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Modifications to a Turbulent Inflow Generation Method for Boundary-Layer Flows

James W. Jewkes, Yongmann M. Chung, Peter W. Carpenter
2011 AIAA Journal  
From the rescaled inlet velocity field: u(y, z, t) mirror,in = u(y, W − z, t) in , (1) v(y, z, t) mirror,in = v(y, W − z, t) in , (2) w(y, z, t) mirror,in = −w(y, W − z, t) in , (3) where u, v and w are  ...  W is the domain width, and t is the time. The new mirrored values for u, v and w were applied at the inlet instead of the originally calculated velocity field.  ... 
doi:10.2514/1.j050318 fatcat:kqckx3wlizeazdvmgqdug6ndri

Smart Sensor Systems

Gary W. Hunter, Joseph R. Stetter, Peter Hesketh, Chung-Chiun Liu
2010 The Electrochemical Society Interface  
CHung-CHiun Liu  ...  Smart Sensor Systems by Gary W. Hunter, Joseph R. Stetter, Peter J.  ...  Hesketh, Chung-Chiun Liu control and conditioning stages that will provide both excitation and signal data logging and conditioning.  ... 
doi:10.1149/2.f03104if fatcat:d7ao4j66cvholdb2gl4lxhuywi

Diagnostically and Experimentally Useful Panel of Strains from the Burkholderia cepacia Complex

Eshwar Mahenthiralingam, Tom Coenye, Jacqueline W. Chung, David P. Speert, John R. W. Govan, Peter Taylor, Peter Vandamme
2000 Journal of Clinical Microbiology  
Two new species, Burkholderia multivorans andBurkholderia vietnamiensis, and three genomovars (genomovars I, III, and IV) currently constitute the Burkholderia cepacia complex. A panel of 30 well-characterized strains representative of each genomovar and new species was assembled to assist with identification, epidemiological analysis, and virulence studies on this important group of opportunistic pathogens.
doi:10.1128/jcm.38.2.910-913.2000 fatcat:6a6pzw6w6rdknhyql3tsuxqxwy

Machine Learning of Energetic Material Properties [article]

Brian C. Barnes, Daniel C. Elton, Zois Boukouvalas, DeCarlos E. Taylor, William D. Mattson, Mark D. Fuge, Peter W. Chung
2018 arXiv   pre-print
In this work, we discuss use of machine learning techniques for rapid prediction of detonation properties including explosive energy, detonation velocity, and detonation pressure. Further, analysis is applied to individual molecules in order to explore the contribution of bonding motifs to these properties. Feature descriptors evaluated include Morgan fingerprints, E-state vectors, a custom "sum over bonds" descriptor, and coulomb matrices. Algorithms discussed include kernel ridge regression,
more » ... east absolute shrinkage and selection operator ("LASSO") regression, Gaussian process regression, and the multi-layer perceptron (a neural network). Effects of regularization, kernel selection, network parameters, and dimensionality reduction are discussed. We determine that even when using a small training set, non-linear regression methods may create models within a useful error tolerance for screening of materials.
arXiv:1807.06156v1 fatcat:tgwlzybldvbsba2aezrggbrax4

A Model of Occupational Licensing and Statistical Discrimination

Peter Q. Blair, Bobby W. Chung
2021 AEA Papers and Proceedings  
example, the empirical finding in the literature that occupational licenses that preclude felons close the racial wage gap among men by conferring a higher premium to Black men than to White men (Blair and Chung  ...  Given two distinct groups of workers B and W such that the average cost of licensing is greater for group B than for group W (i.e., c o,B > c 0,W ), unlicensed B workers earn less than unlicensed W workers  ...  By contrast, licensed B workers earn more than licensed W workers, ceteris paribus.  ... 
doi:10.1257/pandp.20211112 fatcat:ttqeoel2drhcxoeqykqxlga6n4

Superlattice Growth via MBE and Green's Function Techniques

J. J. Ramsey, Ernian Pan, Peter W. Chung, Zhiming M. Wang
2010 Nanoscale Research Letters  
W. Chung, J. J. Ramsey), and the ASEE/SMART Fellowship program (J. J. Ramsey).  ... 
doi:10.1007/s11671-010-9636-8 pmid:20676205 pmcid:PMC2897040 fatcat:5ju3mogqvbfqdk2w7ykg7e5y6e

Impact of Korean Ginseng (Panax Ginseng) on Power Generation of Microbial Fuel Cells

Wonjae Kim, Peter Lee, Thomas W. Kim, George Kim, Jonathan Sukhee Chung, Jihwan Alex. Joo, Sung-Jae Chung
2015 Journal of Chemistry and Chemical Engineering  
The anode and cathode were connected externally by 430 Ω (0.25 W) resistor and internally through the PEM.  ...  To the anode chamber, 2% (w/v) of cellobiose (C7252, Sigma-Aldrich) was added that served as the substrate and hence the electron donor.  ... 
doi:10.17265/1934-7375/2015.07.003 fatcat:75fi4nptarhininecf3t42vdji

A State-Space Estimation of the Lee-Carter Mortality Model and Implications for Annuity Pricing [article]

Man Chung Fung, Gareth W. Peters, Pavel V. Shevchenko
2015 arXiv   pre-print
Hence, we also highlight that this model can be rewritten in the form of an ARIMA structure via a Local Level formulation where we denote η t := α + βκ t and h t := θ + w t .  ...  form where each age x is an ARIMA(0,1,1) structure as Z xt := ∇Y xt = ∇η xt + ∇ǫ xt with a simple closed form expression for the auto-correlation function given by ρ Zx (k) = γ(k) γ(0) = − σ 2 ǫ σ 2 w  ... 
arXiv:1508.00322v1 fatcat:4xc52mk2fbb2to7neaca7ehhyq

The Fate of Trichohyalin

Edit Tarcsa, Lyuben N. Marekov, Jeanne Andreoli, William W. Idler, Eleonora Candi, Soo-Il Chung, Peter M. Steinert
1997 Journal of Biological Chemistry  
Tonja Kartasova, Seung-Chul Lee, and Peter McPhie for stimulating discussions and Kozo Yoneda for assistance with the immunofluorescence experiments.  ...  The reaction was stopped by heat (20 min, 70°C), and the protein was digested with Asp-N (1:200 w/w for 18 h at 37°C).  ...  The reaction was terminated by heating (70°C, 20 min), and the samples as well as uncross-linked controls were digested with Asp-N (1:200 w/w, 18 h, 37°C).  ... 
doi:10.1074/jbc.272.44.27893 pmid:9346937 fatcat:4fdv3zeeqvgf3o3wmznaosvay4

Independent Vector Analysis for Data Fusion Prior to Molecular Property Prediction with Machine Learning [article]

Zois Boukouvalas, Daniel C. Elton, Peter W. Chung, Mark D. Fuge
2018 arXiv   pre-print
IVA-L is performed onX Train resulting in a set of demixing matrices, {W 1 , . . . , W K }, where each W k ∈ R P ×P .  ...  array W ∈ R P ×P ×K .  ... 
arXiv:1811.00628v1 fatcat:avw6mrjqyvbfletoi4n7djnxwe

A unified approach to mortality modelling using state-space framework: characterisation, identification, estimation and forecasting [article]

Man Chung Fung, Gareth W. Peters, Pavel V. Shevchenko
2016 arXiv   pre-print
We investigate this issue in a separate paper (Peters et al. (2016) ).  ...  (i) t =w (i) t−1 · π ψ (κ t |γ (i) t , κ t−1 ); (71) 5: Normalise: w (i) t =w (i) N j=1w (j) t ; (72) 6: Evaluate N ef f = N i=1 (w (i) t ) 2 −1 ; (73) 7: If N ef f < 0.8N, resample γ (i) 1:t from  ... 
arXiv:1605.09484v1 fatcat:ixgpyhcsnvhdfeeo767rnbl4ee

Dislocation Dynamics Simulations of Junctions in Hexagonal Close-Packed Crystals

Chi-Chin Wu, Sylvie Aubry, Peter W. Chung, Athanasios Arsenlis
2012 Materials Research Society Symposium Proceedings  
Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information
more » ... perations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. 15. SUBJECT TERMS 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT Same as Report (SAR) 18. NUMBER OF PAGES 8 19a. NAME OF RESPONSIBLE PERSON a. REPORT unclassified b. ABSTRACT unclassified c. THIS PAGE unclassified Standard Form 298 (Rev. 8-98) ABSTRACT The formation and strength of dislocations in the hexagonal closed packed material beryllium are studied through dislocation junctions and the critical stress required to break them. Dislocation dynamics calculations (using the code ParaDiS) of junction maps are compared to an analytical line tension approximation in order to validate our model. Results show that the two models agree very well. Also the critical shear stress necessary to break 30 o -30 o and 30 o -90 o dislocation junctions is computed numerically. Yield surfaces are mapped out for these junctions to describe their stability regions as function of resolved shear stresses on the glide planes. The example of two non-coplanar binary dislocation junctions with slip planes [2-1-10] (01-10) and [-12-10] (0001) corresponding to a prismatic and basal slip respectively is chosen to verify and validate our implementation.
doi:10.1557/opl.2012.234 fatcat:mya7guxyfbeutksytyupqngujy

Effects of chronic hyperglycaemia on incident stroke in Hong Kong Chinese patients with type 2 diabetes

Xilin Yang, Alice P. S. Kong, Wing Yee So, Ronald C. W. Ma, Chung Shun Ho, Christopher W. K. Lam, Chun Chung Chow, Clive S. Cockram, Peter C. Y. Tong, Juliana C. N. Chan
2007 Diabetes/Metabolism Research Reviews  
W. Ma^ Chung Shun Ho^ Christopher W. K. Lam^ Chun Chung Chow^ Clive S. Cockram^ Peter C. Y. Tong^ Juliana C. N.  ...  Declaration Drs Juliana Chan, Alice PS Kong, WY So and Peter CY Tong are investigators of MSD-sponsored clinical trials.  ... 
doi:10.1002/dmrr.675 pmid:16871645 fatcat:nbywf36wezdztgrxyyu4as3c4a

Interlayer correlation of embedded quantum-dot arrays through their surface strain energy distributions

Ernie Pan, Yu Zou, Peter W. Chung, Yan Zhang
2009 Physical Review B  
We propose an interlayer correlation of multilayer quantum-dot ͑QD͒ distributions from a rigorous strain energy calculation. This leads to a map of correlations, or interlayer alignment, based solely on lateral and vertical spacing ͑xdist / b versus hdist / h͒. We identify four distinct correlation regimes-aligned correlation, antialigned correlation, noncorrelation, and the transition zone between the aligned and antialigned correlation. Our prediction matches well with available experimental
more » ... ata for a broad range of semiconductors with low elastic anisotropy ͓A =2C 44 / ͑C 11 −C 12 ͒ Ͻ 2͔ and can further predict the QD array distribution for those with high elastic anisotropy ͑A Ն 2͒ by a simple shift in hdist / h. The agreement spans both IV-VI and III-V systems. Moreover, the aligned correlation regime produces a large decay in strain energy magnitudes in subsequently grown layers, which may contribute to their observed larger nucleation domains.
doi:10.1103/physrevb.80.073302 fatcat:fbcz2vpbuff4nhf43s7hkng7ae

Ultrahigh vacuum apparatus for x-ray powder diffraction in surface science

K. F. Peters, Y.-W. Chung, J. B. Cohen
1998 Review of Scientific Instruments  
Instrum., Vol. 69, No. 12, December 1998 Peters, Chung, and Cohen  ...  The sample reaches the 600 K melting temperature of bulk Pb with only 7 W heater power, i.e., 1 Amp at 7 V.  ... 
doi:10.1063/1.1149233 fatcat:sc7k6aimr5f2jj6fbywbn7fgbm
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