (Netherlands)

    Beaulieu, Anne; Ratto, Matt; Scharnhorst, Andrea

    2013-01-01

    This article makes a dual contribution to scholarship in science and technology studies (STS) on simulation-building. It both documents a specific simulation-building project, and demonstrates a concrete contribution to interdisciplinary work of STS insights. The article analyses the struggles that

  7. Improving the Accuracy of Software-Based Energy Analysis for Residential Buildings (Presentation)

    Energy Technology Data Exchange (ETDEWEB)

    Polly, B.

    2011-09-01

    This presentation describes the basic components of software-based energy analysis for residential buildings, explores the concepts of 'error' and 'accuracy' when analysis predictions are compared to measured data, and explains how NREL is working to continuously improve the accuracy of energy analysis methods.

  8. Building a cooperative digital libary with open source software - the case of CLACSO in Latin America

    OpenAIRE

    Babini, Dominique

    2006-01-01

    Description of why and how the Latin American Social Science Council (CLACSO-Consejo Latinoamericano de Ciencias Sociales) has developed a cooperative digital library with open source Greenstone software, to build digital collections for its member institutes in 21 countries of Latin America and the Caribbean

  9. Monte Carlo simulation with the Gate software using grid computing

    International Nuclear Information System (INIS)

    Monte Carlo simulations are widely used in emission tomography, for protocol optimization, design of processing or data analysis methods, tomographic reconstruction, or tomograph design optimization. Monte Carlo simulations needing many replicates to obtain good statistical results can be easily executed in parallel using the 'Multiple Replications In Parallel' approach. However, several precautions have to be taken in the generation of the parallel streams of pseudo-random numbers. In this paper, we present the distribution of Monte Carlo simulations performed with the GATE software using local clusters and grid computing. We obtained very convincing results with this large medical application, thanks to the EGEE Grid (Enabling Grid for E-science), achieving in one week computations that could have taken more than 3 years of processing on a single computer. This work has been achieved thanks to a generic object-oriented toolbox called DistMe which we designed to automate this kind of parallelization for Monte Carlo simulations. This toolbox, written in Java is freely available on SourceForge and helped to ensure a rigorous distribution of pseudo-random number streams. It is based on the use of a documented XML format for random numbers generators statuses. (authors)

  10. Building interactive simulations in a Web page design program.

    Science.gov (United States)

    Kootsey, J Mailen; Siriphongs, Daniel; McAuley, Grant

    2004-01-01

    A new Web software architecture, NumberLinX (NLX), has been integrated into a commercial Web design program to produce a drag-and-drop environment for building interactive simulations. NLX is a library of reusable objects written in Java, including input, output, calculation, and control objects. The NLX objects were added to the palette of available objects in the Web design program to be selected and dropped on a page. Inserting an object in a Web page is accomplished by adding a template block of HTML code to the page file. HTML parameters in the block must be set to user-supplied values, so the HTML code is generated dynamically, based on user entries in a popup form. Implementing the object inspector for each object permits the user to edit object attributes in a form window. Except for model definition, the combination of the NLX architecture and the Web design program permits construction of interactive simulation pages without writing or inspecting code. PMID:17271495

  11. Software in the DOE: The Hidden Overhead of''The Build''

    Energy Technology Data Exchange (ETDEWEB)

    Kumfert, G; Epperly, T

    2002-02-28

    ''The Build'' is the infrastructure needed to convert software from source code to usable form. It is intimately tied to the software it supports, knowing about every file and automating every transformation needed to produce a working program. Every developer knows that a project spends some labor overhead on ''the build.'' How big is this hidden overhead? According to 34 scientific software developers we surveyed at Lawrence Livermore National Labs, among colleagues at other DOE labs, and a handful of academics the ''perceived'' overhead averages around 12%. Individual cases of 20% to 30% were not uncommon. In one project claiming a 20% overhead, we found supporting evidence by combing through their CVS repository.

  12. Building the Scientific Modeling Assistant: An interactive environment for specialized software design

    Science.gov (United States)

    Keller, Richard M.

    1991-01-01

    The construction of scientific software models is an integral part of doing science, both within NASA and within the scientific community at large. Typically, model-building is a time-intensive and painstaking process, involving the design of very large, complex computer programs. Despite the considerable expenditure of resources involved, completed scientific models cannot easily be distributed and shared with the larger scientific community due to the low-level, idiosyncratic nature of the implemented code. To address this problem, we have initiated a research project aimed at constructing a software tool called the Scientific Modeling Assistant. This tool provides automated assistance to the scientist in developing, using, and sharing software models. We describe the Scientific Modeling Assistant, and also touch on some human-machine interaction issues relevant to building a successful tool of this type.

  13. Towards the Significance of Decision Aid in Building Information Modeling (BIM Software Selection Process

    Directory of Open Access Journals (Sweden)

    Omar Mohd Faizal

    2014-01-01

    Full Text Available Building Information Modeling (BIM has been considered as a solution in construction industry to numerous problems such as delays, increased lead in times and increased costs. This is due to the concept and characteristic of BIM that will reshaped the way construction project teams work together to increase productivity and improve the final project outcomes (cost, time, quality, safety, functionality, maintainability, etc.. As a result, the construction industry has witnesses numerous of BIM software available in market. Each of this software has offers different function, features. Furthermore, the adoption of BIM required high investment on software, hardware and also training expenses. Thus, there is indentified that there is a need of decision aid for appropriated BIM software selection that fulfill the project needs. However, research indicates that there is limited study attempt to guide decision in BIM software selection problem. Thus, this paper highlight the importance of decision making and support for BIM software selection as it is vital to increase productivity, construction project throughout building lifecycle.

  14. SIMODIS - a software package for simulating nuclear reactor components

    International Nuclear Information System (INIS)

    In this paper it is presented the initial development effort in building a nuclear reactor component simulation package. This package was developed to be used in the MATLAB simulation environment. It uses the graphical capabilities from MATLAB and the advantages of compiled languages, as for instance FORTRAN and C++. From the MATLAB it takes the facilities for better displaying the calculated results. From the compiled languages it takes processing speed. So far models from reactor core, UTSG and OTSG have been developed. Also, a series a user-friendly graphical interfaces have been developed for the above models. As a by product a set of water and sodium thermal and physical properties have been developed and may be used directly as a function from MATLAB, or by being called from a model, as part of its calculation process. The whole set was named SIMODIS, which stands for SIstema MODular Integrado de Simulacao. (author)

  15. SIMODIS - a software package for simulating nuclear reactor components

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, Lamartine; Borges, Eduardo M. [Centro Tecnico Aeroespacial (CTA-IEAv), Sao Jose dos Campos, SP (Brazil). Inst. de Estudos Avancados. E-mail: guimarae@ieav.cta.br; Oliveira Junior, Nilton S.; Santos, Glauco S.; Bueno, Mariana F. [Universidade Bras Cubas, Mogi das Cruzes, SP (Brazil)

    2000-07-01

    In this paper it is presented the initial development effort in building a nuclear reactor component simulation package. This package was developed to be used in the MATLAB simulation environment. It uses the graphical capabilities from MATLAB and the advantages of compiled languages, as for instance FORTRAN and C{sup ++}. From the MATLAB it takes the facilities for better displaying the calculated results. From the compiled languages it takes processing speed. So far models from reactor core, UTSG and OTSG have been developed. Also, a series a user-friendly graphical interfaces have been developed for the above models. As a by product a set of water and sodium thermal and physical properties have been developed and may be used directly as a function from MATLAB, or by being called from a model, as part of its calculation process. The whole set was named SIMODIS, which stands for SIstema MODular Integrado de Simulacao. (author)

  16. Validation of the mean radiant temperature simulated by the RayMan software in urban environments

    Science.gov (United States)

    Lee, Hyunjung; Mayer, Helmut

    2016-04-01

    The RayMan software is worldwide applied in investigations on different issues in human-biometeorology. However, only the simulated mean radiant temperature (T mrt) has been validated so far in a few case studies. They are based on T mrt values, which were experimentally determined in urban environments by use of a globe thermometer or applying the six-directional method. This study analyses previous T mrt validations in a comparative manner. Their results are extended by a recent validation of T mrt in an urban micro-environment in Freiburg (southwest Germany), which can be regarded as relatively heterogeneous due to different shading intensities by tree crowns. In addition, a validation of the physiologically equivalent temperature (PET) simulated by RayMan is conducted for the first time. The validations are based on experimentally determined T mrt and PET values, which were calculated from measured meteorological variables in the daytime of a clear-sky summer day. In total, the validation results show that RayMan is capable of simulating T mrt satisfactorily under relatively homogeneous site conditions. However, the inaccuracy of simulated T mrt is increasing with lower sun elevation and growing heterogeneity of the simulation site. As T mrt represents the meteorological variable that mostly governs PET in the daytime of clear-sky summer days, the accuracy of simulated T mrt is mainly responsible for the accuracy of simulated PET. The T mrt validations result in some recommendations, which concern an update of physical principles applied in the RayMan software to simulate the short- and long-wave radiant flux densities, especially from vertical building walls and tree crowns.

  17. Integration of Building energy and energy supply simulations for low-energy district heating supply to energy-efficient buildings

    DEFF Research Database (Denmark)

    Dalla Rosa, Alessandro

    2012-01-01

    of the human behaviour regarding the building and link the results to the simulation program for DH networks. The results show that human behaviour can lead to 50% higher heating demand and 60% higher peak loads than expected according to reference values in standardized calculation of energy demand....... The analysis also shows that the connection of low-energy buildings to DH networks is potentially a good solution in Denmark for reaching the climatic goals, but a high degree of connection must be reached, especially for detached houses, where most of the buildings in a typical community must be connected......The future will demand implementation of C02 neutral communities, the consequences being a far more complex design of the whole energy system, since the future energy infrastructures will be dynamic and climate responsive systems. Software able to work with such level of complexity is at present...

  18. Building and HVAC optimal control simulation. Application to an office building.

    OpenAIRE

    Kummert, Michaël; Andre, Philippe; Nicolas, Jacques

    1999-01-01

    This paper describes the methodology to apply discrete-time optimal control to a building and its HVAC installation. Simulation-based results concerning a passive solar commercial building are presented and discussed. The simulation environment includes the TRNSYS TYPE 56 as reference building model and HVAC detailed models to test the controller with realistic control signals. The optimal controller's sensitivity to meteorological forecasting quality and to other factors is analy...

  19. Nmag micromagnetic simulation tool - software engineering lessons learned

    CERN Document Server

    Fangohr, Hans; Franchin, Matteo

    2016-01-01

    We review design decisions and their impact for the open source code Nmag from a software engineering in computational science point of view. Key lessons to learn include that the approach of encapsulating the simulation functionality in a library of a general purpose language, here Python, eliminates the need for configuration files, provides greatest flexibility in using the simulation, allows mixing of multiple simulations, pre- and post-processing in the same (Python) file, and allows to benefit from the rich Python ecosystem of scientific packages. The choice of programming language (OCaml) for the computational core did not resonate with the users of the package (who are not computer scientists) and was suboptimal. The choice of Python for the top-level user interface was very well received by users from the science and engineering community. The from-source installation in which key requirements were compiled from a tarball was remarkably robust. In places, the code is a lot more ambitious than necessa...

  20. Solving the Job-Shop Scheduling Problem by Arena Simulation Software

    Directory of Open Access Journals (Sweden)

    Prof. Dr. Gamal M. Nawara

    2013-04-01

    Full Text Available The job-Shop Scheduling problem (JSSP attracted a lot of researchers from various research disciplines, mainly Operations Research, Management Science, Computer Science, and Manufacture Science for the last 50 years. JSSP is a typical NP-hard problem in the strong sense. Although the literature is full of researches concerning the JSSP, practitioners are not able to get benefit of the majority of these researches because of the assumptions which take the problem very far away from the real life JSSP. The aim of our research is to build a simulation model for the JSSP to be able to relax some of these assumptions to simulate the real life JSSP. We used discrete event simulation as it's suitable for the JSSP. We used Arena simulation software version 14 to build the model on a Dell® Vostro PC (Intel® Core(TM i5–2400 CPU @ 3.10GHZ with 4 GB RAM.In this paper we will just show the basic model which is able to solve the famous benchmarks for the JSSP to prove that our model is ready for the real life JSSP. In the following papers we will show how to relax some of these assumptions one by one. The computational results for 9 benchmarks of different sizes showed that the proposed model is both effective and efficient. It gave good solutions in reasonable amounts of time.

  1. Software for Quantifying and Simulating Microsatellite Genotyping Error

    Directory of Open Access Journals (Sweden)

    Paul C.D. Johnson

    2007-01-01

    Full Text Available Microsatellite genetic marker data are exploited in a variety of fields, including forensics, gene mapping, kinship inference and population genetics. In all of these fields, inference can be thwarted by failure to quantify and account for data errors, and kinship inference in particular can benefit from separating errors into two distinct classes: allelic dropout and false alleles. Pedant is MS Windows software for estimating locus-specific maximum likelihood rates of these two classes of error. Estimation is based on comparison of duplicate error-prone genotypes: neither reference genotypes nor pedigree data are required. Other functions include: plotting of error rate estimates and confidence intervals; simulations for performing power analysis and for testing the robustness of error rate estimates to violation of the underlying assumptions; and estimation of expected heterozygosity, which is a required input. The program, documentation and source code are available from http://www.stats.gla.ac.uk/~paulj/pedant.html.

  2. Autonomous Cryogenics Loading Operations Simulation Software: Knowledgebase Autonomous Test Engineer

    Science.gov (United States)

    Wehner, Walter S., Jr.

    2013-01-01

    Working on the ACLO (Autonomous Cryogenics Loading Operations) project I have had the opportunity to add functionality to the physics simulation software known as KATE (Knowledgebase Autonomous Test Engineer), create a new application allowing WYSIWYG (what-you-see-is-what-you-get) creation of KATE schematic files and begin a preliminary design and implementation of a new subsystem that will provide vision services on the IHM (Integrated Health Management) bus. The functionality I added to KATE over the past few months includes a dynamic visual representation of the fluid height in a pipe based on number of gallons of fluid in the pipe and implementing the IHM bus connection within KATE. I also fixed a broken feature in the system called the Browser Display, implemented many bug fixes and made changes to the GUI (Graphical User Interface).

  3. Simulations of Dense Stellar Systems with the AMUSE Software Toolkit

    CERN Document Server

    McMillan, Stephen; van Elteren, Arjen; Whitehead, Alfred

    2011-01-01

    We describe AMUSE, the Astrophysical Multipurpose Software Environment, a programming framework designed to manage multi-scale, multi-physics simulations in a hierarchical, extensible, and internally consistent way. Constructed as a collection of individual modules, AMUSE allows computational tools for different physical domains to be easily combined into a single task. It facilitates the coupling of modules written in different languages by providing inter-language tools and a standard programming interface that represents a balance between generality and computational efficiency. The framework currently incorporates the domains of stellar dynamics, stellar evolution, gas dynamics, and radiative transfer. We present some applications of the framework and outline plans for future development of the package.

  4. Validation process of ISIS CFD software for fire simulation

    Energy Technology Data Exchange (ETDEWEB)

    Lapuerta, C., E-mail: celine.lapuerta@irsn.fr [Institut de Radioprotection et de Surete Nucleaire (IRSN), BP3, 13115 Saint Paul-lez-Durance (France); ETIC Laboratory, IRSN-CNRS-UAM (I,II), 5 rue Enrico Fermi, 13453 Marseille Cedex 13 (France); Suard, S., E-mail: sylvain.suard@irsn.fr [Institut de Radioprotection et de Surete Nucleaire (IRSN), BP3, 13115 Saint Paul-lez-Durance (France); ETIC Laboratory, IRSN-CNRS-UAM (I,II), 5 rue Enrico Fermi, 13453 Marseille Cedex 13 (France); Babik, F., E-mail: fabrice.babik@irsn.fr [Institut de Radioprotection et de Surete Nucleaire (IRSN), BP3, 13115 Saint Paul-lez-Durance (France); Rigollet, L., E-mail: laurence.rigollet@irsn.fr [Institut de Radioprotection et de Surete Nucleaire (IRSN), BP3, 13115 Saint Paul-lez-Durance (France); ETIC Laboratory, IRSN-CNRS-UAM (I,II), 5 rue Enrico Fermi, 13453 Marseille Cedex 13 (France)

    2012-12-15

    Fire propagation constitutes a major safety concern in nuclear facilities. In this context, IRSN is developing a CFD code, named ISIS, dedicated to fire simulations. This software is based on a coherent set of models that can be used to describe a fire in large, mechanically ventilated compartments. The system of balance equations obtained by combining these models is discretized in time using fractional step methods, including a pressure correction technique for solving hydrodynamic equations. Discretization in space combines two techniques, each proven in the relevant context: mixed finite elements for hydrodynamic equations and finite volumes for transport equations. ISIS is currently in an advanced stage of verification and validation. The results obtained for a full-scale fire test performed at IRSN are presented.

  5. Promising synergies of simulation model management, software engineering, artificial intelligence, and general system theories

    Energy Technology Data Exchange (ETDEWEB)

    Oren, T.I.

    1982-01-01

    Simulation is viewed within the model management paradigm. Major components of simulation systems as well as elements of model management are outlined. Possible synergies of simulation model management, software engineering, artificial intelligence, and general system theories are systematized. 21 references.

  6. EON: software for long time simulations of atomic scale systems

    International Nuclear Information System (INIS)

    The EON software is designed for simulations of the state-to-state evolution of atomic scale systems over timescales greatly exceeding that of direct classical dynamics. States are defined as collections of atomic configurations from which a minimization of the potential energy gives the same inherent structure. The time evolution is assumed to be governed by rare events, where transitions between states are uncorrelated and infrequent compared with the timescale of atomic vibrations. Several methods for calculating the state-to-state evolution have been implemented in EON, including parallel replica dynamics, hyperdynamics and adaptive kinetic Monte Carlo. Global optimization methods, including simulated annealing, basin hopping and minima hopping are also implemented. The software has a client/server architecture where the computationally intensive evaluations of the interatomic interactions are calculated on the client-side and the state-to-state evolution is managed by the server. The client supports optimization for different computer architectures to maximize computational efficiency. The server is written in Python so that developers have access to the high-level functionality without delving into the computationally intensive components. Communication between the server and clients is abstracted so that calculations can be deployed on a single machine, clusters using a queuing system, large parallel computers using a message passing interface, or within a distributed computing environment. A generic interface to the evaluation of the interatomic interactions is defined so that empirical potentials, such as in LAMMPS, and density functional theory as implemented in VASP and GPAW can be used interchangeably. Examples are given to demonstrate the range of systems that can be modeled, including surface diffusion and island ripening of adsorbed atoms on metal surfaces, molecular diffusion on the surface of ice and global structural optimization of nanoparticles

  7. A Modeling Language Based on UML for Modeling Simulation Testing System of Avionic Software

    Institute of Scientific and Technical Information of China (English)

    WANG Lize; LIU Bin; LU Minyan

    2011-01-01

    With direct expression of individual application domain patterns and ideas, domain-specific modeling language (DSML) is more and more frequently used to build models instead of using a combination of one or more general constructs. Based on the profile mechanism of unified modeling language (UML) 2.2, a kind of DSML is presented to model simulation testing systems of avionic software (STSAS). To define the syntax, semantics and notions of the DSML, the domain model of the STSAS from which we generalize the domain concepts and relationships among these concepts is given, and then, the domain model is mapped into a UML meta-model, named UML-STSAS profile. Assuming a flight control system (FCS) as system under test (SUT), we design the relevant STSAS. The results indicate that extending UML to the simulation testing domain can effectively and precisely model STSAS.

  8. FDSAC-SPICE: fault diagnosis software for analog circuit based on SPICE simulation

    Science.gov (United States)

    Cao, Yiqin; Cen, Zhao-Hui; Wei, Jiao-Long

    2009-12-01

    This paper presents a novel fault diagnosis software (called FDSAC-SPICE) based on SPICE simulator for analog circuits. Four important techniques in AFDS-SPICE, including visual user-interface(VUI), component modeling and fault modeling (CMFM), fault injection and fault simulation (FIFS), fault dictionary and fault diagnosis (FDFD), greatly increase design-for-test and diagnosis efficiency of analog circuit by building a fault modeling-injection-simulationdiagnosis environment to get prior fault knowledge of target circuit. AFDS-SPICE also generates accurate fault coverage statistics that are tied to the circuit specifications. With employing a dictionary diagnosis method based on node-signalcharacters and regular BPNN algorithm, more accurate and effective diagnosis results are available for analog circuit with tolerance.

  9. Sandia National Laboratories Advanced Simulation and Computing (ASC) software quality plan : ASC software quality engineering practices Version 3.0.

    Energy Technology Data Exchange (ETDEWEB)

    Turgeon, Jennifer L.; Minana, Molly A.; Hackney, Patricia; Pilch, Martin M.

    2009-01-01

    The purpose of the Sandia National Laboratories (SNL) Advanced Simulation and Computing (ASC) Software Quality Plan is to clearly identify the practices that are the basis for continually improving the quality of ASC software products. Quality is defined in the US Department of Energy/National Nuclear Security Agency (DOE/NNSA) Quality Criteria, Revision 10 (QC-1) as 'conformance to customer requirements and expectations'. This quality plan defines the SNL ASC Program software quality engineering (SQE) practices and provides a mapping of these practices to the SNL Corporate Process Requirement (CPR) 001.3.6; 'Corporate Software Engineering Excellence'. This plan also identifies ASC management's and the software project teams responsibilities in implementing the software quality practices and in assessing progress towards achieving their software quality goals. This SNL ASC Software Quality Plan establishes the signatories commitments to improving software products by applying cost-effective SQE practices. This plan enumerates the SQE practices that comprise the development of SNL ASC's software products and explains the project teams opportunities for tailoring and implementing the practices.

  10. Effective UI The Art of Building Great User Experience in Software

    CERN Document Server

    Anderson, Jonathan; Wilson, Robb

    2010-01-01

    People expect effortless, engaging interaction with desktop and web applications, but producing software that generates enjoyable user experiences is much harder than many companies anticipate. With Effective UI, you'll learn proven user-experience strategies that will satisfy your clients and customers, drive business value, and increase brand strength. This book shows you how to capture the collaborative and cooperative spirit among designers, engineers, and management required for building engaging software. You'll also learn valuable methods for maintaining focus throughout the process -

  11. Software-Defined Solutions for Managing Energy Use in Small to Medium Sized Commercial Buildings

    Energy Technology Data Exchange (ETDEWEB)

    Peffer, Therese [Univ. of California, Berkeley, CA (United States); Council on International Education Exchange (CIEE), Portland, ME (United States); Blumstein, Carl [Council on International Education Exchange (CIEE), Portland, ME (United States); Culler, David [Univ. of California, Berkeley, CA (United States). Electrical Engineering and Computer Sciences (EECS); Modera, Mark [Univ. of California, Davis, CA (United States). Western Cooling Efficiency Center (WCEC); Meier, Alan [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    2015-09-10

    The Project uses state-of-the-art computer science to extend the benefits of Building Automation Systems (BAS) typically found in large buildings (>100,000 square foot) to medium-sized commercial buildings (<50,000 sq ft). The BAS developed in this project, termed OpenBAS, uses an open-source and open software architecture platform, user interface, and plug-and-play control devices to facilitate adoption of energy efficiency strategies in the commercial building sector throughout the United States. At the heart of this “turn key” BAS is the platform with three types of controllers—thermostat, lighting controller, and general controller—that are easily “discovered” by the platform in a plug-and-play fashion. The user interface showcases the platform and provides the control system set-up, system status display and means of automatically mapping the control points in the system.

  12. Building a Snow Data Management System using Open Source Software (and IDL)

    Science.gov (United States)

    Goodale, C. E.; Mattmann, C. A.; Ramirez, P.; Hart, A. F.; Painter, T.; Zimdars, P. A.; Bryant, A.; Brodzik, M.; Skiles, M.; Seidel, F. C.; Rittger, K. E.

    2012-12-01

    At NASA's Jet Propulsion Laboratory free and open source software is used everyday to support a wide range of projects, from planetary to climate to research and development. In this abstract I will discuss the key role that open source software has played in building a robust science data processing pipeline for snow hydrology research, and how the system is also able to leverage programs written in IDL, making JPL's Snow Data System a hybrid of open source and proprietary software. Main Points: - The Design of the Snow Data System (illustrate how the collection of sub-systems are combined to create a complete data processing pipeline) - Discuss the Challenges of moving from a single algorithm on a laptop, to running 100's of parallel algorithms on a cluster of servers (lesson's learned) - Code changes - Software license related challenges - Storage Requirements - System Evolution (from data archiving, to data processing, to data on a map, to near-real-time products and maps) - Road map for the next 6 months (including how easily we re-used the snowDS code base to support the Airborne Snow Observatory Mission) Software in Use and their Software Licenses: IDL - Used for pre and post processing of data. Licensed under a proprietary software license held by Excelis. Apache OODT - Used for data management and workflow processing. Licensed under the Apache License Version 2. GDAL - Geospatial Data processing library used for data re-projection currently. Licensed under the X/MIT license. GeoServer - WMS Server. Licensed under the General Public License Version 2.0 Leaflet.js - Javascript web mapping library. Licensed under the Berkeley Software Distribution License. Python - Glue code and miscellaneous data processing support. Licensed under the Python Software Foundation License. Perl - Script wrapper for running the SCAG algorithm. Licensed under the General Public License Version 3. PHP - Front-end web application programming. Licensed under the PHP License Version

  13. Simulation Based Studies in Software Engineering: A Matter of Validity

    Directory of Open Access Journals (Sweden)

    Breno Bernard Nicolau de França

    2015-04-01

    Full Text Available Despite the possible lack of validity when compared with other science areas, Simulation-Based Studies (SBS in Software Engineering (SE have supported the achievement of some results in the field. However, as it happens with any other sort of experimental study, it is important to identify and deal with threats to validity aiming at increasing their strength and reinforcing results confidence. OBJECTIVE: To identify potential threats to SBS validity in SE and suggest ways to mitigate them. METHOD: To apply qualitative analysis in a dataset resulted from the aggregation of data from a quasi-systematic literature review combined with ad-hoc surveyed information regarding other science areas. RESULTS: The analysis of data extracted from 15 technical papers allowed the identification and classification of 28 different threats to validity concerned with SBS in SE according Cook and Campbell’s categories. Besides, 12 verification and validation procedures applicable to SBS were also analyzed and organized due to their ability to detect these threats to validity. These results were used to make available an improved set of guidelines regarding the planning and reporting of SBS in SE. CONCLUSIONS: Simulation based studies add different threats to validity when compared with traditional studies. They are not well observed and therefore, it is not easy to identify and mitigate all of them without explicit guidance, as the one depicted in this paper.

  14. PID controller simulator software for DC motor of gamma scanning

    International Nuclear Information System (INIS)

    Mostly PID controller (Proportional-Integral-Derivative) has been used in industry. For certain applications, it can be used as a Proportional (P) model only, or as a Proportional-Integral (PI) model. The aim of this paper is to design a PID controller simulator software for DC motor which is used in gamma scanning system. A DC motor is described as a plant of SISO (Single Input Single Output) which is used for pulling down the load (detector + casing) and gamma radiation source (Co-60 + container) by using sling cable. A DC motor consist of an armature and a rotor, the equivalent circuit of DC motor is shown in a transfer function equation between output parameter (angular speed DC motor) and input parameter (voltage of DC motor). Methods used for the process of PID controller design is to arrange the PID controller parameter (Kc, Ti, Td) so that there are more PID controller transfer function model which are able to control angular speed of DC motor in stable condition, as design criteria requirement is needed. Design criteria requirement for control system are the settling time < 3 second, overshoot < 5%, rise time = 0.25 second, steady state gain = 1 and peak time < 3 second with step response reference 1 rad/second. The result of simulation gives several models of PID controller in function transfer equation which is similar with design criteria requirement in a equation of function transfer of order 2 for numerator and order 1 for denominator. (author)

  15. Building energy demand aggregation and simulation tools

    DEFF Research Database (Denmark)

    Gianniou, Panagiota; Heller, Alfred; Rode, Carsten

    2015-01-01

    Nowadays, the minimization of energy consumption and the optimization of efficiency of the overall energy grid have been in the agenda of most national and international energy policies. At the same time, urbanization has put cities under the microscope towards achieving cost-effective energy...... savings due to their compact and highly dense form. Thus, accurate estimation of energy demand of cities is of high importance to policy-makers and energy planners. This calls for automated methods that can be easily expandable to higher levels of aggregation, ranging from clusters of buildings...... to neighbourhoods and cities. Buildings occupy a key place in the development of smart cities as they represent an important potential to integrate smart energy solutions. Building energy consumption affects significantly the performance of the entire energy network. Therefore, a realistic estimation...

  16. Building Performance Simulation tools for planning of energy efficiency retrofits

    OpenAIRE

    Mondrup, Thomas Fænø; Karlshøj, Jan; Vestergaard, Flemming

    2014-01-01

    Designing energy efficiency retrofits for existing buildings will bring environmental, economic, social, and health benefits. However, selecting specific retrofit strategies is complex and requires careful planning. In this study, we describe a methodology for adopting Building Performance Simulation (BPS) tools as energy and environmentally conscious decision-making aids. The methodology has been developed to screen buildings for potential improvements and to support the development of retro...

  17. Measurement, Prediction And Simulation Methods of Moisture Content In Buildings

    OpenAIRE

    Esmaeilpour, Mehrnoush

    2011-01-01

    ABSTRACT: This thesis represented some information on prediction and controlling of moisture content in buildings. Extreme disclosure to moisture is not only a common cause of major damage to building materials, it also can lead to unhealthy indoor living environments. So predicate and control moisture content provides a durable and long-term performance building with energy efficiency. Different methods (mechanical, simulation and graphical) for predicating and controlling the moisture cont...

  18. Geometry model construction in infrared image theory simulation of buildings

    Institute of Scientific and Technical Information of China (English)

    谢鸣; 李玉秀; 徐辉; 谈和平

    2004-01-01

    Geometric model construction is the basis of infrared image theory simulation. Taking the construction of the geometric model of one building in Harbin as an example, this paper analyzes the theoretical groundings of simplification and principles of geometric model construction of buildings. It then discusses some particular treatment methods in calculating the radiation transfer coefficient in geometric model construction using the Monte Carlo Method.

  19. Computational Fluid Dynamics and Building Energy Performance Simulation

    DEFF Research Database (Denmark)

    Nielsen, Peter Vilhelm; Tryggvason, T.

    1998-01-01

    An interconnection between a building energy performance simulation program and a Computational Fluid Dynamics program (CFD) for room air distribution will be introduced for improvement of the predictions of both the energy consumption and the indoor environment. The building energy performance...

  20. Communication Capacity Building through Pharmacy Practice Simulation

    OpenAIRE

    Fejzic, Jasmina; Barker, Michelle; Hills, Ruth; Priddle, Alannah

    2016-01-01

    Objective. To examine the effectiveness of simulated learning modules (SLMs) encompassing EXcellence in Cultural Experiential Learning and Leadership (EXCELL) core competencies in enhancing pharmacy students’ professional communication skills.

  1. Research on the simulation framework in Building Information Modeling

    OpenAIRE

    Liang, Nan; Xu, Hongqing; Yu, Qiong

    2012-01-01

    In recent ten years, Building Information Modeling (BIM) has been proposed and applied in the industry of architecture. For the high efficiency and visualization, BIM and correlative technologies are welcomed by architects, engineers, builders and owners, thus the technologies on modeling for design has been widely researched. However, little attention is given to simulation while simulation is an important part of design for building, maybe because it is seen as somewhat less related to the ...

  2. CarbBuilder: Software for building molecular models of complex oligo- and polysaccharide structures.

    Science.gov (United States)

    Kuttel, Michelle M; Ståhle, Jonas; Widmalm, Göran

    2016-08-15

    CarbBuilder is a portable software tool for producing three-dimensional molecular models of carbohydrates from the simple text specification of a primary structure. CarbBuilder can generate a wide variety of carbohydrate structures, ranging from monosaccharides to large, branched polysaccharides. Version 2.0 of the software, described in this article, supports monosaccharides of both mammalian and bacterial origin and a range of substituents for derivatization of individual sugar residues. This improved version has a sophisticated building algorithm to explore the range of possible conformations for a specified carbohydrate molecule. Illustrative examples of models of complex polysaccharides produced by CarbBuilder demonstrate the capabilities of the software. CarbBuilder is freely available under the Artistic License 2.0 from https://people.cs.uct.ac.za/~mkuttel/Downloads.html. © 2016 Wiley Periodicals, Inc. PMID:27317625

  3. Implementation of Models for Building Envelope Air Flow Fields in a Whole Building Hygrothermal Simulation Tool

    DEFF Research Database (Denmark)

    Rode, Carsten; Grau, Karl

    2009-01-01

    Simulation tools are becoming available which predict the heat and moisture conditions in the indoor environment as well as in the envelope of buildings, and thus it has become possible to consider the important interaction between the different components of buildings and the different physical...... phenomena which occur. However, there is still room for further development of such tools. This paper will present an attempt to integrate modelling of air flows in building envelopes into a whole building hygrothermal simulation tool. Two kinds of air flows have been considered: 1. Air flow in ventilated...... cavity such as in the exterior cladding of building envelopes, i.e. a flow which is parallel to the construction plane. 2. Infiltration/exfiltration of air through the building envelope, i.e. a flow which is perpendicular to the construction plane. The new models make it possible to predict the thermal...

  4. Open Marketplace for Simulation Software on the Basis of a Web Platform

    Science.gov (United States)

    Kryukov, A. P.; Demichev, A. P.

    2016-02-01

    The focus in development of a new generation of middleware shifts from the global grid systems to building convenient and efficient web platforms for remote access to individual computing resources. Further line of their development, suggested in this work, is related not only with the quantitative increase in their number and with the expansion of scientific, engineering, and manufacturing areas in which they are used, but also with improved technology for remote deployment of application software on the resources interacting with the web platforms. Currently, the services for providers of application software in the context of scientific-oriented web platforms is not developed enough. The proposed in this work new web platforms of application software market should have all the features of the existing web platforms for submissions of jobs to remote resources plus the provision of specific web services for interaction on market principles between the providers and consumers of application packages. The suggested approach will be approved on the example of simulation applications in the field of nonlinear optics.

  5. Development of Radio Frequency Antenna Radiation Simulation Software

    International Nuclear Information System (INIS)

    Antennas are widely used national wide for radio frequency propagation especially for communication system. Radio frequency is electromagnetic spectrum from 10 kHz to 300 GHz and non-ionizing. These radiation exposures to human being have radiation hazard risk. This software was under development using LabVIEW for radio frequency exposure calculation. For the first phase of this development, software purposely to calculate possible maximum exposure for quick base station assessment, using prediction methods. This software also can be used for educational purpose. Some results of this software are comparing with commercial IXUS and free ware NEC software. (author)

  6. Software Integration in Multi-scale Simulations: the PUPIL System

    Science.gov (United States)

    Torras, J.; Deumens, E.; Trickey, S. B.

    2006-10-01

    for the potential user. A general main program allows the management of every package with a special communication protocol between their interfaces following the directives introduced by the user which are stored in an XML structured file. The initial prototype of the PUPIL (Program for User Packages Interfacing and Linking) system has been done using Java as a fast, easy prototyping object oriented (OO) language. In order to test it, we have applied this prototype to a previously studied problem, the fracture of a silica nanorod. We did so joining two different packages to do a QM/MD calculation. The results show the potential for this software system to do different kind of simulations and its simplicity of maintenance.

  7. First Swiss building and urban simulation conference. Conference proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Zweifel, G.; Citherlet, S.; Afjei, T.; Pahud, D.; Robinson, D.; Schaelin, A.

    2010-07-01

    These contributions presented at a conference, held in 2009 in Horw, near Lucerne, Switzerland, deal with the simulation of building technical services. Three contribution blocks dealt with thermal and heating, ventilation and air-conditioning (HVAC) simulation, airflow and stochastic modelling and urban simulation. In the thermal and HVAC simulation session, the potential and limitations of building energy performance simulation is examined from an engineering perspective, a parametric study of an air heat exchanger for the cooling of buildings is presented and a comparison of measured and estimated electric energy use and the impact of assumed occupancy patterns is made. Contributions on standard solutions for energy efficient heating and cooling with heat pumps, the validation and certification of dynamic building simulation tools, standards and tools for the energy performance of buildings with a simple chiller model and the system-simulation of a central solar heating plant with seasonal duct storage in Geneva, Switzerland, are presented. In the airflow and stochastic modelling session, the optimisation of air flow in operating theatres is examined, and air-flow phenomena in flats are explained with illustrations of computational fluid dynamics (CFD). Also, the comparison of test reference years to stochastically generated time series and a comprehensive stochastic model of window usage are discussed. Contributions on the simulation of air-flow patterns and wind loads on facades and the choice of appropriate simulation techniques for the thermal analysis of double skin facades complete the session. In the final Urban Simulation session, a new CFD approach for urban flow and pollution dispersion simulation is presented, a comprehensive micro-simulation of resource flows for sustainable urban planning, multi-scale modelling of the urban climate and the optimisation of urban energy demands using an evolutionary algorithm are discussed.

  8. Application of the Software as a Service Model to the Control of Complex Building Systems

    Energy Technology Data Exchange (ETDEWEB)

    Stadler, Michael; Donadee, Jonathan; Marnay, Chris; Mendes, Goncalo; Appen, Jan von; Megel, Oliver; Bhattacharya, Prajesh; DeForest, Nicholas; Lai, Judy

    2011-03-17

    In an effort to create broad access to its optimization software, Lawrence Berkeley National Laboratory (LBNL), in collaboration with the University of California at Davis (UC Davis) and OSISoft, has recently developed a Software as a Service (SaaS) Model for reducing energy costs, cutting peak power demand, and reducing carbon emissions for multipurpose buildings. UC Davis currently collects and stores energy usage data from buildings on its campus. Researchers at LBNL sought to demonstrate that a SaaS application architecture could be built on top of this data system to optimize the scheduling of electricity and heat delivery in the building. The SaaS interface, known as WebOpt, consists of two major parts: a) the investment& planning and b) the operations module, which builds on the investment& planning module. The operational scheduling and load shifting optimization models within the operations module use data from load prediction and electrical grid emissions models to create an optimal operating schedule for the next week, reducing peak electricity consumption while maintaining quality of energy services. LBNL's application also provides facility managers with suggested energy infrastructure investments for achieving their energy cost and emission goals based on historical data collected with OSISoft's system. This paper describes these models as well as the SaaS architecture employed by LBNL researchers to provide asset scheduling services to UC Davis. The peak demand, emissions, and cost implications of the asset operation schedule and investments suggested by this optimization model are analysed.

  9. Application of the Software as a Service Model to the Control of Complex Building Systems

    Energy Technology Data Exchange (ETDEWEB)

    Stadler, Michael; Donadee, Jon; Marnay, Chris; Lai, Judy; Mendes, Goncalo; Appen, Jan von; M& #233; gel, Oliver; Bhattacharya, Prajesh; DeForest, Nicholas; Lai, Judy

    2011-03-18

    In an effort to create broad access to its optimization software, Lawrence Berkeley National Laboratory (LBNL), in collaboration with the University of California at Davis (UC Davis) and OSISoft, has recently developed a Software as a Service (SaaS) Model for reducing energy costs, cutting peak power demand, and reducing carbon emissions for multipurpose buildings. UC Davis currently collects and stores energy usage data from buildings on its campus. Researchers at LBNL sought to demonstrate that a SaaS application architecture could be built on top of this data system to optimize the scheduling of electricity and heat delivery in the building. The SaaS interface, known as WebOpt, consists of two major parts: a) the investment& planning and b) the operations module, which builds on the investment& planning module. The operational scheduling and load shifting optimization models within the operations module use data from load prediction and electrical grid emissions models to create an optimal operating schedule for the next week, reducing peak electricity consumption while maintaining quality of energy services. LBNL's application also provides facility managers with suggested energy infrastructure investments for achieving their energy cost and emission goals based on historical data collected with OSISoft's system. This paper describes these models as well as the SaaS architecture employed by LBNL researchers to provide asset scheduling services to UC Davis. The peak demand, emissions, and cost implications of the asset operation schedule and investments suggested by this optimization model are analyzed.

  10. Simulation of Room Climate of Public Buildings

    Directory of Open Access Journals (Sweden)

    Prorokova Maria

    2016-01-01

    Full Text Available The article presents the details of modeling of heat exchange and mass transfer in a room in the formation of a microclimate. The mathematical model is implemented in the program ANSYS Fluent and is used to predict the climate parameters after the implementation of energy saving measures in the building. Verification of the mathematical model by comparing the experimental data with the results of the measurement of microclimate parameters of the experiment.

  11. The Impact of Strategy for Building Sustainability on Performance of Software Development Business in Thailand

    Directory of Open Access Journals (Sweden)

    Karun Pratoom

    2011-02-01

    Full Text Available In the present business environments, balancing between the needs of a business enterprise and its stakeholders is recognized as a critical strategy for the success and long-term survival of any firm. However, the understanding of sustainable strategy on firm performance remains a key challenge for both academia and management alike. The purpose of this study is to examine the effect of strategy for building sustainability on performance. Data are collected from 122 managers of software development companies in Thailand. Results show that strategy for building sustainability positively affected Capability Maturity Model Integration (CMMI level, financial performance, corporate image, and stakeholder satisfaction. Furthermore, results also show that the strategy for building sustainability had indirect effects on corporate image through the CMMI level and the stakeholder satisfaction had direct effects on financial performance.

  12. Simulation of probabilistic wind loads and building analysis

    Science.gov (United States)

    Shah, Ashwin R.; Chamis, Christos C.

    1991-01-01

    Probabilistic wind loads likely to occur on a structure during its design life are predicted. Described here is a suitable multifactor interactive equation (MFIE) model and its use in the Composite Load Spectra (CLS) computer program to simulate the wind pressure cumulative distribution functions on four sides of a building. The simulated probabilistic wind pressure load was applied to a building frame, and cumulative distribution functions of sway displacements and reliability against overturning were obtained using NESSUS (Numerical Evaluation of Stochastic Structure Under Stress), a stochastic finite element computer code. The geometry of the building and the properties of building members were also considered as random in the NESSUS analysis. The uncertainties of wind pressure, building geometry, and member section property were qualified in terms of their respective sensitivities on the structural response.

  13. Building Performance Simulation tools for planning of energy efficiency retrofits

    DEFF Research Database (Denmark)

    Mondrup, Thomas Fænø; Karlshøj, Jan; Vestergaard, Flemming

    2014-01-01

    Designing energy efficiency retrofits for existing buildings will bring environmental, economic, social, and health benefits. However, selecting specific retrofit strategies is complex and requires careful planning. In this study, we describe a methodology for adopting Building Performance...... to energy efficiency retrofits in social housing. To generate energy savings, we focus on optimizing the building envelope. We evaluate alternative building envelope actions using procedural solar radiation and daylight simulations. In addition, we identify the digital information flow and the information...... Simulation (BPS) tools as energy and environmentally conscious decision-making aids. The methodology has been developed to screen buildings for potential improvements and to support the development of retrofit strategies. We present a case study of a Danish renovation project, implementing BPS approaches...

  14. FACET: A simulation software framework for modeling complex societal processes and interactions

    Energy Technology Data Exchange (ETDEWEB)

    Christiansen, J. H.

    2000-06-02

    FACET, the Framework for Addressing Cooperative Extended Transactions, was developed at Argonne National Laboratory to address the need for a simulation software architecture in the style of an agent-based approach, but with sufficient robustness, expressiveness, and flexibility to be able to deal with the levels of complexity seen in real-world social situations. FACET is an object-oriented software framework for building models of complex, cooperative behaviors of agents. It can be used to implement simulation models of societal processes such as the complex interplay of participating individuals and organizations engaged in multiple concurrent transactions in pursuit of their various goals. These transactions can be patterned on, for example, clinical guidelines and procedures, business practices, government and corporate policies, etc. FACET can also address other complex behaviors such as biological life cycles or manufacturing processes. To date, for example, FACET has been applied to such areas as land management, health care delivery, avian social behavior, and interactions between natural and social processes in ancient Mesopotamia.

  15. A Reconfigurable Simulation-Based Test System for Automatically Assessing Software Operating Skills

    Science.gov (United States)

    Su, Jun-Ming; Lin, Huan-Yu

    2015-01-01

    In recent years, software operating skills, the ability in computer literacy to solve problems using specific software, has become much more important. A great deal of research has also proven that students' software operating skills can be efficiently improved by practicing customized virtual and simulated examinations. However, constructing…

  16. SOFIAS – Software for life-cycle assessment and environmental rating of buildings

    Directory of Open Access Journals (Sweden)

    Oregi Isasi, X.

    2016-06-01

    Full Text Available This paper describes the development process of a new software tool, called SOFIAS (Software for a Sustainable Architecture, funded by the Spanish Ministry of Economy and Competitivenes. Following CEN/TC 350 standard on environmental assessment of buildings, the tool aims at assisting building professionals on reducing the life-cycle environmental impact through the design of new buildings and the refurbishment of existing ones. In addition, SOFIAS provides a rating system based on the Life Cycle Assessment (LCA methodology. This paper explains the innovative aspects of this software, the working methodology and the different type of results that can be obtained using SOFIAS.Este artículo describe el proceso de desarrollo de la nueva herramienta informática SOFIAS (Software de Funciones Integradas para una Arquitectura Sostenible, financiado por el Ministerio de Economía y Competitividad del Gobierno de España. En base al estandar de la evaluación ambiental de los edificios definido por el CEN/TC 350, esta nueva herramienta tiene como objetivo ayudar a los técnicos de la construcción en reducir el impacto ambiental durante el ciclo de vida a través del diseño optimizado de nuevos edificios o edificios rehabilitados. De forma paralela, SOFIAS proporciona un nuevo sistema de calificación basado en la metodología del Análisis de Ciclo de Vida (ACV. Este artículo expone los aspectos innovadores de esta herramienta informática, la metodología de trabajo y los diferentes tipos de resultados que se pueden obtener tras su aplicación.

  17. Implementation of Models for Building Envelope Air Flow Fields in a Whole Building Hygrothermal Simulation Tool

    DEFF Research Database (Denmark)

    Sørensen, Karl Grau; Rode, Carsten

    2009-01-01

    phenomena that occur. However, there is still room for further development of such tools. This paper will present an attempt to integrate modelling of air flows in building envelopes into a whole building hygrothermal simulation tool. Two kinds of air flows have been considered: (1) Air flow in a ventilated...... cavity such as behind the exterior cladding of a building envelope, i.e. a flow which is parallel to the construction plane. (2) Infiltration/exfiltration of air through the building envelope, i.e. a flow which is perpendicular to the constructionplane. The paper presents the models and how they have...

  18. SimSoC: A full system simulation software for embedded systems

    OpenAIRE

    Helmstetter, Claude; Joloboff, Vania; XIAO, HUI

    2009-01-01

    International audience The development of embedded systems requires the development of increasingly complex software and hardware platforms. Full system simulation makes it possible to run the exact binary embedded software including the operating system on a totally simulated hardware platform. Whereas most simulation environments do not support full system simulation, or do not use any hardware modeling techniques, or have combined different types of technology, SimSoC is developing a fu...

  19. Simulation of Molecular Signaling in Blood Vessels: Software Design and Application to Atherogenesis

    OpenAIRE

    Felicetti, Luca; Femminella, Mauro; Reali, Gianluca

    2013-01-01

    This paper presents a software platform, named BiNS2, able to simulate diffusion-based molecular communications with drift inside blood vessels. The contribution of the paper is twofold. First a detailed description of the simulator is given, under the software engineering point of view, by highlighting the innovations and optimizations introduced. Their introduction into the previous version of the BiNS simulator was needed to provide to functions for simulating molecular signaling and commu...

  20. Weather data analysis based on typical weather sequence analysis. Application: energy building simulation

    CERN Document Server

    David, Mathieu; Garde, Francois; Boyer, Harry

    2014-01-01

    In building studies dealing about energy efficiency and comfort, simulation software need relevant weather files with optimal time steps. Few tools generate extreme and mean values of simultaneous hourly data including correlation between the climatic parameters. This paper presents the C++ Runeole software based on typical weather sequences analysis. It runs an analysis process of a stochastic continuous multivariable phenomenon with frequencies properties applied to a climatic database. The database analysis associates basic statistics, PCA (Principal Component Analysis) and automatic classifications. Different ways of applying these methods will be presented. All the results are stored in the Runeole internal database that allows an easy selection of weather sequences. The extreme sequences are used for system and building sizing and the mean sequences are used for the determination of the annual cooling loads as proposed by Audrier-Cros (Audrier-Cros, 1984). This weather analysis was tested with the datab...

  1. Towards automatic building of continuous and discrete process simulator

    International Nuclear Information System (INIS)

    The problem to be solved is the simulation of essentially continuous processes but involving a limited number of events leading to discontinuities. The NEPTUNIX simulation package solves this problem in the folloving way: a description of the process model is made, using a non-procedural language, the model is then analysed and, if it is found correct, NEPTUNIX generates automatically the corresponding simulator. This simulator is efficient and transportable. Model description and other compiler outputs build up a complete documentation of the model, which documentation is also fundamental for easy and efficient operation of the simulator

  2. Experiences with Integrating Simulation into a Software Engineering Curriculum

    Science.gov (United States)

    Bollin, Andreas; Hochmuller, Elke; Mittermeir, Roland; Samuelis, Ladislav

    2012-01-01

    Software Engineering education must account for a broad spectrum of knowledge and skills software engineers will be required to apply throughout their professional life. Covering all the topics in depth within a university setting is infeasible due to curricular constraints as well as due to the inherent differences between educational…

  3. Software architecture standard for simulation virtual machine, version 2.0

    Science.gov (United States)

    Sturtevant, Robert; Wessale, William

    1994-01-01

    The Simulation Virtual Machine (SBM) is an Ada architecture which eases the effort involved in the real-time software maintenance and sustaining engineering. The Software Architecture Standard defines the infrastructure which all the simulation models are built from. SVM was developed for and used in the Space Station Verification and Training Facility.

  4. SOFI Simulation Tool: A Software Package for Simulating and Testing Super-Resolution Optical Fluctuation Imaging

    Science.gov (United States)

    Sharipov, Azat; Geissbuehler, Stefan; Leutenegger, Marcel; Vandenberg, Wim; Dedecker, Peter; Hofkens, Johan; Lasser, Theo

    2016-01-01

    Super-resolution optical fluctuation imaging (SOFI) allows one to perform sub-diffraction fluorescence microscopy of living cells. By analyzing the acquired image sequence with an advanced correlation method, i.e. a high-order cross-cumulant analysis, super-resolution in all three spatial dimensions can be achieved. Here we introduce a software tool for a simple qualitative comparison of SOFI images under simulated conditions considering parameters of the microscope setup and essential properties of the biological sample. This tool incorporates SOFI and STORM algorithms, displays and describes the SOFI image processing steps in a tutorial-like fashion. Fast testing of various parameters simplifies the parameter optimization prior to experimental work. The performance of the simulation tool is demonstrated by comparing simulated results with experimentally acquired data. PMID:27583365

  5. Working mechanism and numerical simulation of assembly coastal building techniques

    Institute of Scientific and Technical Information of China (English)

    陈育民; 刘汉龙; 陈泽

    2008-01-01

    A new coastal technique, named as assembly coastal building, was introduced. The main concept of the technique was the assembling components which could be combined and locked together to form a large caisson. The assembly coastal building technique was used in a sea access road in Zhuanghai 4X1 well, Dagang Oilfield. The design plans and in-situ tests in the sea access road project were introduced in detail. According to the Zhuanghai project, the numerical simulation method of assembly coastal building technique was proposed. 2D numerical simulations were performed in FLAC to analyze the displacement and stability of the technique in the construction process and post-construction period. The settlement calculated is close to the in-situ results, which proves that the proposed numerical method is reasonable. Results show that the assembly coastal building technique has large safety factor under the gravity loading and wave loadings.

  6. A software tool for teaching and training how to build and use a TOWS matrix

    Directory of Open Access Journals (Sweden)

    Amparo Mariño Ibáñez

    2010-05-01

    Full Text Available Strategic planning is currently being used by most companies; it analyses current and expected future situations, determines com-pany orientation and develops means or strategies for achieving their stated missions. This article is aimed at reviewing general considerations in strategic planning and presenting a computational tool designed for building a TOWS matrix for matching a company’s opportunities and threats with its weaknesses and, more especially, its strengths. The software development life cycle (SDLC involved analysis, design, implementation and use. The literature about strategic planning and SWOT analysis was re-viewed for making the analysis. The software only automates an aspect of the whole strategic planning process and can be used for improving students and staff training in SWOT analysis. This type of work seeks to motivate interdisciplinary research.

  7. Simulator for Optimization of Software Project Cost and Schedule

    Directory of Open Access Journals (Sweden)

    P. K. Suri

    2008-01-01

    Full Text Available Each phase of the software design consumes some resources and hence has cost associated with it. In most of the cases cost will vary to some extent with the amount of time consumed by the design of each phase .The total cost of project, which is aggregate of the activities costs will also depends upon the project duration, can be cut down to some extent. The aim is always to strike a balance between the cost and time and to obtain an optimum software project schedule. An optimum minimum cost project schedule implies lowest possible cost and the associated time for the software project management. In this research an attempt has been made to solve the cost and schedule problem of software project using PERT network showing the details of the activities to be carried out for a software project development/management with the help of crashing, reducing software project duration at a minimum cost by locating a minimal cut in the duration of an activity of the original project design network. This minimal cut is then utilized to identify the project phases which should experience a duration modification in order to achieve the total software duration reduction. Crashing PERT networks can save a significant amount of money in crashing and overrun costs of a company. Even if there are no direct costs in the form of penalties for late completion of projects, there is likely to be intangible costs because of reputation damage.

  8. Sustainable construction building performance simulation and asset and maintenance management

    CERN Document Server

    2016-01-01

    This book presents a collection of recent research works that highlight best practice solutions, case studies and practical advice on the implementation of sustainable construction techniques. It includes a set of new developments in the field of building performance simulation, building sustainability assessment, sustainable management, asset and maintenance management and service-life prediction. Accordingly, the book will appeal to a broad readership of professionals, scientists, students, practitioners, lecturers and other interested parties.

  9. Software package to automate the design and production of translucent building structures made of pvc

    Directory of Open Access Journals (Sweden)

    Petrova Irina Yur’evna

    2016-08-01

    Full Text Available The article describes the features of the design and production of translucent building structures made of PVC. The analysis of the automation systems of this process currently existing on the market is carried out, their advantages and disadvantages are identified. Basing on this analysis, a set of requirements for automation systems for the design and production of translucent building structures made of PVC is formulated; the basic entities are involved in those business processes. The necessary functions for the main application and for dealers’ application are specified. The main application is based on technological platform 1C: Enterprise 8.2. The dealers’ module is .NET application and is developed with the use of Microsoft Visual Studio and Microsoft SQL Server because these software products have client versions free for end users (.NET Framework 4.0 Client Profile and Microsoft SQL Server 2008 Express. The features of the developed software complex implementation are described; the relevant charts are given. The scheme of system deployment and protocols of data exchange between 1C server, 1C client and dealer is presented. Also the functions supported by 1C module and .NET module are described. The article describes the content of class library developed for .NET module. The specification of integration of the two applications in a single software package is given. The features of the GUI organization are described; the corresponding screenshots are given. The possible ways of further development of the described software complex are presented and a conclusion about its competitiveness and expediency of new researches is made.

  10. A Study of the Use of Ontologies for Building Computer-Aided Control Engineering Self-Learning Educational Software

    Science.gov (United States)

    García, Isaías; Benavides, Carmen; Alaiz, Héctor; Alonso, Angel

    2013-01-01

    This paper describes research on the use of knowledge models (ontologies) for building computer-aided educational software in the field of control engineering. Ontologies are able to represent in the computer a very rich conceptual model of a given domain. This model can be used later for a number of purposes in different software applications. In…

  11. Man-Machine Interface Design for Modeling and Simulation Software

    OpenAIRE

    Arnstein J. Borstad

    1986-01-01

    Computer aided design (CAD) systems, or more generally interactive software, are today being developed for various application areas like VLSI-design, mechanical structure design, avionics design, cartographic design, architectual design, office automation, publishing, etc. Such tools are becoming more and more important in order to be productive and to be able to design quality products. One important part of CAD-software development is the man-machine interface (MMI) design.

  12. Communication Capacity Building through Pharmacy Practice Simulation.

    Science.gov (United States)

    Fejzic, Jasmina; Barker, Michelle; Hills, Ruth; Priddle, Alannah

    2016-03-25

    Objective. To examine the effectiveness of simulated learning modules (SLMs) encompassing EXcellence in Cultural Experiential Learning and Leadership (EXCELL) core competencies in enhancing pharmacy students' professional communication skills. Methods. Students completed three hours of preparatory lectures and eight hours of workshops comprising six SLMs themed around pharmacy practice and pharmacy placements. Each SLM comprised role-plays with actors, facilitation using EXCELL Social Interaction Maps (SIMs), and debriefing. Evaluations of SLMs included quantitative and qualitative survey responses collected before, during and after workshops, and after placements. Facilitators reflected on SLMs as a pedagogic modality. Results. Student feedback was positive about SLMs as an effective learning tool. The majority indicated areas of new learning and found SLMs enhanced their professional skills and confidence. Facilitator feedback was positive, and suggested SLM optimization strategies. Conclusion. Student and teaching team recommendations will inform future curriculum development including the optimization of SLMs in pharmacy education. PMID:27073281

  13. Using CAD software to simulate PV energy yield - The case of product integrated photovoltaic operated under indoor solar irradiation

    Energy Technology Data Exchange (ETDEWEB)

    Reich, N.H.; van Sark, W.G.J.H.M.; Turkenburg, W.C. [Dept. of Science, Technology and Society, Copernicus Institute for Sustainable Development and Innovation, Utrecht University, Heidelberglaan 2, 3584 CS, Utrecht (Netherlands); Sinke, W.C. [Dept. of Science, Technology and Society, Copernicus Institute for Sustainable Development and Innovation, Utrecht University, Heidelberglaan 2, 3584 CS, Utrecht (Netherlands); Energy Research Centre of the Netherlands (ECN), Petten (Netherlands)

    2010-08-15

    In this paper, we show that photovoltaic (PV) energy yields can be simulated using standard rendering and ray-tracing features of Computer Aided Design (CAD) software. To this end, three-dimensional (3-D) sceneries are ray-traced in CAD. The PV power output is then modeled by translating irradiance intensity data of rendered images back into numerical data. To ensure accurate results, the solar irradiation data used as input is compared to numerical data obtained from rendered images, showing excellent agreement. As expected, also ray-tracing precision in the CAD software proves to be very high. To demonstrate PV energy yield simulations using this innovative concept, solar radiation time course data of a few days was modeled in 3-D to simulate distributions of irradiance incident on flat, single- and double-bend shapes and a PV powered computer mouse located on a window sill. Comparisons of measured to simulated PV output of the mouse show that also in practice, simulation accuracies can be very high. Theoretically, this concept has great potential, as it can be adapted to suit a wide range of solar energy applications, such as sun-tracking and concentrator systems, Building Integrated PV (BIPV) or Product Integrated PV (PIPV). However, graphical user interfaces of 'CAD-PV' software tools are not yet available. (author)

  14. Design of energy-efficient buildings using interaction between Building Simulation Programme and Energy Supply Simulations for District Heating

    DEFF Research Database (Denmark)

    Christensen, Jørgen Erik; Dalla Rosa, Alessandro; Nagla, Inese

    demand density for which the connection to low-energy district heating networks is cost-effective and energy efficient. By using a dynamic energy simulation program for buildings it is possible to analyze the influence of the human behaviour for the building and link the results to the simulation program...... for district heating networks. The results show that human behaviour can lead to 50% higher heating demand and 60% higher peak loads than expected according to reference values in standardized calculation of energy demand pattern in energy-efficient buildings. The consequence is that in order to get the full...... that there is a large potential for distributing energy in areas with energy efficient buildings. As a measure for the feasibility of district heating, the linear heat density can be used as a representative value, and the results show that it is possible to supply heat with low-energy district heating networks...

  15. A Project Management Approach to Using Simulation for Cost Estimation on Large, Complex Software Development Projects

    Science.gov (United States)

    Mizell, Carolyn; Malone, Linda

    2007-01-01

    It is very difficult for project managers to develop accurate cost and schedule estimates for large, complex software development projects. None of the approaches or tools available today can estimate the true cost of software with any high degree of accuracy early in a project. This paper provides an approach that utilizes a software development process simulation model that considers and conveys the level of uncertainty that exists when developing an initial estimate. A NASA project will be analyzed using simulation and data from the Software Engineering Laboratory to show the benefits of such an approach.

  16. Methods for implementing Building Information Modeling and Building Performance Simulation approaches

    DEFF Research Database (Denmark)

    Mondrup, Thomas Fænø

    In the present thesis, a number of studies into the adoption of Building Information Modeling (BIM) and Building Performance Simulation (BPS) are presented. The thesis has two main goals. The first is to explore the benefits and challenges of adopting (a) BIM as a platform for Architecture......, Engineering, Construction, and Facility Management (AEC/ FM) communication, and (b) BPS as a platform for early-stage building performance prediction. The second is to develop (a) relevant AEC/FM communication support instruments, and (b) standardized BIM and BPS execution guidelines and information exchange...... to improve early-stage building performance prediction. However, because of complex BPS information exchange structures, the BPS process is not always practical, highlighting the need for these structures to be simplified and more, clearly articulated. In this thesis, buildingSMART standard approaches...

  17. Calibration process and energy simulation of a building

    OpenAIRE

    Gerphagnon, Solène

    2016-01-01

    In the current context of ongoing search for improvement of energy performance, the management of buildings’ energy performance has become a very important stake. Openergy aims to revolutionize the energy monitoring of buildings thanks to dynamic thermal simulation. The calibration of the simulation consists in adjusting different input parameters in order to have results close to reality. This convergence is generally guided by an expert of the field, but it aims to become automatic, in orde...

  18. The SCEC Broadband Platform: Open-Source Software for Strong Ground Motion Simulation and Validation

    Science.gov (United States)

    Goulet, C.; Silva, F.; Maechling, P. J.; Callaghan, S.; Jordan, T. H.

    2015-12-01

    The Southern California Earthquake Center (SCEC) Broadband Platform (BBP) is a carefully integrated collection of open-source scientific software programs that can simulate broadband (0-100Hz) ground motions for earthquakes at regional scales. The BBP scientific software modules implement kinematic rupture generation, low and high-frequency seismogram synthesis using wave propagation through 1D layered velocity structures, seismogram ground motion amplitude calculations, and goodness of fit measurements. These modules are integrated into a software system that provides user-defined, repeatable, calculation of ground motion seismograms, using multiple alternative ground motion simulation methods, and software utilities that can generate plots, charts, and maps. The BBP has been developed over the last five years in a collaborative scientific, engineering, and software development project involving geoscientists, earthquake engineers, graduate students, and SCEC scientific software developers. The BBP can run earthquake rupture and wave propagation modeling software to simulate ground motions for well-observed historical earthquakes and to quantify how well the simulated broadband seismograms match the observed seismograms. The BBP can also run simulations for hypothetical earthquakes. In this case, users input an earthquake location and magnitude description, a list of station locations, and a 1D velocity model for the region of interest, and the BBP software then calculates ground motions for the specified stations. The SCEC BBP software released in 2015 can be compiled and run on recent Linux systems with GNU compilers. It includes 5 simulation methods, 7 simulation regions covering California, Japan, and Eastern North America, the ability to compare simulation results against GMPEs, updated ground motion simulation methods, and a simplified command line user interface.

  19. Genoviz Software Development Kit: Java tool kit for building genomics visualization applications

    Directory of Open Access Journals (Sweden)

    Chervitz Stephen A

    2009-08-01

    Full Text Available Abstract Background Visualization software can expose previously undiscovered patterns in genomic data and advance biological science. Results The Genoviz Software Development Kit (SDK is an open source, Java-based framework designed for rapid assembly of visualization software applications for genomics. The Genoviz SDK framework provides a mechanism for incorporating adaptive, dynamic zooming into applications, a desirable feature of genome viewers. Visualization capabilities of the Genoviz SDK include automated layout of features along genetic or genomic axes; support for user interactions with graphical elements (Glyphs in a map; a variety of Glyph sub-classes that promote experimentation with new ways of representing data in graphical formats; and support for adaptive, semantic zooming, whereby objects change their appearance depending on zoom level and zooming rate adapts to the current scale. Freely available demonstration and production quality applications, including the Integrated Genome Browser, illustrate Genoviz SDK capabilities. Conclusion Separation between graphics components and genomic data models makes it easy for developers to add visualization capability to pre-existing applications or build new applications using third-party data models. Source code, documentation, sample applications, and tutorials are available at http://genoviz.sourceforge.net/.

  20. A graphical simulation software for instruction in cardiovascular mechanics physiology

    Directory of Open Access Journals (Sweden)

    Wenger Roland H

    2011-01-01

    Full Text Available Abstract Background Computer supported, interactive e-learning systems are widely used in the teaching of physiology. However, the currently available complimentary software tools in the field of the physiology of cardiovascular mechanics have not yet been adapted to the latest systems software. Therefore, a simple-to-use replacement for undergraduate and graduate students' education was needed, including an up-to-date graphical software that is validated and field-tested. Methods Software compatible to Windows, based on modified versions of existing mathematical algorithms, has been newly developed. Testing was performed during a full term of physiological lecturing to medical and biology students. Results The newly developed CLabUZH software models a reduced human cardiovascular loop containing all basic compartments: an isolated heart including an artificial electrical stimulator, main vessels and the peripheral resistive components. Students can alter several physiological parameters interactively. The resulting output variables are printed in x-y diagrams and in addition shown in an animated, graphical model. CLabUZH offers insight into the relations of volume, pressure and time dependency in the circulation and their correlation to the electrocardiogram (ECG. Established mechanisms such as the Frank-Starling Law or the Windkessel Effect are considered in this model. The CLabUZH software is self-contained with no extra installation required and runs on most of today's personal computer systems. Conclusions CLabUZH is a user-friendly interactive computer programme that has proved to be useful in teaching the basic physiological principles of heart mechanics.

  1. Sandia National Laboratories Advanced Simulation and Computing (ASC) software quality plan. Part 1: ASC software quality engineering practices, Version 2.0.

    Energy Technology Data Exchange (ETDEWEB)

    Sturtevant, Judith E.; Heaphy, Robert; Hodges, Ann Louise; Boucheron, Edward A.; Drake, Richard Roy; Minana, Molly A.; Hackney, Patricia; Forsythe, Christi A.; Schofield, Joseph Richard, Jr. (,; .); Pavlakos, Constantine James; Williamson, Charles Michael; Edwards, Harold Carter

    2006-09-01

    The purpose of the Sandia National Laboratories Advanced Simulation and Computing (ASC) Software Quality Plan is to clearly identify the practices that are the basis for continually improving the quality of ASC software products. The plan defines the ASC program software quality practices and provides mappings of these practices to Sandia Corporate Requirements CPR 1.3.2 and 1.3.6 and to a Department of Energy document, ASCI Software Quality Engineering: Goals, Principles, and Guidelines. This document also identifies ASC management and software project teams responsibilities in implementing the software quality practices and in assessing progress towards achieving their software quality goals.

  2. Sandia National Laboratories Advanced Simulation and Computing (ASC) Software Quality Plan. Part 2, Mappings for the ASC software quality engineering practices. Version 1.0.

    Energy Technology Data Exchange (ETDEWEB)

    Ellis, Molly A.; Heaphy, Robert; Sturtevant, Judith E.; Hodges, Ann Louise; Boucheron, Edward A.; Drake, Richard Roy; Forsythe, Christi A.; Schofield, Joseph Richard, Jr.; Pavlakos, Constantine James; Williamson, Charles Michael; Edwards, Harold Carter

    2005-01-01

    The purpose of the Sandia National Laboratories Advanced Simulation and Computing (ASC) Software Quality Plan is to clearly identify the practices that are the basis for continually improving the quality of ASC software products. The plan defines the ASC program software quality practices and provides mappings of these practices to Sandia Corporate Requirements CPR 1.3.2 and 1.3.6 and to a Department of Energy document, 'ASCI Software Quality Engineering: Goals, Principles, and Guidelines'. This document also identifies ASC management and software project teams responsibilities in implementing the software quality practices and in assessing progress towards achieving their software quality goals.

  3. Overcoming Microsoft Excel's Weaknesses for Crop Model Building and Simulations

    Science.gov (United States)

    Sung, Christopher Teh Boon

    2011-01-01

    Using spreadsheets such as Microsoft Excel for building crop models and running simulations can be beneficial. Excel is easy to use, powerful, and versatile, and it requires the least proficiency in computer programming compared to other programming platforms. Excel, however, has several weaknesses: it does not directly support loops for iterative…

  4. MALAYSIAN WEATHER DATA (TRY) FOR ENERGY SIMULATIONS IN BUILDINGS

    DEFF Research Database (Denmark)

    Reimann, Gregers Peter

    2001-01-01

    Detailed energy simulations for buildings in Malaysia have become possible after the recent construction of a Malaysian TRY (Test Reference Year) based on 21 years of hourly weather data from Subang Meteorological Station. The climatic parameters contained in the TRY are dry bulb temperature, wet...

  5. Development of GUI Supported Simulation Software for Hydrofoil Craft

    OpenAIRE

    Meldrum,Alexander

    2015-01-01

    Abstract In this thesis work, a model to simulate motion of hydrofoil equipped craft has been developed. The thesis work only analyzed hydrofoils of V-foil configuration. The model operates in the time domain and gives the user results such as trajectory, speed and stability. When simulating a craft equipped with hydrofoils, there are several things to consider. Accuracy of the simulation, purpose of the simulation, and in what format the results will be delivered to the user. The thesis disc...

  6. Introduction to co-simulation of software and hardware in embedded processor systems

    Energy Technology Data Exchange (ETDEWEB)

    Dreike, P.L.; McCoy, J.A.

    1996-09-01

    From the dawn of the first use of microprocessors and microcontrollers in embedded systems, the software has been blamed for products being late to market, This is due to software being developed after hardware is fabricated. During the past few years, the use of Hardware Description (or Design) Languages (HDLs) and digital simulation have advanced to a point where the concurrent development of software and hardware can be contemplated using simulation environments. This offers the potential of 50% or greater reductions in time-to-market for embedded systems. This paper is a tutorial on the technical issues that underlie software-hardware (swhw) co-simulation, and the current state of the art. We review the traditional sequential hardware-software design paradigm, and suggest a paradigm for concurrent design, which is supported by co-simulation of software and hardware. This is followed by sections on HDLs modeling and simulation;hardware assisted approaches to simulation; microprocessor modeling methods; brief descriptions of four commercial products for sw-hw co-simulation and a description of our own experiments to develop a co-simulation environment.

  7. Commercial Building Energy Baseline Modeling Software: Performance Metrics and Method Testing with Open Source Models and Implications for Proprietary Software Testing

    Energy Technology Data Exchange (ETDEWEB)

    Price, Phillip N.; Granderson, Jessica; Sohn, Michael; Addy, Nathan; Jump, David

    2013-09-01

    The overarching goal of this work is to advance the capabilities of technology evaluators in evaluating the building-level baseline modeling capabilities of Energy Management and Information System (EMIS) software. Through their customer engagement platforms and products, EMIS software products have the potential to produce whole-building energy savings through multiple strategies: building system operation improvements, equipment efficiency upgrades and replacements, and inducement of behavioral change among the occupants and operations personnel. Some offerings may also automate the quantification of whole-building energy savings, relative to a baseline period, using empirical models that relate energy consumption to key influencing parameters, such as ambient weather conditions and building operation schedule. These automated baseline models can be used to streamline the whole-building measurement and verification (M&V) process, and therefore are of critical importance in the context of multi-measure whole-building focused utility efficiency programs. This report documents the findings of a study that was conducted to begin answering critical questions regarding quantification of savings at the whole-building level, and the use of automated and commercial software tools. To evaluate the modeling capabilities of EMIS software particular to the use case of whole-building savings estimation, four research questions were addressed: 1. What is a general methodology that can be used to evaluate baseline model performance, both in terms of a) overall robustness, and b) relative to other models? 2. How can that general methodology be applied to evaluate proprietary models that are embedded in commercial EMIS tools? How might one handle practical issues associated with data security, intellectual property, appropriate testing ‘blinds’, and large data sets? 3. How can buildings be pre-screened to identify those that are the most model-predictable, and therefore those

  8. Structural Simulations and Conservation Analysis -Historic Building Information Model (HBIM

    Directory of Open Access Journals (Sweden)

    C. Dore

    2015-02-01

    Full Text Available In this paper the current findings to date of the Historic Building Information Model (HBIM of the Four Courts in Dublin are presented. The Historic Building Information Model (HBIM forms the basis for both structural and conservation analysis to measure the impact of war damage which still impacts on the building. The laser scan survey was carried out in the summer of 2014 of the internal and external structure. After registration and processing of the laser scan survey, the HBIM was created of the damaged section of the building and is presented as two separate workflows in this paper. The first is the model created from historic data, the second a procedural and segmented model developed from laser scan survey of the war damaged drum and dome. From both models structural damage and decay simulations will be developed for documentation and conservation analysis.

  9. Algebraic software analysis and embedded simulation of a driving robot

    NARCIS (Netherlands)

    Merkx, L.L.F.; Cuijpers, P.J.L.; Duringhof, H.M.

    2007-01-01

    At TNO Automotive the Generic Driving Actuator (GDA) is developed. The GDA is a device capable of driving a vehicle fully automatically using the same interface as a human driverdoes. In this paper, the design of the GDA is discussed. The software and hardware of the GDA and its effect on vehicle be

  10. Free-space laser optical link simulation software

    OpenAIRE

    Vergaz Benito, Ricardo

    2008-01-01

    GDAF (Displays and Photonics Applications Group) in Electronics Technology Department at University Carlos III de Madrid develops a hardware-software application for a communications free-space optical link, in a Project with INSA corp. It aims to substitute the usual radio frequencies link, because of the increasing of bandwidth and the guarantee of privacity. Optics and electronics collaboration is searched.

  11. MATLAB simulation software used for the PhD thesis "Acquisition of Multi-Band Signals via Compressed Sensing

    DEFF Research Database (Denmark)

    2014-01-01

    MATLAB simulation software used for the PhD thesis "Acquisition of Multi-Band Signals via Compressed Sensing......MATLAB simulation software used for the PhD thesis "Acquisition of Multi-Band Signals via Compressed Sensing...

  12. Hygrothermal Numerical Simulation Tools Applied to Building Physics

    CERN Document Server

    Delgado, João M P Q; Ramos, Nuno M M; Freitas, Vasco Peixoto

    2013-01-01

    This book presents a critical review on the development and application of hygrothermal analysis methods to simulate the coupled transport processes of Heat, Air, and Moisture (HAM) transfer for one or multidimensional cases. During the past few decades there has been relevant development in this field of study and an increase in the professional use of tools that simulate some of the physical phenomena that are involved in Heat, Air and Moisture conditions in building components or elements. Although there is a significant amount of hygrothermal models referred in the literature, the vast majority of them are not easily available to the public outside the institutions where they were developed, which restricts the analysis of this book to only 14 hygrothermal modelling tools. The special features of this book are (a) a state-of-the-art of numerical simulation tools applied to building physics, (b) the boundary conditions importance, (c) the material properties, namely, experimental methods for the measuremen...

  13. Simulating control strategies of electrochromic windows : Impacts on indoor climate and energy use in an office building.

    OpenAIRE

    Mäkitalo, Jonatan

    2013-01-01

    The building sector is a one of modern society’s biggest users of energy. In turn, a building’s windows have a significant impact on its energy usage. Electrochromic windows have a thin film on one of the panes, designed to variably change the tint of the window. Thereby the solar heat gain, needed internal lighting and building energy utilization are varied. This thesis uses the simulation software IDA ICE 4.5 to simulate control scenarios for electrochromic windows. The goal is to examine h...

  14. Availability simulation software adaptation to the IFMIF accelerator facility RAMI analyses

    International Nuclear Information System (INIS)

    Highlights: • The reason why IFMIF RAMI analyses needs a simulation is explained. • Changes, modifications and software validations done to AvailSim are described. • First IFMIF RAMI results obtained with AvailSim 2.0 are shown. • Implications of AvailSim 2.0 in IFMIF RAMI analyses are evaluated. - Abstract: Several problems were found when using generic reliability tools to perform RAMI (Reliability Availability Maintainability Inspectability) studies for the IFMIF (International Fusion Materials Irradiation Facility) accelerator. A dedicated simulation tool was necessary to model properly the complexity of the accelerator facility. AvailSim, the availability simulation software used for the International Linear Collider (ILC) became an excellent option to fulfill RAMI analyses needs. Nevertheless, this software needed to be adapted and modified to simulate the IFMIF accelerator facility in a useful way for the RAMI analyses in the current design phase. Furthermore, some improvements and new features have been added to the software. This software has become a great tool to simulate the peculiarities of the IFMIF accelerator facility allowing obtaining a realistic availability simulation. Degraded operation simulation and maintenance strategies are the main relevant features. In this paper, the necessity of this software, main modifications to improve it and its adaptation to IFMIF RAMI analysis are described. Moreover, first results obtained with AvailSim 2.0 and a comparison with previous results is shown

  15. Availability simulation software adaptation to the IFMIF accelerator facility RAMI analyses

    Energy Technology Data Exchange (ETDEWEB)

    Bargalló, Enric, E-mail: enric.bargallo-font@upc.edu [Fusion Energy Engineering Laboratory (FEEL), Technical University of Catalonia (UPC) Barcelona-Tech, Barcelona (Spain); Sureda, Pere Joan [Fusion Energy Engineering Laboratory (FEEL), Technical University of Catalonia (UPC) Barcelona-Tech, Barcelona (Spain); Arroyo, Jose Manuel [Laboratorio Nacional de Fusión por Confinamiento Magnético – CIEMAT, Madrid (Spain); Abal, Javier; De Blas, Alfredo; Dies, Javier; Tapia, Carlos [Fusion Energy Engineering Laboratory (FEEL), Technical University of Catalonia (UPC) Barcelona-Tech, Barcelona (Spain); Mollá, Joaquín; Ibarra, Ángel [Laboratorio Nacional de Fusión por Confinamiento Magnético – CIEMAT, Madrid (Spain)

    2014-10-15

    Highlights: • The reason why IFMIF RAMI analyses needs a simulation is explained. • Changes, modifications and software validations done to AvailSim are described. • First IFMIF RAMI results obtained with AvailSim 2.0 are shown. • Implications of AvailSim 2.0 in IFMIF RAMI analyses are evaluated. - Abstract: Several problems were found when using generic reliability tools to perform RAMI (Reliability Availability Maintainability Inspectability) studies for the IFMIF (International Fusion Materials Irradiation Facility) accelerator. A dedicated simulation tool was necessary to model properly the complexity of the accelerator facility. AvailSim, the availability simulation software used for the International Linear Collider (ILC) became an excellent option to fulfill RAMI analyses needs. Nevertheless, this software needed to be adapted and modified to simulate the IFMIF accelerator facility in a useful way for the RAMI analyses in the current design phase. Furthermore, some improvements and new features have been added to the software. This software has become a great tool to simulate the peculiarities of the IFMIF accelerator facility allowing obtaining a realistic availability simulation. Degraded operation simulation and maintenance strategies are the main relevant features. In this paper, the necessity of this software, main modifications to improve it and its adaptation to IFMIF RAMI analysis are described. Moreover, first results obtained with AvailSim 2.0 and a comparison with previous results is shown.

  16. A CRITICAL STUDY AND COMPARISON OF MANUFACTURING SIMULATION SOFTWARES USING ANALYTIC HIERARCHY PROCESS

    Directory of Open Access Journals (Sweden)

    ASHU GUPTA

    2010-03-01

    Full Text Available In a period of continuous change in global business environment, organizations, large and small, are finding it increasingly difficult to deal with, and adjust to the demands for such change. Simulation is a powerful tool for allowing designers imagines new systems and enabling them to both quantify and observe behavior. Currently the market offers a variety of simulation software packages. Some are less expensive than others. Some are generic and can be used in a wide variety of application areas while others are more specific. Some have powerful features for modeling while others provide only basic features. Modeling approaches and strategies are different for different packages. Companies are seeking advice about the desirable features of software for manufacturing simulation, depending on the purpose of its use. Because of this, the importance of an adequate approach to simulation software evaluation and comparison is apparent. This paper presents a critical evaluation of four widely used manufacturing simulators: NX-IDEAS, Star-CD, Micro Saint Sharp and ProModel. Following a review of research into simulation software evaluation, an evaluation and comparison of the above simulators is performed. This paper illustrates and assesses the role the Analytic Hierarchy Process (AHP played in simulation software evaluation and selection. The main purpose of this evaluation and comparison is to discover the suitability of certain types of simulators for particular purposes.

  17. Software Architecture for Modeling and Simulation of Underwater Acoustic Information Systems

    Institute of Scientific and Technical Information of China (English)

    WANG Xi-min; CAI Zhi-ming

    2009-01-01

    The simulation of underwater acoustic information flow is an important way to research sonar performance and its engagement effectiveness in the ocean environment. This paper analyzes the significance of modeling an open and sophisticated simulation software architecture by object-oriented method, and introduces the modeling processes and expression method of simulation architecture. According to the requirements of simulation system and the underwater acoustic information flow, the logical architecture of simulation software system is modeled by the object-oriented method. A use-case view captured the system requirements. The logical view shows the logical architecture of software system. The simulation software is decomposed into the loose coupling constituent parts by layering and partitioning the packages for maintainability. The design patterns enabled the simulation software to have good expansibility and reusability. The simulation system involving multi-targets and multi-sonar is developed based on the architecture model. Practices show that the model meets the needs for simulating an open and sophisticated system.

  18. Modeling superconducting networks containing Josephson junctions by means of PC-based circuit simulation software

    Energy Technology Data Exchange (ETDEWEB)

    Blackburn, J.A. (Department of Physics and Computing, Wilfrid Laurier University, Waterloo, ON (Canada)); Smith, H.J.T. (Department of Physics, University of Waterloo, Waterloo, ON (Canada))

    1990-09-01

    Software packages are now available with which complex analog electronic circuits can be simulated on desktop computers. Using Micro Cap III it is demonstrated that the modeling capabilities of such software can be extended to include {ital superconducting} networks by means of an appropriate equivalent circuit for a Josephson junction.

  19. The Virtual Genetics Lab II: Improvements to a Freely Available Software Simulation of Genetics

    Science.gov (United States)

    White, Brian T.

    2012-01-01

    The Virtual Genetics Lab II (VGLII) is an improved version of the highly successful genetics simulation software, the Virtual Genetics Lab (VGL). The software allows students to use the techniques of genetic analysis to design crosses and interpret data to solve realistic genetics problems involving a hypothetical diploid insect. This is a brief…

  20. Exploring design support possibilities of building performance simulation tools in building design process

    NARCIS (Netherlands)

    Harputlugil, G.U.; Bedir, M.

    2008-01-01

    Simulation is claimed to be an effective tool in building design to degrade the systems integration matter into comprehension of designers with either a tool or a process related approach. In this study, pre-design phase is considered with energy performance point of view. Aim of the study is explor

  1. Extending the Use of PLC Simulator Software in Student Laboratory Works

    Directory of Open Access Journals (Sweden)

    HABA, C.-G.

    2010-02-01

    Full Text Available This paper presents a system that can extend the use of PLC simulator software in real world experiments. The system is composed of a software and a hardware part. The software is designed to monitor the simulator user interface, to provide user-like inputs to this interface and to exchange data with the hardware part. The hardware is used to interface the simulator running on a PC with external input and output devices. Input signals are converted into inputs for the simulated design; outputs from the simulated design are converted into output signals that control output devices connected to the hardware part. The system can work with various types of simulators and can be used in university labs to design and test digital control systems with low to moderate complexity.

  2. On modeling approach for embedded real-time software simulation testing

    Institute of Scientific and Technical Information of China (English)

    Yin Yongfeng; Liu Bin; Zhong Deming; Jiang Tongrain

    2009-01-01

    Modeling technology has been introduced into software testing field. However, how to carry through the testing modeling effectively is still a difficulty. Based on combination of simulation modeling technology and embedded real-time software testing method, the process of simulation testing modeling is studied first. And then, the supporting environment of simulation testing modeling is put forward. Furthermore, an approach of embedded real-time software simulation testing modeling including modeling of cross-linked equipments of system under testing (SUT), test case, testing scheduling, and testing system service is brought forward. Finally, the formalized description and execution system of testing models are given, with which we can realize real-time, closed loop, and automated system testing for embedded real-time software.

  3. Software Infrastructure to Enable Modeling & Simulation as a Service (M&SaaS) Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This SBIR Phase 2 project will produce a software service infrastructure that enables most modeling and simulation (M&S) activities from code development and...

  4. Applications of Cerius2, software of molecular simulation; Aplicaciones de Cerius2, software de simulacion molecular

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez G, M.E.; Perez A, M.; Gutierrez W, C.E. [ININ, 52750 La Marquesa, Estado de Mexico (Mexico)

    2007-07-01

    Most of the investigations have a theoretical sustenance based on molecular simulation. The area of application of molecular simulation is very wide, in the Materials Technology Department assigned to the Applied Sciences Management have been treated problems about metallic nano structures, glasses, interfaces, and molecules, to sustain and to explain some of the experimental results. Energy calculations are carried out to determine minimum energy structures, for later on to carry out calculations of some of their properties; as well as the images simulation of Electron microscopy and X-ray diffraction. (Author)

  5. DIYModeling: a place for students and faculty to build their own game-quality simulations to enhance learning.

    Science.gov (United States)

    Sones, Bryndol; Wattenberg, Frank

    2009-03-01

    DIYModeling (Do it Yourself Modeling) aims to improve both the quality of learning in the STEM disciplines and the extent to which the very best STEM learning reaches all students by leveraging the power of game- quality modeling and simulation. It builds on earlier work by many people using platforms like Java, Flash and game quality simulations like the Federation of American Scientists' Immune Attack. DIYModeling adds a new element that enables students and faculty to build their own game-quality simulations by specifying the underlying scientific and mathematical models without getting into the details of programming. The DIYModeling team is a consortium of math and basic science faculty from six universities teamed up with the software development company Tietronix Software (an 8a certified company), which does contract work for NASA to build complex software systems including game-quality immersive simulations. The goal of the program is to enable curriculum developers and students to develop game- quality, three-dimensional immersive simulations with educational benefit. Current applications under development include a first-person shooter game environment for use in data collection and statistical analysis, orbital mechanics in executing the Hohlman transfer, and solar power generation. Some pilot tests are planned for use in the spring semester.

  6. Using DOE Commercial Reference Buildings for Simulation Studies: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Field, K.; Deru, M.; Studer, D.

    2010-08-01

    The U.S. Department of Energy developed 256 EnergyPlus models for use in studies that aim to characterize about 70% of the U.S. commercial building stock. Sixteen building types - including restaurants, health care, schools, offices, supermarkets, retail, lodging, and warehouses - are modeled across 16 cities to represent the diversity of U.S. climate zones. Weighting factors have been developed to combine the models in proportions similar to those of the McGraw-Hill Construction Projects Starts Database for 2003-2007. This paper reviews the development and contents of these models and their applications in simulation studies.

  7. Solar passive building in Delhi: numerical simulation and validation

    Energy Technology Data Exchange (ETDEWEB)

    Sodha, M.S.; Garg, S.N.; Sawhney, R.L.; Chandra, R.; Bansal, N.K.; Sharma, A.K.; Gupta, V.K.

    A two floor hostel for married research scholars consisting of 12 apartments was designed and constructed for the composite climate of Delhi; the design incorporates many passive features. Using a modified admittance procedure and Fourier analysis of the periodic parameters, the building was numerically simulated to obtain its thermal performance on an hourly basis. Two apartments of the building (one on the ground floor and one of the first floor) have been experimentally monitored by a microprocessor aided data acquisition system. The observations validate the numerical model. (author).

  8. Addendum to the Building America House Simulation Protocols

    Energy Technology Data Exchange (ETDEWEB)

    Engebrecht-Metzger, C.; Wilson, E.; Horowitz, S.

    2012-12-01

    As Building America (BA) has grown to include a large and diverse cross-section of the home building and retrofit industries, it has become more important to develop accurate, consistent analysis techniques to measure progress towards the program's goals. The House Simulation Protocols (HSP) provides guidance to program partners and managers so that energy savings for new construction and retrofit projects can be compared alongside each other. The HSP provides the program with analysis methods that are proven to be effective and reliable in investigating the energy use of advanced energy systems and of entire houses.

  9. Addendum to the Building America House Simulation Protocols

    Energy Technology Data Exchange (ETDEWEB)

    Engebrecht, C. Metzger [National Renewable Energy Lab. (NREL), Golden, CO (United States); Wilson, E. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Horowitz, S. [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2012-12-01

    As DOE's Building America program has grown to include a large and diverse cross-section of the home building and retrofit industries, it has become more important to develop accurate, consistent analysis techniques to measure progress towards the program’s goals. The House Simulation Protocols (HSP) provide guidance to program partners and managers so that energy savings for new construction and retrofit projects can be compared alongside each other. The HSP provides the program with analysis methods that are proven to be effective and reliable in investigating the energy use of advanced energy systems and of entire houses.

  10. Science laboratory depth of learning: Interactive multimedia simulation and virtual dissection software

    Science.gov (United States)

    Yuza, Steve C.

    The purpose of this study was to determine the effects of interactive multimedia simulations and virtual dissection software on depth of learning among students participating in biology and chemistry laboratory courses. By understanding more about how simulation and virtual dissection software changes depth of learning, educators will have the ability to add these modalities to their current instructional design. The research problems for this study were designed to answer two questions: first, what effect does the use of interactive multimedia simulation software have on the depth of learning within science laboratories? and second, what effect does the use of virtual dissection software have on the depth of learning within science laboratories? A comparative methodology was utilized to collect pretest and posttest data to assess depth of learning for four sampling periods in Introduction to Chemistry and General Biology laboratories. Pretest and posttest statistical comparison was completed via paired t tests, independent sample t tests, and analysis of variance. Statistical findings showed significant differences between participants in their depth of learning after utilizing interactive multimedia simulations in introduction to chemistry. No significant differences were found within general biology participants after utilizing the interactive multimedia simulations. Statistical findings showed significant differences between participants in their depth of learning after utilizing virtual dissection software. These results indicate that participants changed their depth of learning after completing simulation and virtual dissection software when compared to "wet" laboratories learning environments. The research study findings will allow for an instructional design to establish and to use specific simulation and virtual dissection software as components of a science laboratory learning environment. Overall, the use of simulation and virtual dissection software in

  11. Possibilities of Simulation of Fluid Flows Using the Modern CFD Software Tools

    CERN Document Server

    Kochevsky, A N

    2004-01-01

    The article reviews fluid flow models implemented in the leading CFD software tools and designed for simulation of multi-component and multi-phase flows, compressible flows, flows with heat transfer, cavitation and other phenomena. The article shows that these software tools (CFX, Fluent, STAR-CD, etc.) allow for adequate simulation of complex physical effects of different nature, even for problems where performing of physical experiment is extremely difficult.

  12. Software quality and process improvement in scientific simulation codes

    Energy Technology Data Exchange (ETDEWEB)

    Ambrosiano, J.; Webster, R. [Los Alamos National Lab., NM (United States)

    1997-11-01

    This report contains viewgraphs on the quest to develope better simulation code quality through process modeling and improvement. This study is based on the experience of the authors and interviews with ten subjects chosen from simulation code development teams at LANL. This study is descriptive rather than scientific.

  13. Experiences on dynamic simulation software in chemical engineering education

    DEFF Research Database (Denmark)

    Komulainen, Tiina M.; Enemark-rasmussen, Rasmus; Sin, Gürkan;

    2012-01-01

    : basic chemical engineering, operability and safety analysis and process control. User experiences from both teachers and students are presented. The benefits of dynamic simulation as an additional teaching tool are discussed and summarized. The experiences confirm that commercial dynamic simulators...... provide realistic training and can be successfully integrated into undergraduate and graduate teaching, laboratory courses and research....

  14. Simulation Speed Analysis and Improvements of Modelica Models for Building Energy Simulation

    Energy Technology Data Exchange (ETDEWEB)

    Jorissen, Filip; Wetter, Michael; Helsen, Lieve

    2015-09-21

    This paper presents an approach for speeding up Modelica models. Insight is provided into how Modelica models are solved and what determines the tool’s computational speed. Aspects such as algebraic loops, code efficiency and integrator choice are discussed. This is illustrated using simple building simulation examples and Dymola. The generality of the work is in some cases verified using OpenModelica. Using this approach, a medium sized office building including building envelope, heating ventilation and air conditioning (HVAC) systems and control strategy can be simulated at a speed five hundred times faster than real time.

  15. Development of software tools for supporting building clearance and site release at UKAEA

    International Nuclear Information System (INIS)

    UKAEA sites generally have complex histories and have been subject to a diverse range of nuclear operations. Most of the nuclear reactors, laboratories, workshops and other support facilities are now redundant and a programme of decommissioning works in accordance with IAEA guidance is in progress. Decommissioning is being carried out in phases with post- operative activities, care and maintenance and care and surveillance periods between stages to allow relatively short-lived radioactivity to decay. This reduces dose levels to personnel and minimises radioactive waste production. Following on from these stages is an end point phase which corresponds to the point at which the risks to human health and the environment are sufficiently low so that the buildings / land can be released for future use. Unconditional release corresponds to meeting the requirement for 'de-licensing'. Although reaching a de-licensable end point is the desired aim for UKAEA sites, it is recognised that this may take hundreds of years for parts of some UKAEA sites, or may never be attainable at a reasonable cost to the UK taxpayer. Thus on these sites, long term risk management systems are in place to minimise the impact on health, safety and the environment. In order to manage these short, medium and long term liabilities, UKAEA has developed a number of software tools based on good practice guidance. One of these tools in particular is being developed to address building clearance and site release. This tool, IMAGES (Information Management and Geographical Information System) integrates systematic data capture, with database management and spatial assessment (through a Geographical Information System). Details of IMAGES and its applications are discussed in the paper. This paper outlines the approach being adopted by UKAEA for building and site release and the integrated software system, IMAGES, being used to capture, collate, interpret and report results. The key to UKAEA's strategy for

  16. Building a High-Level Process Model for Soliciting Requirements on Software Tools to Support Software Development : Experience Report

    OpenAIRE

    Bider, Ilia; Karapantelakis, Athanasios; Khadka, Nirjal

    2013-01-01

    Use of software tools to support business processes is both a possibility and necessity for both large and small enterprises of today. Given the variety of tools on the market, the question of how to choose the right tools for the process in question or analyze the suitability of the tools already employed arises. The paper presents an experience report of using a high-level business process model for analyzing software tools suitability at a large ICT organization that recently transitioned ...

  17. Applications of Cerius2, software of molecular simulation

    International Nuclear Information System (INIS)

    Most of the investigations have a theoretical sustenance based on molecular simulation. The area of application of molecular simulation is very wide, in the Materials Technology Department assigned to the Applied Sciences Management have been treated problems about metallic nano structures, glasses, interfaces, and molecules, to sustain and to explain some of the experimental results. Energy calculations are carried out to determine minimum energy structures, for later on to carry out calculations of some of their properties; as well as the images simulation of Electron microscopy and X-ray diffraction. (Author)

  18. Radiation exchange between persons and surfaces for building energy simulations

    DEFF Research Database (Denmark)

    Vorre, Mette Havgaard; Jensen, Rasmus Lund; Dreau, Jerome Le

    2015-01-01

    Thermal radiation within buildings is a significant component of thermal comfort. Typically the methods applied for calculating view factors between a person and its building surfaces requires great computational time. This research developed a view factor calculation method suitable for building...... energy simulations. The method calculates view factors by numerical integration of projected area factor. Over time the projected area factor of a person has been simplified by geometrical shapes. These shapes were compared with more complex equations on precision and calculation time. The same was done...... for the resulting view factors, where the results were compared with view factors found by ray tracing. While geometrical simplifications of the human body gave the fastest calculations, the complex equations gave the most accurate results. Non-rectangular surfaces and obstacles were treated by comparing...

  19. Impact of the U.S. National Building Information Model Standard (NBIMS) on Building Energy Performance Simulation

    Energy Technology Data Exchange (ETDEWEB)

    Bazjanac, Vladimir

    2007-08-01

    The U.S. National Institute for Building Sciences (NIBS) started the development of the National Building Information Model Standard (NBIMS). Its goal is to define standard sets of data required to describe any given building in necessary detail so that any given AECO industry discipline application can find needed data at any point in the building lifecycle. This will include all data that are used in or are pertinent to building energy performance simulation and analysis. This paper describes the background that lead to the development of NBIMS, its goals and development methodology, its Part 1 (Version 1.0), and its probable impact on building energy performance simulation and analysis.

  20. IFC BIM-Based Methodology for Semi-Automated Building Energy Performance Simulation

    Energy Technology Data Exchange (ETDEWEB)

    Bazjanac, Vladimir

    2008-07-01

    Building energy performance (BEP) simulation is still rarely used in building design, commissioning and operations. The process is too costly and too labor intensive, and it takes too long to deliver results. Its quantitative results are not reproducible due to arbitrary decisions and assumptions made in simulation model definition, and can be trusted only under special circumstances. A methodology to semi-automate BEP simulation preparation and execution makes this process much more effective. It incorporates principles of information science and aims to eliminate inappropriate human intervention that results in subjective and arbitrary decisions. This is achieved by automating every part of the BEP modeling and simulation process that can be automated, by relying on data from original sources, and by making any necessary data transformation rule-based and automated. This paper describes the new methodology and its relationship to IFC-based BIM and software interoperability. It identifies five steps that are critical to its implementation, and shows what part of the methodology can be applied today. The paper concludes with a discussion of application to simulation with EnergyPlus, and describes data transformation rules embedded in the new Geometry Simplification Tool (GST).

  1. Evacuation Simulation in Kalayaan Residence Hall, up Diliman Using Gama Simulation Software

    Science.gov (United States)

    Claridades, A. R. C.; Villanueva, J. K. S.; Macatulad, E. G.

    2016-09-01

    Agent-Based Modeling (ABM) has recently been adopted in some studies for the modelling of events as a dynamic system given a set of events and parameters. In principle, ABM employs individual agents with assigned attributes and behaviors and simulates their behavior around their environment and interaction with other agents. This can be a useful tool in both micro and macroscale-applications. In this study, a model initially created and applied to an academic building was implemented in a dormitory. In particular, this research integrates three-dimensional Geographic Information System (GIS) with GAMA as the multi-agent based evacuation simulation and is implemented in Kalayaan Residence Hall. A three-dimensional GIS model is created based on the floor plans and demographic data of the dorm, including respective pathways as networks, rooms, floors, exits and appropriate attributes. This model is then re-implemented in GAMA. Different states of the agents and their effect on their evacuation time were then observed. GAMA simulation with varying path width was also implemented. It has been found out that compared to their original states, panic, eating and studying will hasten evacuation, and on the other hand, sleeping and being on the bathrooms will be impedances. It is also concluded that evacuation time will be halved when path widths are doubled, however it is recommended for further studies for pathways to be modeled as spaces instead of lines. A more scientific basis for predicting agent behavior in these states is also recommended for more realistic results.

  2. Benchmarking of dynamic simulation predictions in two software platforms using an upper limb musculoskeletal model.

    Science.gov (United States)

    Saul, Katherine R; Hu, Xiao; Goehler, Craig M; Vidt, Meghan E; Daly, Melissa; Velisar, Anca; Murray, Wendy M

    2015-01-01

    Several opensource or commercially available software platforms are widely used to develop dynamic simulations of movement. While computational approaches are conceptually similar across platforms, technical differences in implementation may influence output. We present a new upper limb dynamic model as a tool to evaluate potential differences in predictive behavior between platforms. We evaluated to what extent differences in technical implementations in popular simulation software environments result in differences in kinematic predictions for single and multijoint movements using EMG- and optimization-based approaches for deriving control signals. We illustrate the benchmarking comparison using SIMM-Dynamics Pipeline-SD/Fast and OpenSim platforms. The most substantial divergence results from differences in muscle model and actuator paths. This model is a valuable resource and is available for download by other researchers. The model, data, and simulation results presented here can be used by future researchers to benchmark other software platforms and software upgrades for these two platforms. PMID:24995410

  3. DBSolve Optimum: a software package for kinetic modeling which allows dynamic visualization of simulation results

    Directory of Open Access Journals (Sweden)

    Gizzatkulov Nail M

    2010-08-01

    Full Text Available Abstract Background Systems biology research and applications require creation, validation, extensive usage of mathematical models and visualization of simulation results by end-users. Our goal is to develop novel method for visualization of simulation results and implement it in simulation software package equipped with the sophisticated mathematical and computational techniques for model development, verification and parameter fitting. Results We present mathematical simulation workbench DBSolve Optimum which is significantly improved and extended successor of well known simulation software DBSolve5. Concept of "dynamic visualization" of simulation results has been developed and implemented in DBSolve Optimum. In framework of the concept graphical objects representing metabolite concentrations and reactions change their volume and shape in accordance to simulation results. This technique is applied to visualize both kinetic response of the model and dependence of its steady state on parameter. The use of the dynamic visualization is illustrated with kinetic model of the Krebs cycle. Conclusion DBSolve Optimum is a user friendly simulation software package that enables to simplify the construction, verification, analysis and visualization of kinetic models. Dynamic visualization tool implemented in the software allows user to animate simulation results and, thereby, present them in more comprehensible mode. DBSolve Optimum and built-in dynamic visualization module is free for both academic and commercial use. It can be downloaded directly from http://www.insysbio.ru.

  4. Assessment of a simulation software for scintillation detector

    International Nuclear Information System (INIS)

    Aim: A Monte Carlo code based on GEANT 3.21 and Linux platform has been developed and adapted to simulate gamma detectors dedicated to specific scintigraphic applications. Materials and methods: GEANT 3.21 is freely available at the CERN program library. It has been written for simulating the interactions of particles with energy > 10 keV. The energy of the gamma rays used in scintigraphic imaging never exceeds 511 keV. Interaction cross-sections for energies between 10 keV and 10 MeV and three media of interest obtained with this program have been compared with data available on the NIST web site. A gamma peroperative hand-held probe has then been simulated. Sensitivity and spatial resolution were evaluated. Results: The high standard deviation for total attenuation coefficient is 4.7% with an uncertainty around 4% given by NIST. The good results obtained have allowed us to go farther in computer programming. In the hope of integrating all the detection lines new routines have been introduced for the simulation of scintillation photons and optical effects. First simulated optical spots have a diameter of 2.5 mm (FWHM) for a 6 mm NaI(Tl) thickness and gamma rays of 140 keV. Conclusion: The code was recently improved with the implementation of a photomultiplier tube and the algorithm for the image reconstruction. In this way, the computed image can be compared with optical image obtained just before the photocathode to improve algorithm. Soon, simulation results will be tested with a mini gamma-camera prototype

  5. Thermal comfort in residential buildings: Comfort values and scales for building energy simulation

    Energy Technology Data Exchange (ETDEWEB)

    Peeters, Leen; D' haeseleer, William [Division of Applied Mechanics and Energy Conversion, University of Leuven (K.U.Leuven), Celestijnenlaan 300 A, B-3001 Leuven (Belgium); Dear, Richard de [Division of Environmental and Life Sciences, Macquarie University, Sydney (Australia); Hensen, Jan [Faculty of Architecture, Building and Planning, Technische Universiteit Eindhoven, Vertigo 6.18, P.O. Box 513, 5600 MB Eindhoven (Netherlands)

    2009-05-15

    Building Energy Simulation (BES) programmes often use conventional thermal comfort theories to make decisions, whilst recent research in the field of thermal comfort clearly shows that important effects are not incorporated. The conventional theories of thermal comfort were set up based on steady state laboratory experiments. This, however, is not representing the real situation in buildings, especially not when focusing on residential buildings. Therefore, in present analysis, recent reviews and adaptations are considered to extract acceptable temperature ranges and comfort scales. They will be defined in an algorithm, easily implementable in any BES code. The focus is on comfortable temperature levels in the room, more than on the detailed temperature distribution within that room. (author)

  6. PHASIM, a sophisticated phased array antenna software simulator implemented in MATLAB 5.2

    NARCIS (Netherlands)

    Keizer, W.P.M.N.

    1999-01-01

    A sophisticated phased array simulator software package for the design and analysis of planar phased array antennas is presented. This simulator is coded in MATLAB version 5.2. Using MATLAB, numerical engineering problems can be solved in a fraction of time of time required by programs coded in FORT

  7. Evaluation of the litcit software for thermal simulation of superficial lasers such as hair removal lasers

    Directory of Open Access Journals (Sweden)

    Shirkavand A

    2007-01-01

    Full Text Available Background and Objectives : In this study, we evaluate LITCIT software for its application as a thermal simulation software for superficial hair removal laser systems. Materials and Methods: Two articles were used as our references. Complete information regarding the tissues, such as optical/thermal properties and geometrical modeling and also the laser systems such as wavelength, spot size, pulse duration and fluence were extracted from these texts. Then, this information regarding the tissues and systems was entered into the LITCIT simulation software. Further, we ran the program and saved the results. Finally, we compared our results with the results in references and evaluated the. Results : Output results of the LITCIT show that they are consistent with the results of references that were calculated with a different thermal modeling. Such a small average error shows the accuracy of the software for simulation and calculating the temperature. Conclusions : This simulating software has a good ability to be used as a treatment planning software for superficial lasers. Thus, it can be used for the optimization of treatment parameters and protocols.

  8. Software for the Simulation of Power Plant Processes

    DEFF Research Database (Denmark)

    Elmegaard, Brian; Houbak, Niels

    2002-01-01

    Modelling of energy systems has been increasingly more important. In particular the dynamic behaviour is critical when operating the systems closer to the limits (either of the process, the materials, the emissions or the economics, etc.). This enforces strong requirements on both the models...... description of many static and/or dynamic energy system or process simulators. It discusses the principal implementation of the model handling in DNA and finally, there is a small example illustrating that too simple component models may under certain circumstances result in an erroneous, singular model....... and their numerical solution with respect to both accuracy and efficiency. In part A of this paper we give a survey on simulation of energy systems, from models and modelling, over numerical methods to implementational techniques. It covers important aspects of the different phases of modelling of a (energy) system...

  9. Treatment planning in radiosurgery: parallel Monte Carlo simulation software

    Energy Technology Data Exchange (ETDEWEB)

    Scielzo, G. [Galliera Hospitals, Genova (Italy). Dept. of Hospital Physics; Grillo Ruggieri, F. [Galliera Hospitals, Genova (Italy) Dept. for Radiation Therapy; Modesti, M.; Felici, R. [Electronic Data System, Rome (Italy); Surridge, M. [University of South Hampton (United Kingdom). Parallel Apllication Centre

    1995-12-01

    The main objective of this research was to evaluate the possibility of direct Monte Carlo simulation for accurate dosimetry with short computation time. We made us of: graphics workstation, linear accelerator, water, PMMA and anthropomorphic phantoms, for validation purposes; ionometric, film and thermo-luminescent techniques, for dosimetry; treatment planning system for comparison. Benchmarking results suggest that short computing times can be obtained with use of the parallel version of EGS4 that was developed. Parallelism was obtained assigning simulation incident photons to separate processors, and the development of a parallel random number generator was necessary. Validation consisted in: phantom irradiation, comparison of predicted and measured values good agreement in PDD and dose profiles. Experiments on anthropomorphic phantoms (with inhomogeneities) were carried out, and these values are being compared with results obtained with the conventional treatment planning system.

  10. An automated methodology development. [software design for combat simulation

    Science.gov (United States)

    Hawley, L. R.

    1985-01-01

    The design methodology employed in testing the applicability of Ada in large-scale combat simulations is described. Ada was considered as a substitute for FORTRAN to lower life cycle costs and ease the program development efforts. An object-oriented approach was taken, which featured definitions of military targets, the capability of manipulating their condition in real-time, and one-to-one correlation between the object states and real world states. The simulation design process was automated by the problem statement language (PSL)/problem statement analyzer (PSA). The PSL/PSA system accessed the problem data base directly to enhance the code efficiency by, e.g., eliminating non-used subroutines, and provided for automated report generation, besides allowing for functional and interface descriptions. The ways in which the methodology satisfied the responsiveness, reliability, transportability, modifiability, timeliness and efficiency goals are discussed.

  11. Nucleonica. Web-based software tools for simulation and analysis

    International Nuclear Information System (INIS)

    The authors present a description of the Nucleonica web-based portal for simulation and analysis for a wide range of commonly encountered nuclear science applications. Advantages of a web-based approach include availability wherever there is internet access, intuitive user-friendly interface, remote access to high-power computing resources, and continual maintenance, improvement, and addition of tools and techniques common to the nuclear science industry. A description of the nuclear data resources, and some applications is given.

  12. Comparison of Engine Simulation Software for Development of Control System

    Directory of Open Access Journals (Sweden)

    KinYip Chan

    2013-01-01

    Full Text Available Most commonly used commercial engine simulation packages generate detailed estimation of the combustion and gas flow parameters. These parameters are required for advanced research on fluid flow and heat transfer and development of geometries of engine components. However, engine control involves different operating parameters. Various sensors are installed into the engine, the combustion performance is recorded, and data is sent to engine control unit (ECU. ECU computes the new set of parameters to make fine adjustments to actuators providing better engine performance. Such techniques include variable valve timing, variable ignition timing, variable air to fuel ratio, and variable compression ratio. In the present study, two of the commercial packages, Ricardo Wave and Lotus Engine Simulation, have been tested on the capabilities for engine control purposes. These packages are compared with an in-house developed package and with reference results available from the literature. Different numerical experiments have been carried out from which it can be concluded that all packages predict similar profiles of pressure and temperature in the engine cylinder. Moreover, those are in reasonable agreement with the reference results while in-house developed package is possible to run simulations with changing speed for engine control purpose.

  13. Advancement of DOE's EnergyPlus Building Energy Simulation Payment

    Energy Technology Data Exchange (ETDEWEB)

    Gu, Lixing [Florida Solar Energy Center, Cocoa, FL (United States); Shirey, Don [Florida Solar Energy Center, Cocoa, FL (United States); Raustad, Richard [Florida Solar Energy Center, Cocoa, FL (United States); Nigusse, Bereket [Florida Solar Energy Center, Cocoa, FL (United States); Sharma, Chandan [Florida Solar Energy Center, Cocoa, FL (United States); Lawrie, Linda [DHL Consulting, Bonn (Germany); Strand, Rick [Univ. of Illinois, Champaign, IL (United States); Pedersen, Curt [COPA, Panama City (Panama); Fisher, Dan [Oklahoma State Univ., Stillwater, OK (United States); Lee, Edwin [Oklahoma State Univ., Stillwater, OK (United States); Witte, Mike [GARD Analytics, Arlington Heights, IL (United States); Glazer, Jason [GARD Analytics, Arlington Heights, IL (United States); Barnaby, Chip [Wrightsoft, Lexington, MA (United States)

    2011-09-30

    EnergyPlus{sup TM} is a new generation computer software analysis tool that has been developed, tested, and commercialized to support DOE's Building Technologies (BT) Program in terms of whole-building, component, and systems R&D (http://www.energyplus.gov). It is also being used to support evaluation and decision making of zero energy building (ZEB) energy efficiency and supply technologies during new building design and existing building retrofits. The 5-year project was managed by the National Energy Technology Laboratory and was divided into 5 budget period between 2006 and 2011. During the project period, 11 versions of EnergyPlus were released. This report summarizes work performed by an EnergyPlus development team led by the University of Central Florida's Florida Solar Energy Center (UCF/FSEC). The team members consist of DHL Consulting, C. O. Pedersen Associates, University of Illinois at Urbana-Champaign, Oklahoma State University, GARD Analytics, Inc., and WrightSoft Corporation. The project tasks involved new feature development, testing and validation, user support and training, and general EnergyPlus support. The team developed 146 new features during the 5-year period to advance the EnergyPlus capabilities. Annual contributions of new features are 7 in budget period 1, 19 in period 2, 36 in period 3, 41 in period 4, and 43 in period 5, respectively. The testing and validation task focused on running test suite and publishing report, developing new IEA test suite cases, testing and validating new source code, addressing change requests, and creating and testing installation package. The user support and training task provided support for users and interface developers, and organized and taught workshops. The general support task involved upgrading StarTeam (team sharing) software and updating existing utility software. The project met the DOE objectives and completed all tasks successfully. Although the EnergyPlus software was enhanced

  14. Identification of the curve of maximum power of photovoltaic modules using simulation software; Identificacao da curva de maxima potencia de modulos FV utilizando softwares de simulacao

    Energy Technology Data Exchange (ETDEWEB)

    Moreira, Andre Pimentel; Ramalho, Geraldo Luis Bezerra; Dias, Samuel Vieira [Centro Federal de Educacao Tecnologica do Ceara (CEFETCE), Fortaleza, CE (Brazil)], emails: apmoreira@cefetce.br, gramalho@cefetce.br, samueldias@cefetce.br; Carvalho, Paulo Cesar Marques de [Universidade Federal do Ceara (PPGEE/UFC), Fortaleza, CE (Brazil). Programa de Pos Graduacao em Engenharia Eletrica], e-mail: carvalho@dee.ufc.br; Borges Neto, Manuel Rangel [Centro Federal de Educacao Tecnologica de Petrolina (CEFETPet), Petrolina, PE (Brazil)], email: rangel@cefetpet.br

    2008-07-01

    This article is presented the study and compared the behaviour of real and simulated a photovoltaic system, through the design and simulation software, Electronic Workbench (MultiSIM 9), AIM-Spice and identifying the point of maximum power (MPP), with the help of modeling software from Matlab. The results of the simulated model were very close to data collected from a real.photovoltaic system. (author)

  15. On model-driven design of robot software using co-simulation

    OpenAIRE

    Jan F. Broenink; Ni, Yunyun; Groothuis, Marcel A.; Menegatti, E

    2010-01-01

    In this paper we show that using co-simulation for robot software design will be more efficient than without co-simulation. We will show an example of the plotter how the co-simulation is helping with the design process. We believe that a collaborative methodology based on model-driven design will improve the chances of closing the design loop early, improving cross-discipline design dialog, and reduce errors, saving cost and time.

  16. Performance measurement of autonomous grasping software in a simulated orbital environment

    Science.gov (United States)

    Norsworthy, Robert S.

    1993-12-01

    The EVAHR (extravehicular activity helper/retriever) robot is being developed to perform a variety of navigation and manipulation tasks under astronaut supervision. The EVAHR is equipped with a manipulator and dexterous end-effector for capture and a laser range imager with pan/tilt for target perception. Perception software has been developed to perform target pose estimation, tracking, and motion estimation for rigid, freely rotating, polyhedral objects. Manipulator grasp planning and trajectory control software has also been developed to grasp targets while avoiding collisions. A software simulation of the EVAHR hardware, orbital dynamics, collision detection, and grasp impact dynamics has been developed to test and measure the performance of the integrated software. Performance measurements include grasp success/failure % and time-to-grasp for a variety of targets, initial target states, and simulated pose estimation computing resources.

  17. Guidelines for Energy Simulation of Commercial Buildings: Final.

    Energy Technology Data Exchange (ETDEWEB)

    Kaplan, Michael; Caner, Phoebe

    1992-03-01

    This report distills the experience gained from intensive computer building simulation work for the Energy Edge project. The purpose of this report is twofold: to use that experience to guide conservation program managers in their use of modeling, and to improve the accuracy of design-phase computer models. Though the main emphasis of the report is on new commercial construction, it also addresses modeling as it pertains to retrofit construction. To achieve these purposes, this report will: (1) discuss the value of modeling for energy conservation programs; (2) discuss strengths and weaknesses of computer models; (3) provide specific guidelines for model input; (4) discuss input topics that are unusually large drivers of energy use and model inaccuracy; (5) provide guidelines for developing baseline models; (6) discuss types of energy conservation measures (ECMs) and building operation that are not suitable to modeling and present possible alternatives to modeling for analysis; and (7) provide basic requirements for model documentation. This project was initiated to determine whether commercial buildings can be designed and constructed to use at least 30% less energy than if they were designed and built to meet the current regional model energy code, the Model Conservation Standards (MCS) developed by the Pacific Northwest Electric Power and Conservation Planning Council. Secondary objectives of the project are to determine the incremental energy savings of a wide variety of ECMs and to compare the predictive accuracy of design-phase models with models that are carefully tuned to monitored building data.

  18. Providing scalable system software for high-end simulations

    Energy Technology Data Exchange (ETDEWEB)

    Greenberg, D. [Sandia National Labs., Albuquerque, NM (United States)

    1997-12-31

    Detailed, full-system, complex physics simulations have been shown to be feasible on systems containing thousands of processors. In order to manage these computer systems it has been necessary to create scalable system services. In this talk Sandia`s research on scalable systems will be described. The key concepts of low overhead data movement through portals and of flexible services through multi-partition architectures will be illustrated in detail. The talk will conclude with a discussion of how these techniques can be applied outside of the standard monolithic MPP system.

  19. The SCEC Broadband Platform: A Collaborative Open-Source Software Package for Strong Ground Motion Simulation and Validation

    Science.gov (United States)

    Silva, F.; Maechling, P. J.; Goulet, C.; Somerville, P.; Jordan, T. H.

    2013-12-01

    Platform facilitates the addition of new scientific methods, which are written by earth scientists in a number of languages such as C, C++, Fortran, and Python. The Broadband Platform's modular design also supports the reuse of existing software modules as building blocks to create new scientific methods. Additionally, the Platform implements a wrapper around each scientific module, converting input and output files to and from the specific formats required (or produced) by individual scientific codes. Working in close collaboration with scientists and research engineers, the SCEC software development group continues to add new capabilities to the Broadband Platform and to release new versions as open-source scientific software distributions that can be compiled and run on many Linux computer systems. Our latest release includes the addition of 3 new simulation methods and several new data products, such as map and distance-based goodness of fit plots. Finally, as the number and complexity of scenarios simulated using the Broadband Platform increase, we have added batching utilities to substantially improve support for running large-scale simulations on computing clusters.

  20. Building Simulation Modelers are we big-data ready?

    Energy Technology Data Exchange (ETDEWEB)

    Sanyal, Jibonananda [ORNL; New, Joshua Ryan [ORNL

    2014-01-01

    Recent advances in computing and sensor technologies have pushed the amount of data we collect or generate to limits previously unheard of. Sub-minute resolution data from dozens of channels is becoming increasingly common and is expected to increase with the prevalence of non-intrusive load monitoring. Experts are running larger building simulation experiments and are faced with an increasingly complex data set to analyze and derive meaningful insight. This paper focuses on the data management challenges that building modeling experts may face in data collected from a large array of sensors, or generated from running a large number of building energy/performance simulations. The paper highlights the technical difficulties that were encountered and overcome in order to run 3.5 million EnergyPlus simulations on supercomputers and generating over 200 TBs of simulation output. This extreme case involved development of technologies and insights that will be beneficial to modelers in the immediate future. The paper discusses different database technologies (including relational databases, columnar storage, and schema-less Hadoop) in order to contrast the advantages and disadvantages of employing each for storage of EnergyPlus output. Scalability, analysis requirements, and the adaptability of these database technologies are discussed. Additionally, unique attributes of EnergyPlus output are highlighted which make data-entry non-trivial for multiple simulations. Practical experience regarding cost-effective strategies for big-data storage is provided. The paper also discusses network performance issues when transferring large amounts of data across a network to different computing devices. Practical issues involving lag, bandwidth, and methods for synchronizing or transferring logical portions of the data are presented. A cornerstone of big-data is its use for analytics; data is useless unless information can be meaningfully derived from it. In addition to technical

  1. Build Less Code, Deliver More Science: An Experience Report on Composing Scientific Environments using Component-based and Commodity Software Platforms

    Energy Technology Data Exchange (ETDEWEB)

    Gorton, Ian [Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Computational Sciences and Math Division; Liu, Yan [Concordia University Montreal, Quebec, (Canada).; Lansing, Carina S. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Computational Sciences and Math Division; Elsethagen, Todd O. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Computational Sciences and Math Division; Kleese van Dam, Kerstin [Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Computational Sciences and Math Division

    2013-07-17

    Modern scientific software is daunting in its diversity and complexity. From massively parallel simulations running on the world’s largest supercomputers, to visualizations and user support environments that manage ever growing complex data collections, the challenges for software engineers are plentiful. While high performance simulators are necessarily specialized codes to maximize performance on specific supercomputer architectures, we argue the vast majority of supporting infrastructure, data management and analysis tools can leverage commodity open source and component-based technologies. This approach can significantly drive down the effort and costs of building complex, collaborative scientific user environments, as well as increase their reliability and extensibility. In this paper we describe our experiences in creating an initial user environment for scientists involved in modeling the detailed effects of climate change on the environment of selected geographical regions. Our approach composes the user environment using the Velo scientific knowledge management platform and the MeDICi Integration Framework for scientific workflows. These established platforms leverage component-based technologies and extend commodity open source platforms with abstractions and capabilities that make them amenable for broad use in science. Using this approach we were able to deliver an operational user environment capable of running thousands of simulations in a 7 month period, and achieve significant software reuse.

  2. Simulation of Natural Gas Saving Through Foam Light Weight Concrete Utilization in Residential Buildings

    Directory of Open Access Journals (Sweden)

    H. Kamalan

    2011-10-01

    Full Text Available Heat loss through walls in houses is remarkable and it shares about 25% of total loss. Utilizing Foam Lightweight Concrete (FLC block in walls may lead to reduction in both gas consumption and greenhouse gas emissions. This is due to heat insulation property of the block and consequently less energy consumption. The main objective of this research was to investigate how FLC block can save natural gas usage within building envelop. A typical residential building was simulated for pressed brick, terra-cotta block, 3D panel, and FLC block by utilizing Behsazan software. Afterwards, building gas consumption and relevant carbon dioxide emissions were compared for abovementioned wall materials, while the building area was constant and its height was variable. Results showed that annual gas reduction attributed to utilizing FLC block walls with different heights varies from 25.7% to 30.6% and from 18.5% to 23.3% in comparison with pressed brick and terra-cotta block walls, respectively. This reduction for 3D panel walls was about 4.6%. Moreover, CO2 emission reduction depending on the number of floors for FLC block walls with pressed brick, terra-cotta block, and 3D panel walls were equal to 20.8 to 24, 15 to 18.3, and 3.4 to 3.8 kg CO2/m2, respectively.

  3. Evaluation and simulation of event building techniques for a detector at the LHC

    CERN Document Server

    Spiwoks, R

    1995-01-01

    The main objectives of future experiments at the Large Hadron Collider are the search for the Higgs boson (or bosons), the verification of the Standard Model and the search beyond the Standard Model in a new energy range up to a few TeV. These experiments will have to cope with unprecedented high data rates and will need event building systems which can offer a bandwidth of 1 to 100GB/s and which can assemble events from 100 to 1000 readout memories at rates of 1 to 100kHz. This work investigates the feasibility of parallel event building sys- tems using commercially available high speed interconnects and switches. Studies are performed by building a small-scale prototype and by modelling this proto- type and realistic architectures with discrete-event simulations. The prototype is based on the HiPPI standard and uses commercially available VME-HiPPI interfaces and a HiPPI switch together with modular and scalable software. The setup operates successfully as a parallel event building system of limited size in...

  4. Integrated EM & Thermal Simulations with Upgraded VORPAL Software

    Energy Technology Data Exchange (ETDEWEB)

    D.N. Smithe, D. Karipides, P. Stoltz, G. Cheng, H. Wang

    2011-03-01

    Nuclear physics accelerators are powered by microwaves which must travel in waveguides between room-temperature sources and the cryogenic accelerator structures. The ohmic heat load from the microwaves is affected by the temperature-dependent surface resistance and in turn affects the cryogenic thermal conduction problem. Integrated EM & thermal analysis of this difficult non-linear problem is now possible with the VORPAL finite-difference time-domain simulation tool. We highlight thermal benchmarking work with a complex HOM feed-through geometry, done in collaboration with researchers at the Thomas Jefferson National Accelerator Laboratory, and discuss upcoming design studies with this emerging tool. This work is part of an effort to generalize the VORPAL framework to include generalized PDE capabilities, for wider multi-physics capabilities in the accelerator, vacuum electronics, plasma processing and fusion R&D fields, and we will also discuss user interface and algorithmic upgrades which facilitate this emerging multiphysics capability.

  5. Spreadsheet Simulation of Airline Reservation Policy Using Multimedia Software

    Directory of Open Access Journals (Sweden)

    Joel Lee Oberstone

    2010-02-01

    Full Text Available A hypothetical business simulation case study using a stand-alone spreadsheet is used to illuminate the rationale of airline overbooking. Because almost everyone has personally encountered the implications of being “bumped,” the selection of this particular case subject is motivated by the belief that half of the problem (or more of teaching a so-phisticated analytical method is in getting the stu-dent's attention. Airline overbooking, it seems, pre-sents such a case. In order for a student to “drill down” the spreadsheet skills, several multimedia tools, Wimba and Jing, are used to produce web hosted, mp4 video files of a library of short films illustrating each step of the spreadsheet operation.

  6. Soft-Rt: software for IMRT simulations based on MCNPX

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira F, T. C. [Centro de Desenvolvimento da Tecnologia Nuclear / CNEN, Av. Pte. Antonio Carlos 6627, 31270-901 Belo Horizonte, Minas Gerais (Brazil); Campos, T., E-mail: tcff01@gmail.com [Universidade Federal de Minas Gerais, Departamento de Engenharia Nuclear, Programa de Pos Graduacao em Ciencias e Tecnicas Nucleares, Av. Pte. Antonio Carlos 6627, 31270-901 Belo Horizonte, Minas Gerais (Brazil)

    2015-10-15

    Intensity Modulated Radiation Therapy (IMRT) is an advanced treatment technique, widely used in external radiotherapy. This paper presents the Soft-Rt which allows the simulation of an entire IMRT treatment protocol. The Soft-Rt performs a full three-dimensional rendering of a set of patient images, including the definitions of region of interest with organs in risk, and the target tumor volume and margins (PTV). Thus, a more accurate analysis and planning can be performed, taking into account the features and orientation of the radiation beams. The exposed tissues as well as the amount of absorbed dose is depicted in healthy and/or cancerous tissues. As conclusion, Soft-Rt can predict dose on the PTV accurately, preserving the surrounding healthy tissues. Soft-Rt is coupled with SISCODES code. The SISCODES code is firstly applied to segment the set of CT or MRI patient images in distinct tissues pointing out its respective density and chemical compositions. Later, the voxel model is export to the Soft-Rt IMRT planning module in which a full treatment planning is created. All geometrical parameters are sent to the general purpose Monte Carlo transport code - MCNP - to simulate the interaction of each incident beam towards to the PTV avoiding organs in risk. The normalized dose results are exported to the Soft-Rt out-module, in which the three-dimensional model visualization is shown in a transparent glass procedure adopting gray scale for the dependence on the mass density of the correlated tissue; while, a color scale to depict dose values in a superimpose protocol. (Author)

  7. Modelling of diesel engine fuelled with biodiesel using engine simulation software

    Science.gov (United States)

    Said, Mohd Farid Muhamad; Said, Mazlan; Aziz, Azhar Abdul

    2012-06-01

    This paper is about modelling of a diesel engine that operates using biodiesel fuels. The model is used to simulate or predict the performance and combustion of the engine by simplified the geometry of engine component in the software. The model is produced using one-dimensional (1D) engine simulation software called GT-Power. The fuel properties library in the software is expanded to include palm oil based biodiesel fuels. Experimental works are performed to investigate the effect of biodiesel fuels on the heat release profiles and the engine performance curves. The model is validated with experimental data and good agreement is observed. The simulation results show that combustion characteristics and engine performances differ when biodiesel fuels are used instead of no. 2 diesel fuel.

  8. 基于 TRNSYS 的某办公建筑负荷计算示例分析%A load computation case for an office building based TRNSYS software

    Institute of Scientific and Technical Information of China (English)

    吴宏伟; 赵永; 吴伟伟

    2015-01-01

    This paper established the building model using ANSYS software and SIMCAD software,introduced the method of doing well buildings load simulation,in order to reduce the larger workload situation using other energy simulation software to additional treatment of load in air condi-tioning system optimization process.%采用TRNSYS软件与SIMCAD软件建立了建筑物模型,并对完成建筑物负荷模拟的方法进行了介绍,以减轻空调系统优化的过程中再额外采用其他的能耗模拟软件来单独处理负荷而引起工作量较大的情况。

  9. An overview of the utility of population simulation software in molecular ecology.

    Science.gov (United States)

    Hoban, Sean

    2014-05-01

    Stochastic simulation software that simultaneously model genetic, population and environmental processes can inform many topics in molecular ecology. These include forecasting species and community response to environmental change, inferring dispersal ecology, revealing cryptic mating, quantifying past population dynamics, assessing in situ management options and monitoring neutral and adaptive biodiversity change. Advances in population demographic-genetic simulation software, especially with respect to individual life history, landscapes and genetic processes, are transforming and expanding the ways that molecular data can be used. The aim of this review is to explain the roles that such software can play in molecular ecology studies (whether as a principal component or a supporting function) so that researchers can decide whether, when and precisely how simulations can be incorporated into their work. First, I use seven case studies to demonstrate how simulations are employed, their specific advantage/necessity and what alternative or complementary (nonsimulation) approaches are available. I also explain how simulations can be integrated with existing spatial, environmental, historical and genetic data sets. I next describe simulation features that may be of interest to molecular ecologists, such as spatial and behavioural considerations and species' interactions, to provide guidance on how particular simulation capabilities can serve particular needs. Lastly, I discuss the prospect of simulation software in emerging challenges (climate change, biodiversity monitoring, population exploitation) and opportunities (genomics, ancient DNA), in order to emphasize that the scope of simulation-based work is expanding. I also suggest practical considerations, priorities and elements of best practice. This should accelerate the uptake of simulation approaches and firmly embed them as a versatile tool in the molecular ecologist's toolbox.

  10. New developments on COSI6, the simulation software for fuel cycle analysis

    International Nuclear Information System (INIS)

    /MT), radiation dose rates (rem/hr at a distance of 1 meter), inventory (Significant Quantities). Those results allows to assess proliferation resistance of fuel cycle or to implement an integrated method. The coupling between COSI6 and ERANOS is on the way: the initial composition of fuel is given to MACCAO software, MACCAO builds an ERANOS input mixing it and a reference case, ERANOS is run and the results returns to COSI. This coupling will be a reference calculation way, which provides other results like end-of-cycle reactivity or core dynamic coefficients. For international collaboration COSI is available in French language or English language, with total compatibility of data sets. COSI is used in France, Italy and Germany within licence agreements. COSI utilisation involves a nice graphical user interface, including graphical post processing. The next evolution will include the coupling with CESAR5.3 (JEFF3.1 nuclear data). Examples of studies and results obtained with COSI are presented in the paper. Specific papers about scenario studies made with COSI are also presented. References: [1] Lionel Boucher, Jean-Paul Grouiller: 'COSI: the complete renewal of the simulation software for fuel cycle analysis', proceedings of ICONE 14, Miami, USA, July 17-20, 2006. [2] G. Rimpault, 'The ERANOS Code and Data System for Fast Reactor Neutronic Analyses', Proc. of the PHYSOR 2002 International Conference on the New Frontiers of Nuclear Technology: Reactor Physics, Safety and High Performance Computing, Seoul, Korea, October 7-10,2002. (authors)

  11. SIMULATION OF THE SYSTEMS WITH RENEWABLE ENERGY SOURCES USING HOMER SOFTWARE

    Directory of Open Access Journals (Sweden)

    FIRINCĂ S.D.

    2015-12-01

    Full Text Available This paper simulates by using the Homer software, distributed energy systems with capacity below 1 MW. Among the renewable energy sources are used wind and solar energy. For photovoltaic panels, we are considering two situations: fixed panels, oriented at 45 ° and panels with tracking system with two axis. Simulation results contain information regarding operation hours of the system throughout the year, energy produced from the renewable energy sources, energy consumption for the load, and excess of electrical energy. The Homer software also allows an economic analysis of these systems.

  12. Software and system development using virtual platforms full-system simulation with wind river simics

    CERN Document Server

    Aarno, Daniel

    2014-01-01

    Virtual platforms are finding widespread use in both pre- and post-silicon computer software and system development. They reduce time to market, improve system quality, make development more efficient, and enable truly concurrent hardware/software design and bring-up. Virtual platforms increase productivity with unparalleled inspection, configuration, and injection capabilities. In combination with other types of simulators, they provide full-system simulations where computer systems can be tested together with the environment in which they operate. This book is not only about what simulat

  13. Building Behavior Simulation by Means of Artificial Neural Network in Summer Conditions

    Directory of Open Access Journals (Sweden)

    Cinzia Buratti

    2014-08-01

    Full Text Available Many studies in Italy showed that buildings are responsible for about 40% of total energy consumption, due to worsening performance of building envelope; in fact, a great number of Italian buildings were built before the 1970s and 80s. In particular, the energy consumptions for cooling are considerably increased with respect to the ones for heating. In order to reduce the cooling energy demand, ensuring indoor thermal comfort, a careful study on building envelope performance is necessary. Different dynamic software could be used in order to evaluate and to improve the building envelope during the cooling period, but much time and an accurate validation of the model are required. However, when a wide experimental data is available, the Artificial Neural Network (ANN can be an alternative, simple and fast tool to use. In the present study, the indoor thermal conditions in many dwellings built in Umbria Region were investigated in order to evaluate the envelope performance. They were recently built and have very low energy consumptions. Based on the experimental data, a feed forward network was trained, in order to evaluate the different envelopes performance. As input parameters the outdoor climatic conditions and the thermal characteristics of building envelopes were set, while, as a target parameter, the indoor air temperature was provided. A good training of network was obtained with a high regression value (0.9625 and a very small error (0.007 °C on air temperature. The network was also used to simulate the envelope behavior with new innovative glazing systems, in order to evaluate and to improve the energy performance.

  14. Bringing simulation to implementation: Presentation of a global approach in the design of passive solar buildings under humid tropical climates

    CERN Document Server

    Garde, François; Celaire, Robert

    2012-01-01

    In early 1995, a DSM pilot initiative has been launched in the French islands of Guadeloupe and Reunion through a partnership between several public and private partners (the French Public Utility EDF, the University of Reunion Island, low cost housing companies, architects, energy consultants, etc...) to set up standards to improve thermal design of new residential buildings in tropical climates. This partnership led to defining optimized bio-climatic urban planning and architectural designs featuring the use of passive cooling architectural principles (solar shading, natural ventilation) and components, as well as energy efficient systems and technologies. The design and sizing of each architectural component on internal thermal comfort in building has been assessed with a validated thermal and airflow building simulation software (CODYRUN). These technical specifications have been edited in a reference document which has been used to build over 300 new pilot dwellings through the years 1996-1998 in Reunion...

  15. Sandia National Laboratories Advanced Simulation and Computing (ASC) software quality plan part 2 mappings for the ASC software quality engineering practices, version 2.0.

    Energy Technology Data Exchange (ETDEWEB)

    Heaphy, Robert; Sturtevant, Judith E.; Hodges, Ann Louise; Boucheron, Edward A.; Drake, Richard Roy; Minana, Molly A.; Hackney, Patricia; Forsythe, Christi A.; Schofield, Joseph Richard, Jr. (,; .); Pavlakos, Constantine James; Williamson, Charles Michael; Edwards, Harold Carter

    2006-09-01

    The purpose of the Sandia National Laboratories Advanced Simulation and Computing (ASC) Software Quality Plan is to clearly identify the practices that are the basis for continually improving the quality of ASC software products. The plan defines the ASC program software quality practices and provides mappings of these practices to Sandia Corporate Requirements CPR001.3.2 and CPR001.3.6 and to a Department of Energy document, ''ASCI Software Quality Engineering: Goals, Principles, and Guidelines''. This document also identifies ASC management and software project teams' responsibilities in implementing the software quality practices and in assessing progress towards achieving their software quality goals.

  16. A multi-objective approach for optimal prioritization of energy efficiency measures in buildings: Model, software and case studies

    International Nuclear Information System (INIS)

    Highlights: • We provide a model for prioritization of energy efficiency measures in buildings. • We examine the case of a new building and one under renovation. • Objective functions are total primary energy consumption and total investment cost. • We provide a software tool that solves this multi-objective optimization problem. • Primary energy consumption and investment cost are inversely proportional. - Abstract: Buildings are responsible for some 40% of the total final energy consumption in the European Union and about 40% of the world’s primary energy consumption. Hence, the reduction of primary energy consumption is important for the overall energy chain. The scope of the current work is to assess the energy efficiency measures in the residential and small commercial sector and to develop a methodology and a software tool for their optimal prioritization. The criteria used for the prioritization of energy efficiency measures in this article are the primary energy consumption and the initial investment cost. The developed methodology used is generic and could be implemented in the case of a new building or retrofitting an existing building. A multi-objective mixed-integer non-linear problem (MINLP) needs to be solved and the weighted sum method is used. Moreover, the novelty of this work is that a software tool has been developed using ‘Matlab®’ which is generic, very simple and time efficient and can be used by a Decision Maker (DM). Two case studies have been developed, one for a new building and one for retrofitting an existing one, in two cities with different climate characteristics. The building was placed in Edinburgh in the UK and Athens in Greece and the analysis showed that the primary energy consumption and the initial investment cost are inversely proportional

  17. CT-Based Brachytherapy Treatment Planning using Monte Carlo Simulation Aided by an Interface Software

    Directory of Open Access Journals (Sweden)

    Vahid Moslemi

    2011-03-01

    Full Text Available Introduction: In brachytherapy, radioactive sources are placed close to the tumor, therefore, small changes in their positions can cause large changes in the dose distribution. This emphasizes the need for computerized treatment planning. The usual method for treatment planning of cervix brachytherapy uses conventional radiographs in the Manchester system. Nowadays, because of their advantages in locating the source positions and the surrounding tissues, CT and MRI images are replacing conventional radiographs. In this study, we used CT images in Monte Carlo based dose calculation for brachytherapy treatment planning, using an interface software to create the geometry file required in the MCNP code. The aim of using the interface software is to facilitate and speed up the geometry set-up for simulations based on the patient’s anatomy. This paper examines the feasibility of this method in cervix brachytherapy and assesses its accuracy and speed. Material and Methods: For dosimetric measurements regarding the treatment plan, a pelvic phantom was made from polyethylene in which the treatment applicators could be placed. For simulations using CT images, the phantom was scanned at 120 kVp. Using an interface software written in MATLAB, the CT images were converted into MCNP input file and the simulation was then performed. Results: Using the interface software, preparation time for the simulations of the applicator and surrounding structures was approximately 3 minutes; the corresponding time needed in the conventional MCNP geometry entry being approximately 1 hour. The discrepancy in the simulated and measured doses to point A was 1.7% of the prescribed dose.  The corresponding dose differences between the two methods in rectum and bladder were 3.0% and 3.7% of the prescribed dose, respectively. Comparing the results of simulation using the interface software with those of simulation using the standard MCNP geometry entry showed a less than 1

  18. Software Development: 3D Animations and Creating User Interfaces for Realistic Simulations

    Science.gov (United States)

    Gordillo, Orlando Enrique

    2015-01-01

    My fall 2015 semester was spent at the Lyndon B. Johnson Space Center working in the Integrated Graphics, Operations, and Analysis Laboratory (IGOAL). My first project was to create a video animation that could tell the story of OMICS. OMICS is a term being used in the field of biomedical science to describe the collective technologies that study biological systems, such as what makes up a cell and how it functions with other systems. In the IGOAL I used a large 23 inch Wacom monitor to draw storyboards, graphics, and line art animations. I used Blender as the 3D environment to sculpt, shape, cut or modify the several scenes and models for the video. A challenge creating this video was to take a term used in biomedical science and describe it in such a way that an 8th grade student can understand. I used a line art style because it would visually set the tone for what we thought was an educational style. In order to get a handle on the perspective and overall feel for the animation without overloading my workspace, I split up the 2 minute animation into several scenes. I used Blender's python scripting capabilities which allowed for the addition of plugins to add or modify tools. The scripts can also directly interact with the objects to create naturalistic patterns or movements. After collecting the rendered scenes, I used Blender's built-in video editing workspace to output the animation. My second project was to write software that emulates a physical system's interface. The interface was to simulate a boat, ROV, and winch system. Simulations are a time and cost effective way to test complicated data and provide training for operators without having to use expensive hardware. We created the virtual controls with 3-D Blender models and 2-D graphics, and then add functionality in C# using the Unity game engine. The Unity engine provides several essential behaviors of a simulator, such as the start and update functions. A framework for Unity, which was developed in

  19. Detailed user behavior in building simulation; Gedetailleerd gebruikersgedrag in gebouwsimulatie

    Energy Technology Data Exchange (ETDEWEB)

    Parys, W.; Saelens, D.; Hens, H. [Afdeling Bouwfysica, K.U. Leuven, Leuven (Belgium)

    2011-02-15

    A global methodology to integrate realistic use of an office building in uncertainty analysis of the energy consumption through a modular and stochastic behavioral model is proposed. The latter incorporates both the stochastic nature of occupant behavior and the inherent variability amongst individuals by defining representative active and passive users. The behavioral model consists of submodels for occupancy, use of shading devices, window operation, control of artificial lighting and heat gains by appliances. The submodels are selected based on a literature review. This methodology is applied in a Monte Carlo analysis of the uncertainty because of the building use on the simulated energy demands of an office building. [Dutch] Er is een globale methode ontwikkeld om realistisch gebouwgebruik in een kantoorgebouw te integreren in een onzekerheidsanalyse voor het energiegebruik. Dit gebeurt via een modulair en stochastisch gedragsmodel. Het gedragsmodel bestaat uit submodellen voor bezetting, gebruik van zonwering, openen van het raam, sturing van het kunstlicht en warmteproductie door kantoorapparatuur. Alle submodellen zijn geselecteerd op basis van een literatuurstudie. Deze methode wordt toegepast in een Monte Carlo-analyse van de onzekerheid door gebouwgebruik op gesimuleerde energiebehoeften van een kantoorgebouw.

  20. Experimental study and advanced CFD simulation of fire safety performance of building external wall insulation system

    Directory of Open Access Journals (Sweden)

    Yan Zhenghua

    2013-11-01

    Full Text Available Large scale fire tests of building external wall insulation system were conducted. In the experiment, thermal-couples were mounted to measure the insulation system surface temperature and the gas temperature inside rooms at the second and third floors. Photos were also taken during the fire tests. The measurement provides information of the ignition and fire spread of the external insulation system which consists of surface protection layer, glass fibre net, bonding thin layer, anchor and the load bearing wall. Comprehensive simulations of the fire tests were carried out using an advanced CFD fire simulation software Simtec (Simulation of Thermal Engineering Complex [1, 2], which is now released by Simtec Soft Sweden, with the turbulent flow, turbulent combustion, thermal radiation, soot formation, convective heat transfer, the fully coupled three dimensional heat transfer inside solid materials, the ‘burn-out' of the surface protection layer and the pyrolysis of the insulation layer, etc, all computed. The simulation is compared with experimental measurement for validation. The simulation well captured the burning and fire spread of the external insulation wall.

  1. Daylight Design of Office Buildings: Optimisation of External Solar Shadings by Using Combined Simulation Methods

    Directory of Open Access Journals (Sweden)

    Javier González

    2015-05-01

    Full Text Available Integrating daylight and energy performance with optimization into the design process has always been a challenge for designers. Most of the building environmental performance simulation tools require a considerable amount of time and iterations for achieving accurate results. Moreover the combination of daylight and energy performances has always been an issue, as different software packages are needed to perform detailed calculations. A simplified method to overcome both issues using recent advances in software integration is explored here. As a case study; the optimization of external shadings in a typical office space in Australia is presented. Results are compared against common solutions adopted as industry standard practices. Visual comfort and energy efficiency are analysed in an integrated approach. The DIVA (Design, Iterate, Validate and Adapt plug-in for Rhinoceros/Grasshopper software is used as the main tool, given its ability to effectively calculate daylight metrics (using the Radiance/Daysim engine and energy consumption (using the EnergyPlus engine. The optimization process is carried out parametrically controlling the shadings’ geometries. Genetic Algorithms (GA embedded in the evolutionary solver Galapagos are adopted in order to achieve close to optimum results by controlling iteration parameters. The optimized result, in comparison with conventional design techniques, reveals significant enhancement of comfort levels and energy efficiency. Benefits and drawbacks of the proposed strategy are then discussed.

  2. A Hardware-in-the-Loop Simulator for Software Development for a Mars Airplane

    Science.gov (United States)

    Slagowski, Stefan E.; Vican, Justin E.; Kenney, P. Sean

    2007-01-01

    Draper Laboratory recently developed a Hardware-In-The-Loop Simulator (HILSIM) to provide a simulation of the Aerial Regional-scale Environmental Survey (ARES) airplane executing a mission in the Martian environment. The HILSIM was used to support risk mitigation activities under the Planetary Airplane Risk Reduction (PARR) program. PARR supported NASA Langley Research Center's (LaRC) ARES proposal efforts for the Mars Scout 2011 opportunity. The HILSIM software was a successful integration of two simulation frameworks, Draper's CSIM and NASA LaRC's Langley Standard Real-Time Simulation in C++ (LaSRS++).

  3. Building intelligence in third-generation training and battle simulations

    Science.gov (United States)

    Jacobi, Dennis; Anderson, Don; von Borries, Vance; Elmaghraby, Adel; Kantardzic, Mehmed; Ragade, Rammohan

    2003-09-01

    Current war games and simulations are primarily attrition based, and are centered on the concept of force on force. They constitute what can be defined as "second generation" war games. So-called "first generation" war games were focused on strategy with the primary concept of mind on mind. We envision "third generation" war games and battle simulations as concentrating on effects with the primary concept being system on system. Thus the third generation systems will incorporate each successive generation and take into account strategy, attrition and effects. This paper will describe the principal advantages and features that need to be implemented to create a true "third generation" battle simulation and the architectural issues faced when designing and building such a system. Areas of primary concern are doctrine, command and control, allied and coalition warfare, and cascading effects. Effectively addressing the interactive effects of these issues is of critical importance. In order to provide an adaptable and modular system that will accept future modifications and additions with relative ease, we are researching the use of a distributed Multi-Agent System (MAS) that incorporates various artificial intelligence methods. The agent architecture can mirror the military command structure from both vertical and horizontal perspectives while providing the ability to make modifications to doctrine, command structures, inter-command communications, as well as model the results of various effects upon one another, and upon the components of the simulation. This is commonly referred to as "cascading effects," in which A affects B, B affects C and so on. Agents can be used to simulate units or parts of units that interact to form the whole. Even individuals can eventually be simulated to take into account the affect to key individuals such as commanders, heroes, and aces. Each agent will have a learning component built in to provide "individual intelligence" based on

  4. Low Cost Helicopter Training Simulator : A Software Case Study from the Brazilian Military Police

    OpenAIRE

    Mendes, Joice B.; Brandao-Ramos, Alexandre Carlos; Mora-Camino, Félix

    2014-01-01

    International audience This work describes a computer based training system to assist the crew members to learn the ground school of helicopter AS350-B2, manufactured by HELIBRAS, a Brazilian helicopter company and widely used by the Armed Forces, Civil and Military Policies and by companies of executive transportation and load lifting. The training system consists of a 1:1 scale aircraft cabin simulator, a system software and a MS Flight Simulator interface. The project is in advanced pha...

  5. Virtual Design Studio (VDS) - Development of an Integrated Computer Simulation Environment for Performance Based Design of Very-Low Energy and High IEQ Buildings

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Yixing [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Zhang, Jianshun [Syracuse Univ., NY (United States); Pelken, Michael [Syracuse Univ., NY (United States); Gu, Lixing [Univ. of Central Florida, Orlando, FL (United States); Rice, Danial [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Meng, Zhaozhou [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Semahegn, Shewangizaw [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Feng, Wei [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Ling, Francesca [Syracuse Univ., NY (United States); Shi, Jun [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Henderson, Hugh [CDH Energy, Cazenovia, NY (United States)

    2013-09-01

    Executive Summary The objective of this study was to develop a “Virtual Design Studio (VDS)”: a software platform for integrated, coordinated and optimized design of green building systems with low energy consumption, high indoor environmental quality (IEQ), and high level of sustainability. This VDS is intended to assist collaborating architects, engineers and project management team members throughout from the early phases to the detailed building design stages. It can be used to plan design tasks and workflow, and evaluate the potential impacts of various green building strategies on the building performance by using the state of the art simulation tools as well as industrial/professional standards and guidelines for green building system design. Engaged in the development of VDS was a multi-disciplinary research team that included architects, engineers, and software developers. Based on the review and analysis of how existing professional practices in building systems design operate, particularly those used in the U.S., Germany and UK, a generic process for performance-based building design, construction and operation was proposed. It distinguishes the whole process into five distinct stages: Assess, Define, Design, Apply, and Monitoring (ADDAM). The current VDS is focused on the first three stages. The VDS considers building design as a multi-dimensional process, involving multiple design teams, design factors, and design stages. The intersection among these three dimensions defines a specific design task in terms of “who”, “what” and “when”. It also considers building design as a multi-objective process that aims to enhance the five aspects of performance for green building systems: site sustainability, materials and resource efficiency, water utilization efficiency, energy efficiency and impacts to the atmospheric environment, and IEQ. The current VDS development has been limited to energy efficiency and IEQ performance, with particular focus

  6. Simulation of Uranyl Nitrate Crystallization Process in Linear Crystallizer Using Simsar Software

    Science.gov (United States)

    Ochoa Bique, A.; Gozhimov, A.; Chursin, Yu; Schmidt, O.

    2016-08-01

    The paper deals with simulation of linear crystallizer work process for the research of technic operating modes and searching the most effective for material's nano-purity achievement. The model is realized by using SimSar software. Importance of device's geometry and process variables are marked. The model was included in the complex's composition of closed nuclear fuel cycle.

  7. Cyclic Voltammetry Simulations with DigiSim Software: An Upper-Level Undergraduate Experiment

    Science.gov (United States)

    Messersmith, Stephania J.

    2014-01-01

    An upper-division undergraduate chemistry experiment is described which utilizes DigiSim software to simulate cyclic voltammetry (CV). Four mechanisms were studied: a reversible electron transfer with no subsequent or proceeding chemical reactions, a reversible electron transfer followed by a reversible chemical reaction, a reversible chemical…

  8. Pipe Flow Simulation Software: A Team Approach to Solve an Engineering Education Problem.

    Science.gov (United States)

    Engel, Renata S.; And Others

    1996-01-01

    A computer simulation program for use in the study of fluid mechanics is described. The package is an interactive tool to explore the fluid flow characteristics of a pipe system by manipulating the physical construction of the system. The motivation, software design requirements, and specific details on how its objectives were met are presented.…

  9. Claire, a tool used for the simulation of events in software tests

    International Nuclear Information System (INIS)

    CLAIRE provides a purely software system which makes it possible to validate the on line applications dealt out to the specifications domain or the code. This tool offers easy graphic design of the application and of its environment. It caries out quite efficiently the simulation of any logged in model and runs the control of the evolution either dynamically or with prerecorded time. (TEC)

  10. Capabilities of Numerical Simulation of Multiphase Flows in Centrifugal Pumps using Modern CFD Software

    CERN Document Server

    Kochevsky, A N

    2005-01-01

    The paper describes capabilities of numerical simulation of liquid flows with solid and/or gas admixtures in centrifugal pumps using modern commercial CFD software packages, with the purpose to predict performance curves of the pumps treating such media. In particular, the approaches and multiphase flow models available in the package CFX-5 are described; their advantages and disadvantages are analyzed.

  11. Simulating SiD Calorimetry: Software Calibration Procedures and Jet Energy Resolution

    OpenAIRE

    Cassell, Ron

    2009-01-01

    Simulated calorimeter performance in the SiD detector is examined. The software calibration procedures are described, as well as the perfect pattern recognition PFA reconstruction. Performance of the SiD calorimeters is summarized with jet energy resolutions from calorimetry only, perfect pattern recognition and the SiD PFA algorithm. Presented at LCWS08[1].

  12. Indoor Environment and Energy Use in Historic Buildings - Comparing Survey Results with Measurements and Simulations

    DEFF Research Database (Denmark)

    Rohdin, P.; Dalewski, M.; Moshfegh, B.

    2012-01-01

    Increasing demand for energy efficiency places new requirements on energy use in historic buildings. Efficient energy use is essential if a historic building is to be used and preserved, especially buildings with conventional uses such as residential buildings and offices. This paper presents...... results which combine energy auditing with building energy simulation and an indoor environment survey among the occupants of the building. Both when comparing simulations with measurements as well as with survey results good agreement was found. The two efficiency measures that are predicted to increase...... energy and thermal performance the most for this group of buildings were reduced infiltration and increasing heat-exchanger efficiency....

  13. Introducing molecular life science students to model building using computer simulations

    NARCIS (Netherlands)

    Aegerter-Wilmsen, T.; Janssen, F.J.J.M.; Kettenis, D.; Sessink, O.; Hartog, R.; Bisseling, T.

    2006-01-01

    Computer simulations can facilitate the building of models of natural phenomena in research, for example in the molecular life sciences. In order to introduce molecular life science students to using computer simulations for model building, a digital case was developed in which students build a mode

  14. Energy simulation and optimization for a small commercial building through Modelica

    Science.gov (United States)

    Rivas, Bryan

    Small commercial buildings make up the majority of buildings in the United States. Energy consumed by these buildings is expected to drastically increase in the next few decades, with a large percentage of the energy consumed attributed to cooling systems. This work presents the simulation and optimization of a thermostat schedule to minimize energy consumption in a small commercial building test bed during the cooling season. The simulation occurs through the use of the multi-engineering domain Dymola environment based on the Modelica open source programming language and is optimized with the Java based optimization program GenOpt. The simulation uses both physically based modeling utilizing heat transfer principles for the building and regression analysis for energy consumption. GenOpt is dynamically coupled to Dymola through various interface files. There are very few studies that have coupled GenOpt to a building simulation program and even fewer studies have used Dymola for building simulation as extensively as the work presented here. The work presented proves Dymola as a viable alternative to other building simulation programs such as EnergyPlus and MatLab. The model developed is used to simulate the energy consumption of a test bed, a commissioned real world small commercial building, while maintaining indoor thermal comfort. Potential applications include smart or intelligent building systems, predictive simulation of small commercial buildings, and building diagnostics.

  15. Product Engineering Class in the Software Safety Risk Taxonomy for Building Safety-Critical Systems

    Science.gov (United States)

    Hill, Janice; Victor, Daniel

    2008-01-01

    When software safety requirements are imposed on legacy safety-critical systems, retrospective safety cases need to be formulated as part of recertifying the systems for further use and risks must be documented and managed to give confidence for reusing the systems. The SEJ Software Development Risk Taxonomy [4] focuses on general software development issues. It does not, however, cover all the safety risks. The Software Safety Risk Taxonomy [8] was developed which provides a construct for eliciting and categorizing software safety risks in a straightforward manner. In this paper, we present extended work on the taxonomy for safety that incorporates the additional issues inherent in the development and maintenance of safety-critical systems with software. An instrument called a Software Safety Risk Taxonomy Based Questionnaire (TBQ) is generated containing questions addressing each safety attribute in the Software Safety Risk Taxonomy. Software safety risks are surfaced using the new TBQ and then analyzed. In this paper we give the definitions for the specialized Product Engineering Class within the Software Safety Risk Taxonomy. At the end of the paper, we present the tool known as the 'Legacy Systems Risk Database Tool' that is used to collect and analyze the data required to show traceability to a particular safety standard

  16. A federated design for a neurobiological simulation engine: the CBI federated software architecture.

    Science.gov (United States)

    Cornelis, Hugo; Coop, Allan D; Bower, James M

    2012-01-01

    Simulator interoperability and extensibility has become a growing requirement in computational biology. To address this, we have developed a federated software architecture. It is federated by its union of independent disparate systems under a single cohesive view, provides interoperability through its capability to communicate, execute programs, or transfer data among different independent applications, and supports extensibility by enabling simulator expansion or enhancement without the need for major changes to system infrastructure. Historically, simulator interoperability has relied on development of declarative markup languages such as the neuron modeling language NeuroML, while simulator extension typically occurred through modification of existing functionality. The software architecture we describe here allows for both these approaches. However, it is designed to support alternative paradigms of interoperability and extensibility through the provision of logical relationships and defined application programming interfaces. They allow any appropriately configured component or software application to be incorporated into a simulator. The architecture defines independent functional modules that run stand-alone. They are arranged in logical layers that naturally correspond to the occurrence of high-level data (biological concepts) versus low-level data (numerical values) and distinguish data from control functions. The modular nature of the architecture and its independence from a given technology facilitates communication about similar concepts and functions for both users and developers. It provides several advantages for multiple independent contributions to software development. Importantly, these include: (1) Reduction in complexity of individual simulator components when compared to the complexity of a complete simulator, (2) Documentation of individual components in terms of their inputs and outputs, (3) Easy removal or replacement of unnecessary or

  17. A federated design for a neurobiological simulation engine: the CBI federated software architecture.

    Directory of Open Access Journals (Sweden)

    Hugo Cornelis

    Full Text Available Simulator interoperability and extensibility has become a growing requirement in computational biology. To address this, we have developed a federated software architecture. It is federated by its union of independent disparate systems under a single cohesive view, provides interoperability through its capability to communicate, execute programs, or transfer data among different independent applications, and supports extensibility by enabling simulator expansion or enhancement without the need for major changes to system infrastructure. Historically, simulator interoperability has relied on development of declarative markup languages such as the neuron modeling language NeuroML, while simulator extension typically occurred through modification of existing functionality. The software architecture we describe here allows for both these approaches. However, it is designed to support alternative paradigms of interoperability and extensibility through the provision of logical relationships and defined application programming interfaces. They allow any appropriately configured component or software application to be incorporated into a simulator. The architecture defines independent functional modules that run stand-alone. They are arranged in logical layers that naturally correspond to the occurrence of high-level data (biological concepts versus low-level data (numerical values and distinguish data from control functions. The modular nature of the architecture and its independence from a given technology facilitates communication about similar concepts and functions for both users and developers. It provides several advantages for multiple independent contributions to software development. Importantly, these include: (1 Reduction in complexity of individual simulator components when compared to the complexity of a complete simulator, (2 Documentation of individual components in terms of their inputs and outputs, (3 Easy removal or replacement of

  18. Building Merger Trees from Cosmological N-body Simulations

    CERN Document Server

    Tweed, D; Blaizot, J; Colombi, S; Slyz, A

    2009-01-01

    Although a fair amount of work has been devoted to growing Monte-Carlo merger trees which resemble those built from an N-body simulation, comparatively little effort has been invested in quantifying the caveats one necessarily encounters when one extracts trees directly from such a simulation. To somewhat revert the tide, this paper seeks to provide its reader with a comprehensive study of the problems one faces when following this route. The first step to building merger histories of dark matter haloes and their subhaloes is to identify these structures in each of the time outputs (snapshots) produced by the simulation. Even though we discuss a particular implementation of such an algorithm (called AdaptaHOP) in this paper, we believe that our results do not depend on the exact details of the implementation but extend to most if not all (sub)structure finders. To illustrate this point, we compare AdaptaHOP s results to the standard Friend- Of-Friend algorithm (FOF), widely utilized in the astrophysical commu...

  19. Accurate Assessment of RSET for Building Fire Based on Engineering Calculation and Numerical Simulation

    Directory of Open Access Journals (Sweden)

    Yan Zhenzhen

    2016-01-01

    Full Text Available In order to obtain the Required Safety Egress Time (RSET accurately, traditional engineering calculation method of evacuation time has been optimized in this paper. Several principles and fact situations were used to optimize the method, such as detecting principle of the fire detecting system, reaction characteristics of staff being in urgent situation, evacuating queuing theory, building structure and the plugging at the porthole. Taking a three-storey KTV as an example, two methods are used to illustrate the reliability and scientific reasonability of the calculation result. The result is deduced by comparing the error (less than 2% at an allowable range between two results. One result is calculated by a modified method of engineering calculation method, and the other one is given based on a Steering model of Pathfinder evacuation simulation software. The optimized RSET has a good feasibility and Accuracy.

  20. Genoviz Software Development Kit: Java tool kit for building genomics visualization applications

    OpenAIRE

    Chervitz Stephen A; Blanchard Steven G; Erwin Ed; Blossom Eric; Nicol John W; Helt Gregg A; Harmon Cyrus; Loraine Ann E

    2009-01-01

    Abstract Background Visualization software can expose previously undiscovered patterns in genomic data and advance biological science. Results The Genoviz Software Development Kit (SDK) is an open source, Java-based framework designed for rapid assembly of visualization software applications for genomics. The Genoviz SDK framework provides a mechanism for incorporating adaptive, dynamic zooming into applications, a desirable feature of genome viewers. Visualization capabilities of the Genoviz...

  1. Sandia National Laboratories Advanced Simulation and Computing (ASC) software quality plan. Part 1 : ASC software quality engineering practices version 1.0.

    Energy Technology Data Exchange (ETDEWEB)

    Minana, Molly A.; Sturtevant, Judith E.; Heaphy, Robert; Hodges, Ann Louise; Boucheron, Edward A.; Drake, Richard Roy; Forsythe, Christi A.; Schofield, Joseph Richard, Jr.; Pavlakos, Constantine James; Williamson, Charles Michael; Edwards, Harold Carter

    2005-01-01

    The purpose of the Sandia National Laboratories (SNL) Advanced Simulation and Computing (ASC) Software Quality Plan is to clearly identify the practices that are the basis for continually improving the quality of ASC software products. Quality is defined in DOE/AL Quality Criteria (QC-1) as conformance to customer requirements and expectations. This quality plan defines the ASC program software quality practices and provides mappings of these practices to the SNL Corporate Process Requirements (CPR 1.3.2 and CPR 1.3.6) and the Department of Energy (DOE) document, ASCI Software Quality Engineering: Goals, Principles, and Guidelines (GP&G). This quality plan identifies ASC management and software project teams' responsibilities for cost-effective software engineering quality practices. The SNL ASC Software Quality Plan establishes the signatories commitment to improving software products by applying cost-effective software engineering quality practices. This document explains the project teams opportunities for tailoring and implementing the practices; enumerates the practices that compose the development of SNL ASC's software products; and includes a sample assessment checklist that was developed based upon the practices in this document.

  2. An algorithm to build mock galaxy catalogues using MICE simulations

    CERN Document Server

    Carretero, J; Gaztanaga, E; Crocce, M; Fosalba, P

    2014-01-01

    We present a method to build mock galaxy catalogues starting from a halo catalogue that uses halo occupation distribution (HOD) recipes as well as the subhalo abundance matching (SHAM) technique. Combining both prescriptions we are able to push the absolute magnitude of the resulting catalogue to fainter luminosities than using just the SHAM technique and can interpret our results in terms of the HOD modelling. We optimize the method by populating with galaxies friends-of-friends dark matter haloes extracted from the Marenostrum Institut de Ci\\`{e}ncies de l'Espai (MICE) dark matter simulations and comparing them to observational constraints. Our resulting mock galaxy catalogues manage to reproduce the observed local galaxy luminosity function and the colour-magnitude distribution as observed by the Sloan Digital Sky Survey. They also reproduce the observed galaxy clustering properties as a function of luminosity and colour. In order to achieve that, the algorithm also includes scatter in the halo mass - gala...

  3. Simulation Technology Laboratory Building 970 hazards assessment document

    International Nuclear Information System (INIS)

    The Department of Energy Order 5500.3A requires facility-specific hazards assessments be prepared, maintained, and used for emergency planning purposes. This hazards assessment document describes the chemical and radiological hazards associated with the Simulation Technology Laboratory, Building 970. The entire inventory was screened according to the potential airborne impact to onsite and offsite individuals. The air dispersion model, ALOHA, estimated pollutant concentrations downwind from the source of a release, taking into consideration the toxicological and physical characteristics of the release site, the atmospheric conditions, and the circumstances of the release. The greatest distances at which a postulated facility event will produce consequences exceeding the ERPG-2 and Early Severe Health Effects thresholds are 78 and 46 meters, respectively. The highest emergency classification is a Site Area Emergency. The Emergency Planning Zone is 100 meters

  4. Simulation Technology Laboratory Building 970 hazards assessment document

    Energy Technology Data Exchange (ETDEWEB)

    Wood, C.L.; Starr, M.D.

    1994-11-01

    The Department of Energy Order 5500.3A requires facility-specific hazards assessments be prepared, maintained, and used for emergency planning purposes. This hazards assessment document describes the chemical and radiological hazards associated with the Simulation Technology Laboratory, Building 970. The entire inventory was screened according to the potential airborne impact to onsite and offsite individuals. The air dispersion model, ALOHA, estimated pollutant concentrations downwind from the source of a release, taking into consideration the toxicological and physical characteristics of the release site, the atmospheric conditions, and the circumstances of the release. The greatest distances at which a postulated facility event will produce consequences exceeding the ERPG-2 and Early Severe Health Effects thresholds are 78 and 46 meters, respectively. The highest emergency classification is a Site Area Emergency. The Emergency Planning Zone is 100 meters.

  5. GNU polyxmass: a software framework for mass spectrometric simulations of linear (bio-polymeric analytes

    Directory of Open Access Journals (Sweden)

    Rusconi Filippo

    2006-04-01

    Full Text Available Abstract Background Nowadays, a variety of (bio-polymers can be analyzed by mass spectrometry. The detailed interpretation of the spectra requires a huge number of "hypothesis cycles", comprising the following three actions 1 put forth a structural hypothesis, 2 test it, 3 (invalidate it. This time-consuming and painstaking data scrutiny is alleviated by using specialized software tools. However, all the software tools available to date are polymer chemistry-specific. This imposes a heavy overhead to researchers who do mass spectrometry on a variety of (bio-polymers, as each polymer type will require a different software tool to perform data simulations and analyses. We developed a software to address the lack of an integrated software framework able to deal with different polymer chemistries. Results The GNU polyxmass software framework performs common (bio-chemical simulations–along with simultaneous mass spectrometric calculations–for any kind of linear bio-polymeric analyte (DNA, RNA, saccharides or proteins. The framework is organized into three modules, all accessible from one single binary program. The modules let the user to 1 define brand new polymer chemistries, 2 perform quick mass calculations using a desktop calculator paradigm, 3 graphically edit polymer sequences and perform (bio-chemical/mass spectrometric simulations. Any aspect of the mass calculations, polymer chemistry reactions or graphical polymer sequence editing is configurable. Conclusion The scientist who uses mass spectrometry to characterize (bio-polymeric analytes of different chemistries is provided with a single software framework for his data prediction/analysis needs, whatever the polymer chemistry being involved.

  6. Simulating past droughts and associated building damages in France

    Directory of Open Access Journals (Sweden)

    T. Corti

    2009-09-01

    Full Text Available Droughts can induce important building damages due to shrinking and swelling of soils, leading to costs as large as for floods in some regions. Previous studies have focused on damage data analysis, geological or constructional aspects. Here, a study investigating the climatic aspects of soil subsidence damage is presented for the first time. We develop a simple model to examine if the meteorology has a considerable impact on the interannual variability of damages from soil subsidence in France. We find that the model is capable of reproducing yearly drought-induced building damages for the time period 1989–2002, thus suggesting a strong meteorological influence. Furthermore, our results reveal a doubling of damages in these years compared to 1961–1990, mainly as a consequence of increasing temperatures. This indicates a link to climate change. We also apply the model to the extreme summer of 2003, which caused a further increase in damage by a factor four, according to a preliminary damage estimate. The simulation result for that year shows strong damage underestimation, pointing to additional sources of vulnerability. Damage data suggest a higher sensitivity to soil subsidence of regions first affected by drought in the 2003 summer, possibly due to a lack of preparedness and adaptation. This is of strong concern in the context of climate change, as densely populated regions in Central Europe and North America are expected to become newly affected by drought in the future.

  7. Development of Software and Strategies for Battery Management System Testing on HIL Simulator

    DEFF Research Database (Denmark)

    Fleischer, Christian; Barreras, Jorge Varela; Christensen, Andreas Elkjær;

    2016-01-01

    In comparison with tests conducted on real Li-ion batteries, Battery Management System (BMS) tests conducted on a Hardware-In-the-Loop (HIL) battery simulator may be more cost and time effective, more flexible and traceable, easier to reproduce and safer beyond the normal range of operation....... This is particularly the case of tests at early stages in the development process or during fault simulation. However, the use of a HIL battery simulator requires the development of software (SW) and strategies for testing. While the possibilities are immense, it should be noted that the greater the level...

  8. Modeling and software implementation of flight system for simulator of a new fighter

    Institute of Scientific and Technical Information of China (English)

    SUI Cheng-cheng; YANG Yong-tian; JIA Rong-zhen

    2004-01-01

    Real-time modeling and simulation of flight system are the key parts of simulator. After describing the architecture of simulator for a newer fighter, author presents the composition of flight system and its mathematic models. In this paper, aircraft is regarded as an elastic flight body. And a new integrated algorithm which can remedy the shortcoming of Euler method and four-element method is used to calculate the Eulerian angles of aircraft. Finally, the software implementation of the flight system is given in the paper.

  9. Application of 3-D numerical simulation software SRIFCAST to produce ductile iron castings

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    Based on a method using numerical simulation equations and their solution schemes for liquid metal flows and heat transfer during mold filling and the solidification process of casting, 3-D numerical simulation software SRIFCAST was created. This includes enmeshment of casting; velocity and temperature fields calculation; displaying iso-temperature lines;velocity vectors and 3-D temperature fields on a Windows 9x operating system. SRIFCAST was applied to produce sound castings of automobile and diesel engines, and also to connect with microstructure simulation for ductile iron castings.

  10. A generic open-source software framework supporting scenario simulations in bioterrorist crises.

    Science.gov (United States)

    Falenski, Alexander; Filter, Matthias; Thöns, Christian; Weiser, Armin A; Wigger, Jan-Frederik; Davis, Matthew; Douglas, Judith V; Edlund, Stefan; Hu, Kun; Kaufman, James H; Appel, Bernd; Käsbohrer, Annemarie

    2013-09-01

    Since the 2001 anthrax attack in the United States, awareness of threats originating from bioterrorism has grown. This led internationally to increased research efforts to improve knowledge of and approaches to protecting human and animal populations against the threat from such attacks. A collaborative effort in this context is the extension of the open-source Spatiotemporal Epidemiological Modeler (STEM) simulation and modeling software for agro- or bioterrorist crisis scenarios. STEM, originally designed to enable community-driven public health disease models and simulations, was extended with new features that enable integration of proprietary data as well as visualization of agent spread along supply and production chains. STEM now provides a fully developed open-source software infrastructure supporting critical modeling tasks such as ad hoc model generation, parameter estimation, simulation of scenario evolution, estimation of effects of mitigation or management measures, and documentation. This open-source software resource can be used free of charge. Additionally, STEM provides critical features like built-in worldwide data on administrative boundaries, transportation networks, or environmental conditions (eg, rainfall, temperature, elevation, vegetation). Users can easily combine their own confidential data with built-in public data to create customized models of desired resolution. STEM also supports collaborative and joint efforts in crisis situations by extended import and export functionalities. In this article we demonstrate specifically those new software features implemented to accomplish STEM application in agro- or bioterrorist crisis scenarios.

  11. A generic open-source software framework supporting scenario simulations in bioterrorist crises.

    Science.gov (United States)

    Falenski, Alexander; Filter, Matthias; Thöns, Christian; Weiser, Armin A; Wigger, Jan-Frederik; Davis, Matthew; Douglas, Judith V; Edlund, Stefan; Hu, Kun; Kaufman, James H; Appel, Bernd; Käsbohrer, Annemarie

    2013-09-01

    Since the 2001 anthrax attack in the United States, awareness of threats originating from bioterrorism has grown. This led internationally to increased research efforts to improve knowledge of and approaches to protecting human and animal populations against the threat from such attacks. A collaborative effort in this context is the extension of the open-source Spatiotemporal Epidemiological Modeler (STEM) simulation and modeling software for agro- or bioterrorist crisis scenarios. STEM, originally designed to enable community-driven public health disease models and simulations, was extended with new features that enable integration of proprietary data as well as visualization of agent spread along supply and production chains. STEM now provides a fully developed open-source software infrastructure supporting critical modeling tasks such as ad hoc model generation, parameter estimation, simulation of scenario evolution, estimation of effects of mitigation or management measures, and documentation. This open-source software resource can be used free of charge. Additionally, STEM provides critical features like built-in worldwide data on administrative boundaries, transportation networks, or environmental conditions (eg, rainfall, temperature, elevation, vegetation). Users can easily combine their own confidential data with built-in public data to create customized models of desired resolution. STEM also supports collaborative and joint efforts in crisis situations by extended import and export functionalities. In this article we demonstrate specifically those new software features implemented to accomplish STEM application in agro- or bioterrorist crisis scenarios. PMID:23971799

  12. The ASTROID Simulator Software Package: Realistic Modelling of High-Precision High-Cadence Space-Based Imaging

    CERN Document Server

    Marcos-Arenal, P; De Ridder, J; Huygen, R; Aerts, C

    2014-01-01

    The preparation of a space-mission that carries out any kind of imaging to detect high-precision low-amplitude variability of its targets requires a robust model for the expected performance of its instruments. This model cannot be derived from simple addition of noise properties due to the complex interaction between the various noise sources. While it is not feasible to build and test a prototype of the imaging device on-ground, realistic numerical simulations in the form of an end-to-end simulator can be used to model the noise propagation in the observations. These simulations not only allow studying the performance of the instrument, its noise source response and its data quality, but also the instrument design verification for different types of configurations, the observing strategy and the scientific feasibility of an observing proposal. In this way, a complete description and assessment of the objectives to expect from the mission can be derived. We present a high-precision simulation software packag...

  13. An Analysis and Design of the Virtual Simulation Software Based on Pattern

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The paper makes a detailed analysis and design of the Vega application software based on Windows NT platform. It includes object-oriented software analysis and design, design patterns and Windows kernel mechanism. The paper brings forward a design pattern, a fence-pattern, and depends on this pattern. Windows NT memory mapped files adopted, the paper presents a Vega application solution based on the multi-process technique. Although the design solution is developing under a real-time simulation system, it is established at the clear analysis of the Vega system, therefore, the solution has extensive practicability and many uses.

  14. Experimental Study Using Functional Size Measurement in Building Estimation Models for Software Project Size

    NARCIS (Netherlands)

    Condori Fernandez, Nelly; Daneva, Maya; Buglione, Luigi; Ormandjieva, Olga; Ormandjieva, O.; Constantinides, C.; Abran, A.; Lee, R.

    2010-01-01

    This paper reports on an experiment that investigates the predictability of software project size from software product size. The predictability research problem is analyzed at the stage of early requirements by accounting the size of functional requirements as well as the size of non-functional req

  15. Building Software Development Capacity to Advance the State of Educational Technology

    Science.gov (United States)

    Luterbach, Kenneth J.

    2013-01-01

    Educational technologists may advance the state of the field by increasing capacity to develop software tools and instructional applications. Presently, few academic programs in educational technology require even a single computer programming course. Further, the educational technologists who develop software generally work independently or in…

  16. Discovering Software License Constraints: Identifying a Binary’s Sources by Tracing Build Processes

    NARCIS (Netherlands)

    Van der Burg, S.; Davies, J.; Dolstra, E.; German, D.M.; Hemel, A.

    2012-01-01

    With the current proliferation of open source software components, intellectual property in general, and copyright law in particular, has become a critical non-functional requirement for software systems. A key problem in license compliance engineering is that the legal constraints on a product depe

  17. APPLICATION OF DYNAMIC SIMULATIONS IN THE ANALYSIS OF MEASURES FOR IMPROVING ENERGY EFFICIENCY OF BUILDINGS

    OpenAIRE

    DRAGICEVIC SNEZANA M.

    2016-01-01

    One of the most commonly used methods for improving energy performances of buildings is reducing heating energy consumption. This paper shows a comparative analysis of building energy demand for space heating based on case studies in which building modifications were made with insulating materials of building envelopes and with different window types. For the analysis, a public building with 6 floors, located in Belgrade, was selected. For a dynamical simulation and evaluation of the applied ...

  18. The Multiscale Systems Immunology project: software for cell-based immunological simulation

    Directory of Open Access Journals (Sweden)

    Kepler Thomas B

    2008-04-01

    Full Text Available Abstract Background Computer simulations are of increasing importance in modeling biological phenomena. Their purpose is to predict behavior and guide future experiments. The aim of this project is to model the early immune response to vaccination by an agent based immune response simulation that incorporates realistic biophysics and intracellular dynamics, and which is sufficiently flexible to accurately model the multi-scale nature and complexity of the immune system, while maintaining the high performance critical to scientific computing. Results The Multiscale Systems Immunology (MSI simulation framework is an object-oriented, modular simulation framework written in C++ and Python. The software implements a modular design that allows for flexible configuration of components and initialization of parameters, thus allowing simulations to be run that model processes occurring over different temporal and spatial scales. Conclusion MSI addresses the need for a flexible and high-performing agent based model of the immune system.

  19. A Software Package Using a Mesh-grid Method for Simulating HPGe Detector Efficiencies

    Energy Technology Data Exchange (ETDEWEB)

    Kevin Jackman

    2009-10-01

    Traditional ways of determining the absolute full-energy peak efficiencies of high-purity germanium (HPGe) detectors are often time consuming, cost prohibitive, or not feasible. A software package, KMESS (Kevin’s Mesh Efficiency Simulator Software), was developed to assist in predicting these efficiencies. It uses a semiempirical mesh-grid method and works for arbitrary source shapes and counting geometries. The model assumes that any gamma-ray source shape can be treated as a large enough collection of point sources. The code is readily adaptable, has a web-based graphical front-end, and could easily be coupled to a 3D scanner. As will be shown, this software can estimate absolute full-energy peak efficiencies with good accuracy in reasonable computation times. It has applications to the field of gamma-ray spectroscopy because it is a quick and accurate way to assist in performing quantitative analyses using HPGe detectors.

  20. A software package using a mesh-grid method for simulating HPGe detector efficiencies

    Energy Technology Data Exchange (ETDEWEB)

    Gritzo, Russell E [Los Alamos National Laboratory; Jackman, Kevin R [REMOTE SENSING LAB; Biegalski, Steven R [UT AUSTIN

    2009-01-01

    Traditional ways of determining the absolute full-energy peak efficiencies of high-purity germanium (HPGe) detectors are often time consuming, cost prohibitive, or not feasible. A software package, KMESS (Kevin's Mesh Efficiency Simulator Software), was developed to assist in predicting these efficiencies. It uses a semiempirical mesh-grid method and works for arbitrary source shapes and counting geometries. The model assumes that any gamma-ray source shape can be treated as a large enough collection of point sources. The code is readily adaptable, has a web-based graphical front-end. and could easily be coupled to a 3D scanner. As will be shown. this software can estimate absolute full-energy peak efficiencies with good accuracy in reasonable computation times. It has applications to the field of gamma-ray spectroscopy because it is a quick and accurate way to assist in performing quantitative analyses using HPGe detectors.

  1. Software for numerical simulations in the field of quantum technologies based on parallel programming

    Science.gov (United States)

    Adamyan, H. H.; Adamyan, N. H.; Gevorgyan, N. T.; Gevorgyan, T. V.; Kryuchkyan, G. Yu.

    2008-05-01

    We provide a software package for numerical simulations and modeling of complex quantum systems in the presence of dissipation and decoherence for a wider class of problems in the field of quantum technologies. This software is based on the method of quantum trajectories usually used for calculations of the density matrix. An important part of this Toolkit is the universal user interface, which is based on Tool Command Language (TCL) scripting language. It is elaborated in such a manner that the system description and system parameters should not be included in the source code. The core is implemented as a generic set of C++ classes, which can be efficiently reused for modeling of a wide range of photonic systems. The code has been written so as to facilitate optimization of the performance without breaking the object-orientedness of the design. We demonstrate that this software package is very useful for high performance parallel calculations on the Cluster.

  2. Assessment of Computer Simulation Software and Process Data for High Pressure Die Casting of Magnesium

    Energy Technology Data Exchange (ETDEWEB)

    Sabau, Adrian S [ORNL; Hatfield, Edward C [ORNL; Dinwiddie, Ralph Barton [ORNL; Kuwana, Kazunori [University of Kentucky; Viti, Valerio [University of Kentucky, Lexington; Hassan, Mohamed I [University of Kentucky, Lexington; Saito, Kozo [University of Kentucky

    2007-09-01

    Computer software for the numerical simulation of solidification and mold filling is an effective design tool for cast structural automotive magnesium components. A review of commercial software capabilities and their validation procedures was conducted. Aside form the software assessment, the program addressed five main areas: lubricant degradation, lubricant application, gate atomization, and heat transfer at metal mold interfaces. A test stand for lubricant application was designed. A sensor was used for the direct measurement of heat fluxes during lubricant application and casting solidification in graphite molds. Spray experiments were conducted using pure deionized water and commercial die lubricants. The results show that the sensor can be used with confidence for measuring heat fluxes under conditions specific to the die lube application. The data on heat flux was presented in forms suitable for use in HPDC simulation software. Severe jet breakup and atomization phenomena are likely to occur due to high gate velocities in HPDC. As a result of gate atomization, droplet flow affects the mold filling pattern, air entrapment, skin formation, and ensuing defects. Warm water analogue dies were designed for obtaining experimental data on mold filling phenomena. Data on break-up jet length, break-up pattern, velocities, and droplet size distribution were obtained experimentally and was used to develop correlations for jet break-up phenomena specific to die casting gate configurations.

  3. Simulation software of radioactive decay, β and γ disintegration of cesium 137

    International Nuclear Information System (INIS)

    We present a software dedicated to radioactivity studies, in particular to radioactive decays. The software has been developed to model the C.R.A.B. (Alpha Beta radioactivity counter), a device constructed in the seventies for use as an educational support for radioactive studies in french schools. The evolution of safety rules prevents nowadays the use of such educational devices in schools. At the origin, the software was developed to train students before a tutorial session using a real radioactive source of Cesium 237 and now the software substitutes entirely the experiments. Indeed, the simulation reassures parents and students who are always afraid of radioactivity. Various studies are proposed: study of the exponential nuclear radioactive decay on a network of radioactive nuclei and roll of dices, Poisson and Gauss distributions, influence of the source-detector distance, radiation absorption by aluminum or by lead. This software is currently used either in the last year of high school or at the University for students in their first year. (author)

  4. Experimental Study Using Functional Size Measurement in Building Estimation Models for Software Project Size

    OpenAIRE

    Condori Fernandez, Nelly; Daneva, Maya (Ed.); Buglione, Luigi; Ormandjieva, Olga; Ormandjieva, O.; Constantinides, C; Abran, A.; Lee, R

    2010-01-01

    This paper reports on an experiment that investigates the predictability of software project size from software product size. The predictability research problem is analyzed at the stage of early requirements by accounting the size of functional requirements as well as the size of non-functional requirements. The experiment was carried out with 55 graduate students in Computer Science from Concordia University in Canada. In the experiment, a functional size measure and a project size measure ...

  5. Casting directly from a computer model by using advanced simulation software FLOW-3D Cast ®

    Directory of Open Access Journals (Sweden)

    M. Sirviö

    2009-01-01

    Full Text Available ConiferRob - A patternless casting technique, originally conceived at VTT Technical Research Centre of Finland and furtherdeveloped at its spin-off company, Simtech Systems, offers up to 40% savings in product development costs, and up to two months shorterdevelopment times compared to conventional techniques. Savings of this order can be very valuable on today's highly competitivemarkets. Casting simulation is commonly used for designing of casting systems. However, most of the software are today old fashioned and predicting just shrinkage porosity. Flow Science, VTT and Simtech have developed new software called FLOW-3D Cast ® , whichcan simulate surface defects, air entrainment, filters, core gas problems and even a cavitation.

  6. Advanced Simulation of Fuel Behavior Under Irradiation in the Pleiades Software Environment

    International Nuclear Information System (INIS)

    A “multi design” new generation software environment called PLEIADES has been developed by the CEA in the framework of a research cooperative program with EDF and AREVA. In this general software environment, ALCYONE is the PWR fuel performance simulation code. It is a multi-dimensional simulation software (1D, 2D and 3D), with applications for normal, transient and accidental conditions. It also has several levels of modelling, from industrial models to mechanistic ones depending on the amount of multi-scale details expected in the results of the simulation. The different dimensional schemes share the same thermomechanical Finite Element Method code CAST3M. The 1D scheme describes the behaviour of the whole rod and gives access to integral values such as rod fission gas release, clad profilometry and elongation. The 3D scheme allows a local study of Pellet Clad Mechanical Interaction (PCMI) by modelling the thermo-mechanical behaviour of one or several pellet fragments and overlying cladding. The 2D scheme is a compromise between calculation time and the accuracy of the local fuel description. Recently the 3D approach has been extended to a short fuel rod model in order to simulate the ballooning phenomenon during accidental transients. In this paper, we will present the general description of the ALCYONE simulation code in the PLEIADES environment (general computation algorithm, advanced fission gas model for UO2 and MOX fuels, 3D computation scheme). A focus will be presented on specific developments which have already been done to simulate accidental conditions such as LOCA and fast transients for different dimensional models. (author)

  7. Casting directly from a computer model by using advanced simulation software FLOW-3D Cast ®

    OpenAIRE

    M. Sirviö; M. Woś

    2009-01-01

    ConiferRob - A patternless casting technique, originally conceived at VTT Technical Research Centre of Finland and furtherdeveloped at its spin-off company, Simtech Systems, offers up to 40% savings in product development costs, and up to two months shorterdevelopment times compared to conventional techniques. Savings of this order can be very valuable on today's highly competitivemarkets. Casting simulation is commonly used for designing of casting systems. However, most of the software are ...

  8. Software development for forest growth models and management. CORKFITS: web based growth simulator

    OpenAIRE

    Surový, Peter; Vones, Petr; Ribeiro, Nuno de Almeida

    2011-01-01

    New methods of forest management and the study of their impact on sustainability are strongly dependent on realistic mathematical modelling. The complexity of the models however, makes the use of computational power, and thus the incorporation of knowledge from computer science and research, indispensable. In this paper we wish to demonstrate the development of a simulator for the growth and production of cork oak woodlands – montados. The software is divided into three sub-modules, sharing a...

  9. PANTHERE, simulation software of dose flow rates for complex nuclear installations

    International Nuclear Information System (INIS)

    The authors present the PANTHERE simulation software developed by EDF-SEPTEN to determine gamma dose flow rate in any point of complex industrial installations. They present the current industrial version (PANTHEREV1) and its different applications, and more particularly an investigation in the field of qualification of hardware under irradiation in case of severe accident. They present the currently under development version (PANTHEREV2) which will be exploited in 2011

  10. Building a Distributed Secure System on Multi-Agent Platform Depending on the Principles of Software Engineering Life Cycle

    Directory of Open Access Journals (Sweden)

    Dr.Ghossoon M.Waleed Al-Saadoo

    2010-12-01

    Full Text Available Today, applications in mobile multi-agent systems require a high degree of confidence that running code inside the system will not be malicious. Also any malicious agents must be identified and contained. Since the inception of mobile agents, the intruder has been addressed using a multitude of techniques, but many of these implementations have only addressed concerns from the position of either the platform or the agents. Very few approaches have undertaken the problem of mobile agent security from both perspectives simultaneously. Furthermore, no middleware exists to facilitate provisioning of the required security qualities of mobile agent software while extensively focusing on easing the software development burden.The aim is to build a distributed secure system using multi-agents by applying the principles of software engineering. The objectives of this paper is to introduce multi agent systems that enhance security rules through the access right to building a distributed secure system integrating with principles of software engineering system life cycle, as well as satisfy the security access right for both platform and agents to improve the three characteristics of agents adaptively, mobility and flexibility, which is the main problem that depending on the principles of software engineering life cycle. There are 3 characteristics that satisfied using agent; mobility, adaptively and flexibility. Adaptively (which is the capability to respond to other agencies and/or environment to some degree. Mobility (the ability to transport itself from one environment to another and Flexibility (can be defined to include the following properties; responsive, pro-active and social. This project based on the platform of PHP and MYSQL (Database which can be presented in a website. The implementation and test are applied in both Linux and Windows platforms, including Linux Red Hat 8, Linux Ubuntu 6.06 LTS and Microsoft Windows XP Professional. Since PHP

  11. Study of a Random Navigation on the Web Using Software Simulation

    Directory of Open Access Journals (Sweden)

    Mirella-Amelia Mioc

    2015-12-01

    Full Text Available The general information about the World Wide Web are especially nowadays useful in all types of communications. The most used model for simulating the functioning of the web is through the hypergraph. The surfer model was chosen from the known algorithms used for web navigation in this simulation. The main objective of this paper is to analyze the Page Rank and its dependency of Markov Chain Length. In this paper some software implementation are presented and used. The experimental results demonstrate the differences between the Algorithm Page Rank and Experimental Page Rank.

  12. A software framework for the portable parallelization of particle-mesh simulations

    DEFF Research Database (Denmark)

    Sbalzarini, I.F.; Walther, Jens Honore; Polasek, B.;

    2006-01-01

    Abstract: We present a software framework for the transparent and portable parallelization of simulations using particle-mesh methods. Particles are used to transport physical properties and a mesh is required in order to reinitialize the distorted particle locations, ensuring the convergence...... range of applications, and it enables orders of magnitude increase in the number of computational elements employed in particle methods. We demonstrate the performance and scalability of the library on several problems, including the first-ever billion particle simulation of diffusion in real biological...

  13. Simulation of Extractive Distillation for Recycling Tetrahydrofuran from Pharmaceutical Wastewater with Chem CAD Software

    Directory of Open Access Journals (Sweden)

    Xiaoguang Wang

    2013-05-01

    Full Text Available The functions and application of ChemCAD simulation software was introduced. Mathematical model of extraction distillation process was established. The extractive distillation process for preparation of tetrahydrofuran (THF was simulated by SCDS rectification model in ChemCAD software, methanol-THF-solution and ethanedol-lithium chloride solution as extractant. Influence of extraction agent on vapor-liquid equilibrium curve of methanol-THF system and effects of theoretical plate number, feed and extractant input positions, extraction agent ratio (m(chlorinated lithium: v(ethanediol, extractant ratio (m (extractant: m(feed and reflux ratio on tower top mass fraction of THF were investigated. The results of simulation were compared with experimental data. Under optimum extraction distillation conditions: theoretical plate 30, extractant plate 6, feed plate 18, extraction agent ratio 0.24g/mL, extractant ratio 2.7 and reflux ratio 5.0, mass fraction of THF on tower top can reach 97.2%. The distribution characteristic parameters of the column were simulated. The results of simulation and experimental data agree satisfactorily.

  14. Investigations of a long-distance 1000 MW heat transport system with apros simulation software

    International Nuclear Information System (INIS)

    The paper presents a computer model and simulation results for a long-distance heat transport system. The modeled system is designed to transport 1000 MW of heat over a distance of 77 km for district heating purposes. This kind of a nuclear CHP option is being investigated as one option within Fortum's new Loviisa 3 NPP project. The heat produced in Loviisa NPP would be utilized for the district heating of Helsinki metropolitan area in Finland. The objective of this study is to carry out simulations to examine the behaviour of such a largescale heat transport system and to perform safety analyses for the purposes of preliminary planning of a heat transport system between Loviisa and Helsinki. The model was created using APROS (Advanced Process Simulation Environment) simulation software

  15. Simulation software for CRH2 and CRH3 traction driver systems based on SIMULINK and VC

    Institute of Scientific and Technical Information of China (English)

    Qin-fen LU; Bin WANG; Xiao-yan HUANG; Ji-en MA; You-tong FANG; Jin YU; Wen-ping CAO

    2011-01-01

    Simulation models of traction driver systems were established using SIMULINK,according to the actual structure and parameters of China Railway High-Speed 2 (CRH2) and China Railway High-Speed 3 (CRH3) trains.In these models,the traction motor adopts transient current control and an indirect rotor magnetic field orientation vector control strategy,and the traction converter uses sinusoidal pulse width modulation (SPWM) and space vector pulse width modulation (SVPWM) methods.After these models are transformed in VC++ program,and a friendly interface and data processing system are constructed.simulation software is obtained for CRH2 and CRH3 traction driver systems.On this basis,the operational performance of a traction converter was simulated and analyzed at different train speeds and in different conditions.The simulation results can provide a reference for the actual design and production of a traction converter.

  16. Software Radio Implementation of RF Short-Wave Wideband Channel Simulator

    Institute of Scientific and Technical Information of China (English)

    DINGYahui; GANLiangcai; XIELing

    2005-01-01

    A novel radio frequency short-wave wideband channel simulator which can be used to evaluate wideband SW communication system performance over shortwave channel with time-variant and dispersive property, is proposed in this paper. The channel simulator consists of RF transmitting, receiving module and baseband digital signal processing module. In particular, a wideband channel model is introduced into this project that can exhibit various short-wave characteristic such as delay spread, Doppler shift, Doppler spread and all kinds of noise and interference. At the same time, this paper makes a great improvement on SW wideband channel model proposed in Ref.[2] and utilizes some idea of software radio to design the channel simulator's RF part. Therefore, the channel simulator described in the paper can be applicable to not only theoretical research, but also practical application.

  17. Toward high-speed 3D nonlinear soft tissue deformation simulations using Abaqus software.

    Science.gov (United States)

    Idkaidek, Ashraf; Jasiuk, Iwona

    2015-12-01

    We aim to achieve a fast and accurate three-dimensional (3D) simulation of a porcine liver deformation under a surgical tool pressure using the commercial finite element software Abaqus. The liver geometry is obtained using magnetic resonance imaging, and a nonlinear constitutive law is employed to capture large deformations of the tissue. Effects of implicit versus explicit analysis schemes, element type, and mesh density on computation time are studied. We find that Abaqus explicit and implicit solvers are capable of simulating nonlinear soft tissue deformations accurately using first-order tetrahedral elements in a relatively short time by optimizing the element size. This study provides new insights and guidance on accurate and relatively fast nonlinear soft tissue simulations. Such simulations can provide force feedback during robotic surgery and allow visualization of tissue deformations for surgery planning and training of surgical residents. PMID:26530842

  18. Combining building thermal simulation methods and LCA methods

    DEFF Research Database (Denmark)

    Pedersen, Frank; Hansen, Klaus; Wittchen, Kim Bjarne;

    2008-01-01

    of buildings (as expressed in EU Directive 2002/91/EC), may in the future be supplemented by requirements to the environmental impact of buildings. This can be seen by the fact that EU recently has given EN mandate to prepare standards for environmental assessment of buildings (CEN/TC 350)....

  19. A comparative analysis of currently used microscopic and macroscopic traffic simulation software

    International Nuclear Information System (INIS)

    The significant advancements of information technology have contributed to increased development of traffic simulation models. These include microscopic models and broadening the areas of applications ranging from the modeling of specific components of the transportation system to a whole network having different kinds of intersections and links, even in a few cases combining travel demand models. This paper mainly reviews the features of traditionally used macroscopic and microscopic traffic simulation models along with a comparative analysis focusing on freeway operations, urban congested networks, project-level emission modeling, and variations in delay and capacity estimates. The models AIMSUN, CORSIM, and VISSIM are found to be suitable for congested arterials and freeways, and integrated networks of freeways and surface streets. The features of AIMSUN are favorable for creating large urban and regional networks. The models AIMSUN, PARAMICS, INTEGRATION, and CORSIM are potentially useful for Intelligent Transportation System (ITS). There are a few simulation models which are developed focusing on ITS such as MITSIMLab. The TRAF-family and HUTSIM models attempt a system-level simulation approach and develop open environments where several analysis models can be used interactively to solve traffic simulation problems. In Saudi Arabia, use of simulation software with the capability of analyzing an integrated system of freeways and surface streets has not been reported. Calibration and validation of simulation software either for freeways or surface streets has been reported. This paper suggests that researchers evaluate the state-of-the-art simulation tools and find out the suitable tools or approaches for the local conditions of Saudi Arabia. (author)

  20. Sequence System Building Blocks: Using a Component Architecture for Sequencing Software

    Science.gov (United States)

    Streiffert, Barbara A.; O'Reilly, Taifun

    2005-01-01

    Over the last few years software engineering has made significant strides in making more flexible architectures and designs possible. However, at the same time, spacecraft have become more complex and flight software has become more sophisticated. Typically spacecraft are often one-of-a-kind entities that have different hardware designs, different capabilities, different instruments, etc. Ground software has become more complex and operations teams have had to learn a myriad of tools that all have different user interfaces and represent data in different ways. At Jet Propulsion Laboratory (JPL) these themes have collided to require an new approach to producing ground system software. Two different groups have been looking at tackling this particular problem. One group is working for the JPL Mars Technology Program in the Mars Science Laboratory (MSL) Focused Technology area. The other group is the JPL Multi-Mission Planning and Sequencing Group . The major concept driving these two approaches on a similar path is to provide software that can be a more cohesive flexible system that provides a act of planning and sequencing system of services. This paper describes the efforts that have been made to date to create a unified approach from these disparate groups.

  1. Sequencing System Building Blocks: Using a Component Architecture for Sequencing Software

    Science.gov (United States)

    Streiffert, Barbara A.; O'Reilly, Taifun

    2006-01-01

    Over the last few years software engineering has made significant strides in making more flexible architectures and designs possible. However, at the same time, spacecraft have become more complex and flight software has become more sophisticated. Typically spacecraft are often one-of-a-kind entities that have different hardware designs, different capabilities, different instruments, etc. Ground software has become more complex and operations teams have had to learn a myriad of tools that all have different user interfaces and represent data in different ways. At Jet Propulsion Laboratory (JPL) these themes have collided to require a new approach to producing ground system software. Two different groups have been looking at tackling this particular problem. One group is working for the JPL Mars Technology Program in the Mars Science Laboratory (MSL) Focused Technology area. The other group is the JPL Multi-Mission Planning and Sequencing Group. The major concept driving these two approaches on a similar path is to provide software that can be a more cohesive flexible system that provides a set of planning and sequencing system of services. This paper describes the efforts that have been made to date to create a unified approach from these disparate groups.

  2. Computer simulation for better design and operation of large office building air-conditioning

    NARCIS (Netherlands)

    Lain, M.; Hensen, J.; Zmrhal, V.

    2009-01-01

    The paper deals with the use of computer simulations both for the design support of a new buildings and HVAC system development and for the optimisation of the system control strategy in the building. This is presented on a real office building in Prague. For a new large bank head office in Prague,

  3. TGF electron avalanches and gamma-ray emission with LEPTRACK - a new detailed simulation software package

    Science.gov (United States)

    Connell, Paul

    2014-05-01

    In designing the MXGS coded mask imager of the ASIM mission on the ISS, to detect and locate gamma-rays from Terrestrial Gamma-ray Flashes, it was necessary to write software to simulate the expansion of gamma-ray photons from 15-20 km altitudes for an initial estimate of TGF spectra and diffuse beam structure likely to be observed at orbital altitudes. From this a new detailed LEPTRACK simulation software package has been developed to track all electron-photon scattering via Bremsstrahlung and ionization, and via any spatial electric-magnetic field geometies which will drive the Relativistic Runaway Electron Avalanche (RREA) process at the heart of TGF origin. LEPTRACK uses the standard physics of keV-MeV photon interactions, Bremsstrahlung scattering, Binary-Electron-Bethe models of electron ionization-scattering, positron Bhabha scattering and annihilation. Unlike simulation packages GEANT4, EGS, etc, the physics of these processes is transferred outside the software and controlled by a standard database of text files of total scattering cross sections, differential energy transfer and deflection angle PDFs - easy to read and plot - but which can also be changed, if the user understands the physics involved and wishes to create their own modified database. It also uses a superparticle spatial mesh system to control particle density and flux fields, electric field evolution, and exponential avalanche growth. Results will be presented of TGF simulations using macro electric field geometries expected in storm clouds and micro field geometries expected around streamer tips - and combinations of both - and will include video displays showing the evolving ionization structure of electron trajectories, the time evolution of photon-electron-positron density and flux fields, local molecular ion densities, the dielectric effect of induced local electric fields - and the important effect of the local earth magnetic field on circular lepton feedback and TGF beam direction

  4. Building a virtual ligand screening pipeline using free software: a survey.

    Science.gov (United States)

    Glaab, Enrico

    2016-03-01

    Virtual screening, the search for bioactive compounds via computational methods, provides a wide range of opportunities to speed up drug development and reduce the associated risks and costs. While virtual screening is already a standard practice in pharmaceutical companies, its applications in preclinical academic research still remain under-exploited, in spite of an increasing availability of dedicated free databases and software tools. In this survey, an overview of recent developments in this field is presented, focusing on free software and data repositories for screening as alternatives to their commercial counterparts, and outlining how available resources can be interlinked into a comprehensive virtual screening pipeline using typical academic computing facilities. Finally, to facilitate the set-up of corresponding pipelines, a downloadable software system is provided, using platform virtualization to integrate pre-installed screening tools and scripts for reproducible application across different operating systems.

  5. Modeling and Simulation of Multi-Room Buildings

    Directory of Open Access Journals (Sweden)

    D.W.U. Perera

    2016-04-01

    Full Text Available Buildings are one of the largest energy consumers in the world which accounts for nearly 40% of the total global energy consumption. In the countries where cold climate conditions predominate, space heating is the key contributor to the increased energy consumption. Today there is a growing trend to use Building Energy Management Systems (BEMS to control the energy consumption of buildings in an efficient manner. BEMS require a good heating model of the building to be integrated for better control purposes. This article refers to the development of different types of physics based buillding heating models, regarding single-zone, multi-floor and multi-room buildings. They address the propriety of each model in building heating control concerning the prediction accuracy and the prediction time. These models are verified for a residential building having three floors. According to the results, the multi-floor model is recognized to have the best qualifications obliged as a model for control.

  6. A Computational Systems Biology Software Platform for Multiscale Modeling and Simulation: Integrating Whole-Body Physiology, Disease Biology, and Molecular Reaction Networks

    Science.gov (United States)

    Eissing, Thomas; Kuepfer, Lars; Becker, Corina; Block, Michael; Coboeken, Katrin; Gaub, Thomas; Goerlitz, Linus; Jaeger, Juergen; Loosen, Roland; Ludewig, Bernd; Meyer, Michaela; Niederalt, Christoph; Sevestre, Michael; Siegmund, Hans-Ulrich; Solodenko, Juri; Thelen, Kirstin; Telle, Ulrich; Weiss, Wolfgang; Wendl, Thomas; Willmann, Stefan; Lippert, Joerg

    2011-01-01

    Today, in silico studies and trial simulations already complement experimental approaches in pharmaceutical R&D and have become indispensable tools for decision making and communication with regulatory agencies. While biology is multiscale by nature, project work, and software tools usually focus on isolated aspects of drug action, such as pharmacokinetics at the organism scale or pharmacodynamic interaction on the molecular level. We present a modeling and simulation software platform consisting of PK-Sim® and MoBi® capable of building and simulating models that integrate across biological scales. A prototypical multiscale model for the progression of a pancreatic tumor and its response to pharmacotherapy is constructed and virtual patients are treated with a prodrug activated by hepatic metabolization. Tumor growth is driven by signal transduction leading to cell cycle transition and proliferation. Free tumor concentrations of the active metabolite inhibit Raf kinase in the signaling cascade and thereby cell cycle progression. In a virtual clinical study, the individual therapeutic outcome of the chemotherapeutic intervention is simulated for a large population with heterogeneous genomic background. Thereby, the platform allows efficient model building and integration of biological knowledge and prior data from all biological scales. Experimental in vitro model systems can be linked with observations in animal experiments and clinical trials. The interplay between patients, diseases, and drugs and topics with high clinical relevance such as the role of pharmacogenomics, drug–drug, or drug–metabolite interactions can be addressed using this mechanistic, insight driven multiscale modeling approach. PMID:21483730

  7. A computational systems biology software platform for multiscale modeling and simulation: Integrating whole-body physiology, disease biology, and molecular reaction networks

    Directory of Open Access Journals (Sweden)

    Thomas eEissing

    2011-02-01

    Full Text Available Today, in silico studies and trial simulations already complement experimental approaches in pharmaceutical R&D and have become indispensable tools for decision making and communication with regulatory agencies. While biology is multi-scale by nature, project work and software tools usually focus on isolated aspects of drug action, such as pharmacokinetics at the organism scale or pharmacodynamic interaction on the molecular level. We present a modeling and simulation software platform consisting of PK-Sim® and MoBi® capable of building and simulating models that integrate across biological scales. A prototypical multiscale model for the progression of a pancreatic tumor and its response to pharmacotherapy is constructed and virtual patients are treated with a prodrug activated by hepatic metabolization. Tumor growth is driven by signal transduction leading to cell cycle transition and proliferation. Free tumor concentrations of the active metabolite inhibit Raf kinase in the signaling cascade and thereby cell cycle progression. In a virtual clinical study, the individual therapeutic outcome of the chemotherapeutic intervention is simulated for a large population with heterogeneous genomic background. Thereby, the platform allows efficient model building and integration of biological knowledge and prior data from all biological scales. Experimental in vitro model systems can be linked with observations in animal experiments and clinical trials. The interplay between patients, diseases, and drugs and topics with high clinical relevance such as the role of pharmacogenomics, drug-drug or drug-metabolite interactions can be addressed using this mechanistic, insight driven multiscale modeling approach.

  8. Pipeline design software and the simulation of liquid propane/butane-light oils pipeline operations

    Energy Technology Data Exchange (ETDEWEB)

    Peters, J. [Monenco AGRA Inc., Calgary, Alberta (Canada)

    1996-12-31

    A comprehensive and integrated suite of computer software routines has been developed to simulate the flow of liquids in pipelines. The fluid properties module accommodates Newtonian and non-Newtonian liquids or mixtures including corrections for changes in properties with temperature and pressure. The hydraulic model calculates pressure drop in single or looped pipelines based on the diameter, route (length) and profile data provided. For multi-product pipelines the hydraulics module estimates energy loss for any sequence of batches given the size and fluid properties of each batch, and the velocity in the pipeline. When the characteristics of existing or proposed pipeline pumps are included, location and size of pumps can be optimized. The effect of heat loss on pressure drop is predicted by invoking the module which calculates the fluid temperature profile based on operating conditions, fluid properties, pipe and insulation conductivity and soil heat transfer data. Modules, created to simulate heater or cooler operations, can be incorporated to compensate for changes in temperature. Input data and calculated results can be presented in a format customized by the user. The simulation software has been successfully applied to multi-product, fuel oil, and non-Newtonian emulsion pipelines. The simulation and operation of a refinery products pipeline for the transportation of propane, butane, gasline, jet and diesel batches will be discussed. The impact of high vapor pressure batches (i.e., propane and butane) on the operation of the pipeline and on the upstream and downstream facilities will be examined in detail.

  9. Selection of Steady-State Process Simulation Software to Optimize Treatment of Radioactive and Hazardous Waste

    Energy Technology Data Exchange (ETDEWEB)

    Nichols, T. T.; Barnes, C. M.; Lauerhass, L.; Taylor, D. D.

    2001-06-01

    The process used for selecting a steady-state process simulator under conditions of high uncertainty and limited time is described. Multiple waste forms, treatment ambiguity, and the uniqueness of both the waste chemistries and alternative treatment technologies result in a large set of potential technical requirements that no commercial simulator can totally satisfy. The aim of the selection process was two-fold. First, determine the steady-state simulation software that best, albeit not completely, satisfies the requirements envelope. And second, determine if the best is good enough to justify the cost. Twelve simulators were investigated with varying degrees of scrutiny. The candidate list was narrowed to three final contenders: ASPEN Plus 10.2, PRO/II 5.11, and CHEMCAD 5.1.0. It was concluded from ''road tests'' that ASPEN Plus appears to satisfy the project's technical requirements the best and is worth acquiring. The final software decisions provide flexibility: they involve annual rather than multi-year licensing, and they include periodic re-assessment.

  10. Selection of Steady-State Process Simulation Software to Optimize Treatment of Radioactive and Hazardous Waste

    International Nuclear Information System (INIS)

    The process used for selecting a steady-state process simulator under conditions of high uncertainty and limited time is described. Multiple waste forms, treatment ambiguity, and the uniqueness of both the waste chemistries and alternative treatment technologies result in a large set of potential technical requirements that no commercial simulator can totally satisfy. The aim of the selection process was two-fold. First, determine the steady-state simulation software that best, albeit not completely, satisfies the requirements envelope. And second, determine if the best is good enough to justify the cost. Twelve simulators were investigated with varying degrees of scrutiny. The candidate list was narrowed to three final contenders: ASPEN Plus 10.2, PRO/II 5.11, and CHEMCAD 5.1.0. It was concluded from ''road tests'' that ASPEN Plus appears to satisfy the project's technical requirements the best and is worth acquiring. The final software decisions provide flexibility: they involve annual rather than multi-year licensing, and they include periodic re-assessment

  11. Simulation-based support for integrated design of new low-energy office buildings

    DEFF Research Database (Denmark)

    Petersen, Steffen

    and building modelling because of the design situation. The method is implemented in an existing building simulation tool. A test case featuring an office located in Copenhagen, Denmark, shows that the suggested method reduces the energy required for heating and ventilation compared to more conventional......This thesis reports on four years of research with the aim to contribute to the implementation of low-energy office buildings with high quality of indoor environment and good total economy. Focus has been on the design decisions made in the early stages of the building design process. The objective...... is to contribute to a development where simulations of building energy performance and indoor environment is used for generating an input to the overall building design process prior to any actual form giving of the building. This input should be considered as one of several similar inputs from other building...

  12. Improving the development of instructional software : Three building-block solutions to interrelate design and production

    NARCIS (Netherlands)

    Boot, E.W.; Merrienboer, J.J.G. van; Theunissen, N.C.M.

    2008-01-01

    Currently, there is a focus on authentic tasks as the driving force for learning in integrated e-learning systems. This sets new criteria for instructional software, which should become much more flexible and allow for domain modeling and pedagogical modeling. A theoretical analysis and a survey (n

  13. Building the Next Generation of Aerospace Data Processing Systems by Reusing Existing Software Components

    OpenAIRE

    Marshall, James J.; Downs, Robert R.; Samadi, Shahin

    2010-01-01

    The authors appreciate the contributions of the current and previous members of the National Aeronautics and Space Administration (NASA) Earth Science Data Systems Software Reuse Working Group to some of the work presented here, and very much appreciate the support received from the NASA for the work reported in this paper, including the support for Robert Downs under Contract NAS5-03117.

  14. Principle of reflecting measurement system for roller wear and software simulation

    Science.gov (United States)

    Zheng, Longjiang; Wang, Kai; Guo, Yuan; Wang, Yutian

    2006-11-01

    Roller plays an important role in rolling mill. However, the effective surface of roller is limited. After long time working, the surface of roller will wear. The roller wear will result in difficult controlling of shape and thickness of steel board. Further more, it can lead to the decline of product quality. So the measurement of roller wear is very urgent for rolling mill to ensure their product quality. In this paper, a measurement method for roller wear is introduced in detail. This method offers advantages of sensitivity, immediate response, electromagnetic interference, simplicity and non-contact. It can detect in the atrocious condition on-line and examine roller wear precisely and real time. It is an effective method at low cost instance. The basic principle of this system is optical reflection principle. In the paper, after explaining the principle of this measurement system, an error compensation algorithm is exactly calculated to improve accuracy of this measurement system. This algorithm is brought out to offset the shift of measurement track. And a simulation-software program is compiled with Microsoft Visual Basic 6.0 based on this principle. By using this simulation-software, the date of I/O signal for this system is gained. And the signal verse is automatically drawn in this software.

  15. Application of optical system simulation software in a fiber optic telecommunications program

    Science.gov (United States)

    Koontz, Warren L. G.; Mandloi, Divya

    2004-10-01

    One of our objectives in the College of Applied Science and Technology at RIT is to offer our students some kind of "hands-on" experience along with theory. Providing a hands-on experience can be costly, however, especially in the field of optical communication. Although reasonably priced laboratory kits are available, the optical-electronic components in these kits are well below communication grade. Thus if we rely only on hardware, our students can only experiment with low power, low bit rate communication over a few kilometers of fiber. Computer simulation software offers an affordable alternative "hands-on" experience. With this software, a student can create a model of an optical system, execute the model and view measures of the system's performance. The system components can include DFB laser diodes, high-speed modulators, hundreds of kilometers of fiber, APD receivers and other optical and electrical components. The student can view the optical signals in the time or frequency domain, measure optical power and signal-to-noise ratio and much more. He or she can also view the effects of parameter variations or find the optimal value of a parameter. The software is easy to learn, especially if the student has previous experience with an electronic system simulator. This paper describes our application of an optical-electronic system simulator in the Telecommunications Engineering Technology program at RIT. We are developing a series of exercises to complement courses in fiber optic. These exercises will allow students to model and test systems that they have designed. We expect computer simulation to enhance our fiber optic courses significantly by adding a reasonably realistic and accessible test bed for student designs.

  16. New software library of geometrical primitives for modelling of solids used in Monte Carlo detector simulations

    CERN Document Server

    CERN. Geneva

    2012-01-01

    We present our effort for the creation of a new software library of geometrical primitives, which are used for solid modelling in Monte Carlo detector simulations. We plan to replace and unify current geometrical primitive classes in the CERN software projects Geant4 and ROOT with this library. Each solid is represented by a C++ class with methods suited for measuring distances of particles from the surface of a solid and for determination as to whether the particles are located inside, outside or on the surface of the solid. We use numerical tolerance for determining whether the particles are located on the surface. The class methods also contain basic support for visualization. We use dedicated test suites for validation of the shape codes. These include also special performance and numerical value comparison tests for help with analysis of possible candidates of class methods as well as to verify that our new implementation proposals were designed and implemented properly. Currently, bridge classes are u...

  17. Object oriented software for simulation and reconstruction of big alignment systems

    CERN Document Server

    Arce, P

    2003-01-01

    Modern high-energy physics experiments require tracking detectors to provide high precision under difficult working conditions (high magnetic field, gravity loads and temperature gradients). This is the reason why several of them are deciding to implement optical alignment systems to monitor the displacement of tracking elements in operation. To simulate and reconstruct optical alignment systems a general purpose software, named COCOA, has been developed, using the object oriented paradigm and software engineering techniques. Thanks to the big flexibility in its design, COCOA is able to reconstruct any optical system made of a combination of the following objects: laser, x-hair laser, incoherent source - pinhole, lens, mirror, plate splitter, cube splitter, optical square, rhomboid prism, 2D sensor, 1D sensor, distance-meter, tilt-meter, user-defined. COCOA was designed to satisfy the requirements of the CMS alignment system, which has several thousands of components. Sparse matrix techniques had been investi...

  18. Development of software tools for 4-D visualization and quantitative analysis of PHITS simulation results

    International Nuclear Information System (INIS)

    A suite of software tools has been developed to facilitate the development of apparatus using a radiation transport simulation code PHITS by enabling 4D visualization (3D space and time) and quantitative analysis of so-called dieaway plots. To deliver useable tools as soon as possible, the existing software was utilized as much as possible; ParaView will be used for the 4D visualization of the results, whereas the analyses of dieaway plots will be done with ROOT toolkit with a tool named “diana”. To enable 4D visualization using ParaView, a group of tools (angel2vtk, DispDCAS1, CamPos) has been developed for the conversion of the data format to the one which can be read from ParaView and to ease the visualization. (author)

  19. Sensitivity analysis and application guides for integrated building energy and CFD simulation

    Energy Technology Data Exchange (ETDEWEB)

    Zhiqiang John Zhai [Colorado Univ., Boulder, CO (United States). Dept. of Civil, Environmental, and Architectural Engineering; Qingyan Yan Chen [Purdue Univ., West Lafayette, IN (United States). School of Mechanical Engineering

    2006-09-15

    Building energy simulation (ES) and computational fluid dynamics (CFD) programs provide complementary information essential to evaluating building thermal performance. Integration of the two programs eliminates many model assumptions in separate applications and thus improves the quality of simulation results. This paper discusses the potential building and environmental characteristics that may affect the necessity and effectiveness of applying an ES-CFD coupling simulation. These characteristics and the solution accuracy requirement determine whether a coupled simulation is needed for a specific building and which coupling method can provide the best solution with the compromise of both accuracy and efficiency. The study conducts a sensitivity analysis of the coupling simulation to the potential influential factors, based on which general suggestions on appropriate usage of the coupling simulation are provided. (author)

  20. Sensitivity analysis and application guides for integrated building energy and CFD simulation

    Energy Technology Data Exchange (ETDEWEB)

    Zhai, Z.J. [Department of Civil, Environmental and Architectural Engineering, University of Colorado at Boulder, Boulder, CO (United States); Chen, Q.Y. [School of Mechanical Engineering, Purdue University, West Lafayette, IN (United States)

    2006-07-01

    Building energy simulation (ES) and computational fluid dynamics (CFD) programs provide complementary information essential to evaluating building thermal performance. Integration of the two programs eliminates many model assumptions in separate applications and thus improves the quality of simulation results. This paper discusses the potential building and environmental characteristics that may affect the necessity and effectiveness of applying an ES-CFD coupling simulation. These characteristics and the solution accuracy requirement determine whether a coupled simulation is needed for a specific building and which coupling method can provide the best solution with the compromise of both accuracy and efficiency. The study conducts a sensitivity analysis of the coupling simulation to the potential influential factors, based on which general suggestions on appropriate usage of the coupling simulation are provided. (author)

  1. Profile of NASA software engineering: Lessons learned from building the baseline

    Science.gov (United States)

    Hall, Dana; Mcgarry, Frank

    1993-01-01

    It is critically important in any improvement activity to first understand the organization's current status, strengths, and weaknesses and, only after that understanding is achieved, examine and implement promising improvements. This fundamental rule is certainly true for an organization seeking to further its software viability and effectiveness. This paper addresses the role of the organizational process baseline in a software improvement effort and the lessons we learned assembling such an understanding for NASA overall and for the NASA Goddard Space Flight Center in particular. We discuss important, core data that must be captured and contrast that with our experience in actually finding such information. Our baselining efforts have evolved into a set of data gathering, analysis, and crosschecking techniques and information presentation formats that may prove useful to others seeking to establish similar baselines for their organization.

  2. The use of process simulation models in virtual commissioning of process automation software in drinking water treatment plants

    NARCIS (Netherlands)

    Worm, G.I.M.; Kelderman, J.P.; Lapikas, T.; Van der Helm, A.W.C.; Van Schagen, K.M.; Rietveld, L.C.

    2012-01-01

    This research deals with the contribution of process simulation models to the factory acceptance test (FAT) of process automation (PA) software of drinking water treatment plants. Two test teams tested the same piece of modified PA-software. One team used an advanced virtual commissioning (AVC) syst

  3. Building a Software-Defined Networking System with OpenDaylight Controller

    OpenAIRE

    Sisov, Maksim

    2016-01-01

    The goal of this project was to create a working and redundant software defined networking system in an isolated networking laboratory. In addition, another goal was to gain experience with the technology and produce well-defined and clear instructions describing how to create the same system. The project was carried out in a networking laboratory on an ESXi server with virtual machines installed on it. The OpenDaylight controller was chosen as a main controller and Mininet was used as a ...

  4. VIBA-LAB2: a virtual ion beam analysis laboratory software package incorporating elemental map simulations

    International Nuclear Information System (INIS)

    The software package VIBA-lab1, which incorporates PIXE and RBS energy spectra simulation has now been extended to include the simulation of elemental maps from 3D structures. VIBA-lab1 allows the user to define a wide variety of experimental parameters, e.g. energy and species of incident ions, excitation and detection geometry, etc. When the relevant experimental parameters as well as target composition are defined, the program can then simulate the corresponding PIXE and RBS spectra. VIBA-LAB2 has been written with applications in nuclear microscopy in mind. A set of drag-and-drop tools has been incorporated to allow the user to define a three-dimensional sample object of mixed elemental composition. PIXE energy spectra simulations are then carried out on pixel-by-pixel basis and the corresponding intensity distributions or elemental maps can be computed. Several simulated intensity distributions for some 3D objects are demonstrated, and simulations obtained from a simple IC are compared with experimental results

  5. DSC: software tool for simulation-based design of control strategies applied to wastewater treatment plants.

    Science.gov (United States)

    Ruano, M V; Ribes, J; Seco, A; Ferrer, J

    2011-01-01

    This paper presents a computer tool called DSC (Simulation based Controllers Design) that enables an easy design of control systems and strategies applied to wastewater treatment plants. Although the control systems are developed and evaluated by simulation, this tool aims to facilitate the direct implementation of the designed control system to the PC of the full-scale WWTP (wastewater treatment plants). The designed control system can be programmed in a dedicated control application and can be connected to either the simulation software or the SCADA of the plant. To this end, the developed DSC incorporates an OPC server (OLE for process control) which facilitates an open-standard communication protocol for different industrial process applications. The potential capabilities of the DSC tool are illustrated through the example of a full-scale application. An aeration control system applied to a nutrient removing WWTP was designed, tuned and evaluated with the DSC tool before its implementation in the full scale plant. The control parameters obtained by simulation were suitable for the full scale plant with only few modifications to improve the control performance. With the DSC tool, the control systems performance can be easily evaluated by simulation. Once developed and tuned by simulation, the control systems can be directly applied to the full-scale WWTP.

  6. Developments in simulations and software for a near-infrared precision radial velocity spectrograph

    Science.gov (United States)

    Terrien, Ryan C.; Bender, Chad F.; Mahadevan, Suvrath; Halverson, Samuel P.; Ramsey, Lawrence W.; Hearty, Frederick R.

    2014-07-01

    We present developments in simulations and software for the Habitable Zone Planet Finder (HPF), an R~50,000 near-infrared cross-dispersed radial velocity spectrograph that will be used to search for planets around M dwarfs. HPF is fiber-fed, operates in the zYJ bands, and uses a 1.7μm cutoff HAWAII-2RG (H2RG) NIR detector. We have constructed an end-to-end simulator that accepts as input a range of stellar models contaminated with telluric features and processes these through a simulated detector. This simulator accounts for the characteristics of the H2RG, including interpixel capacitance, persistence, nonlinearities, read noise, and other detector characteristics, as measured from our engineering-grade H2RG. It also implements realistic order curvature. We describe applications of this simulator including optimization of the fiber configuration at the spectrograph slit and selection of properties for a laser frequency comb calibration source. The simulator has also provided test images for development of the HPF survey extraction and RV analysis pipeline and we describe progress on this pipeline itself, which will implement optimal extraction, laser frequency comb and emission lamp wavelength calibration, and cross-correlation based RV measurement.

  7. Simulation Tests in Whole Building Heat and Moisture Transfer

    DEFF Research Database (Denmark)

    Rode, Carsten; Peuhkuri, Ruut Hannele; Woloszyn, Monika

    2006-01-01

    An important part of the International Energy Agency project, ECBCS, Annex 41 is about modelling the integral heat, air and moisture transfer processes that take place in “whole buildings”. Such modelling deals with all most relevant elements of buildings: The indoor air, the building envelope...

  8. Sci—Fri PM: Topics — 05: Experience with linac simulation software in a teaching environment

    International Nuclear Information System (INIS)

    Medical linear accelerator education is usually restricted to use of academic textbooks and supervised access to accelerators. To facilitate the learning process, simulation software was developed to reproduce the effect of medical linear accelerator beam adjustments on resulting clinical photon beams. The purpose of this report is to briefly describe the method of operation of the software as well as the initial experience with it in a teaching environment. To first and higher orders, all components of medical linear accelerators can be described by analytical solutions. When appropriate calibrations are applied, these analytical solutions can accurately simulate the performance of all linear accelerator sub-components. Grouped together, an overall medical linear accelerator model can be constructed. Fifteen expressions in total were coded using MATLAB v 7.14. The program was called SIMAC. The SIMAC program was used in an accelerator technology course offered at our institution; 14 delegates attended the course. The professional breakdown of the participants was: 5 physics residents, 3 accelerator technologists, 4 regulators and 1 physics associate. The course consisted of didactic lectures supported by labs using SIMAC. At the conclusion of the course, eight of thirteen delegates were able to successfully perform advanced beam adjustments after two days of theory and use of the linac simulator program. We suggest that this demonstrates good proficiency in understanding of the accelerator physics, which we hope will translate to a better ability to understand real world beam adjustments on a functioning medical linear accelerator

  9. Sci—Fri PM: Topics — 05: Experience with linac simulation software in a teaching environment

    Energy Technology Data Exchange (ETDEWEB)

    Carlone, Marco; Harnett, Nicole; Jaffray, David [Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON (Canada); Department of Radiation Oncology, University of Toronto, Toronto, ON (Canada); Norrlinger, Bern; Prooijen, Monique van; Milne, Emily [Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON (Canada)

    2014-08-15

    Medical linear accelerator education is usually restricted to use of academic textbooks and supervised access to accelerators. To facilitate the learning process, simulation software was developed to reproduce the effect of medical linear accelerator beam adjustments on resulting clinical photon beams. The purpose of this report is to briefly describe the method of operation of the software as well as the initial experience with it in a teaching environment. To first and higher orders, all components of medical linear accelerators can be described by analytical solutions. When appropriate calibrations are applied, these analytical solutions can accurately simulate the performance of all linear accelerator sub-components. Grouped together, an overall medical linear accelerator model can be constructed. Fifteen expressions in total were coded using MATLAB v 7.14. The program was called SIMAC. The SIMAC program was used in an accelerator technology course offered at our institution; 14 delegates attended the course. The professional breakdown of the participants was: 5 physics residents, 3 accelerator technologists, 4 regulators and 1 physics associate. The course consisted of didactic lectures supported by labs using SIMAC. At the conclusion of the course, eight of thirteen delegates were able to successfully perform advanced beam adjustments after two days of theory and use of the linac simulator program. We suggest that this demonstrates good proficiency in understanding of the accelerator physics, which we hope will translate to a better ability to understand real world beam adjustments on a functioning medical linear accelerator.

  10. Supporting-software for the engineering of automation stations in the building automation; Unterstuetzungssoftware fuer das Automationsstations-Engineering in der Gebaeudeautomation

    Energy Technology Data Exchange (ETDEWEB)

    Runde, Stefan; Scholz, Andre; Fay, Alexander [Helmut-Schmidt-Univ. / Univ. der Bundeswehr Hamburg (Germany); Pollmeier, Juergen; Wolff, Christian [GFR - Gesellschaft fuer Regelungstechnik und Energieeinsparung mbH, Verl (Germany)

    2009-07-01

    A lot of studies and also practice show that modern building automation systems reduce long-term cost and amortise in the shortest time, too. But despite these positive aspects by means of building automation, especially the higher initial investment costs scares many potential customers off the application of these systems. Engineering costs account for a considerable part of these initial costs, which are charaterised by a lot of routine job. Within this article a supporting-software for an improved engineering of automation systems in building automation is shown. Basis of this supporting-software is a knowledge based system. (orig.)

  11. On the impact of building attenuation models in urban VANET simulations

    OpenAIRE

    Luis Urquiza-Aguiar; Carolina Tripp-Barba; José Estrada-Jiménez; Mónica Aguilar Igartua

    2015-01-01

    Buildings are important elements of cities for VANETs, since these obstacles may attenuate communications between vehicles. Consequently, the impact of buildings has to be considered as part of the attenuation model in VANET simulations of urban scenarios. However, the more elaborated the model, the more information needs to be processed during the simulation, which implies longer processing times. This complexity in simulations is not always worth it, because simplified channel models occasi...

  12. Simulation Technology of Environmental Impacts by Zero-energy Residential Buildings Based on Emergy Analysis Method

    Institute of Scientific and Technical Information of China (English)

    Hong Zhou; XiaoLong Xue; WangShu Yang

    2014-01-01

    This paper presents a simulation technology of environmental impact for the building. By emergy analysis method, emergy costs of building( or construction engineering) can be calculated in the life cycle. It includes the engineering cost, environmental cost and social cost of building. Through integrating GIS technology with multi-agent technology, life cycle substance and energy metabolism of building ( construction engineering) can be simulated and their environmental influence can be dynamically displayed. Based on the case study of entries works ‘Sunny Inside’ by Xiamen University in 2013 China International Solar Decathlon Competition, we discovered the changing pattern of surrounding environmental impact from waste streams of the zero-energy building and ordinary construction. The simulation results verified and showed the Odum principles of maximum power. This paper provides a new research perspective and integration approach for the environmental impact assessment in building and construction engineering. The result will help decision-making in design and construction engineering scheme.

  13. Training tolls for nuclear education at INSTN: software applications, research reactor and simulators

    Energy Technology Data Exchange (ETDEWEB)

    Foulon, F.; Jedrzejewski, F. [Atomic Energy Commission, Saclay Research Centre, 91191 - Gif Sur Yvette (France)

    2010-07-01

    As a part of the French Atomic Energy Commission (CEA), the National Institute for Nuclear Science and Technology (INSTN) is a higher education institution. Its objective is to provide to engineers and researchers a high level of scientific and technological qualification in all disciplines related to nuclear science. This includes the organisation of international courses in nuclear engineering. In order to complete and to illustrate the theoretical courses on reactor physics, an extensive range of training tolls are used. These tolls that include software applications, the use of research reactors and simulators are presented. (authors)

  14. Software Architecture of the NASA Shuttle Ground Operations Simulator--SGOS

    Science.gov (United States)

    Cook Robert P.; Lostroscio, Charles T.

    2005-01-01

    The SGOS executive and its subsystems have been an integral component of the Shuttle Launch Safety Program for almost thirty years. it is usable (via the LAN) by over 2000 NASA employees at the Kennedy Space Center and 11,000 contractors. SGOS supports over 800 models comprised of several hundred thousand lines of code and over 1,00 MCP procedures. Yet neither language has a for loop!! The simulation software described in this paper is used to train ground controllers and to certify launch countdown readiness.

  15. AVR microcontroller simulator for software implemented hardware fault tolerance algorithms research

    Science.gov (United States)

    Piotrowski, Adam; Tarnowski, Szymon; Napieralski, Andrzej

    2008-01-01

    Reliability of new, advanced electronic systems becomes a serious problem especially in places like accelerators and synchrotrons, where sophisticated digital devices operate closely to radiation sources. One of the possible solutions to harden the microprocessor-based system is a strict programming approach known as the Software Implemented Hardware Fault Tolerance. Unfortunately, in real environments it is not possible to perform precise and accurate tests of the new algorithms due to hardware limitation. This paper highlights the AVR-family microcontroller simulator project equipped with an appropriate monitoring and the SEU injection systems.

  16. Possibilities for simulating the smoke rollback effect in underground mines using CFD software

    OpenAIRE

    Adjiski, Vancho

    2014-01-01

    The effect of fire generated smoke rollback in underground mines can be dangerous and a potentially fatal threat to all who are endangered by the fire. Three critical stages in the process of smoke rollback are 3D local phenomena that can be analysed by CFD software simulations. With the help of a 3D-CFD analysis we can observe the critical stages of smoke rollback and their reaction to a ventilation network. The CFD provides the opportunity to expand the range of prediction of smoke spread f...

  17. The Python Sky Model: software for simulating the Galactic microwave sky

    CERN Document Server

    Thorne, Ben; Alonso, David; Naess, Sigurd

    2016-01-01

    We present a numerical code to simulate maps of Galactic emission in intensity and polarization at microwave frequencies, aiding in the design of Cosmic Microwave Background experiments. This Python code builds on existing efforts to simulate the sky by providing an easy-to-use interface and is based on publicly available data from the WMAP and Planck satellite missions. We simulate synchrotron, thermal dust, free-free, and anomalous microwave emission over the whole sky, in addition to the Cosmic Microwave Background, and include a set of alternative prescriptions for the frequency dependence of each component that are consistent with current data. We also present a prescription for adding small-scale realizations of these components at resolutions greater than current all-sky measurements. The code is available at https://github.com/bthorne93/PySM_public.

  18. Building a bridge: social networks and technological regimes in biotechnology and software

    OpenAIRE

    Salavisa, I.; Fontes, M; C. Sousa; Videira, P

    2011-01-01

    The paper investigates the influence of technological regimes on the composition and structure of firms’ knowledge networks. We combine insights from two hitherto unconnected bodies of research: one relating technological regimes with the nature of knowledge; and the other relating knowledge and types of innovation with network configuration. Drawing on this framework, we build a number of propositions on the relationship between firms’ networking behaviour and the regime under which they op...

  19. An expandable software model for collaborative decision mrking during the whole building life cycle

    OpenAIRE

    Papamichael, K.; Pal, V.; Bourassa, N.; Loffeld, J.; Capeluto, G.

    2000-01-01

    Decisions throughout the life cycle of a building, from design through construction and commissioning to operation and demolition, require the involvement of multiple interested parties (e.g., architects, engineers, owners, occupants and facility managers). The performance of alternative designs and courses of action must be assessed with respect to multiple performance criteria, such as comfort, aesthetics, energy, cost and environmental impact. Several stand-alone computer tools are c...

  20. Building Blocks: Utilizing Component-Based Software Engineering in Developing Cross-Platform Mobile Applications

    OpenAIRE

    Oskar, Andersson

    2014-01-01

    Contemporary approaches to cross-platform mobile application development, such as hybrid apps from PhoneGap and generated native apps from Xamarin, show promise in reducing development time towards Android, iOS and other platforms. At the same time, studies show that there are various problems associated with these approaches, including suffering user experiences and codebases that are difficult to maintain and test properly. In this thesis, a novel prototype framework called Building Blocks ...

  1. Thermodynamical simulations of diffusion and carbide growth in dissimilar weld joints using DICTRA registered software

    International Nuclear Information System (INIS)

    The diffusion of carbon near dissimilar weld joints during post weld heat treatment (stress relief annealing) can lead to decarburization and to carbide growth in different phases of the weld, which may be initiation sites for mechanical failure. The present study shows the results of thermodynamical simulations of diffusion controlled phenomena in dissimilar weld joint during the stress relief annealing using the DICTRA software. The simulation of the solid state reactions during annealing is able to model the decarburization in the ferritic part and the carbide growth near the phase boundary, in the ferritic and austenitic sections, respectively, as well as their dependence on time and temperature. In addition to M23C6 carbides, the simulations confirmed the formation of M7C3 carbides, which are harder than M23C6 type. The comparison of the simulation results with the metallographic analysis showed a good agreement. All experimentally detected phases have been met in the simulation with realistic length scales along with the concentration profiles of the most important alloying elements like carbon and chromium

  2. Hardware-software system for simulating and analyzing earthquakes applied to civil structures

    Directory of Open Access Journals (Sweden)

    J. P. Amezquita-Sanchez

    2012-01-01

    Full Text Available The occurrence of recent strong earthquakes, the incessant worldwide movements of tectonic plates and the continuous ambient vibrations caused by traffic and wind have increased the interest of researchers in improving the capacity of energy dissipation to avoid damages to civil structures. Experimental testing of structural systems is essential for the understanding of physical behaviors and the building of appropriate analytic models in order to expose difficulties that may not have been considered in analytical studies. This paper presents a hardware-software system for exciting, monitoring and analyzing simultaneously a structure under earthquake signals and other types of signals in real-time. Effectiveness of the proposed system has been validated by experimental case studies and has been found to be a useful tool in the analysis of earthquake effects on structures.

  3. The VENUS/NWChem Software Package. Tight Coupling Between Chemical Dynamics Simulations and Electronic Structure Theory

    Energy Technology Data Exchange (ETDEWEB)

    Lourderaj, Upakarasamy; Sun, Rui; De Jong, Wibe A.; Windus, Theresa L.; Hase, William L.

    2014-03-01

    The interface for VENUS and NWChem, and the resulting software package for direct dynamics simulations are described. The coupling of the two codes is considered to be a tight coupling. The two codes are compiled and linked together and act as one executable with data being passed between the two codes through routine calls. The advantages of this type of coupling are discussed. The interface has been designed to have as little interference as possible with the core codes of both VENUS and NWChem. VENUS is the code that propagates the direct dynamics trajectories and, therefore, is the program that drives the overall execution of VENUS/NWChem. VENUS has remained an essentially sequential code, which uses the highly parallel structure of NWChem. Subroutines of the interface which accomplish the data transmission and communication between the two computer programs are described. Recent examples of the use of VENUS/NWChem for direct dynamics simulations are summarized.

  4. Ventilated buildings optimisation by using a coupled thermal-airflow simulation program

    DEFF Research Database (Denmark)

    Oropeza-Perez, Ivan; Østergaard, Poul Alberg; Remmen, Arne

    2011-01-01

    This work shows the optimization of natural ventilation within buildings at the stage of design and behaviour of the occupants. An evaluation is done by coupled multizone air modelling and thermal building simulation by using a deterministic set of input factors comprising among others climate......, local environment, building characteristics, building systems, behaviour of occupants, heat loads. Selected deterministic input factors were varied to generate additional information applied in an optimization loop. With that, it is found that the optimal solution depends to a great deal...... on the possibility of combined optimization of the behaviour of occupants with a lesser extent of the design building....

  5. Physics Simulation Software for Autonomous Propellant Loading and Gas House Autonomous System Monitoring

    Science.gov (United States)

    Regalado Reyes, Bjorn Constant

    2015-01-01

    1. Kennedy Space Center (KSC) is developing a mobile launching system with autonomous propellant loading capabilities for liquid-fueled rockets. An autonomous system will be responsible for monitoring and controlling the storage, loading and transferring of cryogenic propellants. The Physics Simulation Software will reproduce the sensor data seen during the delivery of cryogenic fluids including valve positions, pressures, temperatures and flow rates. The simulator will provide insight into the functionality of the propellant systems and demonstrate the effects of potential faults. This will provide verification of the communications protocols and the autonomous system control. 2. The High Pressure Gas Facility (HPGF) stores and distributes hydrogen, nitrogen, helium and high pressure air. The hydrogen and nitrogen are stored in cryogenic liquid state. The cryogenic fluids pose several hazards to operators and the storage and transfer equipment. Constant monitoring of pressures, temperatures and flow rates are required in order to maintain the safety of personnel and equipment during the handling and storage of these commodities. The Gas House Autonomous System Monitoring software will be responsible for constantly observing and recording sensor data, identifying and predicting faults and relaying hazard and operational information to the operators.

  6. Design of PLC Offline Simulation Software%PLC离线仿真软件的设计

    Institute of Scientific and Technical Information of China (English)

    夏端峰; 柯宗武; 姜楚乔

    2014-01-01

    PLC has been widely used in industrial automation. Before running on the PLC, a Ladder Chart must be carried out several times in pro-gram debugging on the PLC. There are problems of high cost and big risk issues when program development and debugging on the real PLC. Offline simulation software can replace the real PLC, complete this part of function better. Analyzes PLC offline simulation software design principles and implementation from the aspect of system architecture, functional requirements and the actual design.%PLC作为一种以微电脑为核心的自动控制装置,已经在工业自动化领域广泛应用。一个工业控制程序从设计到实际运行必须多次在PLC上进行程序调试,但实物PLC上进行程序开发、调试存在着成本高、风险大的问题。而PLC离线仿真软件可以替代实物PLC,较好地完成这部分功能。从PLC离线仿真软件整体系统结构、需要实现的功能及实际设计几个方面阐述PLC离线仿真软件的设计原理及实现方案。

  7. MetNet: Software to Build and Model the Biogenetic Lattice of Arabidopsis

    Directory of Open Access Journals (Sweden)

    Heike Hofmann

    2006-04-01

    Full Text Available MetNet (http://www.botany.iastate.edu/∼mash/metnetex/metabolicnetex.html is publicly available software in development for analysis of genome-wide RNA, protein and metabolite profiling data. The software is designed to enable the biologist to visualize, statistically analyse and model a metabolic and regulatory network map of Arabidopsis, combined with gene expression profiling data. It contains a JAVA interface to an interactions database (MetNetDB containing information on regulatory and metabolic interactions derived from a combination of web databases (TAIR, KEGG, BRENDA and input from biologists in their area of expertise. FCModeler captures input from MetNetDB in a graphical form. Sub-networks can be identified and interpreted using simple fuzzy cognitive maps. FCModeler is intended to develop and evaluate hypotheses, and provide a modelling framework for assessing the large amounts of data captured by high-throughput gene expression experiments. FCModeler and MetNetDB are currently being extended to three-dimensional virtual reality display. The MetNet map, together with gene expression data, can be viewed using multivariate graphics tools in GGobi linked with the data analytic tools in R. Users can highlight different parts of the metabolic network and see the relevant expression data highlighted in other data plots. Multi-dimensional expression data can be rotated through different dimensions. Statistical analysis can be computed alongside the visual. MetNet is designed to provide a framework for the formulation of testable hypotheses regarding the function of specific genes, and in the long term provide the basis for identification of metabolic and regulatory networks that control plant composition and development.

  8. The Simulation and Mapping of Building Performance Indicators based on European Weather Stations

    CERN Document Server

    van Schijndel, A W M

    2012-01-01

    Due to the climate change debate, a lot of research and maps of external climate parameters are available. However, maps of indoor climate performance parameters are still lacking. This paper presents a methodology for obtaining maps of performances of similar buildings that are virtually spread over whole Europe. The produced maps are useful for analyzing regional climate influence on building performance indicators such as energy use and indoor climate. This is shown using the Bestest building as a reference benchmark. An important application of the mapping tool is the visualization of potential building measures over the EU. Also the performances of single building components can be simulated and mapped. It is concluded that the presented method is efficient as it takes less than 15 minutes to simulate and produce the maps on a 2.6GHz/4GB computer. Moreover, the approach is applicable for any type of building.

  9. MATHEMATICAL MODEL FOR THE SIMULATION OF WATER QUALITY IN RIVERS USING THE VENSIM PLE® SOFTWARE

    Directory of Open Access Journals (Sweden)

    Julio Cesar de S. I. Gonçalves

    2013-06-01

    Full Text Available Mathematical modeling of water quality in rivers is an important tool for the planning and management of water resources. Nevertheless, the available models frequently show structural and functional limitations. With the objective of reducing these drawbacks, a new model has been developed to simulate water quality in rivers under unsteady conditions; this model runs on the Vensim PLE® software and can also be operated for steady-state conditions. The following eighteen water quality variables can be simulated: DO, BODc, organic nitrogen (No, ammonia nitrogen (Na, nitrite (Ni, nitrate (Nn, organic and inorganic phosphorus (Fo and Fi, respectively, inorganic solids (Si, phytoplankton (F, zooplankton (Z, bottom algae (A, detritus (D, total coliforms (TC, alkalinity (Al., total inorganic carbon (TIC, pH, and temperature (T. Methane as well as nitrogen and phosphorus compounds that are present in the aerobic and anaerobic layers of the sediment can also be simulated. Several scenarios were generated for computational simulations produced using the new model by using the QUAL2K program, and, when possible, analytical solutions. The results obtained using the new model strongly supported the results from the QUAL family and analytical solutions.

  10. Automatic insertion of simulated microcalcification clusters in a software breast phantom

    Science.gov (United States)

    Shankla, Varsha; Pokrajac, David D.; Weinstein, Susan P.; DeLeo, Michael; Tuite, Catherine; Roth, Robyn; Conant, Emily F.; Maidment, Andrew D.; Bakic, Predrag R.

    2014-03-01

    An automated method has been developed to insert realistic clusters of simulated microcalcifications (MCs) into computer models of breast anatomy. This algorithm has been developed as part of a virtual clinical trial (VCT) software pipeline, which includes the simulation of breast anatomy, mechanical compression, image acquisition, image processing, display and interpretation. An automated insertion method has value in VCTs involving large numbers of images. The insertion method was designed to support various insertion placement strategies, governed by probability distribution functions (pdf). The pdf can be predicated on histological or biological models of tumor growth, or estimated from the locations of actual calcification clusters. To validate the automated insertion method, a 2-AFC observer study was designed to compare two placement strategies, undirected and directed. The undirected strategy could place a MC cluster anywhere within the phantom volume. The directed strategy placed MC clusters within fibroglandular tissue on the assumption that calcifications originate from epithelial breast tissue. Three radiologists were asked to select between two simulated phantom images, one from each placement strategy. Furthermore, questions were posed to probe the rationale behind the observer's selection. The radiologists found the resulting cluster placement to be realistic in 92% of cases, validating the automated insertion method. There was a significant preference for the cluster to be positioned on a background of adipose or mixed adipose/fibroglandular tissues. Based upon these results, this automated lesion placement method will be included in our VCT simulation pipeline.

  11. CFD Simulation of Air Velocity Distribution in Occupied Livestock Buildings

    OpenAIRE

    Svidt, Kjeld; Zhang, G.; Bjerg, B.

    1998-01-01

    In modem livestock buildings the design of the ventilation systems is important in order to obtain good air distribution. The use of Computational Fluid Dynamics for predicting the air flow and air quality makes it possible to include the effect of room geometry, equipment and occupants in the design of ventilation systems. However, it is not appropriate to include the detailed geometry of a large group of lying or standing animals affecting the air flow in the building.It is necessary to hav...

  12. Open Source Software Openfoam as a New Aerodynamical Simulation Tool for Rocket-Borne Measurements

    Science.gov (United States)

    Staszak, T.; Brede, M.; Strelnikov, B.

    2015-09-01

    The only way to do in-situ measurements, which are very important experimental studies for atmospheric science, in the mesoshere/lower thermosphere (MLT) is to use sounding rockets. The drawback of using rockets is the shock wave appearing because of the very high speed of the rocket motion (typically about 1000 mIs). This shock wave disturbs the density, the temperature and the velocity fields in the vicinity of the rocket, compared to undisturbed values of the atmosphere. This effect, however, can be quantified and the measured data has to be corrected not just to make it more precise but simply usable. The commonly accepted and widely used tool for this calculations is the Direct Simulation Monte Carlo (DSMC) technique developed by GA. Bird which is available as stand-alone program limited to use a single processor. Apart from complications with simulations of flows around bodies related to different flow regimes in the altitude range of MLT, that rise due to exponential density change by several orders of magnitude, a particular hardware configuration introduces significant difficulty for aerodynamical calculations due to choice of the grid sizes mainly depending on the demands on adequate DSMCs and good resolution of geometries with scale differences of factor of iO~. This makes either the calculation time unreasonably long or even prevents the calculation algorithm from converging. In this paper we apply the free open source software OpenFOAM (licensed under GNU GPL) for a three-dimensional CFD-Simulation of a flow around a sounding rocket instrumentation. An advantage of this software package, among other things, is that it can run on high performance clusters, which are easily scalable. We present the first results and discuss the potential of the new tool in applications for sounding rockets.

  13. PUPIL: A systematic approach to software integration in multi-scale simulations

    Science.gov (United States)

    Torras, Juan; He, Yao; Cao, Chao; Muralidharan, Krishna; Deumens, E.; Cheng, H.-P.; Trickey, S. B.

    2007-08-01

    We present a relatively straightforward way to integrate existing software packages into a full multi-scale simulation package in which each application runs in its own address space and there is no run-time intervention by the researcher. The PUPIL (Program for User Package Interfacing and Linking) architectural concept is to provide a simulation Supervisor, implemented as a Manager and various Workers which involve small wrapper interfaces written and installed within each application package and various communication services. The different, autonomous packages ("Calculation Units") are plugged into the PUPIL system which one then operates as a software driver for them. Well-defined protocols are provided for communication between the different Calculation Units and the PUPIL system. The CORBA communication protocol is used to exchange information between running processes. All simulation directives from the user are stored in an XML file that is interpreted by the PUPIL Manager and Workers. An initial version has been designed using the Object Oriented (OO) paradigm and implemented in Java as a fast prototyping language. Tests of implementation ease and of operational correctness (on toy physical systems) have been carried out. In the former category, we document how interfaces to both DL_POLY and SIESTA were done relatively straightforwardly. In the latter category, the most demanding test was the joining of three different packages to do a MD calculation with pattern recognition to identify the QM-forces region and an external QM force calculation. The results show that PUPIL provides ease of operation and maintenance with little overhead.

  14. Onboard utilization of ground control points for image correction. Volume 3: Ground control point simulation software design

    Science.gov (United States)

    1981-01-01

    The software developed to simulate the ground control point navigation system is described. The Ground Control Point Simulation Program (GCPSIM) is designed as an analysis tool to predict the performance of the navigation system. The system consists of two star trackers, a global positioning system receiver, a gyro package, and a landmark tracker.

  15. Comparison of simplified and advanced building simulation tool with measured data

    DEFF Research Database (Denmark)

    Christensen, Jørgen Erik; Schiønning, Peder; Dethlefsen, Espen

    2013-01-01

    In the future building design must progress to a format where CO 2 neutral societies are optimized as a whole and innovative technologies integrated. The purpose of this paper is to demonstrate the problems using a simplified design tool to simulate a complicated building and how this may not give...

  16. Issues to Be Solved for Energy Simulation of An Existing Office Building

    Directory of Open Access Journals (Sweden)

    Ki Uhn Ahn

    2016-04-01

    Full Text Available With the increasing focus on low energy buildings and the need to develop sustainable built environments, Building Energy Performance Simulation (BEPS tools have been widely used. However, many issues remain when applying BEPS tools to existing buildings. This paper presents the issues that need to be solved for the application of BEPS tools to an existing office building. The selected building is an office building with 33 stories above ground, six underground levels, and a total floor area of 91,898 m2. The issues to be discussed in this paper are as follows: (1 grey data not ready for simulation; (2 subjective assumptions and judgments on energy modeling; (3 stochastic characteristics of building performance and occupants behavior; (4 verification of model fidelity-comparison of aggregated energy; (5 verification of model fidelity-calibration by trial and error; and (6 use of simulation model for real-time energy management. This study investigates the aforementioned issues and explains the factors that should be considered to address these issues when developing a dynamic simulation model for existing buildings.

  17. Modeling and simulation of the energy use in an occupied residential building in cold climate

    International Nuclear Information System (INIS)

    Highlights: ► An overview of the energy-characteristics based on illustrations in graphical figures. ► Figures to support identification and validation energy refurbishment measures. ► Emphasizing energy efficiency measures in early stage of building design. -- Abstract: In order to reduce the energy use in the building sector there is a demand for tools that can identify significant building energy performance parameters. In the work introduced in this paper presents a methodology, based on a simulation module and graphical figures, for interactive investigations of the building energy performance. The building energy use simulation program is called TEKLA and is using EN832 with an improved procedure in calculating the heat loss through the floor and the solar heat gain. The graphical figures are simple and are illustrating the savings based on retrofit measures and climate conditions. The accuracy of the TEKLA simulation was investigated on a typical single-family building in Sweden for a period of time in a space heating demand of relatively cold and mild climate. The model was found applicable for relative investigations. Further, the methodology was applied on a typical single family reference building. The climate data from three locations in Sweden were collected and a set of relevant measures were studied. The investigated examples illustrate how decisions in the early stages of the building design process can have decisive importance on the final building energy performance.

  18. Assessment of Retrofitting Measures for a Large Historic Research Facility Using a Building Energy Simulation Model

    OpenAIRE

    Young Tae Chae; Lee, Young M.; David Longinott

    2016-01-01

    A calibrated building simulation model was developed to assess the energy performance of a large historic research building. The complexity of space functions and operational conditions with limited availability of energy meters makes it hard to understand the end-used energy consumption in detail and to identify appropriate retrofitting options for reducing energy consumption and greenhouse gas (GHG) emissions. An energy simulation model was developed to study the energy usage patterns not o...

  19. Next Processor Module: A Hardware Accelerator of UT699 LEON3-FT System for On-Board Computer Software Simulation

    Science.gov (United States)

    Langlois, Serge; Fouquet, Olivier; Gouy, Yann; Riant, David

    2014-08-01

    On-Board Computers (OBC) are more and more using integrated systems on-chip (SOC) that embed processors running from 50MHz up to several hundreds of MHz, and around which are plugged some dedicated communication controllers together with other Input/Output channels. For ground testing and On-Board SoftWare (OBSW) validation purpose, a representative simulation of these systems, faster than real-time and with cycle-true timing of execution, is not achieved with current purely software simulators. Since a few years some hybrid solutions where put in place ([1], [2]), including hardware in the loop so as to add accuracy and performance in the computer software simulation. This paper presents the results of the works engaged by Thales Alenia Space (TAS-F) at the end of 2010, that led to a validated HW simulator of the UT699 by mid- 2012 and that is now qualified and fully used in operational contexts.

  20. Building America House Simulation Protocols - Revised October 2010

    Energy Technology Data Exchange (ETDEWEB)

    None

    2010-10-01

    This document was developed to track and manage progress toward multi-year, average whole-building energy reduction research goals for new construction and existing homes, using a consistent reference point. This report corrects editorial errors that were in the original publication.

  1. CFD Simulation of Air Velocity Distribution in Occupied Livestock Buildings

    DEFF Research Database (Denmark)

    Svidt, Kjeld; Zhang, G.; Bjerg, B.

    In modem livestock buildings the design of the ventilation systems is important in order to obtain good air distribution. The use of Computational Fluid Dynamics for predicting the air flow and air quality makes it possible to include the effect of room geometry, equipment and occupants in the de...

  2. Redesigning Terraced Social Housing in the UK for Flexibility Using Building Energy Simulation with Consideration of Passive Design

    Directory of Open Access Journals (Sweden)

    Hasim Altan

    2015-05-01

    Full Text Available A chosen case study house forms the basis of this paper, which is a pilot energy-efficient social housing project, completed by one of the largest housing developers in the UK. The main aim of this study is to inform the redesign of flexible energy-efficient housing units. The housing, designed for social tenants, was built by the Accent Group in 2005, using modern construction methods and sustainable materials, based on extensive research from the adaptable and “Grow Home” principles of Avi Friedman as well as open building implementation. The first pilot scheme was designed in collaboration with the Building Energy Analysis Unit at the University of Sheffield, together with the Goddard Wybor Practise, and was a successful housing development with respect to being environmentally friendly and a low-energy design scheme for the UK climate. This paper presents redesigning of flexible terraced housing units, and their performance evaluation, using a building simulation method as well as the passive-house planning package. The aim was to plan a row of terraced houses that can not only utilize a flexible design concept in floor planning layout, but also to reduce energy consumption with a passive design with particular attention paid to material selection. In addition, building simulation work has been carried out with the use of DesignBuilder software for both thermal and energy performance evaluation. The study examines the annual energy performance and comfort conditions in the designed house to be situated in the Northeast of England, UK. A terraced house unit design is considered a flexible home that can adjust to the needs of different tenants for the purpose of achieving a sustainable building under different aspects, such as low energy, low carbon, use of renewables, and low impact materials, with flexibility by design.

  3. Poverty Simulations: Building Relationships among Extension, Schools, and the Community

    Science.gov (United States)

    Franck, Karen L.; Barnes, Shelly; Harrison, Julie

    2016-01-01

    Poverty simulations can be effective experiential learning tools for educating community members about the impact of poverty on families. The project described here includes survey results from three simulations with community leaders and teachers. This project illustrated how such workshops can help Extension professionals extend their reach and…

  4. Ranking of Business Process Simulation Software Tools with DEX/QQ Hierarchical Decision Model.

    Directory of Open Access Journals (Sweden)

    Nadja Damij

    Full Text Available The omnipresent need for optimisation requires constant improvements of companies' business processes (BPs. Minimising the risk of inappropriate BP being implemented is usually performed by simulating the newly developed BP under various initial conditions and "what-if" scenarios. An effectual business process simulations software (BPSS is a prerequisite for accurate analysis of an BP. Characterisation of an BPSS tool is a challenging task due to the complex selection criteria that includes quality of visual aspects, simulation capabilities, statistical facilities, quality reporting etc. Under such circumstances, making an optimal decision is challenging. Therefore, various decision support models are employed aiding the BPSS tool selection. The currently established decision support models are either proprietary or comprise only a limited subset of criteria, which affects their accuracy. Addressing this issue, this paper proposes a new hierarchical decision support model for ranking of BPSS based on their technical characteristics by employing DEX and qualitative to quantitative (QQ methodology. Consequently, the decision expert feeds the required information in a systematic and user friendly manner. There are three significant contributions of the proposed approach. Firstly, the proposed hierarchical model is easily extendible for adding new criteria in the hierarchical structure. Secondly, a fully operational decision support system (DSS tool that implements the proposed hierarchical model is presented. Finally, the effectiveness of the proposed hierarchical model is assessed by comparing the resulting rankings of BPSS with respect to currently available results.

  5. Ranking of Business Process Simulation Software Tools with DEX/QQ Hierarchical Decision Model.

    Science.gov (United States)

    Damij, Nadja; Boškoski, Pavle; Bohanec, Marko; Mileva Boshkoska, Biljana

    2016-01-01

    The omnipresent need for optimisation requires constant improvements of companies' business processes (BPs). Minimising the risk of inappropriate BP being implemented is usually performed by simulating the newly developed BP under various initial conditions and "what-if" scenarios. An effectual business process simulations software (BPSS) is a prerequisite for accurate analysis of an BP. Characterisation of an BPSS tool is a challenging task due to the complex selection criteria that includes quality of visual aspects, simulation capabilities, statistical facilities, quality reporting etc. Under such circumstances, making an optimal decision is challenging. Therefore, various decision support models are employed aiding the BPSS tool selection. The currently established decision support models are either proprietary or comprise only a limited subset of criteria, which affects their accuracy. Addressing this issue, this paper proposes a new hierarchical decision support model for ranking of BPSS based on their technical characteristics by employing DEX and qualitative to quantitative (QQ) methodology. Consequently, the decision expert feeds the required information in a systematic and user friendly manner. There are three significant contributions of the proposed approach. Firstly, the proposed hierarchical model is easily extendible for adding new criteria in the hierarchical structure. Secondly, a fully operational decision support system (DSS) tool that implements the proposed hierarchical model is presented. Finally, the effectiveness of the proposed hierarchical model is assessed by comparing the resulting rankings of BPSS with respect to currently available results.

  6. Ranking of Business Process Simulation Software Tools with DEX/QQ Hierarchical Decision Model.

    Science.gov (United States)

    Damij, Nadja; Boškoski, Pavle; Bohanec, Marko; Mileva Boshkoska, Biljana

    2016-01-01

    The omnipresent need for optimisation requires constant improvements of companies' business processes (BPs). Minimising the risk of inappropriate BP being implemented is usually performed by simulating the newly developed BP under various initial conditions and "what-if" scenarios. An effectual business process simulations software (BPSS) is a prerequisite for accurate analysis of an BP. Characterisation of an BPSS tool is a challenging task due to the complex selection criteria that includes quality of visual aspects, simulation capabilities, statistical facilities, quality reporting etc. Under such circumstances, making an optimal decision is challenging. Therefore, various decision support models are employed aiding the BPSS tool selection. The currently established decision support models are either proprietary or comprise only a limited subset of criteria, which affects their accuracy. Addressing this issue, this paper proposes a new hierarchical decision support model for ranking of BPSS based on their technical characteristics by employing DEX and qualitative to quantitative (QQ) methodology. Consequently, the decision expert feeds the required information in a systematic and user friendly manner. There are three significant contributions of the proposed approach. Firstly, the proposed hierarchical model is easily extendible for adding new criteria in the hierarchical structure. Secondly, a fully operational decision support system (DSS) tool that implements the proposed hierarchical model is presented. Finally, the effectiveness of the proposed hierarchical model is assessed by comparing the resulting rankings of BPSS with respect to currently available results. PMID:26871694

  7. Ranking of Business Process Simulation Software Tools with DEX/QQ Hierarchical Decision Model

    Science.gov (United States)

    2016-01-01

    The omnipresent need for optimisation requires constant improvements of companies’ business processes (BPs). Minimising the risk of inappropriate BP being implemented is usually performed by simulating the newly developed BP under various initial conditions and “what-if” scenarios. An effectual business process simulations software (BPSS) is a prerequisite for accurate analysis of an BP. Characterisation of an BPSS tool is a challenging task due to the complex selection criteria that includes quality of visual aspects, simulation capabilities, statistical facilities, quality reporting etc. Under such circumstances, making an optimal decision is challenging. Therefore, various decision support models are employed aiding the BPSS tool selection. The currently established decision support models are either proprietary or comprise only a limited subset of criteria, which affects their accuracy. Addressing this issue, this paper proposes a new hierarchical decision support model for ranking of BPSS based on their technical characteristics by employing DEX and qualitative to quantitative (QQ) methodology. Consequently, the decision expert feeds the required information in a systematic and user friendly manner. There are three significant contributions of the proposed approach. Firstly, the proposed hierarchical model is easily extendible for adding new criteria in the hierarchical structure. Secondly, a fully operational decision support system (DSS) tool that implements the proposed hierarchical model is presented. Finally, the effectiveness of the proposed hierarchical model is assessed by comparing the resulting rankings of BPSS with respect to currently available results. PMID:26871694

  8. Development and Implementation of Software for Visualizing and Editing Multidimensional Flight Simulation Input Data

    Science.gov (United States)

    Whelan, Todd Michael

    1996-01-01

    In a real-time or batch mode simulation that is designed to model aircraft dynamics over a wide range of flight conditions, a table look- up scheme is implemented to determine the forces and moments on the vehicle based upon the values of parameters such as angle of attack, altitude, Mach number, and control surface deflections. Simulation Aerodynamic Variable Interface (SAVI) is a graphical user interface to the flight simulation input data, designed to operate on workstations that support X Windows. The purpose of the application is to provide two and three dimensional visualization of the data, to allow an intuitive sense of the data set. SAVI also allows the user to manipulate the data, either to conduct an interactive study of the influence of changes on the vehicle dynamics, or to make revisions to data set based on new information such as flight test. This paper discusses the reasons for developing the application, provides an overview of its capabilities, and outlines the software architecture and operating environment.

  9. New software library of geometrical primitives for modeling of solids used in Monte Carlo detector simulations

    International Nuclear Information System (INIS)

    We present our effort for the creation of a new software library of geometrical primitives, which are used for solid modeling in Monte Carlo detector simulations. We plan to replace and unify the current implementations for geometrical primitive classes in the software projects Geant4 and ROOT with this library. Each solid is implemented as a C++ class providing methods to compute distances of rays to the surface of a solid or to find whether a position is located inside, outside or on the surface of the solid. A numerical tolerance is used for determining whether a position is on the surface. The class methods also contain basic support for visualization. We use dedicated test suites for the validation of the code; these also include performance and consistency tests used for the analysis of candidate implementations of class methods for the new library. We have implemented simple adapter classes to allow the use of the new optimized solids with Geant4 and ROOT geometries.

  10. Software Abstractions and Methodologies for HPC Simulation Codes on Future Architectures

    Directory of Open Access Journals (Sweden)

    Anshu Dubey

    2014-07-01

    Full Text Available Simulations with multi-physics modeling have become crucial to many science and engineering fields, and multi-physics capable scientific software is as important to these fields as instruments and facilities are to experimental sciences. The current generation of mature multi-physics codes would have sustainably served their target communities with modest amount of ongoing investment for enhancing capabilities. However, the revolution occurring in the hardware architecture has made it necessary to tackle the parallelism and performance management in these codes at multiple levels. The requirements of various levels are often at cross-purposes with one another, and therefore hugely complicate the software design. All of these considerations make it essential to approach this challenge cooperatively as a community. We conducted a series of workshops under an NSF-SI2 conceptualization grant to get input from various stakeholders, and to identify broad approaches that might lead to a solution. In this position paper we detail the major concerns articulated by the application code developers, and emerging trends in utilization of programming abstractions that we found through these workshops.

  11. DEVELOPMENT OF A SOFTWARE DESIGN TOOL FOR HYBRID SOLAR-GEOTHERMAL HEAT PUMP SYSTEMS IN HEATING- AND COOLING-DOMINATED BUILDINGS

    Energy Technology Data Exchange (ETDEWEB)

    Yavuzturk, C. C. [Univ. of Hartford, West Hartford, CT (United States); Chiasson, A. D. [Univ. of Hartford, West Hartford, CT (United States); Filburn, T. P. [Univ. of Hartford, West Hartford, CT (United States)

    2012-11-29

    This project provides an easy-to-use, menu-driven, software tool for designing hybrid solar-geothermal heat pump systems (GHP) for both heating- and cooling-dominated buildings. No such design tool currently exists. In heating-dominated buildings, the design approach takes advantage of glazed solar collectors to effectively balance the annual thermal loads on the ground with renewable solar energy. In cooling-dominated climates, the design approach takes advantage of relatively low-cost, unglazed solar collectors as the heat rejecting component. The primary benefit of hybrid GHPs is the reduced initial cost of the ground heat exchanger (GHX). Furthermore, solar thermal collectors can be used to balance the ground loads over the annual cycle, thus making the GHX fully sustainable; in heating-dominated buildings, the hybrid energy source (i.e., solar) is renewable, in contrast to a typical fossil fuel boiler or electric resistance as the hybrid component; in cooling-dominated buildings, use of unglazed solar collectors as a heat rejecter allows for passive heat rejection, in contrast to a cooling tower that consumes a significant amount of energy to operate, and hybrid GHPs can expand the market by allowing reduced GHX footprint in both heating- and cooling-dominated climates. The design tool allows for the straight-forward design of innovative GHP systems that currently pose a significant design challenge. The project lays the foundations for proper and reliable design of hybrid GHP systems, overcoming a series of difficult and cumbersome steps without the use of a system simulation approach, and without an automated optimization scheme. As new technologies and design concepts emerge, sophisticated design tools and methodologies must accompany them and be made usable for practitioners. Lack of reliable design tools results in reluctance of practitioners to implement more complex systems. A menu-driven software tool for the design of hybrid solar GHP systems is

  12. Cheating Literacy: The Limitations of Simulated Classroom Discourse in Educational Software for Children

    Science.gov (United States)

    Walton, Marion

    2007-01-01

    This paper presents a multimodal discourse analysis of children using "drill-and-practice" literacy software at a primary school in the Western Cape, South Africa. The children's interactions with the software are analysed. The software has serious limitations which arise from the global political economy of the educational software industry. The…

  13. Developing a Generic Risk Assessment Simulation Modelling Software Tool for Assessing the Risk of Foot and Mouth Virus Introduction.

    Science.gov (United States)

    Tameru, B; Gebremadhin, B; Habtemariam, T; Nganwa, D; Ayanwale, O; Wilson, S; Robnett, V; Wilson, W

    2008-06-01

    Foot and Mouth disease (FMD) is a highly contagious viral disease that affects all cloven-hoofed animals. Because of its devastating effects on the agricultural industry, many countries take measures to stop the introduction of FMD virus into their countries. Decision makers at multiple levels of the United States Department of Agriculture (USDA) use Risk Assessments (RAs) (both quantitative and qualitative) to make better and more informed scientifically based decisions to prevent the accidental or intentional introduction of the disease. There is a need for a generic RA that can be applied to any country (whether FMD free or non-FMD free) and for any product (FMD infected animals and animal products). We developed a user-friendly generic RA tool (software) that can be used to conduct and examine different scenarios of quantitative/qualitative risk assessments for the different countries with their varying FMD statuses in relation to reintroduction of FMD virus into the USA. The program was written in Microsoft Visual Basic 6.0 (Microsoft Corporation, Redmond, Washington, USA). The @Risk 6.1 Developer Kit (RDK) and @Risk 6.1 Best Fit Kit library (Palisade Corporation, Newfield, NY.USA) was used to build Monte Carlo simulation models. Microsoft Access 2000 (Microsoft Corporation, Redmond, Washington, USA) was used and SQL to query the data. Different input probability distributions can be selected for the nodes in the scenario tree and different output for each end-state of the simulation is given in different graphical formats and statistical values are used in describing the likelihood of FMD virus introduction. Sensitivity Analysis in determining which input factor has more effect on the total risk outputs is also given. The developed generic RA tools can be eventually extended and modified to conduct RAs for other animal diseases and animal products. PMID:25411550

  14. A Visual Basic simulation software tool for performance analysis of a membrane-based advanced water treatment plant.

    Science.gov (United States)

    Pal, P; Kumar, R; Srivastava, N; Chowdhury, J

    2014-02-01

    A Visual Basic simulation software (WATTPPA) has been developed to analyse the performance of an advanced wastewater treatment plant. This user-friendly and menu-driven software is based on the dynamic mathematical model for an industrial wastewater treatment scheme that integrates chemical, biological and membrane-based unit operations. The software-predicted results corroborate very well with the experimental findings as indicated in the overall correlation coefficient of the order of 0.99. The software permits pre-analysis and manipulation of input data, helps in optimization and exhibits performance of an integrated plant visually on a graphical platform. It allows quick performance analysis of the whole system as well as the individual units. The software first of its kind in its domain and in the well-known Microsoft Excel environment is likely to be very useful in successful design, optimization and operation of an advanced hybrid treatment plant for hazardous wastewater.

  15. Building cell models and simulations from microscope images.

    Science.gov (United States)

    Murphy, Robert F

    2016-03-01

    The use of fluorescence microscopy has undergone a major revolution over the past twenty years, both with the development of dramatic new technologies and with the widespread adoption of image analysis and machine learning methods. Many open source software tools provide the ability to use these methods in a wide range of studies, and many molecular and cellular phenotypes can now be automatically distinguished. This article presents the next major challenge in microscopy automation, the creation of accurate models of cell organization directly from images, and reviews the progress that has been made towards this challenge. PMID:26484733

  16. Building Blocks for the Rapid Development of Parallel Simulations Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Scientists need to be able to quickly develop and run parallel simulations without paying the high price of writing low-level message passing codes using compiled...

  17. Numerical simulation and exergetic analysis of building ventilation solar chimneys

    International Nuclear Information System (INIS)

    Highlights: • Exergetic analysis of a building ventilation solar chimney. • Numerical CFD model developed, validated and employed to study the flow. • Analysis of the solar chimney energy and exergy efficiencies. • Mechanical and thermal exergy distributions have been analysed. • Crucial points in the chimney identified to improve its performance. - Abstract: The solar chimneys used in buildings are passive solar devices which improve natural ventilation. A detailed exergetic analysis has been developed in this work, both for general balance and specific variables. To apply this analysis, a three-dimensional CFD model has been built and validated with bibliographic experimental data. The values of the variables have been examined both inside and at the exit of the solar chimney, resulting in a detailed description of the inner phenomena and parameters influencing the exergetic efficiency. The results of this study offer new tools: a numerical methodology and an exergetic analysis, to improve the design of building ventilation solar chimneys. It also affords a deeper understanding of the thermal and fluid-dynamic behaviour, and suggests some qualitative improvements. However, the numerical data obtained from the case studied, show that solar chimneys as natural ventilation systems offer quite a small efficiency and will remain within the sphere of architectural decisions

  18. Development of Efficient Finite Element Software of Crack Propagation Simulation using Adaptive Mesh Strategy

    Directory of Open Access Journals (Sweden)

    Abdulnaser M. Alshoaibi

    2009-01-01

    Full Text Available The purpose of this study is on the determination of 2D crack paths and surfaces as well as on the evaluation of the stress intensity factors as a part of the damage tolerant assessment. Problem statement: The evaluation of SIFs and crack tip singular stresses for arbitrary fracture structure are a challenging problem, involving the calculation of the crack path and the crack propagation rates at each step especially under mixed mode loading. Approach: This study was provided a finite element code which produces results comparable to the current available commercial software. Throughout the simulation of crack propagation an automatic adaptive mesh was carried out in the vicinity of the crack front nodes and in the elements which represent the higher stresses distribution. The finite element mesh was generated using the advancing front method. The adaptive remising process carried out based on the posteriori stress error norm scheme to obtain an optimal mesh. The onset criterion of crack propagation was based on the stress intensity factors which provide as the most important parameter that must be accurately estimated. Facilitated by the singular elements, the displacement extrapolation technique is employed to calculate the stress intensity factor. Crack direction is predicted using the maximum circumferential stress theory. The fracture was modeled by the splitting node approach and the trajectory follows the successive linear extensions of each crack increment. The propagation process is driven by Linear Elastic Fracture Mechanics (LEFM approach with minimum user interaction. Results: In evaluating the accuracy of the estimated stress intensity factors and the crack path predictions, the results were compared with sets of experimental data, benchmark analytical solutions as well as numerical results of other researchers. Conclusion/Recommendations: The assessment indicated that the program was highly reliable to evaluate the stress intensity

  19. SIMULATION OF TSUNAMI FORCE ON ROWS OF BUILDINGS IN ACEH REGION AFTER TSUNAMI DISASTER IN 2004

    Directory of Open Access Journals (Sweden)

    Radianta Triatmadja

    2014-10-01

    Full Text Available After the Indian Ocean Tsunami 2004 in Aceh, houses and other buildings were reconstructed by government and Non-Governmental Organizations (NGO. The new buildings near the coastline are open directly to similar tsunami attack. The layout of such new residential are normally arranged and aligned as rows of buildings. The front rows of the buildings suffer more tsunami force due to their location that are closer to the beach and the effect of the reflection from the adjacent buildings. This research aims to analyze the tsunami force on buildings of different types, and the effect of other buildings nearby. The research was conducted using a physical model at the Hydraulic and Hydrology Laboratory, Research Centre for Engineering Science, Universitas Gadjah Mada Indonesia. The physical model simulations were carried out in a flume of 24 m long, 1.45 m wide, and 1.5 m high, that was facilitated with tsunami generator based on dam break system. The models of the buildings were made of plywood and were placed in a row perpendicular to the flume. The distance between the buildings was varied to observe the effect of the gaps. The results show that the force on the building depends on the gap between the buildings. Although the effect of the gap was more significant on low buildings, the effect of force on high buildings was more sensitive to the change of the gap size. Simple equation for practical use is proposed to calculate the tsunami force on building with the effect of nearby buildings.

  20. Energy Efficiency in Residential Buildings in Mozambique - Measurements and Simulations

    OpenAIRE

    Auziane, Gabriel

    2015-01-01

    Mozambique, situated in south-east Africa, has sub-tropical and tropical climate and plenty of natural resources for energy production. The country is however poor, and only about 25% of the population has access to electricity from the grid. A very large part of the energy used in the country is used in the residential sector, and there is a general lack of knowledge, regulations and tools concerning energy efficiency in buildings. The aim of this work is to contribute to a framework o...

  1. Motor Vehicle Emission Modeling and Software Simulation Computing for Roundabout in Urban City

    Directory of Open Access Journals (Sweden)

    Haiwei Wang

    2013-01-01

    Full Text Available In urban road traffic systems, roundabout is considered as one of the core traffic bottlenecks, which are also a core impact of vehicle emission and city environment. In this paper, we proposed a transport control and management method for solving traffic jam and reducing emission in roundabout. The platform of motor vehicle testing system and VSP-based emission model was established firstly. By using the topology chart of the roundabout and microsimulation software, we calculated the instantaneous emission rates of different vehicle and total vehicle emissions. We argued that Integration-Model, combing traffic simulation and vehicle emission, can be performed to calculate the instantaneous emission rates of different vehicle and total vehicle emissions at the roundabout. By contrasting the exhaust emissions result between no signal control and signal control in this area at the rush hour, it draws a conclusion that setting the optimizing signal control can effectively reduce the regional vehicle emission. The proposed approach has been submitted to a simulation and experiment that involved an environmental assessment in Satellite Square, a roundabout in medium city located in China. It has been verified that setting signal control with knowledge engineering and Integration-Model is a practical way for solving the traffic jams and environmental pollution.

  2. Biology Students Building Computer Simulations Using StarLogo TNG

    Science.gov (United States)

    Smith, V. Anne; Duncan, Ishbel

    2011-01-01

    Confidence is an important issue for biology students in handling computational concepts. This paper describes a practical in which honours-level bioscience students simulate complex animal behaviour using StarLogo TNG, a freely-available graphical programming environment. The practical consists of two sessions, the first of which guides students…

  3. Modeling And Simulation Of Bar Code Scanners Using Computer Aided Design Software

    Science.gov (United States)

    Hellekson, Ron; Campbell, Scott

    1988-06-01

    Many optical systems have demanding requirements to package the system in a small 3 dimensional space. The use of computer graphic tools can be a tremendous aid to the designer in analyzing the optical problems created by smaller and less costly systems. The Spectra Physics grocery store bar code scanner employs an especially complex 3 dimensional scan pattern to read bar code labels. By using a specially written program which interfaces with a computer aided design system, we have simulated many of the functions of this complex optical system. In this paper we will illustrate how a recent version of the scanner has been designed. We will discuss the use of computer graphics in the design process including interactive tweaking of the scan pattern, analysis of collected light, analysis of the scan pattern density, and analysis of the manufacturing tolerances used to build the scanner.

  4. eWaterCycle: Building an operational global Hydrological forecasting system based on standards and open source software

    Science.gov (United States)

    Drost, Niels; Bierkens, Marc; Donchyts, Gennadii; van de Giesen, Nick; Hummel, Stef; Hut, Rolf; Kockx, Arno; van Meersbergen, Maarten; Sutanudjaja, Edwin; Verlaan, Martin; Weerts, Albrecht; Winsemius, Hessel

    2015-04-01

    At EGU 2015, the eWaterCycle project (www.ewatercycle.org) will launch an operational high-resolution Hydrological global model, including 14 day ensemble forecasts. Within the eWaterCycle project we aim to use standards and open source software as much as possible. This ensures the sustainability of the software created, and the ability to swap out components as newer technologies and solutions become available. It also allows us to build the system much faster than would otherwise be the case. At the heart of the eWaterCycle system is the PCRGLOB-WB Global Hydrological model (www.globalhydrology.nl) developed at Utrecht University. Version 2.0 of this model is implemented in Python, and models a wide range of Hydrological processes at 10 x 10km (and potentially higher) resolution. To assimilate near-real time satellite data into the model, and run an ensemble forecast we use the OpenDA system (www.openda.org). This allows us to make use of different data assimilation techniques without the need to implement these from scratch. As a data assimilation technique we currently use (variant of) an Ensemble Kalman Filter, specifically optimized for High Performance Computing environments. Coupling of the model with the DA is done with the Basic Model Interface (BMI), developed in the framework of the Community Surface Dynamics Modeling System (CSDMS) (csdms.colorado.edu). We have added support for BMI to PCRGLOB-WB, and developed a BMI adapter for OpenDA, allowing OpenDA to use any BMI compatible model. We currently use multiple different BMI models with OpenDA, already showing the benefits of using this standard. Throughout the system, all file based input and output is done via NetCDF files. We use several standard tools to be used for pre- and post-processing data. Finally we use ncWMS, an NetCDF based implementation of the Web Map Service (WMS) protocol to serve the forecasting result. We have build a 3D web application based on Cesium.js to visualize the output. In

  5. Simulated performance of the Thermo Active Building System (TABS) with respect to the provided thermal comfort and primary energy use

    DEFF Research Database (Denmark)

    Kolarik, Jakub; Olesen, Bjarne W.; Toftum, Jørn

    2009-01-01

    The central module of an office building conditioned by a Thermo Active Building System (TABS) coupled with constant volume ventilation was evaluated by means of dynamic computer simulations. Additionally, the same building model was simulated with a conventional all air VAV ventilation system for...

  6. Virtual Design Studio (VDS) - Development of an Integrated Computer Simulation Environment for Performance Based Design of Very-Low Energy and High IEQ Buildings

    Energy Technology Data Exchange (ETDEWEB)

    Chen, Yixing [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Zhang, Jianshun [Syracuse Univ., NY (United States); Pelken, Michael [Syracuse Univ., NY (United States); Gu, Lixing [Univ. of Central Florida, Orlando, FL (United States); Rice, Danial [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Meng, Zhaozhou [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Semahegn, Shewangizaw [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Feng, Wei [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Ling, Francesca [Syracuse Univ., NY (United States); Shi, Jun [Building Energy and Environmental Systems Lab. (BEESL), Syracuse, NY (United States); Henderson, Hugh [CDH Energy, Cazenovia, NY (United States)

    2013-09-01

    Executive Summary The objective of this study was to develop a “Virtual Design Studio (VDS)”: a software platform for integrated, coordinated and optimized design of green building systems with low energy consumption, high indoor environmental quality (IEQ), and high level of sustainability. This VDS is intended to assist collaborating architects, engineers and project management team members throughout from the early phases to the detailed building design stages. It can be used to plan design tasks and workflow, and evaluate the potential impacts of various green building strategies on the building performance by using the state of the art simulation tools as well as industrial/professional standards and guidelines for green building system design. Engaged in the development of VDS was a multi-disciplinary research team that included architects, engineers, and software developers. Based on the review and analysis of how existing professional practices in building systems design operate, particularly those used in the U.S., Germany and UK, a generic process for performance-based building design, construction and operation was proposed. It distinguishes the whole process into five distinct stages: Assess, Define, Design, Apply, and Monitoring (ADDAM). The current VDS is focused on the first three stages. The VDS considers building design as a multi-dimensional process, involving multiple design teams, design factors, and design stages. The intersection among these three dimensions defines a specific design task in terms of “who”, “what” and “when”. It also considers building design as a multi-objective process that aims to enhance the five aspects of performance for green building systems: site sustainability, materials and resource efficiency, water utilization efficiency, energy efficiency and impacts to the atmospheric environment, and IEQ. The current VDS development has been limited to energy efficiency and IEQ performance, with particular focus

  7. An implementation of co-simulation for performance prediction of innovative integrated HVAC systems in buildings

    Energy Technology Data Exchange (ETDEWEB)

    Trcka, Marija; Wetter, Michael; Hensen, Jan L.M.

    2010-07-01

    Integrated performance simulation of buildings and heating, ventilation and air-conditioning (HVAC) systems can help reducing energy consumption and increasing level of occupant comfort. However, no singe building performance simulation (BPS) tool offers sufficient capabilities and flexibilities to accommodate the ever-increasing complexity and rapid innovations in building and system technologies. One way to alleviate this problem is to use co-simulation. The co-simulation approach represents a particular case of simulation scenario where at least two simulators solve coupled differential-algebraic systems of equations and exchange data that couples these equations during the time integration. This paper elaborates on issues important for co-simulation realization and discusses multiple possibilities to justify the particular approach implemented in a co-simulation prototype. The prototype is verified and validated against the results obtained from the traditional simulation approach. It is further used in a case study for the proof-of-concept, to demonstrate the applicability of the method and to highlight its benefits. Stability and accuracy of different coupling strategies are analyzed to give a guideline for the required coupling frequency. The paper concludes by defining requirements and recommendations for generic cosimulation implementations.

  8. Measurement and simulation of transparent building components with sun-shading; Messung und Simulation von transparenten Bauteilen mit Sonnenschutz

    Energy Technology Data Exchange (ETDEWEB)

    Simmler, H.; Manz, H.; Haas, A. [Swiss Federal Laboratories for Materials Testing and Research (EMPA), Duebendorf (Switzerland); Favarolo, P.A. [Universita Technica delle Marche, Ancona (Italy)

    2004-12-15

    This paper takes a look at the construction and simulation of modern office buildings that often feature lightweight construction and a high proportion of glazing or even double building skins completely made of glass. In particular, those thermal comfort and cooling aspects are discussed that require that the solar attributes of facade elements are taken into account. Work done at the Swiss Federal materials institute EMPA as part of the International Energy Agency's IEA Task 27 'Performance, durability and sustainability of advanced windows and solar components for building envelopes' is discussed. The properties of glazing and shading systems are presented and discussed. Results obtained by calculation are compared with those obtained from measurements. Modules for the calculation of the properties of glazing elements and their simulation are discussed, as are transparent insulation systems.

  9. Model-Driven Robot-Software Design using integrated Models and Co-Simulation

    NARCIS (Netherlands)

    Broenink, Jan F.; Ni, Yunyun; McAllister, J.; Bhattacharyya, S.

    2012-01-01

    The work presented here is on a methodology for design of hard real-time embedded control software for robots, i.e. mechatronic products. The behavior of the total robot system (machine, control, software and I/O) is relevant, because the dynamics of the machine influences the robot software. Theref

  10. The analysis of thermal comfort requirements through the simulation of an occupied building.

    Science.gov (United States)

    Thellier, F; Cordier, A; Monchoux, F

    1994-05-01

    Building simulation usually focuses on the study of physical indoor parameters, but we must not forget the main aim of a house: to provide comfort to the occupants. This study was undertaken in order to build a complete tool to model thermal behaviour that will enable the prediction of thermal sensations of humans in a real environment. A human thermoregulation model was added to TRNSYS, a building simulation program. For our purposes, improvements had to be made to the original physiological model, by refining the calculation of all heat exchanges with the environment and adding a representation of clothes. This paper briefly describes the program, its modifications, and compares its results with experimental ones. An example of potential use is given, which points out the usefulness of such models in seeking the best solutions to reach optimal environmental conditions for global, and specially local comfort, of building occupants. PMID:8206050

  11. 3D COMPUTER SIMULATION FOR LIGNIFICATION OF ANCIENT CHINESE TIMBER BUILDINGS

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    A pioneer research work was carried out by investigators engaged in surveying and mapping for describing ancient Chinese timber buildings by 3D frame graphs w ith a computer.Users can know the structural layers and the assembly process of the se buildings if the frame graphs are processed further with a computer model.Th is can be implemented by computer simulation technique.This technique display t he raw data on the screen of a computer and interactively manage them by combini ng technologies from computer graphics and image processing,multi-media technol ogy,artificial intelligence,highly parallel real-time computation technique an d human behavior science.This paper presents the implementing procedure of ligni fi cation simulation for large-sized wooden buildings as well as 3D dynamic assembl y of these buildings under the 3DS MAX environment.The results from computer sim ulation are also shown in the paper.

  12. Use of model reduction techniques for a simulation code in building thermal behaviour modelling; Integration de la reduction de modele a un code de simulation hygro-thermo-aeraulique de batiments

    Energy Technology Data Exchange (ETDEWEB)

    Berthomieu, Th.; Boyer, H. [Universite de la Reunion (France). Laboratoire de Genie Industriel

    2004-02-01

    It is possible at present to perform complex thermal studies, integrating various thermal sources and for various buildings, using energetic software. It is always interesting to simplify the calculation process with numerical reduction techniques. In this paper a reduction technique using the decomposition of a complex system in elementary components linked each other by simple relations is presented. This reduction is performed in simulation code Codyrum, which can be used for research purpose of for design help. The results of simulation are compared with experimental results. (authors)

  13. The SCEC Broadband Platform: A Collaborative Open-Source Software Package for Strong Ground Motion Simulation and Validation

    Science.gov (United States)

    Silva, F.; Maechling, P. J.; Goulet, C. A.; Somerville, P.; Jordan, T. H.

    2014-12-01

    The Southern California Earthquake Center (SCEC) Broadband Platform is a collaborative software development project involving geoscientists, earthquake engineers, graduate students, and the SCEC Community Modeling Environment. The SCEC Broadband Platform (BBP) is open-source scientific software that can generate broadband (0-100Hz) ground motions for earthquakes, integrating complex scientific modules that implement rupture generation, low and high-frequency seismogram synthesis, non-linear site effects calculation, and visualization into a software system that supports easy on-demand computation of seismograms. The Broadband Platform operates in two primary modes: validation simulations and scenario simulations. In validation mode, the Platform runs earthquake rupture and wave propagation modeling software to calculate seismograms for a well-observed historical earthquake. Then, the BBP calculates a number of goodness of fit measurements that quantify how well the model-based broadband seismograms match the observed seismograms for a certain event. Based on these results, the Platform can be used to tune and validate different numerical modeling techniques. In scenario mode, the Broadband Platform can run simulations for hypothetical (scenario) earthquakes. In this mode, users input an earthquake description, a list of station names and locations, and a 1D velocity model for their region of interest, and the Broadband Platform software then calculates ground motions for the specified stations. Working in close collaboration with scientists and research engineers, the SCEC software development group continues to add new capabilities to the Broadband Platform and to release new versions as open-source scientific software distributions that can be compiled and run on many Linux computer systems. Our latest release includes 5 simulation methods, 7 simulation regions covering California, Japan, and Eastern North America, the ability to compare simulation results

  14. EDENetworks: a user-friendly software to build and analyse networks in biogeography, ecology and population genetics.

    Science.gov (United States)

    Kivelä, Mikko; Arnaud-Haond, Sophie; Saramäki, Jari

    2015-01-01

    The recent application of graph-based network theory analysis to biogeography, community ecology and population genetics has created a need for user-friendly software, which would allow a wider accessibility to and adaptation of these methods. EDENetworks aims to fill this void by providing an easy-to-use interface for the whole analysis pipeline of ecological and evolutionary networks starting from matrices of species distributions, genotypes, bacterial OTUs or populations characterized genetically. The user can choose between several different ecological distance metrics, such as Bray-Curtis or Sorensen distance, or population genetic metrics such as FST or Goldstein distances, to turn the raw data into a distance/dissimilarity matrix. This matrix is then transformed into a network by manual or automatic thresholding based on percolation theory or by building the minimum spanning tree. The networks can be visualized along with auxiliary data and analysed with various metrics such as degree, clustering coefficient, assortativity and betweenness centrality. The statistical significance of the results can be estimated either by resampling the original biological data or by null models based on permutations of the data. PMID:24902875

  15. Modeling Data Center Building Blocks for Energy-efficiency and Thermal Simulations

    OpenAIRE

    Vor Dem Berge, Micha; Da Costa, Georges; Jarus, Mateusz; Oleksiak, Ariel; Piatek, Wojciech; Volk, Eugen

    2013-01-01

    In this paper we present a concept and specification of Data Center Efficiency Building Blocks (DEBBs), which represent hardware components of a data center complemented by descriptions of their energy efficiency. Proposed building blocks contain hardware and thermodynamic models that can be applied to simulate a data center and to evaluate its energy efficiency. DEBBs are available in an open repository being built by the CoolEmAll project. In the paper we illustrate the concept by an exampl...

  16. Thermal-comfort analysis and simulation for various low-energy cooling-technologies applied to an office building in a subtropical climate

    Energy Technology Data Exchange (ETDEWEB)

    Chowdhury, Ashfaque Ahmed; Rasul, M.G.; Khan, M.M.K. [College of Engineering and the Built Environment, Faculty of Sciences, Engineering and Health, Central Queensland University, Rockhampton, Qld 4702 (Australia)

    2008-06-15

    Simulation of buildings' thermal-performances is necessary to predict comfort of the occupants in buildings and to identify alternate cooling control-systems for achieving better indoor thermal environments. An analysis and prediction of thermal-comfort using DesignBuilder, based on the state-of-the-art building performance simulation software EnergyPlus, is carried out in an air-conditioned multi-storeyed building in the city of Rockhampton in Central Queensland, Australia. Rockhampton is located in a hot humid-region; therefore, indoor thermal-comfort is strongly affected by the outdoor climate. This study evaluates the actual thermal conditions of the Information Technology Division (ITD) building at Central Queensland University during winter and summer seasons and identifies the thermal comfort level of the occupants using low-energy cooling technologies namely, chilled ceiling (CC), economiser usages and pre-cooling. The Fanger comfort-model, Pierce two-node model and KSU two-node model were used to predict thermal performance of the building. A sophisticated building-analysis tool was integrated with the thermal comfort models for determining appropriate cooling-technologies for the occupants to be thermally comfortable while achieving sufficient energy savings. This study compares the predicted mean-vote (PMV) index on a seven-point thermal-sensation scale, calculated using the effective temperature and relative humidity for those cooling techniques. Simulated results show that systems using a chilled ceiling offer the best thermal comfort for the occupants during summer and winter in subtropical climates. The validity of the simulation results was checked with measured values of temperature and humidity for typical days in both summer and winter. The predicted results show a reasonable agreement with the measured data. (author)

  17. Methodology and Toolset for Model Verification, Hardware/Software co-simulation, Performance Optimisation and Customisable Source-code generation

    DEFF Research Database (Denmark)

    Berger, Michael Stübert; Soler, José; Yu, Hao;

    2013-01-01

    The MODUS project aims to provide a pragmatic and viable solution that will allow SMEs to substantially improve their positioning in the embedded-systems development market. The MODUS tool will provide a model verification and Hardware/Software co-simulation tool (TRIAL) and a performance...

  18. Using CAD software to simulate PV energy yield - The case of product integrated photovoltaic operated under indoor solar irradiation

    NARCIS (Netherlands)

    Reich, N.H.; van Sark, W.G.J.H.M.; Turkenburg, W.C.; Sinke, W.C.

    2010-01-01

    In this paper, we show that photovoltaic (PV) energy yields can be simulated using standard rendering and ray-tracing features of Computer Aided Design (CAD) software. To this end, three-dimensional (3-D) sceneries are ray-traced in CAD. The PV power output is then modeled by translating irradiance

  19. An Automated BIM Model to Conceptually Design, Analyze, Simulate, and Assess Sustainable Building Projects

    Directory of Open Access Journals (Sweden)

    Farzad Jalaei

    2014-01-01

    Full Text Available Quantifying the environmental impacts and simulating the energy consumption of building’s components at the conceptual design stage are very helpful for designers needing to make decisions related to the selection of the best design alternative that would lead to a more energy efficient building. Building Information Modeling (BIM offers designers the ability to assess different design alternatives at the conceptual stage of the project so that energy and life cycle assessment (LCA strategies and systems are attained. This paper proposes an automated model that links BIM, LCA, energy analysis, and lighting simulation tools with green building certification systems. The implementation is within developing plug-ins on BIM tool capable of measuring the environmental impacts (EI and embodied energy of building components. Using this method, designers will be provided with a new way to visualize and to identify the potential gain or loss of energy for the building as a whole and for each of its associated components. Furthermore, designers will be able to detect and evaluate the sustainability of the proposed buildings based on Leadership in Energy and Environmental Design (LEED rating system. An actual building project will be used to illustrate the workability of the proposed methodology.

  20. Analysis of internal shading degree to a prototype of dynamics photovoltaic greenhouse through simulation software

    Directory of Open Access Journals (Sweden)

    Alvaro Marucci

    2015-12-01

    Full Text Available In recent years the use of photovoltaic panels as cover materials for greenhouses developed a great interest due to the state’s incentives obtainable by such applications. Shading caused by these elements inside the structure appears to be often too much for the normal development of agricultural activity. In this study it was analyzed the behaviour of shading caused by the photovoltaic panels inside a prototype of dynamic photovoltaic greenhouse whose particularity lies in the possibility of rotation of the panels along the longitudinal axis. The panels’ rotation allows varying shading degree in function of some parameters such as latitude and the different solar angles. In order to avoid any reflection losses due to imperfect inclination of the photovoltaic panels, 24 highly reflective aluminium mirrors were prepared with the objective of recovering the portion of solar radiation otherwise lost by reflection. For the study it was used the simulation software Autodesk® Ecotect® Analysis which allows to analyse the path of the shadows during the day and throughout the year for any latitude considered. For this study it was analyzed shading with the panels in a horizontal position. It was also analyzed the evolution of the percentage of shading simulating different latitudes. The results obtained show a great variation of the shading degree inside the structure during a single day and during the year. We can conclude that integrating this analysis with the energy balance it is possible to study the behaviour of photovoltaic greenhouses in order to integrate the energy production from renewable energy sources and agricultural production.

  1. Simulation on spread of fire smoke in the elevator shaft for a high-rise building

    OpenAIRE

    Yunchun Xia

    2014-01-01

    Spread of fire smoke in the elevator shaft of a high-rise building is influenced by many driving facts. We simulate smoke spreading in the elevator shaft, stair room, and pre-chamber with and without different supplied pressurized air. The simulation shows that smoke moves very fast in the elevator shaft. When a 12 floor high-rise building is in fire, smoke can fill up the elevator shaft in less than 1.5 min after a fire started, temperature in the elevator shaft can be higher than 187°C in 5...

  2. Suitability of commercial software for direct numerical simulations of chaotic electrokinetic transport

    Science.gov (United States)

    Karatay, Elif; Mani, Ali

    2014-11-01

    Many microfluidic and electrochemical applications involve chaotic transport phenomena that arise due to instabilities stemming from coupling of hydrodynamics with ion transport and electrostatic forces. Recent investigations have revealed contribution of a wide range of spatio-temporal scales in such chaotic systems similar to those observed in turbulent flows. Given that these scales can span several orders of magnitude, significant numerical resolution is needed for accurate prediction of these phenomena. The objective of this work is to assess efficiency of commercial software for prediction of such phenomena. To this end we have considered Comsol Multiphysics as a general-purpose commercial CFD/transport solver, and have compared its performance against a custom-made DNS code tailored to the specific physics of chaotic electrokinetic phenomena. We present comparison for small systems, which can be simulated on a single core, and show detailed statistics including velocity and concentration spectra over a wide range of frequencies. Our results indicate that while accuracy can be guaranteed with proper mesh resolution, commercial solvers are generally at least an order of magnitude slower than custom-made DNS codes. Supported by NWO, Rubicon Grant.

  3. FullSWOF: A free software package for the simulation of shallow water flows

    CERN Document Server

    Delestre, Olivier; James, Francois; Lucas, Carine; Laguerre, Christian; Cordier, Stephane

    2014-01-01

    Numerical simulations of flows are required for numerous applications, and are usually carried out using shallow water equations. We describe the FullSWOF software which is based on up-to-date finite volume methods and well-balanced schemes to solve this kind of equations. It consists of a set of open source C++ codes, freely available to the community, easy to use, and open for further development. Several features make FullSWOF particularly suitable for applications in hydrology: small water heights and wet-dry transitions are robustly handled, rainfall and infiltration are incorporated, and data from grid-based digital topographies can be used directly. A detailed mathematical description is given here, and the capabilities of FullSWOF are illustrated based on analytic solutions and datasets of real cases. The codes, available in 1D and 2D versions, have been validated on a large set of benchmark cases, which are available together with the download information and documentation at http://www.univ-orleans....

  4. Building of Nuclear Ship Engineering Simulation System development of the simulator for the integral type reactor

    International Nuclear Information System (INIS)

    JAERI had carried out the design study of a light-weight and compact integral type reactor of power 100 MWth with passive safety as a power source for the future nuclear ships, and completed an engineering design. To confirm the design and operation performance and to utilize the study of automation of the operations of reactor, we developed a real-time simulator for the integral type reactor. This simulator is a part of Nuclear Ship Engineering Simulation System (NESSY) and on the same hardware as 'Mutsu' simulator which was developed to simulate the first Japanese nuclear ship Mutsu'. Simulation accuracy of 'Mutsu' simulator was verified by comparing the simulation results With data got in the experimental voyage of 'Mutsu'. The simulator for the integral type reactor uses the same programs which were used in 'Mutsu' simulator for the separate type PWR, and the simulated results are approximately consistent with the calculated values using RELAP5/MOD2 (The later points are reported separately). Therefore simulation accuracy of the simulator for the integral type reactor is also expected to be reasonable, though it is necessary to verify by comparing with the real plant data or experimental data in future. We can get the perspectives to use as a real-time engineering simulator and to achieve the above-mentioned aims. This is a report on development of the simulator for the integral type reactor mainly focused on the contents of the analytical programs expressed the structural features of reactor. (author)

  5. Numerical simulation of seismic response of a base isolated building with low shear modulus rubber isolators

    International Nuclear Information System (INIS)

    This paper describes seismic-response simulations of a base-isolated building subjected to actual earthquakes using the 3-D computer program, SISEC, developed at Argonne National Laboratory. The isolation system consists of six medium shape factor, high damping, and low shear modulus rubber bearings. To ensure the accuracy of analytical simulation, recorded data of full-size reinforced concrete structures located in Sendai, Japan are used as the benchmarks for comparisons of numerical simulations with observations. Results obtained from both analytical simulations and earthquake observations indicate that the advantage of base isolation in mitigating the acceleration of superstructure is very pronounced. For the two representative earthquakes, one had the strongest ground motion and the other one had similar magnitudes as the rest of the earthquakes recorded at the test site, the simulated accelerations at the roof level of the isolated building are about 20% to 30% of the ordinary building accelerations. Also, results reveal that for both ordinary and base-isolated buildings the computed accelerations agree reasonably well with those recorded

  6. Agent-based simulation of building evacuation using a grid graph-based model

    Science.gov (United States)

    Tan, L.; Lin, H.; Hu, M.; Che, W.

    2014-02-01

    Shifting from macroscope models to microscope models, the agent-based approach has been widely used to model crowd evacuation as more attentions are paid on individualized behaviour. Since indoor evacuation behaviour is closely related to spatial features of the building, effective representation of indoor space is essential for the simulation of building evacuation. The traditional cell-based representation has limitations in reflecting spatial structure and is not suitable for topology analysis. Aiming at incorporating powerful topology analysis functions of GIS to facilitate agent-based simulation of building evacuation, we used a grid graph-based model in this study to represent the indoor space. Such model allows us to establish an evacuation network at a micro level. Potential escape routes from each node thus could be analysed through GIS functions of network analysis considering both the spatial structure and route capacity. This would better support agent-based modelling of evacuees' behaviour including route choice and local movements. As a case study, we conducted a simulation of emergency evacuation from the second floor of an official building using Agent Analyst as the simulation platform. The results demonstrate the feasibility of the proposed method, as well as the potential of GIS in visualizing and analysing simulation results.

  7. Agent-based simulation of building evacuation using a grid graph-based model

    International Nuclear Information System (INIS)

    Shifting from macroscope models to microscope models, the agent-based approach has been widely used to model crowd evacuation as more attentions are paid on individualized behaviour. Since indoor evacuation behaviour is closely related to spatial features of the building, effective representation of indoor space is essential for the simulation of building evacuation. The traditional cell-based representation has limitations in reflecting spatial structure and is not suitable for topology analysis. Aiming at incorporating powerful topology analysis functions of GIS to facilitate agent-based simulation of building evacuation, we used a grid graph-based model in this study to represent the indoor space. Such model allows us to establish an evacuation network at a micro level. Potential escape routes from each node thus could be analysed through GIS functions of network analysis considering both the spatial structure and route capacity. This would better support agent-based modelling of evacuees' behaviour including route choice and local movements. As a case study, we conducted a simulation of emergency evacuation from the second floor of an official building using Agent Analyst as the simulation platform. The results demonstrate the feasibility of the proposed method, as well as the potential of GIS in visualizing and analysing simulation results

  8. 构建云计算平台的开源软件综述%Survey of Open Source Software for Building Cloud Computing Platforms

    Institute of Scientific and Technical Information of China (English)

    林利; 石文昌

    2012-01-01

    The emergence of open source software for cloud computing facilitates the building of cloud computing platforms, but meanwhile it challenges the choosing of appropriate ones from these pool of software. To figure out how to build a cloud computing platform, research on existing open source software for building cloud computing platforms is necessary. This paper investigated the development of these kinds of open source software and analyzed their architectures from the perspective of service models. Through comparison and analysis of representatives of them, effective ways were proposed for developers to choose appropriate pieces of software to build a specific cloud computing platform.%云计算开源软件的涌现为云计算平台的构建提供了便利,同时也为人们从中选择合适的软件带来了挑战.为明确如何构建云计算平台,研究现有用于构建云计算平台的开源软件十分必要.考察构建云计算平台的开源软件的发展状况,从提供服务的角度对各种服务模型的开源软件体系结构进行剖析,通过对比分析当前典型的用于构建云计算平台的开源软件,来为云计算平台建设者利用此类软件构建符合特定需求的云计算环境提供有效的途径.

  9. The GlycanBuilder: a fast, intuitive and flexible software tool for building and displaying glycan structures

    Directory of Open Access Journals (Sweden)

    Dell Anne

    2007-08-01

    Full Text Available Abstract Background Carbohydrates play a critical role in human diseases and their potential utility as biomarkers for pathological conditions is a major driver for characterization of the glycome. However, the additional complexity of glycans compared to proteins and nucleic acids has slowed the advancement of glycomics in comparison to genomics and proteomics. The branched nature of carbohydrates, the great diversity of their constituents and the numerous alternative symbolic notations, make the input and display of glycans not as straightforward as for example the amino-acid sequence of a protein. Every glycoinformatic tool providing a user interface would benefit from a fast, intuitive, appealing mechanism for input and output of glycan structures in a computer readable format. Results A software tool for building and displaying glycan structures using a chosen symbolic notation is described here. The "GlycanBuilder" uses an automatic rendering algorithm to draw the saccharide symbols and to place them on the drawing board. The information about the symbolic notation is derived from a configurable graphical model as a set of rules governing the aspect and placement of residues and linkages. The algorithm is able to represent a structure using only few traversals of the tree and is inherently fast. The tool uses an XML format for import and export of encoded structures. Conclusion The rendering algorithm described here is able to produce high-quality representations of glycan structures in a chosen symbolic notation. The automated rendering process enables the "GlycanBuilder" to be used both as a user-independent component for displaying glycans and as an easy-to-use drawing tool. The "GlycanBuilder" can be integrated in web pages as a Java applet for the visual editing of glycans. The same component is available as a web service to render an encoded structure into a graphical format. Finally, the "GlycanBuilder" can be integrated into other

  10. Claire, a tool used for the simulation of events in software tests; Claire, un outil de simulation evenementielle pour le test des logiciels

    Energy Technology Data Exchange (ETDEWEB)

    Henry, J.Y.; Boulc`h, J. [CEA Centre d`Etudes de Fontenay-aux-Roses, 92 (France). Dept. d`Evaluation de Surete; Raguideau, J.; Schoen, D. [CEA Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (France). Dept. d`Electronique et d`Instrumentation Nucleaire

    1994-06-01

    CLAIRE provides a purely software system which makes it possible to validate the on line applications dealt out to the specifications domain or the code. This tool offers easy graphic design of the application and of its environment. It caries out quite efficiently the simulation of any logged in model and runs the control of the evolution either dynamically or with prerecorded time. (TEC).

  11. Simulation-based education for building clinical teams

    Directory of Open Access Journals (Sweden)

    Marshall Stuart

    2010-01-01

    Full Text Available Failure to work as an effective team is commonly cited as a cause of adverse events and errors in emergency medicine. Until recently, individual knowledge and skills in managing emergencies were taught, without reference to the additional skills required to work as part of a team. Team training courses are now becoming commonplace, however their strategies and modes of delivery are varied. Just as different delivery methods of traditional education can result in different levels of retention and transfer to the real world, the same is true in team training of the material in different ways in traditional forms of education may lead to different levels of retention and transfer to the real world, the same is true in team training. As team training becomes more widespread, the effectiveness of different modes of delivery including the role of simulation-based education needs to be clearly understood. This review examines the basis of team working in emergency medicine, and the components of an effective emergency medical team. Lessons from other domains with more experience in team training are discussed, as well as the variations from these settings that can be observed in medical contexts. Methods and strategies for team training are listed, and experiences in other health care settings as well as emergency medicine are assessed. Finally, best practice guidelines for the development of team training programs in emergency medicine are presented.

  12. The use of Tecnomatix software to simulate the manufacturing flows in an industrial enterprise producing hydrostatic components

    Science.gov (United States)

    Petrila, S.; Brabie, G.; Chirita, B.

    2016-08-01

    The analysis performed on manufacturing flows within industrial enterprises producing hydrostatic components twos made on a number of factors that influence smooth running of production such: distance between pieces, waiting time from one surgery to another; time achievement of setups on CNC machines; tool changing in case of a large number of operators and manufacturing complexity of large files [2]. To optimize the manufacturing flow it was used the software Tecnomatix. This software represents a complete portfolio of manufacturing solutions digital manufactured by Siemens. It provides innovation by linking all production methods of a product from process design, process simulation, validation and ending the manufacturing process. Among its many capabilities to create a wide range of simulations, the program offers various demonstrations regarding the behavior manufacturing cycles. This program allows the simulation and optimization of production systems and processes in several areas such as: car suppliers, production of industrial equipment; electronics manufacturing, design and production of aerospace and defense parts.

  13. The development of WIPPVENT, a windows based interactive mine ventilation simulation software program at the Waste Isolation Pilot Plant

    Energy Technology Data Exchange (ETDEWEB)

    McDaniel, K.H. [Westinghouse Electric Corp., Carlsbad, NM (United States). Waste Isolation Div.; Wallace, K.G. Jr. [Mine Ventilation Services, Inc. (United States)

    1995-11-01

    An interactive mine ventilation simulation software program (WIPPVENT) was developed at the Waste Isolation Pilot Plant (WIPP). The WIPP is a US Department of Energy (DOE) research and development project located near Carlsbad, New Mexico. The facility is designed to provide a permanent, safe underground disposal of US defense generated transuranic waste in bedded salt. In addition to it`s regular functions, the underground ventilation system is engineered to prevent the uncontrolled spread of radioactive materials in the unlikely event of a release. To enhance the operability system, Westinghouse Electric Corporation has developed an interactive mine ventilation simulation software program (WIPPVENT). While WIPPVENT includes most of the functions of the commercially available simulation program VNETPC ({copyright} 1991 Mine Ventilation Services, Inc.), the user interface has been completely rewritten as a Windows{reg_sign} application and screen graphics have been added. WIPPVENT is designed to interact with the WIPP ventilation monitoring systems through the site wide Central Monitoring System.

  14. The off-line programming and simulation software for the Mitsubishi Movemaster RV-M1 robot

    Directory of Open Access Journals (Sweden)

    J. Świder

    2007-01-01

    Full Text Available Purpose: Contemporary robotics requires modern instruments for programming, control and supervising ofrobots’ work. It becomes necessary to strict adjust the robot in its working environment after tests on a virtualmodel of the robot and its surroundings. The aim of present work is a presentation of preliminary version ofthe system for off-line programming, simulation and remote supervision of the Mitsubishi Movemaster RV-M1robot.Design/methodology/approach: The robot installed in institute’s laboratory has been used in research work.Attention has been focused on creating of universal software, which could be developed in the future.Findings: In result of carried work a first version of the software has been developed. It has network orientedmodular structure.Research limitations/implications: The code of the software has been developed in high level programmingin such manner, that allows further translation and transfer to the other system platform. Far-reaching plansinclude creation of universal form of the software, which could be applied to majority of system platforms andcan operate with different types of robots.Practical implications: Created software has presently didactic character and it is used during conduction oflaboratory classes.Originality/value: Conducted works have in view a creation of universal and modular software. Existingcommercial solutions are usually dedicated to a concrete type of robot.

  15. Nuclear combined heat and power - analyses of hot water pipeline breaks in a service tunnel with Apros simulation software

    International Nuclear Information System (INIS)

    This paper presents a computer model and simulation results for a long-distance heat transport system. The system can be used e.g. to transport heat from a nuclear power plant with combined heat and power (CHP) production. CHP production is considered for new build NPP projects in Finland. Emphasis is on the environmental conditions during a hot water pipeline break in a service tunnel. The modelled pipeline system is designed to transport 1000 MW of heat over a distance of 77 km for district heating purposes. The hot water pipeline is assumed to be 1200 mm diameter with a water temperature of 120 deg. C. Cooled water returns with a temperature of 55 - 60 deg. C in a similar 1200 mm diameter pipe. Both pipelines are installed to a service tunnel which is excavated into bedrock and divided into 2 kilometres long compartments. Both the 77 km long pipeline and the tunnel are modelled with Apros simulation software. A leak is modelled from the pipeline to the tunnel and the results are analyzed. This paper includes three different leak sizes (1 %, 10 % and 100 % of the pipeline's cross-sectional area). The leaks are calculated with water temperatures of 95 deg. C and 120 deg. C in the pipeline. Apros calculates dynamically the phenomena inside the pipeline with two-phase 6-equation calculation model. The tunnel conditions are calculated with a lumped parameter model. The size of the leak has a substantial effect on the leak's consequences in the tunnel. Also the water temperature in the pipeline influences the results strongly. If the water temperature is over 100 deg. C, a considerable amount of the water boils as it leaks to the tunnel. The boiling of water makes the conditions in the tunnel much more severe than they would otherwise be. If there is a substantial flow out of the tunnel, the air in the tunnel can be replaced by hot steam. Obviously, this can mean hazardous conditions in the tunnel. (authors)

  16. Geomorphological surveys and software simulations for rock fall hazard assessment: a case study in the Italian Alps

    Directory of Open Access Journals (Sweden)

    S. Devoto

    2014-12-01

    Full Text Available In northern Italy, fast-moving landslides represent a significant threat to the population and human facilities. In the eastern portion of the Italian Alps, rock falls are recurrent and are often responsible for casualties or severe damage to roads and buildings. The above-cited type of landslide is frequent in mountain ranges, is characterised by strong relief energy and is triggered by earthquakes or copious rainfall, which often exceed 2000 mm yr−1. These factors cause morphological dynamics with intense slope erosion and degradation processes. This work investigates the appraisal of the rock-fall hazard related to the presence of several large unstable blocks located at the top of a limestone peak, approximately 500 m NW with respect to the Village of Cimolais. Field surveys recognised a limestone block exceeding a volume of 400 m3 and identified this block as the most hazardous for Cimolais Village because of its proximity to the rocky cliff. A first assessment of the possible transit and stop areas has been investigated through in-depth traditional activities, such as geomorphological mapping and aerial photo analysis. The output of field surveys was a detailed land use map, which provided a fundamental starting point for rock fall software analysis. The geomorphological observations were correlated with DTMs derived by regional topography and Airborne Laser Scanning (ALS surveys to recognise possible rock fall routes. To simulate properly rock fall trajectories with a hybrid computer program, particular attention was devoted to the correct quantification of rates of input parameters, such as restitution coefficients and horizontal acceleration associated to earthquakes, which historically occur in this portion of Italy. The simulation outputs regarding the distribution of rock fall end points and kinetic energy along rock falling paths highlight the hazardous situation for Cimolais Village. Because of this reason, mitigation works have

  17. TEMAS: fleet-based bio-economic simulation software to evaluate management strategies accounting for fleet behaviour

    DEFF Research Database (Denmark)

    Ulrich, Clara; Andersen, Bo Sølgaard; Sparre, Per Johan;

    2007-01-01

    TEMAS (technical management measures) is a fleet-based bio-economic software for evaluating management strategies accounting for technical measures and fleet behaviour. It focuses on mixed fisheries in which several fleets can choose among several fishing activities to target different stocks...... in one or several areas. The software combines a management strategy evaluation framework, using a forward-running operating model and a management procedure with a fleet behaviour module simulating both short-term (effort allocation) and long-term (entry/exit) fleet dynamics. The suite of models behind...

  18. Comparison of CFD simulation of night purge ventilation to full-scale building measurements

    Science.gov (United States)

    Chigurupati, Asha; Gorle, Catherine; Iaccarino, Gianluca

    2014-11-01

    Efforts to improve the understanding of air motion in and around buildings can lead to more efficient natural ventilation systems, thereby significantly reducing a building's heating and cooling demands. CFD simulations enable solving the details of the flow and convective heat transfer in buildings and have the potential to predict the performance of natural ventilation with a high degree of accuracy. Understanding the actual predictive capability of CFD simulations is however complicated by the complexity of the geometry and physics involved, and the uncertainty and variability in the boundary conditions. In the present study we model the night flush process in the Y2E2 building on Stanford University's campus and compare the results to measurements in the full-scale, operational building. We model half of the building, which consists of three floors with office spaces and two atriums. We solve the RANS equations using ANSYS/Fluent and k-e RNG theory turbulence closure model for the duration of one night flush and will present a comparison of the CFD results to measurements of the temperature on each floor in both atriums. Future investigations will focus on the potential of reducing the discrepancy between observed and predicted values by varying uncertain model parameters and boundary conditions.

  19. Stochastic Modeling of Overtime Occupancy and Its Application in Building Energy Simulation and Calibration

    Energy Technology Data Exchange (ETDEWEB)

    Sun, Kaiyu; Yan, Da; Hong, Tianzhen; Guo, Siyue

    2014-02-28

    Overtime is a common phenomenon around the world. Overtime drives both internal heat gains from occupants, lighting and plug-loads, and HVAC operation during overtime periods. Overtime leads to longer occupancy hours and extended operation of building services systems beyond normal working hours, thus overtime impacts total building energy use. Current literature lacks methods to model overtime occupancy because overtime is stochastic in nature and varies by individual occupants and by time. To address this gap in the literature, this study aims to develop a new stochastic model based on the statistical analysis of measured overtime occupancy data from an office building. A binomial distribution is used to represent the total number of occupants working overtime, while an exponential distribution is used to represent the duration of overtime periods. The overtime model is used to generate overtime occupancy schedules as an input to the energy model of a second office building. The measured and simulated cooling energy use during the overtime period is compared in order to validate the overtime model. A hybrid approach to energy model calibration is proposed and tested, which combines ASHRAE Guideline 14 for the calibration of the energy model during normal working hours, and a proposed KS test for the calibration of the energy model during overtime. The developed stochastic overtime model and the hybrid calibration approach can be used in building energy simulations to improve the accuracy of results, and better understand the characteristics of overtime in office buildings.

  20. MaMiCo: Software design for parallel molecular-continuum flow simulations

    KAUST Repository

    Neumann, Philipp

    2015-11-19

    The macro-micro-coupling tool (MaMiCo) was developed to ease the development of and modularize molecular-continuum simulations, retaining sequential and parallel performance. We demonstrate the functionality and performance of MaMiCo by coupling the spatially adaptive Lattice Boltzmann framework waLBerla with four molecular dynamics (MD) codes: the light-weight Lennard-Jones-based implementation SimpleMD, the node-level optimized software ls1 mardyn, and the community codes ESPResSo and LAMMPS. We detail interface implementations to connect each solver with MaMiCo. The coupling for each waLBerla-MD setup is validated in three-dimensional channel flow simulations which are solved by means of a state-based coupling method. We provide sequential and strong scaling measurements for the four molecular-continuum simulations. The overhead of MaMiCo is found to come at 10%-20% of the total (MD) runtime. The measurements further show that scalability of the hybrid simulations is reached on up to 500 Intel SandyBridge, and more than 1000 AMD Bulldozer compute cores. Program summary: Program title: MaMiCo. Catalogue identifier: AEYW_v1_0. Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEYW_v1_0.html Program obtainable from: CPC Program Library, Queen\\'s University, Belfast, N. Ireland. Licensing provisions: BSD License. No. of lines in distributed program, including test data, etc.: 67905. No. of bytes in distributed program, including test data, etc.: 1757334. Distribution format: tar.gz. Programming language: C, C++II. Computer: Standard PCs, compute clusters. Operating system: Unix/Linux. RAM: Test cases consume ca. 30-50 MB. Classification: 7.7. External routines: Scons (http:www.scons.org), ESPResSo, LAMMPS, ls1 mardyn, waLBerla. Nature of problem: Coupled molecular-continuum simulation for multi-resolution fluid dynamics: parts of the domain are resolved by molecular dynamics whereas large parts are covered by a CFD solver, e.g. a lattice Boltzmann automaton