The Institute for Cyber-Enabled Research (iCER) at Michigan State University (MSU) was established in 2009 to coordinate and support multidisciplinary resources for computation and computational sciences. iCER is the home of MSU's centralized High Performance Computing resources, which include a heterogeneous compute cluster with various hardware designed to meet the needs of different scientists. The goal of iCER is not to maximize Flops, but instead to maximize the amount of quality science being accomplished. This paper outlines many of the initiatives that iCER has taken to support researchers at MSU and throughout Michigan; describes the structure and evolution of iCER and its relationship with XSEDE and offers insights for other institutions interested in putting together a similar computational organization.

JF - In proceedings of 2013 XSEDE Conference CY - San Diego, California ER - TY - JOUR T1 - Large-Eddy Simulations of Turbulent Flows in Internal Combustion Engines, International Journal of Heat and Mass Transfer Y1 - 2013 A1 - Banaeizadeh, A. A1 - Afshari, A. A1 - H. Schock A1 - Jaberi, F. VL - Vol. 60 IS - No. 10 ER - TY - JOUR T1 - The nature of the H₂-emitting gas in the Crab nebula JF - \mnras Y1 - 2013 A1 - Richardson, C. T. A1 - Baldwin, J. A. A1 - Ferland, G. J. A1 - Loh, E. D. A1 - Kuehn, C. A. A1 - Fabian, A. C. A1 - Salomé, P. KW - ISM: molecules KW - ISM: supernova remnants KW - supernovae: individual: Crab nebula VL - 430 ER - TY - JOUR T1 - Neutrino-pair emission from hot nuclei during stellar collapse JF - PHYSICAL REVIEW C Y1 - 2013 A1 - G. Wendell Misch A1 - B. A. Brown A1 - George M. Fuller VL - 88 UR - https://people.nscl.msu.edu/~brown/brown-all-papers/512-2013-PhysRevC.88.015807.pdf ER - TY - JOUR T1 - Alternative splicing of a multi-drug transporter from Pseudoperonospora cubensis generates an RXLR effector protein that elicits a rapid cell death. JF - PLoS ONE, in press Y1 - 2012 A1 - Savory, E. A1 - Zou, C. A1 - Adhikari, B. A1 - Hamilton, J. P. A1 - C. R. Buell A1 - Shiu, S.-H. A1 - B. Day ER - TY - JOUR T1 - A Census of Star-Forming Galaxies in the z~9-10 Universe based on HST+Spitzer Observations Over 19 CLASH clusters: Three Candidate z~9-10 Galaxies and Improved Constraints on the Star Formation Rate Density at z~9.2 JF - Astrophysical Journal Y1 - 2012 A1 - Bouwens, R, A1 - Bradley, L A1 - Zitrin, A. A1 - Coe, D. A1 - Franx, M. A1 - Zheng, W A1 - Smit, R A1 - Host, O. A1 - Postman, M. A1 - Moustakas, L A1 - Labbe, I A1 - Carrasco, M. A1 - Molino, A. A1 - Donahue, M A1 - Kelson, D. D A1 - Meneghetti, M A1 - Jha, S. A1 - Benitez, N A1 - Lemze, D A1 - Umetsu, K A1 - Broadhurst, T. A1 - Moustakas, J. A1 - Rosati, P. A1 - Bartelmann, M A1 - Ford, H A1 - Graves, G. A1 - Grillo, C. A1 - Infante, L A1 - Jiminez-Teja, Y A1 - Jouvel, S A1 - Lahav, O. A1 - Maoz, D A1 - Medezinski, E A1 - Melchior, P A1 - Merten, J A1 - Nonino, M. A1 - Ogaz, S. A1 - Seitz, S. KW - Astrophysics - Cosmology and Extragalactic Astrophysics ER - TY - JOUR T1 - CLASH: Discovery of a Bright z ~= 6.2 Dwarf Galaxy Quadruply Lensed by MACS J0329.6-0211 JF - The Astrophysical Journal Letters Y1 - 2012 A1 - Zitrin, A. A1 - Moustakas, J. A1 - Bradley, L A1 - Coe, D. A1 - Moustakas, L. A. A1 - Postman, M. A1 - Shu, X A1 - Zheng, W A1 - Benítez, N. A1 - Bouwens, R. A1 - Broadhurst, T. A1 - Ford, H A1 - Host, O. A1 - Jouvel, S A1 - Koekemoer, A. A1 - Meneghetti, M A1 - Rosati, P. A1 - Donahue, M A1 - Grillo, C. A1 - Kelson, D. A1 - Lemze, D A1 - Medezinski, E A1 - Molino, A. A1 - Nonino, M. A1 - Ogaz, S. KW - dark matter KW - galaxies: clusters: general KW - galaxies: clusters: individual: MACS J0329.6-0211 KW - Galaxies: High-Redshift KW - gravitational lensing: strong VL - 747 IS - 1 ER - TY - JOUR T1 - CLASH: Mass Distribution in and around MACS J1206.2-0847 from a Full Cluster Lensing Analysis JF - The Astrophysical Journal Y1 - 2012 A1 - Umetsu, Keiichi A1 - Medezinski, Elinor A1 - Nonino, Mario A1 - Merten, Julian A1 - Zitrin, Adi A1 - Molino, Alberto A1 - Grillo, Claudio A1 - Carrasco, Mauricio A1 - Donahue, Megan A1 - Mahdavi, Andisheh A1 - Coe, Dan A1 - Postman, Marc A1 - Koekemoer, Anton A1 - Czakon, Nicole A1 - Sayers, Jack A1 - Mroczkowski, Tony A1 - Golwala, Sunil A1 - Koch, Patrick M A1 - Lin, Kai-Yang A1 - Molnar, Sandor M A1 - Rosati, Piero A1 - Balestra, Italo A1 - Mercurio, Amata A1 - Scodeggio, Marco A1 - Biviano, Andrea A1 - Anguita, Timo A1 - Infante, Leopoldo A1 - Seidel, Gregor A1 - Sendra, Irene A1 - Jouvel, Stephanie A1 - Host, Ole A1 - Lemze, Doron A1 - Broadhurst, Tom A1 - Meneghetti, Massimo A1 - Moustakas, Leonidas A1 - Bartelmann, Matthias A1 - Benítez, Narciso A1 - Bouwens, Rychard A1 - Bradley, Larry A1 - Ford, Holland A1 - Jiménez-Teja, Yolanda A1 - Kelson, Daniel A1 - Lahav, Ofer A1 - Melchior, Peter A1 - Moustakas, John A1 - Ogaz, Sara A1 - Seitz, Stella A1 - Zheng, Wei KW - cosmology: observations KW - dark matter KW - galaxies: clusters: individual: MACS J1206.2-0847 KW - gravitational lensing: strong KW - gravitational lensing: weak VL - 755 IS - 1 ER - TY - JOUR T1 - CLASH: New Multiple Images Constraining the Inner Mass Profile of MACS J1206.2-0847 JF - The Astrophysical Journal Y1 - 2012 A1 - Zitrin, A. A1 - Rosati, P. A1 - Nonino, M. A1 - Grillo, C. A1 - Postman, M. A1 - Coe, D. A1 - Seitz, S. A1 - Eichner, T A1 - Broadhurst, T. A1 - Jouvel, S A1 - Balestra, I. A1 - Mercurio, A A1 - Scodeggio, M A1 - Benítez, N. A1 - Bradley, L A1 - Ford, H A1 - Host, O. A1 - Jimenez-Teja, Y A1 - Koekemoer, A. A1 - Zheng, W A1 - Bartelmann, M A1 - Bouwens, R. A1 - Czoske, O A1 - Donahue, M A1 - Graur, O A1 - Graves, G. A1 - Infante, L A1 - Jha, S. A1 - Kelson, D. A1 - Lahav, O. A1 - Lazkoz, R A1 - Lemze, D A1 - Lombardi, M. A1 - Maoz, D A1 - McCully, C. A1 - Medezinski, E A1 - Melchior, P A1 - Meneghetti, M A1 - Merten, J A1 - Molino, A. A1 - Moustakas, L. A. A1 - Ogaz, S. A1 - Patel, B. A1 - Regoes, E. A1 - Riess, A. A1 - Rodney, S A1 - Umetsu, K A1 - Van der Wel, A. KW - dark matter KW - galaxies: clusters: general KW - galaxies: clusters: individual: MACS J1206.2–0847 KW - Galaxies: High-Redshift KW - gravitational lensing: strong VL - 749 IS - 2 ER - TY - JOUR T1 - CLASH: Precise New Constraints on the Mass Profile Galaxy Cluster A2261 JF - The Astrophysical Journal Y1 - 2012 A1 - Coe, Dan A1 - Umetsu, Keiichi A1 - Zitrin, Adi A1 - Donahue, Megan A1 - Medezinski, Elinor A1 - Postman, Marc A1 - Carrasco, Mauricio A1 - Anguita, Timo A1 - Geller, Margaret J A1 - Rines, Kenneth J. A1 - Diaferio, Antonaldo A1 - Kurtz, Michael J A1 - Bradley, Larry A1 - Koekemoer, Anton A1 - Zheng, Wei A1 - Nonino, Mario A1 - Molino, Alberto A1 - Mahdavi, Andisheh A1 - Lemze, Doron A1 - Infante, Leopoldo A1 - Ogaz, Sara A1 - Melchior, Peter A1 - Host, Ole A1 - Ford, Holland A1 - Grillo, Claudio A1 - Rosati, Piero A1 - Jiménez-Teja, Yolanda A1 - Moustakas, John A1 - Ascaso, Begoña A1 - Lahav, Ofer; A1 - Bartelmann, Matthias A1 - Benítez, Narciso A1 - Bouwens, Rychard A1 - Graur, Or A1 - Graves, Genevieve A1 - Jha, Saurab A1 - Jouvel, Stephanie A1 - Kelson, Daniel A1 - Moustakas, Leonidas A1 - Maoz, Dan A1 - Meneghetti, Massimo A1 - Merten, Julian A1 - Riess, Adam A1 - Rodney, Steve A1 - Seitz, Stella VL - 757 IS - 1 ER - TY - JOUR T1 - Expression profiling of Cucumis sativus in response to infection by Pseudoperonospora cubensis JF - PLoS ONE, in press Y1 - 2012 A1 - C. R. Buell A1 - Adhikari, B. A1 - Savory, E. A1 - Vaillancourt, B. A1 - Childs, K. L. A1 - Hamilton, J. P. A1 - B. Day ER - TY - JOUR T1 - A magnified young galaxy from about 500 million years after the Big Bang JF - Nature Y1 - 2012 A1 - Zheng, Wei A1 - Postman, Marc A1 - Zitrin, Adi A1 - Moustakas, John A1 - Shu, Xinwen A1 - Jouvel, Stephanie A1 - Høst, Ole A1 - Molino, Alberto A1 - Bradley, Larry A1 - Coe, Dan A1 - Moustakas, Leonidas A A1 - Carrasco, Mauricio A1 - Ford, Holland A1 - Benítez, Narciso A1 - Lauer, Tod R A1 - Seitz, Stella; B A1 - Bouwens, Rychard A1 - Koekemoer, Anton A1 - Medezinski, Elinor A1 - Bartelmann, Matthias A1 - Broadhurst, Tom A1 - Donahue, Megan A1 - Grillo, Claudio A1 - Infante, Leopoldo A1 - Jha, Saurabh W A1 - Kelson, Daniel D. A1 - Lahav, Ofer A1 - Lemze, Doron A1 - Melchior, Peter A1 - Meneghetti, Massimo A1 - Merten, Julian A1 - Nonino, Mario A1 - Ogaz, Sara A1 - Rosati, Piero A1 - Umetsu, Keiichi A1 - van der Wel, Arjen VL - 489 IS - 7416 ER - TY - JOUR T1 - Mass Measurements of the Neutron-Deficient 41Ti, 45Cr, 49Fe, and 53Ni Nuclides: ￼First Test of the Isobaric Multiplet Mass Equation in fp-Shell Nuclei JF - PHYSICAL REVIEW LETTERS Y1 - 2012 A1 - Y.H. Zhang A1 - H.S. Xu A1 - Yu. A. Litvinov A1 - X.L. Tu A1 - X.L. Yan A1 - S. Typel A1 - K. Blaum A1 - M. Wang A1 - X.H. Zhou A1 - Y. Sun A1 - B. A. Brown A1 - Y.J. Yuan A1 - J.W. Xia A1 - J.C. Yang A1 - G. Audi A1 - X.C. Chen A1 - G.B. Jia A1 - Z.G. Hu A1 - X.W. Ma A1 - R.S. Mao A1 - B. Mei A1 - P. Shuai A1 - Z.Y. Sun A1 - S.T. Wang A1 - G.Q. Xiao A1 - X. Xu A1 - T. Yamaguchi A1 - Y. Yamaguchi A1 - Y.D. Zang A1 - H.W. Zhao A1 - T.C. Zhao A1 - W. Zhang A1 - W.L. Zhan VL - 109 UR - http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.109.102501 ER - TY - JOUR T1 - Medical image-based simulation of abdominal aortic aneurysm growth JF - Mechanics Research Communications Y1 - 2012 A1 - Zeinali-Davarani, S. A1 - Baek, S. KW - Aneurysm rupture KW - Finite element analysis KW - Inverse optimization KW - Patient-specific modeling KW - Vascular growth and remodeling AB -Advances in theoretical modeling of biological tissue growth and remodeling ({G&R)} and computational biomechanics have been helpful to capture salient features of vascular remodeling during the progression of vascular diseases. Nevertheless, application of such advances to individualized diagnosis and clinical treatment of diseases such as abdominal aortic aneurysm ({AAA)} remains challenging. As a step toward that goal, in this paper, we present a computational framework necessary towards patient-specific modeling of {AAA} growth. Prior to {AAA} simulations, using an inverse optimization method, initial material parameters are identified for a healthy aorta such that a homeostatic condition is satisfied for the given medical image-based geometrical model under physiological conditions. Various shapes of {AAAs} are then computationally created by inducing elastin degradation with different spatio-temporal distributions. The simulation results emphasize the role of extent of elastin damage, geometric complexity of an enlarged {AAA}, and sensitivity of stress-mediated collagen turnover on the wall stress distribution and the rate of expansion. The results also show that the distributions of stress and local expansion initially correspond to the extent of elastin damage, but change via stress-mediated tissue {G&R} depending on the aneurysm shape. Finally, we suggest that the current framework can be utilized along with medical images from an individual patient to predict the {AAA} shape and mechanical properties in the near future via an inverse scheme.

VL - 42 UR - http://www.sciencedirect.com/science/article/pii/S0093641312000109 ER - TY - Generic T1 - Methylmercury (MeHg) disrupts fluo4 fluorescence in cerebellar slices from GABAA receptor alpha6 (-/-) mice Y1 - 2012 A1 - A B Bradford A1 - W D Atchison PB - Society of Toxicology 2012 CY - San Francisco, CA ER - TY - JOUR T1 - mRNA-Seq analysis of the Pseudoperonospora cubensis transcriptome during cucumber (Cucumis sativus L.) infection JF - PLoS ONE, in press Y1 - 2012 A1 - Savory, E. A1 - Adhikari, B. A1 - Hamilton, J. P. A1 - Vaillancourt, B. A1 - C. R. Buell A1 - B. Day ER - TY - CONF T1 - Simultaneous Iterative Reconstruction Techniques for Computerized Tomography on GPU T2 - Inverse Problems Symposium Y1 - 2012 A1 - Xin, Junjun A1 - Bardel, Chuck A1 - Dirk Colbry A1 - Udpa, Lalita A1 - Udpa, Satish JF - Inverse Problems Symposium CY - East Lansing, MI ER - TY - JOUR T1 - The Comprehensive Phytopathogen Genomics Resource: An electronic resource for data-mining plant pathogen genomes JF - Database, doi: 10.1093/database/bar053. Y1 - 2011 A1 - Hamilton, J. P. A1 - Neeno-Eckwall, E. A1 - Adhikari, B. A1 - Perna, N. A1 - Tisserat, N. A1 - Leach, J.E. A1 - Lévesque, C. A. A1 - C. R. Buell ER - TY - THES T1 - MODELS TO AID IN THE SELECTION OF PROCEDURES USED TO MANAGE LAKE ERIE WALLEYE (SANDER VITREUS) Y1 - 2011 A1 - Berger, A.M. PB - Michigan State University ER - TY - CONF T1 - Multi-label Learning with Incomplete Class Assignments T2 - Proceedings of IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2011) Y1 - 2011 A1 - S.S. Bucak A1 - Jin, Rong A1 - Jain, Anil K. JF - Proceedings of IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2011) ER - TY - JOUR T1 - Search for the largest two-dimensional aggregates of boron: An ab initio study JF - Phys. Rev. B Y1 - 2011 A1 - Ihsan Boustani A1 - Zhen Zhu A1 - David Tománek PB - American Physical Society VL - 83 ER - TY - JOUR T1 - Second-order selection for evolvability in a large Escherichia coli population JF - Science Y1 - 2011 A1 - Woods, R. J. A1 - Barrick, J. E. A1 - T. F. Cooper A1 - U. Shrestha A1 - M. R. Kauth A1 - Lenski, R.E. VL - 331 ER - TY - JOUR T1 - Second-order selection for evolvability in a large Escherichia coli population JF - Science Y1 - 2011 A1 - Woods, R. J. A1 - Barrick, E A1 - T. F. Cooper A1 - U. Shrestha A1 - M. R. Kauth A1 - Lenski, R.E. VL - 331 ER - TY - JOUR T1 - Escherichia coli rpoB mutants have increased evolvability in proportion to their fitness defects JF - Molecular Biology and Evolution Y1 - 2010 A1 - Barrick, J. E. A1 - M. R. Kauth A1 - C. C. Strelioff A1 - Lenski, R.E. VL - 27 ER - TY - JOUR T1 - Galaxy Cluster Radio Relics in Adaptive Mesh Refinement Cosmological Simulations: Relic Properties and Scaling Relationships JF - ArXiv e-prints Y1 - 2010 A1 - Skillman, S. W. A1 - undefined A1 - O'Shea, B. W. A1 - Burns, J. O. A1 - Smith, B. D. A1 - Turk, M. J. KW - Astrophysics - Cosmology and Extragalactic Astrophysics ER - TY - JOUR T1 - Galaxy Clusters at the Edge: Temperature, Entropy, and Gas Dynamics Near the Virial Radius JF - \apj Y1 - 2010 A1 - Burns, J. O. A1 - Skillman, S. W. A1 - O'Shea, B. W. KW - cosmology: observations KW - cosmology: theory KW - hydrodynamics KW - intergalactic medium KW - methods: numerical KW - X-rays: galaxies: clusters VL - 721 ER - TY - CONF T1 - Investigating whether HyperNEAT produces modular neural networks T2 - Proceedings of the Genetic and Evolutionary Computation Conference Y1 - 2010 A1 - Clune, J. A1 - Beckmann, B.E. A1 - McKinley, P.K. A1 - Ofria, C. JF - Proceedings of the Genetic and Evolutionary Computation Conference PB - ACM ER - TY - CONF T1 - Large-Scale Simulations of Supersonic Turbulent Reacting Flows T2 - 48th AIAA Aerospace Sciences Meeting Y1 - 2010 A1 - Li, Z. A1 - Jaberi, F.A. A1 - Banaeizadeh, A. AB -The scalar filtered mass density function (FMDF) is further developed and employed for large-eddy simulations (LES) of high speed turbulent flows in complex geometries. LES/FMDF is implemented via an efficient, hybrid numerical method. In this method, the filtered compressible Navier-Stokes equations in curvilinear coordinate systems are solved with a generalized, high-order, multi-block, compact differencing scheme. Turbulent mixing and combustion are modeled with the FMDF. The LES/FMDF method is used for simulations of isotropic turbulent flow in a piston-cylinder assembly, the flow in a shock tube and a supersonic co-axial helium-air jet. The critical role of pressure in the FMDF equation when applied to compressible flows is studied. It is shown that LES/FMDF is reliable and is able to simulate compressible turbulent mixing and combustion in supersonic flows.

JF - 48th AIAA Aerospace Sciences Meeting PB - AIAA CY - Orlando, FL ER - TY - CONF T1 - One Class Matrix Completion with Low Density Factorizations T2 - Proceedings of IEEE International Conference on Data Mining (ICDM 2010) Y1 - 2010 A1 - V. Sindhwani A1 - S.S. Bucak A1 - J. Hu A1 - A. Mojsilovic JF - Proceedings of IEEE International Conference on Data Mining (ICDM 2010) ER - TY - JOUR T1 - On the Origin of the Highest Redshift Gamma-Ray Bursts JF - \apj Y1 - 2010 A1 - Belczynski, K. A1 - Holz, D. E. A1 - Fryer, C. L. A1 - Berger, E. A1 - Hartmann, D. H. A1 - O'Shea, B. W. KW - binaries: general KW - gamma rays: bursts KW - stars: formation VL - 708 ER - TY - JOUR T1 - The Properties of X-ray Cold Fronts in a Statistical Sample of Simulated Galaxy Clusters JF - \apj Y1 - 2010 A1 - Hallman, E. J. A1 - Skillman, S. W. A1 - undefined A1 - Smith, B. D. A1 - O'Shea, B. W. A1 - Burns, J. O. A1 - Norman, M. L. KW - galaxies: clusters: intracluster medium KW - large-scale structure of universe KW - methods: numerical KW - X-rays: galaxies: clusters VL - 725 ER - TY - CONF T1 - Evolving coordinated quadruped gaits with the HyperNEAT generative encoding T2 - Proceedings of the IEEE Congress on Evolutionary Computation Y1 - 2009 A1 - Clune, J. A1 - Beckmann, B.E. A1 - Ofria, C. A1 - Pennock, R.T. JF - Proceedings of the IEEE Congress on Evolutionary Computation ER - TY - CONF T1 - HybrID: A Hybridization of Indirect and Direct Encodings for Evolutionary Computation T2 - Proceedings of the European Conference on Artificial Life Y1 - 2009 A1 - Clune, J. A1 - Beckmann, B.E. A1 - Pennock, R.T. A1 - Ofria, C. JF - Proceedings of the European Conference on Artificial Life ER - TY - CONF T1 - LES/FMDF of Spray Combustion in Internal Combustion Engines T2 - National Combustion Meeting Y1 - 2009 A1 - Banaeizadeh, A. A1 - Harold Schock A1 - Jaberi, F.A. AB -The two-phase filtered mass density function (FMDF) model is employed for large-eddy simulation (LES) of turbulent spray combustion in internal combustion (IC) engines. The LES/FMDF is implemented with an efficient, hybrid numerical method. In this method, the filtered compressible Navier-Stokes equations in curvilinear coordinate systems are solved with a generalized, high-order, multi-block, compact differencing scheme. The spray and the FMDF are implemented with Lagrangian methods. The LES/FMDF methodology has been used for simulations of turbulent combustion in a rapid compression machine (RCM) and in a direct-injection spark-ignition (DISI) engine. For both RCM and DISI engine, the complex interactions among turbulent velocity, fuel droplets and combustion are shown to be well captured with the LES/FMDF. The results for the DISI engine indicate that the size, velocity, evaporation and combustion of the sprayed fuel droplets are strongly affected by the unsteady, vortical motions generated by the incoming air during the intake stroke. In turn, the droplets are found to change the in-cylinder flow structure.

JF - National Combustion Meeting PB - The Combustion Institute CY - Ann Arbor, Michigan ER - TY - JOUR T1 - Protecting the Amazon with Protected Areas JF - PNAS Y1 - 2009 A1 - Robert Walker A1 - Moore, Nathan A1 - Arima, Eugenio A1 - Perz, Stephen A1 - Simmons, Cynthia A1 - Caldas, Marcellus A1 - Vergara, Dante A1 - Bohrer, Claudio VL - 106 ER - TY - JOUR T1 - The Santa Fe Light Cone Simulation Project. II. The Prospects for Direct Detection of the Whim with SZE Surveys JF - \apj Y1 - 2009 A1 - Hallman, E. J. A1 - O'Shea, B. W. A1 - Smith, B. D. A1 - Burns, J. O. A1 - Norman, M. L. KW - cosmic microwave background KW - cosmology: observations KW - cosmology: theory KW - galaxies: clusters: general KW - hydrodynamics KW - methods: numerical VL - 698 ER - TY - JOUR T1 - Cosmological Shocks in Adaptive Mesh Refinement Simulations and the Acceleration of Cosmic Rays JF - \apj Y1 - 2008 A1 - Skillman, S. W. A1 - O'Shea, B. W. A1 - Hallman, E. J. A1 - Burns, J. O. A1 - Norman, M. L. KW - cosmology: theory KW - hydrodynamics KW - ISM: Cosmic Rays KW - methods: numerical VL - 689 ER - TY - CONF T1 - Large Eddy Simulation of High Speed Turbulent Reacting Flows Y1 - 2008 A1 - Zhaorui, Li A1 - Banaeizadeh, A. A1 - Jaberi, F.A. CY - Hawaii ER - TY - CONF T1 - Large Eddy Simulations of Turbulent Flows in IC Engines T2 - ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE2008) Y1 - 2008 A1 - Banaeizadeh, A. A1 - Afshari, A. A1 - Jaberi, F.A. A1 - H. Schock AB -A new computational methodology is developed and tested for large eddy simulation (LES) of turbulent flows in internal combustion (IC) engines. In this methodology, the filtered compressible Navier-Stokes equations in curvilinear coordinate systems are solved via a generalized, high-order, multi-block, compact differencing scheme and various subgrid-scale (SGS) stress closures. Both reacting and nonreacting flows with and without spray are considered. The LES models have been applied to a piston-cylinder assembly with a stationary open valve and harmonically moving flat piston. The flow in a direct-injection spark-ignition (DISI) engine is also considered. It is observed that during the intake stroke of the engine operation, large-scale unsteady turbulent flow motions are developed behind the intake valves. The physical features of these turbulent motions and the ability of LES to capture them are studied and tested by simulating the flow in a simple configuration involving a stationary valve. The flow statistics predicted by LES are shown to compare well with the available experimental data. The DISI configuration includes all the complexities involved in a realistic single-cylinder IC engine, such as the complex geometry, moving valves, moving piston, spray and combustion. The spray combustion is simulated with the recently developed two-phase filtered mass density (FMDF) model.

JF - ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIE2008) PB - ASME CY - Brooklyn, New York SN - 978-0-7918-4327-7 ER - TY - JOUR T1 - Coupled-Cluster and Configuration-Interaction Calculations for Heavy Nuclei JF - Physical Review Lettters Y1 - 2007 A1 - M. Horoi A1 - J. R Gour A1 - M. Wloch A1 - M.D. Lodriguito A1 - B. A. Brown A1 - Piotr Piecuch AB -We compare coupled-cluster (CC) and configuration-interaction (CI) results for 56Ni obtained in the pf-shell basis, focusing on practical CC approximations that can be applied to systems with dozens or hundreds of correlated fermions. The weight of the reference state and the strength of correlation effects are controlled by the gap between the f7/2 orbit and the f5/2, p3/2, p1/2 orbits. Independent of the gap, the CC method with 1p-1h and 2p-2h clusters and a noniterative treatment of 3p-3h clusters is as accurate as the more demanding CI approach truncated at the 4p-4h level.

VL - 98 IS - 11 ER - TY - JOUR T1 - Shape and Structure of N = Z 64Ge: Electromagnetic Transition Rates from the Application ￼of the Recoil Distance Method to a Knockout Reaction JF - PHYSICAL REVIEW LETTERS Y1 - 2007 A1 - K. Starosta A1 - A. Dewald A1 - A. Dunomes A1 - P. Adrich A1 - A.M. Amthor A1 - T. Baumann A1 - D. Bazin A1 - M. Bowen A1 - B. A. Brown A1 - A. Chester A1 - A. Gade A1 - D. Galaviz A1 - T. Glasmacher A1 - T. Ginter A1 - M. Hausmann A1 - M. Horoi A1 - J. Jolie A1 - B. Melon A1 - D. Miller A1 - V. Moeller A1 - R.P. Norris A1 - T. Pissulla A1 - M. Portillo A1 - W. Rother A1 - Y. Shimbara A1 - A. Stolz A1 - C. Vaman A1 - P. Voss A1 - D. Weisshaar A1 - V. Zelevinsky VL - 99 UR - http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.99.042503 ER - TY - JOUR T1 - Z = 0 Shell Gap near 100Sn from Intermediate-Energy Coulomb Excitations ￼in Even-Mass 106-112Sn Isotopes JF - PHYSICAL REVIEW LETTERS Y1 - 2007 A1 - C. Vaman A1 - C. Andreoiu A1 - D. Bazin A1 - A. Beccerril A1 - B. A. Brown A1 - C.M. Campbell A1 - A. Chester A1 - J.M. Cook A1 - D.C. Dinca A1 - A. Gade A1 - D. Galaviz A1 - T. Glasmacher A1 - M. {Hjorth-Jensen} A1 - M. Horoi A1 - D. Miller A1 - V. Moeller A1 - W. F. Mueller A1 - A. Schiller A1 - K. Starosta A1 - A. Stolz A1 - J.R. Terry A1 - A. Volya A1 - V. Zelevinsky A1 - H. Zwahlen VL - 99 UR - http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.99.162501 ER - TY - JOUR T1 - Ab initio determination of solid-state nanostructure JF - Nature Y1 - 2006 A1 - P. Juhás A1 - D. M. Cherba A1 - P. M. Duxbury A1 - W. F. Punch A1 - S. J. L. Billinge AB -Advances in materials science and molecular biology followed rapidly from the ability to characterize atomic structure using single crystals1, 2, 3, 4. Structure determination is more difficult if single crystals are not available5. Many complex inorganic materials that are of interest in nanotechnology have no periodic long-range order and so their structures cannot be solved using crystallographic methods6. Here we demonstrate that ab initio structure solution of these nanostructured materials is feasible using diffraction data in combination with distance geometry methods. Precise, sub-ångström resolution distance data are experimentally available from the atomic pair distribution function (PDF)6, 7. Current PDF analysis consists of structure refinement from reasonable initial structure guesses6, 7 and it is not clear, a priori, that sufficient information exists in the PDF to obtain a unique structural solution. Here we present and validate two algorithms for structure reconstruction from precise unassigned interatomic distances for a range of clusters. We then apply the algorithms to find a unique, ab initio, structural solution for C60 from PDF data alone. This opens the door to sub-ångström resolution structure solution of nanomaterials, even when crystallographic methods fail.

VL - 440 ER - TY - JOUR T1 - Half-life and spin of 60Mng JF - Physical Review C Y1 - 2006 A1 - S. N. Liddick A1 - P. F. Mantica A1 - B. A. Brown A1 - M. P. Carpenter A1 - A. D. Davies A1 - M. Horoi A1 - R. V. F. Janssens A1 - A. C. Morton A1 - W. F. Mueller A1 - J. Pavan A1 - H. Schatz A1 - A. Stolz A1 - S. L. Tabor A1 - B. E. Tomlin A1 - M. Wiedeking AB -A value of 0.28±0.02 s has been deduced for the half-life of the ground state of {60Mn,} in sharp contrast to the previously adopted value of 51±6 s. Access to the low-spin {60Mn} ground state was accomplished via β decay of the 0+ {60Cr} parent nuclide. New low-energy states in {60Mn} have been identified from β-delayed γ-ray spectroscopy. The new, shorter half-life of {60Mng} is not suggestive of isospin-forbidden β decay, and new spin and parity assignments of 1+ and 4+ have been adopted for the ground and isomeric β-decaying states, respectively, of {60Mn.}

VL - 73 IS - 4 N1 - Copyright {(C)} 2010 The American Physical Society; Please report any problems to prola@aps.org ER - TY - JOUR T1 - Half-life and spin of 60Mng JF - PHYSICAL REVIEW C Y1 - 2006 A1 - S. N. Liddick A1 - P. F. Mantica A1 - B. A. Brown A1 - M. P. Carpenter A1 - A. D. Davies A1 - M. Horoi A1 - R. V. F. Janssens A1 - A. C. Morton A1 - W. F. Mueller A1 - J. Pavan A1 - H. Schatz A1 - A. Stolz A1 - S. L. Tabor A1 - B. E. Tomlin A1 - M. Wiedeking VL - 73 UR - http://journals.aps.org/prc/abstract/10.1103/PhysRevC.73.044322 IS - 4 ER - TY - JOUR T1 - Shell model analysis of the 56Ni spectrum in the full pf model space JF - PHYSICAL REVIEW C Y1 - 2006 A1 - M. Horoi A1 - B. A. Brown A1 - T. Otsuka A1 - M. Honma A1 - T. Mizusaki VL - 73 UR - http://journals.aps.org/prc/abstract/10.1103/PhysRevC.73.061305 IS - 6 ER -