نتایج جستجو برای: ramp junction

تعداد نتایج: 56999  

2010
Uwe Gross Tim Renner

Production ramp-up appears to be the main challenge during the late phases of innovation processes: new product specifications have to walk along with new production processes and even new production facilities. Bringing new products to market at a required level of quality while meeting targeted time and cost, is the main goal of production ramp-up management. Literature stresses the importanc...

Journal: :Journal of chemical theory and computation 2015
Laura K McKemmish Andrew T B Gilbert

Electron densities at nuclei are difficult to calculate accurately with all-Gaussian basis sets because they lack an electron-nuclear cusp. The newly developed mixed ramp-Gaussian basis sets, such as R-31G, possess electron-nuclear cusps due to the presence of ramp functions in the basis. The R-31G basis set is a general-purpose mixed ramp-Gaussian basis set modeled on the 6-31G basis set. The ...

Journal: :IEICE Electronic Express 2012
Kaita Imai Keita Yasutomi Keiichiro Kagawa Shoji Kawahito

This paper proposes a distributed ramp signal generator of column-parallel single-slope ADCs for CMOS image sensors. This architecture does not require any power-hungry amplifiers of the conventional one but consists of miniaturized column-wise ramp signal generators connected together by metal wires, which achieves high linearity and high uniformity. Simulation results show less than 1LSB nonl...

2011
Xuesong Zhu Kaiyu Liu

This study attempts to develop a Geographic Information System (GIS) based system utilized in identifying ramp site that can potentially benefit from ramp signaling. To achieve this, this paper first identifies and evaluates existing ramp signaling guidelines, and then establishes a set of warrants with consideration for their appropriateness and the availability of the required data. A web GIS...

2006
Roberto Horowitz Xiaotian Sun Laura Muñoz Alex Skabardonis Pravin Varaiya Michael Zhang Jingtao Ma

Part I: Modeling, Estimation, and RampMetering Control of Freeway Traffic Themain objective of Part I is to develop improved algorithms for freeway on-ramp metering control. Toward this end, two macroscopic traffic models are first introduced and analyzed. The first is a modification of the cell transmission model (CTM) developed by Daganzo. This modified CTM uses cell vehicle densities as its ...

Journal: :Faraday discussions 2014
Sebastian W Schmidt Michael F Pill Alfred Kersch Hauke Clausen-Schaumann Martin K Beyer

AFM-based dynamic single-molecule force spectroscopy was used to stretch carboxymethylated amylose (CMA) polymers, which have been covalently tethered between a silanized glass substrate and a silanized AFM tip via acid-catalyzed ester condensation at pH 2.0. Rupture forces were measured as a function of temperature and force loading rate in the force-ramp mode. The data exhibit significant sta...

Journal: :Perception 2012
Kirk N Olsen Catherine J Stevens

Overestimation of loudness change typically occurs in response to up-ramp auditory stimuli (increasing intensity) relative to down-ramps (decreasing intensity) matched on frequency, duration, and end-level. In the experiment reported, forward masking is used to investigate a sensory component of up-ramp overestimation: persistence of excitation after stimulus presentation. White-noise and synth...

2003
R. E. Ergun L. Andersson C. W. Carlson D. L. Newman M. V. Goldman

Direct observations of magnetic-field-aligned (parallel) electric fields in the downward current region of the aurora provide decisive evidence of naturally occurring double layers. We report measurements of parallel electric fields, electron fluxes and ion fluxes related to double layers that are responsible for particle acceleration. The observations suggest that parallel electric fields orga...

2013
Rui Jiang Jinwoo Lee Edward Chung

Ramp signalling is an access control for motorways, in which a traffic signal is placed at onramps to regulate the rate of vehicles entering the motorway and thus to preserve the motorway capacity. In general, ramp signalling algorithms fall into two categories: local control and coordinated control by their effective scope. Coordinated ramp signalling strategies make use of measurements from t...

Journal: :Journal of the American College of Cardiology 1991
J Myers N Buchanan D Walsh M Kraemer P McAuley M Hamilton-Wessler V F Froelicher

To compare the hemodynamic and gas exchange responses of ramp treadmill and cycle ergometer tests with standard exercise protocols used clinically, 10 patients with chronic heart failure, 10 with coronary artery disease who were asymptomatic during exercise, 11 with coronary artery disease who were limited by angina during exercise and 10 age-matched normal subjects performed maximal exercise u...

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