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Comparison of Dengue Transmission in Lowland and Highland Area: Case Study in Semarang and Malang, Indonesia Fauzi, Ilham Saiful; Fakhruddin, Muhammad; Nuraini, Nuning; Wijaya, Karunia Putra
Communication in Biomathematical Sciences Vol 2, No 1 (2019)
Publisher : Indonesian Bio-Mathematical Society

Dengue is a potentially lethal mosquito-borne disease, regarded as the most dangerous disease in the world. It is also a major health issue in tropical and subtropical countries. Environmental characteristics and sociocultural are factors which play a role in the spread of dengue. Different landscape structure such as lowland and highland areas are possible to give different infection rate on dengue transmission. Semarang and Malang are densely populated areas in Java, which are selected to be our study areas. A mathematical model (SIR-UV) is adapted to describe dengue transmission. Spiral dynamic optimization is applied to convert monthly data to weekly in Malang and estimate the infection rate that minimized the deviation between dengue data and simulation. This method produces a good fitting to the data. We compare the pattern of dengue cases from the simulation in both cities. Furthermore, we identify seasonal variations of the cases via Fourier series of the infection rate. We also investigate the correlation between humidity, infection rate, and dengue cases in Semarang and Malang. It reveals that humidity influences infection rate in 1-3 weeks later and the infection rate produces dengue cases in the next four weeks.

Comparison of Dengue Transmission in Lowland and Highland Area: Case Study in Semarang and Malang, Indonesia Ilham Saiful Fauzi; Muhammad Fakhruddin; Nuning Nuraini; Karunia Putra Wijaya
Communication in Biomathematical Sciences Vol. 2 No. 1 (2019)
Publisher : Indonesian Bio-Mathematical Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/cbms.2019.2.1.3

Dengue is a potentially lethal mosquito-borne disease, regarded as the most dangerous disease in the world. It is also a major health issue in tropical and subtropical countries. Environmental characteristics and sociocultural are factors which play a role in the spread of dengue. Different landscape structure such as lowland and highland areas are possible to give different infection rate on dengue transmission. Semarang and Malang are densely populated areas in Java, which are selected to be our study areas. A mathematical model (SIR-UV) is adapted to describe dengue transmission. Spiral dynamic optimization is applied to convert monthly data to weekly in Malang and estimate the infection rate that minimized the deviation between dengue data and simulation. This method produces a good fitting to the data. We compare the pattern of dengue cases from the simulation in both cities. Furthermore, we identify seasonal variations of the cases via Fourier series of the infection rate. We also investigate the correlation between humidity, infection rate, and dengue cases in Semarang and Malang. It reveals that humidity influences infection rate in 1-3 weeks later and the infection rate produces dengue cases in the next four weeks.

OPTIMALISASI BAHAN AJAR MATA KULIAH STATISTIKA MELALUI PEMBUATAN MODUL STUDI KASUS BERBASIS PROBLEM BASED LEARNING Sutrisno, Sutrisno; Fauzi, Ilham Saiful; Selviana, Vuvut; Bakhrudin, Bakhrudin
EDUPEDIA Vol 7, No 2 (2023): Oktober
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/ed.v7i2.2377

In line with the goals of vocational education and the challenges of the fourth industrial revolution, Problem-Based Learning (PBL) has become one of the alternatives to enhance the quality of learning, with the hope that students can develop critical thinking skills to solve real-life problems. The approach used in this research is a development research approach based on the modified Plomp development model. Validation results indicate that the module meets the validity criteria with an average score of 3.60, with some revisions related to writing. Product testing was conducted with 24 students from 4 different classes. Research subjects were selected considering their heterogeneous cognitive abilities. Case study work was done in groups, with each group consisting of 3 students. The trial results show that the module meets practical criteria with an average score of 3.76. Therefore, the case study module for the statistics course is deemed suitable for use in learning.

Penerapan Algoritma Sweep dan Particle Swarm Optimization (PSO) sebagai Alternatif Menentukan Rute Distribusi Fauzi, Ilham Saiful; Wardani, Imaniah Bazlina; Putra, Indra Lukmana; Puspitasari, Peni
Faktor Exacta Vol 16, No 4 (2023)
Publisher : LPPM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/faktorexacta.v16i4.18962

One aspect of marketing activities is distribution. In the process of distributing goods, it is important to determine the optimal route that minimize mileage and reduce costs. This study aims to provide alternative solutions in determining distribution routes with the shortest distance which has implications for shorter travel times and lower costs. This research adapts the Capacitated Vehicle Routing Problem (CVRP) model with the approach of sweep and Particle Swarm Optimization (PSO) algorithm to determine the route. To generate a comparison route, we use the Nearest Neighbor (NN) algorithm. The result was that 100 agents were divided into 6 clusters and the total distance of the PSO-generated route is 218.115 units or 85.70% of the route distance generated by Nearest Neighbor algorithm.

Pengaruh Ukuran Perusahaan, Leverage, Profitabilitas, dan Pertumbuhan Penjualan terhadap Penghindaran Pajak Putra, Indra Lukmana; Fauzi, Ilham Saiful; Puspitasari, Peni
Forum Manajemen Vol 22 No 1 (2024): Jurnal Forum Manajemen April 2024
Publisher : STIMI Handayani Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61938/fm.v22i1.590

Pajak merupakan pendapatan yang digunakan untuk pengeluaran negara oleh pemerintah, namun bagi perusahaan, pajak merupakan suatu biaya yang dapat mempengaruhi laba yang dihasilkan. Latar belakang penelitian ini didorong oleh kompleksitas praktik penghindaran pajak yang sering dilakukan oleh perusahaan pertambangan untuk mengurangi kewajiban pajak mereka. Dalam konteks ini, faktor-faktor seperti Firm Size, Leverage, Profitabilitas, dan Sales Growth diidentifikasi sebagai variabel yang berpotensi memengaruhi praktik penghindaran pajak di sektor pertambangan. Tujuan penelitian ini adalah untuk mengidentifikasi pengaruh variabel-variabel tersebut terhadap praktik penghindaran pajak dalam entitas usaha pertambangan yang terdaftar di Bursa Efek Indonesia. Metode penelitian yang digunakan adalah analisis regresi data panel pada sampel 12 perusahaan pertambangan selama periode 2018 hingga 2021. Hasil penelitian menunjukkan bahwa Profitabilitas dan Sales Growth memiliki pengaruh negatif yang signifikan terhadap praktik penghindaran pajak, sementara Firm Size dan Leverage tidak berpengaruh secara signifikan. Kesimpulan yang dapat diambil adalah pentingnya perusahaan pertambangan untuk memperhatikan Profitabilitas dan Sales Growth dalam merancang kebijakan perpajakan yang efektif guna mengurangi praktik penghindaran pajak dan mematuhi kewajiban perpajakan yang berlaku. Taxes are income that is used to state spending by government, however for companies, tax is a cost that can affect the profits generated. The background of this research is driven by the complexity of tax avoidance practices commonly employed by mining companies to reduce their tax liabilities. In this context, factors such as Firm Size, Leverage, Profitability, and Sales Growth are identified as variables that may influence tax avoidance practices in the mining sector. The aim of this study is to identify the impact of these variables on tax avoidance practices in mining entities listed on the Indonesia Stock Exchange. The research method utilized is panel data regression analysis on a sample of 12 mining companies during the period 2018 to 2021. The results indicate that Profitability and Sales Growth have a significant negative impact on tax avoidance practices, while Firm Size and Leverage do not show significant influence. The conclusion drawn highlights the importance for mining companies to consider Profitability and Sales Growth in designing effective tax policies to reduce tax avoidance practices and comply with applicable tax obligations.

Pelatihan budgeting dan cost control pada komunitas binaan PT Mooi Malang Nugrahani, Novi; Rubianto, Aisyah Vanandia; Putra, Indra Lukmana; Fauzi, Ilham Saiful; Pupitasari, Peni; Handayani, Kuni Utami
Journal of Sustainable Community Development Vol. 3 No. 1 (2025): Journal of Sustainable Community Development
Publisher : MID Publisher International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.14440104

Pelatihan Penganggaran dan Pengendalian Biaya di Komunitas PT Mooi Malang merupakan wujud kemitraan PT Mooi Malang sebagai Mitra Politeknik Negeri Malang. Hal ini merupakan tindak lanjut dari MOU dan bagian dari keberlangsungan kerjasama kemitraan. Setelah melakukan survei singkat dengan Mitra, diketahui bahwa saat ini terdapat beberapa kendala yang dialami oleh Komunitas Binaan PT Mooi yaitu dalam penyusunan anggaran dan pengendalian biaya perusahaan. Oleh karena itu tujuan dari kegiatan ini adalah Pelatihan Penganggaran dan Pengendalian Biaya di Komunitas Binaan PT Mooi Malang sebagai akademisi untuk memupuk kerjasama dan solidaritas terhadap permasalahan yang dihadapi oleh komunitas mitra, menerapkan ilmu pengetahuan dan sudut pandang ilmiah untuk membantu menyelesaikan kendala dan mewujudkan Tridharma Pendidikan. Bagi PT Mooi Malang bermanfaat sebagai acuan dalam operasional perusahaan sehingga biaya yang dianggarkan dapat terkontrol dengan baik.

Analysis of Vocational Students’ Problem-Solving Competencies in Resolving Case Studies in Statistics: Analysis of Vocational Students’ Problem-Solving Competencies Fauzi, Ilham Saiful; Sutrisno, Sutrisno; Selviana, Vuvut; Bakhrudin, Bakhrudin
Journal of Vocational Education Studies Vol. 8 No. 1 (2025): Vol 8 No 1
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/joves.v8i1.11995

The rapid advancement of technology presents significant challenges, particularly in vocational education, where the aim is to produce skilled graduates ready for the workforce. This study analyzes the problem-solving competencies of vocational students when resolving case studies in Statistics courses. A descriptive qualitative approach was employed, involving 90 students divided into 30 groups as subjects. Primary data were gathered from the students' case study analyses, which were classified and analyzed according to Polya’s problem-solving stages. Findings revealed that students demonstrated varying levels of initiative in understanding problems and developing solutions. Specifically, 20% of the groups fell into the substance category, 46,67% into result, and 33,33% into completion. Substance groups struggled with planning and data collection, while result groups exhibited minor errors in implementing their plans, particularly in data processing and presentation. Meanwhile, completion groups showed a comprehensive understanding and effective problem resolution. The analysis of these problem-solving capabilities provides a foundation for a deeper evaluation of instructional effectiveness and the development of targeted teaching strategies.

EDUKASI FUNGSI KEMASAN UNTUK MENINGKATKAN PEMASARAN PRODUK USAHA MIKRO, KECIL, DAN MENENGAH DESA TULUSBESAR KECAMATAN TUMPANG KABUPATEN MALANG Fauzi, Ilham Saiful; Kartiko, Galuh; Sari, Padma Adriana; Arisudhana, Aditya; Nurfitriasih, Dyah Metha; Budiprayitno, Bambang
JUARA: Jurnal Wahana Abdimas Sejahtera Volume 6, Nomor 2, Juli 2025
Publisher : Jurusan Teknik Lingkungan Fakultas Arsitektur Lanskap dan Teknologi Lingkungan, Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/ztnsh894

Dalam persaingan bisnis yang sangat ketat, fungsi kemasan telah berkembang menjadi lebih kompleks, tidak hanya untuk melindungi produk dan memberikan keunikan, tetapi juga sebagai sarana untuk mendorong peningkatan penjualan dengan menarik minta konsumen. UMKM perlu menyadari bahwa investasi dalam desain kemasan yang baik dapat membawa dampak positif dalam meningkatkan daya saing produk. Sebagian pelaku UMKM di Desa Tulusbesar mengakui bahwa kemasan produk mereka masih sederhana dan kurang menarik. Kegiatan pengabdian pada masyarakat ini dilaksanakan dengan tujuan memberi pengetahuan dan keterampilan bagi pelaku UMKM dan industri rumahan dengan usaha di bidang makanan olahan untuk menghasilkan kemasan produk yang baik dan menarik. Kegiatan pengabdian dilaksanakan secara luring dan dihadiri oleh 10 peserta dengan jenis usaha yang berbeda-beda seperti keripik pisang, donat, madu, bakso, jamu, dan makanan basah. Kegiatan pengabdian terdiri dari edukasi fungsi kemasan, jenis-jenis kemasan, dan komponen penting dalam suatu kemasan. Selain itu juga disajikan contoh-contoh kemasan untuk menambah referensi para pelaku usaha dalam mendesain kemasan yang cocok untuk produk mereka. Berdasarkan hasil pengisian kuesioner diperoleh informasi bahwa kegiatan pengabdian yang dilakukan menawarkan solusi dari permasalahan yang ada pada mitra terkait pengemasan produk dan terjadi penguatan kemandirian dan peningkatan pengetahuan serta keterampilan mitra. Secara umum kegiatan pengabdian berjalan baik dan tepat sasaran sesuai dengan kebutuhan mitra dalam membuka jalan untuk presentasi produk yang lebih baik dan daya saing pasar yang lebih tinggi.

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