Windows reduce the sidelobe leakages from the spectrum when applied to finite length time domain sequence. Adjustable windows can be used to control the amplitude of sidelobes with respect to main lobe. This paper presents the effect of window parameter in Dolph-chebyshev, Kaiser, Gaussian and Tukey windows on the Signal to Noise Ratio(SNR) of radar returns and proposes an optimum value of wind...

Objective To explore the relationship between window opening ratio and natural lighting energy consumption of University Gymnasiums in severe cold area, put forward optimization strategies. Methods Digital simulation technology was used to simulate Gymnasium ratio, scheme with low obtained. Conclusion The side should be small medium-sized university gymnasiums. Within range experimental data, N...

Recently, there have been significant concerns regarding excessive energy use in office buildings with a large window-to-wall ratio (WWR) because of the curtain wall structure. However, prior research has confirmed that impact window area on consumption varies depending building size. A newly proposed window-to-floor (WFR) correlates better building. In this paper, we derived correlation by ana...

The windows can be responsible for unnecessary energy consumption in a building, if incorrectly designed, shadowed or oriented. Considering an annual thermal comfort assessment of a space, if windows are over-dimensioned, they can contribute to the increase of the heating needs due to heat losses, and also to the increase of cooling needs due to over-exposure to solar radiation. When under-dime...

BACKGROUND Airway remodeling in asthma and COPD results in bronchial wall thickening. The thickness of the bronchial wall can be measured in high-resolution computed tomography. The objectives of the study were to assess the bronchial lumen and wall dimensions in asthma and COPD patients, in relation to disease severity, and to compare the airway dimensions in patients with asthma and COPD. M...

We numerically investigate the ability of ambient noise surface wave interferometry to invert for anelastic attenuation. Shorter correlation time windows leads to higher signal-to-noise ratio of empirical Green’s functions (EGF’s). We show, however, that it is necessary to correct for the window length and that this is especially important if short time windows are employed. Furthermore, we sho...