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A Multiresolution Channel Decomposition for H.264/AVC Unequal Error Protection

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Journal of Signal and Information Processing 2012年第1期3卷 1-15页

作者： Rachid abbadi Jamal El abbadi Département Génie Electrique Ecole Mohammadia des Ingenieurs Rabat Morocco.

The most commonly used transmission channel in nowadays provides the same level of protection for all the information symbols. As the level of protection should be adequate to the importance of the information set, it is justified to use UEP channels in order to protect information of variable importance. Multiresolution channel decomposition has emerged as a strong concept and when combined with H.264/AVC layered multiresolution source it leads to outstanding results especially for mobile TV applications. Our approach is a double multiresolution scheme with embedded constellation modulations on its baseband channels followed by OFDM time/frequency multiresolution passband modulation. The aim is to protect The NAL units carrying the most valuable information by the coarse constellations into coarse sub-channels, and the NAL units that contain residual data by fined constellations and transposed into the fined OFDM sub-channels. In the multiresolution protection coding, our approach is a multiresolution decomposition of the core convolutional constituent of the PCCC where the NAL units carrying the most valuable information are coded by the rugged coefficient of the multiresolution code and the NAL units that contains residual data are coded by refined less secure coding coefficients.

关键词： Multiresolution H264.AVC UEP PCCC Turbo Code

Potential for Safflower Cultivation under Temperate Conditions

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Journal of Agricultural Science and Technology(A) 2012年第12期2卷 1307-1321页

作者： Jehad abbadi Joska Gerendas Biology Department College of Science and Technology Al-Quds University Abu Dies P.O. Box 20002 Jerusalem Palestine Institute for Plant Nutrition and Soil Science University of Kiel Kiel D-24098 Germany

Safflower is a Mediterranean-subtropical oil crop, with temperate climate. To assess the suitability of safflower may have certain production potential in organic farming in regions cultivation under temperate climate in low input organic farming, ten cultivars were grown in two years experiment in Lindhoft-Kiel in Northern Germany in clay/sand soil. Pearson correlations reveal that oil yield exhibited tight positive correlations with plant height, plant dry matter, capitula plant-1, achenes capitulum-1 and thousand achene mass （TAM）, but was not correlated with days to full flowering or oil concentration. Yield component analysis reveals that achenes capitulum1 had the major influence on the variation of oil yield of all studied cultivars, followed by capitula plant1 and TAM, while the oil concentration had slightly negative influence, and the plant density was negatively associated with oil yield. Although two years field experiment is not enough to analyse the performance of safflower adaptability to certain region, it can be concluded that the most adaptive cultivars are PI-209286 originated from Romania, and cultivar CART-19/89 originated from Poland, while the less adaptive cultivars were DO-13/03 and DO-15/03 with German origin in addition to the Canadian cultivar PI-572475/Saffire. The most striking yield component that contributes to the high yield is achene capitulumt, which can be used as a base for selecting cultivars adaptive to humid cold conditions. The growth period between full flowering and harvest influencing this yield component must be given attention to avoid low temperature and rainfall by tuning sowing date to improve yield at these conditions.

关键词： Carthamus tinctorius safflower production organic farming temperate climate adaptation genotype.

Phosphorus Use Efficiency of Safflower （Carthamus tinctorius L.） and Sunflower （Helianthus annuus L.） Studied in Nutrient Solution

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Journal of Agricultural Science and Technology(A) 2012年第11期2卷 1260-1280页

作者： Jehad abbadi Jeska Gerendas Biology Department College of Science and Technology AI-Quds University Abu Dies P.O. Box: 20002 Jerusalem-Palestine Institute for Plant Nutrition and Soil Science University of Kiel Kiel D-24098 Germany

Safflower represents an important oil crop internationally and may have a production potential under low input conditions, but its putatively high phosphorous use efficiency is not sustained. This study aims to directly compare safflower with sunflower in terms of phosphorus use efficiency in nutrient solution under controlled conditions. Growth of both species responded strongly to increasing P supply. Safflower recovers less proportion of added P than sunflower. External P requirement （（g P supply （100 g dry matter （DM） produced）~） was higher in safflower than sunflower. The efficiency of the crops for DM production based on accumulated P （mg P potl, efficiency ratio）, and P concentration in DM （（mg P （g DM）＇I）, utilization index） were interpreted using Michaelis-Menten kinetics as growth response curves. Accordingly, Km constant was lower in sunflower compared to safflower in terms of utilization index, but both were similar in terms of efficiency ratio. High Km constant in safflower in terms of utilization index indicates the high P concentration in tissues to produce 50% of potential maximum DM, consequently less efficient crop. Utilization efficiency contributed more than uptake efficiency in overall PUE in the efficient cultivar and could be the cause of its superiority in PUE. It can be concluded that safflower has a high requirement for P with respect to growth, sunflower is more efficient in terms of uptake and utilization of P at optimal and sub-optimal P supplies indicating that safflower can not be considered a low nutrient input crop compared to sunflower with respect to phosphorus.

关键词： Phosphorous nutrient utilization efficiency yield response curve Carthamus tinctorius Helianthus annuus.

Optimal Spacing Design for Pilots in OFDM Systems over Multipath Fading Channels

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Communications and Network 2010年第4期2卷 221-229页

作者： Youssefi My Abdelkader El abbadi Jamal 不详

In wireless orthogonal frequency division multiplexing (OFDM) systems, the time-varying channel is often estimated by algorithms based on pilot symbols. Such an estimator, however, requires statistical prior knowledge that is not easily obtained. Therefore, the pilot tones have to be close enough to fulfill the sampling theorem. In this case the statistical knowledge of the channel is not required to reconstruct correctly the channel impulse response (CIR). This paper explores the optimal placement and number of pilot symbols, we investigate optimal training sequences in OFDM systems and we analyze the number of pilot symbols required to fulfill the sampling theorem. Using a general model for a multipath slowly fading channel, the approach is based on the LS as a criterion of channel estimation while the channel interpolation is done using the piecewise-constant interpolation compromising between complexity and performance. Simulation results demonstrate the good performance of our approach.

关键词： OFDM Multipath Channel Channel Estimation Pilot Symbols

Adaptive Switching between Space-Time and Space-Frequency Block Coded OFDM Systems in Rayleigh Fading Channel

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International Journal of Communications, Network and System Sciences 2013年第6期6卷 316-323页

作者： My Abdelkader Youssefi Nawal Bounouader Zouhair Guennoun Jamal El abbadi Laboratoire d’Electronique et de Communications (LEC) Ecole Mohammedia d’ingénieurs (EMI) Université Mohammed V Agdal (UM5A) Rabat Morocco

This work explores the performances of Space-Time and Space Frequency Coded Orthogonal Frequency Division Multiplexing (OFDM) with simple two branches transmit diversity scheme. The combination of multiple-antenna and orthogonal frequency division multiplexing (OFDM) provides reliable communications over frequency selective fading channels. We focus on the application of space-time block codes (STBC) and space-frequency block codes (SFBC) in OFDM systems over time-varying and frequency-selective channels. SFBC transmitter shows superior performance in fast varying channels while STBC shows better performance in frequency selective channels. A switching technique is presented that selects an appropriate transmission scheme between the STBC and SFBC assuming Rayleigh fading model.

关键词： OFDM MIMO Rayleigh Fading Channel STBC SFBC

仰卧位和侧卧位前入路全髋关节置换术的近期临床效果对比

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仰卧位和侧卧位前入路全髋关节置换术的近期临床效果对比

作者： ANAS KHALED MOHAMMED abbadi（阿巴迪）南昌大学

学位级别：硕士

目的:研究和分析仰卧位(S-DAA)和侧卧位(L-DAA)髋关节置换(THA)的早期结果来评价临床效果差异性。方法:搜集2021年1月至2022年9月在南昌大学第二附属医院骨科进行髋关节置换手术患者的资料作为研究对象,共60例患者,将这些患者随机分入... 详细信息

目的:研究和分析仰卧位(S-DAA)和侧卧位(L-DAA)髋关节置换(THA)的早期结果来评价临床效果差异性。方法:搜集2021年1月至2022年9月在南昌大学第二附属医院骨科进行髋关节置换手术患者的资料作为研究对象,共60例患者,将这些患者随机分入观察组(S-DAA组)(n=30)和对照组(L-DAA组(n=30)进行髋关节置换,搜集临床结果,并进行统计学分析。结果:(1)患者性别、年龄、随访情况、固定方式、髋关节活动程度及切口长度等均无显著差别,无统计学意义(P>0.05);(2)两种不同体位的DAA在手术时间、术中出血量、肢体长度差异方面存在显著差异(P0.05)、两组患者术后髋关节功能评分(Harris评分)无明显差异(P>0.05);(4)所有患者均无手术并发症。结论:S-DAA和L-DAA均取得了良好的临床效果,但L-DAA在手术过程中减少了对专用特殊器械和折叠手术台的依赖,操作更便利,手术时间更短,更符合后路关节外科医生的操作习惯;但S-DAA在控制双下肢长度差异方面更具优势。

关键词： DAA 髋关节置换术仰卧位侧卧位

Body Mass Index and Breast Cancer Risk: A Retrospective Multi-Institutional Analysis in Saudi Arabia

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Advances in Breast Cancer Research 2013年第1期2卷 7-10页

作者： Volker Rudat Nuha Birido Saleh Tuwaijri Mousa A. Al-abbadi Department of Pathology and Laboratory Medicine King Fahad Specialist Hospital Dammam KSA Department of Radiation Oncology Saad Specialist Hospital Al Khobar KSA Department of Surgery King Fahad Specialist Hospital Dammam KSA Saad Research & Development Center Saad Specialist Hospital Al Khobar KSA

Background: The purpose of this study was to evaluate the association between the body mass index (BMI) of breast cancer patients and non-cancer females of the Eastern Province of Saudi Arabia. Methods: The weight, height and age was obtained from the patient records of 706 newly diagnosed breast cancer patients and of 20,872 non-cancer female patients who consulted the two largest hospitals in the Eastern Province of Saudi Arabia between 2006 and 2012. Factorial analysis of variance (ANOVA) was used to assess the association between the BMI, age and breast cancer status. Results: The mean BMI of the non-cancer females was 29.4 and the percentage of obese patients of the different age groups ranged from 23.9% to 66.5%. The BMI increased significantly with age. The ANOVA revealed that breast cancer patients older than 50 years had a significantly lower BMI compared to their non-cancer counterparts (p = 0.01). Conclusion: Our data confirm the high BMI of the Saudi Arabian female population. The reason for our finding of a lower BMI of postmenopausal breast cancer patients compared to their non-cancer counterparts is unclear. Future studies are warranted to assess the impact of possible confounding factors on the association between obesity and breast cancer risk. An interesting factor to investigate in future studies would particularly be the use of the anti-diabetic and cancer-protective drug metformin considering that diabetes mellitus is endemic in Saudi Arabia with a prevalence of 30%.

关键词： Breast Cancer Body Mass Index Adolescent Female Saudi Arabia

Evaluation of Selected Quality Degradation Indices for Palestinian Extra Virgin Olive Oil Bottled in Different Packaging Materials upon Storage under Different Lighting Conditions

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Journal of Food Science and Engineering 2013年第5期3卷 267-283页

作者： Ibrahim Abdullah Afaneh Jehad abbadi Ziad Ayyad Wadie Sultan Khalid Kanan Department of Food Technology College of Science and Technology Al-Quds University Abu Dies P.O. Box 20002 Jerusalem Palestine Department of Biology College of Science and Technology Al-Quds University Abu Dies P.O. Box 20002 Jerusalem Palestine Department of Chemistry and Chemical Technology College of Science and Technology Al-Quds University Abu Dies P.O. Box 20002 Jerusalem Palestine

The effect of packaging materials and lighting conditions on quality of extra virgin olive oil （EVOO） was investigated during six months. The results highlighted an influence of light and type of packaging material on EVOO-quality with storage time. At shelf, all packages maintained EVOO at the end of storage in terms of acidity, peroxide value, K232, while K270 exceeded limit of EVOO in glass and PET-stored oil. Loss of phenols was the highest in glass-stored oil and the lowest in high-density polyethylene （HDPE）-stored oil. In terms of sensory evaluation, glass-stored oil lost EVOO grade after three months and its edible compliance after six months, while HDPE-stored oil maintained EVOO grade 90 days and was virgin after six months. In extended lighting, acidity, peroxide value and K232 did not exceed EVOO grade, while K270 exceeded EVOO grade after 30 days in glass and polyethylene terephthalate （PET）-stored oil and after 90 days in HDPE. The loss of phenols was the largest in glass and smallest in HDPE-stored oil. Glass stored-oil lost organoleptic edible compliance before 90 days, while that in PET was virgin at 90 days and that in HDPE maintained EVOO quality 90 days. At the end of experiment, oils in all packages were not edible. In dark, all packages maintained oil in EVOO quality in terms of all indices. The loss of phenols was marginal but was the least in glass and the highest in HDPE. It was concluded that HDPE bottles conserve stored olive oil at shelf or illumination better than PET or glass, while in dark, glass was superior over plastic.

关键词： Acidity oil oxidation olive oil stability indicators storage conditions

Analysis of Carbamates Pesticides： Immunogical Technique by Local Development of Enzyme-linked Immuno-Sorbent Assay

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Journal of Pharmacy and Pharmacology 2018年第4期6卷 395-402页

作者： N. Bellemjid A.Iddar A.Moussaif N.El abbadi A.Mesfioui National Centre for Nuclear Energy Sciences and Technologies Rabat 10112 Morocco Faculty of Sciences University lbnTofail Kenitra 14000 Morocco

Carbamates insecticides are used increasingly in organochlorine insecticides for the control of insect pests. It agriculture as a replacement for environmentally more persistent was the most used pesticides in Loukkous-Morocco. Conventional methods employed to detect/analyze carbamates residues are time consuming and require sophisticated equipment only available in well-equipped laboratories. In addition, the conventional methods usually require a lot of complex pre-treatment of samples. Therefore, convenient and rapid pesticide detection system is urgently needed. In this order, we aimed to develop a rapid ELISA （enzyme-linked immuno-Sorbent Assay） for detection of some carbamates such as carbendazim [methyl 2-benzimidazole carbamate] and carbofuran [2,3-dihydro-2,2-dimethyl-7-benzofuranylmethyl carbamate]. To develop an immunoassay for carbendazim and carbofuran we have synthesized molecules with acid function （haptens with 4 and 5 carbons） that are coupled with BSA protein and injected to the rabbits, collected antibodies are used for the achievements of the immunoanalytical assay.

关键词： Carbamates polyclonal antibodies ELISA.