ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
An Adaptive Beamforming Antenna Array System for Minimizing Outage Probability in Mobile Cellular Networks
Onoh GN, Arinze SN, Okafor PU
Page no 618-625 |
10.21276/sjeat.2018.3.10.2
The Communication industry in Nigeria was thrown into the Quality of
Service challenges as a result of rapid growth of mobile users with their increases in the
demand for mobile communication application services. Most often in this country, the
outages are high which leads to total network failures, block calls, drop calls. All these
are as a result of poor signal strength at the receiving end. This research was aimed at
minimizing outage probability in mobile network using beamforming adaptive antenna
array system. To achieve this goal, the number of outages was measured at a specified
period. A beamforming antenna was designed so as to enhance signal reception. An
LMS algorithm was developed for the antenna for signal tracking and acquisition. A
model for minimizing the outage probability in the network using adaptive beamforming
antenna was then developed and simulated in MATLAB Environment. Results obtained
showed that the outage probability is lower with adaptive beamforming antenna and also
the BER curve was better with beamforming technique.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
Socio-Demographic Correlates of Job Satisfaction and Perceived Factors Influencing Nurses Turnover in Ahmadu Bello University Teaching Hospital Zaria Kaduna State, Nigeria
Robert Teryila Kever, Silas Saidu Oyibo, Aji M. Gana, John Freeman Ukende, Pius Iorapuu Damkor, Sambo Danlami
Page no 321-328 |
10.21276/sjnhc
Workplace turnover is destructive to nursing and patient outcomes as it leads to
losing competent and qualified nurses. However, developments of coping strategies
demand a clear understanding of workplace variables that either motivates nurses to
remain employed or lead them to leave their current jobs. This study assessed the
relationship between socio-demographic characteristics of members of nursing staff and
their job satisfaction as well as perceived factors influencing turnover among nurses in
Ahmadu Bello University Teaching Hospital Zaria, Nigeria. Cross-sectional study design
was carried out on 304 nurses using quantitative data collection methods from 8th April,
2016 – 22nd April, 2016. The respondent’s age ranged between 20-63 years with a mean
age of 39±10.97 years. Age, gender, marital status; and job satisfaction yielded a nonstatistical significant, weak and positive correlation with job satisfaction. Number of years
worked, professional experience and unit of primary assignment were the only sociodemographic characteristics found to be significant predictors of job satisfaction in
ABUTH (P < 0.05). Insufficient cohesion with colleagues, poor safety of the work
environment; undervalued nurse’s opinion by medical staff and poor professional image of
nursing were identified as perceived factors positively influencing nurse’s intension to
leave the hospital. The study suggests that nurses’ opinion should be respected by other
professionals and nurses professional practice judgement should not be relegated on the
bases of sentiments.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
A Conceptual Framework for Sustainable Neighbourhoods in Al Wakra, State Of Qatar
Angelica Marie C. Caccam, Raffaello Furlan
Page no 644-661 |
10.21276/sjeat.2018.3.10.5
In the past two decades, sustainability has been a significant concern when
planning cities. As a consequence of development occurring in cities, its essence to
people is discounted. An example of this is Doha, Qatar‟s capital, which has undergone
massive urban developments because of the post-WWII discovery and production of oil
and gas. Doha‟s urban fabric has been transformed from a rational, people-based, and
environmentally adapted design into zoning and transportation dependent planning.
However, in the past few years, Doha has started to adopt sustainability-driven urban
planning policies. For example, development of the new city Lusail has legislation and
design regulations directed towards sustainable planning. Therefore, this research study
is focused on the urban planning of a neighbourhood in Al Wakra, Qatar. The focus is
on its relationship to the old city layout and the possible implementation of
sustainability principles in present-day development in the area. The study also develops
strategies and design that utilize sustainability principles. The study process includes a
literature review, data collection, detailed site analysis, and exploration of present and
historic plans for Al Wakra. Additionally, various alternatives that follow specific
strategies are generated to identify a desirable approach for the neighbourhood.
Furthermore, the strategies highlight actions needed to implement the development
concept. As a result, the study generates an ideal approach for the further development
of Al Wakra. Furthermore, the findings can act as a reference for similar developments
with a comparable climate, surroundings, environment, size, and population.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
The Impacts of Reservoir Operation Modification Assessment; Case study Jebel Aulia Reservoir in Sudan
Yasir S. A. Ali
Page no 131-146 |
10.36348/sjce
Variation of Jebel Aulia Reservoir levels along White Nile River causes
wider variation of the wetted area. This adds to the challenges for the pumping water
for irrigation. Historically, there was always the tendency to maintain high reservoir
levels in favor of the upstream pumping stations. The aim of this study is to assess
possible impacts of changing the operation rules of Jebel Aulia Reservoir. Water
balance approach has been applied to investigate the existing and three modified
operation policy. The evaluated parameters include duration of high reservoir levels
preferred by pumping schemes, satisfaction of downstream water demands and area
of flood plain agriculture (Guroof), evaporation and hydropower generation. Scenario
2 was found to be the best in obtaining high reservoir level and given the highest
annual hydropower production. Scenario 3 was found to be the best in terms of
evaporation losses and the downstream demands.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
Least Squares Weighted Residual Method for the Elastic Buckling of Euler Column with Fixed-Pinned Ends
Ikwueze EU, Ike CC, Ofondu IO
Page no 110-119 |
10.36348/sjce
The least squares weighted residual method was used in this work to solve
the boundary value problem (BVP) of an Euler column of length l fixed at x = 0, and
pinned at x = l. Polynomial shape (spline) functions for Euler columns with fixedpinned ends were used to obtain one – and two parameter buckling shape functions in
terms of unknown generalised parameters. The one and two parameter buckling shape
functions were used to construct least squares weighted residual integral statements of
the boundary value problem. The least squares weighted residual statements
simplified the boundary value problem (BVP) to algebraic eigenvalue – eigenvector
problems. The solution for non trivial cases yielded characteristic buckling equations
which were solved to obtain the buckling loads. One parameter coordinate shape
function yielded the critical load as Qcr = 21EI/l2, while the two parameter buckling
shape function yielded Qcr = 20.34614EI/l2. One parameter least squares weighted
residual solution yielded a relative error of 4 % while the two parameter least squares
weighted residual solution yielded a relative error of 0.77% compared to the exact
solution.
REVIEW ARTICLE | Oct. 30, 2018
Mobility, Confinement and the Politics of Exile: A Study of Manyani Detention Camp in Kenya, 1952 - 1963: A Historical Account
John Ndungu Kungu
Page no 1184-1192 |
10.21276/sjhss.2018.3.10.6
This paper examines the History of Manyani Detention Camp from 1952 to
1963. From 1952 onwards, the British government established detention camps where
suspected Mau Mau fighters and their sympathizers were incarcerated. Manyani was
started as a holding camp for “hard core” Mau Mau fighters. Manyani held Mau Mau
fighters from 1952 to 1963. The colonial government preferred Manyani detention
camp because of its harsh environment that was expected to exert maximum physical
torture on the detainees so that they could plead guilty and assist in ending the Mau
Mau uprising. The paper shows Manyani detention camps as an institution of political
domination and control during the state Emergency in Kenya. The paper is a
contribution to the historiography of prisons in Kenya.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
A Parametric Study for the Design of Truss Building Subjected To Wind Actions
Ayed Eid Alluqmani, Muhammad Tayyab Naqash
Page no 62-75 |
10.36348/sjce
Kingdom of Saudi Arabia (KSA) is rapidly developing with the
government's vision (Saudi 2030 Vision) of working towards a developed nation by
the year 2030. Government have implemented various types of development such as
schools, government offices, hospitals, factories and, housing schemes, etc. It also
aims to implement green building designs thereby using a recyclable structural
material for construction such as Steel is a positive step. The use of truss design,
construction, erection and installation is very popular due to it conventional
configurations and popularity within the industry for its long spanning and lightness.
Nevertheless, its selection and optimum design still needs proper attention. This paper
addresses a parametric study to analyze and design single-story industrial buildings
located in Madinah City using structural analysis and design software SAP2000®.
Standards of the Saudi Building Codes SBC are used for the design purpose. The
basic data related to wind intensity; dead and live loadings are obtained from
SBC301. The dimensions of the two industrial buildings are (20mx35m and
30mx60m) with single span of 20m and 30m. Two different types of trusses are used
thus gave rise to four cases. The design is carried out for the maximum capacities
(compression, tension and shearing) of structural members to guarantee the structural
safety. The purpose of this study is to understand the design philosophy and to give
useful recommendations for the optimal and safe design of trusses with minimization
of construction cost and time savings of industrial buildings.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
Picard’s Successive Iteration Method for the Elastic Buckling Analysis of Euler Columns with Pinned Ends
Charles Chinwuba Ike, Edwin Uchechukwu Ikwueze, Iheanyichukwu O. Ofondu
Page no 76-88 |
10.36348/sjce
In this work, the Picard’s successive iteration method was used to solve the
elastic buckling problem of Euler columns with pinned ends. The problem was
represented by a second order ordinary differential equation in the deflection function
subject to the boundary conditions at the pinned ends. The boundary value problem
was expressed in integral form, and the Picard’s iteration scheme developed from the
integral form. A suitable buckling shape function was used to obtain an initial
approximation to the deflection, and the Picard’s iteration scheme used to obtain first,
second and third iterations for the modal buckling functions through the use of
corresponding boundary conditions. Corresponding Picard’s approximations for the
first, second and third iterations of the critical buckling load were obtained as
1 2
( ) 9 6 0 / . ,
cr
P E I l ( ) 2 2 9 8361 / .
cr
EI l and ( ) 3 2 9 8657 / . .
cr
EI l The
errors in the first, second and third iterates of the critical buckling load were -2.732%,
-0.339% and -0.040% respectively. The use of the exact buckling shape function in
the Picard’s iteration scheme was found to result in the exact closed form solution for
the critical buckling load.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
Improvement of Torsional Resistance in UHPC Beams by Tension Stiffening Index
Karim FR, Abu Bakar, BH, Kok Keong, Choong, Aziz, OQ
Page no 120-130 |
10.36348/sjce
The tension stiffening index is a critical factor which improved their effect
on the torsional behavior of fibrous reinforced concrete beams which included the
bond strength between the reinforcement and the concrete, and the amount of
reinforcement indexes. Thus, this paper highlights the effect of the tension stiffening
index on the torsional resistance of ultra-high performance fiber reinforced concrete
(UHPFRC) beams under pure torsion. Therefore, four under-reinforced ultra-high
performance fiber reinforced concrete beams were cast and tested under pure torsion
which contains the fixed amount of longitudinal and transverse reinforcements, while
the grade and the rib pattern on the surface of reinforcement have been changed. Test
results verified that the torsional resistance, stiffness of the cracked section and the
twisting angle were improved at the crack and peak loads due to a reduction in the
tension stiffening index. However, the axial strains in transverse and longitudinal
reinforcements.
REVIEW ARTICLE | Oct. 30, 2018
Analysis of Joints Trends in the area between Al-Rawnah and Al-Huriyah, Northwest of Taiz City, Yemen
Bagash F, Janardhana MR, Abdul-Aleam Ahmed A. Al-Qadhi
Page no 147-158 |
10.36348/sjce
This paper presents the results of systematic analysis of joints trends in the
rock masses exposed in the stretch between Al-Rawnah and Al-Huriyah areas,
northwest of Taiz city, Yemen, using Fabric-8 software technique. From the field
investigations and structural relations between the various lithounits, the exposed rock
masses in the study area are classified into four litho-tectonic units viz., from bottom to
the top:1) basement rocks, 2) Amran limestone rocks, 3) Al-Tawillah sandstone rocks
and 4) volcanic rocks. Results of the study indicate that the rock units of the study area
are cut and deformed by NNW-SSE, NE-SW, WNW-ESE, N-S, and E-W trending
joints. NNW-SSE and NE-SW trends are the most predominant trends influencing the
rock units of the study area. The dominant and major NNW-SSE trend correlates to the
direction of the maximum extensional stress associated with the Red Sea rift system,
while the second one (NE-SW) is perturbed regional stress field related to the direction
of the stress generated during the opening of the Gulf of Aden. The basement rocks are
commonly affected by both vertical and conjugate joints. The conjugate joints are
represented by X and Y types, although T and H types were also recognized. Amran
limestone rocks are affected by subvertical joints in addition to asymmetric with
symmetric joints of veins filled by calcite minerals. Orthogonal cross joins, conjugate
joints, polygonal joints and exfoliation joints were documented in Al-Tawillah
sandstone rocks. Columnar jointing, plumose structures, horsetail fractures, kink joints
and exfoliation joints are commonly observed in the volcanic rocks. This study
indicates that the fracture spacing, orientation and thickness of the rock mass and
patterns of fractures are controlled by lithology and structural evolution of the study
area.
REVIEW ARTICLE | Oct. 30, 2018
Doha Metro System in the State of Qatar: The Metamorphosis of Al Sadd District
Maryam AlSuwaidi, Raffaello Furlan
Page no 89-109 |
10.36348/sjce
The State of Qatar has been undergoing radical transformation, coordinated
by the national development planning strategy, to realise the aims of Qatar National
Vision 2030 (QNV-2030). Efforts towards sustainable urban growth and development
have included the establishment of a new transportation system, as well as transitoriented developments (TODs), which significantly enhanced pedestrians‘ access to
amenities and facilities, particularly during major events. This research study aims to
develop alternative design strategies for public transit systems and land use amidst the
larger challenge of urban metamorphosis focused on boosting sustainability by
enhancing liveability. The Al Sadd district was selected as a case study due to (1) its
significance as one of the oldest mixed-use districts in Qatar, with a significant role in
the economic development of Doha; (2) its many layers, which have overlapped; and
(3) its lack of heritage significance. Data, gathered from both primary and secondary
sources, consisted of questionnaires, site visits, walk-through observations, focus
groups and structured interviews. The use of these research methods facilitated the
exploration of the physical forms and sociocultural characteristics of the area,
enhancing understanding of the urban quality, and providing inputs for a strategy to
enhance the urban sustainability and liveability of the district.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
Post Disaster Psychological Issues - Ayurvedic Approach
Tushara Joy, Jithesh M
Page no 35-37 |
10.36348/sijtcm
In the current social scenario, trauma is on the rise, which leads to
physical, mental as well as social consequences. If the coping skill of an individual is
not able to manage the stress, it may lead to an acute stress reaction. If it retains more
than 1 month and satisfies the diagnostic criteria, Post Traumatic Stress Disorder
(PTSD) is the condition. It can be considered as the alteration of the functions of
manas as per Ayurveda due to the resulted irreplaceable loss. The acute stress reaction
needs psychological support and in case of PTSD, Ayurvedic medication along with
selected satwavajaya techniques and yoga therapy tends to produce better results.
Selected sodhana procedures along with internal medications including rasayanas are
useful in this regard. The prime knowledge so as to diagnose a case of PTSD is a must
for a general practitioner as the prevalence is on the rise and immediate intervention
produces better results.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
Concept of Prosecution Law to Eradicate Corruption as an Attempt to Punish Perpetrators of Corruption
Yasmirah Mandasari Saragih, Teguh Prasetyo, Jawade Hafidz
Page no 1193-1199 |
10.21276/sjhss.2018.3.10.7
Indonesia is one of the countries with a large number of corruption cases.
Criminal acts of corruption in Indonesia have been pervasive and have entered into all
walks of life. Its development continues to increase from year to year, in the number of
cases that occur and the amount of state financial losses and regarding the quality of
criminal acts of corruption carried out more systematically that has entered aspects of
community life. Increased uncontrolled corruption will bring impacts that are not only
limited to the life of the national economy but also to the life of the nation and state in
general. This study uses a normative and empirical juridical approach. Normative
research is carried out on the theoretical matters of legal principles relating to law
enforcement in the case of corruption in Indonesia. This research method uses several
approaches to produce a reasonable conclusion. The strategy of prosecuting policies in
certain crimes must pay attention to the nature of the problem. If the nature of the
problem is more on economic or trade issues, it should take precedence over sanctions
for action and/or fines. The formulation of sanctions between Article 2 and Article 3 of
this Law is contrary to the general provisions concerning sanctions regulated in the
Criminal Code. In the Criminal Code determines if an act is carried out because of
position and violates the authority. It is a criminal weight, while in this law in Article 3
which is an act as stipulated in Article 2 but carried out by misusing the authority,
opportunity or means that exists because of the position or position but the threat is
lighter than in Article 2. If the special law makes a particular minimum criminal threat,
then it must be accompanied by rules/guidelines for its application such as comparative
problems between specific minimums and maximal in particular. There should be a
unique pattern that should be followed in other Article formulations. For example in
Article 2 paragraph (1) the comparison is 1: 4 while in Article 3 the comparison is 1:20.
There should be a similar pattern applied in each Article in the formulation of specific
minimum provisions.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
Caregivers’ Experiences and Needs During Participation in Care of their Hospitalised Children at a Tertiary Government Hospital in Blantyre, Malawi-A Preliminary Qualitative Exploratory Study
Lophina S. Phiri, Angella Chimwaza, Patrick G.M.C. Phiri
Page no 312-320 |
10.21276/sjnhc
Parental participation is one of the cornerstones of pediatric practice. Queen
Elizabeth Central Hospital (QECH) is the major referral hospital in Malawi and caregivers
stay with their children in the hospital and participate in the care. However, little was
known about the perception of these caregivers regarding their participation in care of
their hospitalised children. The aim of the study was to explore caregivers’ perceptions
regarding parental participation in the care of their hospitalised child. A descriptive
qualitative study was done using semi structured interview guide to collect data from 20
caregivers in the pediatric department. Thematic analysis was done guided by Collaizzi
method. Seven main themes emerged from the data and these were lack of role negotiation
by health care workers, inadequate role preparation for caregivers, perception of
caregivers on care they provided to their hospitalised children, poor HCWs- caregivers’
communication, benefits of caregivers’ participation in care of hospitalised children, needs
of caregivers participating in care of hospitalised children and overall impression of
caregiver’s participation. The study findings showed that caregivers view their
participation in the care of hospitalised children as appropriate, important and satisfying.
However, gaps exist in the way caregivers participate in the care of their hospitalised
children due to inadequate role negotiation, role preparation for caregivers and inadequate
information for caregivers. The researcher recommends that management should develop
protocols and guidelines for the implementation of parental participation in care of
hospitalised children to promote best practices.
ORIGINAL RESEARCH ARTICLE | Oct. 30, 2018
Effect of Selected Position on Physiological Parameters of Neonates Admitted with Respiratory Problems in Neonatal Intensive Care Unit in a Selected Tertiary Care Hospital
S. Bhaktiswarupa, Nayak Geetarani
Page no 303-306 |
10.21276/sjnhc
Correct body positioning is a major nursing intervention to prevent respiratory
problem and reduce complication. The important causes of neonatal deaths is birth
asphyxia and along with serious infections results in more than 50% of all neonatal
deaths.The study was conducted to assess the effect of positioning on physiological
parameters of neonates admitted with respiratory problem and find out the difference
among positions. The conceptual frame work of the study was based on Stuffle Beams
evaluation model provides a framework for evaluation of an innovative intervention .The
research design adopted was quasi experimental with one group post test design. The
experiment was done by taking 60 neonates admitted for respiratory problem. The level of
significance was found using “Z’’ test & ANOVA.The mean heart rate in prone position is
132.4 15.26 less than mean heart rate in lateral position is 137.8 9.82 and in supine
position is 141.6 9.75. The mean oxygen saturation in prone position is 95.9 2.87 is
higher than the mean oxygen saturation in lateral position is 88.9 2.49 and in supine
position is 91.2 2.54. The mean respiration rate in prone position is 43.8 3.18 is less
than in lateral position 51.4 4.33 and supine position is 52.2 1.9. The mean arterial
pressure in supine position is 49.1 8.27 is same as in prone position is 49.1 8.12 and in
lateral position is 48.56 7.57.The mean of oxygen saturation, respiration rate, heart rate
in prone position is clinically effective. Prone position improves oxygen saturation and
decrease respiratory distress in compared to supine and lateral position in neonates having
respiratory problems.