bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of assesment instruments to measure quality of MOOC-Platform in engineering mathematics 1 course
Authors: Yuniwati I , Yustita A D , Hardiyanti S A , Suardinata I W 
Published: July 2020

AbstractIndustry Revolutionary Era 4.0 requires changes in the organization of learning. Learning is implemented without any concept of time and space. Engineering Mathematics 1 Course has developed MOOC Platform. The aim of this research is to develop assesment instrument and to measure quality of the platform. This assesment instrument is developed by using Plomp Model. Plomp Model consists of five phases, they are; the design phase; the construction phase; test, evaluation, and revision phase; the implementation phase. There are 20 items in this assesment instrument. The 20 items were devided in three indicators. Validation has done by 3 experts. Then the instruments were gived to 100 students. Results from this research consist of 8 items which are valid and reliabel. Value of reliability is questionable.
Performance assessment of geometry mathematical representation ability viewed from student interest
Authors: Masrukan  , Elmagustilla S R 
Published: July 2020

Abstract
This research aimed to test whether learning with cooperative Jigsaw material geometry with performance assessment achieve mastery learning, test whether the ability of the mathematical representation of students with cooperative learning model Jigsaw material geometry with the assessment of performance is better than the ability of the representation of the students on the model of Discovery Learning, a description of the ability of the mathematical representation students on cooperative learning model Jigsaw with the assessment of student interest. This study is a mixed methods research. The subjects were students of class VIII-A one of junior high school in Kaliwungu, Kendal, Central Java. The data collection method using tests, questionnaires and interviews. The results show that: mathematical representation abilities of students who receive Jigsaw cooperative learning on geometry material with performance assessment fulfill the completeness of learning, mathematical representation abilities of students on geometry material in Jigsaw cooperative learning with performance assessments better than mathematical representation abilities of students on Discovery Learning, and descriptions of mathematical representation abilities students in the Jigsaw cooperative learning with performance assessments in terms of students interest learning that students with high learning interest are able to fulfill indicators of mathematical representation ability is very well, students with learning interest are able to fulfill indicators of mathematical representation ability well and students with low learning interest are less able to fulfill the indicators of mathematical representation ability.
Mathematics learning in elementary school that integrates with nation’s culture and integrity: a research trip in Japan
Authors: Suyitno H , Zaenuri  , Sugiharti E , Suyitno A , Baba T 
Published: July 2020

Abstract
Japan is a country that respects the Nation’s Culture and has Integrity that can be emulated. The problem was: What was the role of Elementary School teachers in increasing of Nation’s Culture and Integrity of their students through mathematics learning? The research method was a qualitative approach. Stages of activities: (1) Guided by a Partner Lecturer from IDEC of Hiroshima University, the UNNES research team conducted a class visit to the Elementary School (ES) in Hiroshima, namely Attached ES of Hiroshima. (2) Conducting observations, interviews, documentation studies, and FGD with the Elementary School teachers, IDEC students, and Partner Lecturer. The results: (1) Teachers and students have a high sense of Integrity in learning. (2) The teacher plays a role in preserving the cultural values of the Japanese nation. (3) Provision of mathematical problems associated with ethnomatematics and Japanese cultural products. Additional results: (1) In Japan applying the Problem Based Learning of learning model. (2) Teachers and students were very polite in getting along. (3) The condition of the school looks clean, healthy, and orderly.
Mathematical communication ability in knisley mathematics learning model
Authors: Dewi N R , Kamila N R , Mashuri  , Wijayanti K 
Published: July 2020

Abstract
The purpose of this research was to analyze the effectiveness of Knisley Mathematics Learning Model on students’ mathematical communication ability. Type of this research was quantitative research. The population in this research was grade VII students of one of junior high school in Semarang at 2018/2019 school year. With cluster random sampling technique, class VII H was obtained as an experimental class with Knisley Mathematics Learning Model and class VII G as a control class with Problem Based Learning models. Data collection includes tests of mathematical communication ability. Data were analyzed by classical completeness test, average difference test, and proportion test. The results showed that: (1) mathematical communication ability with Knisley Mathematics Learning Model had not yet reached classical completeness ie 59% while control class completeness was 36%, (2) the average achievement of students’ mathematical communication ability in the Knisley Mathematics Learning Model class was higher than the average achievement students’ mathematical communication in Problem Based Learning Model classes, and (3) the proportion of students’ mathematical communication ability achievement in the Knisley Mathematics Learning Model class is higher than the proportion of students’ mathematical communication ability achievement in Problem Based Learning Model classes.
Financial feasibility analysis of small industry of mathematical manipulative
Authors: Hidayah I , Masrukan  , Margunani  
Published: July 2020

Abstract
Learning Mathematics effortlessly and pleasantly is one of the strategies for children to master concepts, mathematical principles, and be capable of solving mathematical problems. In accordance with children mental development, the existence of manipulatives (concrete) is required by children to fulfill the above objectives. Along with technology development, manipulatives have also been developed to support students’ thinking abilities based on the demands of the ongoing curriculum. One of the objectives of this study was to conduct a financial feasibility analysis of commercial of mathematical manipulatives. Indicators of commercial feasibility used in this study were Break Event Point (BEP) analysis, Net Present Value (NPV), Internal Rate of Return (IRR), Net Benefit Cost Ratio (B / C Ratio), and Pay Back Period (PBP)). The steps in analyzing financial feasibility of manipulatives production business in this study were to calculate: (1) Fix Cost, (2) Variable Cost, (3) Production Cost, (4) Cost of Goods Manufactured and BEP Analysis (5) Investment Feasibility (IRR analysis, NPV, B / C Ratio, and PBP). The results of the analysis showed that the production of manipulatives in this study was feasible as a commercial business with BEP occurred when sales of manipulatives made from wood were 3 sets, Evafoam were 18 sets, and paper were 7 sets, NPV was 574,126,261 per year, IRR 50% > interest level at 12%, B / C ratio of 1.50247> 1 (profitable), and PBP occurred 2 years 11 months 29 days.
Students’ metacognition process in solving contextual problems based on gender
Authors: Alqurni S , Usodo B , Saputro D R S 
Published: July 2020

AbstractThe purpose of this study is to describe the student’s metacognition process in solving contextual problems based on gender. The subjects in this study consisted of one male student and one female student. The research location is in SMPN 23 Surakarta. The results of this study showed that at the planning stages, male student has been able to identify what is known and what is being asked and being able to choose and believing the strategy. In the monitoring stage, male student didn’t monitor the constructions or calculations and didn’t believe the truth. In evaluating stage, male student didn’t recheck the suitability of the results, didn’t recheck to the work steps and the calculation, didn’t believe the truth of the result. In the in planning stage, female student has been able to identify what was known and what was asked, but didn’t believe the strategy chosen. In the monitoring stage, female student didn’t monitor the step of completion and sustainability strategy that has been planned and didn’t believe the truth. At the evaluating stage, female student didn’t check the compatibility of the answers and didn’t recheck every work and didn’t believe in the correctness.
Fragmentation of thinking structure and its impact to students’ algebraic concept construction and problem solving
Authors: Usodo B , Aulia I I , Wulandari A N , Sutopo  , Setiawan R , Kurniawati I , Kuswardi Y 
Published: July 2020

Abstract
The term “fragmentation” is adopted from the term of data storage which is used inefficiently in a computer. The analogy of fragmentation in thinking process is inefficient phenomenon of information storage within the brain which obstructs the process of reconstructing and solving mathematical problems. This descriptive qualitative research aims to describe the fragmentation of thinking structure and its impact on concept construction and algebraic problem solving in Junior Highs School Students. The subjects consisted of 8th grade students of junior high school in Surakarta, Indonesia. Data of this research were collected using a task-based in-depth interview method. This research shows that the students have the following fragmentation of thinking structure: (1) pseudo construction, which occurs when the students’ answers seem right even though the reasoning are wrong, (2) hole construction, which occurs when students do not thoroughly understand the concepts of addition, multiplication, algebraic power forms, and mathematical problems-modelling, (3) mis-analogical thinking, which occurs when students consider an algebraic form to be the same as another algebraic form.
Fragmentation of thinking structure: concept construction and problem solving in geometry of junior high school students
Authors: Wulandari A N , Usodo B , Sutopo  , Setiawan R , Kurniawati I , Kuswardi Y , Aulia I I 
Published: July 2020

Abstract
Fragmentation is adopted from the term of inefficient data storage in a computer which is used to describe thinking fragmentation. The purpose of this study is to describe the fragmentation of geometrical concepts in junior high school classified into: hole construction, mis-connection, and mis-analogical construction. This study used descriptive qualitative research method with the subjects of 8th grade students in Surakarta. Data collection in this study was conducted by task-based interview method. Qualitative descriptive analysis through the stages of reduction, representation, and interpretation of data. Hole construction occurs when students do not construct concept completely (20%). Mis-connection occurs when students make mistake in making connections between concepts (40%). Mis-analogical construction occurs when students analogizing a concept with another concept in geometry which is a mistake (20%). From the analysis result, defragmentation of thinking structure in geometry can be done with scaffolding to bring up scheme, knite scheme, and improve of analogic thinking.
Development of learning innovations and MiC (mathematics in context) teaching materials to strengthen character friends of the earth
Authors: Dwidayati N , Zaenuri  
Published: July 2020

Abstract
The purpose of this study is to find a model for developing learning innovations and MiC teaching materials to strengthen the character of Sahabat Bumi. This study uses a quasi-experimental design. This research was conducted at MAN 1 Kudus Regency, Central Java Province. The study population was students of class X MAN 1 Kudus Regency. The research sample of 2 classes, taken by cluster-random-sampling technique. Experimental class students were taught using a PBL model with a MiC nuance, while control class students were taught using an expository model. Data were collected using tests, then analyzed descriptively and inferential statistics, using t-tests (independent samples t-test). The results showed (1) learning PBL nuanced MiC in the culture of the Holy community which can improve the ability of the amtematic representation and character of earth friends and (2) various forms of MiC in community culture related to mathematical concepts, so that it can be integrated in mathematics learning at the MA level
Cooperative learning model with ethnomathematics nuances to improve the love of local culture and ability of problem solving
Authors: Zaenuri  , Mukeriyanto  , Mulyono  
Published: July 2020

Abstract
This research aimed to find out the effectiveness of cooperative learning model with ethnomathematics nuances to improve local culture love and problem solving skill. This experimental research took population from VIII graders of SMP N 1 Gemawang, Temanggung in academic year 2018/2019. The sample was taken by random cluster sampling. The sample consisted of VIII D students as experimental group and VIII A as control group. The technique of collecting data consisted of observation, test, documentation, and questionnaire. The data was analyzed by z-test, independent t-test, and paired sample test. The findings showed that 28 students of experimental group reached the passing grade with average 77.5 while 28 students of control group reached the passing grade with average score 67.5. The hypothesis test showed that students taught by cooperative learning with ethnomathematics nuances classically reached the passing grade. The average obtained by experimental group was higher than the control group. Improvement of local culture love and problem solving skill of experimental group was better than control group.
Product assessment of mathematical representation ability viewed from student’s cognitif style
Authors: Masrukan  , Khairunnisa M 
Published: July 2020

Abstract
The mathematical representation ability in Junior High School 1 Bojong, Pekalongan, Central Java is still not optimal. For this reason, one of the methods that can be used to increase the ability of mathematical representation is cooperative learning type Two Stay Two Stray with product assessment. This research aims to obtain the effectiveness of the learning and analysing students’ mathematical representation abilities in terms of the reflective-impulsive cognitive style. This research used Mixed Methods with Explanatory Sequential Design. The population in this study was class VIII Junior High School 1 Bojong with research samples namely classes VIII A and VIII C which were selected using cluster sampling techniques. The subjects of this study were 4 students of class VIII C. Data collection techniques used include: observation, documentation, tests, and interviews. The results showed that: (1) Two Stay Two Stray learning with product assessment on the achievement of students’ mathematical representation abilities is effective, namely achieving classical completeness, the average mathematical representation ability of experimental class students is better than the control class, and there is a positive influence of style cognitive ability of students’ mathematical representation; (2) description of the ability of mathematical representation in terms of the reflective-impulsive cognitive style is as follows: a) reflective students are able to make geometry drawings well and translate images to clarify problems well, can make mathematical models well and solve them by involving mathematical expressions properly, and are able write concluding steps in a concise and clear manner and answer questions with words correctly;b) impulsive students are able to make geometry drawings well and translate images to clarify problems well, but sometimes make mistakes, can make mathematical models well and solve them by involving mathematical expressions correctly, but sometimes make mistakes, and are able to write steps a concise and clear solution and answer questions with words correctly, but sometimes make mistakes.
Teachers’ perceptions of their use of SPADA Brightspace: A professional education for in-service teacher context
Authors: Arifudin R , Abidin Z 
Published: July 2020

Abstract
The Directorate General of Learning and Student Affairs developed a program named professional education for in-service teachers. This program applies a hybrid learning model. The adoption of the hybrid learning model is considered appropriate in the industrial revolution 4.0 era. The teacher professional development program is no longer just a face-to-face course but also can be held in the online form. The online course has been performed using SPADA Brightspace, an e-learning system. This study aims to analyze teachers’ perceptions of using the SPADA Brightspace for online learning. A questionnaire survey technique was used for collecting data. The study results showed that the teachers have positive acceptance towards SPADA Brightspace. The teachers perceived the usefulness of SPADA Brightspace to support their online learning process in the in-service teacher professional development program (PPG DALJAB). The use of SPADA Brightspace increases the productivity of teachers because they can manage their time and control their own learning pace. The teachers are also easier to do knowledge sharing by active participation in online discussion forums.
Elena as a learning management system for supporting blended learning: Do students perceive Elena as useful?
Authors: Abidin Z , Rokhman F , Syaifudin A , Subagja M 
Published: July 2020

Abstract
The rapid development of technology in the fourth industrial revolution era has a significant role as a catalyst in developing, changing, and innovating in the field of education. Technology support for learning activities has become a necessity. Learning is not only performed face-to-face but can also be combined with online learning. The combination is called blended learning. Universitas Negeri Semarang (UNNES) as a higher education institution plays a role in creating a conducive academic environment so that the students’ learning process is effective and meaningful. UNNES developed Elena to facilitate blended learning. This study aims to explore students’ perceptions in their use of Elena as a learning support tool. Questionnaires consisted of 27 Likert-scale items were administered to students. A number of 435 students participated in this study. The results revealed that students perceived that the use of Elena to support their learning activities. The result of the study revealed that students perceived the usefulness of Elena to conduct different learning activities. The students also perceived that Elena as a learning management system had fulfilled their expectations.
Development of big data system of LP3 UNNES to support excellent service of LPTK on international reputation
Authors: Sugianto  , Ngabiyanto  , Prabowo A , Arfriandi A 
Published: July 2020

Abstract
Semarang State University, Education and Professional Development Institute (LP3) is a public service institution integrated with the Semarang State University Institute (UNNES). As a public service institution, LP3 is bound by regulations related to service satisfaction and service statistics as part of public accountability. In fact, as a public service institution overseeing services in the fields of PPL, PPG, MKU / MKDK, Career and Counselling, as well as Language and Training services, LP3 does not yet have a qualified DSS. An outline of the research method used in detail was explained as follows: Retrieve Data; Development System; Operation. Based on the results and discussion, it can be seen that building a LPS DSS requires quite a long time. The data in LP3 comes from inhomogeneous forms and varied sources. We conclude that the DSS of LP3 UNNES was going well. The website of data.lp3.unnes.ac.id can be utilized by the community as a decision support system.
Expert system to determine healthy food menu for heart and cardiovascular disease therapy
Authors: Wahyuni EG , Haritsah N 
Published: July 2020

Abstract
Cardiovascular disease is a disease caused by disorders of the heart and blood vessels. This disease is very dangerous for health because of the vital cardiovascular system. One of the most important organs associated with this disease is the heart. But there are still many people who are less concerned about their heart health. Therefore it takes a variety of therapies for the prevention or treatment for those already diagnosed with cardiovascular disease. Eating healthy foods is one of the best prevention or treatment. This expert system intends to help patients find out about heart disease. In addition, the system is also used to provide information about a healthy diet for the patient. This system design uses PHP programming language and is displayed in the form of a website. The patient or user may consult by entering personal data such as age, sex, height, weight, and symptoms suffered by using this system. The system will display possible illnesses and food menu recommendations.
The use of ADDIE model to re-create academic information systems to improve user satisfaction
Authors: Marzal J , Saputra E , Suratno T , Mauladi  , Saharudin  , Elisa E 
Published: July 2020

Abstract
User satisfaction is something that needs to be improved to realize the success of an information system. This study aims to redesign and recreate academic information systems in order to increase user satisfaction. The model used in application development is ADDIE because it has enough space in accommodating user participation, building trust in new applications through the data migration process, and changing culture through a limited set of applications. Meanwhile, user satisfaction is explored with the success of information systems model by DeLone and McLean (2003). The results of this study indicate that the ADDIE is an effective model in recreating academic information systems to increase user satisfaction. There is an increase in the influence of system quality, information quality, and service quality factors on user satisfaction from 65% in the legacy SIAKAD to 81% in the new SIAKAD. Meanwhile, user satisfaction significantly increased, namely an average of 17.7 in the legacy SIAKAD to 19.22 in the new SIAKAD.
Optical character recognition and long short-term memory neural network approach for book classification by librarians
Authors: Rosita YD , Sukmaningtyas YN 
Published: July 2020

Abstract
The book is classified by librarians that use Decimal Dewey Classification (DDS) System. It is used for cataloging and indexing books. DDC has three divisions, a ten, a hundred, and a thousand. The book subject is reflected in each division. Commonly, to know the book content, librarians read the book title. Then, they identify the book index in DDC system. Nevertheless, it requires more time. To read the book title, Optical Character Recognition (OCR) aids them to get the book title efficiently that convert the image of the book cover into the text-editable. Librarians use a web camera to scan the book cover, especially the book title area. There are three steps for pre-processing, the lowercase changing, the useless word removing, and tokenizing. To detect the book categories, Long Short-Term Memory Neural Network is good implemented in this research. It is almost used for text classification. In this research, It gives high performance that achieves more than 92% accurately.