Results 141 to 150 of about 1,509,844 (367)

An Examination of Aerosol Jet‐Printed Surface Roughness and its Impact on the Performance of High‐Frequency Electronics

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley   +1 more source

Combining Metal Additive Manufacturing and Casting Technology: High Performance Cooling Channels for Electric Powertrain Components

open access: yesAdvanced Engineering Materials, EarlyView.
When realized as inserts in high‐pressure die casting, aluminum cooling channels for electric powertrain components and similar applications typically require a stabilizing filler to survive the process. The present study investigates relinquishing this filler using additively manufactured inserts promising performance improvements.
Dirk Lehmhus   +9 more
wiley   +1 more source

Extrametricality and second language acquisition

open access: yesProceedings of the Annual Meetings on Phonology, 2016
This paper examines how native English speakers acquire stress in Portuguese. Native speakers and second language learners (L2ers) of any given language have to formulate word-level prosodic generalizations based on a subset of lexical items to which they have been exposed.
openaire   +4 more sources

Fossilization in second language acquisition: some experimental data from the second language classroom [PDF]

open access: yes, 2017
Higgs and Clifford (1982) claim that grammatical accuracy must be stressed before communicative modes of language instruction can be undertaken. Implicit in this article is that grammar must be taught deductively and that students taught second languages
Hammond, Robert M.
core   +1 more source

An Application of Answer Set Programming to the Field of Second Language Acquisition

open access: yes, 2013
This paper explores the contributions of Answer Set Programming (ASP) to the study of an established theory from the field of Second Language Acquisition: Input Processing. The theory describes default strategies that learners of a second language use in
Inclezan, Daniela
core   +1 more source

Sol–Gel Synthesis of Ca2.5Ag0.3Sm0.2Co4O9 Semiconducting Materials for Thermoelectric Applications in Aerospace Systems

open access: yesAdvanced Engineering Materials, EarlyView.
Ca2.5Ag0.3Sm0.2Co4O9 semiconductor materials are synthesized and produced in this study using the sol–gel and cold pressing techniques for thermoelectric generator applications. As template samples are added, the Seebeck coefficient and power factor values rise, peaking at 800 °C for Ca2.5Ag0.3Sm0.2Co4O9 at 274.47 μV K−1 and 0.58 mW mK−2, respectively.
Enes Kilinc   +4 more
wiley   +1 more source

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