cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Separability of n-particle mixed states: necessary and sufficient conditions in terms of linear maps
Creators: name: Horodecki, Michal
name: Horodecki, Pawel
name: Horodecki, Ryszard
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide necessary and sufficient conditions for separability of mixed states of n-particle systems. The conditions are formulated in terms of maps which are positive on product states of $n-1$ particles. The method of providing of the maps on the basis of unextendable product bases is provided. The three qubit state problem is reformulated in the form suggesting possibility of explicite characterisation of all maps needed for separability condition.
description: RevTeX, 7 pages
title: Integrating scientific studies and monitoring results into advice in the German EEZ
Creators: name: Pedersen, Søren Anker
name: Pusch, Christian
Publisher: name: ASC 2006 - Theme session L
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.In November 2005, ICES and the Federal Agency for Nature Conservation (BfN) initiated the research and development project Environmentally Sound Fishery Management in Protected Areas (EMPAS) with the objective of developing fisheries management plans for designated Natura 2000 sites (MPAs) within the German EEZ of the North Sea and Baltic Sea. The purpose of this paper is to give a description of the background and the objectives of the project.
ESM - Literature survey of conditions and yields of other methods from A convenient and eco-friendly cerium(III) chloride-catalysed synthesis of methoxime derivatives of aromatic aldehydes and ketones
Creators: name: Cortés, Iván
name: Kaufman, Teodoro S.
name: Bracca, Andrea B. J.
Publisher: name: The Royal Society
Year: 2018
Subjects: subject: Organic Chemistry
subject: FOS: Chemical sciences
subject: 30203 Inorganic Green Chemistry
subject: 30306 Synthesis of Materials
subject: 30503 Organic Chemical Synthesis
subject: 30504 Organic Green Chemistry

description: Literature survey of conditions and yields of other methods. Performance comparison
LRG-BEASTS III: Ground-based transmission spectrum of the gas giant orbiting the cool dwarf WASP-80
Creators: name: Kirk, J.
name: Wheatley, P. J.
name: Louden, T.
name: Skillen, I.
name: King, G. W.
name: McCormac, J.
name: Irwin, P. G. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We have performed ground-based transmission spectroscopy of the hot Jupiter orbiting the cool dwarf WASP-80 using the ACAM instrument on the William Herschel Telescope (WHT) as part of the LRG-BEASTS programme. This is the third paper of a ground-based transmission spectroscopy survey of hot Jupiters using low-resolution grism spectrographs. We observed two transits of the planet and have constructed transmission spectra spanning a wavelength range of 4640-8840A. Our transmission spectrum is inconsistent with a previously claimed detection of potassium in WASP-80b's atmosphere, and is instead most consistent with a haze. We also do not see evidence for sodium absorption at a resolution of 100A.
description: 11 pages, 9 figures. Accepted for publication in MNRAS
title: AN, Registre des écrous du Châtelet, Y5266, f. p1000729
Creators: name: Claustre, Julie
name: Nationales, Archives
name: Archives Nationales
name: Claustre, Julie
name: ArchivesNationales/J.CLAUSTRE/H.REGAZZI/2020
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Châtelet
subject: registre

description: Registre des écrous du Châtelet, Archives Nationales, Y5266. Numérisation en mode image.
description: Bibliographic citation: Archives Nationales, Registre des écrous du Châtelet, Y5266, f. p1000729
SW Sextantis in an excited, low state
Creators: name: Groot, Paul J
name: Rutten, Rene' G. M.
name: van Paradijs, Jan
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present low-resolution spectrophotometric optical observations of the eclipsing nova-like cataclysmic variable SW Sex, the prototype of the SW Sex stars. We observed the system when it was in an unusual low state. The spectrum is characterized by the presence of strong He II and C IV emission lines as well as the normal single peaked Balmer emission lines. The radial temperature profile of the disk follows the expected T ~R^3/4 only in the outer parts and flattens off inside 0.5 times the white dwarf Roche lobe radius. The single peaked emission lines originate in a region above the plane of the disk, at the position of the hot spot.
description: 14 pages, 16 figures, accepted by A&A
title: Spatial and temporal variation in harp seals prey consumption in the Barents sea
Creators: name: Haug, Tore
name: Lindstrøm, Ulf
name: Nilssen, Kjell T.
Publisher: name: ASC 2006 - Theme session L
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.The Barents Sea ecosystem has experienced major fluctuations in species abundance in the past 20-30 years. The mechanisms behind these fluctuations are complex and arise from numerous interactions between species and the environment. Previous and present attempts to assess multi-species interactions in the Barents sea ecosystem has resulted in increased focus on the foraging ecology of the most conspicuous high trophic-level predators in the ecosystem. The Barents Sea stock of harp seals Pagophilus groenlandicus is, along with Arctic cod Gadus morhua, considered as the most conspicuous high trophic-level predator in the Barents Sea ecosystem. The abundance and feeding ecology of the Barents Sea stock of harp seals has been monitored the past 15 years. Previous prey consumption estimates suggests that harp seals consume range between 3.3 and 5 million tonnes of prey annually, depending on the choice of input parameters in the bioenergetic model. There were a considerable amounnt of uncertainty attached to the input data in the consumption model, in particular the important harp seal diets during summer (May-August). Also, uncertainty estimates of the prey consumption were not given in the previous study. An important objective of this study was to estimate the uncertainty of the prey consumption estimates by using a standard Monte-Carlo framework; random draws from probability distributions of diet and abundance were performed. Additionally, new diet data from May-July has become available and is included in the analysis. The summer consumption was to a large extent dominated by krill, whereas polar cod also contributed importantly. All sampling were performed in a period with low capelin abundance - this may have influenced the results.
The Effect of Combined Magnetic Geometries on Thermally Driven Winds I: Interaction of Dipolar and Quadrupolar Fields
Creators: name: Finley, Adam J.
name: Matt, Sean P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Cool stars with outer convective envelopes are observed to have magnetic fields with a variety of geometries, which on large scales are dominated by a combination of the lowest order fields such as the dipole, quadrupole and octupole modes. Magnetised stellar wind outflows are primarily responsible for the loss of angular momentum from these objects during the main sequence. Previous works have shown the reduced effectiveness of the stellar wind braking mechanism with increasingly complex, but singular, magnetic field geometries. In this paper, we quantify the impact of mixed dipolar and quadrupolar fields on the spin-down torque using 50 MHD simulations with mixed field, along with 10 of each pure geometries. The simulated winds include a wide range of magnetic field strength and reside in the slow-rotator regime. We find that the stellar wind braking torque from our combined geometry cases are well described by a broken power law behaviour, where the torque scaling with field strength can be predicted by the dipole component alone or the quadrupolar scaling utilising the total field strength. The simulation results can be scaled and apply to all main-sequence cool stars. For Solar parameters, the lowest order component of the field (dipole in this paper) is the most significant in determining the angular momentum loss.
description: 15 pages + 9 figures (main), 3 pages + 1 figure (appendix), accepted for publication to ApJ
title: Estimating discards conditional on landings and other factors
Creators: name: Millar, Colin
name: Fryer, Rob
Publisher: name: ASC 2006 - Theme session K
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.Discards have historically been estimated using design based inference. Here we pursue a modelling approach using the data collected by the Scottish observer programme over the period 1980-2003. We assume that, on any trip, discarding either occurs or it doesn't, and when it does, the number of discards has a gamma distribution. This leads to a Bernoulli mixture of a degenerate distribution at zero and a gamma distribution, also known as a zero-inflated gamma. We use a two stage method involving generalized linear modelling at each stage to fit the zero-inflated gamma distribution with landings, gear, area fished, quarter (season) and year as explanatory variables. We fit this model to the numbers of haddock discarded at age 2 in ICES sub-area IV.
Semiclassical Dynamics of the Jaynes-Cummings Model
Creators: name: Alscher, Adrian
name: Grabert, Hermann
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The semiclassical approximation of coherent state path integrals is employed to study the dynamics of the Jaynes-Cummings model. Decomposing the Hilbert space into subspaces of given excitation quanta above the ground state, the semiclassical propagator is shown to describe the exact quantum dynamics of the model. We also present a semiclassical approximation that does not exploit the special properties of the Jaynes-Cummings Hamiltonian and can be extended to more general situations. In this approach the contribution of the dominant semiclassical paths and the relevant fluctuations about them are evaluated. This theory leads to an accurate description of spontaneous emission going beyond the usual classical field approximation.
description: 18 pages
Characteristic Analysis of 1024-Point Quantized Radix-2 FFTIFFT Processor
Creators: name: Teymourzadeh, Rozita
Publisher: name: figshare
Year: 2018
Subjects: subject: Computer Engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 90609 Signal Processing
subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: The precise analysis and accurate measurement of harmonic provides a reliable scientific industrial application. However, the high-performance DSP processor is the important method of electrical harmonic analysis. Hence, in this research work, the effort was taken to design a novel high-resolution single 1024-point fast Fourier transform (FFT) and inverse fast Fourier transform (IFFT) processors for improvement of the harmonic measurement techniques. Meanwhile, the project is started with design and simulation to demonstrate the benefit that is achieved by the proposed 1024-point FFT/IFFT processor. The pipelined structure is incorporated in order to enhance the system efficiency. As such, a pipelined architecture was proposed to statically scale the resolution of the processor to suite adequate trade-off constraints. The proposed FFT makes use of programmable fixed-point/floating-point to realize higher precision FFT.
title: National Infrastructure for access to oceanographic and marine data and information in the Netherlands - NODCi project
Creators: name: de Bruin, Taco
name: Schaap, Dick M.A.
Publisher: name: ASC 2006 - Theme session M
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.National Infrastructure for access to oceanographic and marine data and information in the Netherlands - NODCi project.
Dust Migration and Morphology in Optically Thin Circumstellar Gas Disks
Creators: name: Takeuchi, Taku
name: Artymowicz, Pawel
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze the dynamics of gas-dust coupling in the presence of stellar radiation pressure in circumstellar gas disks, which are in a transitional stage between the gas-dominated, optically thick, primordial nebulae, and the dust-dominated, optically thin Vega-type disks. Dust undergo radial migration, seeking a stable equilibrium orbit in corotation with gas. The migration of dust gives rise to radial fractionation of dust and creates a variety of possible observed disk morphologies, which we compute by considering the equilibrium between the dust production and the dust-dust collisions removing particles from their equilibrium orbits. Sand-sized and larger grains are distributed throughout most of the gas disk, with concentration near the gas pressure maximum in the inner disk. Smaller grains (typically in the range of 10 to 200 micron) concentrate in a prominent ring structure in the outer region of the gas disk (presumably at radius 100 AU), where gas density is rapidly declining with radius. The width and density, as well as density contrast of the dust ring with respect to the inner dust disk depend on the distribution of gas. Our results open the prospect for deducing the distribution of gas in circumstellar disks by observing their dust. We have qualitatively compared our models with two observed transitional disks around HR 4796A and HD 141569A. Dust migration can result in observation of a ring or a bimodal radial dust distribution, possibly very similar to the ones produced by gap-opening planet(s) embedded in the disk, or shepherding it from inside or outside. We conclude that a convincing planet detection via dust imaging should include specific non-axisymmetric structure following from the dynamical simulations of perturbed disks.
description: 27 pages, 16 figures, submitted to ApJ
title: The UK Marine Data and Information Partnership
Creators: name: Cotton, P. D.
Publisher: name: ASC 2006 - Theme session M
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.In the United Kingdom, marine data and information are collected by a variety of UK government, non- government, academic, private sector and other research organisations for many different reasons. An almost inevitable consequence of these many separate marine data gathering and management activities is a legacy of differing ways of storing and sharing data and information. As new questions are asked of marine science and more holistic assessments required, it is essential that a coordinated approach to the management and stewardship of marine data and information is adopted.
Combinatorics of the subshift associated to Grigorchuk's group
Creators: name: Grigorchuk, Rostislav
name: Lenz, Daniel
name: Nagnibeda, Tatiana
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We study combinatorial properties of the subshift induced by the substitution that describes Lysenok's presentation of Grigorchuk's group of intermediate growth by generators and relators. This subshift has recently appeared in two different contexts: on one hand, it allowed to embed Grigorchuk's group in a topological full group, and on the other hand, it was useful in the spectral theory of Laplacians on the associated Schreier graphs.
description: 8 pages; part of the material discussed in the paper was originally contained in (earlier versions of) arXiv:1510.00545 and arXiv:1412.6822. In their published versions the latter two articles do not contain this material anymore
Rejection Properties of Stochastic-Resonance-Based Detectors of Weak Harmonic Signals
Creators: name: Croce, R. P.
name: Demma, Th.
name: Galdi, V.
name: Pierro, V.
name: Pinto, I. M.
name: Postiglione, F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In (V. Galdi et al., Phys. Rev. E57, 6470, 1998) a thorough characterization in terms of receiver operating characteristics (ROCs) of stochastic-resonance (SR) detectors of weak harmonic signals of known frequency in additive gaussian noise was given. It was shown that strobed sign-counting based strategies can be used to achieve a nice trade-off between performance and cost, by comparison with non-coherent correlators. Here we discuss the more realistic case where besides the sought signal (whose frequency is assumed known) further unwanted spectrally nearby signals with comparable amplitude are present. Rejection properties are discussed in terms of suitably defined false-alarm and false-dismissal probabilities for various values of interfering signal(s) strength and spectral separation.
description: 4 pages, 5 figures. Misprints corrected. PACS numbers added. RevTeX4
Optimised Toolbox for the Design of Rotary Reluctance Motors
Creators: name: Teymourzadeh, Rozita
Publisher: name: figshare
Year: 2018
Subjects: subject: Computer Engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 90609 Signal Processing
subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: Operation of the rotary reluctance machine is highly affected due to the sequential attraction-repulsion principle of the adjacent phase excitation. The problem has been identified and addressed by various researchers in the past decades. The effective magnetic design is one way of minimizing the effect. However, it is tedious and time-consuming as the design procedure involve higher analytical derivation and calculations. This paper presents a simpler graphical user interface toolbox to use for the design of reluctance motors. The developed interface calculates the analytical values of the aligned, unaligned and intermediate inductance values so that the user can interpret the inductance and torque profile easily. A new analytical method called Cyclic Integration Method (CIM) is proposed and is used for the performance evaluation of the designed toolbox.
Width-tuned magnetic order oscillation on zigzag edges of honeycomb nanoribbons
Creators: name: Chen, Wen-Chao
name: Zhou, Yuan
name: Yu, Shun-Li
name: Yin, Wei-Guo
name: Gong, Chang-De
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Quantum confinement and interference often generate exotic properties in nanostructures. One recent highlight is the experimental indication of a magnetic phase transition in zigzag-edged graphene nanoribbons at the critical ribbon width of about 7 nm [G. Z. Magda et al., Nature \textbf{514}, 608 (2014)]. Here we show theoretically that with further increase in the ribbon width, the magnetic correlation of the two edges can exhibit an intriguing oscillatory behavior between antiferromagnetic and ferromagnetic, driven by acquiring the positive coherence between the two edges to lower the free energy. The oscillation effect is readily tunable in applied magnetic fields. These novel properties suggest new experimental manifestation of the edge magnetic orders in graphene nanoribbons, and enhance the hopes of graphene-like spintronic nanodevices functioning at room temperature.
description: 22 pages, 9 figures
Using principal component analysis to understand the variability of PDS 456
Creators: name: Parker, M. L.
name: Reeves, J. N.
name: Matzeu, G. A.
name: Buisson, D. J. K.
name: Fabian, A. C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a spectral-variability analysis of the low-redshift quasar PDS 456 using principal component analysis. In the XMM-Newton data, we find a strong peak in the first principal component at the energy of the Fe absorption line from the highly blueshifted outflow. This indicates that the absorption feature is more variable than the continuum, and that it is responding to the continuum. We find qualitatively different behaviour in the Suzaku data, which is dominated by changes in the column density of neutral absorption. In this case, we find no evidence of the absorption produced by the highly ionized gas being correlated with this variability. Additionally, we perform simulations of the source variability, and demonstrate that PCA can trivially distinguish between outflow variability correlated, anti-correlated, and un-correlated with the continuum flux. Here, the observed anti-correlation between the absorption line equivalent width and the continuum flux may be due to the ionization of the wind responding to the continuum. Finally, we compare our results with those found in the narrow-line Seyfert 1 IRAS 13224-3809. We find that the Fe K UFO feature is sharper and more prominent in PDS 456, but that it lacks the lower energy features from lighter elements found in IRAS 13224-3809, presumably due to differences in ionization.
description: 7 pages, 8 figures, accepted to MNRAS (updated to correct Gallo & Fabian references)
FPGA Implementation of pipeline Digit-Slicing Multiplier-Less Radix 2 power of 2 DIF SDF Butterfly for Fourier Transform Structure
Creators: name: Teymourzadeh, Rozita
Publisher: name: figshare
Year: 2018
Subjects: subject: Computer Engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 90609 Signal Processing
subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: The need for wireless communication has driven the communication systems to high performance. However, the main bottleneck that affects the communication capability is the Fast Fourier Transform (FFT), which is the core of most modulators. This paper presents FPGA implementation of pipeline digit-slicing multiplier-less radix 22 DIF (Decimation In Frequency) SDF (single path delay feedback) butterfly for FFT structure. The approach is taken; in order to reduce computation complexity in butterfly multiplier, the digit-slicing multiplier-less technique was utilized in the critical path of pipeline Radix-22 DIF SDF FFT structure. The proposed design focused on the trade-off between the speed and active silicon area for the chip implementation. The multiplier input data was sliced into four blocks each one with four bits to process at the same time in parallel. The new architecture was investigated and simulated with MATLAB software. The Verilog HDL code in Xilinx ISE environment was derived to describe the FFT Butterfly functionality and was downloaded to Virtex II FPGA board. Consequently, the Virtex-II FG456 Proto board was used to implement and test the design on the real hardware. As a result, from the findings, the synthesis report indicates the maximum clock frequency of 555.75 MHz with the total equivalent gate count of 32,146 is a marked and significant improvement over Radix 22 DIF SDF FFT butterfly. In comparison with the conventional butterfly architecture design which can only run at a maximum clock frequency of 200.102 MHz and the conventional multiplier can only run at a maximum clock frequency of 221.140 MHz, the proposed system exhibits better results. It can be concluded that on-chip implementation of pipeline digit-slicing multiplier-less butterfly for FFT structure is an enabler in solving problems that affect communications capability in FFT and possesses huge potentials for future related works and research areas.See publication
Presolar Grains from Novae
Creators: name: Amari, S.
name: Gao, X.
name: Nittler, L. N.
name: Zinner, E.
name: Jose, J.
name: Hernanz, M.
name: Lewis, R. S.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of five SiC grains and one graphite grain isolated from the Murchison carbonaceous meteorite whose major-element isotopic compositions indicate an origin in nova explosions. The grains are characterized by low 12C/13C (4-9) and 14N/15N (5-20) ratios, large excesses in 30Si (30Si/28Si ratios range to 2.1 times solar) and high 26Al/27Al ratios. These isotopic signatures are theoretically predicted for the ejecta from ONe novae and cannot be matched by any other stellar sources. Previous studies of presolar grains from primitive meteorites have shown that the vast majority formed in red giant outflows and supernova ejecta. Although a classical nova origin was suggested for a few presolar graphite grains on the basis of 22Ne enrichments, this identification is somewhat ambiguous since it is based only on one trace element. Our present study presents the first evidence for nova grains on the basis of major element isotopic compositions of single grains. We also present the results of nucleosynthetic calculations of classical nova models and compare the predicted isotopic ratios with those of the grains. The comparison points toward massive ONe novae if the ejecta are mixed with material of close-to-solar composition.
description: 20 pages, 5 figures, 1 table. ApJ, in press
Quantizing speeds with the cosmological constant
Creators: name: Girelli, Florian
name: Livine, Etera R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Considering the Barrett-Crane spin foam model for quantum gravity with (positive) cosmological constant, we show that speeds must be quantized and we investigate the physical implications of this effect such as the emergence of an effective deformed Poincare symmetry.
description: 4 pages, revtex4, 3 figures
Optimal strategies for sending information through a quantum channel
Creators: name: Bagan, E.
name: Baig, M.
name: Brey, A.
name: Munoz-Tapia, R.
name: Tarrach, R.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum states can be used to encode the information contained in a direction, i.e., in a unit vector. We present the best encoding procedure when the quantum state is made up of $N$ spins (qubits). We find that the quality of this optimal procedure, which we quantify in terms of the fidelity, depends solely on the dimension of the encoding space. We also investigate the use of spatial rotations on a quantum state, which provide a natural and less demanding encoding. In this case we prove that the fidelity is directly related to the largest zeros of the Legendre and Jacobi polynomials. We also discuss our results in terms of the information gain.
description: 4 pages, RevTex, final version to appear in Phys.Rev.Lett
VLSI Implementation of Novel Class of High Speed Pipelined Digital Signal Processing Filter for Wireless Receivers
Creators: name: Teymourzadeh, Rozita
Publisher: name: figshare
Year: 2018
Subjects: subject: Computer Engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: 90609 Signal Processing
subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: The need for high performance transceiver with high Signal to Noise Ratio (SNR) has driven the communication system to utilize latest technique identified as over sampling systems. It was the most economical modulator and decimation in communication system. It has been proven to increase the SNR and is used in many high performance systems such as in the Analog to Digital Converter (ADC) for wireless transceiver. This research work presented the design of the novel class of decimation and its VLSI implementation which was the sub-component in the over sampling technique. The design and realization of main unit of decimation stage that was the Cascaded Integrator Comb (CIC) filter, the associated half band filters and the droop correction are also designed. The Verilog HDL code in Xilinx ISE environment has been derived to describe the proposed advanced CIC filter properties. Consequently, Virtex-II FPGA board was used to implement and test the design on the real hardware. The ASIC design implementation was performed accordingly and resulted power and area measurement on chip core layout. The proposed design focused on the trade-off between the high speed and the low power consumption as well as the silicon area and high resolution for the chip implementation which satisfies wireless communication systems. The synthesis report illustrates the maximum clock frequency of 332 MHz with the active core area of 0.308×0.308 mm2. It can be concluded that VLSI implementation of proposed filter architecture is an enabler in solving problems that affect communication capability in DSP application.
title: Fisheries Data Management Access Integration and Sharing - The Canadian Approach
Creators: name: Sullivan, Gerry
name: Tremblay, Denis
name: Madore, Denis
Publisher: name: ASC 2006 - Theme session M
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Canada has adopted a fisheries management information vision and strategy targeting the generation of integrated, accessible and shared “actionable information” designed for making more informed decisions in time to make a difference.
Quasi-periodic oscillations from post-shock accretion column of polars
Creators: name: Bera, Prasanta
name: Bhattacharya, Dipankar
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A set of strongly magnetized accreting white dwarfs (polars) shows quasi-periodic oscillations (QPOs) with frequency about a Hz in their optical luminosity. These Hz-frequency QPOs are thought to be generated by intensity variations of the emitted radiation originating at the post-shock accretion column. Thermal instability in the post-shock region, triggered by efficient cooling process at the base, is believed to be the primary reason behind the temporal variability. Here we study the structure and the dynamical properties of the post-shock accretion column including the effects of bremsstrahlung and cyclotron radiation. We find that the presence of significant cyclotron emission in optical band reduces the overall variability of the post-shock region. In the case of a larger post-shock region above the stellar surface, the effects of stratification due to stellar gravity becomes important. An accretion column, influenced by the strong gravity, has a smaller variability as the strength of the thermal instability at the base of the column is reduced. On the other hand, the cool, dense plasma, accumulated just above the stellar surface, may enhance the post-shock variability due to the propagation of magnetic perturbations. These characteristics of the post-shock region are consistent with the observed properties of V834~Cen and in general with Cataclysmic Variable sources that exhibit QPO frequency of about a Hz.
description: 16 pages, 11 figures; submitted to MNRAS
Are Interaction-free Measurements Interaction Free?
Creators: name: Vaidman, L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In 1993 Elitzur and Vaidman introduced the concept of interaction-free measurements which allowed finding objects without ``touching'' them. In the proposed method, since the objects were not touched even by photons, thus, the interaction-free measurements can be called as ``seeing in the dark''. Since then several experiments have been successfully performed and various modifications were suggested. Recently, however, the validity of the term ``interaction-free'' has been questioned. The criticism of the name is briefly reviewed and the meaning of the interaction-free measurements is clarified.
description: 11 pages, 3 eps figures. Contribution to the ICQO 2000, Raubichi, Belarus
On the structure of the new electromagnetic conservation laws
Creators: name: Edgar, S. Brian
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: New electromagnetic conservation laws have recently been proposed: in the absence of electromagnetic currents, the trace of the Chevreton superenergy tensor, $H_{ab}$ is divergence-free in four-dimensional (a) Einstein spacetimes for test fields, (b) Einstein-Maxwell spacetimes. Subsequently it has been pointed out, in analogy with flat spaces, that for Einstein spacetimes the trace of the Chevreton superenergy tensor $H_{ab}$ can be rearranged in the form of a generalised wave operator $\square_L$ acting on the energy momentum tensor $T_{ab}$ of the test fields, i.e., $H_{ab}=\square_LT_{ab}/2$. In this letter we show, for Einstein-Maxwell spacetimes in the full non-linear theory, that, although, the trace of the Chevreton superenergy tensor $H_{ab}$ can again be rearranged in the form of a generalised wave operator $\square_G$ acting on the electromagnetic energy momentum tensor, in this case the result is also crucially dependent on Einstein's equations; hence we argue that the divergence-free property of the tensor $H_{ab}=\square_GT_{ab}/2$ has significant independent content beyond that of the divergence-free property of $T_{ab}$.
title: FishFrame Fisheries and stock assessment data framework
Creators: name: Degel, Henrik
name: Jansen, Teunis
Publisher: name: ASC 2006 - Theme session M
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Many research and advisory tasks needs quality assured data on a disaggregated level to make the re-stratification needed to answer a specific question. It is a slow process to gather international datasets for these analyses, because the raw data are spread between labs. Even when gathering data for fixed reoccurring tasks like assessment working groups, data are often late and the quality can be unsatisfactory. The current situation of this “semi-manual distributed data warehouse” can be improved technically. Methods for quality control, raising and calculation can be discussed and unified. Development and test of software modules can be done once and reused by all. The biggest challenge in this is not technical – it is in organisation, coordination and trust. This challenge has been addressed by FishFrame - a web-based datawarehouse application. The “bottom-up” approach with maximum involvement of end users from as many labs and user groups as possible has been rather slow but quite successful in building international trust and cooperation around the system. This is mandatory prerequisites when our primary goal is not the programming project itself, but the creation of a tool that adds real value to users and in the end improves the way we work with our data. FishFrame version 4.2 is presented and the lessons learned from the process are discussed.
The photoinduced transition in magnetoresistive manganites: a comprehensive view
Creators: name: Esposito, V.
name: Rettig, L.
name: Abreu, E.
name: Bothschafter, E.
name: Ingold, G.
name: Kawasaki, M.
name: Kubli, M.
name: Lantz, G.
name: Nakamura, M.
name: Rittman, J.
name: Savoini, M.
name: Tokura, Y.
name: Staub, U.
name: Johnson, S. L.
name: Beaud, P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We use femtosecond x-ray diffraction to study the structural response of charge and orbitally ordered Pr$_{1-x}$Ca$_x$MnO$_3$ thin films across a phase transition induced by 800 nm laser pulses. By investigating the dynamics of both superlattice reflections and regular Bragg peaks, we disentangle the different structural contributions and analyze their relevant time-scales. The dynamics of the structural and charge order response are qualitatively different when excited above and below a critical fluence $f_c$. For excitations below $f_c$ the charge order and the superlattice is only partially suppressed and the ground state recovers within a few tens of nanosecond via diffusive cooling. When exciting above the critical fluence the superlattice vanishes within approximately half a picosecond followed by a change of the unit cell parameters on a 10 picoseconds time-scale. At this point all memory from the symmetry breaking is lost and the recovery time increases by many order of magnitudes due to the first order character of the structural phase transition.
title: IDOD: an integrated marine environmental database
Creators: name: De Cauwer, K.
name: Devolder, M.
name: Jans, S.
name: Meerhaeghe, A.
name: Scory, S.
Publisher: name: ASC 2006 - Theme session M
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.In 1997, the Belgian Marine Data Centre started developing an integrated marine environmental database. The initial core model was designed taking into account the characteristics of concentration data in seawater. This model was soon expanded to cope with concentrations in air, sediment and biota. Nowadays, also spectral data (optical properties, sediment granulometry), observations on living organisms and biodiversity information are stored in the database. Very recently, the structure was complemented with a taxonomic module that allows the storage of vernacular names, taxonomic changes, determinations to any level of detail as well as revised determinations of a given specimen. Next to the storage of measurement results, special attention is paid to the storage of a comprehensive set of meta-information like the corresponding research projects, the methodology and the related quality control information. The main thought about storing and linking results of various disciplines together is to improve the knowledge of our marine ecosystem in its broadest point of view and to make the life of the users of the system easier. The online interface provides many search options and several export formats, in order to allow everyone to create a subset of the data suited to his/her very own needs. In this paper, we present the structure of the IDOD database, the technical choices we made to reach our goals and our plans for the future.
title: Tri-ventricular hydrocephalus: Aqueduct web
Creators: name: Yadav, Abhishek Kumar
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Neuroradiology
subject: Cardiovascular system
subject: CNS
subject: Colon
subject: Conventional radiography
subject: CT-Angiography
subject: Clinical Cases

description: Clinical History: An 11-month-old baby came to our institution with increasing head circumference acute mental status changes, headache, and vomiting.

description: 11 months, male
title: ADCO, Cartulaire de Cîteaux dit Cartularium Vetus (milieu XIIIe siècle) et Notices du XIIe siècle, Cart. 169 (11 H 63), f. 0079r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2011
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Cartulaire de Cîteaux dit Cartularium Vetus (milieu XIIIe siècle) et Notices du XIIe siècle, Archives départementales de la Côte-d'Or, Cart. 169 (11 H 63), f. 0079r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux dit Cartularium Vetus (milieu XIIIe siècle) et Notices du XIIe siècle, Archives départementales de la Côte-d'Or, Cart. 169 (11 H 63), f. 0079r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
title: Semantic Interoperability: A Goal for Marine Data Management
Creators: name: Lowry, Roy
name: Bermudez, Luis
name: Graybeal, John
Publisher: name: ASC 2006 - Theme session M
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Semantic Interoperability: A Goal for Marine Data Management.
NASA's SMD Transform to Open Science Initative
Creators: name: Gentemann, Chelle L.
name: Murphy, Kevin
name: Baynes, Kathleen
name: Crawford, Steve
name: Ivey, Yvonne
name: Luna-Cruz, Yaitza
name: Steponaitis, Elena
name: Truong, Amy
name: Hall, Cynthia
name: Martinez, Isabella
name: Mastracchio, Karla
name: Ward, Kevin
name: Cassidy, Emily
name: Reyes, Christian
Publisher: name: Zenodo
Year: 2022

description: Open science is a foundational objective of NASA’s Science Mission Directorate (SMD). Open science is an evolving paradigm that seeks to foster greater inclusivity, diversity, and participation in the scientific process while increasing transparency and reproducibility.
title: Confidentiality of fisheries data in the context of enforcement activities versus research
Creators: name: Nolan, F.
Publisher: name: ASC 2006 - Theme session M
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Scientists and fisheries enforcement authorities both collect fisheries data to fulfil their separate objectives. With increasing pressure on fisheries resources, they have increasing needs for better quality data. In recent years, significant advances have been made in the technologies used by fisheries enforcement authorities to collect, analyse and disseminate fisheries data. Since the early 1990s, tracking of fishing vessels by satellite (VMS) has been providing valuable data for control purposes. Within the EU VMS now applies to all fishing vessels in excess of 15 metres overall length. The automatic transmission by VMS of data relating to speed and course of fishing vessels has been obligatory in the EU since 1 January 2006. Furthermore, there have been significant developments in the technologies used to electronically report and store data on catches and other fishing activities. While initial developments in this field were within the framework of scientific research projects the worldwide trend is now towards the development of the technology for control and enforcement purposes. There is no doubt that fisheries scientists could benefit hugely from access to data collected by enforcement authorities, however such access must be subject to certain delays in timing of release of data. Levels of aggregation and confidentiality should ensure that the identities of individuals or vessels are not revealed. This paper highlights the main areas where progress can be made to ensure that scientists can have access to the best data available without compromising confidentiality and it outlines the benefits which can accrue from developing synergies between fisheries enforcement and research programmes.
Gelotia lanka Wijesinghe 1991
Creators: name: Jose, Athira
name: Tripathi, Rishikesh
name: Sudhikumar, Ambalaparambil Vasu
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Salticidae
Gelotia
Gelotia lanka

description: Gelotia lanka Wijesinghe, 1991
Figs 2A–F, 3
 Gelotia lanka Wijesinghe, 1991: 275, figs 1–6 (J, ♀).
 Type material. Holotype J and paratype ♀ from SRI LANKA, T. Wijesiri, AMNH, not examined. (Illustrations of this species given in Wijesinghe, 1991 a: 275, figs. 1-6 are diagnostic and were used for comparison).
 Other material examined. 1 J (CATE 10020505 a) from INDIA: Kerala: Peppara wildlife Santuary: near Vahvanthole waterfalls 8°40'28.2"N, 77°09'45.8"E; 410m alt.), 06 February 2023, A. Jose leg., from litter, by hand.
Diagnosis. For diagnosis of the species, see Wijesinghe, 1991.
 Supplementary description. Male (Figures 2A–C). For description of the species, see Wijesinghe, 1991. Body length 4.74. Carapace 2.78 long, 2.17 wide, 1.70 height. Abdomen 3.04 long, 1.39 wide, 1.44 height. Ocular area 1.05 long, 1.66 wide. Eye sizes and ocular distance: AME 0.34, ALE 0.15, PME 0.09, PLE 0.17; AME–AME 0.04, AME–ALE 0.07, PME–PME 1.34, ALE–ALE 1.49, PME–PLE 0.25, PLE–PLE 1.52, ALE–PME 0.09, ALE-PLE 0.74. Length of chelicerae 0.91 long, 0.53 wide. Clypeus height at AMEs 1.11. Sternum 1.03 long, 0.81 wide. Length of pedipalp and legs: pedipalp 2.76 [0.87, 0.32, 0.44, 1.13], I 6.93 [1.77, 0.68, 1.80, 1.76, 0.92], II 6.26 [1.80, 0.64, 1.53, 1.53, 0.76], III 6.11 [1.75, 0.56, 1.40, 1.57, 0.83], IV 8.76 [2.34, 0.73, 2.04, 2.64, 1.01]. Leg formula: 4123. Spination of pedipalp: femur pld 1 do 2, patella pld 1 do 1 rld 1, tibia do 1 rl 1, tarsus/cymbium pl 2 do 2 rl 1 rld 1; legs: femur I pld 1 do 5 rld 1, II pl 1 pld 1 do 4 rld 2, III pld 2 do 5 rld 2, IV pld 1 do 5 rld 2; patellae I–IV pld 1 rld 1; tibia I–IV pl 1 pld 1 plv 3 do 2 rl 1 rld 1 rlv 3; metatarsus I–IV pl 1 pld 3 plv 3 rl 1 rld 3 rlv 3. Pedipalp (Figures 2D–F): tibia longer than wide, RTA biramous, anterior ramus oriented to 1 o’ clock ventrally, joined to tibia by continuous broad base, medially curly and tapers to the tip. Posterior ramus pointed 5 o'clock ventrally, attached to tibia by socket like structure, curved frontaly at the tip. VTA small, sub triangular with smooth anterior edge, directed to 1 o’ clock ventrally. Dorsal tibial margin sclerotised to a sharp tip. Cymbium protruded down retrolaterally, rco small, dorsally triangular, perpendicular to cymbium. The dco prominent, developed to a left-curved spiny structure. Tegular furrow inverted J-shaped.
 Female: See Wijesinghe, 1991.
 Distribution. India (present data) and Sri Lanka (the type locality) (Figure 3; Wijesinghe, 1991; WSC, 2023).
mm.
description: Published as part of Jose, Athira, Tripathi, Rishikesh & Sudhikumar, Ambalaparambil Vasu, 2023, First records of the genera Anarrhotus Simon, 1902 and Gelotia Thorell, 1890 from India (Araneae: Salticidae), pp. 1-7 in Peckhamia 299 (1) on pages 4-5, DOI: 10.5281/zenodo.10831414