This study investigated the temporal behavior of grand piano actions from different manufacturers under different touch conditions and dynamic levels. An experimental setup consisting of accelerometers and a calibrated microphone was used to capture key and hammer movements, as well as the sound signal. Five selected keys were played by pianists with two types of touch ("pressed touch" versus "...

Scour in bed material downstream weirs is considered the most unfavorable process which threats the overall stability of the weir. Weirs with oblique angle in the horizontal plan will affect the scour profile downstream the structure and may reduce it. The objective of this paper is to investigate the effect of oblique weir angle on the scour profile. Furthermore, the effect of V-notch angle on...

Weirs are often constructed on mountainous rivers because of their low construction costs and ability to provide irrigation facilitate landscaping, yet there is little research how fish habitat quality in responds weir distribution. This study categorized the distribution characteristics weirs typical reaches according sinuosity calculated corresponding suitability index (HSI) weighted usable a...

In the last three decades the design of stepped spillways regained some interest because of their suitability with new construction methods including gabion placement. In this study, the hydraulic performances of gabion stepped weirs were investigated experimentally in terms of the air-water flow properties and energy dissipation rate. A physical study was performed in a relatively large size f...

The purpose of this research is examining the performance rectangular broad and sharp crested weirs in terms cavity index discharge coefficient. For purpose, a computational fluid dynamics CFD code FLUENT applied. Firstly, verified by applies on experiments work Hagre et al 1994 results show excellent agreements between Hager 1994. Secondly applied both weirs. demonstrate that have lower coeffi...

OBJECTIVE To report a patient with genetically proven DYT1 dystonia who shows dramatic improvement in symptoms while playing the piano. DESIGN Case study. SETTING Sobell Department for Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, England. PATIENT A 49-year-old right-handed male civil servant. MAIN OUTCOME MEASURES The patient was videotap...

Labyrinth weirs have not a straight crest in the perpendicular direction to the flow. The plan view of the weir consists of multiple and broken linear crests that cause the increase of its effective length. The advantages of this type of weirs are higher discharge capacity, easy aeration as well as low fluctuations of water surface at the weir upstream. This paper deals with the simulation of t...

This paper presents our experiences with the use of feed forward neural networks for piano chord recognition and polyphonic piano music transcription. Our final goal is to build a transcription system that would transcribe polyphonic piano music over the entire piano range. The central part of our system uses neural networks acting as pattern recognisers and extracting notes from the source aud...