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Search Results: 1 - 10 of 18723 matches for " Tahani Al-Khatib "
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A Blind DWT-SCHUR Based Digital Video Watermarking Technique  [PDF]
Lama Rajab, Tahani Al-Khatib, Ali-Al Haj
Journal of Software Engineering and Applications (JSEA) , 2015, DOI: 10.4236/jsea.2015.84023
Abstract: Digital watermarking is one of the most powerful tools used in ownership and copyrights protection in digital media. This paper presents a blind digital video watermarking technique based on a combination scheme between the Discrete Wavelet transform in (DWT) and the real Schur Decomposition. The scheme starts with applying twolevel DWT to the video scene followed by Schur decomposition in which the binary watermark bits are embedded in the resultant block upper triangular matrix. The proposed technique shows high efficiency due to the use of Schur decomposition which requires fewer computations compared to other transforms. The imperceptibility of the scheme is also very high due to the use of DWT transform; therefore, no visual distortion is noticed in the watermarked video after embedding. Furthermore, the technique proves to be robust against set of standard attacks like: Gaussian, salt and pepper and rotation and some video attacks such as: frame dropping, cropping and averaging. Both capacity and blindness features are also considered and achieved in this technique.
Fungal Diseases of Olive Cuttings in the Rooting Stage in Jordan
Mahmoud Al-Khatib
Research Journal of Biological Sciences , 2012, DOI: 10.3923/rjbsci.2012.297.301
Abstract: Several olive nurseries in Jordan were surveyed for basal and root rot fungi in olive cuttings during the rooting stage in Summer and Autumn 2011. Causal agents were isolated from symptomatic olive cuttings on PDA and identified according to specific keys. The most frequently isolated fungi were Pythium aphanidermatum followed by Fusarium solani, Rhizoctonia solani and Verticllium dahlia. Pathogenicity tests showed variation in the disease incidence caused by the isolated fungi on olive cuttings from different olive varieties. The highest disease incidence was caused by the fungus P. aphanidermatum on raseei olive variety (47%) were on other olive varieties, incidence ranged between 21 and 26%. The disease incidence caused by each of the other isolated fungi ranged from 11-15% on the different tested olive varieties. Var., raseei was the most affected by both P. aphanidermatum (47%) and composite sample (68%). Analysis of variance showed significant effects of nabali olive variety on disease incidence for the different fungal isolates.
Corky Root Rot of Tomato in Jordan
Mahmoud Al-Khatib
Research Journal of Biological Sciences , 2012, DOI: 10.3923/rjbsci.2011.164.166
Abstract: Corky root rot symptoms caused by Pyrenochaeta lycopersici were observed on roots and stem bases of tomato plants under plastic houses in Jordan. Symptoms included chlorosis of foliage, stunting, root necrosis and poor fruit setting. The isolated fungus from diseased tomato plants formed a gray to dark green mycelium on PDA media with hyaline, uni-cellular cylindrical conidia. The main stem of diseased plants appeared to have cracked lesions along the length of the root with corky appearance. Based on the disease symptoms and morphological characteristics of the isolated fungus and pathogenicity test, Pyrenochaeta lycopersici was identified as the causal agent of the disease. This study seems to be the first study of corky root rot of tomato caused by Pyrenochaeta lycopersici in Jordan.
Hydro-Geochemical Characteristics of Groundwater Beneath the Gaza Strip  [PDF]
Muhammad Al-Khatib, Husam Al-Najar
Journal of Water Resource and Protection (JWARP) , 2011, DOI: 10.4236/jwarp.2011.35043
Abstract: The main objective of the current research is to investigate the deterioration of groundwater quality due to the over-pumping in the coastal area of the Gaza Strip. One hundred and two (102) samples from 44 municipal water wells in the Gaza Strip were collected and analyzed for major cations like, Ca2+ and Mg2+ by Titration, Na+ and K+ by Flame photometer; anions like, Cl- and HCO3- by Titration, NO3- by spectrophotometer and SO42- by turbidity meter. The groundwater in the region mainly consists of NaCl, CaHCO3-and NaHCO3-. The saline load of groundwater is in first place controlled by chloride, sodium and calcium concentrations. The spatial changes of ionic ratios of rCa2+/(rHCO3- +? rSO42-) and the relationship between sodium and chloride in the coastal area indicate that the aquifer experienced sea-water intrusion.
Cooperative Machine Learning Method
Adnan M. Al-Khatib
World of Computer Science and Information Technology Journal , 2011,
Abstract: Cooperative learning refers to an approach where one or more team of learners work together towards reaching a better knowledge or understanding of a specified task. The purpose of this paper is to use this approach to describe a proposal for designing and building a cooperative machine learning system (Multi-Learning system) that contains two or more machine learners that cooperate together. The objective of the proposal in this paper is to improve the effectiveness of the machine learning systems.
Electronic Payment Fraud Detection Techniques
Adnan M. Al-Khatib
World of Computer Science and Information Technology Journal , 2012,
Abstract: In this paper, we discuss the fraudulent transactions that occur in electronic payment systems. We evaluate various techniques that can be used in detecting fraudulent transactions of card-not-present payment systems. The presented evaluation based on the literature, and from our own studies for these techniques. It provides a basis for exploring the common ground between techniques and for analyzing experimental studies and scenarios in practice.
Detect CNP Fraudulent Transactions
Adnan M. Al-Khatib
World of Computer Science and Information Technology Journal , 2011,
Abstract: Money in the e-commerce network, represents information moving at the speed of light, where fraud (digital crime) within the banking and financial services happened very fast and can cost billions of dollars each year-undetected and unreported. In this paper I present a comprehensive framework that mines and detect fraudulent transactions of Card-Not-Present (CNP) in the e-payment systems with a high degree of accuracy.
Determination of Different Trace Heavy Metals in Ground Water of South West Bank/Palestine by ICP/MS  [PDF]
Husam Malassa, Mutaz Al-Qutob, Mahmoud Al-Khatib, Fuad Al-Rimawi
Journal of Environmental Protection (JEP) , 2013, DOI: 10.4236/jep.2013.48096
Abstract:

Heavy metal contamination of the groundwater of south West Bank in Palestine was assessed. The groundwater samples were analyzed for different trace heavy metals (Tl, Pb, Bi, Cr, Mn, Co, Ni, Cu, Zn, Mo, Ag, and Cd), and Al content by ICP/MS. This study was conducted to determine the water quality of ground water which is used for drinking in the study area. Water samples from ten groundwater wells were obtained in four different dates of the year (October 2012, November 2012, March 2013, and April 2013). Three water samples were obtained from each well for each sampling date. A total of 120 water samples were collected from the ten wells. The samples were analyzed for their pH, electrical conductivity, total dissolved solids, and different trace metals content. The pH, electrical conductivity, and total dissolved solids of all water samples were found to be within the US Environmental protection Agency limits. Results showed that Pb, Al, Cr, Co, Ni, Cu, Zn, and Mo were detected in all water samples analyzed in this study, while Tl, Bi, Mn, Ag, and Cd were detected in 80%, 88%, 90%, 75%, and 95% of the water samples analyzed in this study, respectively. In general, 93% of all samples analyzed contained one or more of the 13 metals studied each in varying concentration. Furthermore, results showed that the concentration of Cr, Mn, Ni, Cu, Zn, and Mo is within the allowed WHO limits in drinking water. However the concentration of Pb Cd, and Al are found to be higher than the allowed WHO limits in 40%, 8%, and 33% of the water samples analyzed in this study, respectively. Statistical analyses showed that concentrations of the metals studied in this study vary significantly between the ten ground water wells, indicating that the wells analyzed in this study is different from each other in terms of heavy metal content. Additionally, from the statistical results obtained, it was found that there is a significant difference in the concentration of the metals in each well for the four sampling times (October 2012, November 2012, March 2013, and April 2013), denoting that metal concentration in the wells vary significantly with sampling time. The results obtained from this study suggest a possible risk to the population of the study area given the toxicity of these metals, and the fact that for many people in the study area, ground water is a main source of their water supply.

Assessment of Groundwater Pollution with Heavy Metals in North West Bank/Palestine by ICP-MS  [PDF]
Husam Malassa, Mohamad Hadidoun, Mahmoud Al-Khatib, Fuad Al-Rimawi, Mutaz Al-Qutob
Journal of Environmental Protection (JEP) , 2014, DOI: 10.4236/jep.2014.51007
Abstract:

Groundwater of North West Bank in Palestine was assessed for pollution with trace metals by ICP/MS. The samples were analysed for their pH, electrical conductivity, total dissolved solids, and different trace metals content. The pH, electrical conductivity, and total dissolved solids of all water samples were found to be within the US Environmental protection Agency limits. Results showed that the concentration of nine trace metals (Cr, Mn, Ni, Cu, Zn, Mo, Pb, Cd, and Al) is within the WHO limits in drinking water (50, 500, 20, 2000, 3000, 70, 10, 3, and 200 ug/L, respectively), however six metals of them (Cr, Mn, Ni, Cu, Mo, and Al) were detected in 100% of the samples, while Pb, Cd, and Zn were detected in 80%, 60%, and 20% of the samples, respectively. On the other hand, Tl which is a very toxic heavy metal with allowed WHO limits of 0.01 - 1 ug/L is detected in 100% of the water samples analysed with a range of 0.02 - 0.12 ug/L. It indicates that such concentration levels of Tl would be harmful to the human being drinking the water. In general, 82% of all samples analysed contained one or more of the 12 metals studied each in varying concentration. Results of this study suggest a possible risk to the people of the study area given the toxicity of heavy metals, and the fact that for many people in the study area, groundwater is a main source of their water supply.

Improving TCP Performance of DOCSIS Based Broadband Networks
Wissam Al-Khatib,K. Gunavathi
Information Technology Journal , 2006,
Abstract: Data-Over-Cable Service Interface Specifications (DOCSIS) is developed for data transmissions over cable networks; it is intended to support IP flows with significantly higher data rate links for high quality data, audio, video and interactive services. It is important to provide traffic scheduling mechanisms to support Quality of Service (QoS) for such applications. This study analyses the TCP performance over DOCSIS protocol in HFC broadband networks and also proposes an algorithm to improve the TCP performance. Simulations were in done in ns-2 with simple modification in MAC layer. The result proves that the proposed algorithm have less access delay, good throughput and good channel utilization when compared existing DOCSIS protocol.
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