bluuebunny/crossref_metadata_2025 huggingface dataset:
Modelling the Temperature and Efficiency of a Waste Electrical Power Generator Using the Impact Wrench to Replace a Turbine
Authors: Ngaderman H , Sinaga S
Published: June 2020

The objective of the research is to obtain the maximum temperature in the boiler work space and calculate the efficiency of a simple type of waste treatment system. The modelling using several secondary data is the method in this study. Researchers are using impact wrench, where the tool works based on pressure. Boiler pressure is 8 × 105 N/m2, volume 0.05 m3 while the volume of impact is 7.1 × 10−4 m3. The temperature first 0°C will increase to temperatures in the search. Exterior expansion work is 4.17 × 104 J. The temperatures of fluid for mass 50 g is 396°C. The Specification of impact i.e. pressure 6 × 105 N/m2, velocity 7000 rpm and torque of 500 Nm. The grow up for speed then created increasing of EMF induction (ε) and electric current. The trash of mass 10 kg and calorific value of 2500 kcal/kg then its power is 6 × 106 W for 1 second 1 hour and 10 hours. For the first second, heat of the waste with a mass 5 kg is 1.25 × 107 J and yields 32 % of efficiencies. The waste with a mass of 10 kg is 2.5 × 107 J and efficiency of 16 %, decreasing forming the curves which looks like an exponential function until the second at 1.155 where the calorie is 1.08 × 107 J (efficiencies 3.5 %) and (efficiencies 1.75 %). The waste with a mass of 5 kg have greater efficiency compared to 10 kg but decreased significantly.
Critical Thinking Skills (CTS) and Rigid Object Rotation (ROR) Concept Mastery Through Multiple-Based Representation (MR) in Mechanics Learning Using GeoGebra Software
Authors: Hartini T I , Liliasari S , Setiawan A , Ramalis T R
Published: June 2020

This research examines critical thinking skills and concept mastery of the Rigid Object Rotation (ROR) in Mechanics learning in Physics education students. There are some computer programs in Mathematics learning used in Physics learning, e.g. GeoGebra. The subjects of this study were 21 students of third semester at one private university in Jakarta. This is a mixed method research with quantitative and qualitative triangulation. The data collection instruments were the tests results on the Rigid Object Rotation (ROR) multiple-based representation (MR) concept that corresponds to the concept of understanding by using revised Bloom’s taxonomy and California Critical Thinking Test (CCTT) to evaluate critical thinking skills and Critical Thinking Disposition Inventory (CTDI) to measure students’ critical thinking attitudes. The results show that the average rate of pre-tests was 44.38 and the average rate of post-test was 68.14 with percentage of N-Gain of 42.5 % for the mastery of ROR concept which shows improvement. The results of multiple representations (MR) analysis on students’ worksheet (SW) using GeoGebra software for ROR were 61.7 % for verbal, 85.7 % for picture, 45.3 % for graph and 77.9 % for Mathematics which show considerable percentage. The results of the analysis on Critical Thinking Skills (CTS) was categorized as good as well as the improvement of ROR concept mastery using GeoGebra software was in good category.
Numerical Solution of Nonlinear Schrodinger Approaches Using the Fourth-Order Runge-Kutta Method for Predicting Stock Pricing
Authors: Kartono A , Fatmawati V W , Wahyudi S T , Irmansyah
Published: June 2020

Stocks are a certificate that shows the book of ownership of a company. The certainties of stock price are important for investors. This study aims to predict changes in stock prices. The predicting model of the stock prices in this study uses the non-linear Schrodinger equation. Because this equation has no known analytical solution, so a numerical solution that calculated using the fourth-order Runge-Kutta method to determine the stock prices. This research will also develop an algorithm of numerical solutions in the fourth-order Runge-Kutta method. The analogy of parameters between the nonlinear Schrödinger equation with economic parameters that affect stock prices is obtained based on the hypothesis and the economic theory. The assumed main parameters influence stock prices include movement or growth in average stock prices that is volatility, strike price, speed of average stock returns, adaptive market potential, and current stock price. This present method has been validated to predict the real stock prices of two companies. The prediction results obtain the value of mean absolute percentage error (MAPE) of Astra Agro Lestari Tbk. (AALI) is 0.4633 % and Polychem Indonesia Tbk. (ADMG) is 3.48678 %. Based on these MAPE results, the non-linear Schrodinger equation has shown that good agreement with the real stock price.
Analysis of Physical Properties of Rock Reservoirs Using Well Log Method in Determining Reservoir Quality in “JEONA” Field, Central Sumatra Basin
Authors: Cahyaningati W P , Mariyanto M , Lestari W
Published: June 2020

The industrial revolution 4.0 has required collaboration on the oil and gas industry sector. One of the problems is the technology transfer and the increasing of oil reserves supply. It needed to productivity analysis for reservoir rock characterization and subsurface profile that will determine technology transfer. This study was aimed to obtain the hydrocarbon reservoirs quality based on petrophysical parameters. The reservoir zone of JEONA_35 well in 1527.77 - 2067.21 ft. From NPHI and RHOB logs, there is a cross over in 1990-2020 ft that interpreted as oil fluid. The PHIE is 30 %, Sw is 20 % and Vclay is 10 %. Electrofacies analysis shows that the reservoir zone was located in Bekasap and Menggala Formations (1527.77 - 1889.25 ft). In Bekasap Formation, the gamma ray log pattern is a cylinder block shape and thick from the top until base formation, it deposited in the channel fill distribution with thin sandstones lithology. In Menggala Formation, gamma ray log pattern shows the uptrend bell shape that was deposited in the fluvial - delta distribution with thick sandstone. So, it can be concluded that JEONA_35 reservoir has a good quality with the water saturation is low relatively, so the oil saturation is high relatively.
Ecopreneurship-Oriented Project-Based Learning (PBL): An Approach to Enhance Students’ Problem-Solving Skill
Authors: Abidin E N , Hariyono E
Published: June 2020

This research aims to analyze the enhancement of students’ problem-solving skills by implementing ecopreneurship-oriented Project-Based Learning (PBL). The type of this research is descriptive quantitative with True Experimental Methods and Control Group Pre-Test and Post-Test Design, which is applied to 49 science-majored sophomore students in SMA Negeri 1 Mojosari, Mojokerto which are chosen by purposive sampling technique. The instruments of this research are problem-solving pre-test and post-test in which the result is analyzed using normalized gain test and the Mann-Whitney test. Based on the data analysis, the result obtained is that there is a significant difference between students’ problem-solving skills in the experimental class and the control class, where the experimental class’ n-gain score is 0.83 in high criteria whereas the control class’ is 0.53 in medium criteria. It can be concluded that ecopreneurship-oriented PBL model can enhance students’ problem-solving skill.
The Development of Android-Based Physical Learning Media Brain Quiz Game Assisted on Momentum and Impulse Materials
Authors: Rosyid F A , Arjo S , Suminten N , Sandjaja D P , Makdiani N
Published: June 2020

This research was conducted because of the limited number of Android-based physics learning media. The purpose of this study was to develop a physics learning media in the form of an Android application on momentum and impulses material. This research is development research by adopting the ADDIE development model. At the analysis stage, problem analysis and needs analysis were carried out. At the design stage, when the initial design began to be made, the next step was material and media experts validation. In the implementation phase, learning media design was tested on a small scale test with a total of 8 respondents and a large scale test with a total of 96 respondents from 3 schools in the city of Tangerang. The evaluation phase was done by analyzing expert validation data, small-scale tests, and large-scale tests. Data obtained through the observation method were analyzed descriptively qualitatively. While the validation data were analyzed descriptively qualitatively and quantitatively. The average score of material experts is 90.16 % (very good), media experts 81.30 % (good), small scale tests 80.74 % (good), and large scale tests 81.67 % (good). So, It can be concluded that this application is worthy of being used as a medium for physics learning.
Developing of Physics Modules Interrelation of Quran and Science in the Material of Vibration and Waves
Authors: Wati M , Daniati H , Miriam S , Hartini S , Mahtari S , Misbah M , Haryandi S , Dewantara D
Published: June 2020

This study aims to produce a physics module that is interrelated with the Quran and science in vibration and wave material that is valid, practical, and effective. The type of research is research and development using the ADDIE model. The subjects of the trial were 21 students in class VIII at one of the junior high schools in Banjarmasin. Data were obtained using module validation sheets, observations with lesson plan implementation sheets, and learning outcomes tests. Research with results that show modules in the valid category, the implementation of lesson plans in very practical categories, and student learning outcomes with effective categories. The conclusion is that the physics module of the interrelation of the Quran and science, in the material of vibration and waves, is appropriate to be used for learning in the classroom.
A Simple Numerical Matrix Method for Accurate Triplet-1s2s 3S1 Energy Levels of Some Light Helium-like Ions
Authors: Pingak R K , Deta U A
Published: June 2020

Triplet-1s2s 3S1 energy levels of some light Helium-like ions (Li+ to Ne8+) were numerically calculated using a truncated-matrix method implemented in a simple Mathematica code. The two-electron wave functions were expanded in finite number of basis states consisting of hydrogenic s-orbitals. Here, the Hamiltonian matrix used was of size 15×15, 25×25 and 35×35. From the results, triplet-1s2s 3S1 energies of the ions were in good agreement with other advanced and highly accurate calculations in the literature. Comparisons with one of the most accurate calculations in the literature showed that our results were very accurate with the largest error in energy being only 0.135 % for Li+ ion and the smallest one being approximately 0.018 % for Ne8+ ion energy, when 35 basis states were used in our calculations. Errors from our calculations were also much lower than those from the geometrical model.
Synthesized of Li4Ti5O12 Materials via Sol-Gel Method to Lithium Ion Battery Anodes
Authors: Najihah A I , Priyono S , Supardi Z A Imam , Subhan A , Prihandoko B
Published: June 2020

Li4Ti5O12 (LTO) anode is one of ion lithium battery important components. LTO anode has been synthesized using solid state reaction method that was calcined at 900°C and produced relatively large particle sizes and low electrochemical performance. The Low electrochemical performance can be improved by replacing the anode synthesis method using sol-gel method. This research used the sol-gel method to synthesize LTO anodes with calcination temperature at 900°C and holding time at 2hr with the aim of obtaining homogenous particle size distribution with small particle size average and high discharging capacity. X-ray diffraction (XRD) characterization was carried out to find the crystalline phase formed while field emission-scanning electron microscopy (FE-SEM) was carried out to find the morphology and particle sizes distribution. Electrochemical performance of LTO anodes was measured from cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and charge-discharge (CD). The LTO-spinel phase was identified as the primary phase and TiO2-rutile phase as the impurity phase. The particle size distribution is 0.24μm and the sample consisted of particles that agglomerate without no pores. This anode has high electrochemical performance especially discharging capacity of 302 mAh/gr at 1C.
Control Position of Mobile Robot Based on Odometry Method and PID Controller
Authors: Albab A N , Rahmawati E , Yantidewi M , Sucahyo I , Dzulkiflih  , Firmansyah R R
Published: June 2020

A mobile robot had been made based on kinematics drive differential concept. This robot used odometry method in order to reach a position and determine its current position. Proportional Integral Derivative (PID) control has been applied for improving response of robot while it reach a detremined position. Two rotary encoder sensors were attached at right and left side of robot motors for measuring distance. While motor rotating, rotary encoder sensors counted a number of pulses conversed into left and right wheel mileage. Both of them were used to get robot position at certain time (x, y, and heading angle). Robot passed some tracks and reached two positions in each track as destination positions. These positions are the position which had final heading 30° and 90°on first track, 45° and 90° on second track, 60° and 90° on third track. PID control was examined by put mobile robot in first position 0,0,0°. Some PID parameters have been applied to examine the performance and response of robot. The increment of derivative parameter reduced the steady state error and increased the stability of system.
Implementation of Case Based Learning (CBL) to Improve Scientific Reasoning Skill on Simple Harmonic Vibration Topic
Authors: Wati D A , Sunarti T
Published: June 2020

This research aim to describe the increase scientific reasoning skill and the responses learners toward of implementation Case Based Learning (CBL) in SMA Negeri 1 Puncu. The type of this research is pre-experimental with one group pretest-posttest design use 1 implementation class and 2 replication class. The data analysis used analysis implementation of learning and analysis pretest-posttest use t-pair test, analyze n-gain and ANAVA. The result show that the scientific reasoning increase in SMA Negeri 1 Puncu are medium category, The replication class 1 with a value  of 0.6230, The replication class 2 with a value  of 0.6002 and The implementation class with a value  of 0.6020 with the result that increase in these class are consistent. Based on the results, it can be concluded that there was improvement scientific reasoning skills after implementation of Case Based Learning (CBL) on simple harmonic vibration topic.
Barriers to Scientific Creativity of Physics Teacher in Practicing Creative Product Design
Authors: Suyidno S , Susilowati E , Arifuddin M , Sunarti T , Siswanto J , Rohman A
Published: June 2020

Barriers to scientific creativity often make it difficult for physics teachers to recognize their creative potential, let alone train their students to be creative. The research aims to identify the physics teachers’ ability in practicing creative product design and their creative barriers. This research includes mix-methods using a survey approach and continued by Focus Group Discussion. It has involved 67 physics teachers in South Kalimantan divided into three groups (senior teachers, beginner teachers, pre-service teachers). The teacher’s answers are analyzed by descriptive qualitative. The results showed that teachers’ ability to design creative products limited to creative ideas and scientists; but it has non-integrated mathematical reasoning and technical design in designing an applicable product. The teacher’s negative belief in scientific creativity and their learning are the main factors of creating barriers. Other factors are limited study time, laboratory equipment, teaching materials, and the amount of material structure.
Biodegradable Mulch Based on Cellulose of Cornhusk with Addition Anti UV-Tinuvin
Authors: Hernawan F A , Syamani F A , Kurniati M
Published: June 2020

Plastics generally cause global-scale problems because they cannot be degraded into the environment and causing a build-up of plastic waste. Biodegradable plastic material can be an alternative to solve the problem because of its nature which is easily naturally degraded by microorganisms. One of the natural wastes that can be utilized to become fillers in plastic mulch so it is more easily degraded is cornhusk because its utilization is still limited and cornhusk has high cellulose content. In this study, the extraction of cellulose was carried out on cornhusk to obtain cellulose by the alkali method. There was a decreased in hemicellulose and lignin levels, which indicated that the extraction process was quite successful. Then in the process of making biodegradable mulch films, Tinuvin P was added as an anti-UV agent and oleic acid was carried out as plasticizer and with several variations. The results show that the addition of anti-UV agent P and addition of oleic acid reduces the mechanical properties of biodegradable mulch and can control the rate of degradation of the biodegradable mulch film.
The Effect of Addition Fe3O4on the rGO/Fe3O4Composite on Glucose Biosensor Performance
Authors: Mufida R Y , Kusumawati D H
Published: June 2020

The development of composites as biosensors is very broad, one of them is biosensors to absorb glucose. Composite materials characteristic as biosensors must fulfill the criteria including nanomaterials that have magnetic properties, electrical conductivity, and good catalytic properties. One of the composites that fulfill those criteria is rGO/Fe3O4. By varying the addition of Fe3O4in the making of rGO/Fe3O4composites, the composition of composites that have the most effective performance in absorbing glucose will be known. The variation of Fe3O4addition in this study is 0.1 gram - 0.5 gram, with 0.5 gram of RGO. The characteristics of rGO, Fe3O4and the rGO/Fe3O4composite are known by the XRD and FTIR analysed based on relevant previous studies. Glucose biosensor absorbance was tested by UV-Vis, a composite with mass variations of Fe3O40.1 gram, 0.2 gram, 0.3 gram, 0.4 gram, and 0.5 gram. Peak absorption of the composite of 0.1 gram Fe3O4shows high glucose concentration, it can be seen that the composite does not absorb glucose properly. The 0.2 gram composite has the lowest absorption peak so that this composite is the best biosensor. Because with the addition of Fe3O4mass shows the peak absorption is also higher. So, composites have a maximum limit in absorbing glucose.
“Tempera-Tour”: Developing an Alternative Comic as Media Learning for Temperature and Heat Topics Through Traveling Story
Authors: Siswoyo S , Mustokoweni G , Muliyati D
Published: June 2020

This study aims to develop comics on the theory of temperature and heat by incorporating the traveling storyline in its delivery. Comics are designed to be used as physics learning media for class XI high school. This development consists of four stages, namely: define, design, develop, and disseminate. The defining phase is carried out a need’s analysis to determine the urgency of the additional physics learning media in the form of comics. The design stage is in the form of compiling the comic storyline. The storyline presented follows the comic elements as story media. The development phase was carried out, making comic sketches and validated by several experts. The last stage is the distribution of products spread to high school. Based on the results of the feasibility test, obtained an average percentage of achievements for material experts 86%, learning media experts 89%, literary experts 81.25%, and graphic-design experts 88.4%. The average overall value obtained shows that the quality of the physics comic score interpretation of the temperature and heat material is rated very well. Based on the feasibility test and the trial of this comic product, it is declared feasible to be used as a physics learning media.
The Development of Guided Inquiry Student Worksheet using Tracker Video Analysis for Kinematics Motion Topics
Authors: Muliyati D , Septiningrum A D , Ambarwulan D , Astra I M
Published: June 2020

This paper aims to describe the development of guided inquiry student worksheets using tracker video analysis for kinematics motion topics. This development is to facilitate students to do straight motion and parabolic practicum using a video analysis tracker with teacher guidance. It uses a six-step guided inquiry approach. The model of the research and development is Analysis, Design, Development, Implementation, and Evaluation (ADDIE). The samples of the implementation stage are 34 students, then grouping into nine groups. The results of the development research obtained worksheets on the material: horizontal motion, vertical upward motion, downward vertical motion, free-fall motion, and parabolic motion. This worksheet was validation by material experts, media experts, and learning experts. The result of validation is the product was very feasible or has fulfilled the requirements to use as learning media.
Developing Formative e-Assessment as a Stimulus to Improve the Quality of Mathematical Methods for Physics Learning Process
Authors: Pratiwi H Y , Ayu H D , Sujito  , Lestari N A
Published: June 2020

Assessment is an important component of learning, one of the factors that affects quality and learning outcomes is the quality of the assessment held in the learning process. Innovation that can be done to support assessment formative is to utilize Information and Communication Technologies (ICT). The aim of the research is to develop the formative e-assessment model, identify the needs of development and guidance to implement formative e-assessment model, arrange the model and guidance of formative e-assessment, and find out the beneficial of formative e-assessment towards mathematical method of physics learning. The development design used refers to the Research and Development Design of Borg & Gall which has been modified. The design consists of four phases; they are introduction study, model design, model developing, and model validation. The research involved several universities in East Java. The results gained from the validators of material expert were 3.32 and validator of media expert was 3.10; while the result of limited experiment was 3.27 and it was classified as good category.
Students’ Understanding of Physics in Science Process Skills using Inquiry-Link Maps: A Preliminary Study
Authors: Lestari N A , Dinata A K K , Dwikoranto  , Deta U A , Pratiwi H Y
Published: June 2020

The inquiry-link maps in learning physics can help students to improve their science process skills. Science process skills can be identified through students’ understanding of physics. This study aims to describe the profile of students’ understanding of physics and its relationship with science process skills through inquiry-link maps. The profile of students ‘understanding of physics is known based on the results of the students’ initial test scores on physics material which is also accompanied by filling out a questionnaire response. The results on students’ initial understanding of physics are shown in quantitative and qualitative data. Based on the results of the study, students have adequate specific knowledge of physics ability, especially on several material. Physics materials that are considered difficult is thermodynamics because the teacher does not give examples, and the student is never doing laboratory activities. The results show that students have difficulty in applying scientific methods which is one of the indicators in science process skills.
Factors Influencing the Level of Knowledge in Identifying Warning Signs of Cancer
Authors: Ismail I , Abd Razak N F , Jamalul J , Abdullah N A I , Ramle N S H
Published: June 2020

Cancer can be defined as an uncontrolled and unregulated growth of cell in human body and it can be diagnosed in all level of age, races and also both genders. High level of awareness and adequate knowledge of warning signs of cancer might have great impact in surviving the disease. A cross-sectional study was done to determine the level of knowledge in identifying warning signs of cancer among students in Universiti Teknologi MARA (UiTM) Kota Bharu Campus and to examine the factors that contribute significantly to the level of knowledge. There are 9 independent variables involved in this study; gender, CGPA, father’s education level, mother’s education level, family’s monthly income, health insurance status, family history of having cancer, BM, and age. The dependent variable in this study is level of knowledge in identifying warning signs of cancer where it is categorized into 0 and 1; 0 denoting low knowledge and 1 denoting high knowledge. The finding shows that most of the respondents have low level of knowledge (84.9%). Multiple logistic regression analysis was performed to identify the determinants of level of knowledge in identifying warning signs of cancer. Overall, there were two significant variables (family monthly income and family history of having cancer) found in logistic regression analysis. There are several recommendations highlighted in this study such as the strategies to communicate the warning signs of cancer to the public.
Measuring Users Concerns For Information Privacy
Authors: Anwar N , Mohamed Shuhidan S , Zaini M K
Published: June 2020

In this era, Internet and/or mobile users are openly disclosed, share and expose their personal data and information to viewers. Activities such as subscribe, purchase, register and/or access may lead users to do so. Ignoring the ‘terms of condition’ is a common thing done by the user due to certain factors. In understanding the reasons why users are easily share and expose their personal data while surfing and browsing the Internet and/or mobile applications, this study is formed to investigate the determinants, i.e. concern for information privacy (CFIP) towards the intention to give information. Findings from the first research objective shows that it is quite important to understand, concern and aware on the information privacy. Meanwhile for second research objective three (3) out of four (4) hypotheses found to be significant. The results provided here will help other researchers and policy makers to understand in deep the reasons behind of it. In addition, the study also intended to provides insight for practitioners in establishing or improving any existing policy. Apart from that, the study is also highlighting the important to practise information privacy in meeting an individual concerns.
Carbohydrate Intakes and Preferences among Endurance Athletes in Universiti Teknologi MARA Selangor
Authors: Mohd Noh N S , Shuhaimi F A , Nor N Md
Published: June 2020

Endurance sport have risen and expanded over the year and nutrient particularly carbohydrate are believed to be the key factor to achieve the optimum performance. Limited information are available in Malaysia regarding the nutrition status of this particular athletes especially those among the students. The aim of this study is to determine the dietary intake and carbohydrate preferences of the athletes and to compare with the establish sport nutrition guideline. A total of 40 endurance athletes from Universiti Teknologi MARA Selangor were recruited in this study. Dietary intake of the athletes were assessed using Food Frequency Questionnaire and 3 -days diet record. Overall, carbohydrate intake per day was 464.79 ± 155.39 g and 386.31 ± 93.12 g for male and female athletes, respectively. Report on carbohydrate intake as per sport nutrition guidelines showed that male and female athlete have a mean carbohydrate intake of 6.06 ± 2.07 g/kg body weight and 5.73 ± 1.99 g/kg body weight, respectively, which were in the minimum range of recommendation. The main source of carbohydrate of the athletes derive from white rice. Meanwhile, the intake of protein and fat for male were 1.77 ± 0.94 g/kg body weight and 61.78 ± 32.64 g, respectively. Meanwhile, the protein and fat intake in female athlete were 1.94 ± 0.82 g/kg body weight and 74.51 ± 36.92 g, respectively. Remarkably, the intake of fat and fluid were recorded lower than recommendation. It is proven that the nutrient intake of the athletes does not meet the optimum sport nutrition recommendation
Students’ Perception in Blended Learning among Science and Technology Cluster Students
Authors: Rahman N Abdul , Arifin N , Manaf M , Ahmad M , Mohd Zin N A , Jamaludin M
Published: June 2020

Higher education institutions promote flexible learning environment to students in accomplishing learning objectives. By allowing ‘everywhere and anytime’ environment to students for learning plus technical infrastructure, they may have more opportunities to learn and practice their knowledge for achieving success. The purpose of the study is to document and give some elaboration on their experience in blended learning environment. By obtaining result form survey from 139 students with science and technology background, this study highlights three elements of blended learning namely achievement in learning, improvement of learning skill and adoption of social presence. There is a positive perception in blended learning environment among students of Computer Science. According to the results, blended learning in i-Learn platform offers great flexibility, which allows students to have easy access to allows learning at any time and place.
Web-Based Nutrition Education for Patients with Hypertension: A Conceptual Framework
Authors: Ab Hamid M R , Md Noor H , Buhari S S , Md Nor N
Published: June 2020

Nutrition education is important for patients with hypertension to reduce the adverse outcomes of the disease. A web-based approach has the potential for improving the quality of nutrition education. This paper describes a conceptual framework for the development of a web-based nutrition education system for patients with hypertension, also known as the Web-based Approach on the dietary management and physical activity to control hypertension (W.A.t.C.H) in Malaysia. The website aims to improve the nutrition knowledge and promote behavioural changes among patients. The Theory of Planned Behaviours, Self-Determination theory and Cognitive Load Theory will be used in the development of the website. The website will (1) serve as a portable resource for patients on nutritional education for blood pressure control; (2) supplement the hypertension clinical care by providing an online educational tool for patient. This paper illustrates how learning and multimedia theories can be used in the development of the website.
Exploring the Relationship between Self-efficacy and Mathematics Performance in Integral Calculus among Applied Science University Students
Authors: Nuruddin M , Noor C N , Zainan Abidin A W
Published: June 2020

Perceived self-efficacy refers to the people’s beliefs in their capabilities to exert control over their own functioning and over events that affect their live. Accessing student self-efficacy can provide educator with additional insight of students’ subsequent performance. Hence, this study examined the relationship between self-efficacy and mathematics performance among Applied Science university students. The sample consisted of first year Applied Science university students from two different backgrounds; matriculation and diploma. Students were given two sets of survey questionnaire which were developed by the authors to measure the students’ self-efficacy and their ability to solve the integral calculus questions. The questions were divided into four domains namely concept of calculus, translation from concept to formula, techniques of integration and recognition of functions. The findings from this study did not fully provide evidence to support the view that positive self-efficacy beliefs in mathematics increase mathematics performance since there was no significant impact on what the students perceived and what they actually scored. However, this study found out that if the aspects of self-efficacy were to be examined individually to see if there was any significant impact towards mathematics performance, it can be seen that Techniques of integration (r = 0.243, p < 0.05) and Recognition of function (r = 0.205, p < 0.05) were significant and positively related to mathematics performance to some extent. The study also showed that self–efficacy is correlated with all of the aspects of performance which the correlations values are as follows: Concept in Calculus (r = 0.730, p < 0.01), Translation from Concept to Formula (r = 0.705, p < 0.01), Techniques of integration (r = 0.852, p < 0.01) and Recognition of function (r = 0.773, p < 0.01). The results of this study can help the educators to evaluate and improve the effectiveness of the current mathematics teaching.
Clustering for Items Distribution Network
Authors: Yudhanegara M R , Indratno S W , Sari R R K N
Published: June 2020

The distribution network can be represented as a simple graph. In this case, the delivery destination location is represented as a vertex, while the road passed is represented as an arc. The main concept of network clustering or graph clustering is that high connected vertices can be in the same cluster, while low connected vertices can be in different clusters. The method for network clustering in this paper is the Markov cluster. The purpose of items distribution network clustering i.e. to facilitate the company in item delivery based on road conditions.
Measurement of readiness in IT adoption among SMEs manufacturing industry in Jakarta
Authors: Sani Asrul , Rahman T.K.A , Budiyantara Agus , Doharma Rouly
Published: June 2020

The development of SMEs, especially those based on the manufacturing industry, is highly developed along with the significant market demand. The increasingly important information technology in SMEs will have an impact on increasing productivity, marketing, and efficiency. In this research, measurement of readiness level in the adoption of information technology (IT) will be carried out used to explore the level IT application readiness and to examine factors which influences its application along with the amount of index value determined by the threshold. The survey was conducted on stakeholders of Small and Medium Enterprises in Jakarta, which was done using interview and questionnaire techniques with a response (n = 68). Interviews and questionnaires are conducted on policymakers in SMEs companies so that the data obtained will provide accurate results. Data will be processed using partial least squares structural equation modelling (PLS-SEM) software. The results shown by the majority of respondents (54.4%) answered that the percentage of the level of readiness of SMEs towards IT adoption was more than 50%. Meanwhile, 31.7% of respondents stated that for a percentage of more than 75%. Respondents taken were only about five regions of Jakarta. Also, more comprehensive results will be used as a reference when respondent data will cover all regions of Java. From the results of this study can be used for further research related to the level of readiness for IT adoption in SMEs
Directed bipartite Hypergraph: Representation of data edits for constraint-based data cleaning
Authors: Zuhayeni Madjida Wa Ode , Takdir  , Puji Widodo Sulisetyo
Published: June 2020

Constraint-based data cleaning captures data violations to a set of constraints called data quality constraints. Data edits is one of constraint type besides integrity constraint that used for checking data inconsistencies which come from census or survey questionnaire (questionnaire schema). Data edits contain some variables and describe their relationship using AND and OR operator. The relationship needs to be represented in a structure that can find the best data repair solution. Graph is a generic structure to represent a relationship. In previous studies, hypergraph is used as a solution to represent variable relationships of the violated integrity constraint. Such solution is not efficient for data edits. Hypergraph cannot show the relationship between data edits as a whole. This can trigger more new errors. In this paper, we use graph representation namely directed bipartite hypergraph to illustrate the relationship between overall data edits. Nodes in the graph not only contain variable information of data edits, but also the data edits itself. This makes the interaction between data edits can be seen as a basis to prevent new errors. We also introduce four parameters as determining the level of variables that are priorities for improvement. The goal is to minimize the number of variables must be fixed, but can eliminate all violations that occur. We evaluate the quality of the proposed structure by simulating data repairing. The results show that 100% of the data has decreased violations. 84% of them can be repaired to zero violations.
The influence of the blended learning model supports e-learning (Edmodo) on student learning achievements the main material of buffer solutions in SMA 1 Banyudono academic year 2018
Authors: Nur ‘Aini Afifah , Hastuti Budi , Utami Budi
Published: June 2020

Blended Learning research model supported by e-Learning (edmodo) on student learning achievement and suitability of the blended learning model with the basic material supporting class XI MIPA in SMA 1 Banyudono Academic Year 2018/2019. This research is a quantitative study using quasi-experimental (Quasi Experimental Review). The data in this study are the learning achievement data of knowledge, attitudes and skills analyzed using the Independent Sample t-Test. The research sample consisted of two classes. Data collection techniques with test and nonest, pretest-posttest, questionnaire, observation, and documentation. The results showed that there was the influence of the blended learning model supported by e-learning (edmodo) on the learning achievement of the knowledge aspects and attitude aspects of the subject matter of the buffer solution. Whereas the skills aspect was not influenced on the e-learning (edmodo) blended learning model. It could be seen from the price of significance on the results of the Independent sample t-test (aspects of skills and attitudes) and the crucial wallis test (aspects of knowledge). The significance of the aspect of knowledge is 0,000 <0,05, the attitude aspect is 0,021 <0,05 and the skill aspect is 0,699> 0,05. The compatibility of the learning model with the material gives the experimental class higher than the control class. This could be seen from the average achievement of the experimental knowledge aspect (77.03) higher than the control class (70).
Development of embedded system in monitoring temperature and humidity as supporting smart farm
Authors: Puspasari Fitri , Fahrurrozi Imam , Oktiawati Unan Yusmaniar , Satya Trias Prima
Published: June 2020

Enabling the environment is an important factor in developing livestock business. The temperature and humidity of the cage are very important aspects to consider. Inappropriate livestock cage temperature can affect livestock productivity and survival. The purpose of this research is to design a web-based temperature and humidity monitoring system, in the form of automatic regulation and measurement. In this research, embedded systems techniques are applied to build temperature monitoring systems by combining sensors and microcontrollers. Monitoring the temperature and humidity conditions of the enclosure is done through a sensor network and the classification of conditions is carried out by an intelligent system that produces web-based decision support. The sensor used to measure temperature and humidity in this monitoring system is the DHT22 sensor, while the controller is used NodeMCU. The results of this study are measurement data can be displayed on web pages that can be accessed in realtime. NodeMCU devices can be used as controllers for temperature and humidity data and successfully send data to a database that can be displayed on the website interface. Monitoring humidity and temperature is a great and easy way to record and track any changes which can help decision-makers to prepare or follow suit procedures to prevent conditions that can cause livestock.
The teachers’ obstacles in implementing technology in mathematics learning classes in the digital era
Authors: Muhazir A , Retnawati H
Published: June 2020

The use of technology in mathematics teaching-learning has been proven to be successful in increasing students’ motivation, interests, and achievement. However, the use of technology in learning mathematics in answering the challenges of the digital era has not been successfully implemented as a whole with only 19.22% at the junior high school level and even at the senior high school level only 16.23%. Teacher professionalism is not enough to guarantee the implementation of technology in mathematics education. Unequal facilities and infrastructure are also obstacles. This research aims to describe the obstacles of mathematics teachers in applying technology in mathematics teaching-learning. This research is a case study research with the subject of 12 mathematics teachers in South Kalimantan, Indonesia. Data were collected using questionnaires and interviews. Data analysis was done using the Miles & Huberman model, with the step of data reduction, data display, and conclusion. The results showed that the obstacles of mathematics teachers in the digital era in implementing technology in mathematics teaching-learning included: (1) mathematics learning material that was less suitable for the use of technology; (2) facilities, infrastructure, and support provided by schools were inadequate for the use of technology in teaching-learning; (3) the level of teacher skills in using technology in mathematics teaching-learning. Some factors that influenced the emergence of these obstacles include (1) teachers assessments and point of views of the effectiveness in using technology in teaching-learning mathematics in the classroom; (2) unequal access to education services between schools in cities and villages; and (3) lack of training and information provided to the teachers about the use of technology in mathematics classes. Those obstacles obtained were common obstacles experienced by the teachers in South Kalimantan, Indonesia, both in urban and rural environments.
Can blended learning replace conventional learning in terms of mastery learning and cognitive attainment
Authors: Fatkhulloh Shoffan , Haryanto
Published: June 2020

Blended learning is a pedagogical approach that combines face-to-face learning with online learning. Blended learning is considered as the next conventional learning. So that education in Indonesia is not left behind, the issue of blended learning should have received an appropriate response because in many developed countries many have implemented blended learning as their conventional learning. This research aims to describe whether blended learning is able to replace face-to-face learning as conventional learning today. To describe this, this research was reviewed based on mastery learning and cognitive attainment. Mastery learning is used as a basis for reviewing because education standards in Indonesia use the standard “thorough learning”. The cognitive attainment is used as a basis for reviewing because cognitive levels influence the achievement of critical thinking skills where these skills are one aspect of the basic skills of the 21st century that students must master in this century. This research uses a quasi-experimental method with a non-equivalent design. The population of this research is students of favorite Islamic private elementary schools in Mojokerto. This research concludes that blended learning is able to replace face-to-face learning and is able to influence students’ cognitive attainment.
The profile of students’ data literacy at SMA Negeri 1 Karanganyar
Authors: Ambarwati Aniks , Sarwanto  , Sukarmin
Published: June 2020

The new 4.0 industry has a significant impact on the 21st-century advanced development. The development of science and technology has experienced rapid changes and progress. Students must prepare themselves with various competencies to face the challenges that arise in global competition. One of the competencies that must be owned by the 21st-century skills of students is data literacy. Data literacy is the ability of individuals to collect, process, evaluate, and apply data. The purpose of this study was to find out the literacy profile of senior high school students, especially in physics learning. The data collection technique in this study was to provide tests to several students in SMA Negeri 1 Karanganyar. The data obtained analyzed using descriptive statistical analysis. Based on the tests results obtained an average score of high school student’s data literacy 55.72%. The results received described the student data literacy profile, in general, were still in the medium category.
The development of asessment higher order thinking skills (HOTS) through online based application
Authors: Yunita Luki , Bahriah Evi Sapinatul
Published: June 2020

This research is aimed to produce the instruments of the assessment on the content testing of the chemistry Higher Order Thinking Skills (HOTS) through online-based application which is intended for the pre-service chemistry teachers. To find out the data, the authors utilize (Research and Development) methodology. Furthermore, the testing of the assessment instruments on the content testing of the Chemistry Higher Order Thinking Skills through an online-based application is conducted at the department of chemistry education, Syarif Hidayatullah State Islamic University of Jakarta. What is more, the authors investigate in-depth the instrument of the assessment on the content testing of the chemistry Higher Order Thinking Skills (HOTS) through online-based application in order to obtain the data of the research. Then, all of the data gathered will be validated by two chemistry experts, and examined to seventy pre-service Chemistry teachers at the Chemistry Education Department Syarif Hidayatullah State Islamic University of Jakarta. Importantly, some instruments in collecting the data are provided, including the observation sheets, the structured-interview sheets, experts’ validation sheets, as well as the students’ questionnaires. Moreover, the data gained from the students’ responses will be tabulated to look for its percentages. After that, all of the data will be analyzed descriptively. Therefore, based on the result, it seems to indicate that the pre-service teachers’ show a good response on the assessment of the content testing of the chemistry Higher Order Thinking Skills (HOTS) through online-based application with the average percentage reaches into 85.91 %.