62 research outputs found
Fictionality and Literature: Core Concepts Revisited
No full textAuthor / Henrik Zetterberg-Nielsen -- Narrator / Sylvie Patron -- Plot / Wendy Veronica Xin -- Character / H. Porter Abbott -- Consciousness / Maria Mäkelä -- Metaphor / Greta Olson -- Paratext / Louise Brix Jacobsen -- Intertextuality / Rikke Andersen Kraglund -- Metafiction and metalepsis / Richard Walsh -- The novel / Catherine Gallagher and Simona Zetterberg-Nielsen -- Poetry / Lasse R. Gammelgaard -- Literary nonfiction / James Phelan -- Ethics / Jakob Lothe -- Social justice / Susan S. Lanser.Item embargoed for five year
2D Material Device Architectures: Process Optimisation and Characterisation
No full textA wide range of two-dimensional layered materials have been isolated and synthetically grown since the discovery of graphene. These layered materials can be thinned down to monolayer from their bulk crystals and re-stacked into arbitrary van der Waals heterostructures with atomic layer precision. The possible combinations of layers are nearly infinite, which leads to an extensive demand for robust and universal fabrication techniques and device architectures, that can enable the full potential of the extensive library of two-dimensional materials. Recent experimental development has made it possible to stack two-dimensional crystals with atomically clean interphases, through a procedure termed van der Waals assembly. We have further developed this assembly method with the \Hot pick-up" method, which enables batch assembly as well as assembly with pre-patterned crystals. Inclusion of pre-patterned crystals increases the exibility of device architectures significantly.In this work, devices and experiments have been performed with graphene, semi-conducting transition metal dichalcogenides and hexagonal boron nitride. Two robust and reliable approaches have been used. Firstly, stencil lithography has been applied in particular for process optimisation and fault-finding. Stencil lithography has the advantage of being fast, cheap and clean, and has in this thesis been applied for fabrication of graphene and transition metal dichalcogenides devices. Secondly, van der Waals heterostructures have been fabricated with both graphene and transition metal dichalcogenides layers encapsulated in hexagonal boron nitride. Electrical contacts to encapsulated graphene have been developed to accommodate the requirement of field-effect gating by top- and back gates. Devices of mono-, bi- and trilayer graphene encapsulated in hexagonal boron nitride have been fabricated and studied electrically. These devices have field-effect mobilities comparable with the highest values reported. Furthermore, state of the art nano-patterns have been fabricated into encapsulated graphene. It was also explore how graphene layers perform as tunable contacts to transition metal dichalcogenides layers encapsulated in hexagonal boron nitride. This architecture yields high performance devices, where high mobilities of the air sensitive MoTe2 crystals have measured, and metal-insulator transition have been observed in monolayer MoS2 devices. Additionally, the long-term stability of transition metal dichalcogenides has been studied, and the order of the layers has been demonstrated detectable by atomic force microscopy. The encapsulated van der Waals heterostructures give high performance and long-term stability of two-dimensional layered materials. The integration of pre-patterned layers, postpatterning of van der Waals heterostructures and detection of the layer order enables control { not only of the vertical ordering of atomic layers { but also in the lateral dimension, facilitating fabrication of advanced metamaterials and nano-devices with better or completely new functionalities
High-quality graphene flakes exfoliated on a flat hydrophobic polymer
No full textWe show that graphene supported on a hydrophobic and flat polymer surface results in flakes with extremely low doping and strain as assessed by their Raman spectroscopic characteristics. We exemplify this technique by micromechanical exfoliation of graphene on flat poly(methylmethacrylate) layers and demonstrate Raman peak intensity ratios I(2D)/I(G) approaching 10, similar to pristine freestanding graphene. We verify that these features are not an artifact of optical interference effects occurring at the substrate: they are similarly observed when varying the substrate thickness and are maintained when the environment of the graphene flake is completely changed, by encapsulating preselected flakes between hexagonal boron nitride layers. The exfoliation of clean, pristine graphene layers directly on flat polymer substrates enables high performance, supported, and non-encapsulated graphene devices for flexible and transparent optoelectronic studies. We additionally show that the access to a clean and supported graphene source leads to high-quality van der Waals heterostructures and devices with reproducible carrier mobilities exceeding 50 000 cm2 V−1 s−1 at room temperature
Orbifold Quot schemes via the Le Bruyn-Procesi theorem
No full textThis note provides a short proof of the fact that the reduced scheme underlying each orbifold Quot scheme associated to a finite subgroup of SL(2,C) is isomorphic to a Nakajima quiver variety. Our approach uses recent work of the author with Yamagishi, allowing us to bypass the combinatorial arguments and the use of recollement from the original paper with Gammelgaard, Gyenge and Szendroi.5 pages. This is an expanded version of a short article submitted to Proceedings of the ZAG semina
Kompetencebehov i fremtidens blå Danmark 2013
No full textFor at styrke kompetenceniveauet i de maritime erhverv i Danmark er 10 partnere, bestående
af relevante uddannelsesinstitutioner og maritime interesseorganisationer, gået sammen om
projektet ’Danmarks Maritime Klynge’ (DKMK). Med et særligt fokus på kompetenceudvikling
inden for den maritime sektor udvikles og oprettes der i projektet flere maritime uddannelsesforløb
i form af fag og kurser på bachelor- og kandidatniveau, der arbejdes på at skabe nemmere
afkørsler til kandidatuddannelser for professionsbachelorer, og der udarbejdes relevante
maritime efteruddannelsestilbud.
Som en indledende del af projektet har projektets partnere via en række analyseaktiviteter
set nærmere på, hvilke udfordringer, muligheder og behov de maritime erhverv i Danmark
står over for i relation til uddannelse, kompetence og arbejdskraft. Ligeledes er der i inspirationsøjemed
blevet set på, hvordan andre førende maritime nationer har valgt at støtte op om
udviklingen af deres maritime klynger. Analyserne er foretaget på et overordnet niveau og
mere uddannelsesspecifikke analyser vil blive foretaget af de enkelte partnere i den resterende
projektperiode
Developing a Supply Chain Risk Model
No full textA number of trends like globalisation, outsourcing, single sourcing, and leanness have together created a more vulnerable supply chain. This increased vulnerability has made supply chain risk issues a hot topic in academia as well as in industry. There has, however, been a lack of suitable models. The objective of this paper is to develop one such model – a conceptual model with the help of which risks, seen from the perspective of a single focal company in the chain, related to disturbances and interruptions in the physical flow in the supply chain, could be structured and described on a general level. Only economic risks are considered. The paper is based on a literature review and some case studies. The literature review was focused on articles and reports/books on supply chain risk management and related areas. There are one main case study (Beta) and two smaller ones (Alfa and Gamma). The author has spent five weeks on the floor in two of the factories of Beta. One basic assumption in the model is that the supply chain can be divided into three "parts" named: Demand side, Production and Supply side. Another assumption is that there exists a need to analyse the supply chain flow-related risks both from the perspective of the single company in the chain and from the perspective of the supply chain of which it is a part. Three existing cases illustrate the use of the model. Finally, weaknesses of the model are discussed and some possible directions for further elaboration are presented
Valuation of Supply Chain Flow Risks by Indexing
No full textThe paper is based on a general conceptual supply chain flow risk model developed in an earlier paper, a literature review and case studies. The paper has the title "Developing a supply chain risk model" and is reported as a final paper at the NOFOMA 2005 conference. The literature review has been focusing articles and reports/books on supply chain management. Some of its findings have earlier been reported in a book chapter in Brindley (2004). There is one main case-study, presented here as case Beta and two minor cases (Alfa and Gamma). The author spent five weeks during the autumn of 2004 on the floor in two of the factories of Beta. That resulted in three internal reports to Beta and a lot of experience and ideas about supply chain flow related risks including the valuation of risks through indexing. Earlier drafts of this paper have on some occasions been tested on risk managers of Beta and developed further based on their feedback. The three cases illustrate the use of the valuation model. Finally is concluded that using indexes can be a way of quickly and with limited resources getting a broad grip of the total risks in the supply chain – not least in new risk situations. The alternative is often not to have any figure at all for the supply chain risks. But we have to be careful because indexes create a new risk – the risk that we believe too much in them
Improvement on simultaneous determination of chromium species in aqueous solution by ion chromatography and chemiluminescence detection
No full textA sensitive method for the simultaneous determination of chromium(III) and chromium(VI) was chromatography and chemiluminescence detection. Two Dionex ion-exchange guard columns in series, CG5 and AG7, were used to separate chromium(III) from chromium(VI). Chromium(VI) was reduced by potassium sulphite, whereupon both species were detected by use of the luminol-hydrogen peroxide chemiluminescence system. Parameters affecting retention times and resolution of the separator columns, such as eluent pH, eluent composition, reductant pH and concentration, and flow rates were optimized. Furthermore, the stabilities of reductant and luminol solutions were studied. The linear range of the calibration curve for chromium(III) and chromium(VI) was 1-400 mu g l(-1). The detection limit was 0.12 mu g l(-1) for chromium(III) and 0.09 mu g l(-1) for chromium(VI), respectively. The precision at the 20 mu g l(-1) level was 1.4% for chromium(III) and 2.5% for chromium(VI), respectively. The accuracy of the chromium(III) determination was determined by analysis of the NIST standard reference material 1643c, Trace elements in water with the result 19.1 +/- 1.0 mu g Cr(III) l(-1) (certified value 19.0 +/- 0.6 mu g Cr(III) l(-1)). The method was applied to analyse the stability of chromium patches for contact dermatitis testing. (C) 1997 Elsevier Science B.V.Chemistry, AnalyticalSCI(E)45ARTICLE1-3107-11335
Den kvindelige tanke
No full textMed udgangspunkt i Simone de Beauvoirs klassiske værk om kvinders situation "Det andet køn" påpeger forfatteren nogle filosofiske grundantagelser, som ikke er forskellige fra dem man finder i traditionel antifeministisk filosofi. Som repræsentanter for sidstnævnte redegøres for Otto Weiningers og Georg Simmels opfattelse af kvinden. Forfatteren påpeger de begrænsninger for en radikal feministisk frigørelsesstrategi, der ligger i denne dualistiske opfattelse af primært rationel og intuitiv viden, og hun bruger psykoanalysen som eksempel på en erkendeform, der kan bidrage til en nuancering af ovennævnte dualistiske tænkning.Taking Simone de Beauvoir's classic work of women's situation, "The Other Sex", as her starting point the author emphasizes some basic philosophic assumptions, which do not differ from those of the traditional antifeminist philosophy. As representatives of the latter, Otto Weininger's and George Simmel's conceptions of women are reviewed. The author points out the limitations of a radical feminist emancipation strategy emerging from this dualistic concept of primarily rational and intuitive knowledge, and she takespsychoanalysis as an example of a cognition contributing to a differentiation of the above mentioned dualistic concept
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