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Incorporating reflection for real-time multi-configuration haptic-interactive virtual environments
Real-time mirror reflection is employed in many virtual reality applications to achieve visuo-haptic collocation. Its use, however, necessitates adjustments to the original model as well any used input devices to compensate for changes due to image ...
An accurate, nonlinear model and control of hybrid actuation system (WIP)
Hybrid actuation system (HAS) with dissimilar redundancy conforms to the development trend of future actuation system in more electric aircraft. In this paper, a typical architecture of HAS is described and the block diagram model of HAS is established ...
Nonlinear modeling and analysis of electromechanical actuator
For more electric aircraft (MEA), in order to reduce air craft operating maintenance costs, electro-mechanical actuators technology is a good substitution for flight controls actuation. This paper develops a nonlinear dynamic model for EMA with roller-...
Large scale network simulation based on hi-fi approach
Simulation of Large Scale Networks (LSN) has a broad application area. However, so far fine grain simulation of LSN faced with the problem of a high dimension mathematical model and, consequently, the results were not precise. The scalable Network ...
Transient analysis of railway tracks for low frequency vibrations: the bridge end problem (work in progress version)
The phenomenon of rail bending wave deflection that occurs when a train passes through the junction of two railway tracks of completely different structures is outlined in the paper. The bending wave is created by the axle load that moves along the ...
Toward model-driven engineering principles and practices to support model replicability
- Joseph Ledet,
- Alejandro Teran-Somohano,
- Zachary Butcher,
- Levent Yilmaz,
- Alice E. Smith,
- Halit Oğuztüzün,
- Orçun Dayıbaş,
- Bilge Kaan Görür
Recent years have seen a proliferation of the use of simulation models in computational science. Most of these models have never been independently replicated by anyone but the original developer. Furthermore, there is a growing credibility gap due to ...
Modular multi-domain co-simulation for rail vehicle testing with ETCS scenario control (WIP)
The Institute for Rail Vehicles and Materials Handling Technology of RWTH Aachen University has built a railway test vehicle which can perform automatic movements with sophisticated motion and localization sensors. To expand test capabilities for ...
Agile simulation based analysis for acquisition
This paper presents a model-based systems engineering approach for quantitative acquisition decisions based on cost/benefit tradeoffs. The foundation of the approach involves the mapping of three basic systems engineering metrics, namely, Measures of ...
New insights on river crossing operation using rafts by modeling and simulation (WIP)
Units in river crossing operation can be easily exposed to fire attack of enemy so that they are vulnerable to the defeat in detail since they are split over the river. Thus, rapid completion of the operation is essential to preserve combat power and ...
Towards a hybrid agent-based model for mosquito borne disease
Agent-based models (ABM) are used to simulate the spread of infectious disease through a population. Detailed human movement, demography, realistic business location networks, and in-host disease progression are available in existing ABMs, such as the ...
Disaggregation and refinement of system dynamics models via agent-based modeling
System dynamics models are usually used to investigate aggregate level behavior, but these models can be decomposed into agents that have more detailed individual behaviors. Here we develop a simple model of the STEM workforce to illuminate the impacts ...
Dynamic structural analysis for DAEs
Efficient simulation of higher-index variable-structure DAE requires index-reduction during simulation. Hence, the performance of the implemented index-reduction method is crucial. When the same algorithm has to be calculated for slightly different ...
Simulation of tomographic medical image data for training of generic segmentation models utilizing multivariate feature classification
Whenever generic segmentation strategies utilizing multivariate feature classification are developed in the medical domain, testing and training solely on real world data is insufficient to validate all possible feature aspects. Instead, utilization of ...
Multi-objective optimization and analysis of the inventory management model
This paper presents a simulation-based optimization integration of system dynamics and multi-objective optimization that investigates the stock management problem through the inventory management model developed by Sterman (2000). Three optimization ...
Solving the problem of efficient gas delivery with aid of decision support system: BPsim.DSS based on simulation modeling
The paper describes deployment experience of a decision support system for planning fuel supplies within a network of gas stations, which is based on simulation, multi-agent and expert modeling. Authors focus on various methods used in decision support ...
Mechanistic agent-based damage and repair models as hypotheses for patterns of necrosis caused by drug induced liver injury
Increasing model reuse and facilitating repurposing is expected to expand simulation use for better understanding biological phenomena. We demonstrate doing so in the context of liver diseases caused by toxic exposure to xenobiotics. A clinical goal is ...
An approach to parallelizing the simulation of complicated modelica models
Designing embedded systems has become a complex and expensive task, and simulation and other analysis tools are taking on a bigger role in the overall design process. In an effort to speed up the design process, we present an algorithm for reducing the ...
A symbolic simulator for hybrid equations
In this paper, the symbolic simulation of hybrid dynamical systems is studied and an algorithm to compute symbolic solutions for such systems is presented. The tasks to perform such simulations are introduced and an algorithm to symbolically calculate a ...
Interactive depth first algorithm for oil transportation emergency response planning
In the event of an oil spill, an essential element of responding effectively to any adverse consequences is proper planning to define tasks, personnel, and resources necessary. The plan should include coordination with appropriate local, municipal, ...
AMEDS-tool: an automatic tool to model and simulate large scale systems
Simulating the cost of applications running on large clusters of processors poses difficulties in model definition and simulation. In this paper we propose a methodology to ease this burden. The user specifies a model describing it as a timed coloured ...
Cardiac arrhythmia visualization in a virtual heart for electrophysiology education
The 3D cardiac arrhythmia visualization model in this paper was developed to assist medical students and fellows in understanding the underlying electrophysiology of cardiac arrhythmias and their treatments. In this detailed cardiac model, the user can ...
Authoring of OpenFlow networks with visual network description (SDN version) (WIP)
The OpenFlow protocol is an example of a Software Defined Networking protocol proposed as a software mechanism for controlling the network equipments. Nevertheless, the management of OpenFlow experiments can be a difficult task considering the ...
Simulation model for energy assessment in ISP and web search engine collaboration
This paper proposes a simulation model to address the problem of evaluating the benefits of collaboration between an Internet Service Provider (ISP) comprising a P2P network supporting a cache mechanism and a Web Search Engine (WSE). Through this model, ...
Using sectioning to construct confidence intervals for quantiles when applying antithetic variates
We use sectioning to construct a confidence interval (CI) for a quantile when applying antithetic variates, which is a well-known variance-reduction technique. Closely related to batching, sectioning starts with the batching CI and replaces the batching ...
A predictive analytics toolbox for medical applications
Ever more frequently business enterprises are benefiting from the collection and analysis of large data. This paper reports on a work in progress of adapting intelligence, predictive analytics tools for analysis of medical data. While large data has ...
Using cadaver simulation to improve communication and economy of movement as evidence of progress with the trans-catheter aortic valve implantation (TAVI) learning curve
Trans-catheter Aortic Valve Implantation (TAVI) is an endovascular treatment for critical aortic stenosis. An early "learning curve" is important drawback of TAVI that can dramatically alter patient safety and hospital costs. There is paucity of data ...
Service-oriented model composition
This paper aims to deal with the automatic model composition issue by jointly using service-oriented technology and agent technology. Most existing composition methods focused on model reusability remain static and unable to self-adapt to dynamic ...
A novel augmented reality simulator for minimally invasive spine surgery
Cement augmentation techniques cover minimally invasive surgical interventions used to treat painful vertebral compression fractures. These fractures are mainly caused by decreased bone strength as a result of osteoporosis. The current training options ...
Wireless real-time processing and visualization of EMG data
Existing wireless electromyography (EMG) solutions utilize proprietary hard- and software components for transmitting and analyzing sensor data. In this paper, we present a setup for transmission and visualization of EMG data on a tablet PC. The system ...
The computer assisted surgical trainer: design, models, and implementation
- J. W. Rozenblit,
- C. Feng,
- M. Riojas,
- L. Napalkova,
- A. J. Hamilton,
- M. Hong,
- P. Berthet-Rayne,
- P. Czapiewski,
- G. Hwang,
- J. Nikodem,
- A. Shankaran,
- A. Rao
This paper describes a system developed to assist in model-based training of minimally invasive, laparoscopic procedures. The key factor motivating the development of the device called CAST (Computer-Assisted Surgical Trainer) is the need to improve the ...