cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Computer simulation of retinal ganglion cell Stimulation comparing varying electrode spacings
Creators: name: Watzinger, Anton
Publisher: name: TU Wien
Year: 2017
Subjects: subject: retina
subject: electrical stimjulation
subject: computere simulation
subject: Fohlmeister model

description: The arti cially generated electrical signal, in retinal prostheses is very dierent from the natural neuronal signal and dicult for the brain to interpret. Computer models in general -the present one in particular- have the ability to simulate the behaviour of the neuronal network in ways such as comparing dierent sizes of stimulating electrode con guration. However, better simulation methods are needed to fully understand these neuronal mechanisms and improve their medical applications. The objective of this thesis is to identify the optimal electrode spacing of a retinal implant that can be safely used, so that patients suering from retinal degenerative diseases can pro t from better-constructed implants. For this purpose, the energy consumption of mammalian, amphibian and cephalopodal (squid) neuronal membranes have been compared. The mammalian membrane was modelled after the Fohlmeister et al 2010 model, the amphibian membrane after Fohlmeister et al 1997 model and the squid membrane after Hodgkin and Huxley. Furthermore, their detailed energy usage was analysed, including simultaneous stimulating and inhibiting properties. Especially for this thesis, a computer model has been implemented using MATLAB and the nite element software Comsol Multiphysics in order to predict the activation of retinal ganglion cells during epi-retinal stimulation. The activation, driven by the membrane model of Fohlmeister et al 2010 was simulated on dierent parts of the neuron (sodium channel band and distant axon) with various electrode spacings. The comparison between the membranes of dierent taxonomic classes showed a partially increased energy consumption in sodium and potassium channels of the higher developed mammalian membrane compared to the amphibian membrane, which was compensated by improved synchronization between the dierent ion channel types, allowing for better cross eciency. The simulation of various electrode spacings showed a dependency between the stimulating energy on the neuron and the electrode spacing. Further- more, an ideal electrode spacing was identi ed, where the neuron was able to stimulate with least amount of energy, without wasting valuable space on the electrode carrier. The chosen membrane models and activating model, together with the methods and the performed simulations, proved to be the right combination needed in order to reach the objective of this thesis. Bene ting from the knowledge of the characteristics of the nervous system and from the capacity of today's science, patients suering from retinal degeneration diseases are given the chance to have their sense of vision restored.
Quest for New Quantum States via Field-Editing Technology
Creators: name: Cao, Gang
name: Zhao, Hengdi
name: Hu, Bing
name: Pellatz, Nicholas
name: Reznik, Dmitry
name: Schlottmann, Pedro
name: Kimchi, Itamar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report new quantum states in spin-orbit-coupled single crystals that are synthesized using a game-changing technology that "field-edits" crystal structures (borrowing from the phrase "genome editing") via application of magnetic field during crystal growth. This study is intended to fundamentally address a major challenge facing the research community today: A great deal of theoretical work predicting exotic states for strongly spin-orbit-coupled, correlated materials has thus far met very limited experimental confirmation. These conspicuous discrepancies are due chiefly to the extreme sensitivity of these materials to structural distortions. The results presented here demonstrate that the "field-edited" materials not only are much less distorted but also exhibit novel phenomena absent in their "non-edited" counterparts. The field-edited materials include an array of 4d and 5d transition metal oxides, and three representative materials presented here are Ba4Ir3O10, Ca2RuO4, and Sr2IrO4. This study provides an entirely new paradigm for discovery of new quantum states and materials otherwise unavailable.
description: 6 figures
ZAINTERESOWANIE ROLNIKÓW WYKORZYSTANIEM ODNAWIALNYCH ŹRÓDEŁ ENERGII
Creators: name: Wielewska, Izabela
name: Wielewska, Izabela
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: renewable energy sources
subject: sustainable agriculture
subject: sustainable development

description: This paper has been an attempt to determine the level of farmers’ interest in the use of RES. The research employed the method of diagnostic survey. 230 farm owners from Pomorskie and Kujawsko-Pomorskie Provinces took part in the research. The functioning of today’s farm is strictly connected with the necessity of the increase in the demand for electricity and heat. The research has allowed to establish that there is a certain level of farmers’ interest in the use of RES in animal and vegetation production, but there are still a number of obstacles on the way to their full introduction. When choosing investments in RES, every farmer must analyze the situation of his own farm – most importantly, its needs and capabilities.
Grand unfication models from SO(32) heterotic string
Creators: name: Kim, Jihn E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Grand unification groups (GUTs) are constructed from SO(32) heterotic string via $\Z_{12-I}$ orbifold compactification. So far, most phenomenological studies from string compactification relied on $\EE8$ heterotic string, and this invites the SO(32) heterotic string very useful for future phenomenological studies. Here, spontaneous symmetry breaking is achieved by Higgsing of the anti-symmetric tensor representations of SU($N$). The anti-SU($N$) presented in this paper is a completely different class from the flipped-SU($N$)s from the spinor representations of SO($2N$). Here, we realize chiral representations: $\tsix\oplus 5\cdot\nineb $ for a SU(9) GUT and $3\{{\ten}'_L\oplus {\fiveb}'_L\}$ for a SU(5)$'$ GUT. In particular, we confirm that the non-Abelian anomalies of SU(9) gauge group vanish and hence our compactification scheme achieves the key requirement. We also present the Yukawa couplings, in particular for the heaviest fermion, $t$, and lightest fermions, neutrinos. In the supersymmetric version, we present a scenario how supersymmetry can be broken dynamically via the confining gauge group SU(9). Three families in the visible sector are interpreted as the chiral spectra of SU(5)$'$ GUT.
description: 20 pages, no figure
Hadronic decay of the gravitino in the early universe and its implications to inflation
Creators: name: Kawasaki, Masahiro
name: Kohri, Kazunori
name: Moroi, Takeo
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the effects of the gravitino on the big-bang nucleosynthesis (BBN), paying particular attention to the hadronic decay mode of the gravitino. We will see that the hadronic decay of the gravitino significantly affect the BBN and, for the case where the hadronic branching ratio is sizable, very stringent upper bound on the reheating temperature after inflation is obtained.
description: 6 pages, 2 Postscript figures, Talk given at PASCOS'04 (Boston, MA, August 16 -- 22 (2004)
Quasinormal modes and stability of the rotating acoustic black hole: numerical analysis
Creators: name: Cardoso, Vitor
name: Lemos, Jose' P. S.
name: Yoshida, Shijun
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The study of the quasinormal modes (QNMs) of the 2+1 dimensional rotating draining bathtub acoustic black hole, the closest analogue found so far to the Kerr black hole, is performed. Both the real and imaginary parts of the quasinormal (QN) frequencies as a function of the rotation parameter B are found through a full non-linear numerical analysis. Since there is no change in sign in the imaginary part of the frequency as B is increased we conclude that the 2+1 dimensional rotating draining bathtub acoustic black hole is stable against small perturbations.
description: 6 pages, ReVTeX4. v2. References added
Heterogeneity and growing lengthscales in the dynamics of kinetically constrained lattice gases in two dimensions
Creators: name: Pan, Albert C.
name: Garrahan, Juan P.
name: Chandler, David
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study dynamical heterogeneity and growing dynamical lengthscales in two kinetically constrained models, namely, the one- and two-vacancy assisted triangular lattice gases. One of the models is a strong glassformer and the other is a fragile glassformer. Both exhibit heterogeneous dynamics with broadly distributed timescales as seen in the distribution of persistence times. We show that the Stokes-Einstein relation is violated, to a greater degree in the fragile glassformer, and show how this violation is related to dynamic heterogeneity. We extract dynamical lengthscales from structure factors of mobile particles and show, quantitatively, the growth of this lengthscale as density increases. We comment on how the scaling of lengths and times in these models relates to that in facilitated spin models of glasses.
description: 9 pages, 13 figures, updated fig. 12 and added fig. 13
The first light curve modeling and orbital period change investigation of nine contact binaries around the short period cut-off
Creators: name: Li, Kai
name: Kim, Chun-Hwey
name: Xia, Qi-Qi
name: Michel, Raul
name: Hu, Shao-Ming
name: Gao, Xing
name: Guo, Di-Fu
name: Chen, Xu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this paper, we present the first light curve synthesis and orbital period change analysis of nine contact binaries around the short period limit. It is found that all these systems are W-subtype contact binaries. One of them is a medium contact system while the others are shallow contact ones. Four of them manifest obvious O'Connell effect explained by a dark spot or hot spot on one of the component stars. Third light was detected in three systems. By investigating orbital period variations, we found that four of the targets display a secular period decrease while the others exhibit a long-term period increase. The secular period decrease is more likely caused by angular momentum loss while the long-term period increase is due to mass transfer from the less massive component to the more massive one. Based on the statistic of 19 ultrashort period contact binaries with known orbital period changes, we found that seven of them display long-term decrease (three of them also exhibit cyclic variations), ten of them manifest long-term increase while two of them only show cyclic variation and that most of them are shallow contact binaries supporting the long timescale angular momentum loss theory suggested by Stepien. For the three deep contact systems, we found that they are probably triple systems. The tertiary companion plays an essential role during their formation and evolution.
description: 24 pages, 6 figures, and 10 tables, accepted by AJ
Multi-scale microrheology using fluctuating filaments as stealth probes
Creators: name: Nishi, Kengo
name: MacKintosh, Fred C.
name: Schmidt, Christoph F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The mechanical properties of soft materials can be probed on small length scales by various microrheology methods. A common approach tracks fluctuations of micrometer-sized beads embedded in the medium to be characterized. This approach yields results that depend on the probe size when the medium has structure on length scales comparable to or larger than this size. Here, we introduce a filament-based microrheology (FMR) method using high-aspect-ratio semi-flexible filaments as probes. Such quasi-1D probes are much less invasive due to the nanometer-scale cross section of the probes. Moreover, by imaging the transverse bending modes, we are able to simultaneously determine the micromechanical response of the medium on multiple length scales corresponding bending wavelengths. Here, we use single-walled carbon nanotubes (SWNT) as probes that can be accurately and rapidly imaged based on their stable fluorescence. We model SWNTs as semi-flexible filaments. We find that the viscoelastic properties of sucrose and polymeric hyaluronic acid solutions measured in this way are in good agreement with those measured by conventional micro- and macrorheology.
ZMIANY PRODUKTYWNOŚCI PRACY LUDZKIEJ W TOWAROWYCH GOSPODARSTWACH ROLNYCH W POLSCE
Creators: name: Wójcik, Ewa
name: Nowak, Anna
name: Wójcik, Ewa
name: Nowak, Anna
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: commodity farms
subject: production factors
subject: labor input
subject: total productivity
subject: average productivity
subject: extreme productivity
subject: production function of Cobb-Douglas

description: This paper identifies and ASSESS total, average and extreme productivity changes regarding labor in commodity farms in Poland in first years of the European Union accession – 2004 and 2005; and also after five years of membership – in the years 2009. The researches were conducted based on data from polish FADN. Survey was made using of Cobb-Douglas production function. The results show that productivity of labor increase in examined rural farms after five years of Poland membership in the EU.
The Rossiter-McLaughlin effect and analytic radial velocity curves for transiting extrasolar planetary systems
Creators: name: Ohta, Yasuhiro
name: Taruya, Atsushi
name: Suto, Yasushi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A transiting extrasolar planet sequentially blocks off the light coming from the different parts of the disk of the host star in a time dependent manner. Due to the spin of the star, this produces an asymmetric distortion in the line profiles of the stellar spectrum, leading to an apparent anomaly of the radial velocity curves, known as the Rossiter - McLaughlin effect. Here, we derive approximate but accurate analytic formulae for the anomaly of radial velocity curves taking account of the stellar limb darkening. The formulae are particularly useful in extracting information of the projected angle between the planetary orbit axis and the stellar spin axis, λ, and the projected stellar spin velocity, V sin I_s. We create mock samples for the radial curves for the transiting extrasolar system HD209458, and demonstrate that constraints on the spin parameters (V sin I_s, λ) may be significantly improved by combining our analytic template formulae and the precision velocity curves from high-resolution spectroscopic observations with 8-10 m class telescopes. Thus future observational exploration of transiting systems using the Rossiter - McLaughlin effect is one of the most important probes to better understanding of the origin of extrasolar planetary systems, especially the origin of their angular momentum.
description: 39 pages, 16 figures, Accepted to ApJ. To match the published version (ApJ 623, April 10 issue)
Supplementary information from From disorganized equality to efficient hierarchy: how group size drives the evolution of hierarchy in human societies
Creators: name: Perret, Cedric
name: Hart, Emma
name: Powers, Simon T.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 60801 Animal Behaviour
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Supplementary figures
FAMOUS: High-Fidelity Monocular 3D Human Digitization Using View Synthesis
Creators: name: Hema, Vishnu Mani
name: Aich, Shubhra
name: Haene, Christian
name: Bazin, Jean-Charles
name: de la Torre, Fernando
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The advancement in deep implicit modeling and articulated models has significantly enhanced the process of digitizing human figures in 3D from just a single image. While state-of-the-art methods have greatly improved geometric precision, the challenge of accurately inferring texture remains, particularly in obscured areas such as the back of a person in frontal-view images. This limitation in texture prediction largely stems from the scarcity of large-scale and diverse 3D datasets, whereas their 2D counterparts are abundant and easily accessible. To address this issue, our paper proposes leveraging extensive 2D fashion datasets to enhance both texture and shape prediction in 3D human digitization. We incorporate 2D priors from the fashion dataset to learn the occluded back view, refined with our proposed domain alignment strategy. We then fuse this information with the input image to obtain a fully textured mesh of the given person. Through extensive experimentation on standard 3D human benchmarks, we demonstrate the superior performance of our approach in terms of both texture and geometry. Code and dataset is available at https://github.com/humansensinglab/FAMOUS.
ELEKTR HISOBLAGICHLAR
Creators: name: Mirzayev, Sardorbek
name: Азимов, Араббой
name: Abobakirov, Rustambek
name: Axmadjonov, Raximjon
Publisher: name: Zenodo
Year: 2024

description: Vatt-soat o'lchagich sifatida ham tanilgan elektr hisoblagich-bu uy yoki biznesda iste'mol qilinadigan elektr energiyasi miqdorini o'lchaydigan elektr qurilma. Bu energiya sarfini hisobga olish va energiya to'lovlarining to'g'riligini ta'minlash uchun hal qiluvchi vositadir. Hisoblagich iste'mol qilinadigan energiya uchun standart o'lchov birligi bo'lgan kilovatt-soatda (kVt soat) iste'mol qilinadigan elektr energiyasi miqdorini o'lchaydi.
Satellite number density profiles of primary galaxies in the 2dFGRS
Creators: name: Sales, Laura
name: Lambas, Diego G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse the projected radial distribution of satellites around bright primary galaxies in the 2dFGRS. We have considered several primary-satellite subsamples to search for dependences of the satellite number density profile, ρ(r_p), on properties of satellites and primaries. We find significant differences of the behaviour of ρ(r_p) depending on primary characteristics. In star-forming primaries, the satellite number density profile is consistent with power laws within projected distance 20100 kpc), the density profiles of all primaries is well described by power laws, although we notice that for red, early spectral type primaries, the outer slope obtained is steeper than that corresponding to blue, late spectral type ones. We have tested our results by control samples of galaxies identical to the samples of satellites in apparent magnitude and projected distance to the primary, but with a large relative velocity. This sample of unphysical primary-galaxy pairs shows a flat radial density beyond r_p=20 kpc indicating that our results are not biased toward a decrease of the true number of objects due to catalogue selection effects. Our results can be understood in terms of dynamical friction and tidal stripping on satellites in the primary haloes. These processes can effectively transfer energy to the dark matter, flattening the central steep profiles of the satellite distribution in evolved systems.
description: 8 pages, 6 figures. Accepted for publication in MNRAS
T-duality for the sigma model with boundaries
Creators: name: Albertsson, Cecilia
name: Lindstrom, Ulf
name: Zabzine, Maxim
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the most general local boundary conditions necessary for T-duality to be compatible with superconformal invariance of the two-dimensional N=1 supersymmetric nonlinear sigma model with boundaries. To this end, we construct a consistent gauge invariant parent action by gauging a U(1) isometry, with and without boundary interactions. We investigate the behaviour of the boundary conditions under T-duality, and interpret the results in terms of D-branes.
description: 48 pages, LaTeX, v2: typos corrected, references added
Forward modeling the orbits of companions to pulsating stars from their light travel time variations
Creators: name: Hey, Daniel R.
name: Murphy, Simon J.
name: Foreman-Mackey, Daniel
name: Bedding, Timothy R.
name: Pope, Benjamin J. S.
name: Hogg, David W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Mutual gravitation between a pulsating star and an orbital companion leads to a time-dependent variation in path length for starlight traveling to Earth. These variations can be used for coherently pulsating stars, such as the δ Scuti variables, to constrain the masses and orbits of their companions. Observing these variations for δ Scuti stars has previously relied on subdividing the light curve and measuring the average pulsation phase in equally sized subdivisions, which leads to under-sampling near periapsis. We introduce a new approach that simultaneously forward-models each sample in the light curve and show that this method improves upon current sensitivity limits - especially in the case of highly eccentric and short-period binaries. We find that this approach is sensitive enough to observe Jupiter mass planets around δ Scuti stars under ideal conditions, and use gravity-mode pulsations in the subdwarf B star KIC 7668647 to detect its companion without radial velocity data. We further provide robust detection limits as a function of the SNR of the pulsation mode and determine that the minimum detectable light travel time amplitude for a typical Kepler δ Scuti is around 2 s. This new method significantly enhances the application of light travel time variations to detecting short period binaries with pulsating components, and pulsating A-type exoplanet host stars, especially as a tool for eliminating false positives.
description: 14 pages, accepted for publication in AJ
Inclusive pi0 spectra at high transverse momentum in d-Au collisions at RHIC
Creators: name: Mischke, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Preliminary results on inclusive neutral pion production in d-Au collisions at sqrt(s_NN) = 200 GeV in the pseudo-rapidity range 0
description: 4 pages, 5 figures, 18th Nuclear Physics Division Conference of the EPS, Prague, submitted to Nucl. Phys. A
AKTYWNOŚĆ SPOŁECZNA I GOSPODARCZA KOBIET JAKO CZYNNIK ZRÓWNOWAŻONEGO ROZWOJU OBSZARÓW WIEJSKICH
Creators: name: Wróblewska, Wioletta
name: Paszko, Dariusz
name: Wróblewska, Wioletta
name: Paszko, Dariusz
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: social activity
subject: economic activity
subject: women
subject: village
subject: sustainable agriculture and rural development

description: It perform analysis of social-economic activity level among women working in farms about horticultural profile on Lubelszczyzna in context of its influence on Sustainable Agriculture and Rural Development – SARD). Among others, subject analysis conditionality of demographic woman (sex, age, education), economic (level of revenue, expenses) and other datas concerning of activity woman on village. It concentrate in work on two dimension of Sustainable Agriculture and Rural Development i.e. economic and social. Social activity of researched group of woman was not far too high, from the point of view of plurality of role fulfilled in farms mainly, but respondents declared wish of operation on social field in future. Among others, researched women exerted wishes of farthest personal and farms development, so, they have maintained high level of economic activity.
Neutral pion decay in dense skyrmion matter
Creators: name: Kalloniatis, Alexander C.
name: Park, Byung-Yoon
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the density dependence of the decay $π^0\to γγ$ using the Skyrme Lagrangian to describe simultaneously both the matter background and mesonic fluctuations. Pion properties such as mass and decay constant are modified by the medium. This leads to large suppression at high density of both photo-production from the neutral pion and the reverse process. The in-medium effective charge of $π^{\pm}$ are also discussed in the same framework.
description: 8 pages, 4 figures. Corrections in light of referee comments
title: Base load energy generation by combined renewable energy systems with hydrogen storage technologies
Creators: name: Özarmaǧan, Jiren
Publisher: name: TU Wien
Year: 2017
Subjects: subject: Base Load Energy Generation
subject: Combinded Renewable Energy Systems
subject: Hydrogen Storage Techologies
subject: Base Load Energy Generation
subject: Combinded Renewable Energy Systems
subject: Hydrogen Storage Techologies

description: Hydrogen is a fuel that can be used to meet many different demands. Hydrogen, mechanical work, storage, reacting with another fuel and giving a new product suitable for the needs, electricity generation are the main ones. Hydrogen generation, storage and energy conversion technologies are developing and will take the role of many types and it is expected to reach an important place for the increasing energy needs of the human beings. In this thesis, I focused on the potential of a renewable energy power solutions for generating base load electricity. Peak load generation is not previously estimated and has not predictable characteristic.On the other hand,base load can be previously estimated. For this reason, the base load is used in the day ahead market. The aim of this thesis is to create a base load from the renewable energy sources. Thus, base load pricing that the state has provided can be used. In addition, Hydrogen which is the storage system with the lowest operational and maintenance costs was preferred to properly store peak loads. The multi type renewable plant, that I designed, which is planned to be constructed in Usak province of Turkey, was realized by integrating hydrogen storage with solar, wind and biomass energy from renewable energy sources. The result is that Usak province in Turkey has the necessary potential for the related project.
Dual identity : the experience of gay Christian males
Creators: name: Dueck, Timothy Allan
Publisher: name: University of British Columbia
Year: 2010

description: This qualitative study explores the context and process of identity formation in gay Christian males. Participants were recruited via the Internet to conduct online interviews and a total of four participants were interviewed twice. The findings include four prominent themes which provide greater understanding as to how gay Christians achieve and experience healthy identity integration. Discussion of research findings includes applications to social work knowledge and direct practice.
Controlling light absorption of graphene at critical coupling through magnetic dipole quasi-bound states in the continuum resonance
Creators: name: Wang, Xing
name: Duan, Junyi
name: Chen, Wenya
name: Zhou, Chaobiao
name: Liu, Tingting
name: Xiao, Shuyuan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Enhancing the light-matter interaction in two-dimensional (2D) materials with high-$Q$ resonances in photonic structures has boosted the development of optical and photonic devices. Herein, we intend to build a bridge between the radiation engineering and the bound states in the continuum (BIC), and present a general method to control light absorption at critical coupling through the quasi-BIC resonance. In a single-mode two-port system composed of graphene coupled with silicon nanodisk metasurfaces, the maximum absorption of 0.5 can be achieved when the radiation rate of the magnetic dipole resonance equals to the dissipate loss rate of graphene. Furthermore, the absorption bandwidth can be adjusted more than two orders of magnitude from 0.9 nm to 94 nm by simultaneously changing the asymmetric parameter of metasurfaces, the Fermi level and the layer number of graphene. This work reveals out the essential role of BIC in radiation engineering and provides promising strategies in controlling light absorption of 2D materials for the next-generation optical and photonic devices, e.g., light emitters, detectors, modulators, and sensors.
A descriptive study of the regional and time-point changes in the Filipinos’ internet search for tooth decay and toothache
Creators: name: Junhel Dalanon
name: Matsuka, Yoshizo
Publisher: name: figshare
Year: 2020
Subjects: subject: 160305 Population Trends and Policies
subject: FOS: Sociology
subject: 80109 Pattern Recognition and Data Mining
subject: FOS: Computer and information sciences
subject: 110502 Dental Therapeutics, Pharmacology and Toxicology
subject: FOS: Clinical medicine
subject: 110599 Dentistry not elsewhere classified
subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences
subject: 111710 Health Counselling
subject: 111712 Health Promotion
subject: Health Care
subject: 111704 Community Child Health
subject: 111708 Health and Community Services
subject: 80702 Health Informatics
subject: FOS: Media and communications
subject: 111711 Health Information Systems (incl. Surveillance)
subject: 111709 Health Care Administration
subject: 140208 Health Economics
subject: FOS: Economics and business
subject: 111715 Pacific Peoples Health
subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences
subject: 160508 Health Policy
subject: FOS: Political science
subject: 111717 Primary Health Care

description: Background: The Philippines has one of the highest prevalence of untreated tooth decay (TD) in the world. Toothache (TA) is a common sequela of chronic and untreated TD. Google Trends (GT) offers an inexpensive and fast method of assessing search trend for these health conditions.Objectives: This study aimed to characterize the regional and time-point variations in the Filipinos' internet searches for TD and TA.Methods: A descriptive analysis of a search query done on Google Trends using the search terms TD and TA was done. The parameters were constrained to include only data from the Philippines, from November 2009 to November 2019, under the health category, and the web search database. Results: The top three regions that had the highest searches for TA were MIMAROPA (100%), ARMM (100%), and Caraga (82%), while CAR (27%), Metro Manila (27%), and Ilocos Region had the highest search results for TD. From 2009 (19.85%) the searches for TA progressively increased until 2019 (92.61%), while the searches for TD remained comparable from 2009 (25.09%) to 2019 (25.98%).Conclusion: The results of this study reveal regional and time-point differences in the Filipinos' search interests for TD and TA.
Dirac Sea for Bosons I -- Formulation of Negative Energy Sea for Bosons
Creators: name: Nielsen, Holger B.
name: Ninomiya, Masao
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is proposed to make formulation of second quantizing a bosonic theory by generalizing the method of filling the Dirac negative energy sea for fermions. We interpret that the correct vacuum for the bosonic theory is obtained by adding minus one boson to each single particle negative energy states while the positive energy states are empty. The boson states are divided into two sectors ; the usual positive sector with positive and zero numbers of bosons and the negative sector with negative numbers of bosons. Once it comes into the negative sector it cannot return to the usual positive sector by ordinary interaction due to a barrier. It is suggested to use as a playground model in which the filling of empty fermion Dirac sea and the removal of boson from the negative energy states are not yet performed. We put forward such a naive vacuum world in the present paper. The successive paper will concern a CPT-like Theorem in the naive vacuum world.
description: 24 pages, 2 figures, Latex; added refereces, corrected typos
Nonsingular black holes in nonlinear gravity coupled to Euler-Heisenberg electrodynamics
Creators: name: Guerrero, Merce
name: Rubiera-Garcia, Diego
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study static, spherically symmetric black holes supported by Euler-Heisenberg theory of electrodynamics and coupled to two different modified theories of gravity. Such theories are the quadratic $f(R)$ model and Eddington-inspired Born-Infeld gravity, both formulated in metric-affine spaces, where metric and affine connection are independent fields. We find exact solutions of the corresponding field equations in both cases, characterized by mass, charge, the Euler-Heisenberg coupling parameter and the modified gravity one. For each such family of solutions, we characterize its horizon structure and the modifications in the innermost region, finding that some subclasses are geodesically complete. The singularity regularization is achieved under two different mechanisms: either the boundary of the manifold is pushed to an infinite affine distance, not being able to be reached in finite time by any geodesic, or the presence of a wormhole structure allows for the smooth extension of all geodesics overcoming the maximum of the potential barrier.
description: 14 pages, 8 figures, revtex4-1 style. v2: some new discussion and minor corrections. Version to appear in Phys. Rev. D
Stabilization mechanism for two-dimensional solitons in nonlinear parametric resonance
Creators: name: Alexeeva, N. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider a simple model system supporting stable solitons in two dimensions. The system is the parametrically driven damped nonlinear Schrödinger equation, and the soliton stabilises for sufficiently strong damping. The purpose of this note is to elucidate the stabilisation mechanism; we do this by reducing the partial differential equation to a finite-dimensional dynamical system. Our conclusion is that the negative feedback loop occurs via the enslaving of the soliton's phase, locked to the driver, to its amplitude and width.
description: 10 pages, 2 figures
A randomized controlled trial of the effects of meditation on home care nurses’ work stress
Creators: name: Ferrer, Rosanna Rachelle
Publisher: name: University of British Columbia
Year: 2010

description: The increase of community home care nurses' work stress has been identified as more acutely ill patients discharged into the community create greater demand based on larger case loads with more complex case management. Surprisingly, no research to date has evaluated stress reduction interventions which claim to protect community home care nurses' from the long-term effects of work stress. The purpose of this study was to evaluate the efficacy of a stress reduction intervention using meditation to decrease home care nurses' symptoms of work stress. These symptoms were defined as anxiety, fatigue and reduced spiritual well-being. The study design was a randomized controlled trail. From a sample of convenience, 27 subjects were randomly assigned to an intervention (n=13) and wait-list control group (n=14). The intervention group attended a 5 hour meditation class once a week for 4 weeks. The wait-list group was given no specific instructions. Home care nurses' (HCN) symptoms of work stress were measured pre-intervention and 4 weeks post intervention using the Spielberger's, State and Trait Anxiety scale, the SF-36 Vitality sub-scale, and the JAREL Spiritual Well-being scale. There was a statistically significant decrease in HCN's trait- anxiety (p=0.014) and fatigue levels (p=0.016) at a 0.05 level of significance. Although, there was a decrease in state anxiety (p=0.48) and an increase in the JAREL spiritual well-being measures (p=0.11), the differences were not statistically significant. The findings suggested that meditation has the potential to shift home care nurses' appraisal of stressful situation from being a threat to being a challenge, thereby reducing symptoms of work stress, such as trait anxiety and fatigue. Implications for practice and research are discussed.
DEVELOPMENT OF HISTORICAL, SOCIO-CULTURAL CONDITIONS AND SOCIAL ENVIRONMENT IN THE MUSLIM EAST IN THE 9TH-11TH CENTURIES DURING DIFFERENT DYNASTIES
Creators: name: Boymirzayev, Qahramon
Publisher: name: Zenodo
Year: 2024

description: The article examines the historical, socio-cultural conditions and social environment in the Muslim East, and the scientific-methodological basis of studying the interpretation of justice in moral views. Also, the development of the historical, socio-cultural conditions and social environment in the Muslim East in the 9th-11th centuries during different dynasties was analyzed.
A generalized decay law for particle- and wave-like thermal phonons
Creators: name: Zhang, Zhongwei
name: Guo, Yangyu
name: Bescond, Marc
name: Chen, Jie
name: Nomura, Masahiro
name: Volz, Sebastian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Our direct atomic simulations reveal that a thermally activated phonon mode involves a large population of elastic wavepackets. These excitations are characterized by a wide distribution of lifetimes and coherence times expressing particle- and wave-like natures. In agreement with direct simulations, our theoretical derivation yields a generalized law for the decay of the phonon number taking into account coherent effects. Before the conventional exponential decay due to phonon-phonon scattering, this law introduces a delay proportional to the square of the coherence time. This additional regime leads to a moderate increase in relaxation times and thermal conductivity. This work opens new horizons in the understanding of the origin and the treatment of thermal phonons.
description: 5 pages, 5 figures, 1 Supplementary Material
MHD stability of fully non inductive discharges in Tore Supra
Creators: name: Maget, P.
name: Imbeaux, F.
name: Huysmans, G.
name: Moreau, Ph.
name: Ottaviani, M.
name: Segui, J. -L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: During the 2003 experimental campaign, the aim of realizing reliable fully non inductive discharges has been successfully completed in Tore Supra. One the major difficulties in optimizing this scenario comes from MHD stability issues. Indeed, the current profile obtained with LH antennas in these experiments is prone to the triggering of single or double tearing modes. Under certain conditions, the discharges enters in a regime of permanent MHD activity. The present work investigates the MHD properties of these fully non-inductive discharges in the operational space defined by the toroidal magnetic field B, the total plasma current Ip, and the mean parallel index of LH waves . Linear MHD stability properties divide the operational space in regions separated by rational values of the minimum of the safety factor. We discuss in our work the localisation of the transition between benign MHD activity and the MHD regime.
description: 12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France)
Finite-Density Massless Two-Color QCD at Isospin Roberge-Weiss Point and 't Hooft Anomaly
Creators: name: Furusawa, Takuya
name: Tanizaki, Yuya
name: Itou, Etsuko
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the phase diagram of two-flavor massless two-color QCD (QC$_2$D) under the presence of quark chemical potentials and imaginary isospin chemical potentials. At the special point of the imaginary isospin chemical potential, called the isospin Roberge--Weiss (RW) point, two-flavor QC$_2$D enjoys the $\mathbb{Z}_2$ center symmetry that acts on both quark flavors and the Polyakov loop. We find a $\mathbb{Z}_2$ 't Hooft anomaly of this system, which involves the $\mathbb{Z}_2$ center symmetry, the baryon-number symmetry, and the isospin chiral symmetry. Anomaly matching, therefore, constrains the possible phase diagram at any temperatures and quark chemical potentials at the isospin RW point, and we compare it with previous results obtained by chiral effective field theory and lattice simulations. We also point out an interesting similarity of two-flavor massless QC$_2$D with $(2+1)$d quantum anti-ferromagnetic systems.
description: 23 pages, 2 figures, 2 appendices. v2: references are updated
DEVELOPMENT OF HISTORICAL, SOCIO-CULTURAL CONDITIONS AND SOCIAL ENVIRONMENT IN THE MUSLIM EAST IN THE 9TH-11TH CENTURIES DURING DIFFERENT DYNASTIES
Creators: name: Boymirzayev, Hero
Publisher: name: Zenodo
Year: 2024

description: The article examines the historical, socio-cultural conditions and social environment in the Muslim East, and the scientific-methodological basis of studying the interpretation of justice in moral views. Also, the development of the historical, socio-cultural conditions and social environment in the Muslim East in the 9th-11th centuries during different dynasties was analyzed.
Description of quantum dynamics of open systems based on collision-like models
Creators: name: Ziman, Mario
name: Stelmachovic, Peter
name: Buzek, Vladimir
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Master equations in the Lindblad form describe evolution of open quantum systems that is completely positive and simultaneously has a semigroup property. We analyze a possibility to derive this type of master equations from an intrinsically discrete dynamics that is modelled as a sequence of collisions between a given quantum system (a qubit) with particles that form the environment. In order to illustrate our approach we analyze in detail how a process of an exponential decay and a process of decoherence can be derived from a collision-like model in which particular collisions are described by SWAP and controlled-NOT interactions, respectively.
description: 7pages, 3figures, to appear in Open Systems and Information Dynamics
Stasistically constrained operator associated with additivity of communication channel
Creators: name: Fukumi, Toshio
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Additivity of quantum communication channel is discussed in terms of Poisson process to show it is additive in probability. Poisson process is shown to be responsible for entanglement which is a rare event.
description: 6 pages, 2 figures, Quantum Optics and Application in Computation and Communication (Nov. 2004 Beijing)
The Evolution of Dental Education in the Philippines
Creators: name: Junhel Dalanon
name: Matsuka, Yoshizo
Publisher: name: figshare
Year: 2020
Subjects: subject: 130311 Pacific Peoples Education
subject: FOS: Educational sciences
subject: Education
subject: 130199 Education systems not elsewhere classified
subject: 139999 Education not elsewhere classified
subject: 160506 Education Policy
subject: FOS: Political science
subject: 130313 Teacher Education and Professional Development of Educators
subject: 130101 Continuing and Community Education
subject: 130103 Higher Education
subject: 130308 Gender, Sexuality and Education
subject: 130302 Comparative and Cross-Cultural Education
subject: 130303 Education Assessment and Evaluation
subject: 220202 History and Philosophy of Education
subject: FOS: Philosophy, ethics and religion
subject: 130399 Specialist Studies in Education not elsewhere classified
subject: 110599 Dentistry not elsewhere classified
subject: FOS: Clinical medicine

description: Comparable to the history of dentistry in other countries, the dental practice in the Philippines began as a crude craft. The first tooth pullers were barber surgeons and were known as sacamuelas during the Spanish occupation. The first special course resembling that of dentistry in the country was offered by the University of Santo Tomas and the graduates were called cirujano ministrantes. Later on, the term was changed to cirujano dentistas.
Measurable Consequences of the Local Breakdown of the Concept of Temperature
Creators: name: Hartmann, Michael
name: Mahler, Guenther
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Local temperature defined by a local canonical state of the respective subsystem, does not always exist in quantum many body systems. Here, we give some examples of how this breakdown of the temperature concept on small length scales might be observed in experiments: Measurements of magnetic properties of an anti-ferromagnetic spin-1 chain. We show that those magnetic properties are in fact strictly local. As a consequence their measurement reveals whether the local (reduced) state can be thermal. If it is, a temperature may be associated to the measurement results, while this would lead to inconsistencies otherwise.
description: some comments added, results remain unchanged