cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mind the gap: the power of combining photometric surveys with intensity mapping
Creators: name: Modi, Chirag
name: White, Martin
name: Castorina, Emanuele
name: Slosar, Anže
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The long wavelength modes lost to bright foregrounds in the interferometric 21-cm surveys can partially be recovered using a forward modeling approach that exploits the non-linear coupling between small and large scales induced by gravitational evolution. In this work, we build upon this approach by considering how adding external galaxy distribution data can help to fill in these modes. We consider supplementing the 21-cm data at two different redshifts with a spectroscopic sample (good radial resolution but low number density) loosely modeled on DESI-ELG at $z=1$ and a photometric sample (high number density but poor radial resolution) similar to LSST sample at $z=1$ and $z=4$ respectively. We find that both the galaxy samples are able to reconstruct the largest modes better than only using 21-cm data, with the spectroscopic sample performing significantly better than the photometric sample despite much lower number density. We demonstrate the synergies between surveys by showing that the primordial initial density field is reconstructed better with the combination of surveys than using either of them individually. Methodologically, we also explore the importance of smoothing the density field when using bias models to forward model these tracers for reconstruction.
description: 16 pages, 7 Figures
Unification of standard and exotic matter through a $Z_2$ symmetry
Creators: name: Matute, Ernesto A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a scenario in which the discrete weak symmetry between quarks and leptons is extended to the weak force by introducing exotic partners. We conjecture that there exists a hidden discrete symmetry $\tilde{P}$, defining a $Z_2$ group, between standard and exotic quarks and leptons. The unified model $SU(3)_{q} \times SU(3)_{\tilde{q}} \times SU(2)_{q \tilde{\ell}} \times SU(2)_{\tilde{q} \ell} \times U(1)_{Y} \times \tilde{P}$ is discussed, where the unifying discrete symmetry extends over particles and forces. It is shown that the lighter neutral and charged weak bosons generated upon spontaneous symmetry breaking have the same properties as those of the standard model. Cabbibo-Kobayashi-Maskawa unitarity is used to set a mass of order 2.8 TeV for the nonstandard weak bosons, which do not exhibit quark-lepton universality. A grand unified theory of $GUT_{q \tilde{\ell}} \times GUT_{\tilde{q} \ell} \times \tilde{P}$ type, with decay of exotic matter into standard matter and no decay of the ordinary nucleon, is put forward.
description: 6 pages, no figures
Galaxy and Mass Assembly (GAMA): Tracing galaxy environment using the marked correlation function
Creators: name: Sureshkumar, U.
name: Durkalec, A.
name: Pollo, A.
name: Bilicki, M.
name: Loveday, J.
name: Farrow, D. J.
name: Holwerda, B. W.
name: Hopkins, A. M.
name: Liske, J.
name: Pimbblet, K. A.
name: Taylor, E. N.
name: Wright, A. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate how different galaxy properties - luminosities in u, g, r, J, K-bands, stellar mass, star formation rate and specific star formation rate trace the environment in the local universe. We also study the effect of survey flux limits on galaxy clustering measurements. We measure the two-point correlation function (2pCF) and marked correlation functions (MCFs) using the aforementioned properties as marks. We use nearly stellar-mass-complete galaxy sample in the redshift range 0.1 < z < 0.16 from the Galaxy And Mass Assembly (GAMA) survey with a flux limit of r < 19.8. Further, we impose a brighter flux limit of r < 17.8 to our sample and repeat the measurements to study how this affects galaxy clustering analysis. We compare our results to measurements from the Sloan Digital Sky Survey (SDSS) with flux limits of r < 17.8 and r < 16.8. We show that the stellar mass is the best tracer of galaxy environment, the K-band luminosity being a good substitute, although such a proxy sample misses close pairs of evolved, red galaxies. We also confirm that the u-band luminosity is a good, but not a perfect proxy of star formation rate in the context of galaxy clustering. We observe an effect of the survey flux limit on clustering studies - samples with a higher flux limit (smaller magnitude) miss some information about close pairs of starburst galaxies.
description: 15 pages, 7 figures, matches the version published in A&A
An Investigation Into Consumer Behavior and Milk Product Demand in Thiruvanamalai District, Tamilnadu
Creators: name: P.Sowmiya, M.Ramu
Publisher: name: Zenodo
Year: 2024

description: Opportunities to enhance the quality and sales of dairy products can be found at every stage of their life cycle through marketing. Industrialised nations have shown that in order to tap, retain, and remain in the market, marketing strategies must be developed in response to changing consumer behaviour, which requires continual assessments of the market. The study looked at how people buy ghee, curd, milk, and buttermilk. In order to maintain operations and build client loyalty, marketers need to take action, according to the report. The researcher provided helpful suggestions for dairy marketing strategies based on the study's findings. The government of India should back dairy producers and increase demand for milk if the country wants to improve its citizens' health and advance economically.
The dendritic morphology of local patch and callosal neurons in the superficial layers of cat visual cortex (area 18)
Creators: name: Thejomayen, D. Moira
Publisher: name: University of British Columbia
Year: 2009

description: Using the double-labeling technique with fluorescent tracers local patch and callosal neurons in area 18 of the cat were studied. The main goal was to determine whether single cortical neurons participate in both the local patch networks and callosal projection. Callosal and local patch neurons were found in overlapping and interdigitating patch networks. Double-labeled cells were not found in the regions of overlap between the two populations of labeled cells, or in any other locations in area 18, suggesting that the callosal and local patch neurons form separate neuronal populations in the superficial layers of cat area 18. The morphology of local patch neurons was next examined and compared to callosal neurons in the superficial layers of area 18. The local patch neurons were mostly spiny pyramidal neurons including modified, small to medium sized standard, and star pyramids. Smooth, multipolar neurons, presumably of the basket cell type were also present. In the tangential plane, the basal dendritic trees of about half of the local patch pyramidal neurons in layer 2/3 had mediolaterally elongated fields and the rest had circular fields. The callosal neurons in layer 2/3 were standard, fusiform, and star pyramids. Callosal standard pyramids were, on average, larger than the local patch standard pyramids based on mean values of somatic areal measurements. The mean dendritic field width of the callosal cells was also larger than that of the local cells. Callosal cells also possesed a more complex dendritic branching pattern, with numerous branch points. Both features appear to be independent of cell size. Finally, almost all the callosal cells had closely circular dendritic fields when viewed in the tangential plane. Thus, the local patch and callosal neurons can be distinguished from each other by morphological and morphometric parameters.
Оценка эффективности управления инвестиционным портфелем
Creators: name: Печенова Евгения Андреевна
Publisher: name: Московский экономический журнал
Year: 2019
Subjects: инвестиционный портфель
управление инвестиционным портфелем
коэффициент Трейнора
коэффициент Шарпа
индекс Дженсена.

description: Современный этап развития общества характеризуется беспрерывными изменениями окружающей среды и свободной деловой конкуренцией на рынке капиталов за привлечение инвестиций. Каждая компания старается привлекать как можно больше инвестиций для осуществления эффективной деятельности, и, наконец, добиваться положительного результата своего экономического развития. В свою же очередь, задачами современного инвестора выступает оценка привлекательности компании, принятие правильных инвестиционных решений, и оценка эффективности своих инвестиций. Как уже было упомянуто, в современном мире наблюдаются постоянные изменения. Они происходят настолько быстро, что ключевой задачей становится не только выбор финансовых инструментов для инвестирования, а также постоянная оценка эффективности своих инвестиций и изменение структуры своего инвестиционного портфеля. Стоит отметить, что никакой профессиональный инвестор не полагается на удачу. Вместо этого, он всегда имеет четкую стратегию, описанную в цифрах, а также всегда пересматривает свой портфель.
National Survey on Energy and Environment: Fall 2013
Creators: name: University Of Michigan Center For Local, State
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Average temperature on earth is increasing (2); earth warming due to human activity/natural patterns in earth's environment (1); various factors affecting view that earth is getting warmer (9); view that earth is not getting warmer (3); concerns about climate change (global warming); international agreement to limit global greenhouse gas emissions (2); Kyoto protocol (1); ways for the government to reduce greenhouse gas emissions (24); willingness to pay extra for more renewable energy to be produced (2); agree/disagree with various statements about climate change (5); construction of pipelines to transport oil and gas (1); primary source for national/world news (1); political partisanship (1); political ideology (1).
On the feasibility of studying vortex noise in 2D superconductors with cold atoms
Creators: name: Scheel, Stefan
name: Fermani, Rachele
name: Hinds, E. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate the feasibility of using ultracold neutral atoms trapped near a thin superconductor to study vortex noise close to the Kosterlitz-Thouless-Berezinskii transition temperature. Alkali atoms such as rubidium probe the magnetic field produced by the vortices. We show that the relaxation time $T_1$ of the Zeeman sublevel populations can be conveniently adjusted to provide long observation times. We also show that the transverse relaxation times $T_2$ for Zeeman coherences are ideal for studying the vortex noise. We briefly consider the motion of atom clouds held close to the surface as a method for monitoring the vortex motion.
description: 4 pages, 1 figure
Dynamical mechanisms of vortex pinning in superfluid thin films
Creators: name: Stockdale, Oliver R.
name: Reeves, Matthew T.
name: Davis, Matthew J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We characterize the mechanisms of vortex pinning in a superfluid thin film described by the two-dimensional Gross-Pitaevskii equation. We consider a vortex "scattering experiment" whereby a single vortex in a superfluid flow interacts with a circular, uniform pinning potential. By an analogy with linear dielectrics, we develop an analytical hydrodynamic approximation that predicts vortex trajectories, the vortex fixed point and the unpinning velocity. We then solve the Gross-Pitaevskii equation to validate this model, and build a phase portrait of vortex pinning. We identify two different dynamical pinning mechanisms marked by distinctive phonon emission signatures: one enabled by acoustic radiation and another mediated by vortex dipoles nucleated within the pin. Relative to obstacle size, we find that pinning potentials on the order of the healing length are more effective for vortex capture. Our results could be useful in mitigating the negative effects of drag due to vortices in superfluid channels, in analogy to maximising supercurrents in type-II superconductors.
description: 5+4 pages, 4+5 figures, supplemental videos: https://www.youtube.com/watch?v=l8E8RdydaY0
Effective and Scalable Clustering on Massive Attributed Graphs
Creators: name: Yang, Renchi
name: Shi, Jieming
name: Yang, Yin
name: Huang, Keke
name: Zhang, Shiqi
name: Xiao, Xiaokui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Given a graph G where each node is associated with a set of attributes, and a parameter k specifying the number of output clusters, k-attributed graph clustering (k-AGC) groups nodes in G into k disjoint clusters, such that nodes within the same cluster share similar topological and attribute characteristics, while those in different clusters are dissimilar. This problem is challenging on massive graphs, e.g., with millions of nodes and billions of edges. For such graphs, existing solutions either incur prohibitively high costs, or produce clustering results with compromised quality. In this paper, we propose ACMin, an effective approach to k-AGC that yields high-quality clusters with cost linear to the size of the input graph G. The main contributions of ACMin are twofold: (i) a novel formulation of the k-AGC problem based on an attributed multi-hop conductance quality measure custom-made for this problem setting, which effectively captures cluster coherence in terms of both topological proximities and attribute similarities, and (ii) a linear-time optimization solver that obtains high-quality clusters iteratively, based on efficient matrix operations such as orthogonal iterations, an alternative optimization approach, as well as an initialization technique that significantly speeds up the convergence of ACMin in practice. Extensive experiments, comparing 11 competitors on 6 real datasets, demonstrate that ACMin consistently outperforms all competitors in terms of result quality measured against ground-truth labels, while being up to orders of magnitude faster. In particular, on the Microsoft Academic Knowledge Graph dataset with 265.2 million edges and 1.1 billion attribute values, ACMin outputs high-quality results for 5-AGC within 1.68 hours using a single CPU core, while none of the 11 competitors finish within 3 days.
description: This is the full version of the paper appearing in TheWebConf 2021. The DOI assigned: https://doi.org/10.1145/3442381.3449875
Application of atomic magnetometry in magnetic particle detection
Creators: name: Xu, S.
name: Donaldson, M. H.
name: Pines, A.
name: Rochester, S. M.
name: Budker, D.
name: Yashchuk, V. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate the detection of magnetic particles carried by water in a continuous flow using an atomic magnetic gradiometer. Studies on three types of magnetic particles are presented: a single cobalt particle (diameter ~150 um, multi-domain), a suspension of superparamagnetic magnetite particles (diameter \~1 um), and ferromagnetic cobalt nanoparticles (diameter ~10 nm, 120 kA/m magnetization). Estimated detection limits are 20 um diameter for a single cobalt particle at a water flow rate 30 ml/min, 5x10^3 magnetite particles at 160 ml/min, and 50 pl for the specific ferromagnetic fluid at 130 ml/min. Possible applications of our method are discussed.
description: 10 pages, 4 figures
The Hertz/VPM polarimeter: Design and first light observations
Creators: name: Krejny, Megan
name: Chuss, David
name: d'Aubigny, Christian Drouet
name: Golish, Dathon
name: Houde, Martin
name: Hui, Howard
name: Kulesa, Craig
name: Loewenstein, Robert F.
name: Moseley, S. Harvey
name: Novak, Giles
name: Voellmer, George
name: Walker, Chris
name: Wollack, Ed
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present first results of Hertz/VPM, the first submillimeter polarimeter employing the dual Variable-delay Polarization Modulator (dual-VPM). This device differs from previously used polarization modulators in that it operates in translation rather than mechanical rotation. We discuss the basic theory behind this device, and its potential advantages over the commonly used half wave plate (HWP). The dual-VPM was tested both at the Submillimeter Telescope Observatory (SMTO) and in the lab. In each case we present a detailed description of the setup. We discovered nonideal behavior in the system. This is at least in part due to properties of the VPM wire grids (diameter, spacing) employed in our experiment. Despite this, we found that the dual-VPM system is robust, operating with high efficiency and low instrumental polarization. This device is well suited for air and space-borne applications.
description: 31 pages, 11 figures, 2 tables
Λαογραφική έρευνα για την Ν.Λάμψακο Ευβοίας και τo Lapseki, Μικράς Ασίας με σκοπό την ανάπτυξη σχετικού ιστοχώρου (διαδικτυακό ντοκιμαντέρ)
Creators: name: Ποδάρα, Αννα Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: διαδικτυακό ντοκιμαντέρ
Λάμψακος
οπτικοακουστική επικοινωνία
web-documentary
e-documentary
multimedia storytelling

description: H παρούσα έρευνα έχει διττό σκοπό: Να εξετάσει το διαδικτυακό ντοκιμαντέρ (webdoc), ως μια νέα, ταχέως εξελισσόμενη τάση στην αγορά των νέων μέσων και παράλληλα σε πρακτικό επίπεδο να δημιουργήσει ένα διαδραστικό ντοκιμαντέρ, από τα πρώτα που έχουν γίνει στην Ελλάδα, εφαρμόζοντας την θεωρία στην πράξη. Η έρευνα εμπλουτίζεται με συνεντεύξεις από άτομα που εμφανίζουν ηγετική πορεία στην αγορά του webdoc, σε Ελλάδα και εξωτερικό. Σε πρακτικό επίπεδο, η έρευνα για την δημιουργία του webdoc βασίζεται σε μαρτυρίες ηλικιωμένων. Οι τελευταίοι είναι εξηγούν την δημιουργία ενός προσφυγικού χωριού, της Ν. Λαμψάκου, μέσα από τα δικά τους μάτια. Η διπλωματική εργασία χωρίζεται σε δυο μέρη: Το γραπτό και το πρακτικό μέρος. Το γραπτό μέρος αποτελείται α) από μια βιβλιογραφική ανασκόπηση, όπου συγκεντρώνονται οι ακαδημαϊκές μελέτες που έχουν δημοσιευθεί αναφορικά με τις διαδραστικές ταινίες τεκμηρίωσης (webdoc) και β) από την παρουσίαση της διαδικασία παραγωγής του webdoc ΝΕΑ ΖΩΗ. Το πρακτικό μέρος αποτελείται το webdoc, δημοσιευμένο στο Διαδίκτυο, στην ιστοσελίδα http: lampsakos.com.
description: The present Postgraduate Thesis has been carried out with a twofold purpose: The examination of the online documentaries (webdoc), as a new, rapidly evolving trend in the New Media market, and the creation of an interactive documentary -one of the first made in Greece- applying theory to practice. The research has been enriched with interviews of up-and-coming leaders in the webdoc market, in Greece and abroad. On a practical level, the research for the creation of the webdoc is based on testimonies of the elderly residents of the refugee village N. Lampsakos, who have offered a view into the creation of the village through their own eyes. The Thesis is divided into two sections: Τhe theoretical and the practical one. The theoretical part consists of a bibliographical review of the academic studies which have been published in relation to online interactive documentaries (webdoc), and of the presentation of the ΝΕΑ ZOE (New Life) webdoc production process. The practical part consists of the webdoc, published on the website http:lampsakos.com.
Comment on ''Field-Enhanced Diamagnetism in the Pseudogap State of the Cuprate Bi2Sr2CaCu2O8+δSuperconductor in an Intense Magnetic Field''
Creators: name: Cabo, L.
name: Mosqueira, J.
name: Vidal, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In the above mentioned letter by Wang et al. [Phys. Rev. Lett, 95, 247002 (2005)], magnetization measurements on two Bi_2Sr_2caCu_2O_8+delta samples are reported. They claim that these experimental results support the vortex scenario for the loss of phase coherence at Tc. On the contrary, we show in this comment that they can be explained by means of the Ginzburg Landau theory (under a total-enery cutoff) for the superconducting fluctuations above Tc.
description: Final version
Fixed-point Quantum Search for Different Phase Shifts
Creators: name: Li, D.
name: Li, X.
name: Huang, H.
name: Li, X.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Grover recently presented the fixed-point search algorithm. In this letter, we study the fixed-point search algorithm obtained by replacing equal phase shifts of $π/3$ by different phase shifts.
description: 8 pages
La intervención desde el trabajo social con personas refugiadas. En: Trabajo Social en Escenarios de Vulnerabilidad. Una mirada para la inclusión social. Tirant lo Blanch. P 417-438.
Creators: name: Pérez, Jesús Manuel
name: Acebedo, Esther
Publisher: name: Zenodo
Year: 2022

description: El capítulo forma parte del libro en el que se abordan los conceptos vinculados con la vulnerabilidad y la exclusión social desde una perspectiva multidimensional es clave para la formación en Trabajo Social. El análisis de la vulnerabilidad permite determinar el riesgo al que están sometidas las personas, grupos y/o comunidades que pueda desembocar en una situación de exclusión social. En concreto, este capítulo se centra el el colectivo de las personas refugiadas, sus especiales necesidades y cómo intervenir con ellas desde el Trabajo Social.
Triply-Periodic Smectics
Creators: name: Santangelo, Christian D.
name: Kamien, Randall D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Twist-grain-boundary phases in smectics are the geometrical analogs of the Abrikosov flux lattice in superconductors. At large twist angles, the nonlinear elasticity is important in evaluating their energetics. We analytically construct the height function of a pi/2 twist-grain-boundary phase in smectic-A liquid crystals, known as Schnerk's first surface. This construction, utilizing elliptic functions, allows us to compute the energy of the structure analytically. By identifying a set of heretofore unknown defects along the pitch axis of the structure, we study the necessary topological structure of grain boundaries at other angles, concluding that there exist a set of privileged angles and that the π/2 and π/3 grain boundary structures are particularly simple.
description: 13 pages, 7 figures
Symmetry enriched phases of quantum circuits
Creators: name: Bao, Yimu
name: Choi, Soonwon
name: Altman, Ehud
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum circuits consisting of random unitary gates and subject to local measurements have been shown to undergo a phase transition, tuned by the rate of measurement, from a state with volume-law entanglement to an area-law state. From a broader perspective, these circuits generate a novel ensemble of quantum many-body states at their output. In this paper, we characterize this ensemble and classify the phases that can be established as steady states. Symmetry plays a nonstandard role in that the physical symmetry imposed on the circuit elements does not on its own dictate the possible phases. Instead, it is extended by dynamical symmetries associated with this ensemble to form an enlarged symmetry. Thus, we predict phases that have no equilibrium counterpart and could not have been supported by the physical circuit symmetry alone. We give the following examples. First, we classify the phases of a circuit operating on qubit chains with $\mathbb{Z}_2$ symmetry. One striking prediction, corroborated with numerical simulation, is the existence of distinct volume-law phases in one dimension, which nonetheless support true long-range order. We furthermore argue that owing to the enlarged symmetry, this system can in principle support a topological area-law phase, protected by the combination of the circuit symmetry and a dynamical permutation symmetry. Second, we consider a Gaussian fermionic circuit that only conserves fermion parity. Here the enlarged symmetry gives rise to a $U(1)$ critical phase at moderate measurement rates and a Kosterlitz-Thouless transition to area-law phases. We comment on the interpretation of the different phases in terms of the capacity to encode quantum information. We discuss close analogies to the theory of spin glasses pioneered by Edwards and Anderson as well as crucial differences that stem from the quantum nature of the circuit ensemble.
description: 35 pages, 10 figures, 1 table, accepted to a special issue of Annals of Physics in honor of P. W. Anderson, improved presentation, improved symmetry analysis, expanded appendices, corrected a statement regarding higher replicas
Estimates in corona theorems for some subalgebras of $H^\infty$
Creators: name: Sasane, Amol
name: Treil, Sergei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46J15 (Primary) 30H05, 46J20, 47A25 (Secondary)

description: We obtain estimates in the corona theorem for the algebra of analytic functions in the unit disc whose nth derivative is bounded, and its subalgebras defined by the boundary continuity of the nth derivative. The corona theorem for such algebras is trivial and known, but corona theorem with estimates is new and much harder to prove. As an auxiliary result of independent interest we get the continuity of the best estimate in such algebras (including the classical case of the algebra $H^\infty$ of bounded analytic functions). We also show that for a fixed $n$ the best estimate is the same for all algebras we consider.
description: 24 pages, 1 postscript figure. A preliminary version of this paper is available as LSE report LSE-CDAM-2006-09, see http://www.cdam.lse.ac.uk/Reports/Files/cdam-2006-09.pdf The difference with the preliminary version: minor errors/typos pointed by referee are corrected; connection with earlier work of V. Tolokonnikov is clarified; section 2.5 explaining known facts about Carleson measures is added
Using the Active Collimator and Shield Assembly of an EXIST-Type Mission as a Gamma-Ray Burst Spectrometer
Creators: name: Garson, A.
name: Krawczynski, H.
name: Grindlay, J.
name: Fishman, G. J.
name: Wilson, C. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Energetic X-ray Imaging Survey Telescope (EXIST) is a mission design concept that uses coded masks seen by Cadmium Zinc Telluride (CZT) detectors to register hard X-rays in the energy region from 10 keV to 600 keV. A partially active or fully active anti-coincidence shield/collimator with a total area of between 15 and 35 square meters will be used to define the field of view of the CZT detectors and to suppress the background of cosmic-ray-induced events. In this paper, we describe the use of a sodium activated cesium iodide shield/collimator to detect gamma-ray bursts (GRBs) and to measure their energy spectra in the energy range from 100 keV up to 10 MeV. We use the code GEANT4 to simulate the interactions of photons and cosmic rays with the spacecraft and instrument and the code DETECT2000 to simulate the optical properties of the scintillation detectors. The shield collimator achieves a nu-F-nu sensitivity of 3 x 10^(-9) erg cm^(-2) s^(-1) and 2 x 10^(-8) erg cm^(-2) s^(-1) at 100 keV and 600 keV, respectively. The sensitivity is well matched to that of the coded mask telescope. The broad energy coverage of an EXIST-type mission with active shields will constrain the peak of the spectral energy distribution (SED) for a large number of GRBs. The measurement of the SED peak may be key for determining photometric GRB redshifts and for using GRBs as cosmological probes.
description: 20 pages, 10 Figures, Accepted May 19, 2006 A&A
A Study on Customer Satisfaction Toward More Super Market With Reference to Chennai
Creators: name: Dr.P.Venkatesh, Ms.Atchaya Poorani.S.R
Publisher: name: Zenodo
Year: 2024

description: In the midst of stiff and fierce competition and increased number of grocery retail outlets providing a variety of products, customers have become accustomed to patronizing multiple outlets. Retailers have recognized this trend and are of the view that customer satisfaction plays a role in the success of business strategies. Therefore, it has become important for grocery retail stores to try and manage customer satisfaction. This paper was thus developed to investigate the satisfaction levels of customers in supermarkets. Data was collected from three supermarkets in Visby, Gotland. The study examined the importance of overall dimensions and specific elements of customer satisfaction towards the measurement of satisfaction levels. In addition, comparative analysis was conducted between the three relative grocery stores. Customer satisfaction levels were measured.The highest percentage of customers of the whole sample belonged to medium level of satisfaction. The statistical result concluded that customers of ICA Nära and customers of ICA were higher satisfied than those of Coop Forum. The results showed that customers felt satisfied with Location, Staff courtesy and Reliability of supermarkets as the top aspects that drive satisfaction while additional services were ranked lowest. Due to these results, the impact of these attributes on Customer satisfaction must not be underestimated.
ΟΗΕ και Άτομα με Αναπηρία: Σύμβαση για τα Δικαιώματα των Ατόμων με Αναπηρία και Προαιρετικό Πρωτόκολλο:
Creators: name: Κολωνιάρης, Ζαχαρίας Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014

description: Η εργασία παρουσιάζει και αναλύει τη Σύμβαση του ΟΗΕ για τα Δικαιώματα των Ατόμων με Αναπηρία (ΑμεΑ), η οποία υιοθετήθηκε στις 13 Δεκεμβρίου 2006 από τη Γενική Συνέλευση με την απόφαση 61/611 και τέθηκε σε ισχύ στις 3 Μαΐου 2008. Αρχικά, γίνεται παρουσίαση της κατάστασης και των προβλημάτων που αντιμετωπίζουν τα ΑμεΑ σε καθημερινή βάση, καθώς και της θέσης και εξέλιξης της έννοιας της αναπηρίας στο πλαίσιο των ανθρωπίνων δικαιωμάτων. Έπειτα, γίνεται αναφορά στο καθεστώς προστασίας των δικαιωμάτων των ΑμεΑ πριν από τη θέση σε ισχύ της Σύμβασης, αλλά και στην ανάγκη για τη δημιουργία μιας ειδικής, για την περίπτωση των ΑμεΑ, σύμβασης. Εν συνεχεία, παρουσιάζεται η ιστορική διαδρομή της διαμόρφωσης της Σύμβασης και αναλύεται το περιεχόμενο της, σε επίπεδο δομής, σκοπού, ορισμού της αναπηρίας, γενικών αρχών, υποχρεώσεων των κρατών μερών, δικαιωμάτων και ελευθεριών. Ακολούθως, γίνεται μνεία στους μηχανισμούς εθνικής εφαρμογής και εποπτείας που προβλέπει η Σύμβαση και το Προαιρετικό Πρωτόκολλο σε αυτή, καθώς και στο νομολογιακό έργο της Επιτροπής για τα Δικαιώματα των ΑμεΑ και άλλων θεσμικών οργάνων. Τέλος, εξετάζεται η σημασία της Σύμβασης, καθώς και η δυνατότητα της να επιφέρει την επιθυμητή αλλαγή στις ζωές των ΑμεΑ.
description: This paper presents and analyses the UN Convention on the Rights of Persons with Disabilities (CRPD), adopted on December 13th, 2006 by the General Assembly with Resolution 61/611 and entered into force on the 3rd of May 2008. Firstly, the situation and problems faced by persons with disabilities on a daily basis are presented, as well as the position and evolution of the disability concept, in the context of human rights. Afterwards, the paper refers to the rights protection regime of persons with disabilities, as it appears before the implementation of the Convention, but also to the need of creating a specific, in the case of persons with disabilities, treaty. Thereinafter, the chronological process of the formation of the Convention and the analysis of its content are introduced, in the fields of structure, purpose, definition of disability, general principles, obligations of states parties, rights and freedoms. Next, reference is made to the national implementation and monitoring mechanisms under the Convention and its Optional Protocol, as well as to the case law of the Committee on the Rights of Persons with Disabilities and of other institutions. Finally, the paper examines the importance of the Convention and its ability to bring about the desired change in the lives of persons with disabilities.
Additional file 1 of Host sex disparity and viral genotype dependence of the glycosylation level of small Hepatitis B surface protein in patients with HBeAg-positive chronic Hepatitis B
Creators: name: Ou, Guomin
name: Zhao, Chengyu
name: Deng, Juan
name: Zhuang, Hui
name: Xiang, Kuanhui
name: Li, Tong
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Supplementary Material 1
High Resolution 3D Ultrasonic Breast Imaging by Time-Domain Full Waveform Inversion
Creators: name: Lucka, Felix
name: Pérez-Liva, Mailyn
name: Treeby, Bradley E.
name: Cox, Ben T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Ultrasound tomography (UST) scanners allow quantitative images of the human breast's acoustic properties to be derived with potential applications in screening, diagnosis and therapy planning. Time domain full waveform inversion (TD-FWI) is a promising UST image formation technique that fits the parameter fields of a wave physics model by gradient-based optimization. For high resolution 3D UST, it holds three key challenges: Firstly, its central building block, the computation of the gradient for a single US measurement, has a restrictively large memory footprint. Secondly, this building block needs to be computed for each of the $10^3-10^4$ measurements, resulting in a massive parallel computation usually performed on large computational clusters for days. Lastly, the structure of the underlying optimization problem may result in slow progression of the solver and convergence to a local minimum. In this work, we design and evaluate a comprehensive computational strategy to overcome these challenges: Firstly, we exploit a gradient computation based on time reversal that dramatically reduces the memory footprint at the expense of one additional wave simulation per source. Secondly, we break the dependence on the number of measurements by using source encoding (SE) to compute stochastic gradient estimates. Also we describe a more accurate, TD-specific SE technique with a finer variance control and use a state-of-the-art stochastic LBFGS method. Lastly, we design an efficient TD multi-grid scheme together with preconditioning to speed up the convergence while avoiding local minima. All components are evaluated in extensive numerical proof-of-concept studies simulating a bowl-shaped 3D UST breast scanner prototype. Finally, we demonstrate that their combination allows us to obtain an accurate 442x442x222 voxel image with a resolution of 0.5mm using Matlab on a single GPU within 24h.
Remark on laser linewidth hazard in opto-mechanical cooling
Creators: name: Diósi, Lajos
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: I discuss the robustness of the pumped cavity dynamics against phase diffusion of the laser and conclude that opto-mechanical cooling has extreme sensitivity compared to laser cooling of atoms. Certain proposals of ground state opto-mechanical cooling by single cavity would require an unrealistic sharp laser linewidth or equivalently, a very low level of phase noise. A systematic way to cancel classical excess phase noise is the interferometric twin-cavity pumping, initiated for optically trapped macro-mirrors of future gravitational-wave detectors.
description: 2pp; slightly modified, PRA accepted version
Additional file 1 of Adverse clinical events caused by pacemaker battery depletion: two case reports
Creators: name: Liu, Junpeng
name: Wen, Li
name: Yao, Simin
name: Zheng, Peipei
name: Zhao, Shuang
name: Yang, Jiefu
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Additional file 1.
Constraining a possible time variation of the gravitational constant G with terrestrial nuclear laboratory data
Creators: name: Krastev, P. G.
name: Li, B. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Testing the constancy of the gravitational constant G has been a longstanding fundamental question in natural science. As first suggested by Jofré, Reisenegger and Fernández [1], Dirac's hypothesis of a decreasing gravitational constant $G$ with time due to the expansion of the Universe would induce changes in the composition of neutron stars, causing dissipation and internal heating. Eventually, neutron stars reach their quasi-stationary states where cooling due to neutrino and photon emissions balances the internal heating. The correlation of surface temperatures and radii of some old neutron stars may thus carry useful information about the changing rate of G. Using the density dependence of the nuclear symmetry energy constrained by recent terrestrial laboratory data on isospin diffusion in heavy-ion reactions at intermediate energies and the size of neutron skin in $^{208}Pb$ within the gravitochemical heating formalism, we obtain an upper limit of the relative changing rate of $|\dot{G}/G|\le4\times 10^{-12}yr^{-1}$ consistent with the best available estimates in the literature.
description: 27 pages, 11 figures, and 2 tables. Accepted version to appear in PRC (2007)
Statistical Analysis of Contacts to Synthetic Monolayer MoS2
Creators: name: Kumar, Aravindh
name: Tang, Alvin
name: Wong, H. -S. Philip
name: Saraswat, Krishna
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Two-dimensional (2D) semiconductors are promising candidates for scaled transistors because they are immune to mobility degradation at the monolayer limit. However, sub-10 nm scaling of 2D semiconductors, such as MoS2, is limited by the contact resistance. In this work, we show for the first time a statistical study of Au contacts to chemical vapor deposited monolayer MoS2 using transmission line model (TLM) structures, before and after dielectric encapsulation. We report contact resistance values as low as 330 ohm-um, which is the lowest value reported to date. We further study the effect of Al2O3 encapsulation on variability in contact resistance and other device metrics. Finally, we note some deviations in the TLM model for short-channel devices in the back-gated configuration and discuss possible modifications to improve the model accuracy.
description: 4 pages, 5 figures, to be published in IEEE IITC 2021 conference proceedings; fixed labels in Fig 4(b) and removed blank page at the end
Kamus Sederhana Melayu Deli
Creators: name: Habibah, Fathya Habibah
Publisher: name: Zenodo
Year: 2024
Subjects: bahasa indonesia melayu deli

description: Menjaga dan mengumpulkan kosakata daerah memiliki peran penting dalam melestarikan kekayaan budaya bangsa. Bahasa daerah adalah cerminan identitas dan kearifan lokal yang telah diwariskan dari generasi ke generasi. Dengan merawat kosakata daerah, kita tidak hanya menjaga keberagaman linguistik, tetapi juga mempertahankan nilai-nilai, tradisi, serta pandangan hidup yang terkandung dalam bahasa tersebut. Selain itu, di era globalisasi ini, bahasa daerah terancam punah akibat kurangnya penutur dan dominasi bahasa asing. Oleh karena itu, upaya mengumpulkan kosakata daerah penting untuk mendokumentasikan serta mewariskannya kepada generasi mendatang agar budaya lokal tetap hidup dan berdaya.

Oleh karena itu, penulis ingin membuat Kamus Sederhana bahasa Melayu Deli sebagai upaya memperkenalkan kekayaan bahasa daerah yang terdapat di Indonesia khususnya wilayah Medan Deli, Sumatera Utara. Adanya kamus sederhana ini diharapkan dapat memperkaya wawasan dalam memahami kebudayaan masyarakat umum khususnya Melayu Deli.
Silicon detectors: damage, modelling and expected long-time behaviour in physics experiments at ultra high energy
Creators: name: Lazanu, Ionel
name: Lazanu, Sorina
Publisher: name: arXiv
Year: 2006
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this contribution, the structural modifications of the material and the degradation of devices is modelled and compared with experimental data for more resistivities, temperatures, crystal orientations and oxygen concentrations, considering the existence of the new primary fourfold coordinated defect, besides the vacancy and the interstitial. Some estimations of the behaviour of detectors in concrete environments at the next generations of high energy physics experiments as LHC, SLHC, VLHC, or ULHC are done.
description: X-th Pisa Meeting on Advanced Detectors, May 21-27, 2006, La Biodola, Isola d'Elba (Italy), to be published in Nuclear Instruments and Methods in Physics Research A
Harmonic generation in the interaction of laser with a magnetized overdense plasma
Creators: name: Maity, Srimanta
name: Mandal, Devshree
name: Vashistha, Ayushi
name: Goswami, Laxman Prasad
name: Das, Amita
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The mechanism of harmonic generation in both O and X-mode configurations for a magnetized plasma has been explored here in detail with the help of Particle-In-Cell (PIC) simulations. A detailed characterization of both the reflected and transmitted electromagnetic radiation propagating in the bulk of the plasma has been carried out for this purpose. The efficiency of harmonic generation is shown to increase with the incident laser intensity. Dependency of harmonic efficiency has also been found on magnetic field strength. This work demonstrates that there is an optimum value of the magnetic field at which the efficiency of harmonic generation maximizes. The observations are in agreement with theoretical analysis. For O-mode configuration, this is compelling as the harmonic generation provides for a mechanism by which laser energy can propagate inside an overdense plasma region.
description: 16 pages, 12 figures (Accepted in Journal of Plasma Physics)
Ολοκληρωτικοί τελεστές σε συμμετρικούς χώρους βαθμίδας ένα.:
Creators: name: Αϋφαντή, Αθηνά Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2013
Subjects: subject: Μαθηματικά
subject: Θεσσαλονίκη
subject: Θεωρητικά Μαθηματικά
subject: Mathematics
subject: FOS: Mathematics
subject: Thessaloniki
subject: Pure Mathematics

description: Η παρούσα διπλωματική εργασία μελετά τους oλοκληρωτικούς τελεστές των κυμάτων στον Ευκλείδειο χώρο και αποδεικνύει την συνέχεια τους. Ορίζονται οι συμμετρικοί χώροι και παρουσιάζεται το αντίστοιχο πρόβλημα και η λύση του,που είναι το Θεώρημα D,για τους φραγμένους τελεστές των κυμάτων στους συμμετρικούς χώρους τάξης ένα. Παρουσιάζεται η γεωμετρία των συμμετρικών χώρων και ο σφαιρικός μετασχηματισμος Fourier-η συνάρτηση Hαrish-Chαndrα και οι ιδιότητες τους. Παρουσιάζεται ο χώρος των συναρτήσεων φραγμένης μέσης κύμανσης και ο «τοπικός» χώρος των συναρτήσεων φραγμένης μέσης κύμανσης . Παρουσιάζονται και αποδεικνύονται η πρόταση και τα λήμματα που θα χρειαστούν για την απόδειξη του Θεωρήματος D. Επιπλέον παρουσιάζεται το θεώρημα της αναλυτικής παρεμβολής. Τέλος παρουσιάζονται και αποδεικνύονται οι προτάσεις για τους πολλαπλασιαστές και τους τελεστές που αντιστοιχούν στους πολλαπλασιαστές,που ολοκληρώνουν την απόδειξη του Θεωρήματος D.
description: This thesis studies the integral wave operators in Euclidean space and proves their continuity. The symmetric spaces are defined and the corresponding problem and its solution are presented, which is the Theorem D,for bounded operators of waves on symmetric spaces of real rank one. The geometry of symmetric spaces and Fourier spherical transform-the Harish-Chandra function and their properties are presented . The space of functions of bounded mean oscillation and the “local” space of functions of bounded mean oscillation are presented. The proposition and lemma will be needed for the proof of Theorem D are presented. In addition it is presented the theorem of analytic interpolation. In the end, it is presented and proved the propositions for the multipliers and the operators that correspond to multipliers,which completes the proof of theorem D.
2017 Commonwealth Fund International Health Policy Survey of Older Adults
Creators: name: Commonwealth Fund
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Satisfaction with quality of health care (1); skipping health care due to cost (4); access to health care (2); source of medical care (2); quality of experiences with regular doctor (6); number of different doctors seen in past 12 months (1); coordination of care (6); specialists (4); prescription medications (4); hospital visits (9); health status/health-related experiences (25); health risks (6); emotional distress (2); planning for future health needs (3); health insurance/coverage (7); concerns about being able to afford basic necessities (3); out-of-pocket costs (2).
Zeeman splitting of interacting two-dimensional electrons with two effective masses
Creators: name: Vakili, K.
name: Tutuc, E.
name: Shayegan, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have realized an AlAs two-dimensional electron system in which electrons occupy conduction-band valleys with different Fermi contours and effective masses. In the quantum Hall regime, we observe both resistivity spikes and persistent gaps at crossings between the Landau levels originating from these two valleys. From the positions of the spikes in tilted magnetic field and measurements of the energy gaps away from the crossings, we find that, after occupation of the minority valley, the spin susceptibility drops rapidly, and the electrons possess a {\it single} interaction-enhanced g-factor, despite the dissimilarity of the two occupied valleys.
description: 4 pages, 3 figures, submitted for publication