cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measuring and resource-efficient optimization of clustering quality
Creators: name: Lenssen, Lars Filipp
Publisher: name: TU Dortmund
Year: 2025
Subjects: subject: Cluster analysis
subject: Clustering quality
subject: Clustering evaluation
subject: 004
subject: Cluster-Analyse

description: Cluster analysis is a fundamental task in exploratory data mining, widely used to uncover hidden structures within datasets across various fields. It has broad applications, from identifying subgroups in gene expression data for disease research to segmenting customer bases in industry. Over time, a diverse range of clustering methods has been developed to handle the complex structure of different data domains. Despite these, key challenges remain, particularly in evaluating the quality of clustering results and optimizing the performance of clustering algorithms. The research presents the Average Medoid Silhouette (AMS), an improved version of the Average Silhouette Width (ASW), and introduces the FastMSC and FasterMSC algorithms, which optimize the AMS directly. The DynMSC algorithm is also proposed to simplify determining the optimal number of clusters. For categorical data, the Average Relative Entropy Score (ARES) and Minimum Relative Entropy Contrast (MREC) are introduced, forming the basis of the CatRED algorithm, an agglomerative hierarchical method applied in information systems research.
Dynamical determination of B_K from improved staggered quarks
Creators: name: Gamiz, E.
name: Collins, S.
name: Davies, C. T. H.
name: Shigemitsu, J.
name: Wingate, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The scaling corrections that affected previous staggered calculations of B_K have been proved to be reduced by using improved actions (HYP, Asqtad) in the quenched approximation. This improved behaviour allows us to perform a reliable dynamical calculation of B_K including quark vacuum polarization effects using the MILC (2+1) flavour dynamical configurations. We report here on the results from such dynamical calculation. We also discuss the renormalization effects with the Asqtad action.
description: 6 pages, 2 figures. Talk presented at Lattice 2005 (Dublin). To appear in Proceedings of Science
CHILDREN VIEW THEIR GOVERNMENT AND THE ISSUES: A POST-WATERGATE ASSESSMENT OF POLITICAL SOCIALIZATION
Creators: name: Carroll, James Willis
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: A, page: 1617.
Fast simulations of cosmic large-scale structure with massive neutrinos
Creators: name: Partmann, Christian
name: Fidler, Christian
name: Rampf, Cornelius
name: Hahn, Oliver
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: Accurate cosmological simulations that include the effect of non-linear matter clustering as well as of massive neutrinos are essential for measuring the neutrino mass scale from upcoming galaxy surveys. Typically, Newtonian simulations are employed and the neutrino distribution is sampled with a large number of particles in order to beat down the shot noise. Here we perform very efficient simulations with light massive neutrinos which require virtually no extra cost over matter-only simulations, and furthermore do not require tracer particles for the neutrinos. Instead, we use a weak-field dictionary based on the recently developed Newtonion motion approach, where Newtonian simulations for matter are paired with a linear relativistic Boltzmann code to allow for an absorption of the neutrino evolution into a time-dependent coordinate transformation. For this, only minimal modifications in existing N-body codes are required, which we have explicitly implemented in $\textit{gevolution}$ and $\textit{gadget-2}$. Our fast method determines the non-linear matter power spectrum to permille-level precision when compared against state-of-the-art simulations that have been performed for $0.1\,{\rm eV} \leq \sum m_ν\leq 0.3\,$eV.
description: v2, matches published version at JCAP
Cornwall-Jackiw-Tomboulis effective potential for canonical noncommutative field theories
Creators: name: Mandanici, Gianluca
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply the Cornwall-Jackiw-Tomboulis (CJT) formalism to the scalar $λϕ^{4}$ theory in canonical-noncommutative spacetime. We construct the CJT effective potential and the gap equation for general values of the noncommutative parameter $θ_{μν}$. We observe that under the hypothesis of translational invariance, which is assumed in the effective potential construction, differently from the commutative case ($θ_{μν}= 0$), the renormalizability of the gap equation is incompatible with the renormalizability of the effective potential. We argue that our result, is consistent with previous studies suggesting that a uniform ordered phase would be inconsistent with the infrared structure of canonical noncommutative theories.
description: 15 pages, LaTex
PERSONALITY, POLITICS AND SEX: A SURVEY AND RESEARCH ANALYSIS OF SEXUALLY DIFFERENTIAL SOCIALIZATION TO POLITICAL PARTICIPATION IN THE UNITED STATES
Creators: name: Deister, Bobbie Jeanne
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: A, page: 1618.
Born-Infeld Quantum Condensate as Dark Energy in the Universe
Creators: name: Elizalde, Emilio
name: Lidsey, James E.
name: Nojiri, Shinichi
name: Odintsov, Sergei D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Some cosmological implications of ultraviolet quantum effects leading to a condensation of Born-Infeld matter are considered. It is shown that under very general conditions the quantum condensate can not act as phantom matter if its energy density is positive. On the other hand, it behaves as an effective cosmological constant in the limit where quantum induced contributions to the energy-momentum tensor dominate over the classical effects.
description: 9 pages, no figures. Extended discussion, In Press, Physics Letters B
A COMPARATIVE ANALYSIS OF RESOURCE ALLOCATION PLANS FOR URBAN FIRE SAFETY
Creators: name: Hickey, Harry Elmer
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4407
subject: Policy and administration

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: A, page: 1648.
Involutions of knots that fix unknotting tunnels
Creators: name: Futer, David
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25; 57N10

description: Let K be a knot that has an unknotting tunnel tau. We prove that K admits a strong involution that fixes tau pointwise if and only if K is a two-bridge knot and tau its upper or lower tunnel.
description: 9 pages, 3 figures
A search for starlight reflected from HD 75289 b
Creators: name: Leigh, C.
name: Cameron, A. Collier
name: Udry, S.
name: Donati, J. -F.
name: Horne, K.
name: James, D.
name: Penny, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used a doppler tomographic analysis to conduct a deep search for the starlight reflected from the planetary companion to HD 75289. In 4 nights on VLT2/UVES in January 2003, we obtained 684 high resolution echelle spectra with a total integration time of 26 hours. We establish an upper limit on the planet's geometric albedo p < 0.12 (to the 99.9% significance level) at the most probable orbital inclination i ~ 60 degrees, assuming a grey albedo, a Venus-like phase function and a planetary radius R_p = 1.6 R_Jup. We are able to rule out some combinations of the predicted planetary radius and atmospheric albedo models with high, reflective cloud decks.
description: 5 pages, 5 figures, MNRAS accepted 12 Oct 2003
New Test of the Gravitational $1/r^2$ Law at Separations down to 52 $μ$m
Creators: name: Lee, J. G.
name: Adelberger, E. G.
name: Cook, T. S.
name: Fleischer, S. M.
name: Heckel, B. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We tested the gravitational $1/r^2$ law using a stationary torsion-balance detector and a rotating attractor containing test bodies with both 18-fold and 120-fold azimuthal symmetries that simultaneously tests the $1/r^2$ law at two different length scales. We took data at detector-attractor separations between $52~μ$m and 3.0 mm. Newtonian gravity gave an excellent fit to our data, limiting with 95\% confidence any gravitational-strength Yukawa interactions to ranges $< 38.6~μ$m.
description: 5 pages, 5 figures
Measuring Success Through Improved Attribution
Creators: name: Gutzman, Karen E
name: Holmes, Kristi
name: Haendel, Melissa
name: Konkiel, Stacy
Publisher: name: DigitalHub. Galter Health Sciences Library
Year: 2015
Subjects: subject: scholarly communication
subject: VIVO Conference (2015 : Cambridge, Mass.)
subject: Attribution
subject: Contribution
subject: research outputs
subject: credit
subject: Achievement
subject: Evaluation Studies as Topic
subject: Authorship
subject: Communication in learning and scholarship
subject: Research

description: Presentation at the VIVO 2015 Conference, August 14, 2015, Cambridge, MA
description: Measuring success through improved attribution As data science and informatics transform scholarly activities, the structure and composition of the typical scientific team is changing. Professionals from diverse backgrounds are now contributing fundamentally to discoveries and creative scholarly outputs, often in ways that cannot be quantified through traditional metrics of scholarly impact. To credit and evaluate the work of these important collaborators, we need mechanisms to capture such contributions. VIVO is well positioned to assist in the development of a standard mechanism for attribution and subsequent citation of these individuals creative contributions. With the goal of leading the way toward a computational model for collecting and disseminating contributor attribution data, this panel aims to identify stakeholders (researchers, developers, publishers, agencies), assess attribution requirements, and provide an interactive community forum to define innovative approaches to scientific attribution. Follow the conversation in this interactive session at #VIVOcredit.
description: presentation_location: Cambridge, Massachusetts, United States
A Dynamical Model for the Orbit of the Andromeda Galaxy M31 and the Origin of the Local Group of Galaxies
Creators: name: Sawa, T.
name: Fujimoto, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a new model for the origin and evolution of the Local Group of Galaxies (LGG) which naturally explains the formation of the Magellanic Clouds and their large orbital angular momenta around the Galaxy. The basic idea is that an off-center hydrodynamical collision occurred some 10 Gyr ago between the primordial gas-rich Andromeda galaxy and the similar Galaxy, and compressed the halo gas to form the LGG dwarf galaxies including the Magellanic Clouds. In this model, new-born dwarf galaxies can be expected to locate near the orbital plane of these two massive galaxies. In order to see the reality of this model, we reexamine the two-dimensional sky distribution of the LGG members and the Magellanic Stream, we confirm an earlier and widely-discussed idea that they align along two similar great circles, each with an angular width of $\sim 30^{\circ}$, and the planes of these circles are approximately normal to the line joining the present position of the sun and the Galactic center. Further we make a three-dimensional distribution map of these objects, and observe it from various directions. A well-defined plane of finite thickness is found, within which most of the member galaxies are confined, supporting the existence of the above circles on the sky. Thus we could determine the orbital elements of M31 relative to the Galaxy through reproducing the well-studied dynamics of the LMC and the SMC around the Galaxy. The expected proper motion of M31 is $(μ_l, μ_b)=(38 μas/yr, -49 μas/yr)$. Probable orbital motions of the other dwarfs are also determined, and the corresponding proper motion for each object is given to compare with observations in near future.
description: Submitted and revised to PASJ, 21 pages, 14 figures and 2 tables
Generalized logistic growth modeling of the COVID-19 outbreak: comparing the dynamics in the 29 provinces in China and in the rest of the world
Creators: name: Wu, Ke
name: Darcet, Didier
name: Wang, Qian
name: Sornette, Didier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: Applications (stat.AP)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Started in Wuhan, China, the COVID-19 has been spreading all over the world. We calibrate the logistic growth model, the generalized logistic growth model, the generalized Richards model and the generalized growth model to the reported number of infected cases for the whole of China, 29 provinces in China, and 33 countries and regions that have been or are undergoing major outbreaks. We dissect the development of the epidemics in China and the impact of the drastic control measures both at the aggregate level and within each province. We quantitatively document four phases of the outbreak in China with a detailed analysis on the heterogeneous situations across provinces. The extreme containment measures implemented by China were very effective with some instructive variations across provinces. Borrowing from the experience of China, we made scenario projections on the development of the outbreak in other countries. We identified that outbreaks in 14 countries (mostly in western Europe) have ended, while resurgences of cases have been identified in several among them. The modeling results clearly show longer after-peak trajectories in western countries, in contrast to most provinces in China where the after-peak trajectory is characterized by a much faster decay. We identified three groups of countries in different level of outbreak progress, and provide informative implications for the current global pandemic.
Please Biofeed the Zombies
Creators: name: Champion, Erik
Publisher: name: figshare
Year: 2021
Subjects: subject: 190202 Computer Gaming and Animation
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: [2007 Digra conference paper, Tokyo] This paper describes an investigation into how real-time but low-cost biometric information can be interpreted by computer games to enhance gameplay without fundamentally changing it. We adapted a cheap sensor, (the Lightstone mediation sensor device by Wild Divine), to record and transfer biometric information about the player (via sensors that clip over their fingers) into a commercial game engine, Half-Life 2.
During game play, the computer game was dynamically modified by the player’s biometric information to increase the cinematically augmented “horror” affordances. These included dynamic changes in the game shaders, screen shake, and the creation of new spawning points for the game’s non-playing characters (zombies), all these features were driven by the player’s biometric data.
To evaluate the usefulness of this biofeedback device, we compared it against a control group of players who also had sensors clipped on their fingers, but for the second group the gameplay was not modified by the biometric information of the players. While the evaluation results indicate biometric data can improve the situated feeling of horror, there are many design issues that will need to be investigated by future research, and the judicious selection of theme and appropriate interaction is vital.
Resonating-valence-bond structure of Gutzwiller-projected superconducting wave functions
Creators: name: Ivanov, D. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Gutzwiller-projected (GP) wave functions have been widely used for describing spin-liquid physics in frustrated magnets and in high-temperature superconductors. Such wave functions are known to represent states of the resonating-valence-bond (RVB) type. In the present work I discuss the RVB structure of a GP singlet superconducting state with nodes in the spectrum. The resulting state for the undoped spin system may be described in terms of the "path integral" over loop coverings of the lattice, thus extending the known construction for RVB states. The problem of the topological order in GP states may be reformulated in terms of the statistical behavior of loops. The simple example of the projected d-wave state on the square lattice demonstrates that the statistical behavior of loops is renormalized in a nontrivial manner by the projection.
description: 6 pages, 4 figures, some numerical data added
Bethe Ansatz solution of the open XXZ chain with nondiagonal boundary terms
Creators: name: Nepomechie, Rafael I.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a set of conventional Bethe Ansatz equations and a corresponding expression for the eigenvalues of the transfer matrix for the open spin-1/2 XXZ quantum spin chain with nondiagonal boundary terms, provided that the boundary parameters obey a certain linear relation.
description: 11 pages, LaTeX; amssymb, amsmath, no figures; v2: citation added
CONCEPTUALIZATIONS OF DEVELOPMENT IN LATIN AMERICA IN THE 1960'S: THE QUEST FOR SOCIAL JUSTICE
Creators: name: Inda-Buendia, Caridad
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: A, page: 1636.
Semi-abelian spectral data for singular fibres of the $\mathsf{SL}(2,\mathbb{C})$-Hitchin system
Creators: name: Horn, Johannes
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We describe spectral data for singular fibres of the $\mathsf{SL}(2,\mathbb{C})$-Hitchin fibration with irreducible and reduced spectral curve. Using Hecke transformations we give a stratification of these singular spaces by fibre bundles over Prym varieties. By analysing the parameter spaces of Hecke transformations this describes the singular Hitchin fibres as compactifications of abelian group bundles over abelian torsors. We prove that a large class of singular fibres are themselves fibre bundles over Prym varieties. As applications we study irreducible components of singular Hitchin fibres and give a description of $\mathsf{SL}(2,\mathbb{R})$-Higgs bundles in terms of these semi-abelian spectral data.
description: 43 pages, 1 figure; v3: Correction of special case in Section 6 and 8. To appear in International Mathematics Research Notices
High Resolution Heavy Ion Track Structure Imaging
Creators: name: Laczko, G.
name: Dangendorf, V.
name: Kraemer, M.
name: Schardt, D.
name: Tittelmeier, K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The difference in the relative biological efficincy (RBE) of ions of same linear energy transfer (LET) but different atomic number (Z) can be attributed to the difference in the radial ionisation distribution. In this contribution we present data from measurements of the spatial ionisation pattern of heavy ions of various Z but similar LET and compare the results with track structure data obtained by Monte Carlo simulations. The measurements were made with a time projection chamber with optical readout (Optical Avalanche Chamber, OPAC) which is able to quantitatively capture the spatial ionisation pattern of an ion traversing the chamber
SENTINELS ON THE WATCHTOWER: THE CONFEDERATE GOVERNORS AND THE DAVIS ADMINISTRATION
Creators: name: Kaufman, Janet E.
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 43
subject: History, heritage and archaeology
classificationCode: 4303
subject: Historical studies

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: A, page: 1602.
Containers and Workflow Pipelines for reproducible and automated data analysis
Creators: name: Muyldermans, Tuur
Publisher: name: Zenodo
Year: 2021
Subjects: workflow pipelines
containers
reproducibility
nextflow
docker

description: Slides for the "Containers & Workflow Pipelines for reproducible and automated data-analysis" presentation for Capita Selecta in Bioinformatics (Ghent University) on 29 March 2021.
"THE FIDDLE IN THE WINGS": AN APPROACH TO MUSIC IN DRAMA
Creators: name: Lasko, Joanne Zunzer
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 47
subject: Language, communication and culture
classificationCode: 4705
subject: Literary studies

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: A, page: 1391.
The high-energy gamma-ray light curve of PSR B1259 -63
Creators: name: Kirk, J. G.
name: Ball, Lewis
name: Johnston, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The high-energy gamma-ray light curve of the binary system PSR B1259 -63, is computed using the approach that successfully predicted the spectrum at periastron. The simultaneous INTEGRAL and H.E.S.S. spectra taken 16 days after periastron currently permit both a model with dominant radiative losses, high pulsar wind Lorentz factor and modest efficiency as well as one with dominant adiabatic losses, a slower wind and higher efficiency. In this paper we shown how the long-term light curve may help to lift this degeneracy.
description: 4 pages, to appear in proceedings of: Astrophysical Sources of High Energy Particles and Radiation, Torun (2005)
Multimodal Trajectory Optimization for Motion Planning
Creators: name: Osa, Takayuki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Existing motion planning methods often have two drawbacks: 1) goal configurations need to be specified by a user, and 2) only a single solution is generated under a given condition. In practice, multiple possible goal configurations exist to achieve a task. Although the choice of the goal configuration significantly affects the quality of the resulting trajectory, it is not trivial for a user to specify the optimal goal configuration. In addition, the objective function used in the trajectory optimization is often non-convex, and it can have multiple solutions that achieve comparable costs. In this study, we propose a framework that determines multiple trajectories that correspond to the different modes of the cost function. We reduce the problem of identifying the modes of the cost function to that of estimating the density induced by a distribution based on the cost function. The proposed framework enables users to select a preferable solution from multiple candidate trajectories, thereby making it easier to tune the cost function and obtain a satisfactory solution. We evaluated our proposed method with motion planning tasks in 2D and 3D space. Our experiments show that the proposed algorithm is capable of determining multiple solutions for those tasks.
description: 17 pages, International Journal of Robotics Research
On charm baryon resonances and chiral symmetry
Creators: name: Lutz, M. F. M.
name: Kolomeitsev, E. E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study heavy-light baryon resonances with quantum numbers J^P=1/2^- in terms of the non-linear chiral SU(3) Lagrangian. Within the chi-BS(3) approach a parameter-free leading order prediction is obtained for the scattering of Goldstone bosons off heavy-light baryon resonances with J^P=1/2^+. The three states Lambda_{c1}(2593), Lambda_{c0}(2880) and Xi_{c1}(2790) discovered by the CLEO collaboration are recovered. We suggest the existence of resonance states that form an anti-quindecimplet, two sextet and two anti-triplet representations of the SU(3) group. In particular, narrow states with anomalous isospin (I) and strangeness (S) quantum numbers (I,S)=(1/2,+1) are anticipated.
description: GSI-Preprint-2003-23, minor corrections
Using AAC video visual scene displays to increase participation and communication within a volunteer activity for adolescents with complex communication needs
Creators: name: Salena Babb
name: McNaughton, David
name: Light, Janice
name: Caron, Jessica
name: Wydner, Kirk
name: Sojung Jung
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Volunteer activities can provide opportunities to learn new skills, build social networks, and contribute to enhanced self-esteem. Volunteering also provides a positive contribution to society, and an opportunity to participate in activities that may differ from those in paid employment. People with severe disabilities and complex communication needs, however, may face significant barriers in participating and communicating in volunteer activities. A multiple-probe-across-participants, single-case experimental design was used to evaluate the effectiveness of videos with integrated visual scene displays (video VSDs). The video VSDs were presented using a tablet-based augmentative and alternative communication (AAC) app, as an intervention to increase the percent of steps completed independently within a volunteer activity. Participants were four adolescents with autism spectrum disorder or Down syndrome, all of whom had complex communication needs. Each participant met the mastery criterion for the activity – completion of the volunteer work activities and communication exchanges with co-volunteers – with the use of the video VSDs. The results provide preliminary evidence that video VSDs may be an effective assistive technology for individuals with severe disabilities and complex communication needs to increase participation in volunteer activities, both as an instructional support in learning new skills, and as an AAC technique to support interaction with others.
Effect of Siwak and Bamboo Fibers on Tensile Properties of Self-Cure Acrylic Resin Used for Denture Applications
Creators: name: Oleiwi, Jawad K.
Publisher: name: figshare
Year: 2020
Subjects: subject: 90301 Biomaterials
subject: FOS: Medical engineering
subject: 110501 Dental Materials and Equipment
subject: FOS: Clinical medicine
subject: 91202 Composite and Hybrid Materials
subject: FOS: Materials engineering
subject: 91299 Materials Engineering not elsewhere classified

description: The research investigated to determine enhancement in the tensile properties of self-cure acrylic resin reinforced with siwak fiber and bamboo fibers which were cut into 2, 6, and 12 mm lengths and used at three different concentrations of (3, 6, and 9 wt.%). The mixture of resin and fiber were cured at 2.5 bar and 55°C in a water bath for 30 min. The cured resin specimen tested for tensile properties (tensile strength, young modulus, elongation percentage at break) following the specification of ASTM No. 638. The results illustrated that the tensile strength and young modulus tended to be improved with fiber length and concentration, the largest values of tensile strength and young modulus for specimens reinforced with bamboo fibers are (72.4 MPa and 5.208 GPa) while for specimens reinforced with siwak fibers are (71 MPa and 4.9 GPa) at optimum condition of weight fraction (9%) and fiber length (12 mm) which was significantly higher than other formulations.
THE ROLE OF FAMILY CONCEPT IN FAMILIES WITH A DELINQUENT ADOLESCENT CHILD
Creators: name: Merwin, Jack Melvin
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 52
subject: Psychology
subject: FOS: Psychology
classificationCode: 5203
subject: Clinical and health psychology

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: B, page: 1411.
EXPLORING EAST AND WEST CULTURAL VARIATIONS IN EMOTION LEXICON
Creators: name: Agustine, Hana
Publisher: name: figshare
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: This research explores the variation, if at all, of emotion lexicons between Eastern and Western cultures. It specifically explores a possible difference in the proportion of emotion words in the Eastern versus Western lexicon and the density distribution of emotion words, given their valence, in Eastern and Western lexicons.
900325AGUSTINE_HANA_CAPSTONE RESEARCH ESSAY.pdf
Creators: name: Agustine, Hana
Publisher: name: figshare
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: This research explores the variation, if at all, of emotion lexicons between Eastern and Western cultures. It specifically explores a possible difference in the proportion of emotion words in the Eastern versus Western lexicon and the density distribution of emotion words, given their valence, in Eastern and Western lexicons.
The Goldstone bosons in the pairing Hamiltonian: the path integral approach
Creators: name: Barbaro, M. B.
name: Molinari, A.
name: Palumbo, F.
name: Quaglia, M. R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: As a first step to derive the IBM from a microscopic nuclear hamiltonian, we bosonize the pairing hamiltonian in the framework of the path integral formalism respecting both the particle number conservation and the Pauli principle. Special attention is payed to the role of the Goldstone bosons. We construct the saddle point expansion which reproduces the sector of the spectrum associated to the addition or removal of nucleon pairs.
description: 23 pages
Preparation and Investigation of some Properties of Acrylic Resin Reinforced with Siwak Fiber Used for Denture Base Applications
Creators: name: Oleiwi, Jawad K.
Publisher: name: figshare
Year: 2020
Subjects: subject: 90301 Biomaterials
subject: FOS: Medical engineering
subject: 110501 Dental Materials and Equipment
subject: FOS: Clinical medicine
subject: 91202 Composite and Hybrid Materials
subject: FOS: Materials engineering
subject: 91299 Materials Engineering not elsewhere classified

description: Natural fibers have recently become attractive to researchers due to their low cost, fairly good mechanical properties, high specific strength, non-abrasive, eco-friendly, bio-degradability and biocompatibility characteristics, they are exploited as a replacement for the conventional fibers, such as glass, aramid and carbon. This study investigated the influence of fiber length and weight fraction of natural siwak fiber, with the selected length of (2, 6 and 12 mm) and weight fraction (3, 6 and 9 wt %), on some of mechanical and physical properties such as (tensile, impact and hardness), in addition to test the infrared spectroscopy FTIR of the prepared denture base resin and all of these tests were carried out at laboratory temperature.The properties of PMMA reinforced by natural fiber are mainly affected by the interfacial adhesion strength between the matrix and the fiber, and in order to improve interconnection between the siwak fiber and PMMA matrix, so the siwak fibers were treated with alkali (sodium hydroxide) solution prior to use as reinforcement materials. The results illustrated that the tensile strength, young modulus, fracture toughness and hardness tended to be improved with length and concentration ratios of siwak fiber, while the impact strength and elongation percentage at break decrease with fiber content in composite samples
Interaction between a galactic disk and a live dark halo with an anisotropic velocity distribution
Creators: name: Fuchs, B.
name: Athanassoula, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have extended previous analytical studies of the interaction of dark halos with galactic disks by introducing for the halo particles anisotropic distribution functions in phase space. For this purpose we have employed the shearing sheet model of a patch of a galactic disk embedded in a homogeneous halo. We find that velocity anisotropy increases considerably the maximum growth factor of perturbations in the disk.
description: 5 pages, 1 figure, accepted by Astronomy & Astrophysics
Size-polydisperse dust in molecular gas: Energy equipartition versus non-equipartition
Creators: name: Osinsky, Alexander
name: Bodrova, Anna S.
name: Brilliantov, Nikolai V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate numerically and analytically size-polydisperse granular mixtures immersed into a molecular gas. We show that the equipartition of granular temperatures of particles of different sizes is established; however, the granular temperatures significantly differ from the temperature of the molecular gas. This result is surprising since, generally, the energy equipartition is strongly violated in driven granular mixtures. Qualitatively, the obtained results do not depend on the collision model, being valid for a constant restitution coefficient $\varepsilon$, as well as for the $\varepsilon$ for viscoelastic particles. Our findings may be important for astrophysical applications, such as protoplanetary disks, interstellar dust clouds, and comets.
A STUDY OF THE EFFECT OF A TEST-RELATED QUESTION SET ON INTENTIONAL LEARNING ON A GROUP OF SELECTED FRESHMEN COLLEGE STUDENTS
Creators: name: Stafford, Ellenor Knowles
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: A, page: 1344.
THE CHARACTERIZATION OF THE METAL SULFIDE SULFUR-DIOXIDE REACTION IN AQUEOUS MEDIA
Creators: name: Thom, Gary Carlisle
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences
classificationCode: 3406
subject: Physical chemistry

description: Source: Dissertation Abstracts International, Volume: 38-03, Section: B, page: 1239.
Semi-hyperbolic fibered rational maps and rational semigroups
Creators: name: Sumi, Hiroki
Publisher: name: arXiv
Year: 2005
Subjects: subject: Dynamical Systems (math.DS)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: We consider fiber-preserving complex dynamics on fiber bundles whose fibers are Riemann spheres and whose base spaces are compact metric spaces. In this context, without any assumption on (semi-)hyperbolicity, we show that the fiberwise Julia sets are uniformly perfect. From this result, we show that, for any semigroup $G$ generated by a compact family of rational maps on the Riemann sphere of degree two or greater, the Julia set of any subsemigroup of $G$ is uniformly perfect. We define the semi-hyperbolicity of dynamics on fiber bundles and show that, if the dynamics on a fiber bundle is semi-hyperbolic, then the fiberwise Julia sets are porous, and the dynamics is weakly rigid. Moreover, we show that if the dynamics is semi-hyperbolic and the fiberwise maps are polynomials, then under some conditions, the fiberwise basins of infinity are John domains. We also show that the Julia set of a rational semigroup (a semigroup generated by rational maps on the Riemann sphere) that is semi-hyperbolic, except at perhaps finitely many points in the Julia set, and which satisfies the open set condition, is either porous or equal to the closure of the open set. Furthermore, we derive an upper estimate of the Hausdorff dimension of the Julia set.
description: June 10, 2006 version. 31 pages, published in Ergodic Theory and Dynamical Systems. A typo in Theorem 2.6 is fixed. See also http://www.math.sci.osaka-u.ac.jp/~sumi/welcomeou-e.html
Austracoenonica laminaris Pace 2015, spec. nov.
Creators: name: Pace, Roberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Austracoenonica
Austracoenonica laminaris

description: Austracoenonica laminaris spec. nov.
(Figs 6, 28–32)
 Type material: Holotype , Australia, Queensland, Mt. Tambourine, 5.III.1997, leg. Wachtel (CSCÜ).
 Description: Length 2.4 mm. Body shiny, convex, reddish, antennae brown with the three basal antennomeres reddish and the eleventh yellow, legs yellowish-red. Eyes longer than the postocular region in dorsal view. Second antennomere as long as the first one, third shorter than the second one, fourth to tenth transverse. Reticulation of the body absent. Head and pronotum dotting close and superficial, that of the abdomen evident, more close at the base of each free urotergite of the male and at the bottom of the three basal sulci. Granularity of the elytra close and salient. Fifth free urotergite of the male with salient and sharp median keel that doesn’t reach the posterior edge. Aedeagus as in Figs 28–29.
 Etymology: The new species take its name from internal lamina of aedeagus.
description: Published as part of Pace, Roberto, 2015, New genera and new species of Aleocharinae from Australia (Coleoptera, Staphylinidae), pp. 327-339 in Beiträge Zur Entomologie = Contributions to Entomology 65 (2) on page 330, DOI: 10.21248/contrib.entomol.65.2.327-339, http://zenodo.org/record/4754013
How much do underestimated field strengths from Zeeman-Doppler imaging affect spin-down torque estimates?
Creators: name: See, Victor
name: Lehmann, Lisa
name: Matt, Sean P.
name: Finley, Adam J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Numerous attempts to estimate the rate at which low-mass stars lose angular momentum over their lifetimes exist in the literature. One approach is to use magnetic maps derived from Zeeman-Doppler imaging (ZDI) in conjunction with so-called "braking laws". The use of ZDI maps has advantages over other methods because it allows information about the magnetic field geometry to be incorporated into the estimate. However, ZDI is known to underestimate photospheric field strengths due to flux cancellation effects. Recently, Lehmann et al. (2018) conducted synthetic ZDI reconstructions on a set of flux transport simulations to help quantify the amount by which ZDI underestimates the field strengths of relatively slowly rotating and weak activity solar-like stars. In this paper, we evaluate how underestimated angular momentum-loss rate estimates based on ZDI maps may be. We find that they are relatively accurate for stars with strong magnetic fields but may be underestimated by a factor of up to $\sim$10 for stars with weak magnetic fields. Additionally, we re-evaluate our previous work that used ZDI maps to study the relative contributions of different magnetic field modes to angular momentum-loss. We previously found that the dipole component dominates spin-down for most low-mass stars. This conclusion still holds true even in light of the work of Lehmann et al. (2018).
description: 8 pages, 3 figures, 1 table, accepted for publication by ApJ
Leptostiba tambourinensis Pace 2015, spec. nov.
Creators: name: Pace, Roberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Leptostiba
Leptostiba tambourinensis

description: Leptostiba tambourinensis spec. nov.
(Figs 8, 38-40)
 Type material: Holotype , Australia, Queensland, Mt. Tambourine, I.1997, leg. Wachtel.
 Paratypes: 1  and 2 , same data (CSCÜ).
 Description: Length 1.7 mm. Body shiny, yellowishbrown, head and tip of abdomen reddish-brown, antennae brown with the two basal antennomeres and apex of the eleventh yellow, legs yellow. Eyes much shorter than the postocular region in dorsal view. Second antennomere shorter than the first one, third shorter than the second one, fourth to tenth transverse. Fore-body devoid of reticulation, that of the abdomen transverse and very superficial. Head dotting delicate, close and evident. Granulation of pronotum and elytra delicate, close and salient, that of the abdomen delicate, close and clearly visible. Aedeagus as in Figs 38-39; spermatheca as in Fig. 40.
 Comparative notes: For the aedeagus shape the new species is similar to L. politula (FAUVEL, 1878) of which have examined 1 male and 1 female of the type series (IRSNB). The aedeagus of the new species is scarcely curved, while it is broadly curved in politula. The aedeagus, in ventral view, is very wide in politula, narrow in the new species. The proximal portion of the spermatheca of politula shows two sinuosities, while in the new species is without sinuosity. The umbilicus of the distal bulb of the spermatheca is deep in politula, weakly protruded in the new species.
 Etymology: The new species coming its name from Mt. Tambourine.
description: Published as part of Pace, Roberto, 2015, New genera and new species of Aleocharinae from Australia (Coleoptera, Staphylinidae), pp. 327-339 in Beiträge Zur Entomologie = Contributions to Entomology 65 (2) on page 331, DOI: 10.21248/contrib.entomol.65.2.327-339, http://zenodo.org/record/4754013
Resolving Hubble Tension by Self-Interacting Neutrinos with Dirac Seesaw
Creators: name: He, Hong-Jian
name: Ma, Yin-Zhe
name: Zheng, Jiaming
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Self-interacting neutrinos that begin to free-stream at close to matter-radiation equality can reduce the physical size of photon sound horizon at last scattering surface. This mechanism can be the reason why standard $Λ$CDM cosmology sees a lower value of the Hubble constant than local measurements from distance ladder. We propose a new realization of self-interacting Dirac neutrinos (SID$ν$) with light-dark-photon mediator for a viable interaction mechanism. Our model is UV completed by a Dirac seesaw with anomaly-free dark $U(1)_X^{}$ gauge group which charges the right-handed neutrinos. This model naturally generates small masses for Dirac neutrinos and induces self-scattering of right-handed neutrinos. The scattering with left-handed neutrinos is suppressed by a chirality-flip mass insertion when the neutrino energy is much larger than its mass. The resultant neutrino self-scattering is not operative for $E_ν\gtrsim O(\text{keV})$, which avoids the cosmological and laboratory constraints. By evolving Boltzmann equations for left- and right-handed neutrino number densities, we show that about $2/3$ of the left-handed neutrinos are converted into right-handed neutrinos in a short epoch between the Big-Bang Nucleosynthesis and the recombination, and interact with each other efficiently afterwards. The resultant neutrino non-free-streaming is the crucial ingredient to shrink down the comoving sound horizon at drag epoch, which can reconcile the Hubble tension between early and late time measurements.
description: 26 pages, JCAP in press. Only minor refinements, references added. (This update is much delayed due to pandemic situation.)
THE CELTIC TIGER IN HISTORICAL AND INTERNATIONAL PERSPECTIVE
Creators: name: Crafts, Nicholas
name: Crafts, Nicholas
Publisher: name: Unknown
Year: 2008
Subjects: International Relations/Trade
Public Economics

description: When Economic Development was published in 1958, Ireland was a growth failure but thirty years later it became the Celtic Tiger. This paper places this remarkable development in the context of long-run economic growth in Western Europe and establishes the distinctive features of Irish experience and policy. This enables an assessment of the diagnosis and policy proposals that Whitaker provided fifty years ago. The central roles in the Celtic Tiger of foreign direct investment, ICT production, and an elastic labour supply are highlighted while the importance of globalization and the abandonment of misguided autarchic policies is made clear.
Herding and Contrarianism in a Financial Trading Experiment with Endogenous Timing
Creators: name: Park, Andreas
name: Sgroi, Daniel
name: Park, Andreas
name: Sgroi, Daniel
Publisher: name: Unknown
Year: 2008
Subjects: subject: Financial Economics
subject: International Relations/Trade
subject: Herding
subject: Contrarianism
subject: Endogenous-time
subject: Informational Efficiency
subject: Experiments

description: We undertook the first market trading experiments that allowed heterogeneously informed subjects to trade in endogenous time, collecting over 2000 observed trades. Subjects’ decisions were generally in line with the predictions of exogenous-time financial herding theory when that theory is adjusted to allow rational informational herding and contrarianism. While herding and contrarianism did not arise as frequently as predicted by theory, such behavior occurs in a significantly more pronounced manner than in comparable studies with exogenous timing. Types with extreme information traded earliest. Of those with more moderate information, those with signals conducive to contrarianism traded earlier than those with information conducive to herding.
Rounding of probability forecasts: The SPF forecast probabilities of negative output growth
Creators: name: Clements, Michael P.
name: Clements, Michael P.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Research Methods/ Statistical Methods
subject: Rounding
subject: probability forecasts
subject: probability distributions

description: We consider the possibility that respondents to the Survey of Professional Forecasters round their probability forecasts of the event that real output will decline in the future. We make various assumptions about how forecasters round their forecasts, including that individuals have constant patterns of responses across forecasts. Our primary interests are the impact of rounding on assessments of the internal consistency of the probability forecasts of a decline in real output and the histograms for annual real output growth, and on the relationship between the probability forecasts and the point forecasts of quarterly output growth.