Search results for "TF"

Smart Monitoring for Semantic Wireless (SCADA/DCS) Systems with Semantic SNMP Protocol.

2015

International audience; n this paper we propose a new implementation of SNMP protocol through (WS) and SOAP protocol, for wireless semantic (SCADA/DCS) systems and (IT-SCADA) platform monitoring. (WS) and SOAP may run on top of secure transport services implemented through protocols like HTTPS combined with industrial protocols as (DNP3, SOAP, ISM BAND, and ZIGBEE).We chose ZIGBBE wireless protocol for implementing our semantic security (IT-SCADA) management platform with semantic SNMP protocol via WS. To detect and infiltrate wireless radio network and semantic attacks, the use of (WS) gateways is needed to include SNMP devices into (WS) based management architecture. The evaluation shows …

Wilhelm Studemund e il «martire illustre della paleografia»

2012

On the basis of unpublished manuscript materials – especially a letter from 22nd April, 1866 – this paper reconstructs some unknown aspects of the background and of the evaluation of Wilhelm Studemund’s apograph of the Institutes of Gaius published in 1874 and its Supplementa published in 1884. Particular attention is paid to the use of chemical substances for the decipherment of the Gaius’ palimpsest.

How Cross-Platform Technology Can Facilitate Easier Creation of Business Apps

2017

Applications for mobile devices – apps – have seen unprecedented growth in importance. Ever better apps keep propelling the proliferation of mobile computing. App development is rather easy, particularly if it is based on Web technology. However, implementing apps that are user friendly and useful in the long-run is cumbersome. Thereby, it typically is expensive for corporate developers. Nonetheless, business apps are embraced by enterprises. To overcome the overhead of developing separately for multiple platforms and to mitigate the problems of device fragmentation, cross-platform development approaches are employed. While many such approaches exist, few have found widespread usage. In thi…

Comprehensive Analysis of Innovative Cross-Platform App Development Frameworks

2017

Progressive Web Apps: the Definite Approach to Cross-Platform Development?

2018

3D simulations of wind-jet interaction in massive X-ray binaries

2010

High-mass microquasars may produce jets that will strongly interact with surrounding stellar winds on binary system spatial scales. We study the dynamics of the collision between a mildly relativistic hydrodynamical jet of supersonic nature and the wind of an OB star. We performed numerical 3D simulations of jets that cross the stellar wind with the code Ratpenat. The jet head generates a strong shock in the wind, and strong recollimation shocks occur due to the initial overpressure of the jet with its environment. These shocks can accelerate particles up to TeV energies and produce gamma-rays. The recollimation shock also strengthens jet asymmetric Kelvin-Helmholtz instabilities produced i…

Tracking the evolution of the accretion flow in MAXI J1820+070 during its hard state with the JED-SAD model

2021

X-ray binaries in outburst typically show two canonical X-ray spectral states, i.e. hard and soft states, in which the physical properties of the accretion flow and of the jet are known to change. Recently, the JED-SAD paradigm has been proposed for black hole X-ray binaries, aimed to address the accretion-ejection interplay in these systems. According to this model, the accretion flow is composed by an outer standard Shakura-Sunyaev disk (SAD) and an inner hot Jet Emitting Disk (JED). The JED produces both the hard X-ray emission, effectively playing the role of the hot corona, and the radio jets. In this paper, we use the JED-SAD model to describe the evolution of the accretion flow in th…

The social perspective of the main MOOC platforms through Facebook

2017

Facebook, como red social, ofrece un medio potente de comunicación social a través de la Red, conectando usuarios con intereses comunes. En este estudio se analizan las cuentas de Facebook de 7 de las principales plataformas de MOOC: Coursera, EdX, Future Learn, Harvard Extension, Miríada X, Stanford Online y Udacity, con el fin de describir el modo en que estas emplean sus cuentas de Facebook como espacio digital de comunicación, información e interacción social con sus usuarios. Para ello, se han utilizado herramientas de medición online sobre el crecimiento y la visibilidad de las cuentas, el contenido publicado y la interactividad con los seguidores. Los resultados evidencian que el núm…

Transitions to Working Life: Securing Professional Competence

2014

This chapter examines the transition from education to work as a critical phase of professional career and the development of professional competence Literature on transition to working life has identified several challenges that many graduates meet in the early stages of their career such as: threat of unemployment, inadequate knowledge and skills, decreased self-efficacy and increased stress, instability of professional identity, newcomers’ role and position in a work community, early attrition and changing occupation. The importance of workplace learning in supporting graduates as they transit to the workplace is influential in assisting graduates deal with these challenges. This chapter…

HDR-ARtiSt: High Dynamic Range Advanced Real-Time Imaging System

2012

International audience; This paper describes the HDR-ARtiSt hardware platform, a FPGA-based architecture that can produce a real- time high dynamic range video from successive image acquisition. The hardware platform is built around a standard low dynamic range (LDR) CMOS sensor and a Virtex 5 FPGA board. The CMOS sensor is a EV76C560 provided by e2v. This 1.3 Megapixel device offers novel pixel integration/readout modes and em- bedded image pre-processing capabilities including multiframe acquisition with various exposure times. Our approach consists of a hardware architecture with different algorithms: double exposure control during image capture, building of an HDR image by combining the…