cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spin-Atomic Vibration Interaction and Spin-Flip Hamiltonian of a Single Atomic Spin in a Crystal Field
Creators: name: Kokado, Satoshi
name: Harigaya, Kikuo
name: Sakuma, Akimasa
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We derive the spin-atomic vibration interaction $V_{\rm SA}$ and the spin-flip Hamiltonian $V_{\rm SF}$ of a single atomic spin in a crystal field. We here apply the perturbation theory to a model with the spin-orbit interaction and the kinetic and potential energies of electrons. The model also takes into account the difference in vibration displacement between an effective nucleus and electrons, $Δ{\boldmath $r$}$. Examining the coefficients of $V_{\rm SA}$ and $V_{\rm SF}$, we first show that $V_{\rm SA}$ appears for $Δ{\boldmath $r$}$$\ne$0, while $V_{\rm SF}$ is present independently of $Δ{\boldmath $r$}$. As an application, we next obtain $V_{\rm SA}$ and $V_{\rm SF}$ of an Fe ion in a crystal field of tetragonal symmetry. It is found that the magnitudes of the coefficients of $V_{\rm SA}$ can be larger than those of the conventional spin-phonon interaction depending on vibration frequency. In addition, transition probabilities per unit time due to $V_{\rm SA}$ and $V_{\rm SF}$ are investigated for the Fe ion with an anisotropy energy of $-|D|S_Z^2$, where $D$ is an anisotropy constant and $S_Z$ is the $Z$ component of a spin operator.
description: 55 pages, 17 figures, to be published in J. Phys. Soc. Jpn. 79 (2010) No. 11, typos corrected
Measurement-induced disturbances and nonclassical correlations of Gaussian states
Creators: name: Mišta,, Ladislav
name: Tatham, Richard
name: Girolami, Davide
name: Korolkova, Natalia
name: Adesso, Gerardo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study quantum correlations beyond entanglement in two-mode Gaussian states of continuous variable systems, by means of the measurement-induced disturbance (MID) and its ameliorated version (AMID). In analogy with the recent studies of the Gaussian quantum discord, we define a Gaussian AMID by constraining the optimization to all bi-local Gaussian positive operator valued measurements. We solve the optimization explicitly for relevant families of states, including squeezed thermal states. Remarkably, we find that there is a finite subset of two-mode Gaussian states, comprising pure states, where non-Gaussian measurements such as photon counting are globally optimal for the AMID and realize a strictly smaller state disturbance compared to the best Gaussian measurements. However, for the majority of two--mode Gaussian states the unoptimized MID provides a loose overestimation of the actual content of quantum correlations, as evidenced by its comparison with Gaussian discord. This feature displays strong similarity with the case of two qubits. Upper and lower bounds for the Gaussian AMID at fixed Gaussian discord are identified. We further present a comparison between Gaussian AMID and Gaussian entanglement of formation, and classify families of two-mode states in terms of their Gaussian AMID, Gaussian discord, and Gaussian entanglement of formation. Our findings provide a further confirmation of the genuinely quantum nature of general Gaussian states, yet they reveal that non-Gaussian measurements can play a crucial role for the optimized extraction and potential exploitation of classical and nonclassical correlations in Gaussian states.
description: 16 pages, 5 figures; new results added; to appear in Phys. Rev. A
Novel DC-AC Converter Topology for Multilevel Battery Energy Storage Systems
Creators: name: Gommeringer, Mario
name: Kammerer, Felix
name: Kolb, Johannes
name: Braun, Michael
Publisher: name: Karlsruhe
Year: 2013

description: This paper presents a novel DC-AC converter circuit, especially for the application in multilevel battery energy storage systems (BESS), see fig. 1c. A drawback of the commonly used cascaded H-bridge is that the RMS values of the battery currents can reach multiples of the mean DC battery currents. Additional DC-DC converters in the cells can reduce the AC components of the battery currents, but cause additional semiconductor losses and require large inductors. The circuit presented in this paper reduces these AC contents with less semiconductor losses and smaller inductors than standard DC-DC converters connected to H-bridges.
Memorandum on the Status of the Carnegie-Myrdal Study, July 9, 1941
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Memorandum updating the trustees of the Carnegie Corporation on how the completion of "An American Dilemma" has progressed since April 1940.
Accidental Politicians: How Randomly Selected Legislators Can Improve Parliament Efficiency
Creators: name: Pluchino, A.
name: Garofalo, C.
name: Rapisarda, A.
name: Spagano, S.
name: Caserta, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study a prototypical model of a Parliament with two Parties or two Political Coalitions and we show how the introduction of a variable percentage of randomly selected independent legislators can increase the global efficiency of a Legislature, in terms of both the number of laws passed and the average social welfare obtained. We also analytically find an "efficiency golden rule" which allows to fix the optimal number of legislators to be selected at random after that regular elections have established the relative proportion of the two Parties or Coalitions. These results are in line with both the ancient Greek democratic system and the recent discovery that the adoption of random strategies can improve the efficiency of hierarchical organizations.
description: 19 pages, 7 figures, new improved and longer version
The ANKA-IR2 Nanoscope and Micro- and Nanospectroscopy Applications
Creators: name: Brundermann, E.
name: Schmidt, D. A.
name: Gasharova, B.
name: Mathis, Y.-L.
name: Moss, D.
name: Steinmann, J.
name: Edengeiser, E.
name: Mischo, M.
name: Havenith, M.
Publisher: name: Karlsruhe
Year: 2013

description: We report on a newly developed and integrated microscopy and nanoscopy station at the ANKA-IR2 beamline. We further elucidate how vibrational near-field and microspectroscopy can give new insights in medical applications.
title: Book review : Residential care: A positive future. Terry Philpot (Ed.) London, The Residential Forum, 2008. 182pp, ISBN978-1-900909-06-8
Creators: name: Lane, David
Publisher: name: Strathprints - University of Strathclyde
Year: 2010

description: When the National Assistance Act 1948 and the Children Act 1948 were passed into law, they created frameworks for residential care which lasted for more than three decades. As Minister of Health, Aneurin Bevan wanted to see old people be able to retire into residential care homes where they would be able to enjoy hotel standards - as against the workhouses then in use, with their reputation for harsh conditions and associations of humiliation for the residents. At the same time, local authorities were given wider powers to provide services for children.
Memorandum from Charles Dollard to Robertson D. Ward, March 17, 1941
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Instructions to Carnegie Corporation Treasurer Robertson D. Ward for reimbursing Gunnar Myrdal's travel expenses from his return from Sweden.
Swift J1644+57: A White Dwarf Tidally Disrupted by a 10^4 M_{odot} Black Hole?
Creators: name: Krolik, Julian H.
name: Piran, Tsvi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We propose that the remarkable object Swift J1644+57, in which multiple recurring hard X-ray flares were seen over a span of several days, is a system in which a white dwarf was tidally disrupted by an intermediate mass black hole. Disruption of a white dwarf rather than a main sequence star offers a number of advantages in understanding the multiple, and short, timescales seen in the light curve of this system. In particular, the short internal dynamical timescale of a white dwarf offers a more natural way of understanding the short rise times ($\sim 100$ s) observed. The relatively long intervals between flares ($\sim 5 \times 10^4$ s) may also be readily understood as the period between successive pericenter passages of the remnant white dwarf. In addition, the expected jet power is larger when a white dwarf is disrupted. If this model is correct, the black hole responsible must have mass $\lesssim 10^5 M_{\odot}$.
description: Accepted for publication in Ap. J
69728: Oriel and the Great War
Creators: name: Project Team, Oxford At War
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: In this audio podcast, Dr John Stevenson (former College Lecturer in History at Oriel and former Fellow at Worcester College) talks about Oriel College's involvement in the First World War.
A brief introduction is given by the Provost of Oriel College, Moira Wallace OBE
Letter from Charles Dollard to Gunnar Myrdal, March 25, 1941
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Charles Dollard writes to confirm a previously agreed upon salary for Gunnar Myrdal for his work on completing "An American Dilemma" over the coming year.
THE (CURRENT) STATE OF PRACTICE OF FORMATION OF COMMUNICATION CULTURE IN FUTURE FOREIGN LANGUAGE TEACHERS
Creators: name: Azimova, Makhfuza
Publisher: name: Zenodo
Year: 2023

description: This article describes the (current) practical situation of formation of communication culture among future foreign language teachers. We can also see that the problems of communication culture of future foreign language teachers have been studied by a number of pedagogic scientists from today's point of view. The formation of communication culture is important for the development of speech skills in people. As the main task of communication, it can be recognized that people form communication on the basis of the experience developed by a certain person, as a result of which the demands placed on individual experience are limited. Therefore, the culture of communication is an important factor in the development of a person, because in communication a person realizes his personal characteristics. It follows that it can be considered that the main functions of communication develop through communication.
Letter from Walter A. Jessup to Ernest M. Hopkins, May 13, 1941
Creators: name: Jessup, Walter A. (Walter Albert), 1877-1944
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Walter A. Jessup writes to Dartmouth College President Ernest M. Hopkins to inquire about the possibility of Gunnar Myrdal living and working on the Dartmouth campus over the upcoming summer term.
69730: "Go home and sit still": WWI and Women's Colleges at Oxford
Creators: name: Project Team, Oxford At War
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Article in Isis Magazine (March 2015) by Emily Frisella examining how the enrolment at many women's colleges increased over the duration of World War I, with women becoming more academically active.
Design, fabrication and characterization of a double-network alginate-pHEMA hydrogel coating for PDMS-based biomedical implants
Creators: name: Wang, Zhengmu
Publisher: name: University of British Columbia
Year: 2017

description: Traditional silicone biomedical implants, such as urinary catheters, often suffer from high surface friction, high stiffness, and a lack of hydrophilicity, which can cause discomfort or discomfort. To tackle these challenges, we developed a double-network alginate-pHEMA hydrogel “cushion” coating for polydimethylsiloxane (PDMS) biomedical implants. The double-network hydrogel presented here consists of two distinct networks made of alginate and pHEMA, respectively. The alginate network is covalently bonded to PDMS substrates as scaffolding, and the denser pHEMA network fills the free space within the alginate network. In this proof of concept study, the double-network hydrogel achieved a compressive fracture stress of 502.04±14.41 kPa, which is 5.8-fold stronger than the alginate hydrogel, while its elasticity is still comparable to soft tissues. The proposed double-network hydrogel has a negligible amount of swelling in biological fluids and exhibits no cytotoxicity, which are desirable qualities for biomedical and coating applications. Both chemical modification using APTES and micropillar anchors have been used to improve the coating stability. We found that the adhesion strength of the hydrogel coating on micropillar PDMS substrates is 55% stronger than on bare PDMS substrates when both substrates are grafted with APTES. In comparison to native PDMS and K-Y Jelly-lubricated PDMS, the double-network alginate-pHEMA hydrogel-coated PDMS demonstrated significantly less friction and superior hydrophilicity.
69731: Trinity College - New War Memorial Unveiled
Creators: name: Project Team, Oxford At War
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Article regarding a new war memorial board, commemorating the five German and Austrian members of Trinity who fell in the First World War. Also includes a video of the unveiling ceremony.
Mass-splittings of doubly heavy baryons in QCD
Creators: name: Albuquerque, R. M.
name: Narison, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We consider (for the first time) the ratios of doubly heavy baryon masses (spin 3/2 over spin 1/2 and SU(3) mass-splittings) using double ratios of sum rules (DRSR), which are more accurate than the usual simple ratios often used in the literature for getting the hadron masses. In general, our results agree and compete in precision with potential model predictions. In our approach, the alpha_s corrections induced by the anomalous dimensions of the correlators are the main sources of the Xi^*_{QQ}- Xi_{QQ} mass-splittings, which seem to indicate a 1/M_Q behaviour and can only allow the electromagnetic decay Xi^*_{QQ} to Xi_{QQ}+ gamma but not to Xi_{QQ}+ pi. Our results also show that the SU(3) mass-splittings are (almost) independent of the spin of the baryons and behave approximately like 1/M_Q, which could be understood from the QCD expressions of the corresponding two-point correlator. Our results can improved by including radiative corrections to the SU(3) breaking terms and can be tested, in the near future, at Tevatron and LHCb.
description: 8 pages, 12 figures, 2 tables, improved version including radiative corrections, some additional references and a new summary table
strutture covid-19 di tipo detentivo per minori. Richiesta informazioni. Consenso informato. Richiesta rilascio dei minori ristretti
Creators: name: Negroni, Alessandro Attilio
Publisher: name: Zenodo
Year: 2020

description: Lettera inviata (in qualità di presidente dell'Associazione radicale Diritti alla follia) al Sindaco di Milano Giuseppe Sala con richiesta di informazioni circa i minori ristretti in strutture covid-19
Can Gamma-Ray Burst Jets Break Out the First Stars?
Creators: name: Suwa, Yudai
name: Ioka, Kunihito
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We show that a relativistic gamma-ray burst (GRB) jet can potentially pierce the envelope of very massive first generation star (Population III; Pop III) by using the stellar density profile to estimate both the jet luminosity (via accretion) and its penetrability. The jet breakout is possible even if the Pop III star has a supergiant hydrogen envelope without mass loss, thanks to the long-lived powerful accretion of the envelope itself. While the Pop III GRB is estimated to be energetic, E_{gamma,iso} ~ 10^{55} erg, the supergiant envelope hides the initial bright phase into the cocoon component, leading to a GRB with a long duration ~ 1000(1+z) sec and an ordinary isotropic luminosity ~ 10^{52} erg s^{-1} (~ 10^{-9} erg cm^{-2} s^{-1} at redshift z ~ 20). The neutrino-annihilation is not effective for Pop III GRBs because of a low central temperature, while the magnetic mechanism is viable. We also derive analytic estimates of the breakout conditions, which are applicable to various progenitor models. The GRB luminosity and duration are found to be very sensitive to the core and envelope mass, providing possible probes of the first luminous objects at the end of the high redshift dark ages.
description: 7 pages, 2 figures; accepted for publication in ApJ
Seesaw at LHC through Left - Right Symmetry
Creators: name: Senjanovic, Goran
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: I argue that LHC may shed light on the nature of neutrino mass through the probe of the seesaw mechanism. The smoking gun signature is lepton number violation through the production of same sign lepton pairs, a collider analogy of the neutrinoless double beta decay. I discuss this in the context of L-R symmetric theories, which led originally to neutrino mass and the seesaw mechanism. A W_R gauge boson with a mass in a few TeV region could easily dominate neutrinoless double beta decay, and its discovery at LHC would have spectacular signatures of parity restoration and lepton number violation. Moreover, LHC can measure the masses of the right-handed neutrinos and the right-handed leptonic mixing matrix, which could in turn be used to predict the rates for neutrinoless double decay and lepton flavor violating violating processes. The LR scale at the LHC energies offers great hope of observing these low energy processes in the present and upcoming experiments.
description: 14 pages. Based on the plenary talk at the Conference in Honour of Murray Gell-Mann's 80th Birthday, NTU, Singapore, February 2010. Added discussion on mirror fermions, additional references. The version to appear in the International Journal of Modern Physics A
A Deep Chandra ACIS Study of NGC 4151. II. The Innermost Emission Line Region and Strong Evidence for Radio Jet-NLR Cloud Collision
Creators: name: Wang, Junfeng
name: Fabbiano, Giuseppina
name: Elvis, Martin
name: Risaliti, Guido
name: Mundell, Carole G.
name: Karovska, Margarita
name: Zezas, Andreas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We have studied the X-ray emission within the inner 150 pc radius of NGC 4151 by constructing high spatial resolution emission line images of OVII, OVIII, and NeIX. These maps show extended structures that are spatially correlated with the radio outflow and optical [OIII] emission. We find strong evidence for jet--gas cloud interaction, including morphological correspondences with regions of X-ray enhancement, peaks of near-infrared [FeII] emission, and optical clouds. In these regions, moreover, we find evidence of elevated NeIX/OVII ratios; the X-ray emission of these regions also exceeds that expected from nuclear photoionization. Spectral fitting reveals the presence of a collisionally ionized component. The thermal energy of the hot gas suggests that >0.1% of the estimated jet power is deposited into the host interstellar medium through interaction between the radio jet and the dense medium of the circum-nuclear region. We find possible pressure equilibrium between the collisionally ionized hot gas and the photoionized line-emitting cool clouds. We also obtain constraints on the extended iron and silicon fluorescent emission. Both lines are spatially unresolved. The upper limit on the contribution of an extended emission region to the Fe Kalpha emission is <5% of the total, in disagreement with a previous claim that 65% of the Fe Kalpha emission originates in the extended narrow line region.
description: Accepted for publication in ApJ. 28 pages, 9 figures
69732: Video: A Postcard from Hitler [Annual Review 2012]
Creators: name: Project Team, Oxford At War
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: An introduction to a project to gather and tell personal stories from the First World War. Objects and stories are able to tell us about a time passing from living memory, the story of the lives of men, women and children in wartime. Published on 10 Jan 2013
Ultracold atoms in a cavity mediated double-well system
Creators: name: Larson, Jonas
name: Martikainen, Jani-Petri
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study ground-state properties and dynamics of a dilute ultracold atomic gas in a double well potential. The Gaussian barrier separating the two wells derives from the interaction between the atoms and a quantized field of a driven Fabry-Perot cavity. Due to intrinsic atom-field nonlinearity, several novel phenomena arise being the focus of this work. For the ground state, there is a critical pumping amplitude in which the atoms self-organize and the intra cavity field amplitude drastically increases. In the dynamical analysis, we show that the Josephson oscillations depend strongly on the atomic density and may be greatly suppressed within certain regimes, reminiscent of self-trapping of Bose-Einstein condensates in double-well setups. This pseudo self-trapping effect is studied within a mean-field treatment valid for large atom numbers. For small numbers of atoms, we consider the analogous many-body problem and demonstrate a collapse-revival structure in the Josephson oscillations.
description: 12 pages, 10 figures
Corrosion behavior of API X100 steel in near-neutral pH bicarbonate environments : experimental and modelling studies
Creators: name: Gadala, Ibrahim M.
Publisher: name: University of British Columbia
Year: 2017

description: API X100 is a new high-strength low-alloy steel which has garnered great interest from the pipeline industry due to the economic benefits it offers in terms of lower material, transportation, and fabrication costs. However, buried pipeline steels suffer from external corrosion and cracking, the mechanism of which in near-neutral pH environments is not yet fully understood. This dissertation presents and discusses the results of several electrochemical studies and numerical models conducted on X100 steel, contributing to a more complete understanding of the fundamental corrosion processes occurring in these environments. Improved simulation accuracy for corrosion rates and pipeline integrity is achieved. Applications of this research are strongest within the buried oil and gas transmission pipeline field, yet are extendable to other infrastructural and engineering applications such as utility piping systems and steel reinforcements of buried or concrete structures. Results of this work elucidate the criticality of even minor pH variations within the near-neutral pH environment on the corrosion and passivation of X100. Conflicting impacts of [HCO^-₃], versus %CO₂ on corrosion rate are revealed, attributed to the gradual dominance of hydrogen evolution cathodic reactions involving HCO^-₃ species at higher pH. A finer three region subdivision of the near-neutral pH range is proposed based on the dissolution, dissolution-adsorption, adsorption-diffusion, and diffusion-controlled behaviors which appear as pH, [HCO^-₃], [Cl^-], [SO24^(2-)], and temperatures are changed. Dynamic electrochemical impedance spectroscopy identifies the role of Cl^-/ SO24^(2-) in increasing corrosion rate, decreasing pre-passive stage diffusion, and decreasing passive layer protection. Increased porosity of FeOOH tubercle structures formed in low dissolved [O₂] environments augments diffusion therein, spurring the exclusive formation of Fe₂O₃ underneath instead of only Fe₃O₄. Hydrogen diffusivity in X100 steel is found to be 4.4x10-⁷ cm²/s. During free corrosion, a diffusible hydrogen concentration of 1 atomic ppm is also measured in the alloy. Simulations in the Finite Element models developed indicate ideal anode placements and applied voltages for an underground cathodic protection system. Additionally, the transient evolution of an external corrosion defect which reaches 3 mm deep within 3 years is visualized, wherein the pipeline’s structural integrity is diminished by 8% of the intact pipeline strength.
Algorithm Engineering for fundamental Sorting and Graph Problems
Creators: name: Osipov, Vitaly
Publisher: name: Karlsruhe
Year: 2014
Subjects: Algorithm
Engineering
Sorting
Graph

description: Fundamental Algorithms build a basis knowledge for every computer science undergraduate or a professional programmer. It is a set of basic techniques one can find in any (good) coursebook on algorithms and data structures. In this thesis we try to close the gap between theoretically worst-case optimal classical algorithms and the real-world circumstances one face under the assumptions imposed by the data size, limited main memory or available parallelism.
Memorandum from Charles Dollard to Robertson D. Ward, May 13, 1941
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Note authorizing payment of Samuel A. Stouffer's salary for October 1940 through September 1941 for his work on putting together "An American Dilemma."
Investigations of background due to secondary electron emission in the KATRIN-experiment
Creators: name: Leiber, Benjamin
Publisher: name: Karlsruhe
Year: 2014
Subjects: KATRIN
Neutrino mass
Secondary electron emission
Background

description: KATRIN will determine the effective mass of the electron anti-neutrino with a sensitivity of 200 meV (90% C.L.) by scanning the tritium-beta-spectrum close to the endpoint energy with unprecedented precision. The focus of this work lies on the detailed investigation of one of two main background sources of the experiment: the emission of secondary electrons from the large inner surface of the stainless steel vessel which are caused caused by cosmic ray muons and environmental radiation.
69733: Mister Brownrigg's Boys. Magdalen College School and The Great War.
Creators: name: Project Team, Oxford At War
Publisher: name: University of Oxford
Year: 2023
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: About The Book
No less than fifty Old Boys from Magdalen College School, Oxford died during or as a result of The Great War. Set against the hundreds of thousands of their countrymen this number may seem small but it left an indelible mark not only on their 'alma mater' but on the lives of their families and friends. Indeed the names of five Houses of the School are a permanent reminder of this extraordinary sacrifice (Wilkinson-Blagden, Callender, Chavasse, Leicester and Maltby). One hundred years after the start of the War the background, school and service record, and circumstance of death of each of these young men is revealed for the first time. While every school in the country will have suffered loss, Magdalen College School is unique in that it numbers Noel Chavasse (the only double Victoria Cross winner of the War) as well as John Fox Russell VC MC among the Old Boys who fell. Others honoured in this fine book include a 1st Class cricketer, Francis Roberts, and a member of the inaugural Welsh Rugby team, Richard Garnons Williams. Amazingly one school master, Charles Edward Brownrigg, was central in the education and nurturing of the boys. Thanks to meticulous research each of the fifty accounts reveal fascinating snippets of social, school, sporting and military history, spanning the period leading up to and including the years and theatres of The Great War. Mister Brownrigg's Boys will not only be especially significant to anyone connected with the school or the Oxford area, but will also provide a moving and informative personal level account of The Great War to the general reader.
Highly multimode memory in a crystal
Creators: name: Bonarota, M.
name: Gouët, J. -L. Le
name: Chanelière, T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally demonstrate the storage of 1060 temporal modes onto a thulium-doped crystal using an atomic frequency comb (AFC). The comb covers 0.93 GHz defining the storage bandwidth. As compared to previous AFC preparation methods (pulse sequences i.e. amplitude modulation), we only use frequency modulation to produce the desired optical pumping spectrum. To ensure an accurate spectrally selective optical pumping, the frequency modulated laser is self-locked on the atomic comb. Our approach is general and should be applicable to a wide range of rare-earth doped material in the context of multimode quantum memory.
Memorandum from Charles Dollard to Walter A. Jessup, May 17, 1941
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Notes from phone conversation between Charles Dollard and Samuel A. Stouffer regarding Richard Sterner's salary and the recruitment of Stouffer's secretary Ruth Moulik to work for Gunnar Myrdal at Dartmouth over the summer.
Optimisation of the reaction parameters in a batch reactor and a CSTR for the recovery of phenol from hydrothermal biomass liquefaction
Creators: name: Forchheim, Daniel
Publisher: name: Karlsruhe
Year: 2014
Subjects: Lignin liquefaction
supercritical water
ethanol
phenol
continuous process

description: This work deals with the hydrothermal liquefaction of lignin. The focus laid on the discovery of the main reaction pathways within the depolymerisation of lignin-macromolecules and the discovery of bottleneck reactions. This was achieved by literature study and experimental work in both batch and continuous reactor. Modelling of the formal kinetics of the discovered reactions facilitated the evaluation of experimental results.
Majorana path integral for nonequilibrium dynamics of two-level systems
Creators: name: Sedrakyan, Tigran A.
name: Galitski, Victor M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a new field-theoretic approach to anaylize non-equilirbium dynamics of two-level systems (TLS), which is based on a correspondence between a driven TLS and a Majorana fermion field theory coupled to bosonic fields. This approach allows us to calculate analytically properties of non-linear TLS dynamics with an arbitrary accuracy. We apply our method to analyze specific TLS dynamics under a monochromatic periodic drive that is relevant to the problem of decoherence in Josephson junction qubits. It is demonstrated that the method gives the precise positions of the resonance peaks in the non-linear dielectric response function that are in agreement with numerical simulations.
description: 8 pages, 5 figures; References added; Accepted for publication in Phys. Rev. B
Letter from Samuel A. Stouffer to Charles Dollard, May 9, 1941
Creators: name: Stouffer, Samuel A., 1900-1960
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Discussion of salaries for Samuel A. Stouffer and his secretary Ruth Moulik and meeting with Gunnar Myrdal in Washington.
Lattice Simulations and Infrared Conformality
Creators: name: Appelquist, Thomas
name: Fleming, George T.
name: Lin, Meifeng
name: Neil, Ethan T.
name: Schaich, David A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine several recent lattice-simulation data sets, asking whether they are consistent with infrared conformality. We observe, in particular, that for an SU(3) gauge theory with 12 Dirac fermions in the fundamental representation, recent simulation data can be described assuming infrared conformality. Lattice simulations include a fermion mass m which is then extrapolated to zero, and we note that this data can be fit by a small-m expansion, allowing a controlled extrapolation. We also note that the conformal hypothesis does not work well for two theories that are known or expected to be confining and chirally broken, and that it does work well for another theory expected to be infrared conformal.
description: 6 pages, 4 figures. v2: added new fit including finite-volume corrections. v3: updated to match published version
DeepGreen - Vom Projekt zum nationalen Open-Access-Service
Creators: name: Boltze, Julia
name: Pampel, Heinz
name: Putnings, Markus
Publisher: name: Zenodo
Year: 2021
Subjects: Repositorien
Verlage
Transformation

description: Gefördert von der Deutschen Forschungsgemeinschaft (DFG) wurde von 2016 bis 2021 die Datendrehscheibe DeepGreen aufgebaut. Diese nationale Open-Access-Infrastruktur verteilt wissenschaftliche Publikationen und zugehörige Metadaten von Verlagen an Open-Access-Repositorien. Nach einer Testphase ging der Dienst im März 2021 in den Pilotbetrieb. Dank der Zusammenarbeit mit den Verlagen De Gruyter, Frontiers, Future Medicine, Karger, MDPI, Sage und Wiley konnte DeepGreen im Jahr 2020 über 25.000 Artikel an mehr als 60 Forschungseinrichtungen in Deutschland automatisiert verteilen. Damit erleichtert der Dienst lokale Open-Access-Aktivitäten an Hochschulen und außeruniversitären Einrichtungen und steigert die Zugänglichkeit und Sichtbarkeit der Publikationen.
 Der Beitrag stellt aktuelle Entwicklungen bei DeepGreen vor. Der Fokus liegt auf der Darstellung der Zusammenarbeit mit Repositorien und Verlagen bei der Förderung der Open-Access-Transformation in Deutschland. Weiter werden Strategien zur Nachhaltigkeit des Dienstes und Planungen zur Weiterentwicklung der Datendrehscheibe erläutert.
Welchen Einfluss hat die Zufriedenheit von Mitarbeitenden auf ihre Bindung zur Organisation und welchen Beitrag können Führungspersonen diesbezüglich leisten?
Creators: name: Wildberger, Claudia
Publisher: name: Zenodo
Year: 2020

description: Gibt es Unterschiede bei den verschiedenen Generationen?
 Wo sind die Grenzen der Möglichkeiten einer Führungsperson auf die Mitarbeiter/-innen Einfluss zu nehmen? Aufgrund des zunehmenden Fachkräftemangels werden Themen wie Fluktuation und Arbeitgeberattraktivität an Bedeutung in den Unternehmen zunehmen. Es gibt Zukunftsvisionen, wonach Unternehmen in Zukunft wegen fehlender Mitarbeitenden und nicht wegen fehlender Kundschaft geschlossen werden müssen. Mitarbeiter/- innen sind als wichtige Ressource der Unternehmen erkannt worden. Lösungsansätze werden in der Vereinbarkeit von Familie und Beruf, in der vermehrten Motivierung der Männer für die Gesundheitsberufe und dem flexiblen Einbezug von älteren Menschen im Arbeitsleben gesehen. Zum Thema der Motivation werde ich die inhaltstheoretischen Ansätze (Anreize) mit der Zwei-Faktoren-Theorie und den prozessorientierten Ansatz (Rubikonmodell- Motivationsprozess in vier Phasen) vorstellen. Die Bedürfnisse der Mitarbeitenden haben sich in den letzten Jahren verändert. Lohn scheint nicht mehr das wichtigste Kriterium für eine Stelle zu sein, denn zunehmend stehen die passenden Arbeitsbedingungen im Vordergrund. Die Bindung der Mitarbeitenden wird in drei verschiedene Bereiche eingeteilt. Ein in der Literatur häufig thematisiertes Bindungsverhalten ist das affektive Commitment, das „Bleiben wollen“. Dabei sind zufriedene Mitarbeitende nicht automatisch an das Unternehmen gebunden. Führungspersonen können mittels transformationaler Führung (werteorientiert und sinnstiftend) generell und in altersdurchmischten Teams unterstützend wirken. Für die zukünftigen Generationen wird ein Umdenken seitens der Unternehmen stattfinden müssen, da grundsätzlich eine höhere Wechselbereitschaft (Fluktuation) erwartet wird. Den Bezug zur Praxis stelle ich mittels sieben Interviews in zwei verschiedenen Pflegeheimen aus der Zentralschweiz her und werde nach dem Praxisvergleich, mit der Beantwortung auf die eingangs genannten Fragen mit eigenen Schlussfolgerungen abschliessen. Diese Arbeit zeigt die Komplexität und Vielfältigkeit in den Ansprüchen an eine Führungsperson auf. Das Hintergrundwissen dient als Gerüst, um die verschiedenen Bedürfnisse unterschiedlicher Mitarbeiter/-innen zu verstehen und mit diesen umzugehen. Auch wenn Führungspersonen nicht alles beeinflussen können, ist es möglich, in mehreren Bereichen unterstützend Einfluss zu nehmen.
description: + Code Diss LU: hslusa mas msg + Fussnote: Masterarbeit MAS Management im Sozial- und Gesundheitsbereich, Hochschule Luzern – Soziale Arbeit, 2020 + NL-Code: NLLUHSA202012
Simplicity in simplicial phase space
Creators: name: Dittrich, Bianca
name: Ryan, James P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A key point in the spin foam approach to quantum gravity is the implementation of simplicity constraints in the partition functions of the models. Here, we discuss the imposition of these constraints in a phase space setting corresponding to simplicial geometries. On the one hand, this could serve as a starting point for a derivation of spin foam models by canonical quantisation. On the other, it elucidates the interpretation of the boundary Hilbert space that arises in spin foam models. More precisely, we discuss different versions of the simplicity constraints, namely gauge-variant and gauge-invariant versions. In the gauge-variant version, the primary and secondary simplicity constraints take a similar form to the reality conditions known already in the context of (complex) Ashtekar variables. Subsequently, we describe the effect of these primary and secondary simplicity constraints on gauge-invariant variables. This allows us to illustrate their equivalence to the so-called diagonal, cross and edge simplicity constraints, which are the gauge-invariant versions of the simplicity constraints. In particular, we clarify how the so-called gluing conditions arise from the secondary simplicity constraints. Finally, we discuss the significance of degenerate configurations, and the ramifications of our work in a broader setting.
description: Typos and references corrected
Hydrodynamic equation of a spinor dipolar Bose-Einstein condensate
Creators: name: Kudo, Kazue
name: Kawaguchi, Yuki
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We introduce equations of motion for spin dynamics in a ferromagnetic Bose-Einstein condensate with magnetic dipole-dipole interaction, written using a vector expressing the superfluid velocity and a complex scalar describing the magnetization. This simple hydrodynamical description extracts the dynamics of spin wave and affords a straightforward approach by which to investigate the spin dynamics of the condensate. To demonstrate the advantages of the description, we illustrate dynamical instability and magnetic fluctuation preference, which are expressed in analytical forms.
description: 13 pages, 5 figures
Revistas depredadoras: claves para detectarlas
Creators: name: Manco, Alejandra
Publisher: name: Zenodo
Year: 2023
Subjects: Revistas predatorias
Predatory journals

description: Presentacion sobre revistas depredadoras en el seminario de We Editors.
description: {"references": ["Bishop, D. V. M. (2023, February 6). Red flags for paper mills need to go beyond the level of individual articles: a case study of Hindawi special issues. https://doi.org/10.31234/osf.io/6mbgv", "Else, H. (2023, January 18). Multimillion-dollar trade in paper authorships alarms publishers. Nature News. Retrieved February 27, 2023, from https://www.nature.com/articles/d41586-023-00062-9", "InterAcademy Partnership (IAP) (2021) Combatting Predatory Academic Journals and Conferences. https://www.interacademies.org/project/predatorypublishing", "Grudniewicz, A. et al. (2019) Nature 576, 210-212 doi: https://doi.org/10.1038/d41586-019-03759-y", "Manco, A. (2021) El Directorio de Revistas de Acceso Abierto (DOAJ) en el ecosistema de acceso abierto y un par de observaciones sobre el panorama actual de revistas cient\u00edficas en Am\u00e9rica Latina: transferencia editorial y revistas depredadoras. I Simposio Virtual Internacional de Profesionales del Libro Acad\u00e9mico \u2013 UNAL, Universidad Nacional de Colombia (UNAL), Bogot\u00e1, Colombia. https://hal.science/hal-03238581", "Mills, D., & Inouye, K. (2021). Problematizing 'predatory publishing': A systematic review of factors shaping publishing motives, decisions, and experiences. Learned Publishing, 34(2), 89\u2013104. https://doi.org/10.1002/leap.1325", "Siler, K., Vincent-Lamarre, P., Sugimoto, C. R., & Larivi\u00e8re, V. (2021, October 26). Predatory publishers' latest scam: Bootlegged and rebranded papers. Nature News. Retrieved February 27, 2023, from https://www.nature.com/articles/d41586-021-02906-8#annotations:7sR2uG-qEe2QHScXsIp4Ow", "Shen, C. & Bj\u00f6rk, BC. (2015) 'Predatory' open access: a longitudinal study of article volumes and market characteristics. BMC Med 13, 230. doi:https://doi.org/10.1186/s12916-015-0469-2", "Shen, C. & Shah, L. (2023) Unethical Publishing practices - What researchers should know before submitting their manuscript. \u00c9tica e Pesquisa em Educa\u00e7\u00e3o: subs\u00eddios - v. 3 - 2023 [Forthcoming]", "Varun. (2021, July 20). Hijacked journals: What they are and how to avoid them. Clarivate. Retrieved February 27, 2023, from https://clarivate.com/blog/hijacked-journals-what-they-are-and-how-to-avoid-them/"]}
Computer Games and Canadaʼs Digital Economy: The Role of Universities in Promoting Innovation
Creators: Gouglas, Sean
Della Rocca, Jason
Jenson, Jennifer
Kee, Kevin
Rockwell, Geoffrey
Schaeffer, Jonathan
Simon, Bart
Publisher: name: University of Alberta Library
Year: 2010

This report describes the state of the computer gaming industry in Canada, the game design cycle, and a detailed discussion of the game development process with a specific focus on the Montreal game industry.

This report also examines university courses and curricula in game design and game study, including those that involve public/private partnerships in teaching and research on gaming.
Letter from Charles Dollard to Albert I. Dickerson, May 21, 1941
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Charles Dollard writes to convey Gunnar Myrdal's gratitude at being permitted to live and work at Dartmouth College over the summer.
Alternator Identification Using Tailored Multifrequency Signals
Creators: name: Khoshlahjeh – Motamed, Mahmood
Publisher: name: London South Bank University
Year: 1992

description: This work features alternator response estimation based on spectral analysis techniques using a multifrequency periodic perturbation signal during normal operation. Block diagrams derived from 2-axis theory show the effective closed-loop configuration, which may lead to bias in the spectral estimates. Use of an external periodic perturbation signal and a coherent analysis affords reduced bias and can be used to reduce the effects of incoherent noise on estimates and give a degree of control over the signal to noise ratio. It is shown that of various periodic perturbation signals, based on some performance indicators, multifrequency signals are most suited for frequency domain identification. _ The choice of multifrequency signals is based on comparison of such signals for maintaining low relative peak factors at various parts of the plant. The comparisons were performed by simulation and also on a scaled down model of the alternator and voltage regulator combination. The ability to tailor the spectral envelope of multifrequency signals is explored and a simple solution is provided which overcomes the usual signal deterioration after passage through the intermediary system (automatic voltage regulator) and results in much improved estimates. Identification trials were conducted on a 7.5 kVA microalternator system. Interfacing of the measurement system to a personal computer was carried out. Real-time software was developed which provided automation of data acquisition, storing and processing of measurements. Frequency domain computational results are provided for both unloaded and loaded configurations. For the loaded configuration the relationship between the responses at different operating points is explored.
Memorandum from Charles Dollard to Frederick P. Keppel and Eliza Gaylord, March 12, 1941
Creators: name: Dollard, Charles, 1907-1977
Publisher: name: Columbia University
Year: 2019
Subjects: Race relations
African Americans--Social conditions
Endowments

description: Notes from lunch meeting between Charles Dollard, Gunnar Myrdal and Donald Young, including a timeline for the completion of "An American Dilemma" and Myrdal's anticipated living expenses over the next year.