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All Journal Natural Science: Journal of Science and Technology ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Integritas: Jurnal Antikorupsi JURNAL PENDIDIKAN TAMBUSAI Literatus Educenter: Jurnal Ilmiah Pendidikan SinarFe7 eProceedings of Engineering Innovative: Journal Of Social Science Research AMMA : Jurnal Pengabdian Masyarakat Jurnal Kolaborasi Sains dan Ilmu Terapan EDUCENTER JURNAL PENDIDIKAN Journal of Mathematics, Computation and Statistics (JMATHCOS) HUMANUS : Jurnal Sosiohumaniora Nusantara
Oryza Sativa
Tadulako University
Aerospace Engineering Humanities Automotive Engineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Nursing Public Health Social Sciences Other

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Manajemen Kinerja di Otoritas Anti Korupsi : Studi Kasus Indonesia dan Swedia Sativa, Oryza; Daskalakis, Christos
Integritas : Jurnal Antikorupsi Vol. 4 No. 2 (2018): INTEGRITAS Volume 04 Nomor 2 Tahun 2018
Publisher : Komisi Pemberantasan Korupsi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (320.006 KB) | DOI: 10.32697/integritas.v4i2.264

Abstract

This paper investigates how Anti-Corruption Authorities (ACA) make use of performance measurement in order to improve performance management. The research framework has been developed from Ferreira and Otley (2009). The authors used a qualitative method with multiple case study in order to perform comparative research. Indonesia’s Komisi Pemberantasan Korupsi and Swedish National Anti-Corruption Unit were chosen as the sample of the study. The research found that both of the authorities has a greatly different performance management system and performance measurement. It can be seen from the use of key performance indicators and its role in the management control system, as well as the target setting, performance evaluation, and rewards.
UJI AKTIVITAS ANTIINFLAMASI GEL EKSTRAK BUAH KAKTUS (OPUNTIA ELATIOR MILL.) PADA TIKUS (RATTUS NORVEGICUS L.) YANG DIINDUKSI LAMDA KARAGENAN Sativa, Oryza; Yuliet, Yuliet; Sulastri, Evi
Natural Science: Journal of Science and Technology Vol 3, No 2 (2014): Volume 3 Number 2 (August 2014)
Publisher : Univ. Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.167 KB)

Abstract

This research is about anti inflammatory activity of cactus fruits (Opuntia elatior Mill.) extract gel in rats (Rattus norvegicus L.) at induced lamda carragenan in purpose to determine anti inflammatory activity, and concentration of cactus fruits extract in the gel that have an anti inflammatory activity which is equal to sodium diclofenac 1% activity, and to determine the effect of variations in the concentration of cactus fruit extract (Opuntia elatior Mill) on the physical stability of the gel. Extract was made by remaseration method using 70% ethanol. Physical stability test was conducted based on organoleptic, pH, viscosity and homogeneity of the gel. Test on Antiinflammatory activity were divided into 5 groups of treatment. Each rats induced by using lambda carrageenan. The first group of rats was given a gel without active ingredient as a negative control, groups of 2nd, 3rd and 4th rats were given gel cactus fruit extract in concentration of 5%, 10% and 15 % respectively, and 5th groups of rats were given diclofenac sodium gel as a positive control. Diameter and volume of inflammation were measured during 6 hours with 30 minute interval. Colected data were statistically analyzed using ANOVA. The results showed that concentration of cactus fruit extract in proportion of 5%, 10% and 15% in the gel preparation showed different conditions on organoleptic observations and homogeneity even though there was no different in the pH and viscosity during 14 days of storage. The results on anti-inflammatory activity testusing concentration of 5%, 10% and 15% have a recuperation effect on inflammation Gel contining 10% of extract has anti inflammatory activity which equal to 1% of sodium diclofenac activityi.e. the percentage of diameter and volume of  inflammation were 63,75% and 20,93%.
Pengaruh pendekatan saintifik dengan media Powerpoint terhadap hasil belajar siswa pada materi ikatan kimia Sativa, Oryza; Jasmidi
Educenter : Jurnal Ilmiah Pendidikan Vol. 1 No. 12 (2022): Educenter : Jurnal Ilmiah Pendidikan
Publisher : ARKA INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55904/educenter.v1i12.175

Abstract

This study aims to: (1) To determine whether the increase in student learning outcomes taught with a scientific approach with PowerPoint media is higher than the increase in student learning outcomes taught with conventional models (2) To determine student responses to the application of a scientific approach with PowerPoint media on the subject of chemical bonds. The population of this study were all students of class X MIA SMA Swasta Amir Hamzah Medan, as many as 40 students. The sample in this study was taken using total sampling technique. The samples taken in this study were 2 classes, namely class X MIA-1 as the experimental class and X MIA-2 as the control class. Both classes were given different treatments, the experimental class with a scientific approach and PowerPoint media , while the control class was taught with a conventional model. From the posttest results, the average value of student learning outcomes in the experimental class was 88.75 and the control class was 81.50. From the N-gain results, the percentage increase in learning outcomes of the experimental class was 84.9 percent and the control class was 76.2 percent. Based on the N-gain calculation value, the increase in learning outcomes taught with a scientific approach and PowerPoint media is higher than the increase in student learning outcomes taught with conventional models. Student response to the scientific approach and PowerPoint media on chemical bonding material has a percentage of 80.25 percent and is categorized as good.
Korelasi antara Pola Asuh Orang Tua dengan Perkembangan Kestabilan Emosi Sosial Peserta Didik Mustikaati, Wina; Khaerunnisa, Hanie; Sativa, Oryza; Ayu, Putri; Nurfitria, Rachma
Jurnal Pendidikan Tambusai Vol. 7 No. 2 (2023): Agustus 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v7i2.6823

Abstract

Emosi merupakan salah satu bagian terpenting dalam diri manusia, karena melalui emosi memungkinkan individu untuk mengungkapkan atau mengungkapkan perasaannya, individu tidak hanya dapat mengungkapkan atau mengutarakan perasaannya saja karena dalam semua perkembangan manusia pasti ada perkembangan emosi. Penerapan pola asuh dapat mempengaruhi kebiasaan belajar anak baik di rumah maupun di sekolah. Karena orang tua adalah guru pertama dan terpenting bagi anak. Sebagai orang tua, mereka harus membekali anaknya dengan pola asuh yang baik untuk membentuk generasi penerus yang berkualitas. Beberapa dampak buruk yang dapat terjadi akibat pola asuh yang salah pada anak adalah: lambat berpikir orang dewasa, takut mengambil keputusan, sulit bersosialisasi, dan sulit mengendalikan emosi, serta mudah depresi. Oleh karena itu, orang tua harus memberikan pola asuh yang baik karena pola asuh dapat mempengaruhi dan membentuk karakter anak secara signifikan melalui berbagai hal yang dilakukannya.
Pemodelan Active Front End Converter (AFE) Tiga-Fasa Tiga-Kaki menggunakan Kendali Model Predictive Control (MPC) SATIVA, ORYZA; ANDANG, ASEP; CHOBIR, ABDUL
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 11, No 1: Published January 2023
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v11i1.241

Abstract

ABSTRAKPenelitian ini membahas Active Front End Converter (AFE) tiga-fasa tiga-kaki menggunakan kendali Model Predictive Control (MPC) pada pensakelaran converter yang dapat mengurangi nilai harmonisa dan memperbaiki faktor daya pada jaringan. Kendali MPC digunakan untuk melakukan prediksi tegangan dan arus AFE dengan cara memasukkan vektor tegangan yang dihasilkan oleh sakelar konverter ke dalam model state-space diskrit dan dievaluasi menggunakan cost function. Simulasi model dilakukan pada beberapa kondisi, yaitu simulasi beban resistif, beban induktif, beban kapasitif, beban nonlinear, dan variable frequency drive (VFD) dengan motor induksi. Simulasi beban resistif, THDv dan THDi secara berurutan nilai rata-ratanya sebesar 0.02% dan 0.45%, beban induktif, 0.01% dan 1.92%, beban kapasitif, 0.01% dan 1.92%, beban nonlinear, 0.03% dan 1.23%, dan beban VFD dengan motor induksi sebesar 0.04% dan 1.18%. Faktor daya pada simulasi beban bervariasi menghasilkan unity. Dari hasil simulasi didapatkan kesimpulan kendali MPC pada AFE mampu meningkatkan kualitas daya listrik.Kata kunci: Harmonisa, Faktor Daya, AFE, MPC, Model Vektor Ruang ABSTRACTThis study discusses a three-phase three-leg Active Front End Converter (AFE) using Model Predictive Control (MPC) which controls converter switching to reduce harmonic values and improve the power factor on the network. MPC is used to predict the AFE voltage and current by entering the voltage vector generated by the converter switch into a discrete state-space model and evaluated using a cost function. The simulations of the model have been done under several conditions, resistive loads, inductive loads, capacitive loads, nonlinear loads, and variable frequency drive (VFD) with an induction motor. Resistive load simulations, THDv and THDi respectively, the average values are 0.02% and 0.45%, inductive load, 0.01% and 1.92%, capacitive load, 0.01% and 1.92%, nonlinear load, 0.03% and 1.23%, and load VFD with induction motor is 0.04% and 1.18%. The power factor in the varying load simulation results is unity. From the simulation results, it can be concluded that MPC control on AFE can improve electrical power quality. Keywords: Harmonics, Power Factor, AFE, MPC, Space Vector Model
Zero Food Waste: Ekoenzim Sebagai Upaya Pembentukan Karakter Peduli Lingkungan Di SDN 1 Munjuljaya Fajrussalam, Hisny; Permas Hikmatunisa, Nenden; Zia Fatimah, Alida; Oktaviani, Anti; Nabilah, Khairun; Amanaturrizqi, Khomsanuha; Sativa, Oryza; Zulfa Luthfiyyah, Riska
AMMA : Jurnal Pengabdian Masyarakat Vol. 3 No. 11 : Desember (2024): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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

Abstract

One of the characteristics of a healthy environment is an environment that is free of waste. Waste itself can be defined as the remaining waste of products that have been processed or consumed and are no longer used. This problem can be sustainable if not handled wisely because it can lead to water and air pollution, an increase in greenhouse gases, and the spread of disease. As an effort to deal with waste, especially household waste, students carry out community service as a form of output from the implementation of the Educational Professional Strengthening Program (P3K) which is carried out at SDN 1 Munjuljaya with the target of all school residents and student guardians by implementing the Zero Food Waste program through ecoenzyme products. This service aims to invite the school community to utilize the remaining household waste to make ecoenzyme products to improve the character of environmental care at SDN 1 Munjuljaya. The method used in this activity is socialization with a persuasive approach to educating students and parents to be more concerned about the utilization of organic waste by utilizing ecoenzyme to form the character of environmental care at SDN 1 Munjuljaya.
ENSEMBLE METHODS IN STATISTICAL DOWNSCALING WITH GAMMA-LASSO REGRESSION FOR RAINFALL PREDICTION IN WEST JAVA Sativa, Oryza; Djuraidah, Anik; Notodiputro, Khairil Anwar
Journal of Mathematics, Computations and Statistics Vol. 8 No. 1 (2025): Volume 08 Nomor 01 (April 2025)
Publisher : Jurusan Matematika FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/jmathcos.v8i1.7748

Abstract

Rainfall is a crucial factor in weather and climate studies, particularly in disaster mitigation efforts such as flood and landslide prevention. West Java, with its mountainous topography and high rainfall, requires accurate rainfall predictions as a basis for decision-making. One effective approach is the ensemble method, which provides valuable insights into prediction outcomes and captures uncertainty. This study analyzes rainfall data from six stations in West Java (Cibukamanah, Krangkeng, Kawali, Katulampa, Cibeureum, and Gunung Mas) over the period 1991–2020. The results indicate that applying the ensemble method in Statistical Downscaling modeling using Gamma-Lasso Regression improves rainfall prediction accuracy compared to single models.
Penggunaan Status Whatsapp Sebagai Strategi Promosi: Studi Kualitatif Pada Praktik Wirausaha Mahasiswa Universitas Djuanda Azhari, Tazkia Riska Alviana; Irawansyah, Ridwan; Sativa, Oryza; Suhendar, Ervina; Oktavia, Denta Rizkiani; Kamilatin, Tiara Lie
HUMANUS : Jurnal Sosiohumaniora Nusantara Vol. 2 No. 3 (2025): HUMANUS (Jurnal Sosiohumaniora Nusantara)
Publisher : Yayasan Pengembangan Dan Pemberdayaan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62180/sb4bs061

Abstract

Fitur “Status” di WhatsApp, yang hadir sejak 2017, telah berkembang menjadi salah satu sarana penting untuk ekspresi digital yang digunakan tidak hanya untuk berkomunikasi lewat pesan teks dan vidio melainkan menjadi sarana promosi bagi pelaku usaha. Tujuan penelitian ini adalah untuk mengetahui secara mendalam mengenai cara mahasiswa memanfaatkan fitur status WhatsApp sebagai strategi promosi usaha, mencakup pola penggunaan, efektivitas media tersebut, serta hambatan yang dihadapi dalam praktiknya. Metode penelitian yang digunakan di dalam artikel ini adalah pendekatan kualitatif dengan metode dekskriptif untuk memahami fenomena penggunaan status WhatsApp sebagai strategi promosi oleh mahasiswa wirausaha Universitas Djuanda. Hasil penelitian ini menunjukan bahwa mahasiswa Universitas Djuanda menggunakan fitur status aplikasi WhatsApp untuk mempromosikan barang dan jasa yang dimiliki, alasan utama penggunaan fitur tersebut karena minimnya biaya promosi yang perlu diperlukan, kemudahan fitur aplikasi yang diberikan, hingga kedekatan produsen bersama konsumen. Ditemukan juga tantangan yang ada seperti keterbatasan durasi tayang selama 24 jam, minimnya respon langsung, dan pelaku usaha yang kesulitan dalam menciptakan konten menarik.
Strategi Manajemen Laboratorium IPA dalam Meningkatkan Kualitas Praktikum Peserta Didik di Sekolah Menengah Laili.S, Agnes Alvi Nur; Dwi Andini, Aisha; Sativa, Oryza; Magaretta, Desyana Olenka
Jurnal Kolaborasi Sains dan Ilmu Terapan Vol. 3 No. 2 (2025): Jurnal Kolaborasi Sains dan Ilmu Terapan
Publisher : Utiliti Project Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69688/juksit.v3i2.75

Abstract

Penelitian ini bertujuan untuk mengkaji strategi manajemen laboratorium IPA dalam meningkatkan kualitas praktikum peserta didik di sekolah menengah. Metode yang digunakan adalah literature review dengan menelaah berbagai sumber akademik terkait pengelolaan laboratorium IPA. Hasil kajian menunjukkan bahwa strategi manajemen yang efektif meliputi perencanaan, pengorganisasian, pelaksanaan, dan pengawasan. Faktor pendukung utama adalah adanya pendanaan yang memadai dan tenaga pendidik yang kompeten, sedangkan hambatan utamanya meliputi keterbatasan alat, kurangnya tenaga laboran khusus, serta waktu praktikum yang terbatas. Implementasi strategi manajemen laboratorium yang baik terbukti dapat meningkatkan efektivitas praktikum dan pemahaman peserta didik terhadap konsep-konsep IPA. Penelitian ini merekomendasikan peningkatan alokasi sumber daya, integrasi teknologi, serta penguatan kemitraan dengan industri untuk mendukung pengelolaan laboratorium yang lebih optimal.
Pengujian Aspek- Aspek Pada Sistem Parkir Pintar Pintar Pada Area Basement TULT Sativa, Oryza; Usman, Uke Kurniawan; Astuti, Sri
eProceedings of Engineering Vol. 11 No. 6 (2024): Desember 2024
Publisher : eProceedings of Engineering

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

Abstract

Parkiran basement Telkom University Landmark Tower adalah fasilitas penting bagi dosen dan pegawai. Namun, efisiensi dan aksesibiltas tempat parkir menjadi tantangan signifikat. Oleh karena itu untuk mengatasi hal tersebut, penulis mengusulkan solusi inovatif berbasis IoT (Internat of Things). Solusi yang diusulkan adalah dengan cara mengintegrasikan teknologi sensor, perangkat ESP32, dan aplikasi seluler untuk menciptakan sistem parkir pintar yang canggih. Setiap tempat parkir akan dilengkapi dengan sensor yang terhubung secara real-time untuk mendeteksi keberadaan kendaraan dan mengirimkan informasi data ke server melalui ESP32. Data tersebut merupakan data ketersediaan tempat parkir yang dapat diakses oleh pengguna melalu aplikasi selalu secara real- time. Pengelolaan tempat parkir yang efektif ini diharapkan dapat mengurangi waktu pengguna untuk mencari ketersediaan tempat parkir yang kosong. Kinerja sistem dilakukan Kinerja sistem tersebut dianalisis berdasarkan beberapa parameter seperti keterlambatan deteksi, rentan jarak terdeteksi, ketahanan sumber daya, dan kecepatan respons aplikasi. Kata kunci— Aplikasi seluler, IoT (Internet of Things), Parameter analisis, Parkiran pintar.
Co-Authors Adi Kurniawan Saputro Agustia, Yesi Amanaturrizqi, Khomsanuha Anik Djuraidah Asep Andang, Asep Ayu, Putri Azhari, Tazkia Riska Alviana Chobir, Abdul Daskalakis, Christos Dwi Andini, Aisha Evi Sulastri Hanim, Wirda Hisny Fajrussalam Irawansyah, Ridwan Jasmidi Kamilatin, Tiara Lie Kartika Sari Khaerunnisa, Hanie Laili.S, Agnes Alvi Nur Magaretta, Desyana Olenka Nabilah, Khairun Nur Rahmawati Nurfitria, Rachma Oktavia, Denta Rizkiani Oktaviani, Anti Permas Hikmatunisa, Nenden Rina Mardiana Riza Alfita Rizky Maulana, Rizky Rosmana, Primanita Sholihah Ruswan, Acep Sri Astuti Suhendar, Ervina Sundari, Marta Uke Kurniawan Usman Uswatun Hasanah Wina Mustikaati Yuliet Yuliet Zia Fatimah, Alida Zulfa Luthfiyyah, Riska