bluuebunny/crossref_metadata_2025_split huggingface dataset:
Preliminary study to determine the maximum safe speed of vehicles based on rolling moments and vehicle skid to reduce of driving accidents
Authors: Sumarsono D A , Siregar R , Adhitya M , Nazaruddin N , Prasetya S , Zainuri F , Heryana G 
Published: December 2020

Abstract
Indonesia is one of the countries with the highest death rate due to road traffic accidents. Research on vehicle safety needs to be done immediately. Some travel companies, rental vehicles, and tourism vehicles have made permit speed regulations, but the basis for selecting these limits is not scientific. In this study will be presented how to determine the maximum speed allowed in a vehicle scientifically, and how to calculate the speed of the permit can be a reference to other vehicles. This research method is analytical and experimental methods. The normal force of the wheel when the vehicle turns will be different, where the normal force of the wheel inside will first be lifted due to rolling force, and will have an impact on the skid that might occur. So, this is becoming a reference in calculating the vehicle’s maximum clearance speed. The maximum speed allowed of the vehicle under study depends on the turning radius. Therefore, knowing the wheel’s normal force from various conditions and the maximum speed of the vehicle, a safety warning system can be developed in the future to avoid vehicle accidents.
Extremely high surface area of activated carbon originated from sugarcane bagasse
Authors: Dwiyaniti Murie , Elang Barruna A.G , Muhamad Naufal R , Subiyanto Iyan , Setiabudy Rudy , Hudaya Chairul 
Published: December 2020

AbstractIn this study, the extremely high specific surface area of activated carbon originated from sugarcane bagasse was produced by dry chemical activation. In this process, KOH was used as a chemical agent and directly mixed sugarcane bagasse carbon with KOH powder, which has been treated in a solid form. In particular, the influences of the impregnation ratio and activation temperature were investigated. The as-prepared activated carbons were characterized by Brunauer-Emmet-Teller (BET), which aims to determine the surface area of activated carbon and Raman Spectra analysis to examine the vibration modes of material characteristics. The maximum specific surface area of the activated carbon reached 3554 m2/g at 800 °C and an impregnation ratio of 1:4. Furthermore, the Raman spectra of activated carbon exhibited graphite structure for sample in impregnation ratio 1:2 and 1:3 due to having of G and G−1band. This material is essential for make battery.
Performance analysis and evaluation of a 10.6 kWp grid-connected photovoltaic system in Serpong
Authors: Nurdiana E , Subiyanto I , Indarto A , Riza  , Wibisono G , Hudaya C 
Published: December 2020

Abstract
The grid-connected Photovoltaic (PV) System was installed in the rooftop of Energi Building, PUSPIPTEK in 2017 located in Serpong, South Tangerang. The System consists of 40 modules @265 Wp, a 10 kWh battery system, and a 10250 kW grid-tie inverter. This study presents the performance analysis of the PV system based on the eight-months monitored data from July 2019 to February 2020. The evaluated parameters of the PV system include yields, performance ratio, capacity factor, energy efficiency, and average daily energy output of the PV system. The results show that the average value of the performance ratio and capacity factor during the eight-months monitored period were 82.42% and 14.07% with average values of the array (Ya), final (Yf
) and reference (Yr
) yields were 3.49 kWh/kWp/d, 3.38 kWh/kWp/d, and 4.12 kWh/kWp/d, respectively. Meanwhile, the average daily energy output of the PV system during the eight-months monitored period was 36.92 kWh per day with the average values of the module (ƞPV), system (ƞsys), and inverter (ƞinv
) efficiency was found to be 15.29%, 14.77%, and 96.63%, respectively. Compared with previous studies in the literature, these results indicated that the grid-connected PV system installed in Energi Building PUSPIPTEK Serpong exhibited good performance.
Improvement of small scale turbine performance: in West Aceh region using a clark-y type of turbine blades
Authors: Saputra Maidi , Sartika Rika 
Published: December 2020

Abstract
This study aims to improve the performance of small scale wind turbines in the West Aceh region using a Clark-Y type turbine blade. Aceh Barat is one of the districts in Aceh province which is located at coordinates 04°06´ - 04°47´ NL and 95°52´ - 96°30´ EL and an area is located on the west coast of Aceh province bordering directly on the Indian Ocean, and one of the areas are worst affected by the tsunami disaster in 2004. The reference data shows that the potential of wind energy in the West Aceh region on average is quite varied, which is the lowest of 3.4 m/s to the highest speed of 5.8 m/s. The results of tests on the turbine blades before and after optimization provide increasing the ability of the turbine to produce energy and mechanical power. Based on the characteristics of the rotor rotation, the highest rotation data that occurs on the blades before the optimization is 316.6 rpm, and the highest rotor rotation on the blades after optimization is 361.3 rpm. Accordingly, there is an increase in turbine capability by 12.4%.
Experimental study of cascaded thermoelectric generators with differences in focal length using LED lights energy radiation
Authors: Muhtar Kamaludin Tutang , Awal Syahrani S , Danny Syamsu W , Basri  , Mustofa  
Published: December 2020

Abstract
The length of concentration focus to the cascaded thermoelectric generator (TEG) module determines the power of the output along the entire surface of the heated side receiving the thermal radiation. LED-type (Lighting Emitting Diode) bulb with low power 10, 15, and 20 Watt shown that the emitted lights also contain the thermal that can generate electricity on the TEG. The experiment results show that the 20 Watt lamp with a concentration focus of 110 mm has the highest power and efficiency (2.5%), while the efficiency of 15 and 10 Watt bulbs is 1.2 and 1.6%, respectively. The significant amount of bulb power used by consumers today has the potential to be the source of new and renewable energy to produce electricity. Although the amount of power still small, it can be used to charge mobile phones and power banks.
Biodiesel characteristics of tuna fish bio-oil waste in the transesterification process with variation of reaction time and stirring speed
Authors: Rosyadi I , Caturwati Ni Ketut , Satria Dhimas , Haryadi  , Muzaky  
Published: December 2020

Abstract
Waste from fishery production from canned fish production in Indonesia is very abundant, this waste can be used as raw material for making biodiesel. In this research, the production of biodiesel from tuna oil waste is carried out through the transesterification process. The purpose of this study was to determine levels of Free Fatty Acid, the effect of reaction time and stirring speed on the transesterification process on the characteristics of biodiesel. Fixed variables used consisted of methanol plus bio-oil in a ratio (6: 1), methanol at a concentration of 98%, reaction temperature of 60 °C, KOH catalyst weighing 3.5 grams, while the independent variable consisted of the time of transesterification reaction and stirring speed. The variation of transesterification reaction time used is 1, 2, and 3 hours while the variation of the speed of stirring the transesterification reaction is 160, 245, and 360 rpm. The optimal conditions obtained were 2 hours reaction time and 360 rpm stirring speed with biodiesel characteristics, namely a density of 849 kg / m ^ 3, viscosity of 3.53 cSt, water content of 0.6%, calorific value of 9,390 cal / gr, flash point 84 ° C, and acid number 3.6343 mg KOH / gr.
The study of corrosion behaviour api 5l steel in sea water using immersion test method
Authors: Saefuloh I , Kanani N , Rukmayadi Y , Noor M I , Yusuf Y , Setiawan I , ula S , Abdullah S , Notonegoro H A 
Published: December 2020

Abstract
API 5L steel, a low carbon steel with a high alloy content, is often used as an underwater construction material or oil and gas pipeline. Banten has a wide sea area and has a long coastline where part of the coastline is used for petrochemical industries. There are three coast areas of Banten, namely Bayah Rangkasbitung, Anyer and Merak, that are used for petrochemical industries. Most of those industries use API 5L steel for underwater construction materials and pipes to channel seawater, chemical compounds, gas and oil. Whereas, seawater will greatly affect the lifetime of API 5L construction steel because it can cause corrosion. The purpose of this study is to analyze the corrosion characteristics of API 5L steel affected by the environment of seawater media and the temperature of seawater in accordance with its natural conditions. The samples of API 5L steel were immersed in seawater media with variation of immersion time of 5, 10, 15 Days and variation of immersion temperature of 20°C, 40°C, and 60°C. In this study, a series of tests were carried out, namely immersion test, weight loss test, and SEM test (Scanning Electron Microscopy). The highest corrosion rate on API 5L steel is 0.39 mmpy which belongs to Merak’s seawater media in the immersion time of 15 Days and the temperature of 60°C, while the lowest corrosion rate on the API 5L steel is 0.013 mmpy which belongs to Bayah’s seawater media with a time of immersion of 10 Days and a temperature of 20°C.
Stress analysis on the frame holder of generator translation motion on horizontal direction for sea wave power plant using finite element method (fem)
Authors: Indriani A. , Hendra  , Yenni S. , Aswata W. , Rispandi  , Hernadewita  , Tanjung A. 
Published: December 2020

Abstract
The generator is a machine component that converts mechanical energy into electrical energy. Generators can be found in power generation systems. In this paper, generators are used on the sea wave power plants [1-4]. This generator works by utilizing the effects of ocean waves that rise and fall so as to push the piston to move in the same direction with ocean waves. The performance of the generator is influenced by the magnitude of the force of the piston, rotors and stator. Stable, rigid and smooth piston movements also can increase generator output performance. The design and material of the generator holder is very influential on the generator stiffness. Generator stiffness includes deformation and stress that occur and can be obtained using the finite element method (FEM) [5-13]. In this paper focus on simulating the generator holder shape horizontal direction and the amount of deformation and stresses by varying frame holder generator shape and inclination (750, 800, 900). In previous studies, the translational motion generator frame holder design is less rigid (stable). From the simulation results, the maximum voltage value (σmax) of von mises is 6,427 MPa, the deflection value is 61.29 mm with 900 generator stand design positions.
Development of drying machine to improve palm sugar quality
Authors: Erwin Erwin , Meutia  
Published: December 2020

Abstract
One variant of palm sugar products is sugar in the form of powder or often called brown sugar, which is of good quality is bright yellow sugar, with a strong special aroma and a uniform and dry crystal size according to (Indonesian nation standardized) SNI 01-3743-1995 maximum allowable water content is 3%. An artificial drying machine is needed to speed up the process of separating the water content in sugar. This machine is designed with a tiered rack with a heating source. The temperature regulation uses thermostat, the way it works is by electrically charged elements to heating air, and directing hot air into the drying chamber by using fan (fan blower) and (exhaust fan) for air circulation. The quality to be achieved in the experiment is sugar with a maximum water content of 3%. Experiments were carried out several times with brown sugar that has been matched in grain size. Drying time is very important, because this time is related to production capacity and energy consumption. The remaining water content is less than 3% according to the needs of the planning, the tool is functioning properly.
Improvement of insurance agents performance using data mining in OV agency
Authors: Habyba A N , Fitriana R 
Published: December 2020

Abstract
One problem that occurs in the insurance industry is the high turnover rate of insurance agents. It makes many companies must pay a large fee for the recruitment and training of new agents. OV Agency had high insurance agent turnover rate. This company wants to improve the agents performance to avoid the turnover. This research aims to identify prospective insurance agents who have better performance at recruitment process by using classification task of data mining. There are three classification methods were used . They were decision tree (J48), Neural Network (MLP) and Naive Bayes. Based on the result, MLP has the best average accuracy value 84.2% and ROC area value 0.87 (good classification). MLP was chosen to predict the 25 insurance agent candidates and 3 agents were selected because they entered class A (better performance) in all performance criteria. The prediction results show that three agents are men, aged 25-32 years old, divorced, senior high school education and master degree, work status in other companies, and have work experience of 0-3 years. The OV Agency can consider these result in new agent recruitment process.
Optimization of bi-objective permutation flow shop scheduling with electricity cost consideration
Authors: Kurniawan B , Fujimura S 
Published: December 2020

Abstract
Increasing energy demand can create undesired problems for many governments worldwide. Several policies, such as time-of-use (TOU) tariffs, have been put in place to overcome such demand. The TOU policy’s objective is to reduce electrical load during peak periods by shifting the use to off-peak periods. To that end, this paper addresses the bi-objective permutation flow-shop scheduling, minimizing total weighted tardiness and electricity costs. We propose a meta-heuristic algorithm based on SPEA2 to solve the problem. We conducted numerical experiments to evaluate the efficacy of the proposed algorithm by comparing it with NSGA-II. The results show that the proposed approach was more efficient compare with NSGA-II.
Knowledge base integration management system quality, safety and environmental to improve organizational performance in construction company
Authors: Apriyati Retno , Latief Yusuf 
Published: December 2020

Abstract
Development in Indonesia showed high progress in the economics but had low progress for social; institutional; and in environmental sectors. Furthermore, Indonesian Construction Company still inhibited by low competitiveness; along Safety system management application; safety record and bad occupational health. Based on Indication in above, it’s necessary to apply an integrated management system between Quality, Safety and Environmental for manage the projects construction. The Implementation of an integrated management system, it’s necessary to improve with knowledge base Integration Management System; due to accelerated targets achievement of integration and to learned cause of the failure of integration aspect. Therefore, this research aims to validated Knowledge Base Integration Management System of Quality, Safety and Environmental to improve organization’s performance on Construction Service Company. This research was conducted with case studies and expert validation for the integration model, objectives and risk relationships.
Design and analysis of cell phone case from recycling plastic bottle
Authors: Benhardy M T A , Solihin A , Primaseta E F , Sahroni T R 
Published: December 2020

Abstract
Recognizing the large amount of plastic waste produced by humans today, recycling is one solution to reduce the accumulation of plastic waste. This study aims to analyze the recycling of HDPE (High Density Polyethylene) plastic waste into cell phone cases. This study compares the strength of recycled plastic cell case with other materials that are often used for cell phone cases in general. The methodology of this paper begins with the development of new 2D and 3D cellphone cases, and for processing with injection molding. The parameters are focused on the strength of the material. The simulation is presented using Autodesk Inventor with free fall analysis, and presented stress, displacement, main stress and strain. The results show that the results of stress analysis and material comparison between HDPE and other materials do not show significant differences in other words HDPE can be used as an alternative material for cell phone case materials.
Minimize the potential failures in the wire rod production process using six sigma and multi attribute failure mode analysis method
Authors: Ulfah Maria , Ekawati Ratna , Amalia Nafila 
Published: December 2020

Abstract
Wire rod mill (WRM) plant is one of the factories in Company X that produces wire rod. In 2018 and 2019, WRM was recorded producing high quantity of rejected product exceeding the set standard. This study deploys systematic problem identification and improvement to the process. The methods used was Six Sigma method to evaluate current condition and process capability, followed by Multi Attribute Failure Mode Analysis (MAFMA) with Grey AHP approach to identify root cause and weighted failure process that will be put into priority of improvement. Based on the research results, the sigma value obtained is 4.297503 o with DPMO value is 2,928.626. Improvements to the five highest of the causes of process failure is to improve the state of bearing roll, roll entry, hydraulic valve, an improvement on roll adjustment and improvement of inter-roll partings. It was concluded that the potential causes that the hot button bearing roll has the highest weight is 0.94569, so making it a top priority improvement.
Analysis of benzene exposure considering workers characteristic in the oil and gas industry
Authors: Attaqwa Yusita , Mahachandra Manik , Prastawa Heru 
Published: December 2020

Abstract
Operations and processes in the oil and gas industry have hazardous chemicals. Hence the possibility of having a work accident is high. Chemicals that exist are produced by activities related to the oil and gas industry processes, one of which is benzene. Because it has a severe impact on occupational health and safety, benzene exposure must be measured. Measurements were run through risk analysis to assess Hazard Index (HI) and make predictions of benzene exposure by focusing on the characteristics of workers, which can worsen the effect of the exposure. This study elaborated on several workers’ characteristics from a literature study’s human factors point of view. These characteristics were smoking, age, type of task, personal protective equipment use, exposure duration, regulations, hand washing habits, length of exposure, and nutritional status. Literature study results showed that regulatory characteristics, handwashing habits, and length of exposure were worsening the benzene exposure to workers. The other factors were in between agreed and disagreed in worsening the benzene exposure. These results perform as a base study in the further benzene analysis of oil and gas end distributor.
Evaluation criteria and ranking supplier raw materials waste paper with the methods ahp and topsis (case study paper company in west java)
Authors: Sayuti Muhamad , Akda Zahrotul W , Perdana Robin 
Published: December 2020

Abstract
The study is done at a paper company in west java by doing evaluation of waste paper supplier of raw materials with the aim of gaining evaluation criteria supplier and ranking supplier. The process of making evaluation criteria supplier is done by using the method hierarchy (AHP) analytical process and ranking with the approach of the supplier technique for order preference by similarity to (TOPSIS) solution of a problem. according data processing by using both the main criterion used this method produced 6, the quality criteria, delivery, the price of, resources, service, and company management and putting quality criteria as the criteria with the weighting for 30,7 % of as much as. While the supplier of ranking. the best supplier PT. CMN and PT. AMN supplier as the worst alternative supplier of 5. Made with a model evaluation criteria and ranking supplier is expected to supplier evaluation process useful for other types of businesses the same paper companies.
Optimization of supply chain operation cost and gas usage quantity using non-dominated sorting genetic algorithm II (NSGA-II) Method
Authors: Ridwan A , Bahauddin A , M Naufal R P 
Published: December 2020

Abstract
ABC plant is one of seven plants in XYZ industry which produce Cold Rolling Coil (CRC) and Cold Rolling Sheet (CRS). The problems faced by ABC plant in its supply chain network are the high overall costs of supply chain operations and the quantity of gas usage. The characteristics of this problem consist of more than one objective, the best method for solving this problem called multi-objective optimization. This research is aim to identify the decision variables that will be optimized and determine the optimal quantity of each decision variable using NSGA-II method. The parameters used in this research are the population size of 50, crossover probability with range 0.1-0.9, mutation probability 0.1 and 0.2 also the number of generation 50 and 100. The result shows that the selected parameters for this research are the crossover probability of 0.7, mutation probability of 0.1, number of generation 100. Four decision variables that are optimized, namely CRC produced (Lite, Medium, and Heavy) and CRC stored with the quantities simultaneously are 40,918, 112,479, 173,758, and 43,209 tons. This result will assist the ABC plant in minimizing the overall cost of supply chain (124,532,272 USD) and the quantity of gas usage (39,634,749,440 Kcal).
Implementation of lean manufacturing using waste assessment model model (WAM) in food industry (case study in usaha mikro kecil menengah (umkm) xyz)
Authors: Febianti E , Irman A , Juliana M 
Published: December 2020

Abstract
The waste occurring on the production line leads to inefficient production and loss to the company. Based on the results of brainstorming with UMKM XYZ owners, it is known that there is a reduction in the production time of up to 20% of the production time is 4 hours per cycle. The waste that occurs will be identified and minimized using methods of Waste Assessment Model (WAM) and Fault Tree Analysis (FTA) for proposed repairs. The purpose of the research is to calculate the percentage of waste and know the dominant waste, knowing the repair to minimize the largest waste, and calculating the amount of production time. The results showed that the dominant waste was the transportation of 17,09% with improvements was to change the layout of the production, change the design of tools, expand the production floor, implement a more integrated fixed contract system and minimize the production process. The average time that can be minimized for donut products, bread, and molen is 490 seconds per cycle or 8.167 minutes per cycle.