cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optical feeder links for high throughput satellites and the H2020 VERTIGO project
Creators: name: Le Kernec, A.
name: Canuet, L.
name: Maho, A.
name: Sotom, M.
name: Matter, D.
name: Francou, L.
Publisher: name: Proceedings of the COAT-2019 Workshop (Communications and Observations through Atmospheric Turbulence: characterization and mitigation). Châtillon, France, 2-3 december 2019
Year: 2019
Subjects: OPTICAL FEEDER LINKS
TELECOM SATELLITE SYSTEMS
ADAPTIVE OPTICS
HIGH OPTICAL POWER GENERATION
CHANNEL CODING

description: The demand from satellite operators for ever increasing capacity during these years has led to the emergence of VHTS (Very High Throughput Satellites) system solutions. Such satellites exhibit as a minimum several times the capacity of conventional satellites and possibly up to Terabit per second and beyond. One of the main challenges associated to the implementation of these very high capacity systems is to feed the satellite in an efficient way to limit the cost of the system, in particular that of the ground segment. While RF bands are facing saturation and are submitted to strict frequency regulation, leading to a large number of ground stations, optical feeder links are considered as a promising technology to meet the future VHTS system requirements while strongly reducing the ground segment. Nevertheless, optical feeder links are still facing some implementation uncertainties, beyond the obvious issue of nebulosity which can be alleviated through site diversity approach. While several feeder link architectures are envisaged leading to significant implementation differences, atmospheric propagation impairments and their mitigation techniques together with high power generation and management as well as efficient modulation use are of primary importance in the design and sizing of the optical feeder link. During past years several experimentations on ground or in-flight have demonstrated part of these concepts and subsystems necessary to implement such high capacity systems. Simultaneous combination of all these concepts in comprehensive demonstrations has however not been implemented yet. This paper recalls the main drivers of satellite systems design based on optical feeder links and introduces the H2020 VERTIGO project that is specifically addressing the topic of the GEO-ground optical link and the associated technological challenges (high optical power generation, high efficiency waveforms, atmospheric impairments mitigation techniques).
New non-validated practice: an enhanced definition of innovative practice for medicine (work in progress)
Creators: name: Mastroleo, Ignacio
name: Holzer, Felicitas
Publisher: name: Zenodo
Year: 2019
Subjects: Innovative practice
Right to try laws

description: Innovative practice usually relates to seizing opportunities and curbing harms for patients in desperate situations and the ethical dilemmas around it. Sadly, the term innovation has multiple meanings, adding confusion and misunderstanding to an already difficult debate. This presentation aims to enhance the definition of innovative practice in two ways. First, we propose to curb ambiguity by replacing the term "innovative practice" with the more precise term of "new non-validated practice" and by distinguishing the specific meaning of innovation at stake. To identify this meaning, we analyse the traditional research ethics’ distinction between research, validated practice, and innovation. Second, we propose the following unified definition of "new non-validated practice", that is, the first or recent use of diagnostic, therapeutic or preventive interventions that introduce a significant change (new); with an insufficient level of evidence of safety or efficacy for regular healthcare (non-validated); and with the main aim to benefit patients (practice). To avoid objections to our definition, we analyse its three core elements (significant novelty, insufficient validation for, and patients' best interests) and we present a 2D classification of medical practice that follows from our definition. If sound, our enhanced definition of "new non-validated practice" allows comparing exceptional activities in different fields of medicine that previously have been considered unconnected (e.g. compassionate use of investigational drugs, humanitarian uses of devices, novel off-label uses, etc.). In turn, it also provides a promising conceptual tool to inform empirical research, discuss responsible access to innovative care and evaluate the regulation of innovative practice (e.g. right-to-try laws).
Integrable Models and Confinement in (2+1)-Dimensional Weakly-Coupled Yang-Mills Theory
Creators: name: Orland, Peter
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We generalize the (2+1)-dimensional Yang-Mills theory to an anisotropic form with two gauge coupling constants $e$ and $e^{\prime}$. In an axial gauge, a regularized version of the Hamiltonian of this gauge theory is $H_{0}+{e^{\prime}}^{2}H_{1}$, where $H_{0}$ is the Hamiltonian of a set of (1+1)-dimensional principal chiral nonlinear sigma models. We treat $H_{1}$ as the interaction Hamiltonian. For gauge group SU(2), we use form factors of the currents of the principal chiral sigma models to compute the string tension for small $e^{\prime}$, after reviewing exact S-matrix and form-factor methods. In the anisotropic regime, the dependence of the string tension on the coupling constant is not in accord with generally-accepted dimensional arguments.
description: Now 37 pages, Section 5 moved to an appendix, more motivation given in the introduction, a few more typos corrected
Additional file 1 of Optimal statin use for prevention of sepsis in type 2 diabetes mellitus
Creators: name: Sun, Mingyang
name: Tao, Yuan
name: Chen, Wan-Ming
name: Wu, Szu-Yuan
name: Zhang, Jiaqiang
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Table S1. Transformation of the optimal DDD (lowest hazard ratio of sepsis) to daily milligram recommendations among different statins therapy. Table S2. Septic shock risk and adjusted hazard ratios (aHRs) associated with statin use among patients with T2DM. Figure S1. Kaplan–Meier analysis of the cumulative curves of sepsis for statin users and nonusers among patients with T2DM. Figure S2. Intensity of statin use (DDD) and the hazard ratio of sepsis. Figure S3. Study flow-chart.
Cryptolestes turcicus
Creators: name: Majka, Christopher G.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Laemophloeidae
Cryptolestes
Cryptolestes turcicus

description: Cryptolestes turcicus (Grouvelle, 1876) NOVA SCOTIA: Halifax Co.: Dartmouth, 25.XI.1986, D.S. Davies, (17, NSMC); Halifax, 15.IX.2004, K. Batherson, flour warehouse, (5, NSMC). Cryptolestes turcicus is newly recorded in Atlantic Canada. Th is cosmopolitan species is found in feed and flour mills, grain elevators, and warehouses where it feeds on fungi growing on damaged grains (Bousquet 1990).
description: Published as part of Majka, Christopher G., 2008, The flat bark beetles (Coleoptera, Silvanidae, Cucujidae, Laemophloeidae) of Atlantic Canada, pp. 221-238 in ZooKeys 2 (2) on pages 229-230, DOI: 10.3897/zookeys.2.14, http://zenodo.org/record/576402
description: {"references": ["Bousquet Y (1990) Beetles associated with stored products in Canada: an identification guide. Agriculture Canada Publication 1837: 1 - 215"]}
Spatial patterns of home renovation in Nova Scotia, 1971-1988
Creators: name: Bruce, David
Publisher: name: University of British Columbia
Year: 2010

description: Nova Scotia has a high percentage of homes which were built before 1946, as well as a high percentage of homes in need of repair relative to other provinces. The thesis addresses four major issues in light of these problems. First, how many Nova Scotians are renovating their homes, and how does this change over time? Second, what is the distribution of renovation across the province in settlements of different sizes? Third, what are the characteristics of renovators in Nova Scotia? Fourth, how has the involvement of the government, through funding assistance, affected the renovation process in Nova Scotia? Drawing on building permit activity, it was found that renovation is not increasing significantly across the province, with more activity occurring in urban and small town areas than in rural areas. Using census material and both published and unpublished data from an independent renovation survey, comparison of the characteristics of renovators and non-renovators are examined. Renovation in the Metro region is more closely associated with higher social status and financial security, while in rural areas virtually no characteristics stand out. Renovation touches many different types of households. The government programs at both the federal and provincial level were found to be well targeted to those areas in greatest need, and indeed the infusion of funds made a significant impact in encouraging households which might not otherwise renovate to do so.
A Hardware Implementation of Artificial Neural Network Using Field Programmable Gate Arrays
Creators: name: Won, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: An artificial neural network algorithm is implemented using a field programmable gate array hardware. One hidden layer is used in the feed-forward neural network structure in order to discriminate one class of patterns from the other class in real time. With five 8-bit input patterns, six hidden nodes, and one 8-bit output, the implemented hardware neural network makes decision on a set of input patterns in 11 clocks and the result is identical to what to expect from off-line computation. This implementation may be used in level 1 hardware triggers in high energy physics experiments
description: 13 pages, 4 figures, submitted to Nucl. Instr. Meth. A
Protection schemes for optical communication between optical ground station and a satellite
Creators: name: Poulenard, Sylvain
name: Gadat, Benjamin
name: Barthe, Lyonel
name: Garzon-Bohorquez, Ronald
Publisher: name: Proceedings of the COAT-2019 Workshop (Communications and Observations through Atmospheric Turbulence: characterization and mitigation). Châtillon, France, 2-3 december 2019
Year: 2019
Subjects: OPTICAL COMMUNICATIONS
OPTICAL SATELLITE FEEDER LINK
FORWARD ERROR CODES

description: Forward Error correcting Code design (FEC) and implementation for optical feeder link is reported. The designed LDPC codes present very good performances (BER 1e-9) while requiring less than 20% hardware resources of FPGA compatible with space constraints. Protection scheme based on these LDPC codes combined with a physical layer bit interleaver is presented. Links sizing for GEO optical feeder link at 30 elevation angle under strong turbulence shows that uplink might require up to 100W per link.
Laemophloeus biguttatus
Creators: name: Majka, Christopher G.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Laemophloeidae
Laemophloeus
Laemophloeus biguttatus

description: Laemophloeus biguttatus (Say, 1825) Laemophloeus biguttatus is widely distributed in New Brunswick, Newfoundland, Nova Scotia, and Prince Edward Island (Bousquet 1991) (Fig. 2). Th ey are found under the bark of trees where they feed on ascomycete fungi such as Hypoxylon prob. atropunctatum (Schweinitz ex Fries) Cooke (Th omas 1993). In Nova Scotia it has been collected in coniferous and mixed forests on both red maple (Acer rubrum L., Aceraceae) and red oak (Quercus rubra L., Fagaceae).
description: Published as part of Majka, Christopher G., 2008, The flat bark beetles (Coleoptera, Silvanidae, Cucujidae, Laemophloeidae) of Atlantic Canada, pp. 221-238 in ZooKeys 2 (2) on page 230, DOI: 10.3897/zookeys.2.14, http://zenodo.org/record/576402
description: {"references": ["Bousquet Y (1991) Family Cucujidae: flat bark beetles. In: Bousquet Y (Ed) Checklist of Beetles of Canada and Alaska. Agriculture Canada Publication 1861 / E: 219 - 220."]}
Wave-front Aberrations of Laser Beams Propagating through the Atmosphere
Creators: name: Anilmis Baci, Nurdan
name: Yeniay, Aydin
Publisher: name: Proceedings of the COAT-2019 Workshop (Communications and Observations through Atmospheric Turbulence: characterization and mitigation). Châtillon, France, 2-3 december 2019
Year: 2019
Subjects: ATMOSPHERIC TURBULENCE
WAVE-FRONT ABERRATIONS
LASER BEAM PROPAGATION

description: Small temperature variations carried by the turbulent velocity field in the Earths atmosphere produce small phase perturbations in laser beam propagating through it. Perturbations in the phase cause wave-front errors and may significantly decrease the Strehl ratio of the laser beam. For compensation of atmospheric distortions, adaptive optics systems are used. Before the design of any adaptive optics system, the simulation of the atmospherically distorted laser beam is important. In this work, we describe the purpose, theory, implementation, and results of a wave optics propagation simulation code LAtmoSim and we investigate the effect of laser system parameters on the degree of the wave-front error caused by turbulence.
Multiple Jets from the High-Mass (Proto)stellar Cluster AFGL5142
Creators: name: Zhang, Qizhou
name: Hunter, Todd R.
name: Beuther, H.
name: Sridharan, T. K.
name: Liu, S. -Y.
name: Su, Y. -N.
name: Chen, H. -R.
name: Che, Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present studies of a massive protocluster AFGL5142 in the J=2-1 transition of the CO isotopologues, SO, CH_3OH and CH_3CN lines, as well as continuum at 225 GHz and 8.4 GHz. The 225 GHz continuum emission reveals three prominent peaks MM-1, MM-2 and MM-3. MM-1 and MM-2 are associated with strong CH_3CN emission with temperatures of 90 \pm 20 and 250 \pm 40 K, respectively, while both MM-1 and MM-3 are associated with faint continuum emission at 8.4 GHz. Additional dust continuum peaks MM-4 and MM-5 appear to be associated with \h2O masers. With many continuum sources at cm and mm wavelengths, and those already identified in the infrared, this region is forming a cluster of stars. The CO and SO emission reveals at least three molecular outflows originating from the center of the dust core. The outflows are well collimated, with terminal velocities up to 50 \kms-1 from the cloud velocity. Outflow A coincides with the SiO jet identified previously by Hunter et al. (1999). Since jet-like outflows and disk-mediated accretion process are physically connected, the well collimated outflows indicate that even in this cluster environment, accretion is responsible for the formation of individual stars in the cluster.
description: Accepted for publication in ApJ
Mito e letteratura : il romanzo sociale e lo scrittore borghese nella prima metà dell'Ottocento italiano
Creators: name: Binetti, Vincenzo Antonio
Publisher: name: University of British Columbia
Year: 2010

description: L'obiettivo che qui ci si propone, è quello di cercare di delineare le caratteristiche essenziali di un genere letterario nuovo, il romanzo sociale, attraverso l'analisi particolareggiata di alcuni scrittori 'impegnati' della prima metà dell'Ottocento. II presente lavoro esaminerà, quindi, l'evolversi complesso e, a volte, contraddittorio, di questo prodotto letterario che, nonostante i suoi limiti artistici, si inserì - sulle orme del romanzo storico - nella vicenda culturale del momento, ne assorbì comuni caratteristiche sociali, didascaliche e ideologiche, fino a diventarne un fatto a sè, identificabile e isolabile di notevole interesse. In un clima storico-politico così particolare, quale quello dell'Italia romantica pre-unitaria, la vicenda culturale e letteraria del romanzo sociale rappresentò, infatti, per gli scrittori borghesi del periodo, il mezzo espressivo ideale, attraverso cui poter manifestare le proprie opinioni politiche ed artistiche nei confronti di un pubblico nuovo, di volta in volta da 'educare' o da controllare, da 'guidare' o da reprimere. All1internò della polemica romantica si cercherà di definire, appunto, questo rapporto complesso e difficile tra scrittore e destinatario del prodotto artistico, attraverso l'analisi di espressioni diverse dello stesso filone di questa letteratura 'impegnata': il romanzo sociale di G. Carcano e A. Ranieri, il romanzo rusticale di C. Percoto e C. Ravizza, il romanzo filantropico di G. Longoni e F. Dall'Ongaro. Nella parte conclusiva di questo saggio si tenterà di collocare il romanzo 'impegnato' all'interno di un preciso contesto socio-politico-culturale e letterario, per cercare di determinare, infine, le prospettive di sviluppo di questo genere e le sue eventuali responsabilità nella formazione delle basi essenziali di quelle che sarebbero state, poi, le successive istanze veriste.
Amplified biochemical oscillations in cellular systems
Creators: name: McKane, A. J.
name: Nagy, J. D.
name: Newman, T. J.
name: Stefanini, M. O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We describe a mechanism for pronounced biochemical oscillations, relevant to microscopic systems, such as the intracellular environment. This mechanism operates for reaction schemes which, when modeled using deterministic rate equations, fail to exhibit oscillations for any values of rate constants. The mechanism relies on amplification of the underlying stochasticity of reaction kinetics within a narrow window of frequencies. This amplification allows fluctuations to beat the central limit theorem, having a dominant effect even though the number of molecules in the system is relatively large. The mechanism is quantitatively studied within simple models of self-regulatory gene expression, and glycolytic oscillations.
description: 35 pages, 6 figures
Coupling of atmospheric perturbed optical beams with guided modes of propagation
Creators: name: Rinaldi, Luca
name: Michau, Vincent
name: Boutillier, Mathieu
Publisher: name: Proceedings of the COAT-2019 Workshop (Communications and Observations through Atmospheric Turbulence: characterization and mitigation). Châtillon, France, 2-3 december 2019
Year: 2019
Subjects: ADAPTIVE OPTICS
LAGUERRE-GAUSSIAN MODES
FREE-SPACE OPTICAL COMMUNICATIONS
ATMOSPHERIC TURBULENCE

description: Optical satellite-to-ground communications are disrupted by the effects of atmospheric turbulence which causes scintillation and phase distortion. By correcting the wave phase perturbations, adaptive optics allows the beam to be coupled into a single-mode optical fiber at reception with minimal fading. When the satellite is close to zenith, the scintillation rate is a few percent: conventional adaptive optics techniques are well suited. On the other hand, when the satellite elevation is low, the scintillation is high and conventional wavefront measurement techniques are no longer usable. We propose here a new approach to couple an incoming beam disturbed by turbulence with a set of propagation modes representative of a spatial multiplexer, including in the case of strong scintillation. We illustrate our approach by considering the case of the Laguerre-Gauss modes.
Laemophloeus fasciatus Melsheimer 1846
Creators: name: Majka, Christopher G.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Laemophloeidae
Laemophloeus
Laemophloeus fasciatus

description: Laemophloeus fasciatus Melsheimer, 1846 NEW BRUNSWICK: York Co.: New Maryland, 20.VI.2003, R.P. Webster, mixed forest, at light, (1, RWC). NOVA SCOTIA: Cape Breton Co.: George’s River, 15.VI.2000, D.B. McCorquodale, (1, CBU); Cumberland Co.: Oxford, 14.VI.1988, 17.VI.1988, 7.VII.1988, 19.IX.1988, E. Georgeson, UV light rap, (4, NSMC); Halifax Co.: Dartmouth, 29.VIII.1990, S. Marr, (1, NSMC); Halifax, 24.IX.1991, E. Boutilier, (3, NSMC); Halifax, 3.X.1991, S. Harrie, (1, NSMC); Hubbards, 3.X.1989, J. Barkhouse, (1, NSMC); Hants Co.: Panuke Lake, 2-15.VI.1997, D.J. Bishop, old growth eastern hemlock-red spruce forest, flight-intercept trap, (1, NSMC); Kings Co.: Kentville, 3.VIII.1998, D.H. Webster, on basswood, (1, DHWC); Lunenburg Co.: 19.VI.1965, B. Wright, (1, NSMC); Queens Co.: Medway River, 13.VII.1993, J. & T. Cook, car net, (2, JCC). Laemophloeus fasciatus is newly recorded in Atlantic Canada (Fig. 1). It is found under bark (Th omas 1993). In Atlantic Canada it has been collected in coniferous and mixed forests and has been found on basswood (Tilia europea L., Tiliaceae).
description: Published as part of Majka, Christopher G., 2008, The flat bark beetles (Coleoptera, Silvanidae, Cucujidae, Laemophloeidae) of Atlantic Canada, pp. 221-238 in ZooKeys 2 (2) on page 230, DOI: 10.3897/zookeys.2.14, http://zenodo.org/record/576402
The Dirac propagator in the extreme Kerr metric
Creators: name: Batic, D.
name: Schmid, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Starting with the Dirac equation in the extreme Kerr metric we derive an integral representation for the propagator of solutions of the Cauchy problem with initial data in the class of smooth compactly supported functions.
description: 9 pages, one more reference added
Categories covered by the protection of international humanitarian law
Creators: name: Magdy, Merna
Publisher: name: figshare
Year: 2021
Subjects: Uncategorized

description: Due to the large number of violent incidents and turmoil in the Middle East and the presence of armed groups and their conduct of hostilities, which led to the presence of many refugees from countries that have unrest within many other countries, including the Arab Republic of Egypt, and since they are among the protected groups and that Egypt has signed There are many treaties regarding human rights and the Geneva treaties, in addition to the occurrence of some of these disturbances within the Egyptian country, which raises the problem of the absence of an internal law for the country to protect these groups and organize these events, since the constitution stipulates Egypt’s commitment to these international treaties
Global Existence and Uniqueness of Solutions to the Maxwell-Schr{ö}dinger Equations
Creators: name: Nakamura, Makoto
name: Wada, Takeshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q40 ; 35Q55 ; 35L70

description: The time local and global well-posedness for the Maxwell-Schr{ö}dinger equations is considered in Sobolev spaces in three spatial dimensions. The Strichartz estimates of Koch and Tzvetkov type are used for obtaining the solutions in the Sobolev spaces of low regularities. One of the main results is that the solutions exist time globally for large data.
description: 30 pages. In the revised version, the following modification was made. (1) A line for dedication was added in the first page. (2) Some lines were added at the bottom in page 4 and the top in page 5 in the first section to make the description accurate. (3) Some typographical errors were corrected throughout the paper
Is it possible to observationally distinguish adiabatic Quartessence from LambdaCDM?
Creators: name: Amendola, L.
name: Makler, M.
name: Reis, R. R. R.
name: Waga, I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The equation of state (EOS) in quartessence models interpolates between two stages: $p\simeq 0$ at high energy densities and $p\approx -ρ$ at small ones. In the quartessence models analyzed up to now, the EOS is convex, implying increasing adiabatic sound speed ($c_{s}^{2}$) as the energy density decreases in an expanding Universe. A non-negligible $c_{s}^{2}$ at recent times is the source of the matter power spectrum problem that plagued all convex (non-silent) quartessence models. Viability for these cosmologies is only possible in the limit of almost perfect mimicry to $Λ$CDM. In this work we investigate if similarity to $Λ$CDM is also required in the class of quartessence models whose EOS changes concavity as the Universe evolves. We focus our analysis in the simple case in which the EOS has a step-like shape, such that at very early times $p\simeq0$, and at late times $p\simeq const<0$. For this class of models a non-negligible $c_{s}^{2}$ is a transient phenomenon, and could be relevant only at a more early epoch. We show that agreement with a large set of cosmological data requires that the transition between these two asymptotic states would have occurred at high redshift ($z_t\gtrsim38$). This leads us to conjecture that the cosmic expansion history of any successful non-silent quartessence is (practically) identical to the $Λ$CDM one.
description: 5 pages, 7 figures, revised version to appear in PRD
Supplementary document for Rapid quantitative analysis of calcium in infant formula powder assisted by long short-term memory with variable importance using laser-induced breakdown spectroscopy - 6299387.pdf
Creators: name: Ding, Yu
name: Yang, linyu
name: Chen, Wenjie
name: Chen, Jing
name: Zhao, Xingqiang
name: Luo, Yong
name: Zhou, Wangping
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplementary figures and tables
Probabilistic validation of homology computations for nodal domains
Creators: name: Mischaikow, Konstantin
name: Wanner, Thomas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G60, 55N99, 60G15, 60G17 (Primary)

description: Homology has long been accepted as an important computable tool for quantifying complex structures. In many applications, these structures arise as nodal domains of real-valued functions and are therefore amenable only to a numerical study based on suitable discretizations. Such an approach immediately raises the question of how accurate the resulting homology computations are. In this paper, we present a probabilistic approach to quantifying the validity of homology computations for nodal domains of random fields in one and two space dimensions, which furnishes explicit probabilistic a priori bounds for the suitability of certain discretization sizes. We illustrate our results for the special cases of random periodic fields and random trigonometric polynomials.
description: Published at http://dx.doi.org/10.1214/105051607000000050 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Using event cameras for imaging through atmospheric turbulence
Creators: name: Boehrer, Nicolas
name: Nieuwenhuizen, Robert
name: Dijk, Judith
Publisher: name: Proceedings of the COAT-2019 Workshop (Communications and Observations through Atmospheric Turbulence: characterization and mitigation). Châtillon, France, 2-3 december 2019
Year: 2019
Subjects: NEUROMORPHIC SENSORS
EVENT CAMERAS
ANISOPLANATIC TURBULENCE
IMAGE RECONSTRUCTION

description: Long range horizontal path imaging through atmospheric turbulence is hampered by spatiotemporally randomly varying shifting and blurring of scene points in recorded imagery. Typical mitigation strategies employ software algorithms that combine optical flow to estimate and reduce tip/tilt aberrations with lucky patch identification and data fusion to filter higher order aberrations. In practice, accurate and fast optical flow estimation in turbulence faces is highly challenging. Here we investigate if these challenges can be overcome by using a neuromorphic camera. These sensors measure logarithmic changes in scene radiance in each pixel instead of the radiance itself. The changes are thresholded to produce a stream of events, which enables an ultrafast time resolution on the order of microseconds and enables efficient optical flow estimation at very high frame rates. Here we report on our initial experiments, where we have used a neuromorphic camera to image through turbulence in a controlled indoor setting. We analyze how the sensor responds to the turbulence induced apparent scene motion and propose an algorithm for computing high resolution images of the scene from the event stream in combination with intensity frames. Our initial results do not show a statistical relation between event counts and lucky patches. The image reconstruction based on the event stream did show promising improvements in output image sharpness and stability compared to the raw image stream, with many opportunities for further improvement.
Effects of brane-flux transition on black holes in string theory
Creators: name: Loaiza-Brito, Oscar
name: Oda, Kin-ya
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Extremal N=2 black holes in four dimensions can be described by an ensemble of D3-branes wrapped on internal supersymmetric three-cycles of Calabi-Yau threefolds on which type IIB superstring theory is compactified. We construct a similar configuration, with extra RR and NS-NS three-form fluxes being turned on. We can avoid the Freed-Witten anomaly on the D3-branes by enforcing the pullback of these extra fluxes to the D3-branes to vanish at the classical level. In the setup the D3-brane charge is not conserved since it is classified as a trivial class in twisted K-theory. Consequently, the D3-branes may disappear by encountering an instantonic D5-brane localized in time. We discuss what happens on the black hole described by such disappearing D3-branes, relying mainly on topological arguments. Especially, we argue that another RR three-form flux will be left as a lump of remnant which is localized in the uncompactified four-dimensional space-time and that it may carry the same amount of degrees of freedom to describe a black hole, in cooperation with the original NS-NS flux, after this transition of the D3-branes.
description: Version appearing in JHEP, minor corrections, reference added, some points clarified (v3); References added, extra RR flux turned on in the initial setup to assure N=2 supersymmtry, explanations added, conclusions unchanged (v2); 18pages, 1 figure (v1)
Fitting an error distribution in some heteroscedastic time series models
Creators: name: Koul, Hira L.
name: Ling, Shiqing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62F05, 62M10 (Primary) 60G10 (Secondary)

description: This paper addresses the problem of fitting a known distribution to the innovation distribution in a class of stationary and ergodic time series models. The asymptotic null distribution of the usual Kolmogorov--Smirnov test based on the residuals generally depends on the underlying model parameters and the error distribution. To overcome the dependence on the underlying model parameters, we propose that tests be based on a vector of certain weighted residual empirical processes. Under the null hypothesis and under minimal moment conditions, this vector of processes is shown to converge weakly to a vector of independent copies of a Gaussian process whose covariance function depends only on the fitted distribution and not on the model. Under certain local alternatives, the proposed test is shown to have nontrivial asymptotic power. The Monte Carlo critical values of this test are tabulated when fitting standard normal and double exponential distributions. The results obtained are shown to be applicable to GARCH and ARMA--GARCH models, the often used models in econometrics and finance. A simulation study shows that the test has satisfactory size and power for finite samples at these models. The paper also contains an asymptotic uniform expansion result for a general weighted residual empirical process useful in heteroscedastic models under minimal moment conditions, a result of independent interest.
description: Published at http://dx.doi.org/10.1214/009053606000000191 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Hawking-Unruh effect and the entanglement of two-mode squeezed states in Riemannian spacetime
Creators: name: Ahn, D.
name: Kim, M. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the system of free scalar field, which is assumed to be a two-mode squeezed state from an inertial point of view. This setting allows the use of entanglement measure for continuous variables, which can be applied to discuss free and bound entanglement from the point of view from non-inertial observer.
description: Phys. Lett. A, accepted for publication
Charaphloeus adustus
Creators: name: Majka, Christopher G.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Laemophloeidae
Charaphloeus
Charaphloeus adustus

description: Charaphloeus adustus (LeConte, 1854) Charaphloeus adustus was reported from Nova Scotia by Bousquet (1991). Subsequent examination of the specimen in the CNC has established that it is actually C. convexulus. Consequently this species is removed from the faunal list of Nova Scotia.
description: Published as part of Majka, Christopher G., 2008, The flat bark beetles (Coleoptera, Silvanidae, Cucujidae, Laemophloeidae) of Atlantic Canada, pp. 221-238 in ZooKeys 2 (2) on page 230, DOI: 10.3897/zookeys.2.14, http://zenodo.org/record/576402
description: {"references": ["LeConte JL (1854) Synopsis of the Cucuiides of the United States. Proceedings of the Academy of Natural Sciences of Philadelphia 7: 73 - 79.", "Bousquet Y (1991) Family Cucujidae: flat bark beetles. In: Bousquet Y (Ed) Checklist of Beetles of Canada and Alaska. Agriculture Canada Publication 1861 / E: 219 - 220."]}
Improving Tape Restore Request Scheduling in the Storage System dCache
Creators: name: Morschel, Lea
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2020

description: Bachelorarbeit, FH Wedel, 2020; 74 pages (2020). doi:10.3204/PUBDB-2020-01394 = Bachelorarbeit, FH Wedel, 2020
description: This thesis aims to improve the data recall efficiency from magnetic tape to disk by optimizing the request scheduling within the scientific disk storage system dCache. It is written in the context of the future data management challenges by the ATLAS experiment, where the high luminosity configuration will require an order of magnitude more storage capacity than can be provided by the current funding and usage model. A concept called data carousel is being investigated by the ATLAS collaboration, which aims to realize the active yet efficient usage of tape storage. Established components in the data management chain such as dCache are aimed to be adapted to efficiently support this altered workflow.In the context of this thesis, the current request scheduling within dCache is evaluated, the problem formalized and analyzed with regard to finding an optimal solution. A solution is proposed and discussed. Due to the complexity of the system chain and resulting behavior, which is not easily subjected to experimentation, a tape system simulator is developed, dCache modeled as a requestor thereof. The proposed dCache request scheduling algorithms are then tested in this environment according to defined criteria, the results evaluated. It is shown that the proposed solution is capable of significantly improving the metrics of interest in different setups.
Objective probability and quantum fuzziness
Creators: name: Mohrhoff, Ulrich
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper offers a critique of the Bayesian interpretation of quantum mechanics with particular focus on a paper by Caves, Fuchs, and Schack containing a critique of the "objective preparations view" or OPV. It also aims to carry the discussion beyond the hardened positions of Bayesians and proponents of the OPV. Several claims made by Caves et al. are rebutted, including the claim that different pure states may legitimately be assigned to the same system at the same time, and the claim that the quantum nature of a preparation device cannot legitimately be ignored. Both Bayesians and proponents of the OPV regard the time dependence of a quantum state as the continuous dependence on time of an evolving state of some kind. This leads to a false dilemma: quantum states are either objective states of nature or subjective states of belief. In reality they are neither. The present paper views the aforesaid dependence as a dependence on the time of the measurement to whose possible outcomes the quantum state serves to assign probabilities. This makes it possible to recognize the full implications of the only testable feature of the theory, viz., the probabilities it assigns to measurement outcomes...
description: 21 pages, no graphics, inspired by "Subjective probability and quantum certainty" (quant-ph/0608190 v2)
Dynamic and environmental study of a mid-infrared wavelength channel for a horizontal telecom link
Creators: name: Sauvage, Chloe
name: Robert, Clelia
name: Sorrente, Beatrice
name: Grillot, Frederic
name: Erasme, Didier
Publisher: name: Proceedings of the COAT-2019 Workshop (Communications and Observations through Atmospheric Turbulence: characterization and mitigation). Châtillon, France, 2-3 december 2019
Year: 2019
Subjects: FREE SPACE OPTICAL COMMUNICATION
INFRARED TRANSMITTANCE, COHERENCE TIME, WAVE-FRONT SENSING

description: This study characterizes a horizontal atmospheric telecom channel in terms of evolution time of the intensity and the phase of the electromagnetic field received. The channel temporal characterization comes from a turbulence data base recorded during a Cn profiler experiment (SCINDAR). The coherence times of the intensity and phase for an overcast and unclear sky are computed, these values bring information on the bit rate achievable and the speed of an adaptive optics system.
On the impossibility of extracting classical randomness using a quantum computer
Creators: name: Dodis, Yevgeniy
name: Renner, Renato
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we initiate the question of whether quantum devices can provide us with an almost perfect source of classical randomness, and more generally, suffice for classical cryptographic tasks, such as encryption. Indeed, it is well known that classical computers are insufficient for either one of these tasks when all they have access to is a realistic imperfect source of randomness. On the other hand, quantum physics is inherently probabilistic which suggests that perhaps quantum computers can provide a reasonable way to overcome the above mentioned impossibility results. However, we show that this is not the case in a realistic setting where observations (measurements) are subject to noise.
description: 14 pages, latex
Supplementary document for Multi-wavelength unidirectional forward scattering properties of the arrow-shaped gallium phosphide nanoantenna - 6560958.pdf
Creators: name: Lv, Jingwei
name: Ren, Yanru
name: Wang, Debao
name: Xu, Xinchen
name: Liu, Wei
name: Wang, Jianxin
name: Liu, Chao
name: Chu, Paul
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: fabrication
Online Supplemental for Han & Pollock (2019)
Creators: name: Han, Jung-Hoon
name: Pollock, Timothy G.
Publisher: name: figshare
Year: 2020
Subjects: subject: 150310 Organisation and Management Theory
subject: FOS: Economics and business

description: Appendices for the manuscript: Han, Jung-Hoon & Timothy G. Pollock. 2021. The Two Towers (or Somewhere in Between): The Behavioral Consequences of Positional Inconsistency Across Status Hierarchies. Academy of Management Journal, 64(1): 86-113.
Appendix A provides information about an alternative testing of our hypotheses using polynomial regression.
Appendix B provides an example of high-artistic/commercial-status Hollywood professionals using out measurement.
Charaphloeus convexulus
Creators: name: Majka, Christopher G.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Laemophloeidae
Charaphloeus
Charaphloeus convexulus

description: Charaphloeus convexulus (LeConte, 1879) NOVA SCOTIA: Halifax Co.: Halifax, VI.1897, J.D. Evans, Evans (1899); Waverley, 14.V.1965, B. Wright, window trap in red oak, (1, NSMC); Hants Co.: Mount Uniake, 16.VI.1947, W.J. Brown, (1, CNC); Kings Co.: Aldershot, 15.V.1950, H.T. Stultz, (1, ACNS); Lunenburg Co.: Bridgewater, 12.V.1965, 27.V.1965, 19.VI.1965, 30.VI.1965, 16-19.V.1965, 10-14.V.1965, B. Wright, window trap in red oak, (6, NSMC); Queens Co.: Medway River, 13.VII.1993, J. and T. Cook, car net, (1, JCC). Charaphloeus convexulus is newly recorded in Atlantic Canada (Fig. 1). Although species was originally reported from Halifax, Nova Scotia by Evans (1899), subsequent authors have overlooked this early record. Found under bark (Thomas 1993).
description: Published as part of Majka, Christopher G., 2008, The flat bark beetles (Coleoptera, Silvanidae, Cucujidae, Laemophloeidae) of Atlantic Canada, pp. 221-238 in ZooKeys 2 (2) on pages 230-231, DOI: 10.3897/zookeys.2.14, http://zenodo.org/record/576402
description: {"references": ["Evans JD (1899) List of Coleoptera from Halifax, NS. Th e Canadian Entomologist 31: 320 - 321.", "Thomas MC (1993) Th e Flat Bark Beetles of Florida (Coleoptera: Silvanidae, Passandridae, and Laemophloeidae). Arthropods of Florida and Neighbouring Lands, Volume 15. Florida Department of Agriculture & Consumer Services, Gainesville, 101 pp."]}
Manifestation of lattice distortions in the O 1s spectra in Ca1-xSrxRuO3
Creators: name: Singh, Ravi Shankar
name: Maiti, Kalobaran
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the effect of temperature on the electronic and crystal structures of Ca1-xSrxRuO3 via the evolution of O 1s core level spectra as a function of temperature and composition, x. O 1s spectra in SrRuO3 exhibit a dominant sharp feature at all the temperatures with a small trace of impurity feature at higher binding energies. The spectra in Ca doped samples, however, exhibit two distinct features. Analysis of the experimental spectral functions and the band structure results suggest that different Madelung potential at the two types of oxygen sites in the orthorhombically distorted structure leads to such splitting in the O 1s spectra. Interestingly, the energy separation of these two features becomes smaller at low temperatures in the Ca dominated samples concomitant to the observation of non-Fermi liquid behavior in their bulk properties. Such temperature evolution, thus, indicates a direct connection of the lattice degrees of freedom with the electronic properties of these compounds.
description: four figures
The permeability of Drosophila melanogaster embryos
Creators: name: Watson, Catherine E.
Publisher: name: University of British Columbia
Year: 2010

description: Drosophila are used extensively for genetic, developmental and now molecular biology research. At present, germline transformation of these organisms can only be achieved by microinjection of P-element vectors into the pole cells of young embryos. The technique of microinjection however, requires a delicate touch and is quite laborious. Therefore, the development of a rapid and simple technique was investigated. Electroporation, like microinjection, is a physical means of introducing DNA into a cell and is therefore potentially applicable to all cell types. Electroporation involves the use of an electrical current to create pores in the membrane of a cell. Macromolecules, such as DNA may enter a cell via these pores. Electroporation is a quick, reproducible, and efficient method for transforming cells. Through studies of the survival and permeability of Drosophila melanogaster embryos exposed to electrical currents, it was discovered that although the survival of the embryos decreased steadily as field strength increased, the embryos did not become permeable to a water soluble dye unless a pulse of 10 kV/cm was applied. Few embryos survived this extreme voltage required for dye uptake. Attempts to introduce DNA into dechorionated Drosophila embryos utilizing this technique however, produced no transformants. These results suggested that the remaining protective coatings of the dechorionated embryo were obstructing efficient pore formation, thus preventing DNA penetration. In view of these results, methods to eliminate the wax layer, present between the chorion and vitelline membrane of laid eggs, were examined. Wax removal by detergent solubilization, solvent extraction and melting by heating were investigated, yet did not produce a satisfactory procedure.
Shifting and pinning of a magnetic vortex core in a permalloy dot by a magnetic field
Creators: name: Uhlig, T.
name: Rahm, M.
name: Dietrich, Christian
name: Höllinger, R.
name: Heumann, M.
name: Weiss, Dieter
name: Zweck, Josef
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: 530 Physik

description: Magnetic pinning in thin films seems to be a major research subject in the near future, as it is involved in all switching processes which include a movement of a domain wall or a magnetic vortex. We used Lorentz transmission electron microscopy and vortex pinning at artificial pinning sites to investigate the pinning behavior of magnetic vortices for the first time with high spatial resolution.
Quantum groups acting on 4 points
Creators: name: Banica, Teodor
name: Bichon, Julien
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20G42; 16W30

description: We classify the compact quantum groups acting on 4 points. These are the quantum subgroups of the quantum permutation group $\mathcal Q_4$. Our main tool is a new presentation for the algebra $\rm C(\mathcal Q_4)$, corresponding to an isomorphism of type $\mathcal Q_4\simeq SO_{-1}(3)$. The quantum subgroups of $\mathcal Q_4$ are subject to a McKay type correspondence, that we describe at the level of algebraic invariants.
description: 34 pages. Comments added in last section