Search results for " void"
showing 6 items of 26 documents
Simplified Hybrid PD Model in Voids
2011
In this paper a novel approach to model partial discharges (PD) activity taking place inside a spherical void in epoxy resin system has been traced. The approach is based on a time varying conductance of the inner void, subjected to multistress conditions: voltage, temperature and pressure. A simple lumped circuit macro-model simulates the global effects of PD activity: the different parameters influencing the discharge phenomenon in the void are taking into account by using a physical approach resulting in a time varying conductance inside the circuit. The evaluated PD activity has been compared with experimental and simulated one for the accessible and inaccessible part of the system. A d…
Simplified hybrid PD model in voids: Pattern validation
2013
The purpose of the present work is to show the validation of a new model to simulate the physical phenomenon of partial discharge (PD) produced in air voids inside insulating epoxy resin. The model has been developed on the basis of a new approach that combines the known circuit model of three capacitors with a model used to describe the behavior of the ionized channel inside of the inclusion during the discharge phenomenon, short-circuiting the capacity that represents the void. The approach is based on time-variable conductance of the void, subjected to multistress conditions: voltage, temperature and pressure. The new approach has been developed from a time variable conductivity model us…
Landscape Urbanism and Architecture of the Voids
2017
Il paper è focalizzato sull'importanza che la nozione di "vuoto" riveste nello sviluppo del Landscape Urbanism. Vengono prese in considerazione le teorie di Secchi e Koolhaas per quanto riguarda la possibilità di una nuova ricezione dll'idea di vuoto. Inoltre l'intervento Chassé Terrain a Breda ddegli OMa è analizzato in modo da mostrare come esso costituisce una tappa importante per i successivi progetti urbanistici. This paper is focused on the relevance of the idea of “void” for the development of landscape urbanism. The theories of Secchi and Koolhaas are considered as far as a new acceptance of void is concerned. Furthermore the highly influential Chassé Terrain intervention in Breda b…
Regreso al vacío: sobre ausencia y desaparición social (Back to the void. Concerning absence and social disappearance)
2019
La ausencia es un tópico común en los textos que toman a la desaparición forzada o al desaparecido como objeto de interés. No es extraño, pues se han conseguido a partir de ese concepto resultados poderosos. Sin embargo, como en casi todo lo que se naturaliza, el contenido del concepto y de sus declinaciones ha perdido fuelle y cuesta saber de qué se habla cuando se habla de ausencia. Dentro del esfuerzo por construir una definición rigurosa de “desaparición social”, este texto regresa sobre el concepto, observa sus usos más instalados y sobre todo busca vías para volver a llenarlo de contenido. En este texto …
Semantics of Voids within Data: Ignorance-Aware Machine Learning
2021
Operating with ignorance is an important concern of geographical information science when the objective is to discover knowledge from the imperfect spatial data. Data mining (driven by knowledge discovery tools) is about processing available (observed, known, and understood) samples of data aiming to build a model (e.g., a classifier) to handle data samples that are not yet observed, known, or understood. These tools traditionally take semantically labeled samples of the available data (known facts) as an input for learning. We want to challenge the indispensability of this approach, and we suggest considering the things the other way around. What if the task would be as follows: how to buil…