cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ενδοθηλιακή δυσλειτουργία σε ασθενείς με καρδιαγγειακά νοσήματα: ο ρόλος του μονοξειδίου του αζώτου
Creators: name: Τζιόμαλος, Κωνσταντίνος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Μονοξείδιο του Αζώτου
Πολυμορφισμός
Nitric oxide
Polymorphism

description: Σκοπός η διερεύνηση της σημασίας της ενδοθηλιακής δυσλειτουργίας στην εμφάνιση των καρδιαγγειακών νοσημάτων και της σχέσης τηε ενδοθηλιακής δυσλειτουργίας με την αρτηριακή υπέρταση. Ασθενείς και μέθοδοι : Μελετήθηκαν ασθενείς με οξύ έμφραγμα του μυοκαρδίου(ΟΕΜ), ή με οξύ ισχαιμικό αγγειακό εγκεφαλικό επεισόδιο(ΑΕΕ), ή με αρτηριακή υπέρταση. Την ομάδα ελέγχου αποτέλεσαν άτομα αντίστοιχης ηλικίας με τους ασθενείς που δεν είχαν αρτηριακή υπέρταση ή ατομικό αναμνηστικό στεφανιαίας νόσου ή ΕΕΕ. Η ενδοθηλιακή λειτουργία εκτιμήθηκε με προσδιορισμό της συγκέντρωσης των sICAM-1 και sVCAM-1 στο πλάσμα και της απέκκρισης λευκωματίνης στα ούρα. Επίσης, ελέχθηκε ο πολυμορφισμός G894T του γονιδίου της ενδοθηλιακής συνθετάσης του μονοξειδίου του αζώτου. Αποτελέσματα : μελετήθηκαν 72 αθενείς(45 άνδρες και 27 γυναίκες, με ηλικία 67+-10,9 έτη) ενώ των ομάδα ελέγχου αποτέλεσαν 13 άτομα(4 άνδρες και 9 γυναίκες, με ηλικάι 66,4+-9,4 έτη). Η συχνότητα του αλληλίου Τ στους ασθενείς με ΑΕΕ και στους ασθενείς με αρτηριακή υπέρταση δεν διέφερε από τη συχνότητά του στην ομάδα ελέγχου(ρ=0,460 και ρ=0,860 αντίστοιχα). Συμπεράσματα : τα ευρήματα της παρούσας μελέτης επιβεβαιώνουν τον κεντρικό ρόλο του μονοξειδίου του αζώτου και της ενδοθηλιακής δυσλειτουργίας στην παθογένεση των καρδιαγγειακών νοσημάτων και την σημασία της αρτηριακής υπέρτασης στην πρόκληση ενδοθηλιακής δυσλειτουργίας
description: Aim : to evaluate the role of endothelial dusfunction in the pathogenesis of cardiovascular diseases and the relationship between endothelial dysfunction and hypertension. Patients and methods : Patients with either acute myocardial infarction(AMI), acute ischemic stroke, or hypertension were included in this study. Age-matched patients without hypertension, coronary artery disease or past stroke served as controls. Endothelial dysfunction was assessed by determining sIAM-1 and sVCAM-1 serum concentration and urinary albumin excretion. We also determined the G894T polymorphism of the endothelial nitric oxide synthase gene. Results : seventy-two patients(45 males and 27 females, with a mean age of 67.9+-10.9 years) and 13 controls(4 males and 9 females, with a mean age of 66.4+-9.4 years) were studied. T allele frequency was significantly higher in patients with AMI(n=31) compared to controls(p=0.0049). Patients with ischemic stroke(n=18) and patients with hypertension(n=23) had increased urinary albumin excretion compared to controls(p=0.0049 and p=0.012, respectively). T allele frequency did not differ significantly between patients with ischemic stroke or patients with hypertension compared to controls(p=0.460 and p=0.860, respectively). Conclusion : our findings confirm the critical role of nitric oxide and the causal role of hypertension in the development of endothelial dysfunction
BPS Limit of Multi- D- and DF-strings in Boundary String Field Theory
Creators: name: Go, Gyungchoon
name: Ishida, Akira
name: Kim, Yoonbai
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A BPS limit is systematically derived for straight multi- D- and DF-strings from the D3D3bar system in the context of boundary superstring field theory. The BPS limit is obtained in the limit of thin D(F)-strings, where the Bogomolnyi equation supports singular static multi-D(F)-string solutions. For the BPS multi-string configurations with arbitrary separations, BPS sum rule is fulfilled under a Gaussian type tachyon potential and reproduces exactly the descent relation. For the DF-strings ((p,q)-strings), the distribution of fundamental string charge density coincides with its energy density and the Hamiltonian density takes the BPS formula of square-root form.
description: 14 pages, 1 figure
सर्प विष का उपचार और प्रबंधन
Creators: name: आशा1, स्पर्श दूबे2, पूजा3, रवि डबास4, प्रत्यांशु श्रीवास्तव5
Publisher: name: veterinary today
Year: 2024

description: सारांश: सांप का विष एक जटिल और घातक जैविक मिश्रण है, जो शिकार को निष्क्रिय करने और पचाने में सहायक होता है। विष दो मुख्य प्रकार के होते हैं: हेमोटॉक्सिन, जो रक्त को प्रभावित करता है, और न्यूरोटॉक्सिन, जो तंत्रिका तंत्र को प्रभावित करता है। विष का चिकित्सीय उपयोग एंटीवेनम के रूप में होता है, जो साँप के काटने के उपचार में सहायक होता है। इसके अतिरिक्त, विष से हृदय रोग, उच्च रक्तचाप, और रक्त विकारों के इलाज के लिए दवाइयाँ भी बनाई जाती हैं, जैसे कैप्टोप्रिल और एप्टिफिबाटाइड। भारत में हर साल सांप के काटने से लगभग 49,900 मौतें होती हैं, जो कि विश्व में सबसे अधिक है। साँप के काटने के बाद प्राथमिक चिकित्सा और एंटीवेनम थेरेपी जीवनरक्षक हो सकती हैं। भारत में साँपों जैसे कि कोबरा, क्रेट, रसेल्स वाइपर, और सॉ-स्केल्ड वाइपर के उपचार के लिए विशेष बहुविषाक्त एंटीवेनम उपलब्ध है। सही देखभाल, सावधानी और चिकित्सा उपचार से साँप के काटने से होने वाली मृत्यु और गंभीरता को रोका जा सकता है।
World - Systems Analysis
Creators: name: Wallerstein, Immanuel
name: Komlosy, Andrea
name: Landsteiner, Erich
Publisher: name: Österreichische Zeitschrift für Geschichtswissenschaften
Year: 2001

description: Österreichische Zeitschrift für Geschichtswissenschaften, Bd. 12 Nr. 2 (2001): Klima Geschichten
Aspects of cosmological expansion in F(R) gravity models
Creators: name: Appleby, S. A.
name: Battye, R. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study cosmological expansion in F(R) gravity using the trace of the field equations. High frequency oscillations in the Ricci scalar, whose amplitude increase as one evolves backward in time, have been predicted in recent works. We show that the approximations used to derive this result very quickly breakdown in any realistic model due to the non-linear nature of the underlying problem. Using a combination of numerical and semi-analytic techniques, we study a range of models which are otherwise devoid of known pathologies. We find that high frequency asymmetric oscillations and a singularity at finite time appear to be present for a wide range of initial conditions. We show that this singularity can be avoided with a certain range of initial conditions, which we find by evolving the models forwards in time. In addition we show that the oscillations in the Ricci scalar are highly suppressed in the Hubble parameter and scale factor.
description: Minor typos corrected, references updated, accepted for publication in JCAP
Η επίδραση του αντινεοπλασματικού χημειοθεραπευτικού Capecitabine στις αναστομώσεις του παχέος εντέρου: πειραματική μελέτη σε επίμυες
Creators: name: Κωνσταντινίδης, Χαρίλαος Δ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Επούλωση αναστομώσεων
Capecitabine
Healing of anastomoses

description: Η Capecitabine είναι πρόδρομος της 5-φλουοροουρακίλης. Μελετήσαμε την επίδραση της στην επούλωση των αναστομώσεων του παχέος εντέρου επίμυων. Χρησιμοποιήθηκαν 60 επίμυες. 30 εξ αυτών(ομάδα ελέγχου) έλαβαν capecitabine κατά την περιεγχερητική περίοδο κολεκτομής, ενώ άλλο 30(ομάδα μάρτυρα) αγωγή placebo. Τα πειραματόζωα, μάρτυρες και ομάδα ελέγχου, θυσιάστηκαν σε ομάδες των 10 την 3η, 7η και 14η μετεγχειρητική ημέρα. Δε διαπιστώθηκε αρνητική επίδραση στην επούλωση των αναστομώσεων από τη χορήγηση capecitabine. Η μέση πίεση διάσπασης των αναστομώσεων βρέθηκε υψηλοτερη στην ομάδα ελέγχου απότι στην ομάδα μάρτυρα κατά την πρώτη θυσία. Συμπερασματικά, η περιεγχειρητικά χορήγηση capecitabine δεν επηρεάζει αρνητικά την επούλωση και τη μηχανική αντοχή των αναστομώσεων του παχέος εντέρου στους επίμυες
description: Capecitabine is a prodrug of s-flouorouracil. We studied the impact of capecitabine on the healing of colonic anastomoses in rats. 30 rats recieved capecitabine period relatevly during colectomy and anastomosis. 30 rats received placebo. The animals were killed in groups of 10 on the 3rd, 7th and 14th postoperative day. We found no negative impact on colonic healing after capecitabine administration. median bursting pressure was found statisticaly significant higher in rats which recieved capecitabine on the third postoperative day. In conclusion, capecitabine administration does not have negative impact on colonic anastomotic healing in rats
Existence and uniqueness of solution for multidimensional parabolic PDAEs arising in semiconductor modeling
Creators: name: Alì, Giuseppe
name: Rotundo, Nella
Publisher: name: Weierstrass Institute
Year: 2019
Subjects: subject: Existence and uniqueness of solution
subject: multidimensional parabolic PDAEs
subject: network and semiconductor coupling model
subject: 35K40
subject: 35K55
subject: 35K51
subject: 82D37
subject: 94C05

description: This paper concerns with a compact network model combined with distributed models for semiconductor devices. For linear RLC networks containing distributed semiconductor devices, we construct a mathematical model that joins the differential-algebraic initial value problem for the electric circuit with multi-dimensional parabolic-elliptic boundary value problems for the devices. We prove an existence and uniqueness result, and the asymptotic behavior of this mixed initial boundary value problem of partial differential-algebraic equations.
The Metallicity of Stars with Close Companions
Creators: name: Grether, Daniel
name: Lineweaver, Charles H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examine the relationship between the frequency of close companions (stellar and planetary companions with orbital periods < 5 years) and the metallicity of their Sun-like (~ FGK) hosts. We confirm and quantify a ~4 sigma positive correlation between host metallicity and planetary companions. We find little or no dependence on spectral type or distance in this correlation. In contrast to the metallicity dependence of planetary companions, stellar companions tend to be more abundant around low metallicity hosts. At the ~2 sigma level we find an anti-correlation between host metallicity and the presence of a stellar companion. Upon dividing our sample into FG and K sub-samples, we find a negligible anti-correlation in the FG sub-sample and a 3 sigma anti-correlation in the K sub-sample. A kinematic analysis suggests that this anti-correlation is produced by a combination of low-metallicity, high-binarity thick disk stars and higher-metallicity, lower-binarity thin disk stars.
description: Conforms to version accepted by ApJ. 15 pages formatted with emulateapj.cls
A finite element analysis model to predict and optimize the mechanical behaviour of bioprinted scaffolds
Creators: name: Banerjee, Abhinaba
name: Datta, Sudipto
name: Chowdhury, Amit Roy
name: Datta, Pallab
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Bioprinting is an enabling biofabrication technique to create heterogeneous tissue constructs according to patient-specific geometries and compositions. Optimization of bioinks as per requirements for specific tissue applications is a critical exercise in ensuring clinical translation of the bioprinting technologies. Most notably, optimum hydrogel polymer concentrations are required to ensure adequate mechanical properties of bioprinted constructs without causing significant shear stresses on cells. However, experimental iterations are often tedious for optimizing the bioink properties. In this work, a finite element modelling approach has been undertaken to determine the effect of different bioink parameters like composition, concentration on the range of stresses being experienced by the cells in a bioprinting process. The stress distribution of the cells at different parts of the constructs has also been modelled. It is found that both bioink chemical compositions and stoichiometric concentrations can substantially alter the stress effects experienced by the cells. Similarly, concentrated regions of soft cells near the pore regions were found to increase stress concentrations by almost three times compared to the Von-Mises stress generated around the region of cells away from the pores. The study outlines the importance of finite element models in the rapid development of bioinks.
description: 21 pages, 10 figures
Cell-Laden alginate biomaterial modelling using three-dimensional (3D) microscale finite element technique
Creators: name: Banerjee, Abhinaba
name: Datta, Sudipto
name: Chowdhury, Amit Roy
name: Datta, Pallab
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A novel modelling technique using finite element analysis to mimic the mechanoresponse of cell-laden biomaterial is proposed for the use in bioinks and other tissue engineering applications. Here a hydrogel-based composite biomaterial specimen was used consisting of 5% (V/V) HeLa cells added to alginate solution (4% W/V) and another specimen with no living cell present in alginate solution (4% W/V). Tensile test experiments were performed on both the specimens with a load cell of 25 N. The specimens were bioprinted using an in-house developed three-dimensional (3D) bioprinter. To allow for the nonlinear hyperelastic behavior of the specimen, the specimens were loaded very slowly, at rates of 0.1 mm/min and 0.5 mm/min, during the tensile test. The microscale finite element models developed in Ansys were loaded with similar load rates and their responses were recorded. Both the model results were validated with the experiment results. A very good agreement between the finite element model and the tensile test experiment was observed under the same mechanical stimuli. Hence, the study reveals that bioprinted scaffold can be virtually modeled to obtain its mechanical characteristics beforehand.
description: 4 pages, 7 figures
Inferring the Geometric Nullspace of Robot Skills from Human Demonstrations
Creators: name: Cai, Caixia
name: Liang, Ying Siu
name: Somani, Nikhil
name: Yan, Wu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper we present a framework to learn skills from human demonstrations in the form of geometric nullspaces, which can be executed using a robot. We collect data of human demonstrations, fit geometric nullspaces to them, and also infer their corresponding geometric constraint models. These geometric constraints provide a powerful mathematical model as well as an intuitive representation of the skill in terms of the involved objects. To execute the skill using a robot, we combine this geometric skill description with the robot's kinematics and other environmental constraints, from which poses can be sampled for the robot's execution. The result of our framework is a system that takes the human demonstrations as input, learns the underlying skill model, and executes the learnt skill with different robots in different dynamic environments. We evaluate our approach on a simulated industrial robot, and execute the final task on the iCub humanoid robot.
description: 8 pages, 6 figures, ICRA 2020
Casimir-Lifshitz force out of thermal equilibrium and asymptotic non-additivity
Creators: name: Antezza, Mauro
name: Pitaevskii, Lev P.
name: Stringari, Sandro
name: Svetovoy, Vitaly B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the force acting between two parallel plates held at different temperatures. The force reproduces, as limiting cases, the well known Casimir-Lifshitz surface-surface force at thermal equilibrium and the surface-atom force out of thermal equilibrium recently derived by M. Antezza \emph{et al.}, Phys. Rev. Lett. {\bf 95}, 113202 (2005). The asymptotic behavior of the force at large distances is explicitly discussed. In particular when one of the two bodies is a rarefied gas the force is not additive, being proportional to the square root of the density. Nontrivial cross-over regions at large distances are also identified.
description: 4 pages, 2 figures. Published version, revised and more detailed
Kramers-Kronig relations for plasma-like permittivities and the Casimir force
Creators: name: Klimchitskaya, G. L.
name: Mohideen, U.
name: Mostepanenko, V. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Kramers-Kronig relations are derived for the permittivity of the usual plasma model which neglects dissipation and of a generalized model which takes into account the interband transitions. The generalized plasma model is shown to be consistent with all precision experiments on the measurement of the Casimir force.
description: 9 pages, 2 figures, 1 table; to appear in J. Phys. A: Math. Theor. (fast track communication)
Studies of b-hadrons at LHCb
Creators: name: Matiunin, Viacheslav
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A large data set collected at the LHCb experiment in proton-proton collisions during Runs 1 and 2 of the Large Hadron Collider has opened a unique possibility to study heavy beauty hadron states and to broaden knowledge of their spectroscopy and production. Recent results on searches for new excited $\mathrm{b}$-hadron states, and studies of $\mathrm{b}$-hadron production, are reviewed. In particular, the observation of new excited $Ω^-_{\mathrm{b}}$ states, the observation of two new narrow $Λ_{\mathrm{b}}(6146)^0$ and $Λ_{\mathrm{b}}(6152)^0$ states, the observation of new $Λ_{\mathrm{b}}^{**0}$ state consistent with the $Λ_{\mathrm{b}}(2\mathrm{S})^0$ prediction, a precise measurement of the mass and width of $Λ_{\mathrm{b}}(5912)^0$ and $Λ_{\mathrm{b}}(5920)^0$ states, and a measurement of the $\mathrm{B}_{\mathrm{c}}^-$ meson production fraction and $\mathrm{B}_{\mathrm{c}}^--\mathrm{B}_{\mathrm{c}}^+$ production asymmetry in 7 and 13 TeV of proton-proton collisions are presented.
description: Talk at the 40th International Conference on High Energy Physics, Prague, Czech Republic, 28 July - 6 August 2020
Star Counts in the Globular Cluster Omega Centauri. I. Bright Stellar Components
Creators: name: Castellani, V.
name: Calamida, A.
name: Bono, G.
name: Stetson, P. B.
name: Freyhammer, L. M.
name: Degl'Innocenti, S.
name: Moroni, P. Prada
name: Monelli, M.
name: Corsi, C. E.
name: Nonino, M.
name: coauthors, 10
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an extensive photometry on HB, RGB, and MSTO stars in Omega Cen. The central regions of the cluster were covered with a mosaic of F435W, F625W, and F658N-band data collected with ACS/HST. The outer reaches were covered with a large set of U,B,V,I-band data collected with the WFI@2.2m ESO/MPI telescope. The final catalogue includes ~1.7 million stars. We identified ~3,200 likely HB stars and ~12,500 stars brighter than the subgiant branch and fainter than the RGB bumps. The HB morphology changes with the radial distance. The relative number of extreme HB stars decreases from ~30% to ~21% when moving from the center toward the outer regions of the cluster, while the fraction of less hot HB stars increases from ~62% to ~72%. We performed a detailed comparison between observed ratios of different stellar tracers and predictions based on canonical evolutionary models with a primordial helium (Y=0.23) content and metal abundances (Z=0.0002,0.001) that bracket the observed spread in metallicity of Omega Cen stars. We found that the empirical star counts of HB stars are on average larger (30%-40%) than predicted. Moreover, the rate of HB stars is 43% larger than the MSTO rate. The discrepancy between the rate of HB compared with the rate of RG and MSTO stars supports the evidence that we are facing a true excess of HB stars. The same comparison was performed by assuming a mix of stellar populations made with 70% of canonical stars and 30% of He-enhanced stars. The discrepancy between theory and observations decreases by a factor of two when compared with rates predicted by canonical He content models, but still 15%-25% (Y=0.42) and 15%-20% (Y=0.33) higher than observed. Furthermore, the ratio between HB and MSTO star counts are ~24% (Y=0.42) and 30% (Y=0.33) larger than predicted lifetime ratios.
description: 54 pages, 17 figures,to be published in ApJ, see link at http://stellari.wiki.zoho.com
Rural Land Transfer Survey: Preliminary Report
Creators: name: Bernat, G. Andrew
name: Bernat, G. Andrew
Publisher: name: Unknown
Year: 1988
Subjects: Land Economics/Use

description: The majority of rural land transfers--that is, when the ownership of a parcel of land changes hands--in 1985-86 were arm’s length sales. While arm's length sales accounted for most of the acres transferred, these tracts were half the size of tracts sold to relatives and a fourth the size of tracts sold in distress sales or foreclosures. Land transfers caused little change in rural land use; most land remains in agricultural use. Most new owners of transferred land were husband and wife and worked in occupations unrelated to farming.
The Homogeneous Scalar Field and the Wet Dark Sides of the Universe
Creators: name: Diez-Tejedor, Alberto
name: Feinstein, Alexander
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the possibility that a generalised real scalar field minimally coupled to gravity could explain both the galactic and the cosmological dark components of the universe. Within the framework of Einstein's Relativity we model static galactic halos by considering the most general action built from the scalar field and its first derivatives. Although the gravitational configuration is static, the scalar field may be either static, or homogeneous and linear in time. In the case of the static scalar field, the models we look at inevitably posses unphysical negative energies, and we are led to a sort of no-go result. In the case of the homogeneous scalar field, on the contrary, we find that compact objects with flat rotational curves and with the mass and the size of a typical galaxy can be successfully modeled and the Tully-Fisher relation recovered. We further show that the homogeneous scalar field deduced from the galactic halo spacetimes has an action compatible with the kinetic Unified Dark Matter models recently proposed by Scherrer. Therefore, such a homogeneous kinetic Unified Dark Matter not only may correctly mimic the galactic dynamics, but could also be used to model the present-day accelerated expansion in the universe.
description: Minor cahanges, some misprints corrected. References added. Matches the print version. To appear in Phys. Rev. D
Domain Wall Fermions on the Brane
Creators: name: Rojas, Jesus Cruz
name: Evans, Nick
name: Mitchell, Jack
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study domain wall fermions and their condensation in the D3/probe D7 system. A spatially dependent mass term for the N=2 hypermultiplet can be arranged to isolate distinct two component fermions on two 2+1 dimensional domain walls. We argue that the system shows condensation/mass generation analogous to the D3/probe D5 anti-D5 system. The chiral condensate and pion mass can be directly computed on the domain wall. We provide evidence that these systems with the domains separated by a width w have a bare (current) quark mass that scales as 1/w when the spatial dependent mass is large. Adding a magnetic field does not induce chiral symmetry breaking between the separated domain wall fermions, but a similar phenomenological dilaton factor can be made strong enough to introduce spontaneous symmetry breaking. We show a Gell-Man-Oakes-Renner relation for the pions in that case and also for the case where the D7 probe is in a back-reacted dilaton flow geometry. The vacuum configurations can also be interpreted as having a spontaneously generated mass by a Nambu-Jona-Lasinio four fermion operator, depending on the choice of boundary conditions on fluctuations, according to Witten's multi-trace prescription.
description: 15 pages, 12 figures
Thibaut de Champagne Chansons d'amour: étude et traduction
Creators: name: Sampson, Glenn Stuart
Publisher: name: University of British Columbia
Year: 2011

description: Cette thèse sur Thibaut de Champagne se répartit en trois sections. Nous présentons d'abord un «état présent»: sommaire et commentaires de tous les ouvrages disponibles sur son ceuvre. Dans la deuxième partie, nous cherchons à élaborer les bases d'une étude ultérieure d'une «ars poetica» thibaldienne, c'est-à-dire d'une part l'ensemble de principes et de pratiques poético-stylistiques prônés et employés par Thibaut de Champagne dans ses chansons d'amour, d'autre part ceux récuses par lui, et done absents de ses ceuvres. L'elaboration de cette «ars poetica» comprend une esquisse des notions suivantes: l'inspiration poétique; la finalité de l'écriture poétique; la «matière propre» aux genres pratiqués par Thibaut de Champagne. Nous croyons également qu'il serait possible, du moins en théorie, de rétablir une certaine chronologie de composition des chansons d'amour de Thibaut de Champagne. Nous relevons de la seule édition disponible des lyriques, celle de A. Wallensköld, les données philologiques qui, secondées des datations plus ou moins fermes proposées par Wallensköld, risquent de permettre l'élaboration d'une nouvelle édition des lyriques de Thibaut de Champagne, basée sur un ordre chronologique de ses chansons. Finalement nous présentons, après une explication des principes de démarche observés et appliqués, une traduction en franc̡ais moderne des trente-six chansons d'amour de Thibaut de Champagne.
Rank abundance relations in evolutionary dynamics of random replicators
Creators: name: Yoshino, Yoshimi
name: Galla, Tobias
name: Tokita, Kei
Publisher: name: arXiv
Year: 2008
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: We present a non-equilibrium statistical mechanics description of rank abundance relations (RAR) in random community models of ecology. Specifically, we study a multi-species replicator system with quenched random interaction matrices. We here consider symmetric interactions as well as asymmetric and anti-symmetric cases. RARs are obtained analytically via a generating functional analysis, describing fixed-point states of the system in terms of a small set of order parameters, and in dependence on the symmetry or otherwise of interactions and on the productivity of the community. Our work is an extension of Tokita [Phys. Rev. Lett. {\bf 93} 178102 (2004)], where the case of symmetric interactions was considered within an equilibrium setup. The species abundance distribution in our model come out as truncated normal distributions or transformations thereof and, in some case, are similar to left-skewed distributions observed in ecology. We also discuss the interaction structure of the resulting food-web of stable species at stationarity, cases of heterogeneous co-operation pressures as well as effects of finite system size and of higher-order interactions.
description: 12 pages, 14 figures; text amended, minor corrections/modifications to figures
The convective envelope in gamma Doradus stars: theoretical uncertainties
Creators: name: Montalban, J.
name: Miglio, A.
name: Theado, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The depth of the convective envelope plays a fundamental role in the driving mechanism proposed by Guzik et al. (2000) to explain the high-order g modes of gamma Dor pulsators. In this poster we study the sensitivity of the convective envelope depth to the description of convective transport, to relevant physical processes, such as microscopic diffusion, and to other uncertainties in theoretical stellar models.
description: 2 pags. 1 fig. Poster in Vienna Workshop on the Future of Asteroseismology, September 20-22, 2006. To be published by CoAst
Gaia EDR3 Parallax Zero-point Offset based on W Ursae Majoris-type Eclipsing Binaries
Creators: name: Ren, Fangzhou
name: Chen, Xiaodian
name: Zhang, Huawei
name: de Grijs, Richard
name: Deng, Licai
name: Huang, Yang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We independently determine the zero-point offset of the Gaia early Data Release-3 (EDR3) parallaxes based on $\sim 110,000$ W Ursae Majoris (EW)-type eclipsing binary systems. EWs cover almost the entire sky and are characterized by a relatively complete coverage in magnitude and color. They are an excellent proxy for Galactic main-sequence stars. We derive a $W1$-band Period-Luminosity relation with a distance accuracy of $7.4\%$, which we use to anchor the Gaia parallax zero-point. The final, global parallax offsets are $-28.6\pm0.6$ $μ$as and $-25.4\pm4.0$ $μ$as (before correction) and $4.2\pm0.5$ $μ$as and $4.6\pm3.7$ $μ$as (after correction) for the five- and six-parameter solutions, respectively. The total systematic uncertainty is $1.8$ $μ$as. The spatial distribution of the parallax offsets shows that the bias in the corrected Gaia EDR3 parallaxes is less than 10 $μ$as across $40\%$ of the sky. Only $15\%$ of the sky is characterized by a parallax offset greater than 30 $μ$as. Thus, we have provided independent evidence that the parallax zero-point correction provided by the Gaia team significantly reduces the prevailing bias. Combined with literature data, we find that the overall Gaia EDR3 parallax offsets for Galactic stars are $[-20, -30]$ $μ$as and 4-10 $μ$as, respectively, before and after correction. For specific regions, an additional deviation of about 10 $μ$as is found.
description: 7 pages, 4 figures. Accepted for publication in The Astrophysical Journal Letters
On the spectra of carbon nano-structures
Creators: name: Kuchment, Peter
name: Post, Olaf
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 92E10, 05C90, 58J50, 58J90, 81V99, 94C15

description: An explicit derivation of dispersion relations and spectra for periodic Schrödinger operators on carbon nano-structures (including graphen and all types of single-wall nano-tubes) is provided.
description: 25 pages, 7 figures
Stochastic differential equation approach to understanding the population control bias in full configuration interaction quantum Monte Carlo
Creators: name: Brand, Joachim
name: Yang, Mingrui
name: Pahl, Elke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We investigate a systematic statistical bias found in full configuration quantum Monte Carlo (FCIQMC) that originates from controlling a walker population with a fluctuating shift parameter. This bias can become the dominant error when the sign problem is absent, e.g. in bosonic systems. FCIQMC is a powerful statistical method for obtaining information about the ground state of a sparse and abstract matrix. We show that, when the sign problem is absent, the shift estimator has the nice property of providing an upper bound for the exact ground state energy and all projected energy estimators, while a variational estimator is still an upper bound to the exact energy with substantially reduced bias. A scalar model of the general FCIQMC population dynamics leads to an exactly solvable Itô stochastic differential equation. It provides further insights into the nature of the bias and gives accurate analytical predictions for delayed cross-covariance and auto-covariance functions of the shift energy estimator and the walker number. The model provides a toe-hold on finding a cure for the population control bias. We provide evidence for non-universal power-law scaling of the population control bias with walker number in the Bose-Hubbard model for various estimators of the ground state energy based on the shift or on projected energies. For the specific case of the non-interacting Bose-Hubbard Hamiltonian we obtain a full analytical prediction for the bias of the shift energy estimator.
description: 24 pages, 14 figures; fixed typo in Eq. (72)
Inclusive Lambda_c Production in e^+e^- Annihilations at sqrt{s}=10.54 GeV and in Upsilon(4S) Decays
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present measurements of the total production rates and momentum distributions of the charmed baryon $Λ_c^+$ in $e^+e^- \to$ hadrons at a center-of-mass energy of 10.54 GeV and in $Υ(4S)$ decays. In hadronic events at 10.54 GeV, charmed hadrons are almost exclusively leading particles in $e^+e^- \to c\bar{c}$ events, allowing direct studies of $c$-quark fragmentation. We measure a momentum distribution for $Λ_c^+$ baryons that differs significantly from those measured previously for charmed mesons. Comparing with a number of models, we find none that can describe the distribution completely. We measure an average scaled momentum of $\left< x_p \right> = 0.574\pm$0.009 and a total rate of $N_{Λc}^{q\bar{q}} = 0.057\pm$0.002(exp.)$\pm$0.015(BF) $Λ_c^+$ per hadronic event, where the experimental error is much smaller than that due to the branching fraction into the reconstructed decay mode, $pK^-π^+$. In $Υ(4S)$ decays we measure a total rate of $N_{Λc}^Υ = 0.091\pm$0.006(exp.)$\pm$0.024(BF) per $Υ(4S)$ decay, and find a much softer momentum distribution than expected from B decays into a $Λ_c^+$ plus an antinucleon and one to three pions.
description: 16 pages, 10 postscript figues, version published in Phys. Rev. D with minor changes to text and some figs
Polymeric filament thinning and breakup in microchannels
Creators: name: Arratia, P. E.
name: Gollub, J. P.
name: Durian, D. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The effects of elasticity on filament thinning and breakup are investigated in microchannel cross flow. When a viscous solution is stretched by an external immiscible fluid, a low 100 ppm polymer concentration strongly affects the breakup process, compared to the Newtonian case. Qualitatively, polymeric filaments show much slower evolution, and their morphology features multiple connected drops. Measurements of filament thickness show two main temporal regimes: flow- and capillary-driven. At early times both polymeric and Newtonian fluids are flow-driven, and filament thinning is exponential. At later times, Newtonian filament thinning crosses over to a capillary-driven regime, in which the decay is algebraic. By contrast, the polymeric fluid first crosses over to a second type of flow-driven behavior, in which viscoelastic stresses inside the filament become important and the decay is again exponential. Finally, the polymeric filament becomes capillary-driven at late times with algebraic decay. We show that the exponential flow thinning behavior allows a novel measurement of the extensional viscosities of both Newtonian and polymeric fluids.
description: 7 pages, 7 figures
Sliding and translational diffusion of molecular phases confined into nanotubes
Creators: name: Busselez, Rémi
name: Ecolivet, Claude
name: Guégan, Régis
name: Lefort, Ronan
name: Morineau, Denis
name: Toudic, Bertrand
name: Guendouz, Mohammed
name: Affouard, Frédéric
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The remaining dynamical degrees of freedom of molecular fluids confined into capillaries of nano to sub-nanometer diameter are of fundamental relevance for future developments in the field of nanofluidics. These properties cannot be simply deduced from the bulk one since the derivation of macroscopic hydrodynamics most usually breaks down in nanoporous channels and additional effects have to be considered. In the present contribution, we review some general phenomena, which are expected to occur when manipulating fluids under confinement and ultraconfinement conditions.
description: 17 pages, 8 figs
Empowering Target Identification at Glaxo Smith Kline
Creators: name: Dall'Olio, Giovanni
Publisher: name: Apollo - University of Cambridge Repository
Year: 2017

description: Giovanni M Dall'Olio, discusses employing a data strategy to empower target identification at GSK. Lightning talk delivered at the Engaging Researchers with Good Data Management event held at St Catharine's College, Cambridge on the 15th of November 2017.
Structural approach to unambiguous discrimination of two mixed quantum states
Creators: name: Kleinmann, M.
name: Kampermann, H.
name: Bruss, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the optimal unambiguous discrimination of two arbitrary mixed quantum states. We show that the optimal measurement is unique and we present this optimal measurement for the case where the rank of the density operator of one of the states is at most 2 ("solution in 4 dimensions"). The solution is illustrated by some examples. The optimality conditions proved by Eldar et al. [Phys. Rev. A 69, 062318 (2004)] are simplified to an operational form. As an application we present optimality conditions for the measurement, when only one of the two states is detected. The current status of optimal unambiguous state discrimination is summarized via a general strategy.
description: 33 pages, 3 figures, minor corrections
Precision Determination of $|V_{ub}|$
Creators: name: Paz, Gil
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The last two years have seen an impressive improvement in the determination of $|V_{ub}|$, especially from inclusive decays. The error on $|V_{ub}|$ measured with inclusive decays was reduced from 18% (PDG 2004) to 8% (PDG 2006). This progress is a result of combined experimental and theoretical efforts. In this talk, the theoretical framework (BLNP) that enabled such progress is reviewed, as well as other approaches to an inclusive determination of $|V_{ub}|$ (DGE, $M_X-q^2$ etc.). The prospects of improving $|V_{ub}|$ are discussed, addressing issues of weak annihilation, implications of leptonic B decays, and determination of $|V_{ub}|$ with exclusive decays.
description: Invited talk at International Conference on B-Physics at Hadron Machines (Beauty 2006), Oxford, England, 25-29 Sep 2006
Non-Universal Spectra of Ultra-High Energy Cosmic Ray Primaries and Secondaries in a Structured Universe
Creators: name: Sigl, Guenter
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Analytical calculations of extra-galactic cosmic ray spectra above ~10^17 eV are often performed assuming continuous source distributions, giving rise to spectra that depend little on the propagation mode, be it rectilinear or diffusive. We perform trajectory simulations for proton primaries in the probably more realistic case of discrete sources with a density of ~10^-5/Mpc^3. We find two considerable non-universal effects that depend on source distributions and magnetic fields: First, the primary extra-galactic cosmic ray flux can become strongly suppressed below a few 10^18 eV due to partial confinement in magnetic fields surrounding sources. Second, the secondary photon to primary cosmic ray flux ratio between ~3x10^18 eV and ~10^20 eV decreases with decreasing source density and increasing magnetization. As a consequence, in acceleration scenarios for the origin of highest energy cosmic rays the fraction of secondary photons may be difficult to detect even for experiments such as Pierre Auger. The cosmogenic neutrino flux does not significantly depend on source density and magnetization.
description: 9 revtex pages, 9 figures, published version, minor changes
Δυναμική προσομοίωση αντιδραστήρων ρευστορεάς κλίνης παραγωγής πολυολεφίνων: πρόβλεψη της κατανομής των πολυμερικών σωματιδίων
Creators: name: Δομπάζης, Γεώργιος Α.
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Ρευστοαιώρηση
Μοντελοποίηση αντιδραστήρα
Συσσωμάτωση
Μοντέλο πολλαπλών ζωνών
Fluidization
Reactor modeling
Agglomeration studies
Multi-zone reactor model

description: Στην παρούσα εργασία αναπτύσσονται υπολογιστικά μοντέλα για τη μαθηματική προσομοίωση της λειτουργίας ετερογενών καταλυτικών αντριδραστήρων ρευστοστερεάς κλίνης, το οποίο αποτελεί συνδυασμό των μαθηματικών μοντέλων σε όλες τις κλίμακες μεγέθους. Οι κλίμακες αυτές είναι η μοριακή, η οποία αφορά τη μελέτη της κινητικής του καταλυτικού πολυμερισμού, η μεσοκλίμακα η οποία αφορά τα φαινόμενα κατά την ανάπτυξη ενός πολυμερικού σωματιδίου, η κλίμακα της μακροανάμιξης, η οποία αφορά τη συμπεριφορά του πληθυσμού των σωματιδίων και η μακροκλίμακα, η οποία αφορά τα φαινόμενα στο επίπεδο του αντιδραστήρα. Το μοντέλο αυτό αποτελεί το πιο ολοκληρωμένο που έχει αναπτυχθεί στη βιβλιογραφία για την περιγραφή των φαινομένων διαστρωμάτωσης και της δυναμικής απόκρισης του συστήματος. Η μελέτη των φαινομένων συσσωμάτωσης αποδείχτηκε πολύ σημαντική για τις κατανεμημένες μοριακές και μορφολογικές ιδιότητες του πολυμερικού προϊόντος
description: In the present study, mathematical models for the simulation of solid catalyzed olefin polymerization fluidized bed reactors are developed. A comprehensive multi-scale, multi-phase, multi-zone dynamic model is developed, which is a combination of all models at different length scales. These scales are the molecular scale which concerns the study of the kinetic mechanisms, the mesoscale which concerns the growth of asingle particle the macromixing scale which focuses on the population of polymery particles and the macroscale level which concerns the phenomenon taking place at the reactor level. This model is the most integrated for prediction of particle segregation phenomena in th bed aggregation phenomena in the bed revealed to be extremely important for the distributed molecula and morphological properties of the polymer product
Temporary topics : critical interpretations of the temporary work industry
Creators: name: Sparke, Matthew
Publisher: name: University of British Columbia
Year: 2011

description: In this thesis I critically examine the temporary work industry. I draw on a variety of materials including academic and journalistic writing, as, well as extensive interviews with temps and counsellors in Vancouver. Having begun by discussing the politics of my ethnography, I proceed to analyse the implications of how temping displaces and bears witness to the representation of labour as value in capitalism. I then interrogate how the equally "material" politics of gender serve to reproduce temping. Finally, in the last chapter, I make a set of arguments about how the industry intersects with the discourses of rationality operating in the disciplinary, legislative and unionised organisational regimes of modern employment.
Audit of Management Recommendations 1
Creators: name: Arias-Hansen, Juliana
name: Nguyen, Thong Tien
name: Gregersen, Olavur
name: Vidal, Duarte F.
name: Pérez, Rosa Chapela
name: Kvalvik, Ingrid
Publisher: name: Zenodo
Year: 2019
Subjects: SFPA - Sustainable Fisheries Partnership Agreements
CFP - Common Fisheries Policy
Fisheries management
Horizon 2020
Mauritania
Senegal
EU fleet
Cape Verde
Seychelles
High Seas
Socio-economics

description: The overarching objective of the FarFish project is to provide knowledge, tools and methods to support responsible, sustainable and profitable EU fisheries outside European waters, both within the jurisdiction of non-EU nations as well as international waters. To achieve this, FarFish aims to develop practical, achievable and cost-effective fisheries management tools and advice. Among those tools are user-friendly guidelines on how to create management recommendations (MRs) within these fisheries, which builds on the concepts of results-based management, where responsibility for fisheries management is to a point transferred to resource users, provided that they meet with necessary requirements set forth by the authorities. The FarFish project is designed to go through two iterations when designing and validating this approach, where first version guidelines for making MRs are developed, they are then tested by applying them to the FarFish CSs and the MRs are then audited by an independent third party. This report gives a summary of the audit in the first iteration. The audit will be used to improve the guidelines and ultimately the second version of the MRs. The audit builds on the Audit Framework developed in the FP7 project EcoFishMan. The audit aims to create a basis for improving the guidelines for making MRs, the MR invitations and the MRs developed in the next iteration of the project, through a planned, independent, and documented evaluation to determine whether the MR is being implemented as agreed. The role of the auditor is to evaluate whether the contract between the authority and the operator has been fulfilled, in the sense that the outcome targets listed in the MR have been achieved. In this first audit, the MR for each case study is audited ex-ante, focusing on measuring the results of the MR, based on the indicators set for each of the outcome targets Two tasks are performed by the auditor at this stage, to conform with the provided documentation system and if data is available, and conduct a sensitivity analysis to establish a baseline for the evaluation of the performance in the second version of the MR. All together the audit should provide a basis to improve and advance in the developed of the MRs in the next iteration of the FarFish project, enabling the operators to improve management goals and implementation strategies, tailoring management strategies to comply with policy requirements, while advancing their own objectives and making use of local knowledge and resources. Enabling responsive management with a clear documentation system and audit framework that allow for timely interventions and adaptive management.
Neutron scattering study of Kondo lattice antiferromagnet YbNiSi3
Creators: name: Kobayashi, Yuha
name: Onimaru, Takahiro
name: Avila, Marcos A.
name: Sasai, Kenzo
name: Soda, Minoru
name: Hirota, Kazuma
name: Takabatake, Toshiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The Kondo lattice antiferromagnet YbNiSi3 was investigated by neutron scattering. The magnetic structure of YbNiSi3 was determined by neutron diffraction on a single-crystalline sample. Inelastic scattering experiments were also performed on a pulverized sample to study the crystalline electric field (CEF) excitations. Two broad CEF excitations were observed, from which the CEF parameters were determined. The temperature dependence of the magnetic susceptibility chi and the magnetic specific heat Cmag were calculated using the determined CEF model, and compared with previous results.
description: 10 pages, 7 figures,submitted to JPSJ