Universitas Maritim Raja Ali Haji Pusat Jurnal Ilmiah
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PELATIHAN PEMBUATAN SABUN MANGROVE UNTUK MENINGKATKAN KREATIVITAS DAN EKONOMI MASYARAKAT DESA EKANG ANCULAI, KABUPATEN BINTAN
Full text linkProgram pelatihan pembuatan sabun mangrove dilaksanakan di Desa Ekang Anculai, Kabupaten Bintan, sebagai upaya pemberdayaan masyarakat melalui pemanfaatan sumber daya lokal secara berkelanjutan. Kegiatan ini memanfaatkan ekstrak daun pedada (Sonneratia caseolaris) yang kaya akan senyawa bioaktif seperti flavonoid, tanin, dan saponin dengan fungsi antibakteri dan antioksidan. Metode pelaksanaan meliputi observasi, koordinasi dengan pemerintah desa, penyampaian materi, praktik langsung, serta dokumentasi. Sebanyak 21 peserta mengikuti kegiatan dengan partisipasi aktif, dan sekitar 90% berhasil menghasilkan sabun berkualitas baik dengan tekstur padat, pH 7–8, serta variasi kreatif dari segi aroma maupun tampilan. Hasil kegiatan menunjukkan bahwa pelatihan ini mampu meningkatkan kreativitas masyarakat, memperkuat kesadaran akan pentingnya menjaga ekosistem mangrove, sekaligus membuka peluang ekonomi melalui produk bernilai tambah. Dengan demikian, inovasi sabun mangrove dapat menjadi alternatif diversifikasi pendapatan masyarakat pesisir sekaligus mendukung pembangunan berkelanjutan di Desa Ekang Anculai
EFFECTIVENESS OF THE APPLICATION OF THE PROBLEM BASED LEARNING MODEL BASED ON KAMPAR CULTURE TOWARDS IMPROVING STUDENTS\u27 MATHEMATICAL REPRESENTATION ABILITIES
Full text linkThis research is motivated by the importance of mathematical representation ability. The results of the field study indicate that students\u27 mathematical representation ability falls in the low category because they are not given the opportunity to develop their representations during the mathematics learning process. The purpose of this study is to determine the effectiveness of the Kampar culture-based Problem Based Learning model to improve students\u27 mathematical representation ability. The Kampar culture used is traditional Kampar clothing, traditional Kampar games, traditional Kampar musical instruments, and traditional Kampar food. The study population is all students of SMA N in Bangkinang City; the sample of this study is grade X students of SMA N 2 Bangkinang City. The data collection technique used is the test technique. The data analysis techniques used are the normality test, the homogeneity test, the t-test, and the one-way ANOVA. The results of the study indicate that there is effectiveness in applying the Kampar culture-based PBL model to mathematical representation ability viewed from the overall students, and there is effectiveness in applying the Kampar culture-based PBL model to mathematical representation ability viewed from the level of students\u27 abilities.This study is motivated by the importance of mathematical representation ability. The reality shows that students\u27 mathematical representation ability is included in the low category because students are not given enough opportunities to bring up their representations during the mathematics learning process. The purpose of this study was to determine the effectiveness of the Kampar culture-based Problem Based Learning model to improve students\u27 mathematical representation ability. The Kampar culture used is traditional Kampar clothing, traditional Kampar games, traditional Kampar musical instruments, and traditional foods found in Kampar. The population of the study was all students of SMA N in Bangkinang City, the sample of this study was class X students of SMA N 2 Bangkinang City. The data collection technique used was the test technique. The results of the study showed that there was an influence of the Kampar culture-based PBL model on mathematical representation ability in terms of all students and there was an influence of the application of the Kampar culture-based PBL model on mathematical representation ability in terms of student ability leve
Development of instruments of higher order thinking skills (HOTS) for phase D students
Full text linkThis research aims to develop test instruments for Higher Order Thinking Skills (HOTS) that are validated, reliable, and possess excellent discrimination power, as well as appropriate levels of difficulty. These tools are intended to boost the advanced thinking abilities of students at phase D. According to the Organization for Economic Cooperation and Development (OECD) report on December 5, 2023, which analyzed the 2022 Program for International Student Assessment (PISA) scores in mathematics, including HOTS questions, there has been a notable worldwide decline. Specifically, Indonesia ranked 68th, with a math score of 379. The focus of this study is on developing HOTS test tools that address topics such as relations, functions, linear equations, and systems of two-variable linear equations, drawing from the AKM (Minimum Competency Assessment) and HOTS mathematics question books. The HOTS questions are designed to encompass cognitive levels C4 (analyzing), C5 (evaluating), and C6 (creating), following the revised Bloom\u27s Taxonomy by Krathwohl and Anderson. As highlighted by the Ministry of Education, Culture, Research, and Technology (2022), the development of HOTS questions must include elements such as (1) incorporating stimuli and (2) presenting new contexts within the material or question formulation. The questions are constructed in essay format, adhering to standards for validity and reliability, as well as optimal difficulty and discrimination levels. This study employs a development model comprising two phases: the preliminary phase, which involves analysis and design, followed by the formative evaluation phase, encompassing self-evaluation, expert review, one-on-one sessions, small group interactions, and field tests. The outcome of this study produced 17 valid questions with a reliability coefficient of 0.848; 14 questions exhibited strong discrimination power, and 3 demonstrated adequate discrimination power, with all 17 HOTS questions classified in the medium difficulty range
The effect of PMRI assisted by augmented reality on circle for students’ problem-solving ability
Full text linkMathematical problem-solving ability among students remains low in conventional learning environments. The integration of Augmented Reality (AR) into the Indonesian Realistic Mathematics Education (PMRI) approach facilitates visualization of abstract concepts and promotes contextual learning. This study analyzes the effect of PMRI-based circle learning assisted by AR on students\u27 problem-solving abilities. A quantitative approach was employed using a One Group Pretest pretest-posttest design with 35 eleventh-grade students from SMA Srijaya Negara Palembang. Data were collected through a mathematical problem-solving test based on Polya\u27s four stages: understanding the problem, devising a plan, carrying out the plan, and looking back, administered before and after the intervention. The Shapiro–Wilk test indicated that the data were normally distributed (pretest = 0.084; posttest = 0.309, both > 0.05). Paired sample t-test analysis revealed a pretest mean score of 19.37 and a posttest mean score of 66.51, with a mean difference of 47.14. The t-test result (t = -23.053, Sig. (2-tailed) < 0.001) indicated a significant difference between pretest and posttest scores. These findings demonstrate that the PMRI-based learning design assisted by AR is effective in improving students\u27 problem-solving abilities through contextual learning experiences and interactive visualization. The results suggest that integrating PMRI with Augmented Reality in circle learning represents an effective instructional innovation for enhancing students\u27 problem-solving abilities
Transformasi SDM: Dampak Peningkatan Kompetensi Digital dan Penerapan Budaya Agile terhadap Produktivitas Kerja di Sektor Elektronik Batam
Full text linkThis study aims to analyze the effect of digital competence and agile work culture on employee performance in the era of industrial transformation 4.0. The background of this research is driven by the phenomenon of technical skills gaps and cultural adaptation challenges in the electronic manufacturing sector in Batam City. The research method employed is quantitative, utilizing questionnaires distributed to 100 employees at the Batamindo Industrial Park. The data were analyzed using the Structural Equation Modeling (SEM) method based on Partial Least Squares (PLS) with SmartPLS 3.0 software. The results indicate that: (1) Digital competence has a positive and significant effect on employee performance, and (2) Agile work culture has a positive and significant effect on employee performance. Simultaneously, both variables contribute an influence of 67.8% on employee performance. The conclusion of this study emphasizes that digital upskilling strategies combined with flexible cultural transformation are key determinants in increasing productivity in the modern manufacturing industr
The Effect of Welding Current on the Mechanical Properties of AISI 1040 Steel and AISI 1020 Steel in Bimetal Welding Using the Shielded Metal Arc Welding Method with AWS E 7016 Electrodes
Full text linkThis article discusses bimetal welding between AISI 1040 steel and AISI 1020 steel using the Shielded Metal Arc Welding (SMAW) method with AWS E 7016 electrodes. The purpose of the study was to evaluate the quality of the welded joint, including the mechanical properties and microstructure of the bimetal welding results. The use of high-strength AISI 1040 steel and AISI 1020 steel with malleable properties aims to produce a joint that optimizes the characteristics of each material. The welding process was carried out with varying current parameters to determine its effect on the welding results. Testing included tensile testing, hardness testing, impact testing, and microstructure analysis. The results showed that variations in welding parameters affected the mechanical properties of the joint and the distribution of microstructures in the weld zone, heat-affected zone (HAZ), and base metal. The optimal welded joint was obtained by setting certain current parameters that produced maximum tensile strength and even hardness distribution. This study contributes to the development of bimetal welding technology, especially for applications that require a combination of mechanical properties of two types of steel
ANALISIS FAKTOR PENDORONG PERDAGANGAN PEREMPUAN INDONESIA KE KAMBOJA DAN STRATEGI PEMULANGAN YANG EFEKTIF (STUDI KASUS TPPO DI KABUPATEN KARIMUN)
No full textHuman Trafficking Crimes (TPPO) are transnational crimes that violate human rights and have serious impacts on victims, especially women. This article aims to analyze the driving factors behind TPPO against Indonesian women to Cambodia, as well as to formulate effective strategies for the repatriation of victims. The study uses a normative legal approach by analyzing Law Number 21 of 2007 on the Eradication of TPPO and examining real cases involving a woman from Karimun Regency, Riau Islands. The findings indicate that the perpetrators\u27 modus operandi has become increasingly sophisticated, utilizing social media to ensnare victims with promises of high-paying jobs. Vulnerability factors such as poverty, lack of information, and the weak socio-economic position of women are exploited by perpetrators through deception, forced labor, debt bondage, and communication cut-offs. This study highlights how the exploitation process is carried out systematically, from recruitment to being sent abroad, indicating the involvement of an organized human trafficking network. The strategy for repatriating victims of human trafficking cannot rely solely on logistical aspects but must include legal protection, psychological recovery, and social and economic reintegration. Challenges in repatriation include cross-border bureaucracy, victim identification, and the risk of revictimization if victims do not receive comprehensive support.This article recommends the need enhancing the capacity of families and communities in preventing human trafficking. This research is expected to contribute to the development of policies for the protection of female victims of human trafficking in Indonesia, particularly in the context of border areas and cross-border migration
CITRA DIRI PEREMPUAN PASCA PERCERAIAN DI TIKTOK: ANALISIS SOSIOLOGIS TERHADAP NARASI "LEBIH CANTIK SAAT SENDIRI"
No full textNarasi "Lebih Cantik Saat Sendiri" di TikTok sebagai representasi citra diri perempuan pasca perceraian dalam konteks sosiologi gender, media-komunikasi, dan keluarga di Indonesia. Narasi tersebut seringkali menggambarkan peningkatan kepercayaan diri perempuan setelah perceraian, namun juga berpotensi mereproduksi norma patriarki. Tujuan penelitian adalah menganalisis bagaimana narasi ini merepresentasikan citra diri dari perspektif sosiologi identitas, mengidentifikasi faktor sosiologis seperti norma gender, stigma sosial, dan pengaruh media digital, serta mengevaluasi kontribusinya pada pemberdayaan perempuan atau reproduksi stereotip gender. Metode penelitian menggunakan pendekatan kualitatif deskriptif melalui analisis konten video TikTok terkait, dengan sampel narasi yang dikumpulkan dari akun pengguna Indonesia. Hasil kajian menunjukkan narasi tersebut membentuk identitas positif sebagai bentuk empowermen, namun dipengaruhi oleh stigma sosial yang menekankan kecantikan sebagai ukuran nilai perempuan, serta norma gender yang masih patriarkal. Implikasi penelitian ini berkontribusi pada pemahaman sosiologis tentang dinamika media digital dalam membentuk citra diri, mendorong kampanye kesetaraan gender, dan mengurangi stereotip yang merugikan perempuan pasca perceraian di masyarakat Indonesia
Optimizing of Integrated Port Infrastructure Design to Improve Maritime Logistics Efficiency in Eastern Indonesia
Full text linkEfficient port infrastructure is essential for reducing maritime logistics costs and strengthening inter-island connectivity in Eastern Indonesia, where many ports still face constraints such as insufficient basin depth, inefficient berth geometry, and breakwater systems that are not fully aligned with local oceanographic conditions. This study investigates how optimizing an integrated port-infrastructure design can improve maritime logistics efficiency and lower sea-transport costs by focusing on three technical components: modern-ship-compatible berth design, optimal harbor basin depth, and effective breakwater planning. A mixed-method approach was employed, combining a systematic review of recent scientific publications (2023–2024), technical design assessment against relevant international recommendations, and multi-site case studies supported by semi-structured interviews and operational document analysis. Results indicate that increasing basin depth from 10.5 m to 14 m can raise vessel carrying capacity by up to 35% and reduce regional logistics costs by approximately 22–28%. Optimizing berth dimensions to a 600–800 m effective length and 50–65 m operational width can improve cargo handling efficiency by up to 40%, while a site-adapted rubble-mound breakwater can cut weather-related operational downtime by about 15–20%. These findings demonstrate that strategically integrated design optimization can substantially enhance port throughput, reliability, and cost competitiveness in Eastern Indonesia; therefore, prioritizing targeted infrastructure investment, adopting fit-for-purpose international design standards, and strengthening digital port management are recommended to accelerate regional economic connectivity
Evaluation of Compliance with IMO FAL Regulations in International Shipping Standards: A Comparative Study between Indonesia and Singapore
Full text linkThis study examines and compares the compliance levels of Indonesia and Singapore with the International Maritime Organization’s Convention on Facilitation of International Maritime Traffic (FAL Convention), focusing on its implications for international shipping standards. The background of this research lies in the growing importance of administrative efficiency and digital integration in port operations as essential determinants of maritime competitiveness. Both countries, situated along vital international trade routes, have ratified the FAL Convention; however, their implementation outcomes differ significantly. The main objective of this study is to evaluate how far both states have operationalized facilitation obligations, including the use of standardized FAL forms, electronic reporting systems, Maritime Single Window (MSW) implementation, and the enforcement of inspection facilitation principles. Using a qualitative comparative method based on document analysis, the research reviews legal frameworks, official port authority guidelines, and international compliance reports. The findings reveal that Singapore exhibits full compliance across all FAL indicators, supported by an integrated MSW, mandatory electronic data exchange, and consistent application of inspection facilitation procedures. Indonesia demonstrates partial compliance, with major ports showing progress in digital reporting but with smaller ports still constrained by limited interoperability, uneven enforcement, and fragmented administrative coordination. These variations stem from institutional capacity gaps, regulatory misalignment, and differing levels of digital readiness. The study concludes that enhancing inter-agency coordination, standardizing inspection procedures, and improving MSW interoperability are critical strategies for Indonesia to strengthen its compliance with the FAL Convention and improve port facilitation performance within global maritime governance