bluuebunny/crossref_metadata_2025_split huggingface dataset:
Properties of oil palm shell lightweight aggregate concrete containing fly ash as partial cement replacement
Authors: Muthusamy Khairunisa , Jaafar Mohamad Safwan , Azhar Nili Wahida , Zamri Nurazzimah , Samsuddin Nadiah , Albshir Budiea Ahmed Mokhtar , Mohd Jaafar Mohd Faizal 
Published: May 2020

Abstract
In Malaysia, the growing palm oil business and increasing energy consumption that pushes more coals supply for power generation at power plants generates by-products. A large amount of oil palm shell from palm oil mills and fly ash from coal power plant still disposed as waste. At the same time, the expanding cement and granite industry to cater the construction industry need also causes environmental degradation that requires solution. Thus, incorporation of the industrial solid wastes as alternative mixing ingredient in production of zero granite concrete production is seen as one of the viable approach to reduce waste thrown at landfill. The present research investigates the mechanical performance of palm oil waste lightweight aggregate concrete containing fly ash as supplementary cementitious material. Five concrete mixes were prepared by varying the quantity of fly ash added that is 0%, 10%, 20%, 30% and 40% by the weight of cement. All specimens were air cured until the testing age. Then, the specimens were tested to determine compressive strength and flexural strength up to 28 days. The finding shows that integration of fly ash up to 30% produces concrete that has the potential to be used for structural application. Conclusively, approach of integrating fly ash in lightweight aggregate concrete would reduce cement consumption and fly ash disposal.
Analysis of moisture susceptibility of hot mix asphalt with waterproofing additives
Authors: Nataadmadja A D , Prahara E , Setyandito O , Ananditha R W 
Published: May 2020

Abstract
Having a good infrastructure system, especially the road networks, is important in supporting the country growth, and hence, it is necessary to ensure that the pavement does not deteriorate earlier than its designed lifetime. The most commonly pavement failures found are potholes and stripping, which are related to water intrusion to the hot mix asphalt (HMA). This research aims to provide an analysis on the moisture susceptibility of HMA with the addition of waterproofing additives, namely the Wetfix-BE, Wetbond-SP, and hydrated lime. The Marshall, Cantabro Loss, and Indirect Tensile Ratio tests were undertaken to assess the performance of the prepared samples. It was found that the specimens that were prepared using hydrated lime, as an alternative and low-cost waterproofing additive, perform reasonably well compared to the specimens that were prepared using the other additives.
The influence of palm oil fuel ash on the fresh properties of green self-compacting concrete
Authors: Abo Sabah S. H. , Zainul Z. , Hashim S. F. S. , Megat Johari M. A. 
Published: May 2020

Abstract
This paper investigates the influence of palm oil fuel ash (POFA) on the fresh properties of green self-compacting concrete (GSCC) via the slump flow, slump flow T500, L-box, and sieve stability tests when 0%, 20%, 40%, and 60% of the Portland cement content was replaced by POFA on mass-for-mass basis. The slump flow values obtained were 695 mm, 720 mm, 732 mm and 740 mm for OPC-SCC, POFA-SCC 20, POFA-SCC 40 and POFA-SCC 60, respectively, and the slump flow T500 values were 3s, 2.8s, 2.5s and 2.4s for OPC-SCC, POFA-SCC 20, POFA-SCC 40 and POFA-SCC 60, respectively. The results obtained for slump flow and slump flow T500 were satisfactory, whereby the inclusion of up to 60% POFA improved both the slump flow and slump flow T500 values. In addition, the L-box results also showed that the inclusion of POFA in the GSCC exhibited a greater passing ability performance. The sieve stability test proved that the higher the POFA content, the better the segregation resistance index of the GSCC. Thus, the overall results portrayed that it is very much viable to produce GSCC utilizing up to 60% POFA with improved fresh properties.
Experimental study on composite connection with double lipped C- Sections
Authors: Firdaus Muhammad , Saggaff Anis , Tahir Mahmood Md , Ngian Shek Poi , Siang Tan Cher , Aminuddin K M , Ali Salih Musab Nimir 
Published: May 2020

Abstract
The application of Cold-formed steel (CFS) is getting popular in several countries, and this indicates that a good potential of using lightweight materials as an alternative solution to conventional steel. However, there is still a lack of information about joint behavior, particularly composite connections integrated with CFS. This paper presents an isolated joint test of composite joints consisting of concrete slab 100 mm thickness, double lipped channel section used for beam and column, connected by hot-rolled steel gusset plates and bolts. The weakness of the thin plate behavior in the compression zone was reduced by installing the angle stiffener on the web column. Two specimens with the same configuration but with and without seat angle were tested. The experiment results revealed that by the use of seat angle, the moment resistance and stiffness of joints increased with the ratio 1.06 and 1.19, respectively.
Flexural performance of cold-formed steel section in a composite beam system
Authors: Lawan M M , Shek P N , Tahir M M 
Published: May 2020

Abstract
The application of Cold-Formed Steel (CFS) as a structural member in buildings as composite associate was rarely demonstrated due to limited technical information available about its usage in the system, despite the prospects of the CFS section in the composite system of construction in buildings as well as in light weight industrial applications as nowadays proven. Therefore, this paper aimed at demonstrating the potentials of using CFS section as a structural member in a composite beam system. Four-point bending test was used to determine the flexural strength capacities of the composite system. Results of flexural tests conducted on the composite specimens incorporating the CFS coupled with bolted shear connector proved it to be structurally feasible. In conclusion, the CFS can be employed as a structural member to eliminate the use of Hot Rolled Steel (HRS) section in small and medium size buildings and in lightweight industrial composite constructions as demonstrated.
Flexural strength improvement for structural glass: a numerical study
Authors: Hin R , Cheng K , Han V , Bernard F , Seang C , Keryvin V , Sanglebœuf J-C 
Published: May 2020

Abstract
Glass is generally known as a fragile material. It is sensible to the cracks created from manufacturing or contact damage. The strength of a perfect glass without crack could reach 10 GPa. By mean of strengthening such as thermal tempering, glass can be safely use for building as architectural elements and very limited to the structural elements. The authors have been developing glass strengthening methods and structural design for large scale glass beam. Some influencing factors are considered: material, premature crack effect, geometry of sample and bolt. The mechanical behaviour of glass is modelled as elastic-plastic material, which show significant results in glass-bolt contact problem. The crack length, size and position provide information of a critical angle that allow to govern the crack effect in the beam connection.
The experimental studies of punching shear behaviour of reinforced concrete flat slab with the inclusion of steel fibre: Overview
Authors: Zamri N F , Mohamed R N , Awalluddin Dinie 
Published: May 2020

Abstract
The application of flat slab in construction offers a good deal, whereby the elimination of beam could reduce the overall height of the building and self-weight of structure. However, a drawback is that a high concentration of shear forces and bending moments at the column peripheries are produced, which cause punching shear failure. Previous researches proved that an adequate mix composition of steel fibre reinforced self-compacting concrete (SFRSCC) has the ability to improve load carrying capacity and the energy absorption performance specifically in the slab-column connection. In view of this, this study reviewed parameters used by several previous experimental studies of the performance of steel fibre reinforced concrete in improving the punching shear strength of the flat slab. It was found that fibre volume fractions, preparation of material and size of specimen affect the efficiency of steel fibre in resisting the punching shear.
Determination of Water Consumption Behavioural Pattern of Student Resident at Public University: Universiti Teknologi Malaysia
Authors: Daud S Z , Sipan I , Ali H M , Hashim H A , Ishak M H 
Published: May 2020

Abstract
Water resource management at public university become a crucial issue when it was allied with water consumption among the students. It was due to an excessive water service charge faced by university and simultaneously effect on optimization of university’s cost. However, an initial effort to reduce the cost is by investigating the water consumption behavioural pattern among the students because there is incipient consensus that huge service charge was coming from student residents in hostel. Then, the management of water should also presumptuous that it is vital as an economic resource. Therefore, the aim of this research is to determine the water behavioural pattern of student residents at Universiti Teknologi Malaysia (UTM). This research embarked quantitative approach to collect the data from students by distributing questionnaires for those who stayed at hostel in UTM. Descriptive statistics and Standard Deviation Ellipse (SDE) were used as methods to achieve the objective of this study. The findings are beneficial for facilities managers to gain knowledge underpinning water behavioural pattern in water daily usage in UTM as well as assists them to estimate the water potential saving at UTM in future.
Effect of pressure to rice plant fibre reinforced composite on coefficient of friction of brake lining
Authors: Darmawan Agung Setyo , Purboputro Pramuko Ilmu , Febriantoko Bambang Waluyo , Hamid Abdul 
Published: May 2020

Abstract
Brake lining of motor cycle made from asbestos can produce powder when friction occurs. The resulting powder can enter the human body and cause disease. For this reason it is necessary to find alternative materials that can replace asbestos. One material that has the potential to replace asbestos as brake lining is a rice plant fibre reinforced composite. This study aims to determine the effect of pressure on the coefficient of friction of a rice plant fibre reinforced composite. The rice plant fibre reinforced composite are made from fibre rice plant, aluminium powder and fibreglass as a dispersed phase and polyester resin as a matrix. Pressure varies from 10 kg/cm2 to 30 kg/cm2, with a speed of 2000 rpm. Micro photographs were also taken to investigate the phase and bond failure on the composite. The results showed an insignificant increase in the coefficient of friction by 1.74% in dry conditions and 6.23% in wet conditions. In addition, the results also show the coefficient of friction in dry conditions is higher than in wet conditions.
Effect of operation conditions to rice plant fiber reinforced composite on coefficient of friction and wear rate of brake lining
Authors: Purboputro Pramuko Ilmu , Darmawan Agung Setyo , Waluyo Febriantoko Bambang 
Published: May 2020

Abstract
Composites made from a combination of rice plant fiber, fiberglass, aluminium powder and polyester resin are potential materials to be used as brake lining. In addition to the properties of the composite material itself, operating conditions also affect the performance of the brake lining. Therefore, this study is aimed to investigate the effect of operating conditions on the coefficient of friction and the wear rate of the composite when used as brake lining. The coefficient of friction and the wear rate tests were carried out on composites made of 40% fiber rice plant, 40% polyester resin, 10% fiberglass and 10% aluminium. The tests were carried out at a pressure of 30 kg/cm2 and a speed of 2000 rpm. The operating conditions applied in this study were dry, water, salt water and brake oil. The test results show that the highest coefficient of friction was the dry operating conditions of 0.643 and the lowest coefficient of friction was the operating condition using brake oil of 0.586. While the wear test results showed the highest wear rate in dry operating conditions of 81.25 mm3/hour and the lowest wear rate in operating conditions using brake oil of 68.34 mm3/hour.
Simulation of Queuing System for Customer Service Improvement: A Case Study
Authors: Hasugian Ivo Andika , Fernando  , Supriadi  
Published: May 2020

Abstract
This paper describes the queuing system for buying tickets in a cinema. Queues can be interpreted as a long line of customers who need service from one or more service facilities. Queues occur because of an imbalance between those served and their services. Some cinema consumers are annoyed because of the long queue to buy tickets and sometimes cancel them. One cinema that does not escape the length of the queue waiting time is the XYZ cinema. The purpose of this study is to optimize the queue system in buying tickets in the cinema to avoid long queues. The queuing system is optimized with a simulation approach using discrete event simulation. Simulation results show the best value obtained in the proposed scenario simulation model is to add a queue path to the queuing system. The results obtained are by increasing the queue path from 1 to 2 so that the length of the queue decreases from 91.2068 people per hour to 54.1520 and 50.8887 people per hour. Service time at counter 1 is 4.2201 minutes with an average number of 58.5861 people per hour. Service time at counter 2 is 3.9701 minutes with an average number of 51.1310 people per hour.
Production floor layout design for vise manufacturing using CRAFT algorithm
Authors: Sitepu Muhammad Haikal , Alda Tania , Sembiring Meilita Tryana , Nasution Andri , Sani Lubis Mutiara , Jonathan Andrian 
Published: May 2020

Abstract
Production floor is the core for manufacturing company. The value added activities are mostly performed in the production floor. Several factors influence a productivity of production including technology, skill of labor and production floor layout. The manufacturing company with optimal production floor layout will produce lower material flow which in turn reduce production cycle time and material handling cost. As the result, production floor layout design is necessary particularly for manufacturing with assembly product such as vise manufacturing. Several parts with different processes and materials will require high material flow between machines. If the machines are not arranged properly in production floor, it will increase material flows. This paper aims to demonstrate the design of production floor layout for vise manufacturing using CRAFT (Computerized Relative Allocation Facilities Technique) algorithm. This study produces alternative of production floor layouts by minimizing the distance between machines.
Effect of Tip Speed Ratio on the Performance of H-Darrieus Wind Turbine with NACA 0018 Airfoil
Authors: Hamdani Wahyu , Sihombing Hendrik V. , Ambarita Himsar , Kishinami Koki 
Published: May 2020

Abstract
The effect of Tip Speed Ratio (TSR) to the performance of an H-Darrieus Vertical Axis Wind Turbine was studied using numerical method. The blade of the turbine was formed by using NACA 0018 mode. Three-dimensional governing equations are developed. The turbulent flow was modelled using k – epsilon equation. The commercial code Computational Fluid Dynamic is employed to solve the problem. The focus in here is to explore effect of the TSR. The tip speed ratio is varied from 1.65 to 1.8. As a results, the contour velocity was generated and discussed. The average velocity of the wind leaving from the turbine is employed to estimate the power coefficient. The power coefficient for tip speed ratio 1.65 and 1.8 are discussed. The conclusion here is that tip speed ratio and the power coefficient strongly affected each other. Increasing the tip speed ratio will increase the coefficient power.
An Analysis of One-Roof Application Services Quality at the Faculty of Social and Political Sciences, University of North Sumatra
Authors: Nasution Muhammad Arifin , Yudha Regif Surya 
Published: May 2020

Abstract
The University of North Sumatra is a government agency that organizes education, research and community service. It also includes efforts to enforce effective and efficient administrative governance. Integrated administration services in the world of collegeto serve student administrative affairs have been carried out by the Faculty of Social and Political Sciences, The University of North Sumatra through online services. The online-based service is called the One-Roof Application or abbreviated as ASA to facilitate the process of correspondence between students and the administration of the faculty in the orderly administration of the academic world which is provided under one roof of service. This study uses a questionnaire as one of the data collection tools, then the study used research respondents who used the one-roof application. Based on information received from the One-Stop Application Service Unit of the Faculty of Social and Political Sciences, that every day in the customer hall serves approximately 20 people using one roof with a range of service days in 1 month, Monday - Friday totaling 20 x 20 days = 400 population with a sample size of 196 people. This is based on the formulation of the creative and organic tables set out in the Regulation of the Minister of Administrative Reform and Bureaucratic Reform of the Republic of Indonesia Number 14 of 2017 Concerning Guidelines for the Preparation of Public Satisfaction Survey Public Service Provider Units. The results of the service satisfaction study are categorized GOOD.
Facilities layout design for vise manufacturing using Blocplan
Authors: Sitepu Muhammad Haikal , Alda Tania , Sembiring Meilita Tryana , Nasution Andri , Ayu Nurul Nadhirah , Zein Muhammad Rizky 
Published: May 2020

Abstract
Production floor requires several supporting facilities such as warehouse, office, labor locker and shipping/receiving area. These facilities are used to do activities other than production such as storing raw materials, rest for labor and other administration works. These facilities must be designed around the production floor. Design facilities layout becomes important for production since it can influence the material and human flow between facilities and production floor. As the result the arrangement of supporting facilities is necessary to make production activities run smoothly. Mistake in arrangement of supporting facilities might increase material and human movements which in turn increase material handling costs. Vise manufacturing requires supporting facilities to support the production of vise. The purpose of this study is to demonstrate the use of Blocplan in arranging supporting facilities for vise manufacturing.
Time Frequency Signal Classification Using Continuous Wavelet Transformation
Authors: Sirait Helbert , Sebayang Kerista , Humaidi Syahrul , Sembiring Timbangen , Tarigan Kerista , Sembiring Kurnia , Rahayu Teguh , Ainun Ayun Ria , Sinambela Marzuki 
Published: May 2020

Abstract
Time-frequency analysis can provide useful information in digital signal seismic data processing and interpretation. The energy concentration of the spectrum depends on the consistency of function of the time-frequency analysis and instantaneous frequency variation digital signal. In this case, we used the digital signal seismic from selected seismometer broadband which deployed in Sumatera Island. The aim of this study to classify the waveform based on the time-frequency analysis using continuous wavelet transform (CWT). The sample data used the earthquake of 20 February 2018 in North Sumatera. The result indicated the classification between the horizontal and vertical components from the seismometer broadband is different. The classification of vertical is affected by seismic source and horizontal component affected the site effect.
Comparison of Crude Oil Supply Cost Between Ship Rental and Single Point Mooring
Authors: Rizkya I , Syahputri K , Sari RM , Syardhi OC 
Published: May 2020

Abstract
Today, the need for fuel oil and gas are increasing. Fuel oil and gas is the energy needed by the public to support daily activities. To meet the people needs for fuel oil and gas, the company is not only focused on the Indonesian people needs. Production principle carried out is make to stock, so the company makes direct purchase of imported and domestic crude oil and through government entitlement. Currently this fuel oil company has a problem that is quite urgent because the currency value is related to the crude oil procurement. This causes the profit obtained by the company is not optimal. So it needs to be evaluated relates to crude oil procurement policies in the company. As a result, the total costs spent by GP ship rental policy is $ 53.572.938, but by using the SPM (Single Point Mooring) method will save around $ 114.300.205 for 4 years scale or $ 28.575.051 in a year.
Product Placement Based on Throughput at PT XYZ Warehouse
Authors: Tambunan Mangara M , Tambunan Regina 
Published: May 2020

Abstract
PT. XYZ is a company engaged in the manufacture of beverages with various types of drinks both carbonated soft drinks and non-carbonated soft drinks. The company’s products are coca cola, fanta, sprite, minute maid, ades, nutriboost, etc. The company has a warehouse to store products that are produced before being distributed to consumers. There are 79 types of products stored in the warehouse. Problems faced by PT. XYZ is a product that does not have a fixed storage block yet and the company does not have a clear product grouping where the product placement is not based on the similarity of product types and the level of product activity so it takes time to look for products stored in the warehouse when needed. Therefore, it is necessary to design warehouse layout PT. XYZ by using the dedicated storage method to place the product in a fixed location and based on the level of activity. The results of product placement in the dedicated storage method show that the highest T / S value is product code 975341, with a value of 5,200 so that the product is placed in the storage block closest to the staging bays (I / O point).
Maternal mortality classification for health promotive in Dairi using machine learning approach
Authors: Manik Henry , Siregar M. Fidel G. , Kintoko Rochadi R. , Sudaryati Etti , Yustina Ida , Triyoga Rika Subarniati 
Published: May 2020

Abstract
Reducing maternal mortality rate is a key concern of health promotion in developing countries or city face. The investigated and survey for maternal mortality had been done in Dairy City. There are 149 samples got from the survey directly in this area for 2017. In this study, we use a machine learning approach to train and test the data of maternal mortality. The aim of this study to classification maternal mortality in health promotion for reducing the maternal mortality rate in Dairi. The result of this study indicated the decision tree and Naïve Bayes are available to train and test the dataset. The accuracy of the decision tree of maternal mortality is 100 % and the Naïve Bayes model indicates 97.37 % of maternal mortality.