bluuebunny/crossref_metadata_2025_split huggingface dataset:
The minimum covering signless laplacian energy of graph
Authors: Permi Kavita , Manasa H S , Geetha M C 
Published: August 2020

Abstract
Gutman [5]has come out with the idea of graph energy as summation of numerical value of latent roots of the adjacency matrix of the given graph Γ. In this paper, we introduce the Minumum Covering Signless Laplacian energy

L
C
+

E
(
Γ
)

of a graph Γ and obtain bounds for it. Also we find

L
C
+

E
(
Γ
)

of some important class of graphs.
FCM labeling of some graphs and its line graph
Authors: Arockiaraj S , Rajesh Kannan A , Manivannan P , Durai Baskar A 
Published: August 2020

Abstract
A function f is called an F-centroidal mean labeling of a graph G(V, E) with p vertices and q edges if f : V(G) → {1, 2, 3, …, q + 1} is injective and the induced function g* : E(G) →{1, 2, 3, …, q} defined as

g
*
(
u
v
)
=

⌊

2

[

f

(
u
)

2

+
f
(
u
)
f
(
v
)
+
f

(
v
)

2

]

3

[

f
(
u
)
+
f
(
v
)

]

⌋
,

for all

u
v
∈
E
(
G
)

, is bijective. A graph that admits an F-centroidal mean labeling is called an F-centroidal mean graph. The line graph is one among the graph operations. In this paper, we try to analyse that the line graph operation preserves the F-centroidal mean property for the path Pn
, the cycle Cn
, the star graph Sn
, the complete graph Kn
, the graph Pn
o S
1, the triangular snake graph Tn
and the arbitrary subdivision of S
3.
Magnetohydrodynamic chemically reactive Sisko liquid flow through a stretching surface with nonlinear thermal radiation
Authors: Nagendramma V 
Published: August 2020

Abstract
Present article reveals results of steady 2D magnetohydrodynamic boundary layer flow of a chemically reactive Sisko liquid due to a stretching surface with nonlinear thermal radiation. The governing equations are computed with R-K 4th order method with BVP4C technique. Numerical evaluations have been accomplished for disparate values of physical constraints with abet of delineates. Additionally, the coefficient of drag force, local Nusselt and Sherwood numbers have been evaluated for disparate parameters and scrutinized for engineering interest.
Edge fault tolerant Hamiltonicity in Brick product graphs
Authors: Sumithra Devi M R , Girisha A 
Published: August 2020

Abstract
A connected graph G is Hamiltonian laceable if there is a Hamiltonian path exists among any two nodes in G at an odd number distance. G is Hamiltonian-t-laceable if there is a Hamiltonian path among any two nodes u and v with d(u,v) = t. In this article we extend the Hamiltonian-t-laceability of Brick product C(2n,1,r) for even t, 2 ≤ t ≤ diamG with a fault tolerant edge.
Minimum dominating signless laplacian graph energy
Authors: Permi Kavita 
Published: August 2020

Abstract
Minimum dominating graph energy was proposed by Rajesh Kanna et al.[11] in 2013. I propose the Minumum dominating signless laplacian graph energy

L
D
+

E
(
Γ
)

in this paper. Also obtain some bounds and discuss some important graph classes for the minimum dominating signless Laplacian energy.
Ricci operator in a Hopf real Hypersurfaces of complex space form
Authors: Manjulamma Uppara , Nagaraja H G , Kiran Kumar D L 
Published: August 2020

Abstract
We initiate the study of real hypersurface of a complex space form and it is proved that Lie parallelism of the Ricci operator in the direction of ξ, locally symmetric Ricci operator in a real hypersurface of a complex space form reduce the hypersurface to Hopf hypersurface.
Mild solutions for a coupled system of fractional differential equations with slit-strips type integral boundary conditions
Authors: Buvaneswari K , Karthikeyan P 
Published: August 2020

Abstract
In this present paper, we study the existence and uniqueness of solutions for a coupled system of fractional differential equations with Banach contraction mapping principle and Leray-Schauder alternative theorem. Examples are given to illustrate the applicability of the obtained results.
Buoyant convective transport of nanofluids in a non-uniformly heated annulus
Authors: Keerthi Reddy N , Sankar M. 
Published: August 2020

AbstractThis paper reports the influence of non-uniform thermal conditions on buoyancy-driven convection of water based nanofluids in a cylindrical annulus. Annular geometry is formed by two upright co-axial cylinders. In this analysis, two different non-uniform temperature profiles are applied at bottom boundary, while the side boundaries are kept at lower temperature and top boundary is taken as thermally insulated. For the first case, the bottom boundary is sinusoidally heated, while linear thermal profile is applied in the second case. The annular gap is filled with water based nanofluids with copper nanoparticle. Using ADI based finite difference technique, the model equations are solved for vast range of parametric values. Numerical simulation results reveal the bi-cellular flow pattern for both non-uniform thermal conditions at all range of Rayleigh numbers. Further, the heat transport rates are highly sensitive to non-uniform conditions supplied at the bottom wall. The results of this analysis could be utilized for applications involving non-uniform thermal conditions in an annular geometry.
Droplets of quark gluon plasma: PHENIX results on small systems at RHIC
Authors: Belmont R. 
Published: August 2020

Abstract
In these proceedings we discuss PHENIX results on small systems at RHIC, specifically those relating to collectivity and flow. We discuss the small systems geometry scan, which comprises collisions of p+Au, d+Au, and 3He+Au at

S

N
N

=
200

GeV

and is designed to exploit differences in intrinsic geometry. We also discuss the small systems beam energy scan, which comprises d+Au collisions at

S

N
N

=
200

GeV

, 62.4 GeV, 39 GeV, and 19.6 GeV and is designed to explore differences in system size and lifetime while keeping the geometry fixed. We find the data in nearly all cases are well-described by hydrodynamical calculations involving a QGP phase, suggestion formation of QGP droplets in a wide variety of collisions.
Production of hadronic resonances measured with ALICE at the LHC
Authors: Song Jihye 
Published: August 2020

Abstract
Measurements of short-lived hadronic resonances are used to probe the properties of the hadronic phase in ultra-relativistic heavy-ion collisions. Since these resonances have lifetimes comparable to that of the produced fireball, they are sensitive to the competitive rescattering and regeneration effects in the hadronic gas, which modify the observed particle momentum distributions and yields after hadronization. Having different masses, quantum numbers, and quark content, hadronic resonances can provide insight into processes that determine the shapes of particle momentum spectra, strangeness production, and the possible onset of collective effects in small systems.
We here present the latest results on ρ(770)0, K*(892), φ(1020), Σ(1385)±, Λ(1520), Ξ(1530)0 and Ξ(1820) production in pp, p–Pb, Pb–Pb and Xe–Xe collisions at different LHC energies. Results include system-size and collision-energy evolution of transverse momentum spectra, integrated yields, mean transverse momenta, particle ratios, and nuclear modification factors.
Exploring the QCD phase diagram via the collision energy dependence of multi-particle femtoscopy with PHENIX
Authors: Csanád Máté 
Published: August 2020

Abstract
Exploration of the rich structure of the QCD phase diagram is an important topic in the RHIC heavy ion program. One of the ultimate goals of this program is to search for the critical endpoint. Investigation of the space-time structure of hadron emissions at various phase transition points using Bose-Einstein correlations of identical bosons may provide insight on the location of the critical endpoint. PHENIX has performed comprehensive measurements of the Bose-Einstein correlation in Au+Au collisions at

S

N
N

=
15

, 19, 27, 39, 62.4, and 200 GeV, where we incorporated Lévy-type source functions to describe the measured correlation functions. We put particular focus on one of the parameters of the Lévy-type source functions, the index of stability α, which is related to one of the critical exponents (the so-called correlation exponent ɳ). We have measured its collision energy and centrality dependence. We have also extended our analysis from two-particle to three-particle correlations to characterize the nature of the hadron emission source. The three particle correlations confirmed the findings of the two-particle correlations, and also provide insight on the pion production mechanism beyond the core-halo model.
Characterizing the medium created in Pb–Pb collisions at

SNN=2.76TeV

by means of the evolution of two-particle transverse momentum correlations
Authors: González Víctor 
Published: August 2020

Abstract
Two-particle correlations are powerful tools for studying the medium produced in heavy-ion collisions. In particular, two-particle transverse momentum correlations enable measurements of the collision dynamics sensitive to momentum currents. Their evolution with collision centrality, which is related to the system lifetime, provides information about the shear viscosity, ɳ/S, and the system relaxation time,

τ
π

. We report on measurements of two-particle transverse momentum correlations as a function of centrality in Pb-Pb collisions using the ALICE detector at the LHC. The centrality dependence of the near-side peak of the correlation function, particularly in the longitudinal dimension, provides information about the shear viscosity and the system relaxation time of the produced medium. The data are compared to predictions from selected Monte Carlo models. The charge independent momentum correlator exhibits a longitudinal broadening from peripheral to central collisions that is qualitatively consistent with expectations from a model with viscous effects. We will discuss an interpretation of the observed broadening in the context of this model.
Exploring the partonic phase at finite chemical potential in and out-of equilibrium
Authors: Soloveva O. , Moreau P. , Oliva L. , Song T. , Cassing  , Bratkovskaya E. 
Published: August 2020

Abstract
We study the influence of the baryon chemical potential μB
on the properties of the Quark–Gluon–Plasma (QGP) in and out-of equilibrium. The description of the QGP in equilibrium is based on the effective propagators and couplings from the Dynamical QuasiParticle Model (DQPM) that is matched to reproduce the equation-of-state of the partonic system above the deconfinement temperature Tc
from lattice Quantum Chromodynamics (QCD). We calculate the transport coefficients such as the ratio of shear viscosity ɳ and bulk viscosity ¶ over entropy density s, i.e., η/s and ¶/s in the (T, μB
) plane and compare to other model results available at μB
= 0. The out-of equilibrium study of the QGP is performed within the Parton–Hadron–String Dynamics (PHSD) transport approach extended in the partonic sector by explicitly calculating the total and differential partonic scattering cross sections (based on the DQPM propagators and couplings) evaluated at the actual temperature T and baryon chemical potential μB
in each individual space-time cell of the partonic scattering. The traces of their μB
dependences are investigated in different observables for relativistic heavy-ion collisions with a focus on the directed and elliptic flow coefficients

υ
1

,

υ
2

in the energy range 7.7 GeV ≤

S

N
N

≤
200

GeV

.
3-Dimensional QCD Phase Diagrams for Strange Matter
Authors: Dexheimer V. , Aryal K. , Constantinou C. , Peterson J. , Farias R. L. S. 
Published: August 2020

Abstract
In this work, we examine in detail the difference between constraining the electric charge fraction and isospin fraction when calculating the deconfinement phase transition in the presence of net strangeness. We present relations among charge and isospin fractions and the corresponding chemical potentials and draw 3-dimensional QCD phase diagrams for matter out of weak equilibrium. Finally, we briefly discuss how our results can be applied to comparisons of matter created in heavy ion collisions and binary neutron star mergers.
Dilepton measurements with the ALICE experiment at the LHC
Authors: Meninno Elisa 
Published: August 2020

Abstract
The production of low-mass dielectrons and dimuons is a powerful tool for the understanding of the properties of the quark–gluon plasma (QGP) created in ultra-relativistic heavy-ion collisions. Since such pairs do not interact strongly and are emitted during all stages of the collisions, they provide information about the full time evolution and dynamics of the medium created. Measurements in pp and p–Pb collisions are the necessary reference for heavyion studies. In addition, they can be used to extract charm and beauty cross sections.
In this contribution, we present the latest measurements of e
+
e
− and µ
+
µ
− pair production in pp, p–Pb and Pb–Pb collisions performed by ALICE at different energies.
Far From Equilibrium Hydrodynamics and the Beam Energy Scan
Authors: Dore Travis , McLaughlin Emma , Noronha-Hostler Jacquelyn 
Published: August 2020

Abstract
The existence of hydrodynamic attractors in rapidly expanding relativistic systems has shed light on the success of relativistic hydrodynamics in describing heavy-ion collisions at zero chemical potential. As the search for the QCD critical point continues, it is important to investigate how out of equilibrium effects influence the trajectories on the QCD phase diagram. In this proceedings, we study a Bjorken expanding hydrodynamic system based on DMNR equations of motion with initial out of equilibrium effects and finite chemical potential in a system with a critical point. We find that the initial conditions are not unique for a specific freeze-out point, but rather the system can evolve to the same final state freeze-out point with a wide range of initial baryon chemical potential, µB
. For the same initial energy density and baryon density, depending on how far out of equilibrium the system begins, the initial µB
can vary by ΔµB
∼ 350 MeV. Our results indicate that knowledge of the out-of-equilibrium effects in the initial state provide vital information that influences the search for the QCD critical point.
Recent results on light (anti-)nuclei production with ALICE at the LHC
Authors: Bartsch Esther 
Published: August 2020

Abstract
The high-statistics and high-quality data samples in pp, p–Pb and Pb–Pb collisions at various collision energies collected by the ALICE Collaboration, and the excellent tracking and particle identification capabilities of the Inner Tracking System, the Time-Projection Chamber and the Time-of-Flight detector allow for the detection of rarely produced light (anti-)(hyper-)nuclei. The first (anti-)triton p
T spectra in Pb–Pb at the LHC as well as the first (anti-)4He p
T spectra are presented. Moreover, the p
T-integrated production yield ratios of deuteron over proton as well as 3He and triton over proton as a function of charged-particle multiplicity are shown. In addition coalescence parameters B
2 and B
3 as a function of p
T/A and charge particle multiplicity for several collision systems and energies are discussed. Furthermore, light-nuclei radial and elliptic flow are presented and compared to the flow of lighter particles. These various results are compared with statistical hadronization and coalescence model predictions to provide insight in the production mechanism of light (anti-)nuclei in heavy-ion collisions.
Sea Quark Chemistry and Correlations in the Initial Conditions of Heavy Ion Collisions
Authors: Sievert Matthew D. 
Published: August 2020

Abstract
QCD dynamics are directly studied in two different but intersecting contexts: high-temperature QCD in heavy-ion collisions and zero-temperature hadronic structure in electron-hadron collisions. The approaches to high-energy nuclear physics in these two contexts are very different, however, and bringing the two fields into dialogue can reveal new opportunities. In this paper I highlight one interesting intersection between the two: leveraging the sea quark chemistry of the proton to study charge transport in top-energy heavy-ion collisions.
From small to large x: toward a unified description of high energy collisions
Authors: Jalilian-Marian Jamal 
Published: August 2020

Abstract
Inclusive particle production at high pt
(equivalently intermediate to large x) in high energy hadronic collisions is successfully described by perturbative QCD, using the collinear-factorization formalism. On the other hand at very high energies and not so high pt
the Color Glass Condensate (CGC) formalism has been quite successful in describing particle production at small Bjorken x. Here we propose a way to unify the two approaches which enables one to apply it to particle production at all x (all pt
).
Magnetic effects of QCD parameters from fnite energy sum rules
Authors: Villavicencio Cristián , Dominguez C. A. , Loewe M. 
Published: August 2020

Abstract
One of the advantages of the fnite energy sum rules is the fact that every operator in the operator product expansion series can be selected individually by the use of an appropriate kernel function which removes other operator poles. This characteristic is maintained by QCD systems in the presence of external homogeneous magnetic feld, providing interesting information about the magnetic evolution of QCD and hadronic parameters. In this work fnite energy sum rules are applied on QCD in the light quark sector, combining axial and pseudoscalar channels in the presence of an external homogeneous magnetic feld, obtaining the magnetic evolution of the light quark masses, pion mass, the pion decay constant, the gluon condensate and the continuum hadronic threshold.
PHENIX Results on

J/ψ

Production in p+Al, p+Au and 3He+Au Collisions
Authors: Frawley Anthony D 
Published: August 2020

Abstract
Results are presented of measurements of the

J
/
ψ

modification in p+Au, d+Au and 3He+Au collisions at forward and backward rapidity

(

1.2
<
|
y
|
<
2.2

)

by the PHENIX experiment. The rapidity, transverse momentum and collision centrality dependence of the modifications are presented, and compared between the three light projectile collision systems. The modification for p+Al is found to be small. For p+Au it is depends strongly on collision centrality at forward rapidity. In both cases models describe the data well. The modifications for d+Au and 3He+Au are very similar to those for p+Au, although there is a hint of slightly increased suppression for 3He+Au over p+Au at backward rapidity.
Analysis and improvement of a mathematical turbine model
Authors: Reines A F , Svingen B 
Published: August 2020

Abstract
A mathematical turbine model is necessary for dynamic and transient analysis of hydro power plants, also in the early stages of a project. Such models can be based on a first principles approach or on empirical data, many models are a combination. A first principles approach is practical when specific laboratory data are unavailable, for example in the design phase of a new plant. These models can easily be simplified and linearized without losing physical correctness or generality, even though accuracy may vary when applied to a specific system.
The model studied in this work, was developed several years ago from the Euler turbine equation and the opening degree definition, and has later been modified and linearized for simple implementation into simulation software. The model captures losses for varying rotational speed quite well, but struggles to capture losses for varying flow rate. The hydraulic efficiency is over-predicted for flow far off the design point, because irreversible hydraulic loss phenomena such as 3D turbulence and dissipation are not inherently included in this 1D model. Empirical relations or Hill charts for exact fit to a measured turbine can be included, however generality is then lost.
This paper analyzes and discusses the mathematical model compared to laboratory measurements, highlighting its performance in predicting the efficiency off best efficiency point (BEP). A mathematical improvement based on turbine data is presented and implemented for three specific Francis turbines. The possibility to generalize the procedure is also discussed.
Technical investigation of Nepalese electricity market – A review
Authors: Sanjel Nawaraj , Baral Bivek 
Published: August 2020

Abstract
The article reviews the options of renewable energy technologies with the background of long-lasting power shortages that Nepal has been facing and examines the energy-related policies of Nepal and provisions to promote renewable energy technologies in Nepal and its regulatory framework. It analyses the pertinent energy policies related to energy generation and distribution. The research focuses on the context of the renewable energy sector of Nepal and its future. The research has found a positive role in renewable energy policies for adoption of renewable energy technologies and poses a positive impact on electricity generation. The article has also reviewed and analyzed the trend of electricity generation, peak demand and the resulted import to meet the gap. The almost linear electricity generation of Nepal Electricity Authority (including generation of Individual Power Producers against the steep gradient of peak power demand has ultimately increased the power purchase from India pushing towards unsustainability. It shows that energy policies are not up to the optimal. The research has further analyzed the impact of per capita GDP on electricity per capita by regression analysis. The analysis has found, higher the GDP per capita would increase the consumption of electricity per capita. The paper discusses issues and barriers for promotion of rural electrification and suggested economical, technical and geographical to be the three most pertinent barriers in developing countries.
An Experimental Investigation of PAT in Direct and Reverse Mode at Turbine Testing Lab
Authors: Rimal Samita , Sah Sanjay Pd. , Pokharel Nischal , Thapa Biraj Singh 
Published: August 2020

Abstract
PAT is typically employed as the electromechanical component, especially in the rural communities of developing countries in order to reduce the initial cost of a power plant. In the context of Nepal, there have been few researches about its feasibility but have given promising outcomes regarding its implementation. As a part of this continuation, this paper deals with the experimentation performed on end suction, KDS-520+ centrifugal pump of 3.5 kW on direct as well as reverse mode to study its performances. The main purpose of this study was to test the characteristic performance of the pump in turbine as well as pump mode to compare the variation in their efficiency in laboratory environment so as to shed light upon the importance of PAT in micro and mini hydropower and to study the prospect of replacing traditional water mills with PAT. The test rig for the operation of pump in turbine mode was developed as a part of the research and characteristic curves have been plotted on different flow rates. The efficiency of the centrifugal pump was found similar to the rated efficiency, 60.85% at the best efficiency point at the head of 17m and discharge of 17lps. In addition, performance of the same pump in turbine mode showed a maximum efficiency of 40.15% at flow of 11.5lps and head 10m which concluded that the centrifugal pump can operate in turbine mode without any modifications.