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All Journal Science and Technology Indonesia Jurnal Review Pendidikan dan Pengajaran (JRPP) Diklat Review : Jurnal manajemen pendidikan dan pelatihan Syntax: Journal of Software Engineering, Computer Science and Information Technology Abdi Psikonomi Jurnal Sylva Lestari Tamansiswa International Journal in Education and Science (TIJES) Lattice Journal : Journal of Mathematics Education and Applied ILTEK : Jurnal Teknologi Chemedu: Jurnal Ilmiah Pendidikan Kimia Journal of Geographical Sciences and Education Control Systems and Optimization Letters QAZI : Journal of Islamic Studies Ruhul Tarbiyah (Jurnal Ilmiyah Kajian Agama Islam)
Ramadhani, Nur
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Validated Chromatography Method for Analysis of Formaldehyde Migration Levels in Bottled Drinking Water Ramadhani, Nur; Yulianty, Risfah; Rifai, Yusnita; Aswad, Muhammad; Alam, Gemini; Naid, Tadjuddin; Kasim, Athia Kurnia
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
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.2024.9.3.660-668

Abstract

Polyethylene terephthalate (PET) is utilized in the containment of potable water, nonetheless, it is susceptible to impairment due to temperature and duration of storage. Migration of formaldehyde from PET arises as a consequence of thermal deterioration. This study aims to ascertain the extent of formaldehyde transference in PET-contained drinking water of varying condition, subjected to diverse temperature setting and storage durations. An examination into the levels of formaldehyde migration in polyethylene terephthalate (PET) bottled drinking water was effectively carried out employing a validated high-performance liquid chromatography (HPLC) technique. A total of 162 water samples from three different PET bottled water brands sourced from supermarkets in Palu City, Central Sulawesi, Indonesia, underwent analysis. The formaldehyde assessment was executed utilizing a mobile phase composition of methanol:acetonitrile:water (48:12:40 v/v) for 12.97 minutes at a flow rate of 0.8 mL/minute on the 1st day, the 14th day, and the 42nd day while stored at room temperature and exposed to sunlight. Formaldehyde, lacking effective chromophoric entities and not readily ionizable, necessitated derivatization with 2,4-dinitrophenylhydrazine before HPLC analysis. The findings of the study demonstrated exceptional method linearity within the concentration span of 0.5 to 1321 µg/mL, exhibiting a commendable correlation coefficient of 0.999. The limit of detection (LOD) and quantification (LOQ) were determined to be 17.33 and 57.76 µg/mL, correspondingly. Precision evaluations displayed average intraday and interday values of 128.46±3.48% and 103.19±0.12%, respectively (%RSD < 2/3 CV Horwitz ratio). The intraday and interday %recovery values were computed at 97.22±3.48% and 96.83±0.14% (n = 6). The scrutiny of formaldehyde concentrations in the water samples unveiled the absence of formaldehyde migration.
Analisis Perubahan Penggunaan Lahan Pertanian Tanaman Mendong di Desa Blayu, Kecamatan Wajak Ramadhani, Nur; Kusufa, Roni Alim Ba'diya; Putra, Dwi Fauzia
Journal of Geographical Sciences and Education Vol 2 No 3 (2024): Journal of Geographical Sciences and Education
Publisher : PT. Pubsains Nur Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69606/geography.v2i3.125

Abstract

The mendong plant is one of the plants that is widely cultivated by people in Blayu Village, Wajak District. However, the number of farmers cultivating mendong plants is decreasing, so the agricultural land for mendong plants is starting to decrease. This research aims to: 1) analyze changes in land use for mendong crop farming in Blayu Village; and 2) know the factors that cause changes in agricultural land use for mendong crops. This research uses a descriptive survey method by collecting several samples in the form of people through questions. Google Earth was used to analyze changes in the use of agricultural land for mendong crops in Blayu Village from 2010 to 2024. Based on the results of the analysis of changes in agricultural land use for mendong crops in Blayu Village in 2010-2024, an increase in changes in the area of ​​mendong crops was obtained by 26.45 ha or 91.4 %. Meanwhile, the factors causing changes in the use of agricultural land for mendong plants in Blayu Village are economic factors, labor, mendong craftsmen, and the availability of mendong plant drying equipment.
Carbon Storage Potential and Economic Valuation in the Arboretum of Forest Area with Special Purpose (KHDTK) Aek Nauli, Indonesia Ramadhani, Nur; Wicaksono, Rezky Lasekti; Rahmadwiati, Rissa
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1057

Abstract

Sustainable forest management is expected to significantly contribute to preventing climate change and supporting the achievement of the Forestry and Other Land Use (FOLU) Net Sink 2030. This study aims to determine the potential for biomass storage and carbon and economic valuation in the Arboretum of Forest Area with Special Purpose (KHDTK) Aek Nauli, North Sumatra, Indonesia. This study used systematic sampling with random start as an inventory method. The estimation of above-ground carbon uptake used general allometric equations and benefit transfer methods for the economic value of carbon. This study found 62 species of woody plants with 5 species classified as endangered according to the International Union for Conservation of Nature (IUCN) Red List of Threatened Species, namely Agathis dammara, Dryobalanops aromatica, Tectona grandis, Pinus merkusii and Saurauia bracteosa. There are 734 individuals of woody plants, including 84% in the tree phase and 16% in the pole phase, with dominant species in both phases, namely Pinus merkusii and Schima wallichii. Potential biomass and carbon stocks in the pole phase were 4.76 tons/ha and 2.24 tons/ha, respectively, while in the tree phase were 338.69 tons/ha and 159.19 tons/ha. The total estimated carbon sequestration reached 592.42 tons.CO2e/ha. Carbon stocks’ total potential economic value is IDR 2,578,832,243 (USD 164,100). Therefore, the Arboretum of KHDTK Aek Nauli is considered to have the potential to support the achievement of the FOLU Net Sink 2030 target. It is expected that the potential economic value of carbon can be converted into real value and optimized through a carbon trading scheme to offset greenhouse gas emissions and support the sustainable management of KHDTK Aek Nauli. Keywords: benefit transfer, biomass, carbon trade, climate change mitigation, economic potential
Penerapan Metode Think Pair Share Pada Pembelajaran PAI Untuk Meningkatkan Keaktifan Belajar Siswa Kelas VIII di SMP Terpadu Tarbiyatun Nasyi’in Paculgowang Diwek Jombang Ramadhani, Nur; Umam, Khoirul
QAZI: Journal of Islamic Studies Vol 2 No 1 (2025): 2025
Publisher : PT.Hassan Group Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61104/qz.v2i1.255

Abstract

Riset ini bertujuan untuk mengkaji penggunaan metode Think Pair Share (TPS) dalam pembelajaran Pendidikan Agama Islam (PAI) serta dampaknya terhadap tingkat partisipasi belajar siswa kelas VIII di SMP Tarbiyatun Nasyi’in Paculgowang, Diwek, Jombang. TPS merupakan salah satu pendekatan pembelajaran kooperatif yang mencakup tiga tahap utama: berpikir mandiri, berdiskusi berpasangan, dan mempresentasikan hasil diskusi kepada seluruh kelas. Berdasarkan hasil penelitian, penerapan metode Think Pair Share (TPS) terbukti secara signifikan dapat meningkatkan keaktifan dan keterlibatan siswa dalam proses pembelajaran. Kepercayaan diri siswa juga meningkat karena mereka memiliki kesempatan untuk mempersiapkan diri dalam diskusi kecil sebelum berbicara di forum kelas. Selain itu, pemahaman siswa terhadap materi PAI menjadi lebih mendalam dan terstruktur. Guru berfungsi sebagai fasilitator yang membantu kelancaran diskusi serta membangun lingkungan belajar yang dinamis dan menyenangkan. Dengan demikian, pendekatan Think Pair Share terbukti efektif sebagai pendekatan untuk mewujudkan pembelajaran yang interaktif dan kolaboratif di lingkungan sekolah
Pengaruh Metode Mind Mapping dalam Model Discovey Learning terhadap Hasil Bealajr Peserta Didik Kelas XI MIPA SMAN 4 Wajo (Pada Materi Larutan Penyangga) Ramadhani, Nur; Sugiarti, Sugiarti; Salempa, Pince
ChemEdu Vol 6, No 1 (2025)
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/chemedu.v6i1.37993

Abstract

Penelitian ini adalah penelitian eksperimen semu yang bertujuan untuk mengetahui pengaruh metode Mind Mapping dalam model discovery learning terhadap hasil belajar peserta didik kelas XI MIPA SMAN 4 Wajo tahun pelajaran 2021/2022 pada materi larutan penyangga. Desain penelitian yang digunakan adalah posstest only control design. Populasinya adalah peserta didik kelas XI MIPA SMAN 4 Wajo yang terdiri dari 3 kelas. Pengambilan sampel dilakukan secara random sampling. Pengambilan sampel penelitian yaitu kelas XI MIPA Kreasi sebagai kelas eksperimen dan kelas XI MIPA Kolaborasi sebagai kelas kontrol. Variabel bebas penelitian adalah metode mind mapping pada model discovery learning dan model discovery learning tanpa mind mapping dan variabel bebas penelitian adalah hasil belajar peserta didik pada materi larutan penyangga. Data hasil penelitian diperoleh dengan memberikan tes hasil belajar pada materi larutan penyangga berupa post-test sebanyak 25 soal. Teknik analisis data dilakukan menggunakan statistik deskriptif dan statistik inferensial. Hasil analisis statistik deskriptif menunjukkan bahwa nilai rata-rata kelas eksperimen yakni 81,65 sedangkan kelas kontrol yakni 78,27. Hasil analisis prasyarat statistik inferensial hasil belajar menunjukkan bahwa data kelas eksperimen dan kontrol tidak terdistribusi normal serta memiliki varians yang homogen. Dengan demikian dilakukan uji non parametrik mann-whitney dengan α = 0,05 dan dk 1,64. Hasil uji mann-whitney diperoleh Zhitung > Ztabel (9,68 > 1,64), ini menunjukkan bahwa ada pengaruh metode mind mapping pada model discovery learning terhadap hasil belajar peserta didik kelas XI MIPA SMAN 4 Wajo pada materi larutan penyangga.
SISTEM MONITORING SISWA BERBASIS DSS TERHADAP PELANGGARAN SEKOLAH PADA MTS.S AL WASLIYAH TEMBUNG Ramadhani, Nur; -, Suherman; Amin, Muhammad
Syntax : Journal of Software Engineering, Computer Science and Information Technology Vol 6, No 1 (2025): Juni 2025
Publisher : Universitas Dharmawangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46576/syntax.v6i1.6958

Abstract

Menjaga kedisiplinan siswa sangat penting untuk menumbuhkan lingkungan belajar yang kondusif, namun banyak sekolah tidak memiliki pendekatan sistematis untuk mengatasi pelanggaran. Studi kami di Sekolah Al Wasliyah Tembung mengidentifikasi tren peningkatan pelanggaran siswa, yang disebabkan oleh tidak adanya sistem pemantauan yang terstandarisasi. Untuk mengurangi hal ini, kami mengusulkan dan mengevaluasi Sistem Pendukung Keputusan (DSS) yang dirancang untuk melacak pelanggaran siswa secara sistematis dan menginformasikan sanksi akademis. Dengan menggunakan metode Simple Additive Weighting (SAW), DSS mengklasifikasikan pelanggaran ke dalam kategori ringan, sedang, dan berat. Sistem ini menyediakan ikhtisar terstruktur dari data disiplin siswa, yang memfasilitasi pengambilan keputusan berdasarkan data untuk sanksi. DSS ini menawarkan alternatif penting untuk metode saat ini, yang bertujuan untuk meningkatkan efektivitas manajemen disiplin siswa. Hasil dari penelitian ini menunjukkan data siswa secara terstruktur dengan tingkat kategori, sehingga dapat mempermudah pemberian sangsi dengan berbasis data. Sistem monitoring ini diharapkan menjadi suatu alternatif, dari begitu banyak sistem yang sudah ada. 
Designing an Interactive Game Prototype as Teaching-Learning English Materials Based on Gamification and Indonesian Local Wisdom: The Initial Stages Revianti, Siska Lidya; Winarno, Basuki Heri; Astuti, Femi Dwi; Ramadhani, Nur
TAMANSISWA INTERNATIONAL JOURNAL IN EDUCATION AND SCIENCE Vol 5 No 1 (2023): October 2023
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/tijes.v5i1.15895

Abstract

The rapid changes in the era of Industrial Revolution 4.0 are an important driving factor in the digital transformation process, including the education sector. There are challenges and also great opportunities to improve the quality of education in Indonesia in the modern world. Nowadays, students can learn independently from various learning sources, including from games (gamification). It is hoped that by combining the gamification strategy, the students will have more motivation to study English in a fun way. This research aims to develop a prototype of 3D interactive computer game which includes the English material and also the local wisdom of Indonesia. This prototype will be used as the alternative in teaching-learning English materials in General English courses. The methodology of this research is ADDIE Instructional Design, which consists of 5 stages, namely: Analysis, Design, Development, Implementation and Evaluation. The Unity game engine is used to create a game called " The Legend of Dewi Rengganis" to learn English in a fun way by taking 5 themes in General English material. The content of the game is inspired by the Story of Dewi Rengganis as one of the local folklores in Indonesia. The local wisdom in the story can be used as a means of demonstrating the uniqueness of Indonesian culture. and supporting tourism programs in Indonesia. Material testing and functional testing will be carried out to see whether this game can be run properly. Multimedia experts, linguists and users (students) will be asked for their feedback by distributing questionnaires and interviews.
Implementation of PID Control for Angular Position Control of Dynamixel Servo Motor Ramadhani, Nur; Ma'arif, Alfian; Çakan, Abdullah
Control Systems and Optimization Letters Vol 2, No 1 (2024)
Publisher : Peneliti Teknologi Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59247/csol.v2i1.40

Abstract

Dynamixel servo motors, characterized by their compact size and high torque output, are made of high-quality materials that ensure the necessary strength and structural robustness against external forces. However, these motors are prone to overheating under certain internal conditions, such as temperature or supply voltage fluctuations during prolonged use. This research aims to design and apply PID control methodology to regulate Dynamixel servo motors. The research includes motor implementation using the PID method and subsequent testing with varying voltage inputs ranging from 11V to 12V. Addressing these issues involves using the Proportional Integral Derivative (PID) control method, widely recognized for its reliability in controlling motor speed. The research successfully designed Dynamixel servo motors capable of PID-controlled rotation according to predefined reference values. The motor's PID control design involved multiple trial runs - up to 5 instances - for each proportional, integral, and derivative control. The default PID parameter implementation did not match the setpoint; however, a re-tuned PID method yielded optimal results with parameter values Kp = 0.01000; Ki = 0.02703; Kd = 0.00005. Test results showed that the PID-controlled Dynamixel servomotor accurately achieved the expected angular output of 75°. In addition, tests using voltage inputs ranging from 11.00 to 12.00 volts showed stable operation without changing the servo motor's angular position before applying the PID control value, ensuring consistent motion even as the voltage drops.
Pengaruh Pembelajaran Kooperatif Tipe STAD terhadap Kemampuan Pemecahan Masalah Matematis Siswa Ramadhani, Nur; Ritonga, Mesra Wati; Pasaribu, Endi Zunaedy; Rahmi, Siska Yulia
Lattice Journal : Journal of Mathematics Education and Applied Vol. 2 No. 2 (2022): Desember 2022
Publisher : Universitas Islam Negeri Sjech M. Djamil Djambek Bukittinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30983/lattice.v2i2.6014

Abstract

The ability to solve mathematical problems is one of the competencies that must be mastered by students so that learning objectives are achieved properly. Therefore, an appropriate method is needed in learning mathematics at school. The purpose of this study was to determine whether there was an influence of Type STAD Cooperative Learning on the mathematical problem solving abilities of class X students of SMKS Siti Banun TA. 2020-2021. This type of research is quantitative with quasi-experimental methods. The sampling technique in this study was saturated sampling consisting of two classes with each class consisting of 38 students. The instrument used in this study was a test of mathematical problem solving abilities in the form of a description. The research hypothesis was analyzed using the t-test. Based on the results of the analysis, it was concluded that there was an influence of Type-STAD cooperative learning on the mathematical problem solving abilities of class X students of SMK Siti Banun TA. 2020-2021. This is evidenced by the results of the analysis with the help of the SPSS program which shows a significance number of 0,00 < 0,05.Kemampuan pemecahan masalah matematis merupakan salah satu kompetensi yang wajib dikuasai oleh siswa agar tujuan pembelajaran tercapai dengan baik. Oleh karena itu, diperlukan metode yang tepat dalam pembelajaran matematika di sekolah. Tujuan penelitian ini adalah untuk mengetahui ada tidaknya pengaruh Pembelajaran Kooperatif Tipe STAD terhadap kemampuan pemecahan masalah matematis siswa kelas X SMKS Siti Banun TA. 2020-2021. Jenis penelitian ini adalah kuantitatif dengan metode kuasi eksperimen. Teknik pengambilan sampel dalam penelitian ini yaitu sampling jenuh yang terdiri dari dua kelas dengan masing-masing kelas terdiri dari 38 siswa. Instrumen yang digunakan dalam penelitian ini berupa soal tes kemampuan pemecahan masalah matematis berbentuk uraian. Hiptesis penelitian dianalisis menggunakan uji-t. Berdasarkan hasil analisis, diperoleh simpulan bahwa terdapat pengaruh pembelajaran kooperatif Tipe-STAD terhadap kemampuan pemecahan masalah matematis siswa  kelas X SMK Siti Banun TA. 2020-2021. Hal ini dibuktikan dari hasil analisis dengan bantuan program SPSS yang menunjukkan angka signifikansi 0,00 < 0,05..
Pelatihan Penentuan Tujuan untuk Meningkatkan Regulasi Diri Belajar Tarmilia, Tarmilia; Yuliatun, Ismiyati; Ramadhani, Nur; Lestari, Sri
Abdi Psikonomi Vol 2, No 4 (2021): Desember 2021
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/psikonomi.v2i4.484

Abstract

Tujuan dari pengabdian masyarakat ini adalah meningkatkan self-regulated learning siswa. Hasil studi pendahuluan menunjukkan 26 dari 59 sampel keseluruhan siswa kelas 12 SMA Negeri 1 Boyolali memiliki skor SRL sedang Pelatihan goal setting diyakini dapat meningkatkan SRL siswa. Pelatihan lewat zoom terbagi dalam lima sesi yaitu: My Inspiration, Kenali Diriku, Kuraih Targetku, Umpan Balikku, dan Komitmenku, yang disampaikan oleh tiga pelatih dan diikuti 21 siswa. Self-regulated learning siswa diukur sebelum dan sesudah pelatihan. Hasil uji Wilcoxon Signed Ranks Test menggunakan SPSS menunjukkan kenaikan signifikan skor self-regulated learning dengan nilai Z -2.718 p 0,007. Perubahan dapat diketahui dari pernyataan siswa MS:” Saya akan lebih konsisten membagi waktu agar masuk universitas yang saya inginkan”. Pelatihan goal setting berhasil meningkatkan self-regulated learning siswa.
Co-Authors Alfian Ma’arif Andi Taufiq Umar Astari, Eka Saswita Widi As’ari, Hasim Aulia, Sabrina Erisa Badrianto, Risky Buana Putra, Muhammad Aswad Cakan, Abdullah Dwi Fauzia Putra, Dwi Fauzia Femi Dwi Astuti Gemini Alam Haslindah, Andi Heriyan, Dindi Kasim, Athia Kurnia Khoirul Umam Kusufa, Roni Alim Ba'diya Mas, Khairunnisa Umi Al Muhammad Amin Muhammad Aswad Pasaribu, Endi Zunaedy Peratiwi, Sonia Juwita Pince Salempa Purba, Nuraina Rabiatul Adawiyah Rahmadwiati, Rissa Rahmi, Siska Yulia Raja, Dahobert Lumban Ramadhani, Nurfatilah Revianti, Siska Lidya Risfah Yulianty Ritonga, Mesra Wati Riza, Fahru Sihombing, Kristya B C Siti Mardiah, Siti Sri Lestari Sugiarti Sugiarti Suherman -, Suherman Suradi Suradi Tadjuddin Naid Tarmilia, Tarmilia Wicaksono, Rezky Lasekti Winarno, Basuki Heri Yuliatun, Ismiyati Yusnita Rifai, Yusnita Zahara, Dwi Atika Zulhaini, Zulhaini