cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Theoretical approaches to SSI-STEAM teaching: developing and evaluating an SSI-STEAM program
Creators: name: Mang, Ha My Anna
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Science education in the 21st century emphasises the need to develop students’ scientific literacy and enable them to be active and informed citizens. To achieve this goal, science education researchers are calling for science teachers to consider the arts-integrated Science, Technology, Engineering and Mathematics (STEAM) approach to reframe how they teach science, so that their teaching may better connect students to authentic real-world problems. However, there have been concerns that STEAM is not fully capable of connecting students cognitively and emotionally to real-world problems. One way to potentially address this gap is to integrate the socio-scientific issues (SSI) perspective into STEAM instruction. This study uses the design-based research (DBR) method to identify key principles that can inform the development of an SSI-STEAM framework and translate it into program development. Furthermore, this study has developed an evaluation rubric to validate a newly developed SSI-STEAM integrated climate change program and identify gaps and weaknesses in other existing climate change programs. The findings indicate that there are four key principles needed for effective SSI-STEAM learning: Enacting values and practices, Affective learning, Authentic contexts and activities, and Interdisciplinary thinking and integrated practices. The translation of these principles into program design is facilitated by the use of the instructional 5E inquiry model. The 5E model engages students with five key stages of learning: Engage, Explore, Explain, Elaborate, and Evaluate. However, the findings of this study highlight the need to add a sixth stage known as Enact to the 5E inquiry model, and thus create a 6E inquiry model. Furthermore, the evaluation of various climate change programs illustrates that many programs are not adequately addressing arts-related practices or/and the SSI component in science learning. This study has implications for supporting teachers in their implementation of innovative instructional practices that can deeply and meaningfully engage students with science within and beyond the boundaries of the classroom.
Nonstrict inequality for Schmidt coefficients of three-qubit states
Creators: name: Tamaryan, Levon
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Generalized Schmidt decomposition of pure three-qubit states has four positive and one complex coefficients. In contrast to the bipartite case, they are not arbitrary and the largest Schmidt coefficient restricts severely other coefficients. We derive a nonstrict inequality between three-qubit Schmidt coefficients, where the largest coefficient defines the least upper bound for the three nondiagonal coefficients or, equivalently, the three nondiagonal coefficients together define the greatest lower bound for the largest coefficient. In addition, we show the existence of another inequality which should establish an upper bound for the remaining Schmidt coefficient.
description: final version
Principal Component Analysis of Cavity Beam Position Monitor Signals
Creators: name: Kim, Y. I.
name: Boogert, S. T.
name: Honda, Y.
name: Lyapin, A.
name: Park, H.
name: Terunuma, N.
name: Tauchi, T.
name: Urakawa, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Model-independent analysis (MIA) methods are generally useful for analysing complex systems in which relationships between the observables are non-trivial and noise is present. Principle Component Analysis (PCA) is one of MIA methods allowing to isolate components in the input data graded to their contribution to the variability of the data. In this publication we show how the PCA can be applied to digitised signals obtained from a cavity beam position monitor (CBPM) system on the example of a 3-cavity test system installed at the Accelerator Test Facility 2 (ATF2) at KEK in Japan. We demonstrate that the PCA based method can be used to extract beam position information, and matches conventional techniques in terms of performance, while requiring considerably less settings and data for calibration.
Nested composite NOT gates for quantum computation
Creators: name: Jones, Jonathan A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Composite pulses provide a simple means for constructing quantum logic gates which are robust to small errors in the control fields used to implement them. Here I describe how antisymmetric composite NOT gates can be nested to produce gates with arbitrary tolerance of errors.
description: 4 pages, no figures; revised version in press at Physics Letters A
Gravitational collapse and thermalization in the hard wall model
Creators: name: Craps, Ben
name: Kiritsis, Elias
name: Rosen, Christopher
name: Taliotis, Anastasios
name: Vanhoof, Joris
name: Zhang, Hongbao
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a simple example of holographic thermalization in a confining field theory: the homogeneous injection of energy in the hard wall model. Working in an amplitude expansion, we find black brane formation for sufficiently fast energy injection and a scattering wave solution for sufficiently slow injection. We comment on our expectations for more sophisticated holographic QCD models.
description: 33 pages, 5 figures
Superconducting specific heat jump $ΔC_{\rm el} \propto T_c^β\ (β\approx 2)$ for K$_{1-x}$Na$_x$Fe$_2$As$_2$
Creators: name: Grinenko, V.
name: Efremov, D. V.
name: Drechsler, S. -L.
name: Aswartham, S.
name: Gruner, D.
name: Roslova, M.
name: Morozov, I.
name: Nenkov, K.
name: Wurmehl, S.
name: Wolter, A. U. B.
name: Holzapfel, B.
name: Büchner
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a systematic study of the electronic specific heat jump ($ΔC_{\rm el}$) at the superconducting transition temperature $T_c$ of K$_{1-x}$Na$_x$Fe$_2$As$_2$. Both $T_c$ and $ΔC_{\rm el}$ monotonously decrease with increasing $x$. The specific heat jump scales approximately with a power-law, $ΔC_{\rm el} \propto T_c^β$, with $β\approx 2$ determined by the impurity scattering rate, in contrast to most iron-pnictide superconductors, where the remarkable Bud'ko-Ni-Canfield (BNC) scaling $ΔC_{\rm el} \propto T^3$ has been found. Both the $T$ dependence of $C_{\rm el}(T)$ in the superconducting state and the nearly quadratic scaling of $ΔC_{\rm el}$ at $T_c$ are well described by the Eliashberg-theory for a two-band $d$-wave superconductor with weak pair-breaking due to nonmagnetic impurities. The disorder induced by the Na substitution significantly suppresses the small gaps leading to gapless states in the slightly disordered superconductor, which results in a large observed residual Sommerfeld coefficient in the superconducting state for $x > 0$.
description: 5 pages, 3 figures, and supplement
The scaling behavior of the insulator to plateau transition in topological band model
Creators: name: Priest, Jerimie
name: Lim, S. P.
name: Sheng, D. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The scaling behavior of the quantum phase transition from an insulator to a quantum Hall plateau state has often been examined within systems realizing Landau levels. We study the topological transition in energy band models with nonzero Chern number, which have the same topological property as a Landau level. We find that the topological band generally realizes the same universality class as the integer quantum Hall system in magnetic field for strong enough disorder scattering. Furthermore, the symmetry of the transition characterized by the relations: $σ_{xy}(E)=1-σ_{xy}(-E)$ for the Hall conductance and $σ_{xx}(E)=σ_{xx}(-E)$ for the longitudinal conductance is observed near the transition region. We also establish that the finite temperature dependence of the Hall conductance is determined by the inelastic scattering relaxation time, while the localization exponent $ν$ remains unchanged by such scattering.
description: 7 pages and 7 figures, minor revision
Eothenomys olitor
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Arvicolidae
Eothenomys
Eothenomys olitor

description: Eothenomys olitor (Thomas, 1911). Abstr. Proc. Zool. Soc. Lond., 100:50. TYPE LOCALITY: China, Yunnan, Chaotungfu. DISTRIBUTION: Yunnan (China). COMMENT: Placed in genus Anteliomys by Gromov and Polyakov, 1977:138; but see Corbet, 1978:101. ISIS NUMBER: 5301410008076005001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 4), pp. 477-504 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 487, DOI: 10.5281/zenodo.7353034
description: {"references": ["Gromov, I. M., and I. Ya. Polyakov. 1977. Fauna SSSR, Mlekopitayushchie, tom 3, vyp. 8 [Fauna of the USSR, vol. 3, pt. 8, Mammals]. Polevki [Voles (Microtinae)]. Nauka, Moscow-Leningrad, 504 pp. (in Russian)."]}
Kepler-63b: A Giant Planet in a Polar Orbit around a Young Sun-like Star
Creators: name: Sanchis-Ojeda, Roberto
name: Winn, Joshua N.
name: Marcy, Geoffrey W.
name: Howard, Andrew W.
name: Isaacson, Howard
name: Johnson, John Asher
name: Torres, Guillermo
name: Albrecht, Simon
name: Campante, Tiago L.
name: Chaplin, William J.
name: Davies, Guy R.
name: Lund, Mikkel L.
name: Carter, Joshua A.
name: Dawson, Rebekah I.
name: Buchhave, Lars A.
name: Everett, Mark E.
name: Fischer, Debra A.
name: Geary, John C.
name: Gilliland, Ronald L.
name: Horch, Elliott P.
name: Howell, Steve B.
name: Latham, David W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the discovery and characterization of a giant planet orbiting the young Sun-like star Kepler-63 (KOI-63, $m_{\rm Kp} = 11.6$, $T_{\rm eff} = 5576$ K, $M_\star = 0.98\, M_\odot$). The planet transits every 9.43 days, with apparent depth variations and brightening anomalies caused by large starspots. The planet's radius is $6.1 \pm 0.2 R_{\earth}$, based on the transit light curve and the estimated stellar parameters. The planet's mass could not be measured with the existing radial-velocity data, due to the high level of stellar activity, but if we assume a circular orbit we can place a rough upper bound of $120 M_{\earth}$ (3$σ$). The host star has a high obliquity ($ψ$ = $104^{\circ}$), based on the Rossiter-McLaughlin effect and an analysis of starspot-crossing events. This result is valuable because almost all previous obliquity measurements are for stars with more massive planets and shorter-period orbits. In addition, the polar orbit of the planet combined with an analysis of spot-crossing events reveals a large and persistent polar starspot. Such spots have previously been inferred using Doppler tomography, and predicted in simulations of magnetic activity of young Sun-like stars.
description: 14 pages, 9 figures, ApJ
Eothenomys proditor Hinton 1923
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Arvicolidae
Eothenomys
Eothenomys proditor

description: Eothenomys proditor Hinton, 1923. Ann. Mag. Nat. Hist., ser. 9, 11: 152. TYPE LOCALITY: China, Yunnan, Likiang Range (27° 30' N.), 13,000 ft. (3962 m). DISTRIBUTION: Mountains of Yunnan and Szechwan (China). COMMENT: Placed in genus Anteliomys by Gromov and Polyakov, 1977:138; but see Corbet, 1978:101. ISIS NUMBER: 5301410008076006001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 4), pp. 477-504 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 487, DOI: 10.5281/zenodo.7353034
description: {"references": ["Gromov, I. M., and I. Ya. Polyakov. 1977. Fauna SSSR, Mlekopitayushchie, tom 3, vyp. 8 [Fauna of the USSR, vol. 3, pt. 8, Mammals]. Polevki [Voles (Microtinae)]. Nauka, Moscow-Leningrad, 504 pp. (in Russian)."]}
Photoluminescence of freestanding single- and few-layer MoS2
Creators: name: Scheuschner, Nils
name: Ochedowski, Oliver
name: Kaulitz, Anne-Marie
name: Gillen, Roland
name: Schleberger, Marika
name: Maultzsch, Janina
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a photoluminescence study of freestanding and Si/SiO2 supported single- and few-layer MoS2. The single-layer exciton peak (A) is only observed in freestanding MoS2. The photoluminescence of supported single-layer MoS2 is instead originating from the A- (trion) peak as the MoS2 is n-type doped from the substrate. In bilayer MoS2, the van der Waals interaction with the substrate is decreasing the indirect band gap energy by up to ~ 80 meV. Furthermore, the photoluminescence spectra of suspended MoS2 can be influenced by interference effects.
Certainty in Heisenberg's uncertainty principle: Revisiting definitions for estimation errors and disturbance
Creators: name: Dressel, Justin
name: Nori, Franco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We revisit the definitions of error and disturbance recently used in error-disturbance inequalities derived by Ozawa and others by expressing them in the reduced system space. The interpretation of the definitions as mean-squared deviations relies on an implicit assumption that is generally incompatible with the Bell-Kochen-Specker-Spekkens contextuality theorems, and which results in averaging the deviations over a non-positive-semidefinite joint quasiprobability distribution. For unbiased measurements, the error admits a concrete interpretation as the dispersion in the estimation of the mean induced by the measurement ambiguity. We demonstrate how to directly measure not only this dispersion but also every observable moment with the same experimental data, and thus demonstrate that perfect distributional estimations can have nonzero error according to this measure. We conclude that the inequalities using these definitions do not capture the spirit of Heisenberg's eponymous inequality, but do indicate a qualitatively different relationship between dispersion and disturbance that is appropriate for ensembles being probed by all outcomes of an apparatus. To reconnect with the discussion of Heisenberg, we suggest alternative definitions of error and disturbance that are intrinsic to a single apparatus outcome. These definitions naturally involve the retrodictive and interdictive states for that outcome, and produce complementarity and error-disturbance inequalities that have the same form as the traditional Heisenberg relation.
description: 15 pages, 8 figures, published version
Οι ανανεώσιμες πηγές ενέργειας στην Ελλάδα : ανάλυση υφιστάμενης κατάστασης και προβλέψεις
Creators: name: Αράπογλου, Βασίλειος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: ΑΠΕ
subject: Ανανεώσιμες πηγές ενέργειας

description: Η εξάντληση αποθεμάτων των συμβατικών πηγών ενέργειας, σε συνάρτηση με τη συνεχώς αυξανόμενη ανάγκη για ενέργεια και τη σταδιακή υποβάθμιση του περιβάλλοντος, έχει πιέσει τις σημερινές κοινωνίες να επιδιώξουν τη χρήση ανανεώσιμων πηγών ενέργειας (ΑΠΕ). Οι ΑΠΕ αποτελούνται από φυσικά διαθέσιμους πόρους, οι οποίοι βρίσκονται σε άφθονη ποσότητα στο φυσικό περιβάλλον, δεν εξαντλούνται με τη χρήση, αλλά ανανεώνονται διαρκώς και μπορούν να μετασχηματιστούν σε ηλεκτρική ή θερμική μορφή ενέργειας. Τέτοιοι πόροι είναι ο ήλιος, οι υδατοπτώσεις, ο άνεμος, η θαλάσσια κίνηση η βιομάζα, και η γεωθερμία. Στην παρούσα διπλωματική εργασία παρουσιάζονται αναλυτικά οι διάφορες μορφές ΑΠΕ, όπως η ηλιακή, η αιολική, η υδροηλεκτρική, η βιομάζα, η γεωθερμική, και η ωκεάνια ενέργεια, εξετάζοντας τις τεχνολογίες, τις προκλήσεις, τα οφέλη, και τις προοπτικές τους στο ενεργειακό τοπίο της Ελλάδας. Ενσωματώνεται ανάλυση των υφιστάμενης κατάστασης και διεξάγονται προβλέψεις για τις μελλοντικές αποδόσεις του κλάδου, χρησιμοποιώντας την μεθοδολογία χρονοσειρών. Τέλος, παρουσιάζονται συμπεράσματα και προβλέψεις σχετικά με τη συνoλικά παραγόμενη ηλεκτρική ενέργεια από ΑΠΕ.
Eothenomys regulus
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Arvicolidae
Eothenomys
Eothenomys regulus

description: Eothenomys regulus (Thomas, 1907). Proc. Zool. Soc. Lond., 1906:863. TYPE LOCALITY: Korea, Mingyong, 110 mi. (177 km) S.E. Seoul. DISTRIBUTION: Hopei (China); Korea. COMMENT: Regarded by Allen, 1940, The Mammals of China and Mongolia, Am. Mus. Nat. Hist., 2(2):621-1350, Ellerman and Morrison-Scott, 1951:666, and Gromov and Polyakov, 1977:147, as a synonym of Clethrionomys rufocanus; but see Corbet, 1978:102.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 4), pp. 477-504 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 487, DOI: 10.5281/zenodo.7353034
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.", "Gromov, I. M., and I. Ya. Polyakov. 1977. Fauna SSSR, Mlekopitayushchie, tom 3, vyp. 8 [Fauna of the USSR, vol. 3, pt. 8, Mammals]. Polevki [Voles (Microtinae)]. Nauka, Moscow-Leningrad, 504 pp. (in Russian)."]}
Eothenomys shanseius
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Arvicolidae
Eothenomys
Eothenomys shanseius

description: Eothenomys shanseius (Thomas, 1908). Proc. Zool. Soc. Lond., 1908:643. TYPE LOCALITY: China, Shansi, 100 mi. (161 km) N.W. Taiyuenfu. DISTRIBUTION: Shansi and perhaps Hopei (China). COMMENT: Regarded by Allen, 1940, The Mammals of China and Mongolia, Am. Mus. Nat. Hist., 2(2): 621 -1350, Ellerman and Morrison-Scott, 1951:666, and Gromov and Polyakov, 1977:147, as a synonym of Clethrionomys rufocanus; but see Corbet, 1978: 102.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 4), pp. 477-504 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 487, DOI: 10.5281/zenodo.7353034
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.", "Gromov, I. M., and I. Ya. Polyakov. 1977. Fauna SSSR, Mlekopitayushchie, tom 3, vyp. 8 [Fauna of the USSR, vol. 3, pt. 8, Mammals]. Polevki [Voles (Microtinae)]. Nauka, Moscow-Leningrad, 504 pp. (in Russian)."]}
Blazed oblique plane microscopy reveals scale-invariant inference of brain-wide population activity
Creators: name: Hoffmann, Maximilian
name: Henninger, Jörg
name: Veith, Johannes
name: Richter, Lars
name: Judkewitz, Benjamin
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2023
Subjects: subject: microscopy
subject: danionella
subject: brain-wide imaging
subject: 500 Natural sciences and mathematics::500 Natural sciences::500 Natural sciences and mathematics
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Due to the size and opacity of vertebrate brains, it has until now been impossible to simultaneously record neuronal activity at cellular resolution across the entire adult brain. As a result, scientists are forced to choose between cellular-resolution microscopy over limited fields-of-view or whole-brain imaging at coarse-grained resolution. Bridging the gap between these spatial scales of understanding remains a major challenge in neuroscience. Here, we introduce blazed oblique plane microscopy to perform brain-wide recording of neuronal activity at cellular resolution in an adult vertebrate. Contrary to common belief, we find that inferences of neuronal population activity are near-independent of spatial scale: a set of randomly sampled neurons has a comparable predictive power as the same number of coarse-grained macrovoxels. Our work thus links cellular resolution with brain-wide scope, challenges the prevailing view that macroscale methods are generally inferior to microscale techniques and underscores the value of multiscale approaches to studying brain-wide activity.
The mechanism for directional hearing in fish
Creators: name: Veith, Johannes
name: Chaigne, Thomas
name: Svanidze, Ana
name: Dressler, Lena Elisa
name: Hoffmann, Maximilian
name: Gerhardt, Ben
name: Judkewitz, Benjamin
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2024
Subjects: subject: directional hearing
subject: biophysics
subject: danionella
subject: 500 Natural sciences and mathematics::500 Natural sciences::500 Natural sciences and mathematics
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Locating sound sources such as prey or predators is critical for survival in many vertebrates. Terrestrial vertebrates locate sources by measuring the time delay and intensity difference of sound pressure at each ear1-5. Underwater, however, the physics of sound makes interaural cues very small, suggesting that directional hearing in fish should be nearly impossible6. Yet, directional hearing has been confirmed behaviourally, although the mechanisms have remained unknown for decades. Several hypotheses have been proposed to explain this remarkable ability, including the possibility that fish evolved an extreme sensitivity to minute interaural differences or that fish might compare sound pressure with particle motion signals7,8. However, experimental challenges have long hindered a definitive explanation. Here we empirically test these models in the transparent teleost Danionella cerebrum, one of the smallest vertebrates9,10. By selectively controlling pressure and particle motion, we dissect the sensory algorithm underlying directional acoustic startles. We find that both cues are indispensable for this behaviour and that their relative phase controls its direction. Using micro-computed tomography and optical vibrometry, we further show that D. cerebrum has the sensory structures to implement this mechanism. D. cerebrum shares these structures with more than 15% of living vertebrate species, suggesting a widespread mechanism for inferring sound direction.
A note on the spinor construction of Spin Foam amplitudes
Creators: name: Immirzi, Giorgio
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: I discuss the use of spinors in the construction of spin-foam models, in particular the form of the closure and simplicity constraints for triangles that are space-like, i.e. with (area)$^2=\half S^{IJ}S_{IJ}>0$, regardless of whether they belong the tetrahedra with a space-like or time-like normal, emphasizing the role of the light-like 4-vector $u_tσ^I\bar u_t$. In the quantization of the model, with the representations of SL(2,$\mathbb{C}$) acting on spaces of functions of light-like vectors, one may use the canonical basis of SU(2) representations, or the pseudobasis limited to the discrete representations of SU(1,1); in alternative it is proposed to use instead a basis of eigenstates of $(L_3,K_3)$, which might give matrix elements and vertex functions with the same classical limit. A detailed example of a small triangulation is presented, which among other things indicates, on the basis of a classical calculation, that it would be impractical to limit oneself to tetrahedra with time-like normals.
description: 20 pages, 1 figure; in v.2 typos corrected, presentation improved, referee comments accepted
title: Chinese Food Network in British Columbia, 1880-1940
title: A Socio-economic History of Migrant Entrepreneurship
titleType: Subtitle
Creators: name: Wang, Xin
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: Food Network
subject: Migrant Entrepreneurship
subject: Canada
subject: Colonialism
subject: Chinese Migration
subject: Diverse Economies
subject: Embeddedness
subject: 300 Social sciences::300 Social sciences, Sociology, Anthropology::300 Social sciences

description: A Chinese food network specializing in vegetable crops has existed since the onset of labor migration from southeast China to British Columbia in the 19th century. By 1940, the network achieved market prominence in the local production and distribution of vegetables. This thesis examines the socio-economic history of the network’s emergence and development during the historical period between 1880 and 1940 – the height of white supremacy and discriminatory policies. It seeks to explain how the economic success came about under structural disadvantages. Two theoretical concerns guide the methodologies and historical analysis: How do social relations bear on economic actions? How do migrants interact with the environment in which they find themselves? To deconstruct the narrative that Chinese market gardeners, peddlers, and greengrocers were victims simply pushed into the agri-food sector, this thesis reads for economic difference from data scattered across secondary literature, archival materials, and oral histories. Economic subjectivities and actions are re-aligned to present an alternative picture: small-business entrepreneurship in agriculture as a vehicle to a good life. Adopting mixed embeddedness approach, it traces the interplay between the actors within the network and the structural context of colonialism and capitalism. It identifies the ways in which they utilized resources and devised strategies to adapt to and transform societies. Furthermore, the multifaceted ways in which social relations, especially migrant networks, influenced the emergence and development of the Chinese food network are elaborated.
Eothenomys smithi
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Arvicolidae
Eothenomys
Eothenomys smithi

description: Eothenomys smithi (Thomas, 1905). Ann. Mag. Nat. Hist., ser. 7, 15:493. TYPE LOCALITY: Japan, Honshu, Kobe. DISTRIBUTION: Dogo, Honshu, Shikoku, and Kyushu (Japan). COMMENT: Includes kageus; see Ota and Jameson, 1961, Ecology, 42:184- 186, and Tanaka, 1971, Jpn. J. Zool., 16: 163-176. MLJ by pers. comm, with Y. Imaizumi considers kageus a separate species. Placed by Tanaka, 1971, Jpn. J. Zool., 16:163- 176, in the monotypic genus Phaulomys Thomas 1905; but see Corbet, 1978:102, and Aimi, 1980, Mem. Fac. Sci. Kyoto Univ. Ser. Biol., 8:35-84. Placed by Gromov and Polyakov, 1977:134, in genus Alticola, subgenus Aschizomys.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 4), pp. 477-504 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 487, DOI: 10.5281/zenodo.7353034
description: {"references": ["Tanaka, R. 1971. A research into variation in molar and external features among a population of the Smith's red-backed vole for elucidation of its systematic rank. Japanese Journal of Zoology, 16: 163 - 176.", "Aimi, M. 1980. A revised classification of the Japanese red-backed voles. Memoirs of the Faculty of Science, Kyoto University, Series of Biology, 8: 35 - 84.", "Gromov, I. M., and I. Ya. Polyakov. 1977. Fauna SSSR, Mlekopitayushchie, tom 3, vyp. 8 [Fauna of the USSR, vol. 3, pt. 8, Mammals]. Polevki [Voles (Microtinae)]. Nauka, Moscow-Leningrad, 504 pp. (in Russian)."]}
On the $π$$\mathfrak{F}$-norm and the $\mathfrak{H}$-$\mathfrak{F}$-norm of a finite group
Creators: name: Chen, Xiaoyu
name: Guo, Wenbin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20D10, 20D15

description: Let $\mathfrak{H}$ be a Fitting class and $\mathfrak{F}$ a formation. We call a subgroup $\mathcal{N}_{\mathfrak{H},\mathfrak{F}}(G)$ of a finite group $G$ the $\mathfrak{H}$-$\mathfrak{F}$-norm of $G$ if $\mathcal{N}_{\mathfrak{H},\mathfrak{F}}(G)$ is the intersection of the normalizers of the products of the $\mathfrak{F}$-residuals of all subgroups of $G$ and the $\mathfrak{H}$-radical of $G$. Let $π$ denote a set of primes and let $\mathfrak{G}_π$ denote the class of all finite $π$-groups. We call the subgroup $\mathcal{N}_{\mathfrak{G}_π,\mathfrak{F}}(G)$ of $G$ the $π\mathfrak{F}$-norm of $G$. A normal subgroup $N$ of $G$ is called $π\mathfrak{F}$-hypercentral in $G$ if either $N=1$ or $N>1$ and every $G$-chief factor below $N$ of order divisible by at least one prime in $π$ is $\mathfrak{F}$-central in $G$. Let $Z_{π\mathfrak{F}}(G)$ denote the $π\mathfrak{F}$-hypercentre of $G$, that is, the product of all $π\mathfrak{F}$-hypercentral normal subgroups of $G$. In this paper, we study the properties of the $\mathfrak{H}$-$\mathfrak{F}$-norm, especially of the $π\mathfrak{F}$-norm of a finite group $G$. In particular, we investigate the relationship between the $π'\mathfrak{F}$-norm and the $π\mathfrak{F}$-hypercentre of $G$.
Isolating taxon specific biomarkers from fossil bilaterians
Creators: name: Kabaran, Leylâ Eileen Janice
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Biomarkers are fossilised lipids that can provide unique information regarding extinct organisms. Taxon-specific-biomarkers can assist in phylogenetic reconstruction of extinct taxa, and also increase the accuracy of molecular clock calibration. Whilst there has been extensive biomarker analysis of ancient unicellular organisms, research into their metazoan counterparts is sparse. This project aims to isolate taxon-specific-biomarkers from fossil representatives of three bilaterian super-phyla: Deutrostomia, Ecdysozoa, and Lophotrochozoa. This project also attempts to decipher the depositional and diagenetic pathways for fossil and rock samples from the Lower Ordovician Emanuel Formation, Western Australia. This research revealed aliphatic and aromatic hydrocarbon profiles from bilaterian fossils using flash (curie-point) pyrolysis gas chromatography-mass spectrometry. The hydrocarbons isolated include n-alkanes (C6-C21), n-alkenes, and naphthalene and phenanthrene derivatives. Fourier-transform infrared spectroscopy analysis of fossil and rock samples detected the presence of degraded biomacromolecules. Gas chromatography-mass spectrometry analysis of rock samples enabled description of the depositional environment, overall organic matter input, and degree of thermal alteration for the Emanuel Formation. Whilst isolation of taxon-specific biomarkers remains elusive, these results show that it is possible to obtain hydrocarbon profiles from Ordovician animal fossils. Hence it is possible to obtain novel information regarding animal biochemistry otherwise not recorded in the fossil record.
Automated computation of scattering amplitudes
Creators: name: Ossola, Giovanni
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review some of the recent advances in the computation of one-loop scattering amplitudes which led to the construction of efficient and automated computational tools for NLO predictions. Particular attention is devoted to unitarity-based methods and integrand-level reduction techniques. Extensions of one-loop integrand-level techniques to higher orders are also briefly illustrated.
description: 13 pages, v2: references corrected. Presented at the "International Workshop on Advanced Computing and Analysis Techniques in Physics Research" (ACAT2013), Beijing, China, May 2013
Quantum cosmology and late-time singularities
Creators: name: Kamenshchik, A. Yu.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The development of dark energy models has stimulated interest to cosmological singularities, which differ from the traditional Big Bang and Big Crunch singularities. We review a broad class of phenomena connected with soft cosmological singularities in classical and quantum cosmology. We discuss the classification of singularities from the geometrical point of view and from the point of view of the behaviour of finite size objects, crossing such singularities. We discuss in some detail quantum and classical cosmology of models based on perfect fluids (anti-Chaplygin gas and anti-Chaplygin gas plus dust), of models based on the Born-Infeld-type fields and of the model of a scalar field with a potential inversely proportional to the field itself. We dwell also on the phenomenon of the phantom divide line crossing in the scalar field models with cusped potentials. Then we discuss the Friedmann equations modified by quantum corrections to the effective action of the models under considerations and the influence of such modification on the nature and the existence of soft singularities. We review also quantum cosmology of models, where the initial quantum state of the universe is presented by the density matrix (mixed state). Finally, we discuss the exotic singularities arising in the brane-world cosmological models.
description: final version, published in Classical and Quantum Gravity as a topical review
The unreasonable ubiquitousness of quasi-polynomials
Creators: name: Woods, Kevin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 05A15, 52C07, 03B10

description: A function g, with domain the natural numbers, is a quasi-polynomial if there exists a period m and polynomials p_0,p_1,...,p_{m-1} such that g(t)=p_i(t) for t=i mod m. Quasi-polynomials classically -- and "reasonably" -- appear in Ehrhart theory and in other contexts where one examines a family of polyhedra, parametrized by a variable t, and defined by linear inequalities of the form a_1x_1+...+a_dx_d <= b(t). Recent results of Chen, Li, Sam; Calegari, Walker; and Roune, Woods show a quasi-polynomial structure in several problems where the a_i are also allowed to vary with t. We discuss these "unreasonable" results and conjecture a general class of sets that exhibit various (eventual) quasi-polynomial behaviors: sets S_t of d-tuples of natural numbers that are defined with quantifiers ("for all", "there exists"), boolean operations (and, or, not), and statements of the form a_1(t)x_1+...+a_d(t)x_d <= b(t), where a_i(t) and b(t) are polynomials in t. These sets are a generalization of sets defined in the Presburger arithmetic. We prove several relationships between our conjectures, and we prove several special cases of the conjectures. The title is a play on Eugene Wigner's "The unreasonable effectiveness of mathematics in the natural sciences''.
description: Abstract updated to reflect title's play on Eugene Wigner's "The unreasonable effectiveness of mathematics in the natural sciences''. 23 pages. Improved exposition. Extended abstract published in the proceedings of FPSAC 2013
Hyperacrius Miller 1896
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Arvicolidae
Hyperacrius

description: Hyperacrius Miller, 1896. N. Am. Fauna, 12:54. COMMENT: Reviewed by Phillips, 1969, J. Mammal., 50:457-474. Placed in tribe Clethrionomyini by Gromov and Polyakov, 1977:136. Closely related to Alticola, Eothenomys and Dinaromys (JC). Closely related to Prometheomys (WVK). Related either to Prometheomys or to Lagurus (CAR). ISIS NUMBER: 5301410008077000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 4), pp. 477-504 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 487, DOI: 10.5281/zenodo.7353034
description: {"references": ["Phillips, C. J. 1969. Review of central Asian voles of the genus Hyperacrius, with comments on zoogeography, ecology, and ectoparasites. Journal of Mammalogy, 50: 457 - 474.", "Gromov, I. M., and I. Ya. Polyakov. 1977. Fauna SSSR, Mlekopitayushchie, tom 3, vyp. 8 [Fauna of the USSR, vol. 3, pt. 8, Mammals]. Polevki [Voles (Microtinae)]. Nauka, Moscow-Leningrad, 504 pp. (in Russian)."]}
Comment on "Force-field functor theory" [arXiv:1306.4332]
Creators: name: Vaia, Ruggero
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This comment regards a recently published preprint by R.Babbush, J.A.Parkhill, and A.Aspuru-Guzik, arXiv:1306.4332.
description: 2 pages
Frenkel electron and a spinning body in a curved background
Creators: name: Ramírez, Walberto Guzmán
name: Deriglazov, Alexei A.
name: Pupasov-Maksimov, Andrey M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We develop a variational formulation of a particle with spin in a curved space-time background. The model is based on a singular Lagrangian which provides equations of motion, a fixed value of spin and Frenkel condition on spin-tensor. Comparing our equations with those of Papapetrou we conclude that the Frenkel electron in a gravitational field has the same behavior as a rotating body in the pole-dipole and leading-spin approximation. Due to constraints presented in the formulation, position space is endowed with a noncommutative structure induced by the spin of the particle. Therefore, the model provides a physically interesting example of a noncommutative particle in a curved background.
description: 19 pages, minor changes requested by the referee, references added
Hyperacrius fertilis
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Arvicolidae
Hyperacrius
Hyperacrius fertilis

description: Hyperacrius fertilis (True, 1894). Proc. U.S. Nat. Mus., 17: 10. TYPE LOCALITY: India, Kashmir, Pir Panjal Mountains. DISTRIBUTION: Kashmir; N. Pakistan. ISIS NUMBER: 5301410008077001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 4), pp. 477-504 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 487, DOI: 10.5281/zenodo.7353034
Principle of Maximum Entanglement Entropy and Local Physics of Correlated many-body Electron-Systems
Creators: name: Lanatà, Nicola
name: Strand, Hugo U. R.
name: Yao, Yongxin
name: Kotliar, Gabriel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We argue that, because of the quantum-entanglement, the local physics of the strongly-correlated materials at zero temperature is described in very good approximation by a simple generalized Gibbs distribution, which depends on a relatively small number local quantum thermodynamical potentials. We demonstrate that our statement is exact in certain limits, and we perform numerical calculations of the iron compounds FeSe and FeTe and of the elemental cerium by employing the Gutzwiller Approximation (GA) that strongly support our theory in general.
description: Manuscript: 5 pages, 3 figures. Supplemental material: 1 page, 1 figure
Holographic Entanglement Entropy for 4D Conformal Gravity
Creators: name: Alishahiha, Mohsen
name: Astaneh, Amin Faraji
name: Mozaffar, M. Reza Mohammadi
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the proposal for holographic entanglement entropy in higher derivative gravities, we compute holographic entanglement entropy for the conformal gravity in four dimensions which turns out to be finite. However, if one subtracts the contribution of the four dimensional Gauss-Bonnet term, the corresponding entanglement entropy has a divergent term and indeed restricted to an Einstein solution of the conformal gravity, the resultant entanglement entropy is exactly the same as that in the Einstein gravity. We will also make a comment on the first law of the entanglement thermodynamics for the conformal gravity in four dimensions.
description: 16 pages, Published Version
Testing locality and noncontextuality with the lowest moments
Creators: name: Bednorz, Adam
name: Bednorz, Witold
name: Belzig, Wolfgang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quest for fundamental test of quantum mechanics is an ongoing effort. We here address the question of what are the lowest possible moments needed to prove quantum nonlocality and noncontextuality without any further assumption -- in particular without the often assumed dichotomy. We first show that second order correlations can always be explained by a classical noncontextual local-hidden-variable theory. Similar third-order correlations also cannot violate classical inequalities in general, except for a special state-dependent noncontextuality. However, we show that fourth-order correlations can violate locality and state-independent noncontextuality. Finally we obtain a fourth-order continuous-variable Bell inequality for position and momentum, which can be violated and might be useful in Bell tests closing all loopholes simultaneously.
description: 12 pages, 1 figure
A Light Sterile Neutrino from Friedberg-Lee Symmetry
Creators: name: He, Xiao-Gang
name: Liao, Wei
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Light sterile neutrinos of mass about an eV with mixing $\tilde U_{ls}$ of a few percent to active neutrinos may solve some anomalies shown in experimental data related to neutrino oscillation. How to have light sterile neutrinos is one of the theoretical problems which have attracted a lot of attentions. In this article we show that such an eV scale light sterile neutrino candidate can be obtained in a seesaw model in which the right-handed neutrinos satisfy a softly-broken Friedberg-Lee (FL) symmetry. In this model a right-handed neutrino is guaranteed by the FL symmetry to be light comparing with other two heavy right-handed neutrinos. It can be of eV scale when the FL symmetry is softly broken and can play the role of eV scale sterile neutrino needed for explaining the anomalies of experimental data. This model predicts that one of the active neutrino is massless. We find that this model prefers inverted hierarchy mass pattern of active neutrinos than normal hierarchy. An interesting consequence of this model is that realizing relatively large $|{\tilde U}_{es}|$ and relatively small $|{\tilde U}_{μs}|$ in this model naturally leads to a relatively small $|{\tilde U}_{τs}|$. This interesting prediction can be tested in future atmospheric or solar neutrino experiments.
description: 14 pages, references added, version for publication in PLB
Hexagonal flow v_6 as a superposition of elliptic v_2 and triangular v_3 flows
Creators: name: Bravina, L. V.
name: Johansson, B. H. Brusheim
name: Eyyubova, G. Kh.
name: Korotkikh, V. L.
name: Lokhtin, I. P.
name: Malinina, L. V.
name: Petrushanko, S. V.
name: Snigirev, A. M.
name: Zabrodin, E. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Partial contributions of elliptic v_2 and triangular v_3 flows to the hexagonal v_6 flow are studied within the HYDJET++ model for Pb+Pb collisions at sqrt{s}=2.76 TeV. Scaling of the ratio v_6^{1/6}{Psi_2} / v_2^{1/2}{Psi_2} in the elliptic flow plane, Psi_2, is predicted in the range 1 < p_T < 4 GeV/c for semicentral and semiperipheral collisions. Jets increase this ratio by about 10% and also cause its rise at p_T > 3.5 GeV/c. The part of v_6 coming from v_2 is instantly increasing as the reaction becomes more peripheral, whereas the contribution of v_3 to v_6 drops. This behavior explains the experimentally observed increase of correlations between second and sixth harmonics and decrease of correlations between third and sixth harmonics with rising impact parameter $b$. Our study favors the idea that basic features of the hexagonal flow can be understood in terms of the interplay of elliptic and triangular flows.
description: Final version
Hyperacrius wynnei
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Arvicolidae
Hyperacrius
Hyperacrius wynnei

description: Hyperacrius wynnei (Blanford, 1881). J. Asiat. Soc. Bengal, 49:244. TYPE LOCALITY: Pakistan, Punjab, Murree (probably N. of the City). DISTRIBUTION: Kagan and Swat (N. Pakistan). COMMENT: Type locality discussed by Phillips, 1969, J. Mammal., 50:462. ISIS NUMBER: 5301410008077002001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 4), pp. 477-504 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 487, DOI: 10.5281/zenodo.7353034
description: {"references": ["Phillips, C. J. 1969. Review of central Asian voles of the genus Hyperacrius, with comments on zoogeography, ecology, and ectoparasites. Journal of Mammalogy, 50: 457 - 474."]}
Linear magnetoconductivity in multiband spin-density-wave metals with nonideal nesting
Creators: name: Koshelev, A. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In several parent iron-pnictide compounds the resistivity has an extended range of linear magnetic field dependence. We argue that there is a simple and natural explanation of this behavior. Spin density wave transition leads to Fermi-surface reconstruction corresponding to strong modification of the electronic spectrum near the nesting points. It is difficult for quasiparticles to pass through these points during their orbital motion in magnetic field, because they must turn sharply. As the area of the Fermi surface affected by the nesting points increases proportionally to magnetic field, this mechanism leads to the linear magnetoresistance. The crossover between the quadratic and linear regimes takes place at the field scale set by the SDW gap and scattering rate.
description: 5 pages, 2 figures, accepted to Phys. Rev. B, Rapid Communications