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Louis D.K.,Ghana Technology University College | Hanson I.,Ghana Technology University College | Masonta M.T.,South African Council for Scientific and Industrial Research
2016 IST-Africa Conference, IST-Africa 2016 | Year: 2016

This paper introduces the Ghana Technology University College (GTUC) television white space (TVWS) network deployed in Accra, Ghana. The network, which is still work-in-progress, provides broadband Internet connectivity to six Senior High Schools and the GTUC-Abeka campus using two sub-networks built using White Space devices from two different manufacturers. After introducing the GTUC TVWS network, the paper then presents the preliminary results as well as few challenges facing the network. The ultimate results of the GTUC TVWS network will be interesting given that the regulator in Ghana, the National Communications Authority (NCA) has proceeded to issue a commercial license to operate on TVWS while the regulations are not finalised. © 2016 IIMC.


Badu K.,Ghana Technology University College | Badu K.,Kenya Medical Research Institute | Siangla J.,U.S. Army | Larbi J.,Ghana Technology University College | And 7 more authors.
Malaria Journal | Year: 2012

Background: The existing metrics of malaria transmission are limited in sensitivity under low transmission intensity. Robust surveillance systems are needed as interventions to monitor reduced transmission and prevention of rapid reintroduction. Serological tools based on antibody responses to parasite and vector antigens are potential tools for transmission measurements. The current study sought to evaluate antibody responses to Anopheles gambiae salivary gland peptide (gSG6- P1), as a biomarker of human exposure to Anopheles bites, in different transmission settings and seasons. The comparison between anti-MSP-1§ssub§19§esub§ IgG immune responders and non-responders allowed exploring the robustness of the gSG6-P1 peptide as a surveillance tool in an area of decreasing malaria transmission. Methods. Total IgG levels to gSG6-P1 were measured in an age-stratified cohort (< 5, 5-14 and ≥ 15 years) in a total of 1,366 participants from three localities in western Kenya [Kisii (hypoendemic), Kakamega (mesoendemic), and Kombewa (hyperendemic)] including 607 sera that were additionally tested for MSP-1§ssub§19§esub§ specific responses during a low and a high malaria transmission seasons. Antibody prevalence and levels were compared between localities with different transmission intensities. Regression analysis was performed to examine the association between gSG6-P1 and MSP-1§ssub§19§esub§ seroprevalence and parasite prevalence. Result: Seroprevalence of gSG6-P1 in the uphill population was 36% while it was 50% valley bottom (X2 = 13.2, df = 1, p < 0.001). Median gSG6-P1 antibody levels in the Valley bottom were twice as high as that observed in the uphill population [4.50 vs. 2.05, p < 0.001] and showed seasonal variation. The odds of gSG6-P1 seropositives having MSP-119 antibodies were almost three times higher than the odds of seronegatives (OR = 2.87, 95% CI [1.977, 4.176]). The observed parasite prevalence for Kisii, Kakamega and Kombewa were 4%, 19.7% and 44.6% whilst the equivalent gSG6-P1 seroprevalence were 28%, 34% and 54%, respectively. Conclusion: The seroprevalence of IgG to gSG6-P1 was sensitive and robust in distinguishing between hypo, meso and hyper transmission settings and seasonal fluctuations. © 2012 Badu et al.; licensee BioMed Central Ltd.


The underlying principle employing latent heat storage to store excess solar energy to drive solar powered absorption cooling system and space heating/hot water system has been experimentally investigated. The experimental setup investigated the performance of a 4.5 kW absorption system (COP of 0.66) and a PCM system. Four PCM experiments were conducted using 20 kg each of Erythritol to compare 3 heat transfer enhancement techniques; circular fins, longitudinal fins and multitube systems. The multitube system performed best with shortest complete melt time of 275 min (longitudinal finned - 430 min; circular finned incomplete melting within 8 h). The multitube system however, experienced subcooling during discharge. The longitudinal finned system performed best during discharge and experienced no subcooling. Overall utilization efficiencies achieved for multitube and longitudinal finned systems were 83.2% and 82% respectively. PCM quantities that will be required to meet 4 h of 100% peak cooling load for a semi-detached house (105 m2) were determined to be 242 kg and 238 kg respectively. To ensure overall improved charge and discharge performance, a combination of multitube and longitudinally finned in some configuration would be required. Modified equations for the evaluation of improved COPs of a LiBr/H2O absorption system have been proposed. © 2015 Elsevier Ltd.


Asunka S.,Ghana Technology University College
International Journal of Web-Based Learning and Teaching Technologies | Year: 2012

This study adopted a participatory action research (PAR) approach to identify and address the various cultural factors that contribute in hindering faculty adoption and use of a Learning Management System (LMS) for online collaborative learning (OCL) at a private university in Ghana. This followed a realization that an LMS that the university deployed for OCL purposes, and had been available for over five years, remained largely unused by faculty members despite that they have been trained, motivated and appropriately resourced to do so. With a preliminary investigation revealing the possible role of cultural factors, this study drew on some aspects of Hofstede's cultural dimensions theory to develop and conceptualize a research framework, and subsequently engaged 10 faculty members in a semester-long action study. Findings show that by collectively identifying the cultural underpinnings, and conscientiously working on them, faculty members can ultimately change their attitudes (as well as those of their other colleagues) significantly, and be better predisposed to using online collaborative tools and resources for OCL. Copyright © 2012, IGI Global.


Ameme B.K.,Ghana Technology University College
Journal of Internet Banking and Commerce | Year: 2015

Whilst most banks introduced internet banking services for the benefit of their customers, the adoption and use of the service had been very low. Strategies to increase the adoption and use of internet banking services eventually lead to the banks’ goal of maximizing profit. It is therefore essential for banks to understand the factors that affect the adoption of internet banking services. The purpose of this paper is to determine demographic factors that influence the adoption of internet banking services in a bid to improving the situation. Due to the limitations in accessing the population of developing economies, a sample of one bank was selected from a developing nation, Ghana. Ghana was strategically chosen due to the high internet penetration rate. Out of 506,203 customers of the chosen bank, only 32,337 customers who subscribed to the internet banking services were used for data analysis. 31, 886 representing 98.61% of internet banking customers were resident in Ghana whilst the remaining 451 representing 1.39% were non-residents, suggesting that the data for analysis represented the behavior of Ghanaians as citizens of developing economies, though the restriction to just one bank may limit the generalization of the findings. Chi-square techniques were employed in the study, using historical data of over eight years. The findings of the study revealed that demographic factors such as gender do not have significant effect on customers in adopting and using internet banking services. The study further concluded that there is a strong correlation between employment status, educational level and customer adoption and usage of internet banking services in Ghana. These findings will help banks to develop appropriate strategies in attracting and retaining their customers, through the design of specific marketing campaigns geared towards certain category of internet banking customers who are likely to adopt and use internet banking services. © 2015 Ameme BK.


Kester Q.-A.,Ghana Technology University College | Danquah P.,Pentecost University College
Proceedings of the 2012 IEEE 4th International Conference on Adaptive Science and Technology, ICAST 2012 | Year: 2012

This paper sets out to contribute to the general body of knowledge in the area of cryptography application and to support classification of secret information by developing a cipher algorithm to produce the ciphertext and also to decrypt ciphertext The algorithm ultimately makes it possible for the public keys to serve as a key for encryption and decryption as well as for authentication. © 2012 IEEE.


Kester Q.-A.,Ghana Technology University College
Proceedings of the 2012 IEEE 4th International Conference on Adaptive Science and Technology, ICAST 2012 | Year: 2012

Cryptography provides the platform and concepts for which cryptosystems are being developed. Pubkc Key Cryptosystems assure privacy as well as integrity of the transactions between two parties. This paper proposes a new system of Public-Key Exchange by using matrix and a scahr to achieve the shared secrete key. The algorithm used was proven using a mathematical example. © 2012 IEEE.


Kester Q.-A.,Ghana Technology University College | Koumadi K.M.,Ghana Technology University College
Proceedings of the 2012 IEEE 4th International Conference on Adaptive Science and Technology, ICAST 2012 | Year: 2012

This paper sets out to contribute to the general body of knowledge in the area of cryptography application and by developing a cipher algorithm to produce the ciphered image and also to decrypt ciphered image, ne algorithm ultimately makes it possible for encryption and decryption of the images based on the RGB pixel ne algorithm was implemented using MATLAB. © 2012 IEEE.


Anto S.K.,Ghana Technology University College
International Journal of Applied Linguistics and English Literature | Year: 2014

The task of this study is primarily to investigate the differences between English and Mo/Deg nominal group (NG) qualifiers to identify any similarities within the NG qualification structures of these languages. In otherwise, the study finds answers to the questions: “What are the qualifying elements within the Mo/Deg and English NGs?” and “What are the differences and similarities between the Mo/Deg NG qualification and that of English?” Using homogeneous sampling, the study purposefully sampled thirty (30) educated Mos/Dega (speakers of the Mo/Deg language). Short simple English sentences containing NG qualifiers designed by the researcher were given to them to translate into Mo/Deg. This was to see how the qualifiers are used in the language. Also, some of these sentences were given to some members of the staff of the Mo/Deg project of GILLBT to translate into Mo/Deg for further correct use of the qualifiers in the Mo/Deg language. The translated versions were then collected as data and analysed based on the Systemic Grammar principles of the NG structure. The results showed that the adjectival groups (AdjG), the clause, the numerals, and the determiners (pre-central, central, and post-central) occur at the qualifier position in Mo/Deg, whereas in English, it is the prepositional groups (PG), the adjectival groups (AdjG) (under some conditions), and the clause, which occupy the qualifier slot. However, it was also found out that the common linguistic units which occur in both languages as qualifiers are the adjectival groups and the clause. © Australian International Academic Centre, Australia.


Abedini N.C.,University of Michigan | Danso-Bamfo S.,Ridge Hospital | Moyer C.A.,University of Michigan | Danso K.A.,Kwame Nkrumah University Of Science And Technology | And 4 more authors.
Academic Medicine | Year: 2014

PROBLEM: International medical electives typically represent a unidirectional flow of students from economically advantaged countries in the global "North" to resource-poor nations in the global "South." Little is known about the impact of bilateral exchanges on students from less affluent nations. APPROACH: Since 2007, students from the University of Michigan Medical School (UMMS) and medical schools in Ghana have engaged in a bilateral clinical exchange program. A 45-item online survey was distributed to all 73 Ghanaian medical students who had rotated at UMMS from 2008 to 2010 to assess perspectives on the value and impact of their participation. OUTCOMES: Incoming Ghanaian students outnumbered outgoing UMMS students 73 to 33 during the study period. Of eligible Ghanaian students, 70% (51/73) participated in the survey, with 40 of 51 providing valid data on at least 50% of questions. Ninety-seven percent (37/38) reported that the UMMS rotation was valuable to their medical training, 90% (35/39) reported changes in how they approach patient care, and 77% (24/31) reported feeling better equipped to serve patients in their home community. Eighty-five percent of students (28/33) felt more inclined to pursue training opportunities outside of their home country after their rotation at UMMS. NEXT STEPS: More studies are needed to determine the feasibility of bidirectional exchanges as well as the short-term and long-term impact of rotations on students from underresourced settings and their hosts in more resource-rich environments.

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