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The intelligent devices have taken us to a convenient and fashionable era, however while we use a pedometer to calculate the number of steps, the blind even do not have the ability to walk independently. There is no doubt that they are eager for convenience and freedom, based on this, this article proposes an intelligent system that assists the blind in walking. The system consists of a crutch and...
Dimensional models have been proposed in psychology studies to represent complex human emotional expressions. Activation and valence are two common dimensions in such models. They can be used to describe certain emotions. For example, anger is one type of emotion with a low valence and high activation value; neutral has both a medium level valence and activation value. In this work, we propose to...
It is well known that there is much electromagnetic interference on the gases insulated switchgear (GIS) operation environment, and which would bring some difficulties to distinguish the actual partial discharge signals with those interference. In this paper, three kinds of measures are introduced in detail, which have been proved to be effective to realize anti-interference for GIS partial discharge...
This paper studies the calculation of acoustic pressure for self-focusing spherical ultrasonic transducer. By way of physical acoustics method, the integral expression of acoustic pressure for self-focusing spherical ultrasonic transducer is deduced in the combined coordinate system which contains spherical coordinate system and cylindrical coordinate system, and then the integral expression is simulated...
The pilotless fruit-transportation gyrocar works in the economic forest, avoiding the obstacle on the rail is the prerequisite of its safe working. An ultrasonic obstacle avoidance system of fruit-transportation gyrocar based on ARM embedded system is introduced in this article. The functions of the system are implemented. It could make the gyrocar stop when detect an obstacle and sends the information...
Speech contains additional information than text that can be valuable for automatic speech summarization. In this paper, we evaluate how to effectively use acoustic/prosodic features for extractive meeting summarization, and how to integrate prosodic features with lexical and structural information for further improvement. To properly represent prosodic features, we propose different normalization...
Mandarin objective assessment plays a very important role in the speech assessment. It still has a long way to go before it reaches the level of success. In this paper, the novel mandarin objective assessment based on Support Vector Machine (SVM) is proposed. The mandarin pronunciation is divided into consonant, vowel and tone. And the feature parameters of pronunciation are surveyed. The experimental...
During the recent years, numerous utilities have experienced catastrophic rupture of critical Prestressing Concrete Cylinder Pipe (PCCP) lines throughout the world. Because PCCP is usually used throughout many water and wastewater utilities as critical mains with high flow rates, sudden failures can have significant negative consequences. Much attention has been focused on reliably assessing the condition...
PCCP is usually used throughout many water and wastewater utilities as critical mains with high flow rates, sudden failures can have significant negative consequences. The world has experienced a number of failures of prestressing concrete cylinder pipe (PCCP) lines and as a result during the past ten years, much attention has been focused on reliably assessing the condition of PCCP mains. In this...
Liposomal hydrogel formulations of lidocaine hydrochloride(LDH)have been prepared and drug percutaneous permeation and release properties in vitro have been evaluated. An optimal hydrogel prescription with carbopol as base involved permeation enhancers as polyethylene glycol (PEG-400), Azone, poloxamer and propylene glycol was screened in vitro. Percutaneous permeation kinetic models of LDH in three...
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