Advance Search

1962 Results

Refine by:

Years

2015(361)
2012(23)
2014(484)
2013(84)
2018(217)
2016(301)
2019(265)
2017(215)
0000(12)
Show More >> Show Less >>

Article type

Research Article(1951)
Special Issue(8)
Research Report (1)
Book Review(1)
Editorial Note(1)
Show More >> Show Less >>

Publication title

International Journal of Management and Sustainability(149)
International Journal of Geography and Geology(102)
International Journal of Mathematical Research(49)
International Journal of Sustainable Development & World Policy(47)
The International Journal of Biotechnology(70)
International Journal of Sustainable Energy and Environmental Research(52)
International Journal of Education and Practice(159)
International Journal of Chemistry and Materials Research(49)
Review of Information Engineering and Applications(22)
International Journal of Natural Sciences Research(73)
Humanities and Social Sciences Letters(89)
International Journal of Chemical and Process Engineering Research(27)
Journal of Empirical Studies(24)
The Economics and Finance Letters(46)
International Journal of Medical and Health Sciences Research(68)
International Journal of Business, Economics and Management(114)
Journal of Food Technology Research(44)
Journal of Social Economics Research(52)
International Journal of Sustainable Agricultural Research(74)
The Asia Journal of Applied Microbiology(22)
International Journal of Advances in Life Science and Technology(11)
Review of Industrial Engineering Letters(19)
Review of Environment and Earth Sciences(27)
Current Research in Agricultural Sciences(68)
International Journal of Public Policy and Administration Research(34)
Journal of Tourism Management Research(38)
Review of Knowledge Economy(21)
Review of Energy Technologies and Policy Research(17)
Review of Computer Engineering Research(39)
Review of Advances in Physics Theories and Applications(7)
Journal of Minerals and Materials Research(2)
Asian Journal of Energy Transformation and Conservation(10)
International Research Journal of Insect Sciences(8)
Cancers Review(11)
Journal of Building Construction, Planning and Materials Research(3)
Animal Review(41)
Journal of New Media and Mass Communication(13)
Journal of Future Internet(6)
Journal of Forests(17)
Journal of Nutrients(10)
Journal of Sports Research(41)
Journal of Diagnostics(22)
Review of Catalysts(4)
Journal of Diseases(27)
Review of Plant Studies(11)
Journal of Challenges(6)
Journal of Brain Sciences(5)
Financial Risk and Management Reviews(17)
Games Review(8)
International Journal of Veterinary Sciences Research(19)
Journal of Information(16)
Journal of Cells(6)
Quarterly Journal of Econometrics Research(12)
Genes Review(7)
Journal of Atmosphere(6)
World Journal of Molecular Research(2)
International Journal of Hydrology Research(4)
International Journal of Climate Research(7)
International Journal of Business Strategy and Social Sciences(1)
World Journal of Vocational Education and Training(7)
Show More >> Show Less >>
Listing 64 - 20 of 1962 results.

The Importance Performance Analysis of Taiwan Tourism Mobile Marketing

Research Article
Author(s): Peggy Chang
Journal: Journal of Tourism Management Research

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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): R Ncwadi, Kholiswa Malindini
Journal: Quarterly Journal of Econometrics Research

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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): Richard J. Cebula
Journal: Quarterly Journal of Econometrics Research

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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): Jaganath Behera
Journal: Quarterly Journal of Econometrics Research

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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

Research Article
Author(s): Tofig Kazimov, Shafagat Mahmudova
Journal: Review of Computer Engineering Research

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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


Computer Sciences » Review of Computer Engineering Research » Month: 10-2016 Issue: 3

A Comprehensive Review of Semiconductor-Type Gas Sensors for Environmental Monitoring

Research Article
Author(s): Anand Nayyar, Vikram Puri, Dac-Nhuong Le
Journal: Review of Computer Engineering Research

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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


Computer Sciences » Review of Computer Engineering Research » Month: 10-2016 Issue: 3

Analysis of Suitable Security Protocols for Apply a Model of Identity in the Civil Registry of Ecuador

Research Article
Author(s): Moises Toapanta, Enrique Mafla, Jose Orizaga
Journal: Review of Computer Engineering Research

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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

Research Article
Author(s): Shoewu, O, Salau, N.O, Ogunlewe, A.O, Oborkhale, L.I
Journal: Review of Computer Engineering Research

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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

Research Article
Author(s): Iftikhar B. Abbasov, V iacheslav V. Orekhov
Journal: Review of Computer Engineering Research

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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

Research Article
Author(s):
Journal: Review of Environment and Earth Sciences

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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)

Research Article
Author(s): Mohammad Ali Rahimipour Sheykhani Nejad, Farzaneh Nasiri Jan Agha , Farzaneh Nasiri Jan Agha, Sayedeh Sakineh Khatami, Yalda Fattahzadeh
Journal: Review of Environment and Earth Sciences

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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

Research Article
Author(s): Henry Y. Madukwe
Journal: Review of Environment and Earth Sciences

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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

Research Article
Author(s): Zuzana Murcinkova, Jaromir Murcinko, Pavel Adamcik
Journal: Review of Industrial Engineering Letters

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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

Research Article
Author(s): Salim Bennoud, Mourad Zergoug
Journal: Review of Industrial Engineering Letters

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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): Shoewu, O, Anuforonini, G, Duduyemi, O
Journal: Review of Information Engineering and Applications

Export to    BibTeX   |   EndNote   |   RIS

Abstract
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

First Report of Legionella Pneumophila Serogroup 1 Isolate from Public-Supply Water in Bangladesh

Research Article
Author(s): Anwarul Haque, Ayumi Yoshizumi, Tomoo Saga, Akira Ohno, Yoshikazu Ishii, Kazuhiro Tateda
Journal: The Asia Journal of Applied Microbiology

Export to    BibTeX   |   EndNote   |   RIS

Abstract
Legionella pneumophila infection is generally recognized to be transmitted from aquatic sources to human. In Bangladesh, although suspected cases of legionellosis were reported, epidemiology of Legionella infection as well as water resource contamination by Legionella spp. was almost unknown. In the current study, we screened water samples from Dhaka, Bangladesh, for Legionella spp. One L. pneumophila isolate was recovered from tap water of a residential hotel. This isolate was identified as serogroup 1 by serum agglutination reaction, and sequence type 1 (ST1) by sequence based typing. Analysis of lipopolysaccharide synthesis cluster genes by PCR revealed lag-1 gene was not detected in this isolate, and its predicted monoclonal antibody subgroup was OLDA/Oxford. This is the first report of isolation and characterization of L. pneumophila from aquatic environment in Bangladesh.
Contribution/ Originality
This study documents, as first, the existence of Legionella spp. in water in Bangladesh that contributes to understanding possible sources of contamination of aquatic environment by rapid urbanization in this territory. The objective of the study is to guide to develop an effective infection control policy in this country.
Biological Sciences » The Asia Journal of Applied Microbiology » Month: 06-2016 Issue: 2

Prevalence of Hepatitis C Virus Infection among People Attending A Voluntary Screening Centre in Masaka, Nasarawa State, Nigeria

Research Article
Author(s): Pennap, GRI, Nuhu II, Oti, VB
Journal: The Asia Journal of Applied Microbiology

Export to    BibTeX   |   EndNote   |   RIS

Abstract
Hepatitis C virus (HCV) is an emerging public health problem in Nigeria. This study therefore determined the seroprevalence of this virus among people of a rural settlement in Nigeria during which 600 people were screened for HCV infection. Five ml of blood was collected from each participant, the serum harvested and screened for anti- HCV using a Chromatographic rapid test kit (ACON Inc. USA) according to the manufacturer’s instructions .The overall prevalence of HCV infection in this population was 24.2% being higher among males (23.7%) than females (23.7%) (p? 0.05). Only Educational level had a significant association with infection (p < 0.05). When stratified by age infection was highest among those aged 21 -30 years (27.4%) and least among those aged 51 years and above (3.6%) (p? 0.05). Occupation and marital status also had no statistically significant relationship with viral infection. The 24.2% infection rate reported  in this population is a cause for alarm because it means there is a high viral reservoir in the area. There is also a high number of persons likely to have end- stage liver diseases among these participants. The absence of identifiable risk factors is a major challenge to prevention and control and demonstrates the need for reevaluation of transmission routes in the locality. Screening should be available and affordable.
Contribution/ Originality
This study has contributed in documenting the prevalence of the infectin in Masaka, Nigeria using chromatographic rapid test kit and has used the Chi square statistical test. The study is one of the very few studies which have investigated the prevalence of HCV infection in North Central, Nigeria. This paper has contributed in logical analysis and in estimating the prevalence and risk factors of the infection in Masaka. The study documented a relatively high overall prevalence of the infection. It is associated with educational level and not associated with age, gender, occupation and marital status.
Biological Sciences » The Asia Journal of Applied Microbiology » Month: 09-2016 Issue: 3

Prevalence of Hepatitis B and C Viruses among Human Immunodeficiency Virus Infected Children Attending an Antiretroviral Therapy Clinic in Lafia, Nigeria

Research Article
Author(s): Pennap GR, Yahuza AJ, Abdulkarim ML, Oti VB
Journal: The Asia Journal of Applied Microbiology

Export to    BibTeX   |   EndNote   |   RIS

Abstract
Nigeria has the largest burden of children living with HIV in the world but because of antiretroviral therapy, they are living longer. However, hepatitis B and C viruses are emerging important co-morbidities to consider especially for management decisions. This study set out to determine the prevalence of hepatitis B and C viruses among these children and to identify possible risk factors associated with the infections. Two hundred HIV-infected children at an antiretroviral treatment center were screened for Hepatitis B and C seromarkers using rapid test kits (ABCON Laboratories Hangzhou China). Informed written consent was obtained from their parents/guardian and information on their sociodemographics and exposure to some possible risk factors were obtained. A general prevalence of infection with hepatitis B and C virus in the study population was 14.0%. The prevalence of HBV was 3.0% while HCV was 11.0% and no child was coinfected with all 3 viruses. The HIV/HBV and HIV/HCV coinfection prevalence of 3.0% and 11.0% respectively is a cause for alarm. It is therefore pertinent that HIV infected children are screened for these viruses before commencement and during antiretroviral therapy.
Contribution/ Originality
This study has contributed in documenting the prevalence of the coinfections in Lafia, Nigeria using rapid test kits and has used the Chi square statistical test. This study is one of the very few studies which have investigated the prevalence of Hepatitis B and C infections in North Central, Nigeria. The paper has contributed in logical analysis and in estimating the prevalence and risk factors of the infections in Lafia. The study documented a relatively high overall prevalence of the coinfection. There is a coinfection of the 3 viruses among the study population.
Biological Sciences » The Asia Journal of Applied Microbiology » Month: 12-2016 Issue: 4

Does the Holiday Effect Differ from Religious to Non-Religious Holidays? Empirical Evidence from Egypt

Research Article
Author(s): Zeina Al-Ahmad, Suzan Al-Ali
Journal: The Economics and Finance Letters

Export to    BibTeX   |   EndNote   |   RIS

Abstract
This study aims to investigate the presence of holiday effect on the Egyptian Exchange (EGX) over the period 2010 to 2015. It utilizes daily data of the EGX30 index prices and trading volumes and applies dummy variables OLS regression. Three types of holidays are examined those being, secular, Islamic, and Christian, and those, in turn, are disaggregated into their individual components. The findings reveal that there are differences in the behavior of stock prices between holidays. While the secular and Islamic holidays are mainly associated with positive pre-holiday returns, the Christian holidays are associated with positive post-holiday returns. Disaggregating these holidays into their individual components reveals that the Police Day holiday, Eid Al-Fitr holiday and Eastern Christmas holiday are the major holidays driving the secular, Islamic and Christian holidays’ effect respectively. Interestingly, the results obtained when the trading volume is used do not support the presence of a holiday effect on trading volume. The findings could have important implications for developing profitable investment strategies in periods of holidays.
Contribution/ Originality
This study contributes to the literature in that it examines the holiday effect using disaggregated data of secular, Islamic, and Christian holidays with the aim of examining whether the holiday effect differs between religious and non-religious holidays and between Islamic and Christian ones.
Economics » The Economics and Finance Letters » Month: 03-2016 Issue: 3

The Relationship between Currency Conversions and International Business Transactions: Small Businesses and Travelers

Research Article
Author(s): Ngozi Oriaku, Ebere Oriaku
Journal: The Economics and Finance Letters

Export to    BibTeX   |   EndNote   |   RIS

Abstract
This research looks at currency conversions and how it affects international business transactions especially small businesses and travelers. The idea is to show the discrepancy of currency conversion and the factors that do affect currency conversion in any given time for a business person or a traveler.  In order to increase small business and traveler’s awareness when it comes to doing business abroad, it is imperative to understand the currency conversions, its implications, and the commitments needed to protect investments and value of the conversion exchange. Research shows that small businesses have little or no adequate knowledge of currency conversions. The paper research questions are: (1) Do foreign exchange rates uncertainty reduce the incentive of travelers and small business owners from transacting business abroad? (2) Is it necessary for travelers and small business owners to understand the relevance of foreign exchange rates and risks management?
Contribution/ Originality
This study documents a rule of thumb that the main objective of businesses is to maximize profits and minimize costs. It illustrates that the knowledge of currency conversions is very vital to all small business practitioners.
Economics » The Economics and Finance Letters » Month: 04-2016 Issue: 4