cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Interpolating between positive and completely positive maps: a new hierarchy of entangled states
Creators: name: Siudzińska, Katarzyna
name: Chakraborty, Sagnik
name: Chruściński, Dariusz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A new class of positive maps is introduced. It interpolates between positive and completely positive maps. It is shown that this class gives rise to a new characterization of entangled states. Additionally, it provides a refinement of the well-known classes of entangled states characterized in term of the Schmidt number. The analysis is illustrated with examples of qubit maps.
Near-Infrared Coronagraphic Observations of the T Tauri Binary System UY Aur
Creators: name: Hioki, Tomonori
name: Itoh, Yoichi
name: Oasa, Yumiko
name: Fukagawa, Misato
name: Kudo, Tomoyuki
name: Mayama, Satoshi
name: Funayama, Hitoshi
name: Hayashi, Masahiko
name: Hayashi, Saeko S.
name: Pyo, Tae-Soo
name: Ishii, Miki
name: Nishikawa, Takayuki
name: Tamura, Motohide
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a near-infrared image of UY Aur, a 0.9" separated binary system, using the Coronagraphic Imager with Adaptive Optics on the Subaru Telescope. Thanks to adaptive optics, the spatial resolution of our image was ~0.1" in the full width at half maximum of the point spread function, the highest achieved. By comparison with previous measurements, we estimated that the orbital period is ~1640 yrs and the total mass of the binary is ~1.73 solar mass. The observed H-band magnitude of the secondary varies by as much as 1.3 mag within a decade, while that of the primary is rather stable. This inconstancy may arise from photospheric variability caused by an uneven accretion rate or from the rotation of the secondary. We detected a half-ring shaped circumbinary disk around the binary with a bright southwest part but a barely detectable northeast portion. The brightness ratio is ~57. Its inner radius and inclination are about 520 AU and 42, respectively. The disk is not uniform but has remarkable features, including a clumpy structure along the disk, circumstellar material inside the inner cavity, and an extended armlike structure. The circumstellar material inside the cavity probably corresponds to a clump or material accreting from the disk onto the binary. The armlike structure is a part of the disk, created by the accretion from the outer region of the disk or encounters with other stellar systems.
description: 16 pages, 6 figures; accepted for publication in AJ
Scaling laws for step bunching on vicinal surfaces: the role of the dynamical and chemical effects
Creators: name: Benoit--Maréchal, Lucas
name: Jabbour, Michel E.
name: Triantafyllidis, Nicolas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the evolution of step bunches on vicinal surfaces using a thermodynamically consistent step-flow model that (i) circumvents the quasistatic approximation that prevails in the literature by accounting for the dynamics of adatom diffusion on terraces and attachment-detachment at steps (referred to as the dynamical effect), and (ii) generalizes the expression of the step chemical potential by incorporating the necessary coupling between the diffusion fields on adjacent terraces (referred to as the chemical effect). Having previously shown that these effects can explain the onset of step bunching without recourse to the inverse Ehrlich-Schwoebel (iES) barrier or other extraneous mechanisms, we are here interested in the evolution of step bunches beyond the linear-stability regime. In particular, the numerical resolution of the step-flow problem yields a robust power-law coarsening of the surface profile, with the bunch height growing in time as $H\sim t^{1/2}$ and the minimal interstep distance as a function of the number of steps in the bunch cell obeying $\ell_{min}\sim N^{-2/3}$. Although these exponents have previously been reported, this is the first time such scaling laws are obtained in the absence of an iES barrier or adatom electromigration. In order to validate our simulations, we take the continuum limit of the discrete step-flow system, leading to a novel nonlinear evolution equation for the surface height. We investigate the existence of self-similar solutions of this equation and confirm the 1/2 coarsening exponent obtained numerically for $H$. We highlight the influence of the combined dynamical-chemical effect and show that it can be interpreted as an effective iES barrier in the standard BCF theory. Finally, we use a Padé approximant to derive an analytical expression for the velocity of steadily moving step bunches and compare it to numerical simulations.
description: 14 pages, 9 figures
Singlet fermion dark matter and electroweak baryogenesis with radiative neutrino mass
Creators: name: Babu, K. S.
name: Ma, Ernest
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The model of radiative neutrino mass with dark matter proposed by one of us is extended to include a real singlet scalar field. There are then two important new consequences. One is the realistic possibility of having the lightest neutral singlet fermion (instead of the lightest neutral component of the dark scalar doublet) as the dark matter of the Universe. The other is a modification of the effective Higgs potential of the Standard Model, consistent with electroweak baryogenesis.
description: 9 pages, no figures
title: Population Structure Of Sebastes Mentella In The North-East Arctic
Creators: name: Saborido-Rey, Fran
name: Nedreaas, Kjell H.
Publisher: name: ASC 1998 - AA
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.At present time it is considered the existence of only one management unit of S. mentella in Northeast Atlantic. In present paper a morphometric analysis is made to compare specimens from different locations and different time of the year. Residuals of the regression between each morphometric variable and standard length are used as input in a Stepwise Discriminant Analysis. Results show a possible different population structure in the area, with three main regions morphometrically different: Svalbard, Barents Sea and Norwegian Sea and Lofoten area being an intermediate area where fish from the other areas are present at different seasons of the year. A previously described spawning migration pattern is also possible to detect from the present analysis and its implication on survey design is discussed.
Real-Time RGBD Odometry for Fused-State Navigation Systems
Creators: name: Willis, Andrew R.
name: Brink, Kevin M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This article describes an algorithm that provides visual odometry estimates from sequential pairs of RGBD images. The key contribution of this article on RGBD odometry is that it provides both an odometry estimate and a covariance for the odometry parameters in real-time via a representative covariance matrix. Accurate, real-time parameter covariance is essential to effectively fuse odometry measurements into most navigation systems. To date, this topic has seen little treatment in research which limits the impact existing RGBD odometry approaches have for localization in these systems. Covariance estimates are obtained via a statistical perturbation approach motivated by real-world models of RGBD sensor measurement noise. Results discuss the accuracy of our RGBD odometry approach with respect to ground truth obtained from a motion capture system and characterizes the suitability of this approach for estimating the true RGBD odometry parameter uncertainty.
CUDA-accelerated Computational Fluid Dynamics (NVIDIA Webinar)
Creators: name: Janßen, Christian F.
name: Mierke, Dennis
name: Gehrke, Martin
name: Asmuth, Henrik
Publisher: name: Zenodo
Year: 2019

description: This webinar discusses how NVIDIA GPUs and NVIDIA CUDA can enable high-fidelity Computational Fluid Dynamics for Higher Education and Research. Flow field computations for transient and turbulent flow problems are very compute-intensive and time-consuming. Popular existing numerical techniques often compromise on the underlying physics or require a massive amount of computational resources. Accurate high-fidelity CFD simulations on locally available hardware hence are highly appreciated by academia and industry. After a brief review of the theoretical basics and implementation details of a CUDA-accelerated CFD solver, results from several international research projects are presented. They all demonstrate that GPU computing can be a game changer for state-of-the art research projects in many relevant areas of Computational Fluid Dynamics.
Architectural Visualization Using Virtual Reality: A User Experience in Simulating Buildings of a Community College in Bukidnon, Philippines
Creators: name: Grepon, Benzar Glen
name: Martinez, Aldwin Lester
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: The study aims to design and develop a virtual structural design that simulates the campus and its buildings of a community college in Bukidnon, Philippines through Virtual Reality. With the immersion of technology, this project represents the architectural design of the establishment with the use of Virtual Reality Technology. The project uses a modified Iterative Development Model which is a guide for the design and development of the 3D Models and VR Application. TinkerCAD which is a web-based application has been used to design buildings on the other hand Unity is used to develop the structural designs of the buildings. The respondents of this study are the Grade 12 Senior High students from the 4 schools which are geographically near to the college. With this study, the researchers were able to showcase its VR Application to the students and later evaluated using a System Usability Scale, a 10 item questionnaire measuring usability with an overall average of 90% or Point Score of 4.5 which is interpreted as excellent in a Likert table for descriptive interpretation. With the use of the VR application potential students of the college will be able to visualize and experience the present structures of the college without being physically present in the area. In this paper, the buildings and structures of NBCC were designed and developed through a Virtual Reality Platform allowing students from different secondary schools that are geographically near to the college to experience the feeling to be in the school without being able to set a step in physically.
description: 19 pages
The effects of reading-while-listening and the cloze procedure on the reading ability and grammatical proficiency of ESL students
Creators: name: Tennant, Susan Mary
Publisher: name: University of British Columbia
Year: 2010

description: This study investigated the effects of repeated reading-while-listening in conjunction with cloze exercises on the reading ability and grammatical proficiency of 14 secondary level English as a Second Language students. The experimental group completed 17 cloze exercises at the rate of one per week. The method of presentation had three steps: the viewing of a film strip while listening to the accompanying commercially-produced tape, an attempt to complete a short written cloze exercise (every 10th word deleted) on a passage transcribed from the tape, and four attempts to complete the cloze exercise while simultaneously listening to the taped, unmutilated version. The Gates-MacGinitie Reading Test, Level E, and the Structure Test—English Language, Advanced Level were administered both before and after the treatment period. A teacher-constructed reading/listening cloze posttest and an attitude questionnaire were administered after the treatment. Separate analyses of covariance indicated a significant difference between the experimental group and the control group on the Gates-MacGinitie Reading Test, F (1,26) = 6.997, P <.014, but no significant difference between the groups on the Structure Test-English Language, F (1,26) = 1.306, P < .265. An independent samples t-test indicated a significant difference between the experimental group and the control group on the teacher-constructed reading/listening cloze, t(25) = 3.67, P <. Student responses to the attitude questionnaire indicated that they regarded the cloze exercises as helpful. It is recommended that the type of cloze exercises investigated in the present study be used as supplementary exercises for ESL students. It is noted that further research should be done on the effects of choosing passages for the grammatical points which they contain and the effects of repeating vocabulary and/or content in the passages.
A Height Gap Theorem For Finite Subsets Of GL_d(\bar{Q}) and Non Amenable Subgroups
Creators: name: Breuillard, Emmanuel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 20G25, 22E40

description: We show a global adelic analog of the classical Margulis Lemma from hyperbolic geometry. We introduce a conjugation invariant normalized height $\hat{h}(F)$ of a finite set of matrices $F$ in $GL_{n}(\bar{\Bbb{Q}})$ which is the adelic analog of the minimal displacement on a symmetric space. We then show, making use of theorems of Bilu and Zhang on the equidistribution of Galois orbits of small points, that $\hat{h}(F)>ε$ as soon as $F$ generates a non-virtually solvable subgroup of $SL_{n}(\bar{\Bbb{Q}}),$ where $ε=ε(n)>0$ is an absolute constant.
Quantifying quantum coherence of optical cat states
Creators: name: Zhang, Miao
name: Kang, Haijun
name: Wang, Meihong
name: Xu, Fengyi
name: Su, Xiaolong
name: Peng, Kunchi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Optical cat state plays an essential role in quantum computation and quantum metrology. Here, we experimentally quantify quantum coherence of an optical cat state by means of relative entropy and l_1 norm of coherence in Fock basis based on the prepared optical cat state at rubidium D1 line. By transmitting the optical cat state through a lossy channel, we also demonstrate the robustness of quantum coherence of optical cat state in the presence of loss, which is different from the decoherence properties of fidelity and Wigner function negativity of the optical cat state. Our results confirm that quantum coherence of optical cat states is robust against loss and pave the way for the application with optical cat states.
Kinetic ferromagnetism on a kagome lattice
Creators: name: Pollmann, F.
name: Fulde, P.
name: Shtengel, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study strongly correlated electrons on a kagome lattice at 1/6 and 1/3 filling. They are described by an extended Hubbard Hamiltonian. We are concerned with the limit |t|<
description: 4 pages, 2 color eps figures; updated version published in Phys. Rev. Lett.; one reference added
title: The Influence Of Physical Factors On The Distribution Of Lesser Sandeej, Ammodytes Marinus And Its Relevance To Fishing Pressure In The North Sea
Creators: name: Wright, P.J.
name: Pedersen, S.A.
name: Donald, L.
name: Anderson, C.
name: Lewy, P.
name: Proctor, R.
Publisher: name: ASC 1998 - AA
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.Sandeels burrow and overwinter in sandy substrates and are both an important component of the North Sea ecosystem and the. subject qf the largest fishery in this region. Due to their commercial and eposystem importance there is concern about the impact of sandeel harvesting on prey availability to. marine predators, particularly in certain key areas for wildlife. As a precursor to evaluatir;ig !peal impacts, this study investigates the appropriate spatial scales at which. to assess sane.lee! population dynamics and considers the relationship between local density and total stock bi.omass in areas of differing habi.tat quality. The study uses a habitat quality index devel.oped from a previous study of habitat preferences, together with data on sediment characteristics, depth and water velocity to map potential habitat in the North Sea. This information is then used to examine regional and temporal variation in commercial catch and effort over the North Sea with respect to the inferred extent and quality of habitat. The study demonstrates that spatial differences in fishery landings can largely be explained by the distributiqn of suitable habitat. - In particular, the three mo.st important areas for fishery landings coincide witti.geographically discrete areas of habitat. The study also demonstrates that inter­annualvariationin.the local density of aggregations is related to habitat quality.
Quasi-solid state microscopic dynamics in equilibrium classical liquids: Self-consisnent relaxation theory
Creators: name: Mokshin, A. V.
name: Khusnutdinoff, R. M.
name: Vilf, Ya. Z.
name: Galimzyanov, B. N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In the framework of the concept of time correlation functions, we develop a self-consistent relaxation theory of the transverse collective particle dynamics in liquids. The theory agrees with well-known results in both the short-wave (free particle dynamics) and the long-wave (hydrodynamic) limits. We obtain a general expression for the spectral density~$C_T(k,ω)$ of transverse particle current realized in the range of wave numbers $k$. In domain of microscopic spatial scales comparable to action scale of effective forces of interparticle interaction, the theory reproduces a transition from a regime with typical equilibrium liquid dynamics to a regime with collective particle dynamics where properties similar to solid-state properties appear: effective shear stiffness and transverse (shear) acoustic waves. In the framework of the corresponding approximations, we obtain expressions for the spectral density of transverse particle current for all characteristic regimes in equilibrium collective dynamics. We obtain expressions for dispersion law for transverse (shear) acoustic waves and also relations for the kinematic shear viscosity $ν$, the transverse speed of sound $v^{(T)}$, and the corresponding sound damping coefficient $Γ^{(T)}$. We compare the theoretical results with the results of atomic dynamics simulations of liquid lithium near the melting point.
description: 28 pages, 4 figures
Data stewardship wizard
Creators: name: Pergl, Robert
name: Suchánek, Marek
name: Slifka, Jan
name: Vojtěch Knaisl
name: Hooft, Rob
name: Kuzak, Mateusz
Publisher: name: F1000 Research Limited
Year: 2019

description: The development of the Data Stewardship Wizard is a project that is ongoing since 2016.The Wizard gets more and more attention in life sciences as well as other domains where scientists need to efficiently work with data as a key element of their projects. In the last year, we released a new generation of the Wizard with brand new features and increased usability. This development has largely been done as part of the ELIXIR Implementation Study on Data Management Planning. Currently, new versions of the Wizard are released monthly. The most visible recent changes are FAIR metrics evaluation, customizable templates for data management plans, question tagging, and external service integrations. Under the hood there are other changes such as a redesigned editor and knowledge model migrations, toggling of the privacy of questionnaires, and a secure internal mailer. We also did a lot of work on documentation and simplification of deployment. The interest, valuable ideas, and positive feedback from researchers across scientific disciplines, both academic and commercial, is very rewarding and we look forward to a new year with a full backlog of other interesting features.
Teaching labs for blind students: equipment to measure standing waves on a string
Creators: name: Lisboa, A.
name: Peña, F. J.
name: Negrete, O.
name: Dib, C. O.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics Education (physics.ed-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: We designed a Physics Teaching Lab experience for blind students to measure the wavelength of standing waves on a string. Our adaptation consisted of modifying the determination of the wavelength of the standing wave, which is usually done by visual inspection of the nodes and antinodes, using the sound volume generated by a guitar pickup at different points along the string. This allows one of the blind students at our University to participate simultaneously as their classmates in the laboratory session corresponding to the wave unit of a standard engineering course.
title: On Some Peculiarities Of Baltic Cod Distribution In Relation To Its Migrations Model
Creators: name: Karasiova, E.
Publisher: name: ASC 1998 - AA
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. The following literature data were considered: 1) on spatial dynamics of East-Baltic cod eggs abwtdance in 1967-1976; 2) on seasonal variability of length and age composition of adult cod in commercial catches from different areas of the Baltic Sea. It is shown that the extent of the trend. towards cod eggs abundance increase in ichthyoplankton during aeration years as compared to stagnation years, revealed by Grauman (1984), was the highest one in southern Gotland Deep and the lowest one in the Bomholm Deep. Though periods of massive cod spawning in these areas coinsided, the trends of spawners length composition seasonal variability were oposite which was most evident during aeration years. It is supposed that the above said peculiarities ,of distribution may evidence the existence of pre-spawning migration of cod from Bornholm Deep into Gotland Deep during the years of inflows which may occure in near-bottom layers in winter or ell!ly spring following inflow waters distribution> The assumption is made that increase of older age groups proportion (and associated increase of eggs diameter) is favourable for young fish survival only in the years of cod pre-spawning migrations into Gotland Deep, where cod distributes in more deep. and less salinity layers, that in Bornholm Deep. During stagnation years massive migration of cod into southern areas and transfer from bottom into pelagic habitats increase the effect of factors promoting decrease of stock abundance. Behaviour of migrating component of cod stock dependent on environmental conditions seems to be one of the major processes determining recruitment abundance.
Critical phenomena in a highly constrained classical spin system: Neel ordering from the Coulomb phase
Creators: name: Pickles, T. S.
name: Saunders, T. E.
name: Chalker, J. T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Many classical, geometrically frustrated antiferromagnets have macroscopically degenerate ground states. In a class of three-dimensional systems, the set of degenerate ground states has power-law correlations and is an example of a Coulomb phase. We investigate Neel ordering from such a Coulomb phase, induced by weak additional interactions that lift the degeneracy. We show that the critical point belongs to a universality class that is different from the one for the equivalent transition out of the paramagnetic phase, and that it is characterised by effective long-range interactions; alternatively, ordering may be discontinuous. We suggest that a transition of this type may be realised by applying uniaxial stress to a pyrochlore antiferromagnet.
description: 4 pages, 3 figures
The Hijazi inequality on conformally parabolic manifolds
Creators: name: Große, Nadine
Publisher: name: arXiv
Year: 2008
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C27 (Primary) 53C21 (Secondary)

description: We prove the Hijazi inequality, an estimate for Dirac eigenvalues, for complete manifolds of finite volume. Under some additional assumptions on the dimension and the scalar curvature, this inequality is also valid for elements of the essential spectrum. This allows to prove the conformal version of the Hijazi inequality on conformally parabolic manifolds if the spin analog to the Yamabe invariant is positive.
Electromagnetic field quantization in an anisotropic and inhomogeneous magnetodielectric
Creators: name: Amooshahi, M.
name: Kheirandish, F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The electromagnetic field in an anisotropic and inhomogeneous magnetodielectric is quantized by modelling the medium with two independent quantum fields. Some coupling tensors coupling the electromagnetic field with the medium are introduced. Electric and magnetic polarizations are obtained in terms of the ladder operators of the medium and the coupling tensors explicitly. Using a minimal coupling scheme for electric and magnetic interactions, the Maxwell equations and the constitutive equations of the medium are obtained. The electric and magnetic susceptibility tensors of the medium are calculated in terms of the coupling tensors. Finally the efficiency of the approach is elucidated by some examples.
description: 19 pages
2nd Place Solution for IJCAI-PRICAI 2020 3D AI Challenge: 3D Object Reconstruction from A Single Image
Creators: name: Cao, Yichen
name: Wei, Yufei
name: Liu, Shichao
name: Xu, Lin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In this paper, we present our solution for the {\it IJCAI--PRICAI--20 3D AI Challenge: 3D Object Reconstruction from A Single Image}. We develop a variant of AtlasNet that consumes single 2D images and generates 3D point clouds through 2D to 3D mapping. To push the performance to the limit and present guidance on crucial implementation choices, we conduct extensive experiments to analyze the influence of decoder design and different settings on the normalization, projection, and sampling methods. Our method achieves 2nd place in the final track with a score of $70.88$, a chamfer distance of $36.87$, and a mean f-score of $59.18$. The source code of our method will be available at https://github.com/em-data/Enhanced_AtlasNet_3DReconstruction.
description: 5 pages, 2 figures, 5 tables
The importance of activating student prior knowledge : elementary teachers' spontaneous and cued identifications of key concepts in narrative prose
Creators: name: Tonski, Jean
Publisher: name: University of British Columbia
Year: 2010

description: Elementary teachers' spontaneous (unaided) and cued identifications of key concepts in narrative prose were examined. Measures of the influences of exposure to research and attitudes toward the importance of prior knowledge on their cued identifications were investigated. Data were analyzed to determine the degree to which elementary teachers identified cued key concepts and primary teachers' identifications were compared to those of intermediate teachers. Separate and combined measures of teachers' exposure to reading research and attitudes were compared to their cued key concept identifications. A post hoc exploratory content analysis of the spontaneous key concept identifications was undertaken to discover possible patterns or phenomena in the data. Results of the analyses of cued concept identifications indicated: a) teachers were unable to successfully identify key concepts in narrative prose; b) there were no significant differences between primary and intermediate teachers' identifications; and c) exposure to reading research and attitudes towards the importance and use of prior knowledge and concept development influenced teachers' ability to identify key concepts. An examination of spontaneous key concept identifications showed that: a) there was a lack of teacher consensus as to definition of a key concept; and b) teachers were unable to identify passage-relevant key concepts when left to their own resources.
Isolate record for VAFB-ISO-671
Creators: name: Holloway, Corinne
Year: 1900
Subjects: subject: Santa Barbara (County)
valueUri: https://core.tdar.org/browse/geographic-keyword/3486/santa-barbara-county
subject: Vandenberg Air Force Base (VAFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85469/vandenberg-air-force-base-vafb
subject: Vandenberg Space Force Base (VSFB)
valueUri: https://core.tdar.org/browse/geographic-keyword/85584/vandenberg-space-force-base-vsfb
subject: California (State / Territory)
valueUri: https://core.tdar.org/browse/geographic-keyword/1484/california-state-territory
subject: Chipped Stone
valueUri: https://core.tdar.org/browse/material-type/2/chipped-stone
subject: Reconnaissance / Survey
valueUri: https://core.tdar.org/browse/investigation-type/7/reconnaissance-survey

description: This document is the isolated find record for VAFB-ISO-671. The artifact is a secondary flake.
Worksite HIV testing in Côte d'Ivoire: from medical power to social control
Creators: name: Bekelynck, Anne
Publisher: name: Zenodo
Year: 2019

description: The literature about workplace health initiatives generally stresses the mutual benefits of these programmes for employers and employees. This is also the case for HIV Counselling and Testing (HCT) workplace initiatives in sub-Saharan Africa. This article aims to critically analyse the worksite as a beneficial HIV testing place, questioning if the workplace – as a place characterized by its authority and dependency relationships – enables employees to freely consent to and participate in HIV testing. It questions which types of power occur in health worksite programmes in Sub-Saharan Africa, examining disciplinary power, pastoral power and managerial/neoliberal power. This study is based on a qualitative survey conducted over a period of 12 months (between November 2011 and May 2013) among 30 large private companies in Côte d'Ivoire (HIV prevalence 3.2% in 2015). This article argues that private companies still represent a constraining “apparatus,” which enables the use of disciplinary and pastoral power, specifically by medical staff upon low skilled employees. However, worksite HCT programmes can also give the employees (generally more skilled) the opportunity to increase the « techniques of the self » with regard to their own health via the normalization of HIV testing and the pressure of their colleagues’ social control. The example of the HIV/AIDS workplace programmes in Côte d’Ivoire illustrates the deep ambivalence of workplace health programmes, between public health opportunities and human rights risks.
description: https://www.ceped.org/wp
ЎЗБЕКИСТОН ИЧКИ ИШЛАР ОРГАНЛАРИДА БОШҚАРУВНИНГ НАЗАРИЙ ВА АМАЛИЙ ЖИҲАТЛАРИ
Creators: name: Саидов, Жасурбек
Publisher: name: Zenodo
Year: 2023

description: Сўнгги йилларида мамлакатимизда амалга оширилаётган ислоҳотлар давомида алоҳида эътибор ички ишлар органлари тизимини янада такомиллаштириш, аҳолига яқиндан хизмат кўрсатишни таъминлаш, замонавий хавф-хатарларни ҳисобга олган ҳолда куч ва воситаларни оқилона бошқаришга қаратилмоқда.
Gelfand-Dickey Algebra and Higher Spin Symmetries On $T^2=S^1\times S^1$
Creators: name: Sedra, M. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We focus in this work to renew the interest in higher conformal spins symmetries and their relations to quantum field theories and integrable models. We consider the extension of the conformal Frappat et al. symmetries containing the Virasoro and the Antoniadis et al. algebras as particular cases describing geometrically special diffeomorphisms of the two dimensional torus $T^2$. We show in a consistent way, and explicitly, how one can extract these generalized symmetries from the Gelfand-Dickey algebra. The link with Liouville and Toda conformal field theories is established and various important properties are discussed.
description: 22 pages
title: Ecological And Parasitologic Investigations On The Barents Sea Red King Crab Paralithodes Camtschatica (The First Results)
Creators: name: Bakay, Yu. I.
name: Kuzmin, S.A.
Publisher: name: ASC 1998 - AA
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.The paper presents preliminary results of parasitologic investigations on the red king crab Paralithodescamtschatica introduced into the Barents Sea and caught off the coast of the Kola and V arangerpeninsulas.
Degeneracy and coherent states of the two-dimensional Morse potential
Creators: name: Moran, James
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we construct coherent states for the two-dimensional Morse potential. We find the dependence of the spectrum on the physical parameters and use this to understand the emergence of accidental degeneracies. It is observed that, under certain conditions pertaining to the irrationality of the parameters, accidental degeneracies do not appear and as such energy levels are at most two-fold degenerate. After defining a non-degenerate spectrum and set of states for the 2D Morse potential, we construct generalised coherent states and discuss the spatial distribution of their probability densities and their uncertainty relations.
description: 9 pages, 6 figures
O PAPEL DOS CONCURSOS DE DESIGN NA FORMAÇÃO DE NOVOS TALENTOS NA MODA EM MINIATURA
Creators: name: Jacob, Marcelo
Publisher: name: Zenodo
Year: 2025

description: Marcelo Jacob é um designer de moda internacionalmente reconhecido por sua atuação inovadora e artesanal na criação de roupas exclusivas para bonecas de coleção. Com mais de 15 anos de experiência e mais de 2.000 designs desenvolvidos, destaca-se por unir alta costura, sustentabilidade e originalidade em cada peça, todas desenhadas e costuradas manualmente.Suas criações, aprovadas por marcas como Mattel e Integrity Toys, foram finalistas em competições de prestígio e exibidas em eventos internacionais como o Madrid Fashion Doll Show. Com presença digital estratégica e clientes em mais de 20 países, Marcelo Jacob também atua como jurado em concursos de design e inspira novos talentos com técnicas inovadoras e práticas sustentáveis.Entre suas obras icônicas, está o design da Pink Ibiza Party Barbie, que reflete sua capacidade de reinterpretar estilos clássicos com sofisticação contemporânea. Sua trajetória é marcada por um compromisso com a excelência artística, a responsabilidade ambiental e a valorização da moda como expressão cultural.
A binary with a $δ$~Scuti star and an oscillating red giant: orbit and asteroseismology of KIC9773821
Creators: name: Murphy, Simon J
name: Li, Tanda
name: Sekaran, Sanjay
name: Bedding, Timothy R.
name: Yu, Jie
name: Tkachenko, Andrew
name: Colman, Isabel
name: Huber, Daniel
name: Hey, Daniel
name: Baratashvili, Tinatin
name: Janssens, Soetkin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the $δ$ Scuti -- red giant binary KIC9773821, the first double-pulsator binary of its kind. It was observed by \textit{Kepler} during its four-year mission. Our aims are to ascertain whether the system is bound, rather than a chance alignment, and to identify the evolutionary state of the red giant via asteroseismology. An extension of these aims is to determine a dynamical mass and an age prior for a $δ$ Sct star, which may permit mode identification via further asteroseismic modelling. We determine spectroscopic parameters and radial velocities (RVs) for the red giant component using HERMES@Mercator spectroscopy. Light arrival-time delays from the $δ$ Sct pulsations are used with the red-giant RVs to determine that the system is bound and to infer its orbital parameters, including the binary mass ratio. We use asteroseismology to model the individual frequencies of the red giant to give a mass of $2.10^{+0.20}_{-0.10}$ M$_{\odot}$ and an age of $1.08^{+0.06}_{-0.24}$ Gyr. We find that it is a helium-burning secondary clump star, confirm that it follows the standard $ν_{\rm max}$ scaling relation, and confirm its observed period spacings match their theoretical counterparts in the modelling code MESA. Our results also constrain the mass and age of the $δ$ Sct star. We leverage these constraints to construct $δ$ Sct models in a reduced parameter space and identify four of its five pulsation modes.
description: Accepted for publication in MNRAS
On the Fundamental Equation of Nonequilibrium Statistical Physics -- Nonequilibrium Entropy Evolution Equation and the Formula for Entropy Production Rate
Creators: name: Xing, Xiu-San
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this paper we presented an overview on our works. More than ten years ago, we proposed a new fundamental equation of nonequilibrium statistical physics in place of the present Liouville equation. That is the stochastic velocity type's Langevin equation in 6N dimensional phase space or its equivalent Liouville diffusion equation. This equation is time-reversed asymmetrical. It shows that the form of motion of particles in statistical thermodynamic systems has the drift-diffusion duality, and the law of motion of statistical thermodynamics is expressed by a superposition of both the law of dynamics and stochastic velocity and possesses both determinism and probability. Hence it is different with the law of motion of particles in dynamical systems. Starting from this fundamental equation the BBGKY diffusion equation hierarchy, the Boltzmann collision diffusion equation, the hydrodynamic equations such as the mass drift-diffusion equation, the Navier-Stokes equation and the thermal conductivity equation have been derived and presented here. What is more important, we first constructed a nonlinear evolution equation of nonequilibrium entropy density in 6N, 6 and 3 dimensional phase space, predicted the existence of entropy diffusion. This evolution equation reveals that the time rate of change of nonequilibrium entropy density originates together from its drift, diffusion and production in space. Furthermore, we presented a formula for entropy production rate (i.e. the law of entropy increase), proved that internal attractive force in nonequilibrium system can result in entropy decrease while internal repulsive force leads to another entropy increase, obtained an unified theoretical expression for thermodynamic degradation and self-organizing evolution, and revealed that the entropy diffusion mechanism caused the system to approach to equilibrium.
description: 37 pages, 1 figure. arXiv admin note: substantial text overlap with arXiv:0710.4624
On properties of the space of quantum states and their application to construction of entanglement monotones
Creators: name: Shirokov, M. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider two properties of the set of quantum states as a convex topological space and some their implications concerning the notions of a convex hull and of a convex roof of a function defined on a subset of quantum states. By using these results we analyze two infinite-dimensional versions (discrete and continuous) of the convex roof construction of entanglement monotones, which is widely used in finite dimensions. It is shown that the discrete version may be 'false' in the sense that the resulting functions may not possess the main property of entanglement monotones while the continuous version can be considered as a 'true' generalized convex roof construction. We give several examples of entanglement monotones produced by this construction. In particular, we consider an infinite-dimensional generalization of the notion of Entanglement of Formation and study its properties.
description: 34 pages, the minor corrections have been made
title: Assessments Of The Lesser Sandeel (Ammodytes Marinus) In The North Sea Based On Revised Stock Divisions
Creators: name: Pedersen, S. A.
name: Lewy, P.
name: Wright, P.
Publisher: name: ASC 1998 - AA
Year: 2024
Subjects: Fisheries and aquaculture
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.Recent investigations suggest that the current treatment of North Sea sandeel (Ammodytes marinus) as a single unit stock may have little biological basis. In order to study regional effects of the fishery on North Sea lesser sandeel it may therefore be important to assess stock dynamics for the different aggregations. Based on a geographically division of the North Sea in a number of proposed assessment regions, regional as well as whole North Sea sandeel assessments are presented based on revised data ( e.g. catch in numbers at age and effort). A better understanding of sandeel growth is important for stock and catch predictions because previous studies indicate that the variability of mean weight-at-age is one of the most important factors influencing the precision of predictions. The Danish weight-at-age data of sandeel is re-analysed in order to estimate the mean weight-at-age in the catch and the stock and the precision of the estimates. The reliability of the sandeel assessments are discussed in relation to the data sources available and to the knowledge of sandeel biology and population structure in the North Sea.
title: Ενσωματωμένο σύστημα για πυροδότηση φωτογραφικού ΦΛΑΣ
title: Embedded system for photographic FLASH triggering
Creators: name: Κορδας Σωτηρης
Publisher: name: Technical University of Crete
Year: 2021

description: Η φωτογραφία αποτελεί ένα δημοφιλές επαγγελματικό πεδίο. Με χρήση ενσωματωμένων συστημάτων πυροδότησης ΦΛΑΣ έχει γίνει εφικτή η λήψη φωτογραφιών από φαινόμενα που εξελίσσονται πολύ γρήγορα και είναι αδύνατο να φωτογραφηθούν με συμβατικά μέσα από τον άνθρωπο. Υπάρχει όμως ακόμα η ανάγκη να αναπτυχθούν περισσότερα ασύρματα συστήματα πυροδότησης χαμηλού κόστους με μικρή καθυστέρηση. Σε αυτή την διπλωματική εργασία σχεδιάσαμε ένα τέτοιο ενσωματωμένο σύστημα το οποίο βασίζεται σε  πλακέτες ανάπτυξης της πλατφόρμας Arduino που χρησιμοποιούν μικροελεγκτές, σε πομποδέκτες ραδιοσυχνοτήτων και σε μετρήσεις αισθητήρων για την καταγραφή ενός γρήγορα εξελισσόμενου φαινομένου. Χρησιμοποιώντας αυτό το σύστημα έγιναν λήψεις φωτογραφιών από τρύπημα μπαλονιού, θραύση αντικειμένων, πρόσκρουση αντικειμένου σε υγρή επιφάνεια και ρίψη αυγού στο έδαφος. Καταφέραμε να πετύχουμε πυροδότηση σε χρόνο μικρότερο των 5 ms, συνολικό κόστος κατασκευής κάτω από 60$ και ασύρματη επικοινωνία όλων των επιμέρους υποσυστημάτων.
description: Photography is a popular field of profession. Through the use of embedded triggering systems for photographic FLASHES it is feasible to have images of rapidly unfolding phenomena that are impossible for humans to capture with conventional means. However, there is still need for developing more low cost and low latency wireless triggering systems. In this Diploma Thesis we designed such an embedded system based on microcontroller development boards of the Arduino platform, radio frequency transceivers and sensor measurements for the capturing of rapidly unfolding phenomena. Using this system, we shot pictures of popping balloons, breaking objects, objects falling on liquid surface and eggs thrown on the ground. We managed to have triggering with a latency lower than 5 ms, total cost lower than 60$ and wireless communication between every subsystem.
Time-optimal control of a two-level dissipative quantum system
Creators: name: Sugny, D.
name: Kontz, C.
name: Jauslin, H. R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose an analysis of the time-optimal control of a dissipative two-level quantum system whose dynamics is governed by the Lindblad equation. This simple system allows one to use tools of geometric control theory and to construct its optimal synthesis, i.e. to determine the set of all the optimal trajectories starting from a given initial point. We study different processes such as conversion of a pure state into a mixed state and purification of a mixed state. In particular cases, we show that dissipation is not undesirable and can help accelerating the control.
description: 25 pages, 10 figures
Role of corner flow separation in unsteady dynamics of hypersonic flow over a double wedge geometry
Creators: name: Kumar, Gaurav
name: De, Ashoke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: This study investigates the origin and sustenance of self induced oscillations of shock structures in a hypersonic flow over a double wedge configuration. Previously, various researchers have considered the double wedge flow configuration for inviscid flow with variations of different inflows as well as geometric parameters such as inflow Mach number , wedge angles, and wedge lengths. Few recently published articles reveal an unsteady flow physics involved with the hypersonic viscous flow for double wedge configuration with large second wedge angles. However, the reason for such self sustained flow oscillations is not completely clear. The present work seeks out to investigate the origin of such oscillations in a low enthalpy hypersonic flow with different aft wedge angles and wedge length ratios.In the current study, viscous flow over a double wedge at Mach 7 and fore wedge angle of 30° is considered. An improved version of rhoCentralFoam solver in OpenFOAM is used to investigate the double wedge flow over different grid resolutions in the separation region and shock shock interaction region. This study corroborates the observation from the previous literature with an improvement in the range of parameters which results in a self sustained periodic oscillation. The present study also suggests that the unsteadiness becomes possible when the incidence shock is in the proximity of the aft wedge expansion corner as a consequence of different wedge length ratios(L1/L2) or aft wedge angles (θ2). Flow can still be steady at a large aft wedge angle if the incidence shock is far ahead of the aft wedge expansion corner.