bluuebunny/crossref_metadata_2025_split huggingface dataset:
The theory of the chain fountain revisited
Authors: Anghel Dragos-Victor 
Published: December 2021

Abstract
We analyze the chain fountain effect-the chain siphoning when falling from a container onto the floor. We argue that the main reason for this effect is the inertia of the chain, whereas the momentum received by the beads of the chain from the bottom of the container (typically called “kicks”) plays no significant role. The inertia of the chain leads to an effect similar to pulling the chain over a pulley placed up in the air, above the container. In another model (the so called “scientific consensus”), it was assumed that up to half of the mechanical work done by the tension in the chain may be wasted when transformed into kinetic energy during the pickup process. This prevented the chain to rise unless the energy transfer in the pickup process is improved by the “kicks” from the bottom of the container. Here we show that the “kicks” are unnecessary and both, energy and momentum are conserved-as they should be, in the absence of dissipation-if one properly considers the tension and the movement of the chain. By doing so, we conclude that the velocity acquired by the chain is high enough to produce the fountain effect. Simple experiments validate our model and certain configurations produce the highest chain fountain, although “kicks” are impossible.
Digital literacy of indonesian prospective physics teacher: Challenges beyond the pandemic
Authors: Rahmawati A Z , Haryanto Z , Sulaeman N F 
Published: December 2021

Abstract
Pandemic covid-19 reinforces the needs of digital technology in all aspects, including education. Digital literacy skills become essential for all teachers and also prospective teachers. This study aims to find an overview of the digital literacy capabilities of prospective physics teachers. This study was a quantitative descriptive research with data collection using an instrument in a questionnaire that included 29 items from 4 aspects of digital literacy: Accessing content, creating content, transliteracy, and evaluating content. The sample consisted of 171 physics education students from 3 State Universities in Indonesia. The result showed the level of digital literacy in the moderate category. From the four aspects, creating content related to creating or presenting information on various digital platforms showed lower results than accessing content, transliteracy, and evaluating content. In a prospective science teacher curriculum, creating learning content on digital platforms needs to be developed. This research finding suggests that digital literacy needs to be enhanced during the prospective science teachers’ program.
Analysis of problem-solving ability of physics education students in STEM-based project based learning
Authors: Susanti E , Maulidah R , Makiyah Y S 
Published: December 2021

Abstract
This study is a quantitative descriptive. This study aimed to describe the problem-solving abilities of physics education students in the 2nd School Physics Laboratory course. The subjects of this study were 65 people consisting of 2 classes with the determination of the sample using the purposive sampling technique. Data collected is done through a problem-solving ability instrument which includes four indicators recognizing problems, planning solutions, solving problems, and evaluating. Based on the results of the data analysis, the conclusion is that students’ problem-solving abilities have been at a high level with a percentage average of 79. The caused by learning that applies STEM-based Project-Based Learning (PjBL). The learning helps develop students’ abilities in planning, communicating, solving problems, and making the right decisions from the problems given. This learning can train students’ skills in planning, organizing, negotiating, and making conventions about the issues of the task to be done, who is responsible for each task, and how the information will be collected and presented.
Physics e-module: A review and bibliometric analysis
Authors: Dewantara D , Sofianto E W N , Misbah  , Munawaroh D 
Published: December 2021

Abstract
The Covid-19 pandemic has brought significant changes in education and the tendency of face-to-face learning to be online. Therefore, several studies have developed e-modules to support learning, one of which is physics learning. This research is the result of a review based on a bibliometric analysis of the physics e-module. The data was obtained based on articles published in journals and proceedings on Google Scholar in 2020-2021, namely when the Covid-19 pandemic happened. These were selected via Publish or Perish (PoP) software. The data has been sorted until found 74 articles from 142 articles. The data were processed in depth using VOSviewer software. The results showed how the network, overlay, and density were between pieces. It also showed other information regarding the distribution of the authors and their affiliations. Based on this analysis, it was suggested that there is a need to strengthen collaboration between writers and research focused on students’ abilities and skills.
Development of student worksheets based on STEM approach to improve students’ critical thinking skills
Authors: Sutarto  , Prihatin J , Hariyadi S , Wicaksono I 
Published: December 2021

Abstract
The development of Worksheets based on the STEM approach pays attention to the elements of writing, the hierarchy of materials, and the selection of questions as an efficient and effective stimulus. This research aims to produce Worksheets based on the STEM approach that meets the feasibility of improving students’ critical thinking skills. The development model in this research refers to the 4D (four-D) research and development model by taking sample data from high school science students in the former Besuki Residency, namely Jember, Situbondo, Banyuwangi, and Bondowoso Regencies. The research instrument uses tests, observations, and documentation. The research results show that Worksheets based on the STEM approach meet the valid, practical, and effective criteria for improving students’ critical thinking skills. This research implies that the availability of Worksheets is expected for students to research teaching materials independently. In Worksheet, students will get materials, summaries, and assignments related to the material.
The effect of physics learning using ardouno uno based media on higher-order thinking skills
Authors: Matsun  , Boisandi  , Sari I N , Hadiati S , Saputri D F 
Published: December 2021

AbstractThe purpose of this study was to determine the effectiveness of contextual media with Arduino Uno-based media on students’ higher-order thinking skills on density material. The population of this research is class XII IPA MAN 1 Pontianak totaling six classes, with samples of class XII IPA A and class XII IPA B. This study is quasi-experimental with a pretest-posttest group design—sampling with a simple random technique to determine the experimental and control classes. The data collection technique used is a test in the form of pretest and post-test questions. The data analysis technique used is the one-party t-test based on the sig value and the normalized gain (N-gain). The results of research data analysis showed that contextual learning media with media based on Arduino Uno had a positive effect and improved students’ higher-order thinking skills than students who used conventional media. It is indicated by the results of the t-test with a value of sig. The post-test score is 0.001, and the results of the improvement test with the N-gain of the experimental class are in the medium category, higher than the control class category, namely low. So that learning physics using learning media based on Ardouno Uno has a positive effect and can improve students’ Higher Order Thinking skills.
Electronic thermodynamics teaching materials based on authentic learning to practice students’ problem-solving skills: Aspects of validity
Authors: Rizki M , Wati M , Misbah M 
Published: December 2021

AbstractThe purpose of this study was to describe the validity of authentic learning-based electronic thermodynamic teaching materials to train students’ problem-solving skills during the covid-19 pandemic. The model used in this study was the ASSURE development model, which only reached the third stage, namely Selection of Media and Materials. The validation of teaching materials was assessed by three validators consisting of two physics education academics and one practitioner. Based on the validation results, it was found that the authentic learning-based electronic thermodynamic teaching material for training students’ problem-solving skills was declared valid with a value of 3.14. Appropriate teaching materials can then be used in schools’ teaching and learning processes and tested for practicality and effectiveness.
Accelerating teacher career through improving competence in scientific publications: Physics teacher perspectives
Authors: Admoko S , Supardi Z A I , Wasis  , Suprapto N , Realita A , Prahani B K , Muhayatin S , Irfa’i M , Dakri  , Suyanto  , Hati H S , Misbah M 
Published: December 2021

AbstractIn promotion of teachers career to a higher level are required to write scientific papers. This study aims to describe the physics teacher’s perspective on the promotion process they have experienced so far and the obstacles they face. This research is a descriptive research, data collection through questionnaire and information deepening is done through interviews. The sample of this research is 73 physics teachers. Based on the results of data analysis, it can be seen that more than 65% of physics teachers have difficulty in fulfilling scientific publication requirements for promotion, 85% of respondents have done classroom action research (CAR), but only about 44% have published in the form of scientific articles. In general, teachers have experience in conducting CAR, but they still lack experience in writing scientific articles. Most physics teachers expect local schools and education offices to cooperate with universities to organize training and mentoring of scientific publications. This study can be concluded that the main obstacle to the promotion of physics teachers is caused by the low ability to carry out scientific publications. The results of this study are expected to provide consideration to stakeholders in making decisions and actions related to teacher promotion, especially regarding the mandatory requirements for scientific publications.
A Simple Brushless Motor and Propeller Test Stand for Experiment from Home
Authors: Prasetiyo Erwan Eko 
Published: December 2021

Abstract
A brushless motor and propeller test stand is used to test brushless motors and propellers. This testing instrument is still only available in research laboratories. Students and researchers are unable to use laboratory facilities because of the Covid-19 epidemic, thus students must be able to do tests independently from home. Purchasing this testing instrument would be too expensive for students. It is essential to construct a brushless motor and propeller testing instrument at home using simple components that are easy to get on the marketplace. The design concept reads force data using a loadcell sensor and an HX711 driver, and current and voltage data with an INA 219 sensor. The brushless motor’s rotational speed is controlled by a potentiometer. Force, current, voltage, and power are all examples of test results data. A 16×2 LCD is used to show data immediately. Data is also transmitted via a USB connection to a computer device for storage or additional analysis. This study proposes a simple brushless motor and propeller test stand that can measure forces from 0 gf to 1000 gf with an error rate of 0.72 %. The power that can be read ranges from 0 mW to 18960 mW, with a 0.59 % error rate.
Design and Performance Analysis of 600 W On-Grid Solar Power Plant System based on Maximum Power Point Tracking (MPPT)
Authors: Yuniarti Nurhening , Wardhana Alex Sandria Jaya , Saputra Bagas Woro 
Published: December 2021

Abstract
This research aimed to make, test, and analyse the performance of 600 W on-grid solar power plant system based on maximum power point tracking (MPPT). This research used a developmental research method with the ADDIE model that was developed by Robert Maribe Branch. The results obtained data that the average power that was produced and distributed to the PLN grid reached 22.5 W with 95.67% efficiency from the grid-tie inverter usage.
Development Mobile Application Android Based for Sensor and Transducer
Authors: Hatmojo Y I , Azis S M 
Published: December 2021

Abstract
The aims of this research are: (1) producing a mobile applications android based for sensor and transducer field of study on vocational education; (2) know the quality of the product mobile applications android based for sensor and transducer field study on vocational education. The method used is the Software Development Life Cycle with the Waterfall model. The stages in Waterfall model are: (1) requirements definition; (2) system and software design; (3) implementation and unit testing; (4) integration and system testing; (5) operation and maintenance. The black box test results show the performance of Sensor application software can all function properly. While the results of the compatibility test show the application can run on various android systems (at least Android 4.2).
Information System for Disaster Mitigation Using Google Data Traffic
Authors: Jati Handaru , Mahali Muhammad Izzuddin , Agung Dewanto Satriyo 
Published: December 2021

Abstract
The Head of the Data Information Center and Public Relations of the National Disaster Management Agency predicts the potential for forest fires in 2018 will increase. The areas that are burned are border areas, both provincial/district/city borders because border areas are poorly supervised. This study aims to (1) Develop an Information System that can be used for Disaster Mitigation Using Google Data Traffic (2) Ensure that the developed Information System is suitable for use for Disaster Mitigation Using Google Data Traffic to obtain accurate traffic data. Google Data Traffic is a giant database used by the Google company to provide real-time traffic information through the Google Maps application. Google Maps uses multiple iterations of satellite cameras and uses Google Earth to map traffic including congestion information and the shortest possible path alternatives. The development method chosen is the Rational Unified Process (RUP). This research uses several methods in data collection including observation, interviews, and questionnaires. Interviews were conducted with prospective users of the application, namely firefighter drivers and people in disaster-prone areas. Questionnaires are used to provide a set of questions to respondents. In the determination test, the recall and precision values are calculated from the data generated by the developed system. While the function test uses descriptive data analysis techniques with the percentage feasibility formula. This research produces an application that can assist firefighters in carrying out their daily duties to be more effective and efficient and the test results on this application show that it is declared feasible in terms of efficiency, performance and compatibility.
Improving online learning interactivity with 3D virtual classroom models
Authors: Wardani R , Jati H , Nurkhamid  , Indrihapsari Y , Setialana P , Budiyanto A M , Ardiansyah M N 
Published: December 2021

Abstract
The world of education is experiencing a very significant impact of the Covid-19 pandemic. Online learning is a solution in overcoming learning limitations due to social distancing. Researchers developed a 3d virtual classroom using a Minecraft model to increase online learning interactivity. The 3 dimensional virtual classroom model design that has been developed has received respondents’ acceptance of 90.00% in the “Very Eligible” category. Testing the 3 virtual classroom features feature got a percentage of 90.83% with the “Very Eligible” category to produce a sense of presence. In the interactivity test, character interaction is 89.17% in the “Very Eligible” category. The effectiveness of online learning continuity using the 3D virtual classroom model tested gets 89.17% with the “Very Eligible” category. In addition, the test uses an average score of SUS (System Usability Scale) of 73.67, so it can be concluded that the 3D virtual classroom model is “acceptable” as an online learning medium.
Evaluating UI in Digital Skills Training: Human Centered-Design approach from UI Sanbercode Bootcamp
Authors: Fiducia  , Suprapto  
Published: December 2021

Abstract
Sanbercode is a digital skill training program, which can be studied by various classes of training. In the Covid-19 pandemic, much is felt: health, economics, to learning activities. These conditions require learning activities to be carried out at home. The purpose of this training is to enhance a person’s digital abilities or digital skilss. Sanbercode training is done online the web that is easy to access, it is hoped can take place more interactive, real, and fun. The approach applied to UI involves human centered-design. Found eight issues on the features consistent with human centered-design and conducted heuristic evaluations by evaluators. The results show a decline in the number following improvement solutions.
Item Selection on The Moodle-Based Computerized Adaptive Test
Authors: Haryanto  , Neng-Shu Y , Hadi S , Ali M , Husna AF , Wardhana ASJ 
Published: December 2021

Abstract
In this industrial era, all areas of life have been entered. There are five central issues that support performance, namely numerical physical devices, production tools, programs, interfaces, and networks. The Modular Object-Oriented Dynamic Learning Environment (Moodle) in order to support Industrial technology has been equipped with adaptive test facilities. Adaptive Moodle can be used to organize a communicative and interactive test process because of the communication features (chat, messaging, or forum). In addition, Adaptive Moodle can be used to administer online tests. Adaptive tests are tests whose quiz presentations will adjust to the user’s abilities. The results of the research that has been carried out regarding the selection of items on the Moodle-based computerized adaptive test (CAT) were obtained: (1) The Moodle adaptive test worked successfully in accordance with the research objectives, (2) Based on user responses, the selection of items on the Moodle adaptive test items had worked well for the exam, (3) The Moodle adaptive test can run according to its function, namely adaptive to the user’s ability.
IoT Enabled Ventilator Monitoring System for Covid-19 Patients
Authors: Mashoedah  , Rochayati Umi , Hidayatulloh Indra , Sony Arya , Ernawan Ferda , Fardiansyah  , Nuryanto Apri 
Published: December 2021

Abstract
The use of the IoT protocol on medical equipment is expected to provide protection for medical personnel in dealing with Covid-19 patients, especially when medical personnel are monitoring and setting up an equipment. This study aims to (1) produce a monitoring and control system for a breathing apparatus (Ventilator) based on the Internet of Thing (IoT), (2) test the ventilator control function, (3) test the data transmission function with the IoT protocol. The method used is Define, Design, Develop, and Disseminate (4D). Data collection is done through (1) Testing and Observation (2) Limited field test. This research produces a control and monitoring system for mechanical ventilators. The mechanical ventilator consists of a gripper motion mechanism driven by a dc motor. The movement of the gripper creates pressure and releases pressure on the ambu bag. The depth of pressure exerted by the gripper is measured as the volume and pressure of the air delivered to the lungs. The rate of pressure exerted is measured as the velocity of air flowing into the lungs.
Development of Android-based Mobile Application “Cyber Gen” for Genetic Counselling Implementation among Thalassemia Patients
Authors: Setiawan Henri , Setiawan Doni , Suhanda  , Mustopa Acep Hidayatul 
Published: December 2021

Abstract
Thalassemia is a genetic disease that causes various physical and psychosocial problems. Patients will experience psychosocial and emotional disorders in the form of feelings of depression, anxiety and other problems. Nurses as counselors need to provide genetic counseling interventions as a strategy to overcome these problems through information technology media such as android-based mobile applications. Android-based information technology is the most common and easy-to-use medium for nurses to provide health services such as genetic counseling. This research method used Research and Development design which aimed to design, produce and test the validity of the products that have been produced. The research phase used a qualitative approach to find out the problems and needs of the android application for the implementation of genetic counseling. Furthermore, the system development stage used the FAST (Framework for Application of Systems Technology) method which consists of preliminary investigation, problem analysis, requirements analysis, decision analysis, system design and construction. Testing of the Android-based Cyber Gene mobile application for the implementation of genetic counseling in thalassemia patients was carried out by testing all existing menus using secondary data. The result of this research is the Android-based Mobile Application “Cyber Gene” for Genetic Counseling Implementation among Thalassemia Patients. Nurses, thalassemia patients, and their caregivers can use this application for the comprehensive genetic counseling intervention process with instant messaging through the Live Consultation menu based on the predetermined procedure. Testing the system installed on android version 1.1 with the result that all menus and submenus on the system can be accessed and work well. Therefore, the Cyber Gene application can be used for the implementation of genetic counseling in thalassemia patients, both in hospitals and other health facilities.
Performance of Trainers kits for Industrial Automation Based on Programmable Logic Controllers
Authors: Sukir  , Sa’adilah  , Hartoyo  , Sunaryo  , Saifullizam B. P. 
Published: December 2021

AbstractThe objectives of this study include: (1) get results; and (2) know the performance of trainer kits for industrial automation based on Programmable Logic Controllers (PLC). The type of research is research and development that refers to the ADDIE model according to Robert Maribe Branch. Research steps include: Analyze, Design, Develop, Implement, and Evaluate. Data obtained through observation, interviews, and questionnaires, using instruments in the form of observation sheets, interview guidelines, and questionnaires. Data were analysed descriptively. The results showed that: (1) A PLC-based industrial automation trainer kit has been developed in the form of simulation of drilling objects, spraying paint on objects, applying stamps, and moving objects manually and automatically; and (2) PLC-based industrial automation trainer kit products have good performance, which is shown that 100% of the important components can work properly, and all job descriptions (100%) of the trainer kits can work as their function.