The incidence rate of female breast cancer in Saudi Arabia: an observational descriptive epidemiological analysis of data from Saudi Cancer Registry 2001-2008

Background: This study presents descriptive epidemiological data related to breast cancer cases diagnosed from 2001 to 2008 among Saudi women, including the frequency and percentage of cases, the crude incidence rate (CIR), and the age-standardized incidence rate (ASIR), adjusted by the region and year of diagnosis. Methods: This is a retrospective descriptive epidemiological study of all Saudi female breast cancer cases from 2001 to 2008. The statistical analyses were conducted using descriptive statistics, a linear regression model, and analysis of variance with the Statistical Package for the Social Sciences version 20 (IBM Corporation, Armonk, NY, USA). Results: A total of 6,922 female breast cancer cases were recorded in the Saudi Cancer Registry from 2001 to 2008. The highest overall percentages (38.6% and 31.2%) of female breast cancer cases were documented in women who were 30–44 and 45–59 years of age, respectively. The eastern region of Saudi Arabia had the highest overall ASIR, at 26.6 per 100,000 women, followed by Riyadh at 20.5 and Makkah at 19.4. Jazan, Baha, and Asir had the lowest average ASIRs, at 4.8, 6.1, and 7.3 per 100,000 women, respectively. The region of Jouf (24.2%; CIR 11.2, ASIR 17.2) had the highest changes in CIR and ASIR from 2001 to 2008. While Qassim, Jazan and Tabuk recorded down-trending rates with negative values. Conclusion: There was a significant increase in the CIRs and ASIRs for female breast cancer between 2001 and 2008. The majority of breast cancer cases occurred among younger women. The region of Jouf had the greatest significant differences of CIR and ASIR during 2001 to 2008. Jazan, Baha, and Najran had the lowest average CIRs and ASIRs of female breast cancer, whereas the linear trend upward is a concern in certain regions, such as the eastern region, Makkah, and Riyadh. However, further analytical epidemiological research is needed to identify the potential risk factors involved in the increase in the prevalence of breast cancer among Saudi women

THE ASSESSMENTS OF INTERNET-BASED TECHNOLOGY USE BY UNIVERSITY ACADEMIC MEMBERS

Social networking applications (SNAs), as technologies that rely on internet infrastructure, are widely used as platforms for user interaction, content creation and social communication. However, in recent years, SNAs have been used in the context of teaching and learning, and this aspect, as well as others, has attracted research attention. Limited research has investigated the motivations and barriers to teaching with SNAs in higher education, and so this study sought to examine the purposes, motivations and barriers associated with SNA use in education among academic members at Albaha University, Saudi Arabia. A quantitative research design involving a sample of academic members from various faculties at Albaha University (n=105) was implemented to illuminate current SNA usage patterns, usage purposes and perceptions of SNAs in education. The results indicated that 86.7 per cent of the academic members had used SNAs for educational purposes. Academic members were positively influenced by the use of these platforms in teaching and learning; they suggested that these emerging technologies play a vital role in student outcomes. The main motivating factor for SNA usage related to the opportunities they afford for seamless and rapid communication with students, while the principal barrier to SNA usage was the possibility of dissemination of unreliable information via SNAs

An investigation into how Web 2.0 technologies can be used to enhance the educational supervision of teachers

The concept of educational supervision has witnessed significant development in recent years and many studies in this field have demonstrated how computers and the internet have been employed in the process. However, the researcher has found no studies that examined the use of Web 2.0 online platforms and tools that promote interaction among users in educational supervision.The main purpose of this study is to examine the possibility of using Web 2.0 technologies in educational supervision in Saudi Arabia and investigate how these technologies can be used to enhance the educational supervision of teachers. In practical terms I planned to introduce Web 2.0 tools into the educational supervision process to support and enhance activities undertaken by supervisors and teachers.A small-scale four-stage development programme was run with groups of teachers and supervisors with the evaluation of that process making use of a mixed method approach to data collection. In the first stage interviews were held with seven supervisors and seven teachers, in order to explore the possibility of application, to build a picture and to enable me to become acquainted with data collection and analysis procedures and techniques. In the second stage, data was collected from 23 supervisors by focus group and questionnaire regarding the current usage of Web 2.0 technology in educational supervision and to examine how such technologies could facilitate supervisors’ work. In stages three and four, data was collected from thirty teachers through a pre-survey, followed by a Web 2.0 training programme and post-survey. The objectives in these stages were to study teachers’ usage of Web 2.0 technology and to evaluate the effect of the training programme in order to recognise and use the affordances of Web 2.0 tools for supervision.Teachers’ knowledge, awareness and confidence in relation to all of the tools were shown to have increased after the training programme, with the majority showing enthusiasm about employing this technology in educational supervision. The participants generally agreed that using Web 2.0 technologies in educational supervision is crucial and facilitated supervisors’ work

Reviewing the effectiveness of artificial intelligence techniques against cyber security risks

The rapid increase in malicious cyber-criminal activities has made the field of cybersecurity a crucial research discipline. Over the areas, the advancement in information technology has enabled cybercriminals to launch increasingly sophisticated attacks that can endanger cybersecurity. Due to this, traditional cybersecurity solutions have become ineffective against emerging cyberattacks. However, the advent of Artificial Intelligence (AI) – particularly Machine Learning (ML) and Deep Learning (DL) – and cryptographic techniques have shown promising results in countering the evolving cyber threats caused by adversaries. Therefore, in this study, AI's potential in enhancing cybersecurity solutions is discussed. Additionally, the study has provided an in-depth analysis of different AI-based techniques that can detect, analyse, and prevent cyber threats. In the end, the present study has also discussed future research opportunities that are linked with the development of AI systems in the field of cybersecurity

Delay-robust distributed secondary frequency control for next-generation power systems: Stability analysis and controller synthesis

Power systems worldwide are undergoing major transformation to enable a low-carbon future. These developments require new procedures for advanced control to ensure a stable and efficient system operation. Consensus-based distributed secondary frequency control schemes have the potential to ensure real-time frequency restoration and economic dispatch simultaneously in future power systems with significant contribution of renewable energy sources. However, owing to their distributed nature, these control schemes critically depend on communication between different controlled units. Thus, robustness against communication uncertainty is crucial for their reliable operation. In this work, control design and stability analysis of delay-robust secondary frequency control in next-generation power systems are studied. The main contributions of the present thesis can be summarised as follows: (i) A design procedure for a consensus-based secondary frequency controller in microgrids is proposed that ensures robustness with respect to heterogeneous fast-varying communication delays and simultaneously provides the option to trade off the L2-gain performance against the number of required communication links; (ii) The conditions for robust stability of a consensus-based frequency control scheme applied to a power system model with second-order turbine-governor dynamics in the presence of heterogeneous time-varying communication delays and dynamic communication topology are derived; (iii) The performance of the proposed consensus-based secondary frequency controller is analysed in a detailed model capturing the dynamic behaviour of a real system. The results provide insights to the robustness of the closed-loop system with respect to unmodelled (voltage and higher-order generator) dynamics as well as communication delays

Family business corporate performance and capital structure : evidence from Saudi Arabia

Agency costs, ownership concentration, firm performance, and capital structure are four constructs that have been extensively examined in finance literature. The effect of agency costs and ownership concentration on firm performance and capital structure, however, has been under-researched despite the formulation of theoretical propositions regarding the relationship between these constructs. The Saudi Arabian economy is characterized by a large number of family-owned businesses. However, few studies have investigated family firms in the context of capital market research. Nevertheless, in a study of the top 300 manufacturing and top 50 merchandising and other companies based on the 1965 Fortune 500 list (Burch, 1972) , it was found that more than 47% of these publicly firms in the US were controlled by families.This research addresses the following questions: Is there any significant difference in agency costs between family firms and non-family firms? Do family-owned firms perform better? Does concentration of ownership affect firm performance? In addition, the research addresses the determinants of capital structure: Is there a difference in capital structure between family and non-family firms?The main objectives of this research attempt to fill a research gap in the relationship between separation of ownership and control, as well as the relationship among ownership concentration, firm performance, and determinants of capital structure in one of the emerging markets, Saudi Arabia. This offers an ideal opportunity to examine the determinants of capital structure in an environment free of taxation when comparing family and non-family firms. Saudi Arabia, in particular, has not been the focus of any such study, especially regarding agency costs in family-controlled firms. The present study, therefore, will provide new insights which will contribute to greater understanding of the concept of agency costs.Chapter five of this study will examine the relationship between board mechanisms (board size, family member as a (CEO family) and CEO/Chair non-duality), ownership concentration, managerial ownership, agency costs, and firm performance (ROA, Tobin’s Q, and stock market return). The results of this study reveal that board mechanisms, managerial ownership, and agency costs affect firm performance, while ownership concentration has no affect on firm performance. In chapter six, “Determinants of Capital Structure”, the study identifies a significant difference between the capital choices of family and non-family Saudi firms. Overall, there is a difference between family and non-family firms’ performance and determinants of capital structure.This study was implemented through a quantitative approach. Secondary data obtained from published annual financial report data and the DataStream database were analysed to test the impact of agency costs and family ownership on firm performance and the determinants of capital structure. To ensure confidence in these estimates, this thesis uses two-stage least squares (2SLS) to answer the research questions and to address the issues of endogeneity and unobserved heterogeneity. The focus of the investigation was firms listed on the Saudi Stock Market Exchange (SSE). The dataset is a panel of all firms on the SSE from 2006-2013, excluding financial firms. This study is important because the problem of agency costs has not previously been studied in the Saudi context, so this study will contribute to understanding agency theory in family businesses. It will have a practical benefit for firms, addressing government problems, and the stock exchange in Saudi Arabia

Challenges of continuing medical education in Saudi Arabia's hospitals

Phd ThesisBackground Health care professionals are responsible for maintaining their proficiency throughout their careers. Continuing medical education (CME) is an integral part of the medical profession that aims to enhance physicians’ knowledge and skills. Health care services in Saudi Arabia are expanding rapidly. However, the country is struggling to cope with a shortage of competent health professionals. CME in the Kingdom is facing some challenges that are preventing learning programmes from responding appropriately to professionals’ demands and needs, and to the complexity of health care. Research questions The research questions addressed in this thesis are: 1. What is the current status of continuing medical education in Saudi Arabian governmental hospitals? 2. What are the barriers preventing continuing medical education from implementing competitive learning programmes? 3. How might Saudi culture be influencing the health context and how does this impact upon the field of CME? Methodology This study adopted a mixed methods approach supplemented by ethnography. Two forms of individual, semi-structured interviews targeted two groups of respondents; the interviews were followed up by a questionnaire (sent by email) listing all the challenges to CME identified by the interviewees, and asking the participants to rank them in order of importance. In addition, observation was conducted throughout the fieldwork. Sampling Three public hospitals were selected from different geographical areas (N=3). Judgemental approach resulted in the selection of 33 medical education representatives from different medical and paramedical departments (N=33). Purposive sampling resulted in the selection of 11 medical librarians (N=11). Results The major CME challenges were identified and grouped into four themes: 1. Management, including the lack of knowledge on the part of decision makers about the importance of lifelong learning, and their influence over learning programmes. 2. Poor status of medical libraries, in terms of location, space and services provided. 3. Lack of transparency in the CME budget, which leads to a too close relationship between the pharmaceutical industry and physicians. 4. Diversity of staff, including their different training backgrounds, and their resistance to making changes in their performance after training. Discussion and conclusions The study found a strong correlation between health stakeholders’ lack of managerial skills and knowledge of the significance of CME and the learning programme limitations in Saudi Arabia; this factor also received the highest ranking by the participants in the study. 3 Hospital officials lack the necessary knowledge about the importance of CME, and lifelong learning has become complex. Their negative attitude towards learning has resulted in several challenges: some of these have been identified in this study, including a lack of support for the learning process in hospitals, an inability to motivate staff to continue developing their skills, and a lack of transparency when allocating budgets to learning elements, including CME and library services. This ambiguity has resulted in poor libraries and a heavy reliance on pharmaceutical industry sponsorship for CME events and medical professionals’ trips, which can affect the quality of the events and/or cause bias. The study has also clarified the issue of staff diversity. Although the majority of health care professionals are foreigners, the concern is that health care stakeholders are recruiting professionals from developing countries where the quality of health care and training might be low. Despite the varied training and educational backgrounds among the staff, no efforts have been made to design learning programmes that meet their actual and wide-ranging needs. Rather, current activities are based on desires and wishes of chiefs of medical departments.The Government of Saudi Arabia

The pattern of Middle East respiratory syndrome coronavirus in Saudi Arabia: a descriptive epidemiological analysis of data from the Saudi Ministry of Health

Purpose: This study describes the epidemiology of Middle East respiratory syndrome coronavirus (MERS-CoV) in Saudi Arabia. Patients and methods: Epidemiological analysis was performed on data from all MERS-CoV cases recorded by the Saudi Ministry of Health between June 6, 2013 and May 14, 2014. The frequency of cases and deaths was calculated and adjusted by month, sex, age group, and region. The average monthly temperature and humidity of infected regions throughout the year was also calculated. Results: A total of 425 cases were recorded over the study period. The highest number of cases and deaths occurred between April and May 2014. Disease occurrence among men (260 cases [62%]) was higher than in women (162 cases [38%]), and the case fatality rate was higher for men (52%) than for women (23%). In addition, those in the 45–59 years and ≥60 years age groups were most likely to be infected, and the case fatality rate for these people was higher than for other groups. The highest number of cases and deaths were reported in Riyadh (169 cases; 43 deaths), followed by Jeddah (156 cases; 36 deaths) and the Eastern Region (24 cases; 22 deaths). The highest case fatality rate was in the Eastern Region (92%), followed by Medinah (36%) and Najran (33%). MERS-CoV infection actively causes disease in environments with low relative humidity (<20%) and high temperature (15°C–35°C). Conclusion: MERS-CoV is considered an epidemic in Saudi Arabia. The frequency of cases and deaths is higher among men than women, and those above 45 years of age are most affected. Low relative humidity and high temperature can enhance the spread of this disease in the entire population. Further analytical studies are required to determine the source and mode of infection in Saudi Arabia

Incidence rate of ovarian cancer cases in Saudi Arabia: an observational descriptive epidemiological analysis of data from Saudi Cancer Registry 2001–2008

Purpose This study provides descriptive epidemiological data, such as the percentage of cases diagnosed, crude incidence rate (CIR), and age-standardized incidence rate (ASIR) of ovarian cancer in Saudi Arabia from 2001–2008. Patients and methods A retrospective descriptive epidemiological analysis of all ovarian cancer cases recorded in the Saudi Cancer Registry (SCR) from January 2001–December 2008 was performed. The data were analyzed using descriptive statistics, analysis of variance tests, Poisson regression, and simple linear modeling. Results A total of 991 ovarian cancer cases were recorded in the SCR from January 2001–December 2008. The region of Riyadh had the highest overall ASIR at 3.3 cases per 100,000 women, followed by the Jouf and Asir regions at 3.13 and 2.96 cases per 100,000 women. However, Hail and Jazan had the lowest rates at 1.4 and 0.6 cases per 100,000 women, respectively. Compared to Jazan, the incidence rate ratio for the number of ovarian cancer cases was significantly higher (P<0.001) in the Makkah region at 6.4 (95% confidence interval [CI]: 4.13–9.83), followed by Riyadh at 6.3 (95% CI: 4.10–9.82), and the eastern region of Saudi Arabia at 4.52 (95% CI: 2.93–6.98). The predicted annual CIR and ASIR for ovarian cancer in Saudi Arabia could be defined by the equations 0.9 + (0.07× years) and 1.71 + (0.09× years), respectively. Conclusion We observed a slight increase in the CIRs and ASIRs for ovarian cancer in Saudi Arabia from 2001–2008. Riyadh, Jouf, and Asir had the highest overall ASIR, while Jazan and Hail had the lowest rates. Makkah, Riyadh, and the eastern region of Saudi Arabia had the highest incidence rate ratio for the number of ovarian cancer cases. Further analytical studies are required to determine the potential risk factors of ovarian cancer among Saudi women