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All Journal Jurnal Pembangunan Pendidikan: Fondasi dan Aplikasi Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) Jurnal Teknik Kimia USU NUMERICAL (Jurnal Matematika dan Pendidikan Matematika) BAREKENG: Jurnal Ilmu Matematika dan Terapan JTAM (Jurnal Teori dan Aplikasi Matematika) Kelola: Journal of Islamic Education Management JUARA : Jurnal Olahraga Musamus Journal of Physical Education and Sport (MJPES) Jurnal Review Pendidikan dan Pengajaran (JRPP) Health Information : Jurnal Penelitian Jurnal Abdimas Madani dan Lestari (JAMALI) Indonesian Journal of Education and Mathematical Science Jurnal Manajemen Pelayanan Hotel Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Education and Teaching Learning JiTEKH (Jurnal Ilmiah Teknologi Harapan) Jurnal Manajemen dan Organisasi Review (MANOR) Jurnal Ilmiah Wahana Pendidikan MANAJERIAL: Jurnal Inovasi Manajemen dan Supervisi Pendidikan Jurnal Pengabdian Masyarakat (ABDIRA) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Indonesian Journal of Research and Educational Review (IJRER) JUrnal Riset Ilmu Pendidikan Jurnal Teknik Kimia USU JYRS: Journal of Youth Research and Studies Jurnal Offshore: Oil, Production Facilities, and Renewable Energy OMEGA: Jurnal Keilmuan Pendidikan Matematika Jurnal Ilmiah Swara MaNajemen (Swara Mahasiswa Manajemen) Ininnawa: Jurnal Pengabdian Masyarakat Kohesi: Jurnal Sains dan Teknologi Jurnal Riset Kajian Teknologi dan Lingkungan Seminar Nasional Riset dan Teknologi (SEMNAS RISTEK) Jurnal Pemikiran dan Pengembangan Pembelajaran JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Pengabdiaan Masyarakat Larisma MAFEBIS: Jurnal Manajemen, Akuntansi dan Bisnis
Irvan Irvan
Department of Chemical Engineering, University of North Sumatra, Medan
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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SISTEM INFORMASI PEMBAYARAN IURAN KEAMANAN DAN KEBERSIHAN PADA PERUMAHAN BERBASIS WEBSITE MENGGUNAKAN METODE DESIGN THINKING: Array Siregar, Wandani; Irvan, Irvan; Rahayu, Eka
JiTEKH Vol. 8 No. 2 (2020): September 2020
Publisher : Universitas Harapan Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35447/jitekh.v8i2.204

Abstract

Housing is a basic human need and needs to be fostered and developed for the survival and enhancement of people's lives and livelihoods and settlements cannot be seen as mere suggestions of needs, but more than that it is a process of settling in creating a living space to socialize themselves and reveal their identity. The development method in building a Security and Cleanliness Contribution Payment Information System in Menteng Indah Housing Based on Website based on the theory of design thinking methods. Design thinking is a method used to solve problems encountered by gathering lots of ideas in brainstorming sessions using a user-centered approach. The research test is to produce a Fee Payment System in Website-Based Menteng Indah Housing, with the application of this system will facilitate citizens and security in the process of paying fees
SIMPLIFIED FORMULAS FOR SOME BESSEL FUNCTIONS AND THEIR APPLICATIONS IN EXTENDED SURFACE HEAT TRANSFER Irvan, Irvan; Zahedi, Zahedi; Agus, Anjar; Suparni, Sarmin; Amin, Harahap
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 16 No 2 (2022): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.512 KB) | DOI: 10.30598/barekengvol16iss2pp507-514

Abstract

Bessel functions find many applications in Physics and Engineering fields. Some of these applications are in the analysis of extended surface heat transfer where the cross-sections vary. Tables of various kinds of Bessel functions are available in most handbooks of mathematics. However, the use of tables is not always convenient, particularly for applications where many values must be computed. In the applications of Bessel functions in extended surface heat transfer, graphs are also available to provide quick evaluations of the values needed. However, reading these graphs always needs interpolation; this will be cumbersome and time-consuming if there are many readings to be taken. Mathematical formulas for Bessel functions are available but they are usually complicated. Software to calculate values of Bessel functions is also available. Excel, Maple, and Mathematica can also be used to compute the values of Bessel functions. A user can write a program for an application that involves Bessel functions. However, the use of Bessel functions in Excel is limited while Maple and Mathematica are expensive commercial software. In this paper, formulas for Bessel functions of and are simplified with adequate accuracy that can be used to easily compute values needed in the extended surface heat transfer analysis. It is found that errors for and are relatively small (maximum errors are 0.004% and 0.003%, respectively) in the range of 0.05 to 3.75 while the maximum error for is 3.678% for the same range. However, the maximum error for is reduced to 0.166 if the range is from 0.25 to 3.75.
Perancangan Sistem Aplikasi Berbasis Java Desktop Pada Laundry Kiloan Express Irvan, Irvan; Hermawan, Rudi; Puspita, Fitriyah
Semnas Ristek (Seminar Nasional Riset dan Inovasi Teknologi) Vol 5, No 1 (2021): SEMNAS RISTEK 2021
Publisher : Universitas Indraprasta PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/semnasristek.v5i1.5208

Abstract

Komputer merupakan alat yang membantu pekerjaan manusia khususnya pengolahan data menjadi informasi terutama didalam bidang jasa, Laundry Kiloan Express adalah jenis usaha mencuci baju yang didalamnya terdapat proses administrasi seperti mencatat pelanggan, jumlah pembayaran customer dan barang yang telah diambil customer, seiring berkembang zaman proses catat mencatat secara manual dapat memperlambat prosesadministrasi, maka dari itu sistem terkomputerisasi lebih mempermudah dalam hal proses administrasi tersebut. Rumusan masalah yang kami temukan adalah bagaimana membuat aplikasi jasa yang data mempercepat proses pendataan pelanggan, pendataan cucian serta perhitungan transaksi pada laundry kiloan express. Adapun tujuan dari sistem ini adalah untuk mempermudah proses pencatatan data pelanggan, data baju dan datapembayaran yang agar lebih efisien dengan menggunakan komputer, membuat laporan dengan cepat kepada pemilik usaha. Metode penelitian yang digunakan adalah dengan grounded research dimana metode ini mengharuskan membuat sebuah perancangan sistem informasi berdasarkan fakta dan data dilapangan. Sistem informasi laundry kiloan express ini dibuat menggunakan bahasa pemrograman java dengan Mysql sebagaidatabase. Hasil dari penelitian ini diharapkan dapat membantu petugas laundry kiloan dalam hal proses pendataan baju, pembayaran, dan proses pembuatan laporan kepada pemilik usaha laundry kiloan.
The Impact of Highest Rally Training on Improving Drive Shot Ability in Squash Games Irvan, Irvan; Syafruddin, Muhammad Akbar; Sufitriyono, Sufitriyono
ETDC: Indonesian Journal of Research and Educational Review Vol. 3 No. 2 (2024): March
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v3i2.1511

Abstract

The goal of this research is to ascertain how high-level rally training affects students' efforts to improve their forehand drive and hitting ability in squash at Makassar State University's Faculty of Sports Science. The sampling technique we used was a random selection of 33 male students. We employed the t-test to analyze the data. The data analysis results indicate that the mean difference between the average pre-test and post-test scores is -13.879, and the sig. 2-tailed is 0.000 or <0.05. Therefore, the highest level of rally training impacts efforts to enhance students' squash forehand driveability, as indicated by the mean difference between the pre-test and post-test scores.
Pre-Service Teacher of PJOK: The Effect of Box Skip Training on Leg Muscle Power Andryawan, Andryawan; Suwardi, Suwardi; Irvan, Irvan; Hudain, Muh. Adnan; Nurussyariah, Nurussyariah
ETDC: Indonesian Journal of Research and Educational Review Vol. 3 No. 3 (2024): June
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v3i3.1872

Abstract

This study aims to ascertain the impact of the Box Skip Exercise on the leg muscle power of pre-service teachers at STKIP YPUP Makassar. This study employs an experimental design, specifically a quasi-experimental design. In this study, the population and sample were the pre-service teachers of STKIP YPUP Makassar, with a sample size of 30 people divided into two treatment groups and a control group. We used the t-test to test the research data. The research data that was tested with the t-test shows that the treatment group's data has a calculated T value that is higher than the T table with a value of 9.291>1.753. The significance value of 0.00 falls below 0.05, indicating that box skip exercise has a significant impact on the leg muscle power of physical education pre-service teachers. In contrast, the data from the control group revealed a calculated T value of 3.674, which exceeded the T table by 1.753. Additionally, the significance value of 0.00 was less than 0.05, indicating that the treatment group had a greater influence than the control group. Based on the above data, we can conclude that the treatment group exerted a greater influence than the control group in enhancing the leg muscle power of physical education pre-service teachers at STKIP YPUP Makassar.
Application of Integrals in Calculating Ball Volume using GeoGebra Irvan, Irvan
Indonesian Journal of Education and Mathematical Science Vol 5, No 1 (2024)
Publisher : Universitas Muhammadiyah Sumatera Utara (UMSU)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/ijems.v5i1.18086

Abstract

Integral Calculus is a form of mathematics learning that can be applied in everyday life. One application is in calculating the volume of rotating objects. In this research, we combine integral concepts in calculus with the numerical and visualization capabilities provided by GeoGebra software. The aim of this research is to apply the concept of integral calculus in calculating the volume of a rotating object in the form of a ball. The method used is a qualitative descriptive method that uses literature studies to search for formulas and to construct spherical shapes to determine their volume. The experimental method is used to find manual calculation results on real objects. The research results show that the integral concept used in calculating the volume of a ball using software assistance in the form of the GeoGebra application can produce quite accurate results.
Analysis of Algebra Structure Implementation Input-Output Applications in the Economic Field Kamaruddin, Kamaruddin; Panggabean, Ellis Mardiana; Irvan, Irvan
Journal Of Education And Teaching Learning (JETL) Vol. 5 No. 3 (2023): Journal of Education and Teaching Learning (JETL)
Publisher : CV. Pusdikra Mitra Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51178/jetl.v5i3.1530

Abstract

Mathematicsi isi ai sciencei thati is usefuli ini iall fields, and is also useful in many other sciences. Mathematical models are useful, for example, in ieconomics. One of them uses matrix theory and Gauss-Jordan ielimination in iinput-output ianalysis ito studyi the inter-sectoral iinterconnectedness iof the economy. This study describes the input-output ianalysis. This isi thei implementationi ofi matrixi materiali wherei each sector usesi as inputi the output produced by the output of other sectors, on the other hand the output produced is also the input of other sectors. This research is a qualitative research (library research) with a literary approach. Data collection techniques were carried out by reviewing various books, journals, articles, information or sources deemed appropriate and relevant to the research. Content analysis is used as a data analysis technique whose purpose is to maintain research accuracy and prevent errors in data sources. This is followed by a literature review and a literature review. The results of this study are the transaction matrix, value added ratio of economic activity, technological input-output coefficient matrix, interdependence coefficient matrix and finali demandi usingi the iGauss-Jordani eliminationi method.
The Effectiveness of Think Talk Write (TTW) Learning in Improving Students’ Mathematical Communication Ability Kamaruddin, Kamaruddin; Irvan, Irvan; Nasution, Marah Doly
Journal Of Education And Teaching Learning (JETL) Vol. 5 No. 3 (2023): Journal of Education and Teaching Learning (JETL)
Publisher : CV. Pusdikra Mitra Jaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51178/jetl.v5i3.1541

Abstract

Learning mathematics is useful for students to be able to think critically, count, reason, and be able to analyze a problem. Not only that learning mathematics has an impact on improving mathematical communication skills related to everyday life. The purpose of this study was to test the effectiveness of using the Think Talk Write (TTW) learning model in improving students' mathematical communication skills at the junior high school level. This research took place at SMP Muhammadiyah 01 Medan. The population of this study was all students in class IX and the research sample was students in class IX-T1 at SMP Muhammadiyah 1 Medan, TA 2022/2023. This study used a quantitative pre-experiment design one-group pretest-posttest method. The test of mathematical communication skills is the instrument of this research. The research data was tested for its hypothesis using the paired sample t-test with the normality assumption test. While testing the effectiveness of increasing their mathematical communication skills using the N-Gain test.
THE INFLUENCE OF GIVING COMPENSATION ON EMPLOYEE PERFORMANCE PRODUCTIVITY AT ARIFA MART Zaky, O K M; Irvan, Irvan; Amelia Sari Br.S . Pane, Lola; Balqis, Putri; Nur Ilham, Rico
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 2 No. 1 (2022): DECEMBER
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijset.v2i1.111

Abstract

Over time, micro, small and medium enterprises or cooperatives will develop rapidly in the future as they are today, many people are willing to open micro, small and medium enterprises. From several places we visited, we got one of the micros, small and medium enterprises, precisely in Blang Pulo, called ARIFA MART. The ARIFA MART business itself has been established since 2017 which is located in Blang Pulo. The name ARIFA MART is also taken from the names of people, namely Arif, Anis, Fatlan. The number of Arifa Mart employees is 25 people, starting from cashiers, goods carriers, and outside guards. With 25 employees, Arifa Mart does 2 work shifts morning – afternoon and afternoon – evening. Arifa Mart has been running its business for about 6 years now, with never a few visitors, Arifa Mart is also well known among the public or students. The method used in this research is quantitative. The results of this study, it can be concluded that more compensation will be given if the employee can work with high loyalty.
Pengetahuan Cedera Olahraga Pada Siswa MTsN Barito Selatan Kalimantan Tengah Pasaribu, Martua; Irvan, Irvan; Amir, Atmam
JURNAL PEMIKIRAN DAN PENGEMBANGAN PEMBELAJARAN Vol. 4 No. 1 (2022): JURNAL PEMIKIRAN DAN PENGEMBANGAN PEMBELAJARAN (JP-3)
Publisher : RAYHAN INTERMEDIA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Setiap pelaku olahraga memiliki resiko mengalami cedera saat melakukan aktivitas fisik seperti pada pendidikan jasmani, olahraga prestasi maupun olahraga kebugaran. Setiap lulusan dan siswa MTsN Barsel diharapkan memiliki kemampuan untuk dapat mencegah dan menangani cedera yang terjadi. Tujuan dalam penelitian ini adalah untuk mengetahui tingkat pengetahuan cedera olahraga siswa MTsN Barsel yang terkait dengan macam- macam cedera olahraga, lokasi cedera, faktor-faktor penyebab terjadinya cedera olahraga, penanganan pada cedera olahraga dan upaya pencegahan terjadinya cedera olahraga. Metode penelitian menggunakan teknik survey dengan menyebarkan angket dan wawancara yang diberikan kepada Siswa-siswi MTsN Barsel. Populasi dan sampel penelitian ini adalah Siswa-siswi MTsN Barsel dari kelas VII s.d IX tahun ajaran 2021/2022, pengambilan sampel menggunakan random sampling. Hasil dari penelitian ini adalah tingkat pengetahuan cedera olahraga siswa kelas IX 35% katagori tinggi sekali, 62% katagori tinggi dan 3% katagori sedang. Tingkat pengetahuan cedera olahraga siswa kelas VIII 5% katagori tinggi sekali, 86% katagori tinggi, dan 9% katagori sedang; Tingkat pengetahuan siswa kelas VII 61% katagori tinggi dan 39% katagori sedang.. Kesimpulan dari penelitian ini adalah tingkat pengetahuan cedera olahraga siswa MTsN Barito Selatan dalam katagori tinggi dan dalam mengimplementasikan penanganan cedera olahraga belum maksimal
Co-Authors Abdurrahman, Muhammad Faiz Achmad Fariz Agus Sutriawan Agus, Anjar Ahmad Yamin Al Fath, Muhammad Thoriq Alamsyah, Vandria Amelia Sari Br.S . Pane, Lola amin, harahap Amir, Atmam Andryawan, Andryawan Awal, Asri Azis, Zainal Baehaqi Bambang Trisakti Bambang Trisakti Cut Novaliani Hasbi Dian Anggraini Dj, Arifhan Ady Edi Syahputra EKA RAHAYU Eka Supriatna Ellis Mardiana Panggabean Elwina Widiarti Fachruddin, Aisyah Fachry Abda El Rahman Farida Hanum fatimah Fatimah Fona, Zahra Hadiansyah, Muhammad Hamzah, Alimin Hari Tiarasti Hasyim, Muhammad Qasash Heru Setiawan, Heru Setiawan Hiroyuki Daimon Hudain, Muh. Adnan Ieke Wulan Ayu Indra Surya, Indra Irma Suraya Iskandar Iskandar Jahrir, Andi Sahrul Jannah, Anistazkia Miftahul Jhon Almer S. Pasaribu Johan Wahyudi, Johan Juniansyah, Muhammad Fadhillah Kamaruddin Kamaruddin Khoiruddin Matondang Koichi Fujie Koro, Suriana Kpalet, Petrus Luri Adriani Maisharoh, Maisharoh Marah Doly Nasution Marbun, Daniel S Michael Vincent Mochamad Syamsiro Muh Wildan Muhammad Akbar Syafruddin Muhammad Faisal Muhammad Hendra S Ginting Muhammad Ivan Miftahul Aziz Muhammad Noviansyah Aridito Muhammad Sigit Cahyono Muhammadong Munir Yusuf, Munir Muslihuddin, Rahmat Nadir, Muh Natsir, Rodja Abdul Nency Extise Putri Nur Indah Atifah Anwar Nuralam Syamsuddin Nurussyariah, Nurussyariah Nurwijayanti Pamungkas, Sugeng Adi Pasaribu, Martua Permata Mhardela Puspita, Fitriyah Putri Balqis, Putri R. Rusli Raihan Dimas Muharam Ramadani, Zein Rasyid, Nashfin Nazli Reviana Revitasari Rico Nur Ilham Rifa Turaina Risna Mira Bella Saragih Riyono, Eko Rizky, Muhammad Rafly Robi Rendra Tribuana Rosdanelli Hasibuan Rudi Hermawan Sabhara, Robby Sidabutar, Rivaldi Sinabang, Juwita Lestari Sinaga, Mersi Suriani Siregar, Wandani Siswadi Siswadi Sitepu, Lusti Angelica Sitepu, Rafael Aginta Steven , Evan Sufitriyono, Sufitriyono Suparni, Sarmin Suwardi Suwardi Syafri Hariansah Syafutra, Wahyu Pramudya T. Husaini Takwim, Mardi Tambun, Rondang Tanjung, Dian Fitria Taslim Taslim Taslim Tri Afrianty Ulfa Annisa Lubis Umar Umar Victor G Simanjuntak Wardan, Khusnul Yohannes Tandean Yoichi Atsuta Yoshimasa Tomiuchi Zahedi . Zaky, O K M