International Journal of Management and Sustainability(181)
International Journal of Geography and Geology(115)
International Journal of Mathematical Research(57)
International Journal of Sustainable Development & World Policy(67)
The International Journal of Biotechnology(88)
International Journal of Sustainable Energy and Environmental Research(72)
International Journal of Education and Practice(283)
International Journal of Chemistry and Materials Research(57)
Review of Information Engineering and Applications(28)
International Journal of Natural Sciences Research(76)
Humanities and Social Sciences Letters(169)
International Journal of Chemical and Process Engineering Research(34)
Journal of Empirical Studies(32)
The Economics and Finance Letters(98)
International Journal of Medical and Health Sciences Research(74)
International Journal of Business, Economics and Management(181)
Journal of Food Technology Research(69)
Journal of Social Economics Research(81)
International Journal of Sustainable Agricultural Research(125)
The Asia Journal of Applied Microbiology(27)
International Journal of Advances in Life Science and Technology(14)
Review of Industrial Engineering Letters(22)
Review of Environment and Earth Sciences(32)
Current Research in Agricultural Sciences(93)
International Journal of Public Policy and Administration Research(52)
Journal of Tourism Management Research(75)
Review of Knowledge Economy(23)
Review of Energy Technologies and Policy Research(17)
Review of Computer Engineering Research(59)
Review of Advances in Physics Theories and Applications(8)
Journal of Minerals and Materials Research(2)
Asian Journal of Energy Transformation and Conservation(15)
International Research Journal of Insect Sciences(12)
Cancers Review(14)
Journal of Building Construction, Planning and Materials Research(3)
Animal Review(46)
Journal of New Media and Mass Communication(16)
Journal of Future Internet(8)
Journal of Forests(39)
Journal of Nutrients(12)
Journal of Sports Research(57)
Journal of Diagnostics(23)
Review of Catalysts(4)
Journal of Diseases(33)
Review of Plant Studies(16)
Journal of Challenges(6)
Journal of Brain Sciences(6)
Financial Risk and Management Reviews(31)
Games Review(8)
International Journal of Veterinary Sciences Research(22)
Journal of Information(17)
Journal of Cells(6)
Quarterly Journal of Econometrics Research(19)
Genes Review(7)
Journal of Atmosphere(8)
World Journal of Molecular Research(3)
International Journal of Hydrology Research(9)
International Journal of Climate Research(17)
International Journal of Business Strategy and Social Sciences(10)
World Journal of Vocational Education and Training(24)
Research in English Language Teaching(3)
Tennis has used many different scoring systems throughout its history.
Researchers have been examining these scoring systems for over forty
years. While several intuitive themes have emerged, no systematic
examination on how different scoring systems affect the stronger
player’s probability of winning over a range of serving strengths has
been done. This research study used simulation to examine the three most
common scoring systems used in the United States and their effect on
match win probability, total points played, and expected length of the
match. Moving from ad to no ad or 10-point scoring can result in a more
than 3.5% and 5% respective decrease in the probability of the stronger
player winning a match. When applied to NCAA Division I team tennis,
moving from ad to no ad can decrease the stronger team’s probability of
winning by over 4%. Changes between scoring systems are more pronounced
at relatively weaker serving strengths. Contribution/ Originality
This study formally quantifies, through a systematic design of
experiment, how different scoring systems affect upset percentage, match
length, and match duration in tennis, thus extending upon earlier work
which touched upon these aspects in a less comprehensive and
quantitative manner. Physical Sciences » Journal of Sports Research » Month: 09-2016 Issue: 3
The Comparison of Communication Skills of Istanbul Gelisim University Physical Education and Sports School Students According to their Departments
The aim of this research was to compare the levels of communication
skills of students from the departments of Recreation, Coaching, Sport
Management and Sport and Exercise Science of the School of Physical
Education and Sports at Istanbul Gelişim University. The Communication
Skills Evaluation Scale was used as data collection tool. Portable IBM
SPSS Statistics v20 software package was also used to analyze the
obtained data. After the data were examined for normal distribution and
homogeneity of variance, it was decided to use the parametric test
method. The descriptive analysis and one-way Anova analysis which was
used to determine the difference between two variances and Tukey’s test
were also used to compare the variables among themselves. At the end of
the study, it was determined that the students from the department of
Recreation Department have a higher level for communication skills than
the students from the other departments. Contribution/ Originality
The disabled customer market has become an increasingly important market
in the hotel industry; however, the literature revealed a gap between
what hotels provide and what needed by people with disability (PwD),
which this study aims to bridge such a gap. The study employed a
questionnaire comprising questions on 57 hotel attributes. The hotel
attributes were divided into three groups: hotel employees, guest room,
and public areas. A total of 200 questionnaires were distributed to a
convenience sample of British PwD customers. Among the questionnaires
returned, 126 were useable, representing a response rate of 63%. The
analysis of variance test was employed to determine the presence of
significant differences between four types of disabilities (i.e.,
hearing, sight, physical, and intellectual) in relation to the
importance and performance of the 57 hotel attributes. Additionally,
importance-performance analysis (IPA) was conducted using SPSS. The
results showed some statistically-significant differences for two hotel
attributes. Specifically, people with physical disabilities attached
more importance to two hotel attributes, i.e., “Automated door openings
should be provided”, and “All corridors should be suitable for
wheelchair users. Contribution/ Originality
This study contributes in the existing literature to investigate the
requirements of British customers with disabilities in Egyptian hotels.
The findings of the current study would be useful and helpful for hotels
in making sure that the required facilities for disabled customers are
covered in their plan. Business & Management » Journal of Tourism Management Research » Month: 12-2016 Issue: 2
In this globalized era, travel and tourism has become an indispensable
economic activity world over. It has the potential to strengthen the
socio-economic foundation of a nation. It has the capability to
disseminate the peace message across the globe. It is well-known for job
creation, foreign exchange earnings, revenue and income generations,
and developing socio-economic infrastructures. Thus, it is critical for
unemployment reduction, poverty alleviation, inequality reduction, and
bringing up balanced regional development. It is instrumental for
achieving inclusive and sustainable growth of a nation like India and
her States. It is with this backdrop, this paper is an attempt to assess
the role of tourism in Odisha, an eastern State of India, as an engine
of long-run economic growth. In recent years, tourism has grown
considerably due to the availability of good infrastructure facilities,
favorable government policies, improvement of existing tourist
locations, development of new tourist destinations and strong growth of
hotel and restaurant industry in the State. This is reflected in the
growing number of both domestic and foreign tourists to the State. In a
multivariate framework, the use of multiple regression model over the
period spanning from 1990-91 to 2011-12 provides the evidence of the
positive contribution of the tourism sector to the economic growth of
Odisha thereby justifying the role of tourism as an engine of long term
growth of the State. Hence, the government of Odisha should formulate
plans and policies such that tourism activities are promoted to lead a
stable and sustainable growth of the State. Contribution/ Originality
This is one of very few studies which have investigated the role of
tourism as an engine of long-run growth by quantifying tourism sector in
terms of domestic tourist arrivals, foreign tourist arrivals and in
terms of tourists’ expenditure. This paper contributes to the literature
the evidence of tourism-led growth in the context of Odisha State of
India. Business & Management » Journal of Tourism Management Research » Month: 12-2016 Issue: 2
QSPM Usage in SWOT Analysis as a Tool for Strategic Management of Caspian Sea Coasts (Case Study: Tourism Development in Caspian Eastern Coast at Gilan Province)
The studied area is located in the eastern coast of Caspian Sea at the
Gilan province in Iran including the sea shores at Rudsar, Langaroud,
Lahijan, and Astane Ashrafiyeh cities. This research aims to study and
analyze the important factors on developing tourism industry in the
selected area. Therefore, the influential capabilities that lead to
growth of potential tourists and tourism in the coasts, and have
positive impacts on the economy and job growth of the area have been
evaluated; the current weak points are discussed as well. This research
employed field operation, observation, interview, survey and opinions of
experts for data collection and analysis of the current situation in
this area. Results show that to improve the tourism industry in the
eastern coast of Caspian sea, the current coast-relevant proposals have
to be integrated with other tourism factors applicable in the sea
coasts; such as linking the sea and mountain, enhancing the cooperation
of local people, increasing the number of secured sites, increasing the
number of lifeguards, providing utility services in the research area,
equipping the infrastructures specially accessibility and
transportation, health and security, education and information. At the
end, strategic suggestion are provided. Contribution/ Originality
This study is one of the few studies of tourism management on the
eastern coast of the Caspian sea using a combination of SWOT and QSPM
that is examined. Business & Management » Journal of Tourism Management Research » Month: 06-2017 Issue: 1
The Importance Performance Analysis of Taiwan Tourism Mobile Marketing
The growing power of the Internet, mobile technology and smart phones
has offered new marketing services in tourism industry. Mobile marketing
services becomes the most important factor in creating of marketing
strategies. This study consider tourism mobile marketing application
types in six major aspects: transportation, accommodation, food, tour,
community and other, combined with Technology Acceptance Model of
usefulness, ease of use and interesting; Analyze of the satisfaction and
importance of users by Importance Performance Analysis (IPA). The
results showed: user perception of each application in tourism mobile
marketing, important susceptibility is higher than satisfaction; ease of
use is the most important; real time and correct information are
important, but not in good satisfactory, should be in the most need to
improve. Contribution/ Originality
This study contributes in the existing literature to examine tourism
mobile marketing application types in Taiwan, consider those application
types in six major aspects, analyze the satisfaction and importance of
users by Importance Performance Analysis (IPA). Business & Management » Journal of Tourism Management Research » Month: 06-2017 Issue: 1
Examining Long Run Relationship between Household Debt and Household Savings in South Africa – An Error Correction Model and Granger Causality
Research Article
Author(s):
Journal: Quarterly Journal of Econometrics Research
Savings is vital to maintain and expand an economy’s capital structure
and economic growth. Saving is an important component of economic growth
model in that investments are created from savings. Investment allows
an opportunity to improve technology and thereby increasing levels of
productivity. Increasing levels of productivity lead to increased real
wages. The end result of increasing real wage is improvement of the
welfare of the nation. Nevertheless, savings have been declining over
the years, placing the South African economic development agenda in
jeopardy. Since 1984, savings have deteriorated significantly, reaching a
mere 15.3 percent of GDP in 2009 (SARB, 2010). The decline in savings
at the beginning of the 1980s coincided with increased access to credit
by households. Alongside these developments net wealth of the households
increased relative to their disposable income (South African Reserve
Bank (SARB), 2002). Mutyaba (2013) states that savings declined
considerably during the last decade in South Africa. In 2006, for
example, savings turned negative. In contrast, during the same year the
debt increased to its highest level ever Mutyaba (2013). Clearly
voluntary savings are becoming even more unaffordable by a number of
households in South Africa, mainly amongst the low earners (Chiroro,
2010).This study uses Engle & Granger cointegration approach and
granger causality to examine the link between debt and savings in South
Africa. Contribution/ Originality
This paper makes a contribution towards the household savings discourse
in South Africa. The use of Engle and Granger cointegration approach to
examine the link between household savings and household debt in this
paper is one of the very few studies in this area in South Africa. Economics » Quarterly Journal of Econometrics Research » Month: 06-2016 Issue: 1
Panel Data Analysis of the Impact of Economic Freedom as Well as Economic Conditions, The Quality of Life, and Public Education Spending on U.S. Undocumented Immigrant Settlement Patterns
Research Article
Author(s):
Journal: Quarterly Journal of Econometrics Research
This study seeks to identify key factors influencing the geographic
settlement pattern of undocumented immigrants in the U.S., with a
particular emphasis on the impact of economic freedom, and to extend the
OLS findings in previous related studies. Indeed, this study adds to
the literature in several ways. First, it provides current insights into
the link between the settlement patterns of undocumented immigrants in
the U.S. and economic freedom. Second, the study adopts a panel data-set
and provides estimates using cross-section fixed-effects. Third, this
study also endeavors to provide further insights into the impacts on the
settlement patterns of undocumented immigrants of non-economic-freedom
economic conditions, as well as the quality of life and spending on
primary and secondary public education. The various state fixed-effects
estimates provided in the present study yield several conclusions. In
particular, according to these estimations, the settlement pattern of
undocumented immigrants in the U.S is inversely a function of colder
climates, higher crime rates, higher population density, and a higher
cost of living. In addition, the interstate distribution of undocumented
immigrants to the U.S. is positively a function of the annual per pupil
outlays on public primary and secondary education; it is also
positively a function of the degree of economic freedom, the principal
focus of this study. Contribution/ Originality
This study contributes to the literature by providing contemporary
insights into the factors influencing settlement patterns of
undocumented immigrants in the U.S. using panel data. It is also one of
the few studies to examine the influences of economic freedom and
primary and secondary public school outlays. Economics » Quarterly Journal of Econometrics Research » Month: 12-2016 Issue: 2
Dynamics of Inflation, Economic Growth, Money Supply and Exchange Rate in India: Evidence from Multivariate Analysis
Research Article
Author(s):
Journal: Quarterly Journal of Econometrics Research
The present study investigates the dynamics of inflation, GDP and
exchange rate and money supply in India for the period 1975-2012. The
data source is cumulated from the Reserve Bank of India (RBI) Handbook
of Statistics 2012. The empirical findings of the study show that there
is a long-run equilibrium relationship exist among the variables. The
result also suggest that money supply has a positive effect on GDP
growth in India. The result of error correction indicates that correct
and negative sign for Gross Domestic Product and exchange rate. The
behavior of GDP implies there is no problem of adjustment in the long
run in case of shocks in the short run. The VECM Granger causality
confirms that unidirectional causality from GDP to inflation and
exchange rate to inflation. The result also found that exchange rate
Granger causes both GDP and money supply at 10 percent level of
significance. The impulse response result shows that GDP has a positive
response to money supply from the occurrence to the end of the period.
Whereas the response of exchange rate to money supply negative in the
whole lag period. The variance decomposition result explainss that no
significant part of variance is caused by money supply. The result also
reveals that cyclical variance of GDP caused by money supply, exchange
rate, and inflation. Contribution/ Originality
This study is one of very few studies which has investigated the growth
inflation relationship in the context of India in a new approach using
VAR model. Economics » Quarterly Journal of Econometrics Research » Month: 12-2016 Issue: 2
About the Calculation Method of the Coefficient that Shows Significance Extent of Geometric Characteristics in Determination of Racial and Ethnic Identity of Human
In the article, a new algorithm for finding coefficients that determine
significance extent of the values of geometric characteristics that are
used for determination of racial and ethnic identity of human is
proposed. It is explained that the calculation of coefficients which
determine the importance extent of the values of geometric
characteristics is important in several respects. The determination of
coefficients that indicate the importance extent of geometric
characteristics causes reduction in numbers of values of geometric
characteristics that don’t have particular importance and in time that
is spent for the identification and improvement of identification
quality. Contribution/ Originality
In this paper a review of different semiconductor-type gas sensors is
presented. The different types of gas sensors from various companies
like Hanwei, Libelium, Sandbox Electronics and Sensor Tech SGX are
discussed along with their technical specifications. Environment is
surrounded by various sorts of gases cum pollutants and it is utmost
necessary to keep a efficient check on them as these gases can cause
trouble to the health of human beings and pollute environment
drastically. The main objective of this research paper is to present all
sorts of gas sensors which are based on semiconductors and to generate
awareness regarding which sensor is best for which detection. However,
for more improved sensitivity and selectivity for these sensors, future
trends and outlook for researchers is also suggested. The paper can also
act as base for researchers to get hold of these sensors to develop a
market ready product like drone or robot for Environmental Gas
Detection. Contribution/ Originality
Different security protocols were analyzed are used for a centralized
database with distributed architecture. The goal is identify adequate
security protocols to mitigate the security of information through
identity of a model without relying on technological infrastructures. In
this phase the suitable security protocols for a model of identity
authentication, authorization and auditing (AAA) was analyzed. Deductive
method is used in exploratory research to analyze security protocols
more used among the main mentioned: Feret, Kerberos, Radius, Dnssec,
Ipsec, Pgp, Secure Rpc, Set, Ssl, Tls, Maille, Eap, Pap, Map, Diameter,
Peap, among others. It turned out that security protocols should be
adopted on a model of identity for a centralized data base. It was
concluded that protocols and security algorithms must have a direct
relation to the identity model; allowing mitigate the vulnerabilities
and risks considering To mitigate the threats and risks of information
with confidentiality, integrity and availability. The technological
infrastructure should not influence the implementation of different
security protocols. Contribution/ Originality
This paper provides the first analysis to adopt appropriate security
protocols for an identity model with authentication, authorization and
auditing without relying on specific technological infrastructure for
Ecuador's civil registry; in a distributed architecture database.
Different civil registries of the world with similar characteristics can
refer this research project. Computer Sciences » Review of Computer Engineering Research » Month: 12-2016 Issue: 4
Path Loss Measurement and Modeling for Lagos State G.S.M Environments
This paper presents path loss measurement and modeling for Lagos state
dense-urban (DU), urban (UR), sub-urban (SU) and non-urban (NU) G.S.M
environments. It was carried out with data collection through drive
testing using TEMS software in the chosen environments Lagos-Island(DU),
Surulere (UR), Lekki-Oniru (SU), Agbede-Ikorodu (NU), over a distance
of 0.5-10Km from Base station (BS) to Mobile station (MS) with
measurement taken at 0.5Km intervals for a period of 52 weeks. Relative
parameters like Rxlev, RSSI, Path loss were measured in all areas of
investigation under 2G and 3G frequencies of operation and twelve (12)
different sites location were covered and analysed. COST 231-Hata model
was used as reference model for path loss calculation of field data,
this was further adjusted to develop optimized models (tagged OMODEEN
models) for path loss prediction in all environments of study, which
shows results within 6dB acceptable range, hence recommended for
modeling in these environs and other similar G.S.M environments. Contribution/ Originality
This study is one of very few studies which have investigated path loss
in classified environment. Effort was geared towards four chosen
environment in Lagos metropolitan terrain. A new model known as OMODEEN
was developed and can be used for specific environs. MATLAB was used to
develop graphical representation of the model. Computer Sciences » Review of Computer Engineering Research » Month: 12-2016 Issue: 4
Computational Modeling of Multi-Purpose Amphibious Aircraft Be-103
The paper is dedicated to the aspects of 3D computational modeling of
Be-103 amphibious aircraft. The paper contains initial Figures and
drawings; the computational modeling is performed in 3 ds Max 3D graphic
modeling system. Models of amphibious aircraft structural components
are produced by polygonal extrusion process. Shading is performed at the
sub-objects level as well as assignment of materials. Figures
illustrating realistic rendering of amphibious aircraft 3D-model are
presented as well. Contribution/ Originality
The main contribution of this article is to create a method of designing
from the initial sketch-es to photorealistic model of amphibious
aircraft. Polygonal modeling method has advantages in the designing of
complex engineering objects. For high-quality rendering of the final
model uses an improved calculating method of lighting. Computer Sciences » Review of Computer Engineering Research » Month: 03-2017 Issue: 1
Urban Sprawl Analysis in Jalingo Metropolis, Taraba State Nigeria
This study analyzed spatial and temporal land use /land cover change in
Jalingo Metropolis, Taraba State, north east Nigeria. This was carried
out with the use of land sat images from 1990-2015. Satellite images
were obtained from the United State Geological Survey (USGS) database
online resources. The images were georeferenced and processed.
Supervised image classification technique was employed. Ground truthing
field survey was carried out to complement information about the types
of land use and land-cover classes in the area. The change detection and
change matrixes of the classified satellite images were analyzed using
percentage to see the rate of change in a simple form. Land use maps
were obtained through supervised classifications of satellite imageries
and presented in Tables. The findings of the study show that Jalingo
Metropolis has witnessed unprecedented spatial growth over the years.
The town has grown from 6.01km2 in 1990 to 55.7km2 in 2005 and 101.16 in
2015. This growth was as a result of change in the status of the
metropolis from Local Government headquarters to state capital which
brought about the establishment of government ministries and agencies,
with wide range of opportunities. Despite the existence of master plan,
implementation has not been satisfactory for a number of reasons. This
has resulted in proliferation of haphazard and uncontrolled development
(including slums and squatters), environmental degradation, lack of
basic amenities and transportation problems within and around the town.
The study recommends the need to update the urban database of Jalingo
town using GIS and Remote Sensing techniques to plan and monitor urban
land use changes in the area. Contribution/ Originality
This study is one of very few studies that maps urban sprawl in the
study area. This helps to anticipate the likely danger of urban sprawl
and the rate of urban expansion in the area. Energy & Environmental Sciences » Review of Environment and Earth Sciences » Month: 12-2016 Issue: 2
Zoning of Natural and Man-Made Disasters for Relief and Rescue Centers Site Selection Using the Model Logic (Case Study: Guilan Rural Area)
Guilan Province with vast forest resources and abundant rainfall which
sometimes causes flooding, fires, road accidents and earthquakes,
besides its tourist attraction, high population density and dispersion
of rural areas has faced with the problems that necessitate emergency
response centers against unexpected disaster with a balanced and
equitable access. In order to select stationary and mobile station sites
the potential risks were identified at first and then danger zones were
determined. Nine major risks including floods, earthquakes, mass
movements, fires, road accidents, snow and blizzards, marine incidents,
avalanches and war were paired compared using Analytical Hierarchy
Process (AHP). Then proper sites were determined based on required
standards for establishing relief and rescue centers using the model
LOGIC. Finally, 49 and 34 points were proposed for establishing
stationary and mobile centers, respectively. Also the radius of
effective range for each center was calculated based on a maximum
response time to the incident. Contribution/ Originality
This study is one of very few studies which can be used as a template to
optimal site selection for relief and rescue centers in rural areas of
the Province. Energy & Environmental Sciences » Review of Environment and Earth Sciences » Month: 06-2017 Issue: 1
Granulometric Study of the Lokoja Sandstone, Mid Niger Basin, Nigeria
Grain size studies of the Campanian-Maastrichtian Lokoja Formation have
been investigated. The sand particles exhibit low sphericity which are
angular to sub-angular. Histograms showed unimodal and bimodal trends
and is predominantly asymmetrical with varying modal class, which may be
due to variation in transporting medium energy. The graphic mean ranges
from 0.1ф (coarse grained) to 1.35ф (medium grained) while the is
average 0.81ф (coarse grained). The dominance of coarse grained
particles and dearth of fine sands implies strong to moderate energy
conditions during deposition. The standard deviation ranges from
0.08ф-0.60ф (very well sorted to moderately well sorted); average of
0.40ф (well sorted), which may be due to rapid back and forth movement
of the depositing medium. The skewness ranges between -0.39 and 0.59
(strongly coarse skewed to strongly fine skewed), while the graphic
kurtosis ranges between 0.77 and 2.5 indicating playtykurtic to very
leptokurtic and this variation may be due to some of the deposits being
sorted in high-energy environment elsewhere. A Bivariate plot (simple
skewness vs. standard deviation) shows the samples plotting mainly in
the river sand zone. Another plot of mean size vs. standard deviation
also shows the samples appearing in the river sand zone; other
granulometric parameters that discriminates between river channel
deposits, overbank deposits and overbank-pool deposits shows that the
Lokoja sandstones plotted in the river channel zone. Linear discriminant
analyses signpost a shallow marine beach environment. From the Passega
diagram, majority of the samples plotted outside the featured fields,
only three samples plotted within the diagnostic parameter zone around
the uniform suspension-SR zone. Contribution/ Originality
The study contributes to the existing literature on the sandstone facies
of the Lokoja Formation in the Mid Niger Basin based on granulometric
parameters to establish the depositional environment of the sandstone
and sedimentary process that occurred during deposition. Energy & Environmental Sciences » Review of Environment and Earth Sciences » Month: 06-2017 Issue: 1
The Multi-Parameter on-Line Monitoring System Applied for Rotating Machinery
The paper deals with the designed multi-parameter on-line monitoring
system for rotating machinery based on LonWorks Technology. It analyzes
the basic theoretical assumptions for its design with the usage of
artificial intelligence elements. Moreover, it provides the description
of applications of the new monitoring system to production systems of
the flexoprinting machines and the small hydroelectric power plant. The
effects are in the economy field, i.e. minimization of the production
breakdown due to failures, and in the field of environment protection.
Thus a modern maintenance characterized by minimizing the costly
unscheduled downtime and unexpected breakdowns is presented. Contribution/ Originality
The study presents the usage of the new and developing monitoring system
named Oktalon characterized by on-line regime. The paper's primary
contribution is presentation of the successful approach that allows
preventing the undesirable breakdowns in production using the rotary
motion. The descriptions of system implementations provide system's
advantages and benefits. Engineering » Review of Industrial Engineering Letters » Month: 12-2016 Issue: 2
Evaluation and Quantification of Electromagnetic Field Distribution for Different Configurations of Aeronautical Materials
The electromagnetic field distributions are of great importance in
various engineering applications, especially in aeronautical industry
due to the presence of the communication systems, the embarked radars
and antennas as well as the electric circuits and components on aircraft
that requires to take account of the influence of these devices on
their environment and in particular of their interactions with the
material. This paper shows how electromagnetic field distributes across
different aeronautical materials. This problem is solved using
computational electromagnetic, such as the finite elements method, to
resolve Maxwell’s equations through the problem geometry using an
in-house code developed during this work. Obtained results enable to
calculate the field values in any place of the studied geometry and
determinate the related physical parameters. Results show that
parameters such as material properties, used frequency and sample
dimensions have a strong influence on the field distribution. This
dependence could have important consequences to characterize and
optimize conditions to choose materials used in electromagnetic
applications. For particular cases these results are compared with
open-source codes. The results are very similar with a good precision
which enables to use the developed code to carry out simulations for
other geometries of materials with different proprieties. Contribution/ Originality
The paper's primary contribution is presentation of new and developed
CEM code characterized by capability to calculate and quantify the
electromagnetic fields in various regimes. This study contributes in the
existing literature by increasing the advantages to apply FEM method
analysis to more comprehend electromagnetic problems. Engineering » Review of Industrial Engineering Letters » Month: 12-2016 Issue: 2
Simulation of the Performance of CdTe/CdS/ZnO Multi- Junction Thin Film Solar Cell
Research Article
Author(s):
Journal: Review of Information Engineering and Applications
Multi-junction solar cell layers containing CdTe/CdS/ZnO photovoltaic
cells were created using SCAP 1D software using parameters based on the
previous theoretical characterization to determine the significance
effect on the optimization in terms of efficiency on the solar cell.
The simulation of the models were carried out by varying the band gap
and thickness of the absorber layer and subsequently formulate model
equation using regression analysis to determine the efficiency and fill
factor at any given value. Result shows that increase in the thickness
of absorber layer increases fill factor, current density and open
voltage from 83.74- 84.77, 26.26 -28.85mA/cm2, 0.71- 0.73, 15.51 -17.82%
that ultimately resulted in a high efficiency of solar cell while
increase in band-gap of the absorber layer reduces efficiency of the
solar cell. Model equation gives errors ranges between 0.026 – 0.4 for
thickness and efficiency, 0.0068 – 0.078 for thickness and fill factor
and 0.003 – 0.2 for band gap and efficiency. The study shows that large
thickness of absorber layer and low band gap favor the optimization and
model equations can be used to estimate/forecast the efficiency and fill
factor within the limit of the variable parameters and this offers
better direction for laboratory experiment. Contribution/ Originality
This study contributes in the existing literature that energy is an
uncompromised essential ingredient for socio-economic development and
economic growth. We have created multi-junction solar cell layers
containing CdTe/Cds/ZnO photovoltaic cells using the common SCAP ID
software with varying parameters for characterization. Simulations were
achieved by varying band gap and thickness of the absorber layer and
thereby formulating developing model equations. Model equations were
obtained using regression analysis. Yielded model equations gave minimal
errors that was adequate for the simulations resulting in higher
efficiency. Computer Sciences » Review of Information Engineering and Applications » Month: 06-2016 Issue: 1