Integrated Identity and Access Management System for Tertiary Institutions in Developing Countries

Issuance of disparate identifiers to students, manual method of student identity management and access control and the unavailability of actionable information on pattern of students’ use of schools’ services describe identity and access management in tertiary institutions in developing countries. An Integrated Identity and Access Management System for tertiary institutions is developed in this work. This Tertiary Identity and Access Management System (T-IAMS) is a fingerprint biometric database that centrally manages students’ identity, course registration, library and medical services information.  It shortens student provisioning and de-provisioning processes, provides medical service data mining functionality and offers examination screening module which checks students into examination centres by cross-referencing database enrolment with course registration status. The system was developed following exploratory type of evolutionary software development model. MySql was used in building the database and Visual Basic for developing the graphic user interface of the student record module. The work also reports the results of testing done by 20 testers, on a 5-point scale. Analysis of the test results shows the system’s average acceptability percentage of 100 in ability to prevent duplicate enrolments, 79.165 in effectiveness in student clearance while the format and usefulness of reports generated on the medical service module recorded 73.125 as average acceptability percentage. Also, effectiveness in examination screening averaged 66.785 in performance acceptability. It has been shown that managing student identity centrally eases student provisioning and de-provisioning processes, and tightens access control to school facilities and programmes.http://dx.doi.org/10.4314/njt.v34i4.2

Static-Threshold-Limited on-Demand Guaranteed Service for Asynchronous Traffic in Timely-Token Protocol

In this paper, an improved Timely-Token protocol with enhanced best-effort service for improved capacity allocation to the asynchronous (that is, non real-time) traffic is proposed. Through analytical approach and the use of computer simulations, the improved Timely-Token protocol is compared with the existing Timely-Token protocol. In particular, if AT denotes a threshold value, then, when compared to the existing Timely-Token protocol, the improved protocol will allocate additional average of AT time units to the asynchronous traffic in every cycle

Preliminary Context Analysis of Community Informatics Social Network Web Application

Preliminary context analysis is always part of the feasibility study phase in the development of information system for Community Development (CD) purposes. In this paper, a context model and a preliminary context analysis are presented for Social Network Web Application (SNWA) for CD in the Niger Delta region of Nigeria. The context model helps CD facilitators to visualize how SNWA fits into the wider information system for CD and also shows the essential context factors that must be considered in order to tailor the SNWA for CD purposes. Furthermore, the preliminary context analysis used case study research method to provide answers to pertinent questions concerning the situated context of use for the niche SNWA. In all, the context model and context analysis are useful for setting research agenda for the development and diffusion of niche social network for local CD purposes

Application of Lyapunov's Second Method in the Stability Analysis of Oil/Gas Separation Process

In this paper, Lyapunov's method for determining the stability of non-linear systems under dynamic states is presented. The paper highlights a practical application of the method to investigate the stability of crude oil/natural gas separation process. Mathematical state models for the separation process, used in the application, are developed and presented in the paper. From the results obtained, some guidelines are recommended for a safe and efficient practice of separation of oil + water from oil + water + gas mixture in a crude oil process separator without getting into process instability. The recommended guidelines will be found useful in the oil and gas industry for safe and efficient oil and gas production business