The Experts below are selected from a list of 13098 Experts worldwide ranked by ideXlab platform
Carsten Rode - One of the best experts on this subject based on the ideXlab platform.
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the international building physics toolbox in simulink
Energy and Buildings, 2007Co-Authors: Angela Sasic Kalagasidis, Toke Rammer Nielsen, Ruut Hannele Peuhkuri, Peter Weitzmann, Carl-eric Hagentoft, Carsten RodeAbstract:The International Building Physics Toolbox (IBPT) is a software library developed originally for heat, air and moisture system analysis in building physics. The toolbox is constructed as a modular structure of standard building elements, using the Graphical Programming Language Simulink. To enable development of the toolbox, a common modelling platform is defined: a set of unique communication signals, material database and documentation protocol. The IBPT is an open source and available on the Internet. Any user can utilize, expand and develop the contents of the toolbox. This paper presents structure and essence of the library. Potential applications of the toolbox are illustrated through examples. (C) 2006 Elsevier B.V. All rights reserved.
Josep M Guerrero - One of the best experts on this subject based on the ideXlab platform.
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power system real time emulation a practical virtual instrumentation to complete electric power system modeling
IEEE Transactions on Industrial Informatics, 2019Co-Authors: A Parizad, Sobhan Mohamadian, Mohamad Esmaeil Iranian, Josep M GuerreroAbstract:Hardware-in-the-loop (HIL) simulation is a technique that is being used increasingly in the development and test of complex systems. Real-world testing of an intricate system in a field-like power plant can be challenging, time-consuming, expensive, and hazardous. HIL emulators allow engineers to test devices thoroughly and efficiently in a virtual environment with high reliability and minimum risk of defect. In this paper, the complete electric power system (including generator, turbine-governor, excitation system, transmission lines, transformer, external grid and related loads) is implemented in a MATLAB/Simulink environment. Different virtual instrument pages are modeled in the Graphical Programming Language of LabVIEW which enable fast and reliable measurement functions such as data acquisition, archiving, real-time Graphical display and processing. The interaction between MATLAB and LabVIEW is accomplished by generating a Pharlap ETS Targets *.dll file which enables the two software to exchange real-time data. Also, a real 1518-kW excitation system is considered as a test case for the introduced HIL system. This equipment is connected to LabVIEW software through a National Instrument PXI technology. Different scenarios (electrical frequency/active power change, voltage step response, etc.) are simulated in the designed power system emulator (PSE). The validity of the implemented model for the excitation system is verified by finding good matching between MATLAB and HIL simulation results.
Angela Sasic Kalagasidis - One of the best experts on this subject based on the ideXlab platform.
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the international building physics toolbox in simulink
Energy and Buildings, 2007Co-Authors: Angela Sasic Kalagasidis, Toke Rammer Nielsen, Ruut Hannele Peuhkuri, Peter Weitzmann, Carl-eric Hagentoft, Carsten RodeAbstract:The International Building Physics Toolbox (IBPT) is a software library developed originally for heat, air and moisture system analysis in building physics. The toolbox is constructed as a modular structure of standard building elements, using the Graphical Programming Language Simulink. To enable development of the toolbox, a common modelling platform is defined: a set of unique communication signals, material database and documentation protocol. The IBPT is an open source and available on the Internet. Any user can utilize, expand and develop the contents of the toolbox. This paper presents structure and essence of the library. Potential applications of the toolbox are illustrated through examples. (C) 2006 Elsevier B.V. All rights reserved.
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ham tools an integrated simulation tool for heat air and moisture transfer analyses in building physics
2004Co-Authors: Angela Sasic KalagasidisAbstract:HAM-Tools is a building simulation software. HAM stands for H eat, A ir and M oisture transport processes in a building and building envelope that can be simulated by this program, and Tools describes its modular structure. The main objective of this tool is to obtain simulations of transfer processes related to building physics, i.e. heat and mass transport in buildings and building components in operating conditions. The tool is to be used as a research and educational tool for the investigation of the mechanism of the above mentioned processes and of the degree of their correlation when they are coupled. Using the Graphical Programming Language Simulink®, the code is developed as a library of predefined calculation procedures (tools) where each supports the calculation of the HAM transfer processes in a building part or an interacting system. Tools are grouped according to their functionality into five sub-systems: Constructions (building envelope parts), Zones (air volume of the room), Systems (HVAC systems), Helpers (weather data) and Gains (casual gains). When all sub-systems are coupled together and solved simultaneously, the resulted simulation represents the highest level of integration in the HAM-Tools. The modular structure in Simulink, using systems and subsystems and the Graphical approach, facilitate handling and control of a very complex interaction between different parts of the model. This thesis encloses a presentation of HAM-Tools structure, mathematical and numerical models that it is based on, selected examples of the application of the code and results of validation tests. As a part of the International Building Physics Toolbox, HAM-Tools is an open research tool and publicly available for a free downloading. Any researcher can use, expand and develop the contents of the library.
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presentation of the international building physics toolbox for simulink
Presentation of the International Building Physics Toolbox for Simulink, 2003Co-Authors: Peter Weitzmann, Toke Rammer Nielsen, Angela Sasic Kalagasidis, Ruut Hannele Peuhkuri, Carl-eric HagentoftAbstract:The international building physics toolbox (IBPT) is a software library specially constructed for HAM system analysis in building physics. The toolbox is constructed as a modular structure of the standard building elements using the Graphical Programming Language Simulink. Two research groups have participated in this project. In order to enable the development of the toolbox, a common modelling platform was defined: a set of unique communication signals, material database and documentation protocol. The IBPT is open source and publicly available on the Internet. Any researcher and student can use, expand, and develop the contents of the toolbox. This paper presents the structure and the backbone of the library. Three examples are given to visualize the possibilities of the toolbox.
Anna Ivanova - One of the best experts on this subject based on the ideXlab platform.
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comprehension of computer code relies primarily on domain general executive brain regions
eLife, 2020Co-Authors: Anna Ivanova, Shashank Srikant, Yotaro Sueoka, Hope Kean, Riva Dhamala, Unamay Oreilly, Marina Umaschi BersAbstract:Computer Programming is a novel cognitive tool that has transformed modern society. What cognitive and neural mechanisms support this skill? Here, we used functional magnetic resonance imaging to investigate two candidate brain systems: the multiple demand (MD) system, typically recruited during math, logic, problem solving, and executive tasks, and the Language system, typically recruited during linguistic processing. We examined MD and Language system responses to code written in Python, a text-based Programming Language (Experiment 1) and in ScratchJr, a Graphical Programming Language (Experiment 2); for both, we contrasted responses to code problems with responses to content-matched sentence problems. We found that the MD system exhibited strong bilateral responses to code in both experiments, whereas the Language system responded strongly to sentence problems, but weakly or not at all to code problems. Thus, the MD system supports the use of novel cognitive tools even when the input is structurally similar to natural Language.
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comprehension of computer code relies primarily on domain general executive brain regions
bioRxiv, 2020Co-Authors: Anna Ivanova, Shashank Srikant, Yotaro Sueoka, Hope Kean, Riva Dhamala, Unamay Oreilly, Marina Umaschi BersAbstract:Computer Programming is a novel cognitive tool that has transformed modern society. An integral part of Programming is code comprehension: the ability to process individual program tokens, combine them into statements, which, in turn, combine to form a program. What cognitive and neural mechanisms support this ability to process computer code? Here, we used fMRI to investigate the role of two candidate brain systems in code comprehension: the multiple demand (MD) system, typically recruited for math, logic, problem solving, and executive function, and the Language system, typically recruited for linguistic processing. Across two experiments, we examined brain responses to code written in two programing Languages: Python, a text-based Programming Language (Experiment 1) and ScratchJr, a Graphical Programming Language for children (Experiment 2). To isolate neural activity evoked by code comprehension per se rather than by processing program content, we contrasted responses to code problems with responses to content-matched sentence problems. We found that the MD system exhibited strong bilateral responses to code in both experiments. In contrast, the Language system responded strongly to sentence problems, but only weakly or not at all to code problems. We conclude that code comprehension relies primarily on domain-general executive resources, demonstrating that the MD system supports the use of novel cognitive tools even when the input is structurally similar to natural Language.
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comprehension of computer code relies primarily on domain general executive resources
bioRxiv, 2020Co-Authors: Anna Ivanova, Marina Umaschi Bers, Shashank Srikant, Yotaro Sueoka, Hope Kean, Riva Dhamala, Unamay Oreilly, Evelina FedorenkoAbstract:Computer Programming is a novel cognitive tool that has transformed modern society. An integral part of Programming is code comprehension: the ability to process individual program tokens, combine them into statements, which, in turn, combine to form a program. What cognitive and neural mechanisms support this ability to process computer code? Here, we used fMRI to investigate the role of two candidate brain systems in code comprehension: the multiple demand (MD) system, typically recruited for math, logic, problem solving, and executive function, and the Language system, typically recruited for linguistic processing. Across two experiments, we examined brain responses to code written in two programing Languages: Python, a text-based Programming Language (Experiment 1) and ScratchJr, a Graphical Programming Language for children (Experiment 2). To isolate neural activity evoked by code comprehension per se rather than by processing program content, we contrasted responses to code problems with responses to content-matched sentence problems. We found that the MD system exhibited strong bilateral responses to code in both experiments. In contrast, the Language system responded strongly to sentence problems, but only weakly or not at all to code problems. We conclude that code comprehension relies primarily on domain-general executive resources, demonstrating that the MD system supports the use of novel cognitive tools even when the input is structurally similar to natural Language.
A Parizad - One of the best experts on this subject based on the ideXlab platform.
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power system real time emulation a practical virtual instrumentation to complete electric power system modeling
IEEE Transactions on Industrial Informatics, 2019Co-Authors: A Parizad, Sobhan Mohamadian, Mohamad Esmaeil Iranian, Josep M GuerreroAbstract:Hardware-in-the-loop (HIL) simulation is a technique that is being used increasingly in the development and test of complex systems. Real-world testing of an intricate system in a field-like power plant can be challenging, time-consuming, expensive, and hazardous. HIL emulators allow engineers to test devices thoroughly and efficiently in a virtual environment with high reliability and minimum risk of defect. In this paper, the complete electric power system (including generator, turbine-governor, excitation system, transmission lines, transformer, external grid and related loads) is implemented in a MATLAB/Simulink environment. Different virtual instrument pages are modeled in the Graphical Programming Language of LabVIEW which enable fast and reliable measurement functions such as data acquisition, archiving, real-time Graphical display and processing. The interaction between MATLAB and LabVIEW is accomplished by generating a Pharlap ETS Targets *.dll file which enables the two software to exchange real-time data. Also, a real 1518-kW excitation system is considered as a test case for the introduced HIL system. This equipment is connected to LabVIEW software through a National Instrument PXI technology. Different scenarios (electrical frequency/active power change, voltage step response, etc.) are simulated in the designed power system emulator (PSE). The validity of the implemented model for the excitation system is verified by finding good matching between MATLAB and HIL simulation results.
