bluuebunny/crossref_metadata_2025_split huggingface dataset:
Utilization of augmented reality technology as a learning media for early childhood
Authors: Anggara M R , Azizah N , Kustiawan I 
Published: May 2020

Abstract
The purpose of this study is to describe the use of augmented reality technology as a learning medium for early childhood. This study used descriptive qualitative method. Data collection techniques using observation and interviews with 4 early childhood. The results of this study indicate that the use of augmented reality technology as a medium of learning in early childhood can provide an understanding of an object concretely, improvisation of sounds and images that support the learning atmosphere, and be able to attract the attention and focus of children in school. In addition, a lot of potential is developed when implementing augmented reality technology. It is hoped that the use of this technology can be applied to early childhood as a form of learning media innovation.
Design of Graphical User Interface (GUI) for a remote laboratory on programmable logic controller experiments
Authors: Hambali M I , Haritman E , Pantjawati A B 
Published: May 2020

Abstract
Remote Laboratory is the use of telecommunications technology to conduct remote experiments. In this study, remote lab operates through the Graphical User Interface (GUI) display, where interactions are carried out online through computer devices. This GUI is designed to support experiments on Programmable Logic Controller (PLC) and must be able to facilitate the user and provide feedback directly to confirm that an action has been taken. This GUI design includes color, image, icon, label, and text navigation to present information to users when needed. This research was carried out through several stages, namely the design of the GUI by using Microsoft Visual Studio software, coding and testing of appearance and function. The results showed that the GUI design met the desired specifications, both in appearance and function. From the users testing, the GUI design get positive responses from all users.
The use of smartphone on learning activities: Systematic review
Authors: Firmansyah R O , Hamdani R A , Kuswardhana D 
Published: May 2020

Abstract
This article aims to analyze the use of smartphone technology in education field, with a focus on exploring the effects of smartphone and its software application use in learning activities. This study was conducted using the method of systematic literature review through 3 stages, namely: searching related journals through an online database of several publishers, analyzing the search results journals and dividing them into 3 groups according to the research objectives, and describing the results of the analysis in the form of scientific and logical arguments. From the results of the study it can be concluded that smartphone is significantly useful in student-centered learning, can be used in various disciplines, and at all levels of education, and there are various smartphone applications that can be used for learning needs.
Exhaust temperature and peltier element optimization of thermoelectric generator output
Authors: Setyowidodo I , Sutanto S , Mufarrih A , Sholehah I M 
Published: May 2020

Abstract
The purpose of this study are to obtain (1) the optimum exhaust temperature for the highest voltage output, (2) the optimum number of peltier elements for the highest voltage output, (3) the optimum peltier circuit type for the highest voltage output. The analysis were done to obtain the optimum Seebeck coefficient as a representation of the thermoelectric generator performance. The design of this study is an L20 orthogonal matrix with three replications using a factorial design. The independent variables varied were exhaust temperature and number of peltier elements, while data analysis using ANOVA Two Way. Based on the results of the research data it can be concluded that the furnace wall temperature affects the TEG current output. The optimal wall temperature was 480 °C that produces a TEG current output of 168 mA. This indicates an increase in the temperature of the used metal smelting furnace walls cause the increase in the TEG current output. Meanwhile, the number of peltier elements influenced the TEG current output. The optimum values combination of exhaust temperature and peltier’s number which cause the highest TEG output voltage are 480 °C and 6 (six) peltier element in series circuit, respectively.
Optimal distributed generation placement to reduce power loss using Particle Swarm Optimization method
Authors: Firmansyah M G , Mulyadi Y , Hasbullah H , Saripudin A 
Published: May 2020

Abstract
In electrical power systems, distribution networks have considerable power losses compared with the other parts of electrical power systems. This caused by the distance of power plant to the load center. The high value of power losses causing disadvantage for the electricity provider company. This study aims to reduce power losses in the MLBC feeder distribution network by erecting the distributed generation. The optimal location for erecting distributed generation sought by using the Particle Swarm Optimization (PSO) method. Before distributed generation erected in MLBC feeder distribution network, the power losses’ value is 128.1 kW. Locating the most optimum location for erecting the distributed generation is using the particle swarm optimization method, bus 13 on the MLBC feeder distribution network was the optimum location for distributed generation erection. Hence, the loss value from load flow simulation is 67.5 kW or 60.6 kW for power loss reduction after distributed generation installed on bus 13.
Reliability impact and assesement of distributed generation integration
Authors: Sidik R D N , Mulyadi Y , Trisno B 
Published: May 2020

Abstract
Distribution network is a part of an electric power system that has more intensity of failure than other parts of the power system. This is due to the close distribution network at the load which results in more factors that can be the cause of the failure. The more interference, the worse the reliability index. One effort to improve the feeder reliability index is by connecting Distributed Generation (DG) to feeders. In this study the effect of DG on the reliability index of Malangbong Chocolate (MLBC) feeders will be observed. MLBC is a power secondary substation in the district of Garut in West Java province, Indonesia. The method used in this study is to simulate the reliability of MLBC feeders before and after connecting with DG using the ETAP Power System 16.0 software. The results of the two simulations are then compared to see the effect of DG on the system reliability index. The results show that the SAIFI values before and after using DG connected to bus 4 and bus 5, are 3.8865 and 1.1802 per customer respectively. Whereas the value of SAIDI are 4.3079 and 1.1079 hours per customer in one year respectively. So it can be concluded, the use of DG on feeders can improve the reliability index of the system.
Development of remote laboratory based on HTML5
Authors: Nugraha A T , Haritman E 
Published: May 2020

Abstract
The Laboratory is an important of means for engineering students and the researchers to do various kinds of experiments. Amount of equipment and time to be able to access the laboratory is limited. therefore, in this research developed of remote labs that can be accessed via web anytime and anywhere as long as available internet network. This is in line with the development of Industry 4.0 which introduces cyber physical technology based on internet or wireless network. This technology is not only used for communication but also includes controls and remote control. The results of this research showing the remote lab can be accessed by web via internet and via localhost and compatible with web browser as google chrome, Mozilla, opera etc.
Designing a microcontroller based electric physics experiment board “Mini Serial Lab 01”
Authors: Husni M , Purnama W 
Published: May 2020

Abstract
The importance of STEM (Science Technology Engineering and Mathematics) because of technology development are increase and STEM education’s media are developed. Many company offer STEM education’s media which integrated to data acquisition system and integrated to computer. But not every school or campus can afford that media because of price. To handle this problem in this paper, explain how to make such a STEM education’s media which microcontroller based electric physics experiment board which integrated to data acquisition system. There are 5 experiments on this physics experiment board, the experiments are Series Load, Parallel Load, Series and Parallel Load, RC Natural Response, and Electric Induction. There are three main components which is: hardware, software, and firmware. After three components established and integrated to test the system we do some experiment and then compare the result from measurement and the result from equation. The conclusion was the result from the measurement was close from equation.
Prosthetic hand with 2-dimensional motion based EOG signal control
Authors: Pratomo M R , Irianto B G , Triwiyanto T , Utomo B , Setioningsih E D , Titisari D 
Published: May 2020

Abstract
A prosthetic hand is an artificial device that resembles a human hand which can help the human with a physical disability. Previously, the development of a prosthetic hand is designed in various method, from passive to bionic. Electrooculography (EOG) is a technique for measuring potential differences between the front (positive pole formed by the cornea) and the back (negative pole formed by the retina) of the eyeball which can be used to detect eye movements. The purpose of this study is to design a prosthetic hand with two degrees (2D) of freedom using EOG based control. This system consists of electrodes, EOG amplifier, Bluetooth transmitter-receiver, servo motors, and hand prosthetics. In this study, the system will recognize the eye movements, namely front, right, left, up, and down. The system will recognize the motion based on a threshold value. In the hardware implementation, the system was composed of five electrode sensors which installed around the eye, instrumentation amplifier, high pass filter, low pass filter, noninverting amplifier, summing amplifier, a notch filter circuit, and Arduino UNO microcontroller. In EOG data acquisition, this study involved ten healthy subjects. After the evaluation with five trial for each motion, the error for each eye movement is 0%, 0%, 36%, 4% and 16% for right, left, top, bottom, and front, respectively. This study provided an alternative method to control a prosthetics hand with good performance.
Optimal Power Flow the Sulselrabar 150 KV system before and after the penetration of wind power plants considering power loss and generation costs
Authors: Ilyas A M , Suyuti A , Gunadin I C , Siswanto A 
Published: May 2020

Abstract
Optimal Power Flow (OPF) is to optimize power flow in interconnection systems to decrease production costs and increase system reliability, quality, and stability. This research was conducted on power generation 150 KV systems in South Sulawesi, Southeast Sulawesi, and West Sulawesi, abbreviated as Sulselrabar. The number of buses is 44, 15 generator buses before penetration with the Sidrap Wind Power Plant (PLTB), and 16 bus generators after penetration with PLTB. The method used in this study is Improved Particle Swarm Optimization (IPSO) and Lagrange. The results showed that IPSO showed better results compared to Lagrange and the results of existing systems.
Automatic metal sorting conveyor machine based on Programmable Logic Controller
Authors: Eriyadi M , Mulia S B , Purnomo I R 
Published: May 2020

Abstract
The clothing and food industry had to require for each product which is produced by them is free of dangerous metal. To handle the problem, the industry did anyways to decreasing metal contents that might be involved in the product. One of the methods that the industry able to do is metal sorter automatically system that used to do when the product is on the conveyor. This method is counted so efficiently if we know that the conveyor is used for moving an item from a place to another place by using an induction motor as a mover. This research purposes of presenting an example of a Programmable Logic Controller (PLC) uses as an electronic device that able to control the conveyor metal sorter system automatically. We used a photoelectric sensor to detect an item on the conveyor. Meanwhile, inductive proximity is used to detect metal content behind the item. This research also is written on how this PLC is more efficient if we compared it with using the conventional relay.
Design and realization of (7,4) Hamming code channel encoder trainer using Arduino Mega 2560
Authors: Karostiani N , Pantjawati A B 
Published: May 2020

Abstract
Channel encoder is a part of transmitter block in a digital communication system which is capable of protecting information data from errors by adding parity bits from bits of information. The channel encoder receives bits of information from the source encoder and produces a new code called the codeword. Hamming code is one of the coding mechanisms used to protect information data from errors, with the ability to correct an error. This study explains the design of (7.4) Hamming encoder code channel trainer by using Arduino Mega 2560. The purpose of this research is producing a product that synchronizes a theory with the realization of how the channel encoder blocks work. Important parameters in the encoder channel are information bits, matrix generator, and parity bits. The form of the matrix generator affects the parity bits and the generated codeword. Therefore, the trainer is made and designed that can be used in the form of different matrix generator and qualify of (7.4) Hamming code channel encoder. This trainer is made in two stages: the simulation stage using Proteus 8 Professional and the hardware manufacturing stage. The results showed that the trainers worked in accordance with the theory (7.4) Hamming code channel encoder.
Small Vessel Tracking Based on Multi Gateway LORA for Indramayu Traditional Fishery
Authors: Sumarudin A , Putra W P , Rifai A , Putra A E 
Published: May 2020

Abstract
In this study, we use Lora-based data communication for communication between boats and database management systems for vessel. The maximum distance from the Lora is 10 km, and in order to be able to monitor fishermen along the fisherman’s coast in fishing, it is necessary to have a multi-gateway Lora to increase fishermen’s tracking coverage. The system is built using multi gateway Lora installed on the coast. Devices built with a Lora client are installed on a boat with GPS input, the technique of sending data on the device to the gateway uses a time base with a 1-minute period. To minimize data on the gateway that intersects the range of other gateways, a time flag is made to determine the data at a certain time to determine the trajectory of the boat. The result this research is system-monitoring vessel, which is successfully built and can provide fishing boats along the coast with long-range coverage. Based on experiment, multi gateway can be implemented by creating an identical ID gateway, the Lora client will broadcast to the nearest gateway. The maximum distance obtained is 1.35Km NLOS and to cover 20 Km of beach length is needed 15 gateways.
Design and application of double layer bowtie antenna and single layer bowtie antenna as UHF sensors for partial discharge detection
Authors: Uwiringiyimana J P , Khayam U 
Published: May 2020

Abstract
The reliability of the power system cannot be achieved without good insulation quality of the high voltage apparatus. The Ultra-high frequency (UHF) method has been applied and proven to be accurate in detecting partial discharge (PD) signals emitted from the PD source in the form of electromagnetic waves. This paper discusses the design and application of double layer bowtie antenna and single layer bowtie antenna as UHF sensors for partial discharge detection in air insulation. The PD measurement results obtained by using the designed double layer bowtie antenna were compared with PD measurement results obtained by using the single layer bowtie antenna. The PD characteristics of induced EM waves detected by double layer bowtie antenna and single layer bowtie have been analysed. Based on the simulation results, the double layer bowtie antenna has a minimum return loss values of -31.54 dB and -33.43 dB, with corresponding resonance frequency values of 1.7 GHz and 2.7 GHz, with a total bandwidth of 602 MHz, and corresponding VSWR values of 1.04 and 1.05 while the measurement results by using Vector Network Analyser (VNA) shows that the designed double layer bowtie antenna has a minimum return loss of -20.2 dB, at a resonance frequency of 1.7 GHz, a bandwidth of 576 MHz and corresponding VSWR of 1.2. The single layer bowtie antenna has a bandwidth of 240 MHz, a minimum return loss of -24 dB, at a resonance frequency of 1.28 GHz, and a VSWR of 1.13 based on the simulation results while the single layer bowtie antenna has a bandwidth of 298 MHz, a minimum return loss of -23.32 dB, at a resonance frequency of 1.3 GHz, and a VSWR of 1.14 based on the measurement results by using VNA. The bowtie antennas were designed using the 3D-HFSS software with FR4-epoxy substrate type and later on were printed on the Printed Circuit Board (PCB). The PD measurement data were performed by using the applied voltage level of 7 kV. According to the antennas simulation results, antennas measurement results by VNA and PD measurement results, the double layer bowtie antenna has proven to be more sensitive than the single layer bowtie antenna.
Low interaction honeypot as the defense mechanism against Slowloris attack on the web server
Authors: Fitri N R , Budi A H S , Kustiawan I , Suwono S E 
Published: May 2020

Abstract
Threats and attacks on internet services are in line with developments in internet technology. One of the main risks is Distributed Denial of Service (DDoS). In this paper, we focus on the Slowloris attack which is an open-source DDoS attacker that generally attacks the Apache webserver. Apache is one of the most popular web servers in the world and is still used by many companies. This research presents another way to reduce attacks to the firewalls and load a counterweight by using a low interaction honeypot, HoneyPy. In normal conditions, attack schemes and defense mechanisms are evaluated by conducting experiments. Slowloris attacks cause high traffic because it prevents the socket from closing, so the webserver cannot handle other connections from legitimate users. When defense mechanisms are applied to the network, Slowloris attacks that enter the webserver are minimized because most packets are discarded and directed to the honeypot without the attacker’s knowledge. It seems like the attacker has managed to attack the web server even when the attack becomes slower.
Characteristics of hardness at local propellers with variations of timing by using sandblasting method
Authors: Endramawan T , Sifa A , Dionisius F 
Published: May 2020

Abstract
Sandblasting is one method of surface treatment that aims to improve the characteristics of material properties, such the hardness materials. This process was done by spraying abrasive material onto the surface of the object with the pressure. The purpose of this study was to increase the hardness of local propellers as a result of the sandblasting process. In this study, the material used aluminum alloys in the form of propellers of local fishing boats. While abrasive material used aluminum oxide with size 100 mesh. Then the pressure used 3, 4, and 5 bars with 25, 50, and 75 seconds in shooting times by angle 90. Measurement of hardness value used Universal Hardness Tester by macro-Vickers with load parameters 5 Kgf and indentation time of 10 seconds. The results showed that the longer the shooting time, the hardness of the propeller be increased 32.4% from the material that has not been carried out by the sandblasting process. The factor of time variation and shooting pressure has a significant effect on the results of the hardness in the specimen.
Electrospinning and characterization nanofibers and nano particle of Polyvinylpyrrolidone
Authors: Virginia C , Khasanah A , Jauhari J , Sriyanti I 
Published: May 2020

Abstract
Electrospinning method used to fabricate fibers both micrometers and nanometers scale. Nanofibers of Polyvinylpyrrolidone (PVP) have been developed using an electrospinning method. It is PVP acting as matrix and ethanol analyst as a solvent. We used the same concentrate of PVP I namely 10% (w/v) for three difference molecule-weight materials namely PVP 1.300.000 kg/mol (PVP-1), PVP 360.000 kg/mol (PVP-2) and PVP 40.000 kg/mol (PVP-3). The spinning process of the three molecule-weight PVP could be produced with various parameters, 0.3 flowrate, 10 kV voltage, and 12 cm needle length. Observation using a microscope shows the morphology of each solution (PVP-1), (PVP-2), (PVP-3) will generate large fibers, medium fiber, and nanofibers. The diameter of each fiber is 2620, 1760 and 1380. From the diameter analysis, we conclude that a smaller molecule-weight of PVP will obtain smaller fibers. The FTIR results give an overview of the interactions between PVP molecules that are shown against the PVP peaks. Nanofibers and nanoparticles can be applied in medicine, high-performance air filters, military and medical protective textiles, sensors, advanced composites, photo vault cells, and separation membranes. This study will show the difference form of PVP with the same concentrate for three difference molecule-weight.
The effect of a single quenching double tempering process on the mechanical properties of NiCrMo alloyed steel casting
Authors: Bandanadjaja B , Purwadi W , Lilansa N , Idamayanti D , Putra T R S 
Published: May 2020

AbstractThis research aimed to improve the mechanical properties of NiCrMo alloyed steel casting, especially in terms of toughness. Toughness is a combination of tensile strength, yield strength, and elongation. The method used was a multi-heat treatment process involves normalizing, tempering, double tempering, and an additional intermediate process of quenching. The results obtained through the normalizing process followed by single quenching on oil media and double tempering (single quenching double tempering) produced the best-combined result of tensile strength, yield strength, and elongation. The modulus of toughness increased by up to 745 % compared to the as-cast condition from 20 N.mm/mm3 to 149 N.mm/mm3. The best mechanical properties were obtained from tempered martensite microstructure. It is free from rest martensite and secondary carbide.
Lifetime simulation of traditional boat propellers using Ansys
Authors: Endramawan T , Sifa A , Dionisius F , Syah M I 
Published: May 2020

Abstract
In this study an age-predictive simulation of propellers used by traditional fishermen in the Indramayu region was carried out. These boats were driven by gasoline or diesel motors to drive boat propellers. This boat propeller is made of aluminum alloy with gravity casting technique. The problem is that there are many fishermen who fail on their propellers which generally occur faults on the propeller fins, the purpose of this study is to predict fatigue and age of propellers used in traditional boats, with the observation and calculation method of Finite Element Analysis (FEA) using Ansys software. The results of lifetime propeller analysis with variability in boat hull loading and boat load, with different variations between 3488N and 4788 N, obtained a lifetime for the loading did not experience a significant difference with a lifetime of 277,7 hours.