bluuebunny/crossref_metadata_2025_split huggingface dataset:
Developing Community Information Group Website to Improve Digital Literacy
Authors: Setyaningsih Rila , Utama Shoffin Nahwa 
Published: March 2021

Abstract
Community Information Group is a public service institution as a community information center at Biting Ponorogo. Dissemination of information to the public is often an obstacle due to limited communication media. Then, word of mouth is often inaccurate, causing miscommunication. This research aims to develop a website as a community information center. As well as being a communication and information medium, this website development also aims to improve community digital literacy. This research used the System Development Life Cycle method. This study succeeded in developing a website for the Biting Community Information Group. The feedback from Biting Community Information Group peoples expected that these websites could be developed as a medium of communication and information for the community. This website can be accessed via a search engine (https://kimbiting.com/). The next research can measure the effectiveness of the Biting Community Information Group website as the communication media. Besides, future research also can develop another communication medium based on information and communication technology.
A preliminary study of biomass briquettes based on biochar from pyrolysis of durian shell
Authors: Saputro H , Yosin K A , Wijayanto D S , Muslim R , Fitriana L , Munir F A 
Published: March 2021

Abstract
Utilization of durian shell waste as feed biomass in the pyrolysis process has been carried out. The results of the pyrolysis process produce bio-oil, gas, and biochar. Pyrolysis biochar can be used as a potential source of energy by converting it into biochar briquettes. This research is making biochar briquettes using a mixture of water and starch. The ratio between biochar and starch is 9: 1. The mixed material is then made biochar briquettes using a briquette printer with a pressure of 0.5 MPa. The results showed that biochar briquettes had better performance than durian shell biomass.
Performance Test of Winglet Horizontal Shaft Wind Turbine Against Cut In Speed
Authors: Sangidzun Achmad , Wijayanto Danar Susilo , Saputro Herman , Soenarto  , Triyono Mochammad Bruri 
Published: March 2021

Abstract
Wind turbines are devices that convert wind kinetic power into electrical energy through generators. Currently there has been a lot of research on horizontal shaft type wind turbines to improve systems that work optimally. This study uses a 3 blade horizontal winglet wing turbine wind turbine with variations in pitch angle to increase the cut in speed value. The pitch angles used are 0°, 2°, 4°, 6°, 8°, and 10°. This study uses an NACA 4412 aerofoil with winglets added to the blade tip. The research method used in this study is the experimental method. The results showed that the highest cut-in speed values of three, four and five blades were obtained at a pitch angle of 10° at wind speeds of 2.3 m/s, 1.8 m/s and 1.8 m/s.
Analysis of Learning Speaking Skills Using the WhatsApp Application in Elementary Schools
Authors: Fahrudin Sigit Hasan , Winarni Retno , Winarno  
Published: March 2021

Abstract
The Covid-19 pandemic approaching the 21st century has had a significant impact in all fields, including education. Finally, all learning activities are carried out online or online. This study aims to analyze the implementation process of learning speaking skills using the WhatsApp group application, the obstacles faced, and the teacher’s efforts to improve speaking skills. This research was conducted at SD Negeri Katikan 1 and SD Negeri Katikan 2, Kedunggalar District, Ngawi Regency, East Java. This research uses descriptive qualitative research methods. The subjects used in this study were teachers of class V SD Negeri Katikan 1 and SD Negeri Katikan 2. The sampling technique used was purposive sampling. Data collection techniques used in this study were in-depth interviews and document analysis. Data analysis used interactive analysis techniques by Miles and Huberman. The result of this research is that the Covid-19 pandemic has had a huge impact on the learning process, learning elementary school speaking skills which are usually carried out offline has now been converted into online or online learning via WhatsApp. Learning of speaking skills is carried out through the WhatsApp feature, video calls, learning videos, pictures, and voice notes. Barriers to online learning are network problems, ownership of an android cellphone, and student discipline. The efforts made by the teacher to improve students’ speaking skills in online learning through WhatsApp is to familiarize students with speaking in every learning activity, such as apperception activities, core activities (presentation of material and assignments), and other activities (leading prayer, presentation).
The Implementation of Online-Based New Student Admissions in Surakarta
Authors: Istiqomah Rizlaili , Kristiani  , Wahyono Budi 
Published: March 2021

Abstract
The purpose of implementing this research is to determine the implementation of online-based new student admissions in the city of Surakarta, and the effectiveness of the implementation of online-based new student admissions in Surakarta. In the implementation this research using descriptive research with a qualitative approach. Technique for search subject with purposive sampling and snowball sampling, for collection data observation, interview and documentation, and to testing the validity of the data used data triangulation and methodological triangulation The results showed that the implementation of online-based new student admissions in Surakarta was implemented using a zoning system. Implementation of online-based new student admissions, there are several stages of implementation, namely starting with the preparations made by Education Department of Surakarta, then the implementation of online-based new student admissions carried out by Junior High Schools supervised by the Education Department of Surakarta. Online-based admission of new students begins with registration, filing of requirements, inputting data into the system, selecting, announcing the results of selection and re-registration activities; and in implementing online-based new student admissions at the Education Department of Surakarta, it already has an effective system in terms of indicators of goal achievement, availability of resources, good internal processes, and constituency satisfaction in implementing online-based new student admissions.
The Prototype of Rupiah Electronic Application for Retailers
Authors: Dewi Amina Sukma , Subarno Anton 
Published: March 2021

AbstractRetail traders rarely use rupiah values of less than one thousand rupiah. Moreover, the use of small money under one hundred rupiah is practically no longer used. From the buyer’s point of view, a reduction in the price of just one rupiah has been taken into account, especially in purchasing of a large quantity of goods, of course a slight reduction in price is very meaningful. This study aims to create a prototype electronic rupiah application in order to facilitate financial transactions, especially in the payment of goods’ prices with a value below one thousand rupiahs. The research method used is descriptive quantitative. The population of this study was all undergraduate students who visited the “Idaman” canteen at Sebelas Maret University with 32 respondents. The sampling technique used incidental random sampling, while the data analysis used was confirmatory factor analysis (CFA). The results showed that the application prototype of electronic rupiah needs to pay attention to three things, namely feature design, transaction design, and user account’s security design. Feature design is a basic view of display that needs to be made in such a way as to be attractive and easy to understand. Advanced display design is the details of the buttons on the basic view of menu display which contain transaction/arrangement designs. Account security design is a confirmation of account operation via email and data backup to anticipate if the internet connection is lost. Confirmation is used in making payments via password and or SMS (short message service). The details of these three designs will be discussed in this article.
Mathematics Game as Interactive Learning Media In COVID-19 Pandemic Era
Authors: Graceota A , Budiyono  , Slamet I 
Published: March 2021

AbstractThe COVID-19 Pandemic requires teachers to innovate. Mathematics game on computer or android platform is one of the utilization of technology in the 4.0 era as interactive learning. This type of research is research and development which aims to produce a proper and interesting mathematics game application based on multimedia for junior high school students. Appropriate learning media here is learning media that has valid, practical and effective criteria. The mathematics game application in this research was developed by Microsoft PowerPoint software. This research was using preliminary study and product development stages. The subjects of this research were the seventh-grade students of junior high school in Tuntang Sub-district. The scoring results by the material expert get the average score 42 then categorized as very feasible, while the scoring results by the design or display expert get the average score 44 then categorized as very feasible. On the limited scale trial test get the score of 42 then categorized as very good, and on the wide scale trial test get a score of 43 then categorized as very good. Based on the results can be concluded that the mathematics game is very feasible and interesting for junior high school students.
The Effect Mathematics Disposition of Vocational High School Students on Mathematical Problem-Solving Ability
Authors: Yustiana Y , Kusmayadi T A , Fitriana L 
Published: March 2021

Abstract
Problem-solving ability is a basic skill of the 21st century. The problem-solving ability of each individual is not only about the result assessed but also their attitude in the problem-solving process. The attitude here is a mathematical disposition. This research used descriptive qualitative analysis to determine and describe the extent to wich the indicators of mathematical problem-solving abilities have been achieved and to determine the level of the students’ mathematical disposition categories. Sampling was conducted by utilizing purposive sampling technique and obtained three subjects from the eleventh-grade students of SMK Muhammadiyah Salatiga. There were two instruments used in this research there are a mathematical problem-solving ability test and a mathematical disposition questionnaire. The validity of the data used was the data triangulation method. Results showed that student in the high mathematical disposition category is able to carry out all of Polya’s problem-solving stages. Student in the moderate mathematical disposition category can carry out the stages of understanding the problem, devising the problem-solving plan and carrying out the paln. In addition, student in the low mathematical disposition category can carry out the stage of understanding the problem.
Junior High School Students’ Creative Thinking Process on Equation of Straight Lines
Authors: Auliasari R , Sujadi I , Siswanto  
Published: March 2021

Abstract
The creative thinking process needs to develop for junior high school students because of the transition period from elementary school level. This study describes the creative thinking process of junior high school students in finding solutions to a math problem. The method used in this research is descriptive qualitative. The subjects in this study were two class VIII students. Data collection techniques used were test methods and semi-structured interviews. From the data, it was obtained that Subject 1 and Subject 2 had differences in the preparation and incubation stages where at the preparation stage Subject 1 read and observed the questions given silently then wrote down the information contained in the questions while Subject 2 read and observed the questions given softly without writing the information in the questions. In the incubation stage, Subject 2 took a longer time than Subject 1 in determining the strategy to be used. At the illumination and verification stage, Subject 1 and Subject 2 have the same thing to find a strategy to solve the given problem and only re-check the answers or solutions obtained when interviewed.
Elements of non-Euclidean geometry in the formation of the concept of rectilinear placement of points in schoolchildren
Authors: Kuz’mich V I , Kuzmich L V 
Published: March 2021

AbstractThe paper deals with issues of the metric geometry basics. In particular, the concept of rectilinear placement of points is considered, based on the axioms of the distance between two points of metric space. This approach allows forming a modern view of the property of straightness in the pupils. This paper analyzes the content of existing mathematics textbooks for general educational institutions to acquaintance of pupils with the elements of metric geometry. The first part of the paper provides information about the rectilinear placement of points; it can be used in Geometry lessons in the 7th– 9thgrades. Set of linear functions are considered as examples of points of metric space. The similar work was done in the second part of the work for geometric material of the 10th– 11thgrades. In addition, some simple examples of metric spaces that may be accessible to pupils of the relevant classes are discussed. The purpose of the work is gradually introduction of pupils to the elements of non-Euclidean geometries, to form a generalized notion of the distance between the points and rectilinear of their placement. The work can be used for Mathematics teaching at school and for retraining of teachers of Mathematics.
Replication, pseudoreplication and model experiment in the study of population genetics
Authors: Komarova E V 
Published: March 2021

Abstract
The paper is dedicated to the problem of true and pseudoreplication of a biological experiment, in particular in the educational process. It was found that this issue is relatively new and actual for the methodology of biological experiments in general. Its solution in science ensures the veracity of the results obtained and the relevancy of the formulated conclusions. In biology teaching methods at school, the problem of true and pseudoreplication of the experiment was not reflected. The author covers an issue of true replication teaching when setting up a model experiment to study genetic-evolutionary processes in populations. The paper discloses the experience in evolution of a model experiment and its development aimed at formation of ideas about technical and biological replication by the example of study of the genetic structure of an ideal population in generations. For this purpose, there was developed a web page that allows to automatically implement technical and biological experiment replication. There was described an experience of approbation of the proposed variant of the experiment, and its difficulties and advantages were revealed.
The application of geographic information systems in schools around the world: a retrospective analysis
Authors: Kholoshyn I , Nazarenko T , Bondarenko O , Hanchuk O , Varfolomyeyeva I 
Published: March 2021

AbstractThe article is devoted to the problem of incorporation geographic information systems (GIS) in world school practice. The authors single out the stages of GIS application in school geographical education based on the retrospective analysis of the scientific literature. The first stage (late 70 s – early 90s of the 20thcentury) is the beginning of the first educational GIS programs and partnership agreements between schools and universities. The second stage (mid-90s of the 20thcentury – the beginning of the 21stcentury) comprises the distribution of GIS-educational programs in European and Australian schools with the involvement of leading developers of GIS-packages (ESRI, Intergraph, MapInfo Corp., etc.). The third stage (2005–2012) marks the spread of the GIS school education in Eastern Europe, Asia, Africa and Latin America; on the fourth stage (from 2012 to the present) geographic information systems emerge in school curricula in most countries. The characteristics of the GIS-technologies development stages are given considering the GIS didactic possibilities for the study of school geography, as well as highlighting their advantages and disadvantages.
Analysis of natural and technogenic factors on the seismicity of Kryvyi Rih
Authors: Pihulevskyi P G , Anisimova L B , Kalinichenko O O , Panteleeva N B , Hanchuk O V 
Published: March 2021

Abstract
Information is provided on the number of earthquakes in Kryvyi Rih and their parameters for the period 2007–2018. The types of seismic phenomena, the criteria for their identification are considered. The most probable natural and technogenic factors of the epicenters of local earthquakes are established by analyzing their location and sequence in time from the point of view of the tectonic features of the territory and the nature of the technogenic interference in its structure. The necessity of creating a local seismological network in Kryvyi Rih is substantiated. With a view to predict hazardous seismic phenomena, there is a need to continue hydrogeodynamic monitoring of ground water, to introduce seismic gravity monitoring and to conduct microseismic monitoring at mining enterprises. The results of systematic monitoring shall serve as the basis for seismic microzoning of the city. It is emphasized that popularization and dissemination of knowledge about the seismicity of mining regions among the population shall play an important role in the implementation of this task. The research materials can be used in the master’s degree programme within the framework of higher education system and in advanced training of specialists in the mining industry.
Information technology for mobile perimeter security systems creation
Authors: Lobanchykova N , Kredentsar S , Pilkevych I , Medvediev M 
Published: March 2021

Abstract
The main aim of this research is the creation of information technology for mobile (of rapid deployment) security systems of the area perimeter. This system appears to be a complex of models and methods, information, software, and hardware mean that have interacted with users during decision-making and control of implementation for management solutions. The proposed information technology aimed at improving the protection level for security departments by automating the process of danger detection for perimeters and decision-making for alarm. The structural model of the system, the model of the system's components interaction, and the model of identifying the subjects of emergency threats have been proposed. A method for identifying unauthorized access to the perimeter of the secure facilities, using the production model of knowledge representation, was created. It is a set of linguistic expressions (such as "IF-THEN") and the knowledge matrix. The method of ranking for objects, which are threats of unauthorized access to the perimeter for secure facilities, has been proposed. The practical value of work consists of the possibility of the use of this information technology by perimeter's security systems of various objects. Proposed models are complete and suitable for hardware and software implementation.
Single-rotor integrating gyroscopic gravimeter
Authors: Tkachuk A , Bezvesilna O , Dobrzhansky O , Ostapchuk A 
Published: March 2021

Abstract
The paper describes the gravity acceleration sensor (GAS) design, the technical characteristics of which provide an increase in the static transfer constant of the GAS, the ability to determine the current static transfer constant of the GAS, reducing the level of noise effects in the output signal of GAS. The acceleration vector components from the side of a moving vehicle add a noise to the gravity vector components. These investigations give an answer how to obtain of GAS’s desired metrological features by the developing of new GAS based on pendulous integrating gyroscopic accelerometer. The presented material can be seen as an example of how to explore a gyro system mechanics and how to develop new gyro systems structure. The presented methods and the sequences of expressions can be used in master’s and bachelor’s disciplines in the field of applied mechanics, instrument development and automatic control.
Development of career guidance quests using WebAR
Authors: Shepiliev D S , Semerikov S O , Yechkalo Yu V , Tkachuk V V , Markova O M , Modlo Ye O , Mintii I S. , Mintii M M , Selivanova T V. , Maksyshko N K , Vakaliuk T A , Osadchyi V V , Tarasenko R O , Amelina S M , Kiv A E 
Published: March 2021

Abstract
Career guidance quests that involve solving intellectual and search problems in a game are associated with one’s future career, being one of modern means of recruiting school leavers to vocational and higher educational institutions. Such specific computer tools of virtual and augmented reality as pupils’ mobile Internet gadgets can enhance visual character and interactivity of quest problems. The article deals with applying augmented reality in the web environment to solving these tasks. The authors propose a prototype of a career guidance quest system using WebAR technology.
Petri Nets Android application as a mobile aid for students’ mastering modelling
Authors: Bilousova L , Gryzun L , Sivochka I 
Published: March 2021

Abstract
Building models of various processes and their further investigation has been always in focus of different specialists’ training. There are some quite well known mechanisms and tools of modelling. However, Petri nets theory has found its wide application to the real-life parallel processes modelling. Petri nets give powerful facilities for dynamic models building and enable comprehensive learning of the process peculiarities. Hence, it is important to have relevant tools which allow to apply Petri nets potential to educational practice on purpose of earning by students skills of models building and investigation. The aim of the paper is to depict the functionality of the authors’ mobile Android application “Petri Nets Tool-Kit”, and to specify facilities and examples of its using for mastering modelling by students. Developed and represented in the paper mobile application provides students with the set of tools which enables to create, edit, save their own Petri nets as well as to change their parameters, visualize changing and play various scenarios of the modelled process. The “Petri Nets Tool-Kit” also contains relevant theoretical materials and the set of ready-made Petri nets examples, which makes the application attractive for mobile learning both in classroom activity and in students’ independent work in the context of their vocational training in terms of different specialties. The proper stages of learning activity for step-by-step mastering by students the basics of modelling and simulation are disclosed. It is shown that “Petri Nets Tool-Kit” is available exactly in its portable form for Android OS, which encourages students to mobile learning and arms them with a convenient simulation tool provoking them to improve their modelling and investigative skills anywhere during the day. The prospects of the work are outlined in terms of the empirical research as for validating the impact of modelling activity in the elaborated application on the trainees’ level of modelling skills.