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Geometric Evaluation of Bends Implications for Traffic Performance: A Systematic Literature Review Wirdianto, Agus; Natawibawa K, Surya; Fadillah, Ahmad; Rijaluddin, Arief; Isradi, Muhammad
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 4 No. 2 (2025): Mei - Juli
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v4i2.1473

Abstract

Every accident that occurs inevitably involves injured or deceased victims. Cross-country analysis of accident rates at curves is often the focus of comparative research to identify risk factors and possible solutions. This study aims to systematically evaluate the implications of curve geometry design on traffic performance and driving safety. Road curves, particularly those that do not meet geometric standards, are known to be significant accident-prone areas. This study was conducted using a Systematic Literature Review (SLR) approach on 1,000 scientific articles obtained through Google Scholar using the Publish or Perish software. Analysis was conducted using VOSviewer to map keyword relationships, publication trends, and thematic classifications visually and statistically. The study results indicate that aspects such as curve radius, elevation, visibility, driver behavior, traffic signs, and environmental factors are the primary dimensions influencing curve performance. Bibliometric visualization revealed the dominance of related literature in developed countries and indicated a shift in research focus toward the use of technology and data to support safety. A conceptual framework was developed by integrating four dimensions: physical design, Environment, user behavior, and safety effectiveness. This research is expected to provide a theoretical and technical foundation for formulating safer road design standards and promoting the development of data-driven safety policies.
Environmental Factors Associated with Pulmonary Tuberculosis in Martapura’s Primary Health Center Rosadi, Dian; Lasari, Hadrianti Haji Darise; Tazkiah, Misna; Fadillah, Ahmad; Sepira, Yuli; Maulidah, Siti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 2 (2025): July 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i2.476-484

Abstract

Pulmonary TB continues to be a health problem as it is the leading cause of death and ranks 10th in the world. The number of TB cases in South Kalimantan Province reached 5,636. Based on district/city, the highest number of TB cases was in Banjarmasin City with 868 cases, followed by Banjar Regency with 817 cases and Banjarbaru City with 483 cases, while the lowest number was in Balangan Regency with 187 cases. The purpose of this study was to analyse the relationship between ventilation, floor type and lighting with the incidence of pulmonary tuberculosis in the working area of Martapura 1 primary health center, Banjar Regency. This study was an observational analytical study with a case-control design approach. The study population consisted of 90 respondents, 30 people as cases and 60 people as controls. There was an association between ventilation (p-value = 0.03, OR 95% CI 4.5) and the incidence of pulmonary TB. Floor type (p-value = 0.211) and lighting (p-value = 0.577) were not associated with the incidence of pulmonary TB in Martapura 1 Health Centre.
Penguatan Literasi Numerasi Pekerja Migran Indonesia (PMI) di Hong Kong Fadillah, Ahmad; Nopitasari, Dian; Bilda, Westi; Sukmawati, Rika; Yenni, Yenni; Subroto, Prawidi Wisnu
Aksiologiya: Jurnal Pengabdian Kepada Masyarakat Vol 7 No 1 (2023): Februari
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/aks.v7i1.10782

Abstract

Literasi numerasi dibutuhkan dalam setiap aspek kegiatan, baik pada rumah, sekolah atau lingkungan masyarakat. pada kehidupan sehari-hari ketika mengatur waktu, memilih lama pekerjaan, berbelanja, merencanakan liburan atau aktivitas lainnya membutuhkan kemampuan literasi numerasi. menggunakan kemampuan literasi numerasi, para PMI akan bisa memecahkan permasalahan yang berkaitan menggunakan matematika. Kemampuan yg terkait ialah kemampuan mengaplikasikan konsep sapta, pengukuran, operasi hitung, geometri, data dan pola serta menginterpretasikan isu kuantitatif yang ada di sekeliling. Guna memperkuat kecakapan numerasi bagi PMI, perlu ditingkatkan aktivitas kegiatan yang sesuai dengan muatan numerasi yaitu dengan mengadakan pelatihan secara online bagi para PMI di Hong Kong. Metode aktivitas ini ialah menggunakan melaksanakan training dan pendekatan pada mitra yang dituju, melaksanakan pelatihan dan evaluasi. hasil evaluasi pelatihan menyatakan bahwa aktivitas pelatihan ini sangat bermanfaat bagi para PMI di Hong Kong.
Identifikasi Pola Redistribusi Tanah Untuk Pendugaan Erosi Berdasarkan Nilai Suseptibilitas Magnetik di Daerah Bukit Nobita Kota Padang Fadillah, Ahmad; Budiman, Arif
Jurnal Fisika Unand Vol 12 No 4 (2023)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.12.4.639-645.2023

Abstract

Research has been carried out to identify soil redistribution patterns of soil redistribution as an estimate of erosion by analyzing the magnetic susceptibility values of soil samples in the Bukit Nobita area, Padang City. Soil samples were taken from two different areas, namely areas that are not vegetated and areas that are vegetated. The length of the track to each area is 100 m consisting of 10 points with variations in depth at each point, namely 10, 20, 30, 40, and 50 cm. The magnetic susceptibility measurement of the sample uses a Magnetic Susceptibility Meter with the commonly used frequencies, namely Low Frequency (LF) and High Frequency (HF). The measurement results show that for non-vegetatedareas, the χlfvalues range from 44 10-8 m3kg-1 to 301  10-8 m3kg-1, and theχhfvalue ranges from 43 10-8 m3kg-1 to 298.9 10-8 m3kg-1. Whereas for samples from vegetated areas, the χlf values range from 63.6 10-8 m3kg-1  to  859.410-8 m3kg-1, and the χhf ranges from 63.1 10-8 m3kg-1 to 852,5 10-8 m3kg-1. The results showed that the susceptibility value depends on the frequency (χfd), which is <2% and was dominated by large magnetic minerals that were disturbed, such as erosion. The distribution profile of χlf values tends to increase with increasing sampling depth, indicating that the soil in both tracks is disturbed, and the redistribution pattern of soil in non-vegetated areas is more evenly distributed than vegetated areas, allowing erosion to also occur in vegetated areas.
Blended Learning Model During the Covid-19 Pandemic: Analysis of Student’s' Mathematical Disposition Fadillah, Ahmad; Nopitasari, Dian; Pradja, Barra P
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 4, No 2 (2020): October
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v4i2.2582

Abstract

The purpose of this study is to describe the mathematical disposition of students who use blended learning during the Covid-19 pandemic. This research is a descriptive qualitative research. The research subjects were four students from the sixth semester of mathematics education study program. The research instrument was a student mathematical disposition questionnaire. The results of the study concluded that the average level of mathematical disposition of students was classified as moderate. If seen from the indicators, only the monitor and evaluate indicators are classified as high category. Indicators of persistence and perseverance, especially when lecturers present interesting contextual problems. Many indicators of curiosity arise when lecturers invite students to be active in learning, for example students are invited to study in groups. Many self-confidence indicators appear when lecturers ask students questions. While many flexible indicators appear when lecturers give open ended questions.
An Analysis of Students in Independent Learning of Analytic Geometry During the COVID-19 Pandemic Bilda, Westi; Fadillah, Ahmad
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 4, No 2 (2020): October
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v4i2.2575

Abstract

The purpose of this study is to analyse the independence of students learning on the flat analytic geometry of the Covid-19. This research was conducted on students in the second semester with 72 resopondents consisting of 15 males and 52 females. Data retrieval is carried out using a self-sufficiency study poll as many as 20 items of statements that have been compiled based on learning independence indicators. The scale used in this study was the Likert scale. Data analysis to know the independence of learning students used descriptive analytical techniques with the ideal criteria namely the ideal mean and the ideal deviation standard. Based on data analysis obtained by the results of independence of learning with indicators: a self- confident is good enough (31.75%), the activeness is quite good (37.50%), discipline is good (52.10%), and responsibility is good (64.57%).
Evaluasi Proses Produksi Menggunakan Pendekatan Statistical Process Control (SPC) Sebagai Upaya Pengendalian Produk Cacat Pada Industri Manufaktur: Evaluasi Proses Produksi Menggunakan Pendekatan Statistical Process Control (SPC) Sebagai Upaya Pengendalian Produk Cacat Pada Industri Manufaktur Kurnia, Hibarkah; Prastiya, Yoga Ari; Fadillah, Ahmad; Darmawan, Sandi
JURNAL TEKNIK INDUSTRI Vol. 6 No. 01 (2025): JURNAL TEKNIK INDUSTRI : MEI 2025
Publisher : DPPM UNIVERSITAS PELITA BANGSA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37366/jutin.v6i01.5944

Abstract

Kualitas produk merupakan salah satu faktor krusial dalam keberhasilan industri manufaktur. Produk cacat yang tinggi tidak hanya menurunkan efisiensi produksi, tetapi juga berdampak negatif terhadap kepuasan pelanggan dan citra perusahaan. Penelitian ini bertujuan untuk mengevaluasi proses produksi dengan menggunakan pendekatan Statistical Process Control (SPC) sebagai alat pengendalian kualitas guna meminimalkan jumlah produk cacat. Metode SPC yang diterapkan meliputi penggunaan control chart (peta kendali), histogram, serta analisis cause and effect diagram untuk mengidentifikasi titik-titik kritis dalam proses produksi. Studi dilakukan pada salah satu lini produksi di industri manufaktur yang bergerak di bidang komponen otomotif. Hasil evaluasi menunjukkan bahwa terdapat beberapa variabel proses yang berada di luar batas kendali, yang berkontribusi signifikan terhadap terjadinya cacat produk. Dengan penerapan SPC secara sistematis, perusahaan dapat mengidentifikasi penyebab variasi proses, melakukan tindakan korektif secara tepat waktu, serta meningkatkan kestabilan dan kapabilitas proses produksi. Penelitian ini menyimpulkan bahwa pendekatan SPC efektif dalam mendeteksi, mengendalikan, dan mengurangi produk cacat sehingga dapat meningkatkan kualitas dan efisiensi produksi di sektor manufaktur. Rekomendasi diberikan untuk penerapan SPC secara berkelanjutan dan pelatihan rutin bagi operator produksi. Kata Kunci: Statistical Process Control, Produk Cacat, Industri Manufaktur, Pegendalian Produk, Otomotif
Analysis Of Student Learning Independence On Blended Learning Model Fadillah, Ahmad; Nopitasari, Dian; Bilda, Westi; Immawati, Siti Asriah; Raharjo, Sigit
Kreano, Jurnal Matematika Kreatif-Inovatif Vol 13, No 2 (2022): Kreano, Jurnal Matematika Kreatif-Inovatif
Publisher : Mathematics Dept, Math. and Science Faculty, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/kreano.v13i2.38512

Abstract

This research aims to describe students' learning independence in math learning in trigonometric materials. The method used in this study is a qualitative approach with descriptive methods. Participants in this study were students of SMK Avicena Tangerang Regency which amounted to 25 participants. The technique used in collecting data in this study is to provide a learning independence questionnaire consisting of 25 statements with 6 indicators. The data analysis technique used is with the student's answer percentage formula and is described using the criteria of interpreting the percentage of answers. The results of the analysis of each indicator of learning independence are: 1) Not dependent on others 78%, 2) Confidence 74%, 3) Disciplined behavior 70%, 4) Sense of responsibility 80%, 5) Learning initiative 72%, 6) Self-control 76%. The results showed that the overall average independence of students in learning by 75% with high categories. The results of this study provide recommendations to the school to support and optimize the improvement of student learning independence.Penelitian ini bertujuan untuk mendeskripsikan kemandirian belajar siswa pada pembelajaran matematika pada materi trigonometri. Metode yang digunakan dalam penelitian ini ialah pendekatan kualitatif dengan metode deskriptif. Partisipan dalam penelitian ini adalah siswa SMK Avicena Kabupaten Tangerang yang berjumlah 25 partisipan. Teknik yang digunakan dalam mengumpulkan data pada penelitian ini ialah dengan memberikan angket kemandirian belajar yang terdiri dari 25 pernyataan dengan 6 indikator. Teknik analisis data yang digunakan yaitu dengan rumus persentase jawaban siswa dan dideskripsikan menggunakan kriteria penafsiran presentase jawaban. Hasil analisis tiap indikator kemandirian belajar yaitu: 1) Tidak tergantung kepada orang lain 78%, 2) Kepercayaan diri 74%, 3) Perilaku disiplin 70%, 4) Rasa tanggung jawab 80%, 5) Inisiatif belajar 72%, 6) Pengendalian diri 76%. Hasil penelitian menunjukan bahwa rata-rata secara keseluruhan kemandirian siswa dalam belajar sebesar 75% dengan kategori tinggi. Hasil penelitian ini memberikan rekomendasi kepada pihak sekolah untuk mendukung dan mengoptimalkan peningkatan kemandirian belajar siswa.
Analisis Literasi Matematika Siswa Dalam Memecahkan Soal Matematika PISA Konten Change and Relationship Fadillah, Ahmad; Ni’mah, Ni’mah
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 3, No 2 (2019): October
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (191.857 KB) | DOI: 10.31764/jtam.v3i2.1035

Abstract

Abstrak: Penelitian ini bertujuan untuk menganalisis literasi siswa SMA dalam memecahkan soal matematika. Jenis penelitian ini adalah penelitian kualitatif deskriptif. Hasil penelitian ini berupa deskripsi mengenai literasi matematika siswa yaitu merumuskan (formulate), menerapkan (employ), dan menafsirkan (interpret) dalam menyelesaikan soal Programme for International Students Assesment (PISA). Berdasarkan hasil penelitian diperoleh kesimpulan  bahwa literasi matematika dalam menyelesaiakan soal PISA mendapat nilai rata-rata sebesar 63,28% secara keseluruhan dari skor ideal. Literasi matematis siswa kategori rendah 31,24% (kurang), kategori sedang 72,39% (cukup), kategori tinggi 92,7% (baik). Kesalahan siswa dalam mengerjakan soal PISA secara umum terdapat pada indikator interpret (menafsirkan) dengan pencapaian sebesar 57,29%.Abstract:  This study aims to analyze the literacy of students of Senior  High School n solving math problems. This type of research is descriptive qualitative research. The results of this study are in the form of descriptions of students' mathematical literacy, namely formulating, applying, and interpreting in solving PISA questions. Based on the results of the study concluded that the mathematical literacy in solving PISA questions got an average value of 63.28% overall of the ideal score. Mathematical literacy of students in the low category 31.24% (less), the moderate category 72.39% (enough), the high category 92.7% (good). Student mistakes in working on PISA questions are generally found in the interpret indicator with an achievement of 57.29%.