Iowa State University

output

19922026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2017Show all

344 papers · 1 filter

math.CO2017★ 17 cited

Pentagons in triangle-free graphs

Bernard Lidický, Florian Pfender

For all $n \geq 9$ , we show that the only triangle-free graphs on $n$ vertices maximizing the number $5$ -cycles are balanced blow-ups of a 5-cycle. This completely resolves a conject…

stat.ML2017★ 45 cited

Merging $K$ -means with hierarchical clustering for identifying general-shaped groups

Anna D. Peterson, Arka P. Ghosh, Ranjan Maitra

Clustering partitions a dataset such that observations placed together in a group are similar but different from those in other groups. Hierarchical and $K$ -means clustering are tw…

cond-mat.mtrl-sci2017

Ternary Bismuthide SrPtBi2: Computation and Experiment in Synergism to Explore Solid-State Materials

Xin Gui, Xin Zhao, Zuzanna Sobczak +4

A combination of theoretical calculation and the experimental synthesis to explore the new ternary compound is demonstrated in the Sr-Pt-Bi system. Since Pt-Bi is considered as a n…

cs.CC2017★ 10 cited

Notes on complexity of packing coloring

Minki Kim, Bernard Lidický, Tomáš Masařík +1

A packing $k$ -coloring for some integer $k$ of a graph $G = (V, E)$ is a mapping $φ : V \to {1, \dots, k}$ such that any two vertices $u, v$ of color $φ (u) = φ (v)$ are in distance at least…

cond-mat.str-el2017★ 9 cited

Ferromagnetism or slow paramagnetic relaxation in Fe-doped Li $_{3}$ N?

M. Fix, A. Jesche, S. G. Jantz +6

We report on isothermal magnetization, Mössbauer spectroscopy, and magnetostriction as well as temperature-dependent alternating-current (ac) susceptibility, specific heat, and the…

cond-mat.supr-con2017★ 20 cited

NMR Study of the New Magnetic Superconductor CaK(Fe$0.951Ni0.049)4As4: Microscopic Coexistence of Hedgehog Spin-vortex Crystal and Superconductivity

Q. -P. Ding, W. R. Meier, A. E. Böhmer +3

Coexistence of a new-type antiferromagnetic (AFM) state, the so-called hedgehog spin-vortex crystal (SVC), and superconductivity (SC) is evidenced by $^{75}$ As nuclear magnetic res…

physics.flu-dyn2017★ 25 cited

SPH simulation of fuel drop impact on heated surfaces

Xiufeng Yang, Manjil Ray, Song-Charng Kong +1

The interaction of liquid drops and heated surfaces is of great importance in many applications. This paper describes a numerical method, based on smoothed particle hydrodynamics (…

physics.flu-dyn2017★ 52 cited

Numerical study of natural convection states in a horizontal concentric cylindrical annulus using SPH method

Xiufeng Yang, Song-Charng Kong

Natural convection is of great importance in many engineering applications. This paper presents a smoothed particle hydrodynamics (SPH) method for natural convection. The conservat…

cond-mat.str-el2017★ 11 cited

Bulk electronic structure of non-centrosymmetric EuTGe3 (T= Co, Ni, Rh, Ir) studied by hard x-ray photoelectron spectroscopy

Yuki Utsumi, Deepa Kasinathan, Przemyslaw Swatek +4

Non-centrosymmetric EuTGe3 (T=Co, Ni, Rh, and Ir) possesses magnetic Eu2+ ions and antiferromagnetic ordering appears at low temperatures. Transition metal substitution leads to ch…

stat.ML2017

Provably Accurate Double-Sparse Coding

Thanh V. Nguyen, Raymond K. W. Wong, Chinmay Hegde

Sparse coding is a crucial subroutine in algorithms for various signal processing, deep learning, and other machine learning applications. The central goal is to learn an overcompl…

astro-ph.GA2017★ 24 cited

Diffuse X-ray-emitting Gas in Major Mergers

Beverly J. Smith, Kristen Campbell, Curtis Struck +5

Using archived data from the Chandra X-ray telescope, we have extracted the diffuse X-ray emission from 49 equal-mass interacting/merging galaxy pairs in a merger sequence, from wi…

eess.SY2017

Steering the distribution of agents in mean-field and cooperative games

Yongxin Chen, Tryphon T. Georgiou, Michele Pavon

The purpose of this work is to pose and solve the problem to guide a collection of weakly interacting dynamical systems (agents, particles, etc.) to a specified terminal distributi…

math.NA2017★ 2 cited

Analysis of a second order discontinuous Galerkin finite element method for the Allen-Cahn equation and the curvature-driven geometric flow

Huanrong Li, Junzhao Hu

The paper proposes and analyzes an efficient second-order in time numerical approximation for the Allen-Cahn equation, which is a second order nonlinear equation arising from the p…

physics.soc-ph2017

Emergence of a spectral gap in a class of random matrices associated with split graphs

Kevin E. Bassler, R. K. P. Zia

Motivated by the intriguing behavior displayed in a dynamic network that models a population of extreme introverts and extroverts (XIE), we consider the spectral properties of ense…

cond-mat.stat-mech2017★ 6 cited

A self-contained algorithm for determination of solid-liquid equilibria in an alloy system

Lin Yang, Yang Sun, Zhuo Ye +4

We describe a self-contained procedure to evaluate the free energy of liquid and solid phases of an alloy system. The free energy of a single-element solid phase is calculated with…

hep-ex2017★ 32 cited

Study of the $X^{\pm} (5568)$ state with semileptonic decays of the $B_{s}^{0}$ meson

D0 Collaboration

We present a study of the $X^{\pm} (5568)$ using semileptonic decays of the $B_{s}^{0}$ meson using the full Run II integrated luminosity of 10.4 fb $^{- 1}$ in proton-antiproton collisions…

math.OC2017★ 2 cited

Dynamic Game-based Maintenance Scheduling of Integrated Electric and Natural Gas Grids with a Bilevel Approach

Chong Wang, Zhaoyu Wang, Yunhe Hou +1

This paper proposes a dynamic game-based maintenance scheduling mechanism for the asset owners of the natural gas grid and the power grid by using a bilevel approach. In the upper…

hep-ex2017★ 104 cited

Search for the Standard Model Higgs boson produced in association with top quarks and decaying into a $b b ˉ$ pair in $pp$ collisions at $s$ = 13 TeV with the ATLAS detector

ATLAS Collaboration

A search for the Standard Model Higgs boson produced in association with a top-quark pair, $t t ˉ H$ , is presented. The analysis uses 36.1 fb $^{- 1}$ of $pp$ collision data at $\s…

hep-ex2017★ 151 cited

Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector

ATLAS Collaboration

A search for the associated production of the Higgs boson with a top quark pair ( $t t ˉ H$ ) is reported. The search is performed in multilepton final states using a dataset corre…

cond-mat.mtrl-sci2017★ 65 cited

Magnetoresistance in YBi and LuBi semimetals due to nearly perfect carrier compensation

Orest Pavlosiuk, Przemysław Swatek, Dariusz Kaczorowski +1

Monobismuthides of yttrium and lutetium are shown as new representatives of materials which exhibit extreme magnetoresistance and magnetic-field-induced resistivity plateau. At low…

astro-ph.HE2017★ 16 cited

Multivariate $t$ -Mixtures-Model-based Cluster Analysis of BATSE Catalog Establishes Importance of All Observed Parameters, Confirms Five Distinct Ellipsoidal Sub-populations of Gamma Ray Bursts

Souradeep Chattopadhyay, Ranjan Maitra

Determining the kinds of gamma-ray bursts (GRBs) has been of interest to astronomers for many years. We analyzed 1599 GRBs from the Burst and Transient Source Experiment (BATSE) 4B…

hep-ex2017★ 123 cited

Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at $s = 13$ TeV with the ATLAS detector

ATLAS Collaboration

A search for electroweak production of supersymmetric particles in scenarios with compressed mass spectra in final states with two low-momentum leptons and missing transverse momen…

math.AP2017

The obstacle problem for a fractional Monge--Ampère equation

Y. Jhaveri, P. R. Stinga

We study the obstacle problem for a nonlocal, degenerate elliptic Monge--Ampère equation. We show existence and regularity of a unique classical solution to the problem and regular…

cond-mat.supr-con2017★ 17 cited

Magnetic phase diagram of the iron pnictides in the presence of spin-orbit coupling: Frustration between $C_{2}$ and $C_{4}$ magnetic phases

Morten H. Christensen, Peter P. Orth, Brian M. Andersen +1

We investigate the impact of spin anisotropic interactions, promoted by spin-orbit coupling, on the magnetic phase diagram of the iron-based superconductors. Three distinct magneti…

Pentagons in triangle-free graphs

Merging K-means with hierarchical clustering for identifying general-shaped groups

Ternary Bismuthide SrPtBi2: Computation and Experiment in Synergism to Explore Solid-State Materials

Notes on complexity of packing coloring

Ferromagnetism or slow paramagnetic relaxation in Fe-doped Li3​N?

NMR Study of the New Magnetic Superconductor CaK(Fe$0.951Ni0.049)4As4: Microscopic Coexistence of Hedgehog Spin-vortex Crystal and Superconductivity

SPH simulation of fuel drop impact on heated surfaces

Numerical study of natural convection states in a horizontal concentric cylindrical annulus using SPH method

Bulk electronic structure of non-centrosymmetric EuTGe3 (T= Co, Ni, Rh, Ir) studied by hard x-ray photoelectron spectroscopy

Provably Accurate Double-Sparse Coding

Diffuse X-ray-emitting Gas in Major Mergers

Steering the distribution of agents in mean-field and cooperative games

Analysis of a second order discontinuous Galerkin finite element method for the Allen-Cahn equation and the curvature-driven geometric flow

Emergence of a spectral gap in a class of random matrices associated with split graphs

A self-contained algorithm for determination of solid-liquid equilibria in an alloy system

Study of the X±(5568) state with semileptonic decays of the Bs0​ meson

Dynamic Game-based Maintenance Scheduling of Integrated Electric and Natural Gas Grids with a Bilevel Approach

Search for the Standard Model Higgs boson produced in association with top quarks and decaying into a bbˉ pair in pp collisions at s​ = 13 TeV with the ATLAS detector

Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector

Magnetoresistance in YBi and LuBi semimetals due to nearly perfect carrier compensation

Multivariate t-Mixtures-Model-based Cluster Analysis of BATSE Catalog Establishes Importance of All Observed Parameters, Confirms Five Distinct Ellipsoidal Sub-populations of Gamma Ray Bursts

Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at s​=13 TeV with the ATLAS detector

The obstacle problem for a fractional Monge--Ampère equation

Magnetic phase diagram of the iron pnictides in the presence of spin-orbit coupling: Frustration between C2​ and C4​ magnetic phases

Merging $K$ -means with hierarchical clustering for identifying general-shaped groups

Ferromagnetism or slow paramagnetic relaxation in Fe-doped Li $_{3}$ N?

Study of the $X^{\pm} (5568)$ state with semileptonic decays of the $B_{s}^{0}$ meson

Search for the Standard Model Higgs boson produced in association with top quarks and decaying into a $b b ˉ$ pair in $pp$ collisions at $s$ = 13 TeV with the ATLAS detector

Multivariate $t$ -Mixtures-Model-based Cluster Analysis of BATSE Catalog Establishes Importance of All Observed Parameters, Confirms Five Distinct Ellipsoidal Sub-populations of Gamma Ray Bursts

Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at $s = 13$ TeV with the ATLAS detector

Magnetic phase diagram of the iron pnictides in the presence of spin-orbit coupling: Frustration between $C_{2}$ and $C_{4}$ magnetic phases