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2014  (Vol. 5, No. 1)


Development of an Automated Hostel Facility Management System


Kola Ayanlowo, O. Shoewu, Segun O. Olatinwo, Olusegun O. Omitola, Damilola D. Babalola 

Corresponding Author: Kola Ayanlowo

Vol. 5 (1), 01-10

Abstract

There has been an astronomical increase in the number of educational institutions established especially in the last four decades all over the world. This development has brought education to the doorstep of people. Consequently it has increased knowledge and helped produce a population of enlightened citizens who can easily abide by the rules of civilized society and contribute meaningfully to the process of democratic governance. Most of the newly established educational institutions however, are using the old conventional techniques for managing their assets especially hostel facilities. This old techniques with its inherent limitations have impacted negatively on the overall organisational efficiency of this educational systems. In this paper, the development of an automated hostel accommodation management system is proposed. The codes for the automated system were developed using Visual Basic and Microsoft Access was used to develop the underlying database. It also has in-built authentication algorithm for preventing unauthorised access. The developed system overcomes the drawbacks of traditional methods of hostel management; it is more user-friendly, graphical-user-interface oriented, reliable, efficient and secured with access control mechanisms.

Submitted
 Accepted
27 Apr 2014
 02 Jul 2014
 

Investigation and Comparing Between Two Air Propulsion Systems Used In A Multi-Purpose Vehicle Using Computational Fluid Dynamics


Mohammad Hadipour, Ebrahim Goshtasbi Rad

Corresponding Author: M. Hadipour

Vol. 5 (1), 11-23

Abstract

The goal of this article is aerodynamic performance investigation and comparing between two different air propulsion engines that is used in WIG configuration of a multi-purpose vehicle (wing-body in ground effect, boat and low depth submarine) for optimal design. At first, investigations were accomplished without simulation of propulsion engines and in absence of their effects to find the proper wing incidence angle and cruise angle of attack of WIG configuration in out of ground effect zone. Then in 4° angle of attack, which the vehicle had the best aerodynamic performance, suction and blowing ducted fan engines mounted on WIG configuration was investigated to show the efficacy of engine type`s. Suction or blowing engine are defined with respect to engine and wing position (suction engine is located behind of wing and blowing engine mounted in front of wing). Furthermore, fan angle and wing-hydrofoil distance affected on aerodynamic characteristics also were investigated in various wing incidence angles. Results show that fan angle in both suction and blowing ducted fan engines has the most important influence on lift and available trust coefficient. The wing- hydrofoil distance has a little effect on aerodynamic performance. Generally, by increasing the fan angle, blowing engine has higher lift coefficient and lower available trust (power augmentation ram effect) than suction engine, but suction engine has higher available trust with lower lift coefficient. Therefore, the best performance condition of this two air propulsion systems with respect to fan angle and wing-hydrofoil distance were determined in different wing incidence angle and constant bodies' angle of attack. 

Submitted
 Accepted
11 Apr 2014 
 02 Aug 2014
 

Abstract

The aim of the present study was to compute the stress concentration in reinforced composite plate with circular hole with respect to the volume ratio of the component materials in composite. The contour of the circular hole and its dependency on the structure of plates were calculated in order to study the behaviors of macro and micro-stresses. The boundary conditions at a large distance from the hole are pressure, uniformly distributed on the plate. Also this problem is analyzed with the finite element method by package ANSYS. The results demonstrated the macro and micro stress and behavior of the orthotropic plate with a circular hole calculated for two different structures.

Submitted

   Accepted
01 Sep 2014
   18 Nov 2014