cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lattice Boltzmann simulations of soft matter systems
Creators: name: Duenweg, Burkhard
name: Ladd, Anthony J. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This article concerns numerical simulations of the dynamics of particles immersed in a continuum solvent. As prototypical systems, we consider colloidal dispersions of spherical particles and solutions of uncharged polymers. After a brief explanation of the concept of hydrodynamic interactions, we give a general overview over the various simulation methods that have been developed to cope with the resulting computational problems. We then focus on the approach we have developed, which couples a system of particles to a lattice Boltzmann model representing the solvent degrees of freedom. The standard D3Q19 lattice Boltzmann model is derived and explained in depth, followed by a detailed discussion of complementary methods for the coupling of solvent and solute. Colloidal dispersions are best described in terms of extended particles with appropriate boundary conditions at the surfaces, while particles with internal degrees of freedom are easier to simulate as an arrangement of mass points with frictional coupling to the solvent. In both cases, particular care has been taken to simulate thermal fluctuations in a consistent way. The usefulness of this methodology is illustrated by studies from our own research, where the dynamics of colloidal and polymeric systems has been investigated in both equilibrium and nonequilibrium situations.
description: Review article, submitted to Advances in Polymer Science. 16 figures, 76 pages
Ο τρελός με το βέλος στο στήθος: Παρακειμενική ανάγνωση της διηγηματογραφίας του Μενέλαου Λουντέμη (1938-1966)
Creators: name: Κούκουρα, Ελευθερία Θωμά
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Μενέλαος Λουντέμης
Παρακείμενο
Γενική και Συγκριτική Γραμματολογία
Menelaos Lountemis
Paratext
Comparative Literature

description: Η εργασία πραγματεύεται τη διηγηματογραφική παραγωγή ενός εκ των σημαντικότερων Ελλήνων λογοτεχνών, του Μενέλαου Λουντέμη. Η πολιτική του τοποθέτηση τού στοίχισε αλλεπάλληλες διώξεις και περιπέτειες που στιγμάτισαν την προσωπικότητά του και αντανακλώνται στη λογοτεχνική παραγωγή του, επηρεάζοντας αρνητικά τόσο τη θέση που δικαιωματικά του ανήκει στην ελληνική γραμματεία όσο και την -ετεροχρονισμένη-αναγνώρισή του εντός συνόρων. Στόχος της παρούσας εργασίας είναι η ανάδειξη αθησαύριστων ζητημάτων και παραμέτρων εκκινώντας από το επίπεδο του παρακειμένου και τη σημασία των τίτλων, η αναζωπύρωση του ερευνητικού ενδιαφέροντος και μία εις βάθος ενασχόληση με το σύνολο του παραδομένου συγγραφικού έργου του Μ. Λουντέμη προς ολοκλήρωση μίας πληρέστερης επιστημονικής έρευνας σε βάθος χρόνου.
description: The thesis deals with the narrative production of Menelaos Lountemis, one of the most significant Greek writers. His political ideology has cost him the loss of his Greek nationality from the dictatorship of Papadopoulos, a fact that has stigmatized his personality and is reflecting upon his literary production negatively affecting both the position which rightfully belongs to him in Greek literature and his -deferred- recognition within the national borders. The aim of this thesis is the promotion of emerging issues and parameters starting from the scope of paratext study and the significance of titles, the resurgence of scientific interest and an in-depth research of his total literary production towards the completion of a more concise scientific inquiry over time.
Οι Θεομητορικές Ομιλίες του Αγίου Γρηγορίου Παλαμά. Ομιλητική προσέγγιση
Creators: name: Τσετίνης, Γεώργιος Πέτρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Γρηγόριος Παλαμάς
Ομιλίες-Θεοτόκος
Gregory Palamas
Homilies-Virgin Mary

description: Η εργασία με τίτλο: «Οι θεομητορικές Ομιλίες του Αγίου Γρηγορίου Παλαμά. Ομιλητική προσέγγιση» έχει ως σκοπό να εξετάσει με την βοήθεια του κλάδου της Ομιλητικής τις θεομητορικές Ομιλίες που εκφώνησε στο πλήρωμα της Εκκλησίας ο Άγιος Γρηγόριος Παλαμάς. Οι θεομητορικές Ομιλίες του Παλαμά που έχουν διασωθεί, στο σύνολο τους, είναι πέντε . Κάθε Ομιλία του είναι στενά συνδεδεμένη με μια θεομητορική εορτή για την οποία άλλωστε εκφωνεί και λόγο με σκοπό αφενός να εγκωμιάσει το πρόσωπο της Μητέρας του Θεού και αφετέρου να διδάξει κάποια πράγματα σχετικά με την σημαντικότητα του προσώπου της στο σχέδιο της λύτρωσης του ανθρώπου από τον Θεό. Αρχικά δίνονται κάποια ιστορικά στοιχεία για τον βίο και το έργο του αγίου Γρηγορίου και την συνεισφορά του κατά των αιρετικών αντιλήψεων που εμφανίστηκαν στους κόλπους της Εκκλησίας. Έπειτα, αναλύθηκαν ιστορικά και θεολογικά οι θεομητορικές εορτές για τις οποίες ο Γρηγόριος έγραψε και τις διασωθείσες θεομητορικές Ομιλίες. Τέλος, έγινε μια φιλολογική – ομιλητική προσέγγιση των θεομητορικών Ομιλιών του αγίου Γρηγορίου Παλαμά με σκοπό να καταδειχθούν τα μορφολογικά, υφολογικά, γλωσσολογικά και μεθοδολογικά χαρακτηριστικά των Ομιλιών.
description: The study entitled "The Marian Homilies of St. Gregory Palamas. Talkative approach" has as main aim to examine -with the aid of the conversational Sector- the Marian Homilies which are presented to the flock of the Church by St. Gregory Palamas. The Marian Homilies of Palama rescued, are five. Each of his Homilies is closely linked to a Marian feast – the reason why he makes the speech – and aims at both praising the face of God’s Mother and teaching some things concerning the importance of Her in the overall plan of Human redemption from God. Firstly, some historical facts about the life and work of St. Gregory and his contribution against the heretical beliefs appearing within the Church are presented. Following, the Marian feasts for which Gregory has written as well as the rescued Marian Homilies are analysed on historical and theological level. Finally, a literary-talkative approach of the Marian Homilies of St. Gregory Palamas has been made in order to for the morphological, stylistic, linguistic and methodological features of the Homilies to be demonstrated.
Σύνθεση, φασματοσκοπικη και κρυσταλλογραφικη μελετη της δομης, μελετη της βιοδραστικοτητας συμπλοκων υποκατεστημενων τερπυριδινων με Co, Fe, Ni, Zn
Creators: name: Τζέγκα, Ισμήνη Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: subject: Ανόργανη χημεία
subject: Ενώσεις συναρμογής
subject: Υποκατεστημένες τερπυριδίνες
subject: Μοριακή δομή
subject: Βιολογική δραστικότητα
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Coordination compounds
subject: Substituted terpyridines
subject: Molecular structure
subject: Biological properties

description: Στην παρούσα διπλωματική εργασία, πραγματοποιήθηκε η σύνθεση των συμπλόκων ενώσεων του Co(II), Fe(II), Ni(II) και Zn(ΙΙ) με το ligand 4΄-(4-κυανοφαίνυλ)τερπυριδίνη. Οι ενώσεις αυτές χαρακτηρίστηκαν με φυσικοχημικές μεθόδους (μετρήσεις μοριακής αγωγιμότητας, μαγνητικές μετρήσεις) και με φασματοσκοπικές μεθόδους (φασματοσκοπία υπερύθρου, υπεριώδους-ορατού, μαγνητικού πυρηνικού συντονισμού, και φασματοσκοπία φθορισμού). Επίσης, επιλύθηκαν οι κρυσταλλικές δομές των συμπλόκων [Fe(II)(4΄-(4-cyanophenyl)terpyridine)2].Cl2, [Ni(II)(4΄-(4-cyanophenyl)terpyridine)2](NO3)2∙H2O, και [Zn(II)(4΄-(4-cyanophenyl)terpyridine)2](ΝΟ3)2, με κρυσταλλογραφία ακτίνων-Χ. Η αλληλεπίδραση, δηλαδή ο τρόπος και η ισχύς σύνδεσης των παρασκευασθέντων συμπλόκων με calf-thymus DNA, μελετήθηκε με φασματοσκοπία υπεριώδους, φθορισμομετρία και ιξωδομετρία. Τέλος, μελετήθηκε η ανταγωνιστική δράση των υπό μελέτη ενώσεων με το αιθίδιο βρωμίδιο με φασματοσκοπία φθορισμού και προσδιορίστηκε η ικανότητά τους να το αντικαθιστούν στο σύμπλοκο του με το DNA.
description: In the present MSc Thesis, the synthesis of cobalt(II), iron(II), nickel(II) and zinc(II) complexes with the ligand 4΄-(4-cyanophenyl)terpyridine is described. The characterization of these compounds was carried out with physicochemical methods (molecular conductivity measurements, magnetic measurements) and spectroscopic methods (IR, UV-Vis and NMR spectroscopy, fluorescence spectroscopy). The crystal structures of the complexes [Fe(II)(4΄-(4-cyanophenyl)terpyridine)2]Cl2, [Ni(II)(4΄-(4-cyanophenyl)terpyridine)2](NO3)2∙H2O and [Zn(II)(4΄-(4-cyanophenyl) terpyridine)2](ΝΟ3)2, were determined by X-ray crystallography. Furthermore, the interaction of the resultant complexes with calf-thymus DNA was studied by UV and fluorescence spectroscopy, as well as by viscosity measurements. These studies were performed in order to investigate the DNA-binding mode and the binding strength of the compounds to CT DNA. Competitive studies with ethidium bromide (EB) revealed the ability of the complexes to displace the DNA-bound EB
Περί κανονικών και ημικανονικών πολυέδρων του τρισδιάστατου ευκλειδείου χώρου
Creators: name: Κυριακού, Μαρία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: πολύεδρα-κανονικά
ημικανονικά πολύεδρα
polyhedra regular
semi-regular Polyedra

description: Η παρούσα εργασία ασχολείται με τα κανονικά και ημικανονικά πολύεδρα του τρισδιάστατου ευκλείδειου χώρου. Αρχικά γίνεται λόγος για την ιστορία των πολυέδρων από τον Πλάτωνα μέχρι τον KepIer. Στη συνέχεια παρουσιάζονται τα δεκατρία ημικανονικά πολύεδρα, που είναι γνωστά ως Αρχιμήδεια Στερεά. Ακολούθως πραγματευόμαστε τις συμμετρίες των κανονικών και ημικανονικών πολυέδρων. Γίνεται λόγος στο επιστημονικό έργο του Euler και στον τύπο του. Τέλος κάνουμε ιστορική αναδρομή για την εμφάνιση των πολυέδρων στην τέχνη και στην αρχιτεκτονική.
description: This postgraduate dissertation is associated with regular and semi-regular polyhedra of Euclidean three-dimensional space. Initially we make reference to the history of polyhedra from Plato to Kepler. Subsequently we present the thirteen semi-regular polyhedra, known as Archimedian Solids. Afterwards we are dealing with regular and semi-regular polyhedral symmetries and we mention to Euler’s formula as well as to his scientific work. Finally we make reference to the chronology of polyhedra’ s emergence in art and architectu
Design and performance of the silicon sensors for the CMS barrel pixel detector
Creators: name: Allkofer, Y.
name: Amsler, C.
name: Bortoletto, D.
name: Chiochia, V.
name: Cremaldi, L.
name: Cucciarelli, S.
name: Dorokhov, A.
name: Hoermann, C.
name: Horisberger, R.
name: Kim, D.
name: Konecki, M.
name: Kotlinski, D.
name: Prokofiev, K.
name: Regenfus, C.
name: Rohe, T.
name: Sanders, D. A.
name: Son, S.
name: Swartz, M.
name: Speer, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The CMS experiment at the LHC includes a hybrid silicon pixel detector for the reconstruction of charged tracks and of the interaction vertices. The barrel region consists of n-in-n sensors with 100X150 um^2 cell size processed on diffusion oxygenated float zone silicon. A biasing grid is implemented and pixel isolation is achieved with the moderated p-spray technique. An extensive test program was carried out on the H2 beam line of the CERN SPS. In this paper we describe the sensor layout, the beam test setup and the results obtained with both irradiated and non-irradiated prototype devices. Measurements of charge collection, hit detection efficiency, Lorentz angle and spatial resolution are presented.
description: 22 pages, 21 figures
MOESM2 of Clinicopathological and prognostic significance of long noncoding RNA MALAT1 in human cancers: a review and meta-analysis
Creators: name: Li, Juan
name: Cui, Zhigang
name: Li, Hang
name: Lv, Xiaoting
name: Gao, Min
name: Yang, Zitai
name: Bi, Yanhong
name: Zhang, Ziwei
name: Wang, Shengli
name: Zhou, Baosen
name: Yin, Zhihua
Publisher: name: figshare
Year: 2018
Subjects: Medicine
Cell Biology
Biological Sciences not elsewhere classified
Cancer
Science Policy

description: Additional file 2: Table S2. Characteristics of studies for survival outcomes included in the meta-analysis.
Can you do quantum mechanics without Einstein?
Creators: name: Kim, Y. S.
name: Noz, Marilyn E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The present form of quantum mechanics is based on the Copenhagen school of interpretation. Einstein did not belong to the Copenhagen school, because he did not believe in probabilistic interpretation of fundamental physical laws. This is the reason why we are still debating whether there is a more deterministic theory. One cause of this separation between Einstein and the Copenhagen school could have been that the Copenhagen physicists thoroughly ignored Einstein's main concern: the principle of relativity. Paul A. M. Dirac was the first one to realize this problem. Indeed, from 1927 to 1963, Paul A. M. Dirac published at least four papers to study the problem of making the uncertainty relation consistent with Einstein's Lorentz covariance. It is interesting to combine those papers by Dirac to make the uncertainty relation consistent with relativity. It is shown that the mathematics of two coupled oscillators enables us to carry out this job. We are then led to the question of whether the concept of localized probability distribution is consistent with Lorentz covariance.
description: Latex 11 pages, 7 figures; invited paper presented at the International Conference on Foundations of Probability and Physics (Vaxjo, Sweden, June 2006); to be published in the proceedings (AIP Conference Proceedings Series); Minor corrections
Analytic (non)integrability of Arutyunov-Bassi-Lacroix model
Creators: name: Pal, Jitendra
name: Mukherjee, Arnab
name: Lala, Arindam
name: Roychowdhury, Dibakar
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the notion of the gauge/string duality and discuss the Liouvillian (non) integrability criteria for string sigma models in the context of recently proposed Arutyunov-Bassi-Lacroix (ABL) model [JHEP \textbf{03} (2021), 062]. Our analysis complements those previous results due to numerical analysis as well as Lax pair formulation. We consider a winding string ansatz for the deformed torus $T^{\qty(λ_{1},λ_{2},λ)}_{k}$ which can be interpreted as a system of coupled pendulums. Our analysis reveals the Liouvillian nonintegrablity of the associated sigma model. We also obtain the \emph{generalized} decoupling limit and confirm the analytic integrability for the decoupled sector.
description: 12 pages; One reference added; Accepted for publication in Physics Letters B (PLB)
Chemodynamics of Lyman alpha emitters, Lyman break galaxies and elliptical galaxies
Creators: name: Mori, Masao
name: Umemura, Masayuki
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report an ultra-high-resolution simulation that follows evolution from the earliest stages of galaxy formation through the period of dynamical relaxation. The bubble structures of gas revealed in our simulation ($< 3\times 10^8$ years) resemble closely the high-redshift Lyman $α$ emitters (LAEs). After $10^9$ years these bodies are dominated by stellar continuum radiation and look like the Lyman break galaxies (LBGs) known as the high-redshift star-forming galaxies at which point the abundance of elements appears to be solar. After $1.3\times10^{10}$ years, these galaxies resemble present-day ellipticals. The comparisons of simulation results with the observations of elliptical galaxies allow us to conclude that LAEs and LBGs are infants of elliptical galaxies or bulge systems in the nearby universe.
description: To appear in the proceedings of the CRAL-Conference Series I "Chemodynamics: from first stars to local galaxies", Lyon 10-14 July 2006, France, Eds. Emsellem, Wozniak, Massacrier, Gonzalez, Devriendt, Champavert, EAS Publications Series
Supplemental Material for Lopez-Cruz and de los Campos, 2021
Creators: name: Lopez-Cruz, Marco
name: Campos, Gustavo De Los
Publisher: name: GSA Journals
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 60412 Quantitative Genetics (incl. Disease and Trait Mapping Genetics)

description: File_S1.pdf contains a mathematical proof on the equivalence between the standard selection index and BLUP methodology.
File_S2.html contains scripts illustrating how to fit SSI with the SFSI R-package using the Wheat-small data set.File_S3.pdf contains all supplemental figures and tables.@font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-536870145 1107305727 0 0 415 0;}@font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-536859905 -1073732485 9 0 511 0;}@font-face {font-family:Cambria; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-536870145 1073743103 0 0 415 0;}p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0in; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman",serif; mso-fareast-font-family:"Times New Roman";}.MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:Calibri; mso-fareast-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}div.WordSection1 {page:WordSection1;}
Measures with zeros in the inverse of their moment matrix
Creators: name: Helton, J. William
name: Lasserre, Jean B.
name: Putinar, Mihai
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 52A20 (Primary) 52A (Secondary)

description: We investigate and discuss when the inverse of a multivariate truncated moment matrix of a measure $μ$ has zeros in some prescribed entries. We describe precisely which pattern of these zeroes corresponds to independence, namely, the measure having a product structure. A more refined finding is that the key factor forcing a zero entry in this inverse matrix is a certain conditional triangularity property of the orthogonal polynomials associated with $μ$.
description: Published in at http://dx.doi.org/10.1214/07-AOP365 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Closed-form expressions for particle relative velocities induced by turbulence
Creators: name: Ormel, C. W.
name: Cuzzi, J. N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this note we present complete, closed-form expressions for random relative velocities between colliding particles of arbitrary size in nebula turbulence. These results are exact for very small particles (those with stopping times much shorter than the large eddy overturn time) and are also surprisingly accurate in complete generality (that is, also apply for particles with stopping times comparable to, or much longer than, the large eddy overturn time). We note that some previous studies may have adopted previous simple expressions, which we find to be in error regarding the size dependence in the large particle regime.
description: 8 pages, accepted as Research Note by A&A
Two-fluid model of rf current condensation in magnetic islands
Creators: name: Jin, S.
name: Reiman, A. H.
name: Fisch, N. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The stabilization of tearing modes with rf waves is subject to a nonlinear effect, termed rf current condensation, that has the potential to greatly enhance and localize current driven within magnetic islands. Here we extend previous investigations of this effect with a two fluid model that captures the balance of diffusive and thermal equilibration processes within the island. We show that the effective power, and resulting strength of the condensation effect, can be greatly enhanced by avoiding collisional heat loss to the ions. The relative impact of collisions on the overall power balance within the island depends on the ratio of the characteristic diffusion time scale and the electron-ion equilibration time, rather than the latter alone. Although relative heat loss to ions increases with island size, the heating efficiency does as well. In particular, we show that the latter safely dominates for large deposition profiles, as is typically the case for LHCD. This supports the possibility of passive stabilization of NTMs, without the precise aiming of the rf waves required for ECCD stabilization.
Test of Colour Reconnection Models using Three-Jet Events in Hadronic Z Decays
Creators: name: ALEPH Collaboration
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Hadronic Z decays into three jets are used to test QCD models of colour reconnection (CR). A sensitive quantity is the rate of gluon jets with a gap in the particle rapidity distribution and zero jet charge. Gluon jets are identified by either energy-ordering or by tagging two b-jets. The rates predicted by two string-based tunable CR models, one implemented in JETSET (the GAL model), the other in ARIADNE, are too high and disfavoured by the data, whereas the rates from the corresponding non-CR standard versions of these generators are too low. The data can be described by the GAL model assuming a small value for the R_0 parameter in the range 0.01-0.02.
description: 21 pages, 11 figures
Quantum optics with bosons and fermions
Creators: name: Aspect, Alain
name: Boiron, Denis
name: Westbrook, Christoph
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Atom optics, a field which takes much inspiration from traditional optics, has advanced to the point that some of the fundamental experiments of quantum optics, involving photon correlations, have found atomic analogs. We discuss some recent experiments on atom bunching and anti-bunching as well as some prospects for extending them to the field of many body physics.
description: English version of "Optique atomique quantique : apr\`es les bosons, les fermions"
Additional file 1 of Trichoderma atroviride LZ42 releases volatile organic compounds promoting plant growth and suppressing Fusarium wilt disease in tomato seedlings
Creators: name: Rao, Yuxin
name: Zeng, Linzhou
name: Jiang, Hong
name: Mei, Li
name: Wang, Yongjun
Publisher: name: figshare
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 1: TableS1. GenBank accession numbers oftaxa used in phylogenetic analyses.
Lattice Formulation of Two Dimensional Topological Field Theory
Creators: name: Ohta, Kazutoshi
name: Takimi, Tomohisa
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate an integrable property and observables of 2 dimensional N=(4,4) topological field theory defined on a discrete lattice by using the "orbifolding" and "deconstruction" methods. We show that our lattice model possesses the integrability and the partition function reduces to matrix integrals of scalar fields on sites in consequence. We make clear meaningful differences between the discrete lattice and differentiable manifold, which would be important to a study of topological quantities on the lattice. We also propose a new construction of N=(2,2) supersymmetric lattice theory, which is realized by a suitable truncation of scalar fields from the N=(4,4) theory.
description: 33 pages, 2 figures, references added, typos corrected
Fast 2-impulse non-Keplerian orbit-transfer using the Theory of Functional Connections
Creators: name: Junior, Allan K. de Almeida
name: Johnston, Hunter
name: Leake, Carl
name: Mortari, Daniele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: This study applies a new approach, the Theory of Functional Connections (TFC), to solve the two-point boundary-value problem (TPBVP) in non-Keplerian orbit transfer. The perturbations considered are drag, solar radiation pressure, higher-order gravitational potential harmonic terms, and multiple bodies. The proposed approach is applied to Earth-to-Moon transfers, and obtains exact boundary condition satisfaction and with very fast convergence. Thanks to this highly efficient approach, perturbed pork-chop plots of Earth-to-Moon transfers are generated, and individual analyses on the transfers' parameters are easily done at low computational costs. The minimum fuel analysis is provided in terms of the time of flight, thrust application points, and relative geometry of the Moon and Sun. The transfer costs obtained are in agreement with the literature's best solutions, and in some cases are even slightly better.
Dynamic characteristics of a 30 storey building during construction detected from ambient vibration measurements
Creators: name: Schuster, Norman David
Publisher: name: University of British Columbia
Year: 2009

description: The dynamic response of building structures to earthquakes has become an issue in the province of British Columbia because of increased awareness of the seismic hazard in this region. While there is a great deal of knowledge about structural dynamics, the majority of this knowledge is based on uniform structures. Hence, there is concern about extrapolating these results to the behaviour of nonuniform building which emerge from current architectural trends. The focus of this study was to monitor and to quantify the dynamic characteristics of a 30 storey, reinforced concrete building during its construction. This building is representative of the type of construction in Vancouver, B .C. and is therefore a useful case study. In addition, the lateral force resisting system in this structure is uniform in plan and elevation while the distribution of storey mass is asymmetrical due to its geometry as well as a major setback at one corner. Dynamic characteristics were determined by analyzing ambient vibrations of the structure. These vibrations were acquired and processed using a testing system developed at the University of British Columbia (Department of Civil Engineering). Several computer programs were developed during this project to complement the existing software. The objectives of this study included determining mode shapes and periods, determining the effect of architectural components, assessing base motion, and assessing the manner of the core’s deformation. In addition, a dynamic analysis was performed to assess the accuracy of modeling techniques. Finally, some aspects of current building codes were assessed. Ambient vibration testing methods proved very practical and useful. Torsional motion and modal coupling were found to be very significant, while little motion was detected at the base of this building. Natural frequencies decreased and tended to converge as the building height increased. Architectural components did not significantly influence the dynamic characteristics. The dynamic behaviour of this building could be accurately represented using dynamic analysis. Finally, the building code provisions considered in this study appear to be appropriate.
Higgs Boson Properties in the Standard Model and its Supersymmetric Extensions
Creators: name: Ellis, John
name: Ridolfi, Giovanni
name: Zwirner, Fabio
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review the realization of the Brout-Englert-Higgs mechanism in the electroweak theory and describe the experimental and theoretical constraints on the mass of the single Higgs boson expected in the minimal Standard Model. We also discuss the couplings of this Higgs boson and its possible decay modes as functions of its unknown mass. We then review the structure of the Higgs sector in the minimal supersymmetric extension of the Standard Model (MSSM), noting the importance of loop corrections to the masses of its five physical Higgs bosons. Finally, we discuss some non-minimal models.
description: To be published in "Search of the Higgs Particle", Comptes Rendus de l'Academie des Sciences, France
Exciton mediated one phonon resonant Raman scattering from one-dimensional systems
Creators: name: Vamivakas, A. N.
name: Walsh, A.
name: Yin, Y.
name: Unlu, M. S.
name: Goldberg, B. B.
name: Swan, A. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We use the Kramers-Heisenberg approach to derive a general expression for the resonant Raman scattering cross section from a one-dimensional (1D) system explicitly accounting for excitonic effects. The result should prove useful for analyzing the Raman resonance excitation profile lineshapes for a variety of 1D systems including carbon nanotubes and semiconductor quantum wires. We apply this formalism to a simple 1D model system to illustrate the similarities and differences between the free electron and correlated electron-hole theories.
description: 10 pages, 6 figures
One-way dependent clusters and stability of cluster synchronization in directed networks
Creators: name: Lodi, Matteo
name: Sorrentino, Francesco
name: Storace, Marco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Cluster synchronization in networks of coupled oscillators is the subject of broad interest from the scientific community, with applications ranging from neural to social and animal networks and technological systems. Most of these networks are directed, with flows of information or energy that propagate unidirectionally from given nodes to other nodes. Nevertheless, most of the work on cluster synchronization has focused on undirected networks. Here we characterize cluster synchronization in general directed networks. Our first observation is that, in directed networks, a cluster A of nodes might be one-way dependent on another cluster B: in this case, A may remain synchronized provided that B is stable, but the opposite does not hold. The main contribution of this paper is a method to transform the cluster stability problem in an irreducible form. In this way, we decompose the original problem into subproblems of the lowest dimension, which allows us to immediately detect inter-dependencies among clusters. We apply our analysis to two examples of interest, a human network of violin players executing a musical piece for which directed interactions may be either activated or deactivated by the musicians, and a multilayer neural network with directed layer-to-layer connections.
description: This is a preprint of an article published in Nature Communications. The final authenticated version is available online at: https://doi.org/10.1038/s41467-021-24363-7 or https://rdcu.be/cnyaD
Multicritical behavior of two-dimensional anisotropic antiferromagnets in a magnetic field
Creators: name: Pelissetto, Andrea
name: Vicari, Ettore
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the phase diagram and multicritical behavior of anisotropic Heisenberg antiferromagnets on a square lattice in the presence of a magnetic field along the easy axis. We argue that, beside the Ising and XY critical lines, the phase diagram presents a first-order spin-flop line starting from T=0, as in the three-dimensional case. By using field theory we show that the multicritical point where these transition lines meet cannot be O(3) symmetric and occurs at finite temperature. We also predict how the critical temperature of the transition lines varies with the magnetic field and the uniaxial anisotropy in the limit of weak anisotropy.
description: 21 pages, 8 figs
Fourier transform of the $2k_F$ Luttinger liquid density correlation function with different spin and charge velocities
Creators: name: Iucci, A.
name: Fiete, G. A.
name: Giamarchi, T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We obtain a closed-form analytical expression for the zero temperature Fourier transform of the $2k_F$ component of the density-density correlation function in a Luttinger liquid with different spin and charge velocities. For frequencies near the spin and charge singularities approximate analytical forms are given and compared with the exact result. We find power law like singularities leading to either divergence or cusps, depending on the values of the Luttinger parameters and compute the corresponding exponents. Exact integral expressions and numerical results are given for the finite temperature case as well. We show in particular how the temperature rounds the singularities in the correlation function.
description: 8 pages, 3 figures. Minor changes, updated references
Observation and calibration strategies for large-scale multi-beam velocity-resolved mapping of the [CII] emission in the Orion molecular cloud
Creators: name: Higgins, R.
name: Kabanovic, S.
name: Pabst, C.
name: Teyssier, D.
name: Goicoechea, J. R.
name: Berne, O.
name: Chambers, E.
name: Wolfire, M.
name: Suri, S.
name: Buchbender, C.
name: Okada, Y.
name: Mertens, M.
name: Parikka, A.
name: Aladro, R.
name: Richter, H.
name: Güsten, R.
name: Stutzki, J.
name: Tielens, A. G. G. M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. The [CII] 158micron far-infrared fine-structure line is one of the dominant cooling lines of the star-forming interstellar medium (ISM). Hence [CII] emission originates in and thus can be used to trace a range of ISM processes. Velocity-resolved large-scale mapping of [CII] in star-forming regions provides a unique perspective of the kinematics of these regions and their interactions with the exciting source of radiation. Aims. We explore the scientific applications of large-scale mapping of velocity-resolved [CII] observations. With the [CII] observations, we investigate the effect of stellar feedback on the ISM. We present the details of observation, calibration, and data reduction using a heterodyne array receiver mounted on an airborne observatory. Results. A square-degree [CII] map with a spectral resolution of 0.3 km/s is presented. The scientific potential of this data is summarized with discussion of mechanical and radiative stellar feedback, filament tracing using [CII], [CII] opacity effects, [CII] and carbon recombination lines, and [CII] interaction with the large molecular cloud. The data quality and calibration is discussed in detail, and new techniques are presented to mitigate the effects of unavoidable instrument deficiencies (e.g. baseline stability) and thus to improve the data quality. A comparison with a smaller [CII] map taken with the Herschel/Heterodyne Instrument for the Far-Infrared (HIFI) spectrometer is presented.
Dissipative solitons which cannot be trapped
Creators: name: Pardo, Rosa
name: Perez-Garcia, Victor M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In this paper we study the behavior of dissipative solitons in systems with high order nonlinear dissipation and show how they cannot survive under the effect of trapping potentials both of rigid wall type or asymptotically increasing ones. This provides an striking example of a soliton which cannot be trapped and only survives to the action of a weak potential.
Truncated cluster algebras and Feynman integrals with algebraic letters
Creators: name: He, Song
name: Li, Zhenjie
name: Yang, Qinglin
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose that the symbol alphabet for classes of planar, dual-conformal-invariant Feynman integrals can be obtained as truncated cluster algebras purely from their kinematics, which correspond to boundaries of (compactifications of) $G_+(4,n)/T$ for the $n$-particle massless kinematics. For one-, two-, three-mass-easy hexagon kinematics with $n=7,8,9$, we find finite cluster algebras $D_4$, $D_5$ and $D_6$ respectively, in accordance with previous result on alphabets of these integrals. As the main example, we consider hexagon kinematics with two massive corners on opposite sides and find a truncated affine $D_4$ cluster algebra whose polytopal realization is a co-dimension 4 boundary of that of $G_+(4,8)/T$ with 39 facets; the normal vectors for 38 of them correspond to g-vectors and the remaining one gives a limit ray, which yields an alphabet of $38$ rational letters and $5$ algebraic ones with the unique four-mass-box square root. We construct the space of integrable symbols with this alphabet and physical first-entry conditions, whose dimension can be reduced using conditions from a truncated version of cluster adjacency. Already at weight $4$, by imposing last-entry conditions inspired by the $n=8$ double-pentagon integral, we are able to uniquely determine an integrable symbol that gives the algebraic part of the most generic double-pentagon integral. Finally, we locate in the space the $n=8$ double-pentagon ladder integrals up to four loops using differential equations derived from Wilson-loop $d\log$ forms, and we find a remarkable pattern about the appearance of algebraic letters.
description: v2: typos corrected and a comment on smaller alphabet added
O'ZBEKISTON TASHQI SAVDO SIYOSATINING RIVOJLANISH TENDENSIYALARI VA ISTIQBOLLARI
Creators: name: Mavlanov, Anvarbek
Publisher: name: Zenodo
Year: 2025

description: So‘nggi yillarda tashqi savdo sohasini rivojlantirish, uning barqarorligini ta’minlash hamda eksportni rag‘batlantirish maqsadida mamlakatimizda qator huquqiy-me’yoriy hujjatlar qabul qilindi.
Desarrollo del marco jurídico para la remediación de sitios contaminados
Creators: name: Vallejo Aguilar, Sergio Antonio
Publisher: name: Zenodo
Year: 2022
Subjects: ambiente; norma mexicana; contaminación; hidrocarburos; remediación

description: RESUMEN La Ley General del Equilibrio Ecológico y la Protección al Ambiente (LEEGEPA) tiene como objetivo prevenir y reducir la contaminación del suelo, agua y aire, derivada del manejo de los residuos. Preservar los recursos naturales al alentar su aprovechamiento sustentable y controlar la disposición final de los residuos, esta ley enmarca las medidas que han sido implementadas a partir de eventos que afectan el ambiente. Desde 2002 a través de los desastres por explosiones en Guadalajara se inician los Informes de trabajo y de ahí deriva el proyecto de Gestión de Residuos Peligrosos [1]; con ello se genera la Política de Remediación de Sitios Contaminados con el primer grupo Remediador de Suelos, dando como consecuencia la Norma Oficial Mexicana emergente 138 de ecología en ese mismo año (NOM-EM-138-ECOL-2002). Esta norma establece los límites máximos permisibles de contaminación en suelos afectados por hidrocarburos, la caracterización del sitio y procedimientos para la restauración [2]. En particular en emergencia ecológica, definida como una situación derivada de actividades humanas o fenómenos naturales que al afectar severamente a sus elementos, pone en peligro a uno o varios ecosistemas. Dentro de la norma se determinan los criterios que deberán ser considerados en la generación y gestión integral de los residuos, para prevenir y controlar la contaminación del medio ambiente y la protección de la salud humana; está en particular con referencia de hidrocarburos. Con el objetivo es prevenir la contaminación de sitios por el manejo de materiales y residuos, así como definir los criterios a los que se sujetará su remediación [3].
description: {"references": ["Acuerdo mediante el cual se establece el Procedimiento para la evaluaci\u00f3n de la Conformidad para Normas Oficiales Mexicanas expedidas por la Secretar\u00eda del Medio Ambiente y Recursos Naturales. DOF 2 enero de 2006.", "Norma Oficial Mexicana Emergente EM (2002). NOM-EM-138-ECOL-2002 que establece los l\u00edmites m\u00e1ximos permisibles de contaminaci\u00f3n en suelos afectados por hidrocarburos, la caracterizaci\u00f3n del sitio y procedimientos para la restauraci\u00f3n.", "Norma Oficial Mexicana NOM-138-SEMARNAT/SSA1-2012, L\u00edmites m\u00e1ximos permisibles de hidrocarburos en suelos y lineamientos para el muestreo en la caracterizaci\u00f3n y especificaciones para la remediaci\u00f3n."]}
"Membrane-outside" as an optomechanical system
Creators: name: Tagantsev, A. K.
name: Polzik, E. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically study an optomechanical system, which consists of a two-sided cavity and a mechanical membrane that is placed outside of it. The membrane is positioned close to one of its mirrors, and the cavity is coupled to the external light field through the other mirror. Our study is focused on the regime where the dispersive optomechanical coupling in the system vanishes. Such a regime is found to be possible if the membrane is less reflecting than the adjacent mirror, yielding a potentially very strong dissipative optomechanical coupling. Specifically, if the absolute values of amplitude transmission coefficients of the membrane and the mirror, $t$ and $t_m$ respectively, obey the condition $ t_m^2< t\ll t_m\ll 1$, the dissipative coupling constant of the setup exceeds the dispersive coupling constant for an optomechanical cavity of the same length. The dissipative coupling constant and the corresponding optomechanical cooperativity of the proposed system are also compared with those of the Michelson-Sagnac interferometer and the so-called "membrane-at-the-edge" system, which are known for a strong optomechanical dissipative interaction. It is shown that under the above condition, the system proposed here is advantageous in both aspects. It also enables an efficient realization of the two-port configuration, which was recently proposed as a promising optomechanical system, providing, among other benefits, a possibility of quantum limited optomechanical measurements in a system, which does not suffer from any optomechanical instability.
Hybridization-gap Formation and Superconductivity in the Pressure-induced Semimetallic Phase of the Excitonic Insulator Ta$_2$NiSe$_5$
Creators: name: Matsubayashi, Kazuyuki
name: Okamura, Hidekazu
name: Mizokawa, Takashi
name: Katayama, Naoyuki
name: Nakano, Akitoshi
name: Sawa, Hiroshi
name: Kaneko, Tatsuya
name: Toriyama, Tatsuya
name: Konishi, Takehisa
name: Ohta, Yukinori
name: Arima, Hiroto
name: Yamanaka, Rina
name: Hisada, Akihiko
name: Okada, Taku
name: Ikemoto, Yuka
name: Moriwaki, Taro
name: Munakata, Koji
name: Nakao, Akiko
name: Nohara, Minoru
name: Lu, Yangfan
name: Takagi, Hidenori
name: Uwatoko, Yoshiya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The excitonic insulator Ta$_2$NiSe$_5$ experiences a first-order structural transition under pressure from rippled to flat layer-structure at Ps = 3 GPa, which drives the system from an almost zero-gap semiconductor to a semimetal. The pressure-induced semimetal, with lowering temperature, experiences a transition to another semimetal with a partial-gap of 0.1-0.2 eV, accompanied with a monoclinic distortion analogous to that occurs at the excitonic transition below Ps. We argue that the partial-gap originates primarily from a symmetry-allowed hybridization of Ta-conduction and Ni-valence bands due to the lattice distortion, indicative of the importance of electron-lattice coupling. The transition is suppressed with increasing pressure to Pc = 8 GPa. Superconductivity with a maximum Tsc = 1.2 K emerges around Pc, likely mediated by strongly electron-coupled soft phonons. The electron-lattice coupling is as important ingredient as the excitonic instability in Ta2NiSe5.
description: 6 pages, 4 figures
The effectiveness of pH and alkalinity adjustments in reducing lead and copper levels in rechlorinated and chloraminated tap water
Creators: name: Chan, Kenneth C. H.
Publisher: name: University of British Columbia
Year: 2009

description: The effectiveness of pH and alkalinity adjustments in reducing copper and lead levels in rechiorinated and chioraminated tap water was assessed for a study area in Greater Vancouver. Standing cold water, running hot and cold samples were collected from 105 houses that were located in the study areas. The samples were analyzed in the laboratory for lead and copper concentrations, pH, and alkalinity. After following an complex scheme of data manipulation, sorting, and statistical testing, comparisons of the copper and lead levels between the study areas were made. This research study found that pH and alkalinity adjustments were definitely effective in reducing the copper levels in rechlorinated and chioraminated tap water. Lead levels were also reduced, but the magnitude of the reduction was statistically insignificant. The effects of pH and alkalinity adjustments on copper and lead levels did not appear to be different for rechlorinated and chloraminated tap water. Compared to houses with copper plumbing, houses with plastic plumbing and no-lead solder had extremely low levels of copper or lead in the tap water. This study also found that the age of a house, which was fitted with copper plumbing and was less than 15 years old, was not a significant factor in affecting lead concentrations.
A Comparison of Environmental and Economic Sustainability across Seafood and Livestock Product Value Chains
Creators: name: Tsakiridis, Andreas
name: O’Donoghue, Cathal
name: Hynes, Stephen
name: Kilcline, Kevin
name: Tsakiridis, Andreas
name: O’Donoghue, Cathal
name: Hynes, Stephen
name: Kilcline, Kevin
Publisher: name: Unknown
Year: 2020
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: Aquaculture
subject: Food value chains
subject: GHG emissions
subject: Environmentally-extended Input-Output model
subject: Ireland

description: This paper uses an environmentally extended input-output model of the Irish economy to estimate greenhouse gas (GHG) emissions and economic output multipliers in 2010 for two aquatic (aquaculture products and sea fisheries) and five land-based livestock products (beef and veal, sheep meat, pig meat, poultry meat, and dairy products). Moreover, the Global Value Chain (GVC) framework is adopted to qualitatively understand the structure of Irish food sectors and identify segments of the food value chains with the greatest emissions efficiency and economic potential. Aquaculture is found to have the highest output multiplier and a low to medium carbon footprint compared to pastoral livestock products (beef and veal, sheep meat, dairy). The direct and indirect economic benefits of the aquaculture sector along with the relatively low carbon footprint suggest that additional benefits from an expansion of Ireland’s aquaculture sector can be gained. However, aquaculture is energy intensive, and therefore production requires the efficient use of energy and resources and the employment of low carbon technologies that strengthen aquaculture’s sustainability.