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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Discrete event dynamic systems 3 (1993), S. 151-171 
    ISSN: 1573-7594
    Keywords: multimodeling ; process abstraction ; combined simulation ; phase transitions ; simulation environment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Large-scale systems are typically quite difficult to model. Hierarchical decomposition has proven to be one successful method in managing model complexity, by refining model components into models of the same type as the lumped model. Many systems, however, cannot be modeled using this approach since each abstraction level is best defined using a different modeling technique. We present amultimodel approach which overcomes this limitation, and we illustrate the technique using a fairly simple scenario: boiling water. State and phase trajectories are presented along with an implementation using theSimPack simulation toolkit. Multimodeling has provided us with a mechanism for building models that are capable of producing answers over a wide range of fidelity.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    IIE transactions 30 (1998), S. 811-820 
    ISSN: 1573-9724
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Although many diverse areas employ simulation models, no agreed-upon taxonomy has been developed to categorize and structure simulation models for all science and engineering disciplines. The discipline of simulation is often splintered due to this lack of structure, with ad hoc model classes such as ‘discrete event,’ ‘continuous’ and ‘combined.’ These classes most often reflect the method of execution used on a model rather than the design structure of the model. We present a uniform model design taxonomy whose categories are inspired from categories in programming language principles within the field of computer science. The taxonomy includes a set of primitive model types (conceptual, declarative, functional, constraint, spatial) and a way of integrating primitive model types together (multimodeling). These model types are discussed using a single application: a robot server for an assembly line. We have found this taxonomy enables simulators to more easily define and categorize their models as well as to understand how model types from seemingly disparate application areas are interrelated.
    Type of Medium: Electronic Resource
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  • 3
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    Unknown
    Gainesville, FL
    In:  http://aquaticcommons.org/id/eprint/1071 | 3 | 2011-09-29 21:11:25 | 1071 | Florida Cooperative Fish and Wildlife Research Unit
    Publication Date: 2021-07-05
    Description: We present a new modeling method for use in large-scale physical systems, such as the Everglades ecosystem.The current work that has been done in the ATLSS (Across-Trophic-Level System Simulation) project-whichfocuses on simulating key Everglades system components-relies on code integration. While this represents anecessary first step in analyzing the dynamics of species within the Everglades, it falls short of true modelintegration. We have constructed a methodology called object-oriented physical modeling (OOPM), which allowsa comprehensive knowledge representation to be constructedfor large-scale systems. OOPM enforces theidea that an implementation ofcomputer code can be accomplished in an incremental fashion by starting with aconceptual model and progressing to more detailed models. During this evolutionary procedure, a minimal amountof code is written, since the emphasis is on developing the conceptual model so that it not only represents theintuitive aspects ofthe model, but is also executable. OOPM provides a kind of "blueprint" for ecologists, biologistsand hydrologists to communicate and integrate models effectively. (14 page document)
    Keywords: Conservation ; Management ; Engineering ; Limnology ; Everglades ; Florida ; ecosystem ; modeling ; ATLSS (Across-Trophic-Level System Simulation) ; restoration
    Repository Name: AquaDocs
    Type: article
    Format: application/pdf
    Format: application/pdf
    Format: 76-89
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  • 4
    Publication Date: 2021-04-01
    Description: Consumer virtual reality (VR) technologies have made embodying a virtual avatar during an immersive experience more feasible. The sense of embodiment toward that virtual avatar can be characterized and measured along three factors: self-location, agency, and body ownership. Some measures of embodiment have been previously proposed, but most have not been validated or do not measure the three individual factors of embodiment. In this paper, we present the construction and validation of a preliminary version of a short questionnaire that not only addresses these factors of embodiment but can also be used as an in-VR questionnaire, which we call the pESQ. By using and validating the pESQ, we provide results indicating that foot tracking significantly improves self-location and agency, and that an avatar significantly improves body ownership.
    Electronic ISSN: 2673-4192
    Topics: Computer Science
    Published by Frontiers Media
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