Some Aspects of Animal Trypanosomiasis in Somalia

This thesis is concerned with various aspects of animal trypanosomiasis in Somalia, with the objective of highlighting the need for further research and study. Some of the results described in this thesis constitute the first preliminary work on animal trypanosomiasis in Somalia

THE EFFECT OF INFORMATION TECHNOLOGY ON THE COOPERATIVE INSURANCE INDUSTRY CASE STUDY: SHIEKAN INSURANCE AND REINSURANCE COMPANY – SUDAN (EMPIRICAL STUDY)

This study aimed to investigate the effect of information technology on the cooperative insurance industry, Shiekan Insurance and Reinsurance Company – Sudan as a case study. The study has achieved in the hypothesis that there is a strong positive relationship between the application of information technology system and the development of management and performance of Shiekan Insurance Company. The study found that the majority of dealers in the Sudanese insurance market have weak in dealing with technology. The study concluded that there a clear impact of information technology and achieving a competitive advantage of Shiekan Insurance company. The study recommends the need to move to the use of technology in the insurance sector in Sudan, especially in the Shiekan Insurance Company because it will have a clear impact on the speed of completion of transactions and claims and save costs. Key Words: Sudan, Reinsurance, Cooperative Insurance, Information Technology, Shiekan

Computational Analysis Of Incompressible Viscous Flow Over Single And Multi-Element Airfoils

The flow-field around a multi-element airfoil with leading-edge slat and trailing-edge flap in landing configuration was performed as well as the prediction of the time dependent flow over a NACA 0012 airfoil. The two dimensional incompressible Navier-Stokes equations with a numerical method based on the pseudo-compressibility approach was developed to simulate viscous turbulent flow around single and multi-element airfoils. The algorithm uses upwind-biased scheme of third order accuracy for the calculation of the inviscid fluxes, while a second order central differencing is used for viscous fluxes, the equations are solved using Lower-Upper Symmetric Gauss Seidel (LUSGS) scheme. The grids around multi-element airfoil are efficiently generated using a multi-block structure technique.The Baldwin-Lomax algebraic turbulence model is used to consider the effect of turbulence. Computed results for the studied cases were compared with experimental data in terms of surface pressure and lift coefficients which show reasonable agreement. Key Words: Multi-Element Airfoil, Pseudo-Compressibility, Confluent Boundary Layer, Flow Separation, Baldwin-Lomax Turbulence Mode

Teacher Written Feedback In Efl Yemeni Context: A Qualitative Case Study Of Students' Reactions And Utilisations

Maklum balas bertulis guru merupakan input daripada seseorang pembaca kepada seseorang penulis, dengan maklumat yang disediakan kepada penulis untuk rujukan.� Teacher written feedback is the input from a reader to a writer with the effect of providing information to the writer for revision

FACTORS INFLUENCING EFL STUDENTS’ UTILISATION OF TEACHER WRITTEN FEEDBACK

This qualitative case study investigated factors affecting EFL university students’ use of teacher written feedback. Ten Yemeni EFL university students participated in this study. Data included students’ written essays, teacher written feedback, and semi-structured interviews. Students’ use of teacher written feedback was analysed using an adapted rating scheme. Thematic analysis was used for analysing the interviews. The results revealed that the major factors affecting students’ use of teacher written feedback are feedback-related factors (teachers’ use of correction symbols, legibility of written feedback, explicitness of written feedback, and wording of written feedback) and student-related factors (students’ emotional responses towards teacher written feedback and students’ previous literacy experience). Understanding the impact of these factors on students’ utilisation of teacher written feedback may help teachers to provide constructive and effective written feedback to their students. Training EFL students on how to utilise teacher written feedback successfully is important for improving the practice of teacher written feedback

Knowledge Governance in Abu Dhabi: Modelling-In the ‘Implicit’ For Organizational Innovation

This thesis, on knowledge governance, focuses mainly on the processes, strategies, and structure of capturing and transferring implicit knowledge among employees in the Abu Dhabi government entities. It identifies the method of utilizing and factors influencing the success of acquiring, storing, and transferring implicit knowledge through the activation of a Personal Knowledge Network (PKN) to improve organizational performance. The work is based on a comprehensive literature review of relevant academic and government resources, direct observation of the researcher, and a two-stage interview of personnel from different entities of the Abu Dhabi government. The discussions with the key players in knowledge management highlighted the needs of having a unified knowledge governance model. This research reveals the requirements for a model of knowledge management in Abu Dhabi government entities. The findings from the first stage of the interviews helped finalize the knowledge governance model to help capture the implicit knowledge in a Personal Knowledge Network (PKN). To examine the validity and applicability of the PKN model, and to understand its possible benefits, in the second stage around 25 interviews were conducted in five government entities in AD Emirate. The interviewees indicated that the elements of the model are effective and interrelated and that there is a likely to be a positive relationship between the application of the model and the four factors of success in knowledge management: Human-oriented, Organization-oriented, and Management-oriented and technology-oriented. The interviewees also believe that the application of the model is likely to achieve the desired outcomes of raising the productivity and performance of the individuals and the organization. The thesis recommends the use of the proposed model as a foundation stone to implement effective KM and promoting knowledge sharing culture in the government entities in Abu Dhabi. Further research to identify other factors influencing the application and outcome of the model, and to evaluate the outcomes of the model would be helpful for the government to apply the model and unify and generalize it among its entities

Preferred characterization of orbital infection (cellulitis) with exposure dose and relative medication

Background: A retrospective study presenting the endemic orbital infection (cellulitis) that breakout during dusty storm season; aiming to ascertain and showing the precedence of MRI for diagnosis of orbital infection rather than CT and revealing the diagnostic abilities of cross-sectional matrices spectrum.Methods: Based on retrospective collection of diagnostics (CT and MRI) information for randomly selected patients with cellulitis and the targeting the relevant data (image interpretation, exposure dose (DLP and CTDIvol), age, BMI and matrix cross-section spectrum findings).Results: The exposure dose of orbital CT exam was 59.4 (mGy) as CT dose index (CTDIvol) and 917.3 (mGy/cm) as dose length product (DLP) that increase by increment of age and BMI. The obese patients only exposed to dose exceeding the National Diagnostic Reference by 2.8%. MRI confirmed the inflammation around the optic nerve and extension to posterio-inferior portion of the globe and affecting the optic nerve with left sided proptosis (0.5cm) better than CT. The cross-sectional matrix successfully revealed that: the Lt optic nerve’s gray value (density) increases by a factor of 17.7 (a u) and enlarged by 5 pixels greater than the Rt optic nerve. Thickening, rough surface increased gray value by 30.5 (a u), muco-thickening and choncheal enlargement at the medial boarder of Lt orbit as 10.0 pixel and Lt eye ball enlarged by a factor of 10.9 pixels.Conclusions: MRI wisely diagnose orbital infection with more details and overcoming patient radiation exposure and usage of image spectrum gives detailed characterization of lesion morphology

Harnessing the mathematics of matrix decomposition to solve planted and maximum clique problem

We consider the problem of identifying a maximum clique in a given graph. We have proposed a mathematical model for this problem. The model resembles the matrix decomposition of the adjacency matrix of a given graph. The objective function of the mathematical model includes a weighted $\ell_{1}$-norm of the sparse matrix of the decomposition, which has an advantage over the known $\ell_{1}-$norm in reducing the error. The use of dynamically changing the weights for the $\ell_{1}$-norm has been motivated. We have used proximal operators within the iterates of the ADMM (alternating direction method of multipliers) algorithm to solve the optimization problem. Convergence of the proposed ADMM algorithm has been provided. The theoretical guarantee of the maximum clique in the form of the low-rank matrix has also been established using the golfing scheme to construct approximate dual certificates. We have constructed conditions that guarantee the recovery and uniqueness of the solution, as well as a tight bound on the dual matrix that validates optimality conditions. Numerical results for planted cliques are presented showing clear advantages of our model when compared with two recent mathematical models. Results are also presented for randomly generated graphs with minimal errors. These errors are found using a formula we have proposed based on the size of the clique. Moreover, we have applied our algorithm to real-world graphs for which cliques have been recovered successfully. The validity of these clique sizes comes from the decomposition of input graph into a rank-one matrix (corresponds to the clique) and a sparse matrix