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Using Multivariable Linear Regression Technique for Modeling Productivity Construction in Iraq

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Open Journal of Civil Engineering 2013年第3期3卷 127-135页

作者： Faiq mohammed Sarhan Al-Zwainy mohammed hashim Abdulmajeed Hadi Salih Mijwel Aljumaily Department of Civil Engineering College of Engineering Al-Nahrain University Baghdad Iraq Department of Environmental Engineering College of Engineering Al-Mustansiriya University Baghdad Iraq Ministry Industry and Minerals State Industrial Design and Consultation Company (Sidcco) Baghdad Iraq

Productivity is a very important element in the process of construction project management especially with regard to the estimation of the duration of the construction activities, this study aims at developing construction productivity estimating model for marble finishing works of floors using Multivariable Linear Regression technique (MLR). The model was developed based on 100 set of data collected in Iraq for different types of projects such as residential, commercial and educational projects. Which these are used in developing the model and evaluating its performance. Ten influencing factors are utilized for productivity forecasting by MLR model, and they include age, experience, number of the assist labor, height of the floor, size of the marbles tiles, security conditions, health status for the work team, weather conditions, site condition, and availability of construction materials. One model was built for the prediction of the productivity of marble finishing works for floors. It was found that MLR have the ability to predict the productivity for finishing works with excellent degree of accuracy of the coefficient of correlation (R) 90.6%, and average accuracy percentage of 96.3%. This indicates that the relationship between the independent and independent variables of the developed models is good and the predicted values from a forecast model fit with the real-life data.

关键词： Multivariable Linear Regression Techniques Construction Productivity Finishing Work Coefficient of Correlation

Identification of Dust Sources in Iraq Using Meteorological Surface Data and Satellite Data

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Journal of Environmental Science and Engineering(A) 2013年第5期2卷 299-305页

作者： Bassim mohammed hashim Reyam Naji Ajmi Suhair Abdulsattar Abduljabbar Department of Environmental Researches Ministry of Science and Technology Baghdad 496 Iraq Department of Environmental Science AL-Mustansaryah University Baghdad 496 Iraq Department of Mechanical System Ministry of Science and Technology Baghdad 496 Iraq

The research included employment of the meteorological surface data such as surface pressure and wind speed and direction to determine the sources of dust in Iraq through the study and analysis of dust phenomena that strike Iraq in 2011 and at different times of the year. The results showed that Iraq was suffering to No. （18） dust storms in 2011. The highest wind speed recorded at the beginning of the composition of most the dust storms ranged of 6-10 m/s and the lowest wind speed values ranged of 10-14 m/s, while the direction of the wind in No. （14） dust storms were flowed from NW （northwest）, only No. （4） dust storms were flowed from southwest SW （southwest）, due to the fact that the prevailing wind in Iraq is NW in most days of the year. Atmospheric pressure values recorded for the day of dust storms are ranged of 960-990 millibar, due to the existence Iraq under high pressure system most days of the year. Satellite data of Meteosat 9 are used to determine the sources of dust over Iraq. Used the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations CALIPSO data to determine the vertical section of the dust, during a dust storm.

关键词： Air pollution dust meteorological surface data satellite data.

Severity Based Light-Weight Encryption Model for Secure Medical Information System

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Computers, Materials & Continua 2023年第3期74卷 5691-5704页

作者： Firas Abedi Subhi R.M.Zeebaree Zainab Salih Ageed Hayder M.A.Ghanimi Ahmed Alkhayyat mohammed A.M.Sadeeq Sarmad Nozad Mahmood Ali S.Abosinnee Zahraa H.Kareem Ali hashim Abbas Waleed Khaild Al-Azzawi Mustafa Musa Jaber mohammed Dauwed Department of Mathematics College of EducationAl-Zahraa University for WomenKarbalaIraq Energy Eng.Department Technical College of EngineeringDuhok Polytechnic UniversityDuhokIraq Computer Science Department College of ScienceNawroz UniversityDuhokIraq Biomedical Engineering Department College of EngineeringUniversity of Warith Al-AnbiyaaKarbalaIraq College of Technical Engineering The Islamic UniversityNajafIraq ITM Department Technical College of AdministrationDuhok Polytechnic UniversityDuhokIraq Computer Technology Engineering College of Engineering TechnologyAl-Kitab UniversityIraq Altoosi University College NajafIraq Department of Medical Instrumentation Techniques Engineering Al-Mustaqbal University CollegeHillah51001Iraq College of Information Technology Imam Ja’afar Al-Sadiq UniversityAl-Muthanna66002Iraq Department of Medical Instruments Engineering Techniques Al-Farahidi UniversityBagdadIraq Department of Medical Instruments Engineering Techniques Al-Turath University CollegeBaghdad10021Iraq Department of Medical Instruments Engineering Techniques Al-Farahidi UniversityBaghdad10021Iraq Department of Medical Instrumentations Techniques Engineering Dijlah University CollegeBaghdadIraq

As the amount of medical images transmitted over networks and kept on online servers continues to rise,the need to protect those images digitally is becoming increasingly ***,due to the massive amounts of multimedia and medical pictures being exchanged,low computational complexity techniques have been *** commonly used algorithms offer very little security and require a great deal of communication,all of which add to the high processing costs associated with using ***,a deep learning classifier is used to classify records according to the degree of concealment they *** images that aren’t needed can be saved by using this method,which cuts down on security *** is one of the most effective methods for protecting medical images after this *** and dispersion are two fundamental encryption processes.A new encryption algorithm for very sensitive data is developed in this *** splitting with image blocks is nowdeveloped by using Zigzag patterns,rotation of the image blocks,and random permutation for scrambling the *** that,this research suggests a Region of Interest(ROI)technique based on selective picture *** the first step,we use an active contour picture segmentation to separate the ROI from the Region of Background(ROB).Permutation and diffusion are then carried out using a Hilbert curve and a Skew Tent *** all of the blocks have been encrypted,they are combined to create encrypted *** investigational analysis is carried out to test the competence of the projected ideal with existing techniques.

关键词： Deep learning encryption medical images scrambling security skew tent map rotation zigzag pattern

Influence of Magnetic Treatment on Salts Leaching： From Soils of Different Salinity Levels

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Journal of Agricultural Science and Technology(B) 2014年第6期4卷 434-439页

作者： Khalida Abdul-Karim Hassan Farhad Ali hashim Sarwar mohammed Rasheed Ahmed Department of Soil and Water Faculty of Agriculture and Forestry Duhok University Duhok 42001 Kurdistan Region Iraq

Leaching behavior of individual ions from three saline soils （S1 = 85.0 dS/m, S2 = 53.92 dS/m and S3 = 38.14 dS/m） under magnetic water （MW） treatment or non-magnetized well water （WW） was investigated in column study. After five pore volumes, soil electrical conductivity （EC） decreased to a range between 2.99-3.29 dS/m under the two water treatments. The rate of soluble cations leached was Na＋〉 Ca2＋〉 Mg2＋〉 K＋ and CI- 〉 SO42- 〉 HCO3- for anions under the two water treatments. The greater amount of salt leached was during the first two pore volumes and was higher under MW treatment. Among soils, the higher the initial EC, the greater the amount of the salt leached. Measurements of the exchangeable Na~ performed at the end of leaching experiment showed a high decrease in soil exchangeable Na＋ compared to the initial values of sodium adsorption ratio （SAR） and exchangeable sodium percentage （ESP） in the soil indicated that there was no prospects of soil sodification after leaching with five pore volumes.

关键词： MW soil salinit leaching

Ascites and alpha-fetoprotein improve prognostic performance of Barcelona Clinic Liver Cancer staging

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World Journal of Gastroenterology 2015年第18期21卷 5654-5662页

作者： Asmaa I Gomaa Alzhraa Al-Khatib Wael Abdel-Razek mohammed Saad hashim Imam Waked Hepatology Department National Liver Institute Menoufiya University Oncology Department National Liver Institute Menoufiya University

AIM: To assess how ascites and alpha-fetoprotein(AFP) added to the Barcelona Clinic Liver Cancer(BCLC) staging predict hepatocellular carcinoma ***: The presence of underlying cirrhosis, ascites and encephalopathy, Child-Turcotte-Pugh(CTP) score, the number of nodules, and the maximum diameter of the largest nodule were determined at diagnosis for 1060 patients with hepatocellular carcinoma at a tertiary referral center for liver disease in Egypt. Demographic information, etiology of liver disease, and biochemical data(including serum bilirubin, albumin, international normalized ratio, alanine and aspartate aminotransferases, and AFP) were evaluated. Staging of the tumor was determined at the time of diagnosis using the BCLC staging system; 496 patients were stage A and 564 patients were stage B. Patients with mild ascites on initial ultrasound, computed tomography, or clinical examination, and who had a CTP score ≤ 9 were included in this analysis. All patients received therapy according to the recommended treatment based on the BCLC stage, and were monitored from the time of diagnosis to the date of death or date of data collection. The effect of the presence of ascites and AFP level on survival was ***:At the time the data were censored,123/496(24.8%)and 218/564(38.6%)patients with BCLC stages A and B,respectively,had *** mean survival of the BCLC A and B patients during a three-year follow-up period was 31 mo[95%confidence interval(95%CI):29.7-32.3]and 22.7mo(95%CI:20.7-24.8),*** presenceof ascites,multiple focal lesions,large tumor size,AFP level and CTP score were independent predictors of survival for the included patients on multivariate analysis(P<0.001).Among stage A patients,18%had ascites,33%had AFP≥200 ng/m L,and 8%had *** median survival in the presence of ascites was shorter if AFP was≥200 ng/m L(19 mo vs 24 mo),and in the absence of ascites,patients with AFP≥200 ng/m L had a shorter survival(28mo

关键词： Alpha-fetoprotein Ascites Barcelona Clinic Liver Cancer Hepatocellular carcinoma Survival

阿拉伯学生汉语作文偏误情况考察——以苏丹喀土穆大学孔子学院为例

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阿拉伯学生汉语作文偏误情况考察——以苏丹喀土穆大学孔子学院为...

作者：孔永信（mohammed hashim Osman Hissin）大连外国语大学

学位级别：硕士

随着中国的国际地位不断提升,学习中文的阿拉伯学生日益增多。在学习过程中,以阿拉伯语为母语的学生会产生一系列偏误。本文通过对阿拉伯学生汉语作文的偏误进行分析,力图发现学习者偏误呈现的规律,以此分析偏误原因,希望对阿拉伯地区... 详细信息

随着中国的国际地位不断提升,学习中文的阿拉伯学生日益增多。在学习过程中,以阿拉伯语为母语的学生会产生一系列偏误。本文通过对阿拉伯学生汉语作文的偏误进行分析,力图发现学习者偏误呈现的规律,以此分析偏误原因,希望对阿拉伯地区的汉语教学提供借鉴与指导。本文以苏丹喀土穆大学孔子学院学生的作文为研究语料,从词汇、语法、汉字、标点符号四个方面,运用分类、举例、统计等方法归纳偏误类型。通过阿拉伯语与汉语的对比,探讨阿拉伯学生作文偏误的原因,并以此提出了一些有针对性的教学建议与策略,以帮助教师提高教学效率,减少学生学习过程中的偏误。本文的研究将有助于提高阿拉伯学生的汉语写作能力与汉语水平,促使苏丹乃至阿拉伯地区汉语教学的深入研究与发展。本文共分为六章:第一章,绪论。本章主要介绍选题意义、研究现状、研究思路和方法,为全文的展开提供背景,奠定理论基础;第二章,初级阶段阿拉伯学习者汉语作文的偏误类型,从词语、语法、汉字和标点符号四个方面总结归纳偏误类型。第三章,中高级阶段阿拉伯学习者汉语作文的偏误类型,从词语、语法、汉字和标点符号四个方面总结归纳偏误类型。第四章,阿拉伯学习者汉语作文的偏误与原因分析。本章对学习者不同的偏误类型与阶段进行数据上的统计分析,并进一步通过汉阿两种语言对比探讨偏误原因。第五章,针对阿拉伯语母语者写作教学的建议。本章提出了四个方面的建议,即词汇教学、语法教学、汉字教学与标点符号的教学建议。第六章,结语。本章是对本文的总结,并提出了研究的创新点与不足之处。

关键词：偏误分析汉语作文阿拉伯学习者教学建议

The Effect of Several Service and Weathering Parameters on Tensile Properties of PVC Pipe Materials

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Materials Sciences and Applications 2012年第11期3卷 784-792页

作者： N. A. Saad M. H. Al-Maamory M. R. mohammed A. A. hashim Sheffield Hallam University Materials and Engineering Research Institute Sheffield UK University of Babylon Faculty of Material Engineering Babylon Iraq

For water and sewer pipes, PVC is considered to be one of the best row materials. Due to its physical, chemical and industrial significant properties, PVC is commercially invited to be in the first position. Many other traditional raw materials;e.g. iron, concrete, polyethylene and vitrified clay (VC), are coming in second position. This work is conducted to study the tensile properties of two different types of PVC raw materials (named as gray and white) for water pipe manufacturing by implementing different test conditions. The samples were prepared by cutting off the pipe to an individual cross sectional size rings. Afterward, they were softened smoothly by heating the ring samples to obtain flat standard tensile test specimen. The influence of strain rate (crosshead speed), temperature and UV radiation on the tensile properties of PVC pipe’s row material were investigated. The selected experimental test temperatures are (28℃, 50℃ and 70℃), the selected crosshead speeds are (5, 50 and 100 mm/min) and the UV treatment exposure times are (168, 408, 744 and 1080) hours. The result shows that the gray PVC pipes have tensile strength greater than white PVC pipes. The yield stress and modulus of elasticity are directly proportion to strain rate and inversely proportion to the treatment temperature of both PVC samples. However, the fracture strain was increased with temperature and decreased with strain rate. UV treatment didn’t show a significant effect on the yield stress and modulus of elasticity. This is an indication of PVC long time stability.

关键词： PVC Mechanical Properties Material Treatments Stabilization

Estimation of the Tissue Distribution of mRNA Transcripts for Desaturase and Elongase Enzymes in Channa striata （Bloch, 1793） Fingerlings using PCR Technique

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Estimation of the Tissue Distribution of mRNA Transcripts fo...

Decreasing of Grid-Tied PV Power Output due to Thick Haze Phenomena in Malaysia

2012 4th International Conference on Agriculture and Animal Science

作者： mohammed Aliyu-Paiko Annette Jaya-Ram Alexander Chong S. C. Roshada hashim Amuzat A. Olalekan Laboratory of Feeds development and Feeding Management Aquaculture Research Group School of Biological Sciences Universiti Sains Malaysia Laboratory of Fish Biology Aquaculture Research Group School of Biological Sciences Universiti Sains Malaysia

The variations in the capacity of fish species to biosynthesize the n-3 highly polyunsaturated fatty acids （HUFA）, eicosapentaenoic （EPA） and docosahexaenoic （DHA） acids which are crucial to the health of higher vertebrates has been well documented. HUFA biosynthesis has been reported to involve enzyme-mediated fatty acyl desaturation and elongation processes. In previous studies, various authors have cloned, characterized and identified different genes for fatty acyl desaturase and elongase （FAD and FAE, respectively） enzymes from fish species such as Atlantic salmon and zebra fish, and have also shown the up and down regulation of the activity of these enzymes in response to fluctuations in dietary HUFA. In this paper, we report on the tissue distribution in the expression of genes （mRNA） for FAD and FAE enzymes in Channa striata （Bloch, 1793） fingerlings, to evaluate the tissues of the fish which show the highest activity of these enzymes. For this purpose, mRNA from 8 different tissues of the fish （maintained on a commercial diet） were isolated and analyzed, using conventional PCR technique. The tissue distribution of the genes was estimated to be significantly （P＜0.05） higher for both FAD and FAE enzymes in the liver and brain of C. striata than in the other 6 tissues measured （muscle, ovary, testis, gill and skin） respectively. The implication of this observation with respect to the use of vegetable oils to substitute fish oil in diets for freshwater fish species is discussed accordingly.

关键词： Channa striata PCR Desaturase Elongase HUFA mRNA expression

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Journal of Energy and Power Engineering 2015年第4期9卷 399-404页

作者： Mohammad Effendy Ya'acob hashim Hizam Mohd Bakri Adam Abu Hamed mohammed Abdur Rahim Mohd Amran Mohd Radzi Yoshio hashimoto Mohd Rahimi Yusoff Department of Electrical & Electronic Engineering Faculty of Engineering Universiti Putra Malaysia Selangor 43400 Malaysia CAPER (Centre of Advanced Power and Energy Research) Universiti Putra Malaysia Selangor 43400 Malaysia Institute of Mathematical Research Universiti Putra Malaysia Selangor 43400 Malaysia Department of Electrical Engineering King Fahd University of Petroleum & Minerals Dhahran 31261 Saudi Arabia Institute of Caron Science and Technology Shinshu University Nagano 380-8553 Japan Faculty of Engineering Technology Universiti Teknikal Malaysia Melaka 76100 Malaysia

Recently, thick haze and poisonous smoke have cloaked the surrounding air in Malaysia due to the uncontrollable and unethical burning of nearby country. This devastating episode of open burning started in the year 1997 in Indonesia which deeply affected most of the ASEAN （association of southeast asian nations） countries especially their neighbour Malaysia and Singapore. The PV （photovoltaic） technology as an alternative means of energy generation experiences such significant energy decrease based on this condition which is due to the shading of sunlight. The 6 h claims of good sunlight has become not more than 2 h and gets worst when the API （air pollution index） struck 200 levels which is at very unhealthy condition. This study embraces some findings from 1 kWp PV generator field data installed in Malaysia reflecting the daily energy decrease operated during this unhealthy weather condition. It is found that, such significant energy decrease with the value of 0.43 W power output per increment of one point API. This value shows such concrete proof of additional factors to be considered in PV modelling in line to support PV technology adaptation in the ASEAN region.

关键词： Haze PV performance tropical climate environmental impact AP1.