cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Geometric discrete analogues of tangent bundles and constrained Lagrangian systems
Creators: name: Cuell, Charles
name: Patrick, George W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Discretizing variational principles, as opposed to discretizing differential equations, leads to discrete-time analogues of mechanics, and, systematically, to geometric numerical integrators. The phase space of such variational discretizations is often the set of configuration pairs, analogously corresponding to initial and terminal points of a tangent vectors. We develop alternative discrete analogues of tangent bundles, by extending tangent vectors to finite curve segments, one curve segment for each tangent vector. Towards flexible, high order numerical integrators, we use these discrete tangent bundles as phase spaces for discretizations of the variational principles of Lagrangian systems, up to the generality of nonholonomic mechanical systems with nonlinear constraints. We obtain a self-contained and transparent development, where regularity, equations of motion, symmetry and momentum, and structure preservation, all have natural expressions.
description: Typos corrected. New abstract. Diagrams added. Some additional information and a conclusions section added
Cosmological test of the Yilmaz theory of gravity
Creators: name: Ibison, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We test the Yilmaz theory of gravitation by working out the corresponding Friedmann-type equations generated by assuming the Friedmann-Robertson-Walker cosmological metrics. In the case that space is flat the theory is consistent only with either a completely empty universe or a negative energy vacuum that decays to produce a constant density of matter. In both cases the total energy remains zero at all times, and in the latter case the acceleration of the expansion is always negative. To obtain a more flexible and potentially more realistic cosmology, the equation of state relating the pressure and energy density of the matter creation process must be different from the vacuum, as for example is the case in the steady-state models of Gold, Bondi, Hoyle and others. The theory does not support the cosmological principle for curved space K =/= 0 cosmological metrics.
Einstein Gravity as a Nonholonomic Almost Kahler Geometry, Lagrange-Finsler Variables, and Deformation Quantization
Creators: name: Vacaru, Sergiu I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Symplectic Geometry (math.SG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 83C99, 53D55, 53B40, 53B35

description: A geometric procedure is elaborated for transforming (pseudo) Riemanian metrics and connections into canonical geometric objects (metric and nonlinear and linear connections) for effective Lagrange, or Finsler, geometries which, in their turn, can be equivalently represented as almost Kahler spaces. This allows us to formulate an approach to quantum gravity following standard methods of deformation quantization. Such constructions are performed not on tangent bundles, as in usual Finsler geometry, but on spacetimes enabled with nonholonomic distributions defining 2+2 splitting with associate nonlinear connection structure. We also show how the Einstein equations can be redefined in terms of Lagrange-Finsler variables and corresponding almost symplectic structures and encoded into the zero-degree cohomology coefficient for a quantum model of Einstein manifolds.
description: latex2e, 11pt, 34 pages, v3 accepted to J. Geom. Phys. 60 (2010)
Structural relaxation due to electronic correlations in the paramagnetic insulator KCuF3
Creators: name: Leonov, I.
name: Binggeli, N.
name: Korotin, Dm.
name: Anisimov, V. I.
name: Stojic, N.
name: Vollhardt, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A computational scheme for the investigation of complex materials with strongly interacting electrons is formulated which is able to treat atomic displacements, and hence structural relaxation, caused by electronic correlations. It combines ab initio band structure and dynamical mean-field theory and is implemented in terms of plane-wave pseudopotentials. The equilibrium Jahn-Teller distortion and antiferro-orbital order found for paramagnetic KCuF3 agree well with experiment.
description: 4 pages, 3 figures
Quantum Teleportation between Remote Qubit Memories with Only a Single Photon as a Resource
Creators: name: Langenfeld, Stefan
name: Welte, Stephan
name: Hartung, Lukas
name: Daiss, Severin
name: Thomas, Philip
name: Morin, Olivier
name: Distante, Emanuele
name: Rempe, Gerhard
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum teleportation enables the deterministic exchange of qubits via lossy channels. While it is commonly believed that unconditional teleportation requires a preshared entangled qubit pair, here we demonstrate a protocol that is in principle unconditional and requires only a single photon as an ex-ante prepared resource. The photon successively interacts, first, with the receiver and then with the sender qubit memory. Its detection, followed by classical communication, heralds a successful teleportation. We teleport six mutually unbiased qubit states with average fidelity $\overline{\text{F}}=(88.3\pm1.3)\%$ at a rate of $6\,\mathrm{Hz}$ over $60\,\mathrm{m}$.
Testing gravitational waveform models using angular momentum
Creators: name: Khera, Neev
name: Ashtekar, Abhay
name: Krishnan, Badri
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The anticipated enhancements in detector sensitivity and the corresponding increase in the number of gravitational wave detections will make it possible to estimate parameters of compact binaries with greater accuracy assuming general relativity(GR), and also to carry out sharper tests of GR itself. Crucial to these procedures are accurate gravitational waveform models. The systematic errors of the models must stay below statistical errors to prevent biases in parameter estimation and to carry out meaningful tests of GR. Comparisons of the models against numerical relativity (NR) waveforms provide an excellent measure of systematic errors. A complementary approach is to use balance laws provided by Einstein's equations to measure faithfulness of a candidate waveform against exact GR. Each balance law focuses on a physical observable and measures the accuracy of the candidate waveform vis a vis that observable. Therefore, this analysis can provide new physical insights into sources of errors. In this paper we focus on the angular momentum balance law, using post-Newtonian theory to calculate the initial angular momentum, surrogate fits to obtain the remnant spin and waveforms from models to calculate the flux. The consistency check provided by the angular momentum balance law brings out the marked improvement in the passage from \texttt{IMRPhenomPv2} to \texttt{IMRPhenomXPHM} and from \texttt{SEOBNRv3} to \texttt{SEOBNRv4PHM} and shows that the most recent versions agree quite well with exact GR. For precessing systems, on the other hand, we find that there is room for further improvement, especially for the Phenom models.
description: 12 pages, 6 figures. Appendix B added to provide heat maps showing the degree of violation of the angular momentum balance law in various non-precessing and precessing models, as functions of the binary parameters
Caloric Micro-cooling: Numerical modelling and parametric investigation
Creators: name: Kalizan, Jan
name: Tušek, Jaka
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Cooling systems based on the caloric effects of ferroic materials show high potential for various cooling and heat-pumping applications due to their potentially high efficiencies and the lack of any environmentally hazardous refrigerants. One of such applications that has recently gained the attention of the scientific community is micro-cooling, which can be applied for hot-spot cooling and thermal management in electronic components. In this study a comprehensive numerical analysis of a caloric micro-cooling system using elastocaloric and electrocaloric materials was performed in order to investigate the limits and potential of this technology. We demonstrated that a caloric micro-cooling system is able to cool down the electronic component below room temperature or at least stabilize it at lower temperatures compared to the case when only the heat sink is applied in an efficient way (with the COP values exceeding 10). The specific cooling capacity of the caloric micro-cooling device strongly depends on the heat sink accompanied with the caloric material and its heat transfer capabilities. The caloric device can cool the electronic component below room temperature at heat-flux densities of up to 0.35 W/cm2 and up to 1 W/cm2 if it is used together with air-cooled heat sinks and water-cooled heat sinks, respectively. Caloric cooling systems could therefore play an important role as an efficient micro-cooling technology for certain applications, in particular where under-cooling below room temperature (low-temperature electronics) is required.
description: 37 pages, 9 figures
Quantum networks based on color centers in diamond
Creators: name: Ruf, Maximilian
name: Wan, Noel H.
name: Choi, Hyeongrak
name: Englund, Dirk
name: Hanson, Ronald
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: With the ability to transfer and process quantum information, large-scale quantum networks will enable a suite of fundamentally new applications, from quantum communications to distributed sensing, metrology, and computing. This perspective reviews requirements for quantum network nodes and color centers in diamond as suitable node candidates. We give a brief overview of state-of-the-art quantum network experiments employing color centers in diamond, and discuss future research directions, focusing in particular on the control and coherence of qubits that distribute and store entangled states, and on efficient spin-photon interfaces. We discuss a route towards large-scale integrated devices combining color centers in diamond with other photonic materials and give an outlook towards realistic future quantum network protocol implementations and applications.
description: This is the draft text of an invited perspective article. We appreciate comments and suggestions to improve the work
Arheološka istraživanja između Dunava i Tamiša: Pančevački rit u multidisciplinarnom svetlu
Creators: name: Penezić, Kristina
name: Bulatović, Jelena
name: Filipović, Dragana
name: Ignjatović, Miloš
Publisher: name: Zenodo
Year: 2019

description: Oblast od oko 400 kvadratnih kilometara između današnje pozicije Dunava i starih i novog toka Tamiša u blizini Beograda je do sredine prošlog veka bila mozaik močvara i suvog terena koji je često plavljen. Pre nekoliko decenija, rekognosciranja ovog predela su dokumentovala postojanje tragova oko tridesetak lokaliteta razbacanih po celom području, iz različitih praistorijskih i istorijskih perioda. Ovo je ukazalo da je uprkos čestom plavljenju, ova oblast bila atraktivna za ljudsku upotrebu, a moguće i naseljavanje i to hiljadama godina pre savremenih drenaža terena.

U proteklih nekoliko godina je sprovedena multidisciplinarna studija sa ciljem evaluacije potencijala ovog predela kao mesta trajnog naseljavanja. U prvoj fazi istraživanja je obavljeno rekognociranje, ispitivanje satelitskih i aerosnimaka, geomagnetna snimanja i geoarheološka bušenja. Ovi rezultati su poslužili za drugu fazu terenskih istraživanja koja su uključivala iskopavanje sondi, prikupljanje materijala i analizu arheobotaničkih i zooarheoloških nalaza. Na ovaj način, došlo se do saznanja o nastanjivanju ovog predela u prošlosti, u hidrološki bogatom i dinamičnom okruženju.
ความรู้และพฤติกรรมของพยาบาลวิชาชีพในการดูแลผู้ป่วยเพื่อความปลอดภัยผู้ป่วยตามตัวชี้วัด SIMPLE โรงพยาบาลพระนั่งเกล้า จังหวัดนนทบุรี
Creators: name: ศศิมา ทองทิพย์,ระพีพรรณ  ฉลองสุข
Publisher: name: คณะเภสัชศาสตร์ ม.ศิลปากร/โรงพิมพ์ ม.ศิลปากร
Year: 2014
Subjects: ความปลอดภัยของผู้ป่วย, การพยาบาล, ตัวบ่งชี้ SIMPLE , patient safety, nursing, SIMPLE indication

description: (June-December 2014), 9, ไทยไภษัชยนิพนธ์ Thai Bulletin of Pharmaceutical Science (TBPS)
title: “looked at me like I was wild s”: The Mediation of Settler-Colonial Visuality in Jordan Abel’s Injun
Creators: name: Sieben, Alois
Publisher: name: Electronic Book Review
Year: 2021

description: Alois Sieben investigates how Jordan Abel’s Injun experiments—poetically, visually, digitally—with an anxiety-provoking limit to the settler-colonial gaze, rather than feeding this gaze a new representation of Indigeneity. Abel’s work is positioned within David Garneau’s history of Indigenous screen objects, in which something is held back from the settler-colonial gaze, a form of deprivation that exposes the blind hunger of this gaze, turning it back upon itself.
BioExcel Webinar #58: CHARMM Force Field Development History, Features, and Implementation in GROMACS
Creators: name: Lemkul, Justin
Publisher: name: Zenodo
Year: 2021
Subjects: webinar

description: The CHARMM force field is one of the most widely used atomistic force fields in biomolecular simulation. Currently, the force field covers proteins, nucleic acids, lipids, carbohydrates, ions, small molecules, and a wide range of modified (noncanonical) residues within each of these categories. Augmenting the core CHARMM force field is the CHARMM General Force Field (CGenFF), which can be applied to nonstandard species, most often ligands and drug-like molecules. In this webinar, the functional form and parametrization strategy of the CHARMM force field will be presented along with key features that can be exploited for simulations of complex systems. Other topics include the implementation of the force field in the GROMACS simulation software and details on how users can convert CGenFF-generated topologies into GROMACS format for use in simulations.
Constructions of q-Ary Constant-Weight Codes
Creators: name: Chee, Yeow Meng
name: Ling, San
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper introduces a new combinatorial construction for q-ary constant-weight codes which yields several families of optimal codes and asymptotically optimal codes. The construction reveals intimate connection between q-ary constant-weight codes and sets of pairwise disjoint combinatorial designs of various types.
description: 12 pages
Notfallbegleitung für Muslime oder mit Muslimen?
Creators: name: Karahan, Engin
Publisher: name: Zenodo
Year: 2011
Subjects: Islam in Europa
Muslims in Germany
Wohlfahrt
Religious Welfare

description: Die muslimische Gemeinschaft steht vor dem Problem, dass bewährte Mechanismen unter den veränderten Voraussetzungen sehr schnell weggefallen sind. Sie sind so schnell weggebrochen, dass eine gesunde Umwandlung kaum möglich erscheint. Das städtische Milieu hat zwangsläufig viel Gewohntes und Bewährtes aus dem Blick geraten lassen - den meisten ist dieser Wandel aber nicht einmal bewusst geworden.
Anthurium (sect. Pachyneurium)
Creators: name: Camelo, Mel C.
name: Temponi, Lívia G.
name: Coelho, Marcus A. N.
name: Baumgratz, José F. A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Alismatales
Araceae
Anthurium

description: Anthurium sect. Pachyneurium
from the Brazilian Atlantic Forest Domain: distribution and vegetation types
Most Brazilian species of Pachyneurium section occurs in the Amazon Domain, which is thus the main center of diversity (Croat 1991). In the Atlantic Forest Domain, there are seven species reported (Fig. 2)— A. affine Schott (1855: 82), A. leonii, A. paraguayense Engler (1898: 361), A. plowmanii Croat (1987: 811), A. pluricarinatum, A. santaritense Nadruz & Croat (2005: 28) and A. solitarium Schott (1860: 478) that can be identified by sets of distinctive morphological characteristics of the leaves, inflorescences, pollen grains, fruits, and seeds, as presented in the key and Figs. 3–8.
Most of the species mentioned above are endemic of Brazil, except for A. paraguayense and A. plowmanii due it occurs in Bolivia, Paraguay, and Argentina (Croat 1991). Indeed, most of the species here studied of A. sect. Pachyneurium are also endemic to the Atlantic Forest, except three: Anthurium affine (that occurs in Atlantic Forest, and can be found in Caatinga and Cerrado Domains; Coelho et al. 2020), A. paraguayense (that occurs in transition of Atlantic Forest/ Cerrado and Pantanal Domains; Croat 1991), and A. plowmanii (that occurs in Atlantic Forest/ Cerrado, Pantanal and Amazon Domains; Croat 1991).
Species distribution of Anthurium sect. Pachyneurium from Brazil is shown in Fig. 2 and Table 1. Anthurium pluricarinatum increases to three the number of species found in the Brazilian Northeast Region, since previously only A. affine and A. solitarium were known from there. Furthermore, the species found can be distinguished by foliar and reproductive characteristics (Table 2).
Even though the Brazilian Atlantic Forest Forest Domain is threatened, new species such as A. pluricarinatum continue to be described, warranting urgent efforts for the conservation of this phytogeographic domain. These actions must be associated with initiatives to describe the biodiversity and the ecological interactions between species in the Restinga environment.
description: Published as part of Camelo, Mel C., Temponi, Lívia G., Coelho, Marcus A. N. & Baumgratz, José F. A., 2023, Taxonomic updates in Anthurium sect. Pachyneurium (Araceae) from the Brazilian Atlantic Forest, pp. 109-125 in Phytotaxa 599 (2) on pages 114-123, DOI: 10.11646/phytotaxa.599.2.3, http://zenodo.org/record/8008955
ผลของกระบวนการทำการประสานรายการยาในการป้องกันความคลาดเคลื่อนทางยา ณ โรงพยาบาลมะการักษ์
Creators: name: รุ่งทิวา เลาหเธียรประธาน,วินิดา ศรีกุศุลานุกุล
Publisher: name: คณะเภสัชศาสตร์ ม.ศิลปากร/โรงพิมพ์ ม.ศิลปากร
Year: 2014
Subjects: ความคลาดเคลื่อนทางยา, การประสานรายการยา, ยาโรคเรื้อรัง,medication reconciliation, medication errors, chronic diseases medication

description: (June-December 2014), 9, ไทยไภษัชยนิพนธ์ Thai Bulletin of Pharmaceutical Science (TBPS)
A First-Order Non-Homogeneous Markov Model for the Response of Spiking Neurons Stimulated by Small Phase-Continuous Signals
Creators: name: Tapson, J.
name: Jin, C.
name: van Schaik, A.
name: Etienne-Cummings, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: We present a first-order non-homogeneous Markov model for the interspike-interval density of a continuously stimulated spiking neuron. The model allows the conditional interspike-interval density and the stationary interspike-interval density to be expressed as products of two separate functions, one of which describes only the neuron characteristics, and the other of which describes only the signal characteristics. This allows the use of this model to predict the response when the underlying neuron model is not known or well determined. The approximation shows particularly clearly that signal autocorrelations and cross-correlations arise as natural features of the interspike-interval density, and are particularly clear for small signals and moderate noise. We show that this model simplifies the design of spiking neuron cross-correlation systems, and describe a four-neuron mutual inhibition network that generates a cross-correlation output for two input signals.
description: Accepted for publication in Neural Computation
Concentration phenomena for fractional magnetic NLS equations
Creators: name: Ambrosio, Vincenzo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study the multiplicity and concentration of complex valued solutions for a fractional magnetic Schrödinger equation involving a scalar continuous electric potential satisfying a local condition and a continuous nonlinearity with subcritical growth. The main results are obtained by applying a penalization technique, generalized Nehari manifold method and Ljusternik-Schnirelman theory. We also prove a Kato's inequality for the fractional magnetic Laplacian which we believe to be useful in the study of other fractional magnetic problems.
description: arXiv admin note: text overlap with arXiv:2003.06155
Exact beta function from the holographic loop equation of large-N QCD_4
Creators: name: Bochicchio, Marco
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct and study a previously defined quantum holographic effective action whose critical equation implies the holographic loop equation of large-N QCD_4 for planar self-avoiding loops in a certain regularization scheme. We extract from the effective action the exact beta function in the given scheme. For the Wilsonean coupling constant the beta function is exacly one loop and the first coefficient agrees with its value in perturbation theory. For the canonical coupling constant the exact beta function has a NSVZ form and the first two coefficients agree with their value in perturbation theory.
description: 42 pages, latex. The exponent of the Vandermonde determinant in the quantum effective action has been changed, because it has been employed a holomorphic rather than a hermitean resolution of identity in the functional integral. Beta function unchanged. New explanations and references added, typos corrected
Curriculum Studies: Advances and Challenges in the Internationalization Process
Creators: name: Moreira, Antonio Flavio Barbosa
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2009

description: At the present moment in the XXI century, the curriculum field is experiencing a process of internationalization, of which the first signs are being felt ( Pinar, 2004, 2006b ). Transnational spaces were created, where academics from different places seek to participate in the refitting and decentralizing of their own knowledge traditions, and also to negotiate a reciprocal trust indispensable for collective work. The internationalization of a field, that is so deeply affected by distinct national cultures, has demanded new languages and new audiences which can create new narratives.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 5 No 2 (2009)
Generation of finite wave trains in excitable media
Creators: name: Yochelis, Arik
name: Knobloch, Edgar
name: Xie, Yuanfang
name: Qu, Zhilin
name: Garfinkel, Alan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Spatiotemporal control of excitable media is of paramount importance in the development of new applications, ranging from biology to physics. To this end we identify and describe a qualitative property of excitable media that enables us to generate a sequence of traveling pulses of any desired length, using a one-time initial stimulus. The wave trains are produced by a transient pacemaker generated by a one-time suitably tailored spatially localized finite amplitude stimulus, and belong to a family of fast pulse trains. A second family, of slow pulse trains, is also present. The latter are created through a clumping instability of a traveling wave state (in an excitable regime) and are inaccessible to single localized stimuli of the type we use. The results indicate that the presence of a large multiplicity of stable, accessible, multi-pulse states is a general property of simple models of excitable media.
description: 6 pages, 6 figures
Randomized benchmarking for non-Markovian noise
Creators: name: Figueroa-Romero, Pedro
name: Modi, Kavan
name: Stace, Thomas M.
name: Hsieh, Min-Hsiu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Estimating the features of noise is the first step in a chain of protocols that will someday lead to fault tolerant quantum computers. The randomized benchmarking (RB) protocol is designed with this exact mindset, estimating the average strength of noise in a quantum processor with relative ease in practice. However, RB, along with most other benchmarking and characterization methods, is limited in scope because it assumes that the noise is temporally uncorrelated (Markovian), which is increasingly evident not to be the case. Here, we combine the RB protocol with a recent framework describing non-Markovian quantum phenomena to derive a general analytical expression of the average sequence fidelity (ASF) for non-Markovian RB with the Clifford group. We show that one can identify non-Markovian features of the noise directly from the ASF through its deviations from the Markovian case, proposing a set of methods to collectively estimate these deviations, non-Markovian memory time-scales, and diagnose (in)coherence of non-Markovian noise in an RB experiment. Finally, we demonstrate the efficacy of our proposal by means of several proof-of-principle examples. Our methods are directly implementable and pave the pathway to better understanding correlated noise in quantum processors.
description: Published version, results unchanged. 11 + 16 pages, 14 figures
Understanding the Connections Between Double Bind Thinking and the Ecological Crises: Implications for Educational Reform
Creators: name: Bowers, C. A.
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2010

description: The 2007 and 2009 conferences of the American Educational Research Association (AERA) was especially notable, but for the wrong reasons. They were attended by over 12000 educators from around the world, and it took place well after scientific journals, the public media, and Al Gore’s film “An Inconvenient Truth” had contributed to a profound shift in the public’s awareness that the world is facing an ecological tipping point that will alter life on this planet. In America, which lags behind the level of ecological awareness of many European countries, public opinion has recently shifted, with surveys indicating that 70 percent of people now think that the ecological crises is a major concern that needs to be addressed. Reports on global warming, as well as on changes in the chemistry of the world’s oceans, and the spread of extreme weather patterns, were headline news in the newspapers, on television, and on talk radio. Even evangelical Christian groups were announcing that the ecological crises were a sign that they were failing as stewards of God’s creation.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 6 No 1 (2010)
Are Advanced Potentials Anomalous?
Creators: name: Ibison, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Advanced electromagnetic potentials are indigenous to the classical Maxwell theory. Generally however they are deemed undesirable and are forcibly excluded, destroying the theory's inherent time-symmetry. We investigate the reason for this, pointing out that it is not necessary and in some cases is counter-productive. We then focus on the direct-action theory in which the advanced and retarded contributions are present symmetrically, with no opportunity to supplement the particular integral solution of the wave equation with an arbitrary complementary function. One then requires a plausible explanation for the observed broken symmetry that, commonly, is understood cannot be met by the Wheeler-Feynman mechanism because the necessary boundary condition cannot be satisfied in acceptable cosmologies. We take this opportunity to argue that the boundary condition is already met by all expanding cosmologies simply as a result of cosmological red-shift. A consequence is that the cosmological and thermodynamic arrows of time can be equated, the direct action version of EM is preferred, and that advanced potentials are ubiquitous.
Domain Growth and Aging in the Random Field XY Model: A Monte Carlo Study
Creators: name: Agrawal, Ramgopal
name: Kumar, Manoj
name: Puri, Sanjay
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use large-scale Monte Carlo simulations to obtain comprehensive results for domain growth and aging in the random field XY model in dimensions $d=2,3$. After a deep quench from the paramagnetic phase, the system orders locally via annihilation of topological defects, i.e., vortices and anti-vortices. The evolution morphology of the system is characterized by the correlation function and the structure factor of the magnetization field. We find that these quantities obey dynamical scaling, and their scaling function is independent of the disorder strength $Δ$. However, the scaling form of the autocorrelation function is found to be dependent on $Δ$, i.e., superuniversality is violated. The large-$t$ behavior of the autocorrelation function is explored by studying aging and autocorrelation exponents. We also investigate the characteristic growth law $L(t,Δ)$ in $d=2,3$, which shows an asymptotic logarithmic behavior: $L(t,Δ) \sim Δ^{-φ} (\ln t)^{1/ψ}$, with exponents $φ, ψ> 0$.
Selection of rice (Oryza sativa L.) for higher yield and quality from crosses between tropical japonica and indica
Creators: name: Nongyao Kaewwiset
name: Prapa Sripichitt
name: Tanee Sreewongchai
name: Supaporn Junbuathong
Publisher: name: Genetics Society of Thailand
Year: 2010
Subjects: tropical japonica rice, indica rice, pedigreeselection, new plant type

description: 1, 3, Thai Journal of Genetics
Circular law for non-central random matrices
Creators: name: Chafai, Djalil
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Let $(X_{jk})_{j,k\geq 1}$ be an infinite array of i.i.d. complex random variables, with mean 0 and variance 1. Let $\la_{n,1},...,\la_{n,n}$ be the eigenvalues of $(\frac{1}{\sqrt{n}}X_{jk})_{1\leq j,k\leq n}$. The strong circular law theorem states that with probability one, the empirical spectral distribution $\frac{1}{n}(\de_{\la_{n,1}}+...+\de_{\la_{n,n}})$ converges weakly as $n\to\infty$ to the uniform law over the unit disc $\{z\in\dC;|z|\leq1\}$. In this short note, we provide an elementary argument that allows to add a deterministic matrix $M$ to $(X_{jk})_{1\leq j,k\leq n}$ provided that $\mathrm{Tr}(MM^*)=O(n^2)$ and $\mathrm{rank}(M)=O(n^\al)$ with $\al<1$. Conveniently, the argument is similar to the one used for the non-central version of Wigner's and Marchenko-Pastur theorems.
description: accepted in Journal of Theoretical Probability
Alloxysta Forster 1869
Creators: name: Ferrer-Suay, Mar
name: Pujade-Villar, Juli
name: Selfa, Jesús
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Figitidae
Alloxysta

description: Alloxysta Förster, 1869
Within the genus Alloxysta, 172 species have been described, of which 111 species were considered valid (Ferrer-Suay et al. 2012a). Subsequently only 65 of these species were considered to be valid and 40 new species have been described Ferrer-Suay et al. (2012a, b, c, d; 2013a, b, c, d, e; 2014a, b; 2015) resulting in a total of 105 Alloxysta valid species. All of the currently recognised Alloxysta species have been described and re-described as part of the various revisions carried out by Ferrer-Suay et al. (2012a, b, c, d; 2013a, b, c, d, e; 2014a, b; 2015) and the data are available at www.charipinaedatabase.com. We provide an overview of the current status of all Alloxysta species in Table 2.
description: Published as part of Ferrer-Suay, Mar, Pujade-Villar, Juli & Selfa, Jesús, 2023, Overview of the current status of Charipinae (Hymenoptera, Cynipoidea, Figitidae): taxonomy, distribution, and diversity, pp. 1-39 in Zootaxa 5339 (1) on page 4, DOI: 10.11646/zootaxa.5339.1.1, http://zenodo.org/record/8290238
Isocurvature, non-gaussianity and the curvaton model
Creators: name: Beltrán, Maria
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent analyses of the statistical distribution of the temperature anisotropies in the CMB do not rule out the possibility that there is a large non-gaussian contribution to the primordial power spectrum. This fact motivates the re-analysis of the curvaton scenario, paying special attention to the compatibility of large non-gaussianity of the local type with the current detection limits on the isocurvature amplitude in the CMB. We find that if the curvaton mechanism generates a primordial power spectrum with an important non-gaussian component, any residual isocurvature imprint originated by the curvaton, would have an amplitude too big to be compatible with the current bounds. This implies that the isocurvature mode should be equal to zero in this scenario and we explore the consequences of this inference. In order to prevent the generation of a such a signal, the CDM must be created at a late stage, after the curvaton decays completely. This requirement is used to constrain the nature of the CDM in this scenario, arriving at a general relation between the temperature of the universe at CDM creation and the scale of inflation.
description: 9 pages, 2 figures
Experimental investigation of some conducting crossed gratings
Creators: name: Cai, Li-He
Publisher: name: University of British Columbia
Year: 2010

description: The properties of a crossed grating of square pyramids and a crossed grating with hemispherical cavities to eliminate specular reflection from a conducting surface are studied experimentally. Measurements were made in the microwave range of 35 GHz. The best performance is that 99.94% of the power of a TM-polarized incident wave can be scattered into a single spectral order by a pyramidal crossed grating, while for TE polarization the reduction in specular reflection can be as high as 98%. Anti-reflection properties of a crossed grating with hemispherical cavities near normal incidence are also observed. Comparison between the behavior of triangular and pyramidal gratings of the same profile is made. Effects of the profile parameters are investigated. Basically the experimental results agree with the theoretical predictions. This investigation provides a set of experimental data to assist further numerical study.
Dynamical Friction of a Circular-Orbit Perturber in a Gaseous Medium
Creators: name: Kim, Hyosun
name: Kim, Woong-Tae
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the gravitational wake due to, and dynamical friction on, a perturber moving on a circular orbit in a uniform gaseous medium using a semi-analytic method. This work is a straightforward extension of Ostriker (1999) who studied the case of a straight-line trajectory. The circular orbit causes the bending of the wake in the background medium along the orbit, forming a long trailing tail. The wake distribution is thus asymmetric, giving rise to the drag forces in both opposite (azimuthal) and lateral (radial) directions to the motion of the perturber, although the latter does not contribute to orbital decay much. For subsonic motion, the density wake with a weak tail is simply a curved version of that in Ostriker and does not exhibit the front-back symmetry. The resulting drag force in the opposite direction is remarkably similar to the finite-time, linear-trajectory counterpart. On the other hand, a supersonic perturber is able to overtake its own wake, possibly multiple times, and develops a very pronounced tail. The supersonic tail surrounds the perturber in a trailing spiral fashion, enhancing the perturbed density at the back as well as far front of the perturber. We provide the fitting formulae for the drag forces as functions of the Mach number, whose azimuthal part is surprisingly in good agreement with the Ostriker's formula, provided Vp t=2 Rp, where Vp and Rp are the velocity and orbital radius of the perturber, respectively.
description: 28 pages, 9 figures, accepted for publication in Astrophysical Journal
A View From Clark Butte
Creators: name: Shepard, Florence Krall
Publisher: name: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS)
Year: 2010

description: Clark Butte, Hoback Basin, Greater Yellowstone Bioregion, Middle Rockies, Wyoming, USA, North America, Earth. These descriptors fix my location on Earth, my terra munde, a particular place that grounds my being but is not mine alone. Rising up out of United States Forest Service land, it is public domain, joining in common all species that live in or pass through its environs.

The hike to its summit at 8000 feet elevation, about 1000 feet above the basin floor, is more than a cardio-vascular workout, although it surely is that. It is a review of the diverse vegetative communities from sagebrush steppe to spruce/fir forest: the red bloom of wild onion and delicate ivory sego lily cups of spring, the papery sheen of dry pods in autumn. Here I meet the “Others,” prey and predators maintaining a delicate balance: dragonflies and mosquitoes, eagles and ground squirrels, coyotes and antelope. The latter are always in sight from birth to rut when they start their migration to winter in the Green River Basin. On the summit as I catch my breath, I enjoy the view and spend a moment in contemplation.
description: Journal of the American Association for the Advancement of Curriculum Studies (JAAACS), Vol 6 No 1 (2010)
A Case against a Significant Detection of Precession in the Galactic Warp
Creators: name: Chrobáková, Žofia
name: López-Corredoira, Martín
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent studies of warp kinematics using Gaia DR2 data have produced detections of warp precession for the first time, which greatly exceeds theoretical predictions of models. However, this detection assumes a warp model derived for a young population (few tens of megayears) to fit velocities of an average older stellar population of the thin disk (several gigayears) in Gaia-DR2 observations, which may lead to unaccounted systematic errors. Here, we recalculate the warp precession with the same approach and Gaia DR2 kinematic data, but using different warp parameters based on the fit of star counts of the Gaia DR2 sample, which has a much lower warp amplitude than the young population. When we take into account this variation of the warp amplitude with the age of the population, we find that there is no need for precession. We find the value of warp precession $β= 4^{+6}_{-4}$ km s$^{-1}$ kpc$^{-1}$, which does not exclude nonprecessing warp.
description: 12 pages, 8 figures, accepted to be published in ApJ
Phaenoglyphis Forster 1869
Creators: name: Ferrer-Suay, Mar
name: Pujade-Villar, Juli
name: Selfa, Jesús
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Figitidae
Phaenoglyphis

description: Phaenoglyphis Förster, 1869
Thirty-one Phaenoglyphis species were considered valid according to the Charipinae catalogue (Ferrer-Suay et al. 2012a) (Table 5). However, examination of the type material revealed that only 24 species are currently valid (Ferrer-Suay et al. 2018b) and 11 Phaenoglyphis species were subsequently described (Table 7). A complete overview of the species status for this genus is provided in Table 8.
The monospecific genera (Dilapothor, Lobopterocharips, Lytoxysta, and † Protocharips) have not changed in species numbers since the production of the first Charipinae catalogue (Ferrer-Suay et al. 2012a).
Most of the Alloxysta and Phaenoglyphis type material has been located and studied, the outstanding types that have not been seen are presumed to be lost (Ferrer-Suay et al. in prep). 65 Alloxysta and 24 Phaenoglyphis species described by earlier authors are still considered as valid species. In total 55 new Charipinae species have been described in modern day revisions: 40 Alloxysta, 3 Apocharips, 1 Dilyta, and 11 Phaenoglyphis. All the valid species were completely described and illustrated by Ferrer-Suay et al. (2011; 2012e, f, g; 2013f, g, h, i, j;2014c, d; 2015b, c; 2016; 2018b) and their detailed taxonomic information and photographs are also available at www. charipinaedatabase.com
description: Published as part of Ferrer-Suay, Mar, Pujade-Villar, Juli & Selfa, Jesús, 2023, Overview of the current status of Charipinae (Hymenoptera, Cynipoidea, Figitidae): taxonomy, distribution, and diversity, pp. 1-39 in Zootaxa 5339 (1) on page 9, DOI: 10.11646/zootaxa.5339.1.1, http://zenodo.org/record/8290238
Cosmological Parameter Estimation and Inference using Deep Summaries
Creators: name: Fluri, Janis
name: Lucchi, Aurelien
name: Kacprzak, Tomasz
name: Refregier, Alexandre
name: Hofmann, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The ability to obtain reliable point estimates of model parameters is of crucial importance in many fields of physics. This is often a difficult task given that the observed data can have a very high number of dimensions. In order to address this problem, we propose a novel approach to construct parameter estimators with a quantifiable bias using an order expansion of highly compressed deep summary statistics of the observed data. These summary statistics are learned automatically using an information maximising loss. Given an observation, we further show how one can use the constructed estimators to obtain approximate Bayes computation (ABC) posterior estimates and their corresponding uncertainties that can be used for parameter inference using Gaussian process regression even if the likelihood is not tractable. We validate our method with an application to the problem of cosmological parameter inference of weak lensing mass maps. We show in that case that the constructed estimators are unbiased and have an almost optimal variance, while the posterior distribution obtained with the Gaussian process regression is close to the true posterior and performs better or equally well than comparable methods.
description: 18 pages, 10 figures
Hybrid Quantum Gowdy Cosmology: Combining Loop and Fock Quantizations
Creators: name: Martin-Benito, Mercedes
name: Garay, Luis J.
name: Marugan, Guillermo A. Mena
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We quantize an inhomogeneous cosmological model using techniques that include polymeric quantization. More explicitly, we construct well defined operators to represent the constraints and find the physical Hilbert space formed by their solutions, which reproduces the conventional Fock quantization for the inhomogeneities. The initial singularity is resolved in this inhomogeneous model in an extremely simple way and without imposing special boundary conditions, thus ensuring the robustness and generality of this resolution. Furthermore this quantization constitutes a well founded step towards the extraction of physical results and consequences from loop quantum cosmology, given the central role of the inhomogeneities in modern cosmology.
description: 5 pages; version accepted for publication in Physical Review D
A variational quantum eigensolver for dynamic correlation functions
Creators: name: Chen, Hongxiang
name: Nusspickel, Max
name: Tilly, Jules
name: Booth, George H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Recent practical approaches for the use of current generation noisy quantum devices in the simulation of quantum many-body problems have been dominated by the use of a variational quantum eigensolver (VQE). These coupled quantum-classical algorithms leverage the ability to perform many repeated measurements to avoid the currently prohibitive gate depths often required for exact quantum algorithms, with the restriction of a parameterized circuit to describe the states of interest. In this work, we show how the calculation of zero-temperature dynamic correlation functions defining the linear response characteristics of quantum systems can also be recast into a modified VQE algorithm, which can be incorporated into the current variational quantum infrastructure. This allows for these important physical expectation values describing the dynamics of the system to be directly converged on the frequency axis, and they approach exactness over all frequencies as the flexibility of the parameterization increases. The frequency resolution hence does not explicitly scale with gate depth, which is approximately twice as deep as a ground state VQE. We apply the method to compute the single-particle Green's function of ab initio dihydrogen and lithium hydride molecules, and demonstrate the use of a practical active space embedding approach to extend to larger systems. While currently limited by the fidelity of two-qubit gates, whose number is increased compared to the ground state algorithm on current devices, we believe the approach shows potential for the extraction of frequency dynamics of correlated systems on near-term quantum processors.
description: 13 pages, 4 figures. Added new citations
Technical: Equivalent Circuit Modeling and Analysis of Metamaterial Based Wireless Power Transfer
Creators: Webster Adepoju
Indranil Bhattacharya
Ismail Fidan
Nasr Esfahani Ebrahim
Olatunji Abiodun
Ranger Buchanan
Trapa Banik
Muhammad Enagi Bima
Publisher: name: IEEE
Year: 2022

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