cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rosemary Dobson and David Campbell : an introduction
Creators: name: Andrewartha, SM
Publisher: name: University Of Tasmania
Year: 2023

description: The early 1940s saw an impetus in poetry writing in Australia and two poets to emerge at that time, Rosemary Dobson and David Campbell, were seen as representative of the two min factions in Australian literature, the Nationalists and the Internationalists. Campbell, as a farmer, was considered by many to be in the vanguard of a new wave of parochial bush balladists. Dobson was a little more difficult to classify. She was quickly condemned as \bookish\" but due to her allusions to the European past was uneasily grouped with the Internationalist school. It took considerable time before it was realized that neither of these poets (nor many others who were being grouped under these labels) fitted into these categories. At this stage it would appear that Australian poets were well ahead of Australian critics for in both Campbell's and Dobson's work it can be seen that their interests lay well beyond geographical boundaries. Their poetry from the start moved towards a recognition and understanding of wide-ranging human values. Yet the ethos of each poet is in some sense peculiarly Australian. Despite their long standing as Australian poets Dobson's and Campbell's poetry has not received the critical attention or recognition that it deserves. 'Thus it is the intention of this thesis to provide an introductory critical evaluation to the work of these two Australian poets."
Cancellation of nonlinear Zeeman shifts with light shifts
Creators: name: Jensen, K.
name: Acosta, V. M.
name: Higbie, J. M.
name: Ledbetter, M. P.
name: Rochester, S. M.
name: Budker, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Nonlinear Zeeman (NLZ) shifts arising from magnetic-field mixing of the two hyperfine ground-states in alkali atoms lead to splitting of magnetic-resonance lines. This is a major source of sensitivity degradation and the so-called "heading errors" of alkali-vapor atomic magnetometers operating in the geophysical field range (B approx. 0.2-0.7 G). Here, it is shown theoretically and experimentally that NLZ shifts can be effectively canceled by light shifts caused by a laser field of appropriate intensity, polarization and frequency, a technique that can be readily applied in practical situations.
description: 5 pages, 5 figures, to be published in PRA
Malcolm on dreaming
Creators: name: Simpson, R. L.
Publisher: name: University of British Columbia
Year: 2011

description: Norman Malcolm's view that dreams are not experiences in sleep rests in large part on Wittgenstein's attempts to eliminate the problem of other minds. In showing that Malcolm's position is untenable, a number of views of Wittgenstein's, particularly those concerning 'private language', are shown to be mistaken. The view that dreams are not experiences of which dream memories are the later recollections is first defended against some obvious objections. It is argued that a sufficiently rich dream life would be a second life in a second real world. What this shows is that Wittgenstein's attempt to eliminate reliance on the 'inner' by an appeal to public 'criteria' presupposes knowledge of an external world, which in turn must be based on the 'inner'. Wittgenstein's views on privacy are examined and it is argued that they are without foundation. Malcolm's conclusion that the privacy of dreams makes it impossible within a dream to distinguish between using a word consistently and seeming to use it consistently is accordingly rejected. Malcolm's views on 'criteria' and the identity of concepts are attacked. It is argued that there is no principled way of individuating concepts. The claim that the meaning of 'dream' is determined by that to which one has access when awake, i.e., dream memories, is rejected. It is shown that the incompatibility between being sound asleep and manifesting experiences is no more reason to suppose that a sleeper cannot have experiences than it is to suppose that a stoic cannot. Finally, it is argued that rejection of Malcolm's position need not lead to radical skepticism as to whether one is dreaming or not.
Water Vapor in the Inner 25 AU of a Young Disk around a Low-Mass Protostar
Creators: name: Jorgensen, Jes K.
name: van Dishoeck, Ewine F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Water is one of the key molecules in the physical and chemical evolution of star- and planet-forming regions. We here report the first spatially resolved observation of thermal emission of (an isotopologue of) water with the Plateau de Bure Interferometer toward the deeply embedded Class 0 protostar NGC 1333-IRAS4B. The observations of the H2-18-O 3_13-2_20 transition at 203.4 GHz resolve the emission of water toward this source with an extent of about 0.2" corresponding to the inner 25 AU (radius). The H2-18-O emission reveals a tentative velocity gradient perpendicular to the extent of the protostellar outflow/jet probed by observations of CO rotational transitions and water masers. The line is narrow, about 1 km/s (FWHM), significantly less than what would be expected for emission from an infalling envelope or accretion shock, but consistent with emission from a disk seen at a low inclination angle. The water column density inferred from these data suggests that the water emitting gas is a thin warm layer containing about 25 M_Earth of material, 0.03% of the total disk mass traced by continuum observations.
description: accepted for publication in ApJ Letters; 12 pages, 3 figures
An evaluation of the Landcare for Teachers Program in the context of environmental education
Creators: name: Chen, Henry Cheng-li
Publisher: name: University Of Tasmania
Year: 2023

description: Landcare education is part of environmental education and unique to Australia. This paper examines Landcare as an approach to Australian environmental education experience and looks at the practice of environmental education in Australia from the perspective of a Chinese student from Taiwan. This study should therefore benefit both Australia and the Republic of China (Taiwan). The study focuses on the Landcare for Teachers Program which is a promising teacher training course which will help educators to start or enhance their teaching in Landcare. The skills acquired by participants are also applicable to other subject areas and non-teaching activities. Evaluation is necessary before the program can successfully be extended from Tasmania to other Australian States and Territories, and be considered for use in other countries. An evaluation of the Landcare for Teachers Program was made using a questionnaire survey along with interviews of some of the participants and key persons including seminar leaders. Findings are based upon the questionnaire, interviews, and related documentary and statistical analysis. The results of the evaluation have allowed recommendations to be made for the Landcare for Teachers program and the potential for developing a similar program in the Republic of China to be assessed. The major findings are that the Landcare for Teachers Program has a very positive response from participants, more than 90% satisfaction rate, which is an indication of its success; however, the course content lacks a clear philosophical direction, such as might be derived from the environmental ethic of, for example, the Australian Aboriginal culture. In addition, some course topics need more careful design to cater for the differing needs of primary and secondary school teachers, taking account of their different training backgrounds and teaching subject areas.
Jemez Mountains Pilot Fuels Inventory R analysis Code
Creators: name: Swetnam, Tyson
Publisher: name: Zenodo
Year: 2021
Subjects: R
RStudio
lidR
lidar
SfM-MVS

description: r scripting for lidR (re)processing USGS and USFS lidar, and sUAS Structure from Motoin (SfM) datasets over the Jemez Mountain study sites for their forest canopy and tree segmentation metrics. Project website: https://promethean-gift.github.io/
description: this is the initial pre release, code will be revised over time
MBM 12: young protoplanetary discs at high galactic latitude
Creators: name: Meeus, G.
name: Juhasz, A.
name: Henning, Th.
name: Bouwman, J.
name: Chen, C.
name: Lawson, W.
name: Apai, D.
name: Pascucci, I.
name: Sicilia-Aguilar, A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: (abridged) We present Spitzer infrared observations to constrain disc and dust evolution in young T Tauri stars in MBM 12, a star-forming cloud at high latitude with an age of 2 Myr and a distance of 275 pc. The region contains 12 T Tauri systems, with primary spectral types between K3 and M6; 5 are weak-line and the rest classical T Tauri stars. We first use MIPS and literature photometry to compile spectral energy distributions for each of the 12 members in MBM 12, and derive their IR excesses. The IRS spectra are analysed with the newly developed two-layer temperature distribution (TLTD) spectral decomposition method. For the 7 T Tauri stars with a detected IR excess, we analyse their solid-state features to derive dust properties such as mass-averaged grain size, composition and crystallinity. We find a spatial gradient in the forsterite to enstatite range, with more enstatite present in the warmer regions. The fact that we see a radial dependence of the dust properties indicates that radial mixing is not very efficient in the discs of these young T Tauri stars. The SED analysis shows that the discs in MBM 12, in general, undergo rapid inner disc clearing, while the binary sources have faster discevolution. The dust grains seem to evolve independently from the stellar properties, but are mildly related to disc properties such as flaring and accretion rates.
description: 14 pages, accepted by Astronomy and Astrophysics
The Compressed Baryonic Matter Experiment at FAIR: Progress with feasibility studies and detector developments
Creators: name: Heuser, Johann M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The Compressed Baryonic Matter (CBM) experiment is being planned at the international research center FAIR, under realization next to the GSI laboratory in Darmstadt, Germany. Its physics programme addresses the QCD phase diagram in the region of highest net baryon densities. Of particular interest are the expected first order phase transition from partonic to hadronic matter, ending in a critical point, and modifications of hadron properties in the dense medium as a signal of chiral symmetry restoration. Laid out as a fixed-target experiment at the heavy-ion synchrotrons SIS-100/300, the detector will record both proton-nucleus and nucleus-nucleus collisions at beam energies between 10 and 45$A$ GeV. Hadronic, leptonic and photonic observables have to be measured with large acceptance. The interaction rates will reach 10 MHz to measure extremely rare probes like charm near threshold. Two versions of the experiment are being studied, optimized for either electron-hadron or muon identification, combined with silicon detector based charged-particle tracking and micro-vertex detection. The CBM physics requires the development of novel detector sytems, trigger and data acquisition concepts as well as innovative real-time reconstruction techniques. Progress with feasibility studies of the CBM experiment and the development of its detector systems are reported.
description: 4 pages, 3 figures - FINAL - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee
Why do some care home residents die in hospital? Exploring factors, processes and experiences
Creators: name: Alcorn, Gemma
Publisher: name: The University of Edinburgh
Year: 2019

description: BACKGROUND: Care home (CH) residents are increasingly frail, multi-morbid and at risk of dying. Transferring CH residents to hospital can be associated with distress and unwanted interventions. The focus of recent UK policy has been on avoiding ‘inappropriate’ admissions to hospital and on enabling people to die in their preferred place of care. Anticipatory care planning (ACP) has been seen as a key facilitator of this however its implementation and communication pose challenges in CHs. Most residents and their relatives wish to avoid hospitalisation if possible. Nevertheless, a proportion of CH residents do die in hospital. Little is known about what symptoms or conditions this group are admitted with, what happens to them in hospital and what influences this decision to admit. AIMS AND OBJECTIVES: We aimed to explore the factors that influence hospital admission of CH residents who then die in hospital. The objectives were to describe the characteristics of this group of CH residents, the extent of documented ACP and to explore the experiences of CH staff and relatives. METHODS: A mixed methods study design was undertaken. This included an in-depth review of hospital case notes of CH residents who were admitted and died in two teaching hospitals in Scotland and qualitative interviews with a purposive sample of CH staff and relatives who cared for them. Descriptive statistics were used to analyse the quantitative data and a thematic analysis approach was adopted to analyse the interview data. RESULTS During the six month study period there were 109 deaths of CH residents in hospital admitted from 61 different CHs. Most admissions were out-of-hours (69%) and the majority of factors prompting admission were acute changes. Length of stay in hospital before death was short, with 42% of deaths occurring within three days. There was evidence of documented ACP regarding hospital admission in 44%. Twenty six CH staff from 14 CHs, and two relatives were interviewed. Themes emerging from the interviews included: staff wanting to provide end-of-life care in the CH; uncertain living and dying; family – role, expectations and relationships; ACP and a fifth overarching theme of the need for support for staff in CHs. CONCLUSION: Managing acute changes on the background of uncertain decline trajectories is challenging in CHs. Enhanced support is required to improve and embed ACP in CHs and to provide rapid, 24 hours-a-day support to manage difficult symptoms and acute changes.
Zum Metaphernverstehen von Deutsch-als-Zweitsprache-Schülerinnen und -Schülern in der Sekundarstufe I
Creators: name: Sotkov, Mihail
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: Deutsch als Zweitsprache
subject: Metaphern
subject: Verstehen
subject: Pragmatik
subject: Diskursanalyse
subject: Didaktik
subject: 400
subject: 430
subject: Metapher
subject: Verstehen
subject: Mehrsprachigkeit

description: Die Studie untersucht, wie Schülerinnen und Schüler (SuS) der Sekundarstufe I (Sek I) Metaphern verstehen. Die Metaphern wurden aus Texten zum Themenkomplex Flucht und Migration in Schulbüchern der gesellschaftswissenschaftlichen Fächer der Sek I gewonnen. Sie werden in zwei Gruppen eingeteilt: (i) lexikalisierte bzw. konventionalisierte sowie (ii) neue bzw. kreative Metaphern. 27 SuS werden im Diskurs (Forschungsinterview) zu ihrem Ausdrucksverstehen der jeweiligen Metapher, die in einem Textzusammenhang als Stimulus präsentiert wird, befragt. Neun SuS wurden monolingual deutschsprachig sozialisiert, neun SuS sprechen Deutsch als Zweitsprache und weitere neun SuS sind neu zugewandert und sollen in das deutsche Bildungssystem integriert werden. Die SuS sind in drei Altersgruppen eingeteilt: (i) Altersgruppe A (10-12 Jahre alte SuS), (ii) Altersgruppe B (13-15 Jahre alte SuS) und (iii) Altersgruppe C (16-17 Jahre alte SuS). Die Sprachstandsdiagnose zeigt, dass die neu zugewanderten SuS insgesamt die schwächste Gruppe bilden, während zwischen den Deutsch-als-Zweitsprache- und den Deutsch-als-Muttersprache-SuS nur geringe Unterschiede festzustellen sind. Die Ergebnisse der (Einzel-)Befragungen zum Metaphernverstehen fallen jedoch anders aus: Die SuS mit Erstsprache Deutsch schneiden wesentlich besser ab als ihre mehrsprachigen Peers, was v.a. auf den Umfang und die Tiefe ihres Wortschatzes zurückzuführen ist. Allerdings verstehen auch sie bei weitem nicht alles. Als konsequente Handlungstheorie der Sprache bildet die Funktionale Pragmatik mit ihren Analysekategorien das theoretische Fundament der Studie. Die im Befragungsdiskurs erhobenen Daten werden diskursanalytisch untersucht; die Methode wird handlungstheoretisch reflektiert. Zum Abschluss der Studie werden die wesentlichen Erkenntnisse dargestellt, didaktische Implikationen und Empfehlungen diskutiert sowie Desiderate formuliert.
A Numerical Testbed for Hypotheses of Extraterrestrial Life and Intelligence
Creators: name: Forgan, Duncan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The search for extraterrestrial intelligence (SETI) has been heavily influenced by solutions to the Drake Equation, which returns an integer value for the number of communicating civilisations resident in the Milky Way, and by the Fermi Paradox, glibly stated as: "If they are there, where are they?". Both rely on using average values of key parameters, such as the mean signal lifetime of a communicating civilisation. A more accurate answer must take into account the distribution of stellar, planetary and biological attributes in the galaxy, as well as the stochastic nature of evolution itself. This paper outlines a method of Monte Carlo realisation which does this, and hence allows an estimation of the distribution of key parameters in SETI, as well as allowing a quantification of their errors (and the level of ignorance therein). Furthermore, it provides a means for competing theories of life and intelligence to be compared quantitatively.
description: 22 pages, 24 figures, accepted by the International Journal of Astrobiology
Teachers' understanding of the arithmetic mean
Creators: name: Callingham, Rosemary
Publisher: name: University Of Tasmania
Year: 2023

description: A review of the current literature about statistical and probabilistic ideas was undertaken. The concept of the arithmetic mean was chosen as the focus of an experimental study. A questionnaire was administered which required increasingly sophisticated understanding of this concept in the concrete-symbolic mode, and also allowed for ikonic mode processing. Responses gained from 136 pre- and in-service teachers were analysed from three perspectives. Qualitative analysis allowed some comparison of the responses from this sample to similar studies by other researchers. Differences between sub-groups of respondants were analysed quantitatively for significance. Consideration of these results from the viewpoint of cognitive development provided some possible explanations. Developmental cycles in both ikonic and concretesymbolic mode were identified and described. A theoretical model is proposed to explain the interaction between these cycles. From this recommendations are made for teacher development, and further research.
Efficient FEM simulation techniques for thixoviscoplastic flow problems
Creators: name: Begum, Naheed
Publisher: name: TU Dortmund
Year: 2023
Subjects: subject: Thixoviscoplatic
subject: Newton-multigrid
subject: Local pressure Schur complement
subject: 510
subject: Thixotropie
subject: Viskoplastizität
subject: Fließverhalten
subject: Finite-Elemente-Methode
subject: Newton-Verfahren
subject: Mehrgitterverfahren

description: This thesis is concerned with the numerical simulations of thixoviscoplastic (TVP) flow problems. As a nonlinear multifield two-way coupled problem, the analysis of thixoviscoplasticity in complex fluid processes would present a great challenge. Numerical simulations are conceived as economic and credible tools to replicate thixoviscoplastic phenomena in different flow circumstances. This thesis proceeds to provide efficient numerical methods and corresponding algorithmic tools to fulfil this goal. To start with, we generalized the standard FEM settings of Stokes equations, and proceeded with the well-posedness study of the problem to set the foundation for the approximate problem, and for the efficient solver. In the context of solver, we advantageously use the delicate symbiosis aspects of the problem settings for FEM approximations, and the algorithmic tools to develop a monolithic Newton-multigrid TVP solver. Most importantly, we used the numerical simulations of thixoviscoplastic flow problems to understand the complex phenomena of interplay between plasticity and thixotropy. We incorporated thixotropy in well-established academical benchmarks, namely channel flow and lid-driven cavity flow. In addition, we analyzed type of transitions, namely shear localization and shear banding in Couette devices. In the end, we used thixotropy in contraction configuration to highlight the importance of taking in consideration thixotropy of material rheology for an accurate flow simulations.
title: Lernst du noch oder forschst du schon? Ergebnisse aus drei studentischen Lehrforschungsprojekten im Bachelorstudiengang Soziale Arbeit
Creators: name: van den Brink, Henning
name: Vöttiner, Andreas
Publisher: name: Ostfalia Hochschule für Angewandte Wissenschaften Braunschweig/ Wolfenbüttel
Year: 2022
Subjects: subject: 300 Sozialwissenschaften, Soziologie, Anthropologie

description: In diesem Band präsentieren drei Studierendengruppen die Ergebnisse aus Lehrforschungsprojekten im Modul „Einführung in das Projektmanagement in der Sozialen Arbeit“ im Bachelor-Studiengang Soziale Arbeit am Campus Suderburg der Ostfalia Hochschule für angewandte Wissenschaften. Dabei verwenden sie Daten onlinegestützter Personenbefragungen aus dem Jahr 2020. Die Befragungen wurden von den Studierenden selbst konzipiert, durchgeführt und im Rahmen deskriptiver Statistik ausgewertet. Während die erste Gruppe Einrichtungen der Sozialen Arbeit danach befragt hat, im Rahmen welcher Bewerbungsverfahren und anhand welcher Auswahlkriterien sie neue Mitarbeiter*innen einstellen, ist die zweite Gruppe der Frage nachgegangen, welche Wirkungen die Teilnahme an Aktivitäten in bündischen Jugendgruppen (z.B. Pfadfindergruppen) auf die Persönlichkeitsentwicklung hat. Die dritte Gruppe schließlich hat unter Jugendlichen und jungen Erwachsenen eine Umfrage zur Internetnutzung (insbesondere Soziale Medien) sowie zu eigenen Beobachtungen von und Erfahrungen mit Cybermobbing gemacht.
description: EXPLORATIONEN; 8
Laser-induced transitions between triply excited hollow states
Creators: name: Madsen, L. B.
name: Schlagheck, Peter
name: Lambropoulos, P.
Publisher: name: Universität Regensburg
Year: 2000
Subjects: subject: 530 Physik

description: Using complex scaling and a correlated basis constructed in terms of B splines, we calculate the Li+ photoion yield in the presence of a laser-induced coupling between the triply excited 2s22p(2Po) and 2s2p2(2De) resonances in lithium, the first of which is assumed to be excited by synchrotron radiation from the ground state. The laser coupling between the triply excited states is shown to lead to a significant and readily measurable modification of the line profile which provides a unique probe of the dipole strength between highly correlated triply excited states. We also present results for some higher-lying triply excited states of 2Po symmetry.
Report about the printed materials and devices-1
Creators: name: López, Laura
Publisher: name: Zenodo
Year: 2021

description: Deliverable 2.1 exposes advances related to WP2 – T2.1.1. Development of novel inks printing conditions and T2.2. Printed Circuits and SMD assembly. Task T2.1.1 aims to set the printing conditions of selected inks developed in WP1 applied to primary active components for the final demonstrators: organic photodetectors and antennas. The partners participating in this task are EUT, GNK, UPA, COC, AWCP. T2.2 aims to develop the printed circuit hybridization on two cases: 1) placing SMD components and interconnects over antennas printed on nanocellulose foils and 2) assembling photosensor reader printed on PI foil over a polymeric substate that confers mechanical robustness towards the posterior thermoforming and overmoulding processing. The participating partners for each case are EUT and UWL for case 1 and TNO for case 2. The document entails the work carried out from month 5 (T2.1.1) and month 8 (T2.2) to month 12.
AM: Eating toast - planning the day.
Creators: name: Nicolesmith
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
It s viva day
Creators: name: Jamesdoeser
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Additional file 7: of Comparative analysis of interactions between aryl hydrocarbon receptor ligand binding domain with its ligands: a computational study
Creators: name: Naidu Chitrala, Kumaraswamy
name: Yang, Xiaoming
name: Nagarkatti, Prakash
name: Nagarkatti, Mitzi
Publisher: name: figshare
Year: 2018
Subjects: Biophysics
Biochemistry
Space Science
Cell Biology
Molecular Biology
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: Calculated binding energies using MD-MM/PBSA or direct MM/PBSA for the six AhR-ligand complexes. (DOCX 13 kb)
Associated production of the Higgs boson and a single top quark in the littlest Higgs model at Large Hadron Collier
Creators: name: Yang, Shuo
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the context of the littlest Higgs model, we study the associated production of the Higgs boson and a top quark ($th$ production) at the CERN Large Hadron Collider (LHC). The cross sections for s-channel, t-channel processes and the relative correction for the total cross section are presented. In a part of parameter space, the cross sections can be distinctly deviated from the predictions of Standard Model. We also investigate the signal and backgrounds for the $th$ production at the LHC. However, due to the large QCD backgrounds, it is not very hopeful to directly observe the $th$ signal in most of the parameter space of LH model. It is found that with 30 fb$^{-1}$ of integrated luminosity, in a narrow range of the parameter space $c=0.8$ and $f\leq 1.62$ TeV, a statistical significance of 3$σ$ can be achieved. More than 30 fb$^{-1}$ luminosity will enhance the significance and the possibility of detecting the signal.
description: 11 pages, 6 figures, 1 table. Accepted for publication in PLB
Post-excavation - if you love alphabetising your DVD and CD collections this is the job for you.
Creators: name: Cosmeston
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Mid-infrared optical parametric amplifier using silicon nanophotonic waveguides
Creators: name: Liu, Xiaoping
name: Osgood, Richard M.
name: Vlasov, Yurii A.
name: Green, William M. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: All-optical signal processing is envisioned as an approach to dramatically decrease power consumption and speed up performance of next-generation optical telecommunications networks. Nonlinear optical effects, such as four-wave mixing (FWM) and parametric gain, have long been explored to realize all-optical functions in glass fibers. An alternative approach is to employ nanoscale engineering of silicon waveguides to enhance the optical nonlinearities by up to five orders of magnitude, enabling integrated chip-scale all-optical signal processing. Previously, strong two-photon absorption (TPA) of the telecom-band pump has been a fundamental and unavoidable obstacle, limiting parametric gain to values on the order of a few dB. Here we demonstrate a silicon nanophotonic optical parametric amplifier exhibiting gain as large as 25.4 dB, by operating the pump in the mid-IR near one-half the band-gap energy (E~0.55eV, lambda~2200nm), at which parasitic TPA-related absorption vanishes. This gain is high enough to compensate all insertion losses, resulting in 13 dB net off-chip amplification. Furthermore, dispersion engineering dramatically increases the gain bandwidth to more than 220 nm, all realized using an ultra-compact 4 mm silicon chip. Beyond its significant relevance to all-optical signal processing, the broadband parametric gain also facilitates the simultaneous generation of multiple on-chip mid-IR sources through cascaded FWM, covering a 500 nm spectral range. Together, these results provide a foundation for the construction of silicon-based room-temperature mid-IR light sources including tunable chip-scale parametric oscillators, optical frequency combs, and supercontinuum generators.
MAKTABGACHA TAʼLIM TASHKILOTLARI PEDAGOGLARINING INNOVATSION FAOLIYATGA MOSLASHUVIDA RAQAMLI TEXNOLOGIYALARNING AHAMIYATI
Creators: name: Mavlonov, N.Sh.
Publisher: name: Zenodo
Year: 2023

description: Zamonaviy dunyoda maktabgacha taʼlim jarayonini takomillashtirish va oʻqituvchilarning kasbiy kompetensiyasini rivojlantirishga alohida eʼtibor qaratilmoqda. 2015-yilda YUNESKO xalqaro Kongressida “Maktabgacha taʼlim bolaning umumiy rivojlanishidagi muhim bosqich hisoblanib, kundalik hayotga, dunyoga moslashish uchun asos yaratadi” degan fikr bildirildi.
Laser-Induced Transitions between Triply Excited Hollow States
Creators: name: Madsen, L. B.
name: Schlagheck, Peter
name: Lambropoulos, P.
Publisher: name: Universität Regensburg
Year: 2000
Subjects: subject: 530 Physik

description: We present an ab initio calculation of the Li+ photoion yield in the presence of laser coupling between the triply excited 2s22p2Po and 2s2p2 2De resonances in lithium, the first of which is assumed excited by synchrotron radiation from the ground state. The laser coupling between the triply excited states is shown to lead to a significant and readily measurable modification of the line profile which provides a unique probe of the dipole strength between highly correlated triply excited states.
A geometric model of skyline thinning damage
Creators: name: Ormerod, David William
Publisher: name: University of British Columbia
Year: 2011

description: In thinning, physical damage to the residual trees may result from abrasion during felling and yarding. The amount of damage is primarily a function of the stand geometry, the thinning prescription, and the felling strategy, under a given extraction system. In terms of controlling the level of damage, there are two interdependent aspects to the problem. One is to prescribe a desirable thinning that is compatible with the extraction system. The other is to efficiently engineer the extraction under the given silvicultural constraints. For skyline thinning it is assumed that a geometric model of the stand, and of the extraction system, provides a framework for examining potential physical damage, in terms of this interdependence. Based on a three-dimensional model, skyline thinning is simulated, and indices of potential damage are enumerated. For a sample stand of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), the potential damage is studied as a function of the prescription, and the system parameter that determines the felling directions. Three different selection prescriptions are examined; a Low, a Crown, and a Graded. The synthetic data is discussed in terms of frequency distributions, and as a function of the parameter mentioned. It is demonstrated that the system is very sensitive to this parameter. While the effect of the different prescribed thinnings might be thought to be intuitively obvious, some enigmatic phenomena are apparent. It is proposed that such a study is a means of examining both the silvicultural and engineering aspects of the problem of physical damage in the residual stand, for a skyline thinning system. It is hoped that such deliberation will provide a rational framework to determine the effect of this damage upon thinning regimes.
DART and the British Science Festival
Creators: name: Beck, Ant
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Kerr/CFT Correspondence in the Low Energy Limit of Heterotic String Theory
Creators: name: Ghezelbash, A. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the recently proposed Kerr/CFT correspondence in the context of heterotic string theory. The Kerr/CFT correspondence states that the near-horizon states of an extremal four (or higher) dimensional black hole could be identified with a certain chiral conformal field theory under the conjecture that the central charges from the non-gravitational fields vanish. The corresponding Virasoro algebra is generated by a class of diffeomorphisms which preserves the appropriate boundary conditions on the near-horizon geometry. To understand the chiral conformal field theory, we consider the class of extremal Kerr-Sen black hole (that contains three non-gravitational fields) as a class of solutions in the low energy limit (effective field theory) of heterotic string theory. We derive the expression of the conserved charges for the extremal Kerr-Sen solutions that contain dilaton, abelian gauge filed and antisymmetric tensor filed. We confirm and extend the validity of the conjecture (that the central charges from the non-gravitational fields vanish) for theories including antisymmetric tensor fields. We combine the calculated central charges with the expected form of the temperature using the Cardy formula to obtain the entropy of the extremal black hole microscopically; in agreement with the macroscopic Bekenstein-Hawking entropy of the extremal black hole.
description: 14 pages, a few sentences added to the introduction, version to appear in JHEP
Rigid and generic structures
Creators: name: Cooper, Garn
Publisher: name: University Of Tasmania
Year: 2023

description: This thesis is an examination of infinitesimal rigidity in generic structures using linear algebra and matroid theory techniques. The structures examined are bar and joint structures in 1, 2 and 3 dimensions, and hinged panel structures. The focus of this work is a conjectured environment for higher dimensional analogues of Laman's theorem, and some light is consequently shed on the quest for a combinatorial characterisation of (generic) rigid bar and joint structures in three dimensions.
Weibull, κ-Weibull and 3-parameter extended Weibull distributions
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2022
Subjects: κ-Weibull distribution
Weibull distribution
3-parameter extended Weibull distribution
Marshall–Olkin extended distributions

description: Here we consider a function of κ-statistics, the κ-Weibull distribution. It is compared to the Weibull distribution. We also consider the 3-parameter extended Weibull according to Marshall–Olkin extended distributions.
Double relics in Abell 2345 and Abell 1240: spectral index and polarization analysis
Creators: name: Bonafede, A.
name: Giovannini, G.
name: Feretti, L.
name: Govoni, F.
name: Murgia, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The aim of the present work is to study the radio properties of double relics in Abell 1240 and Abell 2345 in the framework of double relic formation models. We present new Very Large Array observations at 20 and 90 cm for these two clusters. We performed spectral index and polarization analysis and compared our results with expectations from theoretical models. The presence of double relics in these two cluster is confirmed by these new observations. Double relics in Abell 1240 show radio morphology, spectral index and polarization values in agreement with "outgoing merger shocks" models. One of the relics of Abell 2345 shows a peculiar morphology and spectral index profile, that are difficult to reconcile with present scenarios. We suggest a possible origin for this peculiar relic.
description: 15 pages, 10 figures, accepted for publication in Astronomy & Astrophysics
Condition Monitoring of Power Semiconductors by Means of the Controller Output Voltage Harmonics
Creators: name: Yüce, Firat
name: Hiller, Marc
Publisher: name: Institute of Electrical and Electronics Engineers (IEEE)
Year: 2021

description: In this publication, a novel approach for condition monitoring of power semiconductors is presented. The approach requires no additional sensors and only uses the data that is already available in a power electronic system. The method is based on the analysis of the output control variables of the current controller. Therefore, firstly, the effects of the sensitive parameters that provide information about aging of the power semiconductors on the controller outputs are analysed. This is done by power converter models that allow the variation of sensitive power semiconductor parameters. Based on these results, models are set up, which allow the calculation of sensitive parameters during converter operation - and thus the condition of the power semiconductors. Measurements are performed on the test bench in which the controller outputs are recorded. The chip temperatures of the power semiconductors are measured with a thermal imaging camera in order to evaluate the temperature related effects. Finally, an algorithm is proposed that is able to detect an anomaly of the power semiconductors. The algorithm can even conclude the aging mechanism by detection of a change in the sensitive parameters. Furthermore, detailed data analysis can determine which chip exactly is damaged.
title: Trade linkages and firm value: evidence from the 2018 US-China "trade war"
Creators: name: Huang, Yi
name: Lin, Chen
name: Liu, Sibo
name: Tang, Heiwai
Publisher: name: Graduate Institute of International and Development Studies
publisherIdentifier: https://ror.org/007ygn379
publisherIdentifierScheme: ROR
Year: 2018

description: Graduate Institute of International and Development Studies Working Paper ; no. 11/2018
New Bronze Age finds at the British Museum
Creators: name: Matthews, Steven
Publisher: name: Archaeology Data Service
Year: 2011

description: This resource is a single blog post created as part of the Day of Archaeology initiative. The Day of Archaeology project aimed to provide a window into the daily lives of archaeologists from all over the world. The project asked people working, studying or volunteering in the archaeological world to participate in a 'Day of Archaeology' each year by recording their day and sharing it through text, images or video on the Day of Archaeology blog.
The project asked anyone with a personal, professional or voluntary interest in archaeology to get involved, and help highlight the reasons why archaeology is vital to protect the past and inform our futures. The resulting Day of Archaeology project archive demonstrates the wide variety of work the archaeological profession undertakes day-to-day across the globe, and helps to raise public awareness of the relevance and importance of archaeology to the modern world.
The first ever Day of Archaeology was held in 2011 and, since then, the project had thousands of archaeologists take part in the event, from those working in the field through to specialists working in laboratories and behind computers. The last Day of Archaeology was on Friday 28th July 2017.
Influence of forest edge, elevation, aspect, site index, and roads on deer use of logged and mature forest, Northern Vancouver Island.
Creators: name: Willms, Walter David
Publisher: name: University of British Columbia
Year: 2011

description: This study was proposed by the B. C. Fish and Wildlife Branch to evaluate the effect of forestry practices and forest characteristics on deer use of logged and mature forests. The specific factors studied were "time since burning", "elevation", "site index", "aspect", "forest edge", "roads" and "vegetation". The effect of elevation and aspect on deer use was studied for both the mature and logged forest while the other factors were considered only for recently logged areas. The location of this study was the Nimpkish Valley, northern Vancouver Island in British Columbia. This area was selected primarily because it had a large population of Columbian black-tailed deer (Odocoileus heinionus columbianus Richardson), active logging, and variable terrain. The deer response to "time since burning", "elevation", and "site index" was generally determined by plant quality and climate. The importance of vegetative quality to deer is reduced when the climatic conditions become favorable for the animals. Therefore, during a mild winter the deer are less dependent upon the greater plant production found on areas with later seral stages, lower elevation, and higher site index, than they are during a severe winter. Similarly, on an annual basis, high plant production is less important on the warm south aspect than it is on the colder north aspect. Two types of forest edges were studied, the upper which is parallel to the elevation contours and the adjacent which is perpendicular to the elevation contours. The upper edge influences deer use of areas, both inside and outside the forest, by maximizing use near the edge. Deer use declines with increasing distance from the edge. The only apparent effect of the adjacent edge on deer use of recently logged areas was to depress use at the edge. This also occurred at the upper edge. Roads affect deer use of recently logged forests by increasing use adjacent to the road but decreasing use on the road and the road edge. It appears that deer use the road only for travel. Deer exhibit preference for a variety of plant species. The use with increasing cover of an individual species is generally parabolic while the use with increasing cover for all species combined is generally linear. Furthermore, maximum use occurs on those areas where the number of species present is greater than 1. The response of deer to increasing elevation, in the mature forest, is positive on the south aspect and zero, or nearly so, on the north aspect. This relationship is similar to that which occurred on recently logged areas following a mild winter.
Extraction of the Compton Form Factor H from DVCS measurements at Jefferson Lab
Creators: name: Moutarde, H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of Generalised Parton Distributions, we study the helicity-dependent and independent cross sections measured in Hall A and the beam spin asymmetries measured in Hall B at Jefferson Laboratory. We perform a global fit of these data and fits on each kinematical bin. We extract the real and imaginary parts of the Compton Form Factor $\mathcal{H}$ under the main hypothesis of dominance of the Generalised Parton Distribution $H$ and twist 2 accuracy. We discuss our results and compare to previous extractions as well as to the VGG model. We pay extra attention to the estimation of errors on the extraction of $\mathcal{H}$.
description: 24 pages, 8 figures