cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Discrete family symmetry, Higgs mediators and theta_{13}
Creators: name: Varzielas, Ivo de Medeiros
name: Ross, Graham G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a new (supersymmetric) framework for obtaining an excellent description of quark, charged lepton and neutrino masses and mixings from a Delta(6n^2) family symmetry with multiplet assignments consistent with an underlying SO(10) Grand Unification. It employs a Higgs mediator sector in place of the usual Froggatt-Nielsen messengers, with quark and lepton messengers, and provides significant improvements over existing models of this type having unsuppressed Yukawa couplings to the third generation and a simplified vacuum alignment mechanism. The neutrino mass differences are naturally less hierarchical than those of the quarks and charged leptons. Similarly the lepton mixing angles are much larger than those in the quark sector and have an approximate tri-bi-maximal (TB) mixing form for theta_{12} and theta_{23}. However the mixing angle theta_{13} is naturally much larger than in pure TB mixing and can be consistent with the value found in recent experiments. The magnitude of theta_{13} is correlated with a the predicted deviation of theta_{23} from bi-maximal mixing. The model has light familon fields that can significantly modify the associated SUSY phenomenology.
description: v3: accepted in JHEP
Cartel stability and the curvature of market demand
Creators: name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: SECS-P/01 Economia politica

description: The stability of collusion is analysed for a family of demand functions whose curvature is determined by a parameter varying between zero and infinity. If demand is sufficiently convex, firms may prefer to act as quantity setters in order to increase cartel stability. Otherwise, price-setting behaviour enhances their ability to collude.
title: Liste de mots en arem lue par un locuteur né à Thượng Trạch en 1956
title: List of Arem words read by a speaker born in Thượng Trạch in 1956
Creators: name: Tạ Thành Tấn
Publisher: name: Pangloss
Year: 2021
Subjects: subject: Linguistique
subject: Arem

description: Frame sentences containing target words with onset dentals and velars and some other onsets. Social Sciences and Humanities Research Council of Canada 435-2017-0498: Voicing and its transphonologization: the initiation and actuation of a sound change in Southeast Asia
Do firms compete when demand is low? A Model of Spatial Differentiation
Creators: name: Chirco, Alessandra
name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: SECS-P/01 Economia politica

description: In a spatial competition model, changes in firms’ competitive behaviour may occur when the hypothesis that individual gross surplus is positive in equilibrium is relaxed. We prove that there exists a region of the relevant parameter where firms’ behaviour mimics collusion, while in another range they find it optimal to isolate from each other and behave monopolistically.
Calabi-Yau Kompaktifizierungen von Typ IIB Superstringtheorie
Creators: name: Böhm, Robert
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2001
Subjects: Elektronische Publikation
Zsfassung in engl. Sprache

description: Ausgehend von einer nicht-selbstdualen Wirkung für zehndimensionale Typ IIB Supergravitation wird diese Theorie auf einer Calabi-Yau 3-faltigkeit CY3 und Calabi-Yau 4-faltigkeit CY4 kompaktifiziert. Die Kompaktifizierungen werden dabei in dem Limes vorgenommen, in dem die Volumina der Calabi-Yau Mannigfaltigkeiten groß gegenüber der String-Skala sind. Die resultierenden Niederenergie effektiven Wirkungen werden dargestellt und zusammen mit ihren Symmetrieeigenschaften untersucht: dabei wird insbesondere auch die SL(2,Z)-Symmetrie der Typ IIB Theorie diskutiert.
description: Starting from a non-self-dual action for ten-dimensional typ IIB supergravity this theory is compactified on a Calabi-Yau threefold CY3 and Calabi-Yau fourfold CY4. The compactifications are performed in the limit in which the volumes of the Calabi-Yau manifolds are large compared to the string scale. The resulting low energy effective actions are displayed and studied together with their symmetry properties with specific emphasis the SL(2,Z) symmetry of the Typ IIB theory is discussed.
Inventory of tools for crop diversification available for farmers and advisors
Creators: name: Vandewalle Aline
Publisher: name: Zenodo
Year: 2019
Subjects: Crop Diversification
Tool
Method
Survey

description: This inventory was produced in Task 6.2 of the H2020 project DiverIMPACTS (http://www.diverimpacts.net/).      The aim of the database is  to give an overview of existing tools and methods to promote crop diversification strategies (rotation, multiple cropping, intercropping) at different levels (including the value chain and territory levels). Tools and methods were described in terms of purpose, type, users, and technical characteristics.

This inventory includes tools and methods developed to promote one or more crop diversification strategies as well as tools and methods developed to achieve an expected impact (and crop diversification may be a way of achieving this impact).

By tool, we mean anything used as a means to support the user in decision or a choice-making. By method, we mean a particular procedure for supporting the user in decision or a choice-making. Tools and methods can be used in the form of software, online tools, paper sheets, mobile applications, etc.
Classification of semisimple symmetric spaces with proper SL(2,R)-actions
Creators: name: Okuda, Takayuki
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 57S30 (Primary) 22F30, 22E40, 53C30, 53C35 (Secondary)

description: We give a complete classification of irreducible symmetric spaces for which there exist proper SL(2,R)-actions as isometries, using the criterion for proper actions by T. Kobayashi [Math. Ann. '89] and combinatorial techniques of nilpotent orbits. In particular, we classify irreducible symmetric spaces that admit surface groups as discontinuous groups, combining this with Benoist's theorem [Ann. Math. '96].
description: 41 pages (to appear in Journal of Differential Geometry)
Delegation and Cartel Stability
Creators: name: Lambertini, Luca
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: SECS-P/01 Economia politica

description: The effect of delegation on cartel stability is addressed in a duopoly for a homogeneous product, under Cournot competition. The main findings are that if only one firm is managerial, the critical discount factor is increased by the presence of a weight attached to sales, so that cartel stability is decreased, while if both are managerial the opposite holds. As a consequence, the inclusion of sales in both firms’ objective function represents an incentive towards collusion.
Inefficient social conventions in backward economies
Creators: name: Zagonari, Fabio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1995
Subjects: SECS-P/01 Economia politica

description: When adopted by each member in a society contracts become conventions: they are focal points that solve coordination problems. This paper develops an evolutionary model with two distinct finite populations of players (landlords and landless) in which players from different populations are repeatedly matched within a period to play a stage game. Choices over the three strategies available (fixed rental, share-cropping and wage contracts) are affected by bounded rationality. In particular, players assume their opponents to carry on playing the action they adopted the previous period (inertia hypothesis) so that mimic the most successful strategy played by their own population mates turns out to be the best strategy (miopia hypothesis). Experimentation allows players to innovate towards the preferred strategy every period. The calculation of the eigenvector related to the unit eigenvalue of the Markov matrix stresses that by better solving the collective action problems and decreasing their attachment to habits, landless can change the status quo towards the desired contract. The analysis of the relative dimensions of the basins of attractions highlights that the long-run equilibrium is likely to be the contract preferred by landlords, unless economic incentives are tuned up in order to drive the society to adopt an alternative one.
Exploiting The Multifunctional Potential Of Belowground Biodiversity In Organic Farming: A Chance For Improving Horticultural Productions
Creators: name: Malusà, Eligio
name: Canfora, Loredana
name: Mocali, Stefano
Publisher: name: Zenodo
Year: 2021

description: Poster presented at World Organic Congress, 6-10 September 2021, explaining the aims and activities of Excalibur. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 817946.
Warnaar's bijection and colored partition identities, II
Creators: name: Sandon, Colin
name: Zanello, Fabrizio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: Commutative Algebra (math.AC)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 05A17 (Primary) 05A19, 11P83, 05A15 (Secondary)

description: In our previous paper, we determined a unified combinatorial framework to look at a large number of colored partition identities, and studied the five identities corresponding to the exceptional modular equations of prime degree of the Schroeter, Russell and Ramanujan type. The goal of this paper is to use the master bijection of our previous work to show combinatorially several new and highly nontrivial colored partition identities. We conclude by listing a number of further interesting identities of the same type as conjectures.
description: Contains the second portion of the first author's MIT senior thesis (2011). Some minor revisions with respect to the previous version. 34 pages. To appear in the Ramanujan Journal
Elaphocerella Moser 1919
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Elaphocerella

description: Elaphocerella Moser, 1919b
[1 species].
Type species Elaphocerella variabilis Moser, 1919, by monotypy.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 136, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Resonante Quarzsensoren zum Nachweis von Wechselwirkungen supramolekularer Systeme
Creators: name: Liebau, Maik
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1998
Subjects: Elektronische Publikation

description: Prinzipien, nach denen sich einfache Grundsubstanzen zu komplexen, supramolekularen Systemen anordnen, bilden die Grundlage des Lebens. Die Selbstorganisation von Molekülen auf Wasseroberflächen wurde schon von Benjamin Franklin in seinem klassischen Experiment beschrieben. Durch einfache mathematische Überlegungen gelang es ihm, die Monoschichtstruktur eines Ölfilms auf der Wasseroberfläche vorherzusagen. Wir sind zwar heute immer noch weit davon entfernt, mit synthetischen Methoden die Komplexität natürlicher Systeme zu erreichen, dennoch können auf der Basis der derzeit vorhandenen Erfahrungen Modellsysteme entwickelt werden, die die Simulation natürlicher Haftprozesse gestatten. Die vorliegende Arbeit beschäftigt sich mit Untersuchungen zur Entwicklung eines Meßsystems mit dessen Hilfe es möglich sein sollte, molekulare Erkennungsprozesse an Modellmembranen (trägerfixierte Doppelschichten) in Realzeit zu verfolgen. Dazu wurde die Quarzkristallmikrobalance (QMB) als eine geeignete Methode etabliert und entsprechende Oberfächenbeschichtungstechniken entwickelt. In diesem Zusammenhang wurden Einschlußverbindungen, Mono- und Doppelschichtsysteme sowie vesikuläre Aggregate untersucht. Das Ziel dieser Studien war einerseits die Untersuchung und Charakterisierung von Zelladhäsionsprozessen auf Basis der verwendeten Modelle und andererseits die Entwicklung neuer Arzneistoffträgersysteme, die in der Lage sind, spezifisch an körpereigener Mucosa zu haften.
description: The principles after that simple elements are forming higher aggregates are the basis of life. Man's experience with ordered films stretches back to antiquitity. So, Franklin was the first who determined by a simple arithmetic experiment that oil is forming monolayers at water surfaces. Today we know a little bit more about self aggregation processes. So, we are able to build up supramolecular lipid layers, having great similarity to native membranes. It's not possible to construct complex systems like native cells. For experimental purposes model systems have to be used, which enable the simulation of biological recognition processes, as well as possible. These studies are focussed on the development of a measuring system for visualizing molecular recognition at model membranes (supported planar bilayer) in real time. Therefore a suitable measuring device, the Quartz Crystal Microbalance, and specific coating techniques are developed, that enables the detection of the adhesion of supramolecular systems, such as host-guest receptors, mono- and bilayer systems and vesicular aggregates at modified phospholipid modell membranes. On the one hand the study was designed to investigate cell adhesion processes and on the other hand to develop new mucoadhesive drug delivery systems.
On Pythagoras' theorem for products of spectral triples
Creators: name: D'Andrea, Francesco
name: Martinetti, Pierre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 58B34 (Primary) 46L87 (Secondary)

description: We discuss a version of Pythagoras theorem in noncommutative geometry. Usual Pythagoras theorem can be formulated in terms of Connes' distance, between pure states, in the product of commutative spectral triples. We investigate the generalization to both non pure states and arbitrary spectral triples. We show that Pythagoras theorem is replaced by some Pythagoras inequalities, that we prove for the product of arbitrary (i.e. non-necessarily commutative) spectral triples, assuming only some unitality condition. We show that these inequalities are optimal, and provide non-unital counter-examples inspired by K-homology.
description: Paper slightly shortened to match the published version; Lett. Math. Phys. 2012
Ultrastrukturelle Wandlungen der Lamina epithelialis der menschlichen Tuba uterina in Prä- und Postmenopause im Vergleich mit jüngeren Altersstufen
Creators: name: Schulze, Ellen
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2001
Subjects: Elektronische Publikation
Zsfassung in engl. Sprache

description: Im Schrifttum sind nur wenige zusammenhängende elektronenmikroskopische Untersuchungsergebnisse über die Veränderungen des Eileiterepithels von der Geschlechtsreife bis in das hohe Postmenopausealter zu finden. Untersuchungen von Schultka (1981 a,b,c) und Schultka und Cech (1992) zeigten erste typische morphologische Veränderungen des menschlichen Eileiterepithels ab Beginn des 5. Lebensjahrzehnts. In der Prämenopause der Frau kommt es zu einer Zunahme histochemisch different reagierender Zellen. In der Postmenopause erscheint ein niedriges entdifferenziertes funktionsloses Epithel. Es sollte die Frage beantwortet werden, wie sich das Eileiterepithel von der Geschlechtsreife bis zur Postmenopause ultrastrukturell verhält. Transmissionselektronenmikroskopische Befunde zeigen einen Übergang von einem dynamischen Epithel in der Geschlechtsreife in ein starr wirkendes Epithel in der Prä- und Postmenopause. Der Vorgang der morphologischen Wandlungen setzt ab dem 5. Lebensjahrzehnt ein. Das Epithel setzt sich aus flimmernden und flimmerlosen Zellen zusammen, die während der Prä- und Postmenopause involutiven Veränderungen unterliegen. Auffällig ist in der Prä- und Postmenopause ein Rückgang der Epithelhöhe, Abnahme der sekretorischen Leistung, die dichte Lagerung von Mitochondrien in einigen Flimmerzellen, das vermehrte Auftreten von Lipidtropfen und ein zahlenmäßiger Rückgang der Flimmerzellen.
description: Hither to, it is difficult to find coherent ultrastructurally data on the changes of the oviductal epithelium in the period of sex maturity to the period of postmenopausal age. Investigations of Schultka (1981 a,b,c) and Schultka and Cech (1992) showed typical morphological changes of the oviductal epithelium in the 5th decade of the woman. There is an increase of different histochemical reacting cells in the premenopausal age of the woman. In the postmenopausal age the epithelium is rid of function and appears low. It asked now the question for the ultrastructural behavior of the oviductal epithelium in the period of sex maturity to the period of the postmenopausal age of the woman. Ultrastructurally there is a dynamic epithelium in the period of sex maturity and in the premenopausal and postmenopausal age the epithelium of the oviduct becomes more and more rigid. The process of the morphological changes begins in the 5th decade of the woman. The oviductal epithelium possess ciliated and non-ciliated cells. The cells defeated involutive changes. Following remarkable features were found in the premenopausal and postmenopausal age: a decrease of the cell height, a decrease of secretory activity, the closely packed storage of mitochondria in some ciliated cells, the increase of lipid droplets and an increase of ciliated cells.
Lifshitz formula by spectral summation method
Creators: name: Nesterenko, V. V.
name: Pirozhenko, I. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Lifshitz formula is derived by making use of the spectral summation method which is a mathematically rigorous simultaneous application of both the mode-by-mode summation technique and scattering formalism. The contributions to the Casimir energy of electromagnetic excitations of different types (surface modes, waveguide modes, and photonic modes) are clearly retraced. A correct transition to imaginary frequencies is accomplished with allowance for all the peculiarities of the frequency equations and pertinent scattering data in the complex $ω$ plane, including, in particular, the cuts connecting the branch points and complex roots of the frequency equations (quasi-normal modes). The principal novelty of our approach is a special choice of appropriate passes in the contour integrals, which are used for transition to imaginary frequencies. As a result, the long standing problem of cuts in the complex $ω$ plane is solved completely. Inconsistencies of some previous derivations of the Lifshitz formula are traced briefly. For completeness of the presentation, the necessary mathematical facts are also stated, namely, solution of the Maxwell equations for configurations under consideration, scattering formalism for parallel plane interfaces, determination of the frequency equation roots, and others.
description: The version published in Phys. Rev. A 86, 052503 (2012); criticism of some previous derivations of the Lifshitz formula is diminished (Introduction) and emphasizing the authors achievements (Conclusion) is moderated
Un'ipotesi di real business cycle per l'economia italiana: l'analisi delle fluttuazioni dei tassi di crescita
Creators: name: Censolo, Roberto
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: SECS-P/01 Economia politica

description: Con riferimento all'economia italiana, le statistiche descrittive delle fluttuazioni dei tassi di crescita delle principali variabili macroeconomiche, sono confrontate con le predizioni di breve e di lungo periodo di un modello standard di ciclo reale. Le conclusioni sono simili a quelle già rilevate in Censolo-Onofri(93): il modello di ciclo reale risulta un valido strumento descrittivo dei fatti stilizzati del mercato dei beni, ma fallisce al confronto con i fatti del mercato del lavoro. Con riferimento al mercato dei beni, si è riscontrata, una sistematica asimmetria tra le serie effettive e le serie simulate; ciò suggerisce che, all'interno del periodo campione considerato, il miglioramento tecnologico non sia stata la sola fonte di crescita del sistema. Con riferimento al mercato del lavoro, l'insoddisfacente performance del modello suggerisce che shock da domanda potrebbero essere stati la fonte principale delle fluttuazioni osservate. Tuttavia, i risultati leggermente più soddisfacenti, quando il modello è confrontato con le più basse frequenze dei ciclo, sembrano indicare che shock da domanda potrebbero essersi propagati parzialmente utilizzando il canale della tecnologia.
Dissecting negative regulation of plant immunity through studying muse (mutant, snc1-enhancing) mutants
Creators: name: Huang, Yan
Publisher: name: University of British Columbia
Year: 2014

description: Plants respond in various ways to defend themselves against pathogen infections. Resistance (R) protein-mediated defense is one of the most effective mechanisms, through which plants can detect the activity of secreted pathogen-derived molecules (effectors) that promote infection. In Arabidopsis, snc1 encodes a TIR-NB-LRR R-like protein that carries a unique gain-of-function mutation, leading to constitutive activation of defense. Mutant snc1 has been used as a successful tool to dissect R protein-mediated immunity. Over a dozen MOS (Modifier of SNC1) proteins have been identified as positive regulators of plant immunity, indicating a complicated signaling network involved in R protein activation. To study negative regulation of snc1-mediated resistance, genetic screens were performed in mos snc1 backgrounds. Mutants restoring snc1-mediated autoimmunity phenotypes were isolated and named as muse (mutants, snc1-enhancing) mutants. The sensitized mos snc1 background enables us to find mutants that may have subtle defense phenotypes by themselves. This PhD thesis reports the identification and characterization of two muse mutants, muse3 and muse5, both enhancing snc1-associated autoimmune phenotypes in the mos4 snc1 background. MUSE3 is an Arabidopsis ortholog of yeast E4 ubiquitin conjugating factor required for polyubiquitin chain assembly. From the genetic and biochemical data, we found that MUSE3 functions downstream of the E3 complex SCFCPR1 to facilitate the degradation of at least two R proteins, SNC1 and RPS2. My study is the first report on E4 function in plants and adds another key step in R protein turnover pathway. MUSE5 encodes an ortholog of yeast PAM16, part of the mitochondrial inner membrane protein import motor and therefore, is renamed AtPAM16. In yeast pam16 mutants, preprotein import into the matrix is defective. Knocking out AtPAM16 leads to elevated ROS production and enhanced PR gene expression, suggesting that a negative regulator of plant immunity may not be properly imported into mitochondria in Atpam16. This unknown negative regulator is probably involved in preventing ROS accumulation and autoimmunity in mitochondria. This study highlights the significance of negative regulation of plant immunity in mitochondria. In summary, my PhD research contributes to better understanding of the negative regulatory mechanisms plants utilize to defend themselves against pathogen attack.
La dimensione ermeneutica dell'economia in Albert O. Hirschman
Creators: name: Poma, Lucio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: SECS-P/06 Economia applicata

description: Qualsiasi azione umana è tesa al raggiungimento di una qualche soddisfazione, che l’economia ortodossa individua soltanto nell’accrescimento dell’utilità individuale. Se si tenta di rimuovere questa affermazione, contestualizzando i comportamenti all’interno di un sistema di valori, si aprono nuove feconde possibilità di indagine sulla relazione fra comportamenti individuali e dinamiche collettive. A tal fine diventa utile un approfondimento sulla natura umana proprio per meglio comprendere i comportamenti economici.
Advances in the merit factor problem for binary sequences
Creators: name: Jedwab, Jonathan
name: Katz, Daniel J.
name: Schmidt, Kai-Uwe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 94A55, 11B83 (Primary) 11T24 (Secondary)

description: The identification of binary sequences with large merit factor (small mean-squared aperiodic autocorrelation) is an old problem of complex analysis and combinatorial optimization, with practical importance in digital communications engineering and condensed matter physics. We establish the asymptotic merit factor of several families of binary sequences and thereby prove various conjectures, explain numerical evidence presented by other authors, and bring together within a single framework results previously appearing in scattered form. We exhibit, for the first time, families of skew-symmetric sequences whose asymptotic merit factor is as large as the best known value (an algebraic number greater than 6.34) for all binary sequences; this is interesting in light of Golay's conjecture that the subclass of skew-symmetric sequences has asymptotically optimal merit factor. Our methods combine Fourier analysis, estimation of character sums, and estimation of the number of lattice points in polyhedra.
description: 31 pages, minor revisions
Politiche per l'occupazione e microfondamenti "keynesiani" dell'economia del lavoro
Creators: name: Scattaglia, Maria
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1994
Subjects: SECS-P/01 Economia politica

description: Un'idea basilare espressa da Keynes nella Teoria Generale sostiene che una riduzione salariale in presenza di disoccupazione involontaria risulterebbe non solo poco efficace, ma addirittura dannosa, poiché comporterebbe un calo della domanda aggregata. I modelli del mercato del lavoro facenti parte della New Keynesian Economics non necessariamente confortano questa posizione: da essi sembra emergere, come indicazione di politica economica, la necessità di tagliare i salari per poter aumentare l'occupazione.
Using a negative conductance for optimizing the resistive mixers conversion losses
Creators: name: Balatchev, S.
name: Gautier, J.L.
name: Delacressonniere, B.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1996
Subjects: ING-INF/01 Elettronica

description: This paper describes a novel and simple method of compensation for resistive mixers conversion losses. We show that a negative conductance can be used to optimize the resistive mixers conversion losses. Finally, we present the design and the simulation of an optimized simple MMIC resistive mixer with 0 dB conversion loss.
Structural characterization of the Atg1 kinase complex by single particle electron microscopy
Creators: name: Chew, Leon Harold
Publisher: name: University of British Columbia
Year: 2015

description: In eukaryotes, autophagy is an evolutionarily conserved and essential “self-degradative” process used to maintain cellular homeostasis. Central to autophagy is the formation of double-membrane vesicles termed autophagosomes. The process of autophagosome formation is coordinated by over 35 autophagy-related (Atg) proteins. The Atg1 kinase complex constitutes one group of proteins required for the initial induction step of autophagosome formation. The Atg1 kinase complex is composed of the kinase Atg1, a regulatory phosphoprotein Atg13, and a protein scaffold Atg17 that forms a ternary complex with Atg31 and Atg29. In this study, we have determined the structure of the Saccharomyces cerevisiae Atg17-Atg31-Atg29 ternary complex by single-particle electron microscopy. The complex is an “S-shaped” dimer exhibiting an elongated architecture with an end-to-end distance of 345Å. Atg17 was found to form the central scaffold while Atg31 and Atg29 formed two globular densities tethered to the arcs formed by Atg17. Further analysis of purified Atg17 dimers showed that Atg17 mediated dimerization of the complex while Atg31 and Atg29 had a structural role in maintaining the distinct curvature of the complex. We further studied Atg1 kinase complex assembly by co-expressing a minimal pentameric assembly consisting of Atg1 CTD (residues 589-897) and Atg13 CTD (residues 384-738) with Atg17-Atg31-Atg29. Structural analysis localized Atg1 CTD and Atg13 CTD to the terminal regions of the ternary complex supporting that the N-terminus of Atg17 likely mediates complex assembly. Finally, we structurally characterized an important Atg1 kinase complex interacting partner, Atg11. Purified Atg11 exhibited an elongated architecture supporting its role as a coiled-coil protein scaffold.
Narrow band quasi-circulator module design used in a transmit / receive module
Creators: name: Gasmi, A.
name: Huyart, B.
name: Bergeault, E.
name: Jallet, L.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 1996
Subjects: ING-INF/01 Elettronica

description: This paper presents the design and the measured performances of a narrow band MMIC quasi-circulator module. Its design implements active divider and combiner. The device demonstrates a noise figure of 5.5 dB and an output power of 18 dBm with associated gains of 4 dB and 7.6 dB for the receive and transmit path, respectively.
Internal determinants of firms’ innovativeness
Creators: name: WOJNICKA-SYCZ, Elżbieta
name: SYCZ, Piotr
name: WALENTYNOWICZ, Piotr
name: WAŚNIEWSKI, Jarosław
Publisher: name: Wrocław University of Technology, Wrocław University of Economics, Polish Operational and Systems Research Society
Year: 2018
Subjects: firms’ innovativeness, research and development activity, determinants of innovativeness, organisation

description: OPERATIONS RESEARCH AND DECISIONS; ISSN 2081-8858
Newtonian Flow in Converging-Diverging Capillaries
Creators: name: Sochi, Taha
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The one-dimensional Navier-Stokes equations are used to derive analytical expressions for the relation between pressure and volumetric flow rate in capillaries of five different converging-diverging axisymmetric geometries for Newtonian fluids. The results are compared to previously-derived expressions for the same geometries using the lubrication approximation. The results of the one-dimensional Navier-Stokes are identical to those obtained from the lubrication approximation within a non-dimensional numerical factor. The derived flow expressions have also been validated by comparison to numerical solutions obtained from discretization with numerical integration. Moreover, they have been certified by testing the convergence of solutions as the converging-diverging geometries approach the limiting straight geometry.
description: 23 pages, 5 figures, 1 table. This is an extended and improved version. arXiv admin note: substantial text overlap with arXiv:1006.1515
Credit risk management in finance – a review of various approaches
Creators: name: WÓJCICKA-WÓJTOWICZ, Aleksandra
Publisher: name: Wrocław University of Technology, Wrocław University of Economics, Polish Operational and Systems Research Society
Year: 2018
Subjects: credit risk, default, bankruptcy, credit risk management, credit risk models

description: OPERATIONS RESEARCH AND DECISIONS; ISSN 2081-8858
Eucyclophylla Waterhouse 1875
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Eucyclophylla

description: Eucyclophylla Waterhouse, 1875b
[4 species].
Type species Eucyclophylla lata Waterhouse, 1875, by monotypy.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 136, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
Developments in Predistortion and Feedforward
Adaptive Power Amplifier Linearisers
Creators: name: O’Droma, M.
name: Bertran, E.
name: Gadringer, M.
name: Donati, S.
name: Zhu, A.
name: Gilabert, P. L.
name: Portilla, J.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: Key issues in predistortion and feedforward
linearisation solutions for future complex PA systems
destined for a wide range of evolving advanced wireless
systems are reviewed in this paper. In particular, digital
techniques and adaptive schemes are discussed.
Krohn--Rhodes complexity of Brauer type semigroups
Creators: name: Auinger, Karl
Publisher: name: arXiv
Year: 2012
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: The Krohn--Rhodes complexity of the Brauer semigroup $\mathfrak{B}_n$ and of the annular semigroup $\mathfrak{A}_n$ is computed.
description: Several inaccuracies have been eliminated, thanks to the careful reading of an anonymous referee. This version is accepted by Portugaliae Math
Handling Systematic Uncertainties and Combined Source Analyses for Atmospheric Cherenkov Telescopes
Creators: name: Dickinson, Hugh
name: Conrad, Jan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In response to an increasing availability of statistically rich observational data sets, the performance and applicability of traditional Atmospheric Cherenkov Telescope analyses in the regime of systematically dominated measurement uncertainties is examined. In particular, the effect of systematic uncertainties affecting the relative normalisation of fiducial ON and OFF-source sampling regions - often denoted as α - is investigated using combined source analysis as a representative example case. The traditional summation of accumulated ON and OFF-source event counts is found to perform sub-optimally in the studied contexts and requires careful calibration to correct for unexpected and potentially misleading statistical behaviour. More specifically, failure to recognise and correct for erroneous estimates of α is found to produce substantial overestimates of the combined population significance which worsen with increasing target multiplicity. An alternative joint likelihood technique is introduced, which is designed to treat systematic uncertainties in a uniform and statistically robust manner. This alternate method is shown to yield dramatically enhanced performance and reliability with respect to the more traditional approach.
description: 26 pages, 7 figures
GaN H-FET development at QinetiQ
Creators: name: Martin, T.
name: Uren, M. J.
name: Balmer, R.S.
name: Soley, D.
name: Wallis, D. J.
name: Hilton, K. P.
name: Maclean, J. O.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: The AlGaN/GaN HFET project at QinetiQ
has the capability to grow high quality layers using
MOVPE, fabricate HFETs with 0.8 and 0.25µm gate length
and fabricate amplifiers. Here we present recent work on
topics as diverse as X-ray determination of aluminium
concentration, 0.25Ohm.mm Ohmic contacts, measurement
of saturated velocity, current slump and a 57W hybrid
amplifier.
Progress in microwave GaN HEMT grown by MBE
on silicon and smart Cut TM engineered substrates
for high power applications
Creators: name: Larhèche, H.
name: Faure, B.
name: Richtarch, C.
name: Letertre, F.
name: Langer, R.
name: Bove, P.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: SiCOI (SiC On Insulator) composite
substrates obtained by the Smart-Cut TM process are
alternative possible substrates for epitaxial growth of Wide
Band Gap (WBG) materials such as GaN and GaN alloys.
Similar to bonded SOI structure, the SiCOI structures
basically comprises a thin film of single SiC crystal bonded
onto a substrate such as, for instance, silicon substrate.
Additionally to the well known insulation properties, SiCOI
substrates have been proven to be adapted to the growth of
high quality GaN layer. This first study has proven
compatibility of SiCOI structure for single layer GaN MBE
growth. We present here last results of AlGaN / GaN
HEMT structure grown by MBE with NH3 as nitrogen
precursor onto SiCOI (on silicon) structure realised by
Smart Cut ™. First of all, complete SiCOI structure
realisation will be described and typical physical
characterization results will be presented for this kind of
substrate. Then, will be detailed MBE epitaxy set-up and
growth parameters for HEMT structure, including specific
buffer layer stack description. Finally, physical and
electrical characterisation results for epi-layers and HEMT
structure will be presented. Those results show strong
compatibility of SiCOI structure for MBE epitaxy of GaN
based HEMT structure and demonstrate the interest of
Smart Cut ™ approach to build composite substrates, like
SiCOI, for hetero-epitaxy application.
Studies of jet quenching using isolated-photon + jet correlations in PbPb and pp collisions at sqrt(s[NN]) = 2.76 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Results from the first study of isolated-photon + jet correlations in relativistic heavy ion collisions are reported. The analysis uses data from PbPb collisions at a centre-of-mass energy of 2.76 TeV per nucleon pair corresponding to an integrated luminosity of 150 inverse microbarns recorded by the CMS experiment at the LHC. For events containing an isolated photon with transverse momentum pt(gamma) > 60 GeV and an associated jet with pt(Jet) > 30 GeV, the photon + jet pt imbalance is studied as a function of collision centrality and compared to pp data and PYTHIA calculations at the same collision energy. Using the pt(gamma) of the isolated photon as an estimate of the momentum of the associated parton at production, this measurement allows an unbiased characterisation of the in-medium parton energy loss. For more central PbPb collisions, a significant decrease in the ratio pt(Jet)/pt(gamma) relative to that in the PYTHIA reference is observed. Furthermore, significantly more pt(gamma) > 60 GeV photons in PbPb are observed not to have an associated pt(Jet) > 30 GeV jet, compared to the reference. However, no significant broadening of the photon + jet azimuthal correlation is observed.
description: Submitted to Physics Letters B
Progress in microwave GaN HEMT grown by MBE
on silicon and smart cut TM engineered substrates
for high power applications
Creators: name: Larhèche, H.
name: Faure, B.
name: Richtarch, C.
name: Letertre, F.
name: Langer, R.
name: Bove, P.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: SiCOI (SiC On Insulator) composite
substrates obtained by the Smart-Cut TM process are
alternative possible substrates for epitaxial growth of Wide
Band Gap (WBG) materials such as GaN and GaN alloys.
Similar to bonded SOI structure, the SiCOI structures
basically comprises a thin film of single SiC crystal bonded
onto a substrate such as, for instance, silicon substrate.
Additionally to the well known insulation properties, SiCOI
substrates have been proven to be adapted to the growth of
high quality GaN layer. This first study has proven
compatibility of SiCOI structure for single layer GaN MBE
growth. We present here last results of AlGaN / GaN
HEMT structure grown by MBE with NH3 as nitrogen
precursor onto SiCOI (on silicon) structure realised by
Smart Cut ™. First of all, complete SiCOI structure
realisation will be described and typical physical
characterization results will be presented for this kind of
substrate. Then, will be detailed MBE epitaxy set-up and
growth parameters for HEMT structure, including specific
buffer layer stack description. Finally, physical and
electrical characterisation results for epi-layers and HEMT
structure will be presented. Those results show strong
compatibility of SiCOI structure for MBE epitaxy of GaN
based HEMT structure and demonstrate the interest of
Smart Cut ™ approach to build composite substrates, like
SiCOI, for hetero-epitaxy application.
High-order noise filtering in nontrivial quantum logic gates
Creators: name: Green, Todd
name: Uys, Hermann
name: Biercuk, Michael J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Treating the effects of a time-dependent classical dephasing environment during quantum logic operations poses a theoretical challenge, as the application of non-commuting control operations gives rise to both dephasing and depolarization errors that must be accounted for in order to understand total average error rates. We develop a treatment based on effective Hamiltonian theory that allows us to efficiently model the effect of classical noise on nontrivial single-bit quantum logic operations composed of arbitrary control sequences. We present a general method to calculate the ensemble-averaged entanglement fidelity to arbitrary order in terms of noise filter functions, and provide explicit expressions to fourth order in the noise strength. In the weak noise limit we derive explicit filter functions for a broad class of piecewise-constant control sequences, and use them to study the performance of dynamically corrected gates, yielding good agreement with brute-force numerics.
description: Revised and expanded to include filter function terms beyond first order in the Magnus expansion. Related manuscripts available from http://www.physics.usyd.edu.au/~mbiercuk
Additional file 5: of A positive feedback between IDO1 metabolite and COL12A1 via MAPK pathway to promote gastric cancer metastasis
Creators: name: Xiang, Zhen
name: Li, Jun
name: Song, Shuzheng
name: Wang, Jiexuan
name: Cai, Wei
name: Hu, Wenjun
name: Ji, Jun
name: Zhu, Zhenggang
name: Zang, Lu
name: Yan, Ranlin
name: Yu, Yingyan
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Figure S1. IDO1 metabolite kynurenine promotes GC cell proliferation. L-kynurenine (0-100 μM) was used to treat GC cells at different concentrations for 48 h, and CCK8 assay was performed to assess GC cell proliferation ability. **P < 0.01, ***P < 0.001. (PDF 42 kb)
Griveaudella Lacroix 1993
Creators: name: Allsopp, Peter G.
name: Schoolmeesters, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Griveaudella

description: Griveaudella Lacroix, 1993
[1 species].
Type species Griveaudella testacea Lacroix, 1993, by original designation.
description: Published as part of Allsopp, Peter G. & Schoolmeesters, Paul, 2024, All genera of the world: Subfamilies Prototroginae, Cretoscarabaeinae, Dynamopodinae, Electrorubesopsinae, Phaenomeridinae, Orphninae, Allidiostomatinae, Aclopinae, Lichniinae, Melolonthinae, Oncerinae, Podolasiinae, Sericinae, Sericoidinae (Animalia: Arthropoda: Insecta: Coleoptera: Scarabaeidae), pp. 104-175 in Megataxa 12 (1) on page 136, DOI: 10.11646/megataxa.12.1.2, http://zenodo.org/record/14984437
High power/High bandwidth GaN MMICs and
hybrid amplifiers: design and characterization
Creators: name: Van Raay, F.
name: Quay, R.
name: Kiefer, R.
name: Walcher, H.
name: Kappeler, O.
name: Seelmann-Eggebert, M.
name: Müller, S.
name: Schlechtweg, M.
name: Weimann, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2005
Subjects: ING-INF/01 Elettronica

description: Broadband microstrip and coplanar MMIC
amplifiers featuring beyond 10W for X-band radar
applications are realized in a AlGaN/GaN HEMT
technology on 2" s.i. SiC substrate. Single-stage and dualstage demonstrators with flat gain from 1 GHz to 2.7 GHz
and up to 40 W peak power in hybrid microstrip technology
for basestation applications are presented. The performance
illustrates the potential of this technology with very high
bandwidth and superior power density in comparison to
GaAs.
The role of progranulin in the brain
Creators: name: Petkau, Terri Lynn
Publisher: name: University of British Columbia
Year: 2014

description: Frontotemporal lobar degeneration (FTLD) is a devastating, late-onset neurodegenerative disorder that causes profound behavioral abnormalities, language impairment, and alterations in personality in affected patients. As many as 40% of cases have a family history, and of these approximately 25% are due to loss-of-function mutations in the progranulin (GRN) gene. Progranulin-mediated FTLD, inherited in an autosomal dominant manner, is caused by haploinsufficiency. The purpose of this thesis was to characterize a novel mouse model of progranulin deficiency in order to study the role of progranulin in the brain and to understand how progranulin deficiency leads to neurodegeneration. The expression pattern of progranulin in the murine brain was examined using a lacZ reporter transgenic mouse line and immunohistochemistry. Progranulin is expressed at varying levels in all regions of the brain examined. Expression is strongest in the thalamus and hippocampus, moderate in the cortex, and low in the striatum and cerebellum. Double immunofluorescent labeling identified progranulin expression in mature neurons and microglia, the resident immune cells of the brain. Subsequently, a mouse model of progranulin deficiency was generated and characterized for abnormalities in behavior and neuropathology. The tests and outcome measures used were designed to reflect the behavioral and neuropathological changes observed in FTLD patients carrying GRN mutations. Heterozygous loss of progranulin produced no measurable alterations in behavior or pathology. Homozygous loss of progranulin in mice caused subtle behavioral abnormalities, intense microgliosis and astrogliosis throughout the brain, and exaggerated deposition of the aging pigment lipofuscin. Strain-dependent differences in the penetrance and expressivity of these phenotypes was observed, indicating that progranulin-dependent neurodegenerative phenotypes are modified by genetic background. In conclusion, progranulin-deficient mice develop neuropathological phenotypes that indicate increased neuronal stress and a decline in overall brain health that progresses with age. Although dramatic behavioral changes and overt neuronal loss similar to what is seen FTLD patients is not apparent in progranulin-deficient mice, the presence of robust, age-dependent neurodegenerative abnormalities makes progranulin knockout mice a useful model for certain aspects of progranulin-dependent FTLD.