American Journal of Engineering and Technology Management

Volume 2, Issue 6, December 2017

  • Optimal Scheduling for a Service Technician Workforce with Time-varying Work Volume and Technician Availability

    Dennis Charles Dietz

    Issue: Volume 2, Issue 6, December 2017
    Pages: 77-82
    Received: 30 May 2017
    Accepted: 5 July 2017
    Published: 7 November 2017
    Abstract: A practical scheduling method is developed and implemented to determine the optimal allocation of technicians to candidate tour types and start times in a field service environment. Historical data is aggregated to determine a weekly work volume distribution and technician availability profile. These and other quantitative factors populate a mixed ... Show More
  • On Comparative Analysis of Measure of Indifference of Process Parameters in Minimizing Surface Roughness of Drilling Mild Steel, Stainless Steel and Brass

    Raimi Oluwole Abiodun, Tanimola Babatunde Adedoyin

    Issue: Volume 2, Issue 6, December 2017
    Pages: 83-86
    Received: 8 October 2017
    Accepted: 18 October 2017
    Published: 20 November 2017
    Abstract: The use of optimal parameter values in an experimental investigation for minimizing surface roughness has always been the design trend of many machining operation without checking the variation levels of the process parameters if it has any measure of significant difference or not in minimizing surface roughness of the workpiece. The study carried ... Show More
  • Viscosities of Binary Liquid Mixtures of 1, 2-Dichloroethane with Pyridine, Dimethyl Sulfoxide, Acetone, Furan and Tetrahydrofuran at 303.15 K

    Atri Deo Tripathi, Asim Ahmad

    Issue: Volume 2, Issue 6, December 2017
    Pages: 87-92
    Received: 11 March 2017
    Accepted: 6 April 2017
    Published: 29 November 2017
    Abstract: Kinematic Viscosities, ν at T=303.15K, have been measured for binary liquid mixtures of 1, 2-dichloroethane with pyridine, dimethyl sulfoxide (DMSO), acetone, furan and tetrahydrofuran (THF). The values of ν have been fitted in appropriate equations using a least squares method. The values of the quantity Δν, which refer to the deviations of the ex... Show More
  • Modeling Assessment on Technological Challenges Facing Small-Scale Gold Miners in Tanzania and How Engineering Could Solve Them

    Mtaita Charles Mtoni

    Issue: Volume 2, Issue 6, December 2017
    Pages: 93-97
    Received: 8 February 2017
    Accepted: 24 February 2017
    Published: 11 December 2017
    Abstract: This paper aims on assessing the effects associated to the challenges facing small-scale miners in Tanzania. Small scale mining in Tanzania is characterized by low productivity which is mainly a result of application of rudimentary and inappropriate technology which in turn impact on capacities to generate income. The choice of technology among sma... Show More
  • Grid-Connected Control System for Three-Phase Bidirectional DC/AC Converter to Exploit Photovoltaic Power Generation

    Le Tien Phong, Do Trung Hai

    Issue: Volume 2, Issue 6, December 2017
    Pages: 98-107
    Received: 17 November 2017
    Accepted: 27 November 2017
    Published: 20 December 2017
    Abstract: A grid-connetected control system is proposed in this paper to regulate three-phase bidirectional DC/AC converters in distribution grid exploiting photovoltaic power generation and not having energy storage at the DC side. To interact power flow at two its sides, statbilize voltage at the DCbus and synchronize with the grid, it includes an inner cu... Show More