https://ph01.tci-thaijo.org/index.php/lej <div style="max-width: 800px; margin: 0 auto 30px auto; background-color: #fff; padding: 20px 25px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1);"> <h2 style="text-align: center; color: #f15c22; margin-bottom: 15px;">Welcome to <em data-start="384" data-end="421">Engineering and Technology Horizons</em></h2> <p data-start="425" data-end="832"><em data-start="425" data-end="462">Engineering and Technology Horizons</em> serves as a distinguished international platform for the advancement and dissemination of engineering and technological knowledge. Established in 1983, the journal continues to uphold its mission of promoting the exchange of research findings, innovative practices, and scientific understanding among researchers, engineers, academicians, and professionals worldwide.</p> <p data-start="834" data-end="1180">The journal is dedicated to publishing high-quality, peer-reviewed articles that contribute to the progress of engineering science and practice. We encourage submissions that present original ideas, new principles, experimental evidence, and technological innovations that address contemporary challenges and expand the boundaries of knowledge.</p> <p data-start="1182" data-end="1639"><em data-start="1182" data-end="1219">Engineering and Technology Horizons</em> welcomes a broad spectrum of topics across four major fields: <strong data-start="1282" data-end="1323">Mechanical and Industrial Engineering</strong>, <strong data-start="1325" data-end="1346">Civil Engineering</strong>, <strong data-start="1348" data-end="1374">Electrical Engineering</strong>, and <strong data-start="1380" data-end="1404">Chemical Engineering</strong>. Through these disciplines, the journal provides a comprehensive platform for sharing innovative research, advanced methodologies, and practical applications that foster interdisciplinary collaboration and technological advancement.</p> <p data-start="1641" data-end="2166">We warmly invite authors and readers alike to become part of our growing academic community. By contributing to and engaging with <em data-start="1771" data-end="1808">Engineering and Technology Horizons</em>, you join a global network of professionals dedicated to advancing the frontiers of engineering and technology for the benefit of society. Whether you are submitting groundbreaking research, seeking reliable scientific resources, or exploring emerging trends in engineering innovation, this journal is your gateway to knowledge, collaboration, and impact.</p> <p data-start="2168" data-end="2222"><strong data-start="2168" data-end="2222">Together, let us continue to explore new horizons.</strong></p> <a href="https://ph01.tci-thaijo.org/index.php/lej/about">read more→</a></div> <table style="border-collapse: collapse; width: 100%; max-width: 800px; margin: 0 auto; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.06);"> <thead> <tr> <th style="padding: 12px 15px; text-align: left; background: #f15c22; color: #fff; font-weight: 600;">Article Processing Charge</th> <th style="padding: 12px 15px; text-align: left; background: #f15c22; color: #fff; font-weight: 600;">Median Submission to Acceptance (days)</th> <th style="padding: 12px 15px; text-align: left; background: #f15c22; color: #fff; font-weight: 600;">Acceptance Rate (%)</th> </tr> </thead> <tbody> <tr style="vertical-align: middle;"><!-- APC cell: big "FREE" badge + small icon --> <td style="padding: 16px 15px; border-top: 1px solid #eee;"> <div style="display: flex; align-items: center; gap: 12px;"><!-- Icon (SVG) --> <!-- Badge --> <div style="display: flex; flex-direction: column;"> <div style="display: flex; align-items: center; gap: 14px;"><!-- Checkmark symbol --> <div style="font-size: 24px; color: #2f9e44; font-weight: bold; flex-shrink: 0;">✔</div> <!-- Text --> <div style="display: flex; flex-direction: column;"> <div style="font-size: 14px; font-weight: bold; color: #2b2b2b;">FREE OF CHARGE</div> <div style="font-size: 13px; color: #666; margin-top: 6px;">No APC (Article Processing Charge)</div> </div> </div> </div> </div> </td> <!-- Median days cell: numeric + horizontal bar visualization --> <td style="padding: 16px 15px; border-top: 1px solid #eee;"> <div style="max-width: 360px;"> <div style="display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px;"> <div style="font-size: 14px; font-weight: 600; color: #2b2b2b;">121 days</div> <div style="font-size: 13px; color: #666;">approximately</div> </div> <!-- Bar: using a simple container with a filled inner bar. We choose a reference max = 200 days → 138/200 = 69% width --> <div style="background: #f0f0f0; border-radius: 8px; height: 14px; overflow: hidden;"> <div style="width: 69%; height: 100%; border-radius: 8px; background: linear-gradient(90deg, #fcb07e, #f15c22); box-shadow: inset 0 -2px 6px rgba(0,0,0,0.08);"> </div> </div> <!-- small ticks + scale note --> <div style="display: flex; justify-content: space-between; font-size: 11px; color: #999; margin-top: 8px;"> </div> </div> </td> <!-- Acceptance rate cell: circular progress (SVG) --> <td style="padding: 16px 15px; border-top: 1px solid #eee;"> <div style="display: flex; align-items: center; gap: 14px;"><!-- Circular progress --> <div style="width: 50px; height: 50px; border-radius: 50%; background: conic-gradient(#fcb07e 0% 61%, #f15c22 61% 100%); display: flex; align-items: center; justify-content: center; font-size: 18px; color: white; font-weight: bold; flex-shrink: 0;"> </div> <!-- Text --> <div style="display: flex; flex-direction: column;"> <div style="font-size: 14px; font-weight: bold; color: #2b2b2b;">Acceptance Rate</div> <div style="font-size: 13px; color: #666; margin-top: 6px;">53% of submissions accepted</div> </div> </div> </td> </tr> </tbody> </table> <p> </p> School of Engineering, King Mongkut's Institute of Technology Ladkrabang en-US Engineering and Technology Horizons 2985-1688 <div class="item copyright"> <div class="item copyright"> <p>The published articles are copyrighted by the School of Engineering, King Mongkut's Institute of Technology Ladkrabang.</p> <p>The statements contained in each article in this academic journal are the personal opinions of each author and are not related to King Mongkut's Institute of Technology Ladkrabang and other faculty members in the institute.<br />Responsibility for all elements of each article belongs to each author; If there are any mistakes, each author is solely responsible for his own articles.</p> </div> </div> https://ph01.tci-thaijo.org/index.php/lej/article/view/264438 <p>This study examines the coconut water conveying system through a case study of the coconut company. The applicability of Discrete-Event Simulation (DES), implemented using FlexSim, is demonstrated as a decision-support tool for analyzing and improving the system. The existing operation is characterized by inefficiencies in manual handling and unbalanced workloads, which negatively affect system throughput. Various scenarios were evaluated to determine optimal staffing levels at each workstation. Simulation results indicated that scenario 6 achieved an optimal allocation of labor at each workstation, thereby maximizing average throughput and reducing average work-in-process compared with the current system. Furthermore, a comprehensive simulation model was developed to evaluate potential process improvements, identifying the shell cracking and separation operations as the primary bottleneck constraining overall system throughput. The optimized conveyor-based configuration increases average throughput by 45.89%, reduces average work-in-process by 59.70%, and decreases average waiting time by 49.86% compared with the current system.</p> Phoometh Sangrayub Jirawat Jirachatwongchai Pasuree Lumsakul Parinya Kaweegitbundit Copyright (c) 2026 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 2026-01-23 2026-01-23 43 1 430102 430102 10.55003/ETH.430102 https://ph01.tci-thaijo.org/index.php/lej/article/view/264138 <p class="Normalcontent" style="text-indent: 21.3pt;">This study develops a Hybrid Multi–Objective Simulated Annealing (HMOSA) framework for solving the Multi–Objective Capacitated Vehicle Routing Problem in Thailand’s School Milk Program, where balancing efficiency and fairness is essential due to the manual unloading tasks performed by each delivery team. The model minimizes total travel distance and workload imbalance, quantified by the standard deviation of vehicle loads to better capture physical handling effort. The proposed HMOSA introduces two novel mechanisms: i) warm–start initialization using extreme seed solutions generated from Single–Objective SA (SOSA) and Weighted–Sum SA (WSSA), and ii) a guided neighborhood mechanism that selects promising neighbors using weighted scores to enhance search efficiency and diversity. These contributions improve convergence stability without relying on complex parameter tuning. Computational experiments on 10, 30, and 51–customer instances demonstrate that HMOSA consistently outperforms conventional MOSA and SA, and provides superior Pareto–front quality compared with Non-dominated Sorting Genetic Algorithm II NSGA–II. Performance was assessed using two widely adopted indicators: hypervolume (HV) for solution diversity and inverted generational distance (IGD) for convergence reliability. In the real–world 51–school case, small increases in total distance resulted in substantial improvements in workload equity, offering actionable compromise solutions between distance and fairness. Overall, HMOSA embeds fairness into routing decisions while maintaining scalability and robustness, serving as a practical decision–support tool for real routing applications where routing efficiency and equitable workload distribution are both essential.</p> Peerapong Pakawanich Copyright (c) 2026 School of Engineering, King Mongkut’s Institute of Technology Ladkrabang https://creativecommons.org/licenses/by-nc-nd/4.0 2026-01-23 2026-01-23 43 1 430101 430101 10.55003/ETH.430101