When looking at domains with several building densities, the resulting average concentrations caused by traffic when unknown, are often linearised between known building densities. To verify if this assumption is correct, several cases of street canyons with intersections, are simulated using the DALESURBAN model. The traffic is represented by a constant emission line source spanning the entire...

Periodic noises are unwished and spurious signals that create repetitive pattern on images and decreased the visual quality. Firstly, this paper investigates various methods for reducing the effects of the periodic noise in digital images. Then an adaptive optimum notch filter is proposed. In the proposed method, the regions of noise frequencies are determined by analyzing the spectral of noisy...

background & objective:  periodic paralyses are a group of rare disorders that cause temporary episodes of muscle weakness or paralysis.  hypokalemic periodic paralysis usually is transmitted by an autosomal dominant trait with more penetration in men.  hypokalemic periodic paralysis may be secondary to thyrotoxicosis, hyperparathyroidism, drug  toxicity and potassium losing states. sporadic fo...

In-depth understanding and accurate simulation of hydrological processes are great significance for sustainable development management water resources. The study focused on a semi-arid catchment, the upper Tang River catchment in northern China, investigated performance RCCC-WBM model based detection results trend, mutation, periodicity. Results show that (1) as result climate change intensive ...

The high-mass X-ray binary LS I +61$^\circ$303 is detected across the electromagnetic spectrum from radio until very high energy gamma-ray regime. emission not only highly variable on many time scales, but also periodic at all observed wavelengths. Periodic modulation was different time-scales, ranging hours, over months to several years. subject of this article a super-orbital, long-term ~4.6 ...

Abstract The traditional drought field studies are inadequate to study characteristics from the perspective of trend and periodicity at same time, especially compare interannual interdecadal variations different types in reveal their similarity difference patterns. Pearl River Basin (PRB) was determined this paper using standardized precipitation evapotranspiration index (SPEI) empirical orthog...

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The evidence to date suggests that the use of mind-body medicine in chronic pain management can improve physical and psychological symptoms. However, past research evidence has largely relied on global measures of distress at pre- and post-intervention. Even though it is plausible that reported anxiety occurs in the context of pain, there is also evidence to suggest a reciprocal relationship. T...