cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A study of the neglected Galactic HII region NGC 2579 and its companion ESO 370-9
Creators: name: Copetti, M. V. F.
name: Oliveira, V. A.
name: Riffel, R.
name: Castañeda, H. O.
name: Sanmartim, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Galactic HII region NGC 2579 has stayed undeservedly unexplored due to identification problems which persisted until recently. Both NGC 2579 and its companion ESO 370-9 have been misclassified as planetary or reflection nebula, confused with each other and with other objects. Due to its high surface brightness, high excitation, angular size of few arcminutes and relatively low interstellar extinction, NGC 2579 is an ideal object for investigations in the optical range. Located in the outer Galaxy, NGC 2579 is an excellent object for studying the Galactic chemical abundance gradients. In this paper we present the first comprehensive observational study on the nebular and stellar properties of NGC 2579 and ESO 370-9, including the determination of electron temperature, density structure, chemical composition, kinematics, distance, and the identification and spectral classification of the ionizing stars, and discuss the nature of ESO 370-9. Long slit spectrophotometric data in the optical range were used to derive the nebular electron temperature, density and chemical abundances and for the spectral classification of the ionizing star candidates. Halpha and UBV CCD photometry was carried out to derive stellar distances from spectroscopic parallax and to measure the ionizing photon flux.
description: To be published in Astronomy & Astrophysics
Adiabatic passage in a three-state system with non-Markovian relaxation: The role of excited-state absorption and two-exciton processes
Creators: name: Fainberg, B. D.
name: Gorbunov, V. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The influence of excited-state absorption (ESA) and two-exciton processes on a coherent population transfer with intense ultrashort chirped pulses in molecular systems in solution has been studied. An unified treatment of adiabatic rapid passage (ARP) in such systems has been developed using a three-state electronic system with relaxation treated as a diffusion on electronic potential energy surfaces. We have shown that ESA has a profound effect on coherent population transfer in large molecules that necessitates a more accurate interpretation of experimental data. A simple and physically clear model for ARP in molecules with three electronic states in solution has been developed by extending the Landau-Zener calculations putting in a third level to random crossing of levels. A method for quantum control of two-exciton states in molecular complexes has been proposed.
description: 38 pages, 7 figures; submitted to JPC
A Cavity Experiment to Search for Hidden Sector Photons
Creators: name: Jaeckel, Joerg
name: Ringwald, Andreas
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a cavity experiment to search for low mass extra U(1) gauge bosons with gauge-kinetic mixing with the ordinary photon, so-called paraphotons. The setup consists of two microwave cavities shielded from each other. In one cavity, paraphotons are produced via photon-paraphoton oscillations. The second, resonant, cavity is then driven by the paraphotons that permeate the shielding and reconvert into photons. This setup resembles the classic ``light shining through a wall'' setup. However, the high quality factors achievable for microwave cavities and the good sensitivity of microwave detectors allow for a projected sensitivity for photon-paraphoton mixing of the order of χ~10^{-12} to 10^{-8}, for paraphotons with masses in the μeV to meV range -- exceeding the current laboratory- and astrophysics-based limits by several orders of magnitude. Therefore, this experiment bears significant discovery potential for hidden sector physics.
description: 11 pages, 5 figures
Harmonic bilocal fields generated by globally conformal invariant scalar fields
Creators: name: Nikolov, Nikolay M.
name: Rehren, Karl-Henning
name: Todorov, Ivan
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The twist two contribution in the operator product expansion of phi_1(x_1) phi_2(x_2) for a pair of globally conformal invariant, scalar fields of equal scaling dimension d in four space-time dimensions is a field V_1(x_1,x_2) which is harmonic in both variables. It is demonstrated that the Huygens bilocality of V_1 can be equivalently characterized by a "single-pole property" concerning the pole structure of the (rational) correlation functions involving the product phi_1(x_1) phi_2(x_2). This property is established for the dimension d=2 of phi_1, phi_2. As an application we prove that any system of GCI scalar fields of conformal dimension 2 (in four space-time dimensions) can be presented as a (possibly infinite) superposition of products of free massless fields.
description: 29 pages. v2: corrected an argument, v4: final version as to be published in CMP
Star Formation via the Little Guy: A Bayesian Study of Ultracool Dwarf Imaging Surveys for Companions
Creators: name: Allen, Peter R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I have undertaken a comprehensive statistical investigation of the ultracool dwarf companion distribution (spectral type M6 and later). Utilizing a Bayesian algorithm, I tested models of the companion distribution against data from an extensive set of space and ground-based imaging observations of nearby ultracool dwarfs. My main conclusions are fivefold: 1) Confirm that the concentration of high mass ratio ultracool binary systems is a fundamental feature of the companion distribution, not an observational or selection bias; 2) Determine that the wide (>~20 AU) binary frequency can be no more the 1-2%; 3) Show that the decreasing binary frequency with later spectral types is a real trend; 4) Demonstrate that a large population of currently undetected low mass ratio systems are not consistent with the current data; 5) Find that the population of spectroscopic binaries must be be at least 30% that of currently known ultracool binaries. The best fit value for the overall M6 and later binary frequency is ~20%-22%, of which only ~6% consists of currently undetected companions with separations less than 1 AU. If this is correct, then the upper limit of the ultracool binary population discovered to date is ~75%. I find that the numerical simulation results of the ejection formation method are inconsistent with the outcome of this analysis. However, dynamics do seem to play an important role as simulations of small-N clusters and triple system decays produce results similar to those of this work. The observational efforts required to improve these constraints are shown to be primarily large spectroscopic binary surveys and improved high-resolution imaging techniques.
description: 42 pages, 17 figures, to be published in October 2007 ApJ
Impact of spin-zero particle-photon interactions on light polarization in external magnetic fields
Creators: name: Liao, Yi
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: If the recent PVLAS results on polarization changes of a linearly polarized laser beam passing through a magnetic field are interpreted by an axion-like particle, it is almost certain that it is not a standard QCD axion. Considering this, we study the general effective interactions of photons with spin-zero particles without restricting the latter to be a pseudo-scalar or a scalar, i.e., a parity eigenstate. At the lowest order in effective field theory, there are two dimension-5 interactions, each of which has previously been treated separately for a pseudo-scalar or a scalar particle. By following the evolution in an external magnetic field of the system of spin-zero particles and photons, we compute the changes in light polarization and the transition probability for two experimental set-ups: one-way propagation and round-trip propagation. While the first may be relevant for astrophysical sources of spin-zero particles, the second applies to laboratory optical experiments like PVLAS. In the one-way propagation, interesting phenomena can occur for special configurations of polarization where, for instance, transition occurs but light polarization does not change. For the round-trip propagation, however, the standard results of polarization changes for a pseudoscalar or a scalar are only modified by a factor that depends on the relative strength of the two interactions.
description: To appear in PLB, 10 pp, 0 figs; thanks to the anonymous referee for useful comments/suggestions. Main changes: (1)English hopefully improved. (2)The word `interference' deleted. (3)Results unchanged but discussions extended. (4)Quote Ref [26] where spin-zero particles with mixed parity appear. (5)Acknowledgements added
ผลกระทบของปรากฏการณ์เอลนีโญและลานีญาที่มีต่อปริมาณน้ำฝน อุณหภูมิ และปริมาณน้ำท่าเพื่อเป็นแนวทางการจัดการทรัพยากรน้ำส้าหรับการเกษตรอย่างยั่งยืน
Creators: name: ปิยพงษ์ ทองดีนอก
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2016
Subjects: ผลกระทบของปรากฎการณ์เอลนีโญและลานีญา
ปริมาณน้้าฝน
อุณหภูมิ,ปริมาณน้้าท่า
การจัดการน้้า
การเกษตรอย่างยั่งยืน

description: วารสารเกษตรพระวรุณ, 13, 1, ม.ค.-13
title: Foundations of Generalized State Channel Networks
Creators: name: Hostáková, Kristina
Publisher: name: UNSPECIFIED
Year: 2021

description: Since the introduction of Bitcoin in 2008, cryptocurrencies have received considerable attention; not only for their decentralized nature but also for the ability to facilitate conditional payments. For example, Ethereum supports smart contracts, which are self-executing agreements written in program code that can control coins and hence serve as building blocks for various applications. However, there are fundamental challenges in existing cryptocurrencies, one of which is scalability. As all transactions are processed and stored on a distributed ledger -- the so-called blockchain -- transaction throughput is inherently limited. An important proposal to significantly improve scalability is to utilize payment channel networks, which allow users to perform payments in an off-chain manner. We extend the functionality of payment channel networks in several directions, thereby significantly enlarge the class of applications that can be performed off-chain. Firstly, we generalize the idea of payment channels and construct state channels that allow two parties to execute multiple smart contracts in an off-chain manner. Moreover, we show that any subset of n parties in a state channel network can create a multi-party virtual state channel and execute n-party smart contracts without any blockchain interaction. We follow a modular design approach and formally define the security guarantees provided by the developed state channel framework using the Universal Composability (UC) model of Cannetti. Secondly, we focus on blockchain systems that do not support execution of smart contracts, such as Bitcoin, and construct generalized channels. Analogously to state channels, generalized channels inherit the functionality of the underlying blockchain and hence form a two-party ledger. We again utilize the UC model to formally define the achieved security guarantees. Furthermore, we demonstrate that off-chain smart contract execution over Bitcoin is possible if we additionally assume that one of the involved parties owns a trusted execution environment. Finally, we present a provably secure protocol for payment routing in a payment channel network. Our protocol allows intermediaries on the path to split the routed payment and choose the next hop for each partial payment separately. The combination of local routing and on-path splitting significantly increases the success probability of routed payments, especially when the transferred value is large.
title: NOAA Data Management Planning Procedural Directive Version 1.0
Creators: name: NOAA Environmental Data Management Committee
Publisher: name: National Oceanic and Atmospheric Administration
publisherIdentifier: https://ror.org/02z5nhe81
publisherIdentifierScheme: ROR
Year: 2011

description: NOAA Administrative Order (NAO) 212‐15, Management of Environment Data and Information, states that environmental data is to be managed based upon a lifecycle that includes developing and following a data management plan. The purpose of this procedural directive is to expand upon this requirement for Data Management Plans (DMPs), direct managers of all data production projects and systems to write data management plans, and provide detailed guidance on who should write them and how to write them. It contains a template with questions to be considered and addressed in planning all data production projects. The goal of the Data Management plan is to ensure that data are properly collected, documented, made accessible, and preserved for future use in a NOAA Data Center or other long‐term archive facility.
Change in Menstrual Pattern among Medical Undergraduate as a result of COVID-19 outbreak relatedanxiety
Creators: name: Palak Bansal
name: Chaurasia, Hemlata
name: Bansal, Tripti
name: Jatin Bansal
Publisher: name: figshare
Year: 2021
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine
subject: 111402 Obstetrics and Gynaecology
subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences
subject: 111005 Mental Health Nursing
subject: FOS: Health sciences
subject: 110319 Psychiatry (incl. Psychotherapy)
subject: 111799 Public Health and Health Services not elsewhere classified

description: Contribution to KGMU Journal of Physiology 2020. ISSN 2320-2777
การเปรียบเทียบความหลากชนิดของไม้ต้นและการใช้ประโยชน์ในท้องถิ่นระหว่างป่ายางชุมและป่าระหาร อำเภอเมืองสุรินทร์จังหวัดสุรินทร์
Creators: name: สมชญา  ศรีธรรม
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2016
Subjects: ความหลากหลายของชนิดพันธุ์
ดัชนีความสำคัญ
สมุนไพร

description: วารสารเกษตรพระวรุณ, 13, 1, 14-25
ประสิทธิภาพของเชื้อราไตรโคเดอร์มาชนิดสดในการควบคุมโรคราสนิมขาวของผักบุ้งที่เกิดจากเชื้อรา Albugo ipomoeae-aquaticae
Creators: name: ครองใจโสมรักษ์
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2016
Subjects: ผักบุ้ง
เชื้อราไตรโคเดอร์มา
โรคราสนิมขาว

description: วารสารเกษตรพระวรุณ, 13, 1, 26-33
ผลการฉีดฮอร์โมน PGF2?โคเนื้อลูกผสมฮินดูบราซิลที่ไม่แสดงอาการเป็นสัดเพื่อจัดรอบการเป็นสัดในจังหวัดมหาสารคาม
Creators: name: โสภณ ลครพล
Publisher: name: คณะเทคโนโลยีการเกษตร  มหาวิทยาลัยราชภัฏมหาสารคาม
Year: 2016
Subjects: รอบการเป็นสัด
PGF2?
คเนื้อพันธุ์ลูกผสมฮินดูบราซิล

description: วารสารเกษตรพระวรุณ, 13, 1, 34-40
title: Gletscherschmelze in den asiatischen Hochgebirgen
Creators: name: Jorzik, Oliver
Publisher: name: Deutsches GeoForschungsZentrum GFZ
Year: 2019

description: Die Gletscher in Hindukusch, Himalaya oder Karakorum sind bedeutende Eisspeicher. Sie versorgen einige der wichtigsten Flussregionen der Welt wie den Ganges, Indus, Brahmaputra, Mekong oder auch den Irrawaddy mit Wasser. Neue Forschungsergebnisse zeigen, wie sehr die Gletscher in den asiatischen Hochgebirgen gefährdet sind.
Dynamics of polarization buildup by spin filtering
Creators: name: Buttimore, N. H.
name: O'Brien, D. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There has been much recent research into polarizing an antiproton beam, instigated by the recent proposal from the PAX (Polarized Antiproton eXperiment) project at GSI Darmstadt. It plans to polarize an antiproton beam by repeated interaction with a polarized internal target in a storage ring. The method of polarization by spin filtering requires many of the beam particles to remain within the ring after scattering off the polarized internal target via electromagnetic and hadronic interactions. We present and solve sets of differential equations which describe the buildup of polarization by spin filtering in many different scenarios of interest to projects planning to produce high intensity polarized beams. These scenarios are: 1) spin filtering of a fully stored beam, 2) spin filtering while the beam is being accumulated, i.e. unpolarized particles are continuously being fed into the beam, 3) the particle input rate is equal to the rate at which particles are being lost due to scattering beyond ring acceptance angle, the beam intensity remaining constant, 4) increasing the initial polarization of a stored beam by spin filtering, 5) the input of particles into the beam is stopped after a certain amount of time, but spin filtering continues. The rate of depolarization of a stored polarized beam on passing through an electron cooler is also shown to be negligible.
description: 15 pages, references added, introduction elaborated on, some variables defined in more detail. Submitted to Eur. Phys. J. A
A simple test of quantumness for a single system
Creators: name: Alicki, Robert
name: Van Ryn, Nicholas
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a simple test of quantumness which can decide whether for the given set of accessible experimental data the classical model is insufficient. Take two observables $ A,B$ such that for any state $ψ$ their mean values satisfy $0\leq \leq \leq 1$. If there exists a state $ϕ$ such that the second moments fulfill the inequality $ >$ then the system cannot be described by the classical probabilistic scheme. An example of an optimal triple $(A,B,ϕ)$ in the case of a qubit is given.
description: 3 pages, no figures, corrected typos, text essentially amended
High p_T Top Quarks at the Large Hadron Collider
Creators: name: Baur, U.
name: Orr, L. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Many new physics models predict resonances with masses in the TeV range which decay into a pair of top quarks. With its large cross section, t\bar t production at the Large Hadron Collider (LHC) offers an excellent opportunity to search for such particles. The identification of very energetic top quarks is crucial in such an analysis. We consider in detail the t\bar t\to\ell^\pmνb\bar bq\bar q' (\ell=e, μ) final state for high p_T top quarks. In this phase space region, two or more of the final state quarks can merge into a single jet due to the large Lorentz boost of the parent top quark. As a result, a large fraction of t\bar t\to\ell^\pmνb\bar bq\bar q' events with an invariant mass in the TeV region contains less than four observable jets. Requiring one or two tagged b-quarks, we calculate the W+jets, Wb+jets, Wb\bar b+jets, Wbt, and single top plus jets backgrounds for these final states, and identify cuts which help to suppress them. In particular, we discuss whether a cut on the jet invariant mass may be useful in reducing the background in the \ellν+2 jets channel. We also investigate how next-to-leading order QCD corrections affect high p_T top quark production at the LHC. We find that the \ellν+2 jets and \ellν+3 jets final states with one or two $b$-tags will significantly improve the chances for discovering new heavy particles in the t\bar t channel at the LHC.
description: revtex 3, 39 pages, 18 figures
SPITZER: Accretion in Low Mass Stars and Brown Dwarfs in the Lambda Orionis Cluster
Creators: name: Navascues, D. Barrado y
name: Stauffer, J. R.
name: Morales-Calderon, M.
name: Bayo, A.
name: Fazzio, G.
name: Megeath, T.
name: Allen, L.
name: Hartmann, L. W.
name: Calvet, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present multi-wavelength optical and infrared photometry of 170 previously known low mass stars and brown dwarfs of the 5 Myr Collinder 69 cluster (Lambda Orionis). The new photometry supports cluster membership for most of them, with less than 15% of the previous candidates identified as probable non-members. The near infrared photometry allows us to identify stars with IR excesses, and we find that the Class II population is very large, around 25% for stars (in the spectral range M0 - M6.5) and 40% for brown dwarfs, down to 0.04 Msun, despite the fact that the H(alpha) equivalent width is low for a significant fraction of them. In addition, there are a number of substellar objects, classified as Class III, that have optically thin disks. The Class II members are distributed in an inhomogeneous way, lying preferentially in a filament running toward the south-east. The IR excesses for the Collinder 69 members range from pure Class II (flat or nearly flat spectra longward of 1 micron), to transition disks with no near-IR excess but excesses beginning within the IRAC wavelength range, to two stars with excess only detected at 24 micron. Collinder 69 thus appears to be at an age where it provides a natural laboratory for the study of primordial disks and their dissipation.
description: ApJ, in press
On the mass of the neutron star in V395 Car/2S 0921-630
Creators: name: Steeghs, D.
name: Jonker, P. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report high-resolution optical spectroscopy of the low-mass X-ray binary V395 Car/2S 0921-630 obtained with the MIKE echelle spectrograph on the Magellan-Clay telescope. Our spectra are obtained near superior conjunction of the mass donor star and we exploit the absorption lines originating from the back-side of the K-type object to accurately derive its rotational velocity. Using K0-K1 III templates, we find vsini=32.9 +/- 0.8 km/s. We show that the choice of template star and the assumed limb darkening coefficient has little impact on the derived rotational velocity. This value is a significant revision downwards compared to previously published values. We derive new system parameter constraints in the light of our much lower rotational velocity. We find M_1=1.44 +/- 0.10 Msun, M_2=0.35 +/- 0.03 Msun, and q=0.24 +/- 0.02 where the errors have been estimated through a Monte-Carlo simulation. A possible remaining systematic effect is the fact that we may be over-estimating the orbital velocity of the mass donor due to irradiation effects. However, any correction for this effect will only reduce the compact object mass further, down to a minimum mass of M_1=1.05 +/- 0.08 Msun. There is thus strong evidence that the compact object in this binary is a neutron star of rather typical mass and that the previously reported mass values of 2-4Msun were too high due to an over-estimate of the rotational broadening.
description: 4 pages, 3 figures, accepted for publication in ApJ Letters
A data-analysis driven comparison of analytic and numerical coalescing binary waveforms: nonspinning case
Creators: name: Pan, Yi
name: Buonanno, Alessandra
name: Baker, John G.
name: Centrella, Joan
name: Kelly, Bernard J.
name: McWilliams, Sean T.
name: Pretorius, Frans
name: van Meter, James R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compare waveforms obtained by numerically evolving nonspinning binary black holes to post-Newtonian (PN) template families currently used in the search for gravitational waves by ground-based detectors. We find that the time-domain 3.5PN template family, which includes the inspiral phase, has fitting factors (FFs) >= 0.96 for binary systems with total mass M = 10 ~ 20 Msun. The time-domain 3.5PN effective-one-body template family, which includes the inspiral, merger and ring-down phases, gives satisfactory signal-matching performance with FFs >= 0.96 for binary systems with total mass M = 10 ~ 120 Msun. If we introduce a cutoff frequency properly adjusted to the final black-hole ring-down frequency, we find that the frequency-domain stationary-phase-approximated template family at 3.5PN order has FFs >= 0.96 for binary systems with total mass M = 10 ~ 20 Msun. However, to obtain high matching performances for larger binary masses, we need to either extend this family to unphysical regions of the parameter space or introduce a 4PN order coefficient in the frequency-domain GW phase. Finally, we find that the phenomenological Buonanno-Chen-Vallisneri family has FFs >= 0.97 with total mass M=10 ~ 120Msun. The main analyses use the noise spectral-density of LIGO, but several tests are extended to VIRGO and advanced LIGO noise-spectral densities.
description: 19 pages, 17 figures, added references, corrected typos, changed figure 16
Quantum entanglement of decohered two-mode squeezed states in absorbing and amplifying environment
Creators: name: Poon, Phoenix S. Y.
name: Law, C. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the properties of quantum entanglement of two-mode squeezed states interacting with linear baths with general gain and loss parameters. By explicitly solving for ρfrom the master equation, we determine analytical expressions of eigenvalues and eigenvectors of ρ^{T_A} (the partial transposition of density matrix ρ). In Fock space, ρ^{T_A} is shown to maintain a block diagonal structure as the system evolves. In addition, we discover that the decoherence induced by the baths would break the degeneracy of ρ^{T_A}, and leads to a novel set of eigenvectors for the construction of entanglement witness operators. Such eigenvectors are shown to be time-independent, which is a signature of robust entanglement of two-mode squeezed states in the presence of noise.
description: 9 pages, 7 figures
Συσχέτιση πολυμορφισμών των γονιδίων bdnf και elp4 με τη ρολάνδειο επιληψία
Creators: name: Γκαμπέτα, Αναστασία Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: subject: Επιληψία
subject: Πολυμορφισμοί
subject: Γενετική
subject: Ρολάνδειος
subject: Epilepsy
subject: Olymorphisms
subject: Genetics
subject: FOS: Biological sciences
subject: Rolandic

description: Η Ρολάνδειος επιληψία θεωρείται το πιο συχνό επιληπτικό σύνδρομο της παιδικής ηλικίας. Έχουν περιγραφεί διάφορες μεταλλάξεις γονιδίων που ελέγχουν τη διεγερσιμότητα των νευρώνων. Πρόσφατες αναφορές στη συμμετοχή των γονιδίων bdnf και elp4 στην διαφοροποίηση και μετανάστευση των νευρικών κυττάρων καθιστούν τα γονίδια αυτά υποψήφια για επιληπτογόνο δράση. Στην παρούσα διατριβή μελετήθηκε η κατανομή των γονοτύπων των πολυμορφισμών των γονιδίων bdnf και elp4 σε 60 παιδιά ελληνικής καταγωγής με Ρολάνδειο επιληψία και 60 υγιή παιδιά που αποτέλεσαν την αμάδα ελέγχου. Επιπλέον, μελετήθηκε η συσχέτιση των πολυμορφισμών αυτών με συγκεκριμένα κλινικά και ηλεκτροεγκεφαλογραφικά χαρακτηριστικά της νόσου. Σύμφωνα με τα αποτελέσματα της διατριβής, δεν βρέθηκε στατιστικώς σημαντική διαφορά όσον αφορά την κατανομή των γονοτύπων των πολυμορφισμών bdnf val66met (rs6265), elp4 rs964112 και elp4 rs11031434 στην ομάδα των παιδιών με Ρολάνδειο επιληψία και την ομάδα των μαρτύρων. Επιπλέον, δεν βρέθηκε στατιστικώς σημαντική διαφορά μεταξύ των πολυμορφισμών αυτών όσον αφορά τα ευρήματα στο ηλεκτροεγκεφαλογράφημα, το είδος των επιληπτικών σπασμών και την ανταπόκριση στη χορηγούμενη αντιεπιληπτική αγωγή των παιδιών με Ρολάνδειο επιληψία. Επομένως, ο ρόλος των γονιδίων αυτών παραμένει αδιευκρίνιστος. Περαιτέρω γενετικές και νευροβιολογικές μελέτες αναμένεται να ξεκαθαρίσουν το τοπίο όσον αφορά την γενετική βάση του καλοήθους αυτού επιληπτικού συνδρόμου.
description: Rolandic epilepsy is considered to be the most common childhood epileptic syndrome. Different mutations in genes that control the excitability of neurons have been described. Recent reports on the involvement of the bdnf and elp4 genes in cell motility, migration, and adhesion make these genes candidate for Rolandic epilepsy susceptibility. Thus, we determined the distribution of bdnf and elp4 polymorphisms in 60 Greek patients with Rolandic epilepsy and 60 control participants, and explored the association of these polymorphisms with certain clinical and electroencephalographic parameters of the disease. Our results show no difference in bdnf val66met (rs6265), elp4 rs964112 and elp4 rs11031434 genotype frequencies between patients with re and controls. Furthermore the bdnf and elp4 polymorphisms were not related to clinical parameters such as electroencephalographic (eeg) features, type of seizures and response to medication in Greek patients with re. So, the role of bdnf and elp4 polymorphisms remains controversial. Further studies are needed to determine the role of bdnf and elp4 polymorphisms alone, or in interaction with, other genetic or environmental factors in re pathogenesis.
Never-married and childless women in midlife : an exploration of the issues
Creators: name: Herringer, Barbara M.
Publisher: name: University of British Columbia
Year: 2010

description: Before we attempt to make, or influence policy as social workers, we have to know for whom we are making, or changing, policy. The experiences of never-married and childless women in midlife are rarely recorded in the literature. Despite feminist inroads, policy and research concerning midlife women are often based on the assumption and ideology that women in this age group are married and have children. As long as marriage and the nuclear family are seen as the only route for women, those who do not choose such a path will continue to be invisible, or to be seen as deviant. In an attempt to begin building an understanding of women who have, for various reasons, not married, an exploratory qualitative study was conducted in which twelve never-married and childless women in midlife, both lesbian and heterosexual, were interviewed using a semi-structured interview guide. Categories discussed included: family background and relationships; work, income, education, housing; sexual history; reflections on aging and midlife. The goal of this exploratory study is to provide information leading toward an understanding of the population and to provide a base for further research. The study illustrates the diversity of women even within an unrepresentative sample and points to the central importance of a sense of personal autonomy within the lives of never-married midlife women. The twelve interviews support existing research which suggests that education and long-term employment are factors in reducing poverty among women and presents a distillation of analytical categories into three core areas that reflect the respondent's perceptions regarding midlife and aging, work, and her never-married status.
Some new observations on interpolation in the spectral unit ball
Creators: name: Bharali, Gautam
Publisher: name: arXiv
Year: 2007
Subjects: subject: Complex Variables (math.CV)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 30E05, 47A56 (Primary); 32F45 (Secondary)

description: We present several results associated to a holomorphic-interpolation problem for the spectral unit ball Ω_n, n\geq 2. We begin by showing that a known necessary condition for the existence of a $\mathcal{O}(D;Ω_n)$-interpolant (D here being the unit disc in the complex plane), given that the matricial data are non-derogatory, is not sufficient. We provide next a new necessary condition for the solvability of the two-point interpolation problem -- one which is not restricted only to non-derogatory data, and which incorporates the Jordan structure of the prescribed data. We then use some of the ideas used in deducing the latter result to prove a Schwarz-type lemma for holomorphic self-maps of Ω_n, n\geq 2.
description: Added a definition (Def.1.1); 2 of the 4 results herein are minor refinements of those in the author's preprint math.CV/0608177; to appear in Integral Eqns. Operator Theory
The cosmic 6Li and 7Li problems and BBN with long-lived charged massive particles
Creators: name: Jedamzik, Karsten
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Charged massive particles (CHAMPs), when present during the Big Bang nucleosynthesis (BBN) era, may significantly alter the synthesis of light elements when compared to a standard BBN scenario. This is due to the formation of bound states with nuclei. This paper presents a detailed numerical and analytical analysis of such CHAMP BBN. All reactions important for predicting light-element yields are calculated within the Born approximation. Three priorly neglected effects are treated in detail:(a) photodestruction of bound states due to electromagnetic cascades induced by the CHAMP decay, (b) late-time efficient destruction/production of H2, Li6, and Li7 due to reactions on charge Z=1 nuclei bound to CHAMPs, and (c) CHAMP exchange between nuclei. Each of these effects may induce orders-of-magnitude changes in the final abundance yields. The study focusses on the impact of CHAMPs on a possible simultaneous solution of the Li6 and Li7 problems. It is shown that a priorly suggested simultaneous solution of the Li6 and Li7 problems for a relic decaying at tau_x = 1000 sec is only very weakly dependent on the relic being neutral or charged, unless its hadronic branching ratio is Bh << 10^-4 very small. By use of a Monte-Carlo analysis it is shown that within CHAMP BBN the existence of further parameter space for a simultaneous solution of the Li6 and Li7 problem for long decay times tau_x > 10^6 sec seems possible but fairly unlikely.
description: 15 pages (revtex), 14 figures, large changes in analysis and conclusions
The microcanonical ensemble of the ideal relativistic quantum gas
Creators: name: Becattini, F.
name: Ferroni, L.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive the microcanonical partition function of the ideal relativistic quantum gas of spinless bosons in a quantum field framework as an expansion over fixed multiplicities. Our calculation generalizes well known expressions in literature in that it does not introduce any large volume approximation and it is valid at any volume. We discuss the issues concerned with the definition of the microcanonical ensemble for a free quantum field at volumes comparable with the Compton wavelength and provide a consistent prescription of calculating the microcanonical partition function, which is finite at finite volume and yielding the correct thermodynamic limit. Besides an immaterial overall factor, the obtained expression turns out to be the same as in the non-relativistic multi-particle approach. This work is introductory to derive the most general expression of the microcanonical partition function fixing the maximal set of observables of the Poincare' group.
description: 31 pages; published version with minor corrections
Evidence for gapped spin-wave excitations in the frustrated Gd2Sn2O7 pyrochlore antiferromagnet from low-temperature specific heat measurements
Creators: name: Quilliam, J. A.
name: Ross, K. A.
name: Del Maestro, A. G.
name: Gingras, M. J. P.
name: Corruccini, L. R.
name: Kycia, J. B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We have measured the low-temperature specific heat of the geometrically frustrated pyrochlore Heisenberg antiferromagnet Gd2Sn2O7 in zero magnetic field. The specific heat is found to drop exponentially below approximately 350 mK. This provides evidence for a gapped spin-wave spectrum due to an anisotropy resulting from single ion effects and long-range dipolar interactions. The data are well fitted by linear spin-wave theory, ruling out unconventional low energy magnetic excitations in this system, and allowing a determination of the pertinent exchange interactions in this material.
Japanese direct foreign investment : sources and sustainability
Creators: name: Price, Tracy J.E.
Publisher: name: University of British Columbia
Year: 2010

description: In 1984, Japan became the world's leading creditor nation. Although most of this capital has been in the form of foreign portfolio investment (FPI), foreign direct investment (FDI) has contributed significantly to the total. The rapid acceleration of Japanese FDI is evidenced by the fact that the nation's accumulated foreign direct assets in 1988 exceeded $96 billion (in 1980 U.S. dollars) roughly 3 times the 1984 total and 6 times the 1980 total. This startling change in Japan's role in global FDI raises two important questions. Firstly, why has Japan been able to substantially accelerate its foreign direct investments in the 1980s? This study suggests that the country's rapid expansion in FDI is the result of macro-economic developments which have taken place in Japan since 1973. These developments include the transition of the country from a high-growth to slow-growth economy after the first oil crisis; the resultant decline in capital formation requirements and sustained savings surpluses in the private sector; and the committment of the Liberal Democratic Party (LDP) to fiscal austerity after 1978. The second question concerns the future sustainability of Japanese FDI. As described in this study, the answer to the second question depends largely on the answer to the first; namely, that the future rate of Japanese FDI will be determined by the extent to which the macro-economic developments noted above prevail. In format, this study first provides a historical perspective of Japanese offshore direct investment, concentrating on the changing level, nature and motivation of Japanese FDI in the post World War II period. The study then provides a brief analysis of modern FDI theory and its inadequacy for explaining past Japanese FDI or for predicting its future sustainability. After introducing the theoretical rationale behind the study's two main contentions, the analysis then turns to an identification of the forces which are generating the huge amounts of capital currently available for offshore investment. In particular, the study suggests that the dramatic appreciation of Japanese land prices has been a primary cause of excess savings in the private sector. It is these excess savings, coupled with the LDP's committment to balanced budgets after 1978, that have sponsored Japan's remarkable increase in FDI in the 1980s.
Reentrant pion superfluidity and cosmic trajectories within PNJL model
Creators: name: Cao, Gaoqing
name: He, Lianyi
name: Zhang, Pengming
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this work, we self-consistently explore the possibility of charged pion superfluidity and cosmic trajectories in early Universe under the framework of Polyakov-Nambu--Jona-Lasinio model. By taking the badly constrained lepton flavor asymmetries $l_{\rm e}$ and $l_μ$ as free parameters, the upper boundaries of pion superfluidity phase are consistently found to be around the pseudocritical temperature at zero chemical potentials. So the results greatly support the choice of $T=0.16~{\rm GeV}$ as the upper boundary of pion superfluidity in the previous lattice QCD study. Take $l_{\rm e}+l_μ=-0.2$ as an example, we demonstrate the features of pion condensation and the associated cosmic trajectories with the evolution of early Universe. While the trajectory of electric chemical potential reacts strongly at both the lower and upper boundaries of reentrant pion superfluidity, the trajectories of other chemical potentials only respond strongly at the upper boundary.
Charge density wave and finite-temperature transport in minimally twisted bilayer graphene
Creators: name: Chou, Yang-Zhi
name: Wu, Fengcheng
name: Sau, Jay D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study phenomena driven by electron-electron interactions in the minimally twisted bilayer graphene (mTBLG) with a perpendicular electric field. The low-energy degrees of freedom in mTBLG are governed by a network of one-dimensional domain-wall states, described by two channels of one-dimensional linearly dispersing spin-1/2 fermions. We show that the interaction can realize a spin-gapped inter-channel charge density wave (CDW) state at low temperatures, forming a "Coulomb drag" between the channels and leaving only one charge conducting mode. For sufficiently high temperatures, power-law-in-temperature resistivity emerges from the charge umklapp scatterings within a domain wall. Remarkably, the presence of the CDW states can strengthen the charge umklapp scattering and induce a resistivity minimum at an intermediate temperature corresponding to the CDW correlation energy. We further discuss the conditions that resistivity of the network is dominated by the domain walls. In particular, the power-law-in-temperature resistivity results can apply to other systems that manifest topological domain-wall structures.
description: 10+4 pages, 5 figures, published version
Gravitational Positivity Bounds on Scalar Potentials
Creators: name: Noumi, Toshifumi
name: Tokuda, Junsei
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive constraints on scalar field theories coupled to gravity by using recently developed positivity bounds in the presence of gravity. It is found that a canonically-normalized real scalar cannot have an arbitrarily flat potential unless some new physics enters well below the Planck scale. An upper bound on the scale of new physics is determined by loop corrections to the self-energy. Our result provides a swampland condition for scalar potentials.
description: 7+15 pages, 3+9 figures, v2: to appear in PRD
A ALEGRIA CRIATIVA DE ENSINAR E APRENDER NA EDUCAÇÃO  INFANTIL
Creators: name: RODRIGUES MARTINS, MARIA DA CONCEIÇÃO
Publisher: name: Zenodo
Year: 2023

description: A educação infantil constitui-se como importante etapa da Educação Básica assumido a base formativa das futuras gerações. Assim, é primordial que o professor esteja em constante estudo, situando-se, experimentando novas possibilidades de dinamizar o seu fazer didático, atento novas estratégias metodológicas e as demandas próprias da infância na contemporaneidade. Nesse contexto que entra a importância da criatividade presente em processos lúdicos pedagógicos, que tem como principal característica a utilização de atividades brincantes, prazerosas, capazes de despertar melhor atenção e participação das crianças. A proposta investigativa assume-se como pesquisa participante, com aporte bibliográfico e abordagem qualitativa, esta ocorre na escola Municipal Dr. Urbano Maria Euláliopor meio do Programa Residência Pedagógica da Universidade Federal do Piauí-UFPI, na cidade de Picos. O objetivo é identificar o potencial criativo dos residentes e professores daque atuam nessa na referida escola, bem como as alegrias possíveis por meio de ações didáticas criativas. O estudo toma como base os estudos dos autores Nascimento (2022), Fortuna (2000), Duarte (2010), Snyder (1988). A partir dos achados da pesquisa concluímos que ações didáticas que optam por metodologias lúdicas podem contribuir na facilitação do processo de aprendizagem dos alunos da educação infantil, auxiliando os professores a criarem um ambiente mais atrativo, alegre, gerador de satisfação cultural. Sendo a sala de aula algo além um lugar destinado ao ensino cartesiano, mas como um lugar destinado a ensinar e aprender com alegria.
The CGEM-IT readout chain
Creators: name: Amoroso, A.
name: Ferroli, R. Baldini
name: Balossino, I.
name: Bertani, M.
name: Bettoni, D.
name: Bianchi, F.
name: Bortone, A.
name: Bugalho, R.
name: Calcaterra, A.
name: Cerioni, S.
name: Chiozzi, S.
name: Cibinetto, G.
name: Ramusino, A. Cotta
name: Cossio, F.
name: Rolo, M. Da Rocha
name: De Mori, F.
name: Destefanis, M.
name: Di Francesco, A.
name: Evangelisti, F.
name: Farinelli, R.
name: Fava, L.
name: Felici, G.
name: Garbolino, S.
name: Garzia, I.
name: Gatta, M.
name: Giraudo, G.
name: Gramigna, S.
name: Greco, M.
name: Lavezzi, L.
name: Maggiora, M.
name: Malaguti, R.
name: Mangoni, A.
name: Marcello, S.
name: Marciniewski, P.
name: Melchiorri, M.
name: Mezzadri, G.
name: Mignone, M.
name: Morgante, S.
name: Pace, E.
name: Pacetti, S.
name: Patteri, P.
name: Rivetti, A.
name: Scodeggio, M.
name: Sosio, S.
name: Spataro, S.
name: Varela, J.
name: Wheadon, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: An innovative Cylindrical Gas Electron Multiplier (CGEM) detector is under construction for the upgrade of the inner tracker of the BESIII experiment. A novel system has been worked out for the readout of the CGEM detector, including a new ASIC, dubbed TIGER -Torino Integrated GEM Electronics for Readout, designed for the amplification and digitization of the CGEM output signals. The data output by TIGER are collected and processed by a first FPGA-based module, GEM Read Out Card, in charge of configuration and control of the front-end ASICs. A second FPGA-based module, named GEM Data Concentrator, builds the trigger selected event packets containing the data and stores them via the main BESIII data acquisition system. The design of the electronics chain, including the power and signal distribution, will be presented together with its performance.