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Browsing Dyna by Subject "62 Ingeniería y operaciones afines / Engineering"
Now showing items 1-20 of 576
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3D Modeling and functional analysis of a Spanish historical invention of the nineteenth century for mineral extraction: The Emilina Machine
In this paper, we analyze in detail a Spanish historical nineteenth-century invention used for mineral extraction: the Emilina machine. In particular, three-dimensional modeling is performed using software parametric (CATIA ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
3D Parametric design and static analysis of the first Spanish winch used to drain water from mines
En el presente artículo se analiza en detalle la primera máquina malacate desarrollada en España utilizada para la extracción del mineral. Se trata de un privilegio de invención diseñado por Bernave Dombon en 1850. En ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A 2-tuple linguistic multi-period decision making approach for dynamic green supplier selection
Green supplier selection aims to choose the best supplier, among several alternatives, taking into account not only traditional criteria such as cost and quality of service or product, but also considering the ability to ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A branch and bound hybrid algorithm with four deterministic heuristics for the resource constrained project scheduling problem (RCPSP)
This paper addresses the Resource Constrained Project Scheduling Problem (RCPSP). For its solution, a hybrid methodology, which uses a Branch and Bound basic algorithm with dominance rules, is developed and implemented, ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A college degree recommendation model
Selecting a profession suitable to students` expectations implies taking into account multiple factors. Despite its usefulness and high impact, there are shortcomings in current university major recommendation models. Among ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A comparative study for the design of rectangular and circular isolated footings using new models
This paper presents a comparative study for design of reinforced concrete isolated footings of rectangular and circular form subjected to axial load and bending moments in two directions using new modelsto obtain the most ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A comparative study of multiobjective computational intelligence algorithms to find the solution to the RWA problem in WDM networks
This paper presents a comparative study of multiobjective algorithms to solve the routing and wavelength assignment problem in optical networks. The study evaluates five computational intelligence algorithms, namely: the ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A comparative study of multiscale representations for spatialspectral classification of hyperspectral imagery
Hyperspectral remote sensors acquire data coming from hundreds of narrow bands through the electromagnetic spectrum; this allows the terrestrial and maritime surfaces to be characterized for Earth observation. Hyperspectral ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A comparative study of two aging and fusion methods in the synthesis of zeolitic materials from natural clinker
A sample of Colombian natural clinker was evaluated as a raw material in a laboratory-scale synthesis of zeolitic materials using two methods of alkaline fusion, followed by two aging methods, and finally hydrothermal ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A comparative study on slurry erosion behavior of HVOF sprayed coatings
In actual work, slurry erosion behavior of three different HVOF sprayed cermet coatings has been studied. The coatings were developed using the powders feedstock having WC fine structured sizes, Cr3C2-NiCr 75-25 and ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A comparison of trajectory granular based algorithms for the location-routing problem with heterogeneous fleet (LRPH)
We consider the Location-Routing Problem with Heterogeneous Fleet (LRPH) in which the goal is to determine the depots to be opened, the customers to be assigned to each open depot, and the corresponding routes fulfilling ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A design process for balanced educational video games with collaborative activities
The efficiency of educational video games could be improved through the use of a specific development method that allows them to keep both their educational and recreational goals and maintains their playability. Accordingly, ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A framework to evaluate over-costs in natural resources logistics chains
Foreign trade barriers and duties have been significantly reduced by multilateral agreements and integration mechanisms among nations. Logistics costs represent a significant proportion of the final price of the items, ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A gas stations location and their relationship with the operational characteristics of a road network
This research proposal applies geostatistical techniques to discover the relationship between the geographic locations of different gas stations and the operational characteristics offered by the transport network of the ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A genetic algorithm to solve a three-echelon capacitated location problem for a distribution center within a solid waste management system in the northern region of Veracruz, Mexico
Mexico is the world’s third largest consumer of Polyethylene Terephthalate (PET), only preceded by the United States and China. PET is commonly used in plastic containers such as beverage bottles and food packaging. It can ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A geometrical robust design using the Taguchi method: application to a fatigue analysis of a right angle bracket
The majority of components used in aeronautic, automotive or transport industries are subjected to fatigue loads. Those elements should be designed considering the fatigue life. In this paper the geometrical design of a ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A GIS approach based on user location to evaluate a bike-sharing program
Bike-sharing systems (BSS) and Bike-sharing programs (BSP) have been implemented around the globe in the last decade for its benefits and for changing the paradigm that the car is not the main mode of transportation of ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A hybrid genetic algorithm for ROADEF'05-like complex production problems
In this work, we present a hybrid technique that combines a Genetic Algorithm with meta-heuristics to solve a problem in RENAULT France’s production plants. The method starts with an initial solution obtained by means of ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A hybrid metaheuristic algorithm for the capacitated location routing problem
This paper addresses the Capacitated Location-Routing Problem (CLRP) in which the aim is to determine the depots to be opened, the customers to be assigned to each open depot, and the routes to be performed to fulfill the ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna. -
A methodology for analysis of cogeneration projects using oil palm biomass wastes as an energy source in the Amazon
In the search for strategies to mitigate climate change, the promotion of renewable energy is a major challenge worldwide, particularly for developing countries such as Brazil and Colombia, which aim to diversify their ...Universidad Nacional de Colombia Revistas electrónicas UN Dyna.
