Rosa Guadalupe Gonzalez Ramirez

Rosa Guadalupe Gonzalez Ramirez
University of the Andes (Chile) | UANDES · Faculty of Engineering and Applied Sciences

Dr. in Engineering Sciences

About

78
Publications
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639
Citations

Publications

Publications (78)
Article
Full-text available
This paper presents an approach using a combination of data-driven and analytical models to design the layout of empty container depots where top-lifters (TLs) are used. A method to determine the optimum number of blocks along with the number of driving lanes is proposed where the size of the blocks is specified by the number of rows, tiers, and ba...
Article
Ports are facing several logistical challenges and changes in globalization patterns. For this reason, port operations need to be more efficient than ever. Moreover, they can be classified as maritime operations, terminal operations, and connectivity or land operations. Regarding this, maritime operations represent around 48% of the transport costs...
Article
Full-text available
In this paper, a semi-structured interview approach is used to assess governance and institutionalist practices promoted among successful port systems worldwide, in Latin American ports. The aim is to provide recommendations that would allow Latin American ports to reach high performance scores through governance practices, and face the challenges...
Chapter
The storage location assignment problem (SLAP), also known as the slotting problem involves the decisions of how much and where should be stored each stock keeping unit (SKU) in the fast-pick area with the aim to minimize total order-picking and replenishment costs associated to the distance traveled by the picking operators. Motivated by this, we...
Article
Full-text available
We propose an option contract model for the leasing of containers. In an option contract, the shipping company commits to order a quantity of containers from the leasing company and has the right to modify its order at a later stage, according to its actual requirement. Under this scheme, the shipping company is allowed to request a smaller or larg...
Chapter
In this work, we propose a hierarchical optimization model to support harvest and local routing decisions of fresh agricultural products. The proposed model has been motivated by the fact that small growers of fresh produce very often face difficulties in terms of availability of local (or first-mile) logistics at reasonable prices which results in...
Chapter
This paper proposes a mixed-integer linear programming (MILP) model that is implemented based on a rolling horizon scheme to solve an aggregate production planning decision problem of a manufacturing company that produces snacks in Monterrey, Mexico. The demand of the company is characterized by trends and seasonality. The proposed solution is eval...
Article
Purpose This paper explores the effect of port's service time, particularly the mean and variability, on shippers' total landed costs to determine the competitive position of the port and derive recommendations for the strategic design of port services. Design/methodology/approach The competitive position of a port is estimated considering the ser...
Article
Full-text available
Este artigo propõe o projeto de uma plataforma para apoiar o projeto de políticas públicas para o transporte de cargas. O foco está no que é chamado de “última milha portuária” ou interface terrestre dos portos na área interportuária, também conhecida como transporte drayage. O porto de San Antonio será considerado como estudo de caso. Os resultado...
Chapter
Foreign trade in Chile accounts for approximately 30% of the GDP (gross domestic product). In 2015, from the total volume, 92% of the imports and 96% of the exports were transferred by maritime ports. Hence, maritime ports are key nodes of the global transport chain with a strategic role on the country’s economic development. The export and import...
Article
Inter-Organizational Information Systems (IOISs) for seaport logistics facilitate monitoring operations, the exchange of information with stakeholders, and meeting regulations of foreign trade. However, seaport contexts entail complexities in terms of stakeholder involvement and business processes that must be considered thoroughly toward the succe...
Chapter
Contemporary prosperity depends on effective and secure supply chain networks that support economic competitiveness. Disruptions in global supply chains would have critical consequences on economies. The lack of technical studies and quantitative data concerning security that affects supply chain operations in Latin America, motivated to develop an...
Article
Recent developments in consumption patterns, lowering of trade barriers, the emergence of low cost/miniature sensors and information technologies, and advanced business analytics tools are changing the playing field on which most of the agri-food supply chains operate. The intelligent use of sensing and information technologies has the potential to...
Article
In this paper, we consider the distribution process of a manufacturing company that supplies products to the customers located in a service region. The company distributes its products partitioning the service region into delivery zones or districts that are served by a single deliveryman. Two objectives are considered when designing the delivery z...
Preprint
Full-text available
Cooperation is widely seen as a major avenue towards more efficient and sustainable resource utilization in numerous transportation problems as digitized processes simplify information exchange between individuals. Nevertheless, successful implementations require planning models that consider cooperation incentives for individuals to form coalition...
Article
Purpose The purpose of this paper is to propose a combination of forecasting methods that enables a holistic understanding of a future situation, given certain influencing variables by a combination of real data and expert knowledge. Design/methodology/approach The proposal combines two well-known methods: first, system archetypes that correspond...
Article
A Decision Support System (DSS)is proposed in this paper for improving container stacking operations. This DSS addresses the stacking problem for import containers via a two-step strategy. First, dwell times are predicted for each container using analytics techniques. This prediction is used as an input for a mathematical programming model that min...
Article
Full-text available
Tradicionalmente la actividad portuaria ha influido en su entorno, más aún en el contexto de una ciudad. Es por ello, que es señalada como un proceso que requiere ser revisado desde nuevas perspectivas tendientes a reducir los impactos en el medioambiente, en la sociedad, en mejorar las condiciones a sus operarios y en el uso de los recursos. Del m...
Chapter
In this chapter, we present an analysis of the fresh apple export supply chain in Chile. Fresh fruits are one of the main exports in Chile, after the mining products. This supply chain is particularly complex due to its perishable nature and the fact that the fruit export season occurs during the summer period, overlapping with the arrival of cruis...
Article
Full-text available
A sales territory design problem faced by a manufacturing company that supplies products to a group of customers located in a service region is addressed in this paper. The planning process of designing the territories has the objective to minimizing the total dispersion of the customers without exceeding a limited budget assigned to each territory...
Article
Full-text available
A necessidade de otimizar o proceso operativo de um armazém para o despache de contêineres de exportação motivou o presente estudo. O escopo tem três objetivos com foco no despacho de contêineres vazios tipo reefer: primeiro, minimizar o tempo de despacho que, atualmente, dura em média três horas, desde que o transporte do cliente entra no armazém,...
Article
Full-text available
The space allocation problem for outbound containers involves assigning containers to specific locations in the yard as they are delivered to the port. The problem is challenging because the arrival sequence is not known in advance, which makes it difficult to minimize container rehandling during the ship loading operation. This paper provides a he...
Article
In the current copper mining scenario, where prices are decreasing and pits are larger, there is a pressing need for increasing operational productivity. This is particularly important for mining contractors, who are constantly facing the additional pressure of obsolescence if they are not able to provide cost-savings for mine owners. In this paper...
Article
Recently, a new approach to solve the outbound container location problem motivated by the Shanghai maritime terminals was published. This approach addresses the problem by decomposing it into two stages. The first stage is a mathematical programming model and the second stage is a heuristic algorithm whose objective is to minimize the total reshuf...
Chapter
In developing countries, such as those in Latin America, inland flows of contain-er terminals present high levels of uncertainty and variability. This situation oc-curs mainly due to lack of automation procedures, affecting coordination with the hinterlands. In this article, a methodology based on a dwell time segregated con-tainer storage policy i...
Article
Full-text available
This paper addresses a biobjective production-distribution planning problem. The problem is formulated as a mixed integer programming problem with two objectives. The objectives are to minimize the total costs and to balance the total workload of the supply chain, which consist of plants and depots, considering that it represents a company vertical...
Article
Full-text available
Recent trends in port performance improvement include the coordination of intermodal transport logistics to reduce congestion and inefficiencies generated at the gates of the terminals. Congestion at the gate of a terminal generates several problems such as pollution and long waiting times for truck carriers. As part of the strategies and best prac...
Article
Full-text available
Port terminals consist of two interfaces for transferring cargo among transport modes: (1) the seaside or quayside interface and (2) the landside interface. At the seaside interface, cargo is loaded and unloaded from the vessels and stored temporarily at the yard. Landside operations consist of receiving and dispatching cargo from external trucks a...
Article
Full-text available
We address a logistics districting problem faced by a parcel company whose operations consist of picking up and delivering packages over a service region. The districting process aims to find a partition of the service region into delivery and collection zones that may be served by a single vehicle that departs from a central depot. Criteria to be...
Conference Paper
Fuzzy Logic has found significant interest in the context of global shipping networks due to its applicability to uncertain decision making environments. Its use has been particularly important when solving location and equipment selection problems. While being applicable as a stand-alone technique, Fuzzy Logic has become increasingly interesting a...
Conference Paper
Full-text available
Recent developments in consumption patterns, lowering of trade restrictions, the emergence of low cost/miniature sensors and information technologies related to business analytics are changing the playing field on which most of the agri-food supply chains operate. The intelligent use of sensing and information technologies have the potential to sta...
Conference Paper
This work presents a model for the Tramp Ship Scheduling problem including berth allocation considerations, motivated by a real case of a shipping company. The aim is to determine the travel schedule for each vessel considering multiple docking and multiple time windows at the berths. This work is innovative due to the consideration of both spatial...
Article
Port-related emissions are a growing problem for urban areas often located directly next to maritime container terminals highly frequented by container trucks. Empty truck trips, caused by a lack of coordination among truckers, are responsible for a significant share of these emissions, and collaboration among truckers is seen as the major opportun...
Conference Paper
Full-text available
In this article, a methodology as well as a decision support system for the container storage assignment at a yard of a container terminal is proposed. The motivation of the proposed methodology are the cases of container terminals where inland flows present high levels of uncertainty and variability. This situation is typical of ports in developin...
Article
This work presents a model for the Tramp Ship Scheduling problem including berth allocation considerations, motivated by a real case of a shipping company. The aim is to determine the travel schedule for each vessel considering multiple docking and multiple time windows at the berths. This work is innovative due to the consideration of both spatial...
Article
Efficient cargo handling is a key element for a maritime port to compete and provide good service levels to its users. The performance of a port is related to ship-turnaround, which is conditioned by the ships loading and unloading operational efficiency. At the yard, containers are temporarily stacked in order to later either load them onto a ship...
Article
The sustainable design of port processes and the use of respective tools and frameworks for ports in Asia and Europe have received significant attention, while similar challenges and methods for the Latin American ports have not been examined to the same extent. This empirical study of the Latin American ports aims to establish the foundation of an...
Chapter
Contemporary prosperity depends on effective and secure supply chain networks that support economic competitiveness. Disruptions in global supply chains would have critical consequences on economies. The lack of technical studies and quantitative data concerning security that affects supply chain operations in Latin America, motivated to develop an...
Conference Paper
Full-text available
Port-related emissions are a growing problem for urban areas often located directly next to ports highly frequented by trucks and vessels. Empty truck trips are responsible for a significant share of these emissions. Truck appointment systems (TASs) allow scheduling of truck arrivals and enable collaboration among truckers. Though, TASs leveraging...
Article
Full-text available
During export ship loading operations, it is often necessary to perform relocation movements with containers that interfere with access to the desired container in the ship loading sequence. This paper presents a real-time heuristic procedure for the container relocation problem employing reachstacker vehicles as container handling equipment. The p...
Article
Full-text available
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, especially of the commodities. For this reason, minimizing logistics costs is an important challenge for nations in order to enhanc...
Conference Paper
Full-text available
Este artículo presenta una propuesta de solución al problema de localización de contenedores de exportación en el patio de una terminal portuaria. La propuesta de solución consta de dos etapas: (i) asignar los contenedores a bahías a través de un modelo de programación entera con el objetivo de minimizar la distancia total recorrida en el proceso d...
Conference Paper
Full-text available
Parte importante de las operaciones de un puerto es el punto de acceso (Gate) de los contenedores hacia la terminal. La alta variabilidad en la llegada de transportistas y la existencia de horas pico cuya demanda excede la capacidad de los recursos puede causar largos tiempos de espera y altos niveles de congestionamiento para acceder a la terminal...
Conference Paper
Full-text available
Foreign trade barriers and duties have been significantly reduced by multilateral agreements and integration mechanisms among nations. Hence, logistic costs represent a significant proportion of the final price of the items that is currently even more important than average duties and tariffs paid. For this reason, minimizing logistic costs is an i...
Conference Paper
We address the problem of storage space allocation in a sea port terminal. The problem consists of assigning a block space in the yard of a container terminal to every incoming container while ensuring operational efficiency. The proposed framework uses a 2-stage framework in combination with a fuzzy logic rule-based strategy. The concept is motiva...
Article
In this paper the authors propose a bi-level mathematical programming model for humanitarian logistics to optimize decisions related to the distribution of international aid after a catastrophic disaster. In this situation, non-profit international organizations and foreign countries will offer to help by shipping certain necessary products, such a...
Article
Full-text available
In this article we propose a collaborative logistics framework for a Port Logistics Chain (PLC) based on the principles of Supply Chain Management (SCM) that rely on stakeholders integration and collaboration, providing a reference model for the inland coordination of the PLC. A comprehensive literature review was conducted, analyzing several cases...
Article
Full-text available
This paper develops a heuristic algorithm for solving a routing and scheduling problem for tramp shipping with discretized time windows. The problem consists of determining the set of cargoes that should be served by each ship, the arrival, departure, and waiting times at each port, while minimizing total costs. The heuristic proposed is based on a...
Article
Full-text available
This research highlights the use of game theory to solve the classical problem of the uncapacitated facility location optimization model with customer order preferences through a bilevel approach. The bilevel model provided herein consists of the classical facility location problem and an optimization of the customer preferences, which are the uppe...
Presentation
Full-text available
Presentation of a mathematical model that address the Storage Space Allocation Problem, considering a Chilean Port case
Article
Full-text available
Los territorios con vocación internacional como las ciudades puerto, deben emprender ajustes a su gobernanza local, regional y global con miras a solucionar problemas que se relacionan con la ciudadanía, la creciente demanda privada por suelo industrial y la anexión de nuevos Hinterland de influencia. La experiencia internacional, no exenta de difi...
Conference Paper
Full-text available
Understanding the phenomenon of propagation of disruptions regarding security is a critical factor for designing of robust export supply chains. From a system dynamics approach, this research analyses the effects of the materialization and simultaneous propagation of disruptions of security at various points in export supply chains (ESC). The model...
Conference Paper
Full-text available
Supply chain security is a central issue for the competitiveness of Latin American economies that goes beyond the prevention of terrorist acts or drug trafficking itself. Interruption of a logistics chain, either by criminal acts, lack of stock of supplies or for any event that hinders the distribution of supplies or products, not only leads to eco...
Conference Paper
Full-text available
An optimization model, that assumes a duration stay policy, is developed for assigning storage locations. The model minimizes costs of travel distances for storing units of load and penalty costs for storing together units of different orders and separated units of the same order. An application of this model was carried out in a warehouse from a c...
Article
Full-text available
The container terminal is a convergence point in the cargo flow, being a focal point for multiple supply chains. The operations performed in a container terminal involve one of the most complex environments within the transport industry. A container terminal plays a critical role in international shipping and is under pressure to cope with increasi...
Article
Full-text available
Recent trends on port performance improvement aims to coordinate logistics activities between intermodal transportation motivated by the congestion and inefficiencies generated at the gates of the terminals. Coordination is enabled when information is shared in a collaborative framework based on information technologies and redesign processes. Truc...