Search results for "indoor"

2016

Abstract. Bioaerosols pose risks to human health and agriculture and may influence the evolution of mixed-phase clouds and the hydrological cycle on local and regional scales. The availability and reliability of methods and data on the abundance and properties of atmospheric bioaerosols, however, are rather limited. Here we analyze and compare data from different real-time ultraviolet laser/light-induced fluorescence (UV-LIF) instruments with results from a culture-based spore sampler and offline molecular tracers for airborne fungal spores in a semi-arid forest in the southern Rocky Mountains of Colorado. Commercial UV-APS (ultraviolet aerodynamic particle sizer) and WIBS-3 (wideband integ…

Wireless Internet. 8th International Conference, WICON 2014, Lisbon, Portugal, November 13-14, 2014, Revised Selected Papers

2015

In this paper, the influence and improvement of the localization accuracy achieved using a fingerprint database with information coming from different channels and radio signal strength levels is evaluated. This study uses IEEE 802.15.4 networks with different power levels and carrier frequency channels in the 2.4 GHz band. Experimental results show that selecting part of this information with a cleverer data processing can provide similar or better localization accuracy than using the whole database.

Assessment of ventilation equipment of groups of building by means of IAQ questionnaires

1995

IL COMFORT INDOOR, STRUMENTI LEGISLATIVI: PANORAMA LEGISLATIVO INTERNAZIONALE E NAZIONALE

2022

Già da qualche decennio si parla di IEQ (Indoor Environmental Quality) con particolare attenzione sulla salubrità dell’ambiente costruito e alla sua possibile influenza sulla sostenibilità ambientale. Tale interesse si è riversato per lo più sulla qualità dei prodotti e delle tecnologie dell’edilizia, incentrando la questione sulle prestazioni di essi e sugli effetti ambientali che essi generano. Con gli obiettivi previsti dall’Agenda 2030 si supera l’idea che la sostenibilità sia una prerogativa ambientale e si afferma una visione olistica mirata alla salute umana (obiettivo 3), emergendo la necessità di un passaggio da un approccio “Green” al costruito verso un approccio “Human Centred” c…

Influence of greenhouse different coverings on chemical and physical risk factors

2005

Crop production in greenhouses needs the use of chemicals and requires high levels of temperature and relative humidity to assure the increasing of crop production. This can cause risks for the health of the operators, especially if they are not equipped with protection devices. The risks may also vary with the type and/or size and/or shape of the protected structures. In order to determine the influence of different coverings on type and amount of risks, chemical and physical risk factors were measured inside greenhouses with different cladding materials (glass panels and plastic films) after crop management. In these two different greenhouses typologies, that were similar for location and…

Indoor Comfort in School Buildings: The Case Study of Palermo

2014

Buildings primary energy consumption in developed countries accounts for about 40% of whole uses. Therefore, the European Union has released many regulations, concerning energy saving issues; particularly, it has enacted Directive 2002/91/EC regarding the energy performance of buildings, and its Recast Directive 2010/31/EU, that promotes the Nearly Zero Energy Building targets, introducing more strict parameters in this aim. Furthermore, the latter Directive asks Member States to include within their national plans measures aimed at supporting public authorities to become early adopters of building energy efficiency improvements. In the same time, Public Authorities should implement effecti…

FINDR: Low-Cost Indoor Positioning Using FM Radio

2009

This paper presents an indoor positioning system based on FM radio. The system is built upon commercially available, short-range FM transmitters. The features of the FM radio which make it distinct from other localisation technologies are discussed. Despite the low cost and off-the-shelf components, the performance of the FM positioning is comparable to that of other positioning technologies (such as Wi-Fi). From our experiments, the median accuracy of the system is around 1.3 m and in 95% of cases the error is below 4.5 m.

Improving RF Fingerprinting Methods by Means of D2D Communication Protocol

2019

Radio Frequency (RF) fingerprinting is widely applied for indoor positioning due to the existing Wi-Fi infrastructure present in most indoor spaces (home, work, leisure, among others) and the widespread usage of smartphones everywhere. It corresponds to a simple idea, the signal signature in a location tends to be stable over the time. Therefore, with the signals received from multiple APs, a unique fingerprint can be created. However, the Wi-Fi signal is affected by many factors which degrade the positioning error range to around a few meters. This paper introduces a collaborative method based on device-to-device (D2D) communication to improve the positioning accuracy using only fingerprin…

VALUTAZIONE DELLA PRESENZA DEL GAS RADON IN IMPIANTI SPORTIVI INDOOR IN SICILIA E SARDEGNA.

2008

Relation between anaerobic power and rowing ergometer performance in young rowers

2013

Aims: Rowing performance over 2000m is dependent upon the functional capacity of both the aerobic and anaerobic energy pathways. Although several studies have indicated that maximal oxygen uptake is strongly related to rowing performance and it is the best predictor of performance in elite rowers, some evidence is that muscle power output could be an important predictor of performance. The aim of this study was to investigate the possible relationship between anaerobic power and rowing ergometer performance over 2000m in young rowers, and whether anaerobic power assessed could identify athletes with the best performance. Methods: We collected biometric characteristics and energy data, inclu…