bluuebunny/crossref_metadata_2025_split huggingface dataset:
Potential of Ketapang Seed Oil (Terminaliacatappa Linn) as Basic Material Mono-diglyceride Biodegradable Surfactant
Authors: Purwaningtyas Ery Fatarina , Fadilah Khoir 
Published: May 2020

Abstract
Surfactants are widely used in pharmaceuticals, perfumes, cosmetics, food and beverages. One type of surfactant produced from the synthesis of palm oil is mono-diglyceride which can function as an emulsifier. Ketapang (Terminaliacatappa Linn) is a beach tree with a wide spread area, whose seeds have not been utilized optimally. The content of Ketapang seed oil has the potential to be converted into mono-diglyceride surfactant. This study uses experimental laboratory methods, while parameter optimization is done by the two level factorial design method. The raw materials used were Ketapang seeds from around the campus of Semarang 17 Agustus 1945 University, n-butanol solvents, glycerol, MgO catalysts. During the glycerolysis process, 8 run experiments were carried out with 3 variables which changed in temperature (60 & 90OC); MgO catalyst (2 & 4%) and solvent / 10 g oil volume 20 and 40 ml, while the variable is the weight of 25 gram ketapang seed oil; stirring speed of 400 rpm; reaction time of 4 hours; ratio of glycerol 2.5 ml / 10 g oil; and 24-hour deposition time. From the results of the study, the influential variable is temperature. The optimum results were obtained at conditions of 90OC, 4% MgO catalyst, solvent volume of 20 ml / 10g ketapang seed oil and yield 97.9% %. The resulting surfactant has the characteristics of acid number 57.2 mg KOH / gr, saponification number 218 mg KOH / gr. Surfactant has HLB value 14.75, meaning that the surfactant functions as an O / W type emulsifier or as detergent agent.
Damarjati Application for Development of Javanese Language Learning in High Schools
Authors: Suyitno  , Ngatmini  , Wibowo Setyoningsih 
Published: May 2020

Abstract
The background of this study is the difficulty of Javanese high school language teachers in implementing the 2013 Local Content Java Language Curriculum. The problem discussed is how the application of the Damarjati application in the development of HOTS-based Javanese language learning in high school. The objective to be achieved is to describe the standard operating procedures of the Damarjati application in the development of HOTS-based Javanese language learning in high school. The object of this research is the application of the Damarjati application in the development of HOTS-based Javanese language learning with a population of Javanese language teachers and high school students in Central Java. The phenomenological approach applied in this research is carried out by developing products in the learning process with the Content Management System (CMS) format. Based on in-depth studies it was concluded that: 1) the Damarjati application was opened through damarjati.upgris.ac.id.; choose classes and semesters; choose themes and sub-themes, and provide corrections and comments; and 2) the application of the Damarjati application can develop HOTS-based Javanese language learning in high schools through the nggatekake menu, tetakon, naliti, nyoba, ngatonake, and gladhen. Our gratitude goes to the In the 7th International Conference on DV-X melalui Method Committee, through Ms. Mega Novita for her willingness to give our team the opportunity to join this highly qualified international conference.
Extraction Sentiment Analysis Using naive Bayes Algorithm and Reducing Noise Word applied in Indonesian Language
Authors: Jaka Harjanta Aris Tri , Herlambang Bambang Agus 
Published: May 2020

Abstract
Sentiment Analysis is now very important and very useful in machine learning technology where a contextual mining of text to identify and extract subjective information in the source, and in helping to understand social sentiment from comments In general, sentiment analysis can be classified into three broad categories namely sentiment positive and negative. One method of machine learning is the Deep Belief Network (DBN). DBN which is included in the Deep Learning method, is by stacking several algorithms with several extraction features that utilize all resources optimally. This research has two points. First, it aims to classify positive, negative, and neutral sentiments for the test data. The following experiments provide a system of sentiment analysis through the naive Bayes algorithm to calculate sentiment and to improve accuracy by reducing noise in words applied in Indonesian language. From this research, a good level of accuracy can be obtained for extending sentiment using 10-Cross Validation resulting in an accuracy rate of 78.33% with an increase of 6.66% for systems that do not use stopwords, which means reducting noise words and the use of the naïve bayes classification method can be used to determine analysis sentiment on Indonesian language text.
Temperature and Humidity Observation System in ATmega8 Microcontroller-Based Homes
Authors: Latif Abdul , Supriyadi Kuat 
Published: May 2020

Abstract
In our daily life it is sometimes necessary to measure the temperature and humidity of the environment around us. Many kinds of sensors for measuring temperature or humidity, such as LM35, DS18S20 or DHT11. To measure the temperature and humidity of the environment around us, we can choose a sensor that is quite cheap, namely DHT11. DHT11 has a calibrated digital output. This sensor consists of resistive type humidity measuring components and temperature measurements via NTC and is connected with 8 bit uC so that it gives good results, sufficient response speed, has good resistance to interference and is quite cheap in price. The interface used is a single write serial interface which is quite fast and easy. Small sensor size, low power consumption requirements and able to transmit its output within a distance of 20 meters. The disadvantage of this sensor is the lack of accuracy, besides the temperature measurement range is only 0 to 50 degrees Celsius but with a fairly cheap price this sensor can be an alternative to be used in temperature and humidity measurements that do not really need good accuracy. For example measurement of room temperature, measurement of temperature and humidity of incubators and others. If the sensor distance to the uC is less than 20 meters, then a 5K pull up resistor must be installed on the data pin. Meanwhile, if the distance is more than 20 meters, then the size of the pull up resistor should be adjusted. The power supply needed by DHT11 ranges from 3.5V to 5V. Access to the sensor is only allowed more than 1 second after the first power supply is supplied. It is also necessary to add a 100nF capacitor between the VCC and GND pins for the power supply filter.
Design and Development of Heart Rate Per Minutes Based on Atmega16 Microcontroller with Alarm Warning
Authors: Wijaya Nur Hudha , Mujib Achmad Kholilul , Santoso Agung Budi , Supriyadi Kuat 
Published: May 2020

Abstract
Sport is an activity to train one’s body, not only physically but also spiritually, which is useful for maintaining and improving the quality of one’s health. The simplest and most cost-effective exercise is jogging, which is usually done in the morning or evening. Sports activities will stimulate the heart to work extra in pumping blood and will facilitate blood in the body. In order to achieve the maximum benefits, it is really advisable to do sports activities in a regular and well-structured way, because if you exercise excessively, it will be very dangerous if the heart works beyond its normal limits. In this study, a heart rate meter was made which has the principle of controlling and monitoring heart rate per minute, with the hope to make it easier to calculate the heart rate while exercising and provide safety because this tool can inform the normal heart rate when exercising for users. This system is made by using the atmega16 microcontroller as the main module. This monitoring process is carried out by connecting the pulse sensor on the finger whose output is a numeric character on the LCD and the sound of a warning on the buzzer if the heart rate exceeds the normal limit. Based on the results of testing of 20 respondents, the device has been able to calculate heart rate per minute and the buzzer can sound as a warning alarm when detecting heart rate if the heart rate exceeds the normal limit. In addition, the tool designed has a percentage error of 0.72%.
Conjugate Gradient Polak Ribiere In Improving Performance in Predicting Population Backpropagation
Authors: Tinambunan Medi Herman , Nababan Erna Budhiarti , Nasution Benny Benyamin 
Published: May 2020

Abstract
Perform predictive data in the form of time series required a correct method, one method is now often used is the propagation of this method is a method that is able to minimize the error value of the output of the predicted number of people, but still generate quite a lot of iteration that needs to be optimized by minimize iterations and use of time, then the use of conjugate gradient polak Ribiere are expected to minimize the use of time, the number of the epoch of the results of standard backpropagation.
Effect of chitosan-zinc oxide coated in PVDF membrane; morphology and performance testing
Authors: Febriasari A , Siswanta D , Riyanto N , Hidayat Aprilita N , Silvianti F 
Published: May 2020

Abstract
PVDF membrane modification has been done by coating it using chitosan which is mixed with zinc oxide. This study was conducted to determine the effect of chitosan-zinc oxide hybrid on PVDF membrane’s hydrophobicity and performance. The coating has been processed by immersing PVDF membrane into a chitosan-zinc oxide hybrid solution with a ratio chitosan : zinc oxide of 1: 0 (M1), 6: 1 (M2), 4: 1 (M3), and 2: 1 (M4). Membrane morphology characterization was carried out by FE-SEM and FTIR. Water contact angle analysis and performance test was conducted to determine the effect of chitosan and zinc oxide on the hydrophobicity, permeability, percent rejection, and antifouling performance of PVDF membrane. The result of water contact angle analysis shows that the more zinc oxide was added to chitosan-zinc oxide hybrid, the hydrophobicity of membrane was decreased. Membrane performance test shows that the most stable membrane permeability to time is membrane M4, while the membrane with the most stable permeability to pressure is PVDF membrane without coating (membrane M). The best rejection performance ad flux recovery ratio of membranes is shown by membrane M4.
Application of Data Mining Technique using K-Medoids in the case of Export of Crude Petroleum Materials to the Destination Country
Authors: Rahman Fathur , Ridho Ihda Innar , Muflih M. , Pratama Sefto , Raharjo Mokhamad Ramdhani , Windarto Agus Perdana 
Published: May 2020

Abstract
The purpose of this research is to analyze and implement the data mining technique in the export of crude petroleum materials to the destination country. This is because Indonesia is a member of OPEC (Organization of the Petroleum Exporting Countries) which is one of the largest petroleum exporters in the world. It aims to obtain profits in the form of foreign exchange income obtained by the State. The data source was obtained from the Central Statistics Agency (BPS) with the website https://www.bps.go.id for data for 2017-2018. The calculation process The technique used is clustering with the K-Medoids algorithm. The calculation process is carried out using the help of Rapid Miner tools. The clusters used in this study are 2 namely: high cluster (C1) for export of crude oil materials and low cluster (C2) for crude oil materials. The results of the study stated that the high cluster (C1) consisted of 3 countries (Japan, Thailand and the United States) and the low cluster (C2) consisted of 6 countries (South Korea, Taiwan, China, Singapore, Malaysia and Singapore). It is hoped that the research results will be input and information for the government to rearrange policies in order to increase competitiveness, ensure business certainty and the sustainability of domestic industrial raw materials.
Application of MCDM using PROMETHEE II Technique in the Case of Social Media Selection for Online Businesses.
Authors: Iwan Sudipa I Gede , Astria Cici , Irnanda Khairunnissa Fanny , Windarto Agus Perdana , Daulay Nelly Khairani , Suharso Wildan , Lingga Wijaya Harma Oktafia 
Published: May 2020

Abstract
Internet media has become one of the means of product promotion that has very good prospects today. The research aims to recommend the right social media for online businesses. The data collection method was conducted by interview and questionnaire to 300 respondents who conducted online business in Pematangsiantar city by random sampling. Based on the results of interviews and questionnaires obtained assessment criteria namely security (C1), application features (C2), community (C3), ease of access (C4) and response speed (C5). The alternatives used in this research are Facebook (A1), Instagram (A2), Line (A3) and WhatsApp (A4). The settlement method applied is a decision support system with the PROMETHEE II algorithm. The results of the algorithm show that the right alternative for doing online business is Facebook (A1) with a net flow of 0.25 and followed by WhatsApp (A4) with a net flow of ¬0.1. The results of the study are expected to provide recommendations in conducting online business.
Designing smart greenhouse systems using SCADA based on IoT
Authors: Nurjannah D R , Supriadi D , Sutiawan A , Kustiawan I 
Published: May 2020

Abstract
The purpose of this study is to design a smart green home system to help the process of vegetable growth in urban areas by utilizing SCADA and IoT technology. This system can help planting vegetables in urban areas with natural conditions that are not possible and limited land. Using the hydroponic planting method will certainly be very appropriate because it does not need soil as its growing medium. The system that we designed can control and monitor parameters that affect the development of vegetables such as temperature, humidity, nutrition, water level, light, and water use in real time.
SafeDri: A mobile-based application for safety driving
Authors: Maulid H , Nurhidayat W , Priyono S J 
Published: May 2020

Abstract
Globally, around 1.3 million people die every year and more than 50 million people suffer permanent disability due to traffic accidents. This condition has worsened in many countries in the world in line with the high rate of ownership of motorized vehicles. The most common reasons for traffic accidents are distracted driving, over speeding, drunk driving and reckless driving. All those reasons are related with unsafe behaviour while driving. To cope with the problem, we developed a mobile based application that assists driver to drive more safely. The apps will collect information during a stipulated journey and recognize speeding facts, harsh acceleration, heavy breaking, and fuel consumption. While using this application, the drivers will learn how to drive safely, set goals and preferences, get alerts upon over limit violation, and receive feedback on their completed journeys. The results of a usability test on the application indicate that the app managed to identify misbehaviour while driving and rate driver behaviour based on journey history.
Optimization of capacitor capacity to reduce electric power losses in distribution networks in Jampang Kulon Sukabumi
Authors: Nurrizkiani J , Hasbullah H , Saripudin A 
Published: May 2020

Abstract
The electric power system consists of three main parts, one of which is the distribution system. The distribution system has the role of channeling electrical energy from the substation to the consumer. In the distribution of electric power, high reliability is needed so that the quality of electric power is maintained well. There are many factors that can reduce power quality, including power losses. One effort to maintain the quality of electrical power by reducing electrical power losses is to install capacitors on distribution channels. The capacitor is installed as a reactive power compensator so that the power factor approaches 1. In the Jampang Kulon feeder, there are considerable power losses, namely on bus 85-16-1 at 61.6 kW and bus 86-14-1 at 16.5 kW. By determining the capacitor capacity using ETAP, a 3 x 900 kVAR capacitor is mounted on bus 85-16-1 and a 3 x 300 kVAR capacitor on bus 86-14-1. The highest reduction in power losses occurred on buses 85-16-1 and buses 82-17-1. On bus 85-16-1 the power losses have decreased from 61.6 kW to 50 kW (reduced by 11, 6 kW), while on bus 82-17-1, the power losses have decreased from 59.4 kW to 49.2 kW (reduced by 10.2 kW).
GEMONG: A blind drinking aid
Authors: Rustandi D , Fauzi R M , Purwanto L A , Somantri Y 
Published: May 2020

Abstract
The purpose of this study was to design the GEMONG (A Blind Drinking Aid) tool. This device provides information in the form of sound to the blind when measuring water into the glass, starting to fill the water up to the size of the glass by making a sound on the loudspeaker programmed through the Arduino microcontroller. This glass is designed portable and can be washed as desired. The material used to make glass comes from stainless steel with PLA as a mechanical manufacture for the system using a 3D printing machine.
Design and development of telemedicine based heartbeat and body temperature monitoring tools
Authors: Gunawan I P C , Andayani D H , Triwiyanto T , Yulianto E , Rahmawati T , Soetjiatie L , Musvika S D 
Published: May 2020

Abstract
Body temperature and heart rate monitoring based on telemedicine is an electromedical device served to determine the condition of the heart rate per minute (BPM) and the patient’s body temperature in realtime remotely. The purpose of this study is to design the heart rate and body temperature monitor based on telemedicine uses the Internet of Things (IoT). The system allows unlimited distance monitoring by utilizing the internet as a medium for sending the data. The body temperature and heart rate monitoring system uses DS18B20, Arduino, and Raspberry Pi temperature sensors and finger sensors as data processing and transmission microprocessors, LCD Character displays the results of heart rate readings and body temperature per minute. The results of heart rate measurements and body temperature are sent to the database via microservice and displayed on a web page in the form of numerical data and responsive plot graphics on desktops and mobile phones. Based on the measurement and comparison to standard apparatus, the average error of BPM measurement is 0.72%, with a maximum permissible tolerance of ± 5%. While in the body temperature parameter the average difference is 0.3 ° C with a maximum permitted tolerance of ± 1 °C.
IoT based wearable personal air monitoring for sinusitis
Authors: Amani G N , Wahyudin D 
Published: May 2020

Abstract
Sinusitis is inflammation of the cavities around the nose, caused by viruses or allergic reactions of bacteria, fungi, and ARI. Other influential factors are polluting the environment, cold air, and dry. There is no specific device that can help sinusitis sufferers in monitoring air condition. This research was developed to be easy to use for people with sinusitis to be able to display temperature and humidity in real-time using a BME280 sensor and providing action in the form of a humidifier when the humidity is below the set point. The trial results show that the data sent has been successfully received by the output and can turn on the humidifier. From the measurement data obtained, 2,571% error for temperature measurement and 5,898% for humidity measurement. The results of interviews with participants found that this device can help sufferers of sinusitis as a preventive measure if the air condition is not good.
Mini tickets printing machine based on IOT with mobile information using a smartphone
Authors: Lestari S P , Elvyanti S 
Published: May 2020

Abstract
Queue is an event that we often encountered in various places or in public services such as hospitals, banks, restaurants and many more. The restriction of the queuing process is usually due to a long queue thus the process is not enough effective and efficient to the public process. The rapid development of technology that is growing, need the integration between the engine and the mobile information system. So that, we can do a job quickly, and accurately. ESP8266 as a microcontroller and a thermal printer as a ticket printer, both of them can be made a mini machine ticket printer that is small and connected with the smart phone through the Internet connected to the database, so that the user can see directly through the queue number in the smartphone applications. In this paper conducted a mini-making ticket printing machine using ESP8266 based IOT by using a smartphone.
Design of baby growth monitor system in the Posyandu for nutrition status analysis
Authors: Utomo B , Gumiwang H , Soetjiatie L , Triwiyanto T , Oswarida D S 
Published: May 2020

Abstract
Generally, the reporting and recording a nutrition status of infants and baby, which conducted at the Posyandu, is still using the manual system. The problem in the manual system is that the local Health Office cannot monitor the status of infants at the Posyandu. Therefore to support government programs, especially in maternal and child health, an application system is needed that helps to monitor the growth and development of infants and baby. The purpose of this study is to design a system to monitor the infant and baby growth at the Posyandu for Health Office of Surabaya, which further it can be accessed online. This research method was Retrospective and perspective designed, where the development of the growth of infants and baby can be monitored and analysed for its impact. The population and samples were taken from infants and baby in the local Posyandu. The growth monitoring of infants and baby used indicators of nutritional status with the index of weight for ages (BB/U), weight for length (BB/TB), and length for ages (TB/U). In this research, the designs of baby growth monitoring system can be applied well at many Posyandu. In this study, the MySQL and PHP database system data can be integrated into other database systems to support existing reporting systems. Furthermore, this research application can be applied to monitor baby growth in the city and this country.
Analysis of estimated busses arrival time on public transportation using real-time monitoring
Authors: Yuniar R N , Kencan P A , Ruth E , Budi A H S 
Published: May 2020

Abstract
The purpose of this study is to create a system that can inform the bus position and provide information about the arrival time of the bus. We propose real time monitoring of the position and estimated time of arrival of Damri buses using the Haversine formula. GPS devices that are applied to each bus are monitored by utilizing passengers’ cellular applications. The results show information about the position of the bus and estimated time of arrival of the bus at each stop. This research can help estimate the arrival time, especially in providing information about the certainty of bus arrival to prospective passengers who are waiting at each stop according to the bus destination.