https://repositori.mypolycc.edu.my/jspui/handle/123456789/4 2026-06-28T08:28:58Z 2026-06-28T08:28:58Z Dinh, Van Thin Le, Quang Sang Nguyen, Huu Duc https://repositori.mypolycc.edu.my/jspui/handle/123456789/10069 2026-06-23T03:00:40Z 2025-07-01T00:00:00Z

Title: OPTIMIZATION METHOD OF WIND TURBINE LOCATIONS IN COMPLEX TERRAIN AREAS USING A COMBINATION OF SIMULATION AND ANALYTICAL MODELS Authors: Dinh, Van Thin; Le, Quang Sang; Nguyen, Huu Duc Abstract: Once an area has been identified for a wind farm, the annual energy production of the farm is the most important quantity to obtain high exploitation efficiency. This quantity depends mainly on factors such as wind resource characteristics, type, number and arrangement of turbines. For areas with complex terrain, wind resource characteristics depend largely on terrain features, so the selection of turbine installation locations is very important. Because when the turbines operate, they will cause a wake effect that increases the turbulence of the flow behind. Therefore, it is necessary to find the optimal distance between turbines so that the annual energy production reaches the maximum value. This study presents a method to determine the optimal turbine locations when considering the correlation between wake loss and turbine space in the case of mountainous terrain. Firstly, a computational fluid dynamics model combined with a geographic information system are used to determine the 3-dimensional wind characteristics at specific locations. Secondly, a Jensen model is used to consider the wake effect according to the distance between turbines. Then, the the annual energy production values are determined through the analytical model. In addition, a comprehensive assessment of levelized cost of energy is also provided to confirm the practicality of implementing the optimization model. Finally, the optimal location configuration of the turbines is proposed. This method was tested and compared with a farm with sufficient data to assess reliability and then applied to an area in Ninh Thuan, Viet Nam. The results showed that the the annual energy production obtained from this farm.

2025-07-01T00:00:00Z Salazar-Calderón, Luis A. Izquierdo-Reyes, Javier Tejera, Javier A. De La https://repositori.mypolycc.edu.my/jspui/handle/123456789/10068 2026-06-23T03:00:42Z 2025-08-01T00:00:00Z

Title: PROPOSAL OF A METHODOLOGY FOR MECHATRONIC DESIGN FROM IDEATION TO EMBODIMENT DESIGN: APPLICATION IN A MASONRY ROBOT CASE STUDY DESIGN Authors: Salazar-Calderón, Luis A.; Izquierdo-Reyes, Javier; Tejera, Javier A. De La Abstract: The growing complexity of industrial automation requires advanced design methodologies that integrate mechanical, electronic, and software systems into cohesive mechatronic products. This paper introduces an innovative engineering design methodology focused on the development of mechatronic products, covering from ideation to embodiment design. For its validation, the methodology was applied in a case study involving the design of a construction robot that automates key tasks such as block transportation, mortar application, and block placement. The robot was designed using a modular approach, allowing for scalability and adaptability to various tasks within the construction environment. To evaluate the methodology’s effectiveness, a comparative assessment was conducted using five key criteria: Iterative Process, Multidisciplinary Work, Design Complexity, Usability, and Adaptability. The proposed methodology scored 3, 3, 3, 2, and 2 respectively, on a 0-3 scale, demonstrating strong performance in early- stage iteration, cross-disciplinary integration, and handling of complex designs, with moderate usability and adaptability. These results position the methodology among the most balanced approaches, bridging both classical and modern design methods, such as those proposed by Ulrich or the V-model. Initial validation of this case study, through simulations and conceptual design, highlights the robot’s potential to improve efficiency and reduce labor costs. Although the case study targets construction, the methodology is adaptable to various industrial contexts, particularly manufacturing processes requiring automation, modularity, and flexibility. Future work includes the development of a physical prototype and further validation, with the potential to expand the methodology to broader manufacturing environments, fostering human-robot collaboration and adaptive production systems.

2025-08-01T00:00:00Z Hafnidar A. Rani Jurisman Amin T. Mirjan https://repositori.mypolycc.edu.my/jspui/handle/123456789/10067 2026-06-23T03:00:27Z 2026-01-01T00:00:00Z

Title: ENHANCING CONSTRUCTION PROJECT MANAGEMENT: INTEGRATING PMBOK AND ISO 21500 IN BANDA ACEH Authors: Hafnidar A. Rani; Jurisman Amin; T. Mirjan Abstract: This research investigates the integration of PMBOK (Project Management Body of Knowledge) principles and ISO 21500 standards in construction project management, specifically within the Post-Disaster Building Construction Project for the District Court Office in Banda Aceh. The study addresses two main issues: the application of PMBOK and ISO 21500-based construction project management and identifying key indicators that prioritize effective implementation. Using a saturated sampling technique with 18 respondents, 10 variables, and 45 indicators, this study aims to map the project management process and prioritize indicators aligned with these standards. Descriptive analysis shows the project has implemented PMBOK and ISO 21500 principles with varying success across indicators. Processes like project diagram creation, planning, closure, stakeholder identification, cost estimation, and quality planning achieve the highest averages (around 4.39), indicating effective implementation. Priority indicators include project chart creation, project management planning, project closure, stakeholder identification, cost estimation, and quality planning. However, areas such as Work Breakdown Structure (WBS), scheduling, risk analysis, supplier selection, and administrative closure received the lowest average values (3.50). This research highlights effective implementation of PMBOK and ISO 21500 standards, identifying priority areas for improving construction project management practices in similar post-disaster contexts and emphasizing areas requiring further development.

2026-01-01T00:00:00Z George, Smile Daniel Nurudeen Ahmed Onomhoale Nwofo, Temple C. Ikebude, Chiedozie Francis Olali, Finjite Dorathy https://repositori.mypolycc.edu.my/jspui/handle/123456789/10066 2026-06-23T03:00:34Z 2025-07-01T00:00:00Z

Title: GEOTECHNICAL CHARACTERIZATION AND SUITABILITY OF WEAK SOILS FOR SUSTAINABLE STABILIZATION IN RUKPOKWU, RIVERS STATE, NIGERIA Authors: George, Smile Daniel; Nurudeen Ahmed Onomhoale; Nwofo, Temple C.; Ikebude, Chiedozie Francis; Olali, Finjite Dorathy Abstract: Weak, moisture-sensitive soils in deltaic environments present major constraints to safe and durable infrastructure. This study provides a comprehensive geotechnical characterization of natural (untreated) soil from Rukpokwu, Obio/Akpor LGA, Rivers State, Nigeria, to assess its engineering suitability and establish a baseline for potential improvement. Representative samples were collected from the subgrade horizon (≈1.0 m) and tested in the laboratory according to BS 1377 procedures for Natural Moisture Content (NMC), Specific Gravity (Gs), Particle Size Distribution (PSD), Atterberg Limits (Liquid Limit [LL], Plastic Limit [PL], and Plasticity Index [PI]), and Standard Proctor Compaction to determine Maximum Dry Density (MDD) and Optimum Moisture Content (OMC), as well as California Bearing Ratio (CBR) and Unconfined Compressive Strength (UCS). Results show a mean natural moisture content of ~18.0%, specific gravity between 2.63 and 2.70, and a predominantly fine-grained matrix dominated by silt and clay. Index tests returned LL ≈ 38%, PL ≈ 17%, and PI ≈ 21%, classifying the soil as a highly plastic clay with significant shrink–swell potential. Compaction tests yielded an MDD of approximately 1.72 g/cm³ at an OMC of about 14.2%. Strength indicators were poor, with a CBR of roughly 3.99% and a UCS of about 433 kPa. Collectively, these findings demonstrate that the natural soil is moisture-sensitive, highly plastic, poorly graded, and of low bearing capacity, unsuitable for direct use as pavement subgrade, shallow foundation support, embankment fill, or backfill without treatment. The study concludes that stabilization is necessary and highlights the potential of sustainable pozzolanic additives from agricultural waste as viable options for improving the soil’s engineering performance.

2025-07-01T00:00:00Z