On the other hand, permeable coverings can be considered as a passive control method of indoor conditions and, consequently, have implications in the perception of indoor air quality, local thermal comfort, and energy savings.
These were developed as simplified methods of predicting indoor conditions from those outdoors.
The methods of sampling indoor, and ambient air differed and although we did not conduct side-by-side comparisons, systematic differences of up to 17% have been previously reported (Williams et al. 2000).
The growth of short-range wireless communication networks, both for personal or industrial purposes, as well as the compatibility between network devices (WiFi-certified), has contributed to the development of radiodetermination methods for indoor environments.
However, since satellite signals do not penetrate buildings adequately, it is not possible for such systems to function in indoor environments, which has led to a variety of proposed methods for indoor localization and tracking in an attempt to provide seamless and ubiquitous services for mobile users [2 14].
This paper therefore presents a review of metrics and methods for indoor daylight availability assessment, as well as estimation methods used for predicting potential energy saving from daylight.
In the future, allergists will have to answer more frequently to patients and to building professionals on the relation between allergy and housing and methods of improvement of indoor air quality.
A second group of references apply the previous methods to indoor scenarios.
In section 3, we present the design and implementation method of the indoor navigation system, and in section 4, we present the test results for this indoor navigation system.
This outdoor application is in line with the results of the application of our method to indoor environmental data from a WSN.
