Search results for "FRAM"

Autonomous on-board data processing and instrument calibration software for the SO/PHI

2018

The extension of on-board data processing capabilities is an attractive option to reduce telemetry for scientific instruments on deep space missions. The challenges that this presents, however, require a comprehensive software system, which operates on the limited resources a data processing unit in space allows. We implemented such a system for the Polarimetric and Helioseismic Imager (PHI) on-board the Solar Orbiter (SO) spacecraft. It ensures autonomous operation to handle long command-response times, easy changing of the processes after new lessons have been learned and meticulous book-keeping of all operations to ensure scientific accuracy. This contribution presents the requirements a…

A geometric approach for predicting vertical stationary profiles of weakly inertial advecting-diffusing particles in closed incompressible flows

2004

Abstract Mixing of weakly inertial particles in closed flows is often addressed by considering individual particles as passive advecting-diffusing tracers, subjected to an additional settling velocity resulting from body forces (e.g. gravity). We show that the qualitative and quantitative features of the vertical particle distribution (i.e. the horizontal cross-sectional averages of particle concentration) can be predicted from the structure of the flow resulting from the superposition of the stirring field and the settling velocity. The prediction is based upon the observation that the resulting flow can be divided into two nonoverlapping regions, namely trajectories that are confined with…

Ripensare i territori metropolitani. Forme e processi di pressione insediativa sui sistemi di interesse naturale

2013

Nei contesti metropolitani siciliani le recenti forme di urbanizzazione hanno raggiunto livelli di consumo di suolo libero e di pregio, e conseguentemente forme di frammentazione ambientale e territoriale, che rischiano di compromettere non soltanto il valore paesaggistico-ambientale dei territori interessati, ma la loro stessa identità. A partire da questo dato il contributo si pone il duplice obiettivo di verificare da un lato il nesso esistente fra forma dell’urbanizzato e impatto sul sistema ambientale; dall’altro di identificare possibili strategie di governo dei processi di trasformazione del territorio riferite ai reciproci rapporti spaziali tra ambiente costruito e territori aperti.

(S)legati (d)al lavoro. Adulti giovani e occupazione tra ricomposizione e frammentazione sociale

2005

Von (pragma-)semantischer Valenz zu Frames in der Beschreibung der Argumentstruktur (von Transferverben)

2019

International audience; An ausgewählten - auffälligen – Beispielen aus dem Bereich der Transferverben (Besitzwechselverben) geht der Beitrag der Frage nach den potentiellen Übergängen von valenz-basierten zu frame-semantischen Beschreibungsansätzen von Argumentstrukturen nach. Es werden dabei die folgenden drei Thesen zur Diskussion gestellt:(i)Die Wechselbeziehungen zwischen (pragma-semantischer) Valenz und Frame-Semantik können noch ausgebaut werden (Ziem/Lasch 2013: 110-142).(ii)Die semantische Dimension kann nur holistisch erfasst werden (Busse 1995, 2008, 2012).(iii)Eine Zurückführung auf abstraktere Konstruktionen ist immer möglich (oder gar wünschenswert!). In einem ersten Teil werde…

Exploiting EDCA for Feedback Channels in Hybrid VLC/WiFi Architectures

2021

In this paper, we consider integrating VLC and WiFi technologies in a scenario in which Light-Emitting-Diodes (LEDs), acting as network access points (APs) for ultra-dense Internet of Things applications, are deployed into an indoor lighting infrastructure. In such a scenario, RF-links can be exploited for complementing VLC-links in dealing with mobility and bidirectional communications, which can be problematic due to the limited coverage areas and self-generated interference of VLC APs. In particular, we consider the possibility of supporting a technology-based duplexing scheme, in which downlink and uplink transmissions are performed by means, respectively, of VLC and WiFi interfaces int…

Managed Multiculturalism in Finnish Media Initiatives

2007

This paper focuses on Finnish mainstream journalism featuring multiculturalism. Three different initiatives are analysed with a qualitative text method founded on discourse and frame analysis. Finnish mainstream journalism took a multicultural turn in the mid-990s, two decades later than in neighbouring Sweden where similar initiatives were launched in the 1970s. The paper takes a critical look at the power relations these initiatives assert or transgress, how multicultural discourses position various actors in society, and how the mainstream media encounter cultural and ethnic differences in a changing demographic situation with a positive intention.

Balancing the Frame of Threat: Uninvited Migrants in the Finnish News

2010

This chapter analyzes Finnish news journalism concerning asylum seekers and undocumented migration. It focuses on 'the variety of others', the media not only construct a division between 'us' and 'them,' but also create varieties of 'others.' The solution to the problems related to otherness is not, however, to recognize that we are all different, as the currently popular discourse that celebrates 'cultural diversity' often claims. This chapter scrutinizes the frames of 'threat' and 'victim' which are typical of the media’s coverage of asylum seekers and undocumented migrants. To identify the narrative, I have analyzed what is defined as problems and what is offered as the causes of and sol…

Address Event Representation (AER) approach to resistive sensor arrays

2020

Address event representation (AER) has become an excellent strategy when approaching traditional frame based applications, mainly vision sensors. In this paper, and Within this scope, the potential of the AER paradigm is demonstrated when considering resistive (non-vision) sensor arrays. For showing quantitative evidences, MOS AMS 0.35 μm versions of some of the circuit cells typically used in AER systems, such as Winner-Take-All (WTA) circuits, have been implemented and analyzed. In these unit-cells, basic resistance-controlled sources are considered as per sensing devices. Preliminary simulation results demonstrate that this approach is valid for a wide range of resistive sensors.

Frame-based and frameless endoscopic procedures in the third ventricle.

1997

Stereotactic guidance is useful for planning an accurate trajectory to the third ventricle. A guiding block with a ball joint was developed for frame-based endoscopy and adaptors for arm-based and armless navigation systems. Between 1992 and 1996, 52 patients were operated on endoscopically in the third ventricle under stereotactic guidance. Thirty-eight ventriculostomies, 13 biopsies and 10 cystic lesions were performed. The coordinates of two points were calculated; one in the foramen of Monro and the second in the third ventricle. The ventriculostomy was performed under endoscopic control bluntly with a Fogarty catheter in front of the basilar artery. Twenty-seven (71%) of the patients h…