La danse de salon ou danse sociale: un outil du travailleur social pour favoriser l’insertion sociale de la personne marginalisée sur l’espace public et/ou en institution

Ce travail de Bachelor a pour thématique la danse de salon en lien avec la marginalité. Le travailleur social en lien avec la population marginalisée peut-il inclure la danse de salon comme outil éducatif ? Cette recherche vise aussi à découvrir si la danse de salon peut favoriser la socialisation des personnes marginalisées. Ayant pratiqué les bases de la danse de salon, j’ai observé un potentiel important de bénéfices que cela peut apporter à l’individu. Est-ce adapté et/ou adaptable à la population marginalisée

In-situ strain tuning in hBN-encapsulated graphene electronic devices

Using a simple setup to bend a flexible substrate, we demonstrate deterministic and reproducible in-situ strain tuning of graphene electronic devices. Central to this method is the full hBN encapsulation of graphene, which preserves the exceptional quality of pristine graphene for transport experiments. In addition, the on-substrate approach allows one to exploit strain effects in the full range of possible sample geometries and at the same time guarantees that changes in the gate capacitance remain negligible during the deformation process. We use Raman spectroscopy to spatially map the strain magnitude in devices with two different geometries and demonstrate the possibility to engineer a strain gradient, which is relevant for accessing the valley degree of freedom with pseudo-magnetic fields. Comparing the transport characteristics of a suspended device with those of an on-substrate device, we demonstrate that our new approach does not suffer from the ambiguities encountered in suspended devices

Politik und Finanz

In dieser Arbeit werden Methoden zur Verhinderung von Endogenität anhand von ausgewählten, wissenschaftlichen Artikeln aus dem Bereich Politik und Banken untersucht. Im zweiten Kapitel werden Grundlagen sowie Eigenschaften von OLS-Schätzern definiert. Außerdem werden Kriterien für unverzerrte und konsistente Schätzer definiert. Das dritte Kapitel erklärt wie Endogenität entsteht, was die Auswirkungen sind und mit welchen Methoden sie verhindert werden kann - drei Methoden werden dabei näher vorgestellt. In Kapitel vier wird wissenschaftliche Literatur im Bereich Politik und Banken (i) inhaltlich analysiert und (ii) auf die Verwendung der, in Kapitel drei vorgestellten Methoden zur Verhinderung von Endogenität hin, untersucht. Vier von acht Studien benützen ein natürliches Experiment (Halling et al. [2010] und Cole [2009]) oder eine Instrumentvariable (Cole [2007] und Dinc [2005]). In allen Studien setzen die Autoren feste Effekte ein. Inhaltlich werden zwei Arbeiten (Halling et al. [2010] und Cole [2007]) näher analysiert. In beiden Artikeln finden die Autoren in den Daten Hinweise, die darauf hindeuten, dass regierende Politiker staatliche Banken ausnu ̈tzen, um die Wahrscheinlichkeit ihrer Wiederwahl zu erhöhen

The Calibration Home Base for Imaging Spectrometers

The Calibration Home Base (CHB) is an optical laboratory designed for the calibration of imaging spectrometers for the VNIR/SWIR wavelength range. Radiometric, spectral and geometric calibration as well as the characterization of sensor signal dependency on polarization are realized in a precise and highly automated fashion. This allows to carry out a wide range of time consuming measurements in an ecient way. The implementation of ISO 9001 standards in all procedures ensures a traceable quality of results. Spectral measurements in the wavelength range 380–1000 nm are performed to a wavelength uncertainty of +- 0.1 nm, while an uncertainty of +-0.2 nm is reached in the wavelength range 1000 – 2500 nm. Geometric measurements are performed at increments of 1.7 µrad across track and 7.6 µrad along track. Radiometric measurements reach an absolute uncertainty of +-3% (k=1). Sensor artifacts, such as caused by stray light will be characterizable and correctable in the near future. For now, the CHB is suitable for the characterization of pushbroom sensors, spectrometers and cameras. However, it is planned to extend the CHBs capabilities in the near future such that snapshot hyperspectral imagers can be characterized as well. The calibration services of the CHB are open to third party customers from research institutes as well as industry

Banking on Snow: Bank Capital, Risk, and Employment

How does small-firm employment respond to exogenous labor productivity risk? We find that this depends on the capitalization of firms' local banks. The evidence comes from firms offering (quasi-) fixed employment to workers whose productivity depends on the weather. Weather risk reduces this employment, and the effect is stronger in regions where the regional banks have less equity capital. Bank capitalization also proxies for the extent to which the regional banks’ borrowers can obtain liquidity when the regions are hit by weather shocks. We argue that, as liquidity providers, well-capitalized banks support economic adaptation to climate change

Kinetics of 5-aminolevulinic acid-induced fluorescence in organ cultures of bronchial epithelium and tumor

Background: 5-Aminolevulinic acid (5-ALA)-induced protoporphyrin IX (PPIX) fluorescence improves the differentiation of tumor and normal tissue in the bladder, skin and brain. Objective: The kinetics of 5-ALA-induced protoporphyrin IX (PPIX) fluorescence in organ cultures of normal human bronchial epithelium and cocultures of bronchial epithelium and tumor have been studied. Methods: Cultured biopsies of bronchial epithelium were exposed for 5 or 15 min, or continuously to 5-ALA. PPIX fluorescence was quantified for up to 300 min by spectroscopy. Cocultures of normal bronchial epithelium and a non-small-cell lung cancer cell line (EPLC-32M1) were incubated with 5-ALA. Space-resolved fluorescence microscopy was used to quantify PPIX fluorescence kinetics in the tumor and normal epithelium. Results: In cultures of normal epithelium, PPIX fluorescence kinetics were shown to depend on the duration of exposure to 5-ALA. There was a trend to higher fluorescence intensities with longer exposure times. In cocultures of bronchial epithelium and tumor, increases of fluorescence intensity were significantly greater in the tumor. Best tumor/normal tissue fluorescence ratios were found between 110 and 160 min after exposure to 5-ALA. Conclusion: Data obtained in this coculture system of bronchial epithelium and tumor is valuable to optimize modalities of fluorescence bronchoscopy for the diagnosis of early bronchial carcinoma. Copyright (C) 2002 S. Karger AG, Basel

Tissue engineering on matrix: future of autologous tissue replacement

Tissue engineering aims at the creation of living neo-tissues identical or close to their native human counterparts. As basis of this approach, temporary biodegradable supporter matrices are fabricated in the shape of a desired construct, which promote tissue strength and provide functionality until sufficient neo-tissue is formed. Besides fully synthetic polymer-based scaffolds, decellularized biological tissue of xenogenic or homogenic origin can be used. In a second step, these scaffolds are seeded with autologous cells attaching to the scaffold microstructure. In order to promote neo-tissue formation and maturation, the seeded scaffolds are exposed to different forms of stimulation. In cardiovascular tissue engineering, this "conditioning” can be achieved via culture media and biomimetic in vitro exposure, e.g., using flow bioreactors. This aims at adequate cellular differentiation, proliferation, and extracellular matrix production to form a living tissue called the construct. These living autologous constructs, such as heart valves or vascular grafts, are created in vitro, comprising a viable interstitium with repair and remodeling capabilities already prior to implantation. In situ further in vivo remodeling is intended to recapitulate physiological vascular architecture and function. The remodeling mechanisms were shown to be dominated by monocytic infiltration and chemotactic host-cell attraction leading into a multifaceted inflammatory process and neo-tissue formation. Key molecules of these processes can be integrated into the scaffold matrix to direct cell and tissue fate in viv