cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Συνδυασμός μεθοδολογιών αιτίου-αιτιατού με μεθοδολογίες διαγραμμάτων συσχετισμών για την ανάπτυξη fuzzy cognitive maps απεικόνισης κινδύνων σε βιομηχανικό εξοπλισμό προς συντήρηση
title: Combination of cause & effect methodologies with relationship diagrams methodologies for the development of fuzzy cognitive maps for risk mapping in industrial equipment maintenance
titleType: AlternativeTitle
Creators: name: Σαρρής, Ιωάννης
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: Ασαφής γνωστικός χάρτης
subject: Δενδρικό μοντέλο
subject: Προγνωστική συντήρηση
subject: Εργασίες συντήρησης
subject: Χρονοδιάγραμμα
subject: Μηχανική μάθηση
subject: Δεξαμενή πετρελαίου
subject: Χρονική καθυστέρηση
subject: Προδιαγραφή συντήρησης
subject: Τεχνητή νοημοσύνη

description: Η παρούσα διπλωματική εργασία εξετάζει τον συνδυασμό μεθοδολογιών αιτίου-αιτιατού με μεθοδολογίες διαγραμμάτων συσχετισμών για την ανάπτυξη Fuzzy Cognitive Maps (FCMs) που απεικονίζουν κινδύνους που μπορεί να προκύψουν ύστερα από συντήρηση σε βιομηχανικό εξοπλισμό και πιο συγκεκριμένα στον τομέα της συντήρησης δεξαμενών πετρελαιοειδών. Στο πρώτο κεφάλαιο αναλύονται οι διάφορες παράμετροι που επηρεάζουν τις εργασίες συντήρησης, με έμφαση στον αντίκτυπο των καθυστερήσεων και τις αιτίες που τις προκαλούν, όπως εξετάζονται μέσω της ανάλυσης Pareto. Επίσης αναλύονται τα προτερήματα της προγνωστικής συντήρησης, ο ρόλος των δενδρικών μοντέλων και η συμβολή της μηχανικής εκμάθησης. Στη συνέχεια, η εργασία επικεντρώνεται στη μηχανολογική δομή των δεξαμενών πετρελαίου, στις εργασίες συντήρησης και προγραμματισμού τους παρέχοντας μια ολοκληρωμένη ανάλυση της δομής αυτών. Επίσης αναλύονται οι κίνδυνοι που μπορεί να προκύψουν από τη λανθασμένη διαδικασία συντήρησης ή τη μη τήρηση των προδιαγραφών. Τέλος γίνεται περιληπτική ανάλυση των Fuzzy Cognitive Maps, όπου αναλύεται ως εργαλείο για την κατανόηση και τη διαχείριση των κινδύνων που συνδέονται με τη συντήρηση. Επίσης ως εργαλείο για την ανάλυση των FCM εξετάζεται η μέθοδος εκμάθησης Hebbian ως μέσο βελτίωσης της ακρίβειας αυτών των μοντέλων. Το τελικό συμπέρασμα της εργασίας είναι ότι η ενσωμάτωση της μηχανικής εκμάθησης οδηγεί στη δημιουργία αποδοτικότερων FCM με σκοπό τη βελτιστοποίηση διάφορων διεργασιών.
PBH mass growth through radial accretion during the radiation dominated era
Creators: name: Lora-Clavijo, F. D.
name: Guzman, F. S.
name: Cruz-Osorio, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We model the radial accretion of radiation on Primordial Black Holes (PBH) by numerically solving Einstein's equations coupled to an ultrarelativistic ideal gas with equation of state $p=ρ/3$. We calculate the final mass of a black hole by the integration of the accreted radiation energy density during the leptonic era between $t\sim10^{-4}s$ to $t\sim 10^2s$ after the Big Bang. Our results indicate that small PBHs with initial masses between $10^{-4}$ to $1M_{\odot}$ may grow up to hundreds of solar masses, and thus can be SMBH seeds. On the other hand, PBHs formed at $t\sim 1s$ with initial mass between 900 and $\sim 980M_{\odot}$, by the time $t\sim 100s$ show masses of $10^4$ to $10^6M_{\odot}$ which are masses of seeds or already formed SMBHs. The fact that we consider only radial flow implies that our results work well as limiting cases, and it is expected that under more general scenarios the accretion rates may change significantly. Nevertheless we show that it is possible that SMBHs can be PBHs that grew due to the accretion of radiation.
description: 15 pages, 6 eps figures. Accepted for publication in JCAP
48CK302-468, Tri-Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Tri-Notched
Porcellanite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a gray porcellanite tri-notched projectile point, broken on one side, missing one blade, the tip and part of one tang. Provenience: S1-1-(on top of bone)
Magnified image of CK302-940 with rodent gnawing on bison vertebrae
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Vertebrae
Rodent Gnawing
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Vertebrae dorsal aspect at 22.3 magnification.
Polymeric Surfactant P84/Polyoxometalate α-PW12O403- A Model System to Investigate the Interplay between Chaotropic and Hydrophobic Effects
Creators: name: Schmid, Philipp
name: Graß, X.
name: Bahadur, P.
name: Grillo, Isabelle
name: Diat, Oliver
name: Pfitzner, Arno
name: Bauduin, Pierre
Publisher: name: Universität Regensburg
Year: 2022
Subjects: subject: chaotropic effect; hydrophobic effect; polyoxometalates; polymeric surfactants; small angle scattering; salt effects
subject: 540 Chemie

description: Low charge density nanometric ions were recently shown to bind strongly to neutral hydrated matter in aqueous solution. This phenomenon, called the (super-)chaotropic effect, arises from the partial dehydration of both the nano-ion and the solute, leading to a significant gain in enthalpy. Here, we investigate the chaotropic effect of the polyoxometalate α-PW12O403− on the triblock copolymer P84: (EO)19(PO)43(EO)19 with (EO)19 the polyethoxylated and (PO)43 the polypropoxylated chains. The combination of phase diagrams, spectroscopic (nuclear magnetic resonance) and scattering (small angle neutron/X-ray scattering) techniques revealed that: (i) below the micellization temperature of P84, PW12O403− exclusively binds to the propylene oxide moiety of P84 unimers; and (ii) above the micellization temperature, PW12O403− mostly adsorbs on the ethylene oxide micellar corona. The preferential binding of the PW12O403− to the PPO chain over the PEO chains suggests that the binding is driven by the chaotropic effect and is reinforced by the hydrophobic effect. At higher temperatures, copolymer micellization leads to the displacement of PW12O403− from the PPO chain to the PEO chains. This study deepens our understanding of the subtle interplay between the chaotropic and hydrophobic effects in complex salt-organic matter solutions.
Magnified image of CK302-17216 with cut marks on bison metapodial
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Metapodial
Cut Marks
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Metapodial cranial aspect at 35.1 magnification.
Planar Shielded-Loop Resonators
Creators: name: Tierney, Brian B.
name: Grbic, Anthony
Publisher: name: arXiv
Year: 2014
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: The design and analysis of planar shielded-loop resonators for use in wireless non-radiative power transfer systems is presented. The difficulties associated with coaxial shielded-loop resonators for wireless power transfer are discussed and planar alternatives are proposed. The currents along these planar structures are analyzed and first-order design equations are presented in the form of a circuit model. In addition, the planar structures are simulated and fabricated. Planar shielded-loop resonators are compact and simple to fabricate. Moreover, they are well-suited for printed circuit board designs or integrated circuits
48CK302-595, Side Notched Point, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a purple quartzite side notched projectile point, complete with some remaining cortex. Provenience: O-?-88"
Atomically precise interfaces from non-stoichiometric deposition
Creators: name: Nie, Yuefeng
name: Zhu, Ye
name: Lee, Che-hui
name: Kourkoutis, Lena F.
name: Mundy, Julia A.
name: Junquera, Javier
name: Ghosez, Philippe
name: Xi, Xiaoxing
name: Shen, Kyle M.
name: Muller, David A.
name: Schlom, Darrell G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Complex oxide heterostructures display some of the most chemically abrupt, atomically precise interfaces, which is advantageous when constructing new interface phases with emergent properties by juxtaposing incompatible ground states. One might assume that atomically precise interfaces result from stoichiometric growth, but here we show that the most precise control is obtained for non-stoichiometric growth where differing surface energies can be compensated by surfactant-like effects. For the precise growth of Sr$_{n+1}$Ti$_n$O$_{3n+1}$ Ruddlesden-Popper (RP) phases, stoichiometric deposition leads to the loss of the first RP rock-salt double layer, but growing with a strontium-rich surface layer restores the bulk stoichiometry and ordering of the subsurface RP structure. Our results dramatically expand the materials that can be prepared in epitaxial heterostructures with precise interface control---from just the $n=\infty$ end members (perovskites) to the entire RP family---enabling the exploration of novel quantum phenomena at a richer variety of oxide interfaces.
description: 9 pages, 5 figures
Magnified image of CK302-16981 with root etching on bison tibia
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Tibia
Root Etching
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Tibia lateral aspect at 8.3 magnification.
Excitations and quasi-one-dimensionality in field-induced nematic and spin density wave states
Creators: name: Starykh, Oleg A.
name: Balents, Leon
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the excitation spectrum and dynamical response functions for several quasi-one-dimensional spin systems in magnetic fields without dipolar spin order transverse to the field. This includes both nematic phases, which harbor "hidden" breaking of spin-rotation symmetry about the field and have been argued to occur in high fields in certain frustrated chain systems with competing ferromagnetic and antiferromagnetic interactions, and spin density wave states, in which spin-rotation symmetry is truly unbroken. Using bosonization, field theory, and exact results on the integrable sine-Gordon model, we establish the collective mode structure of these states, and show how they can be distinguished experimentally.
description: 20 pages, 5 figures
Magnified image of CK302-14763 with carnivore gnawing on bison innominate
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Innominate
Carnivore Gnawing
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Innominate distal aspect at 13.0 magnification.
48CK302-538, Tool Fragment, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Stone Tool
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a gray quartzite flake tool fragment. Provenience: W4-1
Identity processes and eating disorder outcomes
Creators: name: O'Donnell, Aisling T.
name: Foran, Aoife-Marie
name: Muldoon, Orla
Publisher: name: Open Science Framework
Year: 2021
Subjects: subject: Social and Behavioral Sciences
subject: Social Psychology
subject: Psychology
subject: FOS: Psychology

description: A longitudinal investigation into whether identity processes, during a period of life transition, predict changes in eating disorder health outcomes, namely psychological well-being and eating disorder symptoms, over time.
48CK302-618, Projectile Point Fragment, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a purple quartzite projectile point fragment, small piece of one blade, likely distal portion. Provenience: unknown
48CK302-18728, Granite Cobble, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Stone Tool
Cobble
Granite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a granite cobble, possible chopper. Provenience: unknown
Galactic Cosmic Rays measured by UVS on Voyager 1 and the end of the modulation: Is the upwind heliopause a collapsed charge-exchange layer?
Creators: name: Lallement, R.
name: Bertaux, J. L.
name: Quemerais, E.
name: Sandel, B. R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The detectors of the UltraViolet Spectrographs (UVS) on Voyager 1/2 are recording a background that was earlier assigned to disintegrations in the RTG. We show that it arises instead from Galactic Cosmic Rays (GCRs). We show the 1992-2013 GCR flux measured by UVS on V1 and, by comparing with data from the GCR dedicated detectors, we estimate the energy range responsible for this UVS signal, around 300 MeV, and the response of UVS to the GCR anisotropy. After the abrupt jumps of May and August 2012 the count rate has been fluctuating only slightly around a constant value, but comparing with data from the LECP and the CRS instruments shows that those small variations are only responses to a varying anisotropy and not to a flux change. Taking advantage of the similarity in energy range to one of the products of the CRS instrument suite, we use the ratio between the two independent signals as a proxy for the temporal evolution of the GCR spectral slope around the 300 MeV range. We show that this slope has remained unchanged since Aug 2012 and find strong evidence that it will no longer vary, implying the end of the modulation at those energies and that V1 at this date is near or past the heliopause. The origin of this narrow and stagnating inner heliosheath is still unclear, and we discuss the potential effects of low solar wind speed episodes and subsequent self-amplified charge-exchange with interstellar neutrals, as a source of deceleration and collapse. We suggest that the quasi-static region encountered by V1 may be related to such effects, triggered by the strong post solar-maximum variability. This did not happen for V2 due to its trajectory at an angle further from the heliosphere axis and a later termination shock crossing. The existence on the upwind side of a mixing layer formed by charge transfer instead of a pure plasma contact discontinuity could explain various observations.
description: 12 ages, 8 figures, accepted for publication in Astronomy & Astrophysics
Wave equation for sums of squares on compact Lie groups
Creators: name: Garetto, Claudia
name: Ruzhansky, Michael
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 35G10, 35L30, 46F05, 46F05, 22E30

description: In this paper we investigate the well-posedness of the Cauchy problem for the wave equation for sums of squares of vector fields on compact Lie groups. We obtain the loss of regularity for solutions to the Cauchy problem in local Sobolev spaces depending on the order to which the Hörmander condition is satisfied, but no loss in globally defined spaces. We also establish Gevrey well-posedness for equations with irregular coefficients and/or multiple characteristics. As in the Sobolev spaces, if formulated in local coordinates, we observe well-posedness with the loss of local Gevrey order depending on the order to which the Hörmander condition is satisfied.
description: 21 pages
48CK302-494, Tri-Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Tri-Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a pink quartzite tri-notched projectile point, complete. Provenience: W2-2-22" BD
Magnified image of CK302-15561 with burn on bison rib blade fragment
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Rib Blade Fragment
Burns
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Rib blade fragment at 10.4 magnification.
Magnified image of CK302-16221 with root etching on bison mandible
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Mandible
Root Etching
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Mandible lingual aspect at 6.9 magnification.
48CK302-418, Side Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Chert
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a brown chert side notched projectile point. Provenience: N1-2-5'
HerMES: The Rest-Frame UV Emission and A Lensing Model for the z=6.34 Luminous Dusty Starburst Galaxy HFLS3
Creators: name: Cooray, Asantha
name: Calanog, Jae
name: Wardlow, Julie L.
name: Bock, J.
name: Bridge, C.
name: Burgarella, D.
name: Bussmann, R. S.
name: Casey, C. M.
name: Clements, D.
name: Conley, A.
name: Farrah, D.
name: Fu, H.
name: Gavazzi, R.
name: Ivison, R. J.
name: Laporte, N.
name: Lofaro, B.
name: Ma, Brian
name: Magdis, G.
name: Oliver, S. J.
name: Osage, W. A.
name: Pe'rez-Fournon, I.
name: Riechers, D.
name: Rigopoulou, D.
name: Scott, D.
name: Viero, M.
name: Watson, D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We discuss the restframe UV emission from the starbursting galaxy HFLS3 at z=6.34, discovered in Herschel/SPIRE data due to its red color in the submm wavelengths from 250-500 um. The apparent inst. SFR of HFLS3 inferred from the total FIR luminosity measured with over 15 photometric data points between 100 to 1000 um is 2900 Msun/yr. Keck/NIRC2 Ks band adaptive optics imaging data showed two potential NIR counterparts near HFLS3. Previously, the northern galaxy was taken to be in the foreground at z=2.1 while the southern galaxy was assumed to HFLS3's NIR counterpart. New HST/WFC3 and ACS imaging data show both optically bright galaxies are in the foreground at z<6. A new lensing model based on HST data and mm-wave continuum emission yields a magnification of 2.2+/-0.3. The lack of multiple imaging constrains the lensing magnification to be lower than either 2.7 or 3.5 at the 95% confidence level for the two scenarios, which attribute one or two components to HFLS3 in the source plane. Correcting for gravitational lensing, the inst. SFR is 1320 Msun/yr with the 95% confidence lower limit around 830 Msun/yr. Using models for the restframe UV to FIR SED, the ave. SFR over the last 100 Myr is around 660 Msun/yr. The dust and stellar masses of HFLS3 from the same SED models are 3x10^8 Msun and ~5x10^10 Msun, respectively, with large systematic uncertainties on assumptions related to the SED model. With HST/WFC3 images we also find diffuse NIR emission about 0.5" (~3 kpc) SW of HFLS3 that remains undetected in the ACS data. The emission has a photometric redshift consistent with either z~6 or a dusty galaxy template at z~2. If at the same redshift as HFLS3 the detected diffuse emission could be part of the complex merger system that could be triggering the starburst. Alternatively, it could be part of the foreground structure at z~2.1 that is responsible for lensing of HFLS3.
description: Submitted to ApJ, 10 pages, 6 figures
48CK302-562, Side Notched Point, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a tan quartzite side notched projectile point with a concave base, missing the very tip. Provenience: O-1-59"
Thermodynamic properties of the electron gas in multilayer graphene in the presence of a perpendicular magnetic field
Creators: name: Van Duppen, B.
name: Peeters, F. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The thermodynamic properties of the electron gas in multilayer graphene depend strongly on the number of layers and the type of stacking. Here we analyse how those properties change when we vary the number of layers for rhombohedral stacked multilayer graphene and compare our results with those from a conventional two dimensional electron gas. We show that the highly degenerate zero energy Landau level which is partly filled with electrons and partly with holes has a strong influence on the value of the different thermodynamic quantities.
Attachment Style and High Point and Transgression Narratives
Creators: name: Blackie, Laura
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Social and Behavioral Sciences

description: This preregistration involves secondary data analysis of an existing data set. No analyses on these questions have been undertaken prior to submitting the preregistration. In this project, we examine whether the meaning individuals make from transgressions and romantic high points (as assessed in written narratives on these events) across one-year of their relationship influences their satisfaction with their relationship.
Open bottom states and the anti-B meson propagation in hadronic matter
Creators: name: Torres-Rincon, Juan M.
name: Tolos, Laura
name: Romanets, Olena
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The interaction and propagation of anti-B mesons with light mesons, N and Delta baryons is studied within a unitarized approach based on effective models that are compatible with chiral and heavy-quark symmetries. We find several heavy-quark spin doublets in the open-bottom sectors, where anti-B and anti-B* mesons are present. In the meson sector we find several resonant states, among them, a B0 and a B1 with masses 5530 MeV and 5579 MeV as well as Bs0* and Bs1* narrow states at 5748 MeV and 5799 MeV, respectively. They form two doublets with no experimental identification yet, the first one being the bottom counterpart of the D0(2400) and D1(2430) states, and the second bottom doublet associated to the ubiquitous Ds0* (2317) and the Ds1 (2460). In the baryon sector, several Lambda_b and Sigma_b doublets are identified, among them the one given by the experimental Lambda_b(5910) and Lambda*_b(5921). Moreover, one of our states, the Sigma_b*(5904), turns out to be the bottom counterpart of the Sigma*(1670) and Sigma_c*(2549), which is a case for discovery. We finally analyze different transport coefficients for the anti-B meson in hot matter, such as formed in heavy-ion collisions at RHIC and LHC. For RHIC/LHC energies, the main contribution to the coefficients comes from the interaction of anti-B mesons with pions. However, we also include the effects of baryonic density which might be sizable at temperatures T < 100 MeV, as the chemical potential is expected to increase in the last stages of the expansion. We conclude that although the relaxation time decreases with larger baryonic densities, the anti-B meson does not thermalize at RHIC/LHC energies, representing an ideal probe for the initial bottom distribution.
description: 13 pages, 5 figures
Performance of the Caltech Submillimeter Observatory Dual-Color 180-720 GHz Balanced SIS Receivers
Creators: name: Kooi, J. W.
name: Chamberlin, R. A.
name: Monje, R.
name: Kovacs, A.
name: Rice, F.
name: Yoshida, H.
name: Force, B.
name: Cooper, K.
name: Miller, D.
name: Gould, M.
name: Lis, D.
name: Bumble, B.
name: LeDuc, R.
name: Stern, J. A.
name: Phillips, T. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We report on balanced SIS receivers covering the astronomical important 180-720 GHz submillimeter atmospheric window. To facilitate remote observations and automated spectral line surveys, fully synthesized local oscillators are employed. High-current-density Nb-AlN-Nb superconducting-insulating-superconducting (SIS) tunnel junctions are used as the mixing element. The measured double-sideband (DSB) 230 GHz receiver noise temperature, uncorrected for optics loss, ranges from 50K at 185 GHz, 33K at 246 GHz, to 51K at 280 GHz. In this frequency range the mixer has a DSB conversion gain of 0 +- 1.5 dB. The measured 460 GHz double-sideband receiver noise temperature, uncorrected for optics loss, is 32K at 400 GHz, 34K at 460 GHz, and 61K at 520 GHz. Similar to the 230 GHz balanced mixer, the DSB mixer conversion gain is 1 +- 1 dB. To help optimize performance, the mixer IF circuits and bias injection are entirely planar by design. Dual-frequency observation, by means of separating the incoming circular polarized electric field into two orthogonal components, is another important mode of operation offered by the new facility instrumentation. Instrumental stability is excellent supporting the LO noise cancellation properties of the balanced mixer configuration. In the spring of 2012 the dual-frequency 230/460 SIS receiver was successfully installed at Caltech Submillimeter Observatory (CSO), Mauna Kea, HI.
description: Accepted for publication in IEEE/TST
Análise de processos jurídicos: Caso 11 - Ação Trabalhista - Rito Ordinário 0010290-19.2018.5.15.0061 | Voto 5002265-76.2020.4.03.6107 (JF- AÇA-5002265-76.2020.4.03.6107-PIMP) | Ofício no 1893/2020 (PGR-00487975/2020) | Decisão 2020 (PGR-00487972/2020).
Creators: name: BRASIL. Ministério Da Justiça
Publisher: name: Zenodo
Year: 2023

description: Ação Trabalhista - Rito Ordinário 0010290-19.2018.5.15.0061 | Voto 5002265-76.2020.4.03.6107 (JF- AÇA-5002265-76.2020.4.03.6107-PIMP) | Ofício no 1893/2020 (PGR-00487975/2020) | Decisão 2020 (PGR-00487972/2020).
Magnified image of CK302-10050 with pathology on canid cervical vertebrae
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Cervical Vertebrae
Pathology
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Cervical vertebrae cranial aspect at 9.7 magnification.
Molecular Gas Clumps from the Destruction of Icy Bodies in the $β$ Pictoris Debris Disk
Creators: name: Dent, W. R. F.
name: Wyatt, M. C.
name: Roberge, A.
name: Augereau, J. -C.
name: Casassus, S.
name: Corder, S.
name: Greaves, J. S.
name: de Gregorio-Monsalvo, I.
name: Hales, A.
name: Jackson, A. P.
name: Hughes, A. Meredith
name: Lagrange, A. -M.
name: Matthews, B.
name: Wilner, D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Many stars are surrounded by disks of dusty debris formed in the collisions of asteroids, comets and dwarf planets. But is gas also released in such events? Observations at submm wavelengths of the archetypal debris disk around $β$ Pictoris show that 0.3% of a Moon mass of carbon monoxide orbits in its debris belt. The gas distribution is highly asymmetric, with 30% found in a single clump 85AU from the star, in a plane closely aligned with the orbit of the inner planet, $β$ Pic b. This gas clump delineates a region of enhanced collisions, either from a mean motion resonance with an unseen giant planet, or from the remnants of a collision of Mars-mass planets.
48CK302-18584, Side Notched Point, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Side Notched
Chert
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a brown chert side notched point with a concave base, missing the tip. Provenience: unknown
Short Course Penulisan Artikel Jurnal
Creators: name: Wekke, Ismail Suardi
Publisher: name: Zenodo
Year: 2020

description: Bahan presentasi dalam Short Course Penulisan Artikel Jurnal, HMI Cabang Gowa Raya dan DPP Rumah Produktif Indonesia (RPI), Minggu, 15 November 2020.
No X-rays from the very nearby Type Ia SN2014J: constraints on its environment
Creators: name: Margutti, R.
name: Parrent, J.
name: Kamble, A.
name: Soderberg, A. M.
name: Foley, R. J.
name: Milisavljevic, D.
name: Drout, M. R.
name: Kirshner, R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Deep X-ray observations of the post-explosion environment around the very nearby Type Ia SN\,2014J (Dl=3.5 Mpc) reveal no X-ray emission down to a luminosity L<7x10^{36} erg/s (0.3-10 keV) at t~20 days after the explosion. We interpret this limit in the context of Inverse Compton emission from upscattered optical photons by the supernova shock and constrain the pre-explosion mass-loss rate of the stellar progenitor system to be <10^{-9} M_sun yr-1 (for wind velocity v_w=100 km/s). Alternatively, the SN shock might be expanding into a uniform medium with density $n_CSM<3 cm-3. These results rule out single-degenerate (SD) systems with steady mass-loss until the terminal explosion and constrain the fraction of transferred material lost at the outer Lagrangian point to be <1%. The allowed progenitors are (i) WD-WD progenitors, (ii) SD systems with unstable hydrogen burning experiencing recurrent nova eruptions with recurrence time t<300 yrs and (iii) stars where the mass loss ceases before the explosion.
description: 9 pages, Submitted to ApJ
48CK302-541, Retouched Flake, Side 2
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Stone Tool
Retouched Flake
Chert
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a brown chert retouched flake, complete. Provenience: W4-?-1
Thermoelectric effects in FeCo|MgO|FeCo magnetic tunnel junctions
Creators: name: Wang, Shizhuo
name: Xia, Ke
name: Bauer, Gerrit E. W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We studied the thermoelectric coefficients (Seebeck and thermal conductance)of FeCo|MgO|FeCo(001) magnetic tunnel junctions (MTJs) from first principles using a generalized Landauer-Büttiker formalism. FeCo|MgO|FeCo(001) MTJs usually yield smaller thermoelectric effects compared with epitaxial Fe|MgO|Fe(001) MTJs. The (magneto-) Seebeck effect is sensitive to the details of the FeCo$|$MgO interfaces. Interfacial oxygen vacancies (OVs) can enhance the thermoelectric effects in MTJs greatly. We also compute angular dependent Seebeck coefficients that provide more information about the transport physics. We report large deviations from the Wiedemann-Franz law at room temperature.
description: 8 pages, 10 figures
48CK302-521b, Tri-Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Tri-Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a gray quartzite tri-notched projectile point, complete. Provenience: W3-?-21" - Top Level
Magnified image of CK302-16314 with polishing on a bison anterior metapodial
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Anterior Metapodial
Polishing
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Anterior Metapodial lateral aspect at 14.6 magnification.
48CK302-549, Flake Knife Fragment, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Stone Tool
Flake Knife
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a tan quartzite flake knife fragment. Provenience: W4-?-1
Electrostatics-based finite-size correction for first-principles point defect calculations
Creators: name: Kumagai, Yu
name: Oba, Fumiyasu
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Finite-size corrections for charged defect supercell calculations typically consist of image-charge and potential alignment corrections. A wide variety of schemes for both corrections have been proposed for decades. Regarding the image-charge correction, Freysoldt, Neugebauer, and Van de Walle (FNV) recently proposed a novel method that enables us to accurately estimate the correction energy a posteriori through alignment of the defect-induced potential to the model charge potential [Freysoldt et al., Phys. Rev. Lett. 102, 016402 (2009)]. This method, however, still has two issues in practice. Firstly, it uses planar-averaged potential for determining the potential offset, which cannot be readily applied to relaxed system. Secondly, the long-range Coulomb interaction is assumed to be screened by a macroscopic dielectric constant. This is valid only for cubic systems and can bring forth huge errors for defects in anisotropic materials. In this study, we use the atomic site electrostatic potential as a potential marker instead of the planar-averaged potential, and extend the FNV scheme by adopting the point charge model in an anisotropic medium for estimating long-range interactions. We also revisit the conventional potential alignment correction and show that it is fully included in the image-charge correction and therefore unnecessary. In addition, we show that the potential alignment corresponds to a part of first-order and full of third-order image-charge correction; thus the third-order image-charge contribution is absent after the potential alignment. Finally, a systematic assessment of the accuracy of the extended FNV correction scheme is performed for a wide range of material classes. The defect formation energies calculated using around 100-atom supercells are successfully corrected even after atomic relaxation within a few tenths of eV compared to those in the dilute limit.
Magnified image of CK302-16758 with pathology on bison metapodial
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Metapodial
Pathology
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Metapodial distal aspect at 13.1 magnification.
Does the circularization radius exist or not for low angular momentum accretion?
Creators: name: Bu, De-Fu
name: Yuan, Feng
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: If the specific angular momentum of accretion gas at large radius is small compared to the local Keplerian value, one usually believes that there exists a "circularization radius" beyond which the angular momentum of accretion flow is almost a constant while within which a disk is formed and the angular momentum roughly follows the Keplerian distribution. In this paper, we perform numerical simulations to study whether the picture above is correct in the context of hot accretion flow. We find that for a steady accretion flow, the "circularization radius" does not exist and the angular momentum profile will be smooth throughout the flow. However, for transient accretion systems, such as the tidal disruption of a star by a black hole, a "turning point" should exist in the radial profile of the angular momentum, which is conceptually similar to the "circularization radius". At this radius, the viscous timescale equals the life time of the accretion event. The specific angular momentum is close to Keplerian within this radius, while beyond this radius the angular momentum is roughly constant.
description: 5 pages, 2 figures, accepted by MNRAS
48CK302-391, Knife Tip Fragment, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Knife
Stone Tool
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a tan quartzite knife, tip fragment only. Provenience: E1-?-5
Structure and Properties of α-NaFeO2-type Ternary Sodium Iridates
Creators: name: Baroudi, Kristen
name: Yim, Cindi
name: Wu, Hui
name: Huang, Qingzhen
name: Roudebush, John H.
name: Vavilova, Eugenia
name: Grafe, Hans-Joachim
name: Kataev, Vladislav
name: Buechner, Bernd
name: Ji, Huiwen
name: Kuo, Changyang
name: Hu, Zhiwei
name: Pi, Tun-Wen
name: Pao, Chiwen
name: Lee, Jyhfu
name: Mikhailova, Daria
name: Tjeng, Liu Hao
name: Cava, R. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The synthesis, structure, and elementary magnetic and electronic properties are reported for layered compounds of the type Na3-xMIr2O6 and Na3-xM2IrO6, where M is a transition metal from the 3d series (M=Zn, Cu, Ni, Co, Fe and Mn). The rhombohedral structures, in space group R-3m, were determined by refinement of neutron and synchrotron powder diffraction data. No clear evidence for long range 2:1 or 1:2 honeycomb-like M/Ir ordering was found in the neutron powder diffraction patterns except in the case of M = Zn, thus in general the compounds are best designated as sodium deficient α-NaFeO2-type phases with formulas Na1-xM1/3Ir2/3O2 or Na1-xM2/3Ir1/3O2. Synchrotron powder diffraction patterns indicate that several of the compounds likely have honeycomb in-plane metal-iridium ordering with disordered stacking of the layers. All the compounds are sodium deficient under our synthetic conditions and are black and insulating. Weiss constants derived from magnetic susceptibility measurements indicate that Na0.62Mn0.61Ir0.39O2, Na0.80Fe2/3Ir1/3O2, Na0.92Ni1/3Ir2/3O2, Na0.86Cu1/3Ir2/3O2, and Na0.89Zn1/3Ir2/3O2 display dominant antiferromagnetic interactions. For Na0.90Co1/3Ir2/3O2 the dominant magnetic interactions at low temperature are ferromagnetic while at high temperatures they are antiferromagnetic; there is also a change in the effective moment. Low temperature specific heat measurements (to 2 K) on Na0.92Ni1/3Ir2/3O2 indicate the presence of a broad magnetic ordering transition. X-ray absorption spectroscopy shows that iridium is at or close to the 4+ oxidation state in all compounds. 23Na nuclear magnetic resonance measurements comparing Na2IrO3 to Na0.92Ni1/3Ir2/3O2 and Na0.89Zn1/3Ir2/3O2 provide strong indications that the electron spins are short-range ordered in the latter two materials. All of the compounds are spin glasses.
description: Journal of Solid State Chemistry to be published, 43 pages, 16 figures
Some directed subsets of C*-algebras and semicontinuity theory
Creators: name: Brown, Lawrence G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L05

description: The main result concerns a sigma-unital C*-algebra A, a strongly lower semicontinuous element h of A**, the enveloping von Neumann algebra, and the set of self-adjoint elements a of A such that a \le h - delta 1 for some delta > 0, where 1 is the identity of A**. The theorem is that this set is directed upward. It follows that if this set is non-empty, then h is the limit of an increasing net of self-adjoint elements of A. A complement to the main result, which may be new even if h = 1, is that if a and b are self-adjoint in A, a \le h, and b \le h - delta 1 for delta > 0, then there is a self-adjoint c in A such that c \le h, a \le c, and b \le c.
description: I intend to submit this for publication if I continue to believe that Proposition 1 is new
Magnified image of CK302-10028 with pathology on canid phalanx
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Phalanx
Pathology
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Phalanx proximal aspect at 14.3 magnification.
Aspects of Epenthesis across Bengali Dialects
Creators: name: Shubha, Naywaz Sharif
Publisher: name: Zenodo
Year: 2021
Subjects: subject: Bangla, Epenthesis, Vowels, Language, Linguistics, Optimality Theoretic approach
subject: https://www.britannica.com/science/linguistics
subject: https://www.merriam-webster.com/dictionary/epenthesis
subject: https://www.britannica.com/topic/Bengali-language

description: This research was accepted at the 6th Asian Junior Linguists Conference (AJL) hosted by Sogang University, Seoul, South Korea. In the current approach, after reviewing the past literature on Bangla epenthesis, I argued that epenthesis in the dialects conforms to the same underlying grammar that governs the Standard Bengali language. My attempts were to show that earlier schemes of epenthesis proposed for the loan or foreign words in Bengali can be utilised the same way in the epenthesis for the dialect words.
description: This is the presentation of the research paper at the conference at Sogang University, Seoul, South Korea
48CK302-496 Tri-Notched Point, Side 1
Creators: name: (:Unkn) Unknown
Publisher: name: University of Wyoming
Year: 2023
Subjects: Projectile Point
Tri-Notched
Quartzite
Vore Buffalo Jump
Bison
Bison Jump
Mass Kill Site
Archaeological Site
Northwest Plains Tribes
Sinkhole
Wyoming
Prehistoric
Archaeology

description: Image of a brown quartzite tri-notched projectile point, complete. Provenience: W2-7-56" BSD
Long-lived selective spin echoes in dipolar solids under periodic and aperiodic pi-pulse trains
Creators: name: Ridge, Clark D.
name: O'Donnell, Lauren F.
name: Walls, Jamie D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The application of Carr-Purcell-Meiboom-Gill (CPMG) $π-$trains for dynamically decoupling a system from its environment has been extensively studied in a variety of physical systems. When applied to dipolar solids, recent experiments have demonstrated that CPMG pulse trains can generate long-lived spin echoes. While there still remains some controversy as to the origins of these long-lived spin echoes under the CPMG sequence, there is a general agreement that pulse errors during the $π-$pulses are a necessary requirement. In this work, we develop a theory to describe the spin dynamics in dipolar coupled spin-1/2 system under a CPMG($ϕ_{1},ϕ_{2}$) pulse train, where $ϕ_{1}$ and $ϕ_{2}$ are the phases of the $π-$pulses. From our theoretical framework, the propagator for the CPMG($ϕ_{1},ϕ_{2}$) pulse train is equivalent to an effective ``pulsed'' spin-locking of single-quantum coherences with phase $\pm\frac{ϕ_{2}-3ϕ_{1}}{2}$, which generates a periodic quasiequilibrium that corresponds to the long-lived echoes. Numerical simulations, along with experiments on both magnetically dilute, random spin networks found in C$_{60}$ and C$_{70}$ and in non-dilute spin systems found in adamantane and ferrocene, were performed and confirm the predictions from the proposed theory.
description: 25 pages, 12 figures, submitted to Physical Review B
Hydrogen Bonding in Crystals of Pyrrol-2-yl Chloromethyl Ketone Derivatives and Methyl Pyrrole-2-Carboxylate
Creators: name: Domagała, M.
name: Dubis, Alina T.
name: Wojtulewski, S.
name: Zabel, Manfred
name: Pfitzner, Arno
Publisher: name: Universität Regensburg
Year: 2022
Subjects: subject: crystal structure; hydrogen bond; Hirshfeld surface; pyrrol -2-yl ketone; DFT
subject: 540 Chemie

description: The crystal and molecular structure of three derivatives of carbonyl 2-substituted pyrroles was determined by the single crystal X-ray diffraction. There are 2,2-dichloro-1-(1-methyl-1H-pyrrol-2-yl)ethan-1-one (I), 2-chloro-1-(1H-pyrrol-2-yl)ethan-1-one (II) and methyl 1H-pyrrole-2-carboxylate (III). All compounds crystallize with one molecule in the asymmetric unit in P212121 for I and II, and P21/c group for III. Despite the similar structures of the investigated compounds, the hydrogen bonds formed in their crystal structures adopt different H-bond motifs. In structure I, the dimers R12(5) and R21(7) form a chain along the b-axis, while in structures II and III, chain C(5) structural motifs are formed. The single point calculations at a ωB97XD/6-311++G(d,p) level of theory indicate that systems with N-H⋯O bonds have greater interaction energies (are more stable) compared with systems featuring C-H⋯O/Cl bonds. A descriptive Hirshfeld analysis showed that the greatest differences are visible for the H⋯H interactions. These H⋯H interactions predominate in structure III, accounting for 45% of the intermolecular interactions, while in structures I and II, they account for only 25%. Although compounds I-II contain Cl-atoms, the percentage of Cl⋯Cl interactions is rather low. In structure with two Cl-atoms (I), the contribution of the Cl⋯Cl contacts is 8.7% and for II, the contribution accounts for only 0.4% of the interactions.
On the Deformation of Lie-Yamaguti algebras
Creators: name: Lin, Jie
name: Chen, Liangyun
name: Ma, Yao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 17A40, 17B56, 17B60

description: The deformation theory of Lie-Yamaguti algebras is developed by choosing a suitable cohomology. The relationship between the deformation and the obstruction of Lie-Yamaguti algebras is obtained.
description: 11pages
Capitulation des 2-classes d'idéaux de $\mathbf{k}=\mathbb{Q}(\sqrt{2p}, i)$
Creators: name: Azizi, Abdelmalek
name: Taous, Mohammed
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11R27, 11R29, 11R37

description: Let $p$ be a prime number such that $p\equiv 1$ mod $8$ and $i=\sqrt{-1}$. Let $\mathbf{k}=\mathbb{Q}(\sqrt{2p}, i)$, $\mathbf{k}_1^{(2)}$ be the Hilbert $2$-class field of $\mathbf{k}$, $\mathbf{k}_2^{(2)}$ be the Hilbert $2$-class field of $\mathbf{k}_1^{(2)}$ and $G=\mathrm{Gal}(\mathbf{k}_2^{(2)}/\mathbf{k})$ be the Galois group of $\mathbf{k}_2^{(2)}/\mathbf{k}$. Suppose that the $2$-part, $C_{\mathbf{k}, 2}$, of the class group of $\mathbf{k}$ is of type $(2, 4)$; then $\mathbf{k}_1^{(2)}$ contains six extensions $\mathbf{K_{i, j}}/\mathbf{k}$, $i=1, 2, 3$ and $j=2, 4$. Our goal is to study the problem of the capitulation of $2$-ideal classes of $\mathbf{K_{i, j}}$ and to determine the structure of $G$.