A CASE FOR CADD IN THE STUDIO: AN APPRAISAL OF UNIVERSITY OF JOS DEPARTMENT OF ARCHITECTURE 

Erekpitan O. Ola-Adisa, Umar A. Audu and Inalegwu I. Ella

Department of Architecture

University of Jos

E-mail: olaefeadisa@gmail.com

ABSTRACT

The students’ use of programs such as AutoCAD in the design of their studio projects before manually drafting their designs for portfolio examination forms a significant part of the design process. This paper examines students’ use of Computer Aided Design and Drafting (CADD) software programs in studios, in the Department of Architecture, University of Jos as case study. This paper also looks at the possibility of using use of CADD for the various aspects of the design process. This is accomplished through informal interviews with postgraduate students who are more inclined to use CADD as part of their conceptual design process and 3-D graphic modelling. This study is able to identify the effects of the use of computers in the design studio and how the teaching of CADD would enhance the methods employed in studio instruction.

A FINITE SUM OF HETEROGENEOUS SELF-SIMILAR CANTOR-LIKE SET 

Mark Laisin, Okoli. O. C and N. Nsiegbe

Department of Mathematics

Anambra State University Uli, Anambra State, Nigeria.

Email: laisinmark@yahoo.com; odicomatics@yahoo.com

ABSTRACT

A finite sum of heterogeneous cantor like set was considered. it was proved that this set is admissible by certain finite family of uniformly contracting self-similar set which is more general than the one considered by P. Mendes and a succinct prove is given under a weaker condition than the one in theorem 2 of P. Mendes.MSC (2010): Primary 28A80, 28A78; Secondary 54C30.

ON THE QUANTUM CONFINEMENT EFFECT OF MISSEN ELECTRON AND ELECTRON CHARGE CARRIERS IN A TYPICAL SYNTHETIC SEMICONDUCTING SYSTEM

Ajayi J. O, Akinrinola O and Olawale E.O.

Department of Pure and Applied Physics, Ladoke Akintola

University of Technology, Ogbomoso, Nigeria.

E-mail: simpleajayi@yahoo.com

ABSTRACT

An investigation on the quantum confinement effect of electron and missen electron, when decoupling has not taken place in a synthetic semiconductor structure of GaAs/AlGaAs has been carried out. We have derived analytical expressions of bound state energies from a careful study of the transcendental equation which reproduce impressively well, the numerical solutions of the corresponding transcendental equation for all confinement sizes and potential barrier without any adjustable parameter. These expressions depend on a unique parameter which contains the barrier height and well width. The investigation reveals that the optical absorption data in conjunction with computed energy level based on non-parabolic effective mass theory yielded the needed information (tunneling, exerted force on the wall just before tunneling, critical layer thickness, misfit dislocations etc) about the quantum confinement effect in the structure. Steeper graphs were obtained due to the large band offset (energy gap difference between the composite materials). Also, confinement energy is inversely proportional to the effective mass whereas, confinement potential depends on the direction of the structure.

GEOMETRIC COGNITIVE GROWTH: AN INFORMATION AND COMMUNICATION TECHNOLOGY (ICT) APPROACH

Omotosho, Gabriel Akinlolu

Department of Natural Science,

Nasarawa State Polytechnic, Lafia

E-mail: jogbodoakinlolu@gmail.com

ABSTRACT

This study investigated the geometric cognitive growth of the Van Hiele levels in a technology-enriched environment, as opposed to that of students in a learning environment without any technological enhancements. In order to investigate this, a quasi-experimental non-equivalent comparison group design was used. Similar course content was used for both the control and experimental groups. The students worked through a series of geometry activities and problems. The difference between the groups was that dynamic geometry software was integrated into the teaching of the experimental group. The Cognitive Development and Achievement Test (CDAT) Van Hiele geometry test was used to determine all the students’ level of geometric thinking before and after the course. The study found that the use of dynamic geometry software enhanced students’ geometric visualisation, analysis and deduction, but not their ability to informally justify their reasoning and to understand the formal aspects of deduction.

Table of Contents

Structural Equation Modelling Analytical Approach: Model Fit, Reliability and Validity

Abdullahi Yusuf Waziri, Mustapha Yakubu & Muhammad Sa’adiya Ilyasu                            1-18

Topography, Dumpsites and Groundwater Studies: An Overview

R.N. Opeh., M.O. Atenaga.                                                                                                       19-24

Graphical Passwords and Methods for Enhanced Password Memorability 

Obasan  Adebola, Abdulazeez & Sikiru,Patrick Owohunwa                                                   25-43

Observation of Cell Phone Energy Radiation Effect

E. W. Likta                                                                                                                               44-53

Determination of the Temperature Balancing in the Atmosphere and Surface

of the Earth By Using Physics Techniques

Hayatu Abba Ibrahim                                                                                                             54-79

DETERMINATION OF THE TEMPERATURE BALANCING IN THE ATMOSPHERE AND SURFACE OF THE EARTH BY USING PHYSICS TECHNIQUES 

Hayatu Abba Ibrahim

Department of Physics

University of Maiduguri, Maiduguri, Borno State, Nigeria .

Email: hayatuabbaibrahim5@gmail.com

ABSTRACT

The need to determine the balancing temperature is very important as any increase will result into climate change. Sun behaves as a blackbody with a temperature peak of 5800k, main source of heat to the Earth is solar energy, which is transmitted from the Sun to the Earth by radiation and is converted to heat at the Earth’s surface. To balance this input of solar radiation, the Earth itself emits radiation to space .Some of this terrestrial radiation is trapped by greenhouse gases and radiated back to the Earth, resulting in the warming of the surface known as the greenhouse effect. Trapping of terrestrial radiation by naturally occurring greenhouse gases is essential for maintaining the Earth’s surface temperature above the freezing point. Once, there is an increase in the equilibrium temperature in the atmosphere and the surface of the Earth, then it results into global warming, climate change, drought, desertification, flooding e.t.c. The equilibrium temperature can be derived using physics techniques.

OBSERVATION OF CELL PHONE ENERGY RADIATION EFFECT

OBSERVATION OF CELL PHONE ENERGY RADIATION EFFECT

E. W. Likta

Department of Physics

University of Maiduguri,   Maiduguri, Borno State, Nigeria.

Email: emmalikta2014@gmail.com

ABSTRACT

The goal of this paper is to show that using cell phone, electromagnetic wave is transferred to the body which causes health problems especially at the place near ear skull region where they are known to affect the neurons. Data capture sheet was used in this field work to collect various data from the five types of phones. Tecno phone has low radiation ranging from 0.2 Hz to 0.02 Hz. So such cell phone is advice to use because of its low radiation.

Keyword: Android phone, Iphone, Java Phone, Black Berry Phone and Smart Phone

GRAPHICAL PASSWORDS AND METHODS FOR ENHANCED PASSWORD MEMORABILITY

Obasan  Adebola, Abdulazeez & Sikiru,Patrick Owohunwa

Department of Computer Science, Kaduna Polytechnic

Departmentof Mathematics and Statistics

College of Science & Technology, Kaduna, Kaduna State, Nigeria.

Email:aolukay@yahoo.com,ysabdul94@yahoo.com,owohunwapatrick@yahoo.com

Abstract

Corporate organizations are depending on Internet-enabled Information Technology to reach their target users is a common practice today. This development has made huge users to employ the same technology to satisfy their diverse needs. Consequently, computer and information security has  become  a critical from  service provider viewpoint  to  achieve  protection, confidentiality, integrity, and ensure  reliable  access  to  information resource when  using  computer systems.  To achieve this, text-based password authentication has  been widely used without  flawlessness because remembering  secure  password chosen   from  mixture of  random  alphanumeric and  non-alphanumeric characters  is  an  everyday  problem  for  all  users because  of  individual memory  limitation. Graphical   password which  works  just  by  clicking  with  a  mouse  or  stylus  could  be  used for  user authentication. In this paper, we highlight needs for study of password, how memory influences passwords, different methods for improving memorability of passwords and memorability to achieve the main objective of the study.  Which is to design a graphical authentication system that uses three autobiographical events background images in draw-grid environment to reduce memory loads of password and to ultimately achieve better memorability and security of passwords. We also highlight  memorability  and  security features of  the proposed scheme.

Key words:  Graphical passwords, Password Space, Authentication, Security, Memory, Memorability

TOPOGRAPHY, DUMPSITES AND GROUNDWATER STUDIES: AN OVERVIEW

    R.N. Opeh., M.O. Atenaga.

       Department of Physics With Electronics,

                                                              Western Delta University, Oghara, Delta State, Nigeria.

           Email: Opehraymond@gmail.com, michaelatenaga@hotmail.co.uk

ABSTRACT

This study pictures a critical analysis on how geophysical imaging technique otherwise called tomography is applied on dump site studies to ascertain the level of contamination of groundwater. Imaging often exposes the movement of leachate from the dumpsite through the subsurface. The direct interaction between the leachate and groundwater brings about contamination of groundwater. The geophysical technique applied in defining the leachate migration is thus analyzed.

Keywords: Dumpsite, Tomography, Imaging, Groundwater, Leachate.

STRUCTURAL EQUATION MODELLING ANALYTICAL APPROACH: MODEL FIT, RELIABILITY AND VALIDITY

¹Abdullahi Yusuf Waziri, ²Mustapha Yakubu & ³Muhammad Sa’adiya Ilyasu

¹Department of Quantity Surveying, Faculty of Environmental Technology, ATBU, Bauchi.

²Department of Quantity Surveying, Faculty of Environmental Technology, ATBU, Bauchi

³Department of Architecture, Faculty of Environmental Technology, ATBU, Bauchi

E-mail: aywaziri@gmail.com, citihills@gmail.com, sandyilyas@gmail.com

ABSTRACT

There are widespread empirical studies that employ structural equation modelling statistical technique for simultaneously testing and estimating causal relationships among multiple independent and dependent factors in social science research. While this methodological technique offers tremendous advantages over the traditional methodologies (multiple regression, factor analysis, ANOVA and MANOVA), it is often seen as complicated and difficult to understand. Thus, this paper intends to resolve some potential uncertainties that researchers seeking to use SEM might face. Consequently, the authors provide the general principles and criteria for determining model fit and assessment of reliability and validity of constructs. This paper serves as a useful guide for inexperienced researchers employing SEM for the first time and also as a reference material for researchers with a better understanding of the methodology.