cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Σύγχρονες τάσεις δασικής πολιτικής:
Creators: name: Παπακώστας, Ευστάθιος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Τάσεις δασικής πολιτικής
Tendecies forest policy

description: Ο 21ος αιώνας θεωρείται ο πλέον κρίσιμος αιώνας, όχι μόνο για την επιβίωση της ανθρωπότητας αλλά και για τη διάσωση των εναπομεινάντων δασών. Αυτές οι δύο παράμετροι είναι αλληλοεξαρτώμενες και η ύπαρξη της μιας προϋποθέτει την συνύπαρξη της άλλης. Τα δάση αποτελούν έναν από τους πιο σημαντικούς ανανεώσιμους πόρους και παρέχουν πολλά πλεονεκτήματα στην κοινωνία και την οικονομία. Είναι επίσης σημαντικά για την διαφύλαξη της ισορροπίας της φύσης. Όλα τα παραπάνω, επιβάλλουν την άσκηση μιας ουσιαστικής και ορθολογικής Δασικής Πολιτικής. Κατόπιν, της περιγραφής και των διαπιστώσεων περί «των σύγχρονων τάσεων της υφιστάμενης Δασικής Πολιτικής» σε διεθνές, ευρωπαϊκό αλλά και σε εθνικό επίπεδο επιχειρείται δια της παρούσας, με έμφαση στην περίπτωση της Ελλάδας, να τεθούν για συζήτηση σκέψεις και προτάσεις, για μια «Νέα Δασική Πολιτική» αντάξια των απαιτήσεων των καιρών.
description: 21st century is considered to be the most crucial, not only for the survival of humanity being but also for the rescue of forests that remained.These two are reciprocally interdependent and the achievement of one, presupposes the achievement of the other. The forests constitute one of the most important renewable resources and provide a lot of advantages in the society and the economy, as well. It is also considerably for the safeguarding of the balance of nature. All the above, impose the exercise of an essential and rational Forestall Policy. After, the description and the ascertainment for “modern tendencies of existing Forestall Policy” in international, in European and in national level as well, it is attempted via present, with accent in the case of Greece, to be under discussion thoughts and proposals for a value “New Forestall Policy ”, as modern times required it.
The quinonoid pigments of the lichens nephroma laevigatum and heterodermia obscurata
Creators: name: Cohen, Peter Altman
Publisher: name: University of British Columbia
Year: 2009

description: Field samples of the foliose lichens Nephroma Iaevigatum Ach. and Hetero dermia obscurata (NyL) Trevis. were analyzed for anthraquinone and anthraquinone like pigments. Both lichens were found to contain emodin, 7-chioroemodin and 7,7’- dichiorohypericin. In addition, the N. Iaevigatum specimen contained 7-chloro-1 - O- methylemodin, 7-chloro- 1- O-methyl-ψ-hydroxyemodin (7-ch lorocarviolin) and 2,2’, 7,7’-tetrachlorohypericin, while the H. obscurata sample contained 5 ,7-dichloroemodin, flavoobscurin A and flavoobscurin B. Laboratory incubation studies with N. Iaevi gatum ( in the presence of sodium [ 1-¹³C]acetate) also revealed the formation of 5- chloroemodin, 5-chloro- 1- O-methylemodin, 5-chloro-ψ-hydroxyemodin and 5-chloro- 1- O-methyl-ψ-hydroxyemodin (5-chiorocarviolin). These compounds had not been identified in any previous examination of field-collected lichen, and 5-chloro-1 -O-methylemodin, although known from a fungus, has not been reported to occur in any lichen. The structures of the compounds were determined by a combination of UV, MS, ¹H NMR and ¹³C NMR spectral methods. Feeding experiments with sodium [2-¹⁴C]acetate and sodium [1-¹³C]acetate demonstrated that anthraquinones are biosynthesized in Nephroma Iaevigatum through the polyketide pathway, analogous to the pathways operating in fungi and higher plants. The lichen was also capable of chlorinating endogenous anthraquinones during incubation with sodium ³⁶chloride Biohalogenation experiments with a partially purified lichen chioroperoxidase and a commercially available fungal chloroperoxidase demonstrated enzymesubstrate specificity with respect to the production of different chlorinated anthraquinones. 5,7-Dichloroemodin was produced, in excellent yield, from 7-chioroemodin by the commercial enzyme; the lichen chloroperoxidase, however, yielded only 7- chloroemodin from emodin and did not further chlorinate 7-chloroemodin. 5-Chloroemodin was a product from both the control and commercial enzyme reactions. Twelve lichen anthraquinones, bianthrones, hypericin derivatives, and syn thetic hypericin were tested for their virucidal activity in end-point CPE (viral cyto pathic effects) and plaque assays with herpes simplex virus type 1 (HSV-1). Emodin, 7-chloroemodin, 7-chloro- 1- O-methylemodin, 5,7-dichloroemodin, hypericin and 7,7’-dichlorohypericin exhibited fair to good antiviral activity in the presence of light. In the plaque assay, 5,7-dichioroemodin, hypericin and 7,7’-dichlorohypericin completely inhibited the virus at a concentration of 1.0 μg/mI. Only hypericin was active at 0.01 μg/mI. The other anthraquinones and bianthrones were inactive at a concentration of 5.0 μg/mI.
Bound-state solutions of the Klein-Gordon equation for the generalized PT-symmetric Hulthen potential
Creators: name: Egrifes, Harun
name: Sever, Ramazan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The one-dimensional Klein-Gordon equation is solved for the PT-symmetric generalized Hulthen potential in the scalar coupling scheme. The relativistic bound-state energy spectrum and the corresponding wave functions are obtained by using the Nikiforov-Uvarov method which is based on solving the second-order linear differential equations by reduction to a generalized equation of hypergeometric type.
description: 23 pages including 2 figures and 1 table. To appear in International Journal of Theoretical Physics
Entanglement witnesses and concurrence for multi-qubit states
Creators: name: Heydari, Hoshang
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We establish a relation between concurrence and entanglement witnesses. In particular, we construct entanglement witnesses for three-qubit W and GHZ states in terms of concurrence and different set of operators that generate it. We also generalize our construction for multi-qubit states.
description: 5 pages
Weak Lensing of Galaxy Clusters in MOND
Creators: name: Takahashi, Ryuichi
name: Chiba, Takeshi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study weak gravitational lensing of galaxy clusters in terms of the MOND (MOdified Newtonian Dynamics) theory. We calculate shears and convergences of background galaxies for three clusters (A1689, CL0024+1654, CL1358+6245) and the mean profile of 42 SDSS (Sloan Digital Sky Survey) clusters and compare them with observational data. The mass profile is modeled as a sum of X-ray gas, galaxies and dark halo. For the shear as a function of the angular radius, MOND predicts a shallower slope than the data irrespective of the critical acceleration parameter $g_0$. The dark halo is necessary to explain the data for any $g_0$ and for three interpolation functions. If the dark halo is composed of massive neutrinos, its mass should be heavier than 2 eV. However the constraint still depends on the dark halo model and there are systematic uncertainties, and hence the more careful study is necessary to put a stringent constraint.
description: 12 pages, 7 figures, references added, minor changes, accepted for publication in ApJ
Small x Resummation with Quarks: Deep-Inelastic Scattering
Creators: name: Altarelli, Guido
name: Ball, Richard D.
name: Forte, Stefano
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We extend our previous results on small-x resummation in the pure Yang--Mills theory to full QCD with nf quark flavours, with a resummed two-by-two matrix of resummed quark and gluon splitting functions. We also construct the corresponding deep-inelastic coefficient functions, and show how these can be combined with parton densities to give fully resummed deep-inelastic structure functions F_2 and F_L at the next-to-leading logarithmic level. We discuss how this resummation can be performed in different factorization schemes, including the commonly used MSbar scheme. We study the importance of the resummation effects by comparison with fixed-order perturbative results, and we discuss the corresponding renormalization and factorization scale variation uncertainties. We find that for x below 0.01 the resummation effects are comparable in size to the fixed order NNLO corrections, but differ in shape. We finally discuss the phenomenological impact of the small-x resummation, specifically in the extraction of parton distribution from present day experiments and their extrapolation to the kinematics relevant for future colliders such as the LHC
description: 45 pages, 16 figures, plain TeX with harvmac
A symmetry for vanishing cosmological constant
Creators: name: Erdem, Recai
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Two different realizations of a symmetry principle that impose a zero cosmological constant in an extra-dimensional set-up are studied. The symmetry is identified by multiplication of the metric by minus one. In the first realization of the symmetry this is provided by a symmetry transformation that multiplies the coordinates by the imaginary number i. In the second realization this is accomplished by a symmetry transformation that multiplies the metric tensor by minus one. In both realizations of the symmetry the requirement of the invariance of the gravitational action under the symmetry selects out the dimensions given by D = 2(2n+1), n=0,1,2,... and forbids a bulk cosmological constant. Another attractive aspect of the symmetry is that it seems to be more promising for quantization when compared to the usual scale symmetry. The second realization of the symmetry is more attractive in that it is posible to make a possible brane cosmological constant zero in a simple way by using the same symmetry, and the symmetry may be identified by reflection symmetry in extra dimensions.
description: Talk in the conference IRGAC 2006, 2nd International Conference on Quantum Theories and Renormalization Group in Gravity and Cosmology, Barcelona
Role of the cytoskeleton and substratum in cell topographic guidance
Creators: name: Oakley, Carol
Publisher: name: University of British Columbia
Year: 2009

description: Topographic guidance refers to reactions of cells with the topography of their substratum and includes alterations in cell shape, orientation and polarity of movement. Current hypotheses focus on the cytoskeleton although most observations have been limited to cells that were already oriented with their substratum topography. In this thesis I addressed this shortcoming, tested the current theories of contact guidance and hypothesized that there may be a prime or principal cytoskeletal determinant of fibroblast orientation on micromachined grooves. I predicted that the principal cytoskeletal determinant of contact guidance would be the first cytoskeletal component to become aligned with the topography, would be most sensitive to size and arrangement of the topography and would be able to exert its influence independently. Furthermore, if the principal determinant was also the sole determinant, then contact guidance would not occur in its absence. Finally, the principal component would operate in other cell types. The hypotheses and predictions were tested directly by examining the development of cytoskeletal alignment in relation to overall cell shape and alignment as fibroblasts spread on micromachined grooved substrata. Time-lapse cinematography, conventional and confocal epifluorescence microscopy and computer-assisted morphometry indicated that microtubules were the first cytoskeletal element to become aligned and microtubule alignment preceded alignment of the cells themselves. Cell spreading and alignment in the presence of specific inhibitors of microtubules (colcemid) and actin microfilament bundles (cytochalasin) on micromachined grooves that differed in size demonstrated that the integrity of either the microtubule or actin system could be sufficient to produce alignment with an appropriate substratum topography but cells deficient in microtubules required significantly more time to accomplish these behaviours. These experiments demonstrated that microtubules were the principal but not the sole cytoskeletal determinant of contact guidance on micromachined grooves. Microtubules responded faster and to smaller topographic features than microfilaments but unless the topography elicited alignment of both the microtubule and actin systems, the influence of microtubules upon cell alignment was tempered. I concluded that the substratum topography could selectively or differentially effect alignment of the microtubule and actin systems so that cell alignment and migration could be enhanced or retarded.
Insights into nature of magnetization plateaus of a nickel complex [Ni4(CO3)2(aetpy)8](ClO4)4 from a spin-1 Heisenberg diamond cluster
Creators: name: Karlova, Katarina
name: Strecka, Jozef
name: Hanis, Jozef
name: Hagiwara, Masayuki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Magnetic and magnetocaloric properties of a spin-1 Heisenberg diamond cluster with two different coupling constants are investigated with the help of an exact diagonalization based on the Kambe's method, which employs a local conservation of composite spins formed by spin-1 entities located in opposite corners of a diamond spin cluster. It is shown that the spin-1 Heisenberg diamond cluster exhibits several intriguing quantum ground states, which are manifested in low-temperature magnetization curves as intermediate plateaus at 1/4, 1/2 and 3/4 of the saturation magnetization. Besides, the spin-1 Heisenberg diamond cluster may also exhibit an enhanced magnetocaloric effect, which may be relevant for a low-temperature refrigeration achieved through the adiabatic demagnetization. It is evidenced that the spin-1 Heisenberg diamond cluster with the antiferromagnetic coupling constants J1/kB = 41.4 K and J2/kB = 9.2 K satisfactorily reproduces a low-temperature magnetization curve recorded for the tetranuclear nickel complex [Ni4(CO3)2(aetpy)8](ClO4)4 (aetpy = 2-aminoethyl-pyridine) including a size and position of intermediate plateaus detected at 1/2 and 3/4 of the saturation magnetization. A microscopic nature of fractional magnetization plateaus observed experimentally is clarified and interpreted in terms of valence-bond crystal with either a single or double valence bond. It is suggested that this frustrated magnetic molecule can provide a prospective cryogenic coolant with the maximal isothermal entropy change - Delta S = 10.6 J/(K.kg) in a temperature range below 2.3 K.
description: 17 pages, 10 figures
Strategies for the preparation of large cluster states using non-deterministic gates
Creators: name: Rohde, Peter P.
name: Barrett, Sean D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The cluster state model for quantum computation has paved the way for schemes that allow scalable quantum computing, even when using non-deterministic quantum gates. Here the initial step is to prepare a large entangled state using non-deterministic gates. A key question in this context is the relative efficiencies of different `strategies', i.e. in what order should the non-deterministic gates be applied, in order to maximize the size of the resulting cluster states? In this paper we consider this issue in the context of `large' cluster states. Specifically, we assume an unlimited resource of qubits and ask what the steady state rate at which `large' clusters are prepared from this resource is, given an entangling gate with particular characteristics. We measure this rate in terms of the number of entangling gate operations that are applied. Our approach works for a variety of different entangling gate types, with arbitrary failure probability. Our results indicate that strategies whereby one preferentially bonds together identical qubits are considerably more efficient than those in which one does not. Additionally, compared to earlier analytic results, our numerical study offers substantially improved resource scaling.
description: 9 pages, 7 figures
Additional file 1 of Variability in daily or weekly working hours and self-reported mental health problems in Korea, Korean working condition survey, 2017
Creators: name: Lee, Hye-Eun
name: Myoung-Hee Kim
name: Choi, Min
name: Hyoung-Ryoul Kim
name: Kawachi, Ichiro
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 1: Supplementary Table S1. Distribution of variable working hours.
Interplay of Valence and Semimetal-to-Insulator Transitions in SmS
Creators: name: Watanabe, Shinji
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recent discoveries of a new type of quantum criticality arising from Yb-valence fluctuations in Yb-based metal in periodic crystal and quasicrystal have opened a new class of quantum critical phenomena in correlated electron systems. To clarify whether this new concept can be generalized to other rare-earth-based semimetal and insulator, we study SmS which exhibits golden-black phase transition under pressure. By constructing the model for SmS, we show that Coulomb repulsion between 4f and 5d orbitals at Sm drives first-order valence transition (FOVT) and semimetal-to-insulator transition (MIT) simultaneously, which explains the golden-black phase transition. We clarify the ground-state phase diagram for the FOVT and MIT by identifying the quantum critical point of the FOVT. We find that exciton condensates in both semimetal and insulator phases. Our result explains measured peak anomalies in the specific heat and compressibility in pressurized golden SmS and provides a cue to clarify recently-observed anomalies in black SmS.
description: 5 pages, 5 figures
Fixing the functoriality of Khovanov homology
Creators: name: Clark, David
name: Morrison, Scott
name: Walker, Kevin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25; 57M27; 57Q45

description: We describe a modification of Khovanov homology (math.QA/9908171), in the spirit of Bar-Natan (math.GT/0410495), which makes the theory properly functorial with respect to link cobordisms. This requires introducing `disorientations' in the category of smoothings and abstract cobordisms between them used in Bar-Natan's definition. Disorientations have `seams' separating oppositely oriented regions, coming with a preferred normal direction. The seams satisfy certain relations (just as the underlying cobordisms satisfy relations such as the neck cutting relation). We construct explicit chain maps for the various Reidemeister moves, then prove that the compositions of chain maps associated to each side of each of Carter and Saito's movie moves (MR1238875, MR1445361) always agree. These calculations are greatly simplified by following arguments due to Bar-Natan and Khovanov, which ensure that the two compositions must agree, up to a sign. We set up this argument in our context by proving a result about duality in Khovanov homology, generalising previous results about mirror images of knots to a `local' result about tangles. Along the way, we reproduce Jacobsson's sign table (math.GT/0206303) for the original `unoriented theory', with a few disagreements.
description: 91 pages. Added David Clark as co-author. Further detail on variations of third Reidemeister moves, to allow treatment of previously missing cases of movie move six. See changelog section for more detail
title: Knoblauch :
title: Richtlinien für die Durchführung der Prüfung auf Unterscheidbarkeit, Homogenität und Beständigkeit.
titleType: Subtitle
Creators: name: International Union For The Protection Of New Varieties Of Plants,
Publisher: name: International Union for the Protection of New Varieties of Plants,
Year: 0
Subjects: Group identity.
New Varieties of Plants
Garlic

description: Zweck dieser Richtlinien („Prüfungsrichtlinien“) ist es, die in der Allgemeinen Einführung (Dokument TG/1/3) und deren verbundenen TGP-Dokumenten enthaltenen Grundsätze in detaillierte praktische Anleitung für die harmonisierte Prüfung der Unterscheidbarkeit, der Homogenität und der Beständigkeit (DUS) umzusetzen und insbesondere geeignete Merkmale für die DUS-Prüfung und die Erstellung harmonisierter Sortenbeschreibungen auszuweisen.
Controllability of open quantum systems with Kraus-map dynamics
Creators: name: Wu, Rong
name: Pechen, Alexander
name: Brif, Constantin
name: Rabitz, Herschel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: This paper presents a constructive proof of complete kinematic state controllability of finite-dimensional open quantum systems whose dynamics are represented by Kraus maps. For any pair of states (pure or mixed) on the Hilbert space of the system, we explicitly show how to construct a Kraus map that transforms one state into another. Moreover, we prove by construction the existence of a Kraus map that transforms all initial states into a predefined target state (such a process may be used, for example, in quantum information dilution). Thus, in sharp contrast to unitary control, Kraus-map dynamics allows for the design of controls which are robust to variations in the initial state of the system. The general formalism is illustrated with examples of state-to-state Kraus transformations in a two-level system. In particular, we construct a family of non-unitary Kraus maps, which transform one pure state into another. The problem of dynamic state controllability of open quantum systems (i.e., controllability of state-to-state transformations, given a set of available dynamical resources such as coherent controls, incoherent interactions with the environment, and measurements) is also discussed.
description: 16 pages
Avoimella toimintakulttuurilla näkyvyyttä ja vaikuttavuutta
Creators: name: Kylmälä, Kaisa
name: Pajari, Jussi
Publisher: name: Zenodo
Year: 2019
Subjects: tutkimusaineisto
tutkimusdatan hallinta
aineistonhallinta
tutkimus- ja kehittämistoiminta
tutkijan työ
tutkijan taidot

description: Aineistonhallinta ammattikorkeakoulujen TKI-hankkeissa. Esitelmä pidetty TAMK-konferenssissa 7.2.2019.
Ένα σύστημα αυτόματης ανάλυσης κειμένων της Νέας Ελληνικής: μέθοδος μορφολογικής περιγραφής και ηλεκτρονικής κωδικοποίησης των τραπεζικών όρων.:
Creators: name: Μπουνάκη, Ελένη Αννα
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Σύστημα αυτόματης ανάλυσης κειμένων
Μορφολογική περιγραφή
Τραπεζικοί Όροι
Automatic text analysis system
Morphological description
Banking Terms

description: Σκοπός αυτής της εργασίας είναι η έρευνα και η δημιουργία μιας συλλογής τραπεζικών όρων της ελληνικής γλώσσας, καθώς και η ηλεκτρονική κωδικοποίησή τους σε μορφολογικό επίπεδο. Αυτή η μελέτη συμβάλλει στην προσπάθεια δημιουργίας λεξικών, τα οποία θα χρησιμοποιηθούν για την υλοποίηση του συστήματος αυτόματης ανάλυσης Unitex. Πιο συγκεκριμένα, γίνεται μια ιστορική αναδρομή για την επιστήμη της ορολογίας και ακολουθεί η ανάλυση των ηλεκτρονικών μορφολογικών λεξικών, του συστήματος Unitex και του προγράμματος αυτόματης κλίσης, Genereflexion. Στη συνέχεια, γίνεται αναφορά στις πηγές που χρησιμοποιήθηκαν για την υλοποίηση της συλλογής, καθώς και στην περιγραφή της. Επίσης, η εργασία ασχολείται με τα προβλήματα που παρουσιάστηκαν κατά τη συλλογή και κωδικοποίηση των τραπεζικών όρων, αλλά και με την αντιμετώπισή τους. Στο τέλος παρουσιάζεται η εφαρμογή της συλλογής στο σύστημα Unitex.
description: The aim of this thesis is the research and creation of a corpus which includes banking terms for the Modern Greek language as well as their electronic coding at a morphological level. This study contributes to an effort that is realized in order to create dictionaries which will be used in the implementation of the automatic text analysis system, Unitex. In particular, the thesis presents a historical reference to the discipline of terminology and then, an analysis of the electronic morphological dictionaries, Unitex system and Genereflexion, an automatic conjugation program. Furthermore, there is a presentation of the sources used for the corpus’ creation as well as its description. Then, the thesis deals with the issues occurred while gathering and coding banking terms and their resolution. In conclusion, the corpus’ application on the Unitex system is described.
Menopause sex characteristics
Creators: name: Zha, Jian Zhong
Publisher: name: F1000Research
Year: 2015

description: Menopause sex problem, a problem many women will experience. Typically, scholars used to use, "Obstetrics and Gynecology" thinking to look at women's sexual problems, it is to use "medical illness" or "Reproductive Medicine" understanding related to their sexuality. In fact, they often gave us a misleading perception such as: FSD view; menopause "aging" of the view; in fact, it should stand sexologist sexology and reproductive dimensions of species competition, independent thinking: What Menopause Because of what affects the sex? What to do will have a perfect menopause?
Intersections and joins of free groups
Creators: name: Kent, Richard P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: Let H and K be subgroups of a free group of ranks h and k \geq h. We prove the following strong form of Burns' inequality: rank(H \cap K) - 1 \leq 2(h-1)(k-1) - (h-1)(rank(H \vee K) -1). A corollary of this, also obtained by L. Louder and D. B. McReynolds, has been used by M. Culler and P. Shalen to obtain information regarding the volumes of hyperbolic 3-manifolds. We also prove the following particular case of the Hanna Neumann Conjecture, which has also been obtained by Louder. If the join of H and K has rank at least (h + k + 1)/2, then the intersection of H and K has rank no more than (h-1)(k-1) + 1.
description: 18 pages, 4 figures. Referee's comments incorporated. To appear in Algebraic & Geometric Topology
A spectral study of the black hole X-ray binary MAXI J1820+070 with AstroSat and NuSTAR
Creators: name: Chakraborty, Sudip
name: Navale, Nilam
name: Ratheesh, Ajay
name: Bhattacharyya, Sudip
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: MAXI J1820+070 is a newly discovered transient black hole X-ray binary, which showed several spectral and temporal features. In this work, we analyse the broadband X-ray spectra from all three simultaneously observing X-ray instruments onboard AstroSat, as well as contemporaneous X-ray spectra from NuSTAR, observed during the hard state of MAXI J1820+070 in March 2018. Implementing a combination of multi-colour disc model, relativistic blurred reflection model relxilllpCp and a distant reflection in the form of xillverCp, we achieve reasonable and consistent fits for AstroSat and NuSTAR spectra. The best-fit model suggests a low temperature disc ($kT_{\rm in} \sim 0.3$ keV), iron overabundance ($A_{\rm Fe} \sim 4-5$ solar), a short lamp-post corona height ($h \lesssim 8 R_{\rm g}$), and a high corona temperature ($kT_{\rm e} \sim 115-150$ keV). Addition of a second Comptonisation component leads to a significantly better fit, with the $kT_{\rm e}$ of the second Comptonisation component being $\sim 14-18$ keV. Our results from independent observations with two different satellites in a similar source state indicate an inhomogeneous corona, with decreasing temperature attributed to increasing height. Besides, utilising the broader energy coverage of AstroSat, we estimate the black hole mass to be $6.7-13.9 \ M_{\odot}$, consistent with independent measurements reported in the literature.
ЗНАЧИМОСТЬ УРОВНЯ ИНТЕРЛЕЙКИНА-1Α ОДИН ИЗ ФАКТОРОВ УСПЕШНОСТИ ЭКСТРАКОРПОРАЛЬНОГО ОПЛОДОТВОРЕНИЯ
Creators: name: Абдужаппарова, Назирахон
Publisher: name: Zenodo
Year: 2024

description: Для обеспечения здоровья населения, необходимо соблюдение важнейшей медико-социальной задачи – охраны репродуктивного здоровья. В результате исследований, было установлено, что у 40-50% инфертильных женщин диагностируется трубно-перитонеальная (ТПБ) форма бесплодия. Воспалительные заболевания придатков матки специфической и неспецифической этиологии, оперативные вмешательства на органах малого таза, осложненные аборты и роды, различные лечебно-диагностические манипуляции являются причинами развития ТПБ. Изменения в маточных трубах приводят к их полной или частичной окклюзии, возникновению спаек, нарушению сократительной функции, что приводит к нарушению транспорта яйцеклетки в полость матки. Одним из современных методов восстановления фертильности женщин с ТПБ является экстракорпоральное оплодотворение (ЭКО).
Construction of Periodic Counterexamples to the Discrete-Time Kalman Conjecture
Creators: name: Seiler, Peter
name: Carrasco, Joaquin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper considers the Lurye system of a discrete-time, linear time-invariant plant in negative feedback with a nonlinearity. Both monotone and slope-restricted nonlinearities are considered. The main result is a procedure to construct destabilizing nonlinearities for the Lurye system. If the plant satisfies a certain phase condition then a monotone nonlinearity can be constructed so that the Lurye system has a non-trivial periodic cycle. Several examples are provided to demonstrate the construction. This represents a contribution for absolute stability analysis since the constructed nonlinearity provides a less conservative upper bound than existing bounds in the literature.
description: 6 pages, 8 figures, submitted to IEEE CSL
Cold CO Gas in Protoplanetary Disks
Creators: name: Aikawa, Yuri
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In a disk around DM Tau, previous observation of 13CO (J=2-1 and 1-0 transitions) derived the 13CO gas temperature of \sim 13-20K, which is lower than the sublimation temperature of CO (20 K). We argue that the existence of such cold CO can be explained by a vertical mixing of disk material. As the gas is transported from a warm layer to a cold layer, CO is depleted onto dust grains with a timescale of \sim 10^3 yr. Because of the steep temperature gradient in the vertical direction, an observable amount of CO is still in the gas phase when the fluid parcel reaches the layer of \sim 13 K. Apparent temperature of CO decreases as the maximum grain size increases from micron-size to mm-size.
description: 11 pages, 2 figures, accepted to ApJL
Additional file 2 of Substance use and symptoms of mental health disorders: a prospective cohort of patients with severe substance use disorders in Norway
Creators: name: Aas, Christer Frode
name: Vold, Jørn Henrik
name: Gjestad, Rolf
name: Skurtveit, Svetlana
name: Lim, Aaron Guanliang
name: Gjerde, Kristian Varden
name: Else-Marie Løberg
name: Johansson, Kjell Arne
name: Fadnes, Lars Thore
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2. Pen’s Parade: SCL-10 = Symptoms checklist 10; ten items scale for measuring mental health status/psychological distress. The figure shows distribution in SCL-10 mean values at baseline (n = 707) by fixed black line. The dotted lines represent the mean reported SCL-10 score of the Norwegian reference population (1.36) and standard reference of 1.85 indicating one or more mental disorders above this cut-off, respectively. Source: Strand BH, Dalgard OS, Tambs K, Rognerud M: Measuring the mental health status of the Norwegian population: a comparison of the instruments SCL-25, SCL-10, SCL-5 and MHI-5 (SF-36). Nordic journal of psychiatry 2003.
Error mitigation via verified phase estimation
Creators: name: O'Brien, Thomas E.
name: Polla, Stefano
name: Rubin, Nicholas C.
name: Huggins, William J.
name: McArdle, Sam
name: Boixo, Sergio
name: McClean, Jarrod R.
name: Babbush, Ryan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The accumulation of noise in quantum computers is the dominant issue stymieing the push of quantum algorithms beyond their classical counterparts. We do not expect to be able to afford the overhead required for quantum error correction in the next decade, so in the meantime we must rely on low-cost, unscalable error mitigation techniques to bring quantum computing to its full potential. This paper presents a new error mitigation technique based on quantum phase estimation that can also reduce errors in expectation value estimation (e.g., for variational algorithms). The general idea is to apply phase estimation while effectively post-selecting for the system register to be in the starting state, which allows us to catch and discard errors which knock us away from there. We refer to this technique as "verified phase estimation" (VPE) and show that it can be adapted to function without the use of control qubits in order to simplify the control circuitry for near-term implementations. Using VPE, we demonstrate the estimation of expectation values on numerical simulations of intermediate scale quantum circuits with multiple orders of magnitude improvement over unmitigated estimation at near-term error rates (even after accounting for the additional complexity of phase estimation). Our numerical results suggest that VPE can mitigate against any single errors that might occur; i.e., the error in the estimated expectation values often scale as O(p^2), where p is the probability of an error occurring at any point in the circuit. This property, combined with robustness to sampling noise reveal VPE as a practical technique for mitigating errors in near-term quantum experiments.
description: 18 pages + 7 page appendix, 11 figures
On the First Generation of Stars
Creators: name: Silk, Joseph
name: Langer, Mathieu
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We argue that the first stars may have spanned the conventional mass range rather than be identified with the Very Massive Objects (100-1000 solar masses) favoured by numerical simulations. Specifically, we find that magnetic field generation processes acting in the first protostellar systems suffice to produce fields that exceed the threshold for MRI instability to operate and thereby allow the MRI dynamo to generate equipartition-amplitude magnetic fields on protostellar mass scales below 50 solar masses. Such fields allow primordial star formation to occur at essentially any metallicity by regulating angular momentum transfer, fragmentation, accretion and feedback in much the same way as occurs in conventional molecular clouds.
description: Submitted to MNRAS
Barrierefreiheit durch Peers – ein Pilotprojekt
Creators: name: Zahnd, Raphael
name: Hellmüller, Ursula
Publisher: name: Forum Neue Medien in der Lehre Austria
Year: 2020
Subjects: subject: 370 - Erziehung, Schul- und Bildungswesen

description: Das Projekt „Barrierefreiheit durch Peers“ wurde mit dem Ziel entwickelt, einen Beitrag zur Entwicklung inklusiver Hochschulen zu leisten. Es basiert auf der Grundidee, Ressourcen von Studierenden des Studiengangs Sonderpädagogik zu nutzen, um Hochschulen barriereärmer zu machen. Dabei folgt das Projekt zunächst der Logik, Barrieren im Hochschulkontext durch den Miteinbezug von Studierenden mit Behinderung zu identifizieren. Danach werden die identifizierten Barrieren in Lehrveranstaltungen aufgegriffen und durch die dort eingeschriebenen Studierenden bearbeitet. Dies mit dem Ziel, konkrete Maßnahmen zu entwickeln, um die Barrieren zu verringern.
Shadows in the forest : Japan and the politics of timber in Southeast Asia
Creators: name: Dauvergne, Peter
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation creates two new theoretical tools to analyze connections between politics and environmental change. The first section develops the concept of Northern ‘shadow ecologies’ to understand the environmental impact of a Northern state on Southern resource management. A Northern shadow ecology is the aggregate environmental impact of government aid and loans; corporate investment and technology transfers; and trade, including purchasing practices, consumption, export and consumer prices, and import tariffs. After outlining Japan’s shadow ecology, the next part constructs an analytical lens to uncover salient Southern political causes of timber mismanagement. This spotlights modern patron-client links between Southern officials and private operators that debilitate state capacity to implement resource policies. Using these analytical tools, and building on extensive primary sources and more than 100 in-depth interviews, the remainder of the thesis examines the two most important factors driving commercial timber mismanagement in Indonesia, Borneo Malaysia, and the Philippines: pervasive patron-client ties between Southeast Asian officials and timber operators; and the residual and immediate environmental impact of Japan. In a continual struggle to retain power in societies with fragmented social control, Southeast Asian state leaders build potent patron-client networks that syphon state funds, distort policies, and undermine supervision of state implementors. In this setting, the state is often unable to enforce timber management rules as implementors -- in exchange for gifts, money, or security -- ignore or assist destructive and illegal loggers, smugglers, and tax evaders. Japan’s shadow ecology has expedited timber mismanagement, and left deep environmental scars that impede current efforts to improve timber management. Post-1990 Japanese government and corporate policy changes to integrate environmental concerns have marginally improved forestry ODA, and contributed to token corporate conservation projects. As well, there is now less Japanese investment, technology, and credit linked to logging. But massive timber purchases from unsustainable sources, wasteful consumption, timber prices that ignore environmental and social costs, import barriers that deplete Southern revenues, and the residual impact of past Japanese practices continue to accelerate destructive logging in Southeast Asia. Sustainable tropical timber management will require fundamental changes to Japan’s shadow ecology. It is also imperative to confront Southern political forces driving deforestation. While reforms will certainly face formidable -- perhaps insurmountable -- political and economic barriers, unless the world community tackles these issues, the remaining primary forests of Southeast Asia will soon perish.
1.5b_Hsieh: Tutorial on How to Use the SWiFT Facility Data Archive and Portal Data
Creators: name: Hsieh, Alan
name: Herges, Thomas
name: Maniaci, David
name: Naughton, Brian
Publisher: name: Zenodo
Year: 2019

description: WESC Presentation from session 1.5b (Measuring Wakes with Remote Sensing)
Time-Reversal Violation in Threshold $\vec{n}$ $\vec{p}$ Scattering
Creators: name: Liu, C. -P.
name: Timmermans, R. G. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate parity and time-reversal violation in neutron-proton scattering in the optical regime. We calculate the neutron spin rotation and analyzing power in scattering on polarized protons. This allows us to quantify the sensitivity that such experiments should aim for in order to be competitive to present-day measurements of the neutron electric dipole moment in constraining the $P$- and $T$-odd two-nucleon interaction. While state-of-the-art techniques fall short by some three orders of magnitude for the neutron-proton case, specific neutron-nucleus experiments look promising, provided certain experimental and theoretical challenges are met.
description: 10 pages, 2 figures, accepted by Phys. Lett. B
Spaces of unbounded Fredholm operators: I. Homotopy equivalences
Creators: name: Prokhorova, Marina
Publisher: name: arXiv
Year: 2021
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Topology (math.AT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: This paper is devoted to the space of unbounded Fredholm operators equipped with the graph topology, the subspace of operators with compact resolvent, and their subspaces consisting of self-adjoint operators. Our main results are the following: (1) Natural maps between these four spaces and classical spaces of bounded operators representing K-theory are homotopy equivalences. This provides an alternative proof of a particular case of results of Joachim. (2) The subspace of unbounded essentially positive Fredholm operators represents odd K-theory. (3) The subspace of invertible operators in each of these spaces of unbounded operators is contractible.
description: v3: 28 pages; proof of Proposition 4.5 is corrected; proofs in Sections 5--7 are written in more details; Propositions 4.1, 6.1 and Lemmas 6.3, 7.1 are added; typos are corrected. To be published in the Journal of Topology and Analysis
Inter-adsorbate forces and coherent scattering in helium spin-echo experiments
Creators: name: Ward, David J.
name: Raghavan, Arjun
name: Tamtögl, Anton
name: Jardine, Andrew P.
name: Bahn, Emanuel
name: Ellis, John
name: Miret-Artés, Salvador
name: Allison, William
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In studies of dynamical systems, helium atoms scatter coherently from an ensemble of adsorbates as they diffuse on the surface. The results give information on the co-operative behaviour of interacting adsorbates and thus include the effects of both adsorbate-substrate and adsorbate-adsorbate interactions. Here, we discuss a method to disentangle the effects of interactions between adsorbates from those with the substrate. The result gives an approximation to observations that would be obtained if the scattering was incoherent. Information from the experiment can therefore be used to distinguish more clearly between long-range inter-adsorbate forces and the short range effects arising from the local lattice potential and associated thermal excitations. The method is discussed in the context of a system with strong inter-adsorbate interactions, sodium atoms diffusing on a copper (111) surface.
Akut Graft versus Host Hastalığı
Creators: name: Erkman Sanrı
Publisher: name: Zenodo
Year: 2019

description: Akut Graft vs. Host Hastalığı (GVHH); donör immun hücrelerin, konak (host) dokular üzerinde yarattığı reaksiyondur. Süreç; donörün aktive T hücrelerinin, inflamatuar bir kaskad ile konak epitelyal hücrelerine zarar vermesiyle oluşmaktadır. GVHH; allojenik hematopoietik kök hücre transplantasyonunun majör bir komplikasyonudur ve bu transplantasyonların %35-50’sinde görülür. Akut GVHH gelişen hastaların %50’sinde ise kronik GVHH gelişir1. Acil servislerde tanı koymak için öncelikle klinik şüphenin oluşması gerekir. Akut GVHH ‘nın etkilediği 3 ana doku: Deri, Karaciğer ve GİS ‘tir. Klinik şüphe; hematopoietik kök hücre transplantasyonu sonrasında gelişen dermatit (döküntü), kramp şeklinde karın ağrısı (diyare eşlik edebilir), ısrarlı bulantı-kusma ve hepatit (bilirubin ve Kc enzim yüksekliği ile) görülmesi ile oluşur. Semptomlar sıklıkla hematopoietik kök hücre transplantasyonunun gerçekleştiği ilk 100 günde görülür. Her ne kadar Akut GVHH klinik bir tanı olsa da bazen semptomları non-spesifik olabilir. Bu durumda histolojik konfirmasyon gerekebilir1,2.
Multi-wavelength signatures of magnetic reconnection of a flare associated coronal mass ejection
Creators: name: Joshi, Bhuwan
name: Manoharan, P. K.
name: Veronig, Astrid M.
name: Pant, P.
name: Pandey, Kavita
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The evolution of an X2.7 solar flare, that occurred in a complex $βγδ$ magnetic configuration region on 2003 November 3 is discussed utilizing a multi-wavelength data set. The very first signature of pre-flare coronal activity is observed in radio wavelengths as type III burst that occurred several minutes prior to the flare signature in H$α$. This type III is followed by the appearance of a looptop source in hard X-ray (HXR) images obtained from RHESSI. During the main phase of the event, H$α$ images observed from the solar tower telescope at ARIES, Nainital, reveal well-defined footpoint (FP) and looptop (LT) sources. As the flare evolves, the LT source moves upward and the separation between the two FP sources increases. The co-alignment of H$α$ with HXR images shows spatial correlation between H$α$ and HXR footpoints, while the rising LT source in HXR is always located above the LT source seen in H$α$. The evolution of LT and FP sources is consistent with the reconnection models of solar flares. The EUV images at 195 Å taken by SOHO/EIT reveal intense emission on the disk at the flaring region during the impulsive phase. Further, slow drifting type IV bursts, observed at low coronal heights at two time intervals along the flare period, indicate rising plasmoids or loop systems. The intense type II radio burst at time in between these type IV bursts, but at a relatively larger height indicates the onset of CME and its associated coronal shock wave. The study supports the standard CSHKP model of flares, which is consistent with nearly all eruptive flare models. More important, the results also contain evidence for breakout reconnection before the flare phase.
description: Accepted for publication in Solar Physics, to get figures with better resolution please write to Bhuwan Joshi (bhuwan.joshi@yahoo.com)
ABDULLA SHERNING PUBLITSISTIK FAOLIYATI VA UNING AHAMIYATI
Creators: name: Xamroyeva, Dilnoza
Publisher: name: Zenodo
Year: 2024

description: Abdulla Sher serqirra ijodkordir. U o‘zbek adabiyotida shoir, olim, publitsist, tarjimon sifatida tanildi. Uning publitsistikaga kirib kelishi, bu sohada ham yuksak o‘rinni egallagani, davriy nashrlar bilan bog‘liq faoliyati, o‘tkir publitsistik maqolalari haqida ushbu maqolada so‘z boradi.
title: Garlic :
title: Guidelines for the Conduct of Tests for Distinctness, Uniformity and Stability.
titleType: Subtitle
Creators: name: International Union For The Protection Of New Varieties Of Plants,
Publisher: name: International Union for the Protection of New Varieties of Plants,
Year: 0
Subjects: Garlic
Group identity.
New Varieties of Plants
Japanese Bunching Onions

description: The purpose of these guidelines (“Test Guidelines”) is to elaborate the principles contained in the General Introduction (document TG/1/3), and its associated TGP documents, into detailed practical guidance for the harmonized examination of distinctness, uniformity and stability (DUS) and, in particular, to identify appropriate characteristics for the examination of DUS and production of harmonized variety descriptions.