To accurately classify and identify the different corrosion patterns on inner walls of water-supply pipes with morphologies complex variable backgrounds, an improved VGG16 convolutional neural network classification model is proposed. Firstly, S.E attention mechanism added to traditional VGG model, which can be used distinguish importance each channel feature map re-weight through globally calc...

Usually, the heating, ventilation, and air conditioning (HVAC) duct system in buildings is a complex network of hollow metal pipes of rectangular or circular cross-section which behave as multimode waveguides when driven at RF and microwave frequencies of common interest. HVAC ducts can be used as a wireless communication channel for providing high-speed network access to offices [1]. An exampl...

The quality of plastic pipes is negatively affected by many destabilizing factors, which include improper operation the traction mechanism, vacuum forming, cleanliness forming head, dependence on screw, etc. All these factors affect product. But an important factor among reasons, course, temperature molten raw material and its stability over entire production cycle. Due to inaccurate setting ch...

In this study the regulation of squamous cell differentiation in several rat esophageal epithelial cell lines is examined. Nontumorigenic RE-149 cells undergo a program of squamous cell differentiation at confluence. This program of differentiation is influenced by the concentration of calcium in the medium and by the presence of retinoic acid. High calcium concentration stimulates terminal cel...

This paper examines the detection of parameterized shapes in multidimensional noisy grayscale images. A novel shape detection algorithm utilizing random sample theory is presented. Although the method can be generalized, line detection is detailed. Each line in the image corresponds to a point in the line parameter space. The method creates hypothesis lines by randomly selecting parameter space...

Transport networks are facing new challenges and opportunities because of the explosive growth of data traffic. Besides having to meet the ever increasing bandwidth demand, transport networks need to provide new functionalities for the support of data applications. For example, they should provide elastic data pipes which guarantee minimum bandwidths but also allow expansion when extra bandwidt...

In the present research, nonlinear vibration in a coupled system of Boron-Nitride nano-tube reinforced composite (BNNTRC) oil pipes is studied. Single-walled Boron-Nitride nano-tubes (SWBNNTs) are arranged in a longitudinal direction inside Poly-vinylidene fluoride (PVDF) matrix. Damping and shearing effects of surrounded medium are taken into account by visco-Pasternak model. Based on piezoele...