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All Journal Widya Warta JIEM JIPM (Jurnal Ilmiah Pendidikan Matematika) PYTHAGORAS: Jurnal Program Studi Pendidikan Matematika Al-Jabar : Jurnal Pendidikan Matematika EDUPEDIA de Fermat : Jurnal Pendidikan Matematika Journal Of Business, Finance, and Economics (JBFE) Gemilang: Jurnal Manajemen dan Akuntansi Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) QISTINA: Jurnal Multidisiplin Indonesia Jurnal Kesehatan Amanah Journal of Artificial Intelligence and Digital Business Cakrawala: Jurnal Pengabdian Masyarakat Global Al-Irsyad Journal of Mathematics Education Siber Journal of Transportation and Logistics Optimal: Jurnal Ekonomi dan Manajemen
Vigih Hery Kristanto
POLITEKNIK PELAYARAN SURABAYA
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Pengaruh Lamanya Waktu Tunggu (Waiting Time) Kapal Terhadap Efisiensi Proses Kegiatan Discharge dan Loading Batu Bara pada PT Adhika Samudera Jaya Ais Sanda Putra Trisna; Faris Nofandi; Vigih Hery Kristanto; Maulidiah Rahmawati
Journal Of Business, Finance, and Economics (JBFE) Vol 6 No 1 (2025): Juni : Journal Of Business, Finance, and Economics (JBFE)
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/jbfe.v6i1.6615

Abstract

To support the smooth operation of activities at the port and jetty, adequate facilities and operational systems are required. Long waiting times can reduce the efficiency of the loading and unloading process and hinder other operational processes. Delays can increase the operational cycle of ships, raise operational costs, and decrease port productivity. This study aims to examine the impact of ship waiting time on the efficiency of the coal discharge and loading process at PT. Adhika Samudera Jaya. Efficiency in the loading and unloading activities is crucial for increasing productivity and reducing operational costs. The research employs a quantitative method, with data collection through direct observation and documentation. The results indicate that the duration of ship waiting time significantly affects the efficiency of the discharge and loading process, where longer waiting times lead to longer loading and unloading durations. Key factors influencing waiting time include equipment readiness, weather conditions, shipping management, and cargo availability. By improving operational planning and speeding up facility readiness, the efficiency of the coal discharge and loading process can be optimized. This finding is expected to serve as a reference for companies and port authorities in improving the quality of coal loading and unloading services.
Pengaruh Sistem Single Submission Pengangkut terhadap Kepuasan Karyawan PT Trans Cakrawala Perkasa Cabang Benoa pada Saat Kegiatan Clearance In dan Out Ariska, Daffa Adiwidya; Dahri, Muhammad; Kristanto, Vigih Hery
RIGGS: Journal of Artificial Intelligence and Digital Business Vol. 5 No. 1 (2026): Februari - April
Publisher : Prodi Bisnis Digital Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/riggs.v5i1.7106

Abstract

Penerapan Sistem Single Submission Pengangkut (SSM Pengangkut) ditujukan untuk mendukung kelancaran proses clearance in dan clearance out kapal melalui sistem pelayanan terintegrasi. Penelitian ini bertujuan untuk mengetahui kendala atau hambatan yang dihadapi karyawan dalam penggunaan Sistem SSM Pengangkut serta menganalisis pengaruh penggunaan sistem tersebut terhadap tingkat kepuasan karyawan dalam mendukung kelancaran kegiatan clearance. Metode penelitian yang digunakan adalah metode kuantitatif dengan pendekatan deskriptif, melalui pengumpulan data menggunakan kuesioner, observasi, dan dokumentasi pada karyawan operasional PT Trans Cakrawala Perkasa Cabang Benoa. Data dianalisis menggunakan analisis deskriptif untuk menggambarkan kondisi kendala sistem dan tingkat kepuasan karyawan, kemudian dianalisis menggunakan uji validitas, reliabilitas, uji asumsi klasik, regresi linier sederhana, uji t, dan koefisien determinasi dengan bantuan SPSS. Hasil penelitian menunjukkan bahwa karyawan masih menghadapi berbagai kendala dalam penggunaan Sistem SSM Pengangkut, terutama pada aspek gangguan teknis sistem, keterbatasan fasilitas dan jaringan internet, lambatnya respons dukungan teknis, serta efisiensi proses input data. Selain itu, hasil penelitian juga menunjukkan bahwa penggunaan Sistem Single Submission Pengangkut berpengaruh terhadap tingkat kepuasan karyawan, di mana kendala yang masih terjadi menyebabkan tingkat kepuasan karyawan belum mencapai kategori optimal. Oleh karena itu, diperlukan peningkatan pada stabilitas sistem, infrastruktur pendukung, serta pelatihan dan dukungan teknis yang berkelanjutan guna meningkatkan kepuasan karyawan dan kelancaran kegiatan clearance in dan clearance out.
PENGARUH MODEL PEMBELAJARAN MAKE A MATCH TERHADAP PEMAHAMAN KONSEP MATEMATIKA SISWA Tanti Diyah Rahmawati; Tika Septia; Vigih Hery Kristianto; Vinsensius Herianto Ndori
Al-Irsyad Journal of Mathematics Education Vol 4 No 2 (2025): AL–IRSYAD JOURNAL OF MATHEMATICS EDUCATION
Publisher : Sekolah Tinggi Keguruan dan Ilmu Pendidikan Darud Da'wah Wal Irsyad Pinrang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58917/ijme.v4i2.225

Abstract

Kehidupan sehari-hari sangat bergantung pada matematika (Tasar et al., 2018). Berdasarkan hasil wawancara siswa SMPN 1 Waigete, matematika sering dianggap oleh siswa sebagai mata pelajaran yang menantang dan membosankan. Untuk menjawab permasalahan dalam matematika, seseorang harus mampu berpikir kritis (Rahmawati et al., 2024). Model pembelajaran kooperatif metode make-a-match merupakan salah satu strategi pembelajaran matematika yang harus dikembangkan agar dapat membantu siswa dalam memahami konsep matematika dan mengidentifikasi hubungan yang bermakna dalam menyelesaikan masalah. Oleh karena itu tujuan penelitian ini adalah untuk mengetahui apakah ada pengaruh model pembelajaran make a match iterhadap pemahaman konsep matematika siswa kelas VII di SMPN Waigete. Menggunakan metode penelitian kuantitaif dengan menguji hipotesis didapatkan hasil bahwa nilai t hitung yang diperoleh dari perhitungan uji-t adalah sebesar 2,52. Dengan derajat kebebasan (db) = 53 dan taraf signifikansi (α) = 0,05, maka nilai t tabel yang diperoleh dari tabel tersebut adalah 1,67. Seperti yang ditunjukkan oleh hasil perbandingan antara t hitung dan t tabel, t hitung lebih besar dari t tabel. Ini menunjukkan bahwa pendekatan pembelajaran Make A Match mempengaruhi pemahaman konsep matematika siswa SMPN 1 Waigete.
Formulating a Maritime Risk Matrix Based on Ancient Text Quantification: Man-Made versus Natural Risks Vigih Hery Kristanto; Suharto Suharto; Dyah Purwitasari; M. Anjar Pamungkas
Siber Journal of Transportation and Logistics Vol. 4 No. 1 (2026): (SJTL) Siber Journal of Transportation and Logistics (April - June 2026)
Publisher : Siber Nusantara Research & Yayasan Sinergi Inovasi Bersama (SIBER)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/sjtl.v4i1.910

Abstract

Contemporary maritime safety management generally relies on technical approaches, whereas historical analyses can provide a fundamental perspective regarding disaster taxonomy. This research aims to elaborate on the threat weight divergence between human-induced risk variables (Man-Made Risk) and Natural Risk extracted from a corpus of ancient texts, as well as to examine their implications for mapping the ALARP tolerance limits in maritime regulations. This study employs an explanatory quantitative approach integrating computational linguistics with the Formal Safety Assessment (FSA) framework. Ten maritime hazard keywords were converted into absolute numerical units using the Hisab Al-Jummal system of the Masyriqi school, normalized, and calibrated with empirical probabilities to map the Risk Score on a 5×5 matrix. The analysis results prove that Man-Made Risk, specifically the keyword zulm meaning negligence and regulatory violations clearly dominates the hazard hierarchy in the Unacceptable Region with the highest score. Conversely, natural physical threats such as high waves with the keyword mawj have been effectively reduced to acceptable levels due to the standardization of modern ship architecture. The findings indicate prioritize regulatory enforcement that extreme natural conditions essentially act as an initial trigger, while negative human intervention is the primary catalyst for mass maritime tragedies. In conclusion, the results of this study are crucial in encouraging a shift in maritime mitigation strategies so that they do not solely focus on avoiding extreme weather, but rather prioritize regulatory enforcement, regulatory audits, and the strengthening of safety culture.
Keefektivan Desain LKT untuk Memahami Penentuan Luas WP dan TPC Menggunakan Aturan Simpson 1/3 Wulan Marlia Sandi; Vigih Hery Kristanto; Eka Nurmala Sari Agustina; Tanti Diyah Rahmawati
JIPM (Jurnal Ilmiah Pendidikan Matematika) Vol. 14 No. 1 (2025)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/jipm.v14i1.23164

Abstract

Penelitian ini bertujuan untuk menguji keefektivan desain Lembar Kerja Taruna (LKT) dalam membantu taruna memahami perhitungan luas Waterplane (WP) dan Ton per Centimetre Immersion (TPC) menggunakan aturan Simpson 1/3. Permasalahan utama yang melatarbelakangi penelitian ini adalah masih banyaknya taruna yang mengalami kesulitan menghubungkan konsep integral dengan data numerik dalam konteks perkapalan. Penelitian dilaksanakan di Politeknik Pelayaran Surabaya dengan melibatkan 43 taruna Program Studi DIII Teknika dan DIV Teknik Rekayasa Permesinan Kapal (TRPK) sebagai subjek. Metode yang digunakan ialah kombinasi kualitatif dan kuantitatif dengan instrumen berupa catatan lapangan, kuesioner pendapat positif (KPP), dan tes kemampuan kognitif (TKK). Analisis kualitatif dilakukan melalui triangulasi data, sedangkan analisis kuantitatif menggunakan uji Wilcoxon karena data berdistribusi tidak normal. Hasil penelitian menunjukkan bahwa proses pembelajaran telah berpusat pada taruna, dosen melaksanakan pembelajaran secara sistematis, dan aktivitas taruna relevan dengan tujuan pembelajaran. Sebanyak 100% taruna memberikan pendapat positif terhadap LKT, serta hasil uji Wilcoxon menunjukkan adanya peningkatan signifikan kemampuan kognitif setelah pembelajaran. Dengan demikian, dapat disimpulkan bahwa LKT yang dikembangkan efektif mendukung pemahaman taruna dalam penerapan aturan Simpson 1/3 pada perhitungan WP dan TPC.   This study aims to examine the effectiveness of the Cadet Worksheet (LKT) in helping cadets understand the calculation of the Waterplane (WP) area and Ton per Centimetre Immersion (TPC) using Simpson’s 1/3 rule. The main problem underlying this research is that many cadets still find it difficult to connect integral concepts with numerical data in the context of shipping. The research was conducted at the Surabaya Maritime Polytechnic involving cadets from the DIII Marine Engineering and DIV Ship Machinery Engineering Technology programs as subjects. The method employed was a combination of qualitative and quantitative approaches using instruments such as field notes, a positive opinion questionnaire (KPP), and cognitive ability tests (TKK). Qualitative analysis was carried out through data triangulation, while quantitative analysis used the Wilcoxon test since the data were not normally distributed. The results indicated that the learning process was student-centered, the lecturer implemented the lessons systematically, and cadet activities were relevant to the learning objectives. A total of 100% of cadets gave positive opinions regarding the LKT, and the Wilcoxon test results showed a significant improvement in cognitive ability after the learning process. Thus, it can be concluded that the developed LKT is effective in supporting cadets’ understanding of the application of Simpson’s 1/3 rule in calculating WP and TPC.
Analisis Faktor Penghambat Proses Pengurusan Endors Sertifikat Class dan Statutory di PT Logindo Samudramakmur Tbk Adinda Hamit Cahyani; Indah Ayu Johanda Putri; Faris Nofandi; Vigih Hery Kristanto
OPTIMAL Jurnal Ekonomi dan Manajemen Vol. 5 No. 2 (2025): Jurnal Ekonomi dan Manajemen
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/optimal.v5i2.5889

Abstract

In Indonesia's shipping sector, ship certificates and documents are essential for verifying a ship's seaworthiness. One of the key certificates is the BKI, which consists of two types: statutory and class certificates. Statutory certificates are further divided into Marpol and Solas certificates. Marpol certificates include international and national types, while Solas certificates focus on ship safety and security. Class certificates cover the ship's hull and machinery. However, challenges often arise during the endorsement of both statutory and class certificates, requiring analysis to identify the factors that hinder the endorsement process and optimize these activities. This research uses a qualitative approach, with data collected from ships experiencing issues during the certificate endorsement period at PT. Logindo Samudramakmur Tbk between 2023 and 2024. The data collection techniques include observation, documentation, and literature review. The findings show that the biggest hindrance is the offshore location, which limits access to the area. Other factors, such as inappropriate findings onboard and bad weather, also contribute to delays. The research recommends optimizing access availability and performing routine ship maintenance to ensure the smooth and optimal operation of certificate endorsement activities.
Co-Authors Adinda Hamit Cahyani Ais Sanda Putra Trisna Alfiana Noor Fajari Amelia, Jessica Cikitha Anggraeni, Anggita Adelia Anton, Antonius Antonius Anton Ariska, Daffa Adiwidya Arisusanty, Dian Junita Aryulandia Sanditama Betan, Elisabeth Titi Bugi Nugraha Bugi Nugraha Dhany Fachrudin, Achmad Diyah Purwitasari Dyah Purwitasari Eka Nurmala Sari Agustina, Eka Nurmala Sari Elisabeth Titi Betan Elly Kusumawati Elsa Maulinda Savana Fahrezi, Irgi Ahmad Faris Nofandi Faris Nofandi Inaya Ajeng Larasati M. Anjar Pamungkas Marcellinus Andy Rudhito Maulana, Moch Rabbul Maulidiah Rahmawati Mohammad Arif Rahmadhani Muhammad Dahri, Muhammad Nabila Aisya Savitri Nurdiansari, Henna Putri, Indah Ayu Johanda Rahajeng, Resty Rahmawati, Maulidiah Resty Rahajeng Rohmawati, Elok Romanda Annas Amrullah Sandi, Wulan Marlia Sanditama, Aryulandia Santoso, Fransiskus Gatot Iman Sianturi, Intan Suharto Suharto Tanti Diyah Rahmawati Tika Septia Tika Septia Vinsensius Herianto Ndori Wulan Marlia Sandi