cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
3He-Driven Mixing in Low-Mass Red Giants: Convective Instability in Radiative and Adiabatic Limits
Creators: name: Denissenkov, Pavel A.
name: Pinsonneault, Marc
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the stability and observational consequences of mixing induced by 3He burning in the envelopes of first ascent red giants. We demonstrate that there are two unstable modes: a rapid, nearly adiabatic mode that we cannot identify with an underlying physical mechanism, and a slow, nearly radiative mode that can be identified with thermohaline convection. We present observational constraints that make the operation of the rapid mode unlikely to occur in real stars. Thermohaline convection turns out to be fast enough only if fluid elements have finger-like structures with a length to diameter ratio l/d > 10. We identify some potentially serious obstacles for thermohaline convection as the predominant mixing mechanism for giants. We show that rotation-induced horizontal turbulent diffusion may suppress the 3He-driven thermohaline convection. Another potentially serious problem for it is to explain observational evidence of enhanced extra mixing. The 3He exhaustion in stars approaching the red giant branch (RGB) tip should make the 3He mixing inefficient on the asymptotic giant branch (AGB). In spite of this, there are observational data indicating the presence of extra mixing in low-mass AGB stars similar to that operating on the RGB. Overmixing may also occur in carbon-enhanced metal-poor stars.
description: 25 pages, 6 figures, modified version, accepted by ApJ
Jet performance at the Circular electron-positron Collider
Creators: name: Lai, Pei-Zhu
name: Ruan, Manqi
name: Kuo, Chia-Ming
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Jet reconstruction is critical for the precision measurement of Higgs boson properties and the electroweak observables at the CEPC. We analyze the jet energy and angular responses of benchmark 2- and 4-jet processes with fully simulated samples with the CEPC baseline detector geometry. We observe a relative resolution of 3.5$\%$ and 1$\%$ on the jet energy and angular measurement for jets in the detector barrel region ($|cosθ| < 0.6$) with energy greater than 60 GeV. Meanwhile, the jet energy/angular scale can be controlled within 0.5/0.01$\%$. The differential dependences of the jet response on the jet direction and energy are extracted. We also analyze the impact on the jet responses induced by different jet clustering algorithms and matching criteria, which yields a relative difference of up to 8$\%$.
Spaser and Optical Amplification Conditions in Graphene-Coated Active Wires
Creators: name: Prelat, Leila
name: Cuevas, Mauro
name: Passarelli, Nicolás
name: Marún, Raúl Bustos
name: Depine, Ricardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This work analyzes the optical properties of a localized surface plasmon (LSP) spaser made of a dielectric active wire coated with a graphene monolayer. Our theoretical results, obtained by using rigorous electromagnetic methods, illustrate the non-radiative transfer between the active medium and the localized surface plasmons of the graphene. In particular, we focus on the lasing conditions and the tunability of the LSP spaser in two cases: when the wire is made of an infrared/THz transparent dielectric material and when it is made of a metal-like material. We analyze the results by comparing them with analytical expressions obtained by us using the quasistatic approximation. We show that the studied systems present a high tunability of the spaser resonances with the geometrical parameters as well as with the chemical potential of the graphene.
A geostatistical analysis of the Venus Mine, Yukon Territory
Creators: name: Stubens, Thomas Camillo
Publisher: name: University of British Columbia
Year: 2010

description: This thesis describes a geostatistical analysis of the Venus deposit in the Yukon Territory. The Venus Mine is located on Tagish Lake, approximately 1.5 miles north of the Yukon/B.C. border. It is a gold, silver, lead, zinc bearing quartz vein of late Cretaceous to early Tertiary age occurring in porphyritic andesite of the Mount Nansen Group volcanics. Three companies have attempted to mine Venus since its discovery in the late 1890's. In all three cases the operating company could not profitably mine the deposit and was forced to shut down. Overestimation of the ore reserves and problems with grade control were the main problems encountered by the failed operations. The study reported here applied a well-established geostatistical methodology to the Venus deposit. Over 3500 chip samples of the vein, collected at regular intervals along all development drifts and raises, were used in this analysis. Semi-variograms were calculated of 3 variables: vein thickness, gold accumulation and silver accumulation. After fitting semi-variogram models to the calculated curves the 3 variables were kriged and the results were plotted on maps showing the kriged estimates in each of the 2039 blocks. The maps illustrate clearly the size, location and orientation of the ore zones. The ore reserves of the Venus mine were calculated using the kriged block estimates. The proven and probable reserves above a cut-off of $130/ton (Cdn), assuming gold and silver prices of $520/oz (Cdn) and $7.80/oz (Cdn) are 108,577 tons grading 0.3 oz Au/ton (+/- 1.18%) and 6.05 oz Ag/ton (+/- 1.29%). Interpretation of the maps and the ore reserve estimates led the author to make several recommendations for future mining of the Venus deposit.
The Second Stars
Creators: name: Herwig, Falk
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The ejecta of the first probably very massive stars polluted the Big Bang primordial element mix with the first heavier elements. The resulting ultra metal-poor abundance distribution provided the initial conditions for the second stars of a wide range of initial masses reaching down to intermediate and low masses. The importance of these second stars for understanding the origin of the elements in the early universe are manifold. While the massive first stars have long vanished the second stars are still around and currently observed. They are the carriers of the information about the first stars, but they are also capable of nuclear production themselves. For example, in order to use ultra or extremely metal-poor stars as a probe for the r-process in the early universe a reliable model of the s-process in the second stars is needed. Eventually, the second stars may provide us with important clues on questions ranging from structure formation to how the stars actually make the elements, not only in the early but also in the present universe. In particular the C-rich extremely metal-poor stars, most of which show the s-process signature, are thought to be associated with chemical yields from the evolved giant phase of intermediate mass stars. Models of such AGB stars at extremely low metallicity now exist, and comparison with observation show important discrepancies, for example with regard to the synthesis of nitrogen. This may hint at burning and mixing aspects of extremely metal-poor evolved stars that are not yet included in the standard picture of evolution, as for example the hydrogen-ingestion flash. The second stars of intermediate mass may have also played an important role in the formation of heavy elements that form through slow neutron capture reaction chains (s-process). Comparison of models with observations reveal which aspects of the physics input and assumptions need to be improved. The s-process is a particularly useful diagnostic tool for probing the physical processes that are responsible for the creation of elements in stars, like for example rotation. As new observational techniques and strategies continue to penetrate the field, for example the multi-object spectroscopy, or the future spectroscopic surveys, the extremely metal-poor stars will play an increasingly important role to address some of the most fundamental and challenging, current questions of astronomy.
description: Biermann award 2004 lecture, AG meeting, Prague
title: Microsatellites For Assessment Of Genetic Variation And Improvement Of Hatchery PractICES In Salmonid Populations
Creators: name: Aho, Teija
name: Piironen, Jorma
name: Ranta, Esa
name: Primmer, Craig R.
Publisher: name: ASC 1998 - K
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.The persistence of landlocked salmon Salmo salar m. sebago (Girard) in Lake Saimaa (South East Finland) is entirely dependent on stocking activities. In this study, we use six microsatellite loci which have previously been shown to be highky polymorphic in Atlantic salmon, to examine the existing level of genetic variability both in hatchery brood stocks and in annually wild-caught mature land-locked salmon .. Microsatellites are ideal for the study of endangered species because they are highly polymorphic, and only very small amounts of DNA are required, allowing non-fatal sampling oflive fish. Use of microsatellites for assessing genetic variation will also allow kinship analysis of the fish, and also enable more accurate designs of breeding programs in captivity. This is essential.for conservation of endangered fish populations.
title: The Use Of Microsatellite Markers For Parentage Analysis In The Pacific Cupped Oyster, Crassostrea Gigas (Thunberg)
Creators: name: Boudry, P.
name: Collet, B.
name: Kotoulas, G.
name: Magoulas, A.
name: Hervouet, V.
name: Bonhomme, F.
name: Gérard, A.
Publisher: name: ASC 1998 - K
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Highly polymorphic genetic markers can be useful tools for the analysis of parental contributions. The present paper reports 3 experiments using microsatellite markers to analyse parental contributions in controlled in vitro factorial crosses of the cupped oyster Crassostrea gigas. Parentage analysis was eased by the large polymorphism observed at the 3 loci studied. In a cross between 20 males and 20 females, a quarter of the progeny could be assigned to a given parent using a single microsatellite locus showing 28 alleles. In 3 crosses between 5 males and females, all the progeny could be assigned to a family by using 3 loci. In all cases, the combined genotyping at 2 loci allowed parentage to be determined. unambiguously. Despite the balanced gametic contribution of each parent before fertilisation, unbalanced parental contributions are observed in the progeny, both at larval and juvenile stages. Evidence of gametic and zygotic competition is given to explain the observed unbalanced parental contributions.
Promoting the Acquisition of Hardware Reverse Engineering Skills
Creators: name: Wiesen, Carina
name: Becker, Steffen
name: Paar, Nils Albartus Christof
name: Rummel, Nikol
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: This full research paper focuses on skill acquisition in Hardware Reverse Engineering (HRE) - an important field of cyber security. HRE is a prevalent technique routinely employed by security engineers (i) to detect malicious hardware manipulations, (ii) to conduct VLSI failure analysis, (iii) to identify IP infringements, and (iv) to perform competitive analyses. Even though the scientific community and industry have a high demand for HRE experts, there is a lack of educational courses. We developed a university-level HRE course based on general cognitive psychological research on skill acquisition, as research on the acquisition of HRE skills is lacking thus far. To investigate how novices acquire HRE skills in our course, we conducted two studies with students on different levels of prior knowledge. Our results show that cognitive factors (e.g., working memory), and prior experiences (e.g., in symmetric cryptography) influence the acquisition of HRE skills. We conclude by discussing implications for future HRE courses and by outlining ideas for future research that would lead to a more comprehensive understanding of skill acquisition in this important field of cyber security.
Statistical Evidence for Three classes of Gamma-ray Bursts
Creators: name: Chattopadhyay, Tanuka
name: Misra, Ranjeev
name: Chattopadhyay, Asis Kumar
name: Naskar, Malay
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Two different multivariate clustering techniques, the K-means partitioning method and the Dirichlet process of mixture modeling, have been applied to the BATSE Gamma-ray burst (GRB) catalog, to obtain the optimum number of coherent groups. In the standard paradigm, GRB are classified in only two groups, the long and short bursts. However, for both the clustering techniques, the optimal number of classes was found to be three, a result which is consistent with previous statistical analysis. In this classification, the long bursts are further divided into two groups which are primarily differentiated by their total fluence and duration and hence are named low and high fluence GRB. Analysis of GRB with known red-shifts and spectral parameters suggests that low fluence GRB have nearly constant isotropic energy output of 10^{52} ergs while for the high fluence ones, the energy output ranges from 10^{52} to 10^{54} ergs. It is speculated that the three kinds of GRBs reflect three different origins: mergers of neutron star systems, mergers between white dwarfs and neutron stars, and collapse of massive stars.
description: 7 pages, accepted for publication in the Astrophysical Journal. Minor editorial changes
Overcoming timestep limitations in boosted-frame Particle-In-Cell simulations of plasma-based acceleration
Creators: name: Shapoval, Olga
name: Lehe, Remi
name: Thévenet, Maxence
name: Zoni, Edoardo
name: Zhao, Yinjian
name: Vay, Jean-Luc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Explicit electromagnetic Particle-In-Cell (PIC) codes are typically limited by the Courant- Friedrichs-Lewy (CFL) condition, which implies that the timestep multiplied by the speed of light must be smaller than the smallest cell size. In the case of boosted-frame PIC simulations of plasma-based acceleration, this limitation can be a major hinderance as the cells are often very elongated along the longitudinal direction and the timestep is thus limited by the small, transverse cell size. This entails many small-timestep PIC iterations, and can limit the potential speed-up of the boosted-frame technique. Here, by using a CFL-free analytical spectral solver, and by mitigating additional numerical instabilities that arise at large timestep, we show that it is possible to overcome traditional limitations on the timestep and thereby realize the full potential of the boosted-frame technique over a much wider range of parameters.
title: First Finding Of Polymorphism At Esterase D Loci In The Baltic Salmon (Salmo Salar L.)
Creators: name: Vasin, O.
Publisher: name: ASC 1998 - K
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Esterase D loci was studied for the Baltic salmon. This lo.ci is diagnostic for identification of salmon, sea trout and their hybrids. This loci is known to be monomorphic almost in the whole Atlantic salmon areal including the Baltic Sea and lake populations. Polymorphism at this loci is described by some authors in a limited North-Eastern Atlantic region, namely at the Kola Peninsula, as well as in the Northern Norway. This loci was considered as one of the most important characteristics to differentiate Baltic salmon from the mentioned populations of the North-Eastern Atlantics. Our samples were collected from the offshore fisheries in the Eastern Baltic Sea (SD 28). 2112 Baltic salmon specimen were investigated using polyacrylarnide gel electrophoresis in TEB buffer system. We found 3 heterozygous individuals at esterase D loci. Most probable we have found the same slow allele that was described for the North-Eastern Atlantics. The mean frequency of slow allele in the. Baltic Sea is low. On the other hand, we exactly know that esterase D loci is monomorphic in Latvian rivers and in the Neva river (Russia). Therefore, polymorphism at esterase D loci is distributed irregularly among populations of the Baltic salmon. This fact allows to assume that the frequency of slow allele may be higher for certain populations, than it is for the mean one in our sample from offshore fisheries where feeding salmon from different populations mix. Nowadays polymorphism at esterase D loci is most likely to be in the Northern Baltic for populations in the main salmon rivers with high effective size, and especially, in those rivers, where natural spawning remains, possibly, first of all in the Tornio river. Polymorphism at esterase D loci in the Baltic Sea even at low frequencies well shows the possibility of gene flow among the populations of the North-Eastern Atlantics and some Baltic populations in the Baltic salmon microevolutional history.
Cosmological parameters from WMAP 5-year temperature maps
Creators: name: Lewis, Antony
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I calculate a hybrid cross-power spectrum estimator from the WMAP 5-year CMB temperature maps, discuss the goodness of fit, and then constrain cosmological parameters. The spectrum and results are generally consistent with previous results, though the power spectrum error bars are slightly smaller and there are small shifts at high ell. The small improvement in error bars is obtained at very low numerical cost but does not significantly improve parameter constraints. I discuss the accuracy of the likelihood model and how constraints on the optical depth translate into constraints on the reionization history allowing for helium reionization. In the appendices I propose a simple reionization parameterization that determines the history in terms of a mid-point reionization redshift, and suggest a new likelihood approximation for chi-squared-like distributions with varying skewness.
description: Fixed typo in B3. Code and data available at http://cosmologist.info/weightmixer/
หาเวลาอ่านหนังสือแล้วนำมาเล่าสู่กันฟัง
Creators: name: อุทัย  ดุลยเกษม
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2552

description: 2, 2, วารสารเทคโนโลยีภาคใต้
من رأسمالية المساهمين إلى رأسمالية أصحاب المصلحة: جائحة COVID-19 والتحول الاقتصادي العالمي
Creators: name: وليد سلام جميل
Publisher: name: figshare
Year: 2021
Subjects: subject: Economics
subject: 140210 International Economics and International Finance
subject: FOS: Economics and business
subject: 140213 Public Economics- Public Choice
subject: 140199 Economic Theory not elsewhere classified
subject: 130203 Economics, Business and Management Curriculum and Pedagogy
subject: FOS: Educational sciences

description: التوقعات تشير إلى أن التوقعات تشير إلى ارتفاع توقعاتك في تقدير التوقعات. فيروس كورونا المستجد ، بتسريع وتيرة التغيير من قبل. عالم المحاكمات العالمي؟ وهل تتحول وهل سيتغير شكل الإقتصاد العالمي؟ ... جميع هذه التساؤلات وأكثر تشغل العالم اليوم. نحاول التوقف عند السؤال الثالث ، بالإقتصاد العالمي ، إذ تشير إلى أننا نفهمه وتفكيكه ، يبيّن لنا الصورة العامة عن باقي التساؤلات بشكل عام.يرى الكثير من المحللين والخبراء في العالم ، بأننا في سلسلة من التحديات التي واجهها العالم والبشرية منذ الحرب العالمية الثانية حتى يومنا هذا. ظهرت جائحة كوفيد -19 عن هشاشة الأنظمة العالمية ، انقضاءات في الصراعات والتقسيم. فقد كان هناك عدد من الرسائل التي تراها في الصناعات الاقتصادية والصحية. يجد القادة في كل قطاع - الحكومة ، الأعمال التجارية ، والمجتمع المدني- أنفسهم عند مفترق طرق عصيب. علينا حشد جميع فئات مجتمعنا العالمي لصالحنا ولصالح الأجيال القادمة. إذا لم يبدأ بالاعتراف بالشكل الحقيقي ، فإن نظرنا في نظامنا الحالي في خذلاننا .نظريتها في نظرها ، نظريتها في نظرها ، نظريتها في نظرها ، هي أفضل طريقة ، أعلى قدر من الأداء العام للشركة.أي نوع من الرأسمالية نريد؟ قد يكون هذا هو السؤال المحدد لعصرنا. إذا أردنا أن برنامجنا الاقتصادي للأجيال القادمة ، يجب علينا الإجابة بشكل صحيح.
(0,2) Gauged Linear Sigma Model on Supermanifold
Creators: name: Okame, Yusuke
name: Hayashi, Mitsuo J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct (0,2), D=2 gauged linear sigma model on a supermanifold in both the Abelian gauge group and the non-Abelian gauge group. The $\hat{U}$ operator provides consistency conditions for satisfying the SUSY invariance. Contrary to the Abelian gauge group, it is not essential to introduce the new operator in order to check the exact SUSY invariance of the Lagrangian density. However, in order to introduce the (0,2) chiral superfields, we need the $\hat{U}$ operator, because we can not define the (0,2) chirality conditions of the (0,2) chiral superfields without introducing the new operator by using $\hat{U}$ and the enlarged operator \hat{U}^{a} was obtained from the conditions that yield the (0,2) supersymmetric invariance of the Lagrangian density of the (0,2) U(N) gauged linear sigma model in superfield formalism. We found that the consistency conditions for the Abelian gauge group which assure the (0,2) supersymmetric invariance of Lagrangian density agree with (0,2) chirality conditions for superpotential. The supermanifold \mathcal{M}^{m|n} becomes the super weighted complex projective space WCP^{m-1|n} in U(1) case, which is considered as an example of Calabi-Yau supermanifold.
description: 19 pages, no figures, Verification of component fields are deleted
Carrier multiplication yields in CdSe and CdTe nanocrystals by transient photoluminescence
Creators: name: Nair, Gautham
name: Bawendi, Moungi G
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Engineering semiconductors to enhance carrier multiplication (CM) could lead to increased photovoltaic cell performance and a significant widening of the materials range suitable for future solar technologies. Semiconductor nanocrystals (NCs) have been proposed as a favourable structure for CM enhancement, and recent measurements by transient absorption have shown evidence for highly efficient CM in lead chalcogenide and CdSe NCs. We report here an assessment of CM yields in CdSe and CdTe NCs by a quantitative analysis of biexciton and exciton signatures in transient photoluminescence decays. Although the technique is particularly sensitive due to enhanced biexciton radiative rates relative to the exciton, kradBX > 2 kradX, we find no evidence for CM in CdSe and CdTe NCs up to photon energies E > 3 Eg, well above previously reported relative energy thresholds.
description: 9 pages, 6 figures
Supersymmetric N=1 Spin(10) Gauge Theory with Two Spinors via a-Maximization
Creators: name: Kawano, Teruhiko
name: Yagi, Futoshi
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give a detailed analysis of the superconformal fixed points of four-dimensional N=1 supersymmetric Spin(10) gauge theory with two spinors and vectors by using a-maximization procedure.
description: 24 pages, 4 figures, harvmac
จริยธรรมการท่องเที่ยว
Creators: name: ฉลองศรี  พิมลสมพงศ์
Publisher: name: วิทยาลัยเทคโนโลยีภาคใต้
Year: 2552

description: 1, 2, วารสารเทคโนโลยีภาคใต้
Surface theory of a second-order topological insulator beyond the Dirac approximation
Creators: name: Levitan, B. A.
name: Goutte, L.
name: Pereg-Barnea, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the surface states and chiral hinge states of a 3D second-order topological insulator in the presence of an external magnetic gauge field. Surfaces pierced by flux host Landau levels, while surfaces parallel to the applied field are not significantly affected. The chiral hinge modes mediate spectral flow between neighbouring surfaces. As the magnetic field strength is increased, the surface Landau quantization deviates from that of a massive Dirac cone. Quantitatively, the $n = 0$ Landau level falls inside the surface Dirac gap, and not at the gap edge. The $n \ne 0$ levels exhibit a further, qualitative discrepancy: while the massive Dirac cone is expected to produce pairs of levels ($\pm n$) which are symmetric around zero energy, the $n$ and $-n$ levels become asymmetric in our lattice model -- one of the pair may even be absent from the spectrum, or hybridized with the continuum. In order to resolve the issue, we extend the standard 2D massive Dirac surface theory, by including additional Hamiltonian terms at $\mathcal{O} (k^2)$. While these terms do not break particle-hole symmetry in the absence of magnetic field, they lead to the aforementioned Landau level asymmetry once the magnetic field is applied. We argue that similar $\mathcal{O}(k^2)$ correction terms are generically expected in lattice models containing gapped Dirac fermions, using the BHZ model of a 2D topological insulator as an example.
description: 10 pages, 7 figures
Ground state of the time-independent Gross-Pitaevskii equation
Creators: name: Dion, Claude M.
name: Cances, Eric
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a suite of programs to determine the ground state of the time-independent Gross-Pitaevskii equation, used in the simulation of Bose-Einstein condensates. The calculation is based on the Optimal Damping Algorithm, ensuring a fast convergence to the true ground state. Versions are given for the one-, two-, and three-dimensional equation, using either a spectral method, well suited for harmonic trapping potentials, or a spatial grid.
Isolate record for VAFB-ISO-679
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-679. The artifact is a projectile point.
RELIKE: Reionization Effective Likelihood from Planck 2018 Data
Creators: name: Heinrich, Chen
name: Hu, Wayne
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We release RELIKE (Reionization Effective Likelihood), a fast and accurate effective likelihood code based on the latest Planck 2018 data that allows one constrain any model for reionization between $6 < z < 30$ using five constraints from the CMB reionization principal components (PC). We tested the code on two example models which showed excellent agreement with sampling the exact Planck likelihoods using either a simple Gaussian PC likelihood or its full kernel density estimate. This code enables a fast and consistent means for combining Planck constraints with other reionization data sets, such as kinetic Sunyaev-Zeldovich effects, line-intensity mapping, luminosity function, star formation history, quasar spectra, etc, where the redshift dependence of the ionization history is important. Since the PC technique tests any reionization history in the given range, we also derive model-independent constraints for the total Thomson optical depth $τ_{\rm PC} = 0.0619^{+0.0056}_{-0.0068}$ and its $15\le z \le 30$ high redshift component $τ_{\rm PC}(15, 30) < 0.020 $ (95\% C.L.). The upper limits on the high-redshift optical depth is a factor of $\sim3$ larger than those reported in the Planck 2018 cosmological parameter paper using the FlexKnot method and we validate our results with a direct analysis of a two-step model which permits this small high-$z$ component.
description: 15 pages, 14 figures
Stochastic analysis of an agent-based model
Creators: name: Veglio, A.
name: Marsili, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We analyze the dynamics of a forecasting game which exhibits the phenomenon of information cascades. Each agent aims at correctly predicting a binary variable and he/she can either look for independent information or herd on the choice of others. We show that dynamics can be analitically described in terms of a Langevin equation and its collective behavior is described by the solution of a Kramers' problem. This provides very accurate results in the region where the vast majority of agents herd, which corresponds to the most interesting one from a game theoretic point of view.
description: 6 pages, 2 figures
The role of mineral surface composition and hydrophobicity in polysaccharide/mineral interactions
Creators: name: Liu, Qi
Publisher: name: University of British Columbia
Year: 2010

description: The interactions of polysaccharides (dextrin, amylopectin and carboxymethyl cellulose (CMC)) with variously modified quartz samples were investigated using floatability, wettability, electrokinetic and adsorption tests, supplemented by conventional titration and infrared spectroscopic studies. The quartz samples were treated either by methylation (rendered hydrophobic), lead coating (introduction of metallic adsorption centres), or both forms of surface modification. The presence of metal ionic sites on a quartz surface played a decisive role in polysaccharide adsorption. The adsorption densities of both dextrin and CMC on lead-coated quartz were both much higher and much more pH-dependent than those on uncoated quartz. The "hydrophobic bonding" of dextrin with mineral surfaces as reported in the literature was not observed with hydrophobic (methylated) quartz. However, if the quartz contained surface lead ionic sites and was also methylated, it adsorbed more dextrin than unmethylated, lead-coated quartz. This was also true for the adsorption of CMC onto similarly modified quartz samples. To obtain a rational understanding of the importance of metal ions in polysaccharide adsorption, studies of the solution chemistry of polysaccharides and metal ions were conducted. CMC co-precipitated with both metal cations and metal hydroxy complexes, (including metal hydroxides), whereas dextrin co-precipitated only with metal hydroxides. Co-precipitation involving either polysaccharide caused a decrease in the solution pH. Dextrin-metal co-precipitation occurred at pH optima of 7.5, 8, 9, 11, and 12 for ferric, aluminum, cupric, lead and magnesium ions, respectively. Infrared spectroscopic studies of the precipitates revealed the elimination of glucose ring deformation, suggesting a chemical basis for the interaction between dextrin and metal hydroxides. The surfaces of sulphide minerals behaved like hydroxide during dextrin adsorption. Since copper and lead hydroxides form over different pH ranges, the pH ranges for optimum adsorption of dextrin on copper sulphides and lead sulphides were different. The results of preliminary flotation tests indicated that dextrin could be utilized in the differential flotation of Cu-Pb sulphides. Small scale flotation tests conducted on synthetic mixtures of chalcopyrite and galena confirmed this point.
title: Benefits, Limitations, And Risks Of Transgenic Fish For Aquaculture
Creators: name: Devlin, Robert H.
Publisher: name: ASC 1998 - K
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.Transgenic fish have now been produced with a variety of gene constructs designed to modify commercially-important characteristics with the goal of improving production efficiency in aquaculture. To date, growth enhancement has been most intensively investigated and has produced transgenic strains with commercial potential as well as serving as living model systems for risk assessments. We have produced transgenic coho salmon that have been growth accelerated with a gene construct composed of the metallothionein-B promoter fused to the full-length, type-1 growth hormone (GH) gene. These constructs were developed only from salmon gene components to improve genetic functioning of the transgene, and to utilize only DNA sequences and expressed products (salmon GH is not biologically active in higher vertebrates) that are naturally consumed from wild salmon. This construct promotes rapid acceleration of growth such that transgenic coho salmon are approximately I I-fold heavier than their control siblings after one year of growth. The transgene also induces an acceleration of development, resulting in a transformation to the smolt form in six rather than 15 months of age. The transgenes are integrated into the genome of the salmon at variable copy numbers, and, from F 1 and subsequent generations, are transmitted through the gerruline to progeny in a stable fashion. Individual families of transgenic salmon display characteristic growth rates suggesting that the structure and location of the inserted transgene can influence the levelof expression. In some of the most rapidly growing transgenic salmon, cranial and opercular abnormalitie􀆤 in the form of overgrowth of cartilage have been observed, a condition analogous to acromegaly seen in mammalian systems where GH is experimentally or pathologically overproduced.·· To alleviate these abnormalities, new strains of salmon have been produced that utilize a weaker promoter in the GH gene constructs - this has effectively reduced the inci()ence of abnormalities in different families. Concern exists regarding the potential impacts thai escaped transgenic fish may have on wild populations, although currently little data exists to evaluate the true risk. Impacts of transgenic fish would depend on several factors including the number of animals involved, their geographic proximity, and nltimately on the fitness of transgenic fish relative to their wild conspecincs. We have begun examining a number of fitness parameters and have found that growth-accelerated coho salmon have poorer swimming ability, higher feeding motivation, and greater fecundity. Because of the difficulty in predicting the true relative fitness of an aquatic organism in natural ecosystems, effective physical and biological containment methods must be developed to allow safe implementation of this technology.
Additional file 1 of A high fat diet with a high C18:0/C16:0 ratio induced worse metabolic and transcriptomic profiles in C57BL/6 mice
Creators: name: Wang, Liqiang
name: Xu, Fei
name: Song, Zhenfeng
name: Han, Dan
name: Zhang, Jingyi
name: Chen, Linjun
name: Na, Lixin
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Computational Biology

description: Additional file 1: Supplementary Methods-GC-MS conditions and method performance. Table S1. Composition of diets (g/1000 g diets). Table S2. The changes in the body weight in mice. Table S3. Comparisons of body composition in mice. Table S4. The total body fat ratio and liver fat ratio in mice. Table S5. The levels of fasting serum indices in mice. Table S6. Liver fatty acids profile in mice. Figure S1. Indirect calorimetry of mice for consecutive 72 h. a, Energy expenditure. b, Carbohydrate oxidation. c, Fatty acid oxidation. d, Respiratory exchange rates. NFD, normal fat diet group; HSF, high stearic acid diet group (C18:0/ C16:0 = 1:2); LSF, low stearic acid diet group (C18:0/ C16:0 = 1:8). EE, energy expenditure. RER, respiratory exchange rate. N = 6 for each group. *P < 0.05, compared with NFD group; #P < 0.05, compared wtih LSF group. Figure S2. Oral glucose tolerance test of mice. NFD, normal fat diet group; HSF, high stearic acid diet group (C18:0/ C16:0 = 1:2); LSF, low stearic acid diet group (C18:0/ C16:0 = 1:8). N = 10 for each group. *P < 0.05, compared with NFD group at the same time point; #P < 0.05, compared wtih LSF group at the same time point. NFD, normal fat diet group; HSF, high stearic acid diet group (C18:0/ C16:0 = 1:2); LSF, low stearic acid diet group (C18:0/ C16:0 = 1:8). Figure S3. Detection of cell ultra-structures in liver and pancreas by transmission electron microscopy. a-c, Changes in mitochondria in liver; d-f, Changes in insulin granules in pancreas. a and d, normal fat diet group; b and e, low stearic acid diet group (C18:0/ C16:0 = 1:8); c and f, high stearic acid diet group (C18:0/ C16:0 = 1:2). Figure S4. GO analyses of cellular component for the differentially expressed mRNAs in mice. a, c and e, Top ten fold enrichment terms of cellular components for mRNAs down-regulated. a, NFD vs. LFD; c, NFD vs. HFD; e, LFD vs. HFD. b, d and f, Top ten fold enrichment terms of cellular components for mRNAs up-regulated. b, NFD vs. LFD; d, NFD vs. HFD; f, LFD vs. HFD. The bar plot shows the top ten fold enrichment value of the significant enrichment terms. Figure S5. GO analyses of molecular function for the differentially expressed mRNAs in mice. a, c and e, Top ten fold enrichment terms of molecular functions for mRNAs down-regulated. a, NFD vs. LFD; c, NFD vs. HFD; e, LFD vs. HFD. b, d and f, Top ten fold enrichment terms of molecular functions for mRNAs up-regulated. b, NFD vs. LFD; d, NFD vs. HFD; f, LFD vs. HFD. The bar plot shows the top ten fold enrichment value of the significant enrichment terms.
FAST CAT: Collaborative Data Entry and Curation for Semantic Interoperability in Digital Humanities
Creators: name: Fafalios, Pavlos
name: Petrakis, Kostas
name: Samaritakis, Georgios
name: Doerr, Korina
name: Kritsotaki, Athina
name: Tzitzikas, Yannis
name: Doerr, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Descriptive and empirical sciences, such as History, are the sciences that collect, observe and describe phenomena in order to explain them and draw interpretative conclusions about influences, driving forces and impacts under given circumstances. Spreadsheet software and relational database management systems are still the dominant tools for quantitative analysis and overall data management in these these sciences, allowing researchers to directly analyse the gathered data and perform scholarly interpretation. However, this current practice has a set of limitations, including the high dependency of the collected data on the initial research hypothesis, usually useless for other research, the lack of representation of the details from which the registered relations are inferred, and the difficulty to revisit the original data sources for verification, corrections or improvements. To cope with these problems, in this paper we present FAST CAT, a collaborative system for assistive data entry and curation in Digital Humanities and similar forms of empirical research. We describe the related challenges, the overall methodology we follow for supporting semantic interoperability, and discuss the use of FAST CAT in the context of a European (ERC) project of Maritime History, called SeaLiT, which examines economic, social and demographic impacts of the introduction of steamboats in the Mediterranean area between the 1850s and the 1920s.
description: This is a preprint of an article accepted for publication at the ACM Journal on Computing and Cultural Heritage (JOCCH)
Bounds for the minimum diameter of integral point sets
Creators: name: Kurz, Sascha
name: Laue, Reinhard
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C10, 11D99

description: Geometrical objects with integral sides have attracted mathematicians for ages. For example, the problem to prove or to disprove the existence of a perfect box, that is, a rectangular parallelepiped with all edges, face diagonals and space diagonals of integer lengths, remains open. More generally an integral point set $\mathcal{P}$ is a set of $n$ points in the $m$-dimensional Euclidean space $\mathbb{E}^m$ with pairwise integral distances where the largest occurring distance is called its diameter. From the combinatorial point of view there is a natural interest in the determination of the smallest possible diameter $d(m,n)$ for given parameters $m$ and $n$. We give some new upper bounds for the minimum diameter $d(m,n)$ and some exact values.
description: 8 pages, 7 figures; typos corrected
Visual Security Analytics
Creators: name: Böhm, Fabian
Publisher: name: Universität Regensburg
Year: 2021
Subjects: subject: Visual Security Analytics, Security Visualization
subject: 004 Informatik

description: Despite the application of increasingly advanced methods and technologies to automate tasks within cyber security, human domain knowledge remains indispensable. Especially monitoring a system’s security posture as well as detecting and analyzing cyber threats requires involvement of security experts. However, the large amount of data relevant for these tasks poses a major impediment for any kind of manual analyses. It is therefore necessary, to enable security experts to efficiently deal with large amounts of data. Visual Security Analytics (VSA) aims to achieve this through generating interactive visual representations of log data or any other data relevant for monitoring, ensuring, and preserving cyber security and covering different ways of analyzing security data using visual approaches (Marty 2009). It is a combination of automated and visual analysis aiming for a “best-of-both” worlds approach. Thus, VSA is a highly interdisciplinary field covering information security, security analytics, information visualization, and human-computer interaction among several others.
Designing and Implementing e-justice Systems: An Information Systems Approach to Regional Trial Court Case Docket Management in Northern Mindanao, Philippines
Creators: name: Grepon, Benzar Glen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Computer-based information systems for case management are still at an early stage of adoption in many trial courts in the Philippines. In most cases, information system implemented is the case docket using the official record book on which cases are written and inventory of cases and reports are generated. This is a standalone system that often face data processing, data security and case management challenges. However, there are examples of Information systems in overcoming these pitfalls and producing innovative solutions that surpass data management practices in in many trial courts in the country. One such case is the Regional Trial Court Branch 23 of Cagayan de Oro City in Northern Mindanao, Philippines. A project named Web-based Case Docket Information System (WCDIS) has been designed and developed for the court branch. This system uses a framework known as System Development Life Cycle (SDLC) which is a guide for the design and development. This paper also discusses the key system functionalities and the implementation methodology, including both the benefits and shortcomings of this approach, with the goal of applying lessons learned for future installations. Foremost among the successes of this project is its ability to increase efficiency and reliability in completing court transactions.
description: 11 pages
title: Progress Report On The Studies Of The Genetic Relationship Of Deep-Sea And Oceanic Sebastes Mentella In The Irminger Sea
Creators: name: Johansen, T.
name: Danielsdottir, A. K.
name: Meland, K.
name: Nævda, G.
Publisher: name: ASC 1998 - K
Year: 2024
Subjects: Fisheries and aquaculture
Technologies and data

description: No abstracts are to be cited without prior reference to the author.A joint venture between Iceland and Norway to study the beaked redfish, Sebastes mentella, in the Irminger Sea as well as the relationship to redfish in adjacent waters was undertaken in 1995. The genetic relationship of deep-sea and oceanic S. mentella in the Irrninger Sea was studied by gel electrophoresis and isoelectric focusing of haemoglobins and allozymes as well as various DNA techniques. The. results are compared. to earlier studies on redfish from Greenland and Icelandic waters. In the present report, tentative results from the enzyme and DNA analyses are presented.
PHANGS-ALMA: Arcsecond CO(2-1) Imaging of Nearby Star-Forming Galaxies
Creators: name: Leroy, Adam K.
name: Schinnerer, Eva
name: Hughes, Annie
name: Rosolowsky, Erik
name: Pety, Jérôme
name: Schruba, Andreas
name: Usero, Antonio
name: Blanc, Guillermo A.
name: Chevance, Mélanie
name: Emsellem, Eric
name: Faesi, Christopher M.
name: Herrera, Cinthya N.
name: Liu, Daizhong
name: Meidt, Sharon E.
name: Querejeta, Miguel
name: Saito, Toshiki
name: Sandstrom, Karin M.
name: Sun, Jiayi
name: Williams, Thomas G.
name: Anand, Gagandeep S.
name: Barnes, Ashley T.
name: Behrens, Erica A.
name: Belfiore, Francesco
name: Benincasa, Samantha M.
name: Bešlić, Ivana
name: Bigiel, Frank
name: Bolatto, Alberto D.
name: Brok, Jakob S. den
name: Cao, Yixian
name: Chandar, Rupali
name: Chastenet, Jérémy
name: Chiang, I-Da
name: Congiu, Enrico
name: Dale, Daniel A.
name: Deger, Sinan
name: Eibensteiner, Cosima
name: Egorov, Oleg V.
name: García-Rodríguez, Axel
name: Glover, Simon C. O.
name: Grasha, Kathryn
name: Henshaw, Jonathan D.
name: Ho, I-Ting
name: Kepley, Amanda A.
name: Kim, Jaeyeon
name: Klessen, Ralf S.
name: Kreckel, Kathryn
name: Koch, Eric W.
name: Kruijssen, J. M. Diederik
name: Larson, Kirsten L.
name: Lee, Janice C.
name: Lopez, Laura A.
name: Machado, Josh
name: Mayker, Ness
name: McElroy, Rebecca
name: Murphy, Eric J.
name: Ostriker, Eve C.
name: Pan, Hsi-An
name: Pessa, Ismael
name: Puschnig, Johannes
name: Razza, Alessandro
name: Sánchez-Blázquez, Patricia
name: Santoro, Francesco
name: Sardone, Amy
name: Scheuermann, Fabian
name: Sliwa, Kazimierz
name: Sormani, Mattia C.
name: Stuber, Sophia K.
name: Thilker, David A.
name: Turner, Jordan A.
name: Utomo, Dyas
name: Watkins, Elizabeth J.
name: Whitmore, Bradley
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present PHANGS-ALMA, the first survey to map CO J=2-1 line emission at ~1" ~ 100pc spatial resolution from a representative sample of 90 nearby (d
description: 76 pages, 33 figures. Accepted for publication in the Astrophysical Journal Supplement series. Full resolution version and the image atlas to appear as a figure set in the published version can be found https://sites.google.com/view/phangs/publications . Data release coming soon to the ALMA archive and CADC temporarily available at http://phangs.org/data