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Search Results: 1 - 10 of 461746 matches for " Saeb A. "
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An Improved FPGA Implementation of the Modified Hybrid Hiding Encryption Algorithm (MHHEA) for Data Communication Security
Hala A. Farouk,Magdy Saeb
Computer Science , 2007,
Abstract: The hybrid hiding encryption algorithm, as its name implies, embraces concepts from both steganography and cryptography. In this exertion, an improved micro-architecture Field Programmable Gate Array (FPGA) implementation of this algorithm is presented. This design overcomes the observed limitations of a previously-designed micro-architecture. These observed limitations are: no exploitation of the possibility of parallel bit replacement, and the fact that the input plaintext was encrypted serially, which caused a dependency between the throughput and the nature of the used secret key. This dependency can be viewed by some as vulnerability in the security of the implemented micro-architecture. The proposed modified micro-architecture is constructed using five basic modules. These modules are; the message cache, the message alignment module, the key cache, the comparator, and at last the encryption module. In this work, we provide comprehensive simulation and implementation results. These are: the timing diagrams, the post-implementation timing and routing reports, and finally the floor plan. Moreover, a detailed comparison with other FPGA implementations is made available and discussed.
Studies on the Effects of Turpentine Oil on the Serum Concentration of Lipids and Lipoproteins of Female Rabbits
M Saeb,S Nazifi,A Mirzaei
Journal of Shahid Sadoughi University of Medical Sciences , 2004,
Abstract: Introduction: In order to study the effects of turpentine oil on the concentration of lipids and lipoproteins of rabbit ( as an animal model for human studies )35 healthy female rabbits were chosen and then randomly allocated into 13 groups. Different percents of turpentine oil and other oil compounds like vegetable oil, cholesterol and animal oil were given to each group ( 5 rabbits ) separately or in combination. Methods: Blood serum lipid and lipoprotein levels were analysed using routine laboratory methods. Results: According to the results, treatment with 10% and 20% turpentine oil had a significant decreasing effect on triglyceride, cholesterol, total lipid, VLDL- cholesterol and LDL- cholesterol ( P<0.05 ) and a significant increasing effect on HDL- cholesterol (P0.05). Conclusion: Conclusively, results showed that treatment with turpentine oil has a significant decreasing effect on the levels of serum lipids and lipoproteins (VLDL-cholesterol and LDL- cholesterol ).
Rates of convergence for Renyi entropy in extreme value theory
Ali Saeb
Statistics , 2014,
Abstract: Max stable laws are limit laws of linearly normalized partial maxima of independent identically distributed random variables. Saeb (2014) proves that the Renyi entropy of order b (b > 1) of linear normalized maximum of iid random variables with continuous differentiable density is convergent to the Renyi entropy of order b of the max stable laws. In this paper, we study the rate of convergence result for Renyi entropy for linearly normalized partial maxima.
General extreme value modeling and application of bootstrap on rainfall data - A case study
Ali Saeb
Statistics , 2014,
Abstract: Extreme value theory is concerned with probabilistic and statistical questions related to very high or very low values in sequences of random variables and in stochastic processes. The subject has a rich mathematical theory and also a long tradition of applications in a variety of areas. Among many excellent books on the subject, Coles [2] while the book by concentrates on data analysis and statistical inference for extremes. In this article, we present a case study wherein we model annual maximum yearly rainfall data using the generalized extreme value distribution. Also, we use R software for data analysis and give the R codes in the appendix.
On Renyi entropy convergence of the max domain of attraction
Ali Saeb
Statistics , 2014,
Abstract: In this paper, we prove that the Renyi entropy of linearly normalized partial maxima of independent and identically distributed random variables is convergent to the corresponding limit Renyi entropy when the linearly normalized partial maxima converges to some nondegenerate random variable.
Cottonseed: protein, oil yields, and oil properties as influenced by potassium fertilization and foliar application of zinc and phosphorus
Sawan, Zakaria M.,Hafezb,, Saeb A.,Basyony, Ahmed E.,Alkassas, Abou-El-Ela R.
Grasas y Aceites , 2007,
Abstract: In maximizing the quantity and quality of a crop’s nutritional value in terms of fatty acids and protein, it is necessary to identify the constraints which may affect it and to devise methods of overcoming them through the use of inputs or changes in management practices. Field experiments were conducted during two successive seasons at the Agricultural Research Center, Giza, Egypt, on the cotton cultivar “Giza 86” (Gossypium barbadense L.) to study the effects of potassium fertilization (at 0.0 and 47.4 kg of K ha–1) and foliar application of zinc (at 0.0 and 57.6 g of Zn ha–1, two times, 70 and 85 days after planting, “during square initiation and boll setting stage”) and phosphorus (at 0.0, 576, 1152 and 1728 g of P ha–1, two times, 80 and 95 days after planting) on cottonseed. The application of potassium along with spraying plants with zinc and phosphorus caused an increase in cottonseed yield ha–1, seed index, seed oil content, oil and protein yields ha–1, seed oil unsaponifiable matter and total unsaturated fatty acids (oleic and linoleic). However, those treatments resulted in a decrease in oil acid value, saponification value and total saturated fatty acids. The highest P concentration of 1728 g ha–1 gave the best values of cottonseed yield/ha, seed index, and seed oil and protein yields/ha and oil saponifiable matter. Para maximizar la cantidad y calidad del valor nutricional de una semilla en términos de ácidos grasos y proteínas es necesario identificar los factores que los afectan y proponer métodos que favorezcan los resultados deseados a través de cambios o mejoras en las prácticas utilizadas. Los experimentos se llevaron a cabo en dos campa as sucesivas en el Agricultural Research Center, Giza, Egipto, en el cultivo “Giza 86” (Gossypium barbadense L.) para estudiar los efectos de la fertilización con potasio (a 0.0 y 47.7 kg por ha) y las aplicaciones foliares de zinc (a 0.0 y 57.6 g por ha, dos veces, 70 y 85 días después de la plantación) y fósforo (a 0.0, 576, 1152, y 1728 g por ha, dos veces, 80 y 95 días después de la plantación). La aplicación del potasio junto con la pulverización de las plantas con zinc y fósforo causó un incremento en el rendimiento del algodón, el índice de semilla, el contenido graso, los rendimientos de aceite y proteína, el contenido de materia insaponificable en el aceite y el contenido total de ácidos grasos insaturados (oleico y linoleico). Por el contrario estos tratamientos disminuyeron el índice de acidez, el índice de saponificación y el contenido de ácidos grasos saturados. La mayor concentración de
Cottonseed, Protein, Oil Yields and Oil Properties as Influenced by Potassium Fertilization and Foliar Application of Zinc and Phosphorus
Zakaria M. Sawan,Saeb A. Hafez,Ahmed E. Basyony,Abou-El-Ela R. Alkassas
World Journal of Agricultural Sciences , 2006,
Abstract: In maximizing the yield quantity and quality of a crop in terms of the nutritional value of fatty acids and protein, it is necessary to identify the constraints, which operate at a site and to devise methods of overcoming them through the use of inputs or changes in management practices. Field experiments were conducted during two successive seasons at the Agricultural Research Center, Giza, Egypt, on the cotton cultivar "Giza 86" (Gossypium barbadense L.) to study the effects of potassium fertilization (at 0.0 and 57.1 kg of K2O/ha) and foliar application of zinc (at 0.0 and 60 ppm of Zn, two times, 70 and 85 days after planting, "during square initiation and boll setting stage") and phosphorus (at 0.0, 600, 1200 and 1800 ppm of P2O5, two times, 80 and 95 days after planting) on cottonseed. Application of potassium and spraying plants with zinc and phosphorus caused an increase in cottonseed yield/ha, seed index, seed oil content, oil and protein yields/ha, seed oil unsaponifiable matter and total unsaturated fatty acids (oleic and linoleic). However, those treatments resulted in a decrease in oil acid value, saponification value and total saturated fatty acids. The highest P2O5-concentration of 1800 ppm gave the best values of cottonseed yield/ha, seed index and seed oil and protein yields/ha and oil saponifiable matter.
Cottonseed, Protein, Oil Yields and Oil Properties as Affected by Nitrogen Fertilization and Foliar Application of Potassium and a Plant Growth Retardant
Zakaria M. Sawan,Saeb A. Hafez,Ahmed E. Basyony,Abou-El-Ela R. Alkassas
World Journal of Agricultural Sciences , 2006,
Abstract: Field experiments were conducted in two successive seasons, at the Agricultural Research Center, Giza, Egypt. The aim was to investigate the effect of N-fertilization rate (95.2 and 142.8 kg of N/ha, applied as ammonium nitrate containing 33.5% N in two equal doses at 6 and 8 weeks after sowing), together with foliar application of potassium (applied as potassium sulfate containing 48% K2O at 0.0, 400, 800 or 1200 ppm K2O, applied twice: 70 and 95 days after sowing) and the plant growth retardant (PGR) Pix (applied twice: 75 days after sowing at 0.0 or 50 ppm and 90 days after sowing at 0.0 and 25 ppm) on seed, protein and oil yields and oil properties of Egyptian cotton cultivar "Giza 86 (Gossypium barbadense). The higher N-rate, as well as the application of potassium at different concentrations and plant growth retardant Pix resulted in an increase in cottonseed yield/ha, seed index, seed protein content, oil and protein yield/ha, seed oil refractive index, unsaponifiable matter and total unsaturated fatty acids (oleic and linoleic). Those treatments decreased, though oil acid value, saponification value and total saturated fatty acids. The seed oil content tended to decrease when the high N-rate was applied, but tended to increase with the application of potassium at different concentrations and Pix. There were some differences between potassium concentrations regarding their effects on the studied characters.
Substitution effects of Ag/Cu and Al/Cu on Y123 samples: Hall anomaly and transport properties
M. Nazarzadehmoafi,V. Daadmehr,A. T. Rezakhani,S. Falahati,F. Saeb,S. Barekat Rezaei
Physics , 2011,
Abstract: The Hall effect and its associated anomalies offer an important means for describing superconducting property in cuprate compounds. Here, we investigate the electron- and hole-doping effects (implemented through Al- and Ag-doping, respectively) on the Hall effect and transport properties of Y123 superconducting materials (YBa2Cu3-xXxO7-d; X= Ag, Al). The Hall anomaly, in both normal and vortex states, generally depends on multiple factors, such as temperature, magnetic field, and amount/type of doping. Specifically, for our samples, we observed that hole doping first enhances the critical temperature TC, whereas its excess beyond a threshold value (here x=0.15) decreases TC; electron doping, however, decreases TC. We also show how doping changes the critical current density JC at temperature 77K with magnetic field 9kOe. More importantly, all of our samples exhibited one Hall sign reversal. Interestingly, behavior of the Hall coefficient vs. temperature reveals that the Hall dip vs. magnetic field for Ag - doped samples shows a behavior opposite to that for Al-doped samples.
Can Country Image Change after Likable Incident? The Case of Chile Miners’ Rescue Operation and the Middle East Consumers
Saeb Farhan Al Ganideh
International Business Research , 2012, DOI: 10.5539/ibr.v5n3p100
Abstract: Country image plays a key role in influencing consumers’ perceptions towards products originating from foreign countries. Economic and commercial relations between countries in the Middle East region and South America have improved strongly in the last decade. However, there is a dearth of studies conducted in the Middle East countries regarding products sourced from South American countries. This study aims to explore how Chile miners’ rescue operation has been perceived by Jordanians and how it has influenced the country image of Chile. The study examines the influence of demographic variables and openness to other cultures on the attitudes of Jordanian consumers towards Chile miners’ rescue operation. A survey was conducted in the spring of 2011 to collect data from Jordanian consumers. Data were collected from 154 Jordanian customers. The results showed that Chile miners rescue operation has been admired most by Jordanian consumers who live in the capital of the country and by Jordanians who are more opened to other cultures.
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