Search results for "BED"
showing 10 items of 1605 documents
Performance evaluation of OpenFlow enabled Commodity and Raspberry-pi Wireless Routers
2017
Software defined network (SDN) allows the decoupling of data and control plane for dynamic and scalable network management. SDN is usually associated with OpenFlow protocol which is a standard interface that enables the network controllers to determine the path of network packets across a network of switches. In this paper, we evaluate openflow performance using commodity wireless router and raspberry pi with two different SDN controllers. Our test setup consists of wired and wireless client devices connected to openflow enabled commodity wireless router and raspberry pi. All clients used traffic generator tool to transmits data to a sink server host. The results are promising and paves the…
Design and implementation of a portable fNIRS embedded system
2015
We report on the design, development and operation of a portable, low cost, battery-operated, multi-channel, functional Near Infrared Spectroscopy embedded system, hosting up to 64 optical sources and 128 Silicon PhotoMultiplier optical detectors. The system is realized as a scalable architecture, whose elementary leaf consists of a probe board provided with 16 SiPMs, 4 couples of bi-color LED, and a temperature sensor, built on a flexible stand. The hardware structure is very versatile because it is possible to handle both the switching time of the LED and the acquisition of the photodetectors, via an ARM based microcontroller.
Acoustic and optical variations during rapid downward motion episodes in the deep north-western Mediterranean Sea
2011
An Acoustic Doppler Current Profiler (ADCP) was moored at the deep-sea site of the ANTARES neutrino telescope near Toulon, France, thus providing a unique opportunity to compare high-resolution acoustic and optical observations between 70 and 170 m above the sea bed at 2475 m. The ADCP measured downward vertical currents of magnitudes up to 0.03 m s-1 in late winter and early spring 2006. In the same period, observations were made of enhanced levels of acoustic reflection, interpreted as suspended particles including zooplankton, by a factor of about 10 and of horizontal currents reaching 0.35 m s-1. These observations coincided with high light levels detected by the telescope, interpreted …
The absorption of light energy in flat fluidized photoreactors
1990
Abstract A flat fluidized bed with transparent walls is an ideal reactor for gas-solid photocatalytic or photoassisted reactions. This paper presents the relati
A Web Application for the Remote Control of Multiple Unmanned Aerial Vehicles
2019
Unmanned Aerial Vehicles (UAVs) are receiving an increasing attention from the research and industry community, and today they are adopted for several civilian and military applications. However, state of the art technologies are still based on a single UAV either directly controlled by the human operator or supervised through the manual definition of a flight plan. As a result, scalability is still a significant limitation for such systems, especially when large areas need to be monitored. In this paper we propose a web based application for the control of multiple UAVs. The application has three layers. The first layer allows the user to remotely submit a monitoring mission through a web …
Prevalence of tooth erosion and associated factors in 13-16-year old adolescents in Greece
2012
Objectives: The aim of this study was to estimate the prevalence of dental erosion and to investigate possible associations among dental erosion and medical history, dietary and lifestyle habits in a sample of adolescents in Greece. Study design: The study sample consisted of 770 adolescents, 374 boys and 396 girls aged 13 to 16 years. All individuals were clinically examined and answered questions regarding their medical history, rate and frequency of drinks and food consumption and lifestyle habits. Statistical analysis of the questionnaire items was performed by using the multiple logistic regression analysis model. Results: Two hundreds and sixty adolescents were diagnosed as having den…
The role of partners and children for employees' daily recovery
2014
Abstract This multi-source diary study examined the role of partners for employees' daily recovery in a sample of dual-earner couples. We hypothesized that employees' daily psychological detachment from work during the evening should be positively associated with their partners' daily psychological detachment during the evening. Employees' affective well-being (serenity and negative activation) at bedtime should be influenced not only by their own psychological detachment, but also by their partners' psychological detachment. Moreover, we hypothesized that the presence of children in a couple's household should moderate the relations between partners' psychological detachment on the one han…
Being mindful at work and at home
2018
In this daily diary study, we examined the moderating role of employee domain‐specific mindfulness within the stressor–detachment model (Sonnentag & Fritz, 2015, Journal of Organizational Behavior, 36, 72). According to the stressor–detachment model, emotional and quantitative demands should be associated with decreased psychological detachment after work, which in turn is associated with decreased well‐being (i.e., low positive affect and high negative affect) at bedtime. Moreover, we proposed that both mindfulness at work and home should buffer the relations between job demands and psychological detachment and between psychological detachment and well‐being. Sixty‐five employees compl…