Omni Directional Indoor Mobile Robot

This paper presents an approach which uses an omni–directional robot for indoor use. The use of the omni-directional robot describes a ‘no head no tail’ robot. This will reduce movement recovery in time and space. In additions its mechanism makes it possible to run as a reactive robot without any complex programming. This robot is designed to use an algorithm control (reactive) based on the vision control system. The aim of this project is to design an indoor mobile robot for jogging partner operation

Development of a Practical Motorcycle Towing Device

Motorcycle to motorcycle towing device is not readily available in the Malaysian market. Most of the motorcycle towing service uses a pick-up truck to pick up the motorcycle. Such towing or on-site service fee can be too expensive anyway. In addition, some of the towing processes are done only using a foot to propel the towed motorcycle. The aim of this project to produce a product that can be commercialized and solve the problem. In this project, a prototype is produced after the fabrication process. The prototype seemed to function. The length of the sling successfully retracted for storing, thus the sling retractor is working as intended

Influence of stimulus polarity on the auditory brainstem response from level-specific chirp

Background and Objectives: No known studies have investigated the influence of stimulus polarity on the Auditory Brainstem Response (ABR) elicited from level-specific (LS) chirp. This study is important as it provides a better understanding of the stimulus polarity selection for ABR elicited from LS chirp stimulus. We explored the influence of stimulus polarity on the ABR from LS chirp compared to the ABR from click at 80 dBnHL in normal-hearing adults. Subjects and Methods: Nineteen adults with normal hearing participated. The ABRs were acquired using click and LS chirp stimuli using three stimulus polarities (rarefaction, condensation, and alternating) at 80 dBnHL. The ABRs were tested only on the right ear at a stimulus rate of 33.33 Hz. The ABR test was stopped when the recording reached the re- sidual noise level of 0.04 μV. The ABRs amplitudes, absolute latencies, inter-peak latencies (IPLs), and the recorded number of averages were statistically compared among ABRs at different stimulus polarities and stimuli combinations. Results: Rarefaction polarity had the largest ABR amplitudes and SNRs compared with other stimulus polarities in both stimuli. There were marginal differences in the absolute latencies and IPLs among stimulus polarities. No significant difference in the number of averages required to reach the stopping criteria was found. Conclusions: Stimulus polarities have a significant influence on the ABR to LS chirp. Rarefaction polarity is recommended for clinical use because of its larger ABR peak I, III, and V amplitudes than those of the other stimulus polaritie

Bio-Physics Concept For Camera Vision Hypothesis Of Colour White

In the myriad of colours, black and white are strange colours to be discussed. Since black (the colour that one perceives) is not in the Electromagnetic (EM) spectrum, it is duly suggested that black is an interpretation of the brain in which the existing “no signal” concept is also discussed in the article. The same goes to the colour white, it is not in the EM spectrum too, so it is also duly proposed as an interpretation of the brain. The concept of white as combination of colour is also discussed in the article. It is insignificant to discuss about both these colours of their existence in the reflection of colour representation since their non-existent in EM spectrum is similar to the colour pink or magenta. There is a hypothesis (for white light colour theory test) at the end of this article, the authors welcome any scientists or engineers or researcher all over the world to assess, deliberate and prove the truth of this theory

Gravitational Wave & Relativity Impact Electronic Communication & Engineering

About a few months ago (Feb 11, 2016), the LIGO (Laser Interferometer Gravitational-Wave Observatory) scientist team researchers made an announcement that they had confirmed the gravitational wave already detected on Sept 14, 2015 (by LIGO’s twin detectors in Livingston, Louisiana and Hanford, Washington). The wave was predicted by Einstein back in 1916 with his theory of General Relativity. This paper is about gravitational wave and relativity theory that may contribute to the field of Telecommunication and other engineering as well

Gravitational Wave & Relativity Impact Electronic Communication & Engineering

About a few months ago (Feb 11, 2016), the LIGO (Laser Interferometer Gravitational-Wave Observatory) scientist team researchers made an announcement that they had confirmed the gravitational wave already detected on Sept 14, 2015 (by LIGO’s twin detectors in Livingston, Louisiana and Hanford, Washington). The wave was predicted by Einstein back in 1916 with his theory of General Relativity. This paper is about gravitational wave and relativity theory that may contribute to the field of Telecommunication and other engineering as well

Automatic Firing Pin Impression Identification based on Feature Fusion of Fractal Dimension and Geometric Moment

Automatic firearms identification based on the physical evidence of firing pin impression is very vital for forensic investigation. Currently, due to complex topography of firing pin impression, the firearms identification has been performed manually and the precision of comparisons relies on the human expertise. This approach normally requires a long time to observe through a large number of image database. To overcome this problem, an automatic ballistics identification system using the feature fusion of fractal dimension and geometric moment is proposed. In this study, eight fractal dimension features and 11 geometric moment features were extracted from firing pin impression images of five pistols of the Parabellum Vector SPI 9 mm model. These features were passed to five different machine learning methods for classification. The experimental results indicated that the neural network classifier achieved the highest classification performance of 99.3%, which is a very promising result. In conclusion, the features fusion of fractal dimension techniques and geometrical moments, with neural network as classifier yields impressive results towards automatic pistol detection

Effects of ambient acoustic noise on auditory brainstem response to level-specific chirp and click stimuli in normal-hearing adults

Background and Objectives Despite few reports on the influence of ambient acoustic noise on auditory brainstem response (ABR) to click stimuli, its effects on ABR to level-specific (LS) stimuli have not been systematically investigated. This study aimed to investigate the influence of ambient acoustic noise on ABR findings using both LS chirp and click stimuli. Subjects and Methods Twelve normal-hearing adults participated in this repeated measure design study. The ABRs were acquired at 80, 50, and 30 dBnHL using two stimuli (LS chirp and click) under two conditions (quiet and noise). The ABRs under noise conditions were acquired using babble noise and white noise. The noise level was set at 55 dBA. Two-way repeated measure analysis was used to identify the main effects of the test conditions, stimulus types, and their interactions at a 95% confidence level. Results No significant influence of ambient acoustic noise on ABR findings was identified at all intensity levels. No significant difference was found in the number of signal averages to reach the 0.04 μV residual noise as stopping criteria among the ABRs recorded with different types of stimuli and test conditions. The ABR waves I and V amplitudes were larger with LS chirp than with click stimulus. Conclusions Ambient acoustic noise has no significant influence on ABR findings and the ABR test time based on the 55 dBA noise level used in this study