Search results for "SPACE"

On-Orbit Degradation of Solar Instruments

2013

International audience; We present the lessons learned about the degradation observed in several space solar missions, based on contributions at the Workshop about On-Orbit Degradation of Solar and Space Weather Instruments that took place at the Solar Terrestrial Centre of Excellence (Royal Observatory of Belgium) in Brussels on 3 May 2012. The aim of this workshop was to open discussions related to the degradation observed in Sun-observing instruments exposed to the effects of the space environment. This article summarizes the various lessons learned and offers recommendations to reduce or correct expected degradation with the goal of increasing the useful lifespan of future and ongoing s…

Siirtymäresurssit varhaiskasvatuksen siirtymätilan suhteissa ja muutoksissa

2023

Artikkeli tarkastelee yhden lapsen siirtymäresursseja varhaiskasvatuspolun erilaisissa siirtymissä. Etnografinen, pitkittäisasetelmaan perustuva tutkimusaineisto muodostuu yhden lapsen varhaiskasvatuspolun ensimmäisistä päivistä aina esiopetuksen alkuun. Artikkeli vastaa kysymykseen siitä, millaisia resursseja lapsi hyödyntää siirtymätilassa sekä millaisia muutoksia resurssien hyödyntämisessä tapahtuu siirtymien aikana? Siirtymiä tarkastellaan siirtymätiloina, jotka rakentuvat sekä tilanteisesti että relationaalisesti, eli suhteessa ympäristöön ja muihin toimijoihin. Lisäksi artikkelissa käytetään siirtymäresurssin käsitettä, joka viittaa tilannekohtaisiin tietoihin, taitoihin ja materiaali…

Numerical methods for a nonlinear impact model: A comparative study with closed-form corrections

2011

A physically based impact model-already known and exploited in the field of sound synthesis-is studied using both analytical tools and numerical simulations. It is shown that the Hamiltonian of a physical system composed of a mass impacting on a wall can be expressed analytically as a function of the mass velocity during contact. Moreover, an efficient and accurate approximation for the mass outbound velocity is presented, which allows to estimate the Hamiltonian at the end of the contact. Analytical results are then compared to numerical simulations obtained by discretizing the system with several numerical methods. It is shown that, for some regions of the parameter space, the trajectorie…

Deleuze's Sonic Territories and Husserl's Meaningful Worlds : Phenomenological. Approach to Music

2017

Casting Robotic end-effectors to reach far objects in space and planetary missions

2006

In this paper we present work aimed at developing a compact robotic device able to reach objects at far distance.The work is based on the idea of casting manipulation, and that allows to deploy an end-effector at large distances from the robot’s base by throwing (casting) it and controlling its ballistic flightusing forces transmitted through a light tether connected to the end-effector itself.

The Industrial Applicability of PEA Space Charge Measurements, for Performance Optimization of HVDC Power Cables

2019

Cable manufacturing industries are constantly trying to improve the electrical performance of power cables. During the years, it was found that one of the most relevant degradation factors influencing the cable lifetime is the presence of space charge in the insulation layer. To detect the accumulated charge, the pulsed electro-acoustic (PEA) method is the most used technique. Despite the wide use of the PEA cell, several issues are still present. In particular, the PEA output signal is strongly disturbed by the acoustic waves reflections within the PEA cell. This causes the distortion of the output signal and therefore the misinterpretation of the charge profiles. This, in turn, may result…

Ultra Reliable Communication in 5G Networks: A Dependability-based Availability Analysis in the Space Domain

2017

Master's thesis Information- and communication technology IKT591 - University of Agder 2017 As our daily life is becoming more dependent on wireless and mobile services, seamless network connectivity is of utmost importance. Wireless networks are expected to handle the growing demand for applications which require higher capacity, without failure. Therein, wireless connectivity is regarded as an essential requirement for a wide range of applications in order to support exible and cost-e ective services. As part of the fth generation (5G) communication paradigm, ultra reliable communication (URC) is envisaged as an important technology pillar for providing anywhere and anytime services to en…

Lo spazio della chiesa tra soglie e declinazioni del vuoto

2015

Gli assunti liturgici derivanti dal Concilio Vaticano II pongono una particolare attenzione sulla spazialità interna dell’edificio cultuale, strettamente relazionata al modo di essere della comunità di fedeli che al suo interno si raduna e da esso è rappresentata. Il progetto di uno spazio liturgico manifesta con chiara evidenza il processo conflittuale che è proprio dell’architettura, un processo che esalta vicendevolmente i termini in gioco motivandone l’intima essenza e dove il rapporto tra la corporeità (con i suoi diversi livelli fisici e simbolici) e la spiritualità dovrebbe definirsi come un riferimento costante rispetto a cui azione, condivisione e partecipazione convergano nella co…

Multimode Representation of the Magnetic Field for the Analysis of the Nonlinear Behavior of Solar Activity as a Driver of Space Weather

2022

ISSP UL as the Center of Excellence is supported through the Framework Program for European universities Union Horizon 2020, H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under Grant Agreement No. 739508, CAMART2 project; Internal Foundation of University of Maryland.

Governance della crisi e importanza del territorio per lo sviluppo regionale

2012

The aim of this paper is a reflection on the role of space in the processes of economic change. Starting in the United States the financial and economic crisis infected Europe after 2007. A wider debate on the current differential role of governments in the U.S. and Europe in addressing the crisis has emerged. The bailout programs in the U.S. have made reference to a unitary and homogeneous reference frame in the presence of a central bank whose broad mandate includes development goals. Europe, instead, has shown a different scenario and the same financial integration project depends on the complex relationship between individuals and the community, national sovereignty and increasingly bin…