cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
U redox state and speciation of U in contact with magnetite nanoparticles : High resolution XANES, EXAFS, XPS and TEM study
Creators: name: Pidchenko, I.
name: Schild, D.
name: Yokosawa, T.
name: Kvashnina, K.
name: Bohnert, E.
name: Heberling, F.
name: Finck, N.
name: Schäfer, T.
name: Rothe, J.
name: Geckeis, H.
name: Vitova, T.
Publisher: name: Karlsruhe
Year: 2015

description: In this work, redox states and speciation of U in U coprecipitated with and sorbed on magnetite nanoparticles are investigated by U M₄ HR-XANES, L₃ EXAFS, XPS and TEM techniques. Coexistence of U(V), U(IV) and U(VI) in varying ratios is clearly detect by the U M₄ HR-XANES technique. Mainly U(V) stable for more than 240 days of contact time is found In a coprecipitated sample with lowest U loading (1000 ppm U). Coprecipitated sample with highest U loading (10000 ppm) undergoes reduction to U(IV) within less than 7 days. Reduction kinetics of U and long term stability of U(V) is discussed for both batch sorption and coprecipitation systems.
Further developments for the auxiliary field method
Creators: name: Semay, C.
name: Buisseret, F.
name: Silvestre-Brac, B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The auxiliary field method is a technique to obtain approximate closed formulae for the solutions of both nonrelativistic and semirelativistic eigenequations in quantum mechanics. For a many-body Hamiltonian describing identical particles, it is shown that the approximate eigenvalues can be written as the sum of the kinetic operator evaluated at a mean momentum $p_0$ and of the potential energy computed at a mean distance $r_0$. The quantities $p_0$ and $r_0$ are linked by a simple relation depending on the quantum numbers of the state considered and are determined by an equation which is linked to the generalized virial theorem. The (anti)variational character of the method is discussed, as well as its connection with the perturbation theory. For a nonrelativistic kinematics, general results are obtained for the structure of critical coupling constants for potentials with a finite number of bound states.
description: New improved presentation
Letter from Heinz Geiss to Emmett L. Bennett Jr., September 19, 1961
Creators: name: Geiss, Heinz
Publisher: name: The University of Texas at Austin
Year: 1961
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Heinz Geiss
Colloquium

description: Citing unpredicted political difficulties, Geiss apologizes for not being able to attend the colloquium and expresses his wish to meet him at a more favorable time.
Charge-starved, relativistic jets and blazar variability
Creators: name: Kirk, John G.
name: Mochol, Iwona
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: High energy emission from blazars is thought to arise in a relativistic jet launched by a supermassive black hole. The emission site must be far from the hole and the jet relativistic, in order to avoid absorption of the photons. In extreme cases, rapid variability of the emission suggests that structures of length-scale smaller than the gravitational radius of the central black hole are imprinted on the jet as it is launched, and modulate the radiation released after it has been accelerated to high Lorentz factor. We propose a mechanism which can account for the acceleration of the jet, and for the rapid variability of the radiation, based on the propagation characteristics of large-amplitude waves in charge-starved, polar jets. Using a two-fluid (electron-positron) description, we find the outflows exhibit a delayed acceleration phase, that starts at roughly 1pc, where the inertia associated with the wave currents becomes important. The time-structure imprinted on the jet at launch modulates photons produced by the accelerating jet provided the pair multiplicity in the black-hole magnetosphere is sufficiently small, suggesting that very rapid variability is confined to sources in which the electromagnetic cascade in the black-hole magnetosphere is not prolific.
description: 8 pages, 1 figure. Momentum equation corrected. Conclusions unchanged. Erratum submitted to ApJ
Supplementary document for Dose-efficient in vivo X-ray phase contrast imaging at micrometer resolution - 6666737.pdf
Creators: name: Spiecker, Rebecca
name: Pfeiffer, Pauline
name: Biswal, Adyasha
name: Shcherbinin, Mykola
name: Spiecker, Martin
name: Hessdorfer, Holger
name: Hurst, Mathias
name: Zharov, Yaroslav
name: Bellucci, Valerio
name: Farago, Tomas
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: subject: Applied Physics
subject: Synchrotrons; Accelerators; Instruments and Techniques
subject: Invertebrate Biology
subject: Classical and Physical Optics
subject: Optical Physics not elsewhere classified
subject: Zoology
subject: FOS: Biological sciences

description: Supplement 1
A new baryonic equation of state at sub-nuclear densities for core-collapse simulations
Creators: name: Furusawa, Shun
name: Yamada, Shoichi
name: Sumiyoshi, Kohsuke
name: Suzuki, Hideyuki
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate a new equation of state for baryons at sub-nuclear densities meant for the use in core-collapse simulations of massive stars. The abundance of various nuclei is obtained together with the thermodynamic quantities. The formulation is the NSE description and the liquid drop approximation of nuclei. The model free energy to minimize is calculated by relativistic mean field theory for nucleons and the mass formula for nuclei with the atomic number up to ~ 1000. We have also taken into account the pasta phase, thanks to which the transition to uniform nuclear matter in our EOS occurs in the conventional manner: nuclei are not dissociated to nucleons but survive right up to the transition to uniform nuclear matter. We find that the free energy and other thermodynamical quantities are not very different from those given in the Shen's EOS, one of the standard EOS's that adopt the single nucleus approximation. The average mass is systematically different, on the other hand, which may have an important ramification to the rates of electron captures and coherent neutrino scatterings on nuclei in supernova cores. It is also interesting that the root mean square of the mass number is not very different from the average mass number, since the former is important for the evaluation of coherent scattering rates on nuclei but has been unavailable so far. The EOS table is currently under construction, which will include the weak interaction rates.
description: 34 pages, 11 figures, Accepted for publication ApJ
Combinatorial coding of salt taste in the fly labellum
Creators: name: Jaeger, Alexandria
Publisher: name: University of British Columbia
Year: 2018

description: Salt is an important component of most of the food we ingest daily, yet its detection in food and the control of its consumption remain poorly understood. The gustatory system of an animal underlies the processing of salt taste. With the ability to taste on multiple parts of the body, Drosophila melanogaster makes critical decisions about beneficial tastants to consume, and potentially harmful tastants to avoid. Most chemicals sensed by the gustatory system drive either attraction or repulsion, but salt is unique in that it is appetitive at low concentrations and repulsive at high concentrations. How salt is encoded, processed, modulated, and drives behavior is still not well defined. Through immunolabeling, calcium imaging, and a variety of behavioral assays, we are working on understanding these questions. I have constructed a taste sensory neuron map by co-labeling different gustatory receptors and protein markers for the neurotransmitters glutamate and acetylcholine. Interestingly, while most sensory neurons are cholinergic, I have found that the ENaC family member ppk23 labels a population of glutamateric taste neurons in the fly labellum (the analog of the mammalian tongue). Using calcium imaging, I have characterized the responses of this and other major populations of taste sensory neurons, and found that most, if not all, taste sensory neurons respond to salt in some way. We look at the effect of salt deprivation on sugar and salt sensing labellar GRNs’ physiology to further understand the neural circuitry devoted to this salt sensing pathway. This work challenges the current paradigm of labelled lines coding in the gustatory system of flies, and instead presents evidence of combinatorial coding in salt. Understanding the basic neural circuitry in the fly gustatory system and how that drives behavior in the face of different internal states across modalities, will give insight into how taste information is translated into appropriate feeding responses.
Letter from Albrecht Goetze to Emmett L. Bennett Jr., October 30, 1958
Creators: name: Goetze, Albrecht
Publisher: name: The University of Texas at Austin
Year: 1958
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Albrecht Goetze
The University of Texas at Austin

description: Goetze congratulates Bennett for his new position at the University of Texas and thanks him for a bibliography he sent.
Letter from Henry D. Ephron to Emmett L. Bennett Jr., October 31, 1958
Creators: name: Ephron, Henry D.
Publisher: name: The University of Texas at Austin
Year: 1958
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Henry D. Ephron
Carl Blegen
Nestor

description: Ephron describes how a tachycardia and a strained tendon in his right arm have delayed his sending of materials he promised to work on and describes Dr. Blegen's ideas on treatment. He also congratulates Bennett for his success with Nestor.
Statistical estimation of the quality of quantum-tomography protocols
Creators: name: Bogdanov, Yu. I.
name: Brida, G.
name: Bukeev, I. D.
name: Genovese, M.
name: Kravtsov, K. S.
name: Kulik, S. P.
name: Moreva, E. V.
name: Soloviev, A. A.
name: Shurupov, A. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a complete methodology for testing the performances of quantum tomography protocols. The theory is validated by several numerical examples and by the comparison with experimental results achieved with various protocols for whole families of polarization states of qubits and ququaters including pure, mixed, entangled and separable.
description: 20 pages, 20 figures
Letter from Henry D. Ephron to Emmett L. Bennett Jr., May 8, 1960
Creators: name: Ephron, Henry D.
Publisher: name: The University of Texas at Austin
Year: 1960
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Henry D. Ephron
Harvard Studies in Classical Philology
Linear A

description: Ephron writes Bennett that his results on the Enkomi tablet will appear as an article in the latest volume of Harvard Studies in Classical Philology. He then asks about an incoming text on Linear A that Bennett mentioned as well as what books have material concerning the script.
Entropy driven formation of a half-quantum vortex lattice
Creators: name: Chung, Suk Bum
name: Kivelson, Steven A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Half-quantum vortices (HQVs) can exist in a superconductor or superfluid with an exact or approximate U(1) \times U(1) symmetry, for instance in spinor condensates, 3He-A, Sr2RuO4, and possibly cuprate superconductors with stripe order. In this paper, we show that a lattice of HQVs can be stabilized at finite temperature even when it does not have lower energy than the lattice of full vortices at T = 0 since there is a gain in configurational entropy when a full vortex fractionalizes into a pair of HQVs. Specifically, the lattice of HQVs has an optical branch of phonon modes absent in the lattice of full vortices. Moreover, the HQV lattice at T > 0 can have a different structure than the HQV lattice at T = 0.
description: 12 pages, 2 figures; published version
Supersymmetric P(X,phi) and the Ghost Condensate
Creators: name: Khoury, Justin
name: Lehners, Jean-Luc
name: Ovrut, Burt
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We show how to construct supersymmetric actions for higher-derivative scalar field theories of the form P(X,phi), within the context of d=4, N=1 supersymmetry. This construction is of general use, and is applied to write supersymmetric versions of the Dirac-Born-Infeld action. Our principal application of this formalism is to construct the supersymmetric extension of the ghost condensate. This allows us to study the interplay between supersymmetry, time-dependent backgrounds and violations of the null energy condition.
description: 26 pages, v3: replaced with version to be published
Liquid metal cooled fast reactors
Creators: name: Stieglitz, R.
name: Hering, W.
name: Wetzel, Th.
name: Tromm, W.
Publisher: name: Karlsruhe
Year: 2015

description: Fast spectrum reactors offer the capability for a better utilization of uranium resources. They are in principle capable to produce (“breed”) but also to transmute (“burn”) fissile materials either by means in a critical or in case of lead alloys even in a sub-critical configuration coupled with an accelerator (ADS).. Associated with the fast spectrum, they require not only a different core design but also many other technological solutions to establish a “safe reactor configuration”. Herein, especially sodium and lead (-alloy) facilitate the option to realize a compact and simple reactor design. While lead in contrast to sodium exhibits a higher neutronic efficiency associated with some often advantageous considered safety coefficients sodium cooled reactors proofed already long term operational experience and material compatibility. Irrespective of the liquid metal reactor concept chosen, liquid metals as coolant formulate new challenges with respect to thermal-hydraulics, material
choice, design and system dynamics. Furthermore, the safety demonstration demands a broad validation/verification and in some cases even a modification of presently availalble physical models
and technological solutions for a reliable monitoring and long term operation. After a short introduction into different kinds of some liquid metal reactor options currently developed within international programs the presentation formulates the major challenges related to the use of liquid metals addressing the thermal hydraulics and adapted instrumentation, some material issues and examples for a reliable component design. Herein, the progress attained in the recent years is shown and issues still open are elaborated. The research conducted in the frame of European R&D programs on sodium fast reactors as well as lead and LBE reactors and ADS impacted significantly their design and their operational safety. For some selected examples the safety behaviour of typical incidents in reactor operation are discussed and open issues are addressed.
Bounds on fourth generation induced Lepton Flavour Violating double insertions in Supersymmetry
Creators: name: Garg, Sumit K.
name: Vempati, Sudhir K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive bounds on leptonic double mass insertions of the type $δ^{l}_{i4} δ^{l}_{4j}$ in four generational MSSM, using the present limits on $l_i \to l_j + γ$. Two main features distinguish the rates of these processes in MSSM4 from MSSM3 : (a) tan$β$ is restricted to be very small $\lesssim 3 $ and (b) the large masses for the fourth generation leptons. In spite of small $\tanβ$, there is an enhancement in amplitudes with $llrr$($δ_{i4}^{ll}δ_{4j}^{rr}$) type insertions which pick up the mass of the fourth generation lepton, $m_{τ'}$. We find these bounds to be at least two orders of magnitude more stringent than those in MSSM3.
description: Latex, 15 pages and 7 figures, Published version
Letter from Aram Frenkian to Emmett L. Bennett Jr., October 3, 1959
Creators: name: Frenkian, Aram
Publisher: name: The University of Texas at Austin
Year: 1959
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Aram Frenkian

description: Description not available
Letter from Aram Frenkian to Emmett L. Bennett Jr., July 15, 1961
Creators: name: Frenkian, Aram
Publisher: name: The University of Texas at Austin
Year: 1961
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Aram Frenkian

description: Description not available
Metallo-dielectric core-shell nanospheres as building blocks for optical 3D isotropic negative-index metamaterials
Creators: name: Paniagua-Domínguez, R.
name: López-Tejeira, F.
name: Marqués, R.
name: Sánchez-Gil, J. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Materials showing electromagnetic properties that are not attainable in naturally occurring media, the so called metamaterials, have been lately, and still are, among the most active fields in optical and materials physics and engineering. Among those properties, one of the most attractive is the sub-diffraction resolving capability predicted for media having index of refraction of -1. Here we propose a fully 3D, isotropic metamaterial with strong electric and magnetic responses in the optical regime, based on spherical metallo-dielectric core-shell nanospheres. The magnetic response stems from the lowest, magnetic-dipole resonance of the dielectric shell with high refractive index, and can be tuned to coincide with the plasmon resonance of the metal core, responsible for the electric response. Since the response does not originate from coupling between structures, no particular periodic arrangement needs to be imposed. Moreover, due to the geometry of the constituents, the metamaterial is intrinsically isotropic and polarization independent. It could be realized with current fabrication techniques with materials such as Silver (core) and Silicon or Germanium (shell). For these particular realistic designs, the metamaterials present negative index in the range within 1.2-1.55 microns.
description: 16 pages, 7 figures
Letter from Heinz Geiss to Emmett L. Bennett Jr., December 27, 1959
Creators: name: Geiss, Heinz
Publisher: name: The University of Texas at Austin
Year: 1959
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Heinz Geiss
Nestor

description: Geiss thanks Bennett for the new edition of Nestor and congratulations on his new position.
Letter from Heinz Geiss to Emmett L. Bennett Jr., April 19, 1960
Creators: name: Geiss, Heinz
Publisher: name: The University of Texas at Austin
Year: 1960
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Heinz Geiss
Nestor

description: Geiss asks Bennett for two more extra copies of Nestor and provides updated addresses of one Professor Roland Hampe and Dr. Schmoll.
Characterizing the Variability of Stars with Early-Release Kepler Data
Creators: name: Ciardi, David R.
name: von Braun, Kaspar
name: Bryden, Geoff
name: van Eyken, Julian
name: Howell, Steve B.
name: Kane, Stephen R.
name: Plavchan, Peter
name: Ramirez, Solange V.
name: Stauffer, John R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a variability analysis of the early-release first quarter of data publicly released by the Kepler project. Using the stellar parameters from the Kepler Input Catalog, we have separated the sample into 129,000 dwarfs and 17,000 giants, and further sub-divided the luminosity classes into temperature bins corresponding approximately to the spectral classes A, F, G, K, and M. Utilizing the inherent sampling and time baseline of the public dataset (30 minute sampling and 33.5 day baseline), we have explored the variability of the stellar sample. The overall variability rate of the dwarfs is 25% for the entire sample, but can reach 100% for the brightest groups of stars in the sample. G-dwarfs are found to be the most stable with a dispersion floor of $σ\sim 0.04$ mmag. At the precision of Kepler, $>95$% of the giant stars are variable with a noise floor of $\sim 0.1$ mmag, 0.3 mmag, and 10 mmag for the G-giants, K-giants, and M-giants, respectively. The photometric dispersion of the giants is consistent with acoustic variations of the photosphere; the photometrically-derived predicted radial velocity distribution for the K-giants is in agreement with the measured radial velocity distribution. We have also briefly explored the variability fraction as a function of dataset baseline (1 - 33 days), at the native 30-minute sampling of the public Kepler data. To within the limitations of the data, we find that the overall variability fractions increase as the dataset baseline is increased from 1 day to 33 days, in particular for the most variable stars. The lower mass M-dwarf, K-dwarf, G-dwarf stars increase their variability more significantly than the higher mass F-dwarf and A-dwarf stars as the time-baseline is increased, indicating that the variability of the lower mass stars is mostly characterized by timescales of weeks whi...astroph will not allow longer abstract!
description: Accepted for publication in The Astronomical Journal; Replaces submitted version
title: PLUXIN: report partner meeting september 2021
Creators: name: Devriese, Lisa
name: Asselman, Jana
name: Janssen, Colin
name: Vercauteren, Maaike
name: De Keukelaere, Liesbeth
name: Knaeps, Els
name: Teunkens, Bert
name: Van Damme, Stefan
name: Toorman, Erik
name: Achutha Shettigar, N.
name: Leone, Giulia
name: Bouwens, Jan
name: Catarino, Ana
name: Everaert, Gert
Publisher: name: Flanders Marine Institute
Year: 2021

description: Title : Volume : Issue : Pagination : 8
Letter from Emmett L. Bennett Jr. to Mabel Lang,February 5, 1960
Creators: name: Bennett, Emmett L.
Publisher: name: The University of Texas at Austin
Year: 1960
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Mabel Lang
Linear B
Sealings

description: Bennett suggests that fragment 731 be tried with 39/547.2, indicating that they could be joined together based on the wickerwork marks on their backs. He then asks if specific inscriptions are sealings and if he can get to work on them.
Generalizations of Quantum Discord
Creators: name: Xu, Jianwei
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The original definition of quantum discord of bipartite states was defined over projective measurements, in this paper we discuss some generalizations of it. These generalizations are defined over general measurements, rank-one general measurements or Neumark extension measurements. We investigate the nonnegativity, zero-discord sets of all these quantum discords and some properties about them.
Music in nature, nature in music : sounding the environment in contemporary composition
Creators: name: Kinnear, Tyler
Publisher: name: University of British Columbia
Year: 2017

description: This thesis examines nature as both a concept and source material in contemporary music. Composers reinforce, revise, and challenge existing conceptualizations of nature through their engagement with natural settings, live or recorded environmental sounds, and/or non-sounding environmental information. How composers understand nature informs the ways in which they employ aspects of the physical world in their music. This study explores the interplay between nature-as-concept and nature-as-source-material in art-based walks, outdoor music, electroacoustic composition, and concert-hall pieces. Through analysis of works representative of these wide-ranging genres, this thesis offers a critical assessment of how nature is imagined in a contemporary musical context. The concept of a continuum is used as both a structural and theoretical tool in this study. A gradual transition from real-world encounters with nature to an abstracted experience of it is made over the course of the thesis. The works discussed in Chapter Two exist as lightly edited recordings made by artists during an outdoor walk/improvisation. The outdoor theatre piece considered in Chapter Three takes place at a lake and draws on that environment in several ways during a performance. The two electroacoustic compositions investigated in Chapter Four combine unmodified and modified nature sounds. The natural world is still present in the concert-hall works discussed in Chapter Five, but recorded nature sounds are combined with live instrumental music based on environmental properties and processes. In addition, this thesis traces four themes across works. These are technology, human presence, myth, and the transformation of the environment. The works under consideration demonstrate a range of approaches to composing with and conceptualizing nature. Some of the works comment on environmental issues, such as noise pollution and climate change. Others aim to drive understanding beyond the limits of human perception; that is, to open up new psychological spaces. In different ways, the works under focus illuminate the relationship between humans and the natural world. By stimulating discourse around how we think about nature, these pieces encourage critical thought regarding our place as humans in the physical environment.
Good-deal bounds in a regime-switching diffusion market
Creators: name: Donnelly, Catherine
Publisher: name: arXiv
Year: 2010
Subjects: subject: Pricing of Securities (q-fin.PR)
subject: FOS: Economics and business

description: We consider option pricing in a regime-switching diffusion market. As the market is incomplete, there is no unique price for a derivative. We apply the good-deal pricing bounds idea to obtain ranges for the price of a derivative. As an illustration, we calculate the good-deal pricing bounds for a European call option and we also examine the stability of these bounds when we change the generator of the Markov chain which drives the regime-switching. We find that the pricing bounds depend strongly on the choice of the generator.
Letter from Mabel Lang to , October 15, 1965
Creators: name: Wilson, Helen M.
Publisher: name: The University of Texas at Austin
Year: 1965
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Mabel Lang
Pylos
Germantown Friends School

description: A student thanks Lang for letting them attend her lecture, noting their favorite parts and pondering how cool it would be to become an archaeologist at Pylos.
RIVOJLANISHIDA NUQSONI BO'LGAN O'SMIRLARNI PSIXOLOGO-PEDAGOGIK O'RGANISHNING MAQSAD VA VAZIFALARI
Creators: name: Ishoqova Gulbaxor Uktam qizi ATMU Defektologiya yo'nalishi talabasi Sattorova Mohira Aminqulovna ATMU pedagogika kafedrasi dotsenti
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada rivojlanishida nuqsoni bo’lgan o’smirlari psixologo-pedagogik o’rganishning maqsad va vazifalari haqida. Rivojlanishida nuqsoni bo‘lgan o‘smirlarni psixologo-pedagogik o‘rganish o‘ziga xos xususiyatlarga ega bo‘lib, bu jarayon kichik yoshdagi bolalarni o‘rganishdan sezilarli darajada farq qiladi. Asosiy vazifalar qatoriga psixik rivojlanish xususiyatlarini aniqlash, ta’lim jarayonidagi qiyinchiliklarni o‘rganish, ijtimoiy moslashuv muammolarini tahlil qilish va kasbga yo‘naltirish haqida fikr yuritiladi.  

Kalit so’zlar: Rivojlanish nuqsonlari, psixologo-pedagogik tashxis, ta’lim qiyinchiliklari, ijtimoiy moslashuv, kasbga yo‘naltirish, korreksion ishlar, o‘smir psixologiyasi.
Scale-Dependent Non-Gaussianity as a Generalization of the Local Model
Creators: name: Becker, Adam
name: Huterer, Dragan
name: Kadota, Kenji
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We generalize the local model of primordial non-Gaussianity by promoting the parameter fNL to a general scale-dependent function fNL(k). We calculate the resulting bispectrum and the effect on the bias of dark matter halos, and thus the extent to which fNL(k) can be measured from the large-scale structure observations. By calculating the principal components of fNL(k), we identify scales where this form of non-Gaussianity is best constrained and estimate the overlap with previously studied local and equilateral non-Gaussian models.
description: Accepted to JCAP. 22 pages, 4 figures
The Emergence of Leadership in Social Networks
Creators: name: Clemson, T.
name: Evans, T. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: General Finance (q-fin.GN)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: We study a networked version of the minority game in which agents can choose to follow the choices made by a neighbouring agent in a social network. We show that for a wide variety of networks a leadership structure always emerges, with most agents following the choice made by a few agents. We find a suitable parameterisation which highlights the universal aspects of the behaviour and which also indicates where results depend on the type of social network.
description: 22 pages (as in Physica A but with a few extra references to supplementary material) plus 11 pages of supplementary material not in Physica A version
Asymptotic models for the generation of internal waves by a moving ship, and the dead-water phenomenon
Creators: name: Duchene, Vincent
Publisher: name: arXiv
Year: 2010
Subjects: subject: Analysis of PDEs (math.AP)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This paper deals with the dead-water phenomenon, which occurs when a ship sails in a stratified fluid, and experiences an important drag due to waves below the surface. More generally, we study the generation of internal waves by a disturbance moving at constant speed on top of two layers of fluids of different densities. Starting from the full Euler equations, we present several nonlinear asymptotic models, in the long wave regime. These models are rigorously justified by consistency or convergence results. A careful theoretical and numerical analysis is then provided, in order to predict the behavior of the flow and in which situations the dead-water effect appears.
description: To appear in Nonlinearity
Thiosulfate leaching of natural Acanthite ore in copper-ammonia-ammonium sulfate medium
Creators: name: Lai, Yueh (Yves)
Publisher: name: University of British Columbia
Year: 2017

description: Silver is commonly present in acanthite in nature. Reagents like cyanide are used to extract silver from acanthite ores. However, cyanide can potentially damage human health and environment. The use of cyanide is tightly regulated, thus forcing the industry to seek for alternatives. Thiosulfate is currently the most promising alternative. The leaching chemistry of silver with thiosulfate is complex and maybe supplemented with additives such as ammonia, copper and even ethylenediaminetetraacetic acid. The efficiency of silver leaching is improved with the use of these additives. The use of cyanide for silver leaching in Navidad project in Argentina is not permitted, so the use of thiosulfate leaching as an alternative was investigated. The application of thiosulfate leaching to Navidad ores containing acanthite was the focus of this thesis. This thesis provides experimental evidence that supports the use of thiosulfate with additives as a promising alternative to conventional cyanidation method for the Navidad deposits and for similar deposits, wherever found. Thiosulfate leaching of silver is known for two pathways: silver in acanthite is substituted by cupric or by cuprous ion. The cupric pathway is thermodynamically more favourable, but various factors may affect extraction. Batch leaching tests showed that Navidad ore samples may be leached using thiosulfate, with silver extraction affected by variables including thiosulfate concentration, ammonia concentration, initial copper addition, pH, temperature, EDTA addition and the presence or absence of air sparging. The most significant variables were thiosulfate concentration, ammonia concentration, copper addition and pH. Cyanidation yielded 91.2% extraction of silver from a sample of Loma de la Plata, and thiosulfate leaching with 0.2 M of thiosulfate and 1.0 M of ammonia yielded comparable extractions: 92.1% and 87.0%, respectively. Initial copper addition increases extraction rate from 66.2% to 72.3% after 72 hours, and air sparging increases extraction rate to 84.8% after 72 hours. Other samples from the Navidad Project were also tested and found to be amenable to thiosulfate leaching. LDLPMC and Connector Zone (CZMC) sample were found to have potential for thiosulfate leaching to achieve a high silver extraction.
Bulk-boundary correspondence in three dimensional topological insulators
Creators: name: Isaev, L.
name: Moon, Y. H.
name: Ortiz, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We discuss the relation between bulk topological invariants and the spectrum of surface states in three dimensional non-interacting topological insulators. By studying particular models, and considering general boundary conditions for the electron wavefunction on the crystal surface, we demonstrate that using experimental techniques that probe surface states, only strong topological and trivial insulating phases can be distinguished; the latter state being equivalent to a weak topological insulator. In a strong topological insulator, only the {\it parity} of the number of surface states, but not the number itself, is robust against time-reversal invariant boundary perturbations. Our results suggest a $\z$ definition of the bulk-boundary correspondence, compatible with the $\z$ classification of topological insulators.
description: TeXLive (Unix), revtex4-1, 7 pages, 3 figures
Letter from Mabel Lang to Emmett L. Bennett Jr., May 30, 1956
Creators: name: Lang, Mabel
Publisher: name: The University of Texas at Austin
Year: 1956
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Mabel Lang
Oil

description: Lang provides excerpts from Roger's letters on oil, which discusses the length of time that oil keeps, its storage conditions, and its usage in weaving. Lang then gives her thoughts on the supplied readings.
Hawking radiation by Kerr black holes and conformal symmetry
Creators: name: Agullo, Ivan
name: Navarro-Salas, Jose
name: Olmo, Gonzalo J.
name: Parker, Leonard
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The exponential blueshift associated with the event horizon of a black hole makes conformal symmetry play a fundamental role in accounting for its thermal properties. Using a derivation based on two-point functions, we show that the spectrum of thermal radiation of scalar particles by Kerr (and Schwarzschild) black holes can be explicitly derived on the basis of a $2$-dimensional conformal symmetry arising in the wave equation near the horizon. This result reinforces the recently conjectured relation between Kerr geometry and a $2$-dimensional conformal field theory.
description: Version published in Phys. Rev. Lett
Analytic continuations of Fourier and Stieltjes transforms and generalized moments of probability measures
Creators: name: Hasebe, Takahiro
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60B11, 30D20, 46L53, 46L54

description: We consider analytic continuations of Fourier transforms and Stieltjes transforms. This enables us to define what we call complex moments for some class of probability measures which do not have moments in the usual sense. There are two ways to generalize moments accordingly to Fourier and Stieltjes transforms; however these two turn out to coincide. As applications, we give short proofs of the convergence of probability measures to Cauchy distributions with respect to tensor, free, Boolean and monotone convolutions.
description: 13 pages; to appear in Journal of Theoretical Probability
Current Control and Energy Balancing of a Square-Wave Powered 1AC-3AC Modular Multilevel Converter
Creators: name: Schnarrenberger, Mathias
name: Kammerer, Felix
name: Gommeringer, Mario
name: Kolb, Johannes
name: Braun, Michael
Publisher: name: Karlsruhe
Year: 2015
Subjects: Modular Multilevel Converter (MMC)
control theory
energy and balancing control
galvanic isolation
zero current switching (ZCS)

description: This paper presents a new control method for a Modular Multilevel Converter (MMC) fed by a push-pull converter via a medium frequency (MF) transformer. Application of this topology is a universal high-precision 3AC voltage source for a Power Hardware-in-the-Loop Emulator with a frequency range from DC up to almost the medium frequency. Advantages are high efficiency, very low harmonic distortion and high dynamics of the output voltage which can be used e.g. for simulation of electrical machines. Due to the medium frequency input of the MMC the transformer size for the galvanic isolation is much smaller compared to a low frequency input. Additionally, the required cell capacitance for the MMC is reduced which saves cost and space. The delivered medium frequency square-wave voltage requires an alternating input current of the MMC. For the square-wave powered 1AC-3AC MMC an energy and current control is proposed. Due to very high current dynamic requirements a dead-beat controller as subordinated controller is used to achieve a trapezoidal input current which allows zero current switching (ZCS) at the push-pull-converter. The design of the superposed energy and balancing controller is also shown. For the coupling between the superposed and subordinated control loop the arm power is analyzed and a calculation scheme is given.
Letter from Mabel Lang to Emmett L. Bennett Jr., November 6, 1957
Creators: name: Lang, Mabel
Publisher: name: The University of Texas at Austin
Year: 1957
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Mabel Lang
Linear B

description: Lang suggests a later Greek interpretation of me-tu-wo-ne-wo and an alternative reading of wo-do-we to Bennett.
Semiclassical magnetotransport in graphene n-p junctions
Creators: name: Carmier, Pierre
name: Lewenkopf, Caio
name: Ullmo, Denis
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We provide a semiclassical description of the electronic transport through graphene n-p junctions in the quantum Hall regime. This framework is known to experimentally exhibit conductance plateaus whose origin is still not fully understood. In the magnetic regime (E < vF B), we show the conductance of excited states is essentially zero, while that of the ground state depends on the boundary conditions considered at the edge of the sample. In the electric regime (E > vF B), for a step-like electrostatic potential (abrupt on the scale of the magnetic length), we derive a semiclassical approximation for the conductance in terms of the various snake-like trajectories at the interface of the junction. For a symmetric configuration, the general result can be recovered using a simple scattering approach, providing a transparent analysis of the problem under study. We thoroughly discuss the semiclassical predicted behavior for the conductance and conclude that any approach using fully phase-coherent electrons will hardly account for the experimentally observed plateaus.
description: 22 pages, 19 figures
Bell-Mermin-Klyshko Inequalities and One-way Information Deficit of Dirac Fields in Noninertial Frames
Creators: name: Ye, Biao-Liang
name: Wang, Yao-Kun
name: Fei, Shao-Ming
Publisher: name: arXiv
Year: 2025
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the Bell-Mermin-Klyshko inequalities and the one-way information deficit of Dirac fields in noninertial frames, where the quantum correlations are shared between inertial and accelerated observers due to the Unruh effect. We derive partial analytical results for specific quantum states using the one-way information deficit. Additionally, we present numerical results for the Bell-Mermin-Klyshko inequalities. The study reveals the presence of Bell nonlocality and the significance of the one-way information deficit in relativistic quantum information.
description: 15 pages, 8 figures
Induced spin texture in semiconductor/topological insulator heterostructures
Creators: name: Hutasoit, Jimmy A.
name: Stanescu, Tudor D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that a semiconductor thin film can acquire a non-trivial spin texture due to the proximity effect induced by a topological insulator. The effect stems from coupling to the topological surface states and is present even when the insulator is doped. We propose a semiconductor/topological insulator heterostructure as a device that allows measuring interface properties and probing surface states in uncompensated samples. We also find that the topological insulator surface modes can be significantly broadened and shifted by the presence of metallic contacts.
description: 6 pages, 2 figures, published version
On the Possibility of Anisotropic Curvature in Cosmology
Creators: name: Koivisto, Tomi S.
name: Mota, David F.
name: Quartin, Miguel
name: Zlosnik, Tom G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In addition to shear and vorticity a homogeneous background may also exhibit anisotropic curvature. Here a class of spacetimes is shown to exist where the anisotropy is solely of the latter type, and the shear-free condition is supported by a canonical, massless 2-form field. Such spacetimes possess a preferred direction in the sky and at the same time a CMB which is isotropic at the background level. A distortion of the luminosity distances is derived and used to test the model against the CMB and supernovae (using the Union catalog), and it is concluded that the latter exhibit a higher-than-expected dependence on angular position. It is shown that future surveys could detect a possible preferred direction by observing ~ 20 / (Ω_{k0}^2) supernovae over the whole sky.
description: Extended SNe analysis and corrected some CMB results. Text also extended and references added. 8 pages, 5 figures
Wavelets Applied to the Detection of Point Sources of UHECRs
Creators: name: Batista, Rafael A.
name: Kemp, Ernesto
name: de Almeida, Rogerio M.
name: Daniel, Bruno
Publisher: name: arXiv
Year: 2010
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this work we analyze the effect of smoothing maps containing arrival directions of cosmic rays with a gaussian kernel and kernels of the mexican hat wavelets of orders 1, 2 and 3. The analysis is performed by calculating the amplification of the signal-to-noise ratio for several anisotropy patterns (noise) and different number of events coming from a simulated source (signal) for an ideal detector capable of observing the full sky with equal probability. We extend this analysis for a virtual detector located within the array of detectors of the Pierre Auger Observatory, considering an acceptance law.
description: 9 pages, 8 figures. Proceedings of the Young Researchers Meeting, 2010. Available in: http://www.ifi.unicamp.br/physicae/ojs-2.1.1/index.php/physicae/article/view/191; Physicae, Proceedings of the Young Researchers Meeting, Vol 1, 2011
Effect of intraband Coulomb repulsion on the excitonic spin-density wave
Creators: name: Zocher, Björn
name: Timm, Carsten
name: Brydon, P. M. R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a study of the magnetic ground state of a two-band model with nested electron and hole Fermi surfaces and both interband and intraband Coulomb interactions. Our aim is to understand how the excitonic spin-density-wave (ESDW) state induced by the interband Coulomb repulsion is affected by the intraband interactions. We first determine the magnetic instabilities of our model in an unbiased way by employing the random-phase approximation (RPA) to calculate the static spin susceptibility in the paramagnetic state. From this, we construct the mean-field phase diagram, demonstrating the robustness of the ESDW against the intraband interaction. We then calculate the RPA transverse spin susceptibility in the ESDW state and show that the intraband Coulomb repulsion significantly renormalizes the paramagnon line shape and suppresses the spin-wave velocity. We conclude with a discussion of the relevance of this suppression for the commensurate ESDW state of Mn-doped Cr alloys.
description: 8 pages, 6 figures
Letter from Hans-Gunter Buchholz to Emmett L. Bennett Jr., October 25, 1960
Creators: name: Buchholz, Hans-Gunter
Publisher: name: The University of Texas at Austin
Year: 1960
Subjects: Emmett L. Bennett, Jr. Collection
Emmett L. Bennett, Jr. Collection--Correspondence
Emmett L. Bennett, Jr. Collection--Correspondence--Hans-Gunter Buchholz
Nestor--publication

description: A letter from Hans-Gunter Buchholz to Emmett Bennett on Linear B bibliographic subjects in the Nestor publication.