This paper presents a novel approach for experimentally simulating various environmental conditions and container parameters on air conditioning and refrigeration (AC&R) systems. The proposed emulation technique uses a hardware-in-the-loop (HIL) system to simulate the loading conditions on the evaporator during experimental testing. The evaporator air inlet conditions are controlled with a smal...

More and more applications and protocols are now running on wireless networks. Testing the implementation of such applications and protocols is a real challenge as the position of the mobile terminals and environmental effects strongly affect the overall performance. Network emulation is often perceived as a good trade-off between experiments on operational wireless networks and discrete-event ...

One problem common to all virtualization techniques is the efficient injection of emulation code into the guest operating systems (guest OSs). Emulation is needed to limit the effects of virtualization sensitive instructions to the appropriate virtual machine. For instance, privilege mode changes, processor halting or resetting, and device accesses must be redirected to the executing virtual ma...

Digital libraries are increasingly relying on distributed services to support increasingly complex tasks such as retrieval or preservation.While there is a growing body of services for migrating digital objects into safer formats to ensure their long-term accessability, the quality of these services is often unknown. Moreover, emulation as the major alternative preservation strategy is often ne...

1 This work has been partially funded by FCT (Portugal), POCTI/ESE41788/2001. Abstract. This paper describes a new tool for Built in Self Test (BIST) design automation and fault emulation (FE). Combinational and/or sequential digital modules may be designed with embedded self-test attributes. Linear Feedback Shift Registers (LFSRs) and Multiple Input Shift Registers (MISRs) are automatically ge...

The paper presents an emulation modelling approach to reduce the computational burden associated with the use of process-based, distributed, dynamic models in planning and management of water resources. This approach, which relies on a procedure composed by few steps, leads to the identification of an emulation model, namely a simplified, computationally-efficient model built over a sample data...

Emulation based ATE is an appropriate technique to use when testing complex / microprocessor based boards containing one or more microprocessors, microprocessor-emulation-based ATE is an appropriate technique to be considered for testing. By using microprocessor emulation, the unit under test can be stimulated and controlled from its microprocessor buses. This technique often can complement oth...

The increasing need of protocol development environments and network performance evaluation tools gives rise to the research of flexible, scalable, and accurate network emulators. The desired network emulator should be able to facilitate the emulation of either wireline or wireless networks. In the case when network topology is critical to the underlying network protocol, the emulator should pr...

This paper addresses the problem of electronic emulation of both linear and nonlinear mechanical loads using a vector-controlled induction machine dynamometer. It is shown that a basic emulation scheme where the dynamometer torque demand is derived from the inverse dynamics of the emulated load is not generally viable, especially if the emulated load is part of a closed-loop speed control syste...

Worms are a serious threat to Internet security. The past research on worm has been focused on mathematical modeling, numerical analysis, and simulation in addition to proposed defense strategies. We believe a fine-grained, packet-level emulation of worm propagation in enterprise networks is highly beneficial for the deep understanding of worm dynamics and a prerequisite for worm containment an...