bluuebunny/crossref_metadata_2025_split huggingface dataset:
Chacha stream cipher implementation for network security in wireless sensor network
Authors: Muhammad F , Ahendyarti C , Masjudin  
Published: December 2019

Abstract
In the 4.0 industrial revolution, technologies are designed to be able to connect to the internet. These technologies should be able to exchange data between them using sensors and others. One of the ways to send it is by the wireless sensor network. However, involving the internet in exchanging data needs security guarantees. Three things must meet in network security, that is confidentiality, integrity, and availability. Cryptography use for the confidentiality of the information that will be sent by the user. In this research will be using the symmetric cryptography for network security on wireless sensor networks. In addition to network security, symmetric cryptography method will be used also consider energy efficiency on a wireless sensor network. Chacha stream cipher as symmetric cryptography will be used as a method of messages encryption. Experiments in this research used NS-3 as a network simulator. Results of the tests show that the purpose method has a computation time of 0.2385 ms and the second-fastest after the rabbit cryptographic process. Chacha LR WPAN simulation process has a computation time of 17.6199 ms.
Design of wireless power transfer using flyback converter and tesla coils
Authors: Martiningsih W , Otong M , Reppi H W 
Published: December 2019

Abstract
This research to design a wireless electric power transfer system by utilizing a used TV flyback transformer. Flyback TV is used as a Tesla coil power supply with a flyback converter circuit. The principle of wireless in this study is the resonance of electromagnetic waves produced by the Tesla coil. Experiments are carried out by providing switching frequencies and changing distances. The results showed that the power produced was 31.24 W (highest) at a switching frequency of 6.8 kHz and at a distance of 10 m. Efficiency at the same condition is 56, 768%.
Analysis of coal allocation on steam power plants and the effect of multi-suppliers, demand and time variations on coal’s safety stock
Authors: Jason A , Asih A M S , Yuniarto H A 
Published: December 2019

Abstract
Fulfilling coal-based electricity needs has its own challenges. It is because coal supply chain is a complex network in which various coal specifications could be supplied by more than one supplier. Uncertainty in demand and lead-time also complicates the situation. Moreover, each supplier can offer different price for the coal and different transportation. This paper empirically examined the coal allocation for steam power plants in Indonesia. There are 12 coal suppliers and 25 power plants as the subjects of evaluation. In order to find the set of suppliers and its allocations, optimization model that minimizing the purchasing and transportation cost was developed. The output from the optimization was then used as an input to find the level of safety stock, order quantity, and reorder point in each plant that can prevent the occurrence of stock out. A sensitivity analysis was also carried out to understand the impact of variation in demand and lead-time. The results show that lead time variations needs to be considered more in determining safety stock level rather than demand variations, including when having multi-suppliers.
Organization clustering airports using K-Means clustering algorithm
Authors: Trenggonowati D L , Ulfah M , Ekawati R , Yusuf V A 
Published: December 2019

Abstract
One of the right management quantity of human resources is through the establishment of an efficient organizational structure in accordance with the conditions of the airport. PT. Angkasa Pura II (Persero) is one of the State-Owned Enterprises engaged in the business of airport services in the western region which currently has 16 airports. With the growing needs of air transportation, PT. Angkasa Pura II is projected by the Ministry of Transportation to become the manager of 21 airports. With an additional projection of 5 airports, PT. Angkasa Pura II (Persero) requires projections clustering for all 21 airports to be managed in order to form the right organizational structure. Therefore, 5 clusters are formed using the k-means algorithm. This method is used because it is one of the partitional clustering methods. Partitional clustering method was chosen because it was known that the company wanted to form 5 clusters. In this study clustering was carried out based on variable aircraft movements, passenger movement, cargo, area, terminal area, runway, EBITDA and revenue. The result is obtained in cluster(1) there is 1 airport, cluster(2) there are 6 airports, cluster(3) there are 5 airports, cluster(4) there are 2 airports and cluster(5) there are 5 airports.
Design of strategic risk mitigation with supply chain risk management and cold chain system approach
Authors: Ridwan A , Santoso M I , Ferdinant P F , Ankarini R 
Published: December 2019

Abstract
Marine fish commodities are perishable food. Many risks that can damage the catch of marine fish includes not stored and carried in low temperature conditions. Therefore, risk mitigation is required to reduce the risks that occur. This research aims to identify, analyze, evaluate and design the strategic risk mitigations with supply chain risk management and cold chain system approach. The supply chain risk management consists of: risk identification, risk analysis, risk evaluation, and risk mitigation in the entire of supply chain. The cold chain system is carried out from upstream to downstream in the activities of fishermen at the Karangantu Fisheries Port, Serang, Banten. The results are identified 16 risk events, 5 priority risk agents, and 5 proactive actions. The proposed strategic risk mitigations are: counseling on how to handle good catch results; adding the Port Operational Section in the field of Fish Demolition Inspection; giving penalties for fishermen who do not handle catching results properly; preparing to unload the results of fishing when the ship is on the dock, and proposing the procurement of fishing aids to the Ministry of Maritime Affairs and Fisheries.
The optimal design of electric cable conductor and insulator resistance using Taguchi multi-responses method
Authors: Parkhan A , Kwintanada H A , Widodo I D 
Published: December 2019

Abstract
The quality of the electrical cable can be determined by resistance of insulator and conductor. There are some factors influencing the resistance of insulators and conductor. In this research, design of experiment, based on Taguchi method, is used to improve cable resistance. Because of having two responses, the optimization process uses the TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) method. The result showed that the combination of levels of these factors could produce average insulator resistance of 95.70 Ω (increasing by 8.90 Ω), and the average resistance of the conductor 11.908 Ω (decreases down by 0.057 Ω). This optimal condition was obtained by combining the levels of factor A1 B1 C1 D2 E2 F1 G1, i.e. the system works at 140 rpm cabling speed, non core extruder speed 2.9 m/s, core extruder speed 2.9 m/s, cooling water temperature 20 °C, copper elongation 150 - 250, temperature for melting PVC 160 °C-165 °C and PVC density 154, 95-155 kg/m3. Sensitivity analysis indicated that weighting of product quality attributes were not sensitive to optimal factor level combinations.
Minimizing makespan on flow shop scheduling using Campbel Dudek and Smith, particle swarm optimization, and proposed heuristic algorithm
Authors: Irman A , Febianti E , Khasanah U 
Published: December 2019

Abstract
Scheduling is defined as the process of allocating resources over time to perform a collection of tasks within a certain period of time. PT KHI Pipe Industries in Cilegon Indonesia, has been producing high quality longitudinal and spiral weld steel pipes. The company uses FCFS (first come first serve) rule for scheduling their jobs, which means that job processing based on the first incoming prioritizes orders. In October 2018 there was delay in their production, namely 1771 pipes are still in work in process (WIP) of total demand is 6, 296 pipes. Based on these problems, this research tries to determine a better production scheduling by getting minimum makespan as scheduling performance. Heuristic and metaheuristic methods used in this research for minimizing the makespan, there are Campbell Dudek Smith (CDS) for heuristic and Particle Swarm Optimization (PSO) for metaheuristic. We also proposed a new heuristic algorithm for this problem. The results show the makespan of each method, there are CDS method: 742.87 hours, PSO method: 711.96 hours, Proposed Heuristic Algorithm method: 694.64 hours, and existing production scheduling of FCFS rules is 746.43 hours. Based on the results, the Proposed Heuristic Algorithm has smaller makespan than the others.
Perception of taxi online service users towards women drivers based on Kano models
Authors: Ferdinant P F , Wahyuni N 
Published: December 2019

AbstractMany online taxi providers are similar with a variety of quality services, so that business competition is getting tougher. But there are still many consumers who complain about operator online transportation, especially related to female drivers. So, from that researchers want to conduct a study entitled perception of female driver online services with the Kano method. The purpose of this study was to determine the user perceptions of the quality of online taxi services for female drivers based on performance and interests, knowing the attributes that must be improved, maintained or reduced by priority based on passenger perceptions of female drivers. The sample of this study was 133 passengers who had used the online taxi application. This study produces 3 dimensions, namely appearance, soft skills and hard skills which are divided into 9 service attributes. Based on data processing obtained there are 5 performance attributes, 2 indifferent attributes and 2 attractive attributes, there are the driver’s appearance is neat, clean fragrant, and the driver knows the location of the destination address. From Kano evaluation table is obtained average coefficient satisfaction 5.785 and average coefficient dissatisfaction -4.402. The average functional and dysfunctional value is 2.906 and 2.355.
Analysis of recycled tire rubber modified bitumen in Albania for quality of the road construction
Authors: Dhoska K , Markja I , Pramono A 
Published: December 2019

Abstract
Over the last decade, air pollution in the Republic of Albania is in a crucial moment and an actual problem that effect on human health. Many of the problems has been noticed in the industrial cities and urban zones where the number of industries and road transport has grown rapidly. One of the largest environmental impacts comes from the landfilled and burning of the waste tires. This problem has made the government to support some companies for building up the recycling industry of the waste tire in Albania. The Recycled Tire Rubber have been used in many fields such as agricultural uses, sport applications, civil engineering, rubber modified asphalt applications etc. Therefore, different parts of the world have used rubber modified asphalts where the benefits were being more widely experienced and recognized. Based on it, our paper will be focused on the asphalt mixtures produced with Recycled Tire Rubber Modified Bitumen’s (RTR-MBs). The analysis of penetration, softening point and Marshall Test will be described in this paper. Our proposal can reduce environmental impact from the waste tires and improving the quality of the road constructions in Albania.
Characteristics of aluminum AC4B with variations of silicon nitride reinforced composite produced by a stir casting process
Authors: Faisal A A , Zulfia A 
Published: December 2019

Abstract
At present, the combination of metal matrices and ceramic reinforcement as composite is popular for creating materials with good mechanical properties. Aluminum is used as a matrix because of its lightweight, ductile, and low melting point. In this reserach, the effect of adding silicon nitride on characteristics of Al AC4B is studied. Five sample variations were made based on fraction volume percent (1, 3, 5, 7, 10) which were fabricated through stir casting method. In the fabrication process the magnesium element was added to increase the wettability, TiB grain refiner, and modification with strontium element. The samples made got destructive, tensile, impact, and hardness testing to determine the mechanical properties of the composite. Observation of phases, elements, compounds and microstructure was done to see the distribution of reinforcing particles in the aluminum matrix and the estimated phases formed. The results showed that the optimum tensile strength of variable occurred at the addition of 1% volume of silicon nitride with a strength value of 104.94, and the optimum hardness value was at the addition of 3% Si3N4, which was 44.8 HRB. The phases formed in the composite were Mg2Si, Al2Cu, β-Al5FeSi, and π - Al9FeMg3Si5 phases.
Synthesis of Ag nano-chitosan in lactic acid solvent by irradiation method
Authors: Rekso G T , Sudradjat A 
Published: December 2019

Abstract
Colloidal Silver Nanoparticles were synthesized by Gamma ray irradiation in aqueous lactic acid solution containing chitosan as stabilizer. The aim of this research is to know the effect of irradiation dose and concentration of chitosan in the formation of Nano-silver. Silver Nitrate of 2 mM is dissolved in the chitosan solution. The effect of chitosan concentration which varied 0,.3%, 0. 5%, and 0. 7%(b/v) were irradiated with gamma ray at dose of 5, 10 and 15 kGy. The formed of silver Nano were identified using UV–Vis spectrophotometer, particle size analyzer (PSA) and FTIR. The result shows, the concentration of chitosan (0.3 – 0,7%) in the irradiated solution also considerably affected the silver Nano particles size which decreased with increasing of irradiation dose. Due to the unique features of the processing procedures, thus γCo-60 ray irradiation has been considered as a suitable method for synthesis of colloidal silver nanoparticles.
Utilising the See-and-Follow Method for Enhancing Robot Learning Ability
Authors: Anshar Muh , Halim D , Yohannes C 
Published: December 2019

Abstract
The rapid growth and development of robots today can be reflected from variations of research in the robotic field, and one of them that has been flourishing in the area is robot learning. Learning is one of the most important aspect needs to be implemented in a robot that allows the robot to improve its performance through experience-driven knowledge. There are several forms of learning methods and one of the most favourable approach is the see-and-follow method. This paper aims to develop robots that can learn to do the same movements with human movements through the see-and-follow method. Kinect sensor is used as a technology to support the process of recognizing the human body and its movements; which later to be transformed into the robot dimension. The results show that Kinect sensor can be used to measure the distance and recognize the joints of the human body along with the movements produced within a distance of 1 meter to 3.75 meters with an average reading error of 0.04 meter. The average delay time for the whole movement is 2.6 seconds. The average percentage of similarity between robot and human movements for the whole movement scenarios is 93.45%. Hence, high level of similarity in movement concludes that the method of see-and-follow successfully increases the learning skills of the robot.
Designing Board Games to Foster Tolerance
Authors: Suprapto M H , Hartanti L P S , Latumahina R 
Published: December 2019

Abstract
Today, tolerance for diversity in society begins to erode. The low tolerance can threaten the integrity and unity of the Unitary Republic of Indonesia (NKRI). Tolerance towards diversity should be inculcated since childhood. One way to develop tolerance in children is to use the playing method. This study aimed to develop children’s play equipment that can increase children’s tolerance for diversity in society. One type of children’s play equipment is board games. This board game is expected to educate children to be more tolerant of various differences in society such as: ethnicity, race, religion, and class. This increase in tolerance will support the unity and unity of the Indonesian people. The method used to design this board game was a creative method. Data collection was done by conducting surveys, observations, and literature searches. Audience target characteristics are children aged 6-10 years and live in big cities in Java such as: Jakarta, Bandung, Surabaya, and Semarang.
Comparison of Accuracy in Extreme Learning Machine Based on Hidden Node Structure Variation for Lung Cancer Classification
Authors: Tandungan S , Indrabayu  , Nurtanio I 
Published: December 2019

Abstract
This paper present Extreme Learning Machine to classify lung cancer nodules. Lung cancer is a type of lung disease that requires fast and specified treatment. Skills, facilities and multidisciplinary approach are required for diagnosing lung cancer. The use of Computed Tomography (CT) to detect lung cancer can reduce the number of deaths from lung cancer, but it increases the workload of the radiologist because CT screening process produces many medical images. Computer systems become one of the potential solutions to help radiologists solve the problem. Extreme Learning Machine is an algorithm that able to provide good generalization at fast learning time which is essential to help radiologists in analyzing lung cancer nodules images. In this paper, there were 877 nodules extracted from LIDC-IDRI dataset. All nodules used in this experiment consist of lung cancer nodules that diagnosed to four different level of malignancy and annotated by up-to four different radiologists. The result shows Extreme Learning Machine achieve 85.17%, 85.58% and 84.87% in accuracy and Matthew Correlation Coefficient 0.755, 0.762 and 0.749 using Hardlimit, Radial basis Function and Triangular Basis function, respectively.
Ultimate Strength Analysis of FPSO Hull Girder Under Longitudinal Bending
Authors: Alie M Z M , Iriani R , Juswan  , Ramadhan M I 
Published: December 2019

Abstract
Ship and offshore structures have become the key for the development of the offshore world. Production and processing equipment can be placed on a platform, ship and/or barge structure called FPSO (floating, production, storage, and offloading units). The FPSO’s hull works like a beam and deforms in the vertical plane. In this case, weight and bouyancy are not normally distributed and wave loading. The most important aspect of FPSO structure is the materials and structural strength used in the design. The critical condition of FPSO is when the structure is under the operation so that the structure needs to be analysed for the design requirement. In the present study, the ultimate strength of FPSO hull girder under longitudinal bending moment is analysed using numerical approach. The nonlinear finite element analysis is adopted to handle the calculation. For the simple case, the one-frame space and the fully cross section of FPSO are modeled. The quadrilateral shell element of the nonlinear method is used for meshing. By performing the boundary condition with the Multi Point Constraint (MPC) is applied where the neutral axis located. The vertical bending moment is also placed at this point (MPC) and it is connected to the all nodes at both sides of the cross sections. The ultimate strength of FPSO is calculated only for intact in hogging and sagging conditions. The ultimate strength analysis is represented in terms of the moment-curvature relationship for hogging and sagging. The result obtained the nonlinear finite element analysis is compared with Smith’s method including their collapse behavior. It is found that the comparison result of the ultimate strength is about 8.9% and 10.1% in hogging and sagging condition, respectively. It is shown that the nonlinear finite element analysis is in good aggrement with the analytical solution performed by Smith’s method.
Study on the Characteristics of Maneuvering Ferry Vessel as Effect of the Sea Waves
Authors: Hasbullah M , Paroka D , Rosmani  , Hanisa  
Published: December 2019

Abstract
Wave is one of the natural phenomena that gives effect to the cruise ship. The energy produced by the wave is very large that makes the ship turn directions. Therefore the turn has an error coordinates of the starting point of a ship. Deviation of the coordinates has made a further distance and increase fuel consumption, so the operational costs being higher. The research would predict the drift angle, the ship speed and rudder angle to be used after the ship got the influence of wave by taking into account the motion of surge, sway, yaw. Simulations are performed by using Delphi software, with variations of the wind height of 0.5 m, 1 m, 1.5 m, and 2 m, the wave flatness of 0.01, the speed of the wind of 0 and 10 m/s and incoming wave direction 0° - 180° on the side of the ship. It is obtained that the biggest of drift angle happened on 50° wave direction. The biggest of rudder angle happened on 110° wave direction while that fastest ship speed happened on 160° wave direction.
The Effectiveness of PAC and Chitosan Usage in Jeneberang River Raw Water Treatment
Authors: Bakri B , Selintung M , Hamdani R N , Ihsan M , Arai Y 
Published: December 2019

Abstract
Raw water treatment commonly uses effective coagulants with the purpose to reduce the concentration of particles causing turbidity. One of the most popular coagulants is poly aluminum chloride (PAC) with some advantages. It has low corrosiveness. Formed floccules are relatively easier to detach and pH result is in moderate level. Another alternative chemical substance as a coagulant is Chitosan, a high degradability, non-toxic substance, with high market availability. Chitosan usage produces small amount of sludge and no cationic residue. This research intended to analyze the comparison of effectiveness of PAC and chitosan as coagulants for raw water treatment in Jeneberang River. Samples were taken in two locations; at the long storage (first location) and at the ground sill (second location) in Jeneberang River. Samples were analysed at Water Quality Laboratory of Environmental Engineering Department, Engineering Faculty, Hasanuddin University. For first location, PAC has 94.57% effectiveness to reduce turbidity when compared to as for chitosan which gained 69.67% effectiveness in reducing turbidity. Therefore, the results show that PAC is more effective and efficient as a coagulant for raw water treatment in Jeneberang River when compared to Chitosan.