bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of temperature measuring instrument using NTC thermistor of Fe2TiO5 based on microcontroller ATmega 328
Authors: Munifah S S , Wiendartun  , Aminudin A 
Published: November 2019

Abstract
Thermistor is one of temperature sensor which works based on resistance changes and can be used as a temperature measuring instrument. In a previous study, an NTC thermistor of Fe2TiO5 was made in the form of raw pellet without doping, sintered at a temperature of 1200°C for 2 hours in oxygen. A thermistor constant value that obtained from the characterization process is 3821.65 K. This result showed that the thermistor has good quality because it has relatively large constant thermistor. Fe2TiO5 is one of semiconductors that used as basic material for main fabrication component of NTCs as temperature sensor. In this study, temperature measuring instrument using NTC thermistor of Fe2TiO5 sensor based on microcontroller ATMEGA 328. The NTC is assembled in parallel with a fixed resistor and then assembled on ICLM741 and microcontroller ATMEGA 328. The magnitude of the resistor varies at 1 MΩ, 2 MΩ, and 3 MΩ with each resistor having a tolerance value of 1%. From these variations we can get sensitivity value with the value of 0.00688 MΩ/°C; 0.0133 MΩ/°C, and 0.02195 MΩ/°C, respectively. As result, this temperature measuring instrument shows good sensitivity when assembled in parallel using 3 MΩ fixed resistor with a tolerance value of 1% and capable of measuring the temperature in the range 26°C – 103.2°C.
The electrical properties characterization of MG-811 gas sensor toward the temperature alteration of soil testing chamber
Authors: Saptiani P , Aziz M H , Iriyanti M , Aminudin A 
Published: November 2019

Abstract
The concentration of CO2 in soil and air is strongly influenced by temperature. When the temperature increase, the thermal energy will increase too and make the particle motion faster. In detecting CO2 gases, the MG-811 gas sensor has a high sensitivity in detecting CO2 gases in the air. The purpose of the research is characterized the electrical properties of MG-811 gas sensor toward temperature alteration. The used method is the experimental method, where the chamber is made of iron filled with CO2 derived from the CO2 gas tube. In the chamber has been paired digital thermometer and MG-811 gas sensor. The temperature alteration in the CO2 gas is regulated by the heater element attached to the chamber. The output of the MG-811 gas sensor will be processed by microcontroller, so it measures the CO2 concentration in units of parts per millions (ppm). The higher the measured temperature on the gas causes faster particle motion, the measured CO2 gas concentration is high and the resulting output voltage is low. But it happens if the temperature changes high, because the gas sensor response is slower than the temperature sensor used.
Characterization of turbidity water sensor SEN0189 on the changes of total suspended solids in the water
Authors: Hakim W L , Hasanah L , Mulyanti B , Aminudin A 
Published: November 2019

Abstract
Turbidity has an indication that the liquid has been contaminated. In the testing process, turbidity in water can only be measured by sampling. To be able to maintain the quality of water, required a tool that can monitor and measure the level of turbidity of water in real time. water turbidity sensor SEN0189 is a sensor that works by measuring the amount of light from infrared led into the phototransistor that will produce the output voltage on the sensor. The study was conducted to be able to characterize the ability of sensors in detecting water turbidity. The method used is to test the sensors using sediment soil that has been filtered with a diameter of <60μm to be added into the pond containing 1 liter of water. The results show that the greater the concentration of sediment dissolved in the water pool the sensor output voltage will be smaller. The sensor has a sensitivity of -0.0008 and the output voltage when the sensor detects 0 NTU is 3.9994 volts with 5V operating voltage and the sensor can detect water turbidity linearly within the test range 1.873 NTU to 1011.93 NTU.
Utilization of the school environment as a learning resource to improve critical thinking skills and scientific attitudes
Authors: Muharam D A M , Munandar A , Sriyati S 
Published: November 2019

Abstract
This study aims to determine the effect of utilization of the school environment as a learning resource in improving critical thinking skill and scientific attitude. This study compares differences in the improvement of critical thinking skills and scientific attitudes between the agricultural and coastal environment. The research method used is quasi experiment method. This design used two experimental groups and two control groups. The experimental and control class I are the experimental and control classes located in the agricultural environment. Experimental and control class II are experiment and control class located in coastal environment. Data collection techniques in this study were conducted through tests. The conclusion of this research is the utilization of the school environment as a learning resource, both in the agricultural and coastal environments can improve critical thinking skill and scientific attitude. However, the improvement of critical thinking skill and scientific attitudes between the agricultural and coastal environment do not have a significant difference.
The Conceptual change of human respiratory system through POE-Based Learning
Authors: Kusnadi K , Lazuardi Z , Surakusumah W 
Published: November 2019

Abstract
Study to analyse the effect of Predict-Observe-Explain (POE)-based learning to the conceptual change of high school students on human respiratory system concept has been done. This study was a weak experimental with one group pre-test and post-test design. The data were obtained by a pencil and paper test in the form of reasonable-multiple choice with two tiered test items. The data were analysed by mean of difference test between pre-test and post-test scores. The finding of study shows that a significant change in the percentage of students scientific conception between pre-test and post-test. The result shows that the increase of student conceptual change with N-gain average is 0.52 (moderate category). In addition, the result also shows that a pattern of student conceptual changes that positive changed is 44.3%, positive survival is 20.5%, negative change is 11%, and negative survival is 24.2% respectively. Based on result shows that POE-based learning strategy can be developed in high school to support students in resolving conceptual change of scientific concept.
Application of corrosion e-module to improve high-level thinking ability
Authors: Subarkah C Z , Ayesha R , Nurhayati A , Nuryantini A Y 
Published: November 2019

Abstract
The media used in learning can be used as an alternative effort to improve the ability of high-level thinking. Therefore, the purpose of this study is to apply corrosion e-module to improve students’ high-level thinking ability. The method used is pre-experiment with research subjects as much as 38 students of Chemistry Education second semester. Information is obtained by measuring the improvement of students’ high-level thinking ability. The n-gain value in cognitive analyzes is 0.639 with moderate improvement category, the cognitive rate is evaluated at 0.543 with the category of moderate increase and the cognitive level created by 0.73 with the high increase category. Overall n-gain students’ high thinking ability is 0.637 with moderate improvement category. This shows the teaching materials in the form of e-module play a role in activating the learning process that impact on learning outcomes. Thus, corrosion learning using e-module can improve students’ high-level thinking ability.
Developing art geometric app based on flash player for student in elementary school
Authors: Irawan A , Syamsiah S , Rangka I B , Niswati Z , Mustika F A , Wibawanti Y , Alamsyah N , Marlina D , Rahayu W , Pinahayu E A R 
Published: November 2019

Abstract
The purpose of research is developed learning mathematics to the matter wake up Three dimensions-based e-learning use macromedia flash. A method of this research is research and development (RnD). The phase that carried out is to identify matter by means of a analyse needs that is in research locations. Next design products which adjusted with needs of material geometric three dimensions. Math teacher and the design do validation to judge feasibility products have been made, repair based on input from validator and to pilot a small scale/limited products. The research was done at student in Elementary School. The results of the study of applications that can help teachers in conducting the process of learning and the teaching material to receive help student’s geometric about three dimensions. Next undergone a try to use the widely, revision of the material further and mass production math as the basis for elementary school.
Application of problem-based learning assisted intelligent learning media to improve the cognitive aspects of students
Authors: Wahyudin  , Riza L S , Efendi R , Muhkarom I 
Published: November 2019

Abstract
Problem Solving is one of the capabilities that must be possessed by students in the department of Software Engineering, this ability is directly proportional to the cognitive abilities possessed by learners. Problem Based Learning Method (PBL) is a proven learning method in improving problem solving ability of learners. To determine the effect of PBL on students majoring in Software Engineering, conducted research on students, using the PBL method that is assisted with learning media. Learners are divided into groups to be given a ‘problem’ to be solved by each group. Educators can provide educators questions that lead to the solution of problems given to learners in the form of materials, scripts or in other forms of learning media. Learning media made with Intelligent Tutoring System (ITS) where this media can guide learners in depth of certain material that has not been mastered. This can be seen from giving media suggestions to learners after doing pretest or posttest. The results of this study can be quite successful with an increase in the gain index of 0.36 that can be categorized as a moderate increase.
Students’ acceptance towards blended learning implementation
Authors: Winarto  , Panjaitan M , Tambunan A P 
Published: November 2019

Abstract
The objective of the inquiry is to observe students’ acceptance towards blended learning implementation. It focuses on students’ perceptions and attitudes towards using easyclass.com as a learning management tool and face-to-face learning. The case study has been conducted among business students in a private university in Medan, North Sumatera. The research employed a quantitative approach based on the Technological Acceptance Model (TAM), and asked the students to answer a questionnaire. They also were interviewed to acquire insights about the blended learning implementation. The study concludes that the students’ awareness and attitudes were encouraging towards the learning management tools in term of the usefulness and the ease of use. However, negative impressions also were underlined during the interview with the students. In summary, blended learning implementation requires an integrated approach where the learning management system is useful and ease to use. Finally, an active participation from both teachers and students is a must in the blended learning implementation.
Using simulation in network security learning
Authors: Nugroho E P , Yuliana R , Junaeti E , Kusnendar J , Prabawa H W , Munir  
Published: November 2019

Abstract
Widespread use of computer networks, opening up opportunities for the emergence of crimes involving computer technology itself. If crime or attacks have occurred, reliable handling is needed to overcome crimes in the internet. In general, simulation can be understood as a representation of imitation of the functionality of a system or process. Preliminary studies related to the development of simulation tools in network security learning show information that simulation in general can increase student involvement. In its development, the simulation media utilizes Fungus 3.7.0 software. Fungus is a package available for engine unity. The feasibility of using simulation media in learning is judged on the basis of an instrument that generally evaluates several important components in learning media, including the availability of information for students, content-structure and navigation, interactivity, and assistance and accessibility technology. The development of network security simulation devices has not been able to ascertain whether the involvement of simulations in the learning process improves students’ cognitive abilities.
Analysis of two-level representation about the heat convection between teachers and pre-service teachers
Authors: Anam R S , Widodo A , Sopandi W 
Published: November 2019

Abstract
The aims of this study are to analyse and compare the two-level representation (macroscopic and microscopic) about the heat convection concepts. This research involves 15 teachers and 33 pre-service teachers. Data gathered using the diagnostic test to explore the two-level representation through verbal and drawing tests. The result shows that at the macroscopic level many respondents have a correct answer but decreased in microscopic level even more at the visualization test, just a few respondents can give a correct visualization according to scientific conception. This research found that all participant is well known about the macroscopic level but they have a lack of knowledge about the microscopic level. This research suggests that to make students more understand about science the learning must give multiple representations to make they understand about scientific phenomena.
The Development of Problem-Based Learning Material for Integrated Science Subject in Primary Teacher Education Program
Authors: Amini R , Helsa Y 
Published: November 2019

Abstract
This research and development aim to develop a learning material for the learning improvement quality of Primary Teacher Education (PGSD) students in Integrated Science subject. The research method used is Borg and Gall model. The research stages are: (a) curriculum analysis, the students’ and teachers’ need analysis, (b) the learning material development stage which is analyzed by experts’ judgment, and (c) the pilot stage. The research instruments are observation sheets, interview guides, validation sheets, teachers and students’ response questionnaires, tests, performance assessment sheets, and attitude questionnaires. The results show that the learning material is valid, practical and effective to improve Integrated Science subject learning quality.
Science education at Islamic university: vision and distinction
Authors: Nasrudin D , Helsy I , Rochman C , Irwansyah F S , Munir  , Mahmud  
Published: November 2019

Abstract
The Indonesian National Qualification Framework Curriculum or often called the KKNI curriculum has forced all universities in Indonesia to equate curriculum content according to national standards, not least the science education curriculum at the Islamic University. This paper wants to describe the characteristics of curriculum and science learning in one of Islamic University in Indonesia. The research method used is descriptive qualitative through stages of science education curriculum analysis, interview with representatives of curriculum development team and Focus Group Discussion (FGD). The results of this study are: (1) there are differences of science content in science education curriculum at Islamic University, either with the similar program or with pure science program in the public university. (2) Islamic content as an indicator of the achievement of the university’s vision and differentiator should not be expressed in a special course, but rather incorporated in the existing courses with the appropriate integration model. (3) The profile of learning achievement of science education students at Islamic University is expressed in three complementary coordinate axes, namely content, pedagogical and Islamic values. This difference in learning achievement affects lecturing activities from planning, implementation to assessment.
Realistic mathematics education with local instruction theory for enhancement students’ procedural fluency
Authors: Nuraida I , Kusumah Y S , Kartasasmita B G 
Published: November 2019

Abstract
This research is motivated by the lack of application of realistic mathematics learning and the low procedural fluency ability in schools. The research objective is to analyse the improvement and achievement of procedural fluency based on students’ initial mathematical abilities in learning reaistic mathematics and LIT. The research method used was design research with two cycles. Population in SMP Negeri 5 Kota Tasikmalaya with sample class XI. The instrument used in this study is the question of the ability of procedural fluency in the form of a description. Data processing uses statistical tests and research results show that realistic mathematics learning with LIT can improve procedural fluency.
E-learning assisted problem based learning for self-regulated learning and mathematical problem solving
Authors: Yaniawati R P , Kartasasmita B G , Saputra J 
Published: November 2019

Abstract
This study aims to analyze the effectiveness of e-learning assisted problem-based learning (PBL) to enhance self-regulated learning and its impact on college students’ mathematical problem-solving. This study used mixed methods research with embedded design by comparing groups of e-learning assisted PBL and conventional learning. The subjects were undergraduate students of mathematics education in Bandung Indonesia. The instruments were a test, questionnaire, interview guidelines, and observation guidelines. The results show that: The mathematical problem-solving ability of students who used e-learning assisted PBL is better rather than those who used conventional learning; The self-regulated learning of students who used e-learning PBL is better rather than those who used conventional learning; There is an influence of self-regulated learning on mathematical problem-solving skill.
Clustering for multi-dimensional data set: a case study on educational data
Authors: Yudhanegara M R , Lestari K E 
Published: November 2019

Abstract
This paper present two-step cluster method to handle data sets in educational data mining. It can handle multi-dimentional metric data points especially in complex data sets. For a case study, we use tracer study data in order to assign a clustering of alumni based on the profile. The result of clustering will help the school to evaluate and improve the quality of its graduates.
Didactical design work sheet of complex variable function based on epistemology, didactical, and learning trajectory to enhance student’s ability for representation and communication
Authors: Sumiaty E , Dedy E 
Published: November 2019

Abstract
One of the important keys to improve undergraduate students’ learning process is by using a good learning material, especially for those who are from mathematics department. In this study, the learning material was developed not merely by considering the characteristic of the materials and supported by appropriate models, methods and approaches. Further than that, it also pays attention on learning obstacles faced by the undergraduate students from both internal and external perspectives. By this way, the learning material was made based on epistemology, didactic, and learning trajectory. This study was undertaken by applying Didactical Design Research (DDR) which has three analytical phases: didactical situation analysis prior; metapedidactical analysis; and retrospective analysis. This study was beginning with problems (concept founding or even concept reinforcement), then the problems was analysed by the students by referring textbook for students and lastly making the teaching guide based on the learning obstacle, didactical, and learning trajectory. After learning process and learning obstacle test was done, an analysis was carried out and it shows that the didactical design successfully improved the undergraduate students’ representation and communication skill. However, it seems that the undergraduate students’ representation skill does not significantly affect to their communication skill.
The van hiele levels of geometric of students in first semester reviewed from gender
Authors: Sudihartinih E , Wahyudin  
Published: November 2019

Abstract
This research is an exploratory study that aims to examine the geometry abilities of students based on gender. Participants numbered 90 people. The number of female students is 72 people and male students are 18 people. Participants are students of biology education programs who attend basic mathematics lectures in the first semester at one of the universities in Indonesia. The instrument of the geometry thinking level used test from CDASSG project. The results showed that from 18 male students as many as 4 people were at the level of pre-visualization, 2 were at level 0, and 12 were at level 1. Whereas of 72 female students, 13 were at pre-visualization level, 21 were at level 0, 34 people are at level 1, and 4 people at level 2. Based on these results there is a difference between male and female students, namely some female students reach level 2, but not male students.
Rigorous Mathematical Thinking: Why are Cognitive Levels Important in Three-Dimensional Learning for Pre-service teachers?
Authors: Firmasari S , Santi D P D 
Published: November 2019

Abstract
Learning material three dimensions is closely related to processing high-level abstract thinking skills. The ability in question is Rigorous Mathematical Thinking (RMT). Some research results do not focus on the relationship of RMT with cognitive levels. The cognitive relationship between RMT is essential because students must have abstraction skills to be able to teach according to the concept. The study aimed to determine the ability of RMT mathematics teacher pre-service based on cognitive levels in a three-dimensional material. The research method is qualitative descriptive because of the use of test sheets and interviews as instruments. The research sample consisted of three students, each with low, medium and high cognitive abilities. Research has resulted in the ability of prospective RMT mathematics teachers to have a close relationship with their cognitive level. High-level RMT students can link the three-dimensional concepts of the Pythagoras theorem, great line propositions, angular definitions, the definition of squared angles, and several trigonometric principles. Medium RMT, able to sort diagonal concepts until the trigonometric proposition is systematic. A low RMT can label a right triangle and cube side. The results of this study are the basis for giving appropriate treatment to students before carrying out teaching practices.