Assessing the determinants of adoption of improved cassava varieties among farmers in the Ashanti Region of Ghana

The study examined the adoption of improved cassava varieties among 350 cassava farmers in the Sekyere South District of Ashanti Region of Ghana. The improved cassava varieties introduced into the district were ‘Bankye Hemaa’, ‘Bankye Esam’ and ‘Bankye Afisiafi’. Among the respondents, 15 per cent have adopted at least one of the improved cassava varieties and 85 per cent were non adopters. The determinants of adoption and number of improved cassava varieties adopted by the farmers were analysed with the Probit and Tobit model. The results of the Probit model showed that extension services, access to credit, education, marital status, farmer based organization, and household size have significant positive effect on the probability of farmers to adopt improved cassava varieties. The Tobit estimates indicated that farmer based organization, household size, farm size, and extension contact positively influence the number of improved cassava varieties that farmers adopt. Age had negative influence on number of improved cassava varieties adopted. The study showed that in order to enhance adoption of improved cassava varieties, extension services should be intensified, farmers should form or join groups; farmers should also register with the credit union in the district to have access to credit. Policy makers and crop breeders should come out with varieties that best suit farmers’ objectives.

Mobile phone use among commercial drivers in Ghana: An important threat to road safety

Background: Ghana passed a law in 2012 banning the use of mobile phones while driving. However, data on compliance to the law has been lacking.Objective: To examine factors associated with mobile phone use while driving among Ghanaian commercial drivers.Methods: A survey was conducted among 627 commercial drivers (98.0% response rate). Bivariate and multivariate logistic regressions were performed to determine how a priori covariates influenced commercial drivers’ use of phones while driving. The covariates included driver age, education, driving route distance, driving under the influence (DUI), and knowledge that phone use during driving causes distraction.Results: Respondents were aware of the law (94.7%) but compliance was low (38%). Drivers who did not believe that cell phone use contributed to crash risk were more likely to report distracted driving (AOR 2.02,95%CI 1.05-3.9). Drivers who had completed primary (AOR 4.49,95%CI 1.14-17.78) or at least senior high school (AOR 6.89,95%CI 1.5-31.59) had increased odds of using the phone while driving, compared to those having no formal education. Drivers with 6-10 years (AOR 2.00,95%CI 1.00-3.98) or >10 years driving experience (AOR 2.87,95%CI 1.24-6.62) were more likely to report distracted driving compared to those with ≤5 years’ experience. Drivers who travelled longer distances were more likely to report distracted driving (AOR 2.41,95%CI 1.23-4.71). Those who had never engaged in DUI were less likely to use the phone while driving (AOR 0.06,95%CI 0.01-0.43).Conclusion: Future prevention efforts for distracted driving in Ghana will require targeted distracted driving enforcement and education for commercial drivers and their passengers. Funding: This study was funded, in part, by a grant (D43-TW007267) from the Fogarty International Center, US National Institutes of Health. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. Keywords: Mobile phone, commercial drivers, Ghana, road safety, distracted drivin

Defluorination of drinking water using surfactant modified zeolites

The prevalence of high concentrations of fluoride (i.e. > 1.5 mg/l) in groundwater in the Northernpart of Ghana especially around the Bongo communities has been an issue of concern.Owingto the arid nature of these localities, the inhabitants (who are mainly peasant farmers), relymore on groundwater sources for their drinking water. With the strenuous nature of their joband the warm weather conditions, the farmers generally consume more water, thus becomingmore vulnerable to dental and skeletal fluorosis. This study focused on the removal of fluoridefrom groundwater by employing surfactant modified zeolites (SMZ) synthesized using locallyavailable kaolin material as precursor. The zeolite synthesis involved calcination of kaolin, alkaline fusion and hydrothermal treatment. The final product was modified with 5g/L Hexadecyltrimethylammonium bromide (HDTMABr). The zeolite was characterised by Xray Diffraction(XRD), Energy Dispersive Xray (EDX) and Scanning Electron Microscopy (SEM) and the modified form employed in batch fluoride removal studies. The fluoride adsorption kinetics was studiedusing model water with varying initial fluoride concentration. From the EDX analysis, the synthesized zeolite NaLSX was found to comprise predominantly Oxygen (60%), Silicon (15%), and Aluminium (13%). The SEM showed the zeolite NaLSX crystals to be octahedrally shaped. The unmodified zeolite NaLSX was incapable of adsorbing fluoride ions but the surfactant modified zeolite adsorbed fluoride. The fluoride adsorption capacity of the modified zeolite was pH dependent and peaked at pH 6.0 – 7.0. Keywords: characterization, defluoridation, groundwater, surfactant, zeolite

Impurity and quaternions in nonrelativistic scattering from a quantum memory

Models of quantum computing rely on transformations of the states of a quantum memory. We study mathematical aspects of a model proposed by Wu in which the memory state is changed via the scattering of incoming particles. This operation causes the memory content to deviate from a pure state, i.e. induces impurity. For nonrelativistic particles scattered from a two-state memory and sufficiently general interaction potentials in 1+1 dimensions, we express impurity in terms of quaternionic commutators. In this context, pure memory states correspond to null hyperbolic quaternions. In the case with point interactions, the scattering process amounts to appropriate rotations of quaternions in the frequency domain. Our work complements a previous analysis by Margetis and Myers (2006 J. Phys. A 39 11567--11581).Comment: 16 pages, no figure

Factors Influencing Food Service Quality in Ghanaian Polytechnics

The aim of the study was to assess factors influencing food service quality in Ghanaian polytechnics. Service quality and customer satisfaction have been identified as key elements of the service-profit chain. A mixture of an exploratory and descriptive research designs were employed to study 250 respondents. Data was analysed using statistical tools such as the Statistical Package for Social Sciences (SPSS). The study revealed that all the service quality variables (tangibles, reliability, responsiveness, assurance and empathy) were positively related to customer satisfaction which indicates the higher the service quality, the higher customer satisfaction. The analysis of respondents’ expectations scores suggested that the most important expectations items were “accurate bill (3.18)”, “clean rest rooms (2.94)”, “clean, neat and appropriately dressed staff (2.46)” and “clean dining areas (3.34)”, which fall under the dimensions reliability and tangibles. In conclusion, customers were not sure whether the physical facilities, equipment and appearance of the personnel of the restaurants (Tangibles) were attractive. The study recommends that improving service quality in restaurant settings will not only increase customer satisfaction and strengthen customer loyalty, but also improve the restaurant’s reputation and generate greater revenue. Keywords: Service Quality, Customer Satisfaction, Restaurants, Polytechni

The perception and preference of consumers for local poultry meat in the Kumasi metropolis of Ghana

The study examined the preference for and perception of consumers concerning the locally produced poultry meat in the Kumasi metropolis in the Ashanti Region of Ghana. Fifty consumers were randomly selected. The results demonstrated that most consumers preferred the local poultry meat to the imported meat. The logit estimates indicated that factors such as age, gender, cold store, cut parts, and healthiness significantly influence consumers’ preference for the locally produced poultry meat. Age, gender and healthiness positively influence consumer’s preference, while cold store and cut parts negatively associated with consumer preference for local poultry meat. On the perception, 68 per cent of the consumers strongly agreed that local poultry meat is tough, while 58 per cent alleged that imported poultry meat is rather tough. In terms of affordability, 46 per cent of the consumers disagreed that local poultry meat is affordable, while 52 per cent strongly objected to the idea that imported poultry meat is relatively cheaper. In terms of availability, 54 per cent of the consumers admitted that local poultry meat is not readily available, while 58 per cent indicated that imported poultry meat is readily available and can be obtained at anytime. Sixty per cent of the respondents were of the opinion that local poultry meat taste better, while 46 per cent of the respondents indicated that imported poultry meat do not taste better. This was probably due to long period of refrigeration, which reduced its freshness and taste and made it less healthy for consumption. It is suggested that the government should subsidize the cost of inputs for the local poultry industry, since the results indicated that high cost was the major factor that influenced consumers’ purchasing decision

Learnings from implementing the excreta flow diagram (SFD) process in Kumasi

Excreta, Faecal or Shit Flow Diagrams (SFDs) are away to clearly represent how excreta flows along the sanitation service chain. This approach has already gained popularity and many SFDs have already been produced. To date little attention has been paid to the methods and data used, or the credibility of the SFDs. The SFD Promotion Initiative has created a tool to enable the wider roll-out of SFDs, which includes a credibility assessment. The product is a report on service delivery context with an embedded SFD. This briefing paper discusses the lessons learnt from trialling the tool and process developed through this initiative, in the city of Kumasi (Ghana). The most important lesson learnt is that stakeholder engagement is critical not only for obtaining credible data, but also for validating the SFD produced

Implementation of a 10.24 GS/s 12-bit Optoelectronics Analog-to-Digital Converter Based on a Polyphase Demultiplexing Architecture

AbstractIn this paper we present the practical implementation of a high-speed polyphase sampling and demultiplexing architecture for optoelectronics analog-to-digital converters (OADCs). The architecture consists of a one-stage divide-by-eight decimator circuit where optically-triggered samplers are cascaded to sample an analog input signal, and demultiplex different phases of the sampled signal to yield low data rate for electronic quantization. Electrical-in to electrical-out data format is maintained through the sampling, demultiplexing and quantization processes of the architecture thereby avoiding the need for electrical-to-optical and optical-to-electrical signal conversions. We experimentally demonstrate a 10.24 giga samples per second (GS/s), 12-bit resolution OADC system comprising the optically-triggered sampling circuits integrated with commercial electronic quantizers. Measurements performed on the OADC yielded an effective bit resolution (ENOB) of 10.3 bits, spurious free dynamic range (SFDR) of -32 dB and signal-to-noise and distortion ratio (SNDR) of 63.7 dB

Housing attributes and relative house prices in Ghana

Purpose The study of house prices has become more relevant in recent times after the global financial crisis. Using a housing data set from three regions of Ghana (collated from real estate agents), the purpose of this paper is to estimate the relative importance of housing attributes to house prices. Design/methodology/approach The hedonic regression analysis conducted indicates that location is the most powerful determinant of house prices. Other relevant factors are the number of bedrooms, the number of floors, the total floor area, land size, age of the house and luxury finishing. Findings The implications of these results are many. Policy wise, the study provides an evidence-based empirical study that supports the need for better urban planning to improve communities, which in turn is associated with house price appreciations. Homeowners, investors and creditors, particularly mortgage lenders could be the immediate beneficiaries. Drawing on this, improved urban planning could mitigate strategic defaults that results from house prices falling below mortgage loan balances. This is important for financial market stability. Originality/value The paper provides a comprehensive and unique understanding of the hedonic determinants of house prices in Ghana. Future studies could examine the effect of location upon mortgage lending in Ghana