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Technology Transfer of Aircraft Actuation to Marine and Propulsion
Fawaz Yahya Annaz 대한기계학회 2007 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.21 No.6
The most fundamental concept in designing multi-lane smart electromechanical actuation systems, besides meeting performance requirements, is the realization of high integrity. The main aim of this paper is to discuss fundamental consolidation designs and monitoring schemes in different architectures and to address threshold settings methodologies, inherent randomness, lane equalization, and control strategy. The analysis is based on a 4-lane actuation system capable of driving aerodynamic and inertial loads (with 2 lanes failed) of an aileron control surface similar to that of the Sea Harrier.
Monitoring in Smart multi-Lane Torque Summed Electromechanical Actuators
Fawaz Y. Annaz 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
High integrity in multi-lane smart electromechanical actuation systems is achieved through hardware redundancy and intelligent monitoring. The main aim of this paper is to address cross-monitoring in Single-Type torque-summed architecture. The paper will consider hardware cross-monitoring, in three-phase equivalents that represent the brushless dc motor in this architecture, hence allowing for detailed motor and power conditioner failure related tests. The presented analysis is based around a 4-lane actuation system capable of driving aerodynamic and inertial loads (with 2 lanes failed) of an aileron control surface similar to that of the Sea Harrier. The paper will start by giving a brief history of major contributions to state of the art actuation systems. Then the paper will proceed in describing the lanes and the dedicated embed microprocessor/s performing control and comprehensive monitoring tasks. The paper will describe a hardware-cross monitoring technique evaluating local response to failures and their impact on the overall aircraft response in roll and roll rate. The paper will conclude that the current design meets the local and global system requirements.
만성질환 클러스터링을 위한 서비스 지향형 PACS-Grid
( Fawaz Al Hazemi ),송혜원 ( Hyewon Song ),윤찬현 ( Chan-hyun Youn ),김병상,김영헌 ( Younghun Kim ),진광자 한국정보처리학회 2010 한국정보처리학회 학술대회논문집 Vol.17 No.1
본 논문에서는 전산화 및 통합된 환경에서 의료정보처리 요구사항을 만족시키기 위하여 만성질환 클러스터링 기법을 제안하고, 이를 서비스 지향형 PACS-Grid 플랫폼에 적용하여 그 성능을 평가한다. 마지막으로 제안된 시스템 형상이 기존의 PACS-Grid 보다 데이터 처리 성능이 개선되었음을 보여준다.
Extended Kepler Grid-based System for Diabetes Study Workspace
( Fawaz Al Hazemi ),( Chan-hyun Youn ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.1
Chronic disease is linked to patient’s’ lifestyle. Therefore, doctor has to monitor his/her patient over time. This may involve reviewing many reports, finding any changes, and modifying several treatments. One solution to optimize the burden is using a visualizing tool over time such as a timeline-based visualization tool where all reports and medicine are integrated in a problem centric and time-based style to enable the doctor to predict and adjust the treatment plan. This solution was proposed by Bui et. al. [2] to observe the medical history of a patient. However, there was limitation of studying the diabetes patient’s history to find out what was the cause of the current development in patient’s condition; moreover what would be the prediction of current implication in one of the diabetes’ related factors (such as fat, cholesterol, or potassium). In this paper, we propose a Grid-based Interactive Diabetes System (GIDS) to support bioinformatics analysis application for diabetes diseases. GIDS used an agglomerative clustering algorithm as clustering correlation algorithm as primary algorithm to focus medical researcher in the findings to predict the implication of the undertaken diabetes patient. The algorithm was Chronological Clustering proposed by P. Legendre [11] [12].
Taif Fawaz AlNojaidi,Sultan Nasser Alaqil,Abdullh Zafer AlQhtani,Abdulmajeed Saad Alhadlaq 대한미용성형외과학회 2023 Archives of Aesthetic Plastic Surgery Vol.29 No.1
Background Plastic surgery is considered one of the most competitive specialties globally. In Saudi Arabia, it was established in 2001 in the central province (Riyadh) and then expanded in 2009 to include more eastern and western provinces. Previous research has identified several factors that impact pursuing a career in plastic surgery. Methods This cross-sectional study was conducted through a five-page, five-section questionnaire distributed among senior medical students and interns using online platforms between August 2021 and January 2022. The overall number of questions was 25, which tackled different aspects, including sociodemographic characteristics (i.e., age and gender); the duration of the elective rotation; supervisor during the elective; encouraging, discouraging, and influencing factors; and the rating of participants’ desire to become a plastic surgeon. Results After elective training, the most common factor that influenced medical students to choose a plastic surgery career was exposure to a variety of cases (favorable to agree: 80.4%), followed by involvement in clinical activities (i.e., rounding, clinics, and case presentations) (favorable to agree: 70.6%). On the contrary, the most common factor discouraging students from choosing a plastic surgery career after elective training was plastic surgery being a competitive specialty for matching (favorable to agree: 62.7%), followed by the intense workload (favorable to agree: 56.9%). Conclusions Medical students were more likely than medical interns to explore a career in plastic surgery. Exposure to a variety of cases, inspiring mentors, and a decent amount of time spent in the operating room were the most influential factors.
Alshammari, Fawaz D Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.16
Background: Roles of tobacco and alcohol use in etiology of cancer are well established. Alterationin in P53 have essential roles neoplastic change by preventing genome mutation; the aim of this study was to assess the association between P53 mutation and tobacco and alcohol consumption, as well as to assess the epidemiology of tobacco and alcohol use as risk factors for cancer in the adult population of northern Saudi civilians. Materials and Methods: A cross-sectional survey from October 2014 to January 2015, covering 3,398 adults, was performed. P53 mutation molecular detection was performed for 100 tobacco and alcohol users, usingDNA extracted from buccal cells. Results: Of the 3,398 participants 3,253/3398(95.7%) responded, with a male female ratio of 1.10: 1.00. Out of these, 24.8% had smoked tobacco in their lifetime and 2.7% were consumers of alcoholic beverages. None was identified with any P53 mutation. Conclusions: The prevalence of tobacco smoking among the northern Saudi civilians was relatively high. Females' attitudes in tobacco and alcohol related issues were found to be affected by social stigma. Tobacco and alcohol use has no link to P53 gene mutations.
Sajida Fawaz Hammoudi,Hussein Walid Mreydem,Bayan Tarek Abou Ali,Nada Omar Saleh,Seockhoon Chung,Souheil Hallit,Pascale Salameh 대한신경정신의학회 2021 PSYCHIATRY INVESTIGATION Vol.18 No.9
Objective We aimed to investigate the association of increased smartphone screen time with insomnia, bedtime procrastination, depression, anxiety, body mass index (BMI), and physical activity during the coronavirus disease of 2019 (COVID-19) pandemic.Methods An online survey was performed for university students from all regions of Lebanon during the lockdown. The survey included questionnaires about smartphone screen time, diet, physical activity, psychological symptoms, and bedtime procrastination. We defined 6 hours of smartphone use as critical based on a survey done in United States.Results Among female students, smartphone use duration, physical activity levels, BMI, depression, anxiety, and insomnia severity were significantly higher than in male. When we stratified participants based on 6 hours of smartphone use, females, unhealthy food consumption, insomnia, anxiety, depression, and bedtime procrastination were significantly higher in the group with ≥6 hours of smartphone use. When we divided based on 7 hours, physical activity and body weight also differed between the two groups. Logistic regression analysis revealed that female, overweight, insomnia, and bedtime procrastination were significant predictors of a phone screen time of 7 hours.Conclusion Our findings suggest that adults should be more cautious and responsible when using smartphones and be more concerned about the health-related risks.
Labeling Big Spatial Data: A Case Study of New York Taxi Limousine Dataset
AlBatati, Fawaz,Alarabi, Louai International Journal of Computer ScienceNetwork S 2021 International journal of computer science and netw Vol.21 No.6
Clustering Unlabeled Spatial-datasets to convert them to Labeled Spatial-datasets is a challenging task specially for geographical information systems. In this research study we investigated the NYC Taxi Limousine Commission dataset and discover that all of the spatial-temporal trajectory are unlabeled Spatial-datasets, which is in this case it is not suitable for any data mining tasks, such as classification and regression. Therefore, it is necessary to convert unlabeled Spatial-datasets into labeled Spatial-datasets. In this research study we are going to use the Clustering Technique to do this task for all the Trajectory datasets. A key difficulty for applying machine learning classification algorithms for many applications is that they require a lot of labeled datasets. Labeling a Big-data in many cases is a costly process. In this paper, we show the effectiveness of utilizing a Clustering Technique for labeling spatial data that leads to a high-accuracy classifier.
Alshammari, Fawaz Dabea,Khalifa, Amany M,Kosba, Ayman Ahmed,Khalil, Nuhar A,Ali, Safia M,Hassouna, Mona M,Elawad, Gamal Mohamed,Ginaw, Ibrahim Abdelmajeed,Ahmed, Hussain Gadelkarim Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.7
Background: The aim of this study was to assess cancer awareness among medical students in Saudi Arabia toward tobacco and alcohol use as risk factors. Materials and Methods: A cross-sectional survey from October to December 2014, covering 1200 medical students, was performed. Results: Of the total, 975 (81.25%) responded. The male to female ratio was 1.00:7.125. 96/975 (9.8%) had smoked tobacco in their lifetime, and 51/975 (5.23%) were alcoholic beverage consumers. On asking them whether tobacco smoking and alcohol consumption can cause cancer, only 4/975 (0.4%) and 14/975 (1.43%) answered no for smoking and alcohol, respectively. Conclusions: The prevalence of smoking and alcohol use is very low among medical students, which might be due to high female contribution besides social stigma. The prevalence of second-hand smoke (SHS) was found to be very high in Hail region.