bluuebunny/crossref_metadata_2025_split huggingface dataset:
Spherical K-Means method to determine earthquake clusters
Authors: Rini D S , Sriliana I , Novianti P , Nugroho S , Jana P 
Published: March 2021

Abstract
Spherical clustering is a grouping technique for spherical data. A vector data set is grouped into clusters where the distance used to group the vectors is the angle between the vectors. Earthquake events are directional data that can be analyzed in three-dimensional (spherical) form because the epicenter of the earthquake spreads is very long, and the time difference between events is different. Therefore, this study aims to determine earthquake clusters in Bengkulu Province and the surrounding areas. The data used is data on earthquake events in Bengkulu Province and surrounding areas from 1970 to 2019, including latitude, longitude, magnitude, and depth, sourced from the USGS website. The analysis used in determining the earthquake clusters in Bengkulu Province is the Spherical K-means cluster analysis. The results showed that there were six earthquake clusters in Bengkulu Province and its surroundings. Most of the clustering results are in the sea.
PPT-Audio; The Alternative Audio-Visual Media for Online Learning during the Corona Pandemic
Authors: Syafril E P E , Kurniawati W 
Published: March 2021

Abstract
The Corona outbreak has affected many sides of people’s lives, including the learning process. Many students, teachers, and parents experience problems, both when teachers explain the learning material and when students understand the subject matter well. Therefore, this study explains the use of PPT-Audio in learning process during the Corona pandemic. It’s used a qualitative design with semi-participatory observation and interviews via WhatsApp (group) during May-July 2020. The references review is also carried out on concepts, studies, and the conditions of audio-visual learning. The results are: (1) learning process during the Corona pandemic experienced many obstacles: the explaining process by teachers, the understanding process by students, and the mentoring process by parents. In general, the learning process only takes the form of giving assignments by the teachers. (2) The use of PPT (audio) is very helpful for the teacher while explaining the subject matter and students with their parents while watching and listening to teacher’s explanation. (3) PPT-audio becomes an offering alternative media of attractive learning that can foster student’s imagination, creativity, and motivation while learning, especially accompanied by interesting pictures and narration.
Analysis of The Effect of A Catalyst Hydrocarbon Crack System Spiral Pipe Against The 4-Stroke Motorcycle Engine Power
Authors: Rohmantoro Didik , Purnomo Bayu Gilang , Amiruddin Muhamad , Mahendra Sena 
Published: March 2021

Abstract
Engine power is produced through the change of energy from the chemical energy of the fuel by the combustion process into mechanical energy in the piston. This study aims to determine the effect of dual catalyst pipes using a hydrocarbon crack system on engine power. The design of this study used an experimental research design; the initial stage of this experimental study was by making a specimen that is a double catalyst with a spiral pipe on a hydrocarbon crack system. Retrieval of data starts from 1500rpm to 6500rpm engine speed with a lap difference in each test of 500rpm—data analysis techniques using numbers from research. They were testing the engine power of the motorcycle using the dyno test. The research data between standard machine testing results with the results of engine testing using a hydrocarbon crack system. Increased engine power occurs in HCS with a double catalyst and uses two fuel tubes. Vehicle power increased with the highest percentage by using one fuel tube that occurs at 5500rpm rotation, with an increase of 34.45%, i.e., obtained power of 6.73. Simultaneously, the use of 2 fuel tubes increased by 57.2% at 4500rpm with a power of 5.76.
Mathematics Teachers’ Perceptions of Using the Internet for Online Learning
Authors: Hafidzatulistya Azhumna , Jana Padrul 
Published: March 2021

Abstract
This study aims to determine the mapping and teacher reasons regarding the use of the Internet in online mathematics learning. Retrieval of research data through a questionnaire Google Form. Interviews with mathematics teachers in Yogyakarta as many as 34 respondents. The results of the study were mapped based on gender, high school / junior high school units, and equivalent, 0-10 years of teaching and 21-30 years. Shows the same result, namely the use of the Internet for learning mathematics as an addition and a complement. Meanwhile, the results of teacher perceptions based on a junior high school level and teaching length of 11-20 years are only as an addition. The teacher’s reason can be concluded that the source of learning can be from anywhere, and the Internet is one of the additional learning resources for students, but to use the Internet must be supervised. The Internet can also complement mathematics learning by utilizing existing applications, but online mathematics learning cannot be equated with direct learning. Mathematics learning cannot be done entirely using online learning because interaction and delivery of material to students is limited and not optimal. Still, because of this pandemic, online learning for learning mathematics is needed.
Development of a Multirepresentation-Based Learning Model to Increase the Emotional Intelligence of 5 - 6 Years Old Children
Authors: Utami Novianti Retno , Iman Windi Wulandari Utama , Handoko Herdi 
Published: March 2021

Abstract
This research aims to discover a learning model that can improve the emotional intelligence of children aged 5-6 years. The alternative taken to achieve this goal is by developing a pitutur luhur learning model based on multi-representation that focuses on the development of the emotional intelligence of children aged 5-6 years. The development of this learning model is based on the lack of learning models to improve children’s emotional intelligence, especially those related to local culture. The research method used adopted the research and development procedure of Borg & Gall with the research stage; 1) preliminary study, 2) model development, 3) model validation and revision and 4) model implementation. Data needs for the model were obtained through questionnaires and group discussions. The questionnaire was filled out by 30 kindergarten teachers in Bantul Regency, Yogyakarta. Data collection techniques using questionnaires and emotional intelligence tests of children aged 5-6 years. Test the effectiveness of the model using the pretest-posttest control group design experimental method. The results of the research showed that The pitutur luhur learning model based on the multi representation could improve the emotional intelligence of children aged 5-6 years.
Applying information and communication technology on learning model innovation of character education
Authors: Saptatiningsih Rosalia Indriyati , Wardani Setia , Widya Sari Marti 
Published: March 2021

Abstract
This research aims to Character education material which with the indoctrination method in formal institutions will not build national character, because character implementation can only be built based on habits, spiritual and affective values. This study aims to design a Character Education learning model for IT-based Civics subjects to strengthen the character of junior high school students in the Special Region of Yogyakarta (DIY). The method used is the study of literature, observation, in-depth interviews (in-depth interviews) and data analysis. The subjects in this study were 2 junior high school students in DIY, located in Bantul and Sleman districts, namely SMP Tridadi Sleman and SMP PGRI Kasihan. The research roadmap is made for 1 (one) year, which includes initial investigation, school mapping, analysis of mapping results, designing learning models, designing learning media up to the implementation to junior high schools in DIY which are the subject of research, while data analysis techniques to be used are models integrated between quantitative and qualitative approaches.
Prediction of Banking Stock Prices Using Naïve Bayes Method
Authors: Setiani Ida , Tentua Meilany Nonsi , Oyama Sunggito 
Published: March 2021

Abstract
Bank Rakyat Indonesia (BRI) is one of the largest state-owned banks in Indonesia. It has prompted both local and foreign investors to buy shares in the largest bank in the country. Reading stock price trends is very important for investors to buy or sell the shares they own. The method usually used by investors is fundamental analysis and technical analysis. Analysis by reading financial reports is quite complicated and requires high accuracy. Besides that, it takes much time because of the large amount of data available. A banking stock price prediction can be a solution to make it easier for investors to read stock price movements. In this study, the authors will design a web-based system to predict banking stock prices using the Naïve Bayes method. This system can provide investors with ease and effectiveness in reading stock price movements.
The Use of Augmented Reality to Build Occupational Health and Safety (OHS) Learning Media
Authors: Wahana Aditya , Marfuah Hasti Hasanati 
Published: March 2021

Abstract
Occupation Health and Safety (OHS) has a purpose to ensure a safe and healthy work environment. Occupation health and safety must be apllied by an industry that have potential hazards arising from the production process carried out. The potential hazards include work accident such as explosion, fire, pollution, and disease. The technological development brought us to the next level of invention. One of the invention that found in 21st century is Augmented Reality. Augmented Reality is an revolutionaty invention which combines virtual object into reality environment. Augmented Reality widely used as a learning media, promotional tools, and for some special purpose. Augmented Reality can be use in desktop, mobile device, and wearable technology. The purpose of this research is to build Occupational Health and Safety learning media based on Augmented Reality. The learning media will be made mobile based with android devices. The method of software development using the waterfall method. The output of this research is marker card that can display objects in the form of images about Occupation Health and Safety. Images will reveal if card scanned using android mobile device that has the Augmented Reality application installed.
Application of Data Mining Using the K-Means Algorithm in Rural and Urban Land and Building Tax (PBB-P2) Receivables Data in Bantul Regency
Authors: Aprilia H D , Agustiani D 
Published: March 2021

Abstract
The rural and urban land and building tax (PBB-P2) receivable amount in Bantul is quite large. As of December 31, 2019, there were 3,344,145 PBB-P2 objects, worth for IDR 114,984,991,600. This number tends to increase from year to year, showing that PBB-P2 receivable collection process has not optimal. This study discusses data mining applications for data management using the K-Means clustering method. This paper uses the PBB-P2 existing receivable data, given by the Directorate General of Taxation before PBB-P2 becomes local taxes. The data is between the years of 1994 and 2012. Data is grouped based on the village area and the category of the receivables number. We cluster it into three types, namely the high, medium, and low accounts receivable clusters. Data mining is expected to improve the PBB-P2 receivable data management in the Bantul Regency to make better decision-making. This study’s results make it easier to analyze PBB-P2 receivable data pattern based on the grouping of village areas and the receivable number category. The analysis results are expected to provide input for BKAD Bantul to identify certain villages and categories of receivables that need more attention in the PBB-P2 collecting process in the Bantul Regency.
Flipped Classroom Learning Based on Android Smart Apps Creator (SAC) in Elementary Schools
Authors: Suhartati Oktri 
Published: March 2021

Abstract
The thematic interactive learning model of flipped classroom based on smart apps creator is useful for improving the quality of learning. The use of the flipped classroom model based on Andoid Smart Apps Creator (SAC) in learning can increase student motivation creativity, activity, and learning outcomes. Problem formulation How the design and the implement of SAC-based flipped classroom learning model in elementary schools. Is the research objective is to analyze the design and implementation of Android-based flipped classroom learning in elementary schools. This research uses literature study method, field survey, and descriptive analysis. The results of the literature study and field survey state that teachers in Kudus have used the flipped classroom model but have not used the smart apps creator. Therefore, it is necessary to develop a flipped classroom model using Android based using SAC software to improve the quality of learning in elementary schools.
Development Design Technology Comic Literacy Android Based E-book
Authors: Endiawan Ahmad Syukri , Fathurohman Irfai , Santoso  
Published: March 2021

Abstract
This study aims to develop pictorial story literacy valid and practical based on android e-book on the theme of love plant and animals, sub two the benefits of plants of human life, especially in third-class of elementary school in Terangmas Undaan Kudus. This study is a Research and Development study using Borg & Gall’s. The development steps are: (1) analyze the needs of learning in primary school; (2) develop the design of initial products; (3) validation and revisions; (4) small group test; (5) large group test; and (6) diseminations. The research method used was a questionnaire and interview in SD Terangmas and SD 1 Glagahwaru. Date was collected using questionaire of respon students and teachers. The learning is valid looking by the scores obtain from 4 validators, which are 52, 27, 21, and 51 with criteria of valid score. The percentage of positive responses given by the teacher and students respectively is 93.33% and 95% of the minimum criteria 75.01%.
The Correlations Between Academic Supervision Using Zoom Meeting Technology with Teacher Job Satisfaction
Authors: Suripah  , Sukirman  , Surachmi W Sri 
Published: March 2021

Abstract
The research objective was to determine empirically the relationship between academic supervision of school supervisors and teacher job satisfaction. This study used a quantitative approach to survey method with the independent variable (X) academic supervision of school supervisors and the tied variable (Y) teacher job satisfaction. The research was conducted in public elementary schools in Bae District, Kudus Regency, with a purposive sampling technique of 50 teachers. Data collection through the online questioner whatsapp application. Data analysis method Product Moment correlation. The results showed that the rxy coefficient value was 0.868 at the p significance level of 0.000 (p <0.00), indicating that there is a very significant positive relationship between the academic supervision of school supervisors and teacher job satisfaction with an effective contribution of 75.4% the rest 24.6% Teacher job satisfaction is influenced by other factors.
Constraints in Implementing Online Learning during the Covid-19 Pandemic
Authors: Suci  , Candra Wiji Lestari , Murtono  , Suryani  , Budi Fitri 
Published: March 2021

Abstract
One of the effects of the Covid-19 pandemic is the recommendation to carry out online learning. This study aims to explore the constraints faced by teachers, students and parents in implementing online learning during the Covid-19 pandemic. The method of this study is a qualitative research. The respondents were teachers, students, and parents from the first grade, the second grade, the third grade, the fourth grade and the fifth grade at the state elementary school Mangunjiwan 2, Demak, Indonesia. The data were collected using interview and questionnaires and analyzed using a qualitative descriptive analysis. The results showed that the constraints experienced by teachers, students, and parents in implementing online learning during the Covid-19 pandemic include limited internet quota, network disruption internet, students without cellphones, lack of student attention, disturbed parents’ work, and teachers’ difficulty in using technology and designing attractive online learning. This study suggests teachers to increase their skill for online learning and government to support the internet for online learning.
The Influence of Student Motivation, School Environment, on Student Learning Achievement
Authors: Supratno Yoga Heri , Murtono  , Mochamad Widjanarko 
Published: March 2021

Abstract
Good learning achievement is expected to be able to become a quality human being. So that it can solve various forms of problems faced. Learning achievement can be influenced by student learning motivation factors and the school environment. The purpose of this study is to analyze the effect of learning motivation on student achievement and to analyze the influence of the school environment on student achievement in grade V Elementary School (SD). The research model is quantitative with the ex post facto approach. The study population was 100 class students. and research samples of 80 students. The sampling technique used cluster random sampling with two stage cluster sampling. Research instruments questionnaire and documentation. The data analysis techniques were instrument test, prerequisite analysis and hypothesis test. The results of the study:(1) there is a positive and significant influence of learning motivation on student achievement in grade V SD; (2) there is a positive and significant effect of the school environment on the learning achievement of grade V SD students.
HOTS - based scientific learning to increase the comprehension concept and science students skill
Authors: Widyaningrum Dewi , Utaminingsih Sri , Santoso  
Published: March 2021

Abstract
This research aims to know the effectiveness of HOTS based scientific learning models to increase the comprehension concept and science students skill. The method was quasi-experiment with Pretest-Posttest Control Group Design. The type of data obtained in this study is quantitative data. Data collection techniques in this study were used observation, student questionnaires, and student evaluation tests. Data analysis using the homogeneity, normality, and t-test to test the effectiveness of the model. Based on the output table ″independent samples test, it is known that the sig. (2-tailed) knowledge value is 0.224 and the sig (2-tailed) skill value is 0.507. Because the sig value is 0.224 and 0.507> 0.05, according to the basis of decision making in the independent sample t-test, it can be concluded that Ho is accepted and Ha is rejected, which means that there is a difference between the average knowledge and skill values of SDN Sayung 3 and 4. Based on the research results obtained, it is known that the use of hots-based scientific learning models is proven to be effective in improving thecomprehension concept and science students skill. In addition to testing the effectiveness of the model, researchers also observed student activities to strengthen research results. Besides, data analysis of student and teacher responses showed the highest positive results.
Content validity of android-assisted Problem Based Learning-oriented illustrated stories teaching materials
Authors: Zulifah Siti , Murtono  , Santoso  , Masfuah S 
Published: March 2021

Abstract
This study is a validation step, which aims to develop illustrated story teaching materials oriented problem-based learning with Android assistance. Specifically, the improvement of student learning outcomes in science was focused on Class IV in the Public Elementary School TelukKulon. This research is a validation stage which is part of research and development. This product contains science material in the form of audio-visual based learning videos, some problems must be solved and also games as feedback. Validation was carried out by four experts by expert judgment. The product was categorized as feasible and valid with an average validity of 3.65 or with very valid criteria. Based on data analysis, it is known that this teaching material is suitable for research.
Study of The Narrative Structure of Loram Kudus people as a means of Learning Literary Appreciation: Content Analysis based on Vladimir Propp
Authors: Majid M , Kanzunnudin M , Fathurohman I 
Published: March 2021

AbstractKudus is one of the cities located in central Java province. The folklore of the Holy City is very diverse. In each sub-district has a very interesting folklore and it also charged with local wisdom values. Researchers analyzed the story of the founding of the famous Wali Mosque in Loram Kulon village. As part of the literary work, the folklore of Wali’s founding at Taqwa Mosque and Sultan Hadirin contains pragmatic values that are very interesting to review. The research paradigm is a qualitative description as a research design with the content analysis method. According to Vladimir Propp, the data provider is done using library studies using data in writings as much as possible about structuralism studies. Data collection techniques are carried out with data-log tinging techniques (interview), observation, and documentation. The results of the study obtained two analysis results and discussions namely (a) the narrative structure of the folklore of Masjid Wali At-Taqwa and Sultan Hadirin and (b) the plan of implementing literature appreciation learning using the learning model think talk write (TTW).
Improving Critical Thinking Ability Through Discovery Learning Model Based on Patiayam Site Ethnoscience
Authors: Rihayati  , Utaminingsih Sri , Santoso  
Published: March 2021

Abstract
This study aims to determine the improvement of critical thinking ability toward grade IV elementary school student using Discovery Learning model based on Patiayam site ethnoscience. This research type is Quasy Experimental Design with the form of non-equivalent control group design. The sampling technique used is the type of Cluster Randong Sampling. The result of n-gain analysis show that the control class gets average 0,2535 as low category, while the experiment class gets average 0,5574 as medium category. The result of Independent Sample t-test show result of critical thinking ability on the observing with the result of Sig. (2-tailed) of 0,000 < 0,05. The conclusions of this study are the result of the critical thinking ability of the experimental group are higher than result of the control group.