Search Results - "Ewanchuk, J."

A Method for Supply Voltage Boosting in an Open-Ended Induction Machine Using a Dual Inverter System With a Floating Capacitor Bridge by Ewanchuk, J., Salmon, J., Chapelsky, C.

“…An operational approach to an induction machine is presented that uses an open winding connected to a dual inverter system. A floating capacitor inverter…”
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Moving beyond linear food chains: trait-mediated indirect interactions in a rocky intertidal food web by Trussell, Geoffrey C., Matassa, Catherine M., Ewanchuk, Patrick J.

“…In simple, linear food chains, top predators can have positive indirect effects on basal resources by causing changes in the traits (e.g. behaviour, feeding…”
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Habitat effects on the relative importance of trait- and density-mediated indirect interactions by Trussell, Geoffrey C, Ewanchuk, Patrick J, Matassa, Catherine M

“…Classical views of trophic cascades emphasize the primacy of consumptive predator effects on prey populations to the transmission of indirect effects…”
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PWM Inverters Using Split-Wound Coupled Inductors by Salmon, J., Ewanchuk, J., Knight, A.M.

“…The number of output-voltage levels available in pulsewidth-modulated (PWM) voltage-source inverters can be increased by inserting a split-wound coupled…”
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Anthropogenic Modification of New England Salt Marsh Landscapes by Bertness, Mark D., Ewanchuk, Patrick J., Silliman, Brian Reed

“…Salt marshes play a critical role in the ecology and geology of wave-protected shorelines in the Western Atlantic, but as many as 80% of the marshes that once…”
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Trait-Mediated Effects in Rocky Intertidal Food Chains: Predator Risk Cues Alter Prey Feeding Rates by Trussell, Geoffrey C., Ewanchuk, Patrick J., Bertness, Mark D.

“…The influence of predation on rocky intertidal community structure has long emphasized the importance of indirect interactions. Most efforts in this area have…”
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Single-Phase Multilevel PWM Inverter Topologies Using Coupled Inductors by Salmon, J., Knight, A.M., Ewanchuk, J.

“…The number of voltage levels available in pulsewidth modulation (PWM) voltage source inverters can be increased by using a split-wound coupled inductor within…”
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Analysis of the degradation mechanisms occurring in the topside interconnections of IGBT power devices during power cycling by Dornic, N., Ibrahim, A., Khatir, Z., Tran, S.H., Ousten, J.-P., Ewanchuk, J., Mollov, S.

“…This paper presents an experimental technique to characterize the damage evolution of the topside interconnections of power semi-conductor devices during power…”
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fear of being eaten reduces energy transfer in a simple food chain by Trussell, Geoffrey C., Ewanchuk, Patrick J., Matassa, Catherine M.

“…Food chain length is an important property of ecosystems, but the mechanisms maintaining it remain elusive. Classical views suggest that energetic…”
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Competition and Salt-Marsh Plant Zonation: Stress Tolerators May Be Dominant Competitors by Emery, Nancy C., Ewanchuk, Patrick J., Bertness, Mark D.

“…Although a great deal of research has focused on the effects of nutrient supply on plant competition, few studies have explored how these processes interact…”
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Performance of a High-Speed Motor Drive System Using a Novel Multilevel Inverter Topology by Ewanchuk, J., Salmon, J., Knight, A.M.

“…The performance of a novel multilevel six-switch (SS) three-phase inverter drive is examined for low-voltage high-speed motor applications. The switching…”
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RESOURCE IDENTITY MODIFIES THE INFLUENCE OF PREDATION RISK ON ECOSYSTEM FUNCTION by Trussell, Geoffrey C, Ewanchuk, Patrick J, Matassa, Catherine M

“…It is well established that predators can scare as well as consume their prey. In many systems, the fear of being eaten causes trait-mediated cascades whose…”
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Integration of a First Order Eddy Current Approximation With 2D FEA for Prediction of PWM Harmonic Losses in Electrical Machines by Knight, A. M., Salmon, J. C., Ewanchuk, J.

“…Two-dimensional (2D) finite element models of electrical machines are known to over predict iron losses when modeling systems excited using pulse width…”
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Structure and organization of a northern New England salt marsh plant community by Ewanchuk, Patrick J., Bertness, Mark D.

“…1. Northern New England marshes are characterized by mid-elevation areas of sparse vegetation, but high species diversity, which are not found in the…”
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Field evidence of trait-mediated indirect interactions in a rocky intertidal food web by Trussell, Geoffrey C., Ewanchuk, Patrick J., Bertness, Mark D.

“…Studies on the implications of food web interactions to community structure have often focused on density‐mediated interactions between predators and their…”
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Clonal Integration and the Expansion of Phragmites australis by Amsberry, Lindsay, Baker, Michael A., Ewanchuk, Patrick J., Bertness, Mark D.

“…The recent expansion of the reed Phragmites australis in western Atlantic salt marshes has become a conservation concern. Historically, Phragmites was…”
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Do Alternate Stable Community States Exist in the Gulf of Maine Rocky Intertidal Zone? by Bertness, Mark D., Trussell, Geoffrey C., Ewanchuk, Patrick J., Silliman, Brian R.

“…It has recently been hypothesized that intertidal mussel beds and seaweed canopies in the Gulf of Maine are alternate community stable states or disturbance…”
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Coupled Three-Phase Inductors for Interleaved Inverter Switching by Knight, A.M., Ewanchuk, J., Salmon, J.C.

“…This paper presents the use of coupled inductors to allow interleaved switching of the upper and lower switches of three-phase inverters. The approach…”
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Online junction temperature measurements for power cycling power modules with high switching frequencies by Brandelero, J., Ewanchuk, J., Mollov, S.

“…Traditionally, power cycling employs only electromechanical induced stress due to the heating caused by the conduction losses of a power device. Hence,…”
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Non-linear interactions between consumers and flow determine the probability of plant community dominance on Maine rocky shores by Silliman, Brian R, McCoy, Michael W, Trussell, Geoffrey C, Crain, Caitlin M, Ewanchuk, Patrick J, Bertness, Mark D

“…Although consumers can strongly influence community recovery from disturbance, few studies have explored the effects of consumer identity and density and how…”
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