cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Epilogue
Creators: name: Fabbiano, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The IAU Symposium 230, Populations of High Energy Sources in Galaxies, has been a wide-spectrum affair, with talks discussing results from the soft X-ray to the Gamma-ray range on virtually the entire universe, from our Galaxy to the high redshift regions when first galaxies emerged. I do not name any presenter in this summary, but concentrate on themes and results that I have found striking.
description: Write up of the conference summary talk given at the IAU Symposium 230, Populations of high energy sources in galaxies, held in Dublin (Ireland), August 15-19, 2005
Elicitation of miratives and evidentials
Creators: name: Parker, Verdena
name: Escamilla, Ramón
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: hup

description: Audio files VP-300717-05 and VP-300717-06: miratives (and evidentials), following Aikhenvald 2012, "The Essence of Mirativity," Linguistic Typology 16(3): 435-485.
Elicitation of miratives and evidentials
Creators: name: Parker, Verdena
name: Escamilla, Ramón
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: hup

description: Audio file VP-300717-03: miratives and evidentials, based on Hill 2012 ("'Mirativity' does not exist: ḥdug in 'Lhasa' Tibetan and Other Suspects," Linguistic Typology 16: 389-433); transition into Villalta 2008 ("Mood and Gradability: An Investigation of the Subjunctive Mood in Spanish," Linguistics and Philosophy 31(4): 467-522), with speech and psych predicates: 'think that' 'be happy that' 'be disappointed that' 'want X to'; 'have to X'; all with evidentials.
Classical Integrable Super sinh-Gordon equation with defects
Creators: name: Gomes, J. F.
name: Ymai, L. H.
name: Zimerman, A. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The introduction of defects is discussed under the Lagrangian formalism and Backlund transformations for the N=1 super sinh-Gordon model. Modified conserved momentum and energy are constructed for this case. Some explicit examples of different Backlund solitons solutions are discussed. The Lax formulation within the space split by the defect leads to the integrability of the model and henceforth to the existence of an infinite number of constants of motion
description: Latex 16 pages. To appear in J. Phys. A, Mathematical and General
Simultaneous gain profile design and noise figure prediction for Raman amplifiers using machine learning
Creators: name: de Moura, Uiara Celine
name: Brusin, Ann Margareth Rosa
name: Carena, Andrea
name: Zibar, Darko
name: Da Ros, Francesco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A machine learning framework predicting pump powers and noise figure profile for a target distributed Raman amplifier gain profile is experimentally demonstrated. We employ a single-layer neural network to learn the mapping from the gain profiles to the pump powers and noise figures. The obtained results show highly-accurate gain profile designs and noise figure predictions, with a maximum error on average of ~0.3dB. This framework provides the comprehensive characterization of the Raman amplifier and thus is a valuable tool for predicting the performance of the next-generation optical communication systems, expected to employ Raman amplification.
description: 4 pages, 5 figures
Heavy Quarkonium at finite temperature and chemical potential
Creators: name: Carignano, Stefano
name: Soto, Joan
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We generalize known results for heavy quarkonium in a thermal bath to the case of a finite baryonic density, and provide a number of formulas for the energy shift and decay width that hold at weak coupling for sufficiently large temperature and/or chemical potential. We find that a non-vanishing decay width requires a temperature larger than the typical binding energy, no matter how large the chemical potential is. This implies that at zero temperature the dissociation mechanism of heavy quarkonium is due entirely to screening, unlike in the finite temperature case. We use several effective theories in order to sort out the contributions of the relevant energy and momentum scales. In particular, we consider contributions of the so called quasi-static magnetic modes. The generalization to the case of a finite isospin/strangeness chemical potential is trivial. We discuss possible applications to the SIS and NICA conditions, and compare with available lattice results.
description: 26 pages, 12 figures. v2: extended discussion, fixed typos. matched published version
Classical and quantum general relativity: a new paradigm
Creators: name: Gambini, Rodolfo
name: Pullin, Jorge
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We argue that recent developments in discretizations of classical and quantum gravity imply a new paradigm for doing research in these areas. The paradigm consists in discretizing the theory in such a way that the resulting discrete theory has no constraints. This solves many of the hard conceptual problems of quantum gravity. It also appears as a useful tool in some numerical simulations of interest in classical relativity. We outline some of the salient aspects and results of this new framework.
description: 8 pages, one figure, fifth prize of the Gravity Research Foundation 2005 essay competition
Semantic and phonological aphasia treatment (Schwen Blackett et al., 2025)
Creators: name: Schwen Blackett, Deena
name: Kristinsson, Sigfus
name: Walker, Grant M.
name: Sayers, Sara
name: Gibson, Makayla
name: Wilmskoetter, Janina
name: Ouden, Dirk B. den
name: Fridriksson, Julius
name: Bonilha, Leonardo
Publisher: name: ASHA journals
Year: 2025
Subjects: classificationCode: 470101
subject: Communication studies

description: Purpose: The purpose of this work is to examine whether therapy-related improvements in trained versus untrained items (acquisition and response generalization, respectively) are differentially affected by phonological versus semantic language treatments and to investigate individual variables associated with treatment response.Method: Sixty-three participants with chronic poststroke aphasia were included in this retrospective analysis of data from a large, multisite clinical trial with an unblinded cross-over design in which all participants underwent 3 weeks of semantic treatment and 3 weeks of phonological treatment. A linear mixed-effects model was used to examine treatment acquisition and generalization effects for the two treatment types. Multiple regression analyses were also conducted to examine individual participant factors associated with acquisition compared to generalization.Results: Results showed main effects of outcome type (acquisition vs. response generalization) and treatment type (semantic vs. phonological) on posttreatment changes in naming and an interaction between these factors: For acquisition, phonological treatment resulted in better gains than semantic treatment, whereas for response generalization, semantic treatment resulted in slightly better gains than phonological treatment. There were no significant associates of generalization gains. However, acquisition after phonological treatment was associated with less severe aphasia and higher nonverbal semantic processing abilities at baseline, whereas acquisition after semantic treatment was associated with apraxia of speech.Conclusions: On average, phonological treatment may be more effective for acquiring trained items, whereas semantic treatment may be more effective for response generalization to untrained items. Moreover, acquisition gains are associated with individual baseline variables. These findings could have clinical implications for treatment planning.Supplemental Material S1. A comparison of item acquisition and generalization for semantic versus phonological treatment of aphasia.Schwen Blackett, D., Kristinsson, S., Walker, G., Sayers, S., Gibson, M., Wilmskoetter, J., den Ouden, D. B., Fridriksson, J., & Bonilha, L. (2025). A comparison of item acquisition and response generalization for semantic versus phonological treatment of aphasia. Journal of Speech, Language, and Hearing Research, 68(4), 1821–1836. https://doi.org/10.1044/2024_JSLHR-24-00304
Existence, renormalization, and regularity properties of higher order derivatives of self-intersection local time of fractional Brownian motion
Creators: name: Das, Kaustav
name: Markowsky, Greg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G22

description: In a recent paper by Yu (arXiv:2008.05633, 2020), higher order derivatives of self-intersection local time of fractional Brownian motion were defined, and existence over certain regions of the Hurst parameter $H$ was proved. Utilizing the Wiener chaos expansion, we provide new proofs of Yu's results, and show how a Varadhan-type renormalization can be used to extend the range of convergence for the even derivatives.
Universal Quantum Fluctuation-Dissipation Relation for Systems Far From Equilibrium
Creators: name: Zhang, Zhedong
name: Wang, Xuanhua
name: Wang, Jin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Fluctuations associated with relaxations in far-from-equilibrium regime is of fundamental interest for a large variety of systems within broad scales. Recent advances in techniques such as spectroscopy have generated the possibility for measuring the fluctuations of the mesoscopic systems in connection to the relaxation processes when driving the underlying quantum systems far from equilibrium. We present a general nonequilibrium Fluctuation-Dissipation Theorem (FDT) for quantum Markovian processes where the detailed-balance condition is violated. Apart from the fluctuations, the relaxation involves extra correlation that is governed by the quantum curl flux emerged in the far-from-equilibrium regime. Such a contribution vanishes for the thermal equilibrium, so that the conventional FDT is recovered. We finally apply the nonequilibrium FDT to the molecular junctions, elaborating the detailed-balance-breaking effects on the optical transmission spectrum. Our results have the advantage of and exceed the scope of the fluctuation-dissipation relation in the perturbative and near equilibrium regimes, and is of broad interest for the study of quantum thermodynamics.ation in the perturbative and near equilibrium regimes, and is of broad interest for the study of quantum thermodynamics.
title: Long-Term Outcomes of the PRESERFLO MicroShunt Implant in a Heterogeneous Glaucoma Cohort
Creators: name: Storp, Jens Julian
name: Vietmeier, Friederike Elisabeth
name: Merté, Ralph-Laurent
name: Koch, Raphael
name: Zimmermann, Julian
name: Eter, Nicole
name: Brücher, Viktoria Constanze
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2024
Subjects: subject: 610 Medicine and health

description: The Preserflo MicroShunt represents a novel glaucoma treatment device, necessitating long-term follow-up data to accurately assess its efficacy. The aim of this study is to report real-world data of a heterogenous glaucoma cohort who received Preserflo implantation at a specialized glaucoma clinic. A total of 160 eyes of 160 patients who underwent Preserflo MicroShunt implantation were retrospectively enrolled in this study. Patient characteristics, as well as success and failure rates, were assessed. The numbers of adverse events and revision procedures were recorded, along with any reduction in supplementary medication. The progression of intraocular pressure (IOP) was assessed over the course of 12 months, and fluctuations were analyzed. The overall success rate was 61.9% (complete success: 51.3%, qualified success: 10.6%). Revision surgery was performed in 25% of cases. Excessive hypotony occurred postoperatively in 54.4% of patients and regressed after 7 days in 88.8% of all cases. Median IOP decreased from 22 (interquartile range (IQR): 17–27) mmHg preoperatively to 14 (IQR 12–16) mmHg at 12 months postoperatively (p < 0.01). The median number of antiglaucomatous agents decreased from three to zero at latest follow-up. The Preserflo MicroShunt achieved a noticeable reduction in IOP over the course of 12 months in glaucoma patients, irrespective of disease severity or disease subtype. The frequency of postoperative adverse events and number for revision surgeries over the course of the follow-up period were low.
description: Finanziert durch den Open-Access-Publikationsfonds der Universität Münster.
First-principles calculation of intrinsic defect formation volumes in silicon
Creators: name: Centoni, Scott A.
name: Sadigh, Babak
name: Gilmer, George H.
name: Lenosky, Thomas J.
name: de la Rubia, Tomas Diaz
name: Musgrave, Charles B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present an extensive first-principles study of the pressure dependence of the formation enthalpies of all the know vacancy and self-interstitial configurations in silicon, in each charge state from -2 through +2. The neutral vacancy is found to have a formation volume that varies markedly with pressure, leading to a remarkably large negative value (-0.68 atomic volumes) for the zero-pressure formation volume of a Frenkel pair (V + I). The interaction of volume and charge was examined, leading to pressure--Fermi level stability diagrams of the defects. Finally, we quantify the anisotropic nature of the lattice relaxation around the neutral defects.
description: 9 pages, 9 figures
title: East African Journal of Health Sciences, Vol. 1 No. 2 (2019): East African Journal of Health Sciences
title: East African Journal of Health Sciences
titleType: AlternativeTitle
Creators: name: East African Journal Of Health Sciences
Publisher: name: East African Journal of Health Sciences
Year: 2019

description: East African Journal of Health Sciences an open access biannual peer reviewed journal interested in original research in the areas of health. The journal welcomes submissions of original research papers, systematic reviews that provide original information on health issues, case series, case reports and letters to the editor (correspondence) usually commenting on a recent publication in the journal. The journal also publishes special issues which bring together collections of papers on a particular theme usually edited by a guest editor and subject to customary reviewing process.
description: Spontaneous Heterotopic Pregnancy (Case report)...181-183
A Vulvar Calculi: a rare complication of female genital mutilation (Case report)...175-180
Multiple foreign body swallow by a psychiatric patient presenting as upper gastrointestinal bleeding (Case report)...168-174
Postgraduate Trainees’ perception of the clinical learning environment at an Ethiopian Medical School: a cross sectional survey...159-167
Patterns and Factors Associated with Cardiovascular Disorders at Ayder Comprehensive Specialized Hospital, Tigrai, Northern Ethiopia
Prevalence and risk factors for unwanted pregnancy in Tigrai, Ethiopia...137-147
Referral practices on community based management of sick young infants with Possible Serious Bacterial Infection in Tigrai, Ethiopia: the caregivers’ perspectives
Prevalence and factors associated with post-traumatic stress disorder among military personnel admitted to Armed Forces Referral and Teaching Hospital, Addis Ababa, Ethiopia: Cross-sectional study...115-126
Dignified Health Care to Pregnant Mothers...100-101
Effect of Sub Acute Administration of Hydromethanolic Leaf Extract of Ocimum Lamiifolium on the Histological Framework of the Liver and Kidney of Swiss Albino Mice: Effect of Ocimum Lamiifolium Leaf Extract on the Histological framework of the Liver and Kidney...102-114
The Effect of Truck Design on Pavement Performance
Creators: name: Deen, Robert C.
name: Southgate, Herbert F.
name: Mayes, Jesse G.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1980
Subjects: subject: Transportation Engineering

description: When work is done on some materials systems, their internal geometric states are altered in such a way that they have the potential to "give back" work when the force is removed and the system returns to its original configuration. This stored energy is called strain energy. Strain energy density (strain energy per unit volume) is a function of the Young's modulus of elasticity and Poisson's ratio and the nine strain (or stress) components; but it is independent of the coordinate system. Material properties are input into the Chevron N-layer computer program to calculate the strain components.  Having calculated the strain energy density at a point, another quantity called "work strain" can be defined as the value of the strain corresponding to an uniaxial stress situation leading to the same strain energy density at the point. It can be used as the ''effective" strain and is related to any single component of strain. Thus, pavement design systems based upon a single component of strain may be easily converted to a strain energy density basis.  Configurations with loads distributed equally between the axles of an axle group were evaluated and damage factor relationships are reviewed. However, inspections of tandem axle suspensions on semitrailer trucks have shown that most tandem groups do not distribute the load equally to the axles. A theoretical investigation was made using pavement structures identical to those tested at the AASHO Road Test. The 1976 W-6 Table for Kentucky was used to obtain actual weight data. Preliminary analyses of tandem groups for 3S2 vehicles revealed a 40-percent increase in EAL over that calculated EAL assuming the total load on each tandem group had been uniformly distributed to the axles.
Industry Networks and Sustainable Competitive Advantages in Brazilian and U.S. Processed Citrus Supply Chains
Creators: name: Sterns, James A.
name: Spreen, Thomas H.
name: Sterns, James A.
name: Spreen, Thomas H.
Publisher: name: Unknown
Year: 2007
Subjects: Agribusiness
Industrial Organization

description: The states of Sao Paulo, Brazil and Florida, United States collectively dominate the world supply of orange juice. Collectively, these two regions account for over 80 percent of world processed orange production (Spreen, et al). Florida is the prime supplier to the United States and Canada, while Sao Paulo dominates world trade of orange juice and is the primary supplier to the EU market. It is these three markets - the United States, Canada and the EU - that represent the vast majority of global consumption of processed orange products (Spreen). The global dominance by these two national industries is being threatened. Both the Florida and Sao Paulo citrus industries are experiencing outbreaks of the same potentially devastating diseases - citrus canker (Xanthomonas axonopodis pv. citri) and citrus greening (Liberibacter asiaticus). Citrus canker forms lesions on fruit, causing premature fruit drop and rendering the fruit unsuitable for fresh market sales. "In addition to lowering yields, there is likely some increase in tree mortality as canker may open pathways for other diseases ... [though] tree mortality is not the major concern with endemic citrus canker (Spreen, et al., p. 14-5)." On the other hand, citrus greening, as observed in Asia, has had devastating effects on citrus production, leading to very high rates of tree mortality. As greening is quite new to both Sao Paulo and Florida, the actual magnitude of this threat is still unknown, but most industry observers are openly concerned about the potential for significant losses of citrus trees.
Highway Research
Creators: name: Havens, James H.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1980
Subjects: subject: Transportation Engineering

description: The Division of Research is responsible for:      Developing and carrying out a comprehensive research program on all aspects of transportation engineering and operations.     Maintaining lateral communication and coordination with other segments of the Department of Transportation regarding the development and conduct of research studies and special investigations of various operational and engineering problems.     Maintaining relations and cooperating with universities, professional organizations, and other transportation agencies; evaluating and reporting the research experiences of those agencies; and utilizing their findings directly or with further research for the benefit of the Kentucky Department of Transportation.     Maintaining an up-to-date library of research findings on various transportation activities throughout the world.     Reporting and documenting pertinent data and performance of experimental designs and construction features undertaken by other divisions and offices in the Department.
Supersymmetry and the Lorentz Fine Tuning Problem
Creators: name: Jain, Pankaj
name: Ralston, John P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: If physics at the Planck scale requires new conceptions of space-time, then generic renormalizable field theories predict observable violations of Lorentz invariance in the low energy sector. The little recognized ``Lorentz Fine Tuning Problem'' comes from logarithmic loop corrections which are not suppressed to the enormous extent commonly assumed. Fine-tuning of parameters at the Planck scale is one possible but unpalatable solution. Here we show that violation of Lorentz invariance is highly suppressed in a supersymmetric theory, the Wess-Zumino model. We conjecture that supersymmetry may be further motivated by yet another fine tuning problem of ordinary quantum field theories.
description: 9 pages, 1 figure
Dynamic Capabilities in the Food Industry? - On the Applicability of the Evolutionary Orientated Resource Based View of Firm
Creators: name: Voigt, Tim
name: Kuhl, Rainer
name: Voigt, Tim
name: Kuhl, Rainer
Publisher: name: Unknown
Year: 2007
Subjects: Agribusiness
Industrial Organization

description: An important indicator or even the crucial factor of the competitiveness of a company can be seen in its innovative capacity, i.e. the abstract capacity to launch continuous product innovations and to implement the required processes in the internal structure of an organization. This is also true for the food industry as several studies of the broad area of innovations in the food market have shown (Galizzi/Venturini, 1996). From a more macroeconomic perspective, the national innovation systems have been analyzed, as well as general trends in the food sector (Menrad, 2001). In the empirical literature we find several surveys analyzing the influence of the innovative performance of firms in the food industry (Herrmann et al., 1996; McNamara et al., 2003). Most of these contributions concentrate either on statements on the Input-Output Relationship of innovation activities or include analysis within the Structure-Conduct-Performance Paradigm provided by the scholars of the Harvard School. Both aspects are starting points for empirical research as well as in both cases the process-related and dynamic elements of innovation are treated as a black box. The general intention of this paper is to find a more theoretical framework which explains the innovative capacity of firms that are involved in the focused sector. In this regard the concept of Dynamic Capabilities provided by Teece et al. (1997) and Eisenhardt/Martin (2000) are broadly accepted as a useable explanation of firms' innovative capacity. Since these concepts were designed with a particular regard to typical high-tech industries like IT-branch, telecommunication and biotechnology, the question comes up if these approaches do essentially fit to those conditions we can observe on the food market. Thus, the purpose of this paper is twofold: first, we want to introduce and discuss the concepts of dynamic capabilities in the context of firms' innovative capacity and market dynamics. Second, we are going to analyse the explanatory power and finally the applicability of dynamic capabilities to the food industry. We will start with an introduction and critical discussions of the concepts of Dynamic Capabilities (II) that are regarded as the recent extension on RBV. In order to test the applicability of Dynamic Capabilities to the food market, we concentrate the analysis on three main criteria (III) derived from the theoretical background. Based on those, we will finally draw a conclusion (IV) on the applicability of the approach discussed.
Spherical shocks in a steep density gradient of expanding media
Creators: name: Govreen-Segal, Taya
name: Nakar, Ehud
name: Levinson, Amir
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We study the propagation of a Newtonian shock in a spherically symmetric, homologously expanding ejecta. We focus on media with a steep power-law density profile of the form $ρ\propto t^{-3}v^{-α}$, with $α>5$, where $v$ is the velocity of the expanding medium and $t$ is time. Such profiles are expected in the leading edge of supernovae ejecta and sub-relativistic outflows from binary neutron star mergers. We find that such shocks always accelerate in the observer frame and lose causal contact with the bulk of the driver gas, owing to the steep density profile. However, the prolonged shock evolution exhibits two distinct pathways: In one, the shock strength diminishes with time until the shock eventually dies out. In the other, the shock strength steadily increases, and the solution approaches the self-similar solution of a shock is a static medium. By mapping the parameter space of shock solutions, we find that the evolutionary pathways are dictated by $α$ and by the initial ratio between the shock velocity and the local upstream velocity. We find that for $αω_c$ the shock may decay or grow stronger depending on the initial value of the velocity ratio. These two branches bifurcate from a self-similar solution derived analytically for a constant velocity ratio. We analyze properties of the solutions that may have an impact on the observational signatures of such systems, and assess the conditions required for decaying shocks to break out from a finite medium.
Spectroscopic Survey of Red Giants in the SMC. I: Kinematics
Creators: name: Harris, Jason
name: Zaritsky, Dennis
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a spectroscopic survey of 2046 red giant stars, distributed over the central 4x2 kpc of the Small Magellanic Cloud (SMC). After fitting and removing a small velocity gradient across the SMC (7.9 km/s/deg oriented at 10 deg E of N), we measure an rms velocity scatter of 27.5+-0.5 km/s. The line of sight velocity distribution is well-characterized by a Gaussian and the velocity dispersion profile is nearly constant as a function of radius. We find no kinematic evidence of tidal disturbances. Without a high-precision measurement of the SMC's proper motion, it is not possible to constrain the SMC's true rotation speed from our measured radial-velocity gradient. However, even with conservative assumptions, we find that v < sigma and hence that the SMC is primarily supported by its velocity dispersion. We find that the shape of the SMC, as measured from the analysis of the spatial distribution of its red giant stars, is consistent with the degree of rotational flattening expected for the range of allowed v/sigma values. As such, the properties of the SMC are consistent with similar low luminosity spheroidal systems. We conclude that the SMC is primarily a low luminosity spheroid whose irregular visual appearance is dominated by recent star formation. A simple virial analysis using the measured kinematics implies an enclosed mass within 1.6 kpc of between 1.4 and 1.9x10^9 Mo, and a less well constrained mass within 3 kpc of between 2.7 and 5.1x10^9 Mo.
description: 31 pages, 12 Figures. Accepted to AJ. Full ASCII version of Table 2 available at http://marvin.as.arizona.edu/~jharris/SMCGiants
Retail Internationalization and Its Consequences on the Food Chain
Creators: name: Hanf, Jon Henrich
name: Dautzenberg, Kirsti
name: Hanf, Jon Henrich
name: Dautzenberg, Kirsti
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agribusiness
subject: International Relations/Trade
subject: CEEC
subject: consequences
subject: retail internationalization

description: In order to meet with the obstacles of market saturation and the resulting cut-throat competition in the home countries of most of the top food retailers, they use the chance to participate in the increasing standard of living in Asia, South America and Central- and Eastern Europe. Thus, retail internationalization can be regarded as a growth strategy for top food retailers. However, opposite to manufacturers internationalization is for retailers still a new strategy so that globalization continues to accelerate. AT Kearney (2006) shows that since 2001 more than 50 different retailers have entered 90 new markets. In this context our the aim of our paper is threefold. First, using different theories of internationalization we want to work out the courses why the retailers internationalize. Furthermore, by analyzing secondary data we will show the actual degree of internationalization. Second, using theories of the new institutional economics as well as strategic management we will elaborate on its consequences for the participants of the agri-food business. Building on the more general parts of our aim the third part contributes to the developments in Central and Eastern Europe. This includes a detailed analysis of the current situation and an outlook to future developments.
Reduced Ionic Diffusion by the Dynamic Electron-Ion Collisions in Warm Dense Hydrogen
Creators: name: Yao, Yunpeng
name: Zeng, Qiyu
name: Chen, Ke
name: Kang, Dongdong
name: Hou, Yong
name: Ma, Qian
name: Dai, Jiayu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The dynamic electron-ion collisions play an important rolein determining the static and transport properties of warmdense matter (WDM). Electron force field (eFF) method is applied to study the ionic transport properties of warm densehydrogen. Compared with the results from quantum moleculardynamics and orbital-free molecular dynamics, the ionicdiffusions are largely reduced by involving the dynamic collisions of electrons and ions. This physics is verified by quantum Langevin molecular dynamics (QLMD) simulations, which includes electron-ion collisions induced friction(EI-CIF) into the dynamic equation of ions. Based on these new results, we proposed a model including the correctionof collisions induced friction of the ionic diffusion. The CIF model has been verified to be valid at a wide range ofdensity and temperature. We also compare the results with the Yukawa one component plasma (YOCP) model andEffective OCP (EOCP) model. We proposed to calculate the self-diffusion coefficients using the EOCP model modifiedby the CIF model to introduce the dynamic electron-ion collisions effect.
description: accepted by POP
Probabilistic design of support structures for offshore wind turbines by means of non-Gaussian spectral analysis
Creators: name: Kelma, Sebastian
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2024
Subjects: subject: Offshore wind energy
subject: Load simulation
subject: Frequency-domain analysis
subject: Fatigue
subject: Probabilistic design
subject: Offshore-Windenergie
subject: Lastsimulation
subject: Frequenzbereichanalyse
subject: Ermüdung
subject: Probabilistische Strukturauslegung
subject: enthält Forschungsdaten
subject: contains research data
subject: Dewey Decimal Classification::600 | Technik

description: Offshore wind energy is of special importance in order to meet the ambitious goals to produce climate-neutral energy. Therefore, an accelerated installation of offshore wind turbines is required. The design is to be achieved with respect to standards and guidelines. Especially probabilistic design methods allow an accurate and economic structural design. Not only the environmental conditions vary during the lifetime, but the short-term loads are also subject of random scattering. For the design of offshore wind turbines, the required load simulations are usually carried out in time domain. In comparison, it is less time-consuming to obtain loads by means of frequency-domain analysis. This is very beneficial for the probabilistic design which requires significantly more load simulations in time domain. However, non-linearities and time-variant behaviour of offshore wind turbines cannot be represented well during the load simulation in frequency domain. Extreme loads and fatigue loads can be calculated by means of frequency-domain analysis. The determination of the distribution functions of extreme values is well established on a theoretical background. As for the fatigue design, different empirical models exist which describe the distribution function of fatigue loads on the basis of frequency-domain analysis. In this thesis, a new model is introduced which leads to more accurate results. Since frequency-domain analysis is not always suitable, the transformation of signals given in frequency domain is required to generate respective random time series. As for the design of offshore wind turbines, only limited recommendations are stated in standards on how to carry out this transformation. Detailed analysis shows that accurate results with respect to wave-induced loads are also obtained for coarser discretisation of spectra. The resulting loads and their statistical properties are still accurate, while the numerical effort can be reduced in comparison to the stated recommendations. On the basis of theoretical findings, time series from load simulations of offshore wind turbine are analysed regarding their spectral properties. Investigations are carried out to evaluate the agreement between the extreme load and fatigue loads which are either simulated or calculated on the basis of the spectral properties. It is also shown that currents within sea states lead to increased fatigue loads.
The International Quality Systems Environment
Creators: name: Krieger, Stephanie
name: Schiefer, Gerhard
name: Krieger, Stephanie
name: Schiefer, Gerhard
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agribusiness
subject: International Relations/Trade
subject: quality standards
subject: benchmark
subject: harmonisation
subject: advisory model

description: Enterprises in the agri-food sector are increasingly confronted with the need to adjust their production processes and operations to the requirements of quality systems and to integrate these requirements into their own individual integrated process management system. Integra- tion efforts are further aggravated by correlations of quality system requirements with other process related requirements. First initiatives have started to benchmark the requirements of different quality systems to have an analyse about the level of the same requirements. Output of this article will be a description of an advisory model (database model with computerized support), which presents a support tool for the implementation of quality, environ- mental and occupational health systems into the individual integrated (process) management system of enterprises. This tool includes at the moment two main parts: a benchmark of quality standards and a cost and benefit analysis approach.
Universality classes of the Anderson Transitions Driven by non-Hermitian Disorder
Creators: name: Luo, Xunlong
name: Ohtsuki, Tomi
name: Shindou, Ryuichi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: An interplay between non-Hermiticity and disorder plays an important role in condensed matter physics. Here, we report the universal critical behaviors of the Anderson transitions driven by non-Hermitian disorders for three dimensional (3D) Anderson model and 3D U(1) model, which belong to 3D class ${\rm AI}^{\dagger}$ and 3D class A in the classification of non-Hermitian systems, respectively. Based on level statistics and finite-size scaling analysis, the critical exponent for length scale is estimated as $ν=0.99\pm 0.05$ for class ${\rm AI}^{\dagger}$, and $ν=1.09\pm 0.05 $ for class A, both of which are clearly distinct from the critical exponents for 3D orthogonal and 3D unitary classes, respectively. In addition, spectral rigidity, level spacing distribution, and level spacing ratio distribution are studied. These critical behaviors strongly support that the non-Hermiticity changes the universality classes of the Anderson transitions.
description: 4.1 pages (1 table and three figures) with supplemental materials
Barriers and Drivers of Innovation in Traditional Food Networks
Creators: name: Kuhne, Bianka
name: Gellynck, Xavier
name: Vermeire, Bert
name: Molnar, Adrienn
name: Kuhne, Bianka
name: Gellynck, Xavier
name: Vermeire, Bert
name: Molnar, Adrienn
Publisher: name: Unknown
Year: 2007
Subjects: Agribusiness
Research and Development/Tech Change/Emerging Technologies

description: In the European Union the awareness to retain cultural heritage within the different European regions is rising. An important element of the cultural heritage is the production of traditional food products. Few published studies are related to traditional food products and even less to innovation in this specific food sector. Taking into consideration the increasing demand for traditional food products and the importance of innovation to gain competitive advantage, there is a great need to carry out research in this field. In the frame of this research a traditional food network is understood as the network of traditional food firms, research centers and stakeholders of this sector. A traditional food firm (TFF) is comprehended as a manufacturer of traditional food products, with special attention to small and medium sized TFFs. Hereby, a new definition of traditional food products has been developed. This definition states that the key production steps of a traditional food product must be performed in a certain area, which can be national, regional or local. The traditional food product must have an authentic recipe (mix of ingredients), and/or an authentic origin of raw material, and/or an authentic production process. Furthermore, it must be commercially available for the public in stores or restaurants for at least 50 years and it must be part of the gastronomic heritage, which can be described in a one-page story (Gellynck et al., 2006a). In the literature, it is emphasized that a network, rather than a single firm determines the potential for innovation (Pittaway et al., 2004; Powell et al., 1996). Innovation involves changes in an organization (Damanpour, 1991). On the one hand, it is a response to changes of the firm's internal or external environment and a preventive step to anticipate changes in the firm's environment on the other. The implementation of organizational innovation contributes to the performance and effectiveness of TFFs and their networks (Damanpour, 1991; Gellynck et al., 2006c). Therefore, innovation is regarded as an important strategic tool to obtain competitive advantage (Avermaete et al., 2004a; Gellynck et al., 2006b). However, not all TFFs develop and implement organizational innovation through their network. Therefore, the aim of the present paper is to construct a conceptual framework for the investigation of barriers and drivers of organizational innovation developed by TFFs in traditional food networks.
Cavity QED Detection of Interfering Matter Waves
Creators: name: Bourdel, T.
name: Donner, T.
name: Ritter, S.
name: Öttl, A.
name: Köhl, M.
name: Esslinger, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We observe the build-up of a matter wave interference pattern from single atom detection events in a double-slit experiment. The interference arises from two overlapping atom laser beams extracted from a Rubidium Bose-Einstein condensate. Our detector is a high-finesse optical cavity which realizes the quantum measurement of the presence of an atom and thereby projects delocalized atoms into a state with zero or one atom in the resonator. The experiment reveals simultaneously the granular and the wave nature of matter.
description: 4 pages, 4 figures
Interplay of Fractional Chern Insulator and Charge-Density-Wave Phases in Twisted Bilayer Graphene
Creators: name: Wilhelm, Patrick
name: Lang, Thomas C.
name: Läuchli, Andreas M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We perform an extensive exact diagonalization study of interaction driven insulators in spin- and valley-polarized moiré flat bands of twisted bilayer graphene aligned with its hexagonal boron nitride substrate. In addition to previously reported fractional Chern insulator phases, we provide compelling evidence for competing charge-density-wave phases at multiple fractional fillings of a realistic single-band model. A thorough analysis at different interlayer hopping parameters, motivated by experimental variability, and the role of kinetic energy at various Coulomb interaction strengths highlight the competition between these phases. The interplay of the single-particle and the interaction induced hole dispersion with the inherent Berry curvature of the Chern bands is intuitively understood to be the driving mechanism for the ground-state selection. The resulting phase diagram features remarkable agreement with experimental findings in a related moiré heterostructure and affirms the relevance of our results beyond the scope of graphene based materials.
description: 16 pages, 18 figures
Spin-Induced Orbital Frustration in a Hexagonal Optical Lattice
Creators: name: Li, Yongqiang
name: Yuan, Jianmin
name: Zhou, Xiaoji
name: Li, Xiaopeng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Complex lattices provide a versatile ground for fascinating quantum many-body physics. Here, we propose an exotic mechanics for generating orbital frustration in hexagonal lattices. We study two-component (pseudospin-$1/2$) Bose gases in $p$-orbital bands of two-dimensional hexagonal lattices, and find that the system exhibits previously untouched orbital frustration as a result of the interplay of spin and orbital degrees of freedom, in contrast to normal Ising-type orbital ordering of spinless $p$-orbital band bosons in two-dimensional hexagonal lattices. Based on the classification by symmetry analysis, we find the interplay of orbital frustration and strong interaction leads to exotic Mott and superfluid phases with spin-orbital intertwined orders, in spite of the complete absence of spin-orbital interaction in the Hamiltonian. Our study implies many-body correlations in a multi-orbital setting could induce rich spin-orbital intertwined physics in complex lattice structures.
description: 6 pages, 4 figures, with supplementary materials
Non-dispersive Fermi arcs and absence of charge ordering in the pseudogap phase of Bi2Sr2CaCu2O8+d
Creators: name: Chatterjee, U.
name: Shi, M.
name: Kaminski, A.
name: Kanigel, A.
name: Fretwell, H. M.
name: Terashima, K.
name: Takahashi, T.
name: Rosenkranz, S.
name: Li, Z. Z.
name: Raffy, H.
name: Santander-Syro, A.
name: Kadowaki, K.
name: Norman, M. R.
name: Randeria, M.
name: Campuzano, J. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The autocorrelation of angle resolved photoemission data from the high temperature superconductor Bi2Sr2CaCu2O8+d shows distinct peaks in momentum space which disperse with binding energy in the superconducting state, but not in the pseudogap phase. Although it is tempting to attribute a non-dispersive behavior in momentum space to some ordering phenomenon, a de-construction of the autocorrelation reveals that the non-dispersive peaks arise not from ordering, but rather from the tips of the Fermi arcs, which themselves do not change with binding energy.
description: 4 pages, 3 figures
Intelligent Reflecting Surface Enhanced Indoor Robot Path Planning: A Radio Map based Approach
Creators: name: Mu, Xidong
name: Liu, Yuanwei
name: Guo, Li
name: Lin, Jiaru
name: Schober, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, an indoor robot navigation system is investigated, where an intelligent reflecting surface (IRS) is employed to enhance the connectivity between the access point (AP) and robotic users. Both single-user and multiple-user scenarios are considered. In the single-user scenario, one mobile robotic user (MRU) communicates with the AP. In the multiple-user scenario, the AP serves one MRU and one static robotic user (SRU) employing either non-orthogonal multiple access (NOMA) or orthogonal multiple access (OMA) transmission. The considered system is optimized for minimization of the travelling time/distance of the MRU from a given starting point to a predefined final location, while satisfying constraints on the communication quality of the robotic users. To this end, a radio map based approach is proposed to exploit location-dependent channel propagation knowledge. For the single-user scenario, a channel power gain map is constructed, which characterizes the spatial distribution of the maximum expected effective channel power gain of the MRU for the optimal IRS phase shifts. Based on the obtained channel power gain map, the communication-aware robot path planing problem is solved by exploiting graph theory. For the multiple-user scenario, a communication rate map is constructed, which characterizes the spatial distribution of the maximum expected rate of the MRU for the optimal power allocation at the AP and the optimal IRS phase shifts subject to a minimum rate requirement for the SRU. The joint optimization problem is efficiently solved by invoking bisection search and successive convex approximation methods. Then, a graph theory based solution for the robot path planning problem is derived by exploiting the obtained communication rate map. Our numerical results verify the effectiveness of the proposed designs.
description: 32 pages,13 figures. a conference version can be found in arXiv:2009.11519