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Search Results: 1 - 10 of 461837 matches for " Aiman A. Ragab "
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The Impact of Ownership Structure on Capital Structure: An Empirical Study on the Most Active Firms in the Egyptian Stock Exchange  [PDF]
Mohamed Fayez, Aiman A. Ragab, Mohamed Moustafasoliman
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105266
This study aims to find the most relative ownership structure related factors of influencing capital structure of top 50 non-financial firms listed in Egyptian exchange from 2012 to 2017. The study found that the hypotheses from one to six that are explaining the relationship between Ownership Structure and Capital Structure are partially supported. Also, the study explaining the effect of Firm Age and Company Size on Capital Structure is partially supported.
Factors Influencing Credit Decision for Lending SMEs: A Case Study on National Bank of Egypt  [PDF]
Ekhaa Boushnak, Mohamed A. Rageb, Aiman A. Ragab, Ahmed M. Sakr
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104996
Small and Medium Enterprises (SMEs) play a vital role in the global economy. It had a major part in creating jobs and as a source of social sta-bility, either there is major contribution for SMEs in Egypt as it faces great economy challenges that need cooperation from all parties. However, access to finance is still one of the greatest obstacles facing SMEs all over the world and prevents them from developing. This research is important to fill the research gap which appears in the limited researches that present main factors adopted by the credit decision maker in Banks for evaluating the SMEs. Purpose of this study is to make a progress for filling the gap through exploring these factors. The research was guided by the following research questions: What are the factors that influence credit decision making for lending SMEs? What framework is available to improve the SMEs lending process in the Egyptian Banks? Case study strategy and Quantitative Methods were adopted. Data was gathered from 313 structured questionnaires answered by credit risk and marketing employees from National Bank of Egypt (NBE). The author tested five hypotheses on the relationship between variables, with the SPSS “Package for the Social Sciences” and AMOS “Analysis of a Moment Structure”. They were utilized to interpret the results. The findings provide evidence that factors, like Owner/Manager Character, Capacity, Firm Capital Size, Credit Bureau Report with the availability and Credibility of Financial statements, had a huge impact on Credit Decision for lending SMEs. From the research results, there was framework designing to enhance the credit risk assessment process, which could decrease the uncertainty and time consuming in the lending decision and it might reflect positively on the national economy development.
The prognostic impact of P wave dispersion in prediction of clinical outcome after percutaneous balloon mitarl valvuloplasty in patients with mitral stenosis and sinus rhythm  [PDF]
Ragab A. Mahfouz, Ashraf E. Dewedar
World Journal of Cardiovascular Diseases (WJCD) , 2013, DOI: 10.4236/wjcd.2013.31014

Objective: The aim of the study was to investigate the impact of P-maximum and P-wave dispersion on the long term clinical outcome after successful percutaneous balloon mitral valvuloplasty (PBMV) in patients with mitral stenosis (MS) and sinus rhythm. Also to test the correlation between P-variables and right ventricular function and pulmonary artery pressure before and after PMBV. Methods: Eighty-five patients undergoing PMBV were enrolled in this study. We evaluated P-maximum, P-minimum and P-wave dispersion before and one month after PBMV. We studied the changes in pulmonary arterial pressure (PAP), left atrial (LA) dimension, mitral diastolic gradient, and mitral valve area, in addition to the changes in right ventricular function utilizing tissue Doppler assessment both before and after PMBV, in addition the role of the P-wave dispersion in predicttion of late cardiac events. Results: There were significant decreases in mean diastolic gradient, PAP, and LA size and significant improvement in right ventricular tissue Doppler indices after PMBV. Ac- company these hemodynamic changes after PMBV. P-maximum and P-wave dispersion were found to be decreased (P < 0.001). Patients developed cardiac events during follow-up had a higher P-maximum and P-dispersion than those without late cardiac events (P < 0.001). Moreover the changes in P-maxi- mum and P-dispersion before and after PMBV in patients with cardiac events were not significant, while P-maximum and P-dispersion significantly (P < 0.002) decreased in patients without events It was revealed with linear regression and correlation analy- sis that the degree of and the changes in P-maximum and P-wave dispersion were correlated with devel- opment of late cardiac events after PMBV, with Cut-off values of ≥62.8 msec for P-wave dispersion and

118 mes for P-maximum.ROC curve showed AUC of 0.919 for P-wave dispersion and 0.913 for P-maximum (P < 0.001). Conclusion: P-wave maximum and dispersion are significantly increased in patients with mitral stenosis. These changes decreased significantly after PMBV. The P-maximum and P-wave dispersion changes were correlated with significant impairment of right dysfunction and the degree of pulmonary artery pressure. P-maximum and P-wave dispersion could be considered as independent predictors of late outcome of patients with MS after successful PMBV (AF, recurrent hospital admission, embolic

Examination and Conservation of Helal El-Beah Mosque, Dakahlia, Egypt  [PDF]
Nabil A. Bader, Ragab Abu El- Hassan
Journal of Building Construction and Planning Research (JBCPR) , 2016, DOI: 10.4236/jbcpr.2016.42007
Abstract: Helal El-Beah mosque in Egypt was built from many different materials as sandstone, bricks and marble. These building materials were in a bad condition due to many degradation factors, mainly ground water and salt weathering, so many deterioration phenomena were appeared as horizontal and vertical cracks, salts, loss of the Islamic decorations in the fa?ade and mihrab (Prayer niche), detachment of the plaster, biological colonization and featured dark of the stone surface. Prior to the conservation intervention, the building materials were characterized to identify their components. Scientific conservation treatment was carried out for the long-term conservation of the mosque. Conservation operations at the mosque included: repairing and roof insulation, wet and dry cleaning, joining of cracked parts and surface consolidating, replacement of the Portland cement plaster with lime plaster, re-cladding the lower part of the interior brick walls with sandstone tiles, replacement and completion of the stone blocks.
Qat Habit in Yemen Society: A Causative Factor for Oral Periodontal Diseases
Aiman A. Ali
International Journal of Environmental Research and Public Health , 2007, DOI: 10.3390/ijerph2007030008
Abstract: The effect of a common habit among Yemeni population on the periodontal status was investigated. This cross-sectional study was done on 2500 Yemenis with mean age 27.01 years (1818 males and 682 females). Among these 1528 were qat chewers and 972 were non-chewers. Detailed questionnaire and pre-designed scoring system for the periodontal status were employed for each case. Study results indicated that out of 972 non-chewers 116(12%) had periodontal pocketing and 18 (1.9%) cases had gingival recession. On the other hand, out of 1528 chewers, 468 (31.8%) had periodontal pockets and 98 (6.4%) with gum bleeding, p<0.05. These effects were found to increase with increased frequency and duration of chewing. It was concluded that habit of qat can cause damage to the periodontal ligament as pocketing and gum recession.
Some Ethical Considerations Regarding Medicalization of Female Genital Mutilation/cutting (Female Circumcision)
R. A. Ragab,Ahmed;
Revista Latinoamericana de Bioética , 2008,
Abstract: according to each society's condition the ethical attitude of the individual may be colored by the attitude of the society. it is therefore not surprising to find what is ethical in one society might not be ethical in another. female genital cutting, as an example, is seen in some societies as a must and something good for the whole community in general and for girls in particular, while in others, it is seen as mutilation and violation of human rights. the practice of female genital cutting is a complex issue that ties the traditional gender roles, superstition, local concepts on health and sexuality, as well as several other social relations. worldwide, an estimated 130 million girls and women have undergone fgc. the current paper examines medicalization of female genital cutting from ethical point of view. the paper discusses the issue in the following themes: definition of the practice, the justifications of the practice, the complications and lastly the ethical reflections. the paper argues that laws that prohibit the practice would not work, without wide socio-cultural change; any effort to eradicate the practice would not succeed.
Compliant to Warfarin Therapy after Mechanical Heart Valve Replacement  [PDF]
Ragab S. Shehata, Ahmed A. Elassal, Ayman A. Gabal
Open Journal of Thoracic Surgery (OJTS) , 2014, DOI: 10.4236/ojts.2014.42009
Abstract: Introduction: Effective anticoagulation depends on demographic factors, patient education, drug knowledge and compliance. The aim of our study is to determine the factors that influence compliance to warfarin in the mechanical valve patient population and its relationship with thrombo-embolic and bleeding events. Patients and Methods: 113 patients underwent mechanical valve replacement (Aortic, mitral or both) at King Abdul-Aziz University Hospital, from 2006 to 2012, patients divided into two groups according to warfarin compliant. Results: 113 patients reviewed in our study, 69 (61.1%) patients found compliant, 36 (31.9%) patients found non compliant, and 8 (7.1%) patients missed. The mean age for all patients was 39.25 y: 76 (67.3%) ware male, 37 (32.7%) were female. Mean age for compliant patients was 40.19 y versus 33.3 y for noncompliant patients with p value 0.017. Male patient less complaint than female with significant 0.01, the mean frequency of follow up was less (32.32 days) in compliant vs. (67.73 days) in non complaint patient. Conclusion: younger age, female gender, Arabic race, assistance at home, education, and single drug use are factors associated with patient compliant, non compliance are associated with higher mortality and valve related complication.
Catalyst Free Synthesis of Pyridine-2,6-bis(2-bromo-propane-1,3-dione) and Pyrdine-2,6-bis(N-arylthiazoline-2-thiones)  [PDF]
Korany A. Ali, Mohamed A. Elsayed, Eman Ali Ragab
Green and Sustainable Chemistry (GSC) , 2015, DOI: 10.4236/gsc.2015.51006
Abstract: We have described herein a catalyst-free preparation method of pyridine-2,6-bis(N-alkylthiazoline-2-thiones) (4a-i) by the reaction of primary amines, CS2, and pyridine-2,6-bis(2-bromo-1,3- dicarbonyl) derivatives (2a-c) in water. Also, we have described a catalyst free, green chemistry protocols to monobromination of pyridine-2,6-bis(2-bromo-1,3-dicarbonyl) derivatives with high yield, using NBS as a brominating agent, that led to eco-friendly isolation and purification proce-dures. Furthermore, we have studied the reactivity of pyridine-2,6-bis(2-bromo-1-methyl-pro- pane-1,3-dione) (2a) towards thiourea to afford 2,6-bis(5-benzoyl-2-aminothiazol-4-yl)pyridine (9).
Subdural Hygroma: Different Treatment Modalities and Clinical Outcome  [PDF]
Mahmoud A. Almenzalawy, Abd Elhakeem A. Essa, Mahmoud H. Ragab
Open Journal of Modern Neurosurgery (OJMN) , 2019, DOI: 10.4236/ojmn.2019.93020
Abstract: Background: Subdural hygroma (SDHy) is a collection of cerebrospinal fluid (CSF) under the dural membrane. It is usually asymptomatic but may alter consciousness. Management is still a matter of controversy (conservative Vssurgical) especially when consciousness is a concern. Aim: To assess the different treatment modalities of SDHy regarding the patients’ characteristics and clinical outcome, finding out the significant differences and the future recommendations. Patients and Methods: In this prospective one-year clinical case study, thirty patients were included. Patients’ sociodemographic and clinical characteristics were analyzed. Fifteen patients were managed conservatively whereas the rest were managed surgically. Outcome was correlated with the patients’ characteristics. Results: Twenty four men (80%) and 6 women (20%). Mean age = 25.2 years old. Hygroma was unilateral in 63.3% and fronto-parietal in 60% of patients. The most frequent concomitant injuries were brain contusions (50%) and subarachnoid hemorrhage (33.3%), respectively. The conservative group was treated symptomatically. The surgical group had burr hole evacuation (12 patients) and subdural peritoneal shunt (3 patients). No statistical significance in outcome in either group, but surgical group showed better outcome (73.3%) than conservative group (53.3%). Younger patients have good outcome (65%) compared to (55.3%) in old patients. Patients with severe GCS showed poor outcome (8/8 patients, 100%), whereas mild and moderate GCS patients showed good outcome (19/22 patients, 86%). Conclusion: SDHy though is a benign lesion its management is a matter of controversy. The decision of surgery is affected by GCS and neurological deterioration. Generally, the surgical option is more favorable but the conservative option should be the role as far as there is no concern on consciousness.
Modified Lagrangian Methods for Separable Optimization Problems
Abdelouahed Hamdi,Aiman A. Mukheimer
Abstract and Applied Analysis , 2012, DOI: 10.1155/2012/471854
Abstract: We propose a convergence analysis of a new decomposition method to solve structured optimization problems. The proposed scheme is based on a class of modified Lagrangians combined with the allocation of resources decomposition algorithm. Under mild assumptions, we show that the method generates convergent primal-dual sequences.
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