1,159,404 research outputs found
A working report on online task management system, Grameenphone limited
This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Computer Science and Engineering, 2005.Cataloged from PDF version of thesis report.This is basically a presentation about the internship and what responsibilities I have gone through. My basic job was to help the process team to develop an Online Task Management System. This is completely based on PHP and MYSQL as its default database. The second part is a small development on FLASH animation for GrameenPhone’s newly launch product MOBICASH. Hope everyone likes it.Adil HossainB. Computer Science and Engineerin
The application of soft systems methodology to supply chain risk managment in small and medium enterprises
A research report submitted to the School of Mechanical, Industrial & Aeronautical Engineering, Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the Degree of Master of Science in Engineering, 2015Supply chain risk management is one of the strategies that assist enterprises in the identification, assessment and control of supply chain risks. With the increased dynamics and complexity of supply chain risks for small and medium enterprises, an innovative approach in analysing these risks is required. The purpose of this research is to assess supply chain risk management in five small and medium enterprise cases using soft systems methodology.
The systems thinking approach will assist in the analysis of the dynamics and complexity of supply chain risks for small and medium enterprises. A qualitative approach was utilised to obtain insight into current issues that small and medium enterprises, in the manufacturing sector, face within the supply chain.
The results of the application of soft systems methodology on small and medium enterprises for obtaining insight into supply chain risk management for these enterprises proved to be fruitful. The replication logic used in each case, lead to similar results as expected
Recent Advances in High Altitude Pseudosatellites (HAPS) and Potential Roles in Future Earth Observing Systems
In August 2001 the NASA Environmental Research Aircraft and Sensor Technology (ERAST) Program flew the Helios aircraft to an altitude of nearly 100,000ft, demonstrating a new type of remote sensing platform. Nearly 20 years later the earth science community has unmet observational requirements to loiter over regions of interest for days or weeks as well as to follow airmasses to study chemistry and dynamics in concert with spaceborne observations. Recent advances in materials science and engineering have enabled improved battery power density, solar panel efficiency, and light yet strong structural materials required to effectively operate high-altitude (50-70k ft altitude) Pseudo-Satellites (HAPS) for 30+ days. The rapid commercialization of small unmanned aircraft has also contributed to the maturation of HAPS by making avionics, GPS, and other sub-systems smaller and less expensive. HAPS payloads provide high-resolution data that complement geostationary and polar orbiting satellites, while also enabling in-situ sampling of atmospheric chemistry and dynamics. Recent commercial interest in HAPS for 4G/5G and WIFI has funded development of a new generation of aircraft available to the science community. Here I report on a project under the NASA Airborne Science Program to test and demonstrate earth observations from a prototype aircraft being developed under a NASA Small Business Innovative Research Phase II. This aircraft will demonstrate the ability for a solar electric aircraft to deliver a 2u cubesat-based passive optical imaging satellite to 70,000ft for 30 or more days. Discussion will include the anticipated maturation timeline for HAPS, development and operational challenges, and examples of mission concepts that might contribute to future earth observing systems
Evaluation of fit for 3D printed retainers as compared to thermoform retainers
ABSTRACT
EVALUATION OF FIT FOR 3D PRINTED RETAINERS AS COMPARED TO THERMOFORM RETAINERS
By David Cole, D.M.D.
A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Dentistry at Virginia Commonwealth University
Thesis Directors: Eser Tüfekçi, D.D.S., M.S., Ph.D., M.S.H.A.
Professor, Department of Orthodontics
Sompop Bencharit, D.D.S., M.S., Ph.D.
Associate Professor and Director of Digital Dentistry, Department of General Practice
Introduction: Despite recent advances in three-dimensional (3D) printing, little information is available on 3D printed retainers
Methods: Three reference models were used to fabricate traditional vacuum formed, commercially-available vacuum formed, and 3D printed retainers. For each model, three retainers were made using the three methods (a total of 27 retainers). To determine the trueness, the distances between the intaglio surface of the retainers and the occlusal surface of the reference models were measured using an engineering software. A small difference was indicative of a good fit.
Results: Average differences of the traditional vacuum formed retainers ranged from 0.10 to 0.20mm. The commercially-available and 3D printed retainers had a range of 0.10 to 0.30mm and 0.10 to 0.40mm, respectively.
Conclusions: The traditional vacuum formed retainers showed the least amount of deviation from the original reference models while the 3D printed retainers showed the greatest deviation
Time-dependent seismic hazard in mining.
A project report submitted to the Faculty of Mining Engineering,
University of the Witwatersrand, Johannesburg, in partial fulfilment of
the requirements for the degree of Master of Science in Engineering.A strategy to determine the probability that a mining induced seismic event will
occur with magnitude which exceeds some specified value within a given time is
investigated.
The model allows for a non-linear frequency-magnitude relationship and a
Poissonian distribution of seismic events in time. The procedure is also
independent of the method of mining and of the mining geometry.
The model was applied to clusters of various sizes) starting from small areas on a
single reef and ending up with the entire mine as a single entity.
It was shown that the model works well with large populations of events, but to be
successful with small clusters, the retention of the Poisson distribution is too
restrictive and a non-stationary model of seismicevent occurrence in time will have
to be developed.AC 201
An exploratory study to improving project success through contractor-project manager planning in South Africa: a collaborative approach
Research Report submitted to
The Faculty of Engineering and the Built Environment
University of Witwatersrand
In partial fulfilment of the requirements for the degree of
Masters of Science
April 2015One of the causes of projects failing to meet their budget and schedule expectations is poor contractor
performance. Small-medium sized contractors in the South African construction industry are faced
with challenges such as poor management of cash flows, poor access to credit, not having enough
capital to drive the project from their own coffers, challenges in obtaining finance, poor planning,
challenges with getting competent staff, poor administrative capabilities, lack of experience and poor
education, lack of management skills in general and the influence of the client such as imposing
unrealistic deadlines. The competencies of the construction project manager are imperative to
achieving project success in terms of meeting budget and time expectations. The specific competency
of the construction project manager for handling small-medium sized contractors in South Africa are
critical analysis, judgement, resource management, engaging communication and motivation.
This study explores the need for a collaborative planning framework between small medium sized
contractors and the construction project manager in South Africa, to address poor technical and
managerial skills of small-medium sized contractor
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