bluuebunny/crossref_metadata_2025_split huggingface dataset:
Android based Wireless Sensor Network (WSN) mobile application on humidity and temperature environmental monitor using CC2650 sensor tag
Authors: Asmara R A , Siradjuddin I , Romadhona R D 
Published: February 2021

Abstract
This research proposed environmental sensing humidity and ambient temperature or object use CC2560 Texas instrument sensor tag device. This device will be implemented on a mobile app to detect surrounding humidity and temperature environment, hoping that it will be used to monitor the user’s daily activity. The sensor will transmit raw data to a central data collector mobile app using Bluetooth Low Energy (BLE) communication and configured with the other same device CC2650 sensor tag in a field with Wireless Sensor Network (WSN). Temperature and Humidity sensing was doing with distance to testing the accurate and sensitivity about the sensor device and the sensor is going work well when the time sampling in second time, the humidity and temperature can follow and change with real time sampling until 30s start from 30.12 and humidity start from 85.81 percent because of specification of the sensor device data transfer very fast wit Bluetooth Low Energy / multi-protocol 2.4 GHz and wireless MCUs with 352-kB flash and 80-kB SRAM, so the device get very little energy, low cost, and have good durability can access data and transmit for a long time.
Experimental analysis of temperature, light intensity, and humidity on rooftop standalone solar power plant
Authors: Widjanarko W , Alia N , Dani A , Perdana F A 
Published: February 2021

AbstractRooftop standalone solar technology is a new renewable power generation solution worldwide and can reduce carbon dioxide levels in the environment. However, several factors affect the performance of the power plant, it is highly influenced by weather parameters. This paper shows the design of the rooftop standalone solar power plant and the influence of temperature, light intensity, and environmental humidity on it. The designed system consists of a 200WP photovoltaic, 1260Wh LiFePO4 battery, and an MPPT solar charge controller 40A. This standalone power plant was applied to supply the energy of the home lighting, with 20Watt the total of power. The result shows the design of the rooftop standalone solar power plant. Furthermore, there is an influence of temperature, light intensity, and environmental humidity on the LiFePO4 battery input power.
Voltage control for variable speed wind turbine using buck converter based on PID controller
Authors: Putri R I , Syamsiana I N , Rifa’i M , Aditya F 
Published: February 2021

Abstract
Currently, energy diversification is needed to overcome the limitations of fossil energy as a fuel for electricity generation. In Indonesia, one source of renewable energy that has great potential is wind energy. Wind energy conversion system is an environmentally friendly electricity generator with unlimited availability. However, the electrical energy produced depends on the fluctuating wind speed so that it produces a fluctuating voltage. Variable speed wind turbine is one of the most widely used wind turbine types because it has better efficiency but requires control to overcome the fluctuations in the voltage generated. This paper presents voltage control on a prototype variable speed wind turbine with a permanent magnet synchronous generator (PMSG) and buck converter. The output voltage generated by the PMSG will be rectified by a three-phase uncontrolled rectifier. Voltage control is done through the duty cycle settings on the buck converter that is connected to the battery for energy storage. PID controller is used to set the duty cycle of PWM pulses with a switching frequency of 31.5 kHz. The Propotional Integrator Differensiator (PID) controller is embedded in the microcontroller. Based on the test results, the resulting output voltage can be held constant at 14V by providing variations in wind speed changes which are simulated through PMSG speed changes. Transient responses with the fastest settling time of 1.2 s were obtained with the PID controller parameter values Kp = 0.6, Ki = 0.15 and Kd = 0.6.
Control plastic pellet feeding double extruders for 3D printing symmetric bilateral
Authors: Setiawan B , Damayanti A M , Siradjuddin I , Widjanarko W , Permatasari D C , Audiana V U 
Published: February 2021

Abstract
Three Dimensional Printing (3DP) is one of the technologies that support industry 4.0. One of the common 3DP technology is FFF (fused filament Fabrication), the technology is also known as Fused Deposition Modelling (FDM). In this case, extrusion thermoplastic through a hot nozzle with certain melting temperature. The extrusion machine (extruder) will melt the plastic pellet and push the pellet through a heating zone that has a different temperature and pushed out by a screw to the nozzle to be printed into objects. This research aims, to make a control innovation for plastic pellet feeding double extruders. Those extruders for a bilateral 3DP symmetrically to print an object with a size of 2000x2000x2000mm using FDM method. The research simulation results showed that the extruder melts the plastic pellets with a temperature of melting is 200°C, temperature controlled by PID. In this research using 4mm plastic pellets diameter polyethylene high density (HDPE). The double extruders is controlled by two stepper motors Y- and Y+ axis with speed 70mm/s, on 2mm nozzle diameter. The extruder can be produce 110mm melted plastic filaments in 250 steps.
Design and optimization of digitalization device of temperature control system using PID Ziegler-Nichols control in chemical engineering laboratory
Authors: Wiharya C , Sungkowo H , Suryandari A S , Kurniawan B I 
Published: February 2021

Abstract
The Temperature Control Module is a tool that is useful for adjusting the temperature of a liquid or solution so that the temperature of a liquid is as determined. A device that uses a heat exchanger as a place to combine temperature, so that the temperature of a liquid with another liquid will meet there so that the temperature of the liquid in the heat exchanger can be changed. From the temperature control practicum module prototype in the chemical laboratory, it is known that in the open loop test with hot water input temperature above 90 °C and cold water input temperature 28 °C an output value of 69 °C is obtained. This value is stable but slowly decreases. By providing feedback and the controller in the form of sensors and data will be processed by the PLC, then a value that corresponds to a set of values is obtained, namely 60 °C, but the output temperature is unstable because the output graph is still fluctuating and unstable. Based on experimental calculations and PID calculations using the Ziegler Nichols method, the Kp = 30, Ti = 77.95, and Td = 19.489 were obtained. By providing the PID algorithm calculated by the Ziegler Nichols method, it can increase the output temperature to 58 °C. This is due to the addition of the PID gain to be more substantial so that the system becomes unstable.
Microcontroller-based control system design using step counter method in drilling fixture
Authors: Faizin A , Wicaksono H , Sari N P 
Published: February 2021

Abstract
Automation in the manufacturing process in the industry today is absolutely needed. Advances in technology has changed the characteristics of the manufacturing industry. The development of robotics, visualization technology and collaborative automation has increased the development of the manufacturing industry, enabling automation to be applied not only in the mass production process but also in low volume production. This is done to pursue the benefits of investing in industrial automation machines: productivity, accuracy, safety, cost savings, quality improvement, and repeatability. Industrial automation is the main key in following the development of technology into industry 4.0. This study aims to propose a new pneumatic system using the microcontroller by implementing the step counter methods. In this research, it is used to control a drilling fixture that has 3 (three) DACs. The Arduino microcontroller system used in this study to perform the step counter methods. Arduino type Mega 2560 control system has 10 inputs and 10 outputs for the 5/2 directional control valve (5/2 directional control valve – DCV. Through the application of this method, the preparation of microcontroller-based control circuits can be done in a structured and easier way, both the steps of preparation, control, and troubleshooting.
The information security strategy of Bogor’s smart city to deal with threat in cyber space
Authors: Madjid M A , Legionosuko T , Samudro E G 
Published: February 2021

Abstract
The increasing quality and quantity of cyber-attacks and the demand for the information security revolution are also followed by the threat in developing Smart City of Bogor. In assuring these problems, it is crucial for the City Government of Bogor to develop and information security strategy which is capable to protect public privacy data and critical information of Smart City Bogor. The research was conducted with a qualitative method by using a grounded theory approach at the critical infrastructure of Smart City Bogor, which is the Department of Transportation, Department of Health, Department of Fire Rescue and Department of Communication and Information. The result showed that the information security as a core strategy which only created by the readiness of the legal ware as a causal factor in forming the knowledge and information security awareness in the preparation of priority program and development of the command, control, communications, computers, intelligence, surveillance and reconnaissance (C4ISR) systems of Smart City Bogor which became the basis of the formulation of Smart City Bogor’s information security theory.
Securing the electronic medical record by implementing Advanced Encryption Standard (AES) on the information system of a health service place
Authors: Rahmad C , Syulistyo A R , Sumari A D W 
Published: February 2021

Abstract
Medical records are very crucial in health services all over the world. This is due to not only to record individual health conditions but also for getting the most appropriate medical services at a local health facility when in mobile conditions. By having a look at the medical records, the local health workers can know the medical history and give their best service in treating the patient. Conventional medical records commonly are written manually and are not flexible for the mobile environment. Therefore, the electronic medical record (EMR) has become mandatory to be implemented to cope with such problems. Another important thing that requires attention is the patient has the right to know the contents of the medical record, especially when having health services at a different hospital or other health services when at mobile conditions. Accessing the EMR from the mobile environment brings a crucial matter, namely, how to secure the contents of EMR and ensure that the access can only be given to the legitimate owner fit as well as other legitimated actors such as the related doctors and the EMR officials. Based on the arisen problem, the contribution of this research is to make the implementation of encryption algorithms that will be used on Secure Electronic Medical Record (SEMR) systems using secure and fast encryption techniques by using Advanced Encryption Standard (AES) on the information system of a health service place.
Public service innovation through the application of mobile-based smart city concepts in Sukun sub-district, Malang City
Authors: Aji D K P , Ariyanto R , Rahutomo F , Ismail A , Batubulan K S 
Published: February 2021

Abstract
Public service provides services to the public carried out by the government whose services can be in the form of goods, services, or administration. The sub-district is a public service provider from the application stage to the publication phase of the document. Where people need not go to several agencies to take care of licensing documents, but enough to come to the district in their respective regions. Districts as the spearhead of government administrators must carry out their functions as the embodiment of excellent public service. However, in reality, public services at the sub-district level are of poor quality. Less responsive, less informative, and convoluted bureaucracy is often a major problem in service. Even though in the current technological era, the sub-districts should adopt technology for their activities. Innovation in using smart city concept technology in sub-districts is the key to solving existing problems because integrating entities in the smart city concept can facilitate the exchange of information, speed of data exchange, and rapid decision-making by service officers the public. So that the public services organized by the sub-district become more quality.
Detecting body parts from natural disaster victims using You Only Look Once (YOLO)
Authors: Moechammad S , Cahya R , Berkah A N A 
Published: February 2021

Abstract
Natural disasters are unpredictable events in both the location and the time of occurrence. Natural disasters can cause property loss and can even be claimed by life. To reduce the amount of losses, the handling of rapid evacuation should be conducted by the SAR team to help victims of natural disasters. But in fact, there are a lot of obstacles in the evacuation process. Starting from the difficulty of searching the victim’s body, the difficulty of the terrain reached until limited equipment needed. In this study designed the body detection system of natural disaster victims using image processing where the shooting of victims was carried out using drones aiming to help find victims in a difficult or prone location when reached directly by humans. Background of the problem, in this research proposed a development method for the detection of victims of natural disaster that aims to help the SAR team as well as natural disaster volunteers in the search for victims who are in a difficult to reach place. The method used by You Only Look Once (YOLO) uses the Python programming language associated with image processing. From the research has been obtained accuracy detection object disaster victims with good accuracy. Based on the experiments that have been done obtained a good accuracy value of 95.49% with epoch of 12000.
Evaluation of educational media of private body parts for down syndrome children
Authors: Pradibta H , Sukmana S E , Ikawati D S E , Sabila W I , Hikmah A M , Ramdani M A I 
Published: February 2021

Abstract
Educational media of private body parts for Down syndrome children is an educational media in the form of audio-video animation containing information about private body parts. This application developed as part of the supportive learning for Down syndrome children who have entered puberty so that they can avoid sexual abuse. An evaluation is carried out to determine whether the educational media created are according to the needs. The evaluation process is done by interviewing the respondent after conducting a trial on the educational media. The selected respondents were teachers, parents and students. Testing is held at SLB Tk. National Bagian C Malang. The interview questions based on several criteria for assessing multimedia applications, including 1) Ease of use of navigation, 2) Cognition content, 3) Presentation of information, 4) Media integration, 5) Artistic and aesthetics, 6) Learning function. The results of evaluations show that the educational media developed have met the criteria of multimedia assessment. Application of private body parts can provide understanding to Down syndrome children about personal body changes and social contact.
Optimal multi-layer perceptron parameters for early stage diabetes risk prediction
Authors: Wijayaningrum V N , Saragih T H , Putriwijaya N N 
Published: February 2021

Abstract
Diabetes is an alarming threat to people around the world because the number of diabetics is increasing every year. Diabetics with other complications have a very high risk of death. Therefore, the use of technology to predict the risk of early diabetes is needed. Neural Network as one part of artificial intelligence plays a role in solving prediction problems with satisfying results. In this study, a multi-layer perceptron neural network is used to predict the risk of early stage diabetes with optimal parameters from the optimization results using Improved Crow Search Algorithm. The test results prove that the multi-layer perceptron with optimal parameters is able to provide better accuracy compared to other algorithms such as J48, PART, Decision Table, Naïve Bayes, AIRS1, AIRS2, and Single Layer Perceptron with the highest accuracy values of 97.69% and 96.92% for one and two hidden layers, respectively. This proves that the proposed solution can be used to predict the early stage diabetes risk.
Control position of the double nozzles on the Y (+) and Y (-) axis of 3D symmetric bilateral printing using G-Code
Authors: Audiana V U , Setiawan B , Sumari A D W , Wibowo S 
Published: February 2021

Abstract
The most widely used universal Cartesian 3-Dimensional (3D) Printing today is not fast enough. However, by applying double nozzles, the process for making symmetric bilateral product can be done in half of the time. A symmetric bilateral product is an object that has the same size on the right and left sides. So, the method can be implemented by having double actuators that are mounted by a nozzle on each side. Both nozzles, called as Y and -Y nozzle, move on the same time and distance but in different direction. Besides that, an appropriate mechanical support is needed to be prepared, so that the motors can move in different direction at the same time. Therefore, a design simulation for two Y actuators was carried out. The simulation and the data taking were using actuator simulation software. The simulation results shows that the G-code can control two Y actuators with 99.64% accuracy with average error of 0.216% for revolution speed, and 100% accuracy with average error 0% for distance. The motor can move in different directions with the same type of screw.
HDPE plastic extruder design and control for 3D printing with plastic pellet feeding method
Authors: Setiawan B , Permatasari D C , Sumari A D W , Winarno T , Audiana V U , Damayanti A M 
Published: February 2021

Abstract
3-Dimensional (3D) Printing Technology (3D printer) has become a Standard Acceleration Tool for Industry 4.0. Until now, 3D Printing system material melting technology has been using Fused Deposition Modelling (FDM) method. FDM is the melting of plastic materials through melting temperature and the formation of 3D objects in layer by layer manner. Meanwhile, the feeding for melting material is in the form of rolling filament. Currently, in this research FDM uses plastic pellete feeding method. Its exstrusion is called extruder, that is, plastic pellet processed through heater zone and pushed out by screw to the nozzle where the nozzle is a Computer Numerical Control (CNC) drives 3-Degree-of-Freedom (3DOF) applying cartesian axes. In this research, the printing uses high density polyethylene plastic pellete (HDPE). Temperature control in melting heater using proportional-integral-derivative (PID) method is controlled by microntroller and programmed through marlin firmware. The design and implementation result showed that the extruder system is capable to melt HDPE pellet at 200°C with heater power 300Watt and the screw can rotate to push out melted plastic at 2mm of nozzle.
The role of the blades number and pitch angles to the capability of self-start the Darrieus wind turbine
Authors: Adiwidodo S , Yudiyanto E , Wahyudi B , Susilo S H 
Published: February 2021

Abstract
Darrieus is classified as a vertical axis wind turbine that has a simple construction. It is widely used for small-scale domestic needs in rural or aquaculture areas. As with other types of vertical axis wind turbines, Darrieus have low efficiency. There is resistance on one side of the blade which aggravates the shaft rotation. Another problem is the low ability to self-starting. Some even need help from an external source to start. This is certainly detrimental in terms of energy conversion. The purpose of this study is to obtain information on the wind speed needed for a Darrieus to self-starting on variations in the number of blades and pitch angles. The blade profile used is NACA 6412. Variations in the number of blades are 2,3,4 and 5 and pitch angles of -10°, -5°, 0°, 5°, and 10°. Data retrieval was carried out experimentally using the wind tunnel. It is shown that the self-start wind speed was strongly influenced by the number of turbine blades. The number of blades 5 requires the lowest average self-start wind speed. The pitch angle has a different effect on the wind self-starting speed depending on the number of blades.
The effect of variation of extra fan condenser and engine speed to COP of mobile air conditioners
Authors: Nurhadi N , Listiyono L , Maskuri M , Prasetyo B R 
Published: February 2021

Abstract
Efforts to increase coefficient of performance (COP) of Mobile Air Conditioners (MAC) still continue to be done, including by increasing the extra fan condenser speed. The problem is whether it can improve the COP, it needs to be tested further. This study focuses to examine the effect of extra fan condenser and engine speed variations to COP. This study was conducted on a MAC engine stand which able to measure the pressure and temperature of MAC system. The data measured at inlet compressor (P1, T1), outlet compressor (P2, T2), outlet condenser (P3, T3), and outlet expansion valve (P4, T4), at engine speed of 1.000, 1.500, 2.000, 2.500 and 3.000 rotation per minute (RPM), respectively with variations extra fan condenser speed of 0.15, 1.74, and 2.22 m/sec. The data was plotted on p-h diagram to obtain enthalpy value, so that obtained COP value by calculation. The major result obtained are the variations of extra fan condenser and engine speed had an effect on the COP. The highest COP (4.48) was achieved at an engine speed of 2,000 RPM with extra fan condenser speed 2.22 m/sec. Increasing extra fan condenser speed causes better cooling at condenser and cooling effect on the evaporator.
The effect of strain hardening on the limit forming ratio on the single-step incremental hole flanging process on aluminium plates
Authors: Mashudi I , Fakhruddin M , Hardjito A 
Published: February 2021

Abstract
Hole-flanging is the process of forming a plate to produce a collar around the hole. This formed collar has several important functions to increase the bonding surface area, as a supporting medium for other components, as a guide, increase construction rigidity, etc. This collar is generally formed through conventional hole flanging which involves making the initial hole in the plate, then punch with a certain profile and a larger diameter pressing the plate in one step of the forming process. This forming process will cause the deformation of the plate so that a collar is formed around the hole. In recent studies, it can be found that the collar can be formed not only with one stage of the conventional hole flanging process, but can also be achieved by a multi-stage incremental hole flanging process using a punch with a multi-purpose general profile. In this research, an experimental study was carried out on the effect of ‘strain hardening’ on the limit forming ratio (LFR) in the single-step incremental hole flanging process on aluminium plates using conical punch. The research hypothesis shows the influence of ‘strain hardening’ on the limit forming ratio (LFR) in the single-step incremental hole flanging process.