ghanaopendata/ghanaian-research-english huggingface dataset:
Darcy Forchheimer nanofluid thin film flow of SWCNTs and heat transfer analysis over an unsteady stretching sheet

This article analyzes the Darcy Forchheimer 2D thin film fluid of nanoliquid. Flow of nanoliquid is made due to a flat unsteady stretchable sheet. In nanoliquids, nanomaterial is in form of CNTs (carbon nanotubes). Also, in present analysis, single walled carbon nanotubes (SWCNTs) are accounted as nanoparticles. The classical liquid �water� is treated as based liquid. The flow in permeable region is characterized by Darcy-Forchheimer relation. Heat transport phenomena are studied from convective point of view. The transformation of partial differential set of equations into strong ordinary differential frame is formed through appropriate variables. Homotopy Analysis Method (HAM) scheme is executed for solving the simplified set of equations. In addition, a numerical analysis (ND-Solve) is utilized for the convergence of the applied technique. The influence of some flow model quantities like P r (Prandtl number), ? (unsteadiness factor), k (porous medium factor), F (Darcy-porous medium factor) on liquid velocity and thermal field are scrutinized and studied through sketches. Certain physical factors like f(0) (friction factor coefficient) and ???(0) (rate of heat transport) are first derived and then presented through tables. � 2019 Author(s).

Source: UEW
Darcy-Forchheimer flow of MHD CNTs nanofluid radiative thermal behaviour and convective non uniform heat source/sink in the rotating frame with microstructure and inertial characteristics

In this research paper we examined Darcy-Forchheimer three-dimensional micro-polar nanofluid flow of carbon nanotubes (CNTs) based on water. The nanofluid flow is examined between parallel and horizontal plates in a rotating system. The thermal radiation impact is taken to be varying in the absorption/generation for the purpose, to see the concentration as well as the temperature modifications between the nanofluid and the surfaces. The micro-polar nanofluid in permeable media is designated by assuming the Darcy-Forchheimer model where drenching permeable space obeys the Darcy-Forchheimer expression. For Skin friction coefficient it is perceived to be larger for weak concentration and smaller for strong concentration. The impacts of the porosity, rotation and inertia coefficient analysis have been mainly focused in present investigation. Plots have been presented in order to study how the velocities and temperature profile get affected by various flow parameters. The leading equations are converted to a system of nonlinear differential equations and then homotopic method is employed for solution. The other physical features of flow such as Skin friction, heat flux and mass flux have been studied. The impacts of the porosity, rotation and inertia coefficient have been mainly focused in this research. � 2018 Author(s).

Source: UEW
Darcy-forchheimer flow of mhd nanofluid thin film flow with joule dissipation and navier�s partial slip

In this paper investigation is carried out on two dimensional liquid film with heat generation/ absorption and variable heat transmission of nanofluid MHD flow on an unsteady stretching sheet. Flow of nanofluid phenomenon is model from the basic governing time-dependent equations. By the use of suitable similarity transformation, these basic equations are transformed to differential equations system. The nanofluid is supposed to slip along the boundary of the sheet. To find the solution of the transformed modeled equations Homotopy Analysis technique is used. A numerical survey is presented for the convergence of the implemented technique. Effects of variations of different influential parameters like Nu number and Cfx for fluid flow of liquid film with mass and heat transfer is observed. The effect of unsteadiness parameter S over thin film is explored analytically for different values. It is investigated that for large values of M that the nanofluid films velocity distribution decreases,where increase in the value of K1, a reduction in the porous medium permeability. Thickness of thermal boundary layer decreases with increasing values of S, while increase of radiation parameter, the Nusselt number also increases. Furthermore, the embedded parameters used for comprehension of the physical presentation, like inertial parameter F1, magnetic parameter M, permeability parameter K1, Eckert number Ec, Prandtl number Pr, and parameters ?1, ?2 and ? has been presented by graphs and discussed in detail. � 2018 The Author(s). Published by IOP Publishing Ltd.

Source: UEW
Data-driven multi-index overlay gold prospectivity mapping using geophysical and remote sensing datasets

The comparative relevance of each geospatial component of mineralization differs from one geological terrane to the other because various sought-after mineral deposit-types synonymously differ in different geological terranes. Hence, the possibility of employing a conceptual model to obtain a relationship or a quantitative function between various geospatial features (evidential layers) with respect to the mineral being sought is laudable, though these features may not necessarily have a generically related effect with the mineral being sought. As a consequence, there is the need to employ a technique that has the capacity to recognize the efficient and inefficient geospatial indicators of the mineral deposit-type being sought. In view of this, this study employed the logistic function, concentration-area fractal model and the prediction-area (P-A) plot to transform and discretize the continuous value of each evidential layer as well as generating intersection points of prediction rate indicators that are essential in obtaining the normalized densities, which were subsequently employed in generating the objective weight for each evidential layer in a data-driven way. The P-A and the normalized density techniques employed were vital in recognizing the indicator and non-indicator criteria. The results obtained acknowledged the potassium concentration layer as a non-indicator of gold mineralization within the study area and subsequently recognized the hydroxyl bearing mineral concentration layer as the most plausible indicator criteria among the six evidential layers (lineament density, iron concentration, hydroxyl concentration, gravity anomaly, magnetic anomaly and potassium concentration) employed in this study. These five indicator criteria were integrated to generate a mineral prospectivity map (MPM) over the study area based on the data-driven multi-index overlay approach adopted. The prediction rate for each of the 6 evidential layers (5 of which were the indicator criteria) as well as the MPM produced indicates that, the generation of objective weights in a data-driven manner via normalized density enhances the predicting ability of the MPM produced in comparison with the individual evidential layers. � 2022 Elsevier Ltd

Source: UEW
Deaf people’s satisfaction with health care services in the Wa Municipality, Ghana

This study explored deaf people’s satisfaction with healthcare services in the Wa Municipality. The study employed Phenomenological design. Twelve participants, comprising seven males and five females were purposively sampled. Data were obtained through interviews and analysed thematically. The results show that deaf people in Wa Municipality have positive and negative experiences with healthcare access. Some healthcare staff are respectful, caring, and empathetic. However, due to communication difficulties, deaf people endure negative experiences such as discrimination, stigmatization, poor staff attitude, and delay in health facilities. Factors that contribute to satisfaction among deaf people include communication, reduced waiting time, and equity in treatment. The study concluded that deaf people are not satisfied with healthcare services in the Wa Municipality. The study then recommended that management of health facilities within Wa Municipality should strengthen their monitoring mechanism to identify and sanction staff with negative attitudes towards deaf people. Again, the study recommended that management of health facilities should organize in-service trainings for staff on areas of communication and interpersonal relations. Finally, training to communicate using Ghanaian Sign Language should be given to health staff as part of their training.

Source: UEW
Deaf students access to counselling services at the University of Education, winneba

This qualitative study sought to explore deaf students access to counselling services at the University of Education, Winneba. The study was underpinned by Murray’s system of needs theory, phenomenological research was adopted as the design and a purposive sampling technique was used to select twelve deaf students and two counsellors for the study. Data was collected through semi-structured interviews and analyzed thematically via verbatim transcriptions, coding, drawing of themes and discussions of findings. The findings of the study indicated that deaf students have unique counselling needs such as educational needs, financial, health and personal needs that are often not adequately addressed by the existing counselling services at the University of Education, Winneba. The findings again revealed that deaf students often perceived counselling as mere advise-giving, not relevant for the needs and is meant for the hearing students only. Deaf students however, as revealed by the students resort to accessing counselling services from lecturers, church leaders, peers and sign language interpreters who are most times closer to them and who again can communicate with them through sign language. Based on the study's findings, it is recommended that the University of Education, Winneba develop a specialized counselling service tailored towards identifying and meeting the needs of the deaf student.

Source: UEW
Deaf students reading comprehension, a case study of Presbyterian College of Education

The study set out to investigate challenges deaf students of Presbyterian College of Education encounter in reading comprehension. Twenty-eight participants made up of sixteen deaf students, seven Sign language interpreters and five English language tutors were involved. The Mixed method was used and data was gathered by interview, questionnaire and test then analyzed into mean and standard deviation whilst the interview data was presented by description. The study found that the students faced challenges in using vocabulary, using sign language to interpret the comprehension texts, accessing and utilizing incidental information and cultural background of the targeted language as well as answering the comprehension questions. The challenges stemmed from factors including deafness, communication with the larger community, the nature of academic materials available to the Deaf, language tutor factor and sign language interpreter factor. However, strategies such as accompanying texts with visuals, use of moderated texts, conscious activation of schema during lessons, vocabulary instruction could curb the deaf students’ challenges in reading comprehension. The study recommended training workshops to equip the English language tutors with deaf appropriate comprehension strategies, upgrading of Sign language interpreters’ skills, provision of resources that support visual learning and also a stronger collaboration between the language tutors and the interpreters in the planning and delivery of English language lessons.

Source: UEW
Debt crisis and Ghana’s economic diplomacy

The study sought to investigate how Ghana‘s debt crisis with the Bretton Woods Institutions influenced its economic diplomacy in the fourth republic. Other objectives of the study were to; find out how the debt crisis in Ghana‘s fourth republic has impacts the country‘s economy and its citizenry; investigate the factors and reasons responsible for Ghana‘s debt trap to the West (Bretton Woods Institution). The study utilizes neoliberalism and debt trap theories as theoretical underpinnings. The study adopted the qualitative approach using a causal design. Primary and secondary data collected were analysed using thematic narratives. The data analysed established that Ghana‘s debt with, the IMF/WB has reduced its vibrancy in economic diplomacy and increased its alignment with the West. The study further revealed that, Ghana has been trapped in debt to the West through loan repayment schedules, dependence and reliance on IMF/WB loans for development. The study concludes that IMF/WB loans contain conditionality‘s and SAPs, which is the ideological basis of neoliberalism and are strict measures with which Ghana and other developing countries are greatly contesting. The study recommends four alternative funding sources for Ghana and other Less Developing Economies (LDEs). First, reaching out to foreign bond market. Second, support China‘s Large-Scale direct infrastructure investment policy. Third, Ghana needs to keep pushing for true free trade in agricultural goods. Fourth, they should support financial intermediation. In addition, it recommends the ―East Asian IMF Principle model‖. Further study suggested includes replication of the study but with case studies such as the International Bond market or other IFIs and comparative study of IMF/WB under two different governments in Ghana‘s fourth republic.

Source: UEW
Decline in cultural values in Ghana_ a case of Kloyosipklemi festival of Yilo Krobos in the Eastern region of Ghana

This thesis examined the decline in cultural values in Ghana with reference to Kloyosikplemi festival of the people of the Yilo Krobo in the Eastern Region of Ghana. Specifically, the study described how the Kloyosikplemi festival is celebrated, the cultural values embedded in the festival and why the patronage of the festival is on the low ebb. For the purpose of the study the data were collected through interviews and participatory observation. The target population was limited to about 2000 people who take part in the festival celebration because of proximity and resource constraints. However the accessible population was 50 and out of these, a sample of five respondents were purposively selected which includes spokesperson, queen mother, chief, a traditional priest and a clan head or leader. The study demonstrates how the Kloyosikplemi festival is celebrated as well as the cultural valves embedded in it. However, modernity and civilization has influenced the celebration of the festival especially on the part of the Christian youth. The study recommends that private event like visiting the royal mausoleum and purification rituals and washing of the ancestral stools which were restricted to the chief and the functionaries should be made open to the general public especially to the youth to learn how these rituals are performed and on behalf of the community. This will make the youth appreciate and fully participate in the celebration of the Kloyosikplemi festival. The study however, suggest that any further research should incorporate socio cultural dimensions of the festivals in order to understand issues pertaining to the current trends of low patronage of the Kloyosikplemi festival of Krobos in general. Further studies should also explore various ways of packaging the festival to become more attractive to global society and make recommendations for the development of this potential.1

Source: UEW
Deitic elements in academic discourse an analysis of students’ long essays in colleges of education in the Eastern Region

This study examines the deictic elements in students’ long essays using Levinson’s (2004) Theory of Deixis. Specifically, it identified the deictic elements realized and determined their functions in the long essays of the students. A purposive sampling was used to choose 350 written essays on English related topics from seven colleges of education. The qualitative analysis revealed that student teachers in all the colleges used the five types of deixis according to Levinson (2004) in their writing. Personal deixis was the most preferred deixis used by the student teachers while social deixis was the least realized. Moreover, the analysis showed that words in the essays which function deictically may be able to function as personal and demonstrative references; identify speakers and listeners; indicate psychological distance and perform grammatical functions. In addition to appropriate use of the elements, there were instances of inappropriate use of person deixis by student teachers. When this happens, communication between the writer and the reader becomes very difficult and creates cause confusion for the reader.

Source: UEW
Delegates’ views on monetisation of primaries a comparative study of NDC and NPP parliamentary primaries in Yunyoo constituency.

The current study explores delegates' views and nuanced perspectives on the monetization of parliamentary primaries in the Yunyoo Constituency of the North East region of Ghana. Utilizing qualitative research methods, including detailed interviews, the study examines the impact of monetization on the country's democracy and the overall functioning of the political system. The findings reveal that delegates perceive monetization as a significant challenge to the electoral process, leading to corruption, unfairness, and bias in candidate selection, ultimately undermining the political system. The study identifies several factors fueling the monetization of parliamentary primaries, including endemic poverty, rising inequality, the insatiable quest for money by prospective voters, failed promises, the perception of politics as a business, and the absence of government financial support for political parties and their candidates, along with weak regulation of political financing. The practical implications of these findings for electoral reform and democratic governance in Ghana are discussed. The study highlights the need for demonetization, the establishment of more transparent and accountable party financing mechanisms, and reforms that strengthen the role and independence of delegates in the primary election process.

Source: UEW
Density, some anatomical properties and natural durability of stem and branch wood of two tropical hardwood species for ground applications

As wood resources deplete, branchwood is being promoted to supplement stemwood in Ghana, but its natural durability, which indicates its service life and can influence its acceptance and use is scarcely studied. This study compares the natural durability and some anatomical properties of branchwood and stemwood of Entandrophragma cylindricum (sapele) and Khaya ivorensis (mahogany) using Ceiba pentandra stemwood as control. Natural durability test followed field test method according to European Standard EN 252 1989 in combination with percentage weight losses while the anatomical investigations followed IAWA Committee 1989 recommendations. For each species, two branch logs were cut from each of two sampled trees from two natural forests in Ghana. Stemwood was also obtained from the same forest reserves as the branches. All sample groups were tested at air-dried moisture content of 14���2�% as specified in the standard. Branchwood of both species were denser than their stemwood, but in addition to mahogany stemwood they were rated �non-durable�, while sapele stemwood was rated moderately durable. Thus at 5�% significance level, natural durability of mahogany branchwood appeared comparable to that of its stemwood whereas sapele branchwood was significantly less durable than its stemwood but more durable than Ceiba stemwood. Branchwood and stemwood vessels diameter and proportion also were significantly different (p�<�0.1). Expectedly, density correlated positively with natural durability, but the correlation among anatomical properties, natural durability and density were stronger in stemwood than in branchwood. In conclusion, stem and branchwood of mahogany are both non-durable but sapele stemwood appears better than its branchwood for ground applications. Anatomical properties of stemwood influenced natural durability more than those of branchwood. For better acceptance of branchwood of the species for wood products manufacturing, further research would be necessary for additional data on their toxic extractive levels, mechanical properties and durability at different sites or/and using other drying methods. � 2015, Springer-Verlag Berlin Heidelberg.

Source: UEW
The depiction of invectives and violence in Kumawood movies

Films are a form of entertainment that reflects everyday lives, which often accentuates on romance, humour, invectives and violent elements. The Kumawood films which is an Akan language movies are premised on these elements. Some scholars have argued that the Akan language movies are sub-standard and full of invectives and violence. This study therefore examines the delineations of invectives and violence in Kumawood movies using the qualitative approach and scrutinizes the elements of invectives and violence embedded in 16 Kumawood movies using qualitative content analysis as a research design. Through the aggressive cue theory, it probed into the types of invectives and violence in the movies and the degree of representation of these phenomena in the 16 movies. The study revealed three types of invectives and violence in the 16 movies: physical invectives, visual invectives, and sexotype invectives. Likewise, the study discovered physical violence, non-physical violence and sexual violence as the types of violence embedded in the 16 Kumawood movies. Findings from the study confirm that physical invectives and physical violence permeate the Kumawood movies, reinforcing the notion that such aberrant behaviours can be normalized in society. The study recommends that The National Film Authority of Ghana develop and ensure stricter censoring of the Kumawood movies to be devoid of excessive use of invectives and violence.

Source: UEW
Deployment techniques and link budget analysis of fiber backbone networks in Ghana

Fiber backbone is almost at the verge of replacing the microwave link completely owing to the high demand for capacity. To achieve this high capacity with fiber in other to reduce complaints of poor quality of service, proper deployment techniques must be employed by network operators. This project delves into the network elements, their installations and their interconnection topologies of the various fiber backbones deployed by all the network operators in Ghana. The analytic method was used for the work. Link budget analysis was done over the existing links of the backbone of all the network operators to obtain the losses in the links. After the analysis it was observed that the duct method of installation had lesser losses than the direct buried method due to it being less prone to fiber cut. Both duct and direct buried methods of installation should be used depending on the environment between two nodes. This will help cut down the cost of installation. Also engineers should comply with regulations on deployment. They should ensure that factors which will lead to a reduced performance of the fiber such as poor termination of the cable, splicing fallen outside its defined range of 0- 0.05dB, shallow burial depth, bends, absence of warning tapes and poor laying of cable are avoided.

Source: UEW