cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nonperturbative Heavy-Quark Diffusion in the Quark-Gluon Plasma
Creators: name: van Hees, H.
name: Mannarelli, M.
name: Greco, V.
name: Rapp, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We evaluate heavy-quark (HQ) transport properties in a Quark-Gluon Plasma (QGP) employing interaction potentials extracted from thermal lattice QCD. Within a Brueckner many-body scheme we calculate in-medium T-matrices for charm- and bottom-quark scattering off light quarks in the QGP. The interactions are dominated by attractive meson and diquark channels which support bound and resonance states up to temperatures of ~1.5 T_c. We apply pertinent drag and diffusion coefficients (supplemented by perturbative scattering off gluons) in Langevin simulations in an expanding fireball to compute HQ spectra and elliptic flow in \sqrt{s_{NN}}=200 GeV Au-Au collisions. We find good agreement with semileptonic electron-decay spectra which supports our nonperturbative computation of the HQ diffusion coefficient, suggestive for a strongly coupled QGP.
description: 4 pages, 4 figures, v2: version to appear in Phys. Rev. Lett
Anderson transition in a three dimensional kicked rotor
Creators: name: Wang, Jiao
name: Garcia-Garcia, Antonio M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate Anderson localization in a three dimensional (3d) kicked rotor. By a finite size scaling analysis we have identified a mobility edge for a certain value of the kicking strength $k = k_c$. For $k > k_c$ dynamical localization does not occur, all eigenstates are delocalized and the spectral correlations are well described by Wigner-Dyson statistics. This can be understood by mapping the kicked rotor problem onto a 3d Anderson model (AM) where a band of metallic states exists for sufficiently weak disorder. Around the critical region $k \approx k_c$ we have carried out a detailed study of the level statistics and quantum diffusion. In agreement with the predictions of the one parameter scaling theory (OPT) and with previous numerical simulations of a 3d AM at the transition, the number variance is linear, level repulsion is still observed and quantum diffusion is anomalous with $ \propto t^{2/3}$. We note that in the 3d kicked rotor the dynamics is not random but deterministic. In order to estimate the differences between these two situations we have studied a 3d kicked rotor in which the kinetic term of the associated evolution matrix is random. A detailed numerical comparison shows that the differences between the two cases are relatively small. However in the deterministic case only a small set of irrational periods was used. A qualitative analysis of a much larger set suggests that the deviations between the random and the deterministic kicked rotor can be important for certain choices of periods. Contrary to intuition correlations in the deterministic case can either suppress or enhance Anderson localization effects.
description: 10 pages, 5 figures
A spin based heat engine: demonstration of multiple rounds of algorithmic cooling
Creators: name: Ryan, C. A.
name: Moussa, O.
name: Baugh, J.
name: Laflamme, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show experimental results demonstrating multiple rounds of heat-bath algorithmic cooling in a 3 qubit solid-state nuclear magnetic resonance quantum information processor. By dynamically pumping entropy out of the system of interest and into the heat-bath, we are able show purification of a single qubit to a polarization 1.69 times that of the heat-bath and thus go beyond the Shannon bound for closed system cooling. The cooling algorithm implemented requires both high fidelity coherent control and a deliberate controlled interaction with the environment. We discuss the improvements in control that allowed this demonstration. This experimental work shows that given this level of quantum control in systems with sufficiently large polarizations, nearly pure qubits should be achievable.
description: 6 pages, 4 figures, improved content due to referee critique
Lattice effects and current reversal in superconducting ratchets
Creators: name: Dinis, L.
name: Gonzalez, E. M.
name: Anguita, J. V.
name: Parrondo, J. M. R.
name: Vicent, J. L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Competition between the vortex lattice and a lattice of asymmetric artificial defects is shown to play a crucial role in ratchet experiments in superconducting films. We present a novel and collective mechanism for current reversal based on a reconfiguration of the vortex lattice. In contrast to previous models of vortex current reversal, the mechanism is based on the global response of the vortex lattice to external forces.
description: 12 pages, 7 figures
The evolution of the UV luminosity and stellar mass functions of Lyman-alpha emitters from z~2 to z~6
Creators: name: Santos, Sérgio
name: Sobral, David
name: Butterworth, Josh
name: Paulino-Afonso, Ana
name: Ribeiro, Bruno
name: da Cunha, Elisabete
name: Calhau, João
name: Khostovan, Ali Ahmad
name: Matthee, Jorryt
name: Haro, Pablo Arrabal
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We measure the evolution of the rest-frame UV luminosity function (LF) and the stellar mass function (SMF) of Lyman-alpha (Lya) emitters (LAEs) from z~2 to z~6 by exploring ~4000 LAEs from the SC4K sample. We find a correlation between Lya luminosity (LLya) and rest-frame UV (M_UV), with best-fit M_UV=-1.6+-0.2 log10(LLya/erg/s)+47+-12 and a shallower relation between LLya and stellar mass (Mstar), with best-fit log10( Mstar/Msun)=0.9+-0.1 log10(LLya/erg/s)-28+-4.0. An increasing LLya cut predominantly lowers the number density of faint M_UV and low Mstar LAEs. We estimate a proxy for the full UV LFs and SMFs of LAEs with simple assumptions of the faint end slope. For the UV LF, we find a brightening of the characteristic UV luminosity (M_UV*) with increasing redshift and a decrease of the characteristic number density (Phi*). For the SMF, we measure a characteristic stellar mass (Mstar*/Msun) increase with increasing redshift, and a Phi* decline. However, if we apply a uniform luminosity cut of log10 (LLya/erg/s) >= 43.0, we find much milder to no evolution in the UV and SMF of LAEs. The UV luminosity density (rho_UV) of the full sample of LAEs shows moderate evolution and the stellar mass density (rho_M) decreases, with both being always lower than the total rho_UV and rho_M of more typical galaxies but slowly approaching them with increasing redshift. Overall, our results indicate that both rho_UV and rho_M of LAEs slowly approach the measurements of continuum-selected galaxies at z>6, which suggests a key role of LAEs in the epoch of reionisation.
description: Accepted for publication in MNRAS. 20 pages, 13 figures, 4 tables
Theoretical model of viscous friction inside steadily sheared foams and concentrated emulsions
Creators: name: Tcholakova, S.
name: Denkov, N. D.
name: Golemanov, K.
name: Ananthapadmanabhan, K. P.
name: Lips, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In a recent letter (Denkov et al., Phys. Rev. Lett., vol. 100 (2008) p. 138301) we calculated theoretically the macroscopic viscous stress of steadily sheared foam/emulsion from the energy dissipated inside the transient planar films, formed between neighboring bubbles/drops in the shear flow. The model predicts that the viscous stress in these systems should be a proportional to Ca^1/2, where Ca is the capillary number and n = 1/2 is the power-law index. In the current paper we explain in detail our model and develop it further in several aspects: First, we extend the model to account for the effects of viscous friction in the curved meniscus regions, surrounding the planar films, on the dynamics of film formation and on the total viscous stress. Second, we consider the effects of surface forces (electrostatic, van der Waals, etc.) acting between the surfaces of the neighboring bubbles/drops and show that these forces could be important in emulsions, due to the relatively small thickness of emulsion films (often comparable to the range of action of the surface forces). Third, additional consideration is made for bubbles/drops exhibiting high surface viscosity, for which we demonstrate an additional contribution to the macroscopic viscous stress, created by the surface dissipation of energy. The new upgraded model predicts that the energy dissipation at the bubble/drop surface leads to power-law index n < 1/2, whereas the contribution of the surface forces leads to n > 1/2, which explains the rich variety of foam/emulsion behaviors observed upon steady shear. Various comparisons are made between model predictions and experimental results for both foams and emulsions, and a very good agreement is found.
description: 46 pages, 12 figures, submitted to Physical Review E
Characterizing Residential Load Patterns by Household Demographic and Socioeconomic Factors
Creators: name: Wei, Zhuo
name: Wang, Hao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The wide adoption of smart meters makes residential load data available and thus improves the understanding of the energy consumption behavior. Many existing studies have focused on smart-meter data analysis, but the drivers of energy consumption behaviors are not well understood. This paper aims to characterize and estimate users' load patterns based on their demographic and socioeconomic information. We adopt the symbolic aggregate approximation (SAX) method to process the load data and use the K-Means method to extract key load patterns. We develop a deep neural network (DNN) to analyze the relationship between users' load patterns and their demographic and socioeconomic features. Using real-world load data, we validate our framework and demonstrate the connections between load patterns and household demographic and socioeconomic features. We also take two regression models as benchmarks for comparisons.
description: ACM International Conference on Future Energy Systems (ACM e-Energy) 2021
The hidden HI-massive LIRG HIZOA J0836-43: Inside-out galaxy formation
Creators: name: Cluver, M. E.
name: Jarrett, T. H.
name: Appleton, P. N.
name: Kraan-Korteweg, R. C.
name: Woudt, P. A.
name: Koribalski, B. S.
name: Donley, J. L.
name: Wakamatsu, K.
name: Nagayama, T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: HIZOA J0836-43 is an extreme gas-rich ($M_{\rm{HI}}$=7.5$\times10^{10} M_{\sun}$) disk galaxy which lies hidden behind the strongly obscuring Vela region of the Milky Way. Utilizing observations from the {\it Spitzer Space Telescope}, we have found it to be a luminous infrared starburst galaxy with a star formation rate of $\sim 21 M_{\sun} \rm{yr^{-1}}$, arising from exceptionally strong molecular PAH emission ($L_{7.7\micron} = 1.50 \times 10^{9} L_{\odot}$) and far-infrared emission from cold dust. The galaxy exhibits a weak mid-infrared continuum compared to other starforming galaxies and U/LIRGs. This relative lack of emission from small grains suggests atypical interstellar medium conditions compared to other starbursts. We do not detect significant $[$Ne {\sc v}$]$ or $[$O {\sc iv}$]$, which implies an absent or very weak AGN. The galaxy possesses a prominent bulge of evolved stars and a stellar mass of 4.4($\pm$1.4)$\times10^{10} M_{\sun}$. With its plentiful gas supply and current star formation rate, a doubling of stellar mass would occur on a timescale of $\sim$2 Gyr. Compared to local galaxies, HIZOA J0836-43 appears to be a "scaled-up" spiral undergoing inside-out formation, possibly resembling stellar disk building processes at intermediate redshifts.
description: 5 pages, 3 figures, 1 table; Accepted for publication in ApJL: August 25 2008. A version with full resolution figures is available at http://spider.ipac.caltech.edu/staff/jarrett/Cluver_ApJL.pdf
Fast particle acceleration in three-dimensional relativistic reconnection
Creators: name: Zhang, Hao
name: Sironi, Lorenzo
name: Giannios, Dimitrios
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Magnetic reconnection is invoked as one of the primary mechanisms to produce energetic particles. We employ large-scale three-dimensional (3D) particle-in-cell simulations of reconnection in magnetically-dominated ($σ=10$) pair plasmas to study the energization physics of high-energy particles. We identify a novel acceleration mechanism that only operates in 3D. For weak guide fields, 3D plasmoids / flux ropes extend along the $z$ direction of the electric current for a length comparable to their cross-sectional radius. Unlike in 2D simulations, where particles are buried in plasmoids, in 3D we find that a fraction of particles with $γ\gtrsim 3σ$ can escape from plasmoids by moving along $z$, and so they can experience the large-scale fields in the upstream region. These "free" particles preferentially move in $z$ along Speiser-like orbits sampling both sides of the layer, and are accelerated linearly in time -- their Lorentz factor scales as $γ\propto t$, in contrast to $γ\propto \sqrt{t}$ in 2D. The energy gain rate approaches $\sim eE_{\rm rec}c$, where $E_{\rm rec}\simeq 0.1 B_0$ is the reconnection electric field and $B_0$ the upstream magnetic field. The spectrum of free particles is hard, $dN_{\rm free}/dγ\propto γ^{-1.5}$, contains $\sim 20\%$ of the dissipated magnetic energy independently of domain size, and extends up to a cutoff energy scaling linearly with box size. Our results demonstrate that relativistic reconnection in GRB and AGN jets may be a promising mechanism for generating ultra-high-energy cosmic rays.
description: 14 pages, 10 figures, 1 table, submitted to ApJ
Magnetic processes in a collapsing dense core. I Accretion and Ejection
Creators: name: Hennebelle, P.
name: Fromang, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Abridged. It is important for the star formation process to understand the collapse of a prestellar dense core. We investigate the effect of the magnetic field during the first collapse up to the formation of the firstcore, focusing particularly on the magnetic braking and the launching of outflows. We perform 3D AMR high resolution numerical simulations of a magnetically supercritical collapsing dense core using the RAMSES MHD code and develop semi-analytical models that we compare with the numerical results. We study in detail the various profiles within the envelope of the collapsing core for various magnetic field strengths. Even modest values of magnetic field strength modify the collapse significantly. This is largely due to the amplification of the radial and toroidal components of the magnetic field by the differential motions within the collapsing core. For a weak magnetic intensity corresponding to an initial mass-to-flux over critical mass-to-flux ratio, $μ$ equals to 20, a centrifugally supported disk forms. The strong differential rotation triggers the growth of a slowly expanding magnetic tower. For a higher magnetic field strengths corresponding to $μ=2$, the collapse occurs primarily along the field lines, therefore delivering weaker angular momentum in the inner part whereas at the same time, strong magnetic braking occurs. As a consequence no centrifugally supported disk forms. An outflow is launched from the central thermally supported core. Detailed comparisons with existing analytical predictions indicate that it is magneto-centrifugally driven. For cores having a mass-to-flux over critical mass-to-flux radio $μ< 5$, the magnetic field appears to have a significant impact.....
description: Accepted for publication in A&A
Electric field-induced spin textures in a superlattice with Rashba and Dresselhaus spin-orbit coupling
Creators: name: Khomitsky, D. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The DC charge current, field-induced spin polarization and spin textures are studied in the 1D gated superlattice with both fixed and varying Rashba and Dresselhaus contributions to spin-orbit coupling. It is found that a spin component with zero mean value can demonstrate non-vanishing field-induced spin texture in a superlattice cell which can be probed experimentally, with the highest amplitudes achievable in an interval of comparable Rashba and Dresselhaus terms. The consideration of the finite parameters for collision rate and temperature is found to be non-destructive for the calculated current and spin characteristics depending on all states below the Fermi level.
description: 8 pages, 6 figures
Crystalline phase of strongly interacting Fermi mixtures
Creators: name: Petrov, D. S.
name: Astrakharchik, G. E.
name: Papoular, D. J.
name: Salomon, C.
name: Shlyapnikov, G. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show that the system of weakly bound molecules of heavy and light fermionic atoms is characterized by a long-range intermolecular repulsion and can undergo a gas-crystal quantum transition if the mass ratio exceeds a critical value. For the critical mass ratio above 100 obtained in our calculations, this crystalline order can be observed as a superlattice in an optical lattice for heavy atoms with a small filling factor. We also find that this novel system is sufficiently stable with respect to molecular relaxation into deep bound states and to the process of trimer formation.
description: 4 pages, 1 color figure, published version
Recensioni
Creators: name: Vari, Autori
Publisher: name: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica
Year: 2011

description: Territorio della Ricerca su Insediamenti e Ambiente. Rivista internazionale di cultura urbanistica, No 8 (2011): The territory of the city between the ancient and the historical. Metamorphosis of the languages
Antigen-specific helper T cells in the responses of DBA/2 mice to a syngeneic tumour, P815
Creators: name: Hancock, Elizabeth Jane
Publisher: name: University of British Columbia
Year: 2010

description: When injected with live P815 tumour cells, DBA/2 mice developed cytotoxic cells reactive to the tumour. In addition, T helper cells from tumour-bearing mice enhanced the iri vitro generation of cytotoxic cells from normal DBA/2 spleen cells. The helper cells had the following properties (1) expression of the Thy-1.2 antigen; (2) resistance to y-radiation; (3) specific enhancement of the cytotoxic response to P815; (4) detectability in P815-bearing mice at the peak of cytotoxic cell activity; (5) activity in the early phase of cytotoxic cell activation. In parallel to the development of helper cell activity, suppressor cells were generated which suppressed the cytotoxic response to P815. These suppressor cells were removed by pre-treating mice with low doses of cyclophosphamide. High doses of cyclophosphamide reduced the cytotoxic response to both P815 and C57B1/6 alloantigens. Cyclophosphamide treatment reduced the frequency of cytotoxic precursor cells directed against P815, and an antigen-reactive helper cell involved in interleukin 2 production. Both interleukin 2 and thymocytes from P815-primed mice, restored the cytotoxic response against P815, to normal levels. Twenty six percent of animals primed with tumour cells cleared a challenge dose of P815 faster than unprimed control mice. Of these, 88% survived longer than the control animals. Eighteen percent of the recipients of cells from tumour-primed mice, cleared a challenge dose of P815 faster than mice injected with normal cells. Of these 53% survived significantly longer than control groups given either normal cells or no cells at all. Cells from mice primed to PPD showed significantly enhanced proliferative responses to soluble and P815-bound PPD, when compared with unprimed animals. However, cells from only a few PPD-primed mice showed enhanced cytotoxicity against P815 tumour cells, and PPD-primed cells either did not alter, or suppressed, the cytotoxic response of normal DBA/2 spleen cells, when stimulated with PPD-coated P815.
Magnetic processes in a collapsing dense core. II Fragmentation. Is there a fragmentation crisis ?
Creators: name: Hennebelle, P.
name: Teyssier, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Abridged. A large fraction of stars are found in binary systems. It is therefore important for our understanding of the star formation process, to investigate the fragmentation of dense molecular cores. We study the influence of the magnetic field, ideally coupled to the gas, on the fragmentation in multiple systems of collapsing cores. We present high resolution numerical simulations performed with the RAMSES MHD code starting with a uniform sphere in solid body rotation and a uniform magnetic field parallel to the rotation axis. We pay particular attention to the strength of the magnetic field and interpret the results using the analysis presented in a companion paper. The results depend much on the amplitude, $A$, of the perturbations seeded initially. For a low amplitude, $A=0.1$, we find that for values of the mass-to-flux over critical mass-to-flux ratio, $μ$, as high as $μ= 20$, the centrifugally supported disk which fragments in the hydrodynamical case, is stabilized and remains axisymmetric. Detailed investigations reveals that this is due to the rapid growth of the toroidal magnetic field induced by the differential motions within the disk. For values of $μ$ smaller $\simeq 5$, corresponding to larger magnetic intensities, there is no centrifugally supported disk because of magnetic braking. When the amplitude of the perturbation is equal to $A=0.5$, each initial peak develops independently and the core fragments for a large range of $μ$. Only for values of $μ$ close to 1 is the magnetic field able to prevent the fragmentation. Since a large fraction of stars are binaries, the results of low magnetic intensities preventing the fragmentation in case of weak perturbations, is problematic. We discuss three possible mechanisms...
description: Accepted for publication in A&A
Conditional relevance
Creators: name: Turowetz, Jason
Publisher: name: OSF
Year: 2022
Subjects: Conversation Analysis
Encyclopedia
Ethnomethodology
Interactional Linguistics

description: Conditional relevance refers to the property that obtains between an initiating action and its type-fitted responsive action whereby the producer of an initial action makes relevant the production of a type fitted response by its recipient. The conditional relevance of the responsive action, in other words, is conditional upon the production of a first initiating action.
อินเดีย : ตลาดที่มีศักยภาพสำหรับผู้ประกอบการไทย
Creators: name: ธิดารัตน์ โชคสุชาติ
Publisher: name: มหาวิทยาลัยหัวเฉียวเฉลิมพระเกียรติ
Year: 2012
Subjects: อินเดีย, ตลาดที่มีศักยภาพ, ผู้ประกอบการไทย

description: 1, 6, วารสารวิชาการและวิจัย มทร.พระนคร
Guidelines for Enhancing the Cultural Tourism Marketing in Singburi Province
Creators: name: Sarunporn Chuankrerkul
Publisher: name: Naresuan University Graduate School
Year: 2019
Subjects: Tourist Satisfaction
Tourist Expectation
IPA Analysis
Cultural Tourism Marketing
Singburi Province

description: Journal of Community Development Research (Humanities and Social Sciences), 12, 2, 65-72
Robustness of planar random graphs to targeted attacks
Creators: name: Kownacki, J. -P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: In this paper, robustness of planar trivalent random graphs to targeted attacks of highest connected nodes is investigated using numerical simulations. It is shown that these graphs are relatively robust. The nonrandom node removal process of targeted attacks is also investigated as a special case of non-uniform site percolation. Critical exponents are calculated by measuring various properties of the distribution of percolation clusters. They are found to be roughly compatible with critical exponents of uniform percolation on these graphs.
description: 9 pages, 11 figures. Added references.Corrected typos. Paragraph added in section II and in the conclusion. Published version
IrCrMnZ (Z=Al, Ga, Si, Ge) Heusler alloys as electrode materials for MgO-based magnetic tunneling junctions: A first-principles study
Creators: name: Roy, Tufan
name: Tsujikawa, Masahito
name: Shirai, Masafumi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study IrCrMnZ (Z=Al, Ga, Si, Ge) systems using first-principles calculations from the perspective of their application as the electrode materials of MgO-based MTJs. These materials have highly spin-polarized conduction electrons with partially occupied $Δ_1$ band, which is important for coherent tunneling in parallel magnetization configuration. The Curie temperatures of IrCrMnAl and IrCrMnGa are very high (above 1300 K) as predicted from mean-field-approximation. The stability of ordered phase against various antisite disorders has been investigated. We discuss here the effect of "spin-orbit-coupling" on the electronic structure around Fermi level. Further, we investigate the electronic structure of IrCrMnZ/MgO heterojunction along (001) direction. IrCrMnAl/MgO and IrCrMnGa/MgO maintain half-metallicity even at the MgO interface, with no interfacial states at/around Fermi level in the minority-spin channel. Large majority-spin conductance of IrCrMnAl/MgO/IrCrMnAl and IrCrMnGa/MgO/IrCrMnGa is reported from the calculation of ballistic spin-transport property for parallel magnetization configuration. We propose IrCrMnAl/MgO/IrCrMnAl and IrCrMnGa/MgO/IrCrMnGa as promising MTJs with a weaker temperature dependence of tunneling magnetoresistance ratio, owing to their very high Curie temperatures.
description: 24 pages, 11 figures
Numerical studies of the nuclear hyperfine interactions in manganese dichloride tetrahydrate
Creators: name: McLeod, Beverly Ann
Publisher: name: University of British Columbia
Year: 2010

description: The nuclear magnetic resonance of oriented nuclei (NMRON) is a useful technique for the study of magnetic solids, and is especially important for investigating very dilute systems. The work in this thesis complements experimental NMRON studies of ⁵⁴Mn-MnCl₂.4H₂O by the nuclear orientation group at the University of British Columbia. The manganese nucleus experiences a hyperfine interaction which is due primarily to a magnetic (Zeeman) interaction, but which also has a small contribution due to the interaction between the electric quadrupole moment eQ of the nucleus and the electric field gradient eq arising from the surrounding ionic charges in the lattice. The latter interaction can be treated as a perturbation on the Zeeman interaction and results in shifts in the nuclear spin energy levels, so that there are 21 resonant frequencies for spin 1. The electric field gradient is calculated by treating these ions as point charges, and a computer program to do this calculation is developed. The result of this lattice sum, eq , has to be multiplied by the Sternheimer anti-shielding factor which takes into account the amplifying effect due to the distortion by the field gradient of the electrons on the atom of interest: this factor is known for the manganese ion. As a check, the case of ⁵⁵Mn in MnF₂ is investigated because the value of |e²qQ| has been derived from experiment and an independent calculation. The results for e²qQ/h are: experiment - 11.7±0.03 MHz; previous calculation - 8.8 MHz; our calculation - 8.5±0.4 MHz. [the rest of the abstract can be found in the attached PDF file]
Valley polarization effects on the localization in graphene Landau levels
Creators: name: Pereira, Ana L. C.
name: Schulz, P. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Effects of disorder and valley polarization in graphene are investigated in the quantum Hall regime. We find anomalous localization properties for the lowest Landau level (LL), where disorder can induce wavefunction delocalization (instead of localization), both for white-noise and gaussian-correlated disorder. We quantitatively identify the contribution of each sublattice to wavefunction amplitudes. Following the valley (sublattice) polarization of states within LLs for increasing disorder we show: (i) valley mixing in the lowest LL is the main effect behind the observed anomalous localization properties, (ii) the polarization suppression with increasing disorder depends on the localization for the white-noise model, while, (iii) the disorder induces a partial polarization in the higher Landau levels for both disorder models.
description: 5 pages, 6 figures, extended version, with 2 new figures added
ACCESS & LRG-BEASTS: a precise new optical transmission spectrum of the ultrahot Jupiter WASP-103b
Creators: name: Kirk, James
name: Rackham, Ben
name: MacDonald, Ryan
name: López-Morales, Mercedes
name: Espinoza, Néstor
name: Lendl, Monika
name: Wilson, Jamie
name: Osip, David J.
name: Wheatley, Peter J.
name: Skillen, Ian
name: Apai, Dániel
name: Bixel, Alex
name: Gibson, Neale P.
name: Jordan, Andrés
name: Lewis, Nikole K.
name: Louden, Tom
name: McGruder, Chima D.
name: Nikolov, Nikolay
name: Rodler, Florian
name: Weaver, Ian C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a new ground-based optical transmission spectrum of the ultrahot Jupiter WASP-103b ($T_{eq} = 2484$K). Our transmission spectrum is the result of combining five new transits from the ACCESS survey and two new transits from the LRG-BEASTS survey with a reanalysis of three archival Gemini/GMOS transits and one VLT/FORS2 transit. Our combined 11-transit transmission spectrum covers a wavelength range of 3900--9450A with a median uncertainty in the transit depth of 148 parts-per-million, which is less than one atmospheric scale height of the planet. In our retrieval analysis of WASP-103b's combined optical and infrared transmission spectrum, we find strong evidence for unocculted bright regions ($4.3σ$) and weak evidence for H$_2$O ($1.9σ$), HCN ($1.7σ$), and TiO ($2.1σ$), which could be responsible for WASP-103b's observed temperature inversion. Our optical transmission spectrum shows significant structure that is in excellent agreement with the extensively studied ultrahot Jupiter WASP-121b, for which the presence of VO has been inferred. For WASP-103b, we find that VO can only provide a reasonable fit to the data if its abundance is implausibly high and we do not account for stellar activity. Our results highlight the precision that can be achieved by ground-based observations and the impacts that stellar activity from F-type stars can have on the interpretation of exoplanet transmission spectra.
description: 33 pages, 17 figures, 7 tables. Accepted for publication in AJ
title: Plight of the Gameur : Inhibitors to Empathic Connection with Representation of Suffering in Outreach Games
Creators: name: Purzycki, Kristopher John
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2013

description: The field of serious game studies, while growing, is still working through the variables that create the conditions for a discernible effect towards real-world player behavior. One branch of serious games I refer to as outreach games aim at informing and prompting the player to take further real-world action. However, a significant impediment to this appeal is the relationship between the player and the game. Referring to the role of the flaneur in post-colonial literature, I describe how the relationship between whom I refer to as the gameur and the outreach game is similar to the urban wanderer, eavesdropping on another class of life. One thoroughly researched method of circumventing this difference is through the rhetorical appeal to empathy. After an evaluation of research in empathy, and its use in computer games, I demonstrate how empathy is impacted by representation and characterization within these persuasive texts. Finally, I conduct a small case study of Prisoners of War, an award-winning outreach game wherein I demonstrate how representation and characterization affect the gameur and the variety of impacts that affect her ability to consubstantiate with the in-game situations.
title: e-Forschungsberichte, Faszikel 3 (2019)
title: Research E-Papers, Faszikel 3 (2019)
title: Faszikel 3 (2019)
titleType: AlternativeTitle
Creators: name: Deutsches Archäologisches Institut
Publisher: name: Deutsches Archäologisches Institut
Year: 2019

description: Potentiale und Perspektiven der Forschung am Deutschen Archäologischen Institut...1–16 Potential and Prospects of Research at the German Archaeological Institute...17–32
Self-regulation of the reconnecting current layer in relativistic pair plasma reconnection
Creators: name: Zenitani, S.
name: Hesse, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate properties of the reconnecting current layer in relativistic pair plasma reconnection. We found that the current layer self-regulates its thickness when the current layer runs out current carriers, and so relativistic reconnection retains a fast reconnection rate. Constructing a steady state Sweet-Parker model, we discuss conditions for the current sheet expansion. Based on the energy argument, we conclude that the incompressible assumption is invalid in relativistic Sweet-Parker reconnection. The guide field cases are more incompressible than the anti-parallel cases, and we find a more significant current sheet expansion.
description: Accepted for publication in Astrophysical Journal (to appear in vol. 685)
Mysidae Haworth 1825
Creators: name: Talbot, Suzette
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Mysida
Mysidae

description: Mysidae Haworth, 1825  Members of the Mysidae are differentiated from other small shrimp-like crustaceans by examination of the tail fan. At the base of their uropodal endopods is a pair of clearly visible statocysts, each consisting of a translucent vesicle containing a dense, rounded or oval statolith. These conspicuous uropodal statocysts are a distinctive feature of the family.
Mysid females carry their developing young in a brood pouch or marsupium, made up of overlapping petal-like plates that project ventrally from the coxae of the posterior thoracic legs. They have 8 pairs of biramous thoracic limbs, but none of them are chelate. Mysids also lack gills, gas exchange taking place through the thin membranous inner lining of the well-developed carapace, which is not attached to the last 4 thoracic segments.
description: Published as part of Talbot, Suzette, 2009, A survey of Mysida from the Lizard Island area, Great Barrier Reef, Australia, Subfamily Siriellinae (Crustacea, Mysida, Mysidae), pp. 1-49 in Zootaxa 2114 on page 5, DOI: 10.5281/zenodo.187927
A Conversation with Jayaram Sethuraman
Creators: name: Hollander, Myles
Publisher: name: arXiv
Year: 2008
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Jayaram Sethuraman was born in the town of Hubli in Bombay Province (now Karnataka State) on October 3, 1937. His early years were spent in Hubli and in 1950 his family moved to Madras (now renamed Chennai). He graduated from Madras University in 1957 with a B.Sc. (Hons) degree in statistics and he earned his M.A. degree in statistics from Madras University in 1958. He earned a Ph.D. in statistics from the Indian Statistical Institute in 1962. Before returning to ISI in 1965 as an Associate Professor, he was a Research Associate at the University of North Carolina 1962--1963, at Michigan State University in 1963--1964 and at Stanford University 1964--1965. After three years at the ISI, Sethuraman moved to Florida State University in 1968 as Full Professor. During his career at FSU, he made sojourns as Visiting Professor to the University of Michigan, 1974--1975, the ISI in fall 1977, as a Visiting Professor and Acting Head, ISI Bangalore Center, 1979--1980. He was a senior ASA/NSF/NIST Fellow 1994--1995 and a Fulbright Senior Researcher at ISI Bangalore 1995--1996. Although Sethuraman officially retired on January 31, 2004 and was named Professor Emeritus at FSU, he continues to be extremely active. He participates in all activities in the Department of Statistics and holds a Courtesy Professor appointment in the Department of Religion. He held an appointment as Professor, University of Pittsburgh in the fall of 2004, and was a Fulbright Senior Lecturer at the Indian Statistical Institute of Technology, Chennai, 2005.
description: Published in at http://dx.doi.org/10.1214/07-STS237 the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Open Access an der TU Berlin. Services für TU-Angehörige
Creators: name: Universitätsbibliothek Der Technischen Universität Berlin
Publisher: name: Zenodo
Year: 2022
Subjects: International Open Access Week 2022, Open Access, Berlin, Technische Universität Berlin, Universitätsbibliothek, Open Access Services

description: Das Poster stellt die Open Access Services der Universitätsbibliothek der Technischen Universität Berlin (TU Berlin) für Angehörige der TU vor. Dazu gehören die Beratung rund um Open Access, der neu gegründete Open-Access-Verlag Berlin Universities Publishing, die Finanzierung von Open-Access-Publikationen und das Veröffentlichen von Open-Access-Publikationen auf Repositorien.
Fluctuations around the Tachyon Vacuum in Open String Field Theory
Creators: name: Kwon, O-Kab
name: Lee, Bum-Hoon
name: Park, Chanyong
name: Sin, Sang-Jin
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider quadratic fluctuations around the tachyon vacuum numerically in open string field theory. We work on a space ${\cal H}_N^{\rm vac}$ spanned by basis string states used in the Schnabl's vacuum solution. We show that the truncated form of the Schnabl's vacuum solution on ${\cal H}_N^{\rm vac}$ is well-behaved in numerical work. The orthogonal basis for the new BRST operator $\tilde Q$ on ${\cal H}_N^{\rm vac}$ and the quadratic forms of potentials for independent fields around the vacuum are obtained. Our numerical results support that the Schnabl's vacuum solution represents the minimum energy solution for arbitrary fluctuations also in open string field theory.
description: 16 pages, 2 figures, some comments and one table added, version to appear in JHEP
On Microscopic Origin of Integrability in Seiberg-Witten Theory
Creators: name: Marshakov, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss microscopic origin of integrability in Seiberg-Witten theory, following mostly the results of hep-th/0612019, as well as present their certain extension and consider several explicit examples. In particular, we discuss in more detail the theory with the only switched on higher perturbation in the ultraviolet, where extra explicit formulas are obtained using bosonization and elliptic uniformization of the spectral curve.
description: 24 pages, 1 figure, LaTeX, based on the talks at 'Geometry and Integrability in Mathematical Physics', Moscow, May 2006; 'Quarks-2006', Repino, May 2006; Twente conference on Lie groups, December 2006 and 'Classical and Quantum Integrable Models', Dubna, January 2007
Probing the low-luminosity GRB population with new generation satellite detectors
Creators: name: Imerito, A.
name: Coward, D.
name: Burman, R.
name: Blair, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compare the detection rates and redshift distributions of low-luminosity (LL) GRBs localized by Swift with those expected to be observed by the new generation satellite detectors on GLAST (now Fermi) and, in future, EXIST. Although the GLAST burst telescope will be less sensitive than Swift's in the 15--150 keV band, its large field-of-view implies that it will double Swift's detection rate of LL bursts. We show that Swift, GLAST and EXIST should detect about 1, 2 & 30 LL GRBs, respectively, over a 5-year operational period. The burst telescope on EXIST should detect LL GRBs at a rate of more than an order of magnitude greater than that of Swift's BAT. We show that the detection horizon for LL GRBs will be extended from $z \simeq 0.4$ for Swift to $z \simeq 1.1$ in the EXIST era. Also, the contribution of LL bursts to the observed GRB redshift distribution will contribute to an identifiable feature in the distribution at $z \simeq 1$.
description: 6 pages, 4 figures, accepted by MNRAS
title: e-Forschungsberichte, Faszikel 3 (2020)
title: Research E-Papers, Faszikel 3 (2020)
title: Faszikel 3 (2020)
titleType: AlternativeTitle
Creators: name: Deutsches Archäologisches Institut
Publisher: name: Deutsches Archäologisches Institut
Year: 2020

description: Elephantine, Ägypten. Neues zu Lebenswirklichkeiten (Projekt »Realities of Life«) im späten Mittleren Reich am ersten Nilkatarakt. Weitere Forschungsergebnisse der Jahre 2019 und 2020...§ 1–11 Ziban Adi, Tigray, Äthiopien. Archäologische Ausgrabungen an der Fundstelle von Ziban Adi bei Wuqro. Die Herbstkampagne 2019 ...§ 1–9 Llanos de Mojos, Bolivien. Die Wiederentdeckung des »Mound Velarde«. Die Arbeiten des Jahres 2019...§ 1–10 Gaoping, China. Die Konstruktion der Mittleren Buddha-Halle des Chongming-Klosters im Kreis Gaoping, Provinz Shanxi. Die Arbeiten der Jahre 2018 bis 2020...§ 1–18 Heidelberg, Deutschland / Uruk, Irak. Uruk-Warka-Sammlung des Deutschen Archäologischen Instituts an der Universität Heidelberg. Konservierungsarbeiten der Jahre 2019 und 2020...§ 1–5 Athen, Griechenland. Werkstätten am Südrand der Kerameikosstraße: Töpferwerkstätten und eine Ölmühle des 5. Jahrhunderts v. Chr. Die Arbeiten des Jahres 2020...§ 1–4 Rom, Italien. Ein neues Forschungsprojekt auf dem Kapitol in Rom. Grabungen im Garten des ehemaligen preußischen Hospitals, Kampagne 2018...§ 1–43 Selinunt, Italien. Selinunt. Die Arbeiten des Jahres 2019...§ 1–74 Baraba Waldsteppe, Russland. Vom Jagen und Fischen zur Viehzucht in der Waldsteppe des Ob’-Irtysch Zwischenstromlands (Westsibirien). Bioarchäologische Forschungen in der Baraba Waldsteppe, Russland aus den Jahren 2018 bis 2020...§ 1–12 Nordwestspanien. Der Nordwesten der Iberischen Halbinsel als integrative Kontaktzone indigener und römischer Bevölkerung. Die Arbeiten des Jahres 2019 ...§ 1–9 Pamir-Gebirge, Tadschikistan. Tadschikisch-Deutsche Pamir Expedition. Die Arbeiten des Jahres 2019...§ 1–16 Pergamon, Türkei. Pergamon. Die Arbeiten des Jahres 2019...§ 1–17 Fujairah, United Arab Emirates. Archaeological investigations at multiple tomb sites in Dibba. Season 2019 ...§ 1–11
title: e-Forschungsberichte, Faszikel 2 (2020)
title: Research E-Papers, Faszikel 2 (2020)
title: Faszikel 2 (2020)
titleType: AlternativeTitle
Creators: name: Deutsches Archäologisches Institut
Publisher: name: Deutsches Archäologisches Institut
Year: 2020

description: Landschaftsarchäologie am DAI. Die Arbeiten der Jahre 2018 und 2019...§ 1–10 Dahschur, Ägypten. Die Arbeiten der Herbstkampagne 2019 und Frühjahrskampagne 2020...§ 1–18 Rama, Ethiopia (Tigray). Routes of Interaction – New Research in the Rama Valley...§ 1–7 Olympia, Griechenland. Die Arbeiten der Jahre 2018 bis zum Frühjahr 2020...§ 1–16 Olympia, Griechenland. Das Leonidaion in Olympia. Die Arbeiten des Jahres 2019...§ 1–11 Olympia, Griechenland. Magna Graecia, Italien. Die Architektur der Schatzhäuser von Olympia und ihre Provenienz aus dem griechischen Westen...§ 1–8 Teheran, Iran. Das Projekt TehranDigital der Außenstelle Teheran: ›Nur‹ Digitalisierung?...§ 1–4 Fabrateria Nova, Italien (San Giovanni Incarico, località La Civita, Provinz Frosinone). Sekundäre Anbauten am spätrepublikanischen Tempel A...§ 1–7 Rome, Italy. The collection of Roman statuary in the Villa Wolkonsky, the British (and former German) ambassador‘s seat in Rome, made available online on iDAI.objects/Arachne...§ 1–14 Rom, Italien. Die Villa von Sette Bassi. Geomagnetische Untersuchungen 2018...§ 1–8 Oglachty, Russland. Die Menschen von Oglachty in Südsibirien: Welchen Platz hatten sie in der Geschichte Eurasiens im frühen ersten Jahrtausend n. Chr.? Die Arbeiten des Jahres 2019 (Projekte »Silk Road Fashion« und »BAYCHRON«)...§ 1–29 Göbekli Tepe, Turkey. A brief summary of research at a new World Heritage Site (2015–2019)...§ 1–13 Iznik, Türkei. Mythen statt Titel, Bilder statt Schrift. Von den numismatischen Mitteln in einem Konkurrenzkampf. Die Arbeiten der Jahre 2019 und 2020 (15.3.2019–14.3.2020)...§ 1–14 Bezirk Charkiw, Ukraine. Die Infrastruktur im Gebiet der Dnepr-Severskij Donec-Wasserscheide in spätrömischer Zeit und zu Beginn der Völkerwanderungszeit. Die Arbeiten des Jahres 2019...§ 1–6
The complete lowest order chiral Lagrangian from a little box
Creators: name: DeGrand, Thomas
name: Schaefer, Stefan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We recently performed a pilot study determining the parameters of the leading order chiral Lagrangian from distributions of the eigenvalues of a quenched Dirac operator coupled to an imaginary isospin chemical potential. We complement a quick survey of our recent preprint arXiv:0708.1731 [hep-lat] by addressing some points raised during discussions at the conference.
description: 7 pages, 2 figures: contribution to XXV International Symposium on Lattice Field Theory, July 2007, Regensburg