bluuebunny/crossref_metadata_2025_split huggingface dataset:
A review for threshold concept identification methods in science
Authors: Hendrawati R , Mulyani S , Wiji W 
Published: March 2021

Abstract
The research of threshold concept has been vastly developed in various discipline including in the field of science during the last two decades. This causes the method to identify threshold concept increases in its variety. This research attempts to provide a general description of several methods used to identify the threshold concept in science. Method used in this research is document analysis method, which analyzes published articles and focuses on threshold concept identification method in science. Based on article analysis, it is obtained that the most often used method in threshold concept identification researches is interview, followed by survey, focus-group discussion, content analysis, test, workshop, concept maps and quiz. Therefore, researchers should have a good background knowledge regarding various method used in threshold concept research, so they can choose which method that would be effective and give the most optimal result for their own research.
Multiple representation: The teacher’s perception in chemistry learning
Authors: Mindayula E , Sutrisno H 
Published: March 2021

Abstract
This study aimed to explore the teacher’s perception of multiple representation in chemistry learning. The research design in this study was descriptive qualitative study. The participant in this study consisted of six chemistry teachers from several senior high schools in Indonesia. The semi-structured interviews were used for data collection. Each sample was asked about their perceptions of multiple representations in chemistry learning process. Data were analyzed by coding which were then grouped into themes. In this study, the researcher find that the teacher has actually applied chemical representations in chemistry learning, but the teacher is not yet familiar with the term of multiple representations in chemistry. Then, representations level that are often applied by teachers in learning chemistry are symbolic and macroscopic representations. Meanwhile, submicroscopic representations are still difficult to apply by teachers in chemistry learning process.
Potency to overcome misconceptions by using multiple representations on the concept of chemical equilibrium
Authors: Harza A E K P , Wiji W , Mulyani S 
Published: March 2021

Abstract
This study aims to analyze the potential of some representations in overcoming misconceptions about the concept of chemical equilibrium. In this study using research and information gathering, the first stage conducted is related to articles relating to misconceptions that exist on the concept of chemical equilibrium, obtained in chemical equilibrium, then carried out an analysis of 14 articles, which cite misconceptions on chemical equilibrium, from this article a misconception that is often found is that the rate of the forward reaction is not the same as the rate of back reaction. From this collection of articles, 5 general chemistry textbooks were then reviewed, which presented the concept of chemical equilibrium for multiple representations, to overcome the misconceptions associated with the articles that were analyzed previously. The results obtained from general chemistry textbooks with several representations are able to overcome misconceptions derived from article analysis and can help students visualize the observed concept changes.
Character values-loaded chemistry module development in redox reaction and compound nomenclature materials to improve learning outcome of high school students
Authors: Haryani H , Supriatno  , Sulastri  
Published: March 2021

Abstract
Several values came from learning sources are needed to support character-based learning. This research aims to produce character values-loaded chemistry module in redox reaction and compound nomenclature materials. The module contains various values: religious, intellectual, education, moral-ethics, economic (practical), and social-politics. This research adapted R&D with Borg & Gall model. Trial product was implemented for 30 grade X students of State Senior High School Banda Aceh. Data were collected using questionnaire, written test, and documentation. Analysis of needs showed that modules are limited which supported character-based learning. The results indicated that the module is very feasible to be tested for learning as shown as expertise assessment with 84.94%. In addition, the percentage is also supported by limited trial on MGMP chemistry teacher with 85.29% for module feasibility. After applied for learning, the learning outcomes of redox reaction and compound nomenclature were improved based on moderate score level of N-gain with 0.63. The students’ perception indicated their acceptance for developing module with various categories percentages, 39.51% strongly agree, 51.36% agree, 7.16% doubtful, 1.85% disagree, and 0.12% strongly disagree. Therefore, the character values-loaded module is feasible to be tested and used for learning because it successfully improved students learning outcome.
Profile of evaluative thinking skills of chemistry education pre-service teachers on theme of carbohydrates in food chemistry lectures
Authors: Sofia  , Permanasari A , Sholihin H , Supriyanti FMT 
Published: March 2021

Abstract
This study aims to determine the profile of evaluative thinking skills (ETs) of Chemical education pre-service teacher on the theme of carbohydrates in food chemistry (FC). The research method used was descriptive qualitative with a research sample of 31 students from 2013, 2014 and 2015 who have attended FC lectures in one of the Chemical Education department in South Sumatra. The instrument used was a test of ETs totaling 4 questions that had been validated. Indicators of ETs to be achieved include 1) Asking questions. 2) Seek deeper understanding through reflection and perspective, and 3) Making informed decisions in preparation for action. The results showed the profile of students’ ETs on theme carbohydrates in FC lectures showed that the average student ETs were classified as low. Generally, students have demonstrated skills in asking questions adequately, but still show weaknesses in reflecting and perspective thinking. Likewise decision-making skills also need to be improved. ETs are needed so that students are able to do self-evaluation and introspect their own weaknesses to be able to think more forward.
Improving students’ mathematical problem solving abilities through online project-based learning models with the STEM approach
Authors: Nurhayati  , Priatna N , Juandi D 
Published: March 2021

Abstract
This study aims to analyze the improvement of students’ mathematical problem solving abilities. This is a quantitative research with a quasi-experimental method. The population of this study is the ability to solve mathematical problem of class XI students in one of senior high schools in Karawang (2019/2020 school year). The sample used consisted of 33 of control class who received conventional online learning and 36 students of experiment class who receive Online PJBL-STEM. The instrument used was a mathematical problem-solving ability test. Data analysis in this study used the Mann-Whitney test. The result show that there is a significant improvement of problem solving ability between two class. Increasing the mathematical problem solving ability of students online class PjBL STEM is higher than conventional online classes.
The influence of STEM project-based learning on students’ motivation in heat transfer learning
Authors: Salikha U A , Sholihin H , Winarno N 
Published: March 2021

Abstract
Different types of skills are required to be able to remain competitive in 21st-century global developments, particularly in science, technology, engineering, and mathematics fields. The purpose of this study was to investigate the influence of STEM project-based learning on students’ motivation in learning heart transfer. The pre-experimental method with one group pre-test post-test design was implemented. The sampling technique used in this study was convenience sampling. The samples of this study consist of 26 students who come from two different schools in 7th grade. Student’s motivation is measured using the SMTSL questionnaire, and the data result analyzed using SPSS software. The result of this study showed that the implementation of STEM project-based learning gives an improvement in students’ motivation significantly. Although N-gain values are 0.06, which categorized as low levels, the statistical test shows that there is a significant difference before and after the implementation of STEM project-based. According to this research, STEM project-based learning can be an alternative strategy to improve students’ motivation towards science learning.
Extrinsic Motivation Influencing Vocational Students’ English Achievement on Hunting Bule Before and During Pandemic
Authors: Pinem Y A 
Published: March 2021

AbstractMotivation drives learners to achieve their goals of learning including vocational students with work-oriented study. External pressures, expectation or rewards pose different challenge when it comes to pandemic situation. This study fills gap by examining vocational students’ elements of extrinsic motivation before and during Covid-19 strike to accomplish final task to interview English natives and their effects on final achievement. Respondents were vocational students (n=75) participated in English class for two semesters in a row (before and during pandemic). Students’ motivations on doing “Hunting Bule” before (x1) and during (x2) pandemic were measured. Data were later analyzed using variance and interpretation. External motivation before and during pandemic are proven to give contribution to the final score. However, some factors in one variable seemed to outperform the other in vice versa. Technology using is considered both motivational and demotivational for students during the pandemic, yet is good to accelerate education industry 4.0.
The performance of information systems: Empirical research on government organization
Authors: Budiarto D S , Ningrum S W , Yennisa  , Sari R P , Diansari R E 
Published: March 2021

AbstractThis study aims to examine the effect of user involvement, personal technical abilities, top management support, education & training programs, and formalization of information systems development on the performance of accounting information systems in regional government organization (OPD) in Sleman Regency. The number of samples used was 76 respondents with a purposive sampling method. The multiple linear regression is used as a technique analysis. The results of the study prove that the ability of personal skills and education & training programs has a positive effect on the performance of accounting information systems. In contrast, user involvement, top management support, and formalization of information system development do not affect the performance of accounting information systems.
Weed control technology to increase growth and yield of mungbean (Vigna radiata L.) in soils types
Authors: Paiman  , Sukhemi  , Widyaningsih Nina 
Published: March 2021

Abstract
Mungbean is a plant that is cultivated by most of the people of Indonesia at the time before the dry season in the former paddy fields. The presence of weeds in crops that are not controlled by farmers caused the low yield of mungbean obtained by farmers. This study aims to determine the weed control technology to increase the growth and yield of mungbean in soil types. This experiment is a factorial experiment arranged in a completely randomized design (CRD) and repeated three times. The first factor is the weed control technology consisting of three kinds: weedy, hand weeding, and tool weeding. The second factor is the type of soil that consists of four types: coastal sand, latosol, volcanic, and regosol. The results showed that weed control at the age of 20 days after planting (DAP) could increase the growth and yield of mungbean in soil types, except in volcanic soils. Weed control with the hand weeding in coastal sand can give a higher production than tool weeding. Weed control technology with the hand and tool weeding way gives the results of mungbean relatively similar to latosol and regosol soils.
Improve ability and skills of beginning reading without spelling by using andriod-based macromedia flash media application
Authors: Wibawa  , Titik M W 
Published: March 2021

Abstract
The main need for the early childhood learning process is reading skills. Observation of case study results in SD. Klopo Sawit, Build Kerto Sleman. Learning methods and the use of learning media are not quite right so that students still have difficulty reading and are lazy to learn. The purpose of this study is to help students become skilled in reading. The research method uses class action and uses Android-based applications without spelling. This application combines play and learning activities with research subjects in grades 1 and 2 with correspondence of 48 students. The Likert scale questionnaire test before use was tested on 15 students randomly, with the results of the validity of 22 items> the value of rtabel 0.514 with α = 5% and the reliability was obtained 0.856> r table (0.514) so that it can be said to conclude that the variable is valid and reliable. The results of the t-test before and after using an android-based application with the variables of letter memorization, visual learning styles, reading skills, and reading comprehension obtained a significance value (2-tailed) of 0.000 (p <0.05). Students read faster and more skilled at reading without spelling using an android-based reading application.
Implementation of Internet of Thing Technology for Infrared Therapy Device Design
Authors: Fauzi Ekha Rifki 
Published: March 2021

Abstract
This study aims to develop an infrared therapy device by embedding the internet of things technology in the research area of therapy devices, especially infrared therapy. Low back pain is a disease that attacks the back muscles that can cause disability and discomfort in activities. This system was developed with an automatic system located in the automation of the lights off and the LM35 temperature sensor, which records the temperature if you feel hot and the timer setting that appears on the LCD and the android interface. This system is based on the internet of things to be monitored from anywhere, anytime. This study consists of an LED lamp, cloud system, and ATmega 328 microcontroller. The study and literature review are carried out following the device development method that embeds the internet of things technology systems in infrared. This study’s result is a prototype design of an infrared therapy device with the internet of things technology that can be used to treat people with low back pain.
The Model Prototype of WebGIS-based for Organizational Asset Management
Authors: Sutanta E , Nurnawati EK , Iswahyudi C , Kumalasanti RA 
Published: March 2021

Abstract
Large organizations generally have assets distributed over separate locations. The problem is, decisions or policies will be easier to make if they are supported by a system that can dynamically visualize the existence of every asset owned by the organization. The WebGIS-based asset management approach is an alternative solution to this problem. This study examines a proposed WebGIS-based organizational asset management model. An application prototype was developed to test the proposed model using PHP, JavaScript, HTML, and CSS software. The Google Maps API is also used to create a base map. On the back end, authorized users can control and perform input, edit, and delete asset data. On the front end, public users can access public information. The test results of the developed prototype can provide various information on organizational assets visually based on digital maps that suit the needs of its users. The developed prototype still needs to be tested further, especially concerning security aspects, browser compatibility, and display design suitability.
Analysis of the Wood Production Machine Process for the Application of Wayang Klitik Technology
Authors: Fajrie N , Purbasari I , Setiawan D 
Published: March 2021

Abstract
A review of basic research on wood commodities in the making of wayang klitik aims to analyze the characteristics of the flat material and characterization characters. The production process applies wood shaved and splits machine technology. The research stages used a study of the needs of craftsman, designing machine prototypes, product testing, and production implementation. The results of this research are to use the rubber roller against the shaved machine in the left position and split the wood in the right position. The machine’s production capacity has a power of 6.5 meters/minute. Engine technology is driven by a 1 Phase 220VAC 2500 RPM 0.5 KW electric motor with chain transmission, gear, pulley, and v belt. The quality of the pieces of wood produces a length of 80-100 cm and a width of 5 cm with a quantity of 5 pieces/minute of wood that is ready for use. This review of findings has identified the creative industry product design from previous research. The follow-up to these results is possible as other economies, education, culture research.
Student Awareness of Digital Payment Services (Case Study in Indonesia)
Authors: Iradianty A , Aditya B R 
Published: March 2021

Abstract
The industrial revolution 4.0 increases the level of awareness of various groups of people in using digital payment services. This study investigates the student awareness of digital payment services in the higher education level in Indonesia. The main contribution of this research is to provide evidence about the relationship between demographic variables and the level of awareness of digital payment services among students in Indonesia. This study is based on a sample of 104 students from various higher education institutions in Indonesia. The results of this study concluded that there was no significant difference between Indonesia student demographics and the level of awareness of digital payment services. The findings of this study will be useful for digital payment service providers in providing an initial understanding of student awareness of digital payment services in Indonesia.
Effects Of Sucrose Addition To Lactic Acid Concentrations And Lactic Acid Bacteria Population Of Butterfly Pea (Clitoria Ternatea L.) Yogurt
Authors: Suharman  , Sutakwa A , Nadia L S 
Published: March 2021

Abstract
Butterfly pea yogurt (BPY) is a result of processed milk with the addition of the extract of the butterfly pea (Clitoria ternatea L.) Through the fermentation process of Lactobacillus bulgaricus and Streptococcus thermophilus as a lactic acid bacteria. The butterfly pea (Clitoria ternatea L.) is a source of the anthocyanin and potentially a natural blue dye. The study aims to determine sucrose’s influence on lactic acid production and lactic acid bacteria of butterfly pea yogurt. The research design uses a completely random design. The study uses four treatments is a P1: 0% sucrose addition, P2: 4% sucrose, P3: 8% sucrose, P4: 12% sucrose, and yogurt control without sucrose addition as a comparison. Data is analyzed using variance analysis. Results showed that the concentration of lactic acid yogurt control 1.06 ± 0.79, P1= 1.18 ± 0.22, P2=1.55 ± 0.39, P3=1.85 ± 0.24 and P4=2.0 ± 0.31. Whereas lactic acid bacteria population of yogurt control are 3,1×106±0.79, P1=5.33×106±0.97, P2=7.60×106±0.26, P3=3.35×107±0.98 and P4=2.86×107±0.53. The results indicate that the addition of sucrose 12% increase the concentration of lactic acid and lactic acid bacteria population significantly (p<0.05) of butterfly pea (Clitoria ternatea L.) yogurt.
Developing Mathematics HOTS Test Items in Essay
Authors: Susetyawati M.M. Endang , Nuryani Christina Eva 
Published: March 2021

Abstract
This research aimed to develop Mathematics HOTS test items in essay type in improving mathematical communication of tenth grade Science students in Senior High School. Research Development was applied as the research method. The Research Development used in this research was Thiagarajan, Semmel and Semmel model consisting of defining, designing, developing, and disseminating in developing qualified mathematics learning test instrument. In this research, the expert judgements by mathematics lecturer and teacher were conducted toward the developed instruments. There were field trials conducted for empirical validity. The field trials involved tenth grade Science students in 11 State Senior High School. Data analyzing technique used qualitative analysis to interpret the result of the expert judgments and quantitative analysis to test item validity and instrument reliability containing the developed test items. Furthermore, among seven HOTS test items for mathematical communication skill that were written, there were resulted three HOTS test items for mathematical communication skill which were valid, reliable, and practical.
An Entrepreneurial Capacity Highlight In Feather Duster SMEs, Karanglo Village, Klaten Selatan District
Authors: Afriany Arista Natia , Ardiyanto Faizal , Sumantika Ahsan , Prakosa Adhi 
Published: March 2021

Abstract
Nowadays, Small and medium-sized enterprises (SMEs) are currently starting to grow significantly due to the simplicity of business licensing. These SMEs are the driver of the economy in Indonesia. the rapid development of the SMEs have a good impact on the Indonesian economy, so with proper and good management and entrepreneurship it will have good impact on their performance as well. Therefore, it will be better if they can face the various challenges they would encounter in the future, one of several steps that can be decided is the use of knowledge in the management which can be implemented in the decision-making process in the businesses. The purposes of this community service of Management Department, University of PGRI Yogyakarta are to improve the quality of the products produced by the Karanglo Village SMEs in Klaten Selatan District They can implement the knowledge, especially in management fields related to entrepreneurship thoroughly. As we can inform earlier that these business group will have the potential to make a positive contribution to the Indonesian economy.
Pl/sql design to determine the training data pattern on the Adaline neural network
Authors: Hastono Tri , Syah Firdiyan 
Published: March 2021

Abstract
Inventories of goods in business activities greatly affect the smooth running of business activities. The durian fruit sales business is also affected by inventory. Durian fruit sellers must be able to predict the needs of durian fruit customers so that sales business activities run stable. For sellers with low durian fruit sales, they will have no difficulty predicting demand for durian fruit. But for sellers of durian fruit in large quantities, it will take a long time and is prone to errors. An error in the prediction causes the sales business to lose. It takes high accuracy and fast time to make predictions. Adaline neural network has been proven to be able to solve prediction problems precisely. Adaline network performance is affected by training data. Durian fruit sales data is used as network training data to improve network performance. The focus of this research is the design of the pl/sql database to determine the training data input pattern in the android application to predict the number of durian fruit customer needs. Types of pl/sql used in this study are procedures and functions. Meanwhile, the method used to design pl/sql is an extreme method.