cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Learning Better Context Characterizations: An Intelligent Information Retrieval Approach
Creators: name: Lorenzetti, Carlos M.
name: Maguitman, Ana G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Retrieval (cs.IR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: H.3.3
subject: 68P20

description: This paper proposes an incremental method that can be used by an intelligent system to learn better descriptions of a thematic context. The method starts with a small number of terms selected from a simple description of the topic under analysis and uses this description as the initial search context. Using these terms, a set of queries are built and submitted to a search engine. New documents and terms are used to refine the learned vocabulary. Evaluations performed on a large number of topics indicate that the learned vocabulary is much more effective than the original one at the time of constructing queries to retrieve relevant material.
description: 10 pages, 3 figures, CLEI 2008
Probing the Transition Between the Synchrotron and Inverse-compton Spectral Components of 1ES 1959+650
Creators: name: Bottacini, E.
name: Böttcher, M.
name: Schady, P.
name: Rau, A.
name: Zhang, X. -L.
name: Ajello, M.
name: Fendt, C.
name: Greiner, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: 1ES 1959+650 is one of the most remarkable high-peaked BL Lacertae objects (HBL). In 2002, it exhibited a TeV gamma-ray flare without a similar brightening of the synchrotron component at lower energies. We present the results of a multifrequency campaign, triggered by the INTEGRAL IBIS detection of 1ES 1959+650. Our data range from the optical to hard X-ray energies, thus covering the synchrotron and inverse-Compton components simultaneously. We observed the source with INTEGRAL, the Swift X-Ray Telescope, and the UV-Optical Telescope, and nearly simultaneously with a ground-based optical telescope. The steep spectral component at X-ray energies is most likely due to synchrotron emission, while at soft gamma-ray energies the hard spectral index may be interpreted as the onset of the high-energy component of the blazar spectral energy distribution (SED). This is the first clear measurement of a concave X-ray-soft gamma-ray spectrum for an HBL. The SED can be well modeled with a leptonic synchrotron self-Compton model. When the SED is fitted this model requires a very hard electron spectral index of q ~ 1.85, possibly indicating the relevance of second-order Fermi acceleration.
description: 5 pages, 2 postscript figures
title: Ανάλυση συσχετισμού απόδοσης μεθόδων ενεργειακής αναβάθμισης του κτιριακού τομέα
title: Analysis of the correlation among the energy efficiency methods for buildings
Creators: name: Σπυριδακης Γεωργιος
Publisher: name: Technical University of Crete
Year: 2021

description: Η παρούσα διπλωματική εργασία έχει σαν κύριους στόχους: (α) Να αναδείξει τη συνεργατικότητα μεταξύ των διαφόρων μετασκευαστικών μεθόδων εξοικονόμησης ενέργειας στον κτιριακό τομέα. Ο αρχικός στόχος επικεντρώνεται στη σύγκριση απόδοσης των μεθόδων αυτών, όταν συνδυάζονται με επιπλέον μετασκευές. (β) Να προτείνει βέλτιστους τρόπους μετασκευής κτιρίων, συνιστώντας συγκεκριμένες μεθόδους εξοικονόμησης ενέργειας. Ο δευτερεύων στόχος επικεντρώνεται στην ανάλυση της εξοικονόμησης ενέργειας κάθε μεθόδου και συνδυασμού μεθόδων με σκοπό να γίνει πρόταση της βέλτιστης λύσης, λαμβάνοντας υπόψη μόνο τις εξοικονομήσεις κι όχι άλλους παράγοντες, όπως είναι ο χρόνος και το κόστος.

Ως μελέτη περίπτωσης χρησιμοποιήθηκε το κτίριο Κ1 του Πολυτεχνείου Κρήτης στα Χανιά. Το εργαλείο μοντελοποίησης που χρησιμοποιείται για τη διεξαγωγή των αποτελεσμάτων αποτελεί το OpenStudio. Με βάση το εργαλείο αυτό, έγινε ανάλυση του συσχετισμού απόδοσης μεταξύ διαφόρων μετασκευαστικών μεθόδων εξοικονόμησης ενέργειας. Η απόδοση αυτή υπολογίστηκε με τη βοήθεια ενός δείκτη (δείκτης UI) , ο οποίος ορίζεται ως η αναλογία των εξοικονομήσεων που προκύπτουν από την εφαρμογή πολλαπλών μεθόδων ενεργειακής αναβάθμισης προς το άθροισμα των εξοικονομήσεων των ίδιων μεθόδων όταν αυτές εφαρμόζονται   ξεχωριστά. Ο δείκτης αυτός αποτελεί επιπλέον κριτήριο εφαρμογής συνδυασμού μετασκευαστικών μεθόδων εξοικονόμησης ενέργειας κι αυτό αναδεικνύει τη σημαντικότητά του.
description: The main objectives of this particular thesis are: (a) To highlight the utilizability of combined  retrofitting solutions. In other words, the primary objective is to compare the efficiency of different energy saving methods, when combined with each other. (b) To suggest optimal retrofitting solutions, in order to achieve maximum efficiency. The secondary objective focuses on analysing the energy savings of each retrofitting method and each effectiveness when combined, in order to propose the best outcome, while taking into account the energy savings of each method and not other factors, such as time and cost of the implementation.
In this study a campus building of the Technical University of Crete is used (K1 building). The modeling software used for data collection modeling is OpenStudio. This simulation tool is used to evaluate the building’s performance and the overlapping and synergistic effects when multiple retrofitting scenarios are being applied. The Utilizability Index is employed for the analysis of these effects in buildings and is defined as the ratio of energy savings derived from applying combined solutions to a building over the sum of individual energy     savings from applying the same solutions individually. The analysis on the utilizability value provides a selection criterion for retrofitting solution selection, which indicates the importance of this concept.
The System Kato: Detecting Cases of Plagiarism for Answer-Set Programs
Creators: name: Oetsch, Johannes
name: Pührer, Jörg
name: Schwengerer, Martin
name: Tompits, Hans
Publisher: name: arXiv
Year: 2010
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: Plagiarism detection is a growing need among educational institutions and solutions for different purposes exist. An important field in this direction is detecting cases of source-code plagiarism. In this paper, we present the tool Kato for supporting the detection of this kind of plagiarism in the area of answer-set programming (ASP). Currently, the tool is implemented for DLV programs but it is designed to handle other logic-programming dialects as well. We review the basic features of Kato, introduce its theoretical underpinnings, and discuss an application of Kato for plagiarism detection in the context of courses on logic programming at the Vienna University of Technology.
La relazione sulla gestione (RsG): lo studente nel ruolo di consulente aziendale
Creators: name: Soldati, Marco
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2016

description: L’insegnamento di questa unità didattica ben si presta a riferimenti a realtà cantonali che pubblicano una RsG. Inoltre è decisamente rilevante per l’apprendimento degli studenti, funge da collegamento tra le nozioni contabili e le analisi economico-finanziarie. Per favorire il processo di apprendimento è nata l’idea di applicare i principi della Didattica per Situazioni (DpS), integrati ai principi delle didattica disciplinare, per mettere lo studente nella condizione di fare (sviluppo delle competenze). Grazie alla collaborazione di Migros Ticino ho potuto creare una situazione molto vicina ad una situazione reale, simulando un concorso tra 4 fiduciarie per l’ottenimento di un mandato di consulenza. Tra i criteri di assegnazione, figurano la qualità delle domande basate sull’analisi della RsG formulate dai 4 gruppi ai responsabili Migros, e il comportamento professionale avuto durante la visita valutato secondo criteri allestiti con gli studenti. I risultati di questo approccio didattico sono stati valutati quantitativamente e qualitativamente (sotto forma di questionario anonimo), e confrontati ai risultati ottenuti con un approccio tradizionale. Tutti i risultati ottenuti parlano a favore della DpS. Questo approccio favorisce quindi l’acquisizione di competenze e sviluppa la professionalità del docente. Relatore: Luca Berla. Materia: economia aziendale
Audio-Visual Cross-Modal Correspondences of Perceived Urgency: Examination through a Speeded Discrimination Task
Creators: name: Naka, Kiichi
name: Yamauchi, Katsuya
Publisher: name: Brill Online
Year: 2023
Subjects: Sensory processes, perception and performance

description: When presenting information in vehicle cockpits, it is essential to convey an appropriate urgency to the drivers. Perceived urgency has been investigated over the years for each modality, particularly audition and vision. However, the interaction between the modalities of perceived urgency has rarely been examined. To expand the insight into the design application of information presentation, we investigated the audio-visual interaction of perceived urgency using a priming task that involved speeded visual-target discrimination. A total of 60 auditory stimuli were created using a synthesizer. In addition, 13 color squares were used as visual stimuli. Three auditory stimuli with high, medium, and low perceived urgency, and two visual stimuli with high and low perceived urgency were selected based on a subjective evaluation test using a seven-point scale. A priming task was conducted to examine the cross-modal interaction of perceived urgency. Auditory stimuli were presented as prime stimuli, and the participants were asked to discriminate the visual target as quickly as possible. The results revealed that auditory stimuli with high and low perceived urgency facilitated responses to each visual stimulus with similar perceived urgency relative to each visual stimulus with different perceived urgency. The auditory stimulus with medium perceived urgency also facilitated responses to the visual stimulus with high perceived urgency relative to low. The present study shows that cross-modal correspondences can be observed when the stimuli are selected based on their subjective perceived urgency.
Analisi di fattibilità di un ricevitore solare “windowless” con sistema di isolamento aerodinamico a lama d’aria
Creators: name: Selva, Samuel
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2021

description: Negli impianti a concentrazione solare a torre vengono utilizzate una serie di superfici riflettenti (eliostati) per convogliare e concentrare la radiazione solare verso un ricevitore posizionato sulla sommità di una torre. All’interno del ricevitore, la radiazione solare concentrata viene convertita in energia termica e trasportata, mediante l’utilizzo di un fluido termovettore, verso un blocco di potenza per la produzione di energia elettrica. In ottica di efficienza di questa tipologia di impianti, il ricevitore è un componente chiave. Oggigiorno ne esistono differenti soluzioni tecnologiche tra cui, quella a cavità, risulta essere molto promettente specialmente per i vantaggi che offre nel caso di applicazioni ad alta temperatura. Come rappresentato nell’immagine sottostante (Figura 1), in questo tipo di ricevitore, viene normalmente utilizzata una finestra in quarzo per separare la cavità dall’ambiente esterno. Il problema è che si tratta di un componente molto delicato che necessita di una meticolosa gestione del carico termico al fine di evitare problemi strutturali. Un importante passo avanti in questa tecnologia sarebbe quello di sviluppare un sistema di isolamento alternativo del ricevitore che consenta di fare a meno della finestra. I sistemi di isolamento aerodinamici a lama d’aria potrebbero rappresentare una possibile soluzione. Lo scopo del presente lavoro di diploma è quello di valutare criticamente la possibilità di realizzare un ricevitore a cavità “windowless” mediante un sistema di isolamento aerodinamico a lama d’aria.
Influence of the shear viscosity of the quark-gluon plasma on elliptic flow in ultrarelativistic heavy-ion collisions
Creators: name: Niemi, Harri
name: Denicol, Gabriel S.
name: Huovinen, Pasi
name: Molnar, Etele
name: Rischke, Dirk H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We investigate the influence of a temperature-dependent shear viscosity over entropy density ratio eta/s on the transverse momentum spectra and elliptic flow of hadrons in ultrarelativistic heavy-ion collisions. We find that the elliptic flow in sqrt(s_NN) = 200 GeV Au+Au collisions at RHIC is dominated by the viscosity in the hadronic phase and in the phase transition region, but largely insensitive to the viscosity of the quark-gluon plasma (QGP). At the highest LHC energy, the elliptic flow becomes sensitive to the QGP viscosity and insensitive to the hadronic viscosity.
description: 4 pages, 3 figures, version accepted for publication in Physical Review Letters, clarified the temperature regions and phases where elliptic flow is most sensitive to viscosity
System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
Creators: name: Benecke, Wilhelm
Publisher: name: unkn
Year: 2022

description: System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
description: 1
System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
Creators: name: Benecke, Wilhelm
Publisher: name: unkn
Year: 2022

description: System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
description: 2
title: ÐÐ°ÑÐ¸ÑÐ° Ð¾Ñ Ð¿Ð¾Ð²ÐµÑÑ Ð½Ð¾ÑÑÐ½ÑÑ Ð²Ð¾Ð»Ð½ ÑÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð¿ÑÐ¸ÑÐ¾Ð´Ñ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð±Ð°ÑÑÐµÑÐ¾Ð² ÑÐ»Ð¾Ð¶Ð½Ð¾Ð¹ ÑÐ¾ÑÐ¼Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Protection from seismic surface waves utilizing complex shape barriers
Creators: name: ÐÑÐºÐ¾Ð²Ð°, Ð®Ð»Ð¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð¡ÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ðµ Ð²Ð¾Ð»Ð½Ñ
ÑÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ð¹ Ð±Ð°ÑÑÐµÑ
Ð²Ð¾Ð»Ð½Ñ Ð ÑÐ»ÐµÑ
Ð·Ð°Ð´Ð°ÑÐ° ÐÑÐ¼Ð±Ð°
ÑÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ°Ñ Ð·Ð°ÑÐ¸ÑÐ°
seismic barrier
Rayleigh waves
Lamb's problem
seismic protection

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«ÐÐ°ÑÐ¸ÑÐ° Ð¾Ñ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ½ÑÑ Ð²Ð¾Ð»Ð½ ÑÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð¿ÑÐ¸ÑÐ¾Ð´Ñ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð±Ð°ÑÑÐµÑÐ¾Ð² ÑÐ»Ð¾Ð¶Ð½Ð¾Ð¹ ÑÐ¾ÑÐ¼ÑÂ».Â ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½ÑÑ ÑÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð±Ð°ÑÑÐµÑÐ¾Ð² ÑÐ»Ð¾Ð¶Ð½Ð¾Ð¹ ÑÐ¾ÑÐ¼Ñ Ð¿ÑÐ¸ Ð·Ð°ÑÐ¸ÑÐµ Ð¾Ñ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ½ÑÑ Ð²Ð¾Ð»Ð½ Ð ÑÐ»ÐµÑ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð¿Ð»Ð¾ÑÐºÐ¾Ð¹ ÐºÐ¾Ð½ÐµÑÐ½Ð¾-ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸. ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½ÑÑ ÑÐµÐ¹ÑÐ¼Ð¸ÑÐµÑÐºÐ¸Ñ Ð±Ð°ÑÑÐµÑÐ¾Ð² ÑÐ»Ð¾Ð¶Ð½Ð¾Ð¹ ÑÐ¾ÑÐ¼Ñ Ð¿ÑÐ¸ Ð·Ð°ÑÐ¸ÑÐµ Ð¾Ñ Ð¿Ð¾Ð²ÐµÑÑÐ½Ð¾ÑÑÐ½ÑÑ Ð²Ð¾Ð»Ð½ Ð ÑÐ»ÐµÑ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð¿Ð»Ð¾ÑÐºÐ¾Ð¹ ÐºÐ¾Ð½ÐµÑÐ½Ð¾-ÑÐ»ÐµÐ¼ÐµÐ½ÑÐ½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸.
description: The subject of the graduate qualification work is Â«Protection from seismic surface waves utilizing complex shape barriersÂ». The work is presenting the development of a 2D numerical simulation model for complex shape vertical seismic barriers for protection from surface wave of seismic origin.
Stability and Absence of Binding for Multi-Polaron Systems
Creators: name: Frank, Rupert L.
name: Lieb, Elliott H.
name: Seiringer, Robert
name: Thomas, Lawrence E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We resolve several longstanding problems concerning the stability and the absence of multi-particle binding for N\geq 2 polarons. Fröhlich's 1937 polaron model describes non-relativistic particles interacting with a scalar quantized field with coupling \sqrtα, and with each other by Coulomb repulsion of strength U. We prove the following: (i) While there is a known thermodynamic instability for U<2α, stability of matter does hold for U>2α, that is, the ground state energy per particle has a finite limit as N\to\infty. (ii) There is no binding of any kind if U exceeds a critical value that depends on αbut not on N. The same results are shown to hold for the Pekar-Tomasevich model.
description: 23 pages
Ghost points in inverse scattering constructions of stationary Einstein metrics
Creators: name: Chruściel, Piotr T.
name: Nguyen, Luc
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We prove a removable singularities theorem for stationary Einstein equations, with useful implications for constructions of stationary solutions using soliton methods.
title: How theories of meaning resemble attributed situations: methodological suggestions for representing how people conceive the contents of theories of meaning, extracting signifiers’ identity conditions, and measuring domains for allowed influences
Creators: name: Rissanen, Sami
Publisher: name: University of Reading
Year: 2020

description: This thesis develops methods for representing how the contents of theories of meaning become conceived by their users. These contents are treated as the range of systematically elicited conceptions afforded by a designated corpus of key texts. The approach being taken involves first detailing a formal scheme for the components of situations attributed to various entities (e.g. ‘your situation’). This scheme is then applied as a framing device to form a template which accounts for the shared structure between the mental spaces which embody how people conceive different theories of meaning. For the purposes of this task, cognition is treated as embodied in the sense that both the form and content of personal conceptualisations are largely dependent on what both bodily and ecological factors afford. The purpose of this approach is to help understand how theories operate when viewed as worldly entities within a materialist framework. The significance of such understanding lies in enabling analyses and comparisons which account for the effects of material restrictions such as how a theory’s presentation must necessarily be selective and how human cognition operates on models set by precedent. The framework being provided here allows the conceptions each individual theory of meaning elicits to be reduced to formal, commensurate models which account for differences between typical influences on the conceptions characteristic of different demographics such as experts of related fields. Approaching theories of meaning from this angle also reveals new avenues of comparison concerning otherwise implicit details. One involves theory-internal conditions on the full material identity of meaning-instantiating entities. The other concerns the extent of the domains for aggregating applicable influences for which a theory accounts and the range of those it may accommodate.
System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
Creators: name: Benecke, Wilhelm
Publisher: name: unkn
Year: 2022

description: System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
description: 3
The Properties of X-ray Cold Fronts in a Statistical Sample of Simulated Galaxy Clusters
Creators: name: Hallman, Eric J.
name: Skillman, Samuel W.
name: Jeltema, Tesla E.
name: Smith, Britton D.
name: O'Shea, Brian W.
name: Burns, Jack O.
name: Norman, Michael L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We examine the incidence of cold fronts in a large sample of galaxy clusters extracted from a (512h^-1 Mpc) hydrodynamic/N-body cosmological simulation with adiabatic gas physics computed with the Enzo adaptive mesh refinement code. This simulation contains a sample of roughly 4000 galaxy clusters with M > 10^14 M_sun at z=0. For each simulated galaxy cluster, we have created mock 0.3-8.0 keV X-ray observations and spectroscopic-like temperature maps. We have searched these maps with a new automated algorithm to identify the presence of cold fronts in projection. Using a threshold of a minimum of 10 cold front pixels in our images, corresponding to a total comoving length L_cf > 156h^-1 kpc, we find that roughly 10-12% of all projections in a mass-limited sample would be classified as cold front clusters. Interestingly, the fraction of clusters with extended cold front features in our synthetic maps of a mass-limited sample trends only weakly with redshift out to z=1.0. However, when using different selection functions, including a simulated flux limit, the trending with redshift changes significantly. The likelihood of finding cold fronts in the simulated clusters in our sample is a strong function of cluster mass. In clusters with M>7.5x10^14 M_sun the cold front fraction is 40-50%. We also show that the presence of cold fronts is strongly correlated with disturbed morphology as measured by quantitative structure measures. Finally, we find that the incidence of cold fronts in the simulated cluster images is strongly dependent on baryonic physics.
description: 16 pages, 21 figures, Accepted to ApJ
title: The status of fungicide resistance in South American Zymoseptoria tritici populations
Creators: name: Rossato Augusti, Guilherme
Publisher: name: University of Reading
Year: 2020

description: Septoria tritici blotch, causal agent Zymoseptoria tritici, is one of the most important wheat diseases and has a worldwide distribution. Fungicides are essential for the maintenance of reliable wheat yields in areas under high incidence of Z. tritici. Most modern fungicides have single-site modes of action (MoA). Prolonged use of the same MoA to control the pathogen population leads to the selection of isolates with reduced sensitivity. The emergence of resistance to these fungicides can, therefore, compromise disease control and reduce yields. This research aimed to determine whether South American Z. tritici field populations are evolving reduced fungicide sensitivity and to characterize underlying resistance mechanisms in comparison to worldwide field populations of Z. tritici. The results from in vitro sensitivity assays indicate that there is reduced sensitivity to methyl benzimidazole carbamate (MBC), azoles, quinone outside inhibitor (QoI) and succinate dehydrogenase inhibitor (SDHI) fungicides in South American isolates of Z. tritici. Isolates with highly resistant MBC and QoI phenotypes carried the target site amino acid substitutions E198A and G143A, respectively. Target site mutations conferring SDHI resistance were not identified, but some isolates had fluopyram resistance phenotypes possible associated with the presence of a previously-reported additional paralogue of succinate dehydrogenase subunit C in worldwide populations of Z. tritici. Reduced azole sensitivity was conferred by different combinations of amino acid substitutions in the target site sterol 14α-demethylase (CYP51). Population genetic analyses with microsatellite markers and sequence data of the azole target site identified that the European CYP51 encoding gene has introgressed into South American populations of Z. tritici. The results of this research indicate that South American populations of Z. tritici have the potential to evolve levels of fungicide resistance similar to those observed in Europe, which could compromise the future management of Septoria tritici blotch in South America.
Additional file 1 of Differential associations between childhood maltreatment types and borderline personality disorder from the perspective of emotion dysregulation
Creators: name: Yuan, Yan
name: Lee, Hyunji
name: Newhill, Christina E.
name: Eack, Shaun M.
name: Fusco, Rachel
name: Scott, Lori N.
Publisher: name: figshare
Year: 2023
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Additional file 1: Table 1. Demographic Differences in BPD Scores (BOR). Table 2. Demographic Differences in BPD Scores (PAIBOR).
In Burundi si vive: le attività del Centre Jeunes Kamenge
Creators: name: Taddei, Matteo
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2018

description: Dopo aver conosciuto Marco Barzaghini, il fondatore di un’associazione benefica di nome Amici Ticino per il Burundi (AmTiBu), la quale sostiene il Centre Jeunes Kamenge (CJK) di Bujumbura, mi sono fatto attrarre dal suo operato, mobilitandomi sia nel settore umanitario che in quello professionale. Difatti, grazie a questa conoscenza, ho potuto recarmi in loco e svolgere questo progetto fotografico ed editoriale. L’idea di partire e realizzare questo progetto è nata dal fatto che purtroppo AmTiBu conta ancora pochi soci nonostante i 10 anni di attività. È per questo motivo che ho pensato di progettare un artefatto di comunicazione visiva di riferimento come il libro, che grazie ad una serie di fotografie e delle testimonianze scritte dai giovani sia in grado di facilitare il processo di fidelizzazione con i soci dell’associazione, divulgandolo al fine di attrarre nuovi potenziali sostenitori. Per questo tipo di associazione, la fotografia gioca un ruolo fondamentale per mostrare l’operato e dare voce alle persone che si sostengono (è fondamentale mantenere aggiornati i soci sulla situazione dell’attività del Centro). Con questo libro ho desiderato fare questo, mostrare l’identità di alcuni giovani, dando loro la possibilità di scrivere delle testimonianze, fare vedere le varie attività del Centro, tra cui i campi di lavoro estivi ed esporre qualche scena della vita nella zona dei Quartieri in cui è ubicato il CJK. Nel mio progetto, nonostante la difficile situazione politica del Burundi, ho voluto mostrare che in questo luogo si vive, la gioventù è forte ed i sogni sono tanti. Un libro può fare la differenza, può raggiungere moltissime persone. Un libro è stata la soluzione.
System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
Creators: name: Benecke, Wilhelm
Publisher: name: unkn
Year: 2022

description: System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
description: 4
title: ÐÐ°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½Ð°Ñ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ° Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 18 ÐÐÑ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: 18 MW gas turbine plant
Creators: name: ÐÑÐ°Ð²ÑÐµÐ½ÐºÐ¾, ÐÐ¼Ð¸ÑÑÐ¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÐÐ¢Ð£
Ð³Ð°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½Ð°Ñ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ°
ÐºÐ¾Ð¼Ð¿ÑÐµÑÑÐ¾Ñ
ÑÑÑÐ±Ð¸Ð½Ð°
Ð»Ð¾Ð¿Ð°ÑÐºÐ°
Ð´Ð¸ÑÐº
ÑÐ¾ÑÐ¾Ñ
Ð¿ÑÐ¾ÑÐ¾ÑÐ½Ð°Ñ ÑÐ°ÑÑÑ
Ð³Ð°Ð·Ð¾Ð¿ÐµÑÐµÐºÐ°ÑÐ¸Ð²Ð°ÑÑÐ¸Ð¹ Ð°Ð³ÑÐµÐ³Ð°Ñ
gas-turbine installation
gas turbine plant
compressor
turbine
vane
disk
rotor
flow section
gas pumping unit

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½ ÑÐ°ÑÑÐµÑ Ð³Ð°Ð·Ð¾ÑÑÑÐ±Ð¸Ð½Ð½Ð¾Ð¹ ÑÑÑÐ°Ð½Ð¾Ð²ÐºÐ¸ Ð¼Ð¾ÑÐ½Ð¾ÑÑÑÑ 18 ÐÐÑ Ð´Ð»Ñ ÑÐºÑÐ¿Ð»ÑÐ°ÑÐ°ÑÐ¸Ð¸ Ð² ÑÐ¾ÑÑÐ°Ð²Ðµ Ð³Ð°Ð·Ð¾Ð¿ÐµÑÐµÐºÐ°ÑÐ¸Ð²Ð°ÑÑÐµÐ³Ð¾ Ð°Ð³ÑÐµÐ³Ð°ÑÐ° ÐºÐ¾Ð¼Ð¿ÑÐµÑÑÐ¾ÑÐ½Ð¾Ð¹ ÑÑÐ°Ð½ÑÐ¸Ð¸. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ ÑÐ°ÑÑÑÑ ÑÐµÐ¿Ð»Ð¾Ð²Ð¾Ð¹ ÑÑÐµÐ¼Ñ ÐÐ¢Ð£ Ð¸ Ð²ÑÐ±Ð¾Ñ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½ÑÑ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð², Ð¿ÑÐ¸Ð±Ð»Ð¸Ð¶ÐµÐ½Ð½ÑÐ¹ ÑÐ°ÑÑÑÑ ÐºÐ¾Ð¼Ð¿ÑÐµÑÑÐ¾ÑÐ°, ÑÐ°ÑÑÑÑ ÑÑÑÐ±Ð¸Ð½Ñ, ÑÐ°ÑÑÐµÑ Ð·Ð°ÐºÑÑÑÐºÐ¸ Ð¿Ð¾ÑÐ¾ÐºÐ°, Ð¾Ð¿Ð¸ÑÐ°Ð½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐ»ÐµÐ¼ÐµÐ½ÑÑ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸, Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½ Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÐ½Ð¾Ð¹ ÑÐ°ÑÑÑÑ Ð¿Ð¾ÑÐ»ÐµÐ´Ð½ÐµÐ¹ ÑÑÑÐ¿ÐµÐ½Ð¸ ÑÐ²Ð¾Ð±Ð¾Ð´Ð½Ð¾Ð¹ ÑÑÑÐ±Ð¸Ð½Ñ.
description: In this work, calculation of the 18 MW gas-turbine installation for operation as a part of the gas-distributing unit of compressor station was presented. As a re-sult this calculation includes: calculation of the thermal scheme GTU and the choice of optimum parameters, an approximate calculation of compressor, calculation of the turbine, calculation of the spin of the flow, basic structural elements of a design were described and strength calculation of the last stage of the power turbine was made.
Avanzamento nella valutazione delle prestazioni di un sistema di accumulo termico a calore sensibile con direzione dei flussi di carica e scarica orizzontali
Creators: name: Ronzani, Luca
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2021

description: Il lavoro di seguito presentato riguarda lo sviluppo e l’analisi delle prestazioni di un sistema di accumulo di energia termica a letto di rocce ad alta temperatura, noto come HTTES (High temperature thermal energy storage). La struttura è composta principalmente da un fluido termovettore, rappresentato da aria e da un mezzo di accumulo solido, costituito da rocce. Nel caso specifico si tratta di una configurazione differente dalla maggior parte delle alternative studiate in letteratura. Si ha infatti una direzione del flusso orizzontale, orientata radialmente rispetto alla disposizione toroidale del letto impaccato. L’interesse nello sviluppo di questa variante è motivato dalla possibilità di creare soluzioni innovative, le quali non necessitano di particolari strutture contenitive e di isolamento, sfruttando la possibilità di poter interrare gran parte del volume. Il lavoro svolto si suddivide in due sezioni principali. La prima riguarda lo sviluppo di un metodo di analisi e di valutazione delle prestazioni ottenibile mediante lo studio delle simulazioni 2D derivanti dal precedente lavoro di diploma. L’analisi si basa principalmente su due differenti concetti, ovvero lo studio della quantità e della qualità dell’energia accumulata e recuperata. La seconda tematica affrontata riguarda la creazione di un modello 3D che tenga conto di quanto appreso durante lo studio precedente. Sono state modellate correttamente le zone di ingresso e uscita dal mezzo poroso adottando soluzioni in grado di garantire la migliore resa possibile. Attraverso gli strumenti ricavati durante la prima fase del lavoro, è stato possibile ripetere l’analisi sul nuovo caso sviluppato, evidenziando caratteristiche e aspetti migliorativi.
title: ÐÐ¸Ð·Ð°Ð¹Ð½-ÐºÐ¾Ð½ÑÐµÐ¿ÑÐ¸Ñ Ð¿ÐµÑÐ°ÑÐ½Ð¾Ð³Ð¾ Ð¸Ð·Ð´Ð°Ð½Ð¸Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Printed design concept
Creators: name: Ð¢Ð¾ÐºÐ¼Ð°ÐºÐ¾Ð²Ð°, ÐÑÐµÐ½Ð¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð´Ð¸Ð·Ð°Ð¹Ð½
Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐµÑÐºÐ¾Ðµ Ð¸Ð·Ð´Ð°Ð½Ð¸Ðµ
Ð¶ÑÑÐ½Ð°Ð»
Ð²ÐµÑÑÑÐºÐ°
Ð¾Ð±Ð»Ð¾Ð¶ÐºÐ°
Ð¼Ð¾Ð´ÑÐ»ÑÐ½Ð°Ñ ÑÐµÑÐºÐ°
Ð´Ð°Ð¹Ð´Ð¶ÐµÑÑ
design
periodical
magazine
layout
cover
modular grid
digest

description: Ð¦ÐµÐ»ÑÑ Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ ÑÐ²Ð»ÑÐµÑÑÑ Ð´Ð¸Ð·Ð°Ð¹Ð½-ÐºÐ¾Ð½ÑÐµÐ¿ÑÐ¸Ñ Ð¿ÐµÑÐ°ÑÐ½Ð¾Ð³Ð¾ Ð¸Ð·Ð´Ð°Ð½Ð¸Ñ, Ð´Ð°Ð¹Ð´Ð¶ÐµÑÑ Ð²ÑÐ¿ÑÑÐº Ð¶ÑÑÐ½Ð°Ð»Ð° Â«ÐÐ²ÐµÐ·Ð´Ð° Ð ÐµÐ½ÐµÑÑÐ°Ð½ÑÐ°Â», Ð² ÐºÐ¾ÑÐ¾ÑÑÐ¹ Ð²ÑÐ¾Ð´ÑÑ ÑÑÐ°ÑÑÐ¸, Ð¿ÑÐ±Ð»Ð¸ÐºÐ¾Ð²Ð°Ð²ÑÐ¸ÐµÑÑ Ð² Ð¿ÐµÑÐ¸Ð¾Ð´ Ñ 2014 Ð¿Ð¾ 2019 Ð³Ð¾Ð´Ñ, Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð½ÑÐµ Ð½Ð°Ð¸Ð±Ð¾Ð»ÐµÐµ Ð·Ð½Ð°ÑÐ¸Ð¼ÑÐ¼ Ð¿ÑÐµÐ´Ð¼ÐµÑÐ°Ð¼ Ð°Ð½ÑÐ¸ÐºÐ²Ð°ÑÐ¸Ð°ÑÐ°, Ð¸Ð¼ÐµÑÑÐ¸Ð¼ Ð¼ÑÐ·ÐµÐ¹Ð½Ð¾Ðµ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ðµ.
 ÐÐ°Ð´Ð°ÑÐµÐ¹ Ð´Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð¿ÑÐ¾ÐµÐºÑÐ° ÑÐ²Ð»ÑÐµÑÑÑ Ð¿ÑÐ¸Ð²Ð»ÐµÑÐµÐ½Ð¸Ðµ Ð±Ð¾Ð»ÐµÐµ ÑÐ¸ÑÐ¾ÐºÐ¾Ð¹ Ð°ÑÐ´Ð¸ÑÐ¾ÑÐ¸Ð¸, Ð¿Ð¾Ð¿ÑÐ»ÑÑÐ¸Ð·Ð°ÑÐ¸Ñ Ð¸Ð½ÑÐµÑÐµÑÐ° Ðº Ð¸ÑÑÐ¾ÑÐ¸Ð¸ Ð¸ÑÐºÑÑÑÑÐ² Ð¸ Ð°Ð½ÑÐ¸ÐºÐ²Ð°ÑÐ¸Ð°ÑÑ, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð´Ð¾Ð¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»ÑÐ½Ð°Ñ Ð½Ð°Ð²Ð¸Ð³Ð°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ¸ÑÑÐµÐ¼Ð° Ð¸ ÑÐ¾Ð·Ð´Ð°Ð½Ð° Ð¾Ð±Ð»Ð¾Ð¶ÐºÐ°.
 Ð ÑÐ¾Ð´Ðµ ÑÐ°Ð±Ð¾ÑÑ Ð½Ð°Ð´ Ð¿ÑÐ¾ÐµÐºÑÐ¾Ð¼ Ð±ÑÐ» Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· Ð°ÐºÑÑÐ°Ð»ÑÐ½Ð¾ÑÑÐ¸, Ð° ÑÐ°Ðº Ð¶Ðµ Ð¸Ð·ÑÑÐµÐ½Ñ Ð°Ð½Ð°Ð»Ð¾Ð³Ð¸ Ð¿ÐµÑÐ°ÑÐ½ÑÑ Ð¸Ð·Ð´Ð°Ð½Ð¸Ð¹ Ð²ÑÐ±ÑÐ°Ð½Ð½Ð¾Ð¹ ÑÐµÐ¼Ð°ÑÐ¸ÐºÐ¸. Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ ÑÐ°Ð±Ð¾ÑÑ Ð±ÑÐ» ÑÐ¾Ð·Ð´Ð°Ð½ Ð´Ð°Ð¹Ð´Ð¶ÐµÑÑ Ð²ÑÐ¿ÑÑÐº Â«ÐÐ²ÐµÐ·Ð´Ð° Ð ÐµÐ½ÐµÑÑÐ°Ð½ÑÐ°Â».
description: The purpose of this final qualifying work is the design concept of the print edition, the digest edition of the Renaissance Star magazine, which includes articles published between 2014 and 2019 devoted to the most significant antiques of museum value.
 The objective of this project is to attract a wider audience, to popularize interest in the history of art and antiques. During the work on the project, an analysis of relevance was carried out, as well as analogues of printed publications of selected subjects were studied, an additional navigation system was developed, and a cover was created.
As a result of the work, a digest of the Renaissance Star issue was created.
Nonergodic solutions of the generalized Langevin equation
Creators: name: Plyukhin, A. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: It is known that in the regime of superlinear diffusion, characterized by zero integral friction (vanishing integral of the memory function), the generalized Langevin equation may have non-ergodic solutions which do not relax to equilibrium values. It is shown that the equation may have non-ergodic (non-stationary) solutions even if the integral of the memory function is finite and diffusion is normal.
description: 5 pages
System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
Creators: name: Benecke, Wilhelm
Publisher: name: unkn
Year: 2022

description: System des Assekuranz- und Bodmereiwesens aus den Gesetzen und Gebräuchen Hamburgs und der vorzüglichsten handelnden Nationen Europens, so wie aus der Natur des Gegenstandes entwickelt
description: 5
On the statistical properties of Entromin as an orthogonal rotation criterion
Creators: name: Chiu, Kenny
Publisher: name: University of British Columbia
Year: 2021

description: The primary goal of factor analysis is to uncover a set of latent factors that can explain the variation in the data. Principal Component Analysis is one approach that estimates the factors by a set of orthogonal vectors. However, it may be difficult to interpret the factors as-is, and so it is common to rotate the estimated factors to make their coefficients as sparse as possible to improve interpretability. Varimax is the most popular method for factor rotations, and its statistical properties have been studied in recent literature. Entromin is another factor rotation method that is less commonly used and not as well-studied, but there exists conventional wisdom that Entromin generally finds sparser rotations compared to Varimax. In this thesis, we aim to explain the sparsity claim for Entromin by studying its statistical properties. Our main contributions include several theoretical results that take steps towards this aim. We show that Varimax is a first-order approximation of Entromin, and that generalizing this connection leads to a family of Entromin approximations. We derive the conditions under which the second-order approximation can be viewed as performing statistical inference in a latent factor model. We then make the connection between optimizing the Entromin criterion and recovering sparsity in the factors. Other contributions of this thesis include novel connections to statistical concepts that have not been made in the literature to our knowledge, and an empirical study of Entromin on a dataset of New York Times articles.
Large-Scale Periodic Variability of the Wind of the Wolf-Rayet Star WR1 (HD 4004)
Creators: name: Chené, André-Nicolas
name: St-Louis, Nicole
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of an intensive photometric and spectroscopic monitoring campaign of the WN4 Wolf-Rayet (WR) star WR1=HD4004. Our broadband V photometry covering a timespan of 91 days shows variability with a period of P=16.9$^{+0.6}_{-0.3}$ days. The same period is also found in our spectral data. The light-curve is non-sinusoidal with hints of a gradual change in its shape as a function of time. The photometric variations nevertheless remain coherent over several cycles and we estimate that the coherence timescale of the light-curve is of the order of 60 days. The spectroscopy shows large-scale line-profile variability which can be interpreted as excess emission peaks moving from one side of the profile to the other on a timescale of several days. Although we cannot unequivocally exclude the unlikely possibility that WR1 is a binary, we propose that the nature of the variability we have found strongly suggests that it is due to the presence in the wind of the WR star of large-scale structures, most likely Co-rotating Interaction Regions (CIRs), which are predicted to arise in inherently unstable radiatively driven winds when they are perturbed at their base. We also suggest that variability observed in WR6, WR134 and WR137 is of the same nature. Finally, assuming that the period of CIRs is related to the rotational period, we estimate the rotation rate of the four stars for which sufficient monitoring has been carried out; i.e. v$_{rot}$=6.5, 40, 70 and 275 km/s for WR1, WR6, WR134 and WR137, respectively.
description: 19 pages, 13 figures, 1 table, accepted in ApJ
Kinetic instability of drift-Alfven waves in solar corona and stochastic heating
Creators: name: Vranjes, J.
name: Poedts, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The solar atmosphere is structured and inhomogeneous both horizontally and vertically. The omnipresence of coronal magnetic loops implies gradients of the equilibrium plasma quantities like the density, magnetic field and temperature. These gradients are responsible for the excitation of drift waves that grow both within the two-component fluid description (in the presence of collisions and without it) and within the two-component kinetic descriptions (due to purely kinetic effects). In the present work the effects of the density gradient in the direction perpendicular to the magnetic field vector are investigated within the kinetic theory, in both electrostatic and electromagnetic regimes. The electromagnetic regime implies the coupling of the gradient-driven drift wave with the Alfven wave. The growth rates for the two cases are calculated and compared. It is found that, in general, the electrostatic regime is characterized by stronger growth rates, as compared with the electromagnetic perturbations. Also discussed is the stochastic heating associated with the drift wave. The released amount of energy density due to this heating should be more dependent on the magnitude of the background magnetic field than on the coupling of the drift and Alfven waves. The stochastic heating is expected to be much higher in regions with a stronger magnetic field. On the whole, the energy release rate caused by the stochastic heating can be several orders of magnitude above the value presently accepted as necessary for a sustainable coronal heating.
description: To appear in ApJ (2010)
title: Bloc party: investigating the strategies of AILAC in the UNFCCC
Creators: name: Waite, Daniel
Publisher: name: University of Reading
Year: 2020

description: As climate change has become a pressing global political issue, academic interest in the negotiations within the United Nations Framework Convention on Climate Change (UNFCCC) has grown. However, whilst the outcomes, and levels of parties’ influence, have produced much scholarship, a lacuna remains on parties’ strategies. Specifically, strategies used by coalitions have been understudied. This thesis contributes with an investigation of strategies used by AILAC, a group of Latin American states co-operating to advance ambitious global climate action, between 2013 and 2018. As a relatively new coalition, AILAC has received little scholarly attention, with limited study assessing its positions and contributions towards the Paris Agreement. This thesis examines AILAC’s strategy choices and the reasoning behind them through a governmentality theoretical lens. Primarily a theory of power, it sees relations between actors as processes, questioning how actors interact with each other, making it a natural fit for the study of strategies and an attractive alternative to rational choice theories overlooking processes. To determine AILAC’s strategy use, the thesis employs Critical Discourse Analysis. CDA uncovers evidence of strategies within AILAC’s UNFCCC submission texts and interviews with AILAC delegates, providing insights into influences on AILAC’s strategic decision-making. It finds AILAC overwhelmingly preferred less aggressive strategies such as constructive proposals, persuasion, and coalition-building over more aggressive strategies like exerting moral pressure, demands, and threats. This primarily resulted from power relations between AILAC and its negotiating partners; while AILAC is resourcepoor vis-à-vis material power, it is rich in power/knowledge, allowing it to use less aggressive strategies with a reasonable expectation of success where more aggressive strategies reliant on material power would likely fail. The thesis also finds influence on AILAC strategies from various other factors; e.g. AILAC’s bridge-building identity reinforces the attractiveness of less aggressive strategies, while its delegation dynamics drive use of informal spaces.
Color and stellar population gradients in galaxies. Correlation with mass
Creators: name: Tortora, C.
name: Napolitano, N. R.
name: Cardone, V. F.
name: Capaccioli, M.
name: Jetzer, Ph.
name: Molinaro, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyze the color gradients (CGs) of ~50000 nearby SDSS galaxies. From synthetic spectral models based on a simplified star formation recipe, we derive the mean spectral properties, and explain the observed radial trends of the color as gradients of the stellar population age and metallicity (Z). The most massive ETGs (M_* > 10^{11} Msun) have shallow CGs in correspondence of shallow (negative) Z gradients. In the stellar mass range 10^(10.3-10.5) < M_* < 10^(11) Msun, the Z gradients reach their minimum of ~ -0.5 dex^{-1}. At M_* ~ 10^{10.3-10.5} Msun, color and Z gradient slopes suddenly change. They turn out to anti-correlate with the mass, becoming highly positive at the very low masses. We have also found that age gradients anti-correlate with Z gradients, as predicted by hierarchical cosmological simulations for ETGs. On the other side, LTGs have gradients which systematically decrease with mass (and are always more negative than in ETGs), consistently with the expectation from gas infall and SN feedback scenarios. Z is found to be the main driver of the trend of color gradients, especially for LTGs, but age gradients are not negligible and seem to play a significant role too. We have been able to highlight that older galaxies have systematically shallower age and Z gradients than younger ones. Our results for high-mass galaxies are in perfect agreement with predictions based on the merging scenario, while the evolution of LTGs and younger and less massive ETGs seems to be mainly driven by infall and SN feedback. (Abridged)
description: 20 pages, 16 figures, accepted for publication on MNRAS. This version includes revisions after the referee's report.
Aberrant intestinal epithelial cell signaling drives inflammatory responses to bacterial flagellin in inflammatory bowel disease
Creators: name: Rees, William
Publisher: name: University of British Columbia
Year: 2021

description: Inflammatory bowel disease (IBD) consists of two diseases, ulcerative colitis (UC) and Crohn’s disease (CD), both characterized by chronic inflammation in the gastrointestinal tract. Some of the strongest risk alleles, such as NOD2, ATG16L1, and XBP1, affect the functionality of intestinal epithelial cells (IECs). Recent evidence suggests that IECs from IBD patients have long lasting molecular rewiring of the intestinal cellular compartment, with inflammatory gene signatures persisting once inflammation is resolved. Due to the high metabolic burden of their physiologic requirements, IECs are prone to endoplasmic reticulum (ER) stress, which leads to the unfolded protein response (UPR)—a cellular protection pathway that restores translational homeostasis and removes irreversibly stressed cells. Since ER stress has been shown to contribute to the pathogenesis of IBD, I sought to understand how ER stress can drive anti-microbial immune responses, as well as its ability to alter intestinal stem cell (ISC) self-renewal and IEC de-differentiation to recover from ER stress induced damage. I found that ER stress alters the ability of IECs to respond to TLR5 agonist, bacterial flagellin, ultimately leading to the maturation of monocyte derived dendritic cells (moDCs). This mechanism would ultimately link IEC dysfunction to anti-commensal adaptive immunity, which is what is observed in IBD. I also found that IBD-derived IECs display persistent ER stress, which alters their ability to respond to FliC. To understand how ER stressed induced chronic damage alters IEC function, I created a new chronic damage model using repeated cycles of air-liquid interface (ALI) and submergence injury of human derived colon organoid monolayers (colonoids). Through repeated damage by submerging colonoids in culture media, I show significant changes in epithelial cell lineages and gene expression that correlate with epigenetic modifications similar to that described for inflammation-associated GI diseases such as IBD and cancer.
A Cluster of Compact Radio Sources in W40
Creators: name: Rodríguez, Luis F.
name: Rodney, Steven A.
name: Reipurth, Bo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present deep 3.6 cm radio continuum observations of the HII region W40 obtained using the Very Large Array in its A and B configurations. We detect a total of 20 compact radio sources in a region of 4 x 4 arcmin, with 11 of them concentrated in a band with 30 arcsec of extent. We also present JHK photometry of the W40 cluster taken with the QUIRC instrument on the University of Hawaii 2.2 meter telescope. These data reveal that 15 of the 20 VLA sources have infrared counterparts, and 10 show radio variability with periods less than 20 days. Based on these combined radio and IR data, we propose that 8 of the radio sources are candidate ultracompact HII regions, 7 are likely to be young stellar objects, and 2 may be shocked interstellar gas.
description: Accepted for publication in the Astronomical Journal. 10 pages, 4 figures, plus online table in electronic version