Saturday, 21 September 2019

Engineering Journal: April 2019

Engineering Journal: published its volume-5, Issue-4, April 2019 with AD Publications

A Review: Use of Geo-grid in Construction of Flyover

Abstract A pavement structure consists of numerous layers out of which sub-grade plays a vital role for the very first purpose of distributing and transmitting traffic loads coming over it to the strata underneath. What’s more if layer of sub-grade in pavement comprises of extensive soil i.e. soil containing montmorilonite mineral, at that point because of changes in water content and consequent swelling and shrinkage that may result into numerous of failure resulting into rutting, bumps, reduction in bearing capacity of pavement. Changing the available soil probably won’t be a reasonable alternative, therefore to defeat all these hurduls, use of geo-synthetics is found to be the best solution resulting into better performance by reduction in cost and reduction in vertical deformation of pavement structures over sub grades of shifted strengths. Anyway the choice of stabilizer relies on the sort of sub-grade’s soil, sort of soil-improvement wanted, accessibility to stabilizer, ecological conditions, quality needed and toughness of balanced-out layer, various stabilizing procedures, and the most critical is money related factor. Geo-synthetics are generally utilized for some activities in particulars as filtration, partition, safety, drainage, fixing and so on. Especially for the last case, geo-synthetics with extra highlights have been created permitting a changeless checking of the deformations. Future geo-synthesis will be outfitted with such extra capabilities empowering a non-ruinous and changeless observing of structures worked with geo-synthetics. At any rate, geo-grid fortified construction represents momentous favorable circumstances regarding natural and monetary perspectives against the structures. It is likewise outstanding from field tests and wide-extend testing that geo-synthetic fortified contractions have a lot higher bearing strength than anticipated and that the distortions are too low than expectation. This paper went through the craft by different analysts on the strategies of adjustment of soil & utilization of geo-manufactured materials in quality improving.

Keywords Geo-grids, Geo-synthetics reinforcement, Sub-grade, Stabilization and improving strength of soil.

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At-Speed test Prominence

Abstract With the remarkable scaling down of technology, test engineers are encountered with new challenges. With the reduction technology moving down to Deep Submicron level, the digital designs are moving closer to the probability of defects related to time. The traditional Stuck-at tests and IDDQ tests can no more detect few distinctive faults which may be occurring due to issues related to timing of the signal. The defect spectrum is thus broadened by the inclusion of other types of faults such as high impedance shorts, in-line resistance, and cross-talk between signals. This paper proposes the use of At-Speed test which is better suited to detect the new types of failures that occur in a digital circuit due to its complex design. The use of At-speed test ensures the timing reliability of the chip after manufacturing thereby reducing DPM (Defect per million) rate. At-speed tests when added with the traditional stuck-at tests, guarantees maximum fault coverage and reduced DPM rates (@30 to 70%). Though At-speed testing is not a new concept and few ASIC vendors have been using this, they have been using functional test patterns to create them which are a very tedious and time consuming routine. Diagnosing the failure source also becomes difficult with the failure of functional patterns. This paper discusses about the fault models provided by industries leading ATPG tools that targets the At-speed failure.

Keywords At-Speed test, functional test patterns, fault coverage, Stuck-At-Test, IDDQ Tests.

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A Computer-Aided Justice Management System: A prototype for Universities in Uganda

Abstract Justice Management in any organisation is recipe for proper management and organisational prosperity. As error is to human, disputes are inevitable but should be resolved amicably. With a focus on higher institutions of learning justice administration and management is handy in managing competition and so profit maximization especially in the current privatization of higher education. The study aimed at designing a prototype for universities which ultimately helps local citizens to interpret law. Six universities were purposively selected and a cross sectional and design science research methodology employed. The study found that if improved the proposed justice management system would significantly reduce the prevailing challenges of case backlog, losses and postponed hearing records, timely and responsiveness of summons among others. However, in future the small messaging system (SMS) enabled systems could also be considered together with translator into major local languages.

Keywords Justice, Dispute, Rights, Electronic.

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Cost Effective Energy Monitoring System

Abstract Remote energy meter monitoring is an advanced energy meter formulated by our own which will overcome the problems faced in conventional metering system such as human interference which leads to incorrect billing. In this energy meter advanced technologies such as ARM microcontroller, Raspberry Pi, ADC, Seven segment display (SSD), Cloud (Thing Speak) have been used. This is the new device which is using CY8C4247AZI-M485 ARM Microcontroller and will display voltage, current, and power on SSD and send data on IoT cloud Platform through Raspberry Pi. It can be implemented for residential as well as for industrial purpose. The developed system replaces traditional meter reading methods and enables remote access of existing energy meter by the energy provider. Also it can monitor the meter readings regularly without the person visiting each house. The system collects and manages energy consumption data and provides billing information for the user. A user can easily monitor, manage, and control energy consumption and achieve energy cost saving using the proposed scheme.

Keywords ARM Microcontroller, Automatic Meter Reading System, Electronic Metering, IoT Cloud, Raspberry Pi 3b Model, Smart Meter.

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