cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Massive black hole binary inspiral and spin evolution in a cosmological framework
Creators: name: Sayeb, Mohammad
name: Blecha, Laura
name: Kelley, Luke Zoltan
name: Gerosa, Davide
name: Kesden, Michael
name: Thomas, July
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Massive black hole (MBH) binary inspiral time scales are uncertain, and their spins are even more poorly constrained. Spin misalignment, along with unequal mass ratios and spin magnitudes, introduces asymmetry in the gravitational radiation, which imparts a recoil kick to the merged MBH. Understanding how MBH binary spins evolve is crucial for determining their recoil velocities, their gravitational wave (GW) waveforms detectable with LISA, as well as their post-merger retention rate in galaxies and thus their subsequent merger rate. Here we present a novel study that introduces a sub-resolution model for gas- and GW-driven MBH binary spin evolution using a population of accreting MBHs from the Illustris cosmological hydrodynamics simulations. We also model sub-resolution binary inspiral via dynamical friction, stellar scattering, viscous gas drag, and GW emission. Our model assumes differential accretion, which causes greater alignment of the secondary MBH spin in unequal-mass mergers. We find that 47% of the MBHs in our population merge by $z=0$. Of these, 19% have misaligned primaries and 10% have misaligned secondaries at the time of merger in our (conservative) fiducial model. The MBH misalignment fraction depends strongly on the accretion disc parameters, however. Reducing accretion rates by a factor of 100, in a thicker disc, yields 79% and 42% misalignment for primaries and secondaries, respectively. Even in the fiducial model, more than 12% of binaries experience recoils of $>500$ km s$^{-1}$, which could displace them at least temporarily from galactic nuclei. We additionally find that a significant number of systems experience strong precession.
description: 16 pages, 11 Figures
X-ray Lighthouses of the High-Redshift Universe. II. Further Snapshot Observations of the Most Luminous z>4 Quasars with Chandra
Creators: name: Vignali, C.
name: Brandt, W. N.
name: Schneider, D. P.
name: Kaspi, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on Chandra observations of a sample of 11 optically luminous (Mb4 quasars known and hence represent ideal witnesses of the end of the "dark age ''. Nine quasars are detected by Chandra, with ~2-57 counts in the observed 0.5-8 keV band. These detections increase the number of X-ray detected AGN at z>4 to ~90; overall, Chandra has detected ~85% of the high-redshift quasars observed with snapshot (few kilosecond) observations. PSS 1506+5220, one of the two X-ray undetected quasars, displays a number of notable features in its rest-frame ultraviolet spectrum, the most prominent being broad, deep SiIV and CIV absorption lines. The average optical-to-X-ray spectral index for the present sample (=-1.88+/-0.05) is steeper than that typically found for z>4 quasars but consistent with the expected value from the known dependence of this spectral index on quasar luminosity. We present joint X-ray spectral fitting for a sample of 48 radio-quiet quasars in the redshift range 3.99-6.28 for which Chandra observations are available. The X-ray spectrum (~870 counts) is well parameterized by a power law with Gamma=1.93+0.10/-0.09 in the rest-frame ~2-40 keV band, and a tight upper limit of N_H~5x10^21 cm^-2 is obtained on any average intrinsic X-ray absorption. There is no indication of any significant evolution in the X-ray properties of quasars between redshifts zero and six, suggesting that the physical processes of accretion onto massive black holes have not changed over the bulk of cosmic time.
description: 15 pages, 7 figures, accepted for publication in AJ
Bayesian deep learning for dark energy
Creators: name: Escamilla-Rivera, Celia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we discuss basic ideas on how to structure and study the Bayesian methods for standard models of dark energy and how to implement them in the architecture of deep learning processes.
description: Invited chapter for "Cosmology 2020 - The Current State" book
Effective electron-phonon coupling and polaronic transition in the presence of strong correlation
Creators: name: Barone, P.
name: Raimondi, R.
name: Capone, M.
name: Castellani, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Hubbard-Holstein model using slave-boson mean-field and a variation al Lang-Firsov transformation. We identify weak and strong e-ph coupling solutions, whose stability depends both on the bare e-ph coupling and on the correlation strength. At mean field level the evolution from weak to strong electron-phonon coupling occurs via a first-order polaronic transition if the adiabatic parameter is below a critical value. In the strongly correlated regime and in the adiabatic limit, the region in which the weak-coupling solution is stable is sizeably enlarged with respect to the weakly correlated system and the Mott metal-insulator transition is found to be robust with respect to e-ph interaction.
description: 6 pages, 2 figures
Simple derivation of general Fierz-type identities
Creators: name: Nishi, C. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: General Fierz-type identities are examined and their well known connection with completeness relations in matrix vector spaces is shown. In particular, I derive the chiral Fierz identities in a simple and systematic way by using a chiral basis for the complex $4\times4$ matrices. Other completeness relations for the fundamental representations of SU(N) algebras can be extracted using the same reasoning.
description: 9pages. Few sentences modified in introduction and in conclusion. Typos corrected. An example added in introduction. Title modified
Modern Technology-Driven Financial Reporting vs. Traditional Methods_ Cost Optimization in the.pdf
Creators: name: Umer Shaikh, Muhammad Waqas
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 350199
subject: Accounting, auditing and accountability not elsewhere classified
classificationCode: 350103
subject: Financial accounting

description: Financial reporting plays an important role in establishing a company's business goals and regulatory compliance. For many years, organizations employed traditional processes for creating financial reports, primarily by hand, which, while results-oriented, took a long time to complete and may occasionally contain some amount of mistake. Modern technology has changed this environment by offering several automated and data-driven solutions that significantly increase process efficiency and clarity. This study intends to compare the efficiency of modern technologically improved financial reporting processes versus traditional techniques, with an emphasis on cost in the GCC dairy sector. In contrast, the core and important areas of productivity, technology development, cost-effectiveness, and service improvement are intended to be facilitated by comparative analysis, service comparisons, case studies, and quantitative measurement instruments. This study analyzes real-life GCC dairy enterprises to illustrate how advanced technology improves the value of financial reporting, reduces organizational expenditures, and boosts organizational performance. The study highlights the possibility for current reporting techniques to match with global practice, giving a competitive edge in the international market while simultaneously allowing for the sustainable use of resources in concentrated sectors. This study benefits policymakers, industry participants, and financial managers by making recommendations for the use of technology in the compilation of more thorough financial reports. It highlights topics for investigation and offers concrete, doable recommendations for enhancing the advancements of the supplemental and effective reporting system in the dairy industry as well as other business sectors.
Deep Hubble Space Telescope/ACS Observations of I Zw 18: a Young Galaxy in Formation
Creators: name: Izotov, Y. I.
name: Thuan, T. X.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present V and I photometry of the resolved stars in the most metal-deficient blue compact dwarf galaxy known, I Zw 18 (Zsun/50), using Hubble Space Telescope/Advanced Camera for Surveys (ACS) images, the deepest ones ever obtained for this galaxy. The resulting I vs. V-I color-magnitude diagram (CMD) reaches limiting magnitudes V=I=29 mag. It reveals a young stellar population of blue main-sequence (MS) stars (age <30 Myr) and blue and red supergiants (10 Myr
description: 29 pages, 13 Postscript figures, accepted for publication in the Astrophysical Journal
Non - International Conflicts:The Case of Libya
Creators: name: Antyras, Alexandros Konstantinos Athanasopoulos
Publisher: name: figshare
Year: 2020
Subjects: subject: 160607 International Relations
subject: FOS: Political science
subject: 180116 International Law (excl. International Trade Law)
subject: FOS: Law

description: Dated many decades back, the struggle in Libya’s’ territory has been more than conspicuous.
From the coup of 1969, to Colonel Mummar Gaddafi’s fall and the Libyan civil war, there have been countless changes in the participating groups and actors, as well as the
military and political stance. In the last six years, the particular non- international conflict taking place in the country with groups and states forming and shifting
alliances has resulted in an chaotic battlefront in multiple sites, as the Human Rights Watch suggests . The most concerning result of this situation, could not be other than the concern for the countless arm-less people caught in the battlefields or mistreated by the parties.
Digital replacing analog: Integration of CAD within architectural design process
Creators: name: Abdalla, Salem Buhashima
Publisher: name: figshare
Year: 2020
Subjects: subject: 120302 Design Innovation
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 120304 Digital and Interaction Design
subject: 120307 Visual Communication Design (incl. Graphic Design)

description: This paper explores the integration of computer-aided design (CAD) into the architectural design process. The aim was to examine the potential impact of digital media on the design process as a whole. Therefore by categorizing the architecture design process into three main stages, a theoretical approach and a qualitative analysis survey were utilized to identify the role of CAD during the design process. The outcome showed that digital tools have come a long way to revolutionize the architecture design process and enhance designer‟s creativity, with minor pitfalls and hurdles experienced mainly in the early design ideation and conceptualization process.
An unusual eigenvalue problem
Creators: name: Bizoń, Piotr
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss an eigenvalue problem which arises in the studies of asymptotic stability of a self-similar attractor in the sigma model. This problem is rather unusual from the viewpoint of the spectral theory of linear operators and requires special methods to solve it. One of such methods based on continued fractions is presented in detail and applied to determine the eigenvalues.
Post-school quality of life of individuals with complex communication needs
Creators: name: Hamm, Bruce
Publisher: name: University of British Columbia
Year: 2009

description: Documenting post-school outcomes is a critical step in ensuring "that schools prepare young people to live productive, satisfying lives" (British Columbia Ministry of Education, 2003). The construct of quality of life (QOL) represents a broad-based measure of post-school outcomes. Although augmentative and alternative (AAC) interventions may enhance the communication skills and educational achievements of students with complex communication needs while they are in school, there is no guarantee that these gains will be maintained following students' transition to adult life. Unfortunately, information on the post-school QOL and related outcomes of individuals with complex communication needs is scarce. This study addressed this lack of information by examining the post-school outcomes of eight individuals with complex communication needs who used AAC in British Columbia schools and transitioned to adult life in the past 5 years. Outcomes for the participants were documented in the areas of (1) QOL, (2) important life domains (e.g., employment, education, living circumstances, etc.), and (3) communication satisfaction and modes of communication. Two surveys were used to compile the data: the Quality of Life Profile: People with Physical and Sensory Disabilities (Renwick et al., 1998) and a Communication Survey that was modeled after Slesaransky-Poe's (1997) Consumer Survey on Communicative Effectiveness but designed specifically for this study. Four of the participants and people who knew them best (e.g., family members) also participated in brief interviews in which they discussed the positive and negative aspects of their school and post-school experiences. The results are presented in the form of individual stories designed to summarize the unique past and present experiences of each participant. While there was considerable variation across the participants' QOL scores, their outcomes in important life domains were generally not encouraging. Participants who achieved, relatively higher outcomes were distinguished on the basis of their communication satisfaction as well as indicators of communicative competence. However, the majority of participants and their supporters were very dissatisfied with the lack of services that were available to them, especially in the area of AAC. The results are discussed in relation to outcomes for adults with development disabilities in the AAC and Canadian QOL literature. Implications for future AAC research, practice, and advocacy efforts are identified.
Interference Effects on Kondo-Assisted Transport through Double Quantum Dots
Creators: name: Tanaka, Yoichi
name: Kawakami, Norio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We systematically investigate electron transport through double quantum dots with particular emphasis on interference induced via multiple paths of electron propagation. By means of the slave-boson mean-field approximation, we calculate the conductance, the local density of states, the transmission probability in the Kondo regime at zero temperature. It is clarified how the Kondo-assisted transport changes its properties when the system is continuously changed among the serial, parallel and T-shaped double dots. The obtained results for the conductance are explained in terms of the Kondo resonances influenced by interference effects. We also discuss the impacts due to the spin-polarization of ferromagnetic leads.
description: 9 pages, 11 figures ; minor corrections and references added
Impurity-Induced Anomalous Thermal Hall Effect in Chiral Superconductors
Creators: name: Ngampruetikorn, Vudtiwat
name: Sauls, J. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Chiral superconductors exhibit novel transport properties that depend on the topology of the order parameter, topology of the Fermi surface, the spectrum of bulk and edge Fermionic excitations, and the structure of the impurity potential. In the case of electronic heat transport, impurities induce an anomalous (zero-field) thermal Hall conductivity that is easily orders of magnitude larger than the quantized edge contribution. The effect originates from branch-conversion scattering of Bogoliubov quasiparticles by the chiral order parameter, induced by potential scattering. The former transfers angular momentum between the condensate and the excitations that transport heat. The anomalous thermal Hall conductivity is shown to depend to the structure of the electron-impurity potential, as well as the winding number, $ν$, of the chiral order parameter, $Δ(p)=|Δ(p)|\,e^{iνϕ_{p}}$. The results provide quantitative formulae for interpreting heat transport experiments seeking to identify broken T and P symmetries, as well as the topology of the order parameter for chiral superconductors.
description: 5 pages, 5 figures. arXiv admin note: text overlap with arXiv:1911.06299
The Architecture, Engineering and Construction (AEC) paradigm shift: Building Information Modelling trend in the United Arab Emirates
Creators: name: Abdalla, Salem Buhashima
Publisher: name: figshare
Year: 2020
Subjects: subject: 120101 Architectural Design
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 120201 Building Construction Management and Project Planning
subject: FOS: Civil engineering
subject: 129999 Built Environment and Design not elsewhere classified

description: This study investigated the current Building Information Modelling (BIM) trends and practices in the UAE, particularly to shed light on a recently circulated Dubai BIM mandate. Two sets of surveys were mailed to the AEC industry and the corresponding academic sector within the UAE to collect up-to-date data on BIM awareness and utilization. The surveys showed startling results concerning the academic sector in the UAE where almost 70% of respondents were not aware of the BIM mandate. Among the rest, even when aware, the majority of mechanical and electrical engineering schools felt that BIM is not pertinent to their discipline. Therefore, the response to offering BIM in their curriculum was substantially low (35%). On the other hand, the industrial survey identified a large majority (76.5%) of the AEC industry in the UAE are using BIM. The results clearly indicate that the academia should include BIM in their curriculum to produce qualified graduates to support the market. However, the academia is also faced with several obstacles to implement BIM in their curriculum, where the main pretext is that there is “no room for new courses in existing curriculum”.
Self-consumption for energy communities in Spain: a regional analysis under the new legal framework
Creators: name: Gallego-Castillo, Cristobal
name: Heleno, Miguel
name: Victoria, Marta
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: European climate polices acknowledge the role that energy communities can play in the energy transition. Self-consumption installations shared among those living in the same building are a good example of such energy communities. In this work, we perform a regional analysis of optimal self-consumption installations under the new legal framework recently passed in Spain. Results show that the optimal sizing of the installation leads to economic savings for self-consumers in all the territory, for both options with and without remuneration for energy surplus. A sensitivity analysis on technology costs revealed that batteries still require noticeably cost reductions to be cost-effective in a behind the meter self-consumption environment. In addition, solar compensation mechanisms make batteries less attractive in a scenario of low PV costs, since feeding PV surplus into the grid, yet less efficient, becomes more cost-effective. An improvement for the current energy surplus remuneration policy was proposed and analysed. It consists in the inclusion of the economic value of the avoided power losses in the remuneration.
description: Submitted version. 23 pages, 8 figures
Vortex lattice in rotating neutron spin-triplet superfluid
Creators: name: Leinson, Lev B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In the Ginzburg-Landau limit, a possible texture without singular cores in a rotating neutron spin-triplet superfluid is studied. It is constructed the lattice of non-singular vortices with a vorticity diffusely distributed over the entire unit cell. The upper limit of the free energy associated with this structure is estimated, and the result shows that non-singular vortices are more preferable in the core of rotating neutron stars than ordinary linear singular vortices. The order parameter of the studied neutron system belongs to the unitary class. This implies that the superfluid under consideration does not have spin polarization and the core-less $^{3}$P$_{2}$ vortices do not have magnetization, which makes electron scattering by vortices ineffective. For the same reason, pinning with flux tubes is also suppressed. This can affect the hydrodynamics of superfluid neutron stars.
description: 7 pages, 5 figures
Existence of $C^{1,1}$ critical sub-solutions of the Hamilton-Jacobi equation on compact manifolds
Creators: name: Bernard, Patrick
Publisher: name: arXiv
Year: 2005
Subjects: subject: Dynamical Systems (math.DS)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove the existence of a critical subsolution of the Hamilton-Jacobi equation which is differentiable with Lipschitz differential, improving a previous result of Fathi and Siconolfi. This text is a consolidated version with a minor mistake corrected from the published version.
Charging into the Blend Wall: Conjoint Analysis of Consumer Willingness to Pay for Ethanol Blend Fuels
Creators: name: Aguilar, Francisco X.
name: Thompson, Wyatt
name: Aguilar, Francisco X.
name: Thompson, Wyatt
Publisher: name: Unknown
Year: 2010
Subjects: subject: Consumer/Household Economics
subject: Environmental Economics and Policy
subject: Production Economics
subject: Ethanol blend fuels
subject: consumers’ willingness to pay
subject: choice-based model

description: Ethanol use in the U.S. rose sharply in recent years due to public policy and a spike in petroleum prices, and remains high. Public support for ethanol includes mandated minimum levels of use nationwide. However, rather little is known about consumer demand for ethanol and much less about demand by type of blend and ethanol source. We used trial survey data and conjoint analysis to overcome the lack of historical data on consumers’ preferences for ethanol blend fuels. Preliminary findings based on responses from vehicle drivers in Missouri suggest that price is the primary factor behind fuel preferences. The disclosure of ethanol originated from woody feedstocks had a significant effect on preferences ceteris paribus. Ethanol blends of 20 percent had a negatively non-significant statistical effect compared to no-ethanol fuels or those with a 10 percent content. These findings will be tested using different models expanded to a nationwide pool of motor vehicle drivers.
Shape-preserving beam transmission through non-Hermitian disordered lattices
Creators: name: Tzortzakakis, A. F.
name: Makris, K. G.
name: Rotter, S.
name: Economou, E. N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the propagation of Gaussian beams through optical waveguide lattices characterized by correlated non-Hermitian disorder. In the framework of coupled mode theory, we demonstrate how the imaginary part of the refractive index needs to be adjusted to achieve perfect beam transmission, despite the presence of disorder. Remarkably, the effects of both diagonal and off-diagonal disorder in the waveguides and their couplings can be efficiently eliminated by our non-Hermitian design. Waveguide arrays thus provide an ideal platform for the experimental realization of non-Hermitian phenomena in the context of discrete photonics.
description: 7 pages, 5 figures
The experience of child soldiers from a resilience perspective
Creators: name: Cabrales, Liliana Cortes
Publisher: name: University of British Columbia
Year: 2009

description: More than 300,000 children under 18 - girls and boys - are fighting as soldiers with government armed forces and armed opposition groups in more than 30 countries worldwide. These children not only witness, but are also forced to perpetrate atrocities to other human beings. Although the study of childhood trauma has focused on the prevalence of post-traumatic stress disorder (PTSD) and its impact on children's development, the study of children who do not exhibit trauma-related symptoms after experiencing the same conditions has been overlooked in the social sciences. These children embody the healing nature of human beings, a ray of hope for societies that fail to protect their children, and an enriching perspective on what is known about trauma. The ability to bounce back and function adaptively after facing traumatic events has been defined in the literature as resilience. The purpose of this qualitative study was to identify and understand some of the mechanisms and resources that these children draw upon to overcome adversity. The research question was "what factors help prevent and overcome the effects of war trauma on child-soldiers?" Resilience was operationalized as the absence of psychopathology, and child soldiers were those who fell under the Optional Protocols to the Convention on the Rights of the Child on the involvement of children in armed conflict (2000). The data was collected through lifeline review and semi-structured interviews. A sample of six child soldiers was recruited through purposive sampling techniques. Six narrative themes emerged after analyzing the stories using a collaborative narrative analysis. In order of significance they are: (a) sense of agency (n=6); (b) social intelligence, empathy, and affect regulation (n=6); (c) shared experience, care giving figures, and community response (n=5); (d) sense of future, hope, and growth (n=5); (e) spirituality (n=4), and (f) morality (n=4). Finally, recommendations for reintegration programs and for the field of counselling psychology are presented.
Attojoule calorimetry of mesoscopic superconducting loops
Creators: name: Bourgeois, O.
name: Skipetrov, S. E.
name: Ong, F.
name: Chaussy, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the first experimental evidence of nontrivial thermal behavior of the simplest mesoscopic system - a superconducting loop. By measuring the specific heat C of an array of 450,000 noninteracting aluminum loops with very high accuracy of ~20 fJ/K, we show that the loops go through a periodic sequence of phase transitions (with period of an integer number of magnetic flux quanta) as the magnetic flux threading each loop is increased. The transitions are well described by the Ginzburg-Landau theory and are accompanied by discontinuities of C of only several thousands of Boltzmann constants k_B.
description: RevTeX, 4 pages, 4 figures
Mapping the inhomogeneous Universe with Standard Sirens: Degeneracy between inhomogeneity and modified gravity theories
Creators: name: Kalomenopoulos, Marios
name: Khochfar, Sadegh
name: Gair, Jonathan
name: Arai, Shun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The detection of gravitational waves (GWs) and an accompanying electromagnetic (E/M) counterpart have been suggested as a future probe for cosmology and theories of gravity. In this paper, we present calculations of the luminosity distance of sources taking into account inhomogeneities in the matter distribution that are predicted in numerical simulations of structure formation. In addition, we show that inhomogeneities resulting from clustering of matter can mimic certain classes of modified gravity theories, or other effects that dampen GW amplitudes, and deviations larger than $δν\sim \mathcal{O}(0.1)\ (99\%\ \rm{C.L.})$ to the extra friction term $ν$, from zero, would be necessary to distinguish them. For these, we assume mock GWs sources, with known redshift, based on binary population synthesis models, between redshifts $z=0$ and $z=5$. We show that future GW detectors, like Einstein Telescope or Cosmic Explorer, will be needed for strong constraints on the inhomogeneity parameters and breaking the degeneracy between modified gravity effects and matter anisotropies by measuring $ν$ at $5 \%$ and $1 \%$ level with $100$ and $350$ events respectively.
description: Accepted in MNRAS. A few sections improved, a new major Appendix and extra references added
title: Use of Molecular Modelling for the Understanding of Self-Assembly Processes in Supramolecular Polymers
Creators: name: Politi, A
Publisher: name: Liverpool John Moores University
Year: 2021

description: There is an increasing need to further improve and obtain new materials for biomedical and technological applications. The tools and intricacies of material discovery and design have been exponentially multiplying, especially in recent years, opening the way for new discoveries for next generation materials. This thesis investigates in silico conjugated organic supramolecular assemblies with the use of selected tools at the molecular level. The computational examination entails the geometrical and architectural design of the assemblies, and the study of their energetic details. A directed focus on OPE oligo(p-phenyleneethynylene)s, a photoisomerizing wire aggregate, and a series of porphyrinic assemblies is made in the evolution of this examination. These are versatile structures for supramolecular assembly, able to bind via a combination of non-covalent interactions, with interesting applications. The OPEs form 1D (one dimensional) wires with notable electronic properties. Furthermore, photoisomerizing aggregates have sparked abundant interest due to the control of assembly via light induction. Lastly, porphyrins are highly conjugated and readily functionalised molecules with the ability to form supramolecular assemblies from one to three dimensions. Porphyrin aggregates are also offered in crucial applications such as in photodynamic therapy, as well as an immensely wide and versatile spectrum of applications in further scientific sectors. The first part of this thesis assesses the recent relevant computational methods through a benchmark study for their accuracy and computational cost for their predictivity of conjugated organic self-assemblies. Subsequently, the chosen assessed method is further evaluated by comparison with a set of published experimental data of OPE assemblies. The newly published method, GFN2-xTB, is then evaluated as the most efficient for this type of entitiy. The aggregation motifs and polymer properties two of two OPEs and a photoisomerizing 1D wire assembly are initially studied. Subsequently, a set of porphyrinic supramolecular aggregations first in the 1D, and then in 3D are studied by utilising reference experimental data for further validation of the predictive capacity of GFN2-xTB. Lastly, for the first-time, chemical tuning recommendations are presented for promoting specific aggregations motifs. The combined results produce structure-property trends that purvey model assembly suggestions for supramolecular architectural synthesis and design.
Deep VLT spectroscopy of the blue compact dwarf galaxies Tol 1214-277 and Tol 65
Creators: name: Izotov, Y. I.
name: Papaderos, P.
name: Guseva, N. G.
name: Fricke, K. J.
name: Thuan, T. X.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present VLT spectroscopic observations with different spectral resolutions and different slit orientations of the two metal-deficient blue compact dwarf (BCD) galaxies Tol 1214-277 and Tol 65. The oxygen abundances in the brightest HII regions of Tol 1214-277 and Tol 65 are found to be 12+log O/H = 7.55+/-0.01 and 7.54+/-0.01, or Zsun/24. The nitrogen-to-oxygen abundance ratios in the two galaxies are log N/O =-1.64+/-0.03 and -1.60+/-0.02 and lie in the narrow range found for other most metal-deficient BCDs. The helium mass fraction derived in several HII regions in both galaxies is consistent with a high primordial helium mass fraction, Yp ~ 0.244. We confirm the detection of the high-ionization forbidden emission line [FeV]4227 in the spectrum of Tol 1214-277. Additionally, weak [NeIV]4725, [FeVI]5146, 5177, and [FeVII]5721, 6087 emission lines are detected in the high-resolution spectrum of Tol 1214-277. The detection of these lines implies the presence of hard radiation with photon energy in the range ~ 4-8 Ryd. Emission lines are detected in the spectra of eight galaxies in the fields of Tol 1214-277 and Tol 65. Seven of these galaxies are background objects, while one galaxy has a redshift close to that of Tol 1214-277. Situated at a projected distance of ~ 14.5 kpc from Tol 1214-277, this galaxy is probably a companion of the BCD.
description: 16 pages, 8 Postscript figures
Cartographic Interpretation of the Seafloor Geomorphology Using GMT: a Case Study of the Manila Trench, South China Sea
Creators: name: Lemenkova, Polina
Publisher: name: figshare
Year: 2020
Subjects: subject: Geography
subject: Physical Geography
subject: 40699 Physical Geography and Environmental Geoscience not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 90901 Cartography
subject: FOS: Environmental engineering
subject: 40601 Geomorphology and Regolith and Landscape Evolution
subject: Geology
subject: 40305 Marine Geoscience

description: The study is geographically focused on the Manila Trench, located in the west Pacific Ocean, South China Sea, west Philippines. The research aims at the geological mapping, analysis and visualizing variations in the submarine geomorphology of the Manila Trench. Technically, the work was done using Generic Mapping Tools scripting toolset (GMT). A combination of various GMT modules was applied for geospatial modelling. Methodology includes cartographic data integration and interpretation through approaches of data analysis: topographic plotting, geophysical modelling, geological mapping and statistical analysis. The data included SRTM, ETOPO1, geoid and gravity grids (CryoSat-2, Jason-1). Two sets of the cross-section profiles of the trench were automatically digitized. The profile transects were compared and differences in the geomorphic shape in southern and northern parts revealed. Southern part has steeper slope on the western part. Northern part is steeper on the continental slope part. The submarine terraces are located on the northern segment at depths -2,000 m. The depth and geomorphology of the slope vary for the range -3,500 to -4,500 m: minimals for the northern part with 526 samples (18.2%) for the depths -4,000 to -4,200 m. The histogram for the northern part has bimodal distribution with two peaks. The southern part shows 142 values for the minimals -3,500 to -3400 m. The statistical analyses revealed that northern part of the trench is deeper. The GMT functionality shown in this paper enabled integration and interpretation of the multi-source data: automatically digitized profiles, geological mapping, 2D and 3D bathymetric modelling, statistical analysis, mathematical approximation of the trend modelling. The GMT proved to be capable of visualizing geodata that can significantly improve Earth studies and interpretation of submarine geomorphology of the oceanic trenches through the advanced data analysis.
Recommendations for staff associations and unions towards ending gender-based violence
Creators: name: UniSAFE Project (2023)
Publisher: name: Zenodo
Year: 2023
Subjects: Gender based violence
Staff association
Unions
institutional policy

description: This factsheet addresses staff associations and unions in higher education and research institutions. It provides recommendations on their role towards ending gender-based violence. Recommendations are based on the findings from the EU-funded UniSAFE project. Readers of this factsheet may want to consult UniSAFE’s toolkit section on concepts and meanings. Background information about the root causes of gender-based violence in research and academia are laid out in the White Paper for Policymakers and Institutional Managers, together with a presentation of the 7P model (Prevalence, Prevention, Protection, Prosecution, Provision of services, Partnerships, Policy).
THE ROLE OF MITOCHONDRIAL DYSFUNCTION IN THE DEVELOPMENT OF NEURODEGENERATION
Creators: name: Ibrohimov, Dilshod
name: Urolov, Zhavlonbek
name: Omonkulova, Shokhsanam
name: Habibullaev, Fayoziddin
name: Kasimov, Arslanbek
Publisher: name: Zenodo
Year: 2025

description: The introduction comprehensively highlights the problem of the role of mitochondrial dysfunction in the development of neurodegeneration, including current understanding of the mechanisms of pathogenesis and therapeutic perspectives. The text is structured logically, emphasizes the relevance of the problem and outlines the prospects for further research, while maintaining the scientific style of presentation and the accuracy of formulations.
Recommendations for staff associations and unions towards ending gender-based violence
Creators: name: UniSAFE Project
Publisher: name: Zenodo
Year: 2023
Subjects: Gender based violence
Staff association
Unions
institutional policy

description: This factsheet addresses staff associations and unions in higher education and research institutions. It provides recommendations on their role towards ending gender-based violence. Recommendations are based on the findings from the EU-funded UniSAFE project. Readers of this factsheet may want to consult UniSAFE’s toolkit section on concepts and meanings. Background information about the root causes of gender-based violence in research and academia are laid out in the White Paper for Policymakers and Institutional Managers, together with a presentation of the 7P model (Prevalence, Prevention, Protection, Prosecution, Provision of services, Partnerships, Policy).
Unpaired Electrons in the Heavy-Fermion Superconductor CeCoIn_{5}
Creators: name: Tanatar, M. A.
name: Paglione, Johnpierre
name: Nakatsuji, S.
name: Hawthorn, D. G.
name: Boaknin, E.
name: Hill, R. W.
name: Ronning, F.
name: Sutherland, M.
name: Taillefer, Louis
name: Petrovic, C.
name: Canfield, P. C.
name: Fisk, Z.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Thermal conductivity and specific heat were measured in the superconducting state of the heavy fermion material Ce_{1-x}La_{x}CoIn_{5}. With increasing impurity concentration x, the suppression of T_{c} is accompanied by the increase in the residual electronic specific heat expected of a d-wave superconductor, but it occurs in parallel with a decrease in residual electronic thermal conductivity. This contrasting behavior reveals the presence of uncondensed electrons coexisting with nodal quasiparticles. An extreme multiband scenario is proposed, with a d-wave superconducting gap on the heavy-electron sheets of the Fermi surface and a negligible gap on the light, three-dimensional pockets.
description: 4 pages, 3 figures
High-order parametric generation of coherent XUV radiation
Creators: name: Hort, O.
name: Dubrouil, A.
name: Khokhlova, M. A.
name: Descamps, D.
name: Petit, S.
name: Burgy, F.
name: Mevel, E.
name: Constant, E.
name: Strelkov, V. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We observe a new regime of coherent XUV radiation generation in noble gases induced by femtosecond pulses at very high intensities. This XUV emission has both a reduced divergence and spectral width as compared to high-order harmonic generation (HHG). It is not emitted at a moderate intensity of the driving pulses where only high-order harmonics are generated. At high driving intensities, the additional XUV comb appears near all harmonic orders and even exceeds the HHG signal on the axis. The peaks are observed in several gases and their frequencies do not depend on the driving intensity or gas pressure. We analyze the divergence, spectral width and spectral shift of this XUV emission. We show that these specific features are well explained by high-order parametric generation (HPG) involving multiphoton absorption and combined emission of an idler THz radiation and an XUV beam with remarkably smooth spatial and spectral characteristics.
description: 18 pages, 12 figures. To be published in a peer-reviewed scientific journal
RE-EXPLORING THE POTENTIALITY OF BIM: INCORPORATING BIM INTO THE MULTI-DISCIPLINARY EDUCATIONAL SETUP
Creators: name: Abdalla, Salem Buhashima
Publisher: name: figshare
Year: 2020
Subjects: subject: 120201 Building Construction Management and Project Planning
subject: FOS: Civil engineering
subject: 120101 Architectural Design
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 129999 Built Environment and Design not elsewhere classified
subject: 120202 Building Science and Techniques

description: Abstract - This study is an attempt to incorporate Building Information Modeling (BIM) into the engineering curriculum, particularly for the College of Engineering at the University of Sharjah, UAE. A multidisciplinary team consists of engineering students, representing four departments, Architectural Engineering (AE), Civil and Environmental Engineering (CEE), Mechanical Engineering (ME), and Electrical Engineering (EE) was formed to model and work collaboratively on a common digital model. To achieve the objectives, the team-members were educated about BIM through series of lectures, workshops, conducting case studies and participating in practical training. The findings showed great interest among students to work collaboratively on a common model and enjoy the positive experience with BIM. However, the most significant obstacles to incorporate BIM into the engineering curriculum are those already missioned in several existing literatures including teaching methodology and associated logistics. Thus, to overcome such obstacles, a BIM workshop for aforementioned engineering domains is suggested prior to fully incorporate the interdisciplinary approach within the engineering curriculum.
On kinks and other travelling-wave solutions of a modified sine-Gordon equation
Creators: name: Fiore, Gaetano
name: Guerriero, Gabriele
name: Maio, Alfonso
name: Mazziotti, Enrico
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Q51, 37K45

description: We give an exhaustive, non-perturbative classification of exact travelling-wave solutions of a perturbed sine-Gordon equation (on the real line or on the circle) which is used to describe the Josephson effect in the theory of superconductors and other remarkable physical phenomena. The perturbation of the equation consists of a constant forcing term and a linear dissipative term. On the real line candidate orbitally stable solutions with bounded energy density are either the constant one, or of kink (i.e. soliton) type, or of array-of-kinks type, or of "half-array-of-kinks" type. While the first three have unperturbed analogs, the last type is essentially new. We also propose a convergent method of successive approximations of the (anti)kink solution based on a careful application of the fixed point theorem.
description: Latex file, 25 pages, 4 figures. Final version to appear in "Meccanica"
Nuclear matter symmetry energy and the neutron skin thickness of heavy nuclei
Creators: name: Chen, Lie-Wen
name: Ko, Che Ming
name: Li, Bao-An
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Correlations between the thickness of the neutron skin in finite nuclei and the nuclear matter symmetry energy are studied in the Skyrme Hartree-Fock model. From the most recent analysis of the isospin diffusion data in heavy-ion collisions based on an isospin- and momentum-dependent transport model with in-medium nucleon-nucleon cross sections, a value of $L=88\pm 25$ MeV for the slope of the nuclear symmetry energy at saturation density is extracted, and this imposes stringent constraints on both the parameters in the Skyrme effective interactions and the neutron skin thickness of heavy nuclei. Predicted thickness of the neutron skin is $0.22\pm 0.04$ fm for $% ^{208}$Pb, $0.29\pm 0.04$ fm for $^{132}$Sn, and $0.22\pm 0.04$ fm for $% ^{124}$Sn.
description: 6 pages, 4 figures, 1 table, revised version, to appear in PRC
Fundamental relations for the velocity dispersion of stars in the Milky Way
Creators: name: Sharma, Sanjib
name: Hayden, Michael R.
name: Bland-Hawthorn, Joss
name: Stello, Dennis
name: Buder, Sven
name: Zinn, Joel C.
name: Kallinger, Thomas
name: Asplund, Martin
name: De Silva, Gayandhi M.
name: Dorazi, Valentina
name: Freeman, Ken
name: Kos, Janez
name: Lewis, Geraint F.
name: Lin, Jane
name: Lind, Karin
name: Martell, Sarah
name: Simpson, Jeffrey D.
name: Wittenmyer, Rob A.
name: Zucker, Daniel B.
name: Zwitter, Tomaz
name: Chen, Boquan
name: Cotar, Klemen
name: Esdaile, James
name: Hon, Marc
name: Horner, Jonathan
name: Huber, Daniel
name: Kafle, Prajwal R.
name: Khanna, Shourya
name: Ting, Yuan-sen
name: Nataf, David M.
name: Nordlander, Thomas
name: Saadon, Mohd Hafiz Mohd
name: Tinney, C. G.
name: Traven, Gregor
name: Watson, Fred
name: Wright, Duncan
name: Wyse, Rosemary F. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We explore the fundamental relations governing the radial and vertical velocity dispersions of stars in the Milky Way, from combined studies of complementary surveys including GALAH, LAMOST, APOGEE, the NASA $Kepler$ and K2 missions, and $Gaia$ DR2. We find that different stellar samples, even though they target different tracer populations and employ a variety of age estimation techniques, follow the same set of fundamental relations. We provide the clearest evidence to date that, in addition to the well-known dependence on stellar age, the velocity dispersions of stars depend on orbital angular momentum $L_z$, metallicity and height above the plane $|z|$, and are well described by a multiplicatively separable functional form. The dispersions have a power-law dependence on age with exponents of 0.441$\pm 0.007$ and 0.251$\pm 0.006$ for $σ_z$ and $σ_R$ respectively, and the power law is valid even for the oldest stars. For the solar neighborhood stars, the apparent break in the power law for older stars, as seen in previous studies, is due to the anti-correlation of $L_z$ with age. The dispersions decrease with increasing $L_z$ until we reach the Sun's orbital angular momentum, after which $σ_z$ increases (implying flaring in the outer disc) while $σ_R$ flattens. The dispersions increase with decreasing metallicity, suggesting that the dispersions increase with birth radius. The dispersions also increase linearly with $|z|$. The same set of relations that work in the solar neighborhood also work for stars between $3
description: 19 pages, 15 figures, submitted to MNRAS