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Search Results: 1 - 10 of 13046 matches for " Joseph Gerald Nii Tetteh Nyanyofio "
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Determinants of Mobile Banking Adoption in the Ghanaian Banking Industry: A Case of Access Bank Ghana Limited  [PDF]
Agbemabiese George Cudjoe, Patrick Amfo Anim, Joseph Gerald Nii Tetteh Nyanyofio
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.32001
Abstract: The study examined the determinant of mobile banking adoption among bank customers in Ghana, with specific emphasis on Access Bank. In line with literature, the study applies theoretical frameworks which have been developed from existing literatures on innovation and adoption to collect responses from one hundred and fifty (150) sampled customers of Access Bank in order to investigate the determinants of mobile banking adoption in the Ghanaian banking industry. The results from the study revealed that, each factor measured had some level of significant effect on consumer intention to adopt and use mobile banking services provided by Access Bank. Additionally, the study unveiled that, perceived credibility and perceived financial cost were the major setback with regards to customers adoption of mobile banking services provided by Access Bank, and as a result of this, Ghanaians have formed a negative behavioural pattern towards mobile banking. In addition, the findings showed that, perceived credibility and perceived financial cost have a stronger effect on consumer intention to adopt and use mobile banking service than perceived usefulness and perceived ease of use. It was, therefore, recommended that banks in Ghana should create more awareness through personal interaction with customers, develop quality initiatives in order to build customer’s confidence. Equally, banks should also review the cost of their mobile banking service.
Effects of Quarry Activities on some Selected Communities in the Lower Manya Krobo District of the Eastern Region of Ghana  [PDF]
Vincent Kodzo Nartey, Joseph Nii Nanor, Raphael Kweku Klake
Atmospheric and Climate Sciences (ACS) , 2012, DOI: 10.4236/acs.2012.23032
Abstract: Extraction of Limestone is an economically important and widespread activity in Ghana and has existed since historical times. However, in spite of its remarkable contribution towards economic development, some adverse impacts have been noticed, especially where extraction is carried out without proper planning and use of modern technology and scientific methods. We have carried out an assessment on the environmental effects of limestone quarrying on some communities in the Lower Manya Krobo District in the Eastern region of Ghana. Dust emission is one of the major effects of the practice of limestone extraction and as such, dust (PM10) sampling was conducted at the affected communities. Mean dry season results recorded in these communities stand at 125.0 μg/m3 or Bueryonye, 116.0 μg/m3 at Odugblase and 109.3 μg/m3 at Klo-Begoro. Oterkpolu community which served as the control recorded an average of 50.5 μg/m3. Average rainy season values recorded for the communities were 83.3 μg/m3 for Bueryonye, 113.1 μg/m3 at Odugblase and 74.4 μg/m3 at Klo-Begoro. The control community, Oterkpolu, had 43.3 μg/m3. These values are above the EPA, Ghana daily guideline level of 70 μg/m3 over a time-weighted average per 24 hours. Questionnaires administration and health records obtained from the health facilities in the communities revealed notable deteriorations in the health of the people as a result of the quarrying activities in the area. Notable among these is the prevalence of malaria though not related to dust emissions, it results from mosquitoes breeding in the stagnant pools of water found in pits created as a result of the mining activity. Other common health cases recorded were acute respiratory tract infection, ear and eye infections, cough and pneumonia.
Microbiological Profile of Some Ghanaian Herbal Preparations—Safety Issues and Implications for the Health Professions  [PDF]
Joseph A. Ampofo, Anthonia Andoh, Wilhermina Tetteh, Mohammed Bello
Open Journal of Medical Microbiology (OJMM) , 2012, DOI: 10.4236/ojmm.2012.23018
Abstract: Thirty-one herbal preparations produced and sold on the Ghanaian market were randomly purchased from sales outlets and analyzed for their microbiological quality by testing for the presence of total coliform bacteria, faecal coliform bac- teria, and total heterotrophic bacteria count. Also tested for was detection of pathogenic bacteria such as the Salmonella spp. and Clostridium spp. Opportunistic bacterial pathogens (Aeromonas spp., Enterococcus spp. and Pseudomonas spp.) and mould were also tested for. The herbal preparations tested came from different processing companies and in- cluded those labeled as suitable for treating arthritis, asthma, anaemia, diabetes mellitus, epilepsy, cough, hypertension, dysmenorrhoea, malaria, urine retention and loss of appetite. Aliquots of the various herbal products were cultured on various selective media. Eight (8) of the products showed the presence of all microorganism analyzed for including the pathogenic ones and are recommended not be used. Five (5) of the products did not have any microorganism present. Eleven (11) products showed the presence of only total heterotrophic bacteria and the values ranged from 1 to 94 cfu per ml. These two groups of total of sixteen (16) products can be used without any microbiological risk. Another three (3) products showed presence of only total heterotrophic bacteria but the values ranged from 118 to 1648 cfu per ml. Majority of the herbal preparations showed the presence of pathogenic bacteria. These three products may pose danger to the user can be used with caution. None of the herbal products recorded the presence of Enterococcus spp.
The treatment of small cell carcinoma of the ovary hypercalcemic type
Joseph Gerald Pressey
Oncology Reviews , 2011, DOI: 10.4081/1
Abstract: Small cell carcinoma of the ovary hypercalcemic type (SCCOHT) is an exceedingly rare and poorly characterized tumor with an unknown cell of origin. SCCOHT typically occurs in adolescents and young women with a peak incidence in the third decade of life. The initial description of SCCOHT noted a dismal outcome among patients, particularly those with advanced disease. However, recently published studies indicate that SCCOHT is often amenable to therapy and even in advanced stages potentially curable. Surgery paired with multiagent chemotherapy including platinum-based agents and etoposide are often cited in patients who achieve a complete remission. While reports of successfully treated patients have emerged, the scarcity of prospective clinical trials has slowed the validation of effective treatment regimens. The value of extensive surgery, radiation therapy, and high-dose chemotherapy with autologous stem cell rescue remain uncertain. Insight into the biology underlying SCCOHT is desperately needed to guide the implementation of novel therapeutics in SCCOHT.
On the Insignificant Cross-Sectional Risk-Return Relationship  [PDF]
Gerald H. L. Cheang, Joseph C. S. Kang, Michael Z. F. Li
Journal of Mathematical Finance (JMF) , 2012, DOI: 10.4236/jmf.2012.21004
Abstract: In their paper, “On the Cross-sectional Relation between Expected Returns and Betas”, Roll and Ross (1994) demonstrated that the expected returns and betas can have zero relationship even when the underlying market portfolio proxies are nearby the efficient frontier. In this note, we provide the mathematical details that lead to their conclusion and further show that their claim needs not hold for the entire set of MV portfolios.
Reentry: a key mechanism for integration of brain function
Gerald M. Edelman,Joseph A. Gally
Frontiers in Integrative Neuroscience , 2013, DOI: 10.3389/fnint.2013.00063
Abstract: Reentry in nervous systems is the ongoing bidirectional exchange of signals along reciprocal axonal fibers linking two or more brain areas. The hypothesis that reentrant signaling serves as a general mechanism to couple the functioning of multiple areas of the cerebral cortex and thalamus was first proposed in 1977 and 1978 (Edelman, 1978). A review of the amount and diversity of supporting experimental evidence accumulated since then suggests that reentry is among the most important integrative mechanisms in vertebrate brains (Edelman, 1993). Moreover, these data prompt testable hypotheses regarding mechanisms that favor the development and evolution of reentrant neural architectures.
Estimates of the maternal mortality ratio in two districts of the Brong-Ahafo region, Ghana
Smith,Jason B.; Fortney,Judith A.; Wong,Emelita; Amatya,Ramesh; Coleman,Nii A.; Johnson,Joseph de Graft;
Bulletin of the World Health Organization , 2001, DOI: 10.1590/S0042-96862001000500006
Abstract: objective: to estimate the maternal mortality ratio (mmr) by the sisterhood method in two districts of the brong-ahafo region of ghana, and to determine the impact of different assumptions and analytical decisions on these estimates. methods: indirect estimates of the mmr were calculated from data collected in 1995 by family health international (fhi) on 5202 women aged 15-49 years, using a household screen of randomly selected areas in the two districts. other data from the nationally representative 1994 ghana infant, child and maternal mortality survey (icmms) and from the 1997 kassena-nankana district study were also used for comparison. findings: based on the fhi data, the mmr was estimated to be 269 maternal deaths per 100 000 live births for both districts combined, a figure higher than icmms estimates. biases during data collection may account for this difference, including the fact that biases underestimating mortality are more common than those overestimating it. biases introduced during data analysis were also considered, but only the total fertility rate used to calculate the mmr seemed to affect the estimates significantly. conclusions: the results indicate that the sisterhood method is still being refined and the extent and impact of biases have only recently received attention. users of this method should be aware of limitations when interpreting results. we recommend using confidence limits around estimates, both to dispel false impressions of precision and to reduce overinterpretation of data.
Contractor Selection Criteria in Ghanaian Construction Industry: Benefits and Challenges  [PDF]
Daniel Nii Ayeh Ayettey, Humphrey Danso
Journal of Building Construction and Planning Research (JBCPR) , 2018, DOI: 10.4236/jbcpr.2018.64019
Abstract: Selecting a contractor for construction project is a difficult decision to be taken by a client because it may lead to construction delivery problems or successful delivery of the project. This study, therefore, investigated the contractor selection criteria in the Ghanaian construction industry, considering the benefits and challenges. A quantitative research method was adopted in this study through the use of a questionnaire. The target population for the study consisted of registered contractors and consultants in the Ashanti and Brong-Ahafo regions of Ghana. It was found that though the construction professionals are well vested with the prequalification selection criteria that are being used within the Ghanaian construction industry, they were not familiar with multi-criterial section methods. It was also found that the benefits of the contractor selection criteria include: enabling the client to select contractors who are performers for the project, saving the project owner a lot of time, minimizing the possibility of contractor default, and facilitating the achievement of project success and the objectives within the scheduled time. Furthermore, excessive cost and time overrun, poor quality standard, imprecise assessments due to lack of information, criteria being very complex and difficult to apply in practice, among others were identified as the challenges to the contractor selection criteria in Ghanaian construction industry. The study recommends for further studies to determine the impact of the identified challenges on construction projects, and ways to minimize the challenges.
Automatic Generation of Water Masks from RapidEye Images  [PDF]
Gideon Okpoti Tetteh, Maurice Sch?nert
Journal of Geoscience and Environment Protection (GEP) , 2015, DOI: 10.4236/gep.2015.310003
Abstract:

Water is a very important natural resource and it supports all life forms on earth. It is used by humans in various ways including drinking, agriculture and for scientific research. The aim of this research was to develop a routine to automatically extract water masks from RapidEye images, which could be used for further investigation such as water quality monitoring and change detection. A Python-based algorithm was therefore developed for this particular purpose. The developed routine combines three spectral indices namely Simple Ratios (SRs), Normalized Green Index (NGI) and Normalized Difference Water Index (NDWI). The two SRs are calculated between the NIR and green band, and between the NIR and red band. The NGI is calculated by rationing the green band to the sum of all bands in each image. The NDWI is calculated by differencing the green to the NIR and dividing by the sum of the green and NIR bands. The routine generates five intermediate water masks, which are spatially intersected to create a single intermediate water mask. In order to remove very small waterbodies and any remaining gaps in the intermediate water mask, morphological opening and closing were performed to generate the final water mask. This proposed algorithm was used to extract water masks from some RapidEye images. It yielded an Overall Accuracy of 95% and a mean Kappa Statistic of 0.889 using the confusion matrix approach.

Grain Size and Major Oxide Analyses of Selected Anthill Soils from Winneba Area, Ghana  [PDF]
George Mensah Tetteh, Julian Kuundaah Angwaasong Zuyeri
Journal of Geoscience and Environment Protection (GEP) , 2017, DOI: 10.4236/gep.2017.59018
Abstract: Termites build their habitat in the form of anthills or termitaria or termite mounds which are characterised by soil of clayey texture. This paper investigated the relative grain size from the base, middle and near the peak of three anthills located 20 km west of Winneba near the Apam-Winneba highway in Ghana and also correlated their elemental compositions. The results showed significant grain size gradation of soils which range from <0.075 mm to 2 mm such that coarse grains occurred at the base while finer fractions were at higher parts of the anthills. Major oxides (wt. %) showed that SiO2 (51.70 - 60.24) was positively correlated with total FeO (12.22 - 15.24), Al2O3 (22.18 - 28.88), MnO (0.08 - 0.09), and K2O (0.4 - 0.61). However, as K2O decreased with height on anthill, SiO2, total FeO and Al2O3 increased. Probably soils used to construct these anthills were derived from different rock types and/or the termites were selective in the use of soils rich in silica or iron oxide.
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