cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hadron mass corrections in semi-inclusive deep inelastic scattering
Creators: name: Accardi, A.
name: Hobbs, T.
name: Melnitchouk, W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We derive mass corrections for semi-inclusive deep inelastic scattering of leptons from nucleons using a collinear factorization framework which incorporates the initial state mass of the target nucleon and the final state mass of the produced hadron. The formalism is constructed specifically to ensure that physical kinematic thresholds for the semi-inclusive process are explicitly respected. A systematic study of the kinematic dependencies of the mass corrections to semi-inclusive cross sections reveals that these are even larger than for inclusive structure functions, especially at very small and very large hadron momentum fractions. The hadron mass corrections compete with the experimental uncertainties at kinematics typical of current facilities, and will be important to efforts at extracting parton distributions or fragmentation functions from semi-inclusive processes at intermediate energies.
description: 22 pages, 6 figures; expanded discussion of kinematics and new scaling variable; appendix comparing collinear frames included; version to appear in JHEP
ASHTARXONIY QOSIM SULTON KIM EDI?
Creators: name: Sherxon QORAYEV, Qarshi shahridagi Xalqaro innovatsion universiteti dotsenti, filologiya fanlari bo'yicha falsafa doktori (PhD).
Publisher: name: Zenodo
Year: 2024

description: Manbalarga ko‘ra, Qosim Sulton ibn Xusrav Sulton ibn Nadrmuhammadxon – Buxoroda hukmronlik qilgan ashtarxoniylar sulolasining mashhur shoirlaridan biri bo‘lgan. U amakisi Abdulazizxon davrida Hisori Shodmon viloyatida hokimlik qilgan. Mutafakkir Sadriddin Ayniy “Namunai adabiyoti tojik” tazkirasida ashtarxoniylar xonadonidan bo‘lgan sohibdevon shoir Qosimxon sulton ijodiga alohida to‘xtalgan
Universal phase diagram of disordered bosons from a doped quantum magnet
Creators: name: Yu, Rong
name: Haas, Stephan
name: Roscilde, Tommaso
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A quantum particle cannot in general diffuse through a disordered medium because of its wavelike nature, but interacting particles can escape localization by collectively percolating through the system. For bosonic particles this phenomenon corresponds to a quantum transition from a localized insulator phase - the Bose glass - to a superfluid phase, in which particles condense into an extended state. Here, we construct a universal phase diagram of disordered bosons in doped quantum magnets for which bosonic quasi-particles are represented by magnetized states (spin triplets) of the quantum spins, condensing into a magnetically ordered state. The appearance of a Bose glass leads to strong measurable signatures in the onset of superfluidity of the spin-triplet gas, exhibiting a complex crossover from low-temperature quantum percolation to a conventional condensation transition at intermediate temperatures.
description: 4 pages, 4 figures
title: Dr. Robert J.T. Joy, MD, FACP, COL, MC, USA (Ret.) Oral History Interview Transcript Part 2
Creators: name: Uniformed Services University of the Health Sciences
Publisher: name: University Archives, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
Year: 2007
Subjects: classificationCode: 3
subject: FOS: Medical and health sciences
classificationCode: 6.1
subject: FOS: History and archaeology

description: USU Oral History Interview Transcript
Dr. Robert J.T. Joy, MD, FACP, COL, MC, USA (Ret.)
First Chairman of the Department of Military Medicine & History
First Commandant of Students
First Professor and Chair, Department of Medical History
Emeritus Professor, Department of Medical
c. 2007
Interviewed by Karen Caron
A High Spatial Resolution Mid-Infrared Spectroscopic Study of the Nuclei and Star-Forming Regions in Luminous Infrared Galaxies
Creators: name: Diaz-Santos, T.
name: Alonso-Herrero, A.
name: Colina, L.
name: Packham, C.
name: Levenson, N. A.
name: Pereira-Santaella, M.
name: Roche, P. F.
name: Telesco, C. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a high spatial (diffraction-limited) resolution (~0.3") mid-infrared (MIR) spectroscopic study of the nuclei and star-forming regions of 4 local luminous infrared galaxies (LIRGs) using T-ReCS on the Gemini South telescope. We investigate the spatial variations of the features seen in the N-band spectra of LIRGs on scales of ~100 pc, which allow us to separate the AGN emission from that of the star formation (SF). We compare our Gemini T-ReCS nuclear and integrated spectra of LIRGs with those obtained with Spitzer IRS. The 9.7um silicate absorption feature is weaker in the nuclei of the LIRGs than in the surrounding regions. This is probably due to the either clumpy or compact environment of the central AGN or young, nuclear starburst. We find that the [NeII] luminosity surface density is tightly and directly correlated with that of Pa-alpha for the LIRG star-forming regions (slope of 1.00+-0.02). Although the 11.3um PAH feature shows also a trend with Pa-alpha, this is not common for all the regions. We also find that the [NeII]\Pa-alpha ratio does not depend on the Pa-alpha equivalent width (EW), i.e., on the age of the ionizing stellar populations, suggesting that, on the scales probed here, the [NeII] emission line is a good tracer of the SF activity in LIRGs. On the other hand, the 11.3um PAH\Pa-alpha ratio increases for smaller values of the Pa-alpha EW (increasing ages), indicating that the 11.3um PAH feature can also be excited by older stars than those responsible for the Pa-alpha emission. Additional high spatial resolution observations are essential to investigate, in a statistical way, the star formation in local LIRGs at the smallest scales and to probe ultimately whether they share the same physical properties as high-z LIRGs, ULIRGs and submillimiter galaxies.
description: 23 pages (apjstyle), 19 figures, accepted for publicacion in ApJ
Deterministic Walks in Quenched Random Environments of Chaotic Maps
Creators: name: Simula, Tapio
name: Stenlund, Mikko
Publisher: name: arXiv
Year: 2009
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60F05, 37D20, 82C41, 82D30

description: This paper concerns the propagation of particles through a quenched random medium. In the one- and two-dimensional models considered, the local dynamics is given by expanding circle maps and hyperbolic toral automorphisms, respectively. The particle motion in both models is chaotic and found to fluctuate about a linear drift. In the proper scaling limit, the cumulative distribution function of the fluctuations converges to a Gaussian one with system dependent variance while the density function shows no convergence to any function. We have verified our analytical results using extreme precision numerical computations.
description: 18 pages, 9 figures
Robust creation of entangled states of two coupled flux qubits via dynamic control of the transition frequencies
Creators: name: Xia, K.
name: Macovei, M.
name: Evers, J.
name: Keitel, C. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Coherent control and the creation of entangled states are discussed in a system of two superconducting flux qubits interacting with each other through their mutual inductance and identically coupling to a reservoir of harmonic oscillators. We present different schemes using continuous-wave control fields or Stark-chirped rapid adiabatic passages, both of which rely on a dynamic control of the qubit transition frequencies via the external bias flux in order to maximize the fidelity of the target states. For comparison, also special area pulse schemes are discussed. The qubits are operated around the optimum point, and decoherence is modelled via a bath of harmonic oscillators. As our main result, we achieve controlled robust creation of different Bell states consisting of the collective ground and excited state of the two-qubit system.
description: 10 pages, 8 figures
Water metering in Hobart-An appraisal of the cost-benefit study
Creators: name: Kumar, A
Publisher: name: University Of Tasmania
Year: 2023

description: Hobart is the only capital city in Australia where water is supplied to the consumers unmetered. A flat rate is charged annually in return for which consumers may take virtually unlimited water. There seems to be a prevalent belief that water should not be sold to the community of Hobart on the basis of consumption because of the natural abundance of water in Tasmania. This view is reflected in the 'requirements approach' used by the Metropolitan Water Board in planning supply expansions. What is little realised is that the source of Hobart's water (although virtually inexhaustible) is situated a fairly great distance away from the metropolitan area. Transporting water through pipelines over long distances is not a cost-less affair and by virtue of this fact, water must be looked upon and treated as an economic good. This study has a three-fold objective. Firstly, it is to examine the efficacy of the present investment criteria used by the Metropolitan Water Board. The potential of the requirements approoch to allocate society's resources efficiently is assessed. The price variable is suggested as a means of exercising water demand management and the second objective is to compare the efficiency of a marginal cost pricing approach with the requirements approach in 0 tel~s of resource allocation.Finally, no matter how superior a marginal cost pricing policy may be to the present flat-rate policy theoretically, it needs to be proven that the costs involved in implementing such a scheme do not outweigh the benefits. To this end, a cost-benefit analysis is conducted to determine whether or-not universal metering should be introduced in Hobart.The cost-benefit analysis implicitly compares the two alternatives available to water authorities to meet demand after 1978/9 when the present supply is expected to reach full capacity.
A simulational and theoretical study of the spherical electrical double layer for a size-asymmetric electrolyte: the case of big coions
Creators: name: Guerrero-García, G. I.
name: González-Tovar, E.
name: Chávez-Páez, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Monte Carlo simulations of a spherical macroion, surrounded by a size-asymmetric electrolyte in the primitive model, were performed. We considered 1:1 and 2:2 salts with a size ratio of 2 (i.e., with coions twice the size of counterions), for several surface charge densities of the macrosphere. The radial distribution functions, electrostatic potential at the Helmholtz surfaces, and integrated charge are reported. We compare these simulational data with original results obtained from the Ornstein-Zernike integral equation, supplemented by the hypernetted chain/hypernetted chain (HNC/HNC) and hypernetted chain/mean spherical approximation (HNC/MSA) closures, and with the corresponding calculations using the modified Gouy-Chapman and unequal-radius modified Gouy-Chapman theories. The HNC/HNC and HNC/MSA integral equations formalisms show good concordance with Monte Carlo "experiments", whereas the notable limitations of point-ion approaches are evidenced. Most importantly, the simulations confirm our previous theoretical predictions of the non-dominance of the counterions in the size-asymmetric spherical electrical double layer [J. Chem. Phys. 123, 034703 (2005)], the appearance of anomalous curvatures at the outer Helmholtz plane and the enhancement of charge reversal and screening at high colloidal surface charge densities due to the ionic size asymmetry.
description: 11 pages, 7 figures
Entropy for theories with indefinite causal structure
Creators: name: Markes, Sonia
name: Hardy, Lucien
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Entropy is a concept that has traditionally been reliant on a definite notion of causality. However, without a definite notion of causality, the concept of entropy is not all lost. Indefinite causal structure results from combining probabilistic predictions and dynamical space-time. Combining the probabilistic nature of quantum theory and dynamical treatment space-time from general relativity is an approach to the problem of quantum gravity. The causaloid framework lays the mathematical groundwork to be able to treat indefinite causal structure. In this paper, we build on the causaloid mathematics and define a causally-unbiased entropy for an indefinite causal structure. In defining a causally-unbiased entropy, there comes about an emergent idea of causality in the form of a measure of causal connectedness, termed the Q factor.
description: 11 pages, 2 figures
Through the rainbow looking glass: Exploration of the impact of gay community and media exposure on body image, depression and controlling physical appearance in gay men
Creators: name: Adams, M
Publisher: name: University Of Tasmania
Year: 2023

description: Results from the literature have shown that gay men report greater susceptibility to appearance manipulation. There is a paucity of research examining factors that influence body image perception for gay men and that exposure to idealised media imagery may play a role in decreased satisfaction with appearance. The current study aimed to explore the relationships between gay identity variables (gay community involvement, gay media exposure, muscular/weight concerns) and body modification behaviours (eating restriction and obligatory/excessive exercise) and depression in a sample of 260 gay men recruited from Australian, American and British gay organisations or interest groups. The study utilised the The Multidimensional Body-Self Relations Questionnaire ‚Äö- Appearance Scales, Masculine Body Ideal Distress Scale, Eating Disorder Examination Questionnaire, Obligatory Exercise Questionnaire, K10, and experimenter derived Identification and Involvement with the Gay Community Scale. Using a path model between these variables, results showed strong and moderate effects between overweight preoccupation and restricted eating (˜í‚â§ =.70) and muscular dissatisfaction and obligatory exercise (˜í‚â§ =.47). A small significant effect was found between gay media exposure and overweight preoccupation (˜í‚â§ =.17), while involvement in the gay community was related to a significant decrease in depressive symptoms (˜í‚â§ = -.21). Results suggest that greater exposure to gay community media may relate to concerns about being fat. Higher levels of weight and muscle dissatisfaction may also relate to eating pathology risk and pathological exercise in order to conform to an idealised body. This is the first study to examine trimness and muscularity alongside two modification behaviours in gay men. The results suggest that gay men's body image is related to their perceptions of both bodyweight and satisfaction with levels of muscle tone. Findings also suggest involvement in the gay community is associated with reduced mood problems in gay men, though the mechanism for this is not clear. The clinical implications of the findings are that psychologists working with gay male clients who present with body image difficulties should be mindful that the relationship between exercise fixation and eating problems needs to be assessed. Future research should explore whether gay men from specific gay subcultures (which value different forms of appearance) are subject to similar forms of body manipulation.
MPEC 2024-S107 : 2024 SK2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 SK2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
A Fast Chi-squared Technique For Period Search of Irregularly Sampled Data
Creators: name: Palmer, David M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: A new, computationally- and statistically-efficient algorithm, the Fast $χ^2$ algorithm, can find a periodic signal with harmonic content in irregularly-sampled data with non-uniform errors. The algorithm calculates the minimized $χ^2$ as a function of frequency at the desired number of harmonics, using Fast Fourier Transforms to provide $O (N \log N)$ performance. The code for a reference implementation is provided.
description: Source code for the reference implementation is available at http://public.lanl.gov/palmer/fastchi.html . Accepted by ApJ. 24 pages, 4 figures
Effects of temperature and photoperiod on the duration of larval development in three species of Odonata.
Creators: name: Procter, Dennis Lester Coor
Publisher: name: University of British Columbia
Year: 2011

description: Corbet has recognised two ecological types of Odonata from temperate regions. He has termed these "spring" and "summer" species, depending upon the presence of a diapause in the final instar. Species possessing a diapause in the final instar are by definition spring species. Corbet believes that spring and summer species represent stages in the colonisation of high latitudes from the tropics. He considers that spring species represent the final stage in adaptation to cold climates, becuase the diapause confers cold resistance on the final instar, and synchronises the short adult life after the relatively long larval period caused by the low temperatures. This study tested several hypotheses arising from Corbet's scheme: (1) Corbet's assumption that spring species develop more slowly (i.e., have lower thermal coefficients for development) at high temperatures than summer species; (2) Corbet's assumption that spring species are more tolerant of low temperature than summer species, and (3) the hypothesis proposed in this study that spring species make the most general use of photoperiod in regulating development. The nymphs of three species of Odonata, Enallagma boreale, Leucorrhinia glacialis and Libellula quadramaculata, were reared under a number of combinations of temperature (10, 15, 20, 25 C) and photoperiod (6, 9, 12, 15, 18 hr). Enallagma boreale, the summer species, developed more rapidly than the two spring species at every temperature. This result supports Corbet's hypothesis that summer species have higher thermal coefficients for growth than do spring species, but does not support his hypothesis that spring species are more tolerant of low temperatures. Photoperiod significantly affected the rate of development in Leucorrhinia glacialis and Libellula quadramaculata at 10 C and 15 C, but Enallagma boreale was not affected by photoperiod at any temperature. This result supports the hypothesis that species from high latitudes (spring species) are more likely to utilise photoperiod in regulating development. Preliminary results suggest that Leucorrhinia glacialis is capable of continuously variable growth rate response to photoperiod. This is the first time that this response has been recorded in an arthropod.
Intrinsic color indices and luminosity sequences of stars in the 2MASS two-color diagram
Creators: name: Straizys, V.
name: Lazauskaite, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Intrinsic sequences of luminosity V and III stars in the J-H vs. H-Ks diagram of the 2MASS system are determined using about 1250 unreddened and dereddened stars. Intrinsic color indices for MK spectral classes are tabulated and compared with the results in other JHK systems.
description: 13 pages, 8 figures, 3 tables
ENTREPRENEURIAL COMPETENCIES AND THEIR EFFECT ON SME GROWTH IN ENUGU METROPOLIS
Creators: name: Ngozi, Amarachi Eze
name: Uchenna, Obiora Nwosu
Publisher: name: AYDEN JOURNAL
Year: 2024
Subjects: Entrepreneurial Competencies, SME Growth

description: The study evaluated the effect of entrepreneurial skills on the performance of small and medium enterprises in Enugu state. The specific objective was to: examine the effect of leadership skills on the output of SMEs and evaluate the effect of networking skills on the profits making of SMEs in Enugu metropolis. The area of the study was Enugu Metropolis.  Two hundred and seventy-three (273) business owners and employees were selected for the study. The study used the descriptive survey design approach. The primary source of data was the administration of questionnaire. Two hundred and fifty-three (253) respondents returned their questionnaire and accurately filled. Data was presented and analyzed by mean score and standard deviation using Sprint Likert Scale. The hypotheses were analyzed using Z - test statistic tool. The findings indicated that Leadership skills had significant positive effect on the output of SMEs in Enugu metropolis, Z (95, n = 272), 7.034 < 9.944, P. <.05 and Networking skills had significant positive effect on the profits making of SMEs in Enugu metropolis, Z(95, n = 272), 7.034 < 9.944,  P. <.05. The study concluded that Leadership skills and Networking skills had significant positive effect on the output and profits making t of SMEs in Enugu metropolis.  The study recommended among others that the owners or management of the small and medium enterprises should provide direction and vision, motivate and inspire others, and help create an environment conducive to success by promoting communication and collaboration among team members
title: Dr. Robert J.T. Joy, MD, FACP, COL, MC, USA (Ret.) Oral History Interview Transcript Part 3
Creators: name: Uniformed Services University of the Health Sciences
Publisher: name: University Archives, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
Year: 2007
Subjects: classificationCode: 3
subject: FOS: Medical and health sciences
classificationCode: 6.1
subject: FOS: History and archaeology

description: USU Oral History Interview Transcript
Dr. Robert J.T. Joy, MD, FACP, COL, MC, USA (Ret.)
First Chairman of the Department of Military Medicine & History
First Commandant of Students
First Professor and Chair, Department of Medical History
Emeritus Professor, Department of Medical History
c. 2007
Interviewed by Karen Caron
Διαταραχή Ακουστικής Επεξεργασίας και Προσοχή σε παιδιά
Creators: name: Κεραμάρη, Ευλαμπία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: Διαταραχή Ακουστικής επεξεργασίας
Μηχανισμοί Προσοχής
Παιδιά
Auditory Processing Disorder
Attention mechanisms
Children

description: Η παρούσα μελέτη διερευνά την σχέση μεταξύ της Διαταραχής Ακουστικής Επεξεργασίας (ΔΑΕ) και των μηχανισμών προσοχής σε παιδιά. Η ΔΑΕ, μια σύνθετη κατάσταση που χαρακτηρίζεται από την αδυναμία του εγκεφάλου να επεξεργάζεται αποτελεσματικά τις ακουστικές πληροφορίες, συχνά συνυπάρχει με ελλείμματα προσοχής, επηρεάζοντας την εκπαιδευτική και κοινωνική απόδοση των παιδιών. Παρά την τυπική οξύτητα της ακοής, τα παιδιά με ΔΑΕ δυσκολεύονται να κατανοήσουν την ομιλία, ιδιαίτερα σε θορυβώδη περιβάλλοντα, γεγονός που μπορεί να οδηγήσει σε γνωστική υπερφόρτωση και μειωμένη ικανότητα προσοχής. Αυτή η έρευνα συνθέτει ευρήματα από διάφορες μελέτες για να διαφανεί πώς η ΔΑΕ επηρεάζει την προσοχή στα παιδιά σε διαφορετικά περιβάλλοντα, ιδιαίτερα σε εκπαιδευτικά περιβάλλοντα. Μέσα από την βιβλιογραφική ανασκόπηση, ανάλυση δεδομένων και σύνθεση υπάρχουσας έρευνας, αυτή η μελέτη αποκαλύπτει την πολυπλοκότητα της ΔΑΕ και τον αντίκτυπό της στις διαδικασίες προσοχής. Τα ευρήματα υπογραμμίζουν την αναγκαιότητα στοχευμένων στρατηγικών παρέμβασης και τη σημασία της προσαρμογής εκπαιδευτικών περιβαλλόντων για την υποστήριξη των παιδιών με ΔΑΕ, ενισχύοντας έτσι τα μαθησιακά τους αποτελέσματα και τη συνολική γνωστική τους ανάπτυξη.
description: This thesis explores the intricate relationship between Auditory Processing Disorder (APD) and attention mechanisms in children. APD, a complex condition characterized by the brain's inability to effectively process auditory information, often coexists with attention deficits, affecting children’s educational and social performance. Despite typical hearing acuity, children with APD struggle with understanding speech, particularly in noisy environments, which may lead to cognitive overload and reduced attention capacity. This research synthesizes findings from various studies to understand how APD influences attention in children across different environments, particularly educational settings. Through a comprehensive literature review, data analysis, and synthesis of existing research, this study aims to unravel the complexities of APD and its impact on attention processes. The findings underscore the necessity of targeted intervention strategies and the importance of accommodating educational environments to support children with APD, thus enhancing their learning outcomes and overall cognitive development.
Kinematical correlations: from RHIC to LHC
Creators: name: Szczurek, Antoni
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Kinematical correlations between outgoing partons (elementary particles) are discussed in the framework of $k_t$-factorization. Different unintegrated gluon distributions are used. I discuss correlations between charm-anticharm, jets, photon and jet, and between leptons from semileptonic decays of heavy quarks as well as leptons produced in the Drell-Yan mechanism. Both correlations in azimuth as well as in the length of transverse momenta are shown. General conclusions are drawn.
description: 8 pages, 8 figures invited talk at the international workshop "High-pT Physics at LHC", Tokaj, Hungary, 16-19 March 2008
Spectral Evolution Models for the Next Decade
Creators: name: Leitherer, Claus
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Spectral evolution models are a widely used tool for determining the stellar content of galaxies. I provide a review of the latest developments in stellar atmosphere and evolution models, with an emphasis on massive stars. In contrast to the situation for low- and intermediate mass stars, the current main challenge for spectral synthesis models are the uncertainties and rapid revision of current stellar evolution models. Spectral libraries, in particular those drawn from theoretical model atmospheres for hot stars, are relatively mature and can complement empirical templates for larger parameter space coverage. I introduce a new ultraviolet spectral library based on theoretical radiation-hydrodynamic atmospheres for hot massive stars. Application of this library to star-forming galaxies at high redshift, i.e., Lyman-break galaxies, will provide new insights into the abundances, initial mass function and ages of stars in the very early universe.
description: 8 pages, to appear in IAU Symp. 262, Stellar Populations - Planning for the Next Decade, eds. G. Bruzual & S. Charlot
Nonlinear envelope equation for broadband optical pulses in quadratic media
Creators: name: Conforti, Matteo
name: Baronio, Fabio
name: De Angelis, Costantino
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We derive a nonlinear envelope equation to describe the propagation of broadband optical pulses in second order nonlinear materials. The equation is first order in the propagation coordinate and is valid for arbitrarily wide pulse bandwidth. Our approach goes beyond the usual coupled wave description of $χ^{(2)}$ phenomena and provides an accurate modelling of the evolution of ultra-broadband pulses also when the separation into different coupled frequency components is not possible or not profitable.
Paradox as catalyst : art, ephemera, installation, activism, festival and environmental critique
Creators: name: Anglesey, JN
Publisher: name: University Of Tasmania
Year: 2023

description: This project investigates site-specific, ephemeral installation with environmental discourse. The exploration began in response to factional debates surrounding the proposed Tamar Valley Gunns Paper Pulp Mill, which involved clear-fell logging and subsequent degradation of water catchment areas. Tasmania is a site for continuous factional debates surrounding environmental protection and potentially ecological destructive commercial ventures. The scope of this project has emerged from the conflict evidenced through human interaction with planet Earth's finite resources and lack of respect for global ecological fragility. References to every-day objects, popular symbolism, the beautiful and the sublime are calculated to inspire awe and deep reverence. The work's beauty and/or grandeur lures audience to an initial engagement and uses metaphorical titles to reference concepts and discourses. The works employ a variety of techniques and site determines scale. As the project developed, the tree, as subject and art object, became a primary focus. Some works were placed in bush settings only accessible by foot, allowing for a holistic saturation of the senses to accompany the experience. This strategy was intended to inspire a connection with nature. To further highlight environmental critique, community space and the landscapes attached to eco-festivals were ideal sites for the works. This included festivals with a visual art focus and festivals with a music and arts focus supported by an eco-sustainability ethos. Installing in public and the organised artist talks included in some of the festivals, added to the didactic and scope for activism. The exegesis provides the context for this investigation. It examines art and environmental critique, land art, earth art and environmental art in historical context, ephemera, installation, sustainable practice, festival and the public sphere.
Last Will and Testament of James Loper, Executor Isaac Edwards, Witness by Thomas Tredwell, April 2, 1790
Creators: name: Loper, James
name: Tredwell, Thomas
name: Edwards, Isaac
Publisher: name: Unknown
Year: 1790
Subjects: Edwards Family
Wills
Probate records

description: Last Will and Testament of James Loper, Executor Isaac Edwards, Witness by Thomas Tredwell, April 2, 1790. This item is part of the Isaac Edwards Deed Collection, donated by Bess Rattray in December 2020.
Inedible Offal as a Hog Feed: Processing and Feeding by Small Slaughterers
Creators: name: Miner, Bert D.
name: Miner, Bert D.
Publisher: name: Unknown
Year: 1957
Subjects: Agribusiness
Livestock Production/Industries
Production Economics
Research and Development/Tech Change/Emerging Technologies

description: Excerpts from the report: Processing inedible offal into animal feed has been a regular part of the operations of large-scale packers. Until recently, however, few small-scale slaughterers had been able to salvage this product profitably in this manner. With new methods these plants can now profitably cook it for swine feed. The Farmer Cooperative Service has received requests for research to help small-scale slaughter plants improve their utilization and disposal of inedible offal from individual locker operators, State frozen food locker associations, the National Institute of Locker and Freezer Provisioners and several colleges and universities. The objectives of this study were: (1) To ascertain the scope and importance of the problem, and (2) to obtain information on present methods being used by a representative group of slaughter plants that are processing inedible offal.
Single-Phase Flow of Non-Newtonian Fluids in Porous Media
Creators: name: Sochi, Taha
Publisher: name: arXiv
Year: 2009
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The study of flow of non-Newtonian fluids in porous media is very important and serves a wide variety of practical applications in processes such as enhanced oil recovery from underground reservoirs, filtration of polymer solutions and soil remediation through the removal of liquid pollutants. These fluids occur in diverse natural and synthetic forms and can be regarded as the rule rather than the exception. They show very complex strain and time dependent behavior and may have initial yield-stress. Their common feature is that they do not obey the simple Newtonian relation of proportionality between stress and rate of deformation. Non-Newtonian fluids are generally classified into three main categories: time-independent whose strain rate solely depends on the instantaneous stress, time-dependent whose strain rate is a function of both magnitude and duration of the applied stress and viscoelastic which shows partial elastic recovery on removal of the deforming stress and usually demonstrates both time and strain dependency. In this article the key aspects of these fluids are reviewed with particular emphasis on single-phase flow through porous media. The four main approaches for describing the flow in porous media are examined and assessed. These are: continuum models, bundle of tubes models, numerical methods and pore-scale network modeling.
description: 94 pages, 12 figures, 1 table
Inventory Management by Selected Retail Farm Supply Co-ops (Area I - Michigan, Indiana, Ohio, Pennsylvania)
Creators: name: Bailey, John M.
name: Bailey, John M.
Publisher: name: Unknown
Year: 1958
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business

description: Excerpts from the report: This study is the initial one of a series Farmer Cooperative Service is making of inventory management by general farm supply cooperatives in various geographic areas of the United States. It endeavors to: 1. Determine purchasing policies and practices that affect inventory acquisition; 2. Ascertain successful practices for storing and controlling inventories and shrinkage in merchandise; 3. Determine principal sales methods affecting inventory turnover, especially those for slow-moving merchandise; and 4. Recommend successful standards and methods for inventory management.
title: Philosophers and artisans : the relationship between men of science and instrument makers in London 1820-1860.
Creators: name: Ginn, William Thomas
Publisher: name: University of Kent
Year: 2021

description: This thesis examines the changed status of the instrument maker in the London-based scientific community of the nineteenth century, compared with the eighteenth century, and seeks to account for the difference. Chapter 1 establishes that the eighteenth-century maker could aspire to full membership of the scientific community. The following chapters show that this became impossible by the period 1820-1860. Among reasons suggested for the change are that the instrument maker's educational context to some extent precluded him from contributing to scientific innovation, and also the changed market for his products in an industrial Britain required that he devote more time to his business, thus decreasing the time available to pursue new developments. However, the decline is attributed mainly to the tendency of the scientific community to refine its own criteria of membership, in an era in which its self-consciousness as a distinct group increased, and its members articulated claims to status in terms of their value to the State. This ideology and its consequences are analysed in a number of studies. Chapter 2 deals with the burgeoning of collective identity in the context of the Royal Society, while the next four chapters study individual members of the scientific elite - Wheatstone, Babbage, Airy and Faraday, and their relationships with instrument makers. The studies demonstrate that the philosopher recognised the artisan's work as important, but not as vital as his own, and not classifiable as scientific work. As an institutional manifestation of the motives of the leading philosophers, the B.A.A.S. is the focus of Chapter 7. The final case study centres on the maker's tactics of self-promotion in business terms, thus linking more fully the factors at work in ensuring the rise of the philosopher and the decline in status of the artisan in the scientific community.
The filled pause and social aspects of conversations.
Creators: name: Ball, Peter John
Publisher: name: University Of Tasmania
Year: 2023

description: Selected developments in the fields of verbal and nonverbal behaviour are reviewed, with especial reference to the study of speech in social context. Among features bordering on both language studies and social psychology are hesitations and disruptions in speech. Silent pauses have been found to result from need to plan verbal sequences and a miscellaneous group of speech disruptions known as NonAhs is a sign of topical anxiety. Filled pauses ('er', 'um' and variants, also called Ahs) were first thought to belong with NonAhs but have proved unrelated to anxiety and require a separate explanation. One hypothesis, that they have an interpersonal role in apportioning the conversational floor, has fared inconclusively under test and recent writers have written it off. In two experiments, filled pause rate was measured as a dependent variable. Mutual visibility in dyadic conversations was varied from zero through intermediate levels to normal, but no changes were observed. When an interviewer's tendency to interrupt was varied, again no significant differences in Ah rate were recorded. However, the filled pause as an independent variable elicited effects supportive of the floor control hypothesis. 'Matched guise' recordings of a speaker were heard by independent groups of undergraduates and presence of Ahs yielded ratings of speaker anxiety, caution and submissiveness, consistent with either the discredited anxiety hypothesis or that of floor control. In a final experiment, naive subjects each interviewed a person whose answers varied in grammatical completion and whether they terminated with Ahs. Either grammatical incompletion, an Ah or both prolonged latencies of subjects' next question substantially. The view that conversations are competitions for the floor is rejected for a broader outlook on interpersonal regulatory cues. Ahs probably do act in floor control, but less simply than previously thought and they may have other, non-regulatory roles besides. Avenues for future research on the topic are outlined with methodological suggestions and the work is presented within a suggested systematisation of accumulating knowledge about interrelationships between linguistic features at several structural levels and various aspects of social behaviour.
Some aspects of the behavioural ecology of two amphipod species in Marion Lake, British Columbia
Creators: name: Bryan, Anthea D.
Publisher: name: University of British Columbia
Year: 2011

description: Two benthic amphipod species (Crangonyx richmondensis var occidentalis Hubricht and Harrison and Hyalella azteca Saussure) live together in Marion Lake, but, as previous workers have shown, differ markedly in the distribution of their numbers. The aim of the study was to compare the behaviour of the two species and to see if any differences might account for the differences in distribution. Particular attention was paid to movement and feeding behaviour. Crangonyx was equally abundant on the bottom at all depths in the lake; Hyalella was abundant in the shallows (1m) and scarce in the deeper waters ( 3 m). Numbers of each species differed among areas in the lake. Crangonyx usually moved by crawling over the mud, and seldom swam. It seemed to find food by its smell or motion or both, and to recognize food by touch or taste. It attacked living prey by pouncing on it and grasping it with its gnatho-pods. In contrast, Hyalella moved mainly in a series of swims and pauses. Hyalella fed by grazing on the mud and rooted aquatics, and ingesting detritus. Both species moved away from sources of light. When food was present in various distributions, the search patterns of Crangonyx differed: some animals turned back and thoroughly searched the area where they had just found food; others crawled along a relatively straight path; yet others behaved in an intermediate manner. In general, Crangonyx seemed to be quicker at finding clumped food than uniformly distributed food. In the absence of food, some individual Crangonyx turned more than others. Hyalella searched by swimming, pausing on a surface, and remaining where food was present. Probably neither species moves frequently between depth zones, although both species are mobile enough to do so. Marked amphipods placed at 1 - and 3-m depths in the lake were recaptured in samples taken 1 and 4 m from the release point after an hour. Fewer marked amphipods of either species were recaptured in the deep area than in the shallow area, indicating that they left the deep area faster. Of the behavioural differences noted, only the difference in feeding habits between the species seems likely to account, at least in part, for the difference in the distribution of their numbers. Recent work by Dr. Hargrave has shown that epibenthic algal production decreases with depth, though not as sharply as Hyalella numbers. In laboratory substrate-choice experiments, Hyalella chose areas of abundant food. Its assimilation efficiency and growth differed when it fed on different sediment microflora. Dr. Gruendling found that the abundance of the algal groups in Marion Lake differed with depth. The distribution of Hyalella may be related to the distribution of certain species of algae in its diet. The distribution of food for Crangonyx is unknown.
Anomalous avoided level crossings in a Cooper-pair box spectrum
Creators: name: Kim, Z.
name: Zaretskey, V.
name: Yoon, Y.
name: Schneiderman, J. F.
name: Shaw, M. D.
name: Echternach, P. M.
name: Wellstood, F. C.
name: Palmer, B. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We have observed a few distinct anomalous avoided level crossings and voltage dependent transitions in the excited state spectrum of an Al/AlOx/Al Cooper-pair box (CPB). The device was measured at 40 mK in the 15 - 50 GHz frequency range. We find that a given level crosses the CPB spectrum at two different gate voltages; the frequency and splitting size of the two crossings differ and the splitting size depends on the Josephson energy of the CPB. We show that this behavior is not only consistent with the CPB being coupled to discrete charged "two-level" quantum systems which move atomic distances in the CPB junctions but that the spectra provide new information about the fluctuators, which is not available from phase qubit spectra of anomalous avoided levels. In particular by fitting a model Hamiltonian to our data, we extract microscopic parameters for each fluctuator, including well asymmetry, tunneling amplitude, and the minimum hopping distance for each fluctuator. The tunneling rates range from less than 3.5 to 13 GHz, which represent values between 5% and 150% of the well asymmetry, and the dipole moments give a minimum hopping distance of 0.3 to 0.8 Anstrom. We have also found that these discrete two-level systems have a pronounced effect on the relaxation time (T1) of the quantum states of the CPB and hence can be a source of dissipation for superconducting quantum bits.
Origin of Weak-Link Behavior of Grain Boundaries in Superconducting Cuprates and Pnictides
Creators: name: Deutscher, Guy
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Superconducting cuprates and pnictides composed of CuO2 or AsFe planes respectively with intercalated insulating layers, are at the crossroads of three families of crystalline solids: metals, doped Mott insulators, and ferroelectrics. In the latter atomic displacements play a key role. Both the metallic and the doped insulator approaches to high temperature superconductivity are essentially electronic ones and do not directly involve the lattice. By contrast, in a recently proposed Bond Contraction Pairing (BCP) model, contraction of in-plane Cu-O (or As-Fe) bonds plays an essential role in the pairing mechanism. Here we apply it to low angle grain boundaries and show that their reduced critical current is due to tensile deformation generated by dislocations. The model also explains why interface misfit dislocations, which can result in a dead layer in the case of ferro-electrics, may improve vortex pinning in the cuprates.
BOBURIY NOSIRIDDIN MUHAMMADSHOHGA XIZMAT QILGAN ASHTARXONIY SHAHZODA
Creators: name: Sherxon QORAYEV, Qarshi shahridagi Xalqaro innovatsion universiteti dotsenti, filologiya fanlari bo'yicha falsafa doktori (PhD).
Publisher: name: Zenodo
Year: 2024

description: 1731 yilda ashtarxoniylar sulolasiga mansub bo‘lgan shahzoda Xoji Mir Muhammad Salim Sulton tomonidan “Silsilat us-salotin” (“Sultonlar silsilasi”) nomli tarixiy asar yozilgan.[1] U O‘rta Osiyoning XVI-XVIII – asr birinchi choragi tarixiga bag‘ishlanadi. Akademik Bo‘riboy Ahmedovning yozishicha, “Silsilat us-salotin” kam o‘rganilgan, qiziqarli asardir. Uning (hozircha) Bodleyan kutubxonasi (Buyuk Britaniya)da saqlanayotgan yagona nusxasi aniqlangan.[2] Ushbu kutubxonada  № 269 raqam ostida saqlanmoqda

[1]Мирзаев Б., Мажидов А. Манбашунослик (XVI – XIX асрнинг биринчи ярми). Т.: “Фамус Пресс”, 2022.-Б.27-29.

[2] Аҳмедов Б. Тарихдан сабоқлар. Т.: Ўқитувчи, 1994.-Б.188.
Moving boundary approximation for curved streamer ionization fronts: Numerical tests
Creators: name: Brau, Fabian
name: Luque, Alejandro
name: Davidovitch, Benny
name: Ebert, Ute
Publisher: name: arXiv
Year: 2009
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Recently a moving boundary approximation for the minimal model for negative streamer ionization fronts was extended with effects due to front curvature; this was done through a systematic solvability analysis. A central prediction of this analysis is the existence of a nonvanishing electric field in the streamer interior, whose value is proportional to the front curvature. In this paper we compare this result and other predictions of the solvability analysis with numerical simulations of the minimal model.
description: 8 pages, 8 figures