Abstract The main purpose of the living technology curriculum is to cultivate students' interest in learning science and technology, further utilize their experience instructions develop ability integrate interdisciplinary knowledge skills. In recent years, as countries have begun emphasize concept integration school education, STEM (Science, Technology, Engineering, Mathematics, STEM) focuses ...

Formerly, once the audio data is compressed, transcoding is used to scale the bit rate, where decoding and re-encoding are taken place. Therefore, data manipulation of coded data has been very complex and time consuming work. In this paper, we describe three algorithms for bit rate scaling on coded MPEG data domain. One is bandwidth limitation method cutting higher frequency components until ta...

In today’s era of plasma and laser cutting, machines using oxy-acetylene flame are also meritorious due to their simplicity and cost effectiveness. The objective to devise a Computer controlled Oxy-Fuel profile cutting machine arose from the increasing demand for metal cutting with respect to edge quality, circularity and lesser formation of redeposit material. The System has an 8 bit micro con...

Abstract: This article aims to study the effects of shock-disturbed cracks on the cutting features of cone bits. By utilizing the Walsh’s model, a crack model was established for the damaged rock surrounding the induced hole, the intrusive coefficient of the cone bit was derived, and the drilling rate equation around the induced hole was formulated. The effects of crack density and disturbance ...

In the classical approach, cutting forces and cutting power in sawing processes of orthotropic materials such as wood are generally calculated on the basis of the specific cutting resistance kc (cutting force per unit area of cut). For every type of sawing kinematics (frame saws, band saws and circular sawing machines) different empirical values of specific cutting resistance kc have to be appl...

This paper presents a software-only MPEG encoder implementation which uses adaptive quantization and scene change detection to enhance the image quality. Scene change detection is coupled to the bit-allocation process, providing a more constant image quality over time. Simultaneously, it is used to assign picture coding types for enabling easy, lossless cutting at scene change positions in a la...