cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Power Allocation for Finite-Blocklength IR-HARQ
Creators: name: Wang, Wenyu
name: Zhu, Minhao
name: Shen, Kaiming
name: Wang, Zhaorui
name: Cui, Shuguang
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This letter concerns the power allocation across the multiple transmission rounds under the Incremental Redundancy Hybrid Automatic Repeat reQuest (IR-HARQ) policy, in pursuit of an energy-efficient way of fulfilling the outage probability target in the finite-blocklength regime. We start by showing that the optimization objective and the constraints of the above power allocation problem all depend upon the outage probability. The main challenge then lies in the fact that the outage probability cannot be written analytically in terms of the power variables. To sidestep this difficulty, we propose a novel upper bound on the outage probability in the finite-blocklength regime, which is much tighter than the existing ones from the literature. Most importantly, by using this upper bound to approximate the outage probability, we can recast the original intractable power allocation problem into a geometric programming (GP) form--which can be efficiently solved by the standard method.
Echinosorex Blainville 1838
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Insectivora
Erinaceidae
Echinosorex

description: Echinosorex Blainville, 1838. C. R. Acad. Sci. Paris, 6: 742. COMMENT: Gymnura Lesson, 1827, is preoccupied; see Ellerman and Morrison-Scott, 1951:17; Medway, 1977:15. ISIS NUMBER: 5301403005001000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Insectivora, pp. 58-106 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 65, DOI: 10.5281/zenodo.7353001
description: {"references": ["Ellerman, J. R., and T. C. S. Morrison-Scott. 1951. Checklist of Palaearctic and Indian mammals 1758 to 1946. Trustees of the British Museum (Natural History), London, 810 pp.", "Medway, L. 1977. Mammals of Borneo: Field keys and an annotated checklist. Second ed. Monograph, Malay Branch of the Royal Asiatic Society, 7: 1 - 172."]}
Disputatio Ethica De Temperantia; 1637
Creators: name: Ebel, Kaspar
name: Stamm, Heinrich
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Widmungsempfänger: Wilhelmus de Brinc, Eberhardus Happelius, Christophorus Stumpfius, Henricus Wiccius, Justus Reichardus, Georgius Stammius, Henricus Stamm, Philippus Stamm, Henricus Kleinschmidt, Henricus Greberus, Laurentzius Stumpfius, Georgius Knöttel. - Beiträger: Johannes Tack, Henricus Kleinschmidt
Thermal conductivity of one-, two- and three-dimensional carbon
Creators: name: Pereira, Luiz Felipe C.
name: Savić, Ivana
name: Donadio, Davide
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Carbon atoms can form structures in one, two, and three dimensions due to its unique chemical versatility. In terms of thermal conductivity, carbon polymorphs cover a wide range from very low values with amorphous carbon to very high values with diamond, carbon nanotubes and graphene. Schwarzites are a class of three-dimensional fully covalent sp$^2$-bonded carbon polymorphs, with the same local chemical environment as graphene and carbon nanotubes, but negative Gaussian curvature. We calculate the thermal conductivity of a (10,0) carbon nanotube, graphene, and two schwarzites with different curvature, by molecular dynamics simulations based on the Tersoff empirical potential. We find that schwarzites present a thermal conductivity two orders of magnitude smaller than nanotubes and graphene. The reason for such large difference is explained by anharmonic lattice dynamics calculations, which show that phonon group velocities and mean free paths are much smaller in schwarzites than in nanotubes and graphene. Their reduced thermal conductivity, in addition to tunable electronic properties, indicate that schwarzites could pave the way towards all-carbon thermoelectric technology with high conversion efficiency.
Evaluation of insulating behavior by Pb Substitution and Pressure-Induced Superconductivity in La2O2Bi3-xPb1+xS6
Creators: name: Jha, Rajveer
name: Jarosla, Valenta
name: Tsujii, Naohito
name: Naka, Takashi
name: Kawahata, Takeshi
name: Kawashima, Chiduru
name: Takahashi, Hiroki
name: Mori, Takao
name: Mizuguchi, Yoshikazu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report synthesis, characterization, and physical properties of layered bismuth-sulfide compounds La2O2Bi3-xPb1+xS6. We synthesized a new La2O2Bi3PbS6 compound, whose crystal structure is similar to those of the La2O2Bi3AgS6 superconductor or La2O2Bi2Pb2S6 (insulator) with a four-layer-type conducting layer. The crystal structure of La2O2Bi3PbS6 is characterized in a tetragonal P4/nmm space group, and the lattice parameters are a = 4.084(1) Å and c = 19.71(2) Å. The obtained La2O2Bi3PbS6 sample exhibits narrow gap semiconductor (metallic-like) transport behavior with an anomaly near the 160 K. A metallic-like to insulator transition has been observed through Pb substitution, with increasing x in La2O2Bi3-xPb1+xS6. Furthermore, we applied external pressure for x = 0 and observed pressure-induced superconductivity. The onset of superconductivity appeared at 0.93 GPa, and the highest transition temperature was 3.1 K at 2.21 GPa.
description: 10 pages, 8 figures, accepted in Superconductor Science and Technology
NRC-Canada: Building the State-of-the-Art in Sentiment Analysis of Tweets
Creators: name: Mohammad, Saif M.
name: Kiritchenko, Svetlana
name: Zhu, Xiaodan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: In this paper, we describe how we created two state-of-the-art SVM classifiers, one to detect the sentiment of messages such as tweets and SMS (message-level task) and one to detect the sentiment of a term within a submissions stood first in both tasks on tweets, obtaining an F-score of 69.02 in the message-level task and 88.93 in the term-level task. We implemented a variety of surface-form, semantic, and sentiment features. with sentiment-word hashtags, and one from tweets with emoticons. In the message-level task, the lexicon-based features provided a gain of 5 F-score points over all others. Both of our systems can be replicated us available resources.
OʻSMIRLARNING ZIDDIYATSIZ SHAXSLARARO  MUNOSABATLARGA KIRISHA OLISHIDA SEPARATSIYANING AHMIYATI
Creators: name: Muxamedova, Madinaxon
Publisher: name: Zenodo
Year: 2025

description: Oʻsmirlik davri — shaxsning rivojlanishidagi muhim bosqich boʻlib, bu davrda oʻsmirlar oʻzligini, ijtimoiy rolini va boshqalar bilan aloqalarini shakllantiradilar. Ushbu maqolada oʻsmirlarning ziddiyatsiz shaxslararo munosabatlarga kirisha olishida separatsiyaning ahamiyati koʻrib chiqiladi. Separatsiya — bu oʻsmirning ota-onalaridan yoki boshqa muhim shaxslaridan mustaqil boʻlish jarayoni hisoblanadi. Bu jarayon oʻsmirlarning ijtimoiy va emotsional rivojlanishida muhim rol oʻynaydi.
Near-infrared integral field spectroscopy of Massive Young Stellar Objects
Creators: name: Murakawa, K.
name: Lumsden, S. L.
name: Oudmaijer, R. D.
name: Davies, B.
name: Wheelright, H. E.
name: Hoare, M. G.
name: Ilee, J. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present medium resolution ($R\approx5300$) $K$-band integral field spectroscopy of six MYSOs. The targets are selected from the RMS survey, and we used the NIFS on the Gemini North telescope. The data show various spectral line features including Br$γ$, CO, H$_2$, and \mbox{He\,{\sc i}}. The Br$γ$ line is detected in emission in all objects with $v_\mathrm{FWHM}\sim100$ -- 200 kms$^{-1}$. V645 Cyg shows a high-velocity P-Cygni profile between -800 kms$^{-1}$ and -300 kms$^{-1}$. We performed three-dimensional spectroastrometry to diagnose the circumstellar environment in the vicinity of the central stars using the Br$γ$ line. We measured the centroids of the velocity components with sub-mas precision. The centroids allow us to discriminate the blueshifted and redshifted components in a roughly east--west direction in both IRAS 18151--1208 and S106 in Br$γ$. This lies almost perpendicular to observed larger scale outflows. We conclude, given the widths of the lines and the orientation of the spectroastrometric signature, that our results trace a disc wind in both IRAS 18151--1208 and S106. The CO $ν=2-0$ absorption lines at low $J$ transitions are detected in IRAS 18151--1208 and AFGL 2136. We analysed the velocity structure of the neutral gas discs. In IRAS 18151--1208, the absorption centroids of the blueshifted and redshifted components are separated in a direction of north-east to south-west, nearly perpendicular to that of the larger scale $H_2$ jet. The position-velocity relations of these objects can be reproduced with central masses of 30 $M_{\sun}$ for IRAS 18151--1208 and 20 $M_{\sun}$ for AFGL 2136. We also detect CO $ν=2-0$ bandhead emission in IRAS 18151--1208, S106 and V645 Cyg. The results can be fitted reasonably with a Keplerian rotation model, with masses of 15, 20 and 20 $M_{\sun}$ respectively.
description: 17 pages, 10 figures, accepted by MNRAS
Echinosorex gymnurus
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Insectivora
Erinaceidae
Echinosorex
Echinosorex gymnurus

description: Echinosorex gymnurus (Raffles, 1821). Trans. Linn. Soc. Lond., 13:272. TYPE LOCALITY: Indonesia, Sumatra, Bencoolen. DISTRIBUTION: S., E., and N.C. Borneo; Labuan Isl.; Peninsular Thailand; Malay Peninsula; Sumatra. ISIS NUMBER: 5301403005001001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Insectivora, pp. 58-106 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 65, DOI: 10.5281/zenodo.7353001
Elucidating the z-dependence of the MOND acceleration (a_0) within the Scale Invariant Vacuum (SIV) paradigm
Creators: name: Gueorguiev, Vesselin G.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In a recent paper: ``On the time dependency of $a_0$" the authors claim that they have tested ``one of the predictions of the Scale Invariant Vacuum (SIV) theory on MOND" by studying the dependence of the Modified Newtonian Dynamics (MOND) acceleration at two data sets, low-$z$ ($3.2\times10^{-4}\le z\le 3.2\times10^{-2}$) and high-$z$ ($0.5\le z\le 2.5$). They claim ``both samples show a dependency of $a_0$ from $z$". Here, the work mentioned above is revisited. The explicit analytic expression for the $z$-dependence of the $a_0$ within the SIV theory is given. Furthermore, the first estimates of the $Ω_m$ within SIV theory give $Ω_{m}=0.28\pm 0.04$ using the low-z data only, while a value of $Ω_{m}=0.055$ is obtained using both data sets. This much lower $Ω_m$ leaves no room for non-baryonic matter! Unlike in the mentioned paper above, the slope in the $z$-dependence of $A_0=\log_{10}(a_0)$ is estimated to be consistent with zero Z-slope for the two data sets. Finally, the statistics of the data are consistent with the SIV predictions; in particular, the possibility of change in the sign of the slopes for the two data sets is explainable within the SIV paradigm; however, the uncertainty in the data is too big for the clear demonstration of a $z$-dependence yet.
description: 6 pages, 1 figure, to appear in a forthcoming MNRAS issue
DAOT: Domain-Agnostically Aligned Optimal Transport for Domain-Adaptive Crowd Counting
Creators: name: Zhu, Huilin
name: Yuan, Jingling
name: Zhong, Xian
name: Yang, Zhengwei
name: Wang, Zheng
name: He, Shengfeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.4.m

description: Domain adaptation is commonly employed in crowd counting to bridge the domain gaps between different datasets. However, existing domain adaptation methods tend to focus on inter-dataset differences while overlooking the intra-differences within the same dataset, leading to additional learning ambiguities. These domain-agnostic factors, e.g., density, surveillance perspective, and scale, can cause significant in-domain variations, and the misalignment of these factors across domains can lead to a drop in performance in cross-domain crowd counting. To address this issue, we propose a Domain-agnostically Aligned Optimal Transport (DAOT) strategy that aligns domain-agnostic factors between domains. The DAOT consists of three steps. First, individual-level differences in domain-agnostic factors are measured using structural similarity (SSIM). Second, the optimal transfer (OT) strategy is employed to smooth out these differences and find the optimal domain-to-domain misalignment, with outlier individuals removed via a virtual "dustbin" column. Third, knowledge is transferred based on the aligned domain-agnostic factors, and the model is retrained for domain adaptation to bridge the gap across domains. We conduct extensive experiments on five standard crowd-counting benchmarks and demonstrate that the proposed method has strong generalizability across diverse datasets. Our code will be available at: https://github.com/HopooLinZ/DAOT/.
description: 11 pages, 12 figures, 5 tables
Adaptive gradient-augmented level set method with multiresolution error estimation
Creators: name: Kolomenskiy, Dmitry
name: Nave, Jean-Christophe
name: Schneider, Kai
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35L65, 35Q35, 65M25, 65M50

description: A space-time adaptive scheme is presented for solving advection equations in two space dimensions. The gradient-augmented level set method using a semi-Lagrangian formulation with backward time integration is coupled with a point value multiresolution analysis using Hermite interpolation. Thus locally refined dyadic spatial grids are introduced which are efficiently implemented with dynamic quadtree data structures. For adaptive time integration, an embedded Runge-Kutta method is employed. The precision of the new fully adaptive method is analysed and speed up of CPU time and memory compression with respect to the uniform grid discretization are reported.
Deuteron electromagnetic form factors in transverse plane with a phenomenological Lagrangian approach
Creators: name: Liang, Cuiying
name: Dong, Yubing
name: Liang, Weihong
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A phenomenological Lagrangian approach is employed to study the electromagnetic properties of deuteron. The deuteron is regarded as a loosely bound state of a proton and a neutron. The deuteron electromagnetic form factors are expressed in light-front representation in the transverse plane. The transverse charge density of the deuteron is discussed.
description: 13 pages, 9 figures, submitted to Chinese Physics C
Erinaceus Linnaeus 1758
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Insectivora
Erinaceidae
Erinaceus

description: Erinaceus Linnaeus, 1758. Syst. Nat., 10th ed., 1:52. REVIEWED BY: J. Meester (JM). COMMENT: Includes Atelerix and Aethechinus; see Corbet, 1974, Part 1.4:2. ISIS NUMBER: 5301403005008000000 as Erinaceus. 5301403005006000000 as Aethechinus. 5301403005007000000 as Atelerix.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Insectivora, pp. 58-106 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 65, DOI: 10.5281/zenodo.7353001
description: {"references": ["Corbet, G. B. 1974. Family Macroscelididae. Part 1.5, Pp. 1 - 6, in The mammals of Africa: An identification manual (J. Meester and H. W. Setzer, eds.) [issued 10 Sep 1974]. Smithsonian Institution Press, Washington, D. C., not continuously paginated."]}
Erinaceus albiventris Wagner 1841
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Insectivora
Erinaceidae
Erinaceus
Erinaceus albiventris

description: Erinaceus albiventris Wagner, 1841. Schreber's Saugethiere, Suppl. 2: 22. TYPE LOCALITY: Unknown, Senegambia? DISTRIBUTION: Senegal to S. Somalia and the Zambezi River. COMMENT: Includes pruneri, spiculus, Atelerix faradjius, A. langi, and A. spinifex; see Corbet, 1974, Part 1.4:2, and Ansell, 1974, Puku, suppl., 1: 1-48. Gureev, 1979:167, listed this as a subspecies of frontalis, without comment. See Allen, 1939:20 for discussion of type locality. ISIS NUMBER: 5301403005007001001 as Atelerix albiventris.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Insectivora, pp. 58-106 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 65, DOI: 10.5281/zenodo.7353001
description: {"references": ["Corbet, G. B. 1974. Family Macroscelididae. Part 1.5, Pp. 1 - 6, in The mammals of Africa: An identification manual (J. Meester and H. W. Setzer, eds.) [issued 10 Sep 1974]. Smithsonian Institution Press, Washington, D. C., not continuously paginated.", "Gureev, A. A. 1979. Fauna SSSR, Mlekopitayutschie, tom. 4, vyp. 2. Nasekomoyadnye ... [Fauna of the USSR, Mammals, vol. 4, pt. 2. Insectivores (Mammalia, Insectivora)]. Nauka, Leningrad, 501 pp. (in Russian).", "Allen, G. M. 1939. A checklist of African mammals. Bulletin of the Museum of Comparative Zoology at Harvard College, 83: 1 - 763."]}
Using Volcano Plots and Regularized-Chi Statistics in Genetic Association Studies
Creators: name: Li, Wentian
name: Freudenberg, Jan
name: Suh, Young Ju
name: Yang, Yaning
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Applications (stat.AP)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Labor intensive experiments are typically required to identify the causal disease variants from a list of disease associated variants in the genome. For designing such experiments, candidate variants are ranked by their strength of genetic association with the disease. However, the two commonly used measures of genetic association, the odds-ratio (OR) and p-value, may rank variants in different order. To integrate these two measures into a single analysis, here we transfer the volcano plot methodology from gene expression analysis to genetic association studies. In its original setting, volcano plots are scatter plots of fold-change and t-test statistic (or -log of the p-value), with the latter being more sensitive to sample size. In genetic association studies, the OR and Pearson's chi-square statistic (or equivalently its square root, chi; or the standardized log(OR)) can be analogously used in a volcano plot, allowing for their visual inspection. Moreover, the geometric interpretation of these plots leads to an intuitive method for filtering results by a combination of both OR and chi-square statistic, which we term "regularized-chi". This method selects associated markers by a smooth curve in the volcano plot instead of the right-angled lines which corresponds to independent cutoffs for OR and chi-square statistic. The regularized-chi incorporates relatively more signals from variants with lower minor-allele-frequencies than chi-square test statistic. As rare variants tend to have stronger functional effects, regularized-chi is better suited to the task of prioritization of candidate genes.
description: 5 figures
Multi-wavelength spectroscopic analysis of the ULX Holmberg II X-1 and its nebula suggests the presence of a heavy black hole accreting from a B-type donor
Creators: name: Serantes, S. Reyero
name: Oskinova, L.
name: Hamann, W. -R.
name: Gómez-González, V. M.
name: Todt, H.
name: Pauli, D.
name: Soria, R.
name: Gies, D. R.
name: Torrejón, J. M.
name: Bulik, T.
name: Ramachandran, V.
name: Sander, A. A. C.
name: Bozzo, E.
name: Poutanen, J.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Ultra-luminous X-ray sources (ULXs) are high-mass X-ray binaries with an X-ray luminosity above $10^{39}$ erg s$^{-1}$. These ULXs can be powered by black holes that are more massive than $20M_\odot$, accreting in a standard regime, or lighter compact objects accreting supercritically. There are only a few ULXs with known optical or UV counterparts, and their nature is debated. Determining whether optical/UV radiation is produced by the donor star or by the accretion disc is crucial for understanding ULX physics and testing massive binary evolution. We conduct, for the first time, a fully consistent multi-wavelength spectral analysis of a ULX and its circumstellar nebula. We aim to establish the donor star type and test the presence of strong disc winds in the prototypical ULX Holmberg II X-1 (Ho II X-1). We intent to obtain a realistic spectral energy distribution of the ionising source, which is needed for robust nebula analysis. We acquired new UV spectra of Ho II X-1 with the HST and complemented them with archival optical and X-ray data. We explored the spectral energy distribution of the source and analysed the spectra using the stellar atmosphere code PoWR and the photoionisation code Cloudy. Our analysis of the X-ray, UV, and optical spectra of Ho II X-1 and its nebula consistently explains the observations. We do not find traces of disc wind signatures in the UV and the optical, rejecting previous claims of the ULX being a supercritical accretor. The optical/UV counterpart of HoII X-1 is explained by a B-type supergiant donor star. Thus, the observations are fully compatible with Ho II X-1 being a close binary consisting of an $\gtrsim 66\,M_\odot$ black hole accreting matter from an $\simeq 22 M_\odot$ B-supergiant companion. Also, we propose a possible evolution scenario for the system, suggesting that Ho II X-1 is a potential gravitational wave source progenitor.
description: Accepted in A&A. 14 pages (12 main body + 2 appendix), 6 figures, 6 tables
Combinatorial aspects of the conserved quantities of the tropical periodic Toda lattice
Creators: name: Takagi, Taichiro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The tropical periodic Toda lattice (trop p-Toda) is a dynamical system attracting attentions in the area of the interplay of integrable systems and tropical geometry. We show that the Young diagrams associated with trop p-Toda given by two very different definitions are identical. The first definition is given by a Lax representation of the discrete periodic Toda lattice, and the second one is associated with a generalization of the Kerov-Kirillov-Reshetikhin bijection in the combinatorics of the Bethe ansatz. By means of this identification, it is shown for the first time that the Young diagrams given by the latter definition are preserved under time evolution. This result is regarded as an important first step in clarifying the iso-level set structure of this dynamical system in general cases, i.e. not restricted to generic cases.
description: 27 pages, 9 figures
Observation of Self-Sustaining Relativistic Ionization Wave Launched by Sheath Field
Creators: name: McCormick, M. W.
name: Arefiev, A. V.
name: Quevedo, H. J.
name: Bengtson, R. D.
name: Ditmire, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present experimental evidence supported by simulations of a relativistic ionization wave launched into surrounding gas by the sheath field of a plasma filament with high energy electrons. Such filament is created by irradiating a clustering gas jet with a short pulse laser ($\sim$115 fs) at a peak intensity of $5 \times 10^{17}$ W/cm$^2$. We observe an ionization wave propagating radially through the gas for about 2 ps at 0.2-0.5 $c$ after the laser has passed, doubling the initial radius of the filament. The gas is ionized by the sheath field, while the longevity of the wave is explained by a moving field structure that traps the high energy electrons near the boundary, maintaining a strong sheath field despite the significant expansion of the plasma.
description: 5 pages, 5 figures
Very local interstellar spectra for galactic electrons, protons and helium
Creators: name: Potgieter, Marius S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The local interstellar spectra (LIS) for cosmic rays at energies below about 30 GeV/nuc are increasingly obscured from view at Earth by solar modulation, the lower the energy. These charged particles encounter significant changes in the heliosphere, over an 11-year cycle, which include processes such as convection, diffusion, adiabatic energy losses and gradient, curvature and current sheet drifts. Particle drifts cause chargesign dependent modulation and a 22-year cycle, adding complexity to determining the respective very LIS from observations only at Earth. However, with measurements now made by the Voyager 1 spacecraft in the vicinity of the heliopause, it is possible to determine a very LIS for galactic electrons between about 5 MeV and about 120 MeV. At these low energies also galactic protons observed in the outer heliosphere had been completely obscured by the so-call anomalous component which is accelerated inside the heliosheath. Since August 2012, these anomalous cosmic rays are substantially depleted at Voyager 1 so that also for cosmic ray ions it is now possible to obtain a lower limit to their very LIS. Combining numerical modelling of solar modulation with the accurate measurements by the PAMELA mission and with Voyager observations, the lower limit of the very LIS for electrons, protons and helium, and other ions, can be determined from about 5 MeV and above. These spectra are called heliopause spectra, considered to be the lowest possible very LIS. Also from an astrophysics point of view, the determination of what can be called a very LIS, not just an averaged galactic spectrum, is encouraging. The mentioned aspects are discussed, focussing on a comparison of recent heliospheric observations and corresponding solar modulation modelling.
description: Presented as a highlight talk by the author at the 33rd ICRC in Rio de Janeiro, Brazil. Submitted for publication in the proceedings of this conference, to be published in the Brazilian Journal of Physics
Erinaceus algirus Lereboullet 1842
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Insectivora
Erinaceidae
Erinaceus
Erinaceus algirus

description: Erinaceus algirus Lereboullet, 1842. Mem. Soc. Hist. Nat. Strasbourg., 3(2), art. QQ:4. TYPE LOCALITY: Algeria, Oran. DISTRIBUTION: Mauritania; Rio de Oro; S. W. Morocco to Libya; Canary Isis.; Balearic Isis.; Malta; coastal France and Spain (probably introduced). COMMENT: Gureev, 1979:167, listed this species as a subspecies of frontalis, without comment. ISIS NUMBER: 5301403005008001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Insectivora, pp. 58-106 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 65, DOI: 10.5281/zenodo.7353001
description: {"references": ["Gureev, A. A. 1979. Fauna SSSR, Mlekopitayutschie, tom. 4, vyp. 2. Nasekomoyadnye ... [Fauna of the USSR, Mammals, vol. 4, pt. 2. Insectivores (Mammalia, Insectivora)]. Nauka, Leningrad, 501 pp. (in Russian)."]}
Dispvtatio Logica, De Syllogismis Modalibus Puris; 1633
Creators: name: Ebel, Kaspar
name: Moter, Georg Daniel
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Widmungsempfänger: Simonus Leisrinck, Georgius Leuchterus, Johannes Lotichius, Danielus Moterus, Johannes Adamus Thilonus. - Beiträger: Conradus Greberus, Joh. Daniel Vietor
On the Intrinsic Continuum Linear Polarization of Classical Be Stars during Disk Growth and Dissipation
Creators: name: Halonen, Robbie J.
name: Jones, Carol E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the intrinsic continuum linear polarization from axisymmetric density distributions of gas surrounding classical Be stars during the formation and dissipation of their circumstellar disks. We implement a Monte Carlo calculation of the Stokes parameters with the use of the non-LTE radiative transfer code of Sigut & Jones (2007) to reproduce the continuous polarimetric spectra of classical Be stars. The scattering of light in the nonspherical circumstellar envelopes of classical Be stars produces a distinct polarization signature that can be used to study the physical nature of the scattering environment. In this paper, we highlight the utility of polarimetric measurements as important diagnostics in the modeling of these systems. We illustrate the effects of using self-consistent calculation of the thermal structure of the circumstellar gas on the characteristic wavelength-dependence of the polarization spectrum. In showing that the principal features of the polarization spectrum originate from different parts of the disk, we emphasize the capability of polarimetric observations to trace the evolution of the disk on critical scales. We produce models that approximate the disk formation and dissipation periods and illustrate how the polarimetric properties of these systems can have a pivotal role in determining the mechanism for mass decretion from the central star.
description: Accepted to ApJ on January 15, 2013
Universal Performance Bounds for Joint Self-Interference Cancellation and Data Detection in Full-Duplex Communications
Creators: name: He, Meng
name: Huang, Chuan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper studies the joint digital self-interference (SI) cancellation and data detection in an orthogonal-frequency-division-multiplexing (OFDM) full-duplex (FD) system, considering the effect of phase noise introduced by the oscillators at both the local transmitter and receiver. In particular, an universal iterative two-stage joint SI cancellation and data detection framework is considered and its performance bound independent of any specific estimation and detection methods is derived. First, the channel and phase noise estimation mean square error (MSE) lower bounds in each iteration are derived by analyzing the Fisher information of the received signal. Then, by substituting the derived MSE lower bound into the SINR expression, which is related to the channel and phase noise estimation MSE, the SINR upper bound in each iteration is computed. Finally, by exploiting the SINR upper bound and the transition information of the detection errors between two adjacent iterations, the universal bit error rate (BER) lower bound for data detection is derived.
Fast dynamos in spherical boundary-driven flows
Creators: name: Khalzov, I. V.
name: Cooper, C. M.
name: Forest, C. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We numerically demonstrate the feasibility of kinematic fast dynamos for a class of time-periodic axisymmetric flows of conducting fluid confined inside a sphere. The novelty of our work is in considering the realistic flows, which are self-consistently determined from the Navier-Stokes equation with specified boundary driving. Such flows can be achieved in a new plasma experiment, whose spherical boundary is capable of differential driving of plasma flows in the azimuthal direction. We show that magnetic fields are self-excited over a range of flow parameters such as amplitude and frequency of flow oscillations, fluid Reynolds (Re) and magnetic Reynolds (Rm) numbers. In the limit of large Rm, the growth rates of the excited magnetic fields are of the order of the advective time scales and practically independent of Rm, which is an indication of the fast dynamo.
description: Accepted for PRL in 2013
Erinaceus concolor Martin 1838
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Insectivora
Erinaceidae
Erinaceus
Erinaceus concolor

description: Erinaceus concolor Martin, 1838. Proc. Zool. Soc. Lond., 1837:103. TYPE LOCALITY: Turkey, near Trebizond. DISTRIBUTION: E. Europe; S. Russia; Asia Minor to Israel. COMMENT: Formerly included in europaeus; but see Kratochvil, 1975, Zool. Listy, 24:297-312; Kral, 1967, Zool. Listy, 16:239-252; Orlov, 1969, in II All-Union Theriol. Conf., p. 6, Novosibirsk. OLR includes this species in europaeus, as did Gureev, 1979:164, and Gromov and Baranova, 1981:9. Includes roumanicus; see Corbet, 1978:14.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Insectivora, pp. 58-106 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 65, DOI: 10.5281/zenodo.7353001
description: {"references": ["Kratochvil, J. 1975. Zur Kenntnis der Igel der Gattung Erinaceus in der CSSR (Insectivora, Mamm.). Zoologeskii Listy, 24: 297 - 312.", "Kral, B. 1967. Karyological analysis of two European species of the genus Erinaceus. Zoologeskii Listy, 16: 239 - 252.", "Orlov, V. N. 1969. Khromosomnye nabory ezhei vostochnoi Evropy [Chromosomal complements of hedgehogs in eastern Europe]. Pp. 6 - 7, in Materialy ko II Vsesoyuznykh Teriologicheskich Soveshchen po mlekopitayushchim [Materials in II All-Union Theriological Conference about mammals]. Novosibirsk.", "Gureev, A. A. 1979. Fauna SSSR, Mlekopitayutschie, tom. 4, vyp. 2. Nasekomoyadnye ... [Fauna of the USSR, Mammals, vol. 4, pt. 2. Insectivores (Mammalia, Insectivora)]. Nauka, Leningrad, 501 pp. (in Russian).", "Gromov, I. M., and G. I. Baranova (eds.). 1981. Katalog mlekopitayushchikh SSSR [Catalog of mammals of the USSR]. Nauka, Leningrad, 456 pp. (in Russian)."]}
Parity-time-symmetric closed form optical quadrimer waveguides
Creators: name: Gupta, Samit Kumar
name: Sarma, Amarendra K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A closed form PT symmetric quadrimer optical waveguide structure, reminiscent of the four-state quantum system found in quantum optics, is studied. The beam dynamics of the structure is studied numerically. The effect of inclusion of nonlinearity and dispersion is also briefly investigated and discussed
Bosonic spectrum of a correlated multiband system, BaFe1.80Co0.20As2, obtained via infrared spectroscopy
Creators: name: Panda, Chandan Kumar
name: Lee, Hong Gu
name: Park, Hwiwoo
name: Jung, Soon-Gil
name: Choi, Ki-Young
name: Hwang, Jungseek
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigated a single crystal BaFe(2-x)CoxAs2 (Co-doped BaFe2As2: Co-doped Ba122) with x = 0.20 using infrared spectroscopy. We obtained the bosonic spectrum from the measured spectrum using an extended Drude-Lorentz model for the normal state and a two-parallel-channel approach for the superconducting (SC) state, based on the generalized Allen formula. The coupling constant, maximum SC transition temperature, SC coherence length, and upper critical field were extracted from the bosonic spectrum. The superfluid plasma frequency and the London penetration depth were obtained from the optical conductivity. We compared the physical quantities of Co-doped Ba122 and K-doped Ba122 and found some interesting differences. Our results may be helpful for understanding superconductivity in doped Ba122 systems and may provide useful information on doped Ba122 systems for their applications.
description: 18 pages, 6 figures
title: ÐÐ¾Ð´ÐµÑÐ½Ð¸Ð·Ð°ÑÐ¸Ñ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ ÑÑÐ¾Ð²Ð½Ñ Ð-050 Ð¿ÑÑÐµÐ¼ ÑÐ¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Upgrading the electronic m-050 layer by improving the design
Creators: name: Ð¨Ð²ÐµÑÐºÐ¾Ð²Ð°, ÐÐ»Ð¸Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½ÑÐ¹ ÑÑÐ¾Ð²ÐµÐ½Ñ
Ð°Ð»ÑÐ¼Ð¸Ð½Ð¸ÐµÐ²ÑÐ¹ ÑÐ¿Ð»Ð°Ð²
Ð¿Ð¾Ð²ÐµÑÐºÐ°
ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑ
ÑÑÑÐ°Ð½Ð¾Ð²Ð¾ÑÐ½Ð¾-Ð·Ð°Ð¶Ð¸Ð¼Ð½Ð¾Ðµ Ð¿ÑÐ¸ÑÐ¿Ð¾ÑÐ¾Ð±Ð»ÐµÐ½Ð¸Ðµ
electronic level
aluminum alloy
verification
technological process
installation and clamping device

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ðµ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÐµÐ»ÐµÐ¹ ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð½Ð¾Ð³Ð¾ ÑÑÐ¾Ð²Ð½Ñ Ð-050 Ñ ÐºÐ¾ÑÐ¿ÑÑÐ¾Ð¼ Ð¸Ð· ÑÑÐ°Ð»Ð¸ Ð¸ Ñ ÐºÐ¾ÑÐ¿ÑÑÐ¾Ð¼ Ð¸Ð· Ð°Ð»ÑÐ¼Ð¸Ð½Ð¸ÐµÐ²Ð¾Ð³Ð¾ ÑÐ¿Ð»Ð°Ð²Ð°. Ð¡Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð¿ÑÐ¾ÑÐµÑÑ Ð¾Ð±ÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð´ÐµÑÐ°Ð»Ð¸ Â«ÐÐ¾ÑÐ¿ÑÑ ÑÑÐ¾Ð²Ð½Ñ Ð-050Â» Ð¸Ð· Ð°Ð»ÑÐ¼Ð¸Ð½Ð¸ÐµÐ²Ð¾Ð³Ð¾ ÑÐ¿Ð»Ð°Ð²Ð°. ÐÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ Ð²ÑÐ±Ð¾Ñ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð¾ÑÐ½Ð°ÑÑÐºÐ¸. Ð¡ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð´Ð¾ÐºÑÐ¼ÐµÐ½ÑÐ°ÑÐ¸Ð¸. Ð¡Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¾ ÑÑÑÐ°Ð½Ð¾Ð²Ð¾ÑÐ½Ð¾-Ð·Ð°Ð¶Ð¸Ð¼Ð½Ð¾Ðµ Ð¿ÑÐ¸ÑÐ¿Ð¾ÑÐ¾Ð±Ð»ÐµÐ½Ð¸Ðµ.
description: In this work, the M-050 electronic level indicators are compared with a steel body and an aluminum alloy body. The technological process of processing the part "M-050 level housing" made of aluminum alloy has been designed. Produced a selection of tooling. Formed a set of technological documentation. Designed mounting clamping device.
title: Automated Analysis of Underwater Imagery: Accomplishments, Products, and Vision
Creators: name: Richards, Benjamin L.
name: Beijbom, Oscar
name: Campbell, Matthew D.
name: Clarke, M. Elizabeth
name: Cutter, George
name: Dawkins, Matthew
name: Edington, Duane
name: Hart, Deborah R.
name: Hill, Marie C.
name: Hoogs, Anthony
name: Kriegman, David
name: Moreland, Erin E.
name: Oliver, Thomas A.
name: Michaels, William L.
name: Placentino, Michael
name: Rollo, Audrey K.
name: Thompson, Charles H.
name: Wallace, Farron
name: Williams, Ivor D.
name: Williams, Kresimir
Publisher: name: Pacific Islands Fisheries Science Center (U.S.)
Year: 2019

description: NOAA technical memorandum NMFS PIFSC ; 83
Erinaceus europaeus Linnaeus 1758
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Insectivora
Erinaceidae
Erinaceus
Erinaceus europaeus

description: Erinaceus europaeus Linnaeus, 1758. Syst. Nat., 10th ed., 1:52. TYPE LOCALITY: Sweden, S. Gothland Isl., Wamlingbo. DISTRIBUTION: Europe and W. Siberia; Shensi (China) east to W. and S. Korea, Manchuria, and adjacent Siberia. COMMENT: Includes amurensis; see Corbet, 1978:14; Gromov and Baranova, 1981:9. Also see Corbet and Hill, 1980:24, who treat it as a species; GBC now believes amurensis is best treated as a separate species until relationships with europaeus and concolor are resolved. ISIS NUMBER: 5301403005008002001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Insectivora, pp. 58-106 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 65, DOI: 10.5281/zenodo.7353001
description: {"references": ["Gromov, I. M., and G. I. Baranova (eds.). 1981. Katalog mlekopitayushchikh SSSR [Catalog of mammals of the USSR]. Nauka, Leningrad, 456 pp. (in Russian).", "Corbet, G. B., and J. E. Hill. 1980. A world list of mammalian species. British Museum (Natural History), London, 226 pp."]}
Difference Sequence Spaces Derived by Using Generalized Means
Creators: name: Manna, Atanu
name: Maji, Amit
name: Srivastava, P. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 46A45, 46A35

description: This paper deals with new sequence spaces $X(r, s, t ;Δ) $ for $X\in \{l_\infty, c, c_0\}$ defined by using generalized means and difference operator. It is shown that these spaces are complete normed linear spaces and the spaces $X(r, s, t ;Δ)$ for $X\in \{c, c_0\}$ have Schauder basis. Furthermore, the $α$-, $β$-, $γ$- duals of these sequence spaces are computed and also established necessary and sufficient conditions for matrix transformations from $X(r, s, t ;Δ)$ to $X$.
description: 15 pages. arXiv admin note: substantial text overlap with arXiv:1307.5817, arXiv:1307.5883, arXiv:1307.5884
Knud Haakonssen / Sebastian Olden-Jørgensen (Eds.), Ludvig Holberg (1684–1754). Learning and Literature in the Nordic Enlightenment. London, Routledge 2017
Creators: name: Räthel, Clemens
Publisher: name: Humboldt-Universität zu Berlin
Year: 2019
Subjects: subject: 948 Skandinavien und Finnland

description: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
A simple method to characterize the electrical and mechanical properties of micro-fibers
Creators: name: Castellanos-Gomez, Andres
Publisher: name: arXiv
Year: 2013
Subjects: subject: Physics Education (physics.ed-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A procedure to characterize the electrical and mechanical properties of micro-fibers is presented here. As the required equipment can be found in many teaching laboratories, it can be carried out by physics and mechanical/electrical engineering students. The electrical resistivity, mass density and Young's modulus of carbon micro-fibers have been determined using this procedure, obtaining values in very good agreement with the reference values. The Young's modulus has been obtained by measuring the resonance frequency of carbon fiber based cantilevers. In this way, one can avoid common approaches based on tensile or bending tests which are difficult to implement for microscale materials. Despite the simplicity of the experiments proposed here, they can be used to trigger in the students interest on the electrical and mechanical properties of microscale materials.
description: 4 figures + 1 appendix
Dispvtatio Logica I. De Nomine, Verbo Et Oratione; 1638
Creators: name: Ebel, Kaspar
name: Ursinus, Burckhard
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2018

description: Widmungsempfänger: Casparus Ebelius, Balthasarus Zahn, Christophorus Abelius, Johannes Happelius, Conradus Ursinus. - Beiträger: Cunradus Matthias, Antonius Ludovicus Beysenhirtz
title: Heat capacity measurements of Sr₂RuO₄ under uniaxial stress
Creators: name: Li, You-Sheng
Publisher: name: University of St Andrews
Year: 2018

description: The most-discussed pairing symmetry in Sr₂RuO₄ is chiral p-wave, 𝑝ₓ ± 𝑖𝑝[sub]𝑦, whose degeneracy is protected by the lattice symmetry. When the lattice symmetry is lowered by the application of a symmetry-breaking field, the degeneracy can be lifted, potentially leading to a splitting of the superconducting transition. To lift the degeneracy, the symmetry breaking field used in this study is uniaxial stress. Uniaxial stress generated by a piezo-electric actuator can continuously tune the electronic structure and in situ lower the tetragonal symmetry in Sr₂RuO₄. Previous studies of magnetic susceptibility and resistivity under uniaxial stress have revealed that there is a strong peak in T[sub]c when the stress is applied along the a-axis of Sr₂RuO₄. In addition, it has been proposed that the peak in T[sub]c coincides with a van Hove singularity in the band structure, and measurements of 𝐻[sub]𝑐₂ at the maximum T[sub]c indicate the possibility of an even parity condensate for Sr₂RuO₄ at the peak in Tc. In this thesis, the heat capacity approach is used to study the thermodynamic behavior of Sr₂RuO₄ under uniaxial stress applied along the crystallographic a-axis of Sr₂RuO₄. The first thermodynamic evidence for the peak in T[sub]c is obtained, proving that is a bulk property. However, the experimental data show no clear evidence for splitting of the superconducting transition; only one phase transition can be identified within the experimental resolution. The results impose strong constraints on the existence of a second phase transition, i.e. the size of the second heat capacity jump would be small or the second T[sub]c would have to be very close to the first transition. In addition to these results, I will present heat capacity data from the normal state of Sr₂RuO₄. The experimental results indicate that there is an enhancement of specific heat at the peak in T[sub]c, consistent with the existence of the van Hove singularity. The possibility of even parity superconductivity at the maximum T[sub]c has also been investigated. However, the heat capacity measurements are shown to be relatively insensitive to such a change, so it has not been possible to obtain strong and unambiguous evidence for whether it takes place or not.
Erinaceus frontalis A. Smith 1831
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Insectivora
Erinaceidae
Erinaceus
Erinaceus frontalis

description: Erinaceus frontalis A. Smith, 1831. S. Afr. Quart. J., 2: 10,29. TYPE LOCALITY: South Africa, " Cape Colony"; N. Graaff Reinet Dist. DISTRIBUTION: South Africa; Zimbabwe; Namibia; S.W. Angola. COMMENT: Includes angolae; see Corbet, 1974, Part 1.4:2. Type locality restricted by Ellerman et al., 1953:18. PROTECTED STATUS: CITES - Appendix II. ISIS NUMBER: 5301403005006001001 as Aethechinus angolae.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Insectivora, pp. 58-106 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on pages 65-66, DOI: 10.5281/zenodo.7353001
description: {"references": ["Corbet, G. B. 1974. Family Macroscelididae. Part 1.5, Pp. 1 - 6, in The mammals of Africa: An identification manual (J. Meester and H. W. Setzer, eds.) [issued 10 Sep 1974]. Smithsonian Institution Press, Washington, D. C., not continuously paginated."]}