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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) JRST (Jurnal Riset Sains dan Teknologi) JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI Journal of Physics and Its Applications Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Ilmu Fisika Jurnal Pendidikan Fisika dan Teknologi JUPE : Jurnal Pendidikan Mandala Jurnal Kumparan Fisika JURNAL PENDIDIKAN SAINS SOSIAL DAN AGAMA SPRINTER: Jurnal Ilmu Olahraga Jurnal Ilmu Pendidikan Dasar Indonesia
Ruben Cornelius Siagian
Physics Departement, Faculty Of Mathematics And Natural Science, Universitas Negeri Medan, Medan, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Other

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PENGARUH ANXIETY TERHADAP PRESTASI ATLET BULUTANGKIS PELITA JAYA LAMONGAN Ruben Cornelius Siagian
JUPE : Jurnal Pendidikan Mandala Vol 7, No 2 (2022)
Publisher : Lembaga Penelitian dan Pendidikan Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jupe.v7i2.3489

Abstract

Kecemasan merupakan gangguan mental yang dapat dialami oleh setiap manusia. Kecemasan akan datang saat mendapatkan tekanan dari lingkungan sekitar. Atlet mendapatkan tekanan dari internal maupun eksternal pada saat bertanding. Metode yang digunakan adalah metode kuantitatif dengan menggunakan rancangan penelitian korelasi. Penelitian ini akan menghubungkan variabel kecemasan dengan variabel konsentrasi. Populasi penelitian ini adalah atlet bulutangkis Pelita Jaya Lamongan, dengan menggunakan sampel acak berjumlah 20 atlet. Teknik pengumpulan data pada penelitian ini dilakukan dengan memberikan skala yang diisi oleh sampel penelitian. Skala yang dibagikan kepada sampel penelitian terdiri atas dua skala yakni, skala kecemasan dan skala konsentrasi (grid concentration). Dimana salah satu dari kedua skala tersebut menggunakan model skala likert. Teknik analisis data yang digunakan oleh peneliti menggunakan teknik analisis dengan menggunakan excel 2013 for windows. Atlet mampu bermain dengan tenang, dengan strategi, taktik, serta teknik yang baik maka mampu mendapatkan hasil yang baik untuk prestasinya. Pelatih dan atlet olahraga harus mengetahui mengetahui teori yang berhubungan dengan kecemasan sehingga dapat mencari dan menemukan solusi yang dibutuhkan untuk mencapai penampilan yang terbaik. Kecemasan tidak dapat dihilangkan tetapi bagaimana cara mengatasi dan meminimalisirnya adalah hal terpenting yangperlu untuk diperhatikan. Kesimpulan pertama sesuai dengan hasil penelitian sebelumnya yang menunjukkan adanya hubungan antara kecemasan dan konsentrasi pada atlet bulutangkis di Pelita Jaya Lamongan. Namun, kesimpulan kedua tidak sepenuhnya sesuai dengan asumsi teoritis yang memprediksi bahwa semakin tinggi kecemasan seseorang, semakin rendah konsentrasinya. Penelitian lebih lanjut perlu dilakukan terkait kecemasan dan tingkat konsentrasi seseorang yang berhubungan langsung dengan psikologis seseorang. Perbedaan karakteristik situasi dalam pertandingan dan lingkungan biasa menyebabkan adanya kemungkinan perbedaan dalam penjelasan perilaku dengan konteks lingkungan biasa dan lingkungan pertandingan.
IMPLEMENTASI PEMBELAJARAN PJOK DI WAKTU PANDEMI COVID-19 Ruben Cornelius Siagian
JUPE : Jurnal Pendidikan Mandala Vol 7, No 2 (2022)
Publisher : Lembaga Penelitian dan Pendidikan Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jupe.v7i2.3491

Abstract

Pembelajaran yang dulu dapat dilakukan secara kolektif di satu tempat sekaligus bertatap muka, kini berubah dilakukan secara daring atau virtual disebabkan adanya pandemi covid-19. Belajar lebih mudah serta dapat berliterasi digital dan seharusnya menjadi lebih kaya informasi jika dibandingkan hanya bertatap muka seperti sebelumnya. Namun hal ini tidak demikian, guru dan siswa tidak siap dalam pembelajaran daring. Hal ini dibuktikan dengan banyaknya keluhan baik dari guru dan juga siswa. Hampir semua mata pelajaran dijalankan dengan jalur PJJ. Pemanfaatan media yang digunakan juga belum disesuaikan dngan kemajuan dan kecanggihan teknologi. Penelitian ini menggunakan penelitian kajian pustaka dari artikel jurnal. Pendekatan penelitian menggunakan kualitatif deskriptif. Pengambilan sampel yaitu sebanyak 3 artikel dengan topik pembelajaran PJOK masa pandemi di daerah Indonesia. Teknik pengumpulan data menggunakan cara pencarian dengan kriteria artikel yang telah dijurnalkan dan terpublikasi. Teknik analisis data menggunakan pemilihan artikel yang telah diunduh, selanjutnya ditampilkan serta menjelaskan hasil penelitian serta penetapan kesimpulan. Berdasarkan kajian kepustakaan di atas dapat disimpulkan bahwa pemelajaran PJOK dapat dilaksanakan dan memiliki potensi untuk terus dilakukan pada masa covid-19 saat ini. Langkah pemelajaran PJOK PJJ dapat dengan memerikan pemelajaran proyek seperti pemanfaatan digital aplikasi video atau melalui aplikasi pembelajaran yang lain.
Learning Physical Education, Sports, and Early Childhood Health Based on Educational Games Ruben Cornelius Siagian; Rizky Tri Wibowo; Dimas Imam Fadhilah; Putri Rahmadani Lubis; Ursulla Duti Oktria Simamora; M Abdurrahman Ridwan Isnan; Christeven Silalahi
Jurnal Ilmu Pendidikan Dasar Indonesia Vol. 1 No. 3 (2022): JUNI
Publisher : Educational and Talent Development Center of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/judikdas.v1i3.460

Abstract

Physical education is an inseparable part of national education which aims to develop the abilities of students through physical activities. Physical education planning is carried out carefully to meet the behavioral development, growth, and needs of each child. Physical education not only develops psychomotor abilities, but also develops students' cognitive and affective abilities. Physical education learning starts early to start organic, motor, intellectual and emotional development. This study uses a descriptive qualitative approach by collecting and downloading an article or journal that conducts research directly in the field. The population in this study, which was taken from a journal, involved 3 teachers and 35 early childhood children, which was intended to obtain research results from the implementers and recipients of learning. Data collection techniques used open interviews, observation and documentation during the data collection process. The data analysis technique uses data reduction, data presentation and conclusion drawing which aims to provide research results that are in accordance with the reality in the field. Early childhood physical education currently shows complex problems, in terms of learning, facilities, social conditions and government policies. However, the purpose of education must be implemented properly to develop cognitive, affective and psychomotor abilities of early childhood. Nature-based educational activities are very suitable to be applied because apart from being able to practice corners during the pandemic, PAUD students can play comfortably and have fun.
Basis teoritis dari metode grid yang ditumpangkan Sudirman. T.P Lumbangaol; Yoel Octobe Purba; Juliaster Marbun; Ruben Cornelius Siagian; Kevin William Andri Siahaan
Jurnal Pendidikan, Sains Sosial, dan Agama Vol. 8 No. 1 (2022): Jurnal Pendidikan, Sains Sosial, dan Agama
Publisher : STABN RADEN WIJAYA WONOGIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53565/pssa.v8i1.485

Abstract

Masalah pemodelan sifat anisotropik yang benar dari bahan komposit sampai hari ini tidak sepenuhnya terungkap. Ini memaksa para insinyur dan ilmuwan untuk menyederhanakan deskripsi parameter fisik dan mekanik untuk menentukan perilaku mekanik padatan yang dapat dideformasi. Ini terutama berlaku untuk viskositas. Akibatnya dalam kompleks analisis perangkat lunak elemen hingga, sifat-sifat ini dimodelkan secara turun-temurun fungsi yang sebanding dengan tensor elastisitas awal, yang dalam beberapa kasus bukan asumsi yang benar. Adapun untuk menghilangkan kekurangan tersebut berdasarkan metode elemen hingga, maka metode grid yang ditumpangkan diusulkan, yang memungkinkan untuk memodelkan sifat fisik dan mekanik, khususnya viskoelastik, dengan mempertimbangkan tingkat anisotropi. Metode ini memungkinkan untuk memecahkan sejumlah masalah dalam teori viskoelastisitas anisotropik, menghasilkan diperoleh hasil yang benar. Makalah ini menyajikan pembenaran teoretis untuk metode ini, yang didasarkan pada: pertimbangan total energi fungsional dari benda cacat, untuk masalah statis dan dinamis linier teori elastisitas dan viskoelastisitas. Pendekatan terhadap masalah ini menetapkan aturan untuk memperoleh parameter tegangan-regangan keadaan benda yang dapat dideformasi sesuai dengan kekhasan metode kisi-kisi yang ditumpangkan dan skenario yang mungkin diidentifikasi aplikasinya.
Analysis of Coulomb Stress Changes in Aceh Earthquake on Sibayak Volcano Goldberd Harmuda Duva Sinaga; Agoez Loeqman; Ruben Cornelius Siagian; Mardame Pangihutan Sinaga
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 8 No 2 (2022): July-December
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v8i2.4409

Abstract

Based on geological conditions, Indonesia is located between the Indo-Australian plate, the Eurasian plate, and the Pacific plate, making Indonesia prone to tectonic earthquakes. However, since the big earthquake that occurred in Aceh on December 26, 2004, the geological conditions in Sumatra have undergone significant changes marked by stressful situations in the western to southern regions of Sumatra, especially on Sibayak Volcano. This study used data from BMKG and Global CMT, which included magnitude (Mw), depth, earthquake coordinates (longitude and latitude), type of earthquake, strike, dip, and rake. From the analysis using Coulomb 3.3, the highest coulomb stress value of Sibayak Volcano was obtained in 2015 with an average change in coulomb stress of 0.235 bar, shear 0.1909 bar, normal 0.1106 bar. However, the lowest coulomb stress value occurs in 2021 with a moderate shift in coulomb stress of 0.0593 bar, shear 0.0251, normal 0.0849 bar.
Non-Linear Regresion And Bisection Method Numerical Analysis of Humidity And Temperature Relationships Lulut Alfaris; Ruben Cornelius Siagian; Budiman Nasution; Goldberd Harmuda Duva Sinaga; Indah Indah
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 8 No 2 (2022): July-December
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v8i2.4394

Abstract

This study aims to analyze the correlation of temperature and humidity based on climatological data from Kuningan, West Java province, Indonesia, using non-linear regression and numerical analysis using the bisection method. In studying the education curriculum in Indonesia, most of them have studied linear regression, but only within certain limits, namely linear and multiple. It is still rare for students to use non-linear regression in their analysis. This paper will explain the analysis using non-linear regression as a source of data and equations in numerical analysis so that it can be applied in the context of the numerical bisection method. As for data processing and numerical analysis, Microsoft Excel is used. The authors combined the two variables in the non-linear analysis and used geometric equations for the numerical quotient analysis. The author displays the results of numerical graphs and real-time data obtained from the source "Data access viewer NASA."
Solution And Visualization 3D Plane Inverse Kinematics Method Wanri Lumbanraja; Lulut Alfaris; Budiman Nasution; Ruben Cornelius Siagian; Arip Nurahman
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Vol. 19 No. 2 (2022): Sainmatika : Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v19i2.9421

Abstract

The hyper-redundant type of robot is a type of robot that in carrying out its duties in the field of kinematics its degrees of freedom exceed the required minimum degrees. The advantage will be increased capability in operation and performance, if the degrees of freedom are excessive, even in unorganized and complex systems and environments. Algebraic approach method in inverse kinematics algorithm analysis can use; analytic algebra, jacobian basis, analytic KI, exponential multiplication, grobner, and conformal geometry. Iterative approach method in inverse kinematics algorithm analysis can use; genetic algorithm, fuzzy logic, ANFIS, and evolutionary algorithm. The geometric approach method in the inverse kinematics algorithm analysis can use; capital method. The purpose of this study is to analyze a virtual 2 arm robot, which will use axis manipulation in three dimensions using an inverse kinematics solution, using a geometric approach. How to step along on the z axis by rotating and using the reverse kinematics solution to the desired location. The visualization results will be repeated so as to ensure the effectiveness of the algorithm. As for this algorithm will provide a single solution, and this algorithm will prevent and reduce singularities if the link is lower.
Study Review of the Speed of Light in Space-Time for STEM Student Lulut Alfaris; Ruben Cornelius Siagian; Eko Pramesti Sumarto
Jurnal Penelitian Pendidikan IPA Vol 9 No 2 (2023): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i2.2757

Abstract

The author of this article aims to review the theory of relativity and its implications for physics education by using visual aids and a programming approach. The article will cover the concept of the speed of light in space-time in the context of relativity, and provide illustrations that explain the relationships in the context of general relativity. The focus of the article will be to introduce students to complex concepts and encourage their interest in the topic. The author reports success in teaching the basic concept of the speed of light in space-time to both elementary STEM students and high school students. While the theory of relativity has been taught at the secondary school level in some education systems, there is a lack of research on the effectiveness of using visual aids and a programming approach to enhance students' understanding of the concept. This article aims to fill the gap by evaluating the impact of this approach on students' understanding of the theory of relativity
Basic Mechanics of Lagrange and Hamilton as Reference for STEM Students Budiman Nasution; Lulut Alfaris; Ruben Cornelius Siagian
Jurnal Penelitian Pendidikan IPA Vol 9 No 2 (2023): February
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i2.2920

Abstract

This paper discusses the use of Lagrangian and Hamiltonian dynamics as alternative approaches for understanding the motion of objects in classical mechanics. These approaches, which are based on different mathematical techniques, can provide a deeper understanding of the principles of classical mechanics and the motion of objects, but may not be covered in high school physics curricula or undergraduate STEM courses. The review paper approach is used to combine information from a variety of sources, and the material is conceptualized to aid reader understanding. These advanced topics may be of interest to advanced high school students who are interested in exploring topics beyond the high school physics curriculum, and can be studied independently by those with a strong foundation in classical mechanics and familiarity with advanced mathematical concepts.
Statistical Data Retrieval Technique in Astronomy Computational Physics Ruben Cornelius Siagian; Pandu Pribadi; Goldberd Harmuda Duva Sinaga; Arip Nurahman; Budiman Nasution
JATISI (Jurnal Teknik Informatika dan Sistem Informasi) Vol 10 No 1 (2023): JATISI (Jurnal Teknik Informatika dan Sistem Informasi)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat (LPPM) STMIK Global Informatika MDP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35957/jatisi.v10i1.4712

Abstract

Computational astronomy is a very important branch in today's era, where physicists or researchers can use computers to process statistics in astronomical physics. researchers can process abstract data from raw data and can convert data into data visualizations. Computational physics astronomy is a sophisticated and well-established method, this branch of science can provide and process data, solve complex problems, and is very helpful for statisticians and computer scientists. Astronomical physicists have many problems, among others; there is a problem that is hierarchical, and complex, so that this paper will provide a basis for methods for optimizing methods in processing statistical data on physics. The author's hope is that astronomical physicists can perform an important and effective processing of astronomical data optimally and effectively.
Co-Authors Agoez Loeqman Aldi Cahya Muhammad Arip Nurahman Arip Nurahman Arip Nurahman Arip Nurahman Budiman Nasution Christeven Silalahi Dimas Imam Fadhilah Eko Pramesti Sumarto Eko Pramesti Sumarto Gendewa Tunas Rancak Gendewa Tunas Rancak Ghulab Nabi Ahmad Goldbert Harmuda Duva Sinaga Indah Indah Juliaster Marbun Kevin William Andri Siahaan Lulut Alfaris Lumbangaol, Sudirman T. P M Abdurrahman Ridwan Isnan Nazish Laeiq Pandu Pribadi Putri Rahmadani Lubis Rafika Ardilla Rizky Tri Wibowo Sinaga, Mardame Pangihutan Ukta Indra Nyuswantoro Ukta Indra Nyuswantoro Ukta Indra Nyuswantoro Ursulla Duti Oktria Simamora Wanri Lumbanraja William Haganta Ginting Winsyahputra Ritonga Yoel Octobe Purba