cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The inner cavity of the circumnuclear disc
Creators: name: Blank, Marvin
name: Morris, Mark R.
name: Frank, Adam
name: Carroll-Nellenback, Jonathan J.
name: Duschl, Wolfgang J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The circumnuclear disc (CND) orbiting the Galaxy's central black hole is a reservoir of material that can ultimately provide energy through accretion, or form stars in the presence of the black hole, as evidenced by the stellar cluster that is presently located at the CND's centre. In this paper, we report the results of a computational study of the dynamics of the CND. The results lead us to question two paradigms that are prevalent in previous research on the Galactic Centre. The first is that the disc's inner cavity is maintained by the interaction of the central stellar cluster's strong winds with the disc's inner rim, and second, that the presence of unstable clumps in the disc implies that the CND is a transient feature. Our simulations show that, in the absence of a magnetic field, the interaction of the wind with the inner disc rim actually leads to a filling of the inner cavity within a few orbital time-scales, contrary to previous expectations. However, including the effects of magnetic fields stabilizes the inner disc rim against rapid inward migration. Furthermore, this interaction causes instabilities that continuously create clumps that are individually unstable against tidal shearing. Thus the occurrence of such unstable clumps does not necessarily mean that the disc is itself a transient phenomenon. The next steps in this investigation are to explore the effect of the magnetorotational instability on the disc evolution and to test whether the results presented here persist for longer time-scales than those considered here.
description: 18 pages, 11 figures, accepted by MNRAS
Multilingual awareness-raising as a pedagogical tool in the initial stage of L3 teaching
Creators: name: Horváth, Lilla
name: Jessner, Ulrike
Publisher: name: Pannon Egyetem
Year: 2023

description: Alkalmazott nyelvtudomány, vol. 23. issue 1. ISSN 1587-1061, eISSN 2498-4442
Reflection Of Propagating Slow Magneto-acoustic Waves In Hot Coronal Loops : Multi-instrument Observations and Numerical Modelling
Creators: name: Mandal, Sudip
name: Yuan, Ding
name: Fang, Xia
name: Banerjee, Dipankar
name: Pant, Vaibhav
name: Van Doorsselaere, Tom
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Slow MHD waves are important tools for understanding the coronal structures and dynamics. In this paper, we report a number of observations, from X-Ray Telescope (XRT) on board HINODE and SDO/AIA of reflecting longitudinal waves in hot coronal loops. To our knowledge, this is the first report of this kind as seen from the XRT and simultaneously with the AIA. The wave appears after a micro-flare occurs at one of the footpoints. We estimate the density and the temperature of the loop plasma by performing DEM analysis on the AIA image sequence. The estimated speed of propagation is comparable or lower than the local sound speed suggesting it to be a propagating slow wave. The intensity perturbation amplitudes, in every case, falls very rapidly as the perturbation moves along the loop and eventually vanishes after one or more reflections. To check the consistency of such reflection signatures with the obtained loop parameters, we perform a 2.5D MHD simulation, which uses the parameters obtained from our observation as inputs and performed forward modelling to synthesize AIA 94~Å images. Analyzing the synthesized images, we obtain the same properties of the observables as for the real observation. From the analysis we conclude that a footpoint heating can generate slow wave which then reflects back and forth in the coronal loop before fading out. Our analysis on the simulated data shows that the main agent for this damping is the anisotropic thermal conduction.
description: Accepted for publication in ApJ, accepted version
An Anti-Jamming Technique by Jammer Localization for Multi-Channel Wireless Sensor Networks
Creators: name: IJCNC
Publisher: name: Zenodo
Year: 2024

description: A jamming attack is a serious security threat for Wireless Sensor Networks (WSN) in which adversaries intentionally emit radio frequency signals to corrupt ongoing transmission. Several anti-jamming techniques have been devised as countermeasures against jamming attacks. These techniques detect jamming relying on the parameters such as Packet Delivery Ratio (PDR), Packet Send Ratio (PSR), Received Signal Strength Indication (RSSI), and Signal-to-Noise Ratio (SNR). On the other hand, energy efficiency is a significant issue for WSN and is a dominating factor for network lifetime. To prolong the network lifetime, WSN is organized into clusters where each cluster head transmits aggregated data to the base station directly or using multi-hop. In this research work, a jamming attack in a clustering-based WSN is investigated. Jamming attack in a clustered WSN affects drastically and makes clusters ineffective. As a result, WSN may experience delay in transmission, and a reduction in network throughput. To overcome jamming attacks, an effective jamming localizing scheme is proposed where parameters such as Jamming Signal Strength (JSS), PDR, etc., are considered in detecting jamming attacks, and then the jammed region is localized by finding convex hull using detected jammed nodes. To continue transmission in the presence of jamming, a cluster-based multi-channel assignment technique is also proposed to avoid the channels that are thwarting transmission efficiency and to select a new channel for the jammed cluster dynamically. The simulation results reveal the efficiency of the proposed scheme in identifying the presence of the jammer in the network, reduction in packet loss due to jamming attack, and this improving throughput.
STRATEGIC PLANNING FOR THE DEVELOPMENT OF ARCTIC OIL RESERVES IN MODERN GEOPOLITICAL CONDITIONS
Creators: name: Плотников, Владимир
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 380118
subject: Urban and regional economics

description: The article provides a comparative analysis of oil and gas revenues dynamic recently, the im-portance of Arctic region development is determined in part of oil reserves mastering for Russian economy, the main directions of industry development in modern conditions are considered.
Magyar magánhangzók akusztikai szerkezetének sajátosságai spontán beszédben és felolvasásban
Creators: name: Buza, Ákos
name: Deme, Andrea
Publisher: name: Pannon Egyetem
Year: 2023

description: Alkalmazott nyelvtudomány, vol. 23. issue 1. ISSN 1587-1061, eISSN 2498-4442
Quasinormal modes and a new instability of Einstein-Gauss-Bonnet black holes in the de Sitter world
Creators: name: Cuyubamba, M. A.
name: Konoplya, R. A.
name: Zhidenko, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Analysis of time-domain profiles for gravitational perturbations shows that Gauss-Bonnet black holes in a de Sitter world possess a new kind of dynamical instability which does not take place for asymptotically flat Einstein-Gauss-Bonnet black holes. The new instability is in the gravitational perturbations of the scalar type and is due to the nonvanishing cosmological constant. Analysis of the quasinormal spectrum in the stability sector shows that although the scalar type of gravitational perturbations alone does not obey Hod's conjectural bound, connecting the damping rate and the Hawking temperature, the vector and tensor types (and thereby the gravitational spectrum as a whole) do obey it.
description: 9 pages, 8 figures
Unidirectional Secure Information Transfer via RabbitMQ
Creators: name: Maatkamp, Marcel
name: van Delden, Martin
name: LeKhac, Nhien An
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Protecting computer systems handling possible sensitive information is of the utmost importance. Those systems are typically air-gapped with data diodes to assure that no information can physically flow back. Traditional computer protocols like HTTP or SOAP which are normally used to transport information between computers are typical bi-directional communication protocols and are thus unsuitable to be used over a data diode. Currently the only commercially available protocols over a data diode sold by vendors are file-based protocols. Other protocols can be custom made but are expensive and proprietary. There are currently no open source solutions to stream data in a generic way over a data diode other than those file-based solutions. Purpose of the dissertation is to research if open source technology can be used to mirror the contents of a messagebus over a data diode to get a cost effective security-proof and almost maintenance-free solution. and to further research if this technology can be used to transfer not only plain text data but also data sensitive by nature by using end-to-end encryption so that this information could even be admitted as evidence. Method used to validate the research is a practical case study that shows how a sensor stream can send unencrypted and encrypted events over a data diode of arbitrary size via a message bus which are transparently and securely transferred and re-emitted internally without any kind of configuration management. Results show that it is indeed possible to successfully mirror data from a Message Bus over a data diode and it is thus worthwhile to further invest in this technology.
The Democratisation of Photography and the Promotion of Tourism: the Polytechnic Touring Association (1888-1939)
Creators: name: Dominici, Sara
Publisher: name: University of Westminster
Year: 2014

description: The aim of this thesis is to explore a specifi c aspect of the relationship between photography and tourism, that is, how the democratisation of photography infl uenced the marketing of tourism in the late nineteenth and early twentieth century. It focuses on the fi rst fi fty years of activity of the Polytechnic Touring Association (PTA), an initially philanthropic turned commercial travel fi rm, whose historical origins coincided with the Kodak-led emergence of popular photography in 1888. During this period, the travel fi rm moved from using photography-based images to rely increasingly on mixed media, including drawings and graphic design. This use of new representational media was certainly a response to new market demands; if and how a new approach to photography also infl uenced it, however, is still an unexplored question. By taking as its principal primary source the PTA archive, this research thus seeks to establish the extent to which such a shift can also be explained by accounting for the transformed perception engendered by new photographic practices. The thesis begins with an examination of how practices of photographic production and consumption might relate to changing understandings of photography and travel, and their consequent infl uence on the demand for and representation of tourism. It then moves on to consider this relationship between tourism and tourist practices in the context of the social and cultural changes that saw the emergence and development of mass photography, tourism, and tourism marketing from the late nineteenth century. The specifi c representational choices made by the PTA to promote its tours are then investigated against this historical background. Specifi cally, these are explored in relation to the changing function of the tours, and, in a related way, to the perception of tourists as evidenced by their practices, in particular photographic ones. Overall, this investigation argues that the multiplicity of photographic perspectives engendered by the democratisation of photography, and a related transformation of the value attached to the photograph, resulted in an organisation such as the PTA reconsidering how best to represent itself in light of a shift from broadly educational concerns to emergent commercial imperatives.
Characterization of MC3 and the other melancortin receptors (MC) in the hypothalamo-pituitary-gonadal system of the mouse
Creators: name: Dowejko, Monika
Publisher: name: University of Westminster
Year: 2014

description: Melanocortin receptors (MC, MC1–MC5) are GPCRs, activated with different affinities by the melanocortin peptides (α-, β-, γ-MSH and ACTH). MC3 has well characterised roles in both the central regulation of energy metabolism and peripheral inflammatory responses. The functions and distribution of MC3 and the other MC in tissues of the reproductive system are unclear. Compared to wild type mice (WT), an apparent decrease in fertility of MC3 null mice (MC3-/-) has been observed and hence it was the aim of this series of studies to characterize MC3 and the other MC in tissues of the mouse hypothalamo-pituitary-gonadal (HPG) system. The relative mRNA expressions of the MC have been identified at each level of the HPG axes in both male and female mice. It appeared that the MC mRNA expression may be regulated by the reproductive state of an animal and may change with age. Two different forms of POMC mRNA have been confirmed in the reproductive axes of both genders implicating local melanocortin production. Localization of MC3 protein was unsuccessful due to a lack of specificity of all the antibodies applied. Ablation of MC3 led to a decrease in the total pituitary hormone content in both male and female mice. The histology of testes of MC3-/- mice at different ages were abnormal compared to WT. In vitro incubation of hemi-sected testes of Balb/c or C57BL/6 mice in varying concentrations of selective MC3 agonist had modulatory, although non-significant, effects on testosterone production. However, MC3 activation during an inflammatory-like state in the testis, inhibited nitrite production but had no effects on the release of cytokines. The inhibitory action of MC3 agonist on nitrite release was also apparent in the K9 Leydig cell line, which expresses all five isoforms of MC. MC3 may be both directly and/or indirectly implicated in the control of the mouse HPG system. The anti-inflammatory action of testicular MC3 activation could lead to possible clinical applications of MC3 agonists in the treatment of inflammatory situations associated with the loss of fertility.
Angol és német nyelv és nyelvtanár szakos hallgatók szótárhasználati szokásainak és a szótárhasználat oktatásához kapcsolódó attitűdjeinek modellezése
Creators: name: Fajt, Balázs
name: P. Márkus, Katalin
Publisher: name: Pannon Egyetem
Year: 2023

description: Alkalmazott nyelvtudomány, vol. 23. issue 1. ISSN 1587-1061, eISSN 2498-4442
Archive Earth: Ambiguous Conversations and Conversions
Creators: name: Allen, Jamie
Publisher: name: My University
Year: 2021
Subjects: subject: 700 - Künste und Unterhaltung

description: For the journal Roadsides, Archive Earth is a visual and textual essay that explores Earth as a home, a resource for industry and markets, a repository for traces of conjoined natural and human histories, and a laboratory for the measurement of planetary phenomena. The essay explores the social, cultural and political life of infrastructure through aphoristic text, global fieldwork footages from Chile, Canada, Finland, and elsewhere, and perspectival voices: “I have already said that we think like the world; now I am saying that the world thinks like us”, as Michel Serres wrote in 2017.
title: Pschyrembel Online – Suchen. Finden. Sicher sein.
Creators: name: Gruyter, De
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Pschyrembel Online: Die Datenbank für gesichertes medizinisches und pharmazeutisches Fachwissen gibt es seit diesem Jahr mit neuer Benutzeroberfläche und erweiterten Inhalten. Alle klinisch relevanten Fachbegriffe sind mit Fotos, Grafiken und Tabellen angereichert und werden regelmäßig[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Jahrestagung der Arbeitsgemeinschaft für medizinisches Bibliothekswesen (AGMB)
title: Stand der HzV in Deutschland, Strategie des Deutschen Hausärzteverbandes (DHÄV)
Creators: name: Mehl, E.
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: Hausarztzentrierte Versorgung
subject: Versorgungsqualität
subject: 610 Medical sciences; Medicine

description: Hintergrund: Der Auftrag des Gesetzgebers nach §73b SGBV, Verträge zur hausarztzentrierten Versorgung (HzV) zu schließen, hat sich inzwischen in einer Vielzahl von regional und nach Kassenart spezifischen Verträgen niedergeschlagen, die sich zudem nach Versorgungsmodell (Vollversorgung[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 50. Kongress für Allgemeinmedizin und Familienmedizin
title: Protektiver Effekt einer Parese auf Progress einer rheumatoiden Arthritis
Creators: name: Hartig, Ingo
name: Braun, Matthias
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: peripheren Paresen
subject: Steuerungsmechanismen der Immunkompetenz
subject: Inselrinde
subject: 610 Medical sciences; Medicine

description: Einleitung: Bei Patienten mit zentralen oder peripheren Paresen wird beobachtet, dass eine gleichzeitig bestehende entzündlich-rheumatische Erkrankung die paretische Extremität deutlich weniger ausgeprägt befällt. Methoden: Wir berichten über eine 69-jährige Patientin,[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 44. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 30. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 26. Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
title: 2016 update of the ASAS-EULAR management recommendations for axial spondyloarthritis
Creators: name: Braun, Jürgen
name: Ramiro, Sofia
name: Landewé, Robert
name: Baraliakos, Xenofon
name: Van Den Bosch, Filip
name: Sepriano, Alexandre
name: Regel, Andrea
name: Ciurea, Adrian
name: Dagfinrud, Hanne
name: Dougados, Maxime
name: Van Gaalen, Floris
name: Géher, Pál
name: Van Der Horst-Bruinsma, Irene
name: Inman, Robert
name: Jonkees, Merryn
name: Kiltz, Uta
name: Kvien, Tore
name: Machado, Pedro
name: Marzo-Ortega, Helena
name: Molto, Anna
name: Navarro-Compan, Victoria
name: Özgözmen, Salih
name: Pimentel Dos Santos, Fernando
name: Reveille, John
name: Rudwaleit, Martin
name: Sieper, Joachim
name: Sampaio Barros, Percival
name: Wiek, Dieter
name: Van Der Heijde, Desiree
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: ankylosierende spondylitis
subject: leitlinien
subject: ASAS
subject: 610 Medical sciences; Medicine

description: Background: In 2010 the latest ASAS-EULAR recommendations for ankylosing spondylitis and the ASAS recommendations for the use of TNF-inhibitors (TNFi) have been published. Since then new treatments for axial Spondyloarthritis (axSpA) have become available. Aim: To update and integrate the two sets[for full text, please go to the a.m. URL]
description: 44. Kongress der Deutschen Gesellschaft für Rheumatologie (DGRh); 30. Jahrestagung der Deutschen Gesellschaft für Orthopädische Rheumatologie (DGORh); 26. Jahrestagung der Gesellschaft für Kinder- und Jugendrheumatologie (GKJR)
Fogalmi metaforák köznyelvtől szaknyelvig: Az Elméletek épületek és A folyamat utazás megjelenési formái változatos szövegtípusokban
Creators: name: Sólyom, Réka
Publisher: name: Pannon Egyetem
Year: 2023

description: Alkalmazott nyelvtudomány, vol. 23. issue 1. ISSN 1587-1061, eISSN 2498-4442
title: Neutrophile Granulozyten werden durch die extrazelluläre polymere Substanz von Staph. epidermidis Biofilmen aktiviert
Creators: name: Dapunt, Ulrike
name: Gaida, Matthias
name: Maurer, Susanne
name: Meyle, Eva
name: Fouchard, Philippe
name: Prior, Birgit
name: Hänsch, Gertrud Maria
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: Biofilm-Infektionen
subject: Immunabwehr
subject: bakterielles heat shock protein GroEL
subject: 610 Medical sciences; Medicine

description: Fragestellung: Viele Bakterienspezies bilden auf künstlichen Oberflächen sogenannte Biofilme. Bei dieser spezialisierten Lebensform adhärieren Bakterien an Oberflächen, z.B. dem Implantat, und produzieren eine extrazelluläre polymere Substanz ("Schleim"), in welche[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
title: Totaler Humerusersatz mit dem MUTARS ™ System nach Resektion von primären oder sekundären malignen Knochentumoren – eine systematische Analyse der Ursachen für ein Implantatversagen
Creators: name: Andreou, Dimosthenis
name: Bröking, Jan Niklas
name: Gosheger, Georg
name: Wilhelmy, Julia
name: Henrichs, Marcel-Philipp
name: Nottrott, Markus
name: Hardes, Jendrik
name: Streitbürger, Arne
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: Knochentumoren
subject: totaler Humerusersatz
subject: Tumorendoprothese
subject: Komplikationen
subject: Versagen
subject: 610 Medical sciences; Medicine

description: Fragestellung: Der Humerus ist die dritthäufigste Lokalisation von Knochensarkomen und die zweithäufigste Lokalisation von Metastasen im Bereich der Röhrenknochen. Bei ausgedehnten Tumoren kann die Resektion und Rekonstruktion mit einer totalen Humerusersatzprothese eine sinnvolle Alternative[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
title: Patellofemoral joint geometry parameters as risk factors for pattellar chondral defects development
Creators: name: Mouzopoulos, Georgios
name: Vlachos, Christos
name: Karantzalis, Leonidas
name: Vlachos, Konstantinos
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: patellofemoral
subject: chondral
subject: defects
subject: 610 Medical sciences; Medicine

description: Objectives: To determine any association between geometry parameters of the patellofemoral joint measured on Magnetic Resonance Images (MRI) and patellar chondral defects. Methods: In this prospective study, 64 patients (18 female, 46 male, mean age 37.4±3.1) with arthroscopically seen chondral[for full text, please go to the a.m. URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
Bringing politics and administration together: for an agonistic policy model
Creators: name: Fortis, Martin
Publisher: name: University of Westminster
Year: 2014
Subjects: Agonism, Mouffe, public policy, conflict, democracy

description: This thesis offers a new answer for an old question. Since the inception of public policy and administrative studies, the field has grappled with the problem of how to define the relationship between politics and administration. An examination of the policy literature suggests the existence of two major views: disjunctive and integrative. On one hand, those scholars who favour a disjunctive view construe politics and administration as mutually exclusive spheres. In this case, the study of policy and administration tends to emphasize the technical aspects and ignore the political factors. On the other hand, theorists who embrace an integrative view suggest that administration is fundamentally a political activity. Expanding the focus beyond managerial concerns, integrative scholars argue that public policies should not be confined to technocratic styles of policy-making that inhibit citizen engagement and depoliticize the public sphere. In spite of their commendable attention to politics, however, integrative theorists (particularly those embracing an interpretive orientation or a deliberative approach) have not yet been able to convincingly delineate a policy model that fully recognizes the political. The key argument of this thesis is that an agonistic vision has a strong potential to think politics and administration together that has not yet been considered by contemporary policy scholarship. Drawing on the work of Chantal Mouffe, the Agonistic Policy Model (APM) proposed here attempts to fill an important gap in the literature. Although agonistic theories have been widely recognized in the academic discipline of political science, they have not yet been translated into an implementable policy model. It is argued that an APM elucidates how politics and administration can be construed as interdependent spheres, thus offering a solution that helps to envisage how the political can be properly integrated into public policy and administration. In addition, besides an original interpretation of the policy process, the APM provides an innovative way of thinking how policy-making can contribute to deepen democratic values and institutions.
An economic analysis of the councils of the United Nations
Creators: name: Gould, Matthew
Publisher: name: University of Westminster
Year: 2014

description: This thesis consists of three pieces of research focussed on the Councils of the United Nations, predominantly the United Nations Security Council (UNSC). We consider three broad questions: which countries typically get on to the UNSC in its current form; which countries ought to get on to the UNSC; and how well might proposed changes to the UNSC steer it towards such ideals. In order to address the latter two questions it is sensible to begin by investigating how the current system works and if there are any particular characteristics which influence the chances of a country being elected to the UNSC. In Chapter 2 we develop a model to test the significance of a country’s characteristics on their probability of election to the UNSC. Chapter 3 then starts by developing a set of theoretical tests which can be applied to council voting systems, such as the selection of UNSC members from the UN General Assembly. The tests score a voting system based on how well the distribution of power in the council meets the power one would expect under a system where country representatives cast their vote in the council based on the outcomes of country or regional-level referendums. We then apply this, using the implied probabilities of election which are a consequence of the results of Chapter 2, to the UNSC election process. We then finish by applying the tests of Chapter 3, which consider how equitable a proposal is, together with a further test of procedural efficiency, to each of the proposed reforms to the UNSC election process.
Hotspots in the southwestern Atlantic Ocean
Creators: name: Bjerknes Centre for Climate Research
name: University of Bergen
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Coastal ecosystems
subject: Ecosystems
subject: Oceanography
subject: FOS: Earth and related environmental sciences
subject: Physical oceanography
subject: Climatic changes
subject: Fisheries

description: Factsheets on hotspots in the southwestern Atlantic Ocean. 

The biodiversity of the South Brazil Shelf is closely related to processes in the ocean. Fluctuations in the ocean are carried through the food chain, from nutrients to algae and further on to fish, birds and mammals. Three main biodiversity hotspots have been identified. These are located in regions where currents and upwelling support high levels of nutrients and biological production. 

Available in English, French and Portuguese.

Created for the EU Horizon 2020 project TRIATLAS, under grant agreement No 817578.
The extent of mixing in stellar interiors: the open clusters Collinder 261 and Melotte 66
Creators: name: Drazdauskas, Arnas
name: Tautvaišienė, Gražina
name: Randich, Sofia
name: Bragaglia, Angela
name: Mikolaitis, Šarūnas
name: Janulis, Rimvydas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: Determining carbon and nitrogen abundances in red giants provides useful diagnostics to test mixing processes in stellar atmospheres. Aims: Our main aim is to determine carbon-to-nitrogen and carbon isotope ratios for evolved giants in the open clusters Collinder 261 and Melotte 66 and to compare the results with predictions of theoretical models. Methods: High-resolution spectra were analysed using a differential model atmosphere method. Abundances of carbon were derived using the C_2 Swan (0,1) band head at 5635.5 A. The wavelength interval 7940-8130 A, which contains CN features, was analysed to determine nitrogen abundances and carbon isotope ratios. The oxygen abundances were determined from the [O_I] line at 6300 A. Results: The mean values of the elemental abundances in Collinder 261, as determined from seven stars, are: [C/Fe]=-0.23 +- 0.02 (s.d.), [N/Fe]=0.18 +- 0.09, [O/Fe]=-0.03 +- 0.07. The mean 12^C/13^C ratio is 11 +- 2, considering four red clump stars and 18 for one star above the clump. The mean C/N ratios are 1.60 +- 0.30 and 1.74, respectively. For the five stars in Melotte 66 we obtained: [C/Fe]=-0.21 +- 0.07 (s.d.), [N/Fe]=0.17 +- 0.07, [O/Fe]=0.16 +- 0.04. The 12^C/13^C and C/N ratios are 8 +- 2 and 1.67 +- 0.21, respectively. Conclusions: The 12^C/13^C and C/N ratios of stars in the investigated open clusters were compared with the ratios predicted by stellar evolution models. The mean values of 12^C/13^C ratios in Collinder 261 and Melotte 66 agree well with models of thermohaline-induced extra-mixing for the corresponding stellar turn-off masses of about 1.1 - 1.2 Msun. The mean C/N ratios are not decreased as much as predicted by the model in which the thermohaline- and rotation-induced extra-mixing act together.
description: 6 pages, 8 figures
Integral formulae for codimension-one foliated Randers spaces
Creators: name: Rovenski, Vladimir
name: Walczak, Paweł
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Integral formulae for foliated Riemannian manifolds provide obstructions for existence of foliations or compact leaves of them with given geometric properties. This paper continues our recent study and presents new integral formulae and their applications for codimension-one foliated Randers spaces. The goal is a generalization of Reeb's formula (that the total mean curvature of the leaves is zero) and its companion (that twice total second mean curvature of the leaves equals to the total Ricci curvature in the normal direction). We also extend results by Brito, Langevin and Rosenberg (that total mean curvatures of arbitrary order for a codimension-one foliated Riemannian manifold of constant curvature don't depend on a foliation). All of that is done by a comparison of extrinsic and intrinsic curvatures of the two Riemannian structures which arise in a natural way from a given Randers structure.
description: 17 pages. arXiv admin note: text overlap with arXiv:1602.00610
Knowledge management capabilities in social enterprises
Creators: name: Granados Ortiz, Maria
Publisher: name: University of Westminster
Year: 2014

description: Many studies have researched how organisations can benefit from Knowledge Management (KM). Critical factors, models and frameworks for successful implementations of KM have informed practitioners in different industries and countries. However, there is still a need for exploring other dimensions of KM as well as its application in different contexts. Further empirical evidence and operationalisation, which assure successful implementations, is also needed to improve not only companies but also society in general. Building on that observation, this study presents conceptual and empirical evidence to support the view that KM, understood as an organisational capability, improves organisational performance of the under-researched and increasingly important Social Enterprises (SEs). These, normally micro and small organisations, are gaining worldwide attention and importance as they address, following business principles, crucial social and environmental problems and provide more sustainable solutions. Nevertheless, there is still a lack of empirical evidence of how these organisations operate, perform and scale up. The study supports this view by developing and empirically testing a model named Knowledge Management Capabilities in Social Enterprises (KMC-SE), which is the main contribution to knowledge of this study. The model describes the organisational pre-conditions and the knowledge activities that can develop Knowledge Management Capabilities (KMCs), which then have an impact on SEs’ performance. A sequential, explanatory, mixed methods’ research design was followed to test the model with empirical evidence from 432 SEs in the UK. The evidence suggests that current KMCs account for up to 20% of overall improvements in SEs’ performance, based on a year-to-year comparison. Moreover, the KMC-SE Model proposes new insights in the traditional way of approaching KM and KMC development, highlighting (a) the important role of human and cultural factors, giving less emphasis to extrinsic motivations and technology, (b) the importance of studying informal KM practices, and (c) the essential inclusion of external dimensions into the equation. Because of the limited research in organisational characteristics of SEs, and more specifically, their KM practices, the KMC-SE Model may have omitted other important elements that were particular to these organisations in their development of KMCs, as well as their performance measures. Therefore, the obtained KMC-SE Model needs to be considered as only a starting point in the study of KM in SEs.
Eliminating light shifts in single-atom optical traps
Creators: name: Hutzler, Nicholas R.
name: Liu, Lee R.
name: Yu, Yichao
name: Ni, Kang-Kuen
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Microscopically controlled neutral atoms in optical tweezers and lattices have led to exciting advances in the study of quantum information and quantum many-body systems. The light shifts of atomic levels from the trapping potential in these systems can result in detrimental effects such as fluctuating dipole force heating, inhomogeneous detunings, and inhibition of laser cooling, which limits the atomic species that can be manipulated. In particular, these light shifts can be large enough to prevent loading into optical tweezers directly from a magneto-optical trap. We present a general solution to these limitations by loading, cooling, and imaging single atoms with temporally alternating beams. Because this technique does not depend on any specific spectral properties, we expect it to enable the optical tweezer method to control nearly any atomic or molecular species that can be laser cooled and optically trapped. Furthermore, we present an analysis of the role of heating and required cooling for single atom tweezer loading.
title: Revitalisierte, aviäre Xenografts als Zukunft des Sehnengraftings
Creators: name: Thoennes, Simon
name: Shelton, Peter
name: Van Dyke, Mark
name: Bracey, Daniel
name: Whitlock, Patrick
name: Smith, Thomas
name: Moghaddam-Alvandi, Arash
name: Tuohy, Christopher
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: Tissue Engineering
subject: Sehne
subject: Xenograft
subject: Revitalisierung
subject: Besiedelung
subject: Confocale Laser Mikroskopie
subject: 610 Medical sciences; Medicine

description: Fragestellung: Xenografts bieten aufgrund ubiquitärer Verfügbarkeit eine vielversprechende Option für Band- und Sehnenrekonstruktion. Diese Studie untersucht, welche Besiedelungsmethode bei der Revitalisierung aviärer, dezellularisierter Xenografts effizient ist, ob die Grafts[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2016)
Bi-gyrogroup: The group-like structure induced by bi-decomposition of groups
Creators: name: Suksumran, Teerapong
name: Ungar, Abraham A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: Primary 20N02, Secondary 22E43, 15A66, 20N05, 15A30

description: The decomposition $Γ=BH$ of a group $Γ$ into a subset $B$ and a subgroup $H$ of $Γ$ induces, under general conditions, a group-like structure for $B$, known as a gyrogroup. The famous concrete realization of a gyrogroup, which motivated the emergence of gyrogroups into the mainstream, is the space of all relativistically admissible velocities along with a binary operation given by the Einstein velocity addition law of special relativity theory. The latter leads to the Lorentz transformation group $\mathrm{SO}(1,n)$, $n\in\mathbb{N}$, in pseudo-Euclidean spaces of signature $(1, n)$. The study in this article is motivated by generalized Lorentz groups $\mathrm{SO}(m, n)$, $m, n\in\mathbb{N}$, in pseudo-Euclidean spaces of signature $(m, n)$. Accordingly, this article explores the bi-decomposition $Γ= H_LBH_R$ of a group $Γ$ into a subset $B$ and subgroups $H_L$ and $H_R$ of $Γ$, along with the novel bi-gyrogroup structure of $B$ induced by the bi-decomposition of $Γ$. As an example, we show by methods of Clifford algebras that the quotient group of the spin group $\mathrm{spin}(m, n)$ possesses the bi-decomposition structure.
description: The published version of the article is accessible via http://mir.kashanu.ac.ir/article_13911_2153.html
title: Zusammenarbeit von Hausärzten und anderen ärztlichen Leistungserbringern bei der Versorgung von Krebspatienten
Creators: name: Koné, Insa
name: Engler, Jennifer
name: Klein, Gudrun
name: Dahlhaus, Anne
name: Siebenhofer, Andrea
name: Güthlin, Corina
Publisher: name: German Medical Science GMS Publishing House
Year: 2016
Subjects: subject: 610 Medical sciences; Medicine

description: Hintergrund: Eine Krebserkrankung ist für Patienten belastend und bedeutet häufig Veränderungen in vielen Lebensbereichen. Hausärzte als langjährige ärztliche Vertrauenspersonen scheinen in dieser Zeit zusätzlich an Bedeutung zu gewinnen. Das zeigt sich an erhöhten[zum vollständigen Text gelangen Sie über die oben angegebene URL]
description: 15. Deutscher Kongress für Versorgungsforschung
Resonance Reaction in Diffusion-Influenced Bimolecular Reactions
Creators: name: Kolb, Jakob J.
name: Angioletti-Uberti, Stefano
name: Dzubiella, Joachim
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the influence of a stochastically fluctuating step-barrier potential on bimolecular reaction rates by exact analytical theory and stochastic simulations. We demonstrate that the system exhibits a new resonant reaction behavior with rate enhancement if an appropriately defined fluctuation decay length is of the order of the system size. Importantly, we find that in the proximity of resonance the standard reciprocal additivity law for diffusion and surface reaction rates is violated due to the dynamical coupling of multiple kinetic processes. Together, these findings may have important repercussions on the correct interpretation of various kinetic reaction problems in complex systems, as, e.g., in biomolecular association or catalysis.
description: JCP Communication, in press
Images of osteoblasts on screws of dental implants
Creators: name: Heitz, Johannes
name: Muck, Martina
Publisher: name: Zenodo
Year: 2023
Subjects: Medical implant
Laser processing
Osteoblasts

description: The deliverable provides a collection of SEM images of osteoblasts on screws of dental implants.
description: This report is part of the project LaserImplant that has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 951730.
Quantum coherence of the molecular states and their corresponding currents in nanoscale Aharonov-Bohm interferometers
Creators: name: Liu, Jian-Heng
name: Tu, Matisse Wei-Yuan
name: Zhang, Wei-Min
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: By considering a nanoscale Aharonov-Bohm (AB) interferometer containing a parrallel-coupled double dot coupled to the source and drain electrodes, we investigate the AB phase oscillations of transport current via the bonding and antibonding state channels. The results we obtained justify the experimental analysis given in [Phys. Rev. Lett. \textbf{106}, 076801 (2011)] that bonding state currents in different energy configurations are almost the same. On the other hand, we extend the analysis to the transient transport current components flowing through different channels, to explore the effect of the parity of bonding and antibonding states on the AB phase dependence of the corresponding current components in the transient regime. The relations of the AB phase dependence between the quantum states and the associated current components are analyzed in details, which provides useful information for the reconstruction of quantum states through the measurement of the transport current in such systems. With the coherent properties in the quantum dot states as well as in the transport currents, we also provide a way to manipulate the bonding and antibonding states by the AB magnetic flux.
description: 10 pages, 7 figures
On Optimizing Cooperative Cognitive User Performance under Primary QoS Constraints
Creators: name: Elmahdy, Adel M.
name: El-Keyi, Amr
name: ElBatt, Tamer
name: Seddik, Karim G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: We study the problem of optimizing the performance of cognitive radio users with opportunistic real-time applications subject to primary users quality-of-service (QoS) constraints. Two constrained optimization problems are formulated; the first problem is maximizing the secondary user throughput while the second problem is minimizing the secondary user average delay, subject to a common constraint on the primary user average delay. In spite of the complexity of the optimization problems, due to their non-convexity, we transform the first problem into a set of linear programs and the second problem into a set of quasiconvex optimization problems. We prove that both problems are equivalent with identical feasible sets and optimal solutions. We show, through numerical results, that the proposed cooperation policy represents the best compromise between enhancing the secondary users QoS and satisfying the primary users QoS requirements.
description: 7 pages, IEEE WCNC 2016
Detecting microvariability in type 2 quasars using enhanced F-test
Creators: name: Polednikova, J.
name: Ederoclite, A.
name: de Diego, J. A.
name: Cepa, J.
name: González-Serrano, J. I.
name: Bongiovanni, A.
name: Oteo, I.
name: García, A. M. Pérez
name: Pérez-Martínez, R.
name: Pintos-Castro, I.
name: Ramón-Pérez, M.
name: Sánchez-Portal, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Microvariability (intra-night variability) is a low amplitude flux change at short time scales (i.e. hours). It has been detected in unobscured type 1 AGNs and blazars. However in type 2 AGNs, the detection is hampered by the low contrast between the presumably variable nucleus and the host galaxy. In this paper, we present a search for microvariability in a sample of four type 2 quasars as an astrostatistical problem. We are exploring the use of a newly introduced enhanced F-test, proposed by de Diego 2014. The presented results show that out of our four observed targets, we were able to apply this statistical method to three of them. Evidence of microvariations is clear in the case of quasar J0802+2552 in all used filters (g',r' and i') during both observing nights, the microvariations are present in one of the nights of observations of J1258+5239 in one filter (i'), while for the J1316+4452, there is evidence for microvariability within our detection levels during one night and two filters (r' and i'). We demonstrate the feasibility of the enhanced F-test to detect microvariability in obscured type 2 quasars. At the end of this paper, we discuss possible causes of microvariability. One of the options is the misclassification of the targets. A likely scenario for explanation of the phenomenon involves optically thin gaps in a clumpy obscuring medium, in accordance with the present view of the circumnuclear region. There is a possible interesting connection between the merging state of the targets and detection of microvariability.
description: 11 pages, 8 figures, accepted to MNRAS
MPEC 2023-F16 : DAILY ORBIT UPDATE (2023 March 16)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: Μελέτη εγκατάστασης συστήματος επεξεργασίας θαλάσσιου έρματος σε πλοίο μεταφοράς χύδην φορτίου
title: Engineering study for the installation of a ballast water treatment system on a bulk carrier
titleType: AlternativeTitle
Creators: name: Μπρουζιώτης, Μάριος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Θαλάσσιο έρμα
Ναυτιλία
Ερματισμός
Αφερματισμός
Ηλεκτρόλυση
Θαλάσσιοι μικροοργανισμοί
Θαλάσσιο οικοσύστημα

description: Το έρμα είναι το θαλάσσιο νερό που εισέρχεται και εξέρχεται από το πλοίο με σκοπό να συμβάλλει στη σωστή ευστάθεια και πλεύση του. Περιέχει μικροοργανισμούς, οι οποίοι μεταφέρονται στα διάφορα θαλάσσια οικοσυστήματα, και μπορούν να αποτελέσουν απειλή για τη θαλάσσια ζωή αλλά και την ανθρώπινη υγεία. Στην παρούσα διπλωματική εργασία αρχικά γίνεται μια συνοπτική αναφορά στη διαδικασία ερματισμού/ αφερματισμού των πλοίων, και στη συνέχεια αναλύεται το πρόβλημα μεταφοράς μικροοργανισμών στα θαλάσσια οικοσυστήματα. Κατόπιν παρουσιάζεται το νομοθετικό πλαίσιο που αφορά τη Διεθνή Σύμβαση για τον Έλεγχο και τη Διαχείριση του Έρματος, και περιγράφονται οι επικρατέστερες μέθοδοι επεξεργασίας του θαλάσσιου έρματος, καθώς και τα κριτήρια επιλογής ενός συστήματος επεξεργασίας έρματος. Εν συνεχεία, πραγματοποιείται μελέτη εγκατάστασης συστήματος επεξεργασίας έρματος σε ένα πλοίο bulk carrier 19.124 DWT. Παρουσιάζονται η διαδικασία επιλογής του χώρου εγκατάστασης, οι οδεύσεις των σωληνώσεων και οι θέσεις των εξαρτημάτων του συστήματος, τα χαρακτηριστικά στοιχεία των εξαρτημάτων και τα αντίστοιχα κατασκευαστικά σχέδια με τη χρήση ειδικού σχεδιαστικού προγράμματος Η/Υ.
L’arte visiva come fonte paritetica alla scrittura
Creators: name: Vettese, Angela
Publisher: name: La Rivista di Engramma
Year: 2024
Subjects: Franco Rella
Idea of Self
Concept of Fragment
Asystematical philosophy
Durers Selfportrait
Van Gogh

description: Along with philosophical texts, Franco Rella uses literary and pictorial sources with no hierarchies or chronologies, fully embracing the visual texts as sources for reliable knowledge. Focusing on the analysis of the self, Rella also asks for a fragmented discourse and for an asystematical way of thinking, in opposition to the main western philosophical systems. The act of digging into the self also leads Rella, within his book Negli occhi di Vincent. L’io nello specchio del mondo (1998), to embrace a narrative experimental style, in which the main character is his own self.