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Search Results: 1 - 10 of 154425 matches for " Karim F. F. Mohamed "
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Evaluating the Relationship between the Banking System Stability and the Internal Capital Adequacy Assessment Process: Evidence from the Egyptian Banking Sector  [PDF]
Karim F. F. Mohamed
Journal of Financial Risk Management (JFRM) , 2018, DOI: 10.4236/jfrm.2018.74020
Abstract: In the repercussions of the latest financial crisis that have occurred on the years 2008-2009, to fortify the stability of the banking systems, policy makers, and the Basel Committee on Banking Supervision—BCBS, together with national regulators have built up a few safety measures, and structures to guarantee that banks establishments keep up adequate capital levels through using risk management tools, in specific the Internal Capital Adequacy Assessment Processes (ICAAP). They all have called for thorough evaluations and assessments for the structure and components of risk management frameworks, tools, and practices whether by banks, regulators, analysts and risk management experts consistently, to ascertain the adequacy of the banking systems, policies, arrangements and techniques for overseeing risks, and guaranteeing the sufficiency of holding appropriate capital levels for confronting normal, as well as adverse and unexpected situations or emergencies. The main objectives of this research study are to shed the light on the ICAAP as one of the main keys of risk management programs, a process by which banks can use to ensure that they operate with an appropriate level of capital, forward looking processes for capital planning covering a broad range of risks across banks, activities beyond simple capital management, and bring together risk and capital management activities in a form that can be used to support business decisions. The research study shall evaluate the significant relationship between the Banking System Stability (dependent variable) and the Internal Capital Adequacy Assessment Process (ICAAP—independent variable) with evidence from the Egyptian Banking Sector.
The Propagation of Circularly Polarized Waves in Quantum Plasma  [PDF]
Bahaa F. Mohamed, Rehab Albrulosy
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.42033
Abstract:

The quantum effects on the propagation circularly polarized waves have been investigated in electron magnetized quantum plasmas. We obtain the dispersion equations of the propagation of circularly polarized laser beam through cold plasma. The results show that the laser can be propagated due to the quantum effects which enhance the propagation phase velocity. For this purpose, the quantum hydrodynamic (QHD) equations with magnetic field and Maxwell’s equations system is used to derive these dispersion relations. The perturbed electron density and current due to the interaction of laser beam with quantum plasma have been investigated. It is shown that the external magnetic field which is parallel to the propagation waves has strong effect on the dispersion relation for the laser propagation in quantum model than the classical regime.

High-Frequency Electrostatic SW at the Boundary between Quantum Plasma and Metal  [PDF]
Bahaa F. Mohamed, Rehab Albrulosy
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.43044
Abstract:

It is shown that high-frequency electrostatic surface waves (SW) could be propagated at right angles to an external magnetic field on the boundary between metal and gaseous plasma due to a finite pressure electron gas in quantum plasma by using the quantum hydrodynamic QHD equations. The dispersion relation for those surface waves in uniform electron plasma is derived under strong external magnetic field. We have shown that the electrostatic surface waves exist also in the frequency for the ranges where electromagnetic SW is impossible. The surface plasma modes are numerically evaluated for the specific case of gold metallic plasma at room temperature. It has been found that dispersion relation of surface modes depends significantly on these quantum effects (Bohm potential and statistical) and should be into account in the case of magnetized or unmagnetized plasma.

No short-cut in assessing trial quality: a case study
Karim F Hirji
Trials , 2009, DOI: 10.1186/1745-6215-10-1
Abstract: The general verdict from the check list type evaluations in nine relevant systematic reviews was that Burke et al. (1991) is a good quality trial. All relevant meta-analyses extensively used its data to formulate therapeutic evidence. My comprehensive evaluation, on the other hand, brought to the surface a series of serious problems in the design, conduct, analysis and report of this trial that were missed by the earlier evaluations.A check-list or instrument based approach, if used as a short-cut, may at times rate deeply flawed trials as good quality trials. Check lists are crucial but they need to be augmented with an in-depth review, and where possible, a scrutiny of the protocol, trial records, and original data. The extent and severity of the problems I uncovered for this particular trial warrant an independent audit before it is included in a systematic review.Clinical trials of poor quality continue to be reported in virtually all medical fields [1-6]. Assessing the quality of a trial is thereby essential, both for judging the reliability of its conclusions, and for including it into a systematic review. Due effort has, accordingly, been spent on developing appropriate instruments for the task. A 1999 overview found 25 different check lists for evaluating the quality of a clinical trial [7-10].Several concerns about trial quality check lists have, however, emerged. One, they vary appreciably in terms of the number and types of components. Two, the weight they accord to the components differs markedly. And three, some lists have items unrelated to assessing bias, or generalizability of trial findings. The earlier use of quality scores as weights in a meta-analysis, or for quality ranking of trials is no longer advised. Recent work has sought to identify the components of quality that often or strongly affect trial outcomes. The findings show that adequate allocation concealment is a key component for all types of trials while the importance of the extent of b
Chemically Modified Carbon Paste Electrode for Determination of Cesium Ion by Potentiometric Method  [PDF]
Refat F. Aglan, Gehad G. Mohamed, Hala A. Mohamed
American Journal of Analytical Chemistry (AJAC) , 2012, DOI: 10.4236/ajac.2012.38076
Abstract: A new chemically modified carbon paste electrode for cesium(I) ion determination based on potassium zinc hexacyan-oferrate (PZHCF) as an ionophore was prepared. The electrode exhibits a Nernstian response for Cs(I) ions over a wide concentration range from 1 × 10-6 to 1 × 10-1 mol·L-1 with a slope of 58 ± 0.5 mV·decade-1. It has a response time of about 35 s and can be used for a period of 3 months with good reproducibility. Detection limit obtained in the optimal conditions was 3 × 10-7 mol·L-1. The potentiometric response is independent of the pH of the solution in the pH range 4.0 - 8.0. The electrode possesses the advantages of low resistance, fast response over a variety of other cations. The proposed electrode is applied as a sensor for the determination of Cs(I) ion concentration in different samples solutions. The results showed a good correlation with the data obtained by atomic absorption spectrometric method.
DARM: Decremental Association Rules Mining  [PDF]
Mohamed Taha, Tarek F. Gharib, Hamed Nassar
Journal of Intelligent Learning Systems and Applications (JILSA) , 2011, DOI: 10.4236/jilsa.2011.33019
Abstract: Frequent item sets mining plays an important role in association rules mining. A variety of algorithms for finding frequent item sets in very large transaction databases have been developed. Although many techniques were proposed for maintenance of the discovered rules when new transactions are added, little work is done for maintaining the discovered rules when some transactions are deleted from the database. Updates are fundamental aspect of data management. In this paper, a decremental association rules mining algorithm is present for updating the discovered association rules when some transactions are removed from the original data set. Extensive experiments were conducted to evaluate the performance of the proposed algorithm. The results show that the proposed algorithm is efficient and outperforms other well-known algorithms.
Fatigue Crack Growth on Double Butt Weld with Toe Crack of Pipelines Steel  [PDF]
Féthi Hadjoui, Mustapha Benachour, Mohamed Benguediab
Materials Sciences and Applications (MSA) , 2012, DOI: 10.4236/msa.2012.39085
Abstract: The welded structures have a broad applicability (car industry, aeronautical, marine, pipelines, etc.). The welding being an assembled process, presents both advantages and disadvantages. A simple existing defect after welding can generate a catastrophic fracture. This work studies the fatigue crack growth of double butt weld with toe crack. Two types of pipeline material are studied with knowing API 5L grades X60 and X70 where tension form of loading is applied. In order to predict the fatigue behavior of the welded structure, a constant amplitude loading is applied where the influence of the stress ratio over the fatigue life is presented.
Effect of Carrot and Pumpkin Pulps Adding on Chemical, Rheological, Nutritional and Organoleptic Properties of Ice Cream  [PDF]
Mohamed F. Y. Hassan, Hassan Barakat
Food and Nutrition Sciences (FNS) , 2018, DOI: 10.4236/fns.2018.98071
Abstract: Ice cream manufactured using a substantial amount of pumpkin pulp (PP) and carrot pulp (CP) has a high organoleptic acceptability. PP and CP were added to typical control ice cream (TC) up to 20%. Through adding PP and CP, natural flavor, unique color, and health-promoting constituents were presented. The resultant ice cream was subjected to chemical, rheological, nutritional, and organoleptic properties investigation. Results revealed that dry matter especially SNF in both PPand CP-ice creams were increased significantly. Accordingly, ash, fiber, and available carbohydrates contents were significantly increased whereas opposite result was recorded for crude protein as a result of PP and CP substitution. The ice cream containing high PP and CP contents had higher melting resistance and lower overrun %. Health beneficial phytochemicals such as carotenoids, flavonoids (TF), flavonols (TFL), and vit. C were commonly detected in PP and CP-ice creams, reflecting the attributes of PP and CP ingredients. PP and CP-ice cream had the valuable content of TPC, vit. C and antioxidant capacity. However, only ice cream made with 15% of PP and CP was highly accepted than others. Therefore, it is possible to use a substantial amount from PP and CP to produce ice cream up to 15% with retained much of natural color, unique vit. C, TPC, carotenoids, TF, TFL contents as well as valuable antioxidant capacity. Health beneficial compounds and organoleptic attributes of prepared ice cream formulas were encouragingly the commercial possibility of using PP and CP for scaling up further.
Screenig and Some Properties of Limonoid Glucosyltransferase from Selected Citrus Varieties
M. R. Karim,F. Hashinaga
Pakistan Journal of Biological Sciences , 2001,
Abstract: Limonoid glucosyltransferase (LGTase) is an enzyme in citrus that converts limonoids into corresponding glucosides and eventually reduces limonoid bitterness. Albedo from seven varieties of citrus were screened for this enzyme and its storage properties were examined. The varieties studied were Buntan (Citrus grandis Osbeck), Banpeiyu (C. grandis Osbeck), Natsudaidai (C. natsudaidai Hayata), Ponkan (C. reticulata Blanco), Iyomikan (C. iyo hort.), Meiwa kumkuat (Fortunella crassifolia Swingle) and Hassaku (C. hassaku hort.). Banpeiyu exhibited the highest specific activity followed by Buntan and Iyomikan. Banpeiyu also contained the highest amount of albedo per fruit weight followed by Buntan. Crude enzymes from all the seven varieties showed higher stability in the pH range of 5.5 to 7.5. The enzymes retained the activity up to 1 year as precipitate in ammonium sulfate while the activity lost very rapidly when stored in 10 mM Tris-HCl buffer, pH 7.5 at -20 or -80°C. Storage at 4°C in the same buffer could retain about 60% of enzyme activity only up to 10 days. Saline was the simpler and preferable medium for extraction of the enzyme. Banpeiyu and Buntan were the most suitable varieties for extracting LGTase in terms of saline extractability, specific activity, and stability of the enzyme. The pattern of protein bands in the selected varieties in terms of molecular weight were also compared.
On Dislocated Metric Topology  [PDF]
Mohamed A. Ahmed, F. M. Zeyada, G. F. Hassan
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2013, DOI: 10.4236/ijmnta.2013.24032
Abstract:

In this paper, we give a comment on the dislocated-neighbourhood systems due to Hitzler and Seda [1]. Also, we recover the open sets of the dislocated topology.

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