bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Analysis of Readiness Factors of GOES (Guide Objective Eementary School) Mobile Learning in Elementary School
Authors: Hilaliyah Hilda , Novianti Desi , Anjani Dewi 
Published: April 2019

This study proposes a determination of readiness factors in elementary school to accept the application of GOES mobile learning in the process of Teaching and Learning Activities. The other is to find out what factors are considered sufficient to help the implementations. This research is descriptive research whom using a questionnaire media based on Aydin & Tasci's e-learning readiness (ELR) model with a rating scale. This questionnaire consists of 25 questions and will be grouped into four factors. These factors are technological factors, innovation factors, human resources factors, and self-development factors. The type of data in this study is the quantitative type. The study locations were in Elementary School of 15, 19, 20, 21, and 22 in DKI Jakarta with only 75 questionnaires from 180 questionnaires distributed. The results of the questionnaire for Elementary School of 15 showed an ELR score of 4.04 which means the school is ready to implement e-learning, while for Elementary School of 19 showed an ELR score of 3.89, Elementary School of 20 showed an ELR score of 3.91, Elementary School of 21 showed an ELR score of 3.86 and Elementary School of 22 showed an ELR score of 3.83 which means in the ready category but needs a few improvement..Â Â
Predicting Breast Cancer Using Logistic Regression and Multi-Class Classifiers
Authors: Sultana Jabeen , Khader Jilani Abdul , . . 
Published: April 2019

The primary identification and prediction of type of the cancer ought to develop a compulsion in cancer study, in order to assist and supervise the patients. The significance of classifying cancer patients into high or low risk clusters needs commanded many investigation teams, from the biomedical and the bioinformatics area, to learn and analyze the application of machine learning (ML) approaches. Logistic Regression method and Multi-classifiers has been proposed to predict the breast cancer. To produce deep predictions in a new environment on the breast cancer data. This paper explores the different data mining approaches using Classification which can be applied on Breast Cancer data to build deep predictions. Besides this, this study predicts the best Model yielding high performance by evaluating dataset on various classifiers. In this paper Breast cancer dataset is collected from the UCI machine learning repository has 569 instances with 31 attributes. Data set is pre-processed first and fed to various classifiers like Simple Logistic-regression method, IBK, K-star, Multi-Layer Perceptron (MLP), Random Forest, Decision table, Decision Trees (DT), PART, Multi-Class Classifiers and REP Tree. Â 10-fold cross validation is applied, training is performed so that new Models are developed and tested. The results obtained are evaluated on various parameters like Accuracy, RMSE Error, Sensitivity, Specificity, F-Measure, ROC Curve Area and Kappa statistic and time taken to build the model. Result analysis reveals that among all the classifiers Simple Logistic Regression yields the deep predictions and obtains the best model yielding high and accurate results followed by other methods IBK: Nearest Neighbor Classifier, K-Star: instance-based Classifier, MLP- Neural network. Other Methods obtained less accuracy in comparison with Logistic regression method.Â Â
Groundwater Site Prediction Using Remote Sensing, GIS and Statistical Approaches: A Case Study in the Western Desert, Iraq
Authors: M. Shnewer Fadhil , A. Hasan Alauldeen , S. AL-Zuhairy Mudhaffar 
Published: April 2019

Combination of remote sensing data and geographical information system (GIS) for the investigation of groundwater has become an advance approach in the researches of groundwater. The purpose of this research is to apply statistical models such as Evidential Belief Function (EBF) and Logistic Regression (LR) for mapping groundwater potential sites at Iraqi western desert (located at Al-Ramadi and Shithatha). The potential of the groundwater areas were determined depending on the spatial relationship between groundwater wells and different conditioning factors. These factors include altitude, curvature, aspect, slope, soil, normalized difference vegetation index (NDVI), topographic wetness index, fault, rainfall, stream density, stream power index, and lithology. The algorithms were used to model all layers of groundwater conditioning factors to generate groundwater probability areas. Then, the final maps included five potential classes i.e., very high, high, moderate, low and very low susceptible zones were generated. The final outcomes were validated using Area Under the Curve (AUC) algorithm. The values of success rates were 76.5% and 71.5% for EBF an LR respectively. The prediction rates for the same methods were 73.7% and 70%, respectively. The thematic maps attained from the present study indicated the capability of EBF and LR methods in groundwater potential mapping.
Magnetic Water Effect on Concrete Properties of Canal Lining
Authors: Hoobi Irzooki Raad , Saleem Khazaal Ammar , Imad Mohammed Zaid 
Published: April 2019

The present research investigated the magnetic field effect on the properties of tap water and the magnetic water effect on some properties of the concrete used for irrigation canal lining, so, for this purpose, the absorption and seepage features of concrete will be studied. The magnetic water was obtained by passing the tap water through magnetized devices with three different intensities (3000, 5000, and 7000) Gauss for 120 minutes. Some properties of magnetized water such as surface tension, viscosity, conductivity, TDS, and pH were studied. The results show that the surface tension, viscosity and electric conductivity of treated water with three different magnetization intensities were decreased about (19-22)%, (4-5)% and (6-8)% respectively as compared with results of the tap water. Also, the results show that pH was increased about (8-10)%. The magnetized water effect on the properties of concrete like compressive strength, slump, absorption, and seepage were studied. The results show that using the magnetized water (with three different intensities) instead of the tap water increased the compressive strength of concrete between (3-17)% for age of 28 days, and increased the slump between (5-13)mm. This leads to the possibility of increasing the water-cement ratio, which is, means decreasing the cost of concrete at a specified value of compressive strength. Also, the results show that the absorption and seepage were decreased about (1-9.5) % and (2-20)% respectively.Â Â
Study of the Local Scour Around L-Shape Groynes in Clear Water Conditions
Authors: I. Khassaf Saleh , A. Abbas Hiba 
Published: April 2019

River training structures; such as groynes; are efficient engineered methods utilized to protect eroding river banks. But during groynes design stage; the designers faces one of the most significant issues which is the evaluation of the maximum depth of local scour around groynes. This is due to the flow area constriction in the groyne location itself; which in turn cause increasing in local velocity that consequently causes the scour. In the present study, the maximum scour depth around L-shape groyne was computed based on laboratory experiments where different number of groynes and distances between them were used as sort of countermeasures to reduce the scour around the groynes foundations. The results showed clear decreasing in scour depth at increasing number of groynes and also distance between them in the limitation of this study.Â A new formula based on experimental data was derived to calculate the local scour depth. This formula gave R2 =0.903 which reflecting good agreement to the results.Â Â
Agile Quality Management Framework in Construction Projects (AQMFCP)
Authors: Neamah Ahmed Mohammed , Rasheed Mohammed Sawsan 
Published: April 2019

In project management there has been a shift from traditional project management to the Agile Project Management (APM) style. The proposed Agile Quality Management Framework in Construction Projects will be built as a sequence of procedure that deals with a project from primary vision of project to the final delivery of project, will trace alignment and discover a contact between Agile and Traditional Project Management (TPM) concepts and find contact points among two of the more used Agile frameworks (scrum) and one of the more confirmed Project Management framework (PMBOKÂ®) processes. This will result in a recognition of comparable areas between scrum and PMBOKÂ® processes. Agile quality Management Framework is a new agile framework that covers the whole project lifecycle. The goal of the framework is to assist the project managers to adapt a more flexible approach to managing and implementing the construction project. The findings arrive that the agile project management using the Scrum methodology profits effectiveness procedures and a lower duration of process, ensuring value of quality planning and control inputs.Â Â Â
Enhancement of Subgrade Properties Using Magnesium Oxide for Pavement Construction
Authors: A. Salem Lubna , Hasan Taher Amer , Mancy Mosa Ahmed 
Published: April 2019

This study aims to use Magnesium Oxide (MgO) as one of the modern additives to improve the properties of subgrade and consequently improve the pavements system structure and durability as well as reducing the cost of construction and maintenance of the constructed pavements. The study adopted California Bearing Ratio (CBR) testing method and cyclic triaxial compression test (this test is used to determine the soil resilient modulus (Mr)) to investigate the influence of MgO on the properties of a selected soil obtained from Baghdad city. Six doses (0.25%, 0.5%, 0.75%, 1%, 1.25%, and 1.5% of the dry weight of soil) of MgO were added to the selected soil to attain the objective of this study. The results exhibited that CBR values increased from 3.39% to (13.59%, 18.45%, 27.54%, 25.24%, 16.99%, and 14.56%) respectively, the Mr values increased from 35 MPa to (83, 97,150, 137, 110 and 103 MPa) respectively and the swelling ratios decreased from 3.4% to (1.51%, 0.80%, 0.61%, 0.66%, 1.18%, and 1.97%) respectively by adding MgO doses, previously, mentioned. Based on these results the optimum MgO dose is (0.75% by the dry weight of soil) as it satisfies the highest CBR and Mr values and the lowest swelling ratio.Â Â Â
Proposal of Sandwich Composite from Bioresource and Polystyrene Waste Materials
Authors: M. ALmusawi Aqil , Lachat Remy , Chamoret Dominique , Atcholi Kokou , Soulama Sagnaba 
Published: April 2019

Lately there is a renewed interest in the use of bio-resource materials for the production of ecological, sustainable and inexpensive building materials. Sandwich composite of minimum plastic matrix was manufactured, this was achieved by using the Thermoforming process in two steps. In the first step, the core layer was made when thermo pressed 100% hemp Shive particles under a high pressure. The second step was accomplished by wrapping the core layer with two thermoplastic composite layers of 60% of hemp tissue and 40% recycled Polystyrene. Interestingly, through the first step, elevated temperature treated the core surface (hydrophilic) and gave it greater adherence to the Polystyrene matrix (hydrophobic). Mechanical properties of this proposed sandwich composite of 80 % bio-resource were approximately four times of the Polystyrene resistance. Furthermore, the microscopic study was performed to investigate the bonding of the different components, especially for the binderless core layer. Each individual layer and the sandwich form were mechanically investigated, and the finite element method, via ANSYS, was used to illustrate the stresses in the sandwich structure.Â Â Â
Evaluation of Sustainable Site Selection Using Analytical Hierarchy Process for Hospitals: Karbala City as A Case Study
Authors: Ali Mohammed Hussein , Neamah Ahmed Mohammed , J. Alsaad Aymen 
Published: April 2019

Site selection for a hospital location is one of the pivotal strategy- related decisions taken by the government. The selection of a suitable site for a hospital requires consideration of multiple alternative solutions and assessment factors. The present study aims at determine the optimum site out of three alternative sites to build a new hospital in Kerbala city. The main sustainability factors are; urban factors (including size, accessibility, restrictions, availability), environmental factors (including geomorphology, hydrology, vegetation, climate, other environmental factors) and economic factors (including service and utilities, cost) factors. The Analytical Hierarchy Process (AHP) as a multi criteria decision support system was adopted to find the weights of each factor and reach to select the most suitable site from three alternative sites. The results showed the site number (2) was the most sustainable site to construct the hospital project, where the alternative site records a biggest normal index of 0.419.Â Â
Effect of Hollowing Ratio on the Behavior of Hollow Self-Compacting Reinforced Concrete Slender Column Under Eccentric Loading
Authors: A. S. Al- Shaarbaf Ihsan , J. H. Al-zubaidi Mohammed , A. A. Al- Zaidy Emad 
Published: April 2019

In this research the behavior of reinforced concrete slender columns with longitudinal hole under axial compression load and uniaxial bending is investigated. The paper includes testing of ten slender columns with dimensions (150 150 1300 mm). The investigation deals with the effect of using different diameters ofÂ column hole on the values of the load carrying capacity and cracking loads, mid-height lateral deflection and longitudinal shortening of the columns. Five diameters for the column holes were considered (0, 25.4, 38.1, 50.8,Â and 76.2)mm. Test results have showed that when the holes were located at the center of the column cross-section and the column was loaded with high load eccentricity, the effect of hollowing ratio on load capacity is insignificant. For hollowing ratios used in this study (0%, 2.3% ,5.1%, 9% and 20.3%), the ultimate load is decreased by (0%, 0.28%, 1.03%, 3.28% and 6.48%) respectively. The effect of hollowing ratio on columnsÂ loaded with small eccentricity of 50mm (e/h=.33)Â is greater than the effect of hollow ratio of columns with 150 mm eccentricity(e/h=1.0) which reduces the load capacityÂ for the columns by (0.00%, 0.66%, 2.65%, 4.97% and 11.26%) for hollowing ratios (0%, 2.3%, 5.1%, 9% and 20.3%) respectively.Â Â
Identify the Appropriate Key Performance Indicators for Evaluating the Performance of Construction Companies in Iraq
Authors: S. Tofan Ali , K. Breesam Hatem 
Published: April 2019

After 2003, Iraqi market has been opened in front of the world. Many of international companies have entered to the Iraqi construction market. This has led to high competition between construction companies, especially the governmental companies under the Ministry of Construction and Housing. Competition has put a strong pressure on the construction companies to continuously improve their performance. There has been a lot of research for measuring performance at the project's level, but there is a clear lack of research on the performance measurement at the companies' level. The current method of performance evaluation is relying solely on financial indicators, which cannot be the only factor for evaluating performance. Other indicators such as customer's satisfaction, work efficiency, effective planning, etc. have become of great importance to the company success. The research aims are to identify the appropriate set of key performance indicators to measure the performance of construction companies in Iraq. A questionnaire forms have been distributed which includes main performance indicators that derived from the previous studies which affect the construction companies. in conclusion, 10 KPIs selected for the construction companies that can be the start point to make a comprehensive framework for the construction companies in Iraq.Â Â
Using Waste Asphalt Concrete (WAC) for Improving Poorly sandy Graded (PSG) Subgrade Soil
Authors: Khawla H. H. Shubber Asst. Prof. Dr. , Ali S. M. Alkizwini Eng. 
Published: April 2019

Waste asphalt concrete (WAC) is one of main current sustainable problems facing accumulation in high quantities as a result of the highways failure, maintenance and reconstructions. On the other hand, presence of large amounts of poorly sand graded (PSG) soil near rivers, which are not suitable in case of using it as subgrade soil. So, present research focusing on study the effect of adding WAC on the properties of PSG soil. Modified Procter test, California Bearing Ratio test (CBR), Direct Shear test were depend on evaluating the stabilized soil properties (i.e. dry density, optimum water content, CBR, and direct shear). PSG river soil used as subgrade soil in this research brought from sides of Sadit AL- Handayi in Babylon Governorate located in middle west of Iraq, about 60 km south west of Baghdad, capital of Iraq. Percent of adding are (12, 24, 36, and 48)% by weight. Results showed that the adding of WAC increase the dry density in different rate. While the optimum water content decrease with increasing WAC added. Direct shear of stabilized soil increase while angle of internal friction decrease with increasing of added WAC. CBR values increase with increasing WAC added.
Strength and Ductility of Bubbled Wide Reinforced Concrete Beams with Diverse Types of Shear Steel Plates
Authors: Mohamed Ibrahim Amer , Abdullah Mansor Ahmed , D. Salman Wissam , Jaafar Hamood Mohammed 
Published: April 2019

This paper presents an experimental investigation on the strength of bubbled wide reinforced concrete beams with different types of shear steel plates. Eight specimens with dimensions of 215x560x1800mm were investigated. The studied variables deal with replacement of 10mm stirrups diameter stirrups spaced at 125mm by shear steel plates having equivalent cross-sectional area for stirrups at mid legs height with circular opening of different thicknesses (3, 4 and 5mm). Four specimens were without any bubbles and the others with bubbles. This study showed that the shear steel plates is a good alternative for replacing the stirrups and gives increasing in yield, ultimate load and deflection (at service load) with 5% , 15% and 9% on the average when using the bubbles. Without using bubbles, the aspect ratio of shear steel plates bounded between the boundaries 4.5 to 8 gave increased the ductility by 36%. Using the bubbles in specimens was decreased 4.7% from the total weight of specimens. ACI 318-14(1) and EC 2(2) codes give a predicted deflection more than that obtained from experimental results by 16% on the average and by 24% when using bubbles.Â Â Â
Experimental and Numerical Modeling of DNAPL Mass Discharge from the Elliptic Pool in Saturated Homogeneous Sandy Soil
Authors: Asal Gzar Hatem , Abdulwahed Hussain Rasha 
Published: April 2019

"The present study aims to study the dissolution and mass transport of trichloroethylene (TCE) as Dense Non Aqueous Phase Liquid (DNAPL) in saturated porous media." A rectangular Perspex tank of internal dimensions (150cm length 20cm width and 40 cm height) used to represent the model aquifer. The tank was packed with homogenous soil (Karbala sand)"."Unidirectional flow at five different interstitial velocities (0.9, 1.8, 2.34, 2.7, and 3.6) cm/hr assumed to study the process. The average mass transfer coefficient" was determined for each velocity .Their values were increased with increasing the velocity reaching a limit value" .A conservative tracer is used to obtain the longitudinal and transverse aquifer dispersivities"."An elliptic shape of (TCE) pool was used to carry out the dissolution processes. Steady state dissolved (TCE) concentrations at downstream were collected from ten ports with two different depths under five interstitial velocities". Two linear relationships are created from an elliptic trichloroethylene pool: these relationships were between the average Peclet number in x-direction (Pe*x(e)) with the overall Sherwood number (Sh*(e )), and the other between the average Peclet number in y-direction (Pe*y(e) ) with the overall Sherwood number (Sh*(e))". A numerical modeling was achieved using COMSOL software.Â Â
Research of Changing the Driver's Reaction Time in the Traffic Jam
Authors: Gyulyev Nizami , Lobashov Oleksii , Prasolenko Oleksii , Burko Dmytro 
Published: April 2019

In this research the main attention is paid to establishing dynamics of changes in the driverâ€™s reaction time in a traffic jam that affects traffic safety.With the help of the regression model, graphs of driverâ€™s reaction time are constructed taking into account different age groups and types of the nervous system depending on the initial level of fatigue at the entrance to traffic jam and duration of traffic jam.Analysis of these graphs allowed us to establish trends in the driverâ€™s reaction time in traffic jams, which indicate an increase in the driverâ€™s reaction time with an increase in the time spent in the traffic jam. However, at the beginning of the traffic jam, depending on the initial fatigue level, different combinations of the reaction time change occur at the entrance to the traffic jam: at low values, the reaction time increases, and at high values it decreases. It was also found that the traffic jam has a different effect on the reaction time of drivers depending on their temperament. For the reaction time of the driver-phlegmatic traffic jam does not have a significant impact.Â Â
Energy Saving for the Suburban Rolling Stock
Authors: Sumtsov Andriy , Falendysh Anatoliy , Chyhyryk Nataliya , Vasilenko Oleg 
Published: April 2019

This article is concerned with the problem of energy savings and rise of comfortableness of railway rolling stock. Done analysis has shown the insufficient paying attention to the energy efficiency of suburban rolling stock. In particular, to the problem of heat comfort for passengers. For this purpose, a procedure was carried out for the thermal audit of electric trains, taking into account the prevailing array of required indicators. To determine the sites of local heat losses, there was done the thermal-imaging inspection of the electrical train ER2 series during which it was determined the local sites of heat losses and entry of cold air. Besides the passenger compartment, there were inspected the outer body liner and driver's cabin. As a result of inspection of driver's cabin, it was found the bad quality of a sealing layer for side small windows from one side. On the basis of inspection, the recommendations for elimination of found irregularities were developed.Â Â Â
Modern Approaches to Ensuring the Competitiveness of Railway Transport in the Context of the European Integration
Authors: M. Posokhov I. , V. Chepizhko E. 
Published: April 2019

The article provides a comparative analysis of the place of Ukraine in the international rankings such as GCI, Doing business, IEF, SPI, CPI. The necessity of transformation and socio-economic features and indicators of development of the existing economic model of Ukraine are researched. The main reasons for the low level of management quality of the enterprises are identified and analyzed. The world experience of the structure of elements and implementation of organizational and economic mechanism of managing the competitiveness of enterprises of individual countries with the most successful indicators of economic development is researched. The main problems of the railway industry and the necessity of continuous improvement of the enterprise competitiveness management system are determined. The article outlines the main directions of increasing the competitiveness and development of rail transport.Â Â