Articles
Private Military Companies’ Role in International Armed Conflicts: A Case Study of Wagner Group's Role in Escalation of the Russia-Ukraine Conflict
Bustami, Sirwan Yazid;
Zulkarnain, Zulkarnain
Journal of International Relations on Energy Affairs Vol 5 No 2 (2024)
Publisher : Department of International Relations Universitas Pertamina
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DOI: 10.51413/jisea.Vol5.Iss2.2024.187-209
This research aims to analyze the role of Wagner Group as a private military company in the Russia-Ukraine conflict which is getting deteriorating and has led to a greater conflict escalation. It uses a qualitative approach with an analytical descriptive method. Data was collected through literature review and analyzed through several stages, namely data reduction, data presentation, and conclusion. Data reduction is done by reviewing the collected data to be selected according to research topic. Furthermore, data presentation stage was carried out in form of a narrative. Finally, conclusion is drawn based on elaboration of concept of private military companies and theory of principal–agent. According to research result, it indicates that there is an increase in the intensity of the Russia-Ukraine conflict due to the interference of the Wagner Group. This proves that the principal-agent relationship between Russia and Wagner Group suffers from agency slack. As a consequence, it results in a negative reciprocal relationship, which causes the escalation of conflict to be maintained and provides its own benefits for Wagner Group.
Spiritual Pilgrimage Through Virtual Reality (VR): Transforming Islamic Religious Education in Madrasahs
Aryati, Aziza;
Jamrizal, Jamrizal;
Anwar, Khairul;
Zulkarnain, Zulkarnain;
M, Zaharuddin;
Firman, Arham Junaidi
Ta'dib Vol 27, No 2 (2024)
Publisher : Universitas Islam Negeri Mahmud Yunus Batusangkar
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DOI: 10.31958/jt.v27i2.12350
The use of virtual reality (VR) technology in Islamic Religious Education learning in schools has become an interesting topic to improve students’ understanding of religious concepts. This study explores the impact of virtual reality (VR) technology in simulating religious pilgrimage on students’ understanding of religious concepts and teachers’ perceptions. The research conducted used a case study design with a qualitative approach. The research setting was purposively selected at Madrasah Tsanawiyah Negeri (MTsN) 1 Kota Bengkulu. The subjects in this study were Islamic Religious Education teachers and students. The data in this study were collected through observation, interviews, and documentation. Data validity testing in this study was carried out using the triangulation test method. Data analysis in this study adopted a descriptive approach involving several stages, namely data condensation, data presentation, and data conclusion drawing and verification. The results showed: that first, there was a positive acceptance from students towards using Virtual Reality (VR) technology in simulating religious pilgrimage, with many students feeling an enchanting and immersive experience. Second, VR plays a significant role in improving students’ understanding of religious concepts, especially in understanding the historical context and spiritual meaning of holy places. Third, Islamic religious education teachers have a positive perception of the use of VR in learning. The teachers see VR as a tool for increasing student engagement and expanding the learning experience.
PENGARUH DEBIT TERHADAP UNJUK KERJA ALAT PENUKAR KALOR DAN PENURUNAN SUHU RUANGAN
Mirmanto, Mirmanto;
Sayoga, I Made Adi;
Zulkarnain, Zulkarnain
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 6, No 1 (2016): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram
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DOI: 10.29303/dtm.v6i1.18
ABSTRACTDue to population growth, industry advance and rapid development, fresh and comfortable air may be difficult to get. Conditioning the air to get comfort environment may be a basic demand for people, but the prices of the device and its operation for this purpose are expensive. This research tries to solve this problem but it is just only to know the capability of the heat exchanger to transfer/ absorb heat and is not to cool the room to be below the ambient temperature. The working fluid used was clean water and the heat exchangers employed were parallel and serpentine which were made of copper pipes with a diameter of 1/4 inch and 1/2 inch (for the header). The volumetric flow rates used were 300 ml/minutes, 400 ml/minutes and 500 ml/minutes. While the heat that should be absorbed by the water from the room is 50 W, 100 W and 150 W. The results show that the effect of volumetric flow rate on heat exchanger performance and room temperature is insignificant. From the pressure drop results, the parallel pipe heat exchanger has lower pressure drops while the serpentine has higher pressure drops.
The Influence of Mathematical Thinking Ability with Modified MOORE Method on Learning Outcomes of Basic Mathematic II Chemical Education Students
Heleni, Susda;
Zulkarnain, Zulkarnain
Journal of Educational Sciences Vol 2. No. 2. July 2018
Publisher : FKIP-Universitas Riau
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DOI: 10.31258/jes.2.2.p.33-41
Developing the ability of absolute thinking is needed inmathematic class where the subject has a characteristic as a branch ofscience which the object of study is abstract-natured and related with apattern of thinking. Basic mathematics is one of the courses that can developstudent’s ability to think. The results acquired by the students are still notmaximized; this is because the students struggle to develop their ownknowledge to form concepts. Student’s activities in the learning process areonly skill-natured in solving problems. One of the learning methods that canbe implemented is the Modified Moore method. This research aims todiscover the effects of mathematical thinking capabilities with the ModifiedMoore Method towards the learning achievement of Basic Mathematic II ofChemistry study program from the FKIP of Universitas Riau in the evensemester of 2013/2014 academic year. The form of this research is a quasiexperimentalresearch. The experiment design used in this research is theSingle Group Pretest/Posttest Design which includes Quasi ExperimentalDesign without control group. The population in this research is the studentsof Chemistry study program from the FKIP of Universitas Riau in the evensemester of 2013/2014 academic year. The sample of this research is allstudents of Chemistry study program from the FKIP of Universitas Riau inthe even semester of 2013/2014 academic year consisting 36 peoples. Thesample is obtained through purposive sampling technique. Based on dataanalysis using t test on mathematical thinking capabilities by applyingmodified Moore Method, it was found that students scores during post testis better than pre-test. The influences of mathematical thinking capabilitieswith modified Moore Method of the results learning mathematics basic IIChemistry Education in second semester academic year 2013/2014 is equalto 98,85%. It can be concluded that there is an influence on the mathematicalthinking capabilities by applying Modified Moore Method towards thestudents learning achievement of Basic Mathematic II of Chemistry studyprogram from the FKIP of Universitas Riau in the even semester of2013/2014 academic year.
Application of Cooperative Learning Models of Think Pair Shere Type to Improve Student Mathematics Learning Outcomes
Saputra, Andri;
Zulkarnain, Zulkarnain;
Saragih, Sehatta
Journal of Educational Sciences Vol 3. No. 2. May 2019
Publisher : FKIP-Universitas Riau
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DOI: 10.31258/jes.3.2.p.237-248
The low mathematics learning outcomes can be an indicator of student difficulty in learning mathematics. This study aims to analyze the influence of the application of the cooperative learning model Think Pair Share (TPS) type to the results of mathematics learning. This research used quasi-experimental research with sampling using stratified techniques and random sampling. The population was seventh grade students at SMP 17 Pekanbaru, SMP 12Pekanbaru, dan SMP 36 Pekanbaru. The instrument of this research was a daily test on the quadrilateral and triangle material to see student learning outcomes before being given treatment and after being given treatment. Statistical analysis was performed by Normality, Homogeneity Test, Independent Sample t-test, One Path Anova test, Two Path Anova Test. From the results of the collation test results obtained that p = 0.4425 and p = 0.4005, Ho is accepted, so there is no difference between the experimental class and the control class as well as the high school there is no difference, but the students' mathematics learning outcomes are reviewed from the level there are differences in the middle and lower schools. Generally, TPS learning is good at medium and low schools because in the learning process students still want to share knowledge with other students.
Development of Mathematics Learning Tools in the Context of Riau Malay Culture to Improve Students Mathematical Problem Solving Ability
Rianti, Resmi;
Saragih, Sehatta;
Zulkarnain, Zulkarnain
Journal of Educational Sciences Vol 4. No. 1. January 2020
Publisher : FKIP-Universitas Riau
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DOI: 10.31258/jes.4.1.p.73-82
This research was motivated by the lack of learning devices that are considered to be able to train students mathematical problem solving abilities. The purpose of this study was to develop mathematical learning tools that meet the valid, practical, and effective requirements to improve the mathematical problem solving abilities of students in grade VIII SMP on flat side space. The development model used was the 4D model. Based on the results of the validation data analysis, it was concluded that the learning device developed was valid. The results of the syllabus validation were 80.56%, RPP 81.43%, LKPD 87.34%, pretest questions 78.94%, posttest questions 79.86%. This learning tool fulfills the practical requirements in large group trials with an average performance result of 93.06% and an average questionnaire response of students 91.21%. The use of effective learning tools has improved the student learning outcomes. Development of learning tools can significantly improve students mathematical problem solving abilities at a significant level of 0,000 with α =0.05. This shows that the learning tools that was developedalready meet the valid, practical, and effective requirements and can improve students' mathematical problem solving abilities.
The Effect of SSCS Learning Model on the Mathematical Problem Solving Ability of Junior High School Students, Kampar Regency
Syafri, Muhammad;
Zulkarnain, Zulkarnain;
Maimunah, Maimunah
Journal of Educational Sciences Vol 4. No. 2. April 2020
Publisher : FKIP-Universitas Riau
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DOI: 10.31258/jes.4.2.p.309-317
Problem solving ability is a very important ability possessed by students in solving school mathematics problems. The purpose of this study is to determine the mathematical problem solving ability of students who use the Search, Solve, Create and Share (SSCS) learning model and the students who study with conventional learning. This research was a quasi-experimental study with a non equivalent control group design. The subjects in this study were all Kampar Junior High School students. The analysis technique used was the One-Way Anova Test and Two-Way Anova Test. The results showed the mathematical problem solving ability of students who learned to use the SSCS model was better than students who learned to use conventional learning models. However, there is no interaction observed between SSCS learning model and students mathematical problem solving ability (KPMM) level on students' mathematical problem solving abilities in Kampar Regency
Improving Students Mathematical Understanding by Using Discovery Learning Models for Senior High School Students in Kampar District
Imayati, Imayati;
Kartini, Kartini;
Zulkarnain, Zulkarnain
Journal of Educational Sciences Vol 4. No. 2. April 2020
Publisher : FKIP-Universitas Riau
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DOI: 10.31258/jes.4.2.p.357-367
Mathematical understanding is a very important ability possessed by students in solving mathematical problems. The purpose of this study is to find out the improvement in students mathematical understanding using discovery learning models. This research was a quasi-experimental study with a non equivalent control group design. The samples in this study were SMAN 1 Bangkinang, SMAN 1 XIII Koto Kampar and SMAN 2 Koto Kampar Hulu taken by purposive sampling technique. The data analysis technique used was the t test, and the Mann-Whitney U test. The results showed an increase in mathematical understanding of students learning using discovery learning models is better than students learning to use conventional learning models at the top level of school, medium and as a whole, but at the lower level schools have not increased.
Development of Mathematics Learning Devices by Applying Problem Based Learning to Increase Students Mathematical Solving Skills of Class VII Junior High School
Fitria, Rahmi;
Hutapea, Nahor Murani;
Zulkarnain, Zulkarnain
Journal of Educational Sciences Vol 4. No. 2. April 2020
Publisher : FKIP-Universitas Riau
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DOI: 10.31258/jes.4.2.p.368-379
This research was motivated by the low ability of Mathematical Problem Solving (KPMM) of students. In order to improve KPMM, teachers can do designing the learning process. This study aims to develop mathematical learning tools that are valid, practical and effective. The development model used the Borg and Gall model. The research instrument consisted of syllabus validation sheets, lesson plane (RPP), student worksheet (LKPD), observability of implementation, student questionnaire responses and KPMM test instruments. The result shows the mathematics learning kit using the PBL model was already valid which is for the syllabus was 85.41%, RPP was 85.11%, LKPD was 88.67% and the test instrument was 81.71%. The learning kit fulfills the practicality requirements in large group trials with an average questionnaire of students responses of 91.99% and an average of 94.58%. Effective mathematics learning tools is to improve KPMM of students with student learning outcomes that is based on the achievement of KKM with the percentage of completeness reached is 88.24%. Development of learning tools can significantly improve students mathematical problem solving abilities at a significant level of P = 0,000 with α = 0.05. Thus, it can be concluded that the development of mathematics learning tools by applying problem based learning can improve students mathematical problem solving abilities.
Development of a Problem Based Learning Media to Build Mathematical Communication Capabilities Students of Class VIII Junior High School
Zahira, Hany;
Zulkarnain, Zulkarnain;
Yuanita, Putri
Journal of Educational Sciences Vol 4. No. 3. July 2020
Publisher : FKIP-Universitas Riau
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DOI: 10.31258/jes.4.3.p.487-500
This research was motivated by the difficulties of teachers in implementing the 2013 curriculum, especially in the preparation of learning tools. This research was aimed to develop a valid, practical and effective learning tool for VIII grade junior high school students. This type of research was Research and Development with a 4-D model. Data collection instruments in this study were validation sheets, practicality sheets and tests of mathematical communication skills. Data were analyzed using validation criteria, practicality and effectiveness tests. The results obtained from the device validation show that the RPP is valid and the LKPD is quite valid. The practicality test results of small groups and large groups obtained very practical criteria. The effectiveness test can be seen from the percentage of student KKM achievement that is equal to 92% meets the effective criteria and the average difference test (t test) is obtained that tcount> ttable, which is 16.976> 1.677 and the significance value is <0.05. These results indicate that the developed learning tools are effective in improving students mathematical communication skills.