cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The spatial organization of a south Indian city : Coimbatore
Creators: name: Joy, Annamma
Publisher: name: University of British Columbia
Year: 2010

description: The spatial organization of a traditional Indian city clearly reflected certain central social values. At the heart of India's oldest cities lay all the administrative, commercial and ritually significant spaces, as well as the residences of certain high ranking castes. At the peripheries were the residences of the lower castes and beyond the city limits altogether were the untouchable settlements. The question raised by this thesis is whether the physical layout of a modern industrial city reflects these traditional social values, or perhaps, new ones. Has the introduction of modern business and industry in Coimbatore brought about a clear-cut deliniation of commercial and residential space? Has it likewise necessitated the separation of administrative and ritual areas? This analysis of the spatial organization of the modern, industrial Coimbatore concludes that the original spatial layout of this South Indian city has not been totally replaced by a new one. Instead, this vast urban complex has simply incorporated certain modern areas within its growing limits. Coimbatore city, then provides a blend of old and new principles in its physical layout. This blend can be seen as a result of a slow historical process, in which the city grew by small acretions. The new areas added by its nineteenth century colonial residents became structured according to foreign principles, while some of the city's older areas remained relatively unchanged. The data on which this analysis rests include information on the caste identity of every household on every street for major areas of the city as of 1972, street maps of the city from 1871, 1939 and 1974 bearing locale names that help identify the social identity of particular areas, and also maps of the locations of telephones and important businesses (also for 1972). Copies of all maps are provided with the thesis and could be used in making a further longitudinal study of the city's social characteristics in the future. In sum, the combined responses of the city of Coimbatore to various external forces over time, some social, some military, and some economic, best explain the blend of traditional and modern elements in its spatial layout today.
Magnetically-induced electric polarization in an organo-metallic magnet
Creators: name: Zapf, V. S.
name: Kenzelmann, M.
name: Wolff-Fabris, F.
name: Balakirev, F.
name: Chen, Y.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The coupling between magnetic order and ferroelectricity has been under intense investigation in a wide range of transition-metal oxides. The strongest coupling is obtained in so-called magnetically-induced multiferroics where ferroelectricity arises directly from magnetic order that breaks inversion symmetry. However, it has been difficult to find non-oxide based materials in which these effects occur. Here we present a study of copper dimethyl sulfoxide dichloride (CDC), an organo-metallic quantum magnet containing $S = 1/2$ Cu spins, in which electric polarization arises from non-collinear magnetic order. We show that the electric polarization can be switched in a stunning hysteretic fashion. Because the magnetic order in CDC is mediated by large organic molecules, our study shows that magnetoelectric interactions can exist in this important class of materials, opening the road to designing magnetoelectrics and multiferroics using large molecules as building blocks. Further, we demonstrate that CDC undergoes a magnetoelectric quantum phase transition where both ferroelectric and magnetic order emerge simultaneously as a function of magnetic field at very low temperatures.
Simulation of the mode dynamics in broad-ridge laser diodes
Creators: name: Kuhn, Eduard
Publisher: name: Weierstrass Institute
Year: 2023
Subjects: subject: Laser diode
subject: mode dynamics
subject: gallium nitride
subject: nitride laser diode
subject: mode competition.
subject: 78-10
subject: 78A60
subject: 78M12
subject: 42.55.Px.

description: In this publication a method to simulate the mode dynamics in broad-ridge laser diode is presented. These devices exhibit rich lateral mode dynamics in addition to longitudinal mode dynamics observed in narrow-ridge laser diodes. The mode dynamics are strongly influenced by higher order effects, which are described by effective interaction terms and can derived from the band structure and the carrier scattering in the quantum well. The spatial dependency of pump current densities plays a crucial role in lateral mode dynamics, and thus, a Drift-Diffusion model is employed to calculate the current densities with an additional capturing term.
Strangeness production from pp collisions
Creators: name: Zou, Bing-Song
name: Xie, Ju-Jun
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The study of the strangeness production from pp collisions plays important roles in two aspects: exploring the properties of baryon resonances involved and understanding the strangeness production from heavy ion collisions to explore the properties of high energy and high density nuclear matter. Here we review our recent studies on several most important channels for the strangeness production from pp collisions. The previously ignored contributions from Delta*(1620) and N*(1535) resonances are found to play dominant role for the pp --> n K+ Sigma+, pp --> pK+ Lambda and pp --> pp phi reactions near-thresholds. These contributions should be included for further studies on the strangeness production from both pp collisions and heavy ion collisions.
description: Invited talk at The 10th International Conference on Nucleus-Nucleus Collisions, August 16-21, 2009, Beijing, China
Sakid-Khit Nakha of Udon Thani by Asst. Prof. Dr. Kulajit Sengna
Creators: name: Kittitanut Yanpisit
Publisher: name: The Center of Excellence of Kalasin Phraewa Traditional Textiles of Kalasin University
Year: 2023
Subjects: Khit

description: Asian Journal of Traditional and Innovative Arts and Textiles, 2, 2, 1-5
Observing Strongly Interacting Vector Boson Systems at the CERN Large Hadron Collider
Creators: name: Englert, C.
name: Jager, B.
name: Worek, M.
name: Zeppenfeld, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the potential of the CERN Large Hadron Collider to access a strongly interacting electroweak symmetry breaking sector via weak boson scattering with WWjj, ZZjj and WZjj final states. As examples of models with scalar or vector resonances we concentrate on a scenario with a heavy Higgs boson and on a Warped Higgsless Kaluza-Klein model of narrow spin-one resonances. The signal and the most prominent background processes are evaluated using exact tree-level matrix elements including full off-shell and finite width effects for final states with two tagging jets and four leptons. Using double forward jet-tagging techniques, we derive dedicated cuts on the observable jets and charged leptons to suppress Standard Model backgrounds. We demonstrate that the LHC has substantial sensitivity to strong interactions in the electroweak symmetry breaking sector.
description: 31 pages, 17 figures. References added, minor text revisions, version published by PRD
Sol-gel synthesized double perovskite Gd$_{2}$FeCrO$_{6}$ nanoparticles: Structural, magnetic and optical properties
Creators: name: Bhuyan, M. D. I.
name: Das, Subrata
name: Basith, M. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Lead-free double perovskites are overtaking single perovskites as solar harvesting materials due to their superior stability, excellent catalytic efficiency and minimal toxicity. In this investigation, we have synthesized double perovskite Gd$_{2}$FeCrO$_{6}$ (GFCO) nanoparticles for the first time via a facile sol-gel technique to investigate their structural, magnetic and optical properties. The double perovskite GFCO crystallized in monoclinic structure with P2$_1$/n space group. The Fe/Cr-O bond length was calculated as $\sim$1.95 angstrom from the Raman spectrum which was consistent with the value, $\sim$1.99 angstrom obtained from X-ray diffraction analysis. The average size of the nanoparticles was determined to be $\sim$70 nm by both field emission scanning electron microscopy and transmission electron microscopy. The existence of mixed-valence states of Fe and Cr was confirmed by X-ray photoelectron spectroscopy. The zero-field cooled (ZFC) and field cooled (FC) curves largely diverged below 20 K. A downturn was observed in the ZFC curve at 15 K which corresponds to an antiferromagnetic, Néel transition. The narrow magnetic hysteresis loop recorded at 5 K was nearly saturated and demonstrated an asymmetric shift along the magnetic field axis indicating the concurrence of ferromagnetic and antiferromagnetic domains in GFCO nanoparticles. The UV-visible and photoluminescence spectroscopic analyses unveiled the semiconducting nature of nanostructured GFCO with an optical band gap of 2.0 eV. The as-synthesized thermally stable lead-free GFCO semiconductor might be a potential perovskite material to be employed in photocatalytic and related solar energy applications due to its ability to absorb the visible spectrum of the solar light efficiently
Many-body and temperature effects in two-dimensional quantum droplets in Bose-Bose mixtures
Creators: name: Boudjemaa, Abdelaali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the equilibrium properties of self-bound droplets in two-dimensional Bose mixtures employing the time-dependent Hartree-Fock-Bogoliubov theory. This theory allows one to understand both the many-body and temperature effects beyond the Lee-Huang-Yang description. We calculate higher-order corrections to the excitations, the sound velocity, and the energy of the droplet. Our results for the ground-state energy are compared with the diffusion Monte Carlo data and good agreement is found. The behavior of the depletion and anomalous density of the droplet is also discussed. At finite temperature, we show that the droplet emerges at temperatures well below the Berezinskii-Kosterlitz-Thouless transition temperature. The critical temperature strongly depends on the interspecies interactions. Our study is extended to the finite size droplet by numerically solving the generalized finite-temperature Gross-Pitaevskii equation which is obtained self-consistently from our formalism in the framework of the local density approximation.
description: 8 pages, 6 figures
Frequency noise characterization of narrow-linewidth lasers: A Bayesian approach
Creators: name: Mertenskötter, Lutz
name: Kantner, Markus
Publisher: name: Weierstrass Institute
Year: 2023
Subjects: subject: Laser linewidth
subject: phase noise
subject: self-heterodyne beat note measurement
subject: Bayesian inference
subject: spectral analysis.
subject: 37N20
subject: 60G10
subject: 60G35
subject: 62M20
subject: 82C31

description: We describe a Bayesian estimation approach to infer on the frequency noise characteristics of narrow-linewidth semiconductor lasers from delayed self-heterodyne beat note measurements. Our technique is grounded in a statistical model of the measurement process that accounts for both the impact of the interferometer and the detector noise. The approach yields accurate results, even in scenarios where the intrinsic linewidth plateau is obscured by detector noise. The analysis is carried out using a Markov-chain Monte Carlo method in the frequency domain and exploits prior knowledge about the statistical distribution of the data. The method is validated using simulated time series data from a stochastic laser rate equation model incorporating 1/f -type non-Markovian noise.
Comment on "Density dependence of electron-spin polarization and relaxation in intrinsic GaAs at room temperature"
Creators: name: Jiang, J. H.
name: Wu, M. W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We comment on the conclusion by Teng et al. [J. Phys. D: Appl. Phys. {\bf 42}, 135111 (2009)] that the Bir-Aronov-Pikus mechanism is more important than the D'yakonov-Perel' mechanism at high carrier density in intrinsic bulk GaAs. We point out that the spin relaxation is solely from the D'yakonov-Perel' mechanism.
description: 2 pages, one figure
Ultrafast imaging of photoelectron packets generated from graphite surface
Creators: name: Raman, Ramani K.
name: Tao, Zhensheng
name: Han, Tzong-Ru
name: Ruan, Chong-Yu
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present an electron projection imaging method to study the ultrafast evolution of photoelectron density distribution and transient fields near the surface. The dynamical profile of the photoelectrons from graphite reveals an origin of a thermionic emission, followed by an adiabatic process leading to electron acceleration and cooling before a freely expanding cloud is established. The hot electron emission is found to couple with a surface charge dipole layer formation, with a sheet density several orders of magnitude higher than that of the vacuum emitted cloud.
description: 9 pages, 4 figures. Applied Physics Letter, in press
Finiteness of the triple gauge-ghost vertices in ${\cal N}=1$ supersymmetric gauge theories: the two-loop verification
Creators: name: Kuzmichev, Mikhail
name: Meshcheriakov, Nikolai
name: Novgorodtsev, Sergey
name: Shatalova, Victoria
name: Shirokov, Ilya
name: Stepanyantz, Konstantin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: By an explicit calculation we demonstrate that the triple gauge-ghost vertices in a general renormalizable ${\cal N}=1$ supersymmetric gauge theory are UV finite in the two-loop approximation. For this purpose we calculate the two-loop divergent contribution to the $\bar c^+ V c$-vertex proportional to $(C_2)^2$ and use the finiteness of the two-loop contribution proportional to $C_2 T(R)$ which has been checked earlier. The theory under consideration is regularized by higher covariant derivatives and quantized in a manifestly ${\cal N}=1$ supersymmetric way with the help of ${\cal N}=1$ superspace. The two-loop finiteness of the vertices with one external line of the quantum gauge superfield and two external lines of the Faddeev--Popov ghosts has been verified for a general $ξ$-gauge. This result agrees with the nonrenormalization theorem proved earlier in all orders, which is an important step for the all-loop derivation of the exact NSVZ $β$-function.
description: 19 pages, 8 figures
The quantum ground state of self-organized atomic crystals in optical resonators
Creators: name: Fernández-Vidal, Sonia
name: De Chiara, Gabriele
name: Larson, Jonas
name: Morigi, Giovanna
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cold atoms, driven by a laser and simultaneously coupled to the quantum field of an optical resonator, can self-organize in periodic structures. These structures are supported by the optical lattice, which emerges from the laser light they scatter into the cavity mode, and form when the laser intensity exceeds a threshold value. We study theoretically the quantum ground state of these structures above the pump threshold of self-organization, by mapping the atomic dynamics of the self-organized crystal to a Bose-Hubbard model. We find that the quantum ground state of the self-organized structure can be the one of a Mott-insulator or a superfluid, depending on the pump strength of the driving laser. For very large pump strengths, where the intracavity intensity is maximum and one would expect a Mott-insulator state, we find intervals of parameters where the system is superfluid. These states could be realized in existing experimental setups.
description: 11 pages, 4 figures
Maps and $Δ$-matroids revisited
Creators: name: Avohou, Rémi Cocou
name: Servatius, Brigitte
name: Servatius, Herman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Using Tutte's combinatorial definition of a map we define a $Δ$-matroid purely combinatorially and show that it is identical to Bouchet's topological definition.
Equine and human mutual welfare: a whole subject? Critical aspects and possible strategies in equine-assisted activities and therapies
Creators: name: Li Destri Nicosia, Dora <1974>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: VET/02 Fisiologia veterinaria

description: General aim of the study is equine welfare, particularly concerning different husbandry methodic and inter-specific relational factors. Specific aim is the evaluation of possible mutual (to humans and to equines) benefits and the analysis of critical factors/strength points, of human-horse relationship within Therapeutic Riding context (TR).
The peculiarities of human-horse relationship (compared to the bond with “Pet”) are analyzed, concerning their socio-anthropological, psychological, psycho-dynamic distinctive characteristics.
8 European representative therapeutic riding centers (TRC) were therefore selected (on the basis of their different animals’ husbandry criteria, and of the different rehabilitative methodologies adopted). TRC were investigated through 2 different questionnaires, specifically settled to access objective/subjective animal welfare parameters; the quality of human-horse relationship; technicians’ emotional experienced.
3 Centers were further selected, and behavioral (145 hours of behavioral recording) and physiological parameters (heart rate and heart rate variability) were evaluated, aimed to access equine welfare and horses’ adaptive responses/coping (towards general environment and towards TR job). 
Moreover a specific “handling-task” was ideated and experimented, aimed to measure the quality of TR technicians-horses relationship.
We did therefore evaluate both the individual horses’ responses and the possible differences among Centers.
Data collected highlight the lack of univocal standardized methodic, concerning the general animals’ management and the specific methodologies (aimed to improve animal welfare and to empower TR efficacy). Some positive and some critical aspects were detected concerning TR personnel-horse relationship.
Another experimental approach did evaluate the efficacy (concerning the mutual benefits’ empowerment) of an “ethologically-fitted” TR intervention, aimed to educate children to and through the relationship with horses.
Our data evidenced that the improvement of human horse relationship, through structured educational programs for TR personnel might have important consequences both to human and equine welfare.
Strongly reshaped organic-metal interfaces: Tetracyanoethylene on Cu(100)
Creators: name: Bedwani, Stéphane
name: Wegner, Daniel
name: Crommie, Michael F.
name: Rochefort, Alain
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The interaction of the strong electron-acceptor tetracyanoethylene (TCNE) with the Cu(100) surface has been studied with scanning tunneling microscopy experiments and first-principles density functional theory calculations. We compare two different adsorption models with the experimental results and show that the molecular self-assembly is caused by a strong structural modification of the Cu(100) surface rather than the formation of a coordination network by diffusing Cu adatoms. Surface atoms become highly buckled and the chemisorption of TCNE is accompanied by a partial charge-transfer.
description: 4 pages, 3 figures, to appear in Physical Review Letters
A Short Guide to Debris Disk Spectroscopy
Creators: name: Chen, Christine H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Multi-wavelength spectroscopy can be used to constrain the dust and gas properties in debris disks. Circumstellar dust absorbs and scatters incident stellar light. The scattered light is sometimes resolved spatially at visual and near-infrared wavelengths using high contrast imaging techniques that suppress light from the central star. The thermal emission is inferred from infrared through submillimeter excess emission that may be 1-2 orders of magnitude brighter than the stellar photosphere alone. If the disk is not spatially resolved, then the radial distribution of the dust can be inferred from Spectral Energy Distribution (SED) modeling. If the grains are sufficiently small and warm, then their composition can be determined from mid-infrared spectroscopy. Otherwise, their composition may be determined from reflectance and/or far-infrared spectroscopy. Atomic and molecular gas absorb and resonantly scatter stellar light. Since the gas is believed to be secondary, detailed analysis analysis of the gas distribution, kinematics, and composition may also shed light on the dust composition and processing history.
description: 6 pages, 2nd Subaru International Conference on Exoplanets and Disks: Their Formation and Diversity, Keauhou - Hawaii, 9-12 March 2009
A cold accretion flow onto one component of a multiple protostellar system
Creators: name: Murillo, Nadia M.
name: van Dishoeck, Ewine F.
name: Hacar, Alvaro
name: Harsono, Daniel
name: Jørgensen, Jes K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: Gas accretion flows transport material from the cloud core onto the protostar. In multiple protostellar systems, it is not clear if the delivery mechanism is preferential or evenly distributed among the components. Aims: Gas accretion flows within IRAS16293 is explored out to 6000 AU. Methods: ALMA Band 3 observations of low-$J$ transitions of HNC, cyanopolyynes (HC$_3$N, HC$_5$N), and N$_2$H$^+$ are used to probe the cloud core structure at ~100 AU resolution. Additional Band 3 archival data provide low-$J$ HCN and SiO lines. These data are compared with the corresponding higher-$J$ lines from the PILS Band 7 data for excitation analysis. The HNC/HCN ratio is used as a temperature tracer. Results: The low-$J$ transitions of HC$_3$N, HC$_5$N, HNC and N$_2$H$^+$ trace extended and elongated structures from 6000 AU down to ~100 AU, without accompanying dust continuum emission. Two structures are identified: one traces a flow that is likely accreting toward the most luminous component of the system IRAS16293 A. Temperatures inferred from the HCN/HNC ratio suggest that the gas in this flow is cold, between 10 and 30 K. The other structure is part of an UV-irradiated cavity wall entrained by one of the outflows. The two outflows driven by IRAS16293 A present different molecular gas distributions. Conclusions: Accretion of cold gas is seen from 6000 AU scales onto IRAS16293 A, but not onto source B, indicates that cloud core material accretion is competitive due to feedback onto a dominant component in an embedded multiple protostellar system. The preferential delivery of material could explain the higher luminosity and multiplicity of source A compared to source B. The results of this work demonstrate that several different molecular species, and multiple transitions of each species, are needed to confirm and characterize accretion flows in protostellar cloud cores.
description: 17 pages, 10 figures, accepted for publication in A&A
CIFRA National Survey: Uruguay October 1995
Creators: name: CIFRA, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Newspaper reading habits; inheritance money usage; recent money investments; economic situation of the country; approval of president Julio Maria Sanguinetti; approval of Parliament; approval of district mayor; likability of politicians and presidential candidates; relationship of government with international governments and countries; knowledge and concerns about environmental phenomena; experience catcalling/been catcalled; reasons for catcalling; economic situation of your family; work status; interest in saving money for retirement funds; where you save your money; recent purchase of cigarettes; recent purchase of instant coffee; previous purchase of contraband; interest in politics; disagreements between Tabare Vazquez and Danilo Astori, former president and vice-president; political spectrum position; past voting history. Montevideo: Recent medical visits; personal medical service choices; membership status of a social services program; listening to the morning radio. For those who make retirement fund contributions: Stance on social security reform; public vs. private banking. National Agency for Research and Innovation (ANII) Collection.
Local government reorganization: a case study in local government change in Nanaimo, B.C.
Creators: name: Strongitharm, B. Deane
Publisher: name: University of British Columbia
Year: 2010

description: This thesis is an examination of the boundary restructure efforts of Nanaimo, B.C. It examines and compares both the background which precipitated the restructure referendum and the actions and attitudes by individuals, groups, and Government that prefaced the November 2, 1974 vote. It also explores the literature and legislation that is germane to the analysis and relates it to the above. Finally, some consideration is given to speculating probable effects of the amalgamation decision. While there are many reasons which explain the need for a re-alignment of local Government boundaries, the principal one is that the existing political structure impedes the most effective delivery of services to the public. The author's investigations revealed that there were important conflicts in the pattern of local Government in Nanaimo that could be mitigated with amalgamation. Irrespective of the stated benefits, a significant segment of the population opposed amalagamation. Opposition sentiment was based on a variety of arguments, with the effects on taxes apparently the most vocal issue. Opposition sentiment was obviously strong as the outcome of the referendum showed that only 52% were in favour of amalgamation. This despite the fact that a thorough examination of the implications of restructure by a special restructure committee concluded that there would be little initial impact on the tax burden. In general, the thesis is an assessment of an event, and as such, no specific or pre-conceived hypothesis was stated. Three recommendations of particular note, concluded specifically from the case study are: (i) the need for an immediate change in property taxation laws affecting non-municipal areas in British Columbia to bring the taxes in line with the actual cost of services provided by the province to non-municipal areas. (ii) the Provincial Government, in the Nanaimo situation, should be prepared to augment their existing financial commitment to help defray unanticipated costs if they (costs) become excessively burdensome. In future restructure proposals, however the Province should consider undertaking a more comprehensive review of cost figures, projected by local restructure committees to ensure their accuracy. (iii) in any future restructure proposals, the Provincial Government should ensure that the local people responsible for administering the restructure program have engaged in an active and effective campaign of making the local citizens aware of the full ramifications of amalgamation, (both the positive and negative aspects), and that a concerted effort is made to encourage the participation of all residents.
Charmless Hadronic B-Meson Decays
Creators: name: Cheng, Hai-Yang
name: Smith, Jim
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We give an overview of the experimental measurements and the theoretical understanding of the branching fractions and CP-violating asymmetries of charmless B-meson decays. Most experimetal results are from the BABAR and Belle experiments during the past decade. The global features of these experimental results are typically well described by the QCD-motivated theories such as QCD factorization, pQCD and soft-collinear effective theory. The agreement between theory and experiment is generally satisfactory, though there remain some unsolved puzzles that pose a great challenge to both theorists and experimentalists.
description: 33 pages, 11 figures, 1 table, invited review to appear in Ann. Rev. of Nucl. and Part. Science
Bremsstrahlung and pair production processes at low energies, multi-differential cross section and polarization phenomena
Creators: name: Kuraev, E. A.
name: Bystritskiy, Yu. M.
name: Shatnev, M.
name: Tomasi-Gustafsson, E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Radiative electron-proton scattering is studied in peripheral kinematics, where the scattered electron and photon move close to the direction of the initial electron. Even in the case of unpolarized initial electron the photon may have a definite polarization. The differential cross sections with longitudinally or transversal polarized initial electron are calculated. The same phenomena are considered for the production of an electron-positron pair by the photon, where the final positron (electron) can be also polarized. Differential distributions for the case of polarized initial photon are given. Both cases of unscreened and completely screened atomic targets are considered.
description: 15 pages, 6 figures
What does the IMF really tell us about star formation?
Creators: name: Kouwenhoven, M. B. N.
name: Goodwin, S. P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Obtaining accurate measurements of the initial mass function (IMF) is often considered to be the key to understanding star formation, and a universal IMF is often assumed to imply a universal star formation process. Here, we illustrate that different modes of star formation can result in the same IMF, and that, in order to truly understand star formation, a deeper understanding of the primordial binary population is necessary. Detailed knowledge on the binary fraction, mass ratio distribution, and other binary parameters, as a function of mass, is a requirement for recovering the star formation process from stellar population measurements.
description: To be published in the proceedings of IAU Symposium 262 "Stellar Populations - Planning for the Next Decade"
CIFRA National Survey: Uruguay August 1994
Creators: name: CIFRA, In Bogliaccini, Juan, And Queirolo Rosario Laboratorio De Opinión Pública And Redes Sociales En Uruguay Collection (Social Networks And Public Opinion Lab Collection)
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Economic situation of the country; interest in politics; approval of President Luis Alberto Lacalle; approval of Parliament; approval of the district mayor; voting habits in family; likability of politicians and presidential candidates; how you were affected by inflation; economic systems for the country; political spectrum affiliation; economic situation of your family; importance of liberty and equality; characteristics of a good president; problems in government; likability of political parties; violence/abuse in families; alternatives to Lacalle; religious views; past voting history; future voting tendencies; favoritism of a constitutional reformation; ideal mayoral political party. Montevideo: National healthcare quality; personal medical services; problems with district public services; cleanliness of streets and public areas; voting for a mayoral candidate. National Agency for Research and Innovation (ANII) Collection
Quantum combinatorial designs and $k$-uniform states
Creators: name: Zang, Yajuan
name: Facchi, Paolo
name: Tian, Zihong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Goyeneche et al.\ [Phys.\ Rev.\ A \textbf{97}, 062326 (2018)] introduced several classes of quantum combinatorial designs, namely quantum Latin squares, quantum Latin cubes, and the notion of orthogonality on them. They also showed that mutually orthogonal quantum Latin arrangements can be entangled in the same way in which quantum states are entangled. Moreover, they established a relationship between quantum combinatorial designs and a remarkable class of entangled states called $k$-uniform states, i.e., multipartite pure states such that every reduction to $k$ parties is maximally mixed. In this article, we put forward the notions of incomplete quantum Latin squares and orthogonality on them and present construction methods for mutually orthogonal quantum Latin squares and mutually orthogonal quantum Latin cubes. Furthermore, we introduce the notions of generalized mutually orthogonal quantum Latin squares and generalized mutually orthogonal quantum Latin cubes, which are equivalent to quantum orthogonal arrays of size $d^2$ and $d^3$, respectively, and thus naturally provide $2$- and $3$-uniform states.
Constraining Modified Gravity and Growth with Weak Lensing
Creators: name: Thomas, Shaun A.
name: Abdalla, Filipe B.
name: Weller, Jochen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The idea that we live in a Universe undergoing a period of acceleration is a strongly held notion in cosmology. As this can, potentially, be explained with a modification to General Relativity we look at current cosmological data with the purpose of testing aspects of gravity. Firstly we constrain a phenomenological model (mDGP) motivated by a possible extra dimension. This is characterised by $α$ which interpolates between (LCDM) and (the Dvali Gabadadze Porrati (DGP) model). In addition, we analyse general signatures of modified gravity given by the growth parameter $γ$ and power spectrum parameter $Σ$. We utilise Weak Lensing data (CFHTLS-wide) in combination with Baryon Acoustic Oscillations (BAOs) and Supernovae data. We show that current weak lensing data is not yet capable of constraining either model in isolation. However we demonstrate that this probe is highly beneficial, for in combination with BAOs and Supernovae we obtain $α< 0.58$ and $α< 0.91$ at $1σ$ and $2σ$, respectively. Without the lensing data no constraint is possible. Both analyses disfavour the flat DGP braneworld model ($α= 1$) at over $2σ$. We highlight these are insensitive to potential systematics in the lensing data. For the growth signature $γ$ we show that, in combination, these probes do not yet have sufficient constraining power. Finally, we look beyond these present capabilities and demonstrate that Euclid, a future weak lensing survey, will deeply probe the nature of gravity. A $1σ$ error of 0.104 is found for $α$ ($l_{max} = 500$) whereas for the general modified signatures we forecast $1σ$ errors of 0.045 for $γ$ and 0.25 for $Σ_{0}$ ($l_{max} = 500$), which is further tightened to 0.038 for $γ$ and 0.069 for $Σ_{0}$ ($l_{max} = 10000$).
description: 15 pages, 9 figures
The future of high-resolution spectroscopy in the soft X-ray band (0.1 – 10 keV)
Creators: name: den Herder, Jan-Willem
Publisher: name: Zenodo
Year: 2023

description: In this presentation, we introduce high-resolution spectroscopy in the soft X-ray band, including the (future) missions and science cases that have been and are expected to be relevant in this field. This has been presented at the AHEAD2020 high-resolution spectroscopy school in Alicante, Spain.
Finite temperature topological order in 2D topological color codes
Creators: name: Kargarian, Mehdi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work the topological order at finite temperature in two-dimensional color code is studied. The topological entropy is used to measure the behavior of the topological order. Topological order in color code arises from the colored string-net structures. By imposing the hard constrained limit the exact solution of the entanglement entropy becomes possible. For finite size systems, by raising the temperature, one type of string-net structure is thermalized and the associative topological entropy vanishes. In the thermodynamic limit the underlying topological order is fragile even at very low temperatures. Taking first the thermodynamic limit and then the zero-temperature limit and vice versa does not commute, and their difference is related only to the topology of regions. The contribution of the colors and symmetry of the model in the topological entropy is also discussed. It is shown how the gauge symmetry of the color code underlies the topological entropy.
description: 20 pages, 5 figures
title: Addiction research consortium: losing and regaining control over drug intake (ReCoDe) - from trajectories to mechanisms and interventions
Creators: name: Heinz, Andreas
name: Kiefer, Falk
name: Smolka, Michael N.
name: Endrass, Tanja
name: Beste, Christian
name: Beck, Anne
name: Liu, Shuyan
name: Genauck, Alexander
name: Romund, Lydia
name: Rapp, Michael A.
name: Tost, Heike
name: Spanagel, Rainer
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 610 Medizin und Gesundheit

description: One of the major risk factors for global death and disability is alcohol, tobacco, and illicit drug use. While there is increasing knowledge with respect to individual factors promoting the initiation and maintenance of substance use disorders (SUDs), disease trajectories involved in losing and regaining control over drug intake (ReCoDe) are still not well described. Our newly formed German Collaborative Research Centre (CRC) on ReCoDe has an interdisciplinary approach funded by the German Research Foundation (DFG) with a 12-year perspective. The main goals of our research consortium are (i) to identify triggers and modifying factors that longitudinally modulate the trajectories of losing and regaining control over drug consumption in real life, (ii) to study underlying behavioral, cognitive, and neurobiological mechanisms, and (iii) to implicate mechanism-based interventions. These goals will be achieved by: (i) using mobile health (m-health) tools to longitudinally monitor the effects of triggers (drug cues, stressors, and priming doses) and modify factors (eg, age, gender, physical activity, and cognitive control) on drug consumption patterns in real-life conditions and in animal models of addiction; (ii) the identification and computational modeling of key mechanisms mediating the effects of such triggers and modifying factors on goal-directed, habitual, and compulsive aspects of behavior from human studies and animal models; and (iii) developing and testing interventions that specifically target the underlying mechanisms for regaining control over drug intake.
description: Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe; 727
title: AngioRM sin contraste intravenoso frente a angioRM convencional en el estudio de estenosis de las arterias renales: Estudio prospectivo comparativo.
Creators: name: Rodríguez-Vigil Junco, Beatriz
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Arteries / Aorta
subject: Interventional non-vascular
subject: Kidney
subject: MR-Angiography
subject: Technology assessment
subject: Arteriosclerosis
subject: Hypertension

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
Comparar la precisión de la angioRM sin gadolinio intravenoso (secuencia 3D TrueFISP,
NATIVE) con la angioRM convencional con gadolinio intravenoso en la valoración de estenosis de las arterias...
Adiabatic Wave-Particle Interaction Revisited
Creators: name: Dewar, R. L.
name: Yap, J. C. -C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In this paper we calculate and visualize the dynamics of an ensemble of electrons trapping in an electrostatic wave of slowly increasing amplitude, illustrating that, despite disordering of particles in angle during the trapping transition as they pass close to X-points, there is still an adiabatic invariant for the great majority of particles that allows the long-time distribution function to be predicted. Possible application of this approach to recent work on the nonlinear frequency shift of a driven wave is briefly discussed.
Propagation of temporal mode multiplexed optical fields in fibers: influence of dispersion
Creators: name: Zhao, Wen
name: Huo, Nan
name: Cui, Liang
name: Li, Xiaoying
name: Ou, Z. Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Exploiting two interfering fields which are initially in the same temporal mode but with the spectra altered by propagating through different fibers, we characterize how the spectra of temporal modes changes with the fiber induced dispersion by measuring the fourth-order interference when the order number and bandwidth of temporal modes are varied. The experiment is done by launching a pulsed field in different temporal modes into an unbalanced Mach-Zehnder interferometer, in which the fiber lengths in two arms are different. The results show that the mode mismatch of two interfering fields, reflected by the visibility and pattern of interference, is not only dependent upon the amount of unbalanced dispersion but also related to the order number of temporal mode. In particular, the two interfering fields may become orthogonal under a modest amount of unbalanced dispersion when the mode number of the fields is $k\geq2$. Moreover, we discuss how to recover the spectrally distorted temporal mode by measuring and compensating the transmission induced dispersion. Our investigation paves the way for further investigating the distribution of temporally multiplexed quantum states in fiber network.
Extended DFT+U+V method with on-site and inter-site electronic interactions
Creators: name: Campo, Vivaldo Leiria
name: Cococcioni, Matteo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this article we introduce a generalization of the popular DFT+U method based on the extended Hubbard model that includes on-site and inter-site electronic interactions. The novel corrective Hamiltonian is designed to study systems for which electrons are not completely localized on atomic states (according to the general scheme of Mott localization) and hybridization between orbitals from different sites plays an important role. The application of the extended functional to archetypal Mott - charge-transfer (NiO) and covalently bonded insulators (Si and GaAs) demonstrates its accuracy and versatility and the possibility to obtain a unifying and equally accurate description for a broad range of very diverse systems.
Finite thermostats in classical and quantum nonequilibrium
Creators: name: Gallavotti, Giovanni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Abstract: Models for studying systems in stationary states but out of equilibrium have often empirical nature and very often break the fundamental time reversal symmetry. Here a formal interpretation will be discussed of the widespread idea that, in any event, the particular friction model choice should not matter physically. The proposal is, quite generally, that for the same physical system a time reversible model should be possible. Examples about the Navier-Stokes equations are given.
description: 14th Granada Seminar on Quantum Systems in and out of Equilibrium: Fundamentals, dynamics and applications 20-23 June 2017; final published version; (with supplementary material 2 pages added after the references)
title: Very high energy γ-ray emission from two blazars of unknown redshift and upper limits on their distance
Creators: name: Abdalla, Hassan
name: Adam, Remi
name: Aharonian, Felix
name: Benkhali, Faical Ait
name: Angüner, E. O.
name: Arakawa, Masanori
name: Arcaro, C
name: Armand, Catherine
name: Armstrong, T.
name: Egberts, Kathrin
Publisher: name: Universität Potsdam
Year: 2021
Subjects: subject: 530 Physik

description: We report on the detection of very high energy (VHE; E > 100 GeV) gamma-ray emission from the BL Lac objects KUV 00311-1938 and PKS 1440-389 with the High Energy Stereoscopic System (H.E.S.S.). H.E.S.S. observations were accompanied or preceded by multiwavelength observations with Fermi/LAT, XRT and UVOT onboard the Swift satellite, and ATOM. Based on an extrapolation of the Fermi/LAT spectrum towards the VHE gamma-ray regime, we deduce a 95 per cent confidence level upper limit on the unknown redshift of KUV 00311-1938 of z < 0.98 and of PKS 1440-389 of z < 0.53. When combined with previous spectroscopy results, the redshift of KUV 00311-1938 is constrained to 0.51 <= z < 0.98 and of PKS 1440-389 to 0.14 (sic) z < 0.53.
description: Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1202
Absence of temperature-dependent phonon anomalies in Sr2IrO4 and Sr3Ir2O7
Creators: name: Sen, K.
name: Heid, R.
name: Souliou, S. M.
name: Boll, D.
name: Bosak, A.
name: Sung, N. H.
name: Bertinshaw, J.
name: Gretarsson, H.
name: Kim, B. J.
name: Weber, F.
name: Tacon, M. Le
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Following previous works reporting an anomalous behavior of several zone-center optical phonons across the magnetic transition of square lattice iridates Sr2IrO4 and Sr3Ir2O7, we have investigated the lattice dynamics as a function of momentum in these materials by means of high-resolution inelastic x-ray scattering (IXS). The observed phonon energies and scattering intensities across the Brillouin zone are in excellent agreement with ab-initio lattice dynamical calculations based on non-magnetic density-functional-perturbation theory (DFPT). Our results do not evidence any renormalization of the phonons at finite momentum across the magnetic transition of Sr2IrO4. The only anomalous behavior was detected for the in-plane polarized longitudinal-acoustic phonon branch in Sr3Ir2O7, which anomalously softens towards low temperatures and might be related to anisotropic negative thermal expansion in this compound. No anomalies related to potential charge ordering were observed.