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ADAPTIVE MULTIRESOLUTION SEMIPARAMETRIC MODEL INTEGRATING TRUNCATED SPLINE AND WAVELET TO BALINESE VILLAGE CREDIT INSTITUTIONS (LPD) Mariati, Ni Putu Ayu Mirah; Sudiarsa, I Wayan; Kumalasari, Putu Diah
Jurnal Ilmiah Ilmu Terapan Universitas Jambi Vol. 10 No. 2 (2026): Volume 10, Nomor 2, April 2026
Publisher : LPPM Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jiituj.v10i2.53877

Abstract

In this research, an adaptive multiresolution semiparametric regression approach is proposed to examine the financial performance of Lembaga Perkreditan Desa (LPD) in Bali, Indonesia. In the research, the problem that arises from the inadequacy of traditional regression techniques in accounting for the nonlinear pattern in the data and the financial instability is overcome by introducing the truncated spline and wavelet components into the semiparametric regression analysis.This research utilizes a quantitative method based on secondary financial information collected for 50 LPDs between 2015 and 2024, providing around 500 observations. In order to obtain a more consistent dataset, the purposive sampling method will be used. Return on Assets (ROA) is chosen as the dependent variable, and explanatory variables include interest rates, the number of customers, capital adequacy ratio (CAR), total assets, and non performing loans (NPL). The model will be estimated using the penalized least squares with iterative backfitting estimation technique and will be assessed using the RMSE, MAE, and R² criteria based on Kfold cross validation. As it can be seen from the results, the hybrid model significantly improves the predictive power of traditional linear and spline methods, providing smaller error rates and better fit quality. Spline functions help to determine long term trends, whereas wavelets capture short term effects. This shows that multiresolution modeling increases predictability and interpretability. The model has practical utility for financial management and regulation through adaptive risk management and decision-making processes in microfinance firms.
Rancang Bangun Sistem Pendeteksi Kebocoran Gas Secara Portable pada Distributor Gas Rumah Tangga Zamzak , M.Arif; Sudiarsa, I Wayan; Putra , I Dewa Putu Gede Wiyata
Jurnal Kendali Teknik dan Sains Vol. 1 No. 3 (2023): Juli: Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v1i3.1058

Abstract

In this research we design and build a portable gas leak detection system for household gas distributors. The performance of the designed system is described and evaluated. The system aims to speed up the time in detecting gas leaks. System portability allows implementation and monitoring in the form of a website. System design and performance are assessed and proven effective in detecting gas leaks, providing a reliable and efficient solution for gas distributors. The method used is the conditional method where the gas leak detection system is made with Nodemcu esp8266, sensor mq6, buzzer, step-down lm2596, and led. The results obtained from testing the leak detection system explain the testing and evaluation of the gas cylinder inspection system. The system is designed to check 3kg gas cylinders, category level 1 with numbers 300-500, category level 2 with numbers 500-750, category level 3 with numbers 750-1000, and category level 4 with numbers higher than 1000. Detection of gas leaks in each valve takes about 13 seconds to detect leaking gas, send data to the website and provide output to the buzzer.
ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL CERITA MATERI TRIGONOMETRI DI SMK PGRI 1 DENPASAR TAHUN AJARAN 2024/2025 Ni Wayan Anggreni Prabawati Sutrisna; I Wayan Sudiarsa; I Made Surat
Prosiding SENAMA PGRI Vol. 4 (2026): Volume 4 Tahun 2026
Publisher : Program Studi Pendidikan Matematika Universitas PGRI Mahadewa Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59672/senama.v4.5142

Abstract

ABSTRAK Penelitian analisis kesalahan dalam menyelesaikan soal cerita materi trigonometri ini bertujuan untuk mengetahui jenis kesalahan yang dilakukan siswa serta penyebab terjadinya kesalahan tersebut. Jenis penelitian ini merupakan penelitian Kualitatif yang dilakukan di SMK PGRI 1 Denpasar dengan subjek penelitian yang terdiri dari 2 kelas yaitu kelas X Gabungan dan kelas X TKR. Pada penelitian ini, data didapatkan dari tes kemampuan siswa serta wawancara dimana, instrumen yang digunakan berupa tes uraian sebanyak 5 butir soal guna memeroleh data mengenai jenis kesalahan yang dilakukan dan dilanjutkan dengan wawancara guna mengetahui lebih dalam mengenai faktor penyebab dari kesalahan yang dilakukan. Hasil penelitian menunjukkan bahwa dari 5 soal yang diberikan, jenis-jenis kesalahan yang dilakukan oleh siswa kelas X SMK PGRI 1 Denpasar dalam menyelesaikan soal cerita materi trigonometri menurut kategori Kesalahan Newman, antara lain: Kesalahan membaca (Reading Error) dilakukan sebanyak 18 kali dengan persentase sebesar 5.17%, kesalahan memahami masalah (Comprehension Error) dilakukan sebanyak 88 kali dengan persentase 25.29%, kesalahan transformasi (Transformation Error) dilakukan sebanyak 85 kali dengan persentase 24.43%, kesalahan keterampilan proses (Process Skills Error) dilakukan sebanyak 44 kali dengan persentase 12.64%, dan kesalahan penulisan jawaban (Encoding Error) 113 kali dengan persentase 32.47%. Faktor-faktor penyebab terjadinya kesalahan yang dilakukan oleh siswa yaitu: 1) kesalahan membaca (Reading Error): subjek kurang teliti dalam membaca kalimat dalam soal, siswa salah membaca informasi berupa angka atau simbol pada soal sehingga keliru pada langkah penyelesaian selanjutnya, 2) kesalahan memahami masalah (Comprehension Error): subjek kurang teliti membaca dan mengartikan soal, subjek tidak memahami konsep pada soal yang diberikan, 3) kesalahan transformasi (Transformation Error): subjek tidak memahami konsep dasar yang berkaitan dengan konteks soal, 4) kesalahan keterampilan proses (Process Skills Error): subjek kehabisan waktu ketika menjawab soal, subjek tidak teliti melakukan proses perhitungan, subjek terburu-buru untuk menyelesaikan jawaban, 5) kesalahan penulisan jawaban (Encoding Error): subjek kehabisan waktu, subjek terburu-buru mengerjakan soal. Kata Kunci: Analisis Kesalahan, Soal Cerita, Trigonometri, Kategori Kesalahan Newman. ABSTRACT This study aims to identify the types of errors made by students and the causes of these errors in solving word problems related to trigonometry. This research is a qualitative study conducted at SMK PGRI 1 Denpasar, with research subjects consisting of two classes, namely class X Gabungan and class X TKR. In this study, data were obtained from student ability tests and interviews, using essay test instruments consisting of 5 questions to obtain data on the types of errors made, followed by interviews to explore the underlying factors of the errors committed. The results of the study showed that from the five questions given, the types of errors made by students of class X at SMK PGRI 1 Denpasar in solving trigonometry word problems according to the Newman Error Category, included: Reading Errors occurred 18 times (5.17%), Comprehension Errors occurred 88 times (25.29%), Transformation Errors occurred 85 times (24.43%), Process Skills Errors occurred 44 times (12.64%), and Encoding Errors occurred 113 times (32.47%). The factors causing these errors are as follows: 1) Reading Error: students were not careful in reading the sentences in the questions; they misread numerical information or symbols in the questions, leading to errors in the next steps. 2) Comprehension Error: students were not careful in reading and interpreting the questions; they did not understand the concepts presented in the problems. 3) Transformation Error: students did not understand the basic concepts related to the context of the problem. 4) Process Skills Error: students ran out of time when answering the questions, were not careful in performing calculations, or rushed to complete the answers. 5) Encoding Error: students ran out of time and hurried in answering the questions. Keywords: Error Analysis, Word Problems, Trigonometry. Newman’s Error Categories.
Eksplorasi Pengalaman Belajar Siswa Melalui Media Ular Tangga Dalam Pembelajaran Matematika Ayu Sri Dewi; I Wayan Sudiarsa
Prosiding SENAMA PGRI Vol. 4 (2026): Volume 4 Tahun 2026
Publisher : Program Studi Pendidikan Matematika Universitas PGRI Mahadewa Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59672/senama.v4.6116

Abstract

Pembelajaran matematika sering menghadapi tantangan terkait keterlibatan dan pemahaman siswa, terutama ketika metode tradisional dominan digunakan. Penelitian ini bertujuan mendeskripsikan pengalaman belajar siswa dalam menggunakan media permainan ular tangga pada materi operasi bilangan bulat di SMP Negeri 8 Denpasar. Penelitian menggunakan desain deskriptif kualitatif dengan fokus pada pengalaman pengguna (user experience) yang mencakup dimensi daya tarik, kejelasan, efisiensi, ketepatan, stimulasi, dan kebaruan. Data dikumpulkan melalui User Experience Questionnaire (UEQ) dan dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa media ular tangga dipersepsikan positif oleh siswa pada sebagian besar dimensi, dengan daya tarik, efisiensi, dan kebaruan berada pada kategori above average, serta kejelasan dan stimulasi pada kategori good, sementara ketepatan berada pada kategori below average. Temuan ini mengindikasikan bahwa media permainan ular tangga dapat meningkatkan keterlibatan, motivasi, dan pemahaman konsep matematika secara lebih interaktif dan menyenangkan, meskipun aspek teknis seperti konsistensi dan ketepatan respon masih perlu penyempurnaan. Penelitian ini memberikan kontribusi praktis bagi guru dalam merancang media pembelajaran yang berorientasi pada pengalaman siswa dan memperkaya kajian teoretis mengenai integrasi perspektif user experience dalam pendidikan matematika.
Co-Authors A. A. Gde Ekayana Agung Ari Chandra Wibawa Agung Narayana Adhi Putra Andika, I Gede Aniek Suryanti Kusuma Ariana, Anak Agung Gede Bagus Ariani, Komang Aslin Thanelab Nope Augreselia Novita Nuer Ayu Sri Dewi Brian Adi Sapurta Dewa Ayu Ika Pramitha Dewa Ayu Putu Angelina Dewi Dewa Ayu Sri Handani Dewa Gde Agung Wisnu Anantha Dewa Putu Yudhi Ardiana Dirgayusari, Ayu Manik Gandika Supartha, I Kadek Dwi Gde Wardika Nugraha Gede Agus Santiago Giri, Putu Agus Semara Putra Gusti Ngurah Abhimanyu I Dewa Made Krishna Muku I Dewa Putu Juwana I Gede Adnyana I Gede Andika I Gede Iwan Sudipa I Gusti Ayu Anom I Gusti Made Aditya Putra I Gusti Ngurah Agung Putra Wijaya I Gusti Ngurah Galih Jimbar Baskara I Gusti Ngurah Rangga Mahesa I Kadek Adi Erawan I Kadek Adi Gunawan I Kadek Yukiarta Putra I Ketut Okta Suastika I Komang Dika Setiawan I Komang Hari Sastrawan I Komang Sukendra I Made Jagat Dita I Made Suarta I Made Suarta I Made Surat I Nyoman Agus Suarya Putra I Nyoman Buda Hartawan I P.Fajar Adi Pradipta I Putu Dicky Dharma Suryasa I Putu Diva Naratama I Putu Kabinawa Raesa Putra I Wayan Dharma Suryawan I Wayan Eka Saputra I Wayan Manik Mas Sri Dantya I Wayan Sumandya I Wayan Surya Rahadi Ida Ayu Agung Ekasriadi Indra Pratistha Jepri Martana, I Nyoman Kadek Bagus Karunia Dwi Dharmayasa Kadek Suryati Koda, Andrianus Koda, Moh M. Azmi Koda, Stanisilia D. Wero Koten, Felixiana Made Hanindia Prami Swari Maharianingsih, Ni Made Maria Karlinda Maria Oktaviani Suryati Mitan, Maria M Ndinin, Maria Avilia NI KADEK RINI PURWATI Ni Luh Putu Sandrya Dewi Ni Made Dwi Junita Sariyani Ni Made Lisma Martarini Ni Made Sukma Sanjiwani Ni Nyoman Padmawati Ni Nyoman Wahyu Udayani Ni Nyoman Yudianti Mendra Ni Putu Ayu Mirah Mariati NI PUTU AYU MIRAH MARIATI Ni Putu Kania Mahadina Ni Putu Sri Indah Wulandari Ni Wayan Anggreni Prabawati Sutrisna Ni Wayan Karitha Pradnyandari Ni Wayan Sunita Pande Wisnu Wijaya Putra Pande, Ni Kadek Nita Noviani Pera, Magdalena Matildis Palo Pramana, I Made Wisnu Yoga Puguh Santoso Putra , I Dewa Putu Gede Wiyata Putra, I Made Agus Sunadi Putri Maria Theresia Kehi Putu Agus Aditya Putra Putu Diah Kumalasari Putu Paramita Rusaldi PUTU SUGIARTAWAN Rahadi, I Wayan Surya Sanjiwani, Ni Made Sukma Sanjiwani, Ni Made Sukma Sanjiwani Sastaparamitha, Ni Nyoman Ayu J. Satwika, I Kadek Susila Setya Cahyani, I Gusti Ayu Agung Dwita Socatama, I Putu Yoga Suradana, I Made Suyitno, Yoga Kristian Syamsiar, Syamsiar Tebai, Elisabeth Lydia Trisnawati, Ni Komang Wardani, Ni Wayan Wayan Surya Rahadi Willdahlia, Ayu Gede Wiyata Putra, I Dewa Putu Gede Yosefina Dehadi Yulianus Kevin Dharmawa Sagur Yustinus Liguori Yuvensia Armelia Sumu Zamzak , M.Arif