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All Journal BERKALA FISIKA Jurnal Perikanan dan Kelautan Jurnal An-Nur Nature: National Academic Journal of Architecture Jurnal Kolaboratif Sains RISTEKDIK : Jurnal Bimbingan dan Konseling Journal of Education, Humaniora and Social Sciences (JEHSS) Afiasi : Jurnal Kesehatan Masyarakat Jurnal Pengabdian Masyarakat Khatulistiwa Jurnal Ilmu Manajemen Profitability Jurnal Ilmu Perbankan dan Keuangan Syariah CENDEKIA : Jurnal Ilmu Pengetahuan Journal of Rural and Urban Community Empowerment Kaunia: Integration and Interconnection of Islam and Science Journal International Journal of Community Service (IJCS) Room of Civil Society Development Innovative: Journal Of Social Science Research Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat Time in Physics: Journal for Theoretical, Instrumentation, Material-Molecular, and Education Physics At-Tajdid: Journal of Islamic Studies IIJSE AGROTEKBIS: Jurnal Ilmu Pertanian MERDEKA: Jurnal Ilmiah Multidisiplin Journal of Contemporary Issues in Elementary Education Jurnal Perikanan dan Kelautan Journal of Muhammadiyah’s Application Technology Jurnal Gladiator Room of Civil Social Development Jurnal Pendidikan Jasmani, Olahraga dan Kesehatan (Jp.jok)
Rifaldi Rifaldi, Rifaldi
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PENENTUAN NILAI SIGNAL TO NOISE RATIO PADA CITRA MAGNETIC RESONANCE IMAGING BERDASARKAN VARIASI TIME REPETITION TIME ECHO Arty, Nindy; Dewang, Syamsir; Astuty, Sri Dewi; Rifaldi, Rifaldi; Purwanto, Purwanto
BERKALA FISIKA Vol 27, No 1 (2024): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

Penelitian ini bertujuan untuk mengevaluasi citra fantom Sionil pesawat Magnetic Resonance Imaging (MRI) SIGNA Pioneer 3T berdasarkan variasi nilai Time Repetition (TR) dan Time Echo (TE). Parameter yang dianalisis berupa nilai citra obyek fantom berupa signal dan noise yang dibandingkan dengan daerah background sehingga diperoleh nilai signal-to-noise ratio (SNR). Fantom Sionil berbahan dasar dimethyl silicone fluid, gadolinium dan colorant. TR divariasikan pada 600, 1200, 1800, 2400, 3000, dan 3600 ms, sedangkan TE pada 60, 80, 100, dan 120 ms. Tebal irisan 4 mm serta jarak antar irisan 0,4 mm dari dasar fantom. Hasil yang diperoleh menunjukkan bahwa nilai TE dan TR untuk setiap pengamatan berbeda dengan nilai konfigurasi, tetapi menghasilkan nilai signal maupun noise yang relatif konstan pada setiap pengulangan dengan faktor yang sama. Untuk menghasilkan SNR terbaik, nilai TR yang lebih tinggi dan nilai TE yang lebih rendah harus dioptimalkan. Pemilihan TR yang cukup tinggi untuk pemulihan signal maksimal tanpa memperpanjang waktu pemindaian secara signifikan, dan TE yang cukup pendek untuk mengurangi noise dan degradasi signal.
PELATIHAN PEMBUATAN NUGGET IKAN NILA SALIN (Oreochromis niloticus) PADA MITRA IBU PKK DI KELURAHAN PANGKALAN SESAI KOTA DUMAI Yoswaty, Dessy; Rifaldi, Rifaldi; Mubarak, Mubarak; Elizal, Elizal
Journal of Rural and Urban Community Empowerment Vol. 4 No. 2 (2023): April
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

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Abstract

Permasalahan yang sering dihadapi oleh mitra ibu PKK (Pembinaan Kesejahteraan Keluarga) di Kelurahan Pangkalan Sesai Kota Dumai yaitu kesulitan dalam mencari alternatif usaha untuk diversifikasi produk olahan pangan. Akses informasi dan perkembangan teknologi masih terbatas, perlu informasi penting mengenai teknologi tepat guna yang sederhana dan diterapkan pada kehidupan sehari-hari. Kegiatan pelatihan dilakukan tentang pembuatan nugget ikan nila salin (Oreochromis niloticus). Tujuan kegiatan yaitu meningkatkan diversifikasi produk olahan ikan nila salin berupa nugget pada mitra ibu PKK. Manfaat kegiatan yaitu untuk memperoleh keterampilan dan menumbuhkan jiwa kewirausahaan, turut mengsukseskan program pemerintah yaitu Gemar Makan Ikan. Mitra ibu PKK telah menerima pelatihan dan praktek pembuatan nugget ikan nila salin yang telah dilaksanakan pada tanggal 13-15 Juli 2022. Sasaran dalam kegiatan pelatihan yaitu mitra ibu PKK yang berjumlah 20 orang Kegiatan PKM dilakukan dengan memberikan teori atau teknik dan praktek pembuatan nugget ikan nila salin melalui ceramah dan diskusi kelompok secara terarah. Kegiatan pelatihan dapat terlaksana dengan baik, mitra ibu PKK sangat antusias mengikuti pelatihan dan mempunyai motivasi untuk mempraktekkan pembuatan nugget ikan secara mandiri. Hasil penghitungan analisis biaya produk nugget ikan nila salin selama 1 bulan, yaitu Rp. 1.257.360. Pembuatan nugget ikan nila salin dapat memberikan nilai tambah pendapatan melalui kegiatan pemberdayaan masyarakat di Kelurahan Pangkalan Sesai.
Pelatihan Penanaman Bibit Mangrove dengan Metode Klaster pada Mitra Sekat Bakau di Desa Buruk Bakul Kabupaten Bengkalis Rifaldi, Rifaldi; Yoswaty, Dessy; Efriyeldi, Efriyeldi; Elizal, Elizal
Journal of Rural and Urban Community Empowerment Vol. 5 No. 1 (2023): Oktober
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

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Abstract

Salah satu kelompok masyarakat yang menaruh perhatian untuk melakukan upaya konservasi hutan mangrove yaitu mitra Kelompok Peduli Mangrove (KPM) Sekat Bakau di Desa Buruk Bakul Provinsi Riau, dibentuk sejak tahun 2019, dengan kegiatan pembibitan dan penanaman mangrove. Namun, dampak abrasi, kegiatan perambahan hutan mangrove, alih fungsi lahan dan berbagai aktivitas antropogenik menyebabkan keberadaan hutan mangrove mengalami kerusakan. Bibit mangrove yang ditanam mitra KPM Sekat Bakau sekitar 1000 batang/bulan. Harga jual bibit mangrove sekitar Rp. 5000/batang, untuk pembelian polybag dan beberapa peralatan tanam Rp. 500.000. Keuntungan yang diperoleh Rp. 4.500.000/bulan. Sebagian keuntungan dibagi untuk 10 orang anggota KPM Sekat Bakau dan sebagian lagi untuk simpanan kas. Hal ini belum memberikan keuntungan yang optimal dari usaha pembibitan mangrove. Tujuan kegiatan yaitu meningkatkan pengetahuan dan keterampilan mitra KPM Sekat Bakau dan masyarakat di Desa Buruk Bakul berupa teknik penanaman mangrove secara klaster (bergerombol) untuk upaya konservasi hutan mangrove. Hasil kegiatan Program Kemitraan Masyarakat (PKM) menunjukkan bahwa peserta pelatihan yang berjumlah 20 orang sangat antusias menerima transfer iptek yang telah diberikan oleh tim penyuluh LPPM Universitas Riau. Kegiatan ini juga telah memperluas jaringan masyarakat di Desa Buruk Bakul dalam program pelestarian hutan mangrove yang ramah lingkungan.
Analysis of Suitability and Supporting Capacity of Sasak Beach Tourism Pasaman Barat Andrian, Fikri; Rifaldi, Rifaldi; Elizal, Elizal
Jurnal Perikanan dan Kelautan Vol. 27 No. 1 (2022): February
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.27.1.74-81

Abstract

This research was conducted in February 2021 at Sasak Beach, West Pasaman Regency, West Sumatra Province, aiming and the benefit of this study is to examine the suitability of beach tourism in Sasak Beach based on biophysical aspects, including the precept of the community to ecotourism activities in Sasak Beach, as well as analyze the supporting factors of its activities. The method used in the study is a method of surveying directly to the research site and measuring the necessary data qualitatively and quantitatively The goal is to get information about Sasak Beach and the perspective of tourists on the development of marine ecotourism at the research site. Sasak Beach has a specific feature with the planting program of a thousand pine trees. This beach has great potential and opportunities to be developed as a beach tourism area The highest conformity values are found in station I, and the lowest are in stations II and III. This value makes Sasak Beach can be used as a marine ecotourism.
Analysis of the Level of Abrasion on the Coast of Bukit Batu Sub-District, Bengkalis Regency, Riau Paramita, Elisa; Rifaldi, Rifaldi; Feliatra, Feliatra
Jurnal Perikanan dan Kelautan Vol. 27 No. 3 (2022): October
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

The purpose of this study is to determine the rate of shoreline change and the level of abrasion in Bukit Batu District, Bengkalis Regency, Riau Province based on several physical variables in the coastal area. End Point Rate (EPR) is a method that can be used to calculate the rate of shoreline change by displaying transects according to their category (high abrasion, medium abrasion, low abrasion, stable, and accretion). From 1991-2021 there was an abrasion of ±139.71 m equivalent to ±4.65 m/year which mostly occurred in Sukajadi Village and Pangkalan Jambi Village, while accretion of ±27.51 m equivalent to ±1.58 m/year mostly occurred in Pakning Asal Village and Sejangat Village. Moderate abrasion is the predominant type. Sukajadi and Pangkalan Jambi are villages that have experienced high levels of abrasion. The area affected by abrasion has moderate and fast currents as well as coastal protection in the form of mangroves, most of which have been damaged and require repairs. Therefore, the main factors causing the abrasion are thought to be the lack of coastal protection and high-speed currents and waves flowing from the Malacca Strait.
Analysis of Shoreline Changes Period 1991 – 2001 Pasumpahan Island, Padang, West Sumatera Sanora, Fifi; Rifaldi, Rifaldi; Elizal, Elizal
Jurnal Perikanan dan Kelautan Vol. 28 No. 1 (2023): February
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Pasumpahan Island is an area that is affected by currents, waves and sedimentation processes because it is directly adjacent to the Indian Ocean and the mouth of the Pisang River, this causes changes in the coastline in the form of abrasion and accretion on the island. This study aims to determine the effect of currents, waves, and sedimentation processes on the rate of change of the shoreline for 10 years (1991-2001) on Pasumpahan Island. This research was conducted in March 2022 on Pasumpahan Island, Padang City, West Sumatra Province. The method used is a survey method to obtain primary data including current speed, heightwaves and sediments. The study method used is a quantitative method with a multi-temporal satellite imagery approachusing the Digital Shoreline Analysis System (DSAS) software with the End Point Rate (EPR) approach. The results of the analysis of current velocity values ​​ranged from 0.21-0.28 m/s, wave heights ranged from 0.24-0.55 m, the average diameter of the sediment ranged from 0.83-1 Φ. The results of image data processing show that there has been a change in the shoreline in the form of low category abrasion (0.4 m/year), stable (1.42 m/year), and accretion (3.07 m/year) on Pasumpahan Island.
Analysis of the Suitability of Pasumpahan Island Marine Tourism Based on the Tourism Suitability Index Pradana, Muhammad Aditya; Rifaldi, Rifaldi; Nedi, Syahril
Jurnal Perikanan dan Kelautan Vol. 28 No. 2 (2023): June
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Pasumpahan Island is one of the national and international tourist destinations located in Padang City, West Sumatra Province. This island is included in the Regional Marine Protected Area (KKLD) which has a very good coral reef ecosystem, so its management must be following applicable laws and regulations. This research was conducted in March 2022 on Pasumpahan Island, Bungus District, Padang City, West Sumatra Province. The method used is a field survey with data collection using a purposive sampling method. The measured index of water quality was processed using the Storet method. Pasumpahan Island's physical environment is relatively good with a wide expanse of white sand. The suitability of marine tourism in this island area based on the tourism suitability index (IKW) is 85.71% which is included in the S1 category (very suitable). The water quality of the Pasumpahan Island tourist area based on the water quality index (IKP) is in the very good category. Based on the IKW and IKP, the tourist area of ​​Pasumpahan Island is very feasible to be developed as a national marine tourism area.
Impact of Abrasion on Coastal Ecotourism Area in Medang Kampai District, Dumai City, Riau Province Harahap, Anugrah Ramadhan; Mulyadi, Aras; Rifaldi, Rifaldi
Jurnal Perikanan dan Kelautan Vol. 28 No. 3 (2023): October
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

One of the tourism areas in Dumai City is Medang Kampai District, which is a coastal area with an area of ​​373.00 km2. Coastal areas are always used for human activities, one of which is coastal ecotourism which is a coastal tourism activity developed with a conservation approach and utilizing the characteristics of coastal resources as tourist destinations. Medang Kampai District has many coastal ecotourism areas, including Pulai Humpback Beach, Pesona Alam Mundam Beach, Aulia Dumai Beach, Marina Puak Beach, Koneng Beach, Acacia Indah Guntung Beach and Legenda Beach. The method used in this study is a survey method, which was set at 5 (five) research locations, namely Pesona Alam Mundam Beach (Station I), Aulia Dumai Beach (Station II), Koneng Beach (Station III), Acacia Indah Guntung Beach (Station IV), and Legenda Beach (Station V). Based on the results of data processing using DSAS software, the results showed that the coast in the Medang Kampai sub-district was dominated by abrasion with an average abrasion rate of -2.96 m/year. The highest abrasion occurred at Acacia Indah Guntung Beach, followed by Pesona Alam Mundam Beach, Legenda Beach, Aulia Dumai Beach, and Koneng Beach. The impact on the coastal ecotourism area due to abrasion is that several facilities and infrastructure have been damaged and there has been a reduction in the area of ​​coastal ecotourism which is thought to cause a reduction in the capacity of visitors while at the same time directly impacting the economy of the local community whose livelihoods depend on coastal ecotourism.
Optimizing Centralized Financial Management for MSMEs in the Mbulak Wilkel Tourism Area of Bantul with the Approaches of (Tri-N) Niteni, Nirokke, Nambahi, and Tri Pantangan Suciani, Leni; Pitaloka, Dyah Ayu; Sari, Serly Faisa Nur Fatika; Rifaldi, Rifaldi; Setiawan, Miko; Sari, Pristin Prima
IJCS: International Journal of Community Service Vol. 3 No. 2 (2024): July-December
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijcs.v3i2.1143

Abstract

This study aims to optimize centralized financial management for MSMEs in the Mbulak Wilkel tourism area of Bantul through a local wisdom-based approach, specifically the concepts of "Niteni, Nirokke, Nambahi," along with the "Tri Pantangan" teachings of Ki Hadjar Dewantara. This community service program, involving students and faculty from Universitas Sarjanawiyata Tamansiswa, emphasizes a one-door cashier system to enhance financial efficiency and transparency. The methods employed include socialization, training, and the implementation of simple digital technologies such as MokaPOS to facilitate transaction recording. The results indicate that local-based approaches and community cooperation significantly encourage resident participation in more professional and effective centralized management.
Integrasi Garis dan Sudut dalam Matematika dengan Nilai – Nilai Islam Putra, Firnanda Pradana; Rifaldi, Rifaldi
Kaunia: Integration and Interconnection Islam and Science Journal Vol. 20 No. 2 (2024)
Publisher : Fakultas Sains dan Teknologi UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/kaunia.4818

Abstract

Integrating or connecting mathematics with Islamic values can add to the treasures of knowledge and increase the level of our faith in Allah SWT. Apart from that, it is hoped that the integration of mathematics with Islamic values will form good Muslim personal character. Mathematics is a branch of science that has several characteristics, namely hierarchical or orderly, autonomous and consistent. This is of course closely related to the condition of Islamic values, one example of which is the prayer service which has one of the pillars, namely the pillars of meaning or order. A Muslim who performs prayer is certainly obliged to understand the pillars of prayer, including being orderly, if he intentionally leaves them, the prayer will be invalid. Related to orderliness, namely that it is carried out sequentially and consistently. This research aims to integrate Islamic values with lines and angles in mathematics. This research uses a literature study method with activity steps, namely reading and recording relevant and authentic sources, managing research materials, critically reviewing knowledge, ideas or findings in the literature and formulating specific theoretical and methodological contributions. The research results show that when a Muslim wants to stand perfectly in prayer, he forms an upright position in a straight line or forms a 180 angle0. Other movements in prayer, if observed, will form certain angles which, if added together, will form a full circle with a size of 3600. The results of the next study are that someone who is studying in class or at science councils will be shown to obtain angle measurements based on the level of knowledge they have. The context of degrees in mathematics means the measurement of angles depicted on a flat plane. This is in accordance with the quotation of the verse from the Qur'an, "Allah raises the rank of those who believe and have knowledge several degrees" (Mujadalah: 11).
Co-Authors A. Amin, Siti Fuadillah Abdul Hadi Abdul Muhaimin, Abdul Abdullah, Ashari Aimin, M. Akbar, Muh. alfin, alfin Alimudin Laapo Amal, Citra Amalia Amalia, Andi Annisa Andi Saputra Andrian, Fikri Anggun Anggun, Anggun Anisyah, Anisyah Aras Mulyadi Arty, Nindy Arwandi, John Budi Hartono Cahyani, Lenny Indah Chairunnisa, Aulia Rizka Chaldun, Moh Rizqi Dafina Howara Darmawan Darmawan Dessy Yoswaty Efriyeldi, Efriyeldi Elizal, Elizal Emilia Roza Erwan Sastrawan Famrizal, Andi Fauziyyah, Salsabila Sary Feliatra Filihi, Nurfiza Firdaus, Tovan Okta Firdayanti, Rina Halumi, Wa Ode Harahap, Anugrah Ramadhan Hasanah, Putri Aprilia Hasyidan, Ryan Hilman HS, Syarifuddin Ibrahim Ibrahim Ismail Ismail Khoironi, Khoironi Khuzaimah, Khuzaimah Kun Fayakun mardesia, pringgo Matompo, Osgar S. Mohammad Tofan Samudin Mohammad Zeylo Auriza Mubarak Mubarak Muhammad Aswar Limi Muhammad Yusuf Mustafa, Mursyid Mutaqin, Zam Zam Zainal NUR, KHILDA WILDANA Nur, Suaib Nurdin Salama Paddiyatu, Nurhikmah Palahudin, Palahudin Paramita, Elisa Patadungan, Yosep S Pitaloka, Dyah Ayu Pradana, Muhammad Aditya Purwanto Purwanto Putra, Firnanda Pradana Putri, Shilvyani R. Hamdani Harahap Rahmah, Rayhanaddinoor Ramza, Harry Rany, Rany Rasulong, Ismail ROHANA ROHANA Rosalina Rosalina Sabrin, M. Sanora, Fifi Sari, Pristin Prima Sari, Serly Faisa Nur Fatika Setiawan, Miko Slamet, Agustono Solahudin, Ade Sri Dewi Astuty Ilyas Sri Mulyani Suciani, Leni Suherman, La Ode Achmad Sumardi, Cindy Aprili Sunimah, Sunimah Sunyanti, Sunyanti Syahril Nedi Syamsir Dewang Yendrizal, Yendrizal Yusdin Gagaramusu