Samreen Amir

A Vision System for Autonomous Weed Detection Robot

In this paper, a vision guidance system for automated weed detection robot is presented. The developed vision system use series of image processing techniques to detect the inter-row space between the crops and then calculate the current pose and orientation with the help of Hough transform. The dynamic model is used for evolution of values over time and to predict the changes in pose and orientation from frame to frame. The vision system is implemented and simulated in Matlab, and it is observed that the developed system successfully detects and calculates the pose and orientation of the crop boundaries on both real and synthetic images.

Localization of WSN node based on Time of Arrival using Ultra wide band spectrum

In this paper, the proposed methodology calculates the distance between two nodes in Wireless Sensor Network for localization purpose. The methodology is a variant of Time of Arrival (TOA) methodology. The simulations are done in Matlab using Ultra wide band spectrum and Gaussian monocycle pulses. The measured distances are compared with set distances and mean square errors are calculated. Finally, the set distance and measured distances are compared for various transmission frequencies within UWB spectrum.

The Pivotal Role of Tera-scale Performance in Future Networks: Sequoia vs Multi-core Teraflop Chip

With the increasing greed for the high data rates and maximum bandwidth utilization, the technology improvement and enhancement is been exponential in the current decade. Researchers hope that massive parallel processing (MPP) computing equipment will provide processing rates of 10 trillion or quadrillion floating-point operations per second. It would allow scientists to build models of phenomena that have never before been imitated. Many vendors are busy in the research and development of such speedy machines. This paper will provide a comparative analysis of the future high computing machines in terms of speed, size applications, architecture and affordability. A predictive conclusion regarding the dominance of one on the other will also be drawn on the basis of this comparison.

The Analysis of the Artifacts due to the Simultaneous Use of Two Ultrasound Probes with Different/Similar Operating Frequencies

The ultrasound imaging has the potential to become a dominant technique for noninvasive therapies and least invasive surgeries. Few cases may require using multiple probes of different units with different modes of ultrasound on the same patient. It generates imaging artifacts, which makes it complicated to gather information from the acquired image. This study was to identify and analyse the artifacts which are produced by simultaneous use of two probes with different/same operating frequencies. Six imaging studies were performed. First of all, the imaging artifacts of the 3.5 MHz and 6 MHz center frequencies with similar (longitudinal) positions of the probes. Secondly, with similar operating frequencies the 6 MHz probe changed from longitudinal to transverse placement to analyse the resulting artifacts. The third study was done with transverse placement of 3.5 MHz probe. The rest of the three cases were just the repetition with common pulse frequencies. Such artifacts in 3D ultrasound images are more obscure than the other artifacts associated and reported.

Experimental Study to Evaluate the Significance of Musical Stimuli in Reorientation of Fetal Head Position

ABSTRACT The effect of music on fetal behavior and deploying music therapy to reorient the breech baby has been reported. This study aims to statistically evaluate the degree of significance of using music for such applications. It is hypothesized that the musical stimulus can elicit enough fetal response to make it change its position. Quad- instrumental is composed and applied to the mother’s abdomen near the fetal head in controlled environment. The fetal basic parameters such as fetal age, fetal weight, gender, etc. are observed and the type of instrument that causes the maximum change is recorded. Out of the 46 subjects there were 32 female and 14 male fetuses. Thirteen showed displacement when stimulus was moved away from the head. The percentage of success is 28.2 hence not positive but still helpful to analyze the parametric differences between favorable and unfavorable outcomes in terms of displacement. Overall, responses of the fetuses to the given stimulus were positive and discussed. While the success rate is lower than expected, this study examined many factors that could influence the displacement results. The experiment results do not support the hypothesis that musical instruments can consistently elicit head movements from fetuses.

Lane tracking and autonomous cruise control for automatic highway system

In this paper a vision based lane tracking and velocity dependant cruise control system is presented as automatic highway system. The system developed, uses different image processing techniques to detect lanes. It maintains a safe distance by calculating the distance from the leading vehicle. For lane tracking and to calculate the orientation of the vehicle on the road, Hough transform is used. On the other hand, a PID controller is designed for the nonlinear vehicle dynamics in order to track the velocity of the leading vehicle and to maintain a safe distance. The complete model has been implemented and simulated using Matlab and the results shows that the system successfully detects the lanes and the distance from the leading vehicle.

Proposed Inductor Design for High Speed Digital Communication Systems through Divergence Analysis of Self Inductance and Variability in Permeability Values of Unaltered Human Hair

The Dielectric Losses associated with inductors play more considerable role at higher frequencies. Parasitic capacity determines the magnitude of these losses. The permeability is one of the factors that affect self-inductance of a solenoid directly. Change of medium from free space to any other element like iron or plastic may change the behavior of solenoid. Human hair is primarily composed of keratin. Keratin is considered as a good insulator. However an electric charge gained by the hairs due to friction and this phenomenon is called tribo-electric effect. It gives hair an ability to become charged with static electricity. The scenario tested with coils is wrapped around human hairs and the air between them as a medium. It is hypothesized that replacement of iron by human hair will vary the self-induction. The reference or test validation platform for the experiment was an air and iron core inductor. The reason behind this choice was its wide use in various applications like power supplies, metal detectors, car ignition coils and even in high speed digital systems. The observed values of induced e.m.f for the scenario are used to analyze the deviation in self-Inductance phenomenon. The theoretical model for the air and iron core solenoid is also compared with the resulting values to calculate and reaffirm the permeability values of the human hair especially for South Asian ethnic region.

Design and Implementation of a Pressure Sensor on Proteus

This paper provides an overview of designing a Pressure sensor with its implementation on Proteus. We have worked on the concept of Autonomous Nodes with Control Unit (CU) and Master Unit (MU). When the pressure of gas increases in the pipe, the sensor senses it and the control unit will receive transmission from the active node, either to open or close the valve and actively communicates the result to master unit, whenever the status of signal changes. All the autonomous nodes are connected to MU. This system is designed to cope up with the excessive pressure of gas as to reduce the risk of accident.

Software Based Acoustic Modem

In this paper, an acoustic band based software modem is designed and implemented for wireless communication between two personal computers. Its based on an investigation of the theoretical techniques required to develop a modem capable of digital data transmission in an indoor airborne acoustic environment, and the subsequent software development. Text files are used as information to demonstrate the operation and are being built under MATLAB code, modem uses 4-QAM modulation scheme. To realize modem in real-time, the software is developed that converts text in to voice, which is then modulated and transmitted over wired or wireless medium and received on the microphone of the receiver side. This received voice is then again converted to the text and displayed on the computer screen. The design encompasses a significant proportion of the signal synthesis and recovery process is performed digitally in software so that the burden on analogue RF hardware is minimized.

RCM: A User Friendly Router Configuration Machine

In this paper a router configuration machine for Cisco routers using GUI is presented. It is developed using Visual C# .NET programming, in which the interface provides GUI platforms for various types of configuration for entire series of Cisco routers. It communicates with the Cisco Internetwork Operating System to configure the router. It includes the configuration for all interior routing protocols and all types of most common used tools. The developed system is implemented on different series of Cisco routers and it worked successfully. It is observed that it eliminates the traditional use of command line interface for configuration of Cisco routers. The router configuration machine is such an idea which never existed before in such an easy level. The machine will be a perfect tool for anyone using a router. The machine also allows for real-time monitoring of network devices and constant performance checking. By providing embedded network intelligence at the network device level, the networks can monitor themselves and adapt to changing topologies, without the need of costly external mechanisms. This machine will also be useful for academic purposes and we can use this machine in any Communication Lab.