cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Kernel-phase analysis: aperture modeling prescriptions that minimize calibration errors
Creators: name: Martinache, Frantz
name: Ceau, Alban
name: Laugier, Romain
name: Kammerer, Jens
name: N'Diaye, Mamadou
name: Mary, David
name: Cvetojevic, Nick
name: Lopez, Coline
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Kernel-phase is a data analysis method based on a generalization of the notion of closure-phase invented in the context of interferometry, but that applies to well corrected diffraction dominated images produced by an arbitrary aperture. The linear model upon which it relies theoretically leads to the formation of observable quantities robust against residual aberrations. In practice, detection limits reported thus far seem to be dominated by systematic errors induced by calibration biases not sufficiently filtered out by the kernel projection operator. This paper focuses on the impact the initial modeling of the aperture has on these errors and introduces a strategy to mitigate them, using a more accurate aperture transmission model. The paper first uses idealized monochromatic simulations of a non trivial aperture to illustrate the impact modeling choices have on calibration errors. It then applies the outlined prescription to two distinct data-sets of images whose analysis has previously been published. The use of a transmission model to describe the aperture results in a significant improvement over the previous type of analysis. The thus reprocessed data-sets generally lead to more accurate results, less affected by systematic errors. As kernel-phase observing programs are becoming more ambitious, accuracy in the aperture description is becoming paramount to avoid situations where contrast detection limits are dominated by systematic errors. Prescriptions outlined in this paper will benefit any attempt at exploiting kernel-phase for high-contrast detection.
description: 12 pages, 15 figures, accepted for publication by Astronomy & Astrophysics
Mechanics and dynamics of the tool holder-spindle interface
Creators: name: Namazi, Mehdi
Publisher: name: University of British Columbia
Year: 2010

description: This thesis presents a general method for identifying and modeling the tool holderspindle interface in machine tools, using an experimental technique and the finite element method. The spindle assembly is one of the weakest parts in the machine tool and contributes to the chatter vibrations. The unwanted vibrations lead to a poor surface finish and can damage the tool, tool holder and spindle bearings. The tool holder-spindle interface is the connection closest to the cutting, and its dynamics can affect the stability of the cutting process and the dimensional accuracy of the work-piece. In this thesis, Timoshenko beam elements are used to model the tool holder, and an experimental setup is used to identify the contact stiffness of the interface for CAT and the HSK tapers. The finite-element models of the tool holder and the spindle are coupled through a receptance coupling model. The effect of the drawbar force is investigated as the main factor affecting the dynamics of the interface. It is shown that with an increase in the drawbar force, the dynamic stiffness of the connection between the holder and spindle taper decreases and saturates after a certain force level. The dynamics of various tool holder types is also investigated in the setup as a guideline to select tool holders for lowspeed and high-speed milling operations. This thesis also presents the coupling of tool holder dynamics identified through the finite element method with the experimentally identified spindle. The structural dynamics of the spindle with a tool-holder taper is identified experimentally through an inverse receptance coupling technique. The tool holder stick-out and tool are assumed to be a lightly damped linear structure, and its analytically predicted dynamics is coupled to the spindle with the aid of a receptance coupling method. This approach greatly reduces the number of impact modal tests needed to identify the dynamics of the machine at the tool tip after each tool change. The dynamics of the machine tool and the properties of the work-piece material are used to calculate chatter stability lobes. The proposed method is applied on a horizontal machining center and verified experimentally.
Mathematical aspects of mean field spin glass theory
Creators: name: Guerra, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A comprehensive review will be given about the rich mathematical structure of mean field spin glass theory, mostly developed, until now, in the frame of the methods of theoretical physics, based on deep physical intuition and hints coming from numerical simulation. Central to our treatment is a very simple and yet powerful interpolation method, allowing to compare different probabilistic schemes, by using convexity and positivity arguments. In this way we can prove the existence of the thermodynamic limit for the free energy density of the system, a long standing open problem. Moreover, in the frame of a generalized variational principle, we can show the emergency of the Derrida-Ruelle random probability cascades, leading to the form of free energy given by the celebrated Parisi \textit {Ansatz}. All these results seem to be in full agreement with the mechanism of spontaneous replica symmetry breaking as developed by Giorgio Parisi.
description: proceedings of the "4th European Congress of Mathematics", Stockholm, 2004. 17 pages
When is the average number of saddle points typical?
Creators: name: Kent-Dobias, Jaron
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A common measure of a function's complexity is the count of its stationary points. For complicated functions, this count grows exponentially with the volume and dimension of their domain. In practice, the count is averaged over a class of functions (the annealed average), but the large numbers involved can produce averages biased by extremely rare samples. Typical counts are reliably found by taking the average of the logarithm (the quenched average), which is more difficult and not often done in practice. When most stationary points are uncorrelated with each other, quenched and anneals averages are equal. Equilibrium heuristics can guarantee when most of the lowest minima will be uncorrelated. We show that these equilibrium heuristics cannot be used to draw conclusions about other minima and saddles by producing examples among Gaussian-correlated functions on the hypersphere where the count of certain saddles and minima has different quenched and annealed averages, despite being guaranteed `safe' in the equilibrium setting. We determine conditions for the emergence of nontrivial correlations between saddles, and discuss the implications for the geometry of those functions and what out-of-equilibrium settings might be affected.
Zrównoważenie produkcji rolniczej w wybranych gospodarstwach województwa małopolskiego
Creators: name: Kania, Józef
name: Kapłon, Agnieszka
name: Kania, Józef
name: Kapłon, Agnieszka
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: sustainability of production
subject: type of farming

description: The paper presents an analysis of the production sustainability in selected 107 agricultural holdings of Malopolska Provence with following general types of farming: mixed cropping, mixed livestock and mixed crops-livestock. In production sustainability were included different indicators of environmental, economic and social sustainability. Research results shows that top sustainable production of ecologically led holdings with mixed livestock, but economic criteria were reached in the greatest percentage by holdings with mixed cropping. The proposed social sustainability criterion in surveyed holdings was not a barrier to sustainable production.
Many-body localization in one dimensional optical lattice with speckle disorder
Creators: name: Maksymov, Artur
name: Sierant, Piotr
name: Zakrzewski, Jakub
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The many-body localization transition for Heisenberg spin chain with a speckle disorder is studied. Such a model is equivalent to a system of spinless fermions in an optical lattice with an additional speckle field. Our numerical results show that the many-body localization transition in speckle disorder falls within the same universality class as the transition in an uncorrelated random disorder, in contrast to the quasiperiodic potential typically studied in experiments. This hints at possibilities of experimental studies of the role of rare Griffiths regions and of the interplay of ergodic and localized grains at the many-body localization transition. Moreover, the speckle potential allows one to study the role of correlations in disorder on the transition. We study both spectral and dynamical properties of the system focusing on observables that are sensitive to the disorder type and its correlations. In particular, distributions of local imbalance at long times provide an experimentally available tool that reveals the presence of small ergodic grains even deep in the many-body localized phase in a correlated speckle disorder.
description: version close to accepted in Phys. Rev. B
Understanding the Structure and Conformation of Bovine Hemoglobin in presence of the Drug Hydroxyurea: Multi-spectroscopic studies supported by Docking and Molecular Dynamics Simulation
Creators: name: Saumen Saha
name: Joydeep Chowdhury
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Computational Biology

description: Binding interaction between the small antitumor drug Hydroxyurea (HU) and Bovine Hemoglobin (BHb) has been explored in details from multi-spectroscopic and computational studies. The formation of ground state complex between BHb and HU has been suggested from the electronic UV–Vis and steady-state fluorescence spectroscopic studies. The quenching in fluorescence of BHb in presence of HU at varied concentrations has been analyzed from the SV plots. Static type of quenching has been suggested from time-resolved fluorescence spectroscopic studies. Binding parameters associated with the BHb-HU complex have also been estimated from the temperature dependent fluorescence spectroscopic studies. Alterations in the micro-environment of the Tyr and Trp residues of BHb in presence of HU have been observed from the synchronous fluorescence measurement. The result obtained from CD spectroscopic measurements signify partial unfolding in the secondary structure of BHb due to binding with HU molecule. The experimental observations are supported by theoretical studies. Molecular docking and molecular dynamics simulations have been performed to investigate the structural stability and compactness of BHb in the binding interaction between BHb and HU. The interaction of BHb with HU is expected to provide fundamental insights towards understanding the therapeutic effectiveness of HU upon interaction with BHb used in chemo-, radio therpeutic procedures and also in the treatment of SCD.
An alternative view: satisfaction of the four variable Belli inequality using quantum correlations
Creators: name: Sica, L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The algebraic derivation of the numerical limits of Bell inequalities in either three or four random variables is independent of the assumption of randomness.The limits of the inequalities follow as mathematical consequences of their created algebraic structures independently of application to random or deterministic variables.The inequalities should be called identity inequalities.A final correlation reuses data from the previous correlations and thus leads to the inequality limits.It generally has a different functional form from the previous correlations, whether derived as a counterfactual mathematical result, or in a way enabling comparison with experiment.These algebraic facts and their consequences are central to understanding the inequalities use, but have not been widely recognized.Logically consistent application of the inequalities to Bell experiments is challenging, given that the number of mathematically assumed random variables is greater than the number of physical variables produced per experimental realization.Given Bells rejection of the use of sequential, alternative paths, three experimental runs are here considered to enable acquisition of data to be rearranged for computation of statistical crosscorrelations.Predicted quantum mechanical correlations then satisfy the inequality.Since mathematically inconsistent use is sufficient to cause inequality violation, the conclusion that violation implies the nonexistence of underlying variables in the entanglement process does not follow.
description: 9 pages,1 figure.The article has now been published but under a different title than that used previously in the archive. Explanatory material has been added to the abstract, to Sec. 3.1, to Sec. 5. and to the appendix
Master-slave synchronization of Bose-Einstein condensate in 1D tilted bichromatical optical lattice
Creators: name: Tosyali, E.
name: Aydogmus, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: This paper investigates the synchronization of chaotic behavior in a model of Bose-Einstein condensate (BEC) held in a 1D tilted bichromatical optical lattice potential by using the active control technique. The synchronization is presented in the master-slave configuration which implies that the master system evolves freely and drives the dynamics of the slave system. Also the numerical simulations are given to indicate the practicability and the effectiveness of the used controllers.
description: 10 pages, 6 figures
Additional file 1 of Association of COVID-19 with acute and post-acute risk of multiple different complications and mortality in patients infected with omicron variant stratified by initial disease severity: a cohort study in Hong Kong
Creators: name: Wan, Eric Yuk Fai
name: Zhang, Ran
name: Mathur, Sukriti
name: Yan, Vincent Ka Chun
name: Lai, Francisco Tsz Tsun
name: Chui, Celine Sze Ling
name: Li, Xue
name: Wong, Carlos King Ho
name: Chan, Esther Wai Yin
name: Lau, Chak Sing
name: Wong, Ian Chi Kei
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: Supplementary Material 1.
Czynniki kształtujące rentowność przedsiębiorstw przemysłu mięsnego
Creators: name: Kobiałka, Anna
name: Kobiałka, Anna
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: profitability
subject: revenues
subject: expenses
subject: net profit
subject: equity
subject: assets

description: The aim of this study was to assess the significance of the various factors influencing the profitability of the four companies in the meat industry in 2008-2012. An evaluation of the factors influencing the level of profitability, ie revenues, expenses, earnings and assets as well as equity. Basing on these categories there were determined the profitability ratios of net sales, assets and equity. The relationships among the various components of the basic output categories and value of assets and equity determine the profitability level of each business unit. Efficiency of each surveyed companies was different, but the general trend was low and decreasing the profitability ratios. The main reasons of changes regarding the level of return to equity were changes in the level of sales profitability.
Stein compacts in Levi-flat hypersurfaces
Creators: name: Forstneric, Franc
name: Laurent-Thiebaut, Christine
Publisher: name: arXiv
Year: 2004
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: Primary Primary 32E30, 32T20, 32T27, 32U05, 32V05, 32V25, 32W05; secondary 57R30

description: We explore connections between geometric properties of the Levi foliation of a Levi-flat hypersurface M and holomorphic convexity of compact sets in M, or bounded in part by M. Applications include extendability of Cauchy-Riemann functions, solvability of the dibar_b-equation, approximability of holomorphic and CR functions, and global regularity of the dibar-Neumann operator.
description: Final version, Trans. Amer. Math. Soc
Non-equilibrium atmospheric-pressure plasma torch sustained in a quasi-optical beam of subterahertz radiation
Creators: name: Sintsov, S. V.
name: Vodopyanov, A. V.
name: Viktorov, M. E.
name: Morozkin, M. V.
name: Glyavin, M. Yu.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: This paper studies a continuous atmospheric-pressure discharge maintained by focused subterahertz radiation of a 263 GHz gyrotron. A plasma torch propagating towards microwave radiation was sustained on an argon flow exiting a metal gas tube in the surrounding atmosphere of air. Using a high-speed camera, the spatial structure of the torch was studied and the temporal dynamics on timescales of the order of 20 ns was examined. The emission spectra of the optical wavelength range were used to estimate the excitation temperature of argon atoms and electron density. It was shown that a discharge of this type is substantially non-equilibrium and the electron temperature is many times higher than the vibrational and gas temperatures, being 1.5-1.7 eV in order of magnitude. The electron density measured by the Stark broadening hydrogen lines exceeds a critical value for the frequency of the heating field.
Homotopy continuation methods for coupled-cluster theory in quantum chemistry
Creators: name: Faulstich, Fabian M.
name: Laestadius, Andre
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Algebraic Geometry (math.AG)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Homotopy methods have proven to be a powerful tool for understanding the multitude of solutions provided by the coupled-cluster polynomial equations. This endeavor has been pioneered by quantum chemists that have undertaken both elaborate numerical as well as mathematical investigations. Recently, from the perspective of applied mathematics, new interest in these approaches has emerged using both topological degree theory and algebraically oriented tools. This article provides an overview of describing the latter development.
Bezpieczeństwo i jakość polsk iej żywności
Creators: name: Kowalczyk, Stanisław
name: Kowalczyk, Stanisław
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: food safety
subject: food quality
subject: food fraud
subject: globalization
subject: food law

description: The article discusses the issue of food safety and food quality. Starting from the Food Risk Matrix analyzed issues such as the location of food safety and quality in the risk matrix concept, the state of food quality on the Polish market in the years 2005-2013 and the actions taken at the EU aimed to build on the anti-adulteration and food fraud system.
Colchicine has Antidiabetic Effect and May be an Option for Type 2 Diabetes Management
Creators: name: Younis, Mahmoud
Publisher: name: figshare
Year: 2020
Subjects: Health Care

description: Objectives: The aim of this study is to show that if oral colchicine by a dose of 0.5 mg twice daily has an anti-diabetic effect in comparison to metformin and control. Design: A randomized, controlled trial, 6-month trial Materials and Methods:150 newly diagnosed type 2 diabetes patients were randomized into 3 parallel groups, had been monitored in a private clinic, each group 50 patients number, with 30 females and 20 males after written consent from all patients. The ages of all patients were between 35 and 55 years. Results: The results show that both colchicine and metformin have a lowering effect on A1C with a statistically significant p-value of less than 0.0001. Conclusion: Colchicine may be considered as an option for type 2 diabetes management.
Neural Architectures for Robot Intelligence
Creators: name: Ritter, H.
name: Steil, J. J.
name: Noelker, C.
name: Roethling, F.
name: McGuire, P. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences
subject: I.2.9; I.2.10; I.2.6; H.1.2; H.2.8; I.5.4

description: We argue that the direct experimental approaches to elucidate the architecture of higher brains may benefit from insights gained from exploring the possibilities and limits of artificial control architectures for robot systems. We present some of our recent work that has been motivated by that view and that is centered around the study of various aspects of hand actions since these are intimately linked with many higher cognitive abilities. As examples, we report on the development of a modular system for the recognition of continuous hand postures based on neural nets, the use of vision and tactile sensing for guiding prehensile movements of a multifingered hand, and the recognition and use of hand gestures for robot teaching. Regarding the issue of learning, we propose to view real-world learning from the perspective of data mining and to focus more strongly on the imitation of observed actions instead of purely reinforcement-based exploration. As a concrete example of such an effort we report on the status of an ongoing project in our lab in which a robot equipped with an attention system with a neurally inspired architecture is taught actions by using hand gestures in conjunction with speech commands. We point out some of the lessons learnt from this system, and discuss how systems of this kind can contribute to the study of issues at the junction between natural and artificial cognitive systems.
description: 37 pages, 17 figures
Instytucjonalny wymi ar bezpieczeństwa żywności w Polsce
Creators: name: Kozłowska-Burdziak, Mirosława
name: Kozłowska-Burdziak, Mirosława
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: food safety
subject: State Sanitary Inspection
subject: Veterinary Inspection
subject: Agricultural and Food Quality Inspection

description: One of the main objectives of any state’s policy on food is to ensure that it is safe. Due to the gravity of this goal, governments try to regulate any food oriented matters by creating a system of institutions. These include provisions of law as well as the institutions created to execute those regulations. In Poland, the implementation of the provisions of the Act of Food and Nutrition Safety is mainly the responsibility of the State Sanitary Inspection and Veterinary Inspection. Also, the Agricultural and Food Quality Inspection plays an important part in ensuring the safety of food products. The article aims to determine the changes in the quality of food based on data from the above mentioned institutions after 2000. The conducted analysis proves that the quality of food products in Poland is diverse and shows no stable tendency of improvement. This means that it is necessary to constantly control the process of production and distribution of food.
Effect of parabolization on viscous resistance of displacement vessels
Creators: name: Klaptocz, Voytek R.
Publisher: name: University of British Columbia
Year: 2010

description: The addition of parabolic side bulbs at the ship's mid body is aimed at reducing wavemaking resistance. This concept was first successfully tested on a coaster tanker and then extended to the UBC Series Model 3, a typical Canadian West Coast fishing vessel. A series of systematic tow tank experiments revealed that while parabolization decreases the total resistance (due to a drop in wave-making resistance) the form factor suffers an increase. This thesis focuses on numerical predictions of the influence of side bulbs on the viscous resistance characteristics of a displacement vessel. An integral boundary method solver and a 2D RANS solver were chosen as tools to predict the effect of parabolization on viscous drag for the UBC Series Model 3 hulls and the UBC Series Model 4. The concept of parabolization was then extended to an NPL Trimaran hull. A 3D RANS code was used to compare the calculated values of skin friction and boundary layer thickness to those calculated by the integral boundary layer solver. The RANS code was also used to numerically predict the effect of parabolization on viscous pressure drag for the NPL hull. In total, three different bulbs were studied numerically in addition to the parent NPL hull. The numerical results were compared to experimental data obtained from calm water resistance predictions obtained from tow tank testing. Further effort to decrease the impact of parabolization on form factor was made by applying moving surface boundary layer control to the UBC Series Model 4.
Additional file 7 of Usability and feasibility of an online intervention for older adults to support changes to routines and the home ('Light, activity and sleep in my daily life')
Creators: name: Gerhardsson, Kiran M.
name: Hassan, Mariam
name: Tornberg, Åsa B.
name: Schmidt, Steven M.
Publisher: name: figshare
Year: 2024
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Supplementary Materials 7. Accelerometry results
Proxima Centauri b: A Strong Case for including Cosmic-Ray-induced Chemistry in Atmospheric Biosignature Studies
Creators: name: Scheucher, M.
name: Herbst, K.
name: Schmidt, V.
name: Grenfell, J. L.
name: Schreier, F.
name: Banjac, S.
name: Heber, B.
name: Rauer, H.
name: Sinnhuber, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Due to its Earth-like minimum mass of 1.27 M$_{\text{E}}$ and its close proximity to our Solar system, Proxima Centauri b is one of the most interesting exoplanets for habitability studies. Its host star, Proxima Centauri, is however a strongly flaring star, which is expected to provide a very hostile environment for potentially habitable planets. We perform a habitability study of Proxima Centauri b assuming an Earth-like atmosphere under high stellar particle bombardment, with a focus on spectral transmission features. We employ our extensive model suite calculating energy spectra of stellar particles, their journey through the planetary magnetosphere, ionosphere, and atmosphere, ultimately providing planetary climate and spectral characteristics, as outlined in Herbst et al. (2019). Our results suggest that together with the incident stellar energy flux, high particle influxes can lead to efficient heating of the planet well into temperate climates, by limiting CH$_4$ amounts, which would otherwise run into anti-greenhouse for such planets around M-stars. We identify some key spectral features relevant for future spectral observations: First, NO$_2$ becomes the major absorber in the visible, which greatly impacts the Rayleigh slope. Second, H$_2$O features can be masked by CH$_4$ (near infra-red) and CO$_2$ (mid to far infra-red), making them non-detectable in transmission. Third, O$_3$ is destroyed and instead HNO$_3$ features become clearly visible in the mid to far infra-red. Lastly, assuming a few percent of CO$_2$ in the atmosphere, CO$_2$ absorption at 5.3 $μ$m becomes significant (for flare and non-flare cases), strongly overlapping with a flare related NO feature in Earth's atmosphere.
description: 10 pages, 5 figures. Accepted for publication in ApJ
Applicability of shape parameterizations for giant dipole resonance in warm and rapidly rotating nuclei
Creators: name: Arumugam, P.
name: Deb, A. Ganga
name: Patra, S. K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate how well the shape parameterizations are applicable for studying the giant dipole resonance (GDR) in nuclei, in the low temperature and/or high spin regime. The shape fluctuations due to thermal effects in the GDR observables are calculated using the actual free energies evaluated at fixed spin and temperature. The results obtained are compared with Landau theory calculations done by parameterizing the free energy. We exemplify that the Landau theory could be inadequate where shell effects are dominating. This discrepancy at low temperatures and high spins are well reflected in GDR observables and hence insists on exact calculations in such cases.
description: 10 pages, 2 figures
Additional file 3 of Effect of serum 25-hydroxyvitamin D level on quadriceps strength: a systematic review and meta-analysis
Creators: name: Ong, Michael Tim-yun
name: Tsang, Kitson Chun-Kit
name: Lu, Victor Yan Zhe
name: Yam, Stacy Lok Sze
name: Shen, Wei
name: Man, Gene Chi-Wai
name: Yung, Patrick Shu-hang
Publisher: name: figshare
Year: 2024
Subjects: Medicine
Cell Biology
Biological Sciences not elsewhere classified
Science Policy

description: Supplementary Material 3.
Zróżnicowanie przestrzenne rozwoju społecznogospodarczego powiatów województw podkarpackiego i małopolskiego o dużym rozdrobnieniu agrarnym
Creators: name: Kramarz, Paulina
name: Kramarz, Paulina
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: socio-economic development
subject: agrarian structure

description: The aim of research was to assess spatial diversity of social and economic development of the districts of Lesser Poland and Subcarpathian Voivodeship, characterized by the highest land fragmentation in Poland. The studies showed that barriers of social and economic development of the examined Voivodeships are mainly condition of local economy and quality of life of the local communities. Structure of spatial diversity of social and economic development can suggest the existence of impact of natural conditions on the directions of development of area of research.
Optical properties and single-electron states of the nanosystem that contains three quantum dots
Creators: name: Bilynskyi, I. V.
name: Hols'kyi, V. B.
name: Leshko, R. Ya.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The quantum molecule consisting of three quantum dots that forms a triangle with its centers is studied. The electron wave function in the nanosystem is written using the linear combination of orbital quantum wells. The dispersion equation for numerical calculations of the electron stationary states in a quantum molecule is found. A numerical calculation of the electron energy spectrum in the molecule formed by three quantum dots of a spherical shape is carried out. The influence of the nanocrystal size, the distance between them and the symmetry of the quantum molecule on the electron energy spectrum is studied. The cases of symmetry of an equilateral and an isosceles triangle are considered.
description: 9 pages, 7 figures
Szanse i bariery rozwoju przedsiębiorczości w zakresie świadczenia usług turystycznych na obszarach wiejskich Dolnego Śląska
Creators: name: Kurtyka-Marcak, Izabela
name: Kropsz-Wydra, Irena
name: Kurtyka-Marcak, Izabela
name: Kropsz-Wydra, Irena
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: entrepreneurship
subject: tourism
subject: opportunities and barriers

description: The aim of the study was to demonstrate the opportunities and barriers to the development of entrepreneurship in the provision of tourist services in rural areas of Lower Silesia. The research was conducted in the poviat Kłodzki and Milicz of accommodation provider. Based on the research it can be concluded that the development of tourist service providers in rural areas effectively reduces the financial barrier, and often lack of resorting to foreign capital. This has its impact on the quality of our products, the system of promotion and distribution. Determinants of the development of agritourism farms are: greater availability of credit and funds of the European Union, the activities of local authorities for the promotion and development of infrastructure, transparent regulatory framework to facilitate the operation of such facilities, cooperation with tour operators tourist information points.
DAugNet: Unsupervised, Multi-source, Multi-target, and Life-long Domain Adaptation for Semantic Segmentation of Satellite Images
Creators: name: Tasar, Onur
name: Giros, Alain
name: Tarabalka, Yuliya
name: Alliez, Pierre
name: Clerc, Sébastien
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The domain adaptation of satellite images has recently gained an increasing attention to overcome the limited generalization abilities of machine learning models when segmenting large-scale satellite images. Most of the existing approaches seek for adapting the model from one domain to another. However, such single-source and single-target setting prevents the methods from being scalable solutions, since nowadays multiple source and target domains having different data distributions are usually available. Besides, the continuous proliferation of satellite images necessitates the classifiers to adapt to continuously increasing data. We propose a novel approach, coined DAugNet, for unsupervised, multi-source, multi-target, and life-long domain adaptation of satellite images. It consists of a classifier and a data augmentor. The data augmentor, which is a shallow network, is able to perform style transfer between multiple satellite images in an unsupervised manner, even when new data are added over the time. In each training iteration, it provides the classifier with diversified data, which makes the classifier robust to large data distribution difference between the domains. Our extensive experiments prove that DAugNet significantly better generalizes to new geographic locations than the existing approaches.
title: Goldener Verschnitt : oder, die Umsetzung und Analyse einer Baumhauskonstruktion
Creators: name: Nocker, Julian
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Holzkonstruktion
subject: Baumhaus
subject: Teehaus
subject: design-build
subject: trial and error
subject: Handwerk
subject: Baumhaushotel
subject: Holz
subject: wood-construction
subject: tree-house
subject: tea-house
subject: design-build
subject: trial and error
subject: handcraft
subject: tree-house-hotel
subject: wood

description: Dieses Projekt ist das Ergebnis einer vierjährigen Auseinandersetzung mit Handwerk, Konstruktion, Material und Raum. Ausgangspunkt war der Studioentwurf einer baumähnlichen Struktur für eine Schulerweiterung in Wien. Aus der Motivation, diese Konstruktion tatsächlich umzusetzen und zu überprüfen, begann ich im Sommer 2013 einen Ausschnitt davon im 1:1 Maßstab neben dem Haus meiner Eltern in Salzburg zu bauen. Dabei ging ich auf eine Weise vor, die mir vertraut und natürlich erschien. Die Freiheit nicht wissen zu müssen, wie das Endergebnis sein wird, Entscheidungen im Bauprozess zu treffen, Fehler zuzulassen und daraus zu lernen, ließen die Grenzen zwischen Bauen und Planen verschwimmen. Im Vergleich mit ähnlichen Typologien und Prozessen wurde eine Einordnung der Struktur vorgenommen. So konnten Qualitäten und Potentiale des Baumhauses abgleitet werden. Eine touristische Nutzung meines Projektes stellt eine naheliegende Möglichkeit der Weiternutzung dar und wurde durch eine Überarbeitung der Struktur, Ergänzung eines Sanitärhauses und einer Verortung bzw. Vermietung des Projektes überprüft.
description: This project is the result of a four-year-long dealing with handcraft, construction, different materials and space. The studio draft of a treelike structure meant for the extention of a school building in Vienna consituted the primal starting point. Motivated by the idea of actually implementing and thereby verifying this contruction, I started to build a section of it on a scale of 1:1 in the immediate vicinity of my parental home in Salzburg. In this process I acted in a way that seemed familiar and natural to me. The liberty of not having to know the exact outcome, of still making decisions during the building process, of allowing mistakes to occur and learning from them considerably blurred the usual separation of planning and building for me. By comparing the developing structure with similar typologies and processes a classification was made. Qualities and potentials of a tree house could be derived. Using my project for a touristic purpose presented an obvious possibility of a further use and was verified by revising the structure, adding sanitary facilities, locating and renting out the project.
Topological zero modes and edge symmetries of metastable Markovian bosonic systems
Creators: name: Flynn, Vincent P.
name: Cobanera, Emilio
name: Viola, Lorenza
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Tight bosonic analogs of free-fermionic symmetry-protected topological phases, and their associated edge-localized excitations, have long evaded the grasp of condensed-matter and AMO physics. In this work, building on our initial exploration [PRL 127, 245701 (2021)], we identify a broad class of quadratic bosonic systems subject to Markovian dissipation that realize tight bosonic analogs of the Majorana and Dirac edge modes characteristic of topological superconductors and insulators, respectively. To this end, we establish a general framework for topological metastability for these systems, by leveraging pseudospectral theory as the appropriate mathematical tool for capturing the non-normality of the Lindbladian generator. The resulting dynamical paradigm, which is characterized by both a sharp separation between transient and asymptotic dynamics and a nontrivial topological invariant, is shown to host edge-localized modes, which we dub Majorana and Dirac bosons. Generically, these consist of one conserved mode and a canonically conjugate generator of an approximate symmetry of the dynamics. The general theory is exemplified through several models exhibiting a range of exotic boundary physics that topologically metastable systems can engender. In particular, we explore the extent to which Noether's theorem is violated in this dissipative setting and the interplay between symmetries and these edge modes. We also demonstrate the possibility of anomalous parity dynamics for a bosonic cat state prepared in a topologically metastable system. Observable multitime signatures in the form of anomalously long-lived quantum correlations and divergent zero-frequency power spectral peaks are proposed and discussed in detail. Our results point to a new paradigm of genuine symmetry-protected topological physics in free bosons, embedded deeply in the long-lived transient regimes of metastable dynamics.
description: 37 pages, 10 figures
Combined constraints on Cardassian models from supernovae, CMB and large-scale structure observations
Creators: name: Amarzguioui, Morad
name: Elgaroy, Oystein
name: Multamaki, Tuomas
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We confront Cardassian models with recent observational data. These models can be viewed either as purely phenomenological modifications of the Friedmann equation, or as arising from cosmic fluids with non-standard properties. In the first case, we find that the models are consistent with the data for a wide range of parameters but no significant preference over the Lambda-CDM model is found. In the latter case we find that the fact that the sound speed is non-zero in these models makes them inconsistent with the galaxy power spectrum from the Sloan Digital Sky Survey.
description: 15 pages, 11 figures, accepted for publication in JCAP. Minor changes to text and references
Characterising the Gaia Radial Velocity sample selection function in its native photometry
Creators: name: Rybizki, Jan
name: Rix, Hans-Walter
name: Demleitner, Markus
name: Bailer-Jones, Coryn
name: Cooper, William J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Gaia DR2 radial velocity sample (GDR2RVS), which provides six-dimensional phase-space information on 7.2 million stars, is of great value for inferring properties of the Milky Way. Yet a quantitative and accurate modelling of this sample is hindered without knowledge and inclusion of a well-characterized selection function. Here we derive the selection function through estimates of the internal completeness, i.e. the ratio of GDR2RVS sources compared to all Gaia DR2 sources (GDR2all). We show that this selection function or "completeness" depends on basic observables, in particular the apparent magnitude GRVS and colour G-GRP, but also on the surrounding source density and on sky position, where the completeness exhibits distinct small-scale structure. We identify a region of magnitude and colour that has high completeness, providing an approximate but simple way of implementing the selection function. For a more rigorous and detailed description we provide python code to query our selection function, as well as tools and ADQL queries that produce custom selection functions with additional quality cuts.
description: 12 pages, 16 figures, 22 footnotes; Resubmission to MNRAS after adressing comments from second referee report. Relevant python code can be found here: https://github.com/jan-rybizki/gdr2_completeness ; Interactive visualisations are available here: https://www2.mpia-hd.mpg.de/homes/rybizki/index.html#publ
Some New Aspects of Dendrimer Applications
Creators: name: Flomenbom, Ophir
name: Amir, Roey J.
name: Shabat, Doron
name: Klafter, Joseph
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Dendrimers are characterized by special features that make them promising candidates for many applications. Here we focus on two such applications: dendrimers as light harvesting antennae, and dendrimers as molecular amplifiers, which may serve as novel platforms for drug delivery. Both applications stem from the unique structure of dendrimers. We present a theoretical framework based on the master equation within which we describe these applications. The quantities of interest are the first passage time (FPT) probability density function (PDF), and its moments. We examine how the FPT PDF and its characteristics depend on the geometric and energetic structures of the dendrimeric system. In particular, we investigate the dependence of the FPT properties on the number of generations (dendrimer size), and the system bias. We present analytical expressions for the FPT PDF for very efficient dendrimeric antennae and for dendrimeric amplifiers. For these cases the mean first passage time scales linearly with the system length, and fluctuations around the mean first passage time are negligible for large systems. Relationships of the FPT to light harvesting process for other types of system-bias are discussed.
description: ~7 journal pages, 10 figrues, J. Lumi., in press
title: The Responses Of Local Education Authorities To Changes In Their Functions: A Study Of In-Service Education And Training
Creators: name: Simpson, Donald
Publisher: name: The Open University
Year: 1998

description: This research is about the politics and policy processes of education. The focus is on central Government policy relating to INSET and the political activity and responses of LEAs to new policy developments. LEAs have a statutory duty to provide efficient and sufficient schooling. This entails a concern for the professional quality of teaching. To meet this responsibility LEAs traditionally employed advisers, maintained teachers' centres and secured provision by sending teachers on INSET workshops/courses. During recent years, however, changes in the funding of LEAs and the introduction of specific grants significantly impacted on the organisation and delivery of INSET. This research ascertains the INSET provision in a sample of five LEAs; identifies the similarities and differences between these authorities in their responses to the changing funding mechanisms; and examines the underlying rationale for the variation in INSET provision. The research methodology is underpinned by an eclectic ethos. Concepts are derived from theories of organisations and policy implementation.A range of data collection techniques are employed. The research concludes that the responses to change adopted by the five LEAs in the sample are different in several important respects. Each LEAs INSET policy greatly depends on the authority's size, resources, history, culture, commitment and avenues of communication. Even where similar structures have developed, disparities in the mode of operation are evident. By way of representing the full range of responses to change which characterises each LEA, the researcher uses a spectrum. All of the LEAs in the sample sought to establish a 'partnership' with schools in regard to INSET. However, in each case, associations are framed according to a distinct set of values. At one end of the spectrum is an hierarchical association; at the centre a association which is complementary; and at the other end an enterprise association with schools.