Buscador de Tesis y publicaciones académicas

Spectral imaging at BM-18 with single shot acquisition using prisms

Simon ZABLER · Matthias DIEZ · Jajnabalkya GUHATHAKURTA · Daniel RAUCH · y 5 más

The overall objective is to develop a new method for 2D and 3D spectral computed tomography on synchrotron beamlines. Spectral or energy-resolved transmission imaging on beamlines is realized for example by collimating pencil synchrotron micro-beams. Generally, the energy resolution stems from crystal- or multi-layer m...

NORWAY BAG

Gabriele CORDARA · Yomkippur PEREZ · Petra PERNOT · Szymon SZOSTAK · y 3 más

The fourteen PIs associated to this proposal represent the entire crystallography community in Norway and are affiliated to the major Norwegian universities. The research interests of the PIs and their collaborators revolves around topics linked to structural biology and material sciences. We apply for beam time for si...

Strain tensor tomography with X-ray powder diffraction

James BALL · Peter MODREGGER · Ahmar KHALIQ · Felix WITTWER

Material properties of poly-crystalline engineering materials such as fatigue strength or corrosion resistance are linked to local strain and residual stress distributions. Accordingly, accurate strain measurements on micrometer scales provide the basis for reliable life time and failure predictions. Up to now, there a...

Nakano-Griffiths inequality, holomorphic Morse inequalities, and extension theorems for q-concave domains

Bingxiao Liu · George Marinescu · Huan Wang

We establish a general Nakano-Griffiths inequality with boundary conditions and apply it to derive holomorphic Morse inequalities for domains satisfying analytic convexity assumptions. The proof of these inequalities relies on analyzing the spectral spaces of the Laplace operator with $\overline{\partial }$-Neumann bou...

Engineering functional vasculatures to reconstruct sympathetic-parasympathetic circuits for bladder function after spinal cord injury

Haiyan Weng · Longyou Xiao · Ting Li · Hengrui Chang · y 12 más

Spinal cord injury (SCI) leads to severe neurogenic bladder dysfunction, and its recovery highly depends on the restoration of bladder innervation of sympathetic-parasympathetic nerves. Stable blood perfusion is a prerequisite for sustaining neural regeneration, yet functional microvasculature rarely forms within injur...

Enforcing TSP-optimality in fair vehicle routing by cutting planes

Bart van Rossum · Rui Chen · Andrea Lodi

We study the fair capacitated vehicle routing problem, in which a fleet of vehicles must serve a set of customers such that the difference between the longest and shortest route, the range, is minimized. A key challenge is that the range objective is non-monotonic: it can be reduced by artificially lengthening routes,...

Causation-guided mechanism identification and interpretable reduced-order modeling of damage-driving grain-boundary stress in creep

Weichen Kong · Yanwei Dai · Yinling Zhang · Yinghua Liu

GB local stress is central to the initiation and evolution of long-term creep damage in polycrystalline superalloys. Owing to the high-dimensional nonlinear relationships between the GB stress response and multiple crystallographic, microstructural, and micromechanical characteristics, it remains challenging to identif...

Small angle X-ray scattering (SAXS) overlay measurements for advanced semiconductor technologies.

NIschal DHUNGANA · Matteo KNEBEL · Timothée CHOISNET · Tristan DEWOLF · y 7 más

In the aim of enhancing the density of components in microchips and thus improve their performances, microelectronics components keep downsizing. The International Roadmap for Devices and Systems (IRDS), announced the need of sub-nanometer metrological sensitivity below the 10 nm node, usually accounting for the grid w...

Executive Education in China: The Case of a Sino-British Business School

van der Schaft, Lambert Cornelis Ewout

A Nitsche-based mixed finite element method for Poisson problem with mixed and Signorini boundary conditions

Verónica Anaya · Rodolfo Araya · Yuliza Capuñay · Franz Chouly

In this work, we present two Nitsche-based mixed finite element methods. The first one concerns the scalar Poisson problem on a domain whose boundary is partitioned into Dirichlet and Neumann (linear) conditions. For this problem, we introduce a new discrete variational formulation that enables the weak imposition of m...