bluuebunny/crossref_metadata_2025_split huggingface dataset:
A development of multiple representation-based integrative science learning set to improve scientific literacy in the concept of heat
Authors: Odja A H 
Published: July 2021

Abstract
This research has been conducted to, first, develop multiple representation-based integrative science learning set which encompassed lesson plan, student worksheet, teaching material (student book), scientific literacy test, and conceptual understanding; and second, find out impact of development of multiple representation-based integrative science learning set on scientific literacy skill and conceptual understanding of Natural Science. It was an Education Research and Development (R & D) that referred to 4-D method. After went through research stages, a product was created in the form of learning set and comprised Lesson Plan, Student Worksheet, Student Book, and Scientific Literacy Test and Conceptual Understanding of Heat (Natural Science). The learning set has been assessed by expert in his/her field and user in the field. Result of validation revealed that the generated learning set was categorized as good while result of experiment for the learning set found an improvement in students’ scientific literacy skill and conceptual understanding of Natural Science. The previous results were supported by value of gain for 0,42 and 0,53, which were included in medium category.
Mathematical problem solving ability based on self-efficacy in ICT-assisted preprospec learning model
Authors: Dewi N R , Mulyono M , Ardiansyah A S 
Published: July 2021

Abstract
Mathematical problems solving ability is the main goal of learning mathematics. In addition, students in Mathematics Education study program need one affective ability called self-efficacy. Self-efficacy enables students to have efficacy through the experiences they have. If students have high self-efficacy, they can confidently carry out steps to solve the given mathematical problems. One learning model that can facilitate the enhancement of these two abilities is ICT-Assisted Preprospec Learning (I-Pre) Model. Thus, the main purpose of this research was to analyze comprehensively mathematical problem-solving ability based on self-efficacy in I-Pre Learning model. To do so, it used quantitative methods with all students in the mathematics department of one of universities in Central Java, Indonesia as the population. Moreover, the sample was randomly taken from groups of students in the Study Program of Mathematics Education who enrolled in Integral Calculus course, while their data were collected using two instruments, including Test of Mathematical Problem-solving Ability and self-efficacy scale. After that, the data were analyzed using t test and linear regression. From the findings, it can be concluded that the enhancement of the students’ Mathematical Problem-solving Ability based on self-efficacy gains no different result.
Biodiversity literacy in science education
Authors: Katili A S , Utina R , Yusuf F M , Pikoli M , Dama L 
Published: July 2021

Abstract
Teaching the concept of biodiversity in learning activities especially science education is an important urgency to bring up biodiversity literacy competence. This article aims to examine the concept of biodiversity and ecosystems in science education activities, the level of student literacy on biodiversity, and several learning models in science education that can be applied in increasing the biodiversity literacy of students. The method used in this study is Knowledge mapping that begins with mapping students’ knowledge about biodiversity, covering the breadth of knowledge and depth of knowledge-Focus Group Discussion (FGD) involving students and lecturers-Experiments applying three learning models in lecture activities for biodiversity materials and comparing the three models tested. Results obtained from the study is that literacy competence biodiversity is a form that can be grown on the p Education science. The existence of biodiversity literacy capabilities will further have a positive impact in efforts to maintain, protect, increase awareness of the importance of biodiversity. The application of biodiversity literacy can be built into several models, techniques or learning patterns that are appropriate to aspects of the surrounding environment, environmental issues that occur, and the ability of students. Participants learners who have literacy skills biodiversity is good, will have a character of sensitivity to any changes that exist in the surrounding environment. The presence of this character in the later stages can me n make learners make efforts to establish, maintain and preserve biodiversity and ecosystem.
The influence of Edmodo application toward students understanding of slat hydolysis topic
Authors: Linggama F , Lukum A , Paputungan M 
Published: July 2021

Abstract
The research aims at investigating the influence of Edmodo application toward students understanding of the slat hydrolysis topic. It is quantitative research with a non-equivalent control group design. The samples for each experimental class and control class were 25. The data collection was by objective test as the instrument that consisted of the salt hydrolysis material. The technique of data analysis to verify the hypothesis applied t-test. Based on the statistical test result, the average value of post-test for the experimental class using the Edmodo application was 79,73, while the average value of post-test for the control class using the Edmodo application was 55,46. The data analysis result for students understanding shows that tcount was higher than ttable or 20,06> 1,67 at a significance level of 0,05, which means that H1 was accepted and H0 was rejected. Therefore, it can be concluded that there is an influence of Edmodo application toward students understanding in the slat hydrolysis topic.
Modelling of silt content using geographically weighted regression
Authors: Pramoedyo H , Riza S , Ardianti D , Oktaviarina A 
Published: July 2021

Abstract
Multiple linear regression is a method used to model or predict an object that sees the relationship between a dependent variable and a group of independent variables. Geographically Weighted Regression (GWR) is the development of multiple linear regression involving geographical factors. In this study, both methods were used in the study to analyze one of the soil elements, namely the silt soil texture. Through the Digital Elevation Model (DEM) data, the topographic variables used in the study are Eastness Aspects (Ae), Northness Aspects (An), Slope (S), Unsphericity Curvature (M), Vertical Curvature (Kv), Horizontal Curvature (Kh), Accumulation Curvature (Ka ) and Elevation (Elv). The results showed that the GWR model with fixed Gaussian weighting better than the multiple linear regression model. R
2 value of GWR was 57 %, greater than the multiple regression, which was 55%. And the SSE of GWR and multiple regression value were 2014,69 and 2177,19 respectively.
Teaching and learning of electric charge with PIMCA model
Authors: Nasra F , Mongan SW , Nusa J , Poluakan C , Mondolang AH , Lolowang J 
Published: July 2021

Abstract
Research on the physics learning of electric charge has been carried out using MR-SR (Multiple Representation and Semiotic Resources). The research aims to find out the outcomes of student learning using the PIMCA learning model (Presentation, Idea Mapping, Conceptualization, and Assessment formative) introduced and developed by Cosmas Poluakan. The research was conducted at the Department of Physics, Manado State University, with 22 pre-service teacher students as respondents using the One Group Pre-test-Post-test Design. The instruments used in the form of pre-test and post-test which have been tested and validated. The research implementation stage starts from the pre-test, and then the implementation of physics learning follows the 4 steps of the PIMCA model. The results of data processing and analysis obtained an average pre-test score is 18,88 and an average post-test score is 75,16. There was an increase in concept mastery. In the idea mapping stage only 2 concepts are correct to drafting concept mapping, 6 are correct from 10 concepts that were used as references. PIMCA MR-SR learning model is very effective in helping students find and understand the correct concepts of physics. The use of the PIMCA MR-SR as a new model in the teaching and learning process is very effective in learning physics, mathematics and science or in the STEM area.
Analysis of student difficulties in learning refraction of light
Authors: Dido F , Mongan S , Mandang T , Palilingan R , Mondolang A , Poluakan C 
Published: July 2021

Abstract
The use of semiotic resources in developing abilities and skills in physics problems is very important. PIMCA learning model (Presentation, Idea Mapping, Conceptualization and Formative Assessment) introduced and developed by Cosmas Poluakan is the focus of this research. The purpose of this study was to analyze student difficulties on learning the refraction using the PIMCA model based on multi-representation (MR). The type of research used experimental research with one group pretest-posttest design. The research was conducted in the Department of Physics, Manado State University, with 23 students as respondents. The test instrument used for this research has been validated. After processing and analyzing the data, the pretest average score was 15.9 and the posttest average score was 60.2. These results indicate that even though there is an increase in the average proportion of mastery of the refraction of light concept, generally students still have difficulty drawing the angle of incidence, direction of refraction and the position of refraction for the arrangement of 2 mediums. The results of this research recommend that in order to understand the concept of refraction, the use of the PIMCA model needs to provide more practice questions.
The application of multiple-choice in learning the doppler effect with PIMCA model
Authors: Tokolang I E , Mondolang A H , Mongan S W , Poluakan C , Silangen P , Makahinda T 
Published: July 2021

Abstract
An important factor for the effectiveness of learning is an assessment factor for both the process and learning outcomes. Research has been carried out related to the use of multiple-choice assessment in the MR-SR based PIMCA (Presentation, Idea Mapping, Conceptualization, Assessment) learning model introduced and developed by Cosmas Poluakan. This study aims to determine the level of understanding of the physics concept of the Doppler effect with the PIMCA model. The research method uses concurrent mixed methods. The research stage began with a pre-test, followed by a PIMCA model treatment which was interspersed with interviews and ended with a post-test. The research was conducted at the Faculty of Mathematics and Natural Sciences, UNIMA, with 24 student teacher candidates as respondents. The research instrument used a multiple-choice model (MMC) with a written test technique. The results of data analysis obtained a pre-test score of 1.25 and a post-test score of 7.13. The results showed that using the PIMCA model using multiple-choice assessment can improve understanding of the concept of the Doppler effect physics material.
Heat transfer analysis on the tool of heat exchanger of plate type
Authors: Umboh I , Rasu W A 
Published: July 2021

Abstract
North Sulawesi has a geothermal energy source which is renewable energy and can be used as a geothermal power plant or Geothermal power company(PLTP). The Geothermal Power Company(PLTP) is located in Lahendong and is a power plant that is friendly to the surrounding environment because it uses geothermal energy as its resource. In Lahendong Geothermal Power Company(PLTP) unit 2, there are important components used to convert steam into electricity, one of which is a heat exchanger. The research aims to find out the heat transfer coefficient and the effectiveness of the heat exchanger during commissioning with real time, based on operational data and installation data on heat exchangers in the Geothermal Power Company(PLTP) Lahendong Unit 2. From this study the results obtained were the highest heat exchange coefficient at commissioning was 107.47 kW / m2. K and the lowest at real time II was 66.93 kW / m2. K. Furthermore, the effectiveness of the highest heat exchanger occurred at commissioning of 51.96% and the lowest at real time II was 37.19%. From the results obtained, the heat exchanger has decreased both in the heat exchange coefficient and the effectiveness of the heat exchanger. The Increase of the effectiveness of the tool of heat exchanger will affect the increase in the heat transfer coefficient on the tool of heat exchanger.
Assessment of the values of science, education, tourism and the risk degradation of Pentadio geothermal areas to developing geotourism in the Limboto Lake Plain, Gorontalo
Authors: Manyoe I N , Arifin Y I , Napu S S S , Suma M D 
Published: July 2021

Abstract
Geothermal areas are unique. Therefore, it can be developed to become a geotourism destination. Limboto Lake plain has geothermal potential which is indicated by the appearance of several points of manifestation. This study aims to assess the value of science, education, tourism and the risk of degradation in the geothermal area of the Limboto Lake plain unit. The method used is the assessment of the value of science, education, tourism and the risk degradation issued by the Geological Agency. The assessment was carried out in two geothermal areas located on the plain of Lake Limboto, namely Geothermal Pentadio. The research results showed that the weighting of the criteria for the values of science, education, tourism and the risk degradation in the Pentadio geothermal area were 73.75%, 73.75%, 75%, 65%, respectively.
Development of learning devices with the PBL model using the Pythagoras theorem of RME approach
Authors: Rewah V , Sulangi V , Salajang S 
Published: July 2021

Abstract
This study aims to produce a Mathematics Learning Tool with Problem-Based Learning Model Using a Realistic Mathematical Approach in Pythagorean Theorem lesson for 8th-grade students of SMP Negeri 1 Tomohon that met valid, practical, and effective criteria. The study employs the ADDIE model of research and development to design and develop learning instruments involved, lesson plan, student’s worksheet, a test of learning outcome. Descriptive analysis results in that the development of the problem-based learning model using the realistic mathematical approach produced good learning tools because it met valid criteria based on expert opinion, the teacher’s ability to carry out learning was good, students were active during the learning process, students gave positive responses to learning. The developed test of learning outcome meets the criteria of validity, practicality, and effectiveness. It is concluded that the problem-based learning model using a realistic mathematical approach was effective in teaching the Pythagorean Theorem topic to 8th graders of SMP Negeri 1 Tomohon.
Development of mathematic learning devices using Project Based Learning on a flat side room
Authors: Mumu H , Sulangi V , Pangemanan A 
Published: July 2021

Abstract
Project based learning is a teaching model that systematically involves students in learning knowledge and skills through a process of inquiry. This study aims to develop learning tools on flat-sided building materials with PjBL in order to produce valid, practical and effective tools. This research includes development research, namely Analysis, Design, Development, Implementation, Evaluation. Based on the validity trial data, the learning tools that have been validated and revised are in the valid category based on the evaluation of the three validators who gave valid statements. There are 5 students who complete the learning process or 83%, so it is stated that the learning tools developed are effectively used in learning. Practical learning devices are in accordance with the responses or responses of all students who are positive and because the three validators state that the tools are practical and can be used. The results obtained can be concluded that the learning device with PjBL on the material of the flat-sided shape that has been developed meets the valid, practical and effective categories so that it is suitable for use.
Development of Bridge and Lever Type Compact Compliant Mechanism for Micro Positioning Systems
Authors: Marathe Parag , Pardeshi Sujit S. , Deshmukh Bhagyesh 
Published: July 2021

Abstract
Nowadays, for precision positioning applications (Micro-Electro-Mechanical Systems, Nano/Micro positioning devices), compliant mechanisms are extensively used over traditional mechanisms. Compliant mechanisms are joint less mechanism having merits as no wear and friction, no backlash and no lubrication. In this paper, a newly developed flexure hinge based bridge and lever type compact compliant mechanism has been proposed for the precision linear displacement applications. This mechanism can be used in the portable cameras for image stabilization, lens shutters, alignment and levelling devices, etc. The key performance parameters for developing the compliant mechanism are the input displacement/force, output displacement and amplification ratio. For designing compact amplified compliant mechanism (CACM), Pseudo-Rigid-Body-Model (PRBM) method is used. The finite element analysis of developed micro-displacement amplifier compliant mechanisms carried out by using ANSYS workbench. The analyses and experimentation is performed for the input displacement, output displacement and amplification ratio of mechanism. An input force range considered for analysis is in between 1 N to 50 N. All the results from analytical, simulation and experimentation are compared. The error in output displacement is observed up to 6% and the geometric amplification ratio for the mechanism is observed up to 6.5.
Design and development of a quadruped shuffling mobile robot
Authors: Lee C Y , Sharif M H A , Vinayagan S , Othman W A F W , Alhady S S N , Wahab A A A 
Published: July 2021

Abstract
Interest in creating legged locomotion has increased compared to wheeled robots since wheels, while easier to design and fabricate, are less effective when traveling across certain surfaces. Legged walking robots are mostly based on a quadrupedal living creature’s biological concepts, whether an insect or mammal. For a walking robot, sequences of motions are understood as ‘gaits’ to determine the robot’s mechanism. The proposed method is the creep gait, which is easy to fabricate and has allowed the algorithm’s proper user control. Meanwhile, the shuffling motion ensures the maintenance of the robot’s stability and vertical movement. Stability and gait-planning are also crucial in selecting the suitable quadruped mechanism, depending on the robot’s application. The result is a quadruped with the lowest risk of toppling and stable carrying capacity by combining the two gaits. The robot has a linear velocity of 1.09 cm/s.
Development of customized support for the prevention of Pressure Ulcer (PU) using multi-materials printing
Authors: Arumugam Sivasankar , Ranganathan Rajesh , Pugalendhi Arivazhagan 
Published: July 2021

Abstract
Pressure Ulcers (PU) seems to be one of the most challenging healthcare problems around the world. It may result in significant morbidity, mortality and is associated with high cost in terms of treatment and care. PU is considered to be the third most expensive disorder after cancer and cardiovascular diseases. Though, modern medical science has launched a variety of treatment methods, prevention is the best way to overcome. As it could be seen from the current market design, most of the products provide a cushioning effect to the end user, but this lacks in product customization. Further, these products are not custom made to meet the end user needs and these products are expensive to be used. Understanding the above intricacies, the current research is focused entirely to be different from the existing product design, working, manufacturing methods and materials for the development of a product to redistribute the pressure for the reduction of PU. The projected design purely depends only on mechanical materials and mechanical behaviors. In this work, the number of phases of design was carried out through Solid Works software. The deformation and stress analysis was carried for all the design phases for obtaining the better design. Finally, the prototype is developed through Additive Manufacturing (AM) technology with the multi-material combination. The final prototype was evaluated experimentally using emed® sensing platform for the flexibility and pressure distribution also compared with the existing cushions.
An Insight into the Scope of Implementation of Intelligent Welding in Welding of Titanium
Authors: Bupesh Raja V.K. , Palanikumar K. , Sonawwanay Puskaraj D , Sharma A.V.N.L. , Vijaya Kumar P , Ramana Murthy E.V.V. , Deepak Sairam M. , Sundar Kasyap A.V.R. , Krishna Raj S. 
Published: July 2021

Abstract
Traditionally welding is considered as an art rather than a science. The quality of the weld is dependent on the skill and intuition of the welder. The welding process is mostly not reliable and labor-intensive. The solution to the problems in welding lies in utilizing intelligent welding techniques where in the selection of weld parameters like voltage, current, speed etc and defect control is done intelligently by the automated welding system. The intelligent welding system shall comprise elements, viz., control system, sensing, design and modeling of process and application of artificial intelligence. The application of intelligent welding system has developed into a new field of automation called as ‘Integrated Computational Welding Engineering (ICWE)’. The welding of titanium and its alloys is predominantly dependent on the skill of the welder. Majority of research and industrial practice is based on the traditional manual welding process and hence it is prone to defects deterioration of metallurgical, mechanical and corrosion properties. There is scope in adopting ICWE in welding of titanium and its alloys.
Optimization of Power and Torque with lower Exhaust Noise for FSAE Vehicle
Authors: Lohar Sanjay 
Published: July 2021

Abstract
The exhaust noise is considered to contribute disturbance to large extent in any vehicle. The sound wave cancellation device is used for better noise attenuation without much compromise on engine efficiency. This paper aims to design an advanced muffler which gives considerably lower back pressure in exhaust system line, thereby optimizing the power and torque of an engine. Study includes close monitoring of parameters such as power, torque, and transmission loss within the given boundary conditions. The limiting condition laid by Formula Society of Automotive Engineer (FSAE) is satisfied using Ricardo Wave Build software.
Study of corrosion behaviour of Al2O3-13 % TiO2 and Cr2O3 coated ship hull steel in 3.5% NaCl solution
Authors: Sharma Aaishwarika Raj , Goyal Rakesh 
Published: July 2021

AbstractCorrosion degradation of ship hull plates is an important aspect responsible for failure of ships in marine environment. Surface coatings are being used to protect the metallic materials from corrosion. In this work, Al2O3-13 % TiO2coating and Cr2O3coating were deposited on ship hull building material using D-gun flame spray method. The corrosion behaviour of coatings and substrate was investigated using cyclic polarization test. The microstructure and phase composition of coatings were analysed by scanning electron microscopy (SEM) and electron dispersive spectrum (EDS). The corrosion rate was evaluated from the corrosion parameters extracted from graphs. The uncoated and coated substrates were compared on the basis of corrosion parameters.