Examinando por Autor "Olmedo, A."
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Ítem A bibliometric review of the use of 3D printing in maritime and port education: trends and perspectives(Elsevier, 2024) Mojica, J.; Piñeres, A.; Huyke, A.; Gatica, G.; Olmedo, A.Three-dimensional (3D) printing, a technology in constant evolution, stands as a resource of great significance in the transformation of maritime and port education. In this article, we conduct a comprehensive bibliometric review with the purpose of identifying emerging trends and perspectives in this field. In the methods section, we develop on the search equation and the rigorous selection and eligibility criteria that guided our research. The results, presented in the corresponding section, reveal a steady growth in the use of 3D printing in maritime and port education in recent years, as well as a diversity of applications that enrich the teaching of concepts and skills related to these disciplines. Furthermore, we highlight the most relevant thematic areas and analyze the key trends and challenges that will require attention in the future. In conclusion, this study underscores the significant potential of 3D printing to enhance both learning and teaching in the realm of maritime and port education and provides crucial recommendations for future research in this promising field.Ítem A faster optimal model slotting in rack positions with mono SKU pallet(Elsevier, 2022) Rios, J.; Morillo-Torres, D.; Olmedo, A.; Coronado-Hernandez, J.; Gatica, G.The warehouse, with its racking positions, oversees regulate the flow of goods in the distribution center (DC). An adequate distribution of the products in the warehouse (slotting), reduces the operating picking times once is done by a full pallet. This paper presents a mathematical model that optimizes slotting times in a selective shelving and random storage warehouse. The model places the products with the highest turnover rate and ABC inventory valuation close to the dispatch area. In addition, it places high-value products on the upper shelf levels and heavy pallets on the lower levels. The results applied to a company dedicated to the manufacture of cellulose pulp and derivatives, obtained a 19.24% reduction in operating time.Ítem Hydrological Considerations for Sizing of a Barge Discharge Pipeline Runway(Elsevier, 2022) Coronado-Hernández, O.; Coronado-Hernández, J.; Romero-Conrado, A.; Gatica, G.; Olmedo, A.A key element for water supply systems is the design of the water intake components. Mobile floating platforms (barges) are helpful when the hydraulic system displays substantial variations in water levels. This study presents the hydrological considerations that should be considered for the design of the barge’s pipeline runway. The analysis takes into consideration the maximum and minimum water levels measured at the location. The study was carried out at the Magdalena River -Plato (Colombia) station, finding variations in water levels of between 12.3 m and 16.1 m for return periods of 25 and 100 years, respectively. This information is helpful for designers and consultants in order to design an appropriate barge pipeline runway.Ítem Pricing for urban areas using queuing theory(Elsevier, 2022) Rios, J.; Morillo-Torres, D.; Olmedo, A.; Coronado-Hernandez, J.; Gatica, G.By reducing traffic congestion in large cities and providing a safe place to leave vehicles while their owners are doing their activities, parking facilities play an important role in society by reducing congestion and the negative externalities (e.g. CO2 generation, noise, congestion) caused by vehicular traffic, being this one detrimental to society. Additionally, parking lots must establish strategies that allow them to be profitable and remain competitive. We determined the rate of a parking lot with a 20% margin, considering the rate of actual arrivals and the lost arrivals rate when the parking lot is full and the time a vehicle spends in the parking lot. In the results we found the queuing theory is applied to a private parking lot, in addition to establishing an optimal pricing policy, operating policies are established that allow it to generate additional revenue.Ítem Quantitative Estimation of Demand for Conveyor Belt Supplies(Elsevier, 2022) Nuñez-Uribe, C.; Olmedo, A.; Ríos, J.; Coronado-Hernández, J.; Morillo, D.; Gatica, G.; Umaña-Ibáñez, S.; Cabrera, G.Demand forecasts provides quantitative data to estimate, with a reasonable degree of certainty, customers’ requirements of a company. Applying this tool in manufacturing companies allows them to generate predictions for decision making. Forecasts have a transverse impact on finances, human resources, inventories, and production, among others. In Chile, qualitative models are used to make these estimates based on information from the sales force, customers, or group of experts. This article incorporates three exponential smoothing models into these estimates. Data is available from a manufacturing company (2016 to 2019); it is used to make comparisons and adjustments to select, the best model for each product. Also, a correlation and covariance analysis is carried out between the inputs, to determine the degree of relationship between the products and thus project their demand.