bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Occupational Noise Exposure to Work-Fatigue of Indonesian Crumb Rubber Plants
Authors: Ihsan T , Afriani N , Edwin T , Derosya V , Sari P N 
Published: March 2021

Abstract
The purpose of this research was to analyze the effect of noise on the level of work-fatigue in the production area of three crumb rubber plants at Padang City, Indonesia. It also examines the impact of age, period work, marital status, and education level on work-fatigue. Occupational noise in the working area was measured using a Sound Level Meter, while work-fatigue was measured using the Indonesian fatigue measurement questionnaire (KAPUK2). The respondents of this study were workers in these plants, 213 people in the wet-area, and 135 people in the dry-area. Results showed that the average noise of the production area had exceeded the threshold value, which was 90.98 dB. There were 26.19% experienced mild-fatigue, 71.43% moderate-fatigue, and 2.38% heavy-fatigue. Noise, age, and working experience were a related and significant influence on work-fatigue, where the probability value was respectively 0.046, 0.001, and 0.000 (p≤ 0.05). The results of multiple regressions showed that occupational noise was the most influential factor in the occurrence of work-fatigue with an odds ratio of 3.92.
Designing carbon dioxide absorbent and detector products using the Quality Function Deployment (QFD) method
Authors: Ginting R , Ramadhan M 
Published: March 2021

Abstract
Global warming is defined as an increase in the average temperature of the earth’s surface caused by an increase in the amount of greenhouse gases in the earth’s atmosphere. The largest contributor to greenhouse gases on earth is carbon dioxide (CO2). It is hoped that this CO2 detector and absorber tool can solve the problem of harmful gases generated from existing industries. This tool is silver with a size of 30 × 30 cm, and the material used is aluminum and has an additional function in the form of a coil cable. The design of this tool uses the method of brainstorming techniques and sampling techniques by means of open and closed questionnaires to determine the type of product. After that, a market survey is conducted using sampling techniques and determining the validity and reliability of the product with competitor I, competitor II and competitor III. The stages from problem to sub problem are determined to classify the goals that will be made in designing the product. Sub-problem to sub-solution steps are carried out to determine the Quality Function Deployment (QFD) of the product.
Evaluation of e-commerce services quality using Fuzzy AHP and TOPSIS
Authors: Ishak A , Ginting R , Wanli W 
Published: March 2021

Abstract
Rapid technological developments require people to use information and communication technology to transact goods/services. Based on a survey by the Central Statistics Agency (BPS), of all data collection efforts, only 15.08% are e-commerce entrepreneurs. This shows that business conducted via the internet in Indonesia is still low. The low utilization of e-commerce can be caused by several obstacles, one of which is the customer trust that is built when customer satisfaction is met. This research was conducted to evaluate the quality of e-commerce services using Fuzzy AHP and TOPSIS. The determination of sub-criteria is done using the Delphi method. After that, the calculation of consistency is carried out using the AHP method. The results of calculations using Fuzzy AHP-TOPSIS show that the best e-commerce orders are Tokopedia (0.6206), Bukalapak (0.5208), Elevenia (0.2094) and Shopee (0.1910). Based on the research results, the recommendation for e-commerce with the best service quality is Tokopedia, this is because Tokopedia has the highest weight on the sub-criteria for product return services compared to other e-commerce. The results of this study can be used by other e-commerce companies to improve service quality based on criteria and sub-criteria that are considered important according to expert opinion.
Structure modeling and analysis for improving the strength of horizontal pump system
Authors: Haryanto I , Yohana E , Mahdi I , Sihotang I H , Choi K-H 
Published: March 2021

Abstract
Generally, pumps are used as equipment to move liquids from one place to another, such as in power plants, petroleum companies, etc. One of the kinds of the pump is the Horizontal Pumping System which consists of a motor, trust room, cradle, pump, and base. This study is motivated by the problem appearing of load increase at the suction and discharge nozzle so that it exceeds the allowable load. That load surges cause the pump structure to receive large vibrations, which results in damage to some Horizontal Pump System structures. Therefore, structural analysis on the Horizontal Pumping System to determine the displacement and durability of each cradle are necessary. The purpose of this study is to determine the strength of the pump structure and design additional tools to strengthen the pump structure. In this study, SOLIDWORKS is used for 3D modeling of the Horizontal Pump System structure. Meanwhile, the strength analysis of the structure is conducted using ANSYS Static Structural. Based on the analysis results, there is a quite large displacement in the pump section associated with the suction nozzle. On the other hand, the cradle resistance is still in the elastic deformation area with a maximum value of 24881.97 psi (σy = 3.01x104 psi). Therefore, development is needed by adding a cradle in the pump section associated with a suction nozzle. By adding this cradle there is a reduction in displacement experienced by the pump. Pump displacement changes to 0.036 - 0.097 inches in x-axis, 0.009 - 0.021 inches in y-axis, and 0.001 - 0.005 inches in z-axis.
Preparation Smallest PVA/Binahong Leaf Nanofiber for Wound Dressing Applications by Varying Electrospinning Variable using Taguchi Method
Authors: Ridwan F , Ananta A A 
Published: March 2021

AbstractBinahong leaf is one of the herbal plants known to have interesting properties such as accelerating wound healing, anti-bacterial, etc. Converting Binahong leaves into fiber will increase their effectiveness because they are easier to absorb. The electrospinning method is used to convert Binahong polymers into Binahong fibers. The Taguchi method is used for experimental design with three factors and three levels. The resulting fiber properties vary with each variation factor. The smallest fiber obtained was 459,993 nm with tip and collector distance, voltage, and weight% PVA, respectively, 8 cm, 20 kV, and 8% (98.6922 P). Wound dressing by using Binahong nanofiber is possible.
Construction technology and treatment effect of RoadMesh reinforcement in joint section between new and existing asphalt pavement
Authors: Xiao Q M , Zha X D , Hu H W , Chen H P , Wang Z W , Wu H 
Published: March 2021

Abstract
In order to verify the application effects of pavement reinforcement technology with RoadMesh steel wire mesh, and relied on the S415 Reconstruction and Extension Project from Xiapuzhen to Jietoutang in Tongshan County, Xianning City, Hubei Province, the application researches on construction technology and treatment effect of RoadMesh reinforcement were carried out for the joint section between new and existing asphalt pavement through scheme design, field construction, tests and analysis and economic comparison. The results show that the tensioning and fixing of RoadMesh are the key construction processes, and the arching and rolling of RoadMesh should be strictly prohibited during its construction. The asphalt pavement performances of RoadMesh reinforcement is better than that of unreinforcement, and the reinforcement effect between lower surface layer and base layer is better than that between base layer and subbase layer. The RoadMesh can effectively improve the integral bearing capacity of asphalt pavement structure and the resistances of reflection cracking and differential settlement in the joint section between new and existing pavement. Compared with the traditional reinforcement of geotechnical synthetic materials, the RoadMesh has higher performance price ratio and better long-term pavement performances. Therefore, the pavement reinforcement technology of RoadMesh can be widely popularized and applied.
A review on the application of natural rubber as asphalt modifier
Authors: Ansari A H , Jakarni F M , Muniandy R , Hassim S 
Published: March 2021

Abstract
Natural rubber as bio-modifier of bitumen and asphalt mixtures has shown to have some beneficial effects. As initially produced, natural rubber consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds, plus water. Natural rubber can consist of various forms including as latex, which is a sticky, milky colloid; cup lump which is a coagulated latex and ribbed smoke sheet. Natural rubber is used extensively in many products and applications, either alone or in combination with other materials as it has a large stretch ratio and high resilience, and extremely waterproof. Due to these properties together with a chemical composition which can be classified as elastomers, natural rubber modification can improve the performance of conventional asphalt mixtures that are currently faced limitation against increased traffic loading and higher axle loads together with the effect of ageing, moisture, and temperature. Also, the application of natural rubber as part of the construction of asphalt mixture pavement might support the national agenda to boost rubber industry. This paper will review the application of various forms of natural rubber as modifier either in bitumen or asphalt mixtures based on previous studies done by other researchers. Numerous studies have been conducted based on different types and composition of natural rubber to determine the performance especially in terms of rutting and fatigue cracking properties.
The effect of using asbuton with used waste diesel oil on the stability of the porus asphalt mix with hot mix cold laid method
Authors: Gusty Sri , Erniati  , Yosis  
Published: March 2021

Abstract
The abundant availability of Asbuton in Indonesia should be proportional to the percentage of its use, however, in the implementation of pavement works, it is still dominated by petroleum asphalt, the price of which tends to be higher than the Asbuton. If you look at the elements in Asbuton, namely minerals and bitumen, it should be superior to petroleum asphalt. One of the factors where the use of Asbuton is not optimal is that the stability value of the mixture using Asbuton is still low compared to the mixture using petroleum asphalt. So this research aims to analyze the stability value of the porous asphalt mixture using Asbuton and waste oil as a rejuvenating agent with hot mix cold laid method. The research method was carried out by carrying out test objects with variations in Asbuton content of 5%, 5.5% and 6% with variations in fuel wastage rate of 0%, 2%, 3% and 4%. The total number of test objects is 36 samples. Then the Marshall test was tested to determine its stability value. The results obtained based on the test results are the highest average stability value at the variation of the levels of Asbuton 6%, 5.5% and 5% respectively 1295.3 Kg with 4% waste oil content; 1238 Kg with 3% used oil; and 773 kg with a waste oil content of 2%. Adding the Asbuton content increases the stability value; however, the level of used oil in the best results still varies. It can therefore be concluded that the highest stability value of a hollow asphalt mixture using an Asbuton content of 6% and a waste oil content of 4% with a value of 1295.3 Kg, meets the specification of the Road Engineering Association of Malaysia (REAM).
Study the Possibility of using Fiber and Polymer Composite Materials in Helical Spring Manufacturing
Authors: Rasol H A , Ismail M R , Najam A A 
Published: March 2021

Abstract
This work deals with studying the possibility of introducing new material into the spring manufacturing and study the properties of this spring and the load-carrying capacity when it is facing compression load. Then, specifying the application that this new composite spring could be used for. One of the applications of springs are in the suspension system, and the primary demand that the designers of automobiles are looking for is improving fuel efficiency, which may be related to the weight of the vehicle. In this research, the steel spring has been replaced by glass and carbon fibers composite with polyester resin as a matrix material. Theoretical analysis has been conducted, and numerical analysis of spring was performed using ANSYS WORKBENCH to simulate the spring under axial compression load. A comparison between the the theoretical and numerical deflection results has been made to predict the best material that can be used for replacement the steel spring. The second part of the research is the selection of materials and the utilized mold in the manufacturing process of the composite helical compression spring by using fibers, it was found that carbon fiber spring has results near to steel spring with stiffness 5.66 and steel 5.49 and glass composite spring 5.018 and carbon composite deflection was less than the glass composite deflection.
Artificial Neural Network Control of a Multiple Effect Evaporators via Simulation
Authors: Ahmed Duraid F , Khalaf Zainab A 
Published: March 2021

AbstractThis research studies the dynamic model and control of multiple effect evaporators of tomato solutions by implementing three control strategies: PID, neural model reference, and neural model predictive controllers. The evaporator’s control is crucial to maintain the product specifications at different operation conditions at minimum operating cost. The model reference control and model predictive control has been designed and evaluated. The simulation results showed that the neural predictive controller is more suitable, has lower overshoot, less offset value, and less integral absolute error.
Study the Effect of Phase Change Material on the Performance of Evacuated Tube Heat Pipe Solar Collector under Iraqi Climatic Conditions
Authors: Ali Sarah H , Eidan Adel A , Sahlani Assaad Al 
Published: March 2021

Abstract
This work presents an experimental study to investigate the effect of integration phase change material (PCM) on thermal performance and efficiency of heat pipe-evacuated tube solar collector (HP-ETSC). The experiments were conducted under the Iraqi weather condition during the winter season (January, February, and March). To thoroughly investigate the thermal performance of HP-ETSC, a new experimental test rig was designed and manufactured based on standard criteria. The results showed that when integrating PCM with the system, it can significantly enhance the thermal capacity of the HP-ETSC system. The efficiency is increased by 3-5% and maintains the high temperature of water for a longer time at night. Moreover, the coefficients of evaporator heat transfer (EHTC) and condenser heat transfer (CHTC) of the heat pipe are also increased. The results from the developed HP-ETEC system are promising, and this experimental model can be applied using different types of phase change materials that are suitable to be used in Iraq.
Improving the Value of the Power Coefficient for Three Straight-Blades Darrieus Wind Turbine
Authors: Khammas Farhan A 
Published: March 2021

AbstractIn this study, an experimental test was carried out using a subsonic wind tunnel to study the improvement of the power coefficient of the three straight-blade Darrieus vertical axis wind turbine. A three-blade vane type vertical axis wind turbine with three movable vanes in each of the blades was fitted in the middle of the three straight-blade Darrieus (0012 Airfoil) vertical axis wind turbine, and they are installed on the same rotor shaft. For this purpose, two vertical axis wind turbine, the first one has three straight-blades Darrieus of type 0012 Airfoil and the second also has three straight-blade Darrieus but of type 0012 Airfoil with a three-blade vane type vertical axis wind turbine with three movable vanes were manufactured. Both turbines were tested using a subsonic wind tunnel at different wind speeds ranging from (4-28) m/s. The consequences showed that in the second turbine test, a power coefficient of Cp=0.39 was obtained, which is greater than the power coefficient of the first turbine (Cp=0.184) after the turbines were tested in a wind tunnel under identical conditions at a wind speed of 6 m/s. Therefore, the second wind turbine produces greater electrical power than the first wind turbine.
A Stochastic Approach to Identify POS in Iraqi National Song using N-Iterative HMM using Agile Approach
Authors: Jassim Abbood Kirebut , Al_Bayaty Boshra F Zopon 
Published: March 2021

Abstract
This research article conveys the use of an agile approach for building an N-iterative HMM model for POST (Part of Speech Tagging) analysis. The agile model is a phenomenon or approach which has vast application. The implementation of such an iterative model is discussed in this paper. Most effectively, the information is conveyed with the help of the exact word we use during the communication. The sentence may not be a complete sentence or grammatically correct sentence, but the purpose of communication is served without any hurdle. Ages witnessing the evolution of the language earlier medium was sign language that might not contain any language communication rules that can be completed. Now complete language with so many tools and API is available, but the way preferred for the processing is the same (logically). The designed iterations lead to improved quality validation by using the word by word score calculation. The experiment is conducted to complete Part of Speech Tagging (POST) for Iraqi National Song (data set of translated Iraqi national song), and the stochastic approach used for completing the tagging is Iterative Hidden Markov Model. The results of the experiments convey the positive impact of the iterative approach over accuracy.
Cloud Computing and its Impact on Online Education
Authors: Al-Malah Duha Khalid Abdul-Rahman , Aljazaery Ibtisam A , Alrikabi Haider Th Salim , Mutar Hussain Ali 
Published: March 2021

Abstract
The cloud computing system has a significant role in the distance education field, because it is an important tributary of virtual education, especially mobile and blended education. Perhaps, the only challenge that must be overawed is the comprehensive coverage of rapid access to the Internet. So, the student can benefit from the applications that we will call from now and onward cloud computing services. There is no need to establish evidence to emphasize the importance of employing technological innovations to develop educational practices for developing educational curricula in Iraqi universities, but it is vital to employ technological innovations in the educational process, and this must be related to overcoming the problems facing the educational process. Therefore, employment should not be for technological dazzling that often accompanies technological innovations, but employment must be a function of urgent needs or demands. In this study, the educational process concept, with its multiple cloud inputs and outputs, was discussed how the education crisis could be overcome in all its institutions by resorting to how to employ the electronic cloud in distance education. This study also examined all the specifications of that environment and the possibility of their application in colleges and educational institutions.
Design of Optimum SIMO-PID Neural Voltage-Tracking Controller for Non-Linear Fuel Cell System Based on a Comparative Study Of Various Intelligent Swarm Optimization Algorithms
Authors: Dhahad Hayder A , Dagher Khulood E , Al-Araj Ahmed S 
Published: March 2021

AbstractThis paper presents the enhancement of the output performance of a non-linear fuel cell (FC) system using a new design that comprises an adaptive SIMO-PID neural controller with different types of online swarm optimization algorithms. The work focuses on improving the use of single-input multi-output (SIMO) PID neural networks to control the non-linear FC system. The goal of the proposed adaptive SIMO-PID neural voltage-tracking controller is to rapidly and precisely identify the optimal hydrogen flow rate and oxygen flow rate control actions that are used to control the (FC) stack terminal output voltage. Three swarm optimization algorithms are used to find and tune the weights of the SIMO-PID neural controller: the Firefly algorithm, chaotic particle swarm optimization algorithm, and proposed hybrid Firefly-chaotic particle swarm optimization (F-CPSO) algorithm. Numerical simulation results show that the proposed controller using the (F-CPSO) algorithm is more accurate than with the FA or CPSO; the proposed SIMO-PID neural controller parameters are obtained more rapidly there is a high reduction in the number of function evolutions. Furthermore, the proposed controller’s ability with the F-CPSO algorithm to generate a smooth flow rate control response for the non-linear (PEMFC) system without voltage oscillation in the output is determined by investigations under load variations.
Cognitive Radio using Spectrum Sensing by Cooperative Two Secondary Users
Authors: Al-Dulaimi Omer Mohammed Khodayer , Vlâdeanu Câlin , Martia Alexandru , Al-DulaimiMohammed Aymen Mohammed Khodayer , Al-Dulaim Mohammed Khodayer Hassan 
Published: March 2021

Abstract
In cognitive radio systems, users that are cognitive (unlicensed) must constantly scan the spectrum for primary (licensed) users to be present. In this article, the researchers display the benefits of cognitive radio collaboration. It is demonstrate that detection times can be reduced by motivating cognitive users to cooperate in the same band, thus increasing overall agility. Next, a cognitive two-user radio network is depicted and a method to exploit the inherent network asymmetry to improve agility. It is shown that our cooperation program improves the efficiency of cognitive users by 35%. The researchers then extend the cooperation scheme to two user-per-carrier multi-corporate networks and calculate the gain in asymptotic agility.
A Review of Collapsible Soils Behavior and Prediction
Authors: Mahmood Mohammed Shakir , Abrahim Mustafa Jamal 
Published: March 2021

AbstractCollapsible soils are present in arid and semi-arid regions in an unsaturated state and are considered to be one of the problematic soils that face engineering and geotechnical challenges. They are regarded as sensitive soils where their structure and engineering properties change upon wetting (leaching or soaking). The wetting leads to a break in the bonds between the soil particles (salts or clay) and a decrease in the suction power that binds the soil particles together. Large settlement occurs and thus causing problems for the buildings and facilities constructed on them. Recognizing the properties and characteristics of collapsible soils is very important in order to know how to deal with them to avoid unnecessary financial losses and problems. This paper gives an overview of collapsible soils behavior and prediction in many aspects.