cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Settlement patterns of snow crab associated with warm and cold years in the Eastern Bering Sea
Creators: name: Hinckley, Sarah
name: Parada, C.
name: Ernst, B.
name: Orensanzs, L.
name: Armstrong, D.
name: Curchitser, E.
name: Hermann, A.
Publisher: name: ASC 2007 - Theme session B
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.An individual-based model for snow crab (Chionoecetes opilio) larvae coupled to a hydrodynamic model was implemented to study the transport and settlement patterns associated with warm (1979) and cold (1990) years in the Eastern Bering Sea (EBS). Oceanographic conditions from the hydrodynamic model were compared to near bottom temperature data from surveys (NBT) in order to validate the hydrodynamic model output. Both years presented oceanographic conditions with contrasting temperatures during the hatching, transport and settlement period (May to October) of snow crab. Several simulation experiments to assess the trajectory and potential settlement areas of virtual larvae released in the middle and outer domain of the EBS were performed. The simulation experiments considered initial conditions of crab larval release based on historical distributions of adult females inferred from annual bottom trawl surveys. The simulations experiments were run between May and October, releasing particles in eight regions. The behavior incorporated in the individual-based model for snow crab larvae included the release of particles representing snow crab larvae near the bottom, their movement upward in the water column to the mixed layer and then retention in the mixed layer until the time of potential settlement. Initial simulations showed that 1979 and 1990 presented similar overall potential settlement patterns, but very different temperatures patterns. Even though current patterns in both years are quite similar, the areas of potentially successful settlement differ due to these temperature differences. No transport towards the southeast (historical distribution areas) was seen in these simulations. These results may have implications for success of settlement of snow crab under different scenarios of climate change.
title: Effects of temperature and sex on jump performance and biomechanics in the lizard Anolis carolinensis
Creators: name: Lailvaux, SP
name: Irschick, DJ
Publisher: name: University of Massachusetts Amherst
Year: 2007
Subjects: subject: locomotion
subject: performance
subject: temperature
subject: lizard
subject: sex
subject: Biology

description: Temperature is known to affect whole-organism performance capacities significantly in ectotherms, but may potentially alter performance kinematics as well. Locomotor performance is a multivariate phenomenon, hence changes in temperature are probably reflected in multiple aspects of locomotion. We studied the thermal sensitivity of several kinetic and kinematic jump variables, including acceleration and power output, in male and female green anole lizards, Anolis carolinensis Voigt 1832. We hypothesized that temperature would have similar effects on kinetic and kinematic variables. We also tested the hypotheses that males and females would differ in jump performance, but only because of sexual dimorphism for body size, and that males and females would also differ in optimal performance temperature and body temperature (Tb) maintained in the field. Both kinetic and kinematic jump variables exhibited significant temperature dependence, as expected, suggesting that overall jump dynamics are altered by temperature in green anoles. Power, in particular, increased markedly over the 15–25 °C temperature range in males. Sex differences in jumping were driven largely by sexual dimorphism in body size. However, females exhibited significantly narrower thermal tolerance ranges than males, although they maintained a Tb similar to males in the field. These data illustrate the necessity of carefully controlling Tb during jumping experiments at single temperatures in ectotherms, as temperature affects a suite of kinematic and biomechanical traits determining overall jump performance.
Science Outreach Project. Divulgacion. SharingSciTech. Publication 6: “Guess: Best Human’s Friend? Dogs?”
Creators: name: Ruiz-Marquez, Eloisa
Publisher: name: OSF
Year: 2023
Subjects: basic science
cognition
cognitive sciences
divulgacion
neurociencia
neurosciences
psicología
psychology
research
science outreach
technology
tecnología

description: In 2010, the BBC published a documentary: “The secret life of the dog”, hosted by Steven Mackintosh, produced and directed by Dan Child. This documentary shows how scientists are trying to understand the bond between humans and dogs, and the origin of this relationship. If you have the chance, I really encourage you to watch...https://eloisasharingscitech.wordpress.com/2021/03/05/guess-best-humans-friend-dog-osin-mv-8527-8078/
Nanostructure thermal conductivity prediction by Monte Carlo sampling of phonon free paths
Creators: name: McGaughey, Alan J.H.
name: Jain, Ankit
Publisher: name: Carnegie Mellon University
Year: 2012
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: We propose a method by which the thermal conductivity of a nanostructure with arbitrary geometry can be predicted through Monte Carlo sampling of the free paths associated with phonon-phonon and phonon-boundary scattering. The required inputs are the nanostructure geometry and the bulk phonon frequencies, group velocities, and mean free paths. The method is applied to a thin film in the in-plane and cross-plane directions and to a polycrystalline bulk material. For the film, a faster approach to the bulk thermal conductivity is found compared to predictions made using the Matthiessen rule with the bulk mean free path and an average phonon-boundary scattering length.
Transverse Momentum Dependent Quasi-Parton-Distributions
Creators: name: Ji, Xiangdong
name: Jin, Lu-Chang
name: Yuan, Feng
name: Zhang, Jian-Hui
name: Zhao, Yong
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the transverse momentum dependent parton distributions (TMDs) in the quasi-parton-distribution framework. The long standing hurdle of the so-called pinch pole singularity from the space-like gauge links in the TMD definitions can be resolved by the finite length of the gauge link along the hadron moving direction. In addition, with the soft factor subtraction, the quasi-TMD is free of linear divergence. We further demonstrate that the energy evolution equation of the quasi-TMD a.k.a. the Collins-Soper evolution, only depends on the hadron momentum. This leads to a clear matching between the quasi-TMD and the standard TMDs.
description: 12 pages, 3 figures, matches to the published version
Electromagnetic corrections to the dominant two-pion exchange nucleon-nucleon potential
Creators: name: Kaiser, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate at two-loop order in chiral perturbation theory the electromagnetic corrections to the dominant two-pion exchange nucleon-nucleon interaction that is generated by the isoscalar $πN$ contact-vertex proportional to the large low-energy constant $c_3$. We find that the respective $2πγ$-exchange potential contains sizeable isospin-breaking components which amount to about -1% of the strongly attractive isoscalar central $2π$-exchange potential. The typical value of these novel charge-independence and charge-symmetry breaking central potentials is $0.3 $MeV at a nucleon distance of $r= m_π^{-1} = 1.4 $fm. Our analytical result for this presumably dominant $2πγ$-exchange interaction is in a form such that it can be easily implemented into phase-shift analyses and few-body calculations.
description: 7 pages, 1 figure, to be published in Physical Review C (2006): Brief Reports
title: ADCO, Sixième cartulaire de Saint-Étienne de Dijon (1662), Cart. 30 (G 133), 441 folios, f. 136
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 136, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Sixième cartulaire de Saint-Étienne de Dijon (1662), Archives départementales de la Côte-d'Or, Cart. 30 (G 133), 441 folios, f. 136, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Nanoscale thermal radiation between two gold surfaces
Creators: name: Shen, Sheng
name: Mavrokefalos, Anastassios
name: Poetro  Sambegoro
name: Chen, Gang
Publisher: name: Carnegie Mellon University
Year: 2012
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: In this letter, we measured the nanoscale thermal radiation between a microsphere and a substrate which were both coated with thick goldfilms. Although gold is highly reflective for thermal radiation, the radiative heat transfer between two goldsurfaces was demonstrated to be significantly enhanced at nanoscale gaps beyond the blackbody radiation limit due to the tunneling of non-resonant evanescent waves. The measured heat transfer coefficient between two goldsurfaces agreed well with theoretical prediction. At a gap d = 30 nm ± 5 nm, the heat transfer coefficient between two goldsurfaces was observed to be as large as ∼400 W/m2·K, much greater than the blackbody radiation limit (∼5 W/m2·K).
title: Vocabulary list for the Tai Paw dialect, part 3 of 3, items 2348 to 2896 from the EFEO-CNRS-SOAS questionnaire
title: Vocabulaire du dialecte tai paw, partie 3/3, items n° 2348 à 2896 du questionnaire EFEO-CNRS-SOAS
titleType: AlternativeTitle
title: Từ vựng thổ ngữ Lai Paw, phần 3/3, từ mục 2348 đến 2896 trong bảng hỏi của EFEO-CNRS-SOAS
titleType: AlternativeTitle
Creators: name: Ferlus, Michel
name: Trần, Trí Dõi
Publisher: name: COCOON - https://cocoon.huma-num.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2016
Subjects: subject: Tai Paw
subject: tpo

description: Tai Paw vocabulary, from word item 2347 to word item 2896, EFEO-CNRS-SOAS wordlist [from n°397.13 to n°471a following Ferlus's notation]. The survey was mainly conducted in Vietnamese.
description: Từ vựng tiếng Tai Paw, từ mục từ 2347 đến mục từ 2896 trong bảng từ của EFEO-CNRS-SOAS [từ số thứ tự 397.13 đến 471a theo kí hiệu của Ferlus]. Cuộc điều tra được dẫn dắt chủ yếu bằng tiếng Việt.
description: Conforms to: doi:10.34847/cocoon.49aefa90-8c1f-3ba8-a099-0ebefc6a2aa7
Molecular simulations and lattice dynamics determination of Stillinger-Weber GaN thermal conductivity
Creators: name: Liang, Zhi
name: Jain, Ankit
name: McGaughey, Alan J.H.
name: Keblinksi, Pawel
Publisher: name: Carnegie Mellon University
Year: 2015
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: The bulk thermal conductivity of Stillinger-Weber (SW) wurtzite GaN in the [0001] direction at a temperature of 300 K is calculated using equilibrium molecular dynamics (EMD), non-equilibrium MD (NEMD), and lattice dynamics (LD) methods. While the NEMD method predicts athermal conductivity of 166 ± 11 W/m·K, both the EMD and LD methods predict thermal conductivities that are an order of magnitude greater. We attribute the discrepancy to significant contributions to thermal conductivity from long-mean free path phonons. We propose that the Grüneisen parameter for low-frequency phonons is a good predictor of the severity of the size effects in NEMD thermal conductivity prediction. For weakly anharmonic crystals characterized by small Grüneisen parameters, accurate determination of thermal conductivity by NEMD is computationally impractical. The simulation results also indicate the GaN SW potential, which was originally developed for studying the atomic-level structure of dislocations, is not suitable for prediction of its thermal conductivity.
title: Near-real time validation of an operational hydrographic model
Creators: name: Cannaby, H.
name: Cure, M.
name: Lyons, K.
name: Nolan, G.
Publisher: name: ASC 2007 - Theme session B
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.The Irish Marine Institute maintains an operational model of the NE Atlantic from which weekly hydrographic forecasts are published on the institute’s web site. A method for the systematic validation of the operational model has been developed, making use of temperature and salinity profile data from ARGO floats, surface water temperature and salinity data from the Irish weather buoys and sea surface temperature data recorded by satellite microwave radiometers. Near-real time data from each of these sources are automatically downloaded from public access ftp sites and a statistical analysis of the model performance is undertaken. Sources of errors within the model output are identified and where possible reduced, through fine tuning of the model. The ability of the model to represent significant hydrodynamic features such as the shelf edge current and the location of frontal systems have been monitored on an ongoing basis. The reliability of model forecasts issued to date is illustrated and the potential impact of errors within the hydrodynamic model on a coupled ecosystem model discussed.
title: Safeguarding migrant rights through open digital ecosystem (ODE) principles
title: Safeguarding societal value in migration management: towards open-data principles and community-centricity
titleType: AlternativeTitle
Creators: name: Pai, Rohan
name: Amrita, Nanda
Publisher: name: Zenodo
Year: 2024
Subjects: Mixed Migration
Digital Technologies
Data Infrastructures
Open Digital Ecosystems
Open Data
Data Ethics
Migrant Rights

description: The presentation draws from Aapti Institute’s ongoing work on data infrastructures for mixed migration, reflecting on emerging insights through primary and secondary research conducted across three research case studies: the forced displacement of Rohingya refugees from Myanmar to Bangladesh; the economic migration of Nepalese workers to India; and Indian students traversing to Germany for higher education. By being anchored in these case studies, the presentation examines the untapped potential of data that can be harnessed through design principles of open digital ecosystems (ODEs) to enable diverse actors toa. Innovate anticipatory tools to forecast migration movements while safeguarding the rights of people on the moveb. Mitigate harms in the implementation and usage of technologies by relaying agency to migrant communities
Properties of magnetically supported dissipative accretion flow around black holes with cooling effects
Creators: name: Sarkar, Biplob
name: Das, Santabrata
name: Mandal, Samir
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We investigate the global structure of the advection dominated accretion flow around a Schwarzschild black hole where the accretion disc is threaded by toroidal magnetic fields. We consider synchrotron radiative process as an effective cooling mechanism active in the flow. With this, we obtain the global transonic accretion solutions by exploring the variety of boundary conditions and dissipation parameters, namely accretion rate (${\dot m}$) and viscosity ($α_B$). The fact that depending on the initial parameters, steady state accretion flows can possess centrifugally supported shock waves. These global shock solutions exist even when the level of dissipation is relatively high. We study the properties of shock waves and observe that the dynamics of the post-shock corona (hereafter, PSC) is regulated by the flow parameters. Interestingly, we find that shock solution disappears completely when the dissipation parameters exceed their critical values. We calculate the critical values of viscosity parameter ($α^{\rm cri}_B$) adopting the canonical values of adiabatic indices as $γ=4/3$ (ultra-relativistic) and $1.5$ (semi-non-relativistic) and find that in the gas pressure dominated domain, $α^{\rm cri}_B \sim 0.4$ for $γ=4/3$ and $α^{\rm cri}_B \sim 0.27$ for $γ=1.5$, respectively. We further show that global shock solutions are relatively more luminous compared to the shock free solutions. Also, we have calculated the synchrotron spectra for shocked solutions. When the shock is considered to be dissipative in nature, it would have an important implication as the available energy at PSC can be utilized to power the outflowing matter escaped from PSC. Towards this, we calculate the maximum shock luminosity and discuss the observational implication of our present formalism.
description: 15 pages, 12 figures, accepted for publication in MNRAS on September 25; comments welcome
Semiquantitative theory of electronic Raman scattering from medium-size quantum dots
Creators: name: Delgado, Alain
name: Gonzalez, Augusto
name: Lockwood, D. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A consistent semiquantitative theoretical analysis of electronic Raman scattering from many-electron quantum dots under resonance excitation conditions has been performed. The theory is based on random-phase-approximation-like wave functions, with the Coulomb interactions treated exactly, and hole valence-band mixing accounted for within the Kohn-Luttinger Hamiltonian framework. The widths of intermediate and final states in the scattering process, although treated phenomenologically, play a significant role in the calculations, particularly for well above band gap excitation. The calculated polarized and unpolarized Raman spectra reveal a great complexity of features and details when the incident light energy is swept from below, through, and above the quantum dot band gap. Incoming and outgoing resonances dramatically modify the Raman intensities of the single particle, charge density, and spin density excitations. The theoretical results are presented in detail and discussed with regard to experimental observations.
description: Submitted to Phys. Rev. B
Microsecond-sustained lasing from colloidal quantum dot solids
Creators: name: Adachi, Michael M.
name: Fengjia  Fan
name: Sellan, Daniel P.
name: Hoogland, Sjoerd
name: Voznyy, Oleksandr
name: Houtepen, Arjan J.
name: Parrish, Kevin D.
name: Pongsakorn  Kanjanaboos
name: Malen, Jonathan
Publisher: name: Carnegie Mellon University
Year: 2015
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Colloidal quantum dots have grown in interest as materials for light amplification and lasing in view of their bright photoluminescence, convenient solution processing and size-controlled spectral tunability. To date, lasing in colloidal quantum dot solids has been limited to the nanosecond temporal regime, curtailing their application in systems that require more sustained emission. Here we find that the chief cause of nanosecond-only operation has been thermal runaway: the combination of rapid heat injection from the pump source, poor heat removal and a highly temperature-dependent threshold. We show microsecond-sustained lasing, achieved by placing ultra-compact colloidal quantum dot films on a thermally conductive substrate, the combination of which minimizes heat accumulation. Specifically, we employ inorganic-halide-capped quantum dots that exhibit high modal gain (1,200 cm 1 ) and an ultralow amplified spontaneous emission threshold (average peak power of B50 kWcm 2) and rely on an optical structure that dissipates heat while offering minimal modal loss.
High-momentum tail and universal relations of a Fermi gas near a Raman-dressed Feshbach resonance
Creators: name: Qin, Fang
name: Jie, Jianwen
name: Yi, Wei
name: Guo, Guang-Can
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In a recent proposal [Jie and Zhang, Phys. Rev. A 95, 060701(R) (2017)], it has been shown that center-of-mass-momentum-dependent two-body interactions can be generated and tuned by Raman coupling the closed-channel bound states in a magnetic Feshbach resonance. Here we investigate the universal relations in a three-dimensional Fermi gas near such a laser modulated $s$-wave Feshbach resonance. Using the operator-product expansion approach, we find that, to fully describe the high-momentum tail of the density distribution up to $q^{-6}$ ($q$ is the relative momentum), four center-of-mass-momentum-dependent parameters are required, which we identify as contacts. These contacts appear in various universal relations connecting microscopic and thermodynamic properties. One contact is related to the variation of energy with respect to the inverse scattering length and determines the leading $q^{-4}$ tail of the high-momentum distribution. Another vector contact appears in the subleading $q^{-5}$ tail, which is related to the velocity of closed-channel molecules. The other two contacts emerge in the $q^{-6}$ tail and are respectively related to the variation of energy with respect to the range parameter and to the kinetic energy of closed-channel molecules. Particularly, we find that the $q^{-5}$ tail and part of the $q^{-6}$ tail of the momentum distribution show anisotropic features. We derive the universal relations and, as a concrete example, estimate the contacts for the zero-temperature superfluid ground state of the system using a mean-field approach.
description: 10 pages, 6 figures, update references, published version
Medium effects on phi decays to dilepton and kaon-antikaon pairs in relativistic heavy ion reactions
Creators: name: Santini, E.
name: Burau, G.
name: Faessler, Amand
name: Fuchs, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We consider the role of rescattering of secondary kaons on the dilepton branching ratio of the phi meson. In-medium mass modifications and broadening of kaons and phi mesons are taken into account. We find in the framework of a Bjorken scenario for the time evolution of the expanding fireball that the phi yield from dimuons is moderately or at least only slightly enhanced compared to that from kaon-antikaon pairs. The relation to experimental yields measured by the NA49, NA50 and CERES Collaborations at CERN SPS and the PHENIX Collaboration at RHIC is discussed.
description: 6 pages with 2 figures, accepted for publication in Eur. Phys. J. A
Publication - 2023 Looking back to see forward - Changes on Bahamian reefs
Creators: name: SEALEY, KATHLEEN
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310305
subject: Marine and estuarine ecology (incl. marine ichthyology)

description: Maintaining biodiversity over time is paramount to the functioning of coral reef e cosystems. Species abundance and richness change over time, but overall biodiversity supports ecosystem functions and services. A decrease in biodiversity can detrimentally impact reefs; phase shifts have the potential to fundamentally alter the dominance of stony corals and structure of reef communities. SCUBA diver photography can form important baseline information on both species- and taxa-level diversity trends on less-accessible reefs over decades. Historic photographs can be analyzed to form a complimentary timeline with more formal monitoring and sampling via benthic transects, point intercept, and visual surveys. This timeline may be especially important to understand long-term trends and subtle changes associated with climate change. An assessment of changes in reef benthos was carried out, combining scientific surveys with recreational underwater photographs from SCUBA divers beginning in 1980 to 2010. Reefs that were consistently visited in the Exuma Cays Land and Sea Park, The Bahamas were targeted for collecting photographs cataloged by date and dive site. The photography image database provided an exceptional opportunity to study key benthic species from 2,073 slides and 337 1-meter quadrats collected at five dive sites from 1980 to 2010. Changes in reef biodiversity with a focus on cnidarians, sponges, and annelids were evaluated with diversity indices and multivariate analyses using diver photos and more recently, 1-meter quadrat surveys, to evaluate community changes over time on deep (<−10 m) platform margin reefs.
Material composition and localized heat generation effects on conjugate heat removal from electronic components
Creators: name: Amon, Cristina H.
name: Nigen, Jay S.
name: Carnegie Mellon University.Engineering Design Research Center.
Publisher: name: Carnegie Mellon University
Year: 1994
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Abstract: "A time-dependent conjugate conduction/convection numerical study of four electronic component configurations that differ in material composition and distribution of internal heat generation is conducted in parallel PCBs (Printed Circuit Boards) for laminar and transitional Reynolds numbers. Both material composition and concentration of heat generation are found to affect the spatial distribution of temperature, heat flux, and Nusselt number along the solid-fluid interface. Furthermore, it is found that the distribution of internal heat generation strongly affects the convective resistance at the solid-fluid interface of the component. This leads, for the configurations with local heat generation, to a non-monotonic relationship between the convective heat transport and the Reynolds number for the range of parameters investigated. It is found that conjugate heat transfer can significantly affect the temperature distribution."
title: A Finite element approach for trajectory optimization in Wire-Arc Additive Manufacturing
title: Einsatz der Finite-Elemente-Methode zur Pfadoptimierung in Wire-Arc Additive Manufacturing
Creators: name: Schmidt, Johannes
name: Buhl, Johannes
name: Fügenschuh, Armin
Publisher: name: BTU  Cottbus - Senftenberg
Year: 2021
Subjects: subject: 518 Numerische Analysis

description: In wire-arc additive manufacturing (WAAM), the desired workpiece is built layerwise by a moving heat source depositing droplets of molten wire on a substrate plate. To reduce material accumulations, the trajectory of the weld source should be continuous, but transit moves without welding, called deadheading, are possible. The enormous heat of the weld source causes large temperature gradients, leading to a strain distribution in the welded material which can lead even to cracks. In summary, it can be concluded that the temperature gradient reduce the quality of the workpiece. We consider the problem of finding a trajectory of the weld source with minimal temperature deviation from a given target temperature for one layer of a workpiece with welding segments broader than the width of the weld pool. The temperature distribution is modeled using the finite element method. We formulate this problem as a mixed-integer linear programming model and demonstrate its solvability by a standard mixed-integer solver.
description: Beim Fertigungssprozess des Wire-Arc Additive Manufacturing (WAAM) wird ein Werkstück schichtweise durch eine sich bewegende Wärmequelle aufgebaut, die Tropfen aus geschmolzenem Schweißdraht auf eine Grundplatte aufbringt. Um Materialansammlungen zu reduzieren, sollte die Trajektorie der Schweißquelle zusammenhängend sein, aber Bewegungen ohne Schweißen, Deadheading genannt, sind ebenfalls möglich. Durch die enorme Hitze der Schweißquelle werden große Temperaturunterschiede verursacht, die zu einer Spannungsverteilung im Bauteil führen. Dadurch entsteht Verzug und sogar Risse können auftreten. Deshalb verringern große Temperaturunterschiede die Qualität des Werkstücks. Wir untersuchen das Problem, eine Trajektorie der Schweißquelle mit minimaler Temperaturabweichung von einer gegebenen Zieltemperatur für eine Lage eines Werkstücks mit Schweißsegmenten, die breiter als die Breite des Schweißbads sind, zu finden. Die Temperaturverteilung wird mit Hilfe der Finiten-Elemente-Methode modelliert. Wir formulieren dieses Problem als ein gemischt-ganzzahliges lineares Optimierungsmodell und demonstrieren seine Anwendbarkeit durch einen Standardlöser für gemischt-ganzzahlige Optimierungsprobleme.
description: Cottbus Mathematical Preprints; 18, 2021
Statistics, machine learning and deep learning for population genetic inference
Creators: name: Qin, Xinghu
Publisher: name: University of St Andrews
Year: 2021
Subjects: subject: Machine learning
subject: Deep learning
subject: Population genetics
subject: Population structure
subject: Detection of natural selection
subject: Information-based summary statistics
subject: Genome scan
subject: Genome wide association study
subject: QH455.Q5
subject: Population genetics
subject: Machine learning

description: Deciphering the evolutionary changes from raw DNA data effectively without the loss of intrinsic information has been the fundamental and core work in population genetics. However, some statistical challenges still restrict the inferential performance in population genetics, for example, the undue emphasis on rare or common alleles measured by different statistics, the ubiquitous multimodal genetic structure within populations, and complex genotype-by-environment associations. In this thesis, I propose to integrate the information-based statistics with machine learning approaches to address these problems and challenges for population genetic inference. First, I evaluated the performance of the information-based summary statistics for spatial demography inference. I showed that the summary statistics based on Shannon differentiation and the transformed diversity of order q=1 had higher power to discriminate spatially-structured scenarios than the traditional allelic richness and heterozygosity-based summary statistics. This provides guidelines for using summary statistics to make inference of spatial demography and for developing new statistical methods to detect signatures of evolutionary changes. Second, I proposed to use Kernel Local Fisher Discriminant Analysis of Principal Components (KLFDAPC) for population genetic structure inference considering the nonlinear and multimodal genetic information between individuals. KLFDAPC outperformed both PCA and DAPC in discriminatory power and in predicting individual geographic origin. KLFDAPC is useful for geographic ancestry inference and correction of population stratification in GWAS. Finally, I proposed a deep learning-based approach (DeepGenomeScan) to detect signals of selection. DeepGenomeScan had higher power than the commonly used machine learning approaches such as pcadapt and RDA in identifying signatures of selection. Furthermore, DeepGenomeScan can be extended to implement various genome-wide association studies (GWAS, TWAS, PWAS, and MWAS) by performing a systematic scanning on genome-wide variants to detect the genetic variations responsible for complex traits or involved in adaptation. In summary, this dissertation addresses several foundational questions in statistics-based and machine learning-based inference, contributing several the-state-of-the-art statistical tools for population genetic inference.
The Bispectrum of IRAS Galaxies
Creators: name: Scoccimarro, R.
name: Feldman, H. A.
name: Fry, J. N.
name: Frieman, J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compute the bispectrum for the galaxy distribution in the IRAS QDOT, 2Jy, and 1.2Jy redshift catalogs for wavenumbers 0.05 1 at large scales, χ^2 non-Gaussian initial conditions are ruled out at the 95% confidence level. The IRAS data do not distinguish between Lagrangian or Eulerian local bias.
description: 30 pages, 11 figures
On the use of the Fourier modal method for calculation of localized eigenmodes of integrated optical resonators
Creators: name: Bykov, Dmitry A.
name: Doskolovich, Leonid L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: 78A45, 78M22

description: We propose the generalization of the Fourier modal method aimed at calculating localized eigenmodes of integrated optical resonators. The method is based on constructing the analytic continuation of the structure's scattering matrix and calculating its poles. The method allows one to calculate the complex frequency of the localized mode and the corresponding field distribution. We use the proposed method to calculate the eigenmodes of rectangular dielectric block located on metal surface. We show that excitation of these modes by surface plasmon-polariton (SPP) results in resonant features in the SPP transmission spectrum. The proposed method can be used to design and investigate optical properties of integrated and plasmonic optical devices.
description: 13 pages, 4 figures
Renormalization of noncommutative U(N) gauge theories
Creators: name: Bonora, L.
name: Salizzoni, M.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We give an explicit proof that the noncommutative U(N) gauge theories are one-loop renormalizable
description: 12 pages, Latex. v3: calculations redone, conclusions reversed. v4, v5: minor changes
CERES: Advanced Rear End Structural test program – Low level tests
Creators: name: K. Muñoz
name: N. Muñoz
name: M. Jiménez
name: E. Arévalo
name: E. Guinaldo
Publisher: name: Zenodo
Year: 2021
Subjects: Rear end, Composite, Aeronautics, Structures, Testing

description: In the framework of Clean Sky 2 Large Passenger Aircraft Platform 1, Work Package 1.2 “Advanced engine integration driven fuselage” aims to develop concepts, enabling technologies and capabilities for the design and manufacture of the rear fuselage and empennage for next generation of commercial aircraft. Under the coordination of ELEMENT SEVILLE and led by AIRBUS as Topic Manager, CERES Project contributes to achieve this goal by means of the assessment of the mechanical behaviour of the materials and new designs implemented in the new Advanced Rear End. Being focused on the low-level tests of the Building Block Approach, this Project is organised in different test campaigns which cover mechanical characterization of coupons and structural validation of elements, details and sub-components. New composite materials (thermoset and thermoplastic resin based CFRPs), advanced manufacturing procedures (Liquid Resin Infusion, In-Situ Consolidation) and repair solutions are evaluated throughout this Project. Likewise, innovative testing and monitoring techniques such as Digital Image Correlation, High-Speed Camera or real time test witnessing application will be implemented in these tests in order to achieve a deeper understanding of specimens behaviour and optimize testing solutions. This work presents a summary of these test campaigns and the innovative testing and monitoring techniques that will be applied in the execution of the tests
Quantum current algebras associated with rational $R$-matrix
Creators: name: Kožić, Slaven
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study quantum current algebra $\textrm{A}(\overline{R})$ associated with the rational $R$-matrix of $\mathfrak{gl}_N$ and we give explicit formulae for the elements of its center at the critical level. Due to Etingof--Kazhdan's construction, the level $c$ vacuum module $\mathcal{V}_c(\overline{R})$ for the algebra $\textrm{A}(\overline{R})$ possesses a quantum vertex algebra structure for any complex number $c$. We prove that any module for the quantum vertex algebra $\mathcal{V}_c(\overline{R})$ is naturally equipped with a structure of restricted $\textrm{A}(\overline{R})$-module of level $c$ and vice versa.
description: 27 pages, minor changes and corrections, final version
title: Estimation of food consumption from growth rates at different environmental conditions
Creators: name: Bethke, Eckhard
name: Rätz, Hans-Joachim
Publisher: name: ASC 2007 - Theme session B
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Based on the von Bertalanffy approach an equation was developed for the estimation of food consumption using a limited set of initial variables and fish as a consumption sensor. Linking changes in the physical environment to variability in biological parameters the equation may be used within a multispecies approach for a more accurate prediction of ecological processes.
Linear quadratic optimal control system design by Chebyshev-based state parameterization
Creators: name: Nagurka, Mark L.
name: Ssu-Kei  Wang
name: V  Yen
name: Carnegie Mellon University.Engineering Design Research Center.
Publisher: name: Carnegie Mellon University
Year: 1991
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Abstract: "A Chebyshev-based representation of the state vector is proposed for designing optimal control trajectories of unconstrained, linear, dynamic systems with quadratic performance indices. By approximating each state variable by a finite-term, shifted Chebyshev series, the linear quadratic (LQ) optimal control problem can be cast as a quadratic programming (QP) problem. In solving this QP problem, one approach is to treat the state initial conditions as constraints that are included in the performance index using a Lagrange multiplier technique.A computationally more efficient approach is to tailor the state representation such that the boundary conditions (which include the known initial conditions) are decoupled from the coefficients of the Chebyshev series. In both approaches the necessary condition of optimality isderived as a system of linear algebraic equations from which near optimal trajectories can be designed."
title: The influence of water dynamics on the distribution of 0-group herring in the Barents Sea
Creators: name: Trofimov, Alexander G.
name: Prokhorova, Tatiana A.
name: Ozhigin, Vladimir K.
Publisher: name: ASC 2007 - Theme session B
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Water circulation plays an important role in all processes taking place in the water environment and influences both directly and indirectly the oceanographic, meteorological and biological conditions of seas and oceans. Physical processes, including water dynamics, determine not only the areas of young herring dwelling, but also the differences in its growth rate and time of maturity coming. This leads to the interannual variations of the commercial stock recruitment (Marti, 1956; Seliverstov and Penin, 1969). Therefore, the studying of the water dynamics influence on the transport of the Norwegian Spring-spawning herring in the early ontogenesis is of current importance. The aim of the paper is to study the influence of the Barents Sea circulation on 0-group herring distribution using a numerical model.
The Trouvé group for spaces of test functions
Creators: name: Nenning, David Nicolas
name: Rainer, Armin
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 58B10, 58B25, 58C07, 58D05, 32A36

description: The Trouvé group $\mathcal G_{\mathcal A}$ from image analysis consists of the flows at a fixed time of all time-dependent vectors fields of a given regularity $\mathcal A(\mathbb R^d,\mathbb R^d)$. For a multitude of regularity classes $\mathcal A$, we prove that the Trouvé group $\mathcal G_{\mathcal A}$ coincides with the connected component of the identity of the group of orientation preserving diffeomorphims of $\mathbb R^d$ which differ from the identity by a mapping of class $\mathcal A$. We thus conclude that $\mathcal G_{\mathcal A}$ has a natural regular Lie group structure. In many cases we show that the mapping which takes a time-dependent vector field to its flow is continuous. As a consequence we obtain that the scale of Bergman spaces on the polystrip with variable width is stable under solving ordinary differential equations.
description: 23 pages
Трепелы на юго-востоке Башкортостана как ценное минеральное сырье
Creators: name: В. Ф. Юлдашбаева
name: В. М. Горожанин
name: С. В. Мичурин
name: А. М. Карамова
Publisher: name: Вестник Академии наук Республики Башкортостан
Year: 2019
Subjects: девонские отложения
Республика Татарстан
доманикиты
биомаркеры
источник генерации
нефти рифей-ведских отложений.

description: В пределах республики Башкортостан проявления опок и опоковидных трепелов особенно широким распространением пользуются в Хайбуллинском районе. Общая мощность этих пород здесь достигает 17–18 м. В верховьях рр. Катырли и Ташлы довольно чистые трепелевидные опоки достигают 12–15 м мощности. Запасы опок и опоковидных трепелов в Хайбуллинском районе и на соседних с ним участках довольно значительны и могут обеспечить несколько крупных предприятий по выработке высокосортных стройматериалов. Проведено минералогическое и геохимическое изучение проявления трепелов в меловых отложениях на левом берегу р. Каин-Кабак. Были изучены макроскопически неоднородные породы. Трепелы кремнисто-карбонатного состава сложены кальцитом, аморфным кремнеземом тридимит-кристобалитового ряда и кварцем с незначительной примесью мусковита и хлорита. Образцы представляют собой агрегаты кремнистых остатков раковин фитопланктона – диатомовых водорослей. Благодаря своим природным характеристикам и крайне низкому содержанию вредных примесей, они могут быть использованы для получения пористого теплоизоляционного материала современными методами низкотемпературного вспенивания с высокими прочностными характеристиками. В связи с этим, выявлена проблема изучения неоднородности в соотношения CaO и SiO2 в разрезе отложений верхнего мела. От этой неоднородности будут меняться и любые технологические свойства сырья, которое может быть использовано как для обеспечения адсорбционных процессов, так и для изго-товления конструкционных материалов. В зависимости от цели использования той или иной разновидности этих карбонатнокремнистых пород, по-видимому, потребуется их предварительное обогащение.
Layer-by-layer thermal conductivities of the Group III nitride films in blue/green light emitting diodes
Creators: name: Zonghui  Su
name: Huang, Li
name: Liu, Fang
name: Freedman, Justin P.
name: Porter, Lisa
name: Davis, Robert
name: Malen, Jonathan
Publisher: name: Carnegie Mellon University
Year: 2012
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Thermal conductivities (k) of the individual layers of a GaN-based light emitting diode(LED) were measured along [0001] using the 3-omega method from 100-400 K. Base layers of AlN,GaN, and InGaN,grown by organometallic vapor phase epitaxy on SiC, have effective kmuch lower than bulk values. The 100 nm thick AlN layer has k = 0.93 ± 0.16 W/mK at 300 K, which is suppressed >100 times relative to bulk AlN. Transmission electron microscope images revealed high dislocation densities (4 × 1010 cm−2) within AlN and a severely defective AlN-SiC interface that cause additional phonon scattering. Resultant thermal resistances degrade LED performance and lifetime making layer-by-layer k, a critical design metric for LEDs.
Single-orbital realization of high-temperature $s^\pm$ superconductivity in the square-octagon lattice
Creators: name: Kang, Yao-Tai
name: Lu, Chen
name: Yang, Fan
name: Yao, Dao-Xin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We propose possible high-temperature superconductivity (SC) with singlet $s^\pm$-wave pairing symmetry in the single-orbital Hubbard model on the square-octagon lattice with only nearest-neighbor hopping terms. Three different approaches are engaged to treat with the interacting model for different coupling strengths, which yield consistent result for the $s^\pm$ pairing symmetry. We propose octagraphene, i.e., a monolayer of carbon atoms arranged into this lattice, as a possible material realization of this model. Our variational Monte Carlo study for the material with realistic coupling strength yields a pairing strength comparable with the cuprates, implying a similar superconducting critical temperature between the two families. This study also applies to other materials with similar lattice structure.
description: 7 pages, 5 figures
Comment on "Metallization of Fluid Nitrogen and the Mott Transition in Highly Compressed Low-Z Fluids"
Creators: name: Bastea, Marina
Publisher: name: arXiv
Year: 2003
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: A comment on ``Metallization of Fluid Nitrogen and the Mott Transition in Highly Compressed Low-Z Fluids'' by Chau et al, Phys. Rev. Lett. 90, 245501 (2003).
description: Submitted to PRL
Содержание и распределение металлов в системе почва-донные отложения озер Волго-Мешинского междуречья
Creators: name: А. Б. Александрова
name: Д. В. Иванов
name: В. С. Валиев
name: И. И. Зиганшин
name: В. В. Маланин
name: Д. Е. Шамаев
name: Р. Р. Хасанов
Publisher: name: Вестник Академии наук Республики Башкортостан
Year: 2019
Subjects: металлы
почва
озера
донные отложения
осадконакопление
Волго-Мешинское междуречье

description: В работе приводятся результаты изучения распределения металлов (Cd, Pb, Co, Cu, Ni, Zn, Cr, Mn, Fe) в почвах и донных отложениях озер Волго-Мешинского междуречья, входящих в систему особо охраняемых природных территорий Республики Татарстан. Почвы и донные отложения озер характеризуются сходным гранулометрическим составом, однако различаются содержанием мелкопылеватой и илистой фракций. В донных отложениях доля тонкодисперсных илистых частиц в 1,5 раза выше, чем в почвах водосборных территорий. Реакция среды водной вытяжки почв и донных отложений характеризовалась как слабокислая. Накопление органического вещества в исследуемых объектах варьирует в одном диапазоне концентраций, находясь на уровне 3-4%. Обнаружены существенные различия содержания валовых (кроме Со) и подвижных (кроме Cd) форм в донных отложениях по сравнению с почвами. Степень подвижности Pb, Co, Zn, Fe в донных отложениях в сравнении с почвами в 2–5 раз, а по Mn – на порядок выше, однако степень подвижности Cu, Ni, Cr в почвах и донных отложениях не отличается. Интенсивно из почв выносятся и аккумулируются в донных отложениях все изученные элементы, кроме Co и Mn. Содержание большинства исследуемых металлов в почвах и донных отложениях озер не превышает установленных региональных фоновых нормативов. Для донных отложений озер отмечены случаи превышения содержания валовой и подвижной форм Cd в 1,5-2 раза по сравнению с нормативными значениями