Metropolis Integration Schemes for Self-Adjoint Diffusions

We present explicit methods for simulating diffusions whose generator is self-adjoint with respect to a known (but possibly not normalizable) density. These methods exploit this property and combine an optimized Runge-Kutta algorithm with a Metropolis-Hastings Monte-Carlo scheme. The resulting numerical integration scheme is shown to be weakly accurate at finite noise and to gain higher order accuracy in the small noise limit. It also permits to avoid computing explicitly certain terms in the equation, such as the divergence of the mobility tensor, which can be tedious to calculate. Finally, the scheme is shown to be ergodic with respect to the exact equilibrium probability distribution of the diffusion when it exists. These results are illustrated on several examples including a Brownian dynamics simulation of DNA in a solvent. In this example, the proposed scheme is able to accurately compute dynamics at time step sizes that are an order of magnitude (or more) larger than those permitted with commonly used explicit predictor-corrector schemes.Comment: 54 pages, 8 figures, To appear in MM

Over lobectomie en pneumonectomie wegens longtuberculose

In de inleiding wordt het doel van deze studie geformuleerd als een poging tot bundeling van de snel groeiende ervaring van de behandeling der longtuberculose door middel van pneumonectomie, lobectomie of segmentale resectie. In het eerste hoofstuk worden eerst enkele principes besproken van de tuberculosebehandeling in het algemeen en van de longtuberculose in het bijzonder. Zie: Sameenvattin

Field Emission for resonance sensing in MEMS/NEMS

In the past decades, there is a considerable interest in the sensor community to move from micron to nano-devices, typically scaling of resonators such as cantilever beams

Nonnormative Ethics: The dynamic of trans formation

In this thesis I propose to address trans as nonnormative ethical formation. In the current definition (Stryker, 2008) trans is defined as a movement outside of constraints that encapsulate normative genders. Preciado (2012) argues that trans involves the constitution of a soma-political project, beyond identity. As opposed to theories that describe identity formation as aspirational, the thesis extends Aristotle’s arguments for ethical formation in terms of interactive engagement within environments through an agents’ dunamis – the powers of its Soul (Lee 1992). The limits of the Aristotelian model will be overcome by use of Anzaldúa (1987) and Lugones (2003). The navigation away from imposed normative environments through agential action will be shown to lead to nonnormative logos: a formational logic shaping perception, action, and practical reflection culminating in practical truth. This reading enables centering somatechnical processes (Sullivan 2009) as generative of forms of life. Wittgenstein suggests that agential logic informs forms of life, shaping validity of both principles and decisions. I use this insight to claim that the polis is ordered by a single logic that informs norms. I propose nonnormative ethics to encompass agents with differing logos. Reading eudaimonia as the demon standing behind the agent, I will suggest that nonnormative ethics takes place outside of the polis on the ‘demonic grounds’ (McKittrick 2015, Wynter 1990). Nonnormative ethical connections are multilogical and are bridged by collective codes. I will draw from Glissant (2002) to make a case for acknowledging agential opacity away from a pathologising claim to interiority. I will argue for nonantagonistic playfulness and loss (Lugones, 2003) as keys to the emergence of nonnormative codes enabling shared forms of life. I propose that the distinction with the codes of the polis is the willingness to share loss, instead of exploitation. The thesis makes the case that bodily change is central to changing one’s understanding of, and relation to one’s surroundings. Furthermore, I argue such change is a collective process, and that emerging epistemologies are connected to contextual ethics

Diffusion of silver during sintering in high permittivity COG dielectrics

To achieve cost reduction in multi-layer ceramic capacitors and actuators, which use a silver-palladium alloy as internal electrode, the trend is to use alloys with the highest silver content possible. This requires ceramic materials which must be sintered at a relative low temperature. Goal is to avoid much diffusion of silver into the ceramics. Analysis of the composition of the electrode in multilayer components is a good tool to investigate the diffusion of silver during sintering. Analysis of various multi-layer components with different silver-palladium alloys shows that the diffusion of silver during sintering is dependent on the difference between the sintering temperature of the multilayer component and the melting point of the silver-palladium alloy used. Diffusion of silver into the ceramics during sintering is negligible when this difference is at least 100° C

Про єдиний взірець давньої української шкільної епічної епіцедії

У статті розглядається єдиний у збережених давніх українських поетиках взірець епічної епіцедії. Твір, присвячений єпископу Чернігівському і Новгород-Сіверському Амвросію Дубневичу, міститься у чернігівській поетиці 1749-1750 рр.. Уперше публікується переклад українською мовою.В статье рассматривается единственный из сохраненных в старых украинских поэтиках образец эпической эпицедии. Сочинение, посвященное епископу Черниговскому и Новгород-Сиверскому Амвросию Дубневичу, содержится в черниговской поэтике 1749-1750 годов. Впервые печатается перевод на украинский язык.The article deals with the sample of epic epicedium as a single one saved in old Ukrainian poetics. Included into in the Chernihiv poetic of 1749 – 1750 year, the work is dedicated to Bishop of Chernihiv and Novgorod – Siverskyi Ambrosius Dubnyevych. The translation into Ukrainian is published for the first time