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OALib Journal期刊

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The Effect of Board of Directors Characteristics on Firm’s Financial Performance: An Empirical Study on the Most Active Firms in the Egyptian Stock Exchange  [PDF]
Ashraf Mohamed Abdel Atty, Mohamed Moustafasoliman, Amr E. Youssef
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104993
Abstract:
This paper seeks examining the effect of Board of Directors Characteristics on firm’s financial performance in Egypt, using a sample of 50 more active Egyp-tian companies listed on the Egyptian Stock Exchange of the non-financial sector covering the period of three financial years from 2012 to 2017. Board of Directors Structure is represented by CEO Duality, Board Size, Board Meet-ings, Independence board members and Gender Diversity. Return on Assets (ROA), Return on Equity (ROE) and Tobin’s Q is used as a proxy for Firm fi-nancial Performance. In this research, correlation and regression analysis are used to examine the relationship between Corporate Governance and firm’s fi-nancial performance.
The Effects of Residual Blood of Carcasses on Poultry Technological Quality  [PDF]
Bourbab Mohamed, Idaomar Mohamed
Food and Nutrition Sciences (FNS) , 2012, DOI: 10.4236/fns.2012.310181
Abstract: The objective of this work is to show the effect of residual blood on the quality of chicken meat, work based on the hypothesis that increasing the concentration of residual blood would explain the observed quality degradation by several authors. Lots of chickens are killed with two different types of slaughter: Slaughter without stunning for a maximum flow of blood or bleeding perfect PS, shooting seals slight lead to keep almost all blood from the carcass or bleeding IS flawed. To prove the residual blood factors that are responsible for high pHu level and high values of (L* A* B*) in poultry, this study compares the pHu level and values of (L* A* B*) in poultry both perfectly and imperfectly bled. Samples from imperfectly bled carcasses show a high value average number of A* = 12.68 and B* = 16.85; and L* = 54.09 VS the average number of A* = 8.50 and B* = 14.43 and L* = 50.27. At 3℃ storage temperature, the average pHu of perfectly bled poultry was (5.7) which was significantly (P < 0.01) lower than the average pHu of imperfectly bled poultry (6.08). At 7℃ storage temperature, the average pHu of perfectly bled poultry was (6.07) which was significantly (P < 0.05) lower than the average pHu of imperfectly bled one (6.27). We found out the effect of season on the results of pHu measures, so we conducted aanalysis of pHu in summer and winter. Residual blood of the poultry is responsible for high values of (L* A* B*) and high values of pHu therefore the deterioration of the poultry Colour.
Impact profenophos (pesticide) on infectivity of Biomphalaria alexandrina snails with schistosoma mansoni miracidiaand on their physiological parameters  [PDF]
Ragaa Mohamed
Open Journal of Ecology (OJE) , 2011, DOI: 10.4236/oje.2011.12005
Abstract: Profenophos is an organophosphorus pesticide which are used effectively against cotton insects and mites.The present work was carried out to evaluate the molluscicidal activity of pesticides (Profenophos) against Biomphalaria alexandrina snails. Also, the effect of sublethal concentrations of pesticide on the infection of B. alexandrina with Schistosoma mansoni and some enzymes of energy metabolism were studied. The results showed that the infection of B. alexandrina with schistosoma mansoni was greatly reduced after exposure to LC0, LC10, LC25 of pesticide and also, reduction in number of cercariae per snail during the patent period and in the period of cercarial shedding. The present study indicated that the increase in levels of aminotransaminases, acid phosphatase and alkaline phosphatases enzymes in haemolymph and soft tissue of snails and the activity level of lactate dehydrogenase, hexokinase and pyruvatekinase was also significantly reduced in response to treatment.
The Impact of the Imitation and Innovation Marketing in Services the Case of the Banks and Insurance  [PDF]
Mohamed Cherchem
Technology and Investment (TI) , 2012, DOI: 10.4236/ti.2012.32008
Abstract: Under current conditions of competition, it becomes more and more risk for a bank or an insurance company not to innovate. Customers expect a steady stream of new products and services [1-3]. The competition will certainly do its best to satisfy those desires. Continuous innovation is the only strategic choice to avoid loss of market share, many studies claim that the prosecution and the blind imitation of competitors and neglect of clients are the underlying reasons for many failures of new financial products [4,5]. This paper presents a framework for innovation in financial services and the consequences of imitation in terms of innovations in financial services. The study was conducted in two parts: the first part focuses on the concepts of innovation in services and the creative process and the implications as well as marketing and organizational success factors and causes of failures of new banking products and services and insurance, through a guide 26 maintains direct interview questions to each manager (regional directors) of banking and insurance. This paper proposes to shed light on this issue.
Stability and flocculation of nanosilica by conventional organic polymer  [PDF]
Mohamed Bizi
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.46052
Abstract: More than 2,000,000 tons of silica nanoparticles (NPs) are produced annually in the world to cover the needs of nanotechnologies. Inevitably, a quantity of NPs, will be in industrial discharges and domestic, or even in water resources. Share their high surface reactivity, these NPs may also carry with them through a specific adsorption of other toxic chemical pollutants inherent to the industrial sectors. To preserve public health and the environment from this pollution, it is necessary to remedy the potential pollution. In this context, the main motivation of this work is to answer this environmental issue by proposing a scheme of remediation based on the use of a conventional treatment process. The process of elimination nanoparticles by coagulation/flocculation was selected for its simplicity and also for its universal use. The NPs of industrial silica S30R50 were used as support to develop the process. The optimization of coagulation/flocculation, was greatly facilitated by the use of laser diffraction online. This technique allowed to follow the dynamic character of the treatment and to determine the size and the most relevant textural parameters (density, porosity and fractal dimension) of the flocs depending on the nature of the used reagents. The critical concentrations of different coagulants and flocculants used were determined by electrophoresis and turbidity. The ratio of their charge density/molecular weight has conditioned the quality of separation, the floc size and their texture. Excellent coagulation/flocculation performances are reached using organic reagents authorized by the Directorate General for Health of several countries. After optimization of the process, the size distributions are between 10 μm and 1 mm, with fractal dimensions (compactness) ranging from 2.3 to 2.5. The performances obtained show that the use of cationic polymers is a promising potential route to treat other types of NPs. The treatment proposed to reach a ratio of average diameters dFloc/dNP of 3500, and therefore it facilitates the elimination of these NPs agglomerated by filtration.
Investigation of Ground Frequency Characteristics  [PDF]
Mohamed Nayel
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2013, DOI: 10.4236/jemaa.2013.58050
Abstract:

Four-electrode method is one of the well-known methods in measuring ground resistivity. But, most faults currents and lightning currents have high frequencies components. It is proposed to develop this method to study ground frequency characteristics. A step like current was injected into ground to measure the ground impedance. The ground impedance is assumed to be frequency dependent parallel resistance/capacitance. Two equations were proved to estimate ground resistivity and permittivity from four-electrode method. An analytical model was proposed to model studied cases. The four electrodes are divided to equal spheres and complex image method had been used to satisfy the boundary conditions and penetration depth effects. The calculated results show good agreement with the measured results.

A Comparison of Several Performance Dashboards Architectures  [PDF]
Mohamed Abdelfattah
Intelligent Information Management (IIM) , 2013, DOI: 10.4236/iim.2013.52005
Abstract:
A performance dashboard is a full-fledged business information system that is built on a business-intelligence and data- integration infrastructure. It has been one of the most hot research topics. Now many corporations have involved in the performance dashboard Architectures related techniques and many performance dashboard Architectures have been put forward. This is a favorable situation to study and application of performance dashboard related techniques. Though interesting, there are also some problems for so many Architectures forms. For to a novice or user with little knowledge about performance dashboard Architectures, it is still very hard to make a reasonable choice. What differences are there for different performance dashboard Architectures and what characteristics and advantages each has? To answer these problems, the characteristics, architectures and applications of several popular performance dashboard Architectures are analyzed and discussed in detail. From the comparison of these Architectures, users can better understand the different performance dashboard Architectures and more reasonably choose what they want.
Towards Energy Conservation in Qatar  [PDF]
Mohamed Darwish
Open Journal of Energy Efficiency (OJEE) , 2013, DOI: 10.4236/ojee.2013.24023
Abstract:

Qatar energy consumptions are among the highest in the world, and can easily serve double the present population. Energy conservation is a must, as the energy resources are finite, and their consumptions are increasing at alarming rates. The country depends on desalted seawater, which consumes extensive amounts of energy, and is produced by using the least energy efficient desalting system. The desalination process is vulnerable to many factors, and strategic water storage needs to be built. The high energy consumptions are ruining the air and marine environments. Several suggestions are introduced to conserve energy in the Cogeneration Power Desalting Plants (CPDP), by moving to replace the Multi Stage Flash (MSF) desalting system by the energy efficient Seawater Reverse Osmosis System (SWRO); fully utilizing the installed power capacity to desalt water in winter, when electric power load is low, and during summer non-peak hours for strategic water storage; and modifying the simple Gas Turbines (GT) Power cycle plants to GT combined cycle to raise the Electric Power (EP) generation efficiency (to about 50%).

The Relativistic Mechanic Theory of the String  [PDF]
Mohamed Salem
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.64040
Abstract: In this article, a novel speculative method is used to derive the relativistic mechanic that governs the motion of the vibrating string within the compactified-dimensions spacetime. This mechanic claims that the relativistic mechanic of the special relativity should be only valid for the motion within the familiar four-dimensional spacetime. However, our novel mechanic is valid for the motion within the compactified-dimensions spacetime predicted by the string theory. The equations of this new mechanic show that the vibrating string can move within the compactified dimensions in a speed that is faster than light. It is also shown that this new relativistic mechanic goes to the classical Newtonian mechanic whenever the speed of the vibrating string is much less than the speed of light. Since the proposed mechanic does not prohibit the existence faster than light motion, it may uncover some of the mysteries regarding the string theory, such as the existence of tachyon and time travel. The main goal of this paper is to show that the motion within the compactified-dimensions spacetime obeys a different relativistic mechanic that will provide a startling and revolutionary perspective on the universe and answer some of the fundamental questions posed in the modern physics.
Palm Vein Authentication Based on the Coset Decomposition Method  [PDF]
Mohamed Sayed
Journal of Information Security (JIS) , 2015, DOI: 10.4236/jis.2015.63020
Abstract: The palm vein authentication technology is extremely safe, accurate and reliable as it uses the vascular patterns contained within the body to confirm personal identification. The pattern of veins in the palm is complex and unique to each individual. Its non-contact function gives it a healthful advantage over other biometric technologies. This paper presents an algebraic method for personal authentication and identification using internal contactless palm vein images. We use MATLAB image processing toolbox to enhance the palm vein images and employ coset decomposition concept to store and identify the encoded palm vein feature vectors. Experimental evidence shows the validation and influence of the proposed approach.
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