cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The scope of retail/commercial planning at the municipal government level
Creators: name: Waitt, Barry Douglas
Publisher: name: University of British Columbia
Year: 2010

description: The functioning of the retail sector and the commercial structure of Canadian urban areas has become increasingly important in the 1980's, as the prosperity of major Western cities becomes more dependent on their ability to function as commercial service centers. The public responsibility for regulating the development of retail/commercial facilities is primarily a task for municipal governments. In light of this, this thesis critically examines the scope of planning for retail/commercial development at the municipal government level, using the Municipality of Richmond as a case study. This study suggests that there is room for the Municipality of Richmond to increase their effectiveness in planning and regulating commercial development, largely through allowing municipal planners to expand their scope of involvement in this field. In the literature review, commercial land use planning abroad, as well as various theories, concepts, and models that contribute to the commercial planning process are discussed. The purpose of this is to discover planning practice and commercial planning theory that could be useful for planners that have the responsibility of planning for retail/commercial development. A policy analysis of retail/commercial planning is provided through a review of municipal government documents that are relevant to public sector planning for commercial development in Richmond and through a series of interviews with planners and other public officials who are involved in commercial land use planning in the municipality. From this policy analysis, questions are raised about the scope and comprehensiveness of retail/commercial planning in Richmond, as well as how long-range an approach is applied to this sector. Utilizing the information collected in the literature review, as well as the interviews, several suggestions are offered on how the Municipality of Richmond could apply certain concepts to improve their effectiveness in planning for retail/commercial development. The suggestions include 1) an articulated commercial planning policy, 2) consideration of a broader range of factors when making decisions about commercial development, 3) more sophisticated research on retailing issues, 4) an awareness of the impact different forms of retailing can have on the commercial structure, 5) utilizing private sector expertise, and 6) adopting a regional perspective toward commercial planning.
"Portrait de l'artiste en passeur": Luigi Gualdo recensore e critico letterario tra Italia e Francia
Creators: name: Sannino, Daniela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: Studio del processo di mediazione culturale in ambito artistico-letterario tra Italia e Francia nella seconda metà del XIX secolo attraverso l'analisi della figura e dell'operato dello scrittore e critico Luigi Gualdo.
Transport properties and coherence in YBCO submicron structures.
Creators: name: Papari, Gian Paolo
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: The research activity has been mostly focused on the study of the transport properties of high critical temperature superconductor (HTS) nanostructures. The experiments have been carried on YBCO samples down to size width of 150 nm. This is one of the very first systematic studies of HTS devices at these length scales and represents an intermediate step towards the ideal nanoscale transport experiments, whose dimensions should be closer also to the HTS coherence length. Transport measurements at the nanoscale should unveil some secrets on the HTS physics. Sizes of the order of a few hundred nm guarantee a high level of homogeneity and reproducibility of physical phenomena, and give access to a series of experiments where the macroscopic quantum coherence manifest more pronounced properties than at larger scales. Samples have been patterned in shape of bridges and rings, where the ring radius and the width of channels have been varied from 1 um down to 150 nm. The reproducibility of superconducting transport properties as the critical current density (Jc) and the critical temperature (Tc) scale with the sample size. In optimal fabrication conditions the reduction of Tc and Jc is strictly below 10%, when we pass from 1 um down to 150 nm channel width, which is among the best results available in literature. Part of measurements have been addressed to the study of the magnetic and temperature dependence of the resistance. In ring shaped samples Little-Parks effect has been detected. Measurements on underdoped nano-rings can be directed to some relevant issues concerning flux periodicity anomalies induced by the d-wave order parameter .
MASTOCITOSI: DATI DEL CENTRO DELL’UNIVERSITÀ DI NAPOLI FEDERICO II AFFERENTE AL NETWORK EUROPEO MASTOCITOSI (ECNM)
Creators: name: Magliacane, Diomira
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: Introduzione: La mastocitosi è una malattia rara caratterizzata da una abnorme proliferazione ed accumulo di mastociti in differenti organi e tessuti. La mastocitosi può essere classificata in cutanea (MC), quando l’infiltrato mastocitario è limitato alla cute, e sistemica (MS), quando i mastociti proliferano in organi extracutanei quali il midollo osseo, il tratto gastrointestinale, il fegato, la milza ed i linfonodi. I sintomi ed i reperti clinici della mastocitosi dipendono sia dalla liberazione di mediatori secreti dai mastociti (istamina, triptasi, cisteinil leucotrieni, etc.) che dall’infiltrazione tessutale di queste cellule. Quest’ultima può determinare alterazioni più o meno marcate della funzionalità d’organo in base alle quali la MS può essere classificata come indolente, intermedia od aggressiva. La triptasi è una serina-proteasi secreta pressoché esclusivamente dai mastociti. L’aumento della triptasi sierica è considerato un criterio diagnostico minore di mastocitosi sistemica. Lo scopo di questo studio è stato quello di verificare il ruolo della triptasi come indicatore di gravità e di risposta alla terapia citoriduttiva in pazienti con mastocitosi. Materiali e metodi: Sono stati seguiti 118 pazienti con mastocitosi afferenti al nostro centro. Di questi, 83 erano affetti da MC e 35 da MS. La MC era stata diagnosticata mediante biopsia cutanea (con biopsia osteomidollare negativa), mentre la MS era stata diagnosticata mediante biopsia osteomidollare (criteri WHO). Il dosaggio della triptasi sierica è stato effettuato con metodica Unicap (Pharmacia). Risultati: I valori di triptasi sierica erano normali (< 20 µg/L) nell’75% dei pazienti con MC (62/83), con un valore medio di 19,1 µg/L. Nei pazienti con MS i livelli di triptasi risultavano elevati (> 20 µg/L) nell’94% dei casi (33/35) e nella norma nel 6% (2/35), con una media di 148,3 µg/L. I livelli sierici di triptasi non erano influenzati significativamente dalla terapia corticosteroidea. I valori di triptasi sono rimasti relativamente stabili nei pazienti con MS indolente (follow-up medio: 32 mesi) mentre aumentavano progressivamente nei pazienti con MS intermedia ed aggressiva. Nei pazienti sottoposti a terapia citoriduttiva (con interferone, cladribina od imatinib), la triptasi sierica si è ridotta di oltre il 50% nei pazienti responsivi (valutati mediante biopsia osteomidollare) ma non in quelli non responsivi. Conclusioni: Questi dati indicano che la triptasi consente di discriminare tra pazienti con mastocitosi cutanea e sistemica ed è un marcatore utile per monitorare la progressione clinica delle varianti aggressive di mastocitosi sistemica e per valutare la risposta alla terapia citoriduttiva.
Multiscale Solar Wind Turbulence Properties inside and near Switchbacks measured by Parker Solar Probe
Creators: name: Martinović, Mihailo M.
name: Klein, Kristopher G.
name: Huang, Jia
name: Chandran, Benjamin D. G.
name: Kasper, Justin C.
name: Lichko, Emily
name: Bowen, Trevor
name: Chen, Christopher H. K.
name: Matteini, Lorenzo
name: Stevens, Michael
name: Case, Anthony W.
name: Bale, Stuart D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Parker Solar Probe (PSP) routinely observes magnetic field deflections in the solar wind at distances less than 0.3 au from the Sun. These deflections are related to structures commonly called 'switchbacks' (SBs), whose origins and characteristic properties are currently debated. Here, we use a database of visually selected SB intervals - and regions of solar wind plasma measured just before and after each SB - to examine plasma parameters, turbulent spectra from inertial to dissipation scales, and intermittency effects in these intervals. We find that many features, such as perpendicular stochastic heating rates and turbulence spectral slopes are fairly similar inside and outside of SBs. However, important kinetic properties, such as the characteristic break scale between the inertial to dissipation ranges differ inside and outside these intervals, as does the level of intermittency, which is notably enhanced inside SBs and in their close proximity, most likely due to magnetic field and velocity shears observed at the edges. We conclude that the plasma inside and outside of a SB, in most of the observed cases, belongs to the same stream, and that the evolution of these structures is most likely regulated by kinetic processes, which dominate small scale structures at the SB edges.
Technische Regelwerke in der Europäischen Union
Creators: name: Alt, Norbert
Publisher: name: LANDTECHNIK
Year: 1997

description: Nachdem in den bisherigen Beiträgen dieser Artikelserie die Grundlagen des europäischen Regelwerkes (Heft 1/97), die Arbeitssicherheit (Heft 2/97), die europäische Normung (Heft 3/97) und die Straßenverkehrsvorschriften für Traktoren (Heft 4/97) angesprochen worden sind, befasst sich dieser Beitrag mit den Umweltschutzvorschriften in der Europäischen Union.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
Bodenrinnenhalle zur standardisierten Versuchsdurchführung mit Bodenbearbeitungswerkzeugen
Creators: name: Rump, Bernhard
name: Köller, Karlheinz
Publisher: name: LANDTECHNIK
Year: 1997

description: Die Untersuchung von Bodenbearbeitungswerkzeugen und -geräten ist im Freiland oft schwierig. Eine Lösung dieses Problems sind überdachte Bodenrinnen. Hohe Ansprüche müssen an die Textur und die Aufbereitung des Bodens gestellt werden. Der Boden soll reproduzierbare und auf das Freiland übertragbare Ergebnisse erlauben. ln der Hohenheimer Bodenrinnenhalle wird sowohl zu Bodenaufbereitung als auch zur Versuchsdurchführung ein Gantry eingesetzt. Erste Versuche dienen der Weiterentwicklung von Direktsaatscharen.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
Bestimmung der Druschfähigkeit (Dresch-lndex) von Getreide
Creators: name: Wacker, Peter
Publisher: name: LANDTECHNIK
Year: 1997

description: Der Mähdrescher hat sich zur Ernte von Körnerfrüchten in den industrialisierten Ländern durchgesetzt. Es gelang, Getreide in einem Arbeitsgang mit sehr geringen Verlusten, guter Arbeitsqualität und hohem Durchsatz zu ernten. Dies wurde durch konstruktive Verbesserungen, Einführung rotierender Abscheidesysteme, aber auch durch pflanzenbauliche Maßnahmen und züchterische Fortschritte erzielt. Durch neue Sorten wurden die Erträge erhöht, eine gleichmäßigere Abreite des Korns und eine höhere Ausfallfestigkeit erreicht. Bisher nur in geringem Maße von der Pflanzenzüchtung berücksichtigt wurde die Auswirkung neuer Sorten auf die Arbeitsqualität von Mähdreschern. ln Hohenheim wurde ein Versuchsstand aufgebaut, mit dem mit relativ geringem Aufwand die Stoffeigenschaften des zu bearbeitenden Gutes hinsichtlich Kornabscheidung und Kornbeschädigung ermittelt werden können.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
They'll Know It When They See It: Analyzing Post-Release Feedback from the Android Community
Creators: name: Licorish, Sherlock A.
name: Lee, Chan Won
name: Savarimuthu, Bastin Tony Roy
name: Patel, Priyanka
name: MacDonell, Stephen G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: It is known that user involvement and user-centered design enhance system acceptance, particularly when end-users' views are considered early in the process. However, the increasingly common method of system deployment, through frequent releases via an online application distribution platform, relies more on post-release feedback from a virtual community. Such feedback may be received from large and diverse communities of users, posing challenges to developers in terms of extracting and identifying the most pressing requests to address. In seeking to tackle these challenges we have used natural language processing techniques to study enhancement requests logged by the Android community. We observe that features associated with a specific subset of topics were most frequently requested for improvement, and that end-users expressed particular discontent with the Jellybean release. End-users also tended to request improvements to specific issues together, potentially posing a prioritization challenge to Google.
description: Conference Proceeding, 10 pages, 4 figures, 3 tables
Bewertung von Mähwerken beim Einsatz auf Stilllegungsflächen
Creators: name: Kraut, Doris
name: Jacobs, Helen
name: Linke, Friedhelm
Publisher: name: LANDTECHNIK
Year: 1997

description: Um Stilllegungsflächen offenzuhalten und ihre Ertragsfähigkeit für eine spätere Wiedereingliederung in die Produktion zu erhalten, ist eine jährliche Mindestpflege durch Mulchen oder Schröpfen des Bewuchses erforderlich. Die Pflege ist mit geringen Aufwendungen in einer bestimmten Qualität durchzuführen. Bei der Bearbeitung solcher Flächen mit unterschiedlichen Mäh- und Mulchgeräten wurden Untersuchungen zu Arbeitszeitbedarf, Störanfälligkeit der Maschinen, Arbeitsqualität und Kosten angestellt. Anhand der Ergebnisse wird eine Bewertung der Maschinen vorgenommen
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
ISLOM DINIDA SAVDO ISHLARIGA OID HODISALAR VA SAVDOGARNING MA'NAVIY QIYOFASI
Creators: name: I.Abdug'aniyev, TATU Samarqand filiali Telekomunikatsiya texnalogiyalari fakulteti 23-05 guruh talabasi
Publisher: name: Zenodo
Year: 2023

description: Ushbu  maqolada  Islom  dinida  bozor  iqtisodiyoti  va  savdo  ishlariga oid masalalar.Savdogarning manaviy qiyofasi.  Islomda tijorat, savdogar va xaridor odobi.
Emergence of intrinsically isolated flat bands and their topology in fully relaxed twisted multi-layer graphene
Creators: name: Lin, Xianqing
name: Zhu, Haotian
name: Ni, Jun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the electronic structure and band topology of fully relaxed twisted multi-layer graphene (TMLG). Isolated flat bands emerge in TMLG with the number of layers [$M+N$ with $M$ the layer number of the bottom few-layer graphene (FLG)] up to 10 and with various stacking orders, and most of them are on the hole side. The touched bands of FLGs around the Fermi level are split by the moiré coupling through the electron-hole asymmetry in low-energy bands of FLGs and by the vertical hopping between next-nearest layers. The full structural relaxation leads to global gaps that completely isolate a flat band. For TMLG with given $M$ and $N$, the highest magnitude of Chern numbers ($|C|$) of the separable flat bands reaches $M+N-1$ and can be hosted by certain isolated bands. The $|C|=9$ occurs in the isolated flat valence band of several configurations with 10 layers. Such high $|C|$ originates from the lifting of the band-state degeneracy in the weak regime of moiré coupling or from the topological phase transitions induced by the strong moiré coupling. Moreover, large orbital magnetic moments arise in isolated flat bands with high $|C|$ and depend on the structural configurations of TMLG.
description: 10 pages, 7 figures
Surface and inter-phase analysis of Composite Materials using Electromagnetic Techniques based on SQUID Sensors
Creators: name: Bonavolontà, Carmela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: In this thesis an electromagnetic characterization and a non-destructive evaluation of new advanced composite materials, Carbon Fiber Reinforced Polymers (CFRP) and Fiber-Glass Aluminium (FGA) laminates, using an eddy-current technique based on HTS dc-SQUID (Superconductive QUantum Interference Device) magnetometer is proposed. The main goal of this thesis is to propose a prototype based on a superconducting sensor, such as SQUID, to guarantee a more accuracy in the quality control at research level of the composite materials employed in the aeronautical applications.
A briefly introduction about the superconductivity, a complete description of the SQUID properties and its basic working principles have been reported. Moreover, an overview of the most widely used non destructive technique employed in several industrial and research fields have been described. Particular attention is given to the eddy current testing and the technical improvement obtained using SQUID in NDE. The attention has been focused on two particular application, that are the main topics of this thesis. The first concerns with the investigation of the damage due to impact loading on the composites materials, and the second is the study of the corrosion process on the metallic surface. The electrical and mechanical properties of the tested advanced composite materials, such as Carbon Fiber Reinforced Polymers (CFRPs) and Fiber-glass Aluminium (FGA) laminates are investigated. The experimental results concern the non-destructive evaluation of impact loading on the CFRPs and FGA composites, by means of the electromagnetic techniques; the investigation of the electromechanical effect in the CFRPs using the SQUID based prototype and the AFM analyses; and the study of corrosion activity of the metallic surface using magnetic field measurements
Sintesi locale degli RNA assonali e ruolo degli RNA sinaptici nella plasticità cerebrale
Creators: name: Ferrara, Eugenia
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: Il lavoro sperimentale ha avuto lo scopo di verificare l’esistenza di un sistema locale di traduzione localizzato nelle regioni sinaptiche del cervello di ratto e di chiarirne il ruolo nei processi plastici del sistema nervoso. A tal fine si è proceduto alla identificazione di mRNA sinaptosomali che codificano per proteine a specifica localizzazione presinaptica (GAT-1) o gliale ( GFAP) e si è dimostrato che il loro contenuto è modulato dall’apprendimento, suggerendo il ruolo primario svolto dalla sintesi proteica locale nei fenomeni  di plasticità cerebrale.
Si è  inoltre esaminata l’origine locale degli RNA assonali utilizzando come sistema modello l’assone gigante del calamaro, in cui si è dimostrata l’esistenza di un attivo trasferimento di RNA di nuova sintesi dalla glia all’assone modulato da recettori glutammatergici e colinergici gliali. Tali risultati evidenziano l’esistenza di una stretta collaborazione glia-assone nella sintesi locale degli RNA assonali, che costituisce la base cellulare di un sistema locale di espressione genica indipendente dal corpo cellulare.
The effect of volatile thiol compounds on permeability of oral mucosa
Creators: name: Ng, William Man Fai
Publisher: name: University of British Columbia
Year: 2010

description: Cumulative clinical and experimental evidence indicates that volatile sulphur compounds (VSC) the principal components of oral malodour, may play an important role in the pathogenesis of periodontal disease. As their (H₂S and CH₃SH) concentrations in gingival sulci increase with the severity of periodontal involvement, the objective of this investigation is to ascertain if they exert an effect on the permeability of oral mucosa. Permeability determinations were performed on excised porcine sublingual mucosal specimens which consisted of non-keratinized epithelium, basal membrane and connective tissue layers mounted in a two compartment perfusion apparatus. Using radioactive and fluorescent-labelled penetrants, it was found that exposure of the epithelial surface to an atmosphere containing physiological concentrations of both thiols (15 ng H₂S or CH₃SH / ml of 95% air - 5% C0₂) increased the permeability of the mucosa to (³⁵S)-S0₄⁻², (³H)-prostaglandin E₂ (PGE₂) and fluorescein isothiocyanate labelled E. coli lipopolysaccharide (F-LPS). A three hour exposure of the mucosa to H₂S and CH₃SH resulted in a 75% and 103% increase respectively in permeability to (³⁵S)-labelled sulphate ion. Similarly, the mercaptan induced up to a 70% increase in permeability of the mucosa to (³H)-prostaglandin E₂. The magnitude of changes in the permeability were found to depend on duration of exposure to the thiols and to their concentration. Studies using (³⁵S)-H₂S suggest that the observed changes in the tissue permeability are related to the reaction of the thiols with tissue components. In addition, the (³⁵S)-H₂S is capable of perfusing through all three layers of the mucosa at 12.3 ng / cm². In contrast to H₂S , the CH₃SH effect was irreversible in control air / C0₂ environment. This infers that CH₃SH is potentially a more deleterious agent to the tissue barrier. However, its effect can also be reversed by treatment of tissues with 0.22% ZnCl₂ either prior to or after exposure to mercaptan. This suggests that Zn⁺² ion may be useful in preventing the potentially harmful effects of VSC. Fluorescent studies with F-LPS indicate that thiols can also potentiate the penetration of endotoxin. Whereas the fluorescence of the F-LPS in control systems was confined to the superficial epithelial layer in contact with the endotoxin, the CH₃SH- exposed mucosa exhibited fluorescence throughout the epithelial and connective tissue layers. Fluorescent staining of the mucosal specimens with fluorescein diacetate followed by counter staining with ethidium bromide provides evidence of membrane impairment to some cells by CH₃SH. Collectively these observations provide strong experimental evidence that the VSC, products of putrefaction produced in the gingival sulcus by oral microflora, may adversely affect the integrity of the crevicular barrier to deleterious agents and thus contribute to the etiology of periodontal disease.
Images of the Lisbon Treaty Debate in the British Press.
A Corpus-based Approach to Metaphor Analysis
Creators: name: Nasti, Chiara
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: Metaphors play an important role in understanding social and political realities and in particular they are very useful to their user to present complex and abstract situations in terms of more simple and familiar ones. According to Lakoff and Johnson (2003) metaphors are not merely linguistic structures but they shape our thinking and define our social and political reality. Many scholars (Musolff et all. 2001, Musolff 1996, Schäffner 1996)  have also shown how metaphors are fundamental in interpreting and understanding the complex dynamics of the political debate about Europe. By presenting European issues in the form of well-known and recognisable schemas and scenarios metaphors make them accessible to the general reader. However, in order to understand complexity of metaphors, it is necessary to analyse them in the context where they occur.
Against this background, this paper aims to investigate the representation and description of the European Union integration process related to the Lisbon Treaty debate in a selection of British tabloids and broadsheets. In particular, this research project aims to explore the most recurring conceptual metaphors –MOVEMENT and CONFLICT– in order to show how these metaphors not only describe the scenario created by the Irish rejection of the treaty but also give information about Britain’s perception of the EU and its future.
Dighe in terra: previsione e monitoraggio degli effetti sismo-indotti
Creators: name: Brigante, Antonio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2010

description: La tesi è incentrata sullo studio dei danni indotti da eventi sismici su dighe in terra, con particolare riferimento agli scenari che si prospettano in Italia. A tal fine il lavoro esamina una case-history ben documentata e assoggettata in passato ad un evento sismico di forte intensità, la diga di Conza. I dati sperimentali relativi alla diga vengono collazionati, rappresentati attraverso procedure empiriche. Quindi la diga viene interpretata a mezzo di un approccio dinamico-accoppiato in tutte le sue fasi di vita, includendo il terremoto dell'Irpinia del 1980 cui essa è andata soggetta. Ciò consente di estrapolare i danni a possibili fasi evolutive della vita dell'opera che nella realtà non si sono verificate. Infine la tesi descrive un sistema di allarme, che include sia il modello di previone teorica, sia l'installazione di numerosi strumenti in sito per la misura delle accelerazioni e degli spostamenti.
Electronic Origin of the Inhomogeneous Pairing Interaction in the High-Tc Superconductor Bi2Sr2CaCu2O8+d
Creators: name: Pasupathy, Abhay N.
name: Pushp, Aakash
name: Gomes, Kenjiro K.
name: Parker, Colin V.
name: Wen, Jinsheng
name: Xu, Zhijun
name: Gu, Genda
name: Ono, Shimpei
name: Ando, Yoichi
name: Yazdani, Ali
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Identifying the mechanism of superconductivity in the high-temperature cuprate superconductors is one of the major outstanding problems in physics. We report local measurements of the onset of superconducting pairing in the high-transition temperature (Tc) superconductor Bi2Sr2CaCu2O8+d using a lattice-tracking spectroscopy technique with a scanning tunneling microscope. We can determine the temperature dependence of the pairing energy gaps, the electronic excitations in the absence of pairing, and the effect of the local coupling of electrons to bosonic excitations. Our measurements reveal that the strength of pairing is determined by the unusual electronic excitations of the normal state, suggesting that strong electron-electron interactions rather than low-energy (<0.1 volts) electron-boson interactions are responsible for superconductivity in the cuprates.
Hydrauliköle auf der Basis nachwachsender Rohstoffe
Creators: name: Römer, Axel
Publisher: name: LANDTECHNIK
Year: 1997

description: Der Beitrag befasst sich mit den Einsatzmöglichkeiten von biologisch schnell abbaubaren Ölen auf pflanzlicher Basis zur Verwendung in zentral versorgten Getriebe- und Hydrauliksystemen von Landmaschinen. ln Laborversuchen und Prüfstandsläufen mit Laufzeiten über 1000 Stunden werden ausgewählte Öle untersucht. Die Ergebnisse zeigen, dass die pflanzlichen Hydrauliköle in einem breiten Einsatzspektrum eingesetzt werden können. Die Prüfläufe mit dem am Institut für Landmaschinen und Fluidtechnik der TU Braunschweig entwickelten Versuchsstand ermöglichen weiterhin Aussagen über die Einsatzgrenzen und die Standzeiten der Öle.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
VITARIT: Paying for Threshold Services on Bitcoin and Friends
Creators: name: Hanzlik, Lucjan
name: Kate, Aniket
name: Mangipudi, Easwar Vivek
name: Mukherjee, Pratyay
name: Thyagarajan, Sri AravindaKrishnan
Publisher: name: CISPA
Year: 2025

description: Blockchain service offerings have seen a rapid rise
in recent times. Many of these services realize a decentralized
architecture with a threshold adversary to avoid a single
point of failure and to mitigate key escrow issues. While
payments to such services are straightforward in systems
supporting smart contracts, achieving fairness poses challenges
in systems like Bitcoin, adhering to the UTXO model with
limited scripting capabilities. This is especially challenging
without smart contracts, as we wish to pay only the required
threshold of t + 1 out of the n servers offering the service
together, without any server claiming the payment twice.

In this paper, we introduce VITARIT 1, a novel payment
solution tailored for threshold cryptographic services in UTXO
systems like Bitcoin. Our approach guarantees robust provable
security while facilitating practical deployment. We focus on
the t-out-of-n distributed threshold verifiable random function
(VRF) service with certain properties, such as threshold BLS
signatures, a recently highlighted area of interest. Our protocol
enables clients to request verifiable random function (VRF)
values from the threshold service, triggering payments to up
to t + 1 servers of the distributed threshold VRF.

Our efficient design relies on simple transactions using
signature verification scripts, making it immediately applicable
in Bitcoin-like systems. We also introduce new tools and
techniques at both the cryptographic and transaction layers,
including a novel signature-VRF exchange protocol for standard
constructions, which may be of independent interest. Addition-
ally, our transaction flow design prevents malicious servers
from claiming payments twice, offering broader implications for
decentralized payment systems. Our prototype implementation
shows that in the two-party interaction, the client takes 126.4
msec, and the server takes 204 msec, demonstrating practicality
and deployability of the system
Learning to Automatically Catch Potholes in Worldwide Road Scene Images
Creators: name: Yebes, J. Javier
name: Montero, David
name: Arriola, Ignacio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: I.4.8

description: Among several road hazards that are present in any paved way in the world, potholes are one of the most annoying and also involving higher maintenance costs. There exists an increasing interest on the automated detection of these hazards enabled by technological and research progress. Our research work tackled the challenge of pothole detection from images of real world road scenes. The main novelty resides on the application of the latest progress in AI to learn the visual appearance of potholes. We built a large dataset of images with pothole annotations. They contained road scenes from different cities in the world, taken with different cameras, vehicles and viewpoints under varied environmental conditions. Then, we fine-tuned four different object detection models based on Faster R-CNN and SSD deep neural networks. We achieved high average precision and the pothole detector was tested on the Nvidia DrivePX2 platform with GPGPU capability, which can be embedded on vehicles. Moreover, it was deployed on a real vehicle to notify the detected potholes to a given IoT platform as part of AUTOPILOT H2020 project.
description: in IEEE Intelligent Transportation Systems Magazine
Unparticle constraints from SN1987A
Creators: name: Hannestad, Steen
name: Raffelt, Georg
name: Wong, Yvonne Y. Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The existence of an unparticle sector, weakly coupled to the standard model, would have a profound impact on supernova (SN) physics. Emission of energy into the unparticle sector from the core of SN1987A would have significantly shortened the observed neutrino burst. The unparticle interaction with nucleons, neutrinos, electrons and muons is constrained to be so weak that it is unlikely to provide any missing-energy signature at colliders. One important exception are models where scale invariance in the hidden sector is broken by the Higgs vacuum expectation value. In this case the SN emission is suppressed by threshold effects.
description: 4 pages, 1 figure
The Energy-Level Shifts of a Stationary Hydrogen Atom in Static External Gravitational Field with Schwarzschild Geometry
Creators: name: Zhao, Zhen-Hua
name: Liu, Yu-Xiao
name: Li, Xi-Guo
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The first order perturbations of the energy levels of a stationary hydrogen atom in static external gravitational field, with Schwarzschild metric, are investigated. The energy shifts are calculated for the relativistic 1S, 2S, 2P, 3S, 3P, 3D, 4S, 4P, 4D and 4F levels. The results show that the energy-level shifts of the states with total angular momentum quantum number 1/2 are all zero, and the ratio of absolute energy shifts with total angular momentum quantum number 5/2 is 1:4:5. This feature can be used to help us to distinguish the gravitational effect from other effect.
description: 11 pages
Magneto-transport properties governed by the antiferromagnetic fluctuations in heavy fermion superconductor CeIrIn$_{5}$
Creators: name: Nakajima, Y.
name: Shishido, H.
name: Nakai, H.
name: Shibauchi, T.
name: Hedo, M.
name: Uwatoko, Y.
name: Matsumoto, T.
name: Settai, R.
name: Onuki, Y.
name: Kontani, H.
name: Matsuda, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In quasi-two dimensional Ce(Ir,Rh)In$_5$ system, it has been suggested that the phase diagram contains two distinct domes with different heavy fermion superconducting states. We here report the systematic pressure dependence of the electron transport properties in the normal state of CeRh$_{0.2}$Ir$_{0.8}$In$_{5}$ and CeIrIn$_{5}$, which locates in first and second superconducting dome, respectively. We observed non-Fermi liquid behavior at low temperatures in both compounds, including non-quadratic $T-$dependence of the resistivity, large enhancement of the Hall coefficient, and the violation of the Kohler's rule in the magnetoresistance. We show that the cotangent of Hall angle $\cot Θ_H$ varies as $T^2$, and the magnetoresistance is quite well scaled by the Hall angle as $Δρ_{xx}/ρ_{xx}\propto \tan^2Θ_H$. The observed transport anomalies are common features of Ce$M$In$_{5}$ ($M$=Co, Rh, and Ir) and high-$T_c$ cuprates, suggesting that the anomalous transport properties observed in CeIrIn$_{5}$ are mainly governed by the antiferromagnetic spin fluctuations, not by the Ce-valence fluctuations which has been proposed to be the possible origin for the second superconducting dome.
description: 8 pages, 7 figures, To be published in Phys. Rev. B
Bulges of disk galaxies at intermediate redshifts.II. Nuclear, disk and global colours in the Groth Strip
Creators: name: Dominguez-Palmero, Lilian
name: Balcells, Marc
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyse colours of the nuclear regions of intermediate redshift disk galaxies, with the aim of obtaining empirical information of relative ages of bulges and disks at 0.1 < z < 1.3. We work with an apparent-diameter limited parent sample of 248 galaxies from the HST Groth Strip Survey. We apply a conservative criterion to identify bulges and potential precursors of present-day bulges based on nuclear surface brightness excess above the exponential profile of the outer parts. We measure bulge colours on wedge profiles opening on the semi-minor axis, and compare them to disk, and global galaxy colours. For 60% of galaxies with bulges, the rest-frame nuclear colour distribution shows a red sequence that is well fit by passive evolution models of various ages, while the remainder 40% scatters towards bluer colours. In contrast, galaxies without central brightness excess show typical colours of star forming population and lack a red sequence. We also see that, as in the local Universe, most of the minor axis colour profiles are negative (bluer outward), and fairly gentle, indicating that nuclear colours are not distinctly different from disk colours. This is corroborated when comparing nuclear, global and disk colours: these show strong correlations, for any value of the central brightness prominence of the bulge. Comparison with synthetic models of red sequence bulge colours suggests that such red bulges have stopped forming stars at an epoch earlier than ~ 1 Gyr before the observation. The correlation between nuclear and disk colours and the small colour gradients hints at an intertwined star formation history for bulges and disks: probably, most of our red bulges formed in a process in which truncation of star formation in the bulge did not destroy the disk.
description: 13 pages, 9 figures, 5 tables. Accepted for publication in A&A
Myc-mediated transcription control of SAE1 and PUMA loci in cancer and reprogramming
Creators: name: Lubrano Lavadera, Miriam
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: The Myc oncogene is the most studied transcription factor in biology. It plays an important role in development and cancer biology regulating cell cycle and apoptosis. The Myc oncogene is also implicated in a variety of other cellular processes such as self-renewal, differentiation and reprogramming in which its involvement is less understood. Despite growing evidence linking increase of Myc protein to stem-like phenotypes in cancer, the mechanism underlying Myc’s contribution to the acquisition of “stemness” at a molecular level it is not yet clear.
To regulate its target genes, Myc binds to a specific sequence within DNA and mostly acts as a transcriptional activator. However, Myc down-regulates a small number of genes including PUMA and GADD45a the activity of which relies also upon FOXO3a transcription factor. In this study we have attempted i) to delineate the crosstalk between the Myc and FOXO3a pathways and ii) to suggest a molecular mechanism linking the increase of Myc protein and the consequent activation of its target genes to cell reprogramming.
The RAT and hT-RPE cell lines expressing a 4-hydroxytamoxifen-inducible MycER chimera have been used to address the first task, demonstrating that following induction, Myc is rapidly recruited to PUMA and GADD45a. Furthermore, a concomitant switch in promoter occupancy from FOXO3a to PUMA was observed. Myc recruitment stimulates deacetylation of H3 and H4 histones and methylation of the lysine 9 in H3 on both PUMA and GADD45a promoters leading to their downregulation. PUMA is a close neighbor of SUMO-activating enzyme 1 (SAE1) and whilst studying the regulation of PUMA, we observed a peak of RNA polymerase II in the second intron of the PUMA gene, responsible for activation of SAE1. We found that Myc activates SAE1 transcription via direct binding to canonical E-boxes in the vicinity of its transcription start site. The downregulation of PUMA and GADD45a and the up-regulation of SAE1 have also been seen in the heterogeneous primary murine mammary progenitor cells following their reprogramming into stem cells induced by Myc. On the contrary, when expression of Myc leads to the acquisition of ‘stemness’ within a homogeneous population of murine progenitor cells we observed up-regulation of PUMA while SAE1 was not affected, suggesting that in these cells the regulation of PUMA remains under the transcriptional control of p53.
Taken together, our data highlight a role for Myc in cell growth via the specific inhibition of FOXO3a-dependent transcription of PUMA and GADD45a and add a new insight in the context of Myc-driven oncogenesis. In fact, we show that, at least during Myc-mediated reprogramming of heterogeneous primary murine mammary progenitor cells, Myc activates directly SAE1 transcription. The activation of SAE1 has been previously shown by others as necessary for cancerous transformation.
Status Quo: Klassifikation interdisziplinärer Forschungsfelder – Präsentation aus "VIVO Talks!"
Creators: name: Prof. Vivien Petras, PhD
Publisher: name: Zenodo
Year: 2021
Subjects: vivo
vivo-de
kerndatensatz forschung
berlin university alliance
forschungsinformationssysteme

description: Präsentation zur ersten Ausgabe von „VIVO Talks!" mit Prof. Vivien Petras zum Thema „Klassifikation interdisziplinärer Forschungsfelder" vom 18. November 2021. Vivien Petras ist Direktorin des Instituts für Bibliotheks- und Informationswissenschaft der Humboldt-Universität zu Berlin. Im Jahr 2020 leitete sie mit Sophie Biesenbender (DZHW) das von Bund und Ländern geförderte Projekt zur Entwicklung einer Klassifikation für interdisziplinäre Forschungsfelder im Rahmen des Kerndatensatz Forschung (KDSF). In VIVO Talks! hat sie die Ziele und Zwecke von Forschungsfeldklassifikationen erörtert, das Projekt vorgestellt und Impulse und Herausforderungen für die Umsetzung in akademischen Organisationen diskutiert. VIVO Talks! wird organisiert vom Projekt-Team der Forschungsinformationsplattform mit VIVO an der Berlin University Alliance. Das Projekt zielt darauf ab, im Rahmen der Berlin University Alliance eine verbundweite Forschungsinformationsplattform für die Recherche, Sammlung und Darstellung von Wissenschaftlerinnen und Wissenschaftlern, ihrer Forschung und ihren Aktivitäten aufzubauen. Es ist gefördert vom Bundesministerium für Bildung und Forschung (BMBF) und dem Land Berlin im Rahmen der Exzellenzstrategie von Bund und Ländern durch die Berlin University Alliance.
Searching for Gravitational Waves from Binary Inspirals with LIGO
Creators: name: Brown, Duncan A.
name: Babak, Stanislav
name: Brady, Patrick R.
name: Christensen, Nelson
name: Cokelaer, Thomas
name: Creighton, Jolien D. E.
name: Fairhurst, Stephen
name: Gonzalez, Gabriela
name: Messaritaki, Eirini
name: Sathyaprakash, B. S.
name: Shawhan, Peter
name: Zotov, Natalia
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe the current status of the search for gravitational waves from inspiralling compact binary systems in LIGO data. We review the result from the first scientific run of LIGO (S1). We present the goals of the search of data taken in the second scientific run (S2) and describe the differences between the methods used in S1 and S2.
description: 9 pages, 2 figures. Published in proceedings of the 8th Gravitational Wave Data Analysis Workshop, Milwaukee, WI, USA, 17-20 December 2003
Analisi alla Micro-TC dell’ Anatomia Complessa del Primo Molare Superiore
Creators: name: Formisano, Anna
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: Il primo molare superiore presenta un'anatomia complessa tale da interessare numerosi studiosi nel corso dei decenni. Lo scopo di  questo lavoro  è stato caratterizzare l’anatomia esterna ed interna delle radici mesiovestibolare (MV), distovestibolare (DV) e palatale (P) del primo molare superiore mediante  microtomografia compiuterizzata (μCT). Particolare attenzione è stata posta nel trovare  la distanza orizzontale tra gli imbocchi principali MV1 della radice  mesiovestibolare e quelli dei secondi canali mesiovestibolari (MV2), la distanza verticale tra i piani in cui giacciono gli imbocchi MV1 e MV2 e la distanza tra l'apice anatomico e forame apicale maggiore (AF). Ventidue sesti molari superiori intatti estratti sono stati analizzati mediante  μct e le immagini 2D e 3D che ne sono derivate  sono stati elaborate e analizzate. I risultati hanno mostrato che il 77,27% delle radici MV  presentano un secondo canale MV2, e il 29,41% dei canali MV2 decorre completamente separato dai canali MV2.  In 15 denti sono presenti tre imbocchi a livello della camera pulpare; in  10 di essi benché non sia  visibile a livello della camera pulpare, il canale MV2 è presente. La distanza media verticale tra i piani passanti per MV1 e MV2 è di 1,68 ± 0,83 mm. Sette denti mostrano da subito quattro imbocchi. La distanza media orizzontale tra le gli imbocchi MV1 e MV2 è di 1,21 ± 0,5 mm. I canali accessori sono stati osservati nel 33,33% delle radici, i loop  nel 6,06%, mentre gli istmi stati trovati in 15 delle 22 radici mesiovestibolari. Delle radici in totale, il 74,24% presentano un solo forame, mentre tutte le radici mostrano un forame apicale maggiore (AF) non coincidente con l'apice anatomico. Questa analisi alla μCT fornisce interessanti considerazioni sulla distanza orizzontale e verticale tra gli imbocchi MV1 e MV2 e sulla distanza tra forame apicale maggiore (AF)  ed apice anatomico, nonché può rappresentare un importante ausilio per l’endodonzista nella conoscenza dell’anatomia complessa di questo elemento dentario, sostenendo in tal modo la corretta diagnosi, la strumentazione e l’otturazione del sistema dei canali radicolari.
Determination of the magnetic susceptibility of the quark condensate using radiative heavy meson decays
Creators: name: Rohrwild, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use a light-cone sum rule (LCSR) analysis of the branching ratios of radiative meson decays to contrain the value of the magnetic susceptibility of the quark condensate $χ(μ)$. For the first time, we use a complete set of three-particle distribution amplitudes that enables us to give a consistent prediction for the branching ratios. Furthermore we will make use of a very recent update of several non-perturbative parameters. Our final result for $χ(μ= 1 {\rm GeV})= 2.85 \pm 0.5 {\rm GeV}^{-2}$ (assuming asymptotic wave functions) agrees with the currently used value of $3.15 \pm 0.3 {\rm GeV}^{-2}$.
description: 21 pages, 4 figures, references added
Cognitive Radio Ad-hoc Networks: A Routing Perspective
Creators: name: Rahman, Md. Arafatur
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: Cognitive radio is considered the enabling technology of the dynamic spectrum access paradigm which is envisaged to solve the spectrum scarcity problem, thus facilitating the accommodation of new wireless services as well as providing an effective solution to the ever increasing user demand. It allows the unlicensed users to utilize dynamically and opportunistically the spectrum assigned to the primary users, when it is temporarily not used. To reach this aim, unlicensed users must be able to change their transmission and reception parameters to communicate with each other without causing interference to the primary users. The main objective of this thesis is to address the routing problem under the challenging scenario characterized by the uncertain availability of the spectral resource. The routing problem is furthermore challenging in presence of primary user’s mobility. To deal with this scenario, we proposed to utilize jointly path and spectrum diversity in routing to assure an improved spectral efficiency. We also proposed a mobility-aware channel-availability based channel selection technique, which performs the best channel selection in terms of spectrum availability in presence of primary user’s mobility. Performance evaluation is conducted through simulations, and the simulation results reveal the benefits of introducing the proposed proposals.