AL Rafdain Engineering Journal最新文献_第4页

Estimate the Runoff Depth by Using of SWAT Model at a Watershed in Northern Iraq 利用SWAT模型估算伊拉克北部流域径流深度

AL Rafdain Engineering Journal Pub Date : 2015-07-28 DOI: 10.33899/rengj.2015.101541

M. Mohammad, A. Saadallah

{"title":"Estimate the Runoff Depth by Using of SWAT Model at a Watershed in Northern Iraq","authors":"M. Mohammad, A. Saadallah","doi":"10.33899/rengj.2015.101541","DOIUrl":"https://doi.org/10.33899/rengj.2015.101541","url":null,"abstract":"The different types of mathematical models which are physically based models or the models based on laboratory experimental and/or field measurements are considered to estimate the runoff depth and runoff coefficient relating rainfall to runoff especially for the non-measured watersheds. Soil and Water Assessment Tool (SWAT) was applied to estimate the surface runoff depth of Al-Khoser River watershed, 696km 2 . The model was calibrated based on measured single storms data at the watershed outlet, while data measured at the outlet of sub watershed (36km 2) are considered for model verification. For model calibration, the resultant values are 0.99, 0.95, 0.73 and 0.19 for determination coefficient, index of agreement, model efficiency, and t-test respectively, while verification of the model revealed values of 0.97, 0.89, 0.72 and 0.32 for the same parameters considered respectively. The model was applied as a daily continuous simulation for the period 1991-2011. Relationships between the accumulated daily runoff depths and accumulated daily rainfall depths have been obtained, additionally the yearly runoff depth related to the yearly rainfall depth was also derived. Those relations can be used to estimate the runoff depth and runoff coefficient for different studies of the watershed","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133347819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation For the Buildings Ventilation using Windcatchers in Mosul 摩苏尔市区建筑物捕风装置通风模拟

AL Rafdain Engineering Journal Pub Date : 2015-07-28 DOI: 10.33899/rengj.2015.101546

Abbas S. Hussein, A. Khedher

{"title":"Simulation For the Buildings Ventilation using Windcatchers in Mosul","authors":"Abbas S. Hussein, A. Khedher","doi":"10.33899/rengj.2015.101546","DOIUrl":"https://doi.org/10.33899/rengj.2015.101546","url":null,"abstract":"This research investigates windcatcher usage in Mosul for ventilation . The choice of a square shape windcatcher diagonally partitioned along its height attached to a room of dimensions 4x6x4 m. Indoor air motion speed and movement were studied to assess a windcatcher’s performance .A computational model is used with Autodesk Simulation CFD software for the simulation case. Part of this study was dedicated to find the geometrical characteristics of the windcatcher parameters: height (4 cases), crosssection (3 cases) and location with respect to the room (4 cases). Another part is to analyze a yearly weather data of Mosul to find the prevailing speed and direction for all cases (a range of 20-30C is chosen as a thermal comfort temperature range) and to use them as an input for the simulation to find the best case of the windcatcher. The results shows that the best heights of 4m , the best cross-section of 1x1 m and the best location of the wind catcher is found to be at the middle of long side of the room. The weather data shows that the prevailing wind speed between 1.62 to 4.83 m/s. The final result of the study confirm that the direction of the windcatcher and the room which can give the best performance using all the above selected parameters in Mosul is 337 NNW. :ملتسأ 20 – 5 2014 :لبق 28 – 4 2015 Al-Rafidain Engineering Vol. 23 No. 3 June 2015","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134644998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mixed Air Gap Eccentricity Fault Diagnosis of a Salient Pole Synchronous Generator Based on Current Signature 基于电流特征的凸极同步发电机混合气隙偏心故障诊断

AL Rafdain Engineering Journal Pub Date : 2015-07-28 DOI: 10.33899/rengj.2015.101564

Basil M. Saied, A.H. Ahmed

引用次数: 0

An experimental Study of Kevlar/epoxy Composite cylinders under internal pressure loading 内压载荷下凯夫拉/环氧复合材料圆柱体的实验研究

AL Rafdain Engineering Journal Pub Date : 2015-07-28 DOI: 10.33899/rengj.2015.101570

A. A. Ramadhan

引用次数: 1

Assessment of Air Particulate Pollution in New Badoosh Cement Factory/ Iraq 新Badoosh水泥厂/伊拉克空气微粒污染评估

AL Rafdain Engineering Journal Pub Date : 2015-07-28 DOI: 10.33899/rengj.2015.101565

K. Al-Ahmady, Hussain Muhsin Obeed

{"title":"Assessment of Air Particulate Pollution in New Badoosh Cement Factory/ Iraq","authors":"K. Al-Ahmady, Hussain Muhsin Obeed","doi":"10.33899/rengj.2015.101565","DOIUrl":"https://doi.org/10.33899/rengj.2015.101565","url":null,"abstract":"In this research, measurements of total (TSP) and fine suspended particulate PM1, PM2.5, PM7 and PM10 at Badoosh cement factory were carried out. Seventeen locations inside the factory are selected. The effect on soil around the cement factory was also studied by collecting samples in the four directions North, South, East and West to a distance of five kilometers from the factory with one kilometer spacing. The result of the study revealed that; the concentration of very fine suspended particulate PM2.5 was over the international standard limits at different locations of the factory and the overall average concentration for the factory was (47 ). For PM10 suspended particulates, the results at all locations were over the international limits and the overall average concentration reached 869 m, which was much more than the standards of 150 . On the other hand, the total suspended particulate concentration exceed the standard at several locations in the factory. Significant correlations were found among the suspended particulate concentrations according to their size. The results of soil test around the cement factory showed significant differences of oxides percentages among the directions. Higher percentages were recorded in the South and East directions than North-West direction. The results also revealed that the percentages of SiO2 and Al2O3 were 40.94% and 10.53% in the east direction whereas higher percentage for Fe2O3 (4.86%), CaO (36.81%), MgO (4.49%), and SO3 (0.76%) were recorded in the south direction of factory.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130331010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Effect of the Contraction ratio and the Shape of the Abutment on the Local Scour at a Bridge Abutments 桥台收缩比和桥台形状对桥台局部冲刷的影响

AL Rafdain Engineering Journal Pub Date : 2015-07-28 DOI: 10.33899/rengj.2015.101537

M. Mwafaq, K. Bilal

引用次数: 0

Design and Realization of An Efficient Bio 9/7 Discrete Wavelet Transform 高效bio9 /7离散小波变换的设计与实现

AL Rafdain Engineering Journal Pub Date : 2015-07-28 DOI: 10.33899/rengj.2015.101567

Zena N. Abdulkader

{"title":"Design and Realization of An Efficient Bio 9/7 Discrete Wavelet Transform","authors":"Zena N. Abdulkader","doi":"10.33899/rengj.2015.101567","DOIUrl":"https://doi.org/10.33899/rengj.2015.101567","url":null,"abstract":"In this paper, the design of an efficient bio 9/7 filter bank for the discrete wavelet transform (DWT) is proposed. The design starts with the standard design constraints of the lifting scheme architecture. A modification in the resulting 9/7 filter bank coefficients after lifting is made leading to new sets of simple and less-number coefficients for both low-pass and high-pass branches of the direct structure of the DWT filter bank. In order to speed up the operations of the designed filter bank, the need for multipliers is eliminated by realizing the designed filter coefficients in a multiplier-less manner. That’s each of the existing non-zero coefficient is represented as sum-of-powers-of-two ( ). The complexity of resulting bio 9/7 filter bank structure is the lowest among other recent issued structures. The performance of resulting structure is then examined objectively by applying three different test images and computing the peak signal-to-noise-ratio ( ) values for the reconstructed image. Subjective evaluation of these images is also achieved by calculating the average mean opinion score ( ). Objective and subjective evaluation indicate the eligibility of the designed bio 9/7 DWT filter bank for image processing.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130527325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Training Acceleration of Multi-Layer Perceptron using Multicore CPU and GPU under MATLAB Environment MATLAB环境下基于多核CPU和GPU的多层感知器训练加速

AL Rafdain Engineering Journal Pub Date : 2015-07-28 DOI: 10.33899/rengj.2015.101566

Shefa A. Dawwd, Noor M. AL Layla

{"title":"Training Acceleration of Multi-Layer Perceptron using Multicore CPU and GPU under MATLAB Environment","authors":"Shefa A. Dawwd, Noor M. AL Layla","doi":"10.33899/rengj.2015.101566","DOIUrl":"https://doi.org/10.33899/rengj.2015.101566","url":null,"abstract":"Shefa A. Dawwd / Assist. Prof. Noor M. AL Layla shefa.dawwd.2014@ieee.org aneng.noor@gmail.com Computer Engineering Department College of Engineering, University of Mosul, Mosul-Iraq Abstract Training of Artificial Neural Networks (ANNs) for large data sets is a time consuming mission. In this paper, accelerating the training of artificial neural network is achieved by a parallel training using either Multicore Central Processing Unit (CPU) or General Purpose Graphics Processing Unit (GPGPU). The training is implemented using five datasets with diverse amounts of patterns and with different neural network parameters in Multilayer Perceptron (MLP). The results show a significant increase in computation speed, which is increased nearly linear with the number of cores in multicore processor for problems with medium and large training datasets. Also, a considerable speed up is achieved when the GPU is used to train the MLP with the large training datasets. While a single core processor is a better choice when the data set size is small. The optimal number of cores or the type of the parallel platform should be employed according to the load of computation.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129429460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The effect of design tasks on changing the conceptual structure for architectural engineering students 设计任务对建筑工程专业学生概念结构改变的影响

AL Rafdain Engineering Journal Pub Date : 2015-07-28 DOI: 10.33899/rengj.2015.101563

Ekbal Alsoofee, Nahedh Taha Al-Qemaqchi

引用次数: 0

RAM-Based Neural Network Parallel Implementation on a Reconfigurable Platform and Its Application for Handwritten Digits Recognition 可重构平台上基于ram的神经网络并行实现及其在手写体数字识别中的应用

AL Rafdain Engineering Journal Pub Date : 2015-04-28 DOI: 10.33899/rengj.2015.101082

Shefa A. Dawwd, A. Al-Saegh

{"title":"RAM-Based Neural Network Parallel Implementation on a Reconfigurable Platform and Its Application for Handwritten Digits Recognition","authors":"Shefa A. Dawwd, A. Al-Saegh","doi":"10.33899/rengj.2015.101082","DOIUrl":"https://doi.org/10.33899/rengj.2015.101082","url":null,"abstract":"Artificial neural networks (ANNs) are widely used in different areas of nowadays applications. Many challenges are imposed on the practical implementation of ANNs. Some of them are: the number of samples required to train the network; the number of adders, multipliers, nonlinear transfer functions, storage elements; and the speed of calculations in either training phase or recall phase. In this paper, the RAM-based neural network is investigated. No weights, adders, multipliers, transfer functions are required to implement it neither in hardware nor in software, but at a cost of large RAM utilization. In addition, a small number of samples are required for training. However, in hardware implementation, a large size of memory is required to train it. The network is implemented on the FPGA platform. The Stratix IV GX FPGA development board, which is provided on large on board RAM, is used. A considerable speedup of 237 is achieved in either training or recalling phases. A comparable error rate of 7.6 is achieved when MNIST (Mixed National Institute of Standards and Technology) database are used to train the network on handwritten digit recognition.","PeriodicalId":339890,"journal":{"name":"AL Rafdain Engineering Journal","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116035108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0