ORIGINAL RESEARCH ARTICLE | Feb. 20, 2018
Weighted Exponential - G Family of Probability Distributions
Nadia H. Al-Noor, Lamyaa K. Hussein
Page no 51-59 |
10.21276/sjeat.2018.3.2.1
Many generalized families of distributions have been proposed and studied
over the last two decades for modeling data in many applied areas. In this paper,
depending on the idea of Bourguignon et al., a new family of weighted exponential
distribution named as weighted exponential family of probability distributions
has been proposed and studied which based on using weighted exponential generator.
In addition, weighted exponential - uniform and weighted exponential -
Kumaraswamy distributions have been provide as two examples for this new family.
ORIGINAL RESEARCH ARTICLE | Feb. 20, 2018
Assess the Scale of Devastation and Preparedness against the Effects of Earthquake by Using Virtual Reality
Abdur Rahman, Hideji Kawakami
Page no 60-72 |
10.21276/sjeat.2018.3.2.2
Visceral experience inside the imagery is a new perception of being
physically present in a non-physical world by using new technology as Oculus Rift.
Virtual simulation at any images and videos for the purpose of taking practical
knowledge without being present in that area which provide preoccupy total
environment. Oculus Rift is a virtual reality headset, which provides 6 degrees of
freedom rotational and positional tracking to give the real test of presence in the
imagery sphere. Imagery analysis by using immersive visualization before and after
the earthquake is a technique to measure the scale of devastation without being
present at any locations. To move inside the Street view, Satellite view and Bird’s
view before and after the earthquake with head mounted display makes the exact
features of the scale of devastation by using same and different geometry in each eye.
By dragging and dropping any objects inside the existing scene and make executive
scene which gives the actual features about this object.
ORIGINAL RESEARCH ARTICLE | Feb. 28, 2018
Tripod Robot Control System Based on Improved Hamiltonian Path Planning Algorithm
Wang Hongmei, Zhao Xueliang, Du Haitao
Page no 73-78 |
10.21276/sjeat.2018.3.2.3
Tripod robot system can replace the manual to complete industrial control
action simple but repetitive work, such as in the industrial production line of the
sorting work. In the actual control, how to quickly and accurately identify the color
and shape of the object, at the same time in the shortest time to place it in the
specified location, is an urgent problem to be solved. Tripod robot control system
based on improved Hamiltonian path planning algorithm , combining the corner
detection and corner filling algorithm can accurately identify the shape of the object;
using the greedy algorithm to realize the local optimal solution, a dynamic
programming algorithm to achieve the global optimal solution, solves the problem of
sorting in the shortest time. Experimental results show that the system can achieve the
sorting of objects accurately and efficiently.
ORIGINAL RESEARCH ARTICLE | Feb. 28, 2018
Study and Improvement the Mechanical Properties of Concrete Containing High Percentage of Internal Sulphate
Zainab Jawad Kadhim, Sahar Abd Ali
Page no 88-93 |
10.21276/sjeat.2018.3.2.5
Sulphate attack is a significant problem which locally affects concrete and
other constructional materials. The aim of this work is to study the effect of internal
sulphate which is present in concrete raw materials. Gypsum was used as a source of
internal sulphate. Specimens were prepared for mechanical tests in formed of
(150mm cubes) for compressive test and (100*100*400 mm prisms) for flexure test
with selective mix proportions of 1:2:4 by weight and water/cement ratio of 0.5 by
weight. Results have shown that the compressive strength of concrete at age of 60
days decreases by 46%, 52%, 65% when added sulphate is in 3%, 5%, and 7% by
weight of sand to concrete mixes, respectively. Also results have shown that when the
percentage of cement content increased by 3% , 5% , 7% in concrete mixes ,which
contain sulphates in 3% , 5% , 7% by weight of sand ,the compressive strength of
concrete at 28 and 60 days has been increased and has the same compressive strength
of concrete without sulphates. Moreover, flexural strength decreased by 10%, 25%
and 38% when added sulphate is in 3% , 5%, 7% by weight of sand to concrete mixes
and at age of 60 days, respectively. This decrement in flexural strength has been
tempered by increasing the cement percentage by (3, 5, 7) % of cement weight to
become equal to the value of standard specimens.
ORIGINAL RESEARCH ARTICLE | Feb. 28, 2018
Energy Shortages and Impact on Overall Equipment Effectiveness in Manufacturing Firms in Nigeria
Hachimenum Nyebuchi Amadi
Page no 79-87 |
10.21276/sjeat.2018.3.2.4
Energy availability is a vital factor for the survival and optimal
performance of industries worldwide. Energy deficit poses a serious threat to the
optimal performance of industrial processes, industrial growth and economic
development of any nation. Nigeria is blessed with abundant natural resources from
which energy could be freely harnessed to meet the nation’s ever spiralling energy
needs. Owing to various reasons some of which are pin-pointed here, however,
Nigeria continues to suffer acute shortage of energy to power the manufacturing
sector therefore hindering her industrial and economic development. The study seeks
to investigate the impact of energy deficit on the overall equipment effectiveness
(OEE) of selected manufacturing firms in Nigeria as well as suggest ways of using
OEE to maximise energy and improve productivity. Data extracted from the sampled
firms were used in the computation of the Availability (A), Performance (P), Product
Quality (Q) and the Overall Equipment Effectiveness (OEE) applicable to each firm.
The findings show that Nigeria must adopt vigorous steps to explore and exploit its
abundant energy resources in other to achieve her dream of becoming an industrial
giant in the nearest future.
ORIGINAL RESEARCH ARTICLE | Feb. 28, 2018
Characterization of the Crystalline Structure of Wheat Bran Burned by Nd: YAG Laser
Muna A. Pn Gawbah, Ali A. S. Marouf, Yousef A. Alsabah, Mohammed U. Orsod, Abdelrahman A. Elbadawi
Page no 94-96 |
10.21276/sjeat.2018.3.2.6
This paper reports obtaining of useful and highly value materials from
wheat bran. For this purpose, wheat bran sample was burned for 30 s using Nd: YAG
laser with output power 60 W. The product of synthesis process and non-burned
wheat bran were characterized by x-ray diffractometer (XRD), energy dispersive xray (EDX) and fourier transform infrared (FTIR) so as to investigate its crystal
structure and chemical components. XRD results of the sample before burning
process revealed amorphous silica, cubic phase of silicon carbide and rhombohedral
phase of carbon. The obtained results showed that burning process using Nd: YAG
laser can convert the cubic structure of silicon carbide into hexagonal and
rhombohedral structure and convert rhombohedral structure of carbon into hexagonal
structure; also it revealed a monoclinic structure of silica after burning. FTIR showed
a number of absorbance peaks assigned to silica and silicon carbide.
ORIGINAL RESEARCH ARTICLE | Feb. 28, 2018
Application of Soft Systems Methodology for Computer Module Evaluation for Teaching Computer Technology in Girl’s Secondary Schools in Al Qassim Saudi Arabia
Jasmine Al-Jarallah
Page no 97-118 |
10.21276/sjeat.2018.3.2.7
Presently computer technology is becoming an important education tool
especially in girl‟s schools about the use of computer technology. Therefore, the main
objectives of this study was to introduce different types of computer and information
technology knowledge related to student‟s life and society requirements. The
population for this study was a group of people involved in the module including both
the teachers and students from two secondary schools in Al- Qassim. Personnel
interview was considered as the best method for the study from the researcher's
perspective. A conceptual model was developed to evaluate the use of Soft Systems
Methodology (SSM) for the improvement of teaching computer technology in girls‟
secondary schools. Questionnaire was designed based on the Likert Scale for the
respondents to sate their level of agreement on the scale of five items [strongly agree,
agree, neutral, disagree and strongly disagree with a scale ranging from 1 (strongly
disagree) to 4 (strongly agree). The implementation of the Soft Systems Methodology
was illustrated by stages, which included the development of a rich picture, root
definitions, conceptual models and comparison with the real world. The application
of SSM achieved some of the study objectives pertaining to computer teaching
technology in girl‟s secondary school encountered by many obstacles. The
achievement of SSM application was presented in the rich picture which seemed
helpful especially in presenting the conflict between the students and the teacher‟s
demands keeping in view the limitations of the program for better understanding of
the situation. The induction of computer teaching technology proved useful in
enhancing the student‟s skill about the benefits of computer tools in learning at
schools. The suggested system was found useful for updating the use of SSM by
applying the computer module in teaching computer technology in girl‟s secondary
schools in Al-Qaseem, Saudi Arabia. Because it is comprehensive and would fully
examine the application of SSM methodology. This study recommended the
application of SSM in schools context but within the context of individuals‟ conflict
situation. Application and use of computer teaching technology is an important
education tool especially in girl‟s schools about the use of computer tools and
software for improving learning skills about different aspects of life. This study
recommended the induction of computer teaching technology for enhancing the
student‟s skill about the benefits of computer tools for learning and understanding
different aspects of life at school levels.