bluuebunny/crossref_metadata_2025_split huggingface dataset:
Internet of Things Based Motorcycle Monitoring Application Development
Authors: Lestari Ninik Sri , Herawati  , Mahardika Andrew Ghea , Rachman Taufik , Suhendi Hendi , Mutaqin Asep Hilmi , Hidayat Rahmad 
Published: June 2021

Abstract
A common problem that occurs very often in society is motorcycle theft. The rampant cases of motorcycle theft, which are even carried out in the parking lot of homes, need to find the right solution. One solution to handling motorcycle theft cases and securing motorbikes is by installing smart vehicle technology. The purpose of this research is to design a motorcycle safety system based on the Internet of Things. The design uses the Arduino Mega microcontroller, the ESP8266 wifi module, a fingerprint sensor, and the Blynk application on a smartphone. Hardware design with fingerprint and microcontroller integration then designing IoT-based applications with the ESP8266 and combining a security system with notifications to smartphones. Application this can help to turn on and off the engine of two-wheeled motorized vehicles remotely, can assist users in supervising or monitoring two-wheeled motorized vehicles.
The Durability of Composite Cement Paste Using Diatomaceous Earth against Sodium Sulfate Attack
Authors: Nurmasyitah  , Hasan Muttaqin , Saidi Taufiq 
Published: June 2021

Abstract
In this study, the durability against sodium sulfate attack test of composite cement paste using diatomaceous earth was carried out. Diatomaceous earth was calcined in several processes, in order to obtain micro-particles with a more dominant silica content which was used as a mineral material to produce composite cement. The proportion of diatomaceous earth in composite cement was 0%, 10%, 20% and 30% of total cement weight. The amount of water was determined, so that a composite cement paste with normal consistency was obtained. Composite cement paste was made by mixing all the constituent materials in a mixer. The specimens were made in accordance with ASTM standards, namely cubes with 50 mm sides with 9 specimens for each mixtures. The test was carried out by immersing the specimens in 10% sodium sulfate solution for one and two months then the visual changes, loss of mass and changes in compressive strength were observed. Composite cement paste that experienced smallest damage was composite cement paste with 10% and 20% diatomaceous earth. Mass loss was occurred only in the original Portland cement paste after two months immersion. The compressive strength of the composite cement paste experienced the least degradation at 20% diatomaceous earth content.
Improvement of Binary Frequency Shift Keying Modulation Performance
Authors: Hidayat Rahmad , Rushendra  , Agustina Ellisa , Afiyah Salamatul , Herdiana Yudi , Mahardika Andrew Ghea , Lestari Ninik Sri 
Published: June 2021

Abstract
M-ary frequency shift keying (FSK) is a low-power, low-data-rate modulation scheme currently used by manufacturers of data transmission equipment. Inter symbol interference (ISI) occurs in all communication systems. To analyze the effect of the raised cosine filter and adaptive equalizer on reducing the ISI, the binary FSK (BFSK) modulation technique has been studied extensively in this research. In this study, we have selected the square root raised cosine filter and the sign least mean square (LMS) equalizer. The bit error rate (BER) performance of the 2-FSK system with the additive white Gaussian noise (AWGN) channel is evaluated and analyzed with the help of Simulink. The best BER value of 1.7e-03 was obtained in this study.
Dc Battery Optimization in 275 Kv Main Gardu to Improve The Reliability of the Control System
Authors: Birje Herman , Hasan Syafruddin , Pinem Maksum 
Published: June 2021

Abstract
This research focuses on optimizing the DC 110 V battery at the 275 KV substation in Pijorkoling Padangsidempuan, North Sumatra. By measuring the inverter connected to the battery side and the Human Machine Interface, it is found that the value of harmonic currents is in several orders, but because harmonic currents are in the 5th order, 11th order, 15th order, the author makes the LCL Passive Filter. on the output side of the inverter and Human Machine Interface in the hope of reducing the harmonic current. To make it easier for the author in the research, it was carried out using a mathlab-simulink simulation. The result is that the THDi inverter on the inverter decreases from 110.9% to 49.57% or it is reduced by 223.72%.
Smart Automatic Petrol Pump System Based on RFID and ESP8266
Authors: Baqir Zahra’a M. , Motlak Hassan. J. 
Published: June 2021

Abstract
Traditional methods of monitoring petrol pump in gas station by humans on site are unable to meet the expectations for efficiency, accuracy and cost. Setting up an RFID and ESP8266 based petrol station monitoring system is a good approach to improve monitoring efficiency and to improve management efficiency in stations. Although there are still some problems to be solved for RFID and WIFI technologies, their unique features still make the monitoring system based on them a promising system. The architecture of the RFID as prepaid system and ESP8266 as monitoring system in petrol station is presented in this paper.
Voltage Regulation and Power Consumption Analysis of LED Driver using Switched String Method
Authors: Defi Sry , Samman Faizal Arya , Sadjad Rhiza S. 
Published: June 2021

Abstract
This paper discusses an AC/DC buck converter-based LED driver to reduce the voltage from 230VAC to 12VDC with a few strings of LEDs. This led driver is designed with a cost-effective circuit because using a single inductor, single inductor multiple-output (SIMO) can reduce the number of components, control the current independently and precisely on each LED string simultaneously, compared to using an inductor on each LED string. To control current and voltage, PWM (Pulse Width Modulation) control is used as a MOSFET signal switch. This MOSFET calculates the duty cycle so that the desired DC output according to the LED specifications can be realized. The circuit was analyzed using PSpice software. The test based on the duty cycle shows that the highest output voltage is obtained with a work cycle of 10% resulting in a voltage of 5.9V and a current of 32.4mA. Meanwhile, achieving the output value based on the led specification with a voltage of 12V and a maximum current of 31mA has been achieved at a duty cycle of 4.7%. This AC/DC buck converter circuit not only lowers the voltage but can overcome dimming and provide a uniform light output on each LED with an output voltage of 12VDC. The experimental results show that this AC/DC buck converter circuit has been tested and can be applied to the Led driver system.
Synthesis of Al/Fe Pillared Bentonite: Characterisation and Analysis of Thermodynamic Parameter
Authors: Said M , Saputri L I , Purwaningrum W , Riyanti F , Hariani P L 
Published: June 2021

Abstract
The modification of bentonite by pillarization process of Al/Fe metal oxide has been carried with metal oxide with ratios 1:2 and 2:1. The product was characterized by FT-IR, XRD and pHpzc analysis. Thus, this optimal pillarization product was used as an adsorbent of Congo red and Direct green dyestuffs. The FTIR characterization does not show optimum pillarization processes for any metal oxide ratios, while the XRD analysis shows the optimum pillarization processes at ratio 2:1 i.e. 17.1 Å. In addition, the optimum pH for absorption of Congo red took place at 2 while for Direct green at 3. At 70oC, the highest adsorption capacity (Qe) reached 57.34 and 72.06 mol/g; and the highest adsorption energy (E) was found 3.23 kJ/mol and 4.14 kJ/mol for Direct green for Congo red and Direct green, respectively. Vice versa, the enthalpy (ΔH) and entropy (ΔS) values decreased as the increase of both Congo red and Direct green concentration.
An Assessment of Teachers’ Readiness for Online Teaching
Authors: Suryanti Sri , Sutaji Deni , Nusantara Toto , Subanji  
Published: June 2021

Abstract
Teachers in online learning play an important role in success or failure in the online learning system. Their ability to design learning content in LMS affects the quality of information presented, the interaction in learning and student satisfaction during lectures. This study aims to check the readiness of teachers at the Universitas Muhammadiyah Gresik in online learning by using two measuring instruments, namely the results of monitoring the completeness of the content of courses in LMS as well as a survey conducted on 209 teachers using a questionnaire of teacher confidence in TPACK consisting of 11 items. The response of 209 lecturers was analyzed descriptively from data obtained from online surveys, while rubric completeness of courses using the category of completeness with a scale of 1-5. The assessment results of the completeness of the content of the courses showed that 57% of courses had complete content, 14% of courses had fairly complete content, and 29% of courses had incomplete content. While the survey results on teacher readiness show TPK component are believed to be the essential component in online teaching readiness.
Identifying Students’ Mathematical Argumentation Competence in Solving Cubes and Pyramid Problems
Authors: Tristanti Lia Budi , Nusantara Toto 
Published: June 2021

Abstract
This article aimed to describe students’ mathematical argumentation competence in solving cubes and pyramid problems. The kind of problem to be solved in this study referred to proving. The students’ mathematical arguments were thoroughly analyzed using Toulmin scheme. It used qualitative method. The data was collected by asking 40 students to do argumentation task by thinking out loud strategy. The subject’s works would be compared to the problem structure based on the Toulmin scheme. From data analysis, it found three kinds of mathematical arguments the students had made to solve cubes and pyramid problems. Those three mathematical arguments were inductive-incomplete, inductive-complete, and deductive arguments.
Determining Supply Chain Network Using Location, Invetory, Routing Problem (LIRP) Approaches
Authors: Meutia Sri , Anshar Khairul , Subhan  
Published: June 2021

Abstract
This research is motivated by the large number of complaints of the poor and micro-scale industries that have to buy 3 kg of LPG gas above the highest retail price set by the Aceh Government, Rp. 18,000. There are several cases where people have been forced to buy at almost double the price (> Rp. 30,000). One of the main causes of this spike is the unavailability. To ensure the availability of these goods, it is deemed necessary to establish a goods management policy (logistics system) which includes decisions on the allocation of goods distribution, inventory policies of all entities in the system being observed, and their delivery routes. With the formulation of an optimal goods management policy, it is considered to ensure the availability of goods which will lead to an appropriate selling price and, no less important, to reduce the management cost which has the effect of reducing the need for subsidies that must be issued by the government. The model used as a problem solving tool for the integration model of determining the location, inventory policy, and allocation delivery routes is classified as a Location-Inventory-Routing Problem (LIRP). The LIRP model is then performed optimization to determine which agents should operate, inventory policies at agents and bases, and delivery routes. From the model developed, it was concluded that only one operating agent was needed to supply 3 kg LPG gas, which served all bases operating in six villages in Muara Dua District, Lhokseumawe City.
Readability Analysis of College Student’s Written Outputs using Grammarly Premium and Flesch Kincaide Tools
Authors: Avila Ernie C. , Lavadia Mary Kris S. , Sagun Randy D. , Miraña Ana E. 
Published: June 2021

Abstract
This descriptive study determined the Readability Analysis of College Student’s Written Outputs using Grammarly Premium and Flesch Kincaide Tools for the First Semester of Academic Year 2020-2021. This involved the documentary analysis of the essays of the 290 freshmen students enrolled in six courses in Polytechnic University of the Philippines-Ragay, Camarines Sur Branch. It revealed that using the said two programs both revealed that the writing ability of the participants are not within the expected level of a university student, but for Grades 8 to 11 only; thus, it is recommended that Senior High School English teachers should use innovative strategies in teaching writing academic and non-academic texts. The content and language editing strategies to hone the student’s writing composition competency can be measured by appropriate college admission tests intended for writing readability assessment only.
The Mobile Learning Implementation for Physics Lesson in Indonesia: A Narrative Review
Authors: Sulisworo D , Kusumaningtyas D A , Prasetyo E , Fitriah  , Fitrianawati M , Erviana V Y 
Published: June 2021

Abstract
Indonesia is an archipelago with a vast landscape. Equal access to education has been an important issue in improving the quality of education to support human resource provision. This study is a narrative review study based on reflections during conducting multi-year research from 2015 to 2020 funded by MOEC. During the research period, authors arranged socialization, training, mentoring, and measuring the impact of mobile learning implementation in rural and remote areas, especially in eastern Indonesia. The results of this study indicate that there is good potential for mobile learning to support equitable access to education. Governments need to consider several essential aspects so mobile learning can work well. The aspects are the readiness of infrastructure and the readiness of technology acceptance by educational decision-makers and principals. The results of this study, as a whole, can be used as a basis for developing various educational policies in the disadvantaged region.
Technology-Enhanced Learning Research In Higher Education: A recommendation System For creating Courses Using the Management Systems in the E-Learning 5.0
Authors: Dewi Putri , Elihami Elihami , Usman Muh Ilham , Asbar Asbar , Saidang Saidang 
Published: June 2021

Abstract
The purpose of this research was technology-enhanced research in higher education. Design-based research for creating courses using the management system in the E-Learning 5.0 has proven its promise as a tool useful for both research and design of technology-enhanced learning environments over the last decade (TELEs). In this article, we characterize and explain design-based research characteristics, outline the relevance of design-based research in the creation of TELEs, suggest principles for applying design-based research with TELEs, and address potential challenges in using this approach. This inaugural special issue of Studies in Technology Enhanced Learning focuses on ‘theory,’ a controversial subject. While theory has been criticized for being vague or alienating at times, it is safe to conclude that theory has never been as profoundly rooted in Technology Enhanced Learning (TEL) science as it has in many other fields of scholarship.
The Use of E-learning as an Online Based Arabic Learning Media for Students
Authors: Ritonga Apri Wardana , Zulfida Sri , Ritonga Mahyudin , Ardinal Eva , Susanti Dini 
Published: June 2021

AbstractThe distance learning system requires schools and teachers to be able to take advantage of the online platform as a medium to support the learning process. This study aims to analyze the use of E-learning as a medium for learning Arabic in Ma’had SMA Islam Sabilillah Malang. This research uses a qualitative approach with a case study method. Data were collected through observation, interviews and documentation study. The data analysis technique uses Milles and Huberman’s theory, namely reducing, presenting and verifying data. The results of this study indicate that; 1) the use of E-learning causes a transformation of learning from a collaborative approach to an individual instructional approach in Arabic learning, 2) Arabic learning patterns using E-learning change student dependence on teachers to become dependent on learning instructions contained in E-learning. The findings of this study illustrate that learning Arabic using E-learning will be meaningful for students if the subject matter is well designed and clear.
The Effectiveness of Scrabble Game Media in Improving Learning Outcomes
Authors: Khaira Mutia , Ritonga Mahyudin , Halim Syaflin 
Published: June 2021

Abstract
In this digital era, technology-based learning media are attractive to students because it improves their learning outcomes. Therefore, this study aims to determine the improvement in learning outcomes for Arabic vocabulary using scrabble game media. It was designed using a quasi-experiment with a sample of 81 people. Furthermore, the data collection technique was conducted through pre-test and post-test, as well as analyzed by SPSS 26. The results showed that students’ Arabic vocabulary ability is improved by using scrabble game media. This conclusion followed the results of the Mann-Whitney analysis and the N-gain test, where the highest score was in the experimental class after treatment.
Development of the online course for training master students majoring in mathematics
Authors: Vlasenko K V , Lovianova I V , Rovenska O G , Armash T S , Achkan V V 
Published: June 2021

AbstractThis article considers the issue of implementing a model of blended learning to prepare master students majoring in Mathematics (speciality code in Ukrainian educational system “014 Secondary Education. Mathematics”). The research analyses the existing developments of the issue about the use of blended learning while training would-be mathematics teachers. The researchers determined and explained the stages of work on developing the online course “Methods for Teaching Mathematics to Students at Technical Universities”, that is used when students learn methodological subjects of the curriculum. The research describes the development of the theoretical online course model and methodological recommendations on the learning materials and preparing papers for the course. The article offers recommendations related to the course structure. The course developers defined the usability criteria of the educational platforms, determined the stages of course users’ activity, their content, and organization. The research describes the areas of online course activity management, the course tutors’ and moderators’ teamwork is defined as the main condition of its development and support. In order to prove the efficiency of implementing blended learning of the methodological subjects, an experiment was carried out during the assistant practice in technical universities that master students of the specialization “Mathematics” had. The results allowed confirming the efficiency of students’ practical training during blended learning of the methodological subjects that in its turn encouraged the improvement of the assistant practice results.
Some applications of the GRAN1 to analyze two-dimensional continuous probability distributions
Authors: Zhaldak M I , Franchuk N P 
Published: June 2021

AbstractThe article considers the use of GRAN1 software in the analysis of two-dimensional continuous probability distributions. The learning process can be provided by freely distributable software, through the use of cloud technologies, in particular software from the GRAN package. However, the use of any technology in the educational process, including modern information and communication technologies, as well as the content of education, must be pedagogically balanced, which will avoid any negative consequences for the formation of the future member of society, his mental and physical development. Attention is drawn to the fact that children are increasingly looking for entertainment, using mobile devices, sharing new products with their peers and spending time together, playing a variety of online games, and parents cannot control this process. At the same time, teachers conduct lessons using mobile devices to draw attention to the subject, they are teaching. In the process of using computer technology, students can form a special type of thinking, the so-called “clip consciousness”, which leads to fragmentary thinking and the irreversibility of changes in consciousness. Therefore, the problem of excessive use of mobile devices by children requires constant analysis and coverage. The article discusses some examples of using the GRAN1 software to solve problems in probability theory. Examples of approximate calculation of the value of the double integral are given. Tables of values of the corresponding integrals are described. The use of modern information and communication technologies during mathematics lessons is considered.
A competency-based approach to the systematization of mathematical problems in a specialized school
Authors: Vlasenko K V , Lovianova I V , Armash T S , Sitak I V , Kovalenko D A 
Published: June 2021

AbstractThe issue of searching for new methodological approaches to the systematization that will encourage the increase of students motivation to learn mathematics under the competency-based approach is considered in this article. The research analyzes the existing works on the increase in students motivation to learn Mathematics, in particular, the use of cross-curricular connections while forming students competency. Competency-based problems, systematized according to the topic of the 10th grade Functions, their features and graphics, were determined as the tools to measure students competency and a method to form their motivation to learn mathematics. The use of such methods as the initial research and information gathering, systematization and structural analysis of the problems, data processing allowed the authors of the article to systematize the problems for school subjects of the 10th grade that demonstrate cross-curricular connections of Mathematics with other learning subjects and allow showing the advantages of the mathematical modeling in researching real processes. The research shows the realization of cross-curricular connections in time and such connections as parallel learning, perspective connections, use of the mathematical modeling method are shown. An experiment was held in order to prove the efficiency of implementing a system of the problems to demonstrate the use of the function in different tasks of natural subjects. The results proved that the implemented system of problems considerably influences the increase in students motivation to learn mathematics.
Hyperbolic geometry in general education: comprehending the incomprehensible
Authors: Lénárt I 
Published: June 2021

Abstract
This paper is a self-independent continuation of my article on Comparative geometry between the plane and the sphere that was presented at the previous edition of ICon-MaSTEd Conference 2020. Below I discuss the possibility of adding a third geometry to the plane and the sphere, namely, the hyperbolic geometry on the hemisphere. I describe my own path to the subject, then the content of the syllabus which contains basic concepts of hyperbolic geometry for future preschool, elementary school, and secondary school teachers. Finally, I give reasons to introduce the subject into primary and secondary schools, not just for the “talented” but also for the “average” students.