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All Journal Jurnal Kesehatan Lingkungan indonesia Al-Ulum JPI (Jurnal Pendidikan Indonesia) : Jurnal Ilmiah Pendidikan Jurnal Kimia dan Kemasan Science and Technology Indonesia Journal of Medives Jurnal Penelitian Sains IKRA-ITH EKONOMIKA Majalah Ilmiah Pengkajian Industri Metalurgi Jurnal Matematika UNAND JURNAL AXIOMA : Jurnal Matematika dan Pembelajaran Jurnal Ilmiah Manajemen Kesatuan Jurnal Agribisnis Jurnal Ilmiah Wahana Pendidikan Jurnal Ilmiah Pariwisata Kesatuan Jurnal Abdimas Dedikasi Kesatuan Baselang: Jurnal Ilmu Pertanian, Peternakan, Perikanan dan Lingkungan Jurnal Manajemen, Bisnis dan Kewirausahaan Jurnal Locus Penelitian dan Pengabdian Jurnal Insinyur Profesional ARMADA : Jurnal Penelitian Multidisiplin Jurnal Material dan Energi Indonesia Jurnal Matematika Integratif Jurnal Informatika Kesatuan Hilbert Journal of Mathematical Analysis TADAYYUN: Journal of Religious, Social and Humanities
Mashadi Mashadi
Pusat Teknologi Bahan Industri Nuklir – BATAN Gedung 71-BATAN Kawasan Puspiptek Serpong, Tangerang Selatan 15314
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Analisis Return on Equity, Debt Equity Ratio, dan Current Ratio terhadap Return on Asset Sub Sektor Otomotif yang Terdaftar di Bursa Efek Indonesia (Periode 2012-2020) Riyadi, Rizal; Mashadi, Mashadi
ARMADA : Jurnal Penelitian Multidisiplin Vol. 2 No. 7 (2024): ARMADA : Jurnal Penelitian Multidisplin, Juli 2024
Publisher : LPPM Sekolah Tinggi Ilmu Ekonomi 45 Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/armada.v2i7.1373

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh Return On Equity (ROE), Debt to Equity Ratio (DER), dan Current Ratio (CR) terhadap Return On Asset (ROA), baik secara parsial maupun simultan pada perusahaan manufaktur sub sektor otomotif yang terdaftar di Bursa Efek Indonesia (BEI) periode 2012–2020. Penelitian ini menggunakan desain ex post facto dengan populasi seluruh perusahaan manufaktur sub sektor otomotif yang terdaftar di BEI selama periode tersebut. Teknik pengambilan sampel dilakukan dengan metode purposive sampling berdasarkan kriteria tertentu sehingga diperoleh 9 perusahaan sebagai sampel penelitian. Data yang digunakan merupakan data sekunder yang diperoleh dari Indonesian Capital Market Directory (ICMD). Analisis data dilakukan dengan metode regresi linier berganda melalui pendekatan kuantitatif deskriptif. Pengujian hipotesis dilakukan dengan uji F untuk pengaruh simultan dan uji t untuk pengaruh parsial. Hasil penelitian menunjukkan bahwa: (1) ROE berpengaruh signifikan terhadap ROA dengan nilai signifikansi t sebesar 0,002; (2) DER tidak berpengaruh terhadap ROA dengan nilai signifikansi t sebesar 0,792; (3) CR tidak berpengaruh terhadap ROA dengan nilai signifikansi t sebesar 0,832. Secara simultan, ROE, DER, dan CR berpengaruh signifikan terhadap ROA dengan nilai signifikansi F sebesar 0,012 (< 0,05).
The Effect of Implementing the Agribusiness System on Increasing the Income of Vegetable Farmers in Kuantan Singingi Regency Susanto, Haris; Mashadi, Mashadi; Sasmi, Meli; Hariadi, Hariadi; Kusuma, Arya Diki
Baselang Vol 3, No 2: OKTOBER 2023
Publisher : Fakultas Pertanian Universitas Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36355/bsl.v3i2.164

Abstract

This research aims to determine the application of the agribusiness system to vegetable farmers which includes the production facilities sub-system, cultivation sub-system, handling and post-harvest sub-system and product marketing sub-system and to determine the effect of implementing the agribusiness system on the income level of vegetable farmers. The research was conducted using the survey method. A survey is research that takes samples from a population and uses a questionnaire as the main data collection tool. Meanwhile, the sampling method used was Stratified Purposive Sampling. Based on the results of research regarding the influence of the application of the agribusiness subsystem on the income of vegetable farmers, it can be concluded as follows: The application of the vegetable agribusiness system has been implemented well by respondents, especially in the production and marketing facilities subsystem. The independent variables of the production facilities subsystem (X1), farming subsystem (X2), post-harvest handling and processing subsystem (X3) and marketing subsystem (X4) which have a significant effect on income are the production and marketing facilities subsystem, because they have a smaller P-value from real level = α 0.05. Meanwhile, the post-harvest handling and processing subsystem has no real effect on income, because it has a P-value greater than the real level = α 0.05.
Hubungan Antara Daya Inovatif Kepala Sekolah, Budaya Kerja Guru Dan Etos Kerja Guru Terhadap Efektivitas Pembelajaran Di Smk Kabupaten Malang Badru, Mohamad; Ghofur, Abdul; Mashadi, Mashadi
Jurnal Locus Penelitian dan Pengabdian Vol. 1 No. 9 (2022): Jurnal Locus Penelitian dan Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v1i6.144

Abstract

Hasil pembelajaran yang baik haruslah bersifat menyeluruh, artinya bukan hanya sekedar penguasaan pengetahuan semata-mata, tetapi juga dampak dalam perubahan sikap dan tingkah laku secara terpadu. Jenis penelitian ini merupakan penelitian korelatif dengan pendekatan kuantitatif, dilaksanakan di SMK Dharma Wanita Kromengan Malang. Berdasarkan pengujian secara berganda pada uji F menunjukan bahwa H0 ditolak dan H1 diterima yang berarti bahwa terdapat hubungan yang signifikan antara inovatif kepala sekolah (X1), budaya kerja guru (X2), dan etos kerja guru (X3) sangat erat sekali dengan efektifitias pembelajaran siswa (Y) di SMK Dharma Wanita Kromengan Malang dengan tingkat kepercayaan 95% dan pengaruh yang terbesar adalah inovatif kepala sekolah.
USAHATANI PAKCOY SISTEM HIDROPONIK DALAM MENINGKATKAN PENDAPATAN PETANI Rifqi, Muhammad; Sasmi, Meli; Mashadi, Mashadi
JURNAL AGRIBISNIS Vol. 12 No. 2 (2023): Jurnal Agribisnis Volume 12 No 2 Tahun 2023
Publisher : Program Studi Agribisnis, Fakultas Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/agribisnis.v12i2.2810

Abstract

Penelitian ini bertujuan untuk menganalisis biaya produksi, penerimaan, pendapatan, pendapatan kerja keluarga dan efisiensi usahatani pakcoy secara hidroponik milik Bapak Budianto di Kelurahan Simpang Tiga, Kecamatan Kuantan Tengah, Kabupaten Kuantan Singingi. Data dianalisis secara kuantitatif dengan menggunakan analisis pendapatan terhadap produksi, biaya dan harga pada sayuran pakcoy hidroponik dengan menggunakan program Microsoft Excel untuk menganalisis pendapatan dan tingkat efisiensi. Hasil analisis menunjukkan biaya penyusutan peralatan dalam satu kali proses produksi sebesar Rp 86.432,-, biaya tidak tetap Rp 559.263,- dan total biaya sebesar Rp 645.695,-, penerimaan sebesar Rp 715.000,-, pendapatan sebesar Rp 69.305,-, pendapatan kerja keluarga sebesar Rp 958.959 dan Nilai R/C sebesar 1,11 yang artinya setiap biaya yang dikeluarkan Rp 1,-, akan menghasilkan pendapatan kotor sebesar Rp 1,11,- atau pendapatan bersih sebesar Rp 0,11,-, dikarenakan nilai R/C lebih dari satu, maka dapat disimpulkan bahwa usahatani pakcoy hidroponik milik Bapak Budianto layak untuk dikembangkan. The purpose of this study is to analyze production costs, receipts, income, family work income and the level of efficiency in Mr. Budianto's hydroponic pakcoy farming business in Simpang Tiga Village, Central Kuantan District, Kuantan Singingi Regency. The data were quantitatively analyzed using revenue analysis of production, costs and prices on hydroponic pakcoy vegetables using the Microsoft Excel program to analyze revenues and efficiency levels.The results of the analysis show that the cost of depreciation of equipment in one production process is IDR 86,432,-, non-fixed costs of IDR 559,263,- and the total cost of IDR 645,695,-, receipts of IDR 715,000,-, income of IDR 69,305,-, family work income of IDR 958,959 and R/C value of 1.11 which means that each cost incurred by IDR 1,-, will generate gross income of IDR 1.11,- or net income of Rp 0.11,-, because the R/C value is more than one, it can be concluded that Mr. Budianto's hydroponic pakcoy farming business is worthy of development.
Kelompok Arisan Berantas Buta Huruf Al Qur'an; Studi Pada Masyarakat Desa Pilobuhuta Kabupaten Gorontalo Ahmad, Cicin; Mashadi, Mashadi; Mustaqimah, Mustaqimah
TADAYYUN: Journal of Religion, Social and Humanities Studies Vol 1 No 01 (2023): ISLAM DAN BUDAYA LOKAL
Publisher : Program Studi Sosiologi Agama, FUD, IAIN Sultan Amai Gorontalo

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Abstract

This paper examines the role of arisan groups in eradicating illiteracy in the Qur'an. This research uses a qualitative approach with field studies. Data were collected by means of observation, interviews, and documentation. The results showed that the arisan group played a major role in eradicating illiteracy in the Qur'an in Pilobuhuta Village. The social gathering was centered at the Nur-Huda Mosque, and received a positive response from the takmirul mosque and the local village government. Opportunity, this social gathering strategy can be a program that can be distributed to other villages to eradicate illiteracy in the Qur'an. The challenges include the availability of appropriate methods in teaching people to read the Qur'an, which vary in age and ability to grasp.
Sintesis dan Karakterisasi LaxSr(1-x)MnO3 (0 ≤ x ≤ 1) sebagai Microwave Absorber pada Frekuensi 4-8 GHz dengan Teknik Milling Sari, Novita; Mashadi, Mashadi; Ramlan, Ramlan; Bama, Akhmad Aminuddin; Tambunan, Melenia
Jurnal Penelitian Sains Vol 27, No 3 (2025)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v27i3.1285

Abstract

Penelitian ini bertujuan untuk mengetahui karakteristik material LaxSr(1-x)MnO3  (x = 0,0; 0,25; 0,50; 0,75; 1,0) sebagai penyerap gelombang mikro menggunakan teknik mechanical milling. Bahan yang digunakan meliputi La2O3, SrCO3, MnO2, dan etanol. Sampel dicampur dan digiling selama 5 jam, dikeringkan pada suhu 80°C selama 24 jam, dan di sintering pada suhu 1000°C selama 5 jam. Analisis XRD menunjukkan bahwa SrMnO3 (x = 0.0) membentuk fase utama SrMnO3 dan fase kedua MnO3, sedangkan La0,25Sr0,75MnO3, La0,50Sr0,50MnO3, dan La0,75Sr0,25MnO3 menunjukkan fase utama LaSrMnO3 dan fase kedua SrMnO3. Untuk LaMnO3 (x = 1.0) memiliki fase utama LaMnO3 dan fase kedua MnO3. Karakterisasi SEM menunjukkan bentuk dan ukuran berbeda dengan ukuran partikel berkisar antara 100 hingga 800 nm, rata-rata ±413.36 nm. Analisis VNA menunjukkan penyerapan gelombang mikro tertinggi (97,61%) pada x = 0.0 dan terendah (74,07%) pada x = 1.0. Hal ini mengindikasikan bahwa dengan melakukan substitusi ion La3+ dapat mengurangi kemampuan penyerapan gelombang mikro. Studi ini memberikan dasar untuk pengembangan material penyerap gelombang mikro baru berbasis LaxSr(1-x)MnO3.
Kepastian Hukum Pelaksanaan Rups Terkait Gugatan Penggunaan Media Elektronik Dalam Rapat Mashadi, Mashadi; Marniati, Felicitas Sri; Fitrian, Achmad
Jurnal Ilmiah Wahana Pendidikan Vol 11 No 12.D (2025): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

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Abstract

Penelitian ini membahas penerapan konsep Cyber Notary di Indonesia, yang diperkenalkan pada tahun 1995. Cyber Notary diatur dalam Pasal 15 Ayat (3) Undang-Undang Republik Indonesia Nomor 30 Tahun 2004 Tentang Jabatan Notaris. Dalam penelitian ini peneliti mengangkat dua rumusan masalah anatara lain Bagaimana Penerapan Cyber Notary Dalam Sistem Hukum Nasional dan Bagaimana Kepastian Hukum Pelaksanaan RUPS Terkait Gugatan Penggunaan Media Elektronik Dalam Rapat. Adapun teroi yang digunakan ialah Teori Sistem Hukum dari Lawrence Friedman dan Teori Kepastian hukum Jan M. Otto. Metode yang digunakan dalam penelitian ini dengan jenis penelitian yuridis normatif. Adapun pendekatan penelitian yang digunakan pendekatan perundang-undangan, pendekatan konseptual dan pendekatan kasus. Teknik pengumpulan bahan hukum dilakukan dengan cara mengidentifikasi dan menginventarisasi aturan hukum positif, literatur buku, jurnal, dan sumber bahan hukum lainnya. Untuk Teknik Analisa bahan hukum dilakukan dengan penafsiran gramatikal dan penafsiran historis. Dari hasil penelitian ini menunjukkan bahwa meskipun teknologi seperti tanda tangan elektronik dan video konferensi berpotensi mendukung pembuatan akta autentik secara digital, implementasi Cyber Notary di Indonesia menghadapi sejumlah kendala yang signifikan. Dari sisi substansi hukum, terdapat kekurangan pengaturan mengenai akta elektronik dalam Undang-Undang Jabatan Notaris dan ketidakjelasan terkait tanda tangan elektronik oleh Notaris. Struktur hukum juga menghadapi tantangan, seperti ketiadaan mekanisme pengawasan dan lembaga yang dapat memvalidasi akta elektronik. Penelitian ini menyimpulkan bahwa untuk memastikan penerimaan Cyber Notary yang sah, perlu dilakukan harmonisasi regulasi antar undang-undang terkait serta pengembangan ketentuan yang mengatur integritas, autentisitas, dan keabsahan dokumen elektronik. Regulasi yang lebih jelas dan sistem pengawasan yang efektif sangat diperlukan untuk memberikan kepastian hukum bagi para pihak yang terlibat dalam pembuatan akta autentik secara elektronik di Indonesia.
Sustainable Corrosion Protection of Stainless Steel 316L in Marine Environment Using Electrophoretically Deposited Garlic Extract Green Inhibitor: Electrochemical and Surface Analysis Arwati, IG. Ayu; Ginting, Dianta; Feriyanto, Dafit; Golwa, Gian Villany; Yuliarty, Popi; Tarigan, Kontan; Damar, Stenlly; Khuzaimah; Mashadi, Mashadi
Science and Technology Indonesia Vol. 11 No. 2 (2026): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2026.11.2.447-456

Abstract

The increasing demand for sustainable and environmentally friendly corrosion inhibitors has driven research toward green alternatives to conventional toxic inhibitors. This study investigates the corrosion protection performance of garlic extract (Allium sativum) as an eco-friendly green inhibitor for stainless steel 316L in 3.5% NaCl marine environment. The inhibition efficiency was evaluated using electrochemical potentiodynamic polarization techniques, complemented by comprehensive surface characterization through scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry analysis. Electrophoretic deposition (EPD) was employed to apply garlic extract concentrations of 8, 10, and 12 mL onto SS316L specimens. Results demonstrated significant corrosion rate reduction from 0.0082732 mmpy (unprotected specimen) to 0.0014547 mmpy with 12 mL garlic extract treatment, achieving maximum inhibition efficiency of 82%. EIS revealed substantial increase in charge transfer resistance (>170 kΩ), while electrochemical analysis demonstrated mixed-type inhibition behavior with reduced corrosion current densities. SEM-EDX confirmed the formation of protective Fe2+-allicin complex layers on the metal surface, while Raman spectroscopy showed substantial reduction in corrosion products (a-Fe2O3 and y-FeOOH) formation. Cyclic voltammetry demonstrated a five-order-of-magnitude reduction in diffusion rate, confirming exceptional barrier properties. The superior performance is attributed to the chemisorption of sulfur and oxygen-containing compounds in allicin molecules onto active steel sites, forming stable protective films. This green inhibitor demonstrates excellent potential for sustainable corrosion protection in marine and industrial applications, offering an environmentally benign alternative to synthetic inhibitors.
Alternative Proofs for the Side Trisector Lengths Theorem of a Triangle Rahmayani, Indah; Mashadi, Mashadi; Gemawati, Sri
Jurnal Matematika Integratif Vol 22, No 1: April 2026
Publisher : Department of Matematics, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jmi.v22.n1.70223.91-100

Abstract

In general, discussions regarding the line for side trisectors are still relatively limited compared to angle trisectors. For angle trisectors, most studies only discuss Morley’s Theorem and its extensions. Meanwhile, for side trisectors, existing papers usually calculate the lengths using both the sides and the angles of the triangle. A common problem is how to find the side trisectors length from its opposite vertex when only the side lengths are known. Furthermore, if the side trisector line is extended to form a tangential excircle, can we determine its radius. In this article, we discuss several alternative proofs to determine the lengths produced by side trisectors in a triangle. The main focus is to derive a formula for the side trisectors length using only the original side lengths and to find the radius of the tangential excircle. These proofs are done simply by using several geometric approaches, such as trigonometry, Stewart’s Theorem, and the Pythagorean Theorem. The result provide a standard formula for the trisector length, which is then used to find the radius of the tangential excircle in the constructed triangle
Alternative Proof of the Butterfly Theorem on a Hyperbola Teguh, M.; Mashadi, Mashadi
Jurnal Matematika Integratif Vol 22, No 1: April 2026
Publisher : Department of Matematics, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/jmi.v22.n1.70222.73-82

Abstract

The Butterfly Theorem originally applies to a circle. Several researchers have proven the Butterfly Theorem using various methods of proof. Furthermore, the theorem has been extended from its original application on circles to other conic sections, namely the parabola and the ellipse, also through different proof techniques. In addition, the development of the Butterfly Theorem can be applied to another conic section, the hyperbola, through an analytic approach. In this paper, the author proves the Butterfly Theorem on a hyperbola using Haruki’s Lemma. Haruki’s Lemma was originally established for circles. Therefore, the author develops Haruki’s Lemma specifically for the hyperbola, which is then used to prove the Butterfly Theorem on a hyperbola. Thus, a new proof of the Butterfly Theorem on a hyperbola can be established
Co-Authors A. Mahendra, A. Aang Munawar Abdul Ghofur Ahmad, Cicin Akhmad Aminuddin Bama, Akhmad Aminuddin Alberta Rika Pratiwi Amwila P, Andi Yudha Andriani, Dessy Ayu Puspita, Dian Badru, Mohamad Bambang Sugeng Barutu, Fabelia Andani Chatarina Umbul Wahyuni Dafit Feriyanto Damar, Stenlly Dianta Ginting Dinata, Muhammad Farhan Fionari, Gebi Fitrian, Achmad Gen Gen Gendalasari Gian Villany Golwa Hariadi Hariadi Heti Herawati Husnul Khatimah Hutabarat, Arnold Sultantio Hutajulu, Olnes Yosefa I Gusti Ayu Arwati Khim, Soei Khoir, Ahmad Din KHUZAIMAH Kinanti Wijaya, Kinanti Kusuma, Arya Diki Mahidin Mahidin Mariana Mariana Marniati, Felicitas Sri Muhammad Rifqi muhammad rizky, muhammad Mumuh Mulyana Mustaqimah Mustaqimah Novita Sari Nurmaya Arofah Pratiwi, Delisa Putri, Rika Andriyani Rachmawati, Indri Rahmayani, Indah Ramlan, H. Riyadi, Rizal Rusliana, Selvia Naca Saeful Yusuf Sasmi, Meli Satyamulya, Reynaldi Rivanus Setyo Purwanto SIREGAR, TESALONIKA Sitorus, Mido Ester Soedargo, Bayu Sri Gemawati Sugik Sugiantoro, Sugik Sukmana, Sugi Andrian susanto, haris Syafitri, sukma Novia Tambunan, Melenia Tarigan, Kontan Teguh, M. Tilopa, Era Napra Togar Saragi, Togar Wisnu A. Adi Wisnu Ari Adi Yoyon Supriadi Yuliardani, Novita Yuliarty, Popi Yunasfi . yunasfi yunasfi Yunasfi, Yunasfi - Yusdira, Ade Zul Azhar