Volume 7, Issue 5, June 2016

Analysis of Least Cost Path by Using Geographic Information Systems Network and Multi Criteria Techniques

Ranya Fadlalla. A. Elsheikh and Wael Ali. S. Hassan

Sudan University of Science and Technology (SUST.edu)
Ministry of Physical Planning, Khartoum State, Sudan

Abstract– This paper has illustrated how Geographic Information Systems (GIS), Network and multi criteria Analysis (MCA) can be utilized for determining suitable location of routes for Khartoum city, that involved managing a variety of data sets from different sources and at different scales such as: educational, financial, hospitals, business and governmental institutions as well as places of entertainment, it identified as being extremely significance destination points of service for the path and thus established as parameters. Numerous destination points of service were highlighted and categorized under one of the main groups, each main group given a value and weighted against other groups to establish an order of superiority and inferiority. A path between two points was obtained. The start and destination point were selected randomly without any pre-knowledge of the area.

Keywords— GIS, MCA, Analysis and Information Systems Network

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Design and Fabrication of 3-Axis Computer Numerical Control (CNC) Laser Cutter

Rashid Khalid Hilal Al Habsi and G. R. Rameshkumar

Caledonian College of Engineering, Muscat, Oman

Abstract– Nowadays with a digital control it’s became more and more useful to use such a machine tools with simple a coded software. This paper will present the design and fabrication of Laser Powered 3-axis computer numerically-controlled (CNC) machine which comprise the use of a graphical-user interface (GUI) and Arduino micro controller to produce pulse-width modulation (PWM) outputs in order to run the stepper motors that will be used in this work. A simple mini 3-axis CNC is previously used precisely surfaced designed for snapping of wood, plastic sheet and thin sheet of metal alloy by using a rotating drill bit which its accuracy is much lesser than using a lesser cutter techniques this machine tool is portable and it’s controlled by computer (PC). Design and Fabrication of mini CNC with workspace of 130mm x 130mm using a precision Stepper motors that combined with belt & pulleys help in moving the axis smoothly on linearity bearings that increases a more precisely results obtained.

Keywords— Mini CNC, 3-Axix, Laser and Arduino

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Control Coverage of a Cell in Li-Fi

Farzand Ali, Muhammad Riaz, Muhamamd Umer and Muhammad Yaqoob Wani

School of Information Technology, University of Lahore, Islamabad Campus, Islamabad, 44000, Pakistan

Abstract– So many authors discussed that LIFI is much secured than WIFI. But is it really secured enough?can anybody access hotspot of LIFI? Or it is needed to develop a technique that is used to block the unauthorized access. This paper will provide controlled coverage of cell that is used to enhance the security of LIFI. Coverage area is shown by cone shape and area of cone can be controlled by many factors that will be discussed in this paper. A mechanical system is also installed on the roof to control the coverage area of a Li-Fi.

Keywords— Li-Fi, LED, VLC, Cell, Coverage Area and Wi-Fi

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Physicochemical Properties and Temperature Variation Characteristics of Ituku Clay Deposit for Industrial Uses

Nwogu N. A, Akpomie K. G, Chikwelu G. N, Akpomie T. M and Etukudoh A. B

Projects Development Institute (PRODA), Emene, Enugu State, Nigeria
Department of Pure & Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
Department of Pure & Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria
Department of Chemistry, Federal University Lafia, Lafia, Nigeria

Abstract– The industrial potential of Ituku clay deposit was investigated by determining its physicochemical properties as well as the firing temperature variation characteristics. The clay was obtained from Ituku in Agwu local government area of Enugu State Nigeria. The oxide analysis of Ituku clay showed silica (53.01%) and alumina (18.71%) as major constituent as well as other metal oxides in smaller amounts. The presence of appreciable amounts of alkali oxides of 2.85, 1.93 and 2.48% for CaO, K2O and Na2O respectively reduced the refractory properties of the clay. High Fe2O3 concentration of 7.03% impacted a reddish colour to Ituku clay after firing. The clay showed high modulus of plasticity of 1.57 which indicated a good workability making it easily moldable into shape. With increase in firing temperature of Ituku clay from 900 to 12000C an increase in linear shrinkage, total shrinkage, bulk density and modulus of rupture was observed while a decrease in the apparent density, water absorption and apparent density was obtained. The clay had refractoriness of up to 12000 but at higher firing temperatures signs of failure were observed. This study showed that Ituku clay could be utilized in the manufacture of ceramics, refractory bricks, tiles and pottery thereby reducing over dependency on import of clay minerals into the country.

Keywords— Ituku Clay, Firing Temperature, Modulus of Rupture, Refractoriness and Industrial Use

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