Oil palm is a key commodity supporting Indonesia’s economy through exports and employment. The industry’s success depends heavily on the selection of superior seedlings, which determine productivity, crop quality, and resistance to pests and diseases. Manual selection, however, often leads to subjectivity and inconsistency due to limited human resources and genetic variation. To address this, the study applies the Naïve Bayes algorithm for classifying oil palm seedlings based on seven variables: height, stem diameter, number of leaves, leaf color, disease resistance, root growth, and fruit yield. Using an explanatory quantitative method, the study follows seven stages: identifying problems, literature review, collecting 1,000 data entries from PT Intitama Berlian Perkebunan, data pre-processing, system modeling (UML), algorithm implementation, and evaluation using a confusion matrix and black box testing. Data was split into 80% training and 20% testing. The Naïve Bayes-based classification achieved 95% accuracy and perfect recall (1.00) for the superior seedling class. However, its performance on the minority class (non-superior seedlings) was weaker due to dataset imbalance. Black box testing verified all system functions worked correctly, enabling effective and efficient use by administrators. The study concludes that Naïve Bayes improves objectivity, efficiency, and accuracy in seedling selection. Nonetheless, attention is needed on data balancing and optimization to maintain consistent performance across classes. This system shows strong potential as a decision-support tool in plantations and promotes digital transformation in agricultural processes.

This study aims to analyze and compare migration data with the population growth projections of Gorontalo Province for the 2020–2035 period. A descriptive quantitative approach was used to evaluate in- and out-migration patterns based on the 2020 Long Form Population Census and BPS population projections. The findings reveal regional migration disparities, with Gorontalo City and Bone Bolango Regency experiencing positive net migration, while Pohuwato and Boalemo show high out-migration rates. Meanwhile, the demographic projections indicate an increasing dependency ratio and a significant growth in the elderly population. The combination of migration dynamics and demographic trends affects the age structure and regional capacity to support sustainable development. These findings provide an essential basis for evidence-based migration policy formulation to reduce regional disparities and strengthen local economic development.

Bioethanol can basically be made with basic ingredients in the form of vegetables which contain high starch and carbohydrates such as taro tubers (Colocasia esculenta [L] Schott). The choice of taro in making ethanol is because taro is classified as a tuber like cassava which has 66.8% starch content and 7.2% water content. The process of making glucose is done through acid hydrolysis (HCl) with variations in acid concentration (12, 14, 16, 18, and 20%) and hydrolysis time (1.5; 2; and 2.5 hours). From the analysis, it can be seen that the result of hydrolysis is liquid sugar (glucose) with the highest level of 27.8%brix.

This study aims to examine the effect of idle time on the productivity of dry bulk loading and unloading activities at the Java Integrated Industrial and Port Estate (JIIPE). The research employed a quantitative correlational approach, with data collection techniques including observation, documentation, and company records. The research sample consisted of 12 vessels engaged in loading and unloading at Java Integrated Industrial and Port Estate (JIIPE) port during the period from January to July 2024. The analysis revealed a correlation coefficient of -0.16, indicating a very weak negative relationship between idle time and productivity. The coefficient of determination, at 2.56%, suggests that idle time contributes only marginally to productivity, while the remainder is influenced by other factors. The factors affecting idle time include weather conditions, equipment failures, and truck delays. The conclusion indicates that while idle time does impact productivity, the effect is not statistically significant..
 
 

This study aims to analyze the suboptimal performance of hydraulic pump system on hatch cover performance on MV. Emerald Indah using USG (Urgency, Seriousness, Growth) method and data collection techniques in the form of observation, documents, and interview. The purpose of this study is to determine the causes, effect and efforts in solving the problems discussed. The results of the study indicate that several factors cause the hydraulic pump system to not function optimally , including dirty filters, leak in the hydraulic pump and pipe, and operation that is not in accordance with procedures. The effect of the suboptimal hydraulic pressure which ultimately becomes the main problem that inhibits the hatch cover opening process. To overcome this problem, improvements are needed such as periodic filter cleaning, replacement of leaking components, and increasing crew understanding of operational procedures. This research is expected to provide insight for related parties in improving the performanceof the hydraulic pump system and the efficiency of the loading and unloading process on ships.

This study discusses the preventive measures against piracy attacks faced by MV. X while transiting High Risk Areas. The purpose of this research is to identify the vessel’s vulnerability factors to piracy attacks and analyze the procedures and preventive actions that have been implemented. A descriptive qualitative method was used, including observation, in-depth interviews with crew members and armed guards, as well as document analysis of anti-piracy SOPs. The research findings show that the vulnerabilities of MV. X are due to limited drill training, suboptimal implementation of procedures, and inconsistency in the use of personal protective equipment (PPE). Based on these findings, it is recommended to increase the frequency and depth of simulation drills, enforce PPE usage standards, and update deck access security procedures. In conclusion, consistent implementation of procedures and structured training will enhance vessel security during High Risk Area transits.

Pressure vessels are critical components in the energy industry, used to store and process high-pressure fluids. The structural reliability of these vessels plays a pivotal role in ensuring operational safety and system efficiency. This study aims to analyze the design and reliability of pressure vessels using both numerical and experimental approaches to optimize performance and enhance safety factors. The numerical method was conducted through Finite Element Analysis (FEA) using ANSYS software to evaluate stress distribution, stress concentration, and potential failure modes under various operational load scenarios. Meanwhile, the experimental method involved hydrostatic pressure testing, strain measurements using strain gauges, and displacement analysis to validate the numerical simulation results. Data were collected from simulations and laboratory experiments, then analyzed quantitatively by comparing key parameters such as stress distribution, deformation patterns, and safety factors against industry standards. The results indicate that combining numerical and experimental approaches improves the accuracy of pressure vessel behavior predictions, enables more efficient design optimization, and enhances structural reliability. In conclusion, the methods applied in this study can serve as a reference for developing safer, more efficient pressure vessel designs that comply with industrial standards, thereby supporting improved safety and operational efficiency in the energy sector.

Rumah sakit Toeloengredjo terletak di Kecamatan Pare, Kediri dengan luas bangunan sebesar ±981,199 m2 yang memiliki ruang klinik pada lantai satu dan dua, dan ruang meeting room pada lantai 3. Gedung Rumah Sakit Toeloengredjo mengacu pada SNI 2847 : 2013, SNI 1727 : 2013, dan SNI 1726 : 2012.
Dalam tugas akhir ini gedung Rumah Sakit Toeloengredjo di analisis dengan SNI 2847 : 2019, SNI 1727 : 2018, dan SNI 1726 : 2019. Struktur atas terdiri dari kolom, balok dan pelat, sedangkan sloof dan pile cap dengan pondasi tiang pancang adalah struktur bagian bawah. Dengan menggunakan software SAP 2000 untuk analisis struktur diperoleh hasil perhitungan yaitu struktur pelat tipe S1 ø10 – 150 mm, balok tipe B.1 5 D16 dan 4 D16, kolom tipe K.1A 12 D19.
 

Kebutuhan akan konsumsi energi listrik sangat tinggi dan semua aktivitas manusia banyak yang menggunakan energi listrik. Listrik juga sangat dibutuhkan pada industri, karna seluruh alat hampir semua menggunakan listrik. Karna penggunaan listrik sangat besar pada PT. Cemindo Gemilang membangun unit WHRS (Waste Heats Recovery System) untuk menyuplai listrik. Dalam penelitian ini bertujuan untuk mengetahui bagaimana prinsip kerja serta proses kerja pada WHRS. Metode yang digunakan yaitu dengan observasi dan wawancara untuk mengetahui bagaimana proses pada WHRS tersebut. Hasil kesimpulan yaitu Waste Heats Recovery System ini merupakan pembangkit listrik yang menggunakan sisa panas atau flue gas sebagai pengganti batu bara untuk memanaskan air pada boiler.
 

Perkembangan sektor industri saat ini melaju sangat pesat, kebutuhan akan mesin mesin listrik berupa motor listrik sangat dibutuhkan dalam menunjang keberlangsungan produksi. Penggunaan motor listrik di PT. Cemindo Gemilang tentunya mengakibatkan beberapa kendala dengan itu penggunaan pengasutan motor dengan jenis Variable Speed Drive dan Soft Starter diterapkan pada industri cemindo gemilang. Penelitian ini bertujuan menganalisis pengasutan motor jenis variable speed drive (VSD) dan soft starter pada Fan Coller System di PT. Cemindo Gemilang. Hasil dari penelitian ini mengetahui hasil analisis pada penggunaan pengasutan motor, load consumption serta efisiensi penggunaan dari dua jenis pengasutan tersebut dimana pengasutan merupakan sistem untuk menjalankan motor pertama kalo dengan tujuan agar arus starting tetap kecil serta drop tegangan pada sisi suplay masih dalam batas toleransi.