bluuebunny/crossref_metadata_2025_split huggingface dataset:
Saving of Using Electrical Energy of Induction Motor Through Regulations of Minimum Operating Voltage
Authors: Liklikwatil Yakob , Syafruddin  , Agustina Ellisa , Lestari Ninik Sri , Herawati YS , Mahardika Andrew Ghea , Afiyah Salamatul 
Published: June 2021

Abstract
Many devices use an induction-type electric motor as the prime mover, such as an electric drilling machine, cutting machine, cement mixer/sand, and various kinds of machinery contained in industrial textiles, automotive industry, and others. The use of machines is closely related to the application of electric motors that will essentially consume electricity vary depending upon the size of the motors that. And generally, this equipment always operates at a nominal price of electrical voltage or full voltage of 220 volts for example per phase or 380-volt three-phase. In this condition, when the motor is not fully loaded suppose half of its full load, it would be a waste of electrical energy consumption, especially if the motor is not given mechanical load on its axis. Therefore, this paper gives a little solution in saving electrical energy consumption of the motor. Two important things are studied in this paper regarding the working arrangements, namely the motor on the state of the start and on the state of the running.
Van Hiele Levels: Errors in Solving Geometry Problems from Mathematical Disposition
Authors: Miatun Asih , Khusna Hikmatul , Slamet  
Published: June 2021

Abstract
The purpose of this study is to analyze student errors based on van Hiele’s level of understanding in solving geometric problems in terms of mathematical dispositions. This research is considered important as it can reveal mistakes often made by students based on van hiele levels. There are 5 levels contained in van hiele levels, namely level I-visualization, level II-analysis, level III-ordering, level IV-deduction, and level V-rigor. This research is a qualitative descriptive study. Subjects in this study were selected based on high, medium, low mathematical disposition abilities. This research shows that students with high mathematical disposition in solving geometric problems reach level IV-deduction. Students with moderate dispositions are able to reach level II-analysis and make mistakes at level III-ordering. Furthermore, students with low mathematical disposition only reach level I-visualization and make errors at level II-analysis.
Validity and Reliability Analysis of Algebraic Reasoning Test Instrument
Authors: Faradillah Ayu , Jusra Hella , Pradipta Trisna Roy 
Published: June 2021

AbstractThis study aims to analyze the validity and reliability of the algebraic reasoning question instrument. The total number of questions in this study were 8 questions which were done by 107 junior high school students in Indonesia. Based on the results of the analysis using the Rasch model, it was found that the instrument had Cronbach’s alpha (KR-20) in the medium category, the item reliability was excellent, and the person reliability was in the low category. This shows that the instrument is a very reliable instrument for assessing students’ algebraic reasoning but students were unable to solve them well. Meanwhile, the results of the validity found that Q8 was not the fit criteria for MNSQ Outfit, ZSTD Outfit, and PTMEA-CORR. As for person fit, only six students showed a misfit, which indicated that other students gave a meaningful response to Rasch’s analysis.
ICT Competence, Organizational Culture, Motivation, and Task Performance among the Employees of One Polytechnic University Branch
Authors: Avila Ernie C. , Cabrera Honorato I. 
Published: June 2021

Abstract
This study identified the ICT Competence, Organizational Culture, Motivation, and Task Performance among the Employees of Polytechnic University of the Philippines-Ragay, Camarines Sur Branch. Descriptive-survey was conducted for the 38 employees of the said university branch for the Second Semester of Academic Year 2019-2020. It was revealed that The employees’ competence in using ICT resources in a higher education institution is within Skillful to Much Skillful levels. It Often Observed the different components of Organizational Culture as they are Often Motivated and Often performed in their organization. Considering that the ICT competence of the employees is affected by the availability of the ICT resources in the institution and their exposure to the ICT resources. It is also recommended for the higher authority of the university and the Commission on Higher Education to prioritize the procurement of relevant resources, equipment, and facilities related to ICT integration in Higher Education Institutions, and training and skills empowerment of staff of the organization should be regularly conducted.
The Use of Electronic Learning Aid (Elena); It’s Impact on Student Satisfaction
Authors: Nurkhin Ahmad , Aeni Ida Nur , Baswara Satsya Yoga , Widiatami Anna Kania , Harsono  
Published: June 2021

Abstract
This research aims to describe the use of Electronic Learning Aid (ELENA) at the Universitas Negeri Semarang (UNNES) as an online learning platform during the Covid-19 pandemic. It also explains the effect of using ELENA on the students’ satisfaction. The research objects are the lecturers and the students of the Economic Education study program, Faculty of Economics of UNNES. The data are collected using documentation and questionnaire methods. The data are then analyzed using descriptive statistics. The results show that the lecturers have made good use of ELENA as an online learning platform. They can operate some features available in ELENA (attendance, files, assignments, quizzes, links, labels, discussions, video conferencing) well. The students also think that their lecturers have sufficient competence in utilizing ELENA. Their satisfaction level is in a good category. However, they also suggest some other learning activities that the lecturers can conduct by utilizing other applications besides ELENA.
Augmented reality as a part of STEM lessons
Authors: Midak L Ya , Kravets I V , Kuzyshyn O V , Baziuk L V , Buzhdyhan Kh V , Pahomov Ju D 
Published: June 2021

AbstractModern teachers and the managers of educational establishments have big challenge – to organize the lectures and the study process so that the students are provided with the necessary skills and to meet their educational needs, as well as their parents’ expectations. An integrated lesson that is developed with a synthesis of information on different educational subjects stimulates the students’ analytic thinking, which in exchange boosts the integral perception of the reality. That is why STEM lessons are becoming more and more popular among the educators, as far as the specifics of this approach can really solve a lot of tasks. Modern IT-developments are an appropriate T – component during STEM lessons and while developing STEM projects. One of these up-to-date trends is called Augmented Reality (AR), which allows visualizing the study material and improves its reception and memorizing. The purpose of the research is development of a mobile app (on Android) for STEM lessons, designed for visualization of the chemical structure of organic, biologically active substances, which can be used by the teacher and students in order to carry out integrated lessons of biochemical area; revealing key specifics of using STEM technologies while studying natural sciences.
The use of MOOCs as additional tools for teaching NoSQL in blended and distance learning mode
Authors: Zinovieva I S , Artemchuk V O , Iatsyshyn Anna V , Romanenko Y O , Popov O O , Kovach V O , Taraduda D V , Iatsyshyn Andrii V 
Published: June 2021

AbstractToday there is a significant demand for improving the quality of the educational process in higher education institutions, in particular, through the improvement of principles and methods of teaching various sciences by enhancing the practical skills of students and graduate students. The implementation of this task is particularly difficult in the context of distance learning (for full-time and part-time) and blended learning. This study corresponds to the current direction, as it concerns the study of the possibilities and feasibility of using additional tools for teaching disciplines within NoSQL. Paper’s focus is on the justification of the use as an additional tool of a number of massive open online courses (MOOC) distance learning platforms, a comparative analysis of a number of platforms for their compliance with the established criteria. Examples of using MOOC MongoDB University within the discipline “Organization of NoSQL databases” are given. To confirm the facts of the expediency of using MOOC as an additional tool in blended learning and distance learning mode, the data of the survey of students are presented.
Teaching robotics to future teachers as part of education activities
Authors: Valko N V , Osadchyi V V 
Published: June 2021

AbstractOne of the most effective ways to implement STEM education in full secondary education is through research activities. It is implemented by performing certain projects. Professional activity of teachers of natural and mathematical disciplines in STEM education is aimed at the students’ mental, cognitive, and personal qualities formation and development. Their level determines the possibility of further mastering by students of a promising specialty STEM industry. It also involves the formation of the ability and willingness to solve complex problems, which is possible with the appropriate level of critical thinking, creativity, cognitive flexibility, teamwork, as well as the ability to implement research activities. In article determines the nature of the relationship between disciplines and the degree of integration. The place of project activity on robotics in school training is considered, describes the competencies that are formed as a result of such project activities. the possibility of teaching robotics to future teachers within the framework of existing curricula is also considered. The concept of STEM education has a broad interpretation: from a simple list of “exact” or “engineering” disciplines to inventive activity. In Ukraine, this area has become synonymous with scientific and research work: research and experiments. From this point of view, robotics is an effective means of developing STEM education. But this is a new tool and schools have a low level of interest in its study. Therefore, our article focuses on finding opportunities to implement the basics of robotics in education. The article formulated course requirements in accordance with the educational needs of the future teachers of science, mathematics and the level of technology development. The paper presents an example of project implementation in robotics, describes the stages of its implementation and achieved educational results.
Specific features of the use of augmented reality technologies in the process of the development of cognitive component of future professionals’ mental capacity
Authors: Osadchyi V V , Osadcha K P , Varina H B , Shevchenko S V , Bulakh I S 
Published: June 2021

AbstractWays of development and modernization of modern higher education are largely determined by the scientific and technological progress. The article is devoted to the current issue of the augmented reality technology use in professional education. The paper analyzes foreign and domestic experience of the use of augmented reality technologies as a means educational, research and project activities implementation. The author also describes the benefits of the augmented reality technologies use for the curricula design. Taking into account the reorganization of the educational process due to pandemic isolation, caused by COVID-19, the issue of the identification of AR technologies impact on the development of cognitive component of future specialists’ mental capacity is becoming extremely relevant especially in the conditions of adaptive and blended learning. The paper, in a structured way, describes the experience of introducing the augmented reality elements in the process of developing cognitive component of future professionals’ mental capacity. The ascertaining and formative stages of the empirical research were carried out during 2020 on the basis of Bogdan Khmelnytsky Melitopol State Pedagogical University. Relevant interdisciplinary research is a logical construct of cooperation between leading scientists of the Department of Psychology and the Department of Informatics and Cybernetics of Bogdan Khmelnytsky Melitopol State Pedagogical University. The structure of the study includes the main scientific developments in the context of the research work, performed at the expense of the General Fund of the state budget: “Adaptive system for individualization and personalization of professional training of future specialists in blended learning”. Based on certain psychological and pedagogical determinants of the AR technologies use for the development of cognitive component of the future specialists’ mental capacity, we have proposed the implementation of interactive technologies at three levels: competence-oriented, structural-cognitive, emotional-reflexive, on the example of doing the course “Introduction to Specialty (Psychology)” in the conditions of distance learning. According to the results of an interdisciplinary research, it was found out that students gained skills which are necessary for their adaptation to a new intellectual and educational environment. Due to positive qualitative and quantitative changes in the cognitive structure of personality there was an increase in the first-year students’ mental capacity in its main components (the level of attention stability and selectivity, short-term memory span and analytical thinking, level of development of special qualities necessary for mental capacity, formation of mental capacity culture).
Using interactive semantic networks as an augmented reality element in autonomous learning
Authors: Tarasenko R O , Amelina S M , Semerikov S O , Shynkaruk V D 
Published: June 2021

AbstractThis paper focuses on the using augmented reality elements in the educational process, in particular in autonomous learning. The possibility of using interactive semantic networks in learning foreign languages is considered. The technology of selection and structuring of specialised terminology on the basis of interactive semantic networks for their further use in the study of foreign languages and mastering automated translation systems has been developed and proposed. The criteria for creating and supplementing terminological databases with appropriate structuring of the domain terminology selected on the basis of interactive semantic networks have been defined, namely universality, structurability, convertibility, extensibility. The possibility of further use of terminology bases for foreign language learning using mobile applications, mastering Computer Aided Translation (CAT) systems, mastering Computer Aided Interpretation (CAI) are outlined. Based on the practical use of the developed technology in the process of autonomous training of translators, positive results have been concretised and areas for further activities in their technological training have been identified.
The cryogenics and xenon handling system for the PandaX-4T experiment
Authors: Zhao L. , Cui X. , Ma W. , Fan Y. , Giboni K. , Zhang T. , Liu J. , Ji X. 
Published: June 2021

Abstract
PandaX-4T, the new generation of the PandaX detector, is a xenon dual-phase detector with about six tons of liquid xenon as target for dark matter search. A cryogenics and xenon handling system is designed to liquify and purify this large detector. In this paper, the results on the commission of the cryogenics and gas handling system are reported. The maximum cooling power of ∼ 580 W at 178 K with three cooperating coldheads has been achieved. The filling rate with an assisted liquid nitrogen cooling can reach ∼ 700 kg/day. The average rate of recuperation by liquid nitrogen is around 440 kg/day. The maximum total purification speed of two circulation loops is up to ∼ 155 slpm. Each loop is using a large heat exchanger with a measured heat exchange efficiency of ∼ 97.5±0.5%.
Manufacturing, assembling and plasma cleaning of new SANAEM RFQ
Authors: Cosgun E. , Yasatekin B. , Kilic I. , Bolukdemir A.S. , Olgac Y. , Cicek E. , Yesilbag B. , Alacakir A. 
Published: June 2021

Abstract
A new 1.2 m radio frequency quadrupole (RFQ) accelerator cavity, made of oxygen-free copper (OFC) and capable of accelerating protons up to 1.3 MeV energy, is recently manufactured for the Turkish Atomic Energy Authority (TAEA), based on the motivation of establishing a proton beamline with indigenous capabilities. In the present article, the manufacturing and assembling procedures related to the new RFQ copper vanes, especially the novelties applied to a vane type RFQ accelerator cavity, namely plasma cleaning of vane surfaces and utilization of indium wire in vacuum sealing, will be described. The preliminary results, the vacuum level and quality factor, suggest that these applications indicate promising options for future accelerator cavity production.
Individual Selection Soybean (Glycine max L.) The Genotype of Cross Argomulyo and Tanggamus Based on Character of Yield Component
Authors: Sihaloho Arvita Netti , Sitinjak Wahyunita , Purba Tioner 
Published: June 2021

Abstract
Selection is one of plant breeding techniques to obtain a desired character. The objective of this research was to determine information about the trait variance in F3 lines in terms of yield and yield components, knowing character could be improved through selection to obtain high yield lines. This study was conducted on june until august 2020 in the village Karang Bangun Rambung Merah Kecamatan Pematangsiantar, kabupaten Simalungun 500-550 with an elevation place, use augmented design. 20 × 30 cm plant distance, data observed for each individual plant, and done to find genetic variance, environment variance, phenotif variance, GCV, broad-sense heritability and Coefficient correlation. The result show that the value of heritability all character was moderate until high except the days of harvest was low. The value of GCV was narrow to the days to flowering and harvest, while other character value of the GCV was moderate until broad. Coefficient correlation indicated that Seed weight per plant was positively and significantly correlated with all studied traits except the days to flowering was negative and non-significant. Based on high heritability and broad GCV, selection process on seed weight per plant so 10 selected lines with highest seed weight.
Mapping Climate Classification of Oldeman in Agricultural Resources Management in South Tapanuli District
Authors: Harahap Imelda Sari , Matondang Irwan Zulfikri , Suryanto  , Indah Erti Kumala , Fitri Irmalia 
Published: June 2021

Abstract
The Oldeman classification system is very useful in the classification of agricultural land for food crops in Indonesia using the element of rainfall. The criteria are based on the calculation of wet months (BB) and dry months (BK), respectively, with the limits taking into account the chance of rain, effective rain and water requirements for plants. With the Oldeman climate classification, a cropping pattern system can be determined in an area. Based on the research results obtained 4 types of climate in the South Tapanuli region, namely: D1, D2, E1, and E2. The wettest climate type in the Sipirok region is climate type D1 with 4-5 wet months and ,2 dry months. And those that are suitable for planting short-lived rice are 3 (three) harvests or short-lived rice is 2 (two) harvests and secondary crops 1 (sastu) harvests. The driest climate types in the East Angkola region are climate types E1 and E2 with the number of wet months ,3 and the number of dry months 6-7. What is suitable for planting short-lived lowland rice is 1 (one) harvest and secondary crops 2 (two) times, the second special harvest falls in the dry season. The topographical condition of an area greatly influences the climatic conditions of the area. With a good climate classification and suitable for rice plants without irrigation assistance, the climate types are D1 and D2, namely in Sipirok District, West Angkola District and a Small Part of Saipar Dolok Hole and Batang Angkola Districts. Meanwhile, the East Angkola sub-district can be planted with rice with the help of irrigation, especially in the dry season.
Dormancy Breaking of Kimalaka Seeds (Phyllanthus emblica L.) at Various Concentrations of Sulfuric Acid
Authors: Adelina Rasmita , Hanafiah Nasution Muhammad Nizar , Harahap Darmadi Erwin , Nasution Jihadul Fadhli 
Published: June 2021

Abstract
The kimalaka plant (Phyllanthus emblica L.), known as „balakka”, by the people of North Sumatra, with the English translation is called indian gooseberry [1] and is called “popok melaka” in Malaysia [2]. The kimalaka plant is a commodity with great potential to be developed, one of which is due to the high content of vitamin C so that the kimalaka plant has many health benefits. Especially in the Padangsidimpuan area and its surroundings, this kimalaka plant is more widely known as a mixture of traditional cooking spices, with the name of the food being called „holat”.The widespread conversion of land into smallholder plantations with commodities such as rubber and oil palm is one of the threats to the extinction of the kimalaka plant. Lack of information about the kimalaka plant is also the cause of the underdevelopment of this kimalaka cultivation. Kimalaka seed with a very hard seed coat is a factor causing kimalaka seed dormancy. So before planting, there must be a treatment to break dormancy. This study aims to see and observe the effect of various sulfuric acid concentrations to break the dormancy of kimalaka seeds. This study used a non-factorial randomized block design (RBD) with one factor, namely the concentration of sulfuric acid with 4 levels, namely: A0 = Control, A1 = 4%, A2 = 6%, A3 = 8%. The observation variables were the percentage of germination (%), plant height (cm), and the number of leaves. Based on the results of this study, it was found that the treatment of sulfuric acid concentration was significantly different in all observation variables. The treatment that gave the best effect on all observation parameters was sulfuric acid at a concentration of 8%. In future research, it is suggested to increase the sulfuric acid concentration.
The Development of a Software Tool for Improvement Tracking System Using Dynamic Systems Development Methodology
Authors: Imamuddin Ashari , Sobarnas Mohamand Anas , Iskandar  
Published: June 2021

Abstract
The present study aims to develop a software tool for improvement tracking system for a waste management company in Indonesia. The tool was built as a system to track the improvement process of following up findings of the validation and verification process in the management system of the company. The company also obtains a few audits by the authorities, certification bodies, and its customers. The company applied several management systems in assuring all persons in charges are responsible for following up on the improvement findings. The outcome of the study is a proven software tool that has supported the top management in making decisions in terms of the improvement processes. The system automatically reports to the top management when the findings of each individual responsible person have not been executed yet as well as the top management can take direct decisions and actions to the current status of their improvements processes.