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Relief materials are transported to the disaster areas after natural disasters. This paper describes the substitution and collocation relationships among relief materials, and finds the maximum of the number of victims could be supplied by them. On this basis, this paper optimizes the loading density of relief materials by establishing and solving corresponding quadratic programming problems. The...
The efficient and timely distribution of freight goods is critical for supporting the demands of modern urban areas. Optimum freight ensures the survival and development of urban areas. In the contemporary logistic there are two main distribution strategies: direct distribution and multi-echelon distribution. In the direct distribution, means of transport, starting from the main distribution center,...
Increased number of container shipping nowadays, brings new challenges for container terminal to improve their operational performance. In addition with the increase of competition between ports, optimal and integrated planning will help terminal to face those challenges. This research studies about optimizing an integrated planning of the container terminal in Indonesia, using a bi-objective optimization...
Multimodal transport offers an advanced platform for more efficient, reliable, flexible and sustainable freight transport. In order to achieve sustainable planning in a complicated transport system, it is very interesting to use methods include in the fields of operational research. In this article, we propose a mathematical model to solve the multi-objective optimization problem applied in the multimodal...
Anugrah Citra Boga is a food processing industry that produces meatballs as their main product. One of the problems in the company is the distribution of the products. Moreover, the distribution cost was never examined scientifically to obtain the optimal value. By simulating the distribution route to minimize the distribution time, then lower cost of the distribution will be expected. Therefore,...
This work focuses on wide-scale freight transportation logistics motivated by the sharp increase of on-line shopping stores and the upsurge of Internet as the most frequently utilized selling channel during the last decade. This huge ecosystem of one-click-away catalogs has ultimately unleashed the need for efficient algorithms aimed at properly scheduling the underlying transportation resources in...
Balanites aegyptiaca (B. aegyptiaca) is one of the plant species targeted and already studied for the production of oilseed-based biofuels. This paper presents an optimization model of B. aegyptiaca seeds supply chain in West African sahelian context. It has been developed considering the West Africa rural context where family farming is mainly practiced. The model has been applied to a theoretical...
By adding a binary relation and a number of assessment factors into an approximation space, a rough assess-ment system was obtained. Based on the assessment factors, the concepts of the weight and comprehensive weight were defined, which leaded to the comprehensive lower value of an edge set, so, a path could be optimized by making use of the comprehensive lower value, also an algorithm called path...
The world food system is a globalized and inter-connected network, and prior research has shown the US is one of the most important countries within this global network. Considering this, any affects on the US food network might have far reaching implications. The objective of this paper is to show how the efficiency of the US food network can be optimized and to examine the tradeoffs between sustainability,...
The author presents a novel declarative approach to modeling, solving and decision support for supply chain problems as a declarative decision support framework. The proposed framework makes it possible to ask different types of questions (general, specific, logical etc.). The implementation of the framework was performed in the CLP (Constraint Logic Programming) environment. To increase the efficiency...
Distribution plays an increasingly important function in delivering value to the consumer. Therefore, organizations need to adopt a holistic view of the entire network. These needs have propelled the modeling of Supply Chain Network Design (SCND) and this study investigates that from the Retail Supply Chain's perspective. The study reports the model formulation of the SCND optimization after carrying...
Growing concerns with environmental issues have resulted in alternatives for urban mobility and public transportation. Among the available options, battery-powered electric buses have been considered in terms of flexibility, sustainability, and emission of pollutants. These buses have a plug-in recharge system that allows them to run without any extra power supply. However, battery recharging during...
Over the last decade, it has been seen a rapid pace in research and development of RFID-based automatic storage and retrieval systems (AS/RSs) due to the usage of increasingly centralized distribution centers to warehouse merchandising products, which are sold using the online method. This paper presents a study of an RFID-enabled warehousing system as part of the research work for future generation...
This research developed a mixed-integer mathematical model for a generic closed-loop supply chain network design (SCND), optimizing all three inherent dimensions of sustainability, namely, cost, environmental, and social impact, simultaneously. The proposed novel hybrid model is designed for a single period and takes into account some real-life characteristics of SC implementation such as multi-echelons,...
Feedback particle filter (FPF) is an algorithm to numerically approximate the solution of the nonlinear filtering problem in continuous time. The algorithm implements a feedback control law for a system of particles such that the empirical distribution of particles approximates the posterior distribution. However, it has been noted in the literature that the feedback control law is not unique. To...
Since the design of supply chain network affects supply chain performance for prolong period, there are number of various models has been formulated to suit the needs of such business contexts. The purpose of this paper is to develop an alternative approach to formulate manufacturing supply chain network design problem involving multi-echelons, multi-commodities, product's architectures, and manufacturing...
The generalized quadratic assignment problem (GQAP) concerns with assigning m facilities to n locations. Multiple facilities can be assigned to a single location as long as the space allows. The aim is to find a way of assignment such that the total cost involved is minimized while respecting the space constraints. The total cost composes of installation and transportation costs, which is obtained...
Transportation engineering is one of the most popular area of Operations Research in which fractional programming is used. In this study, we present two algorithms to find initial basic feasible solution of a linear fractional transportation problem. Also we present a methodology to find optimal solution of the stated problem. Using simulation experiments on large number of examples we compare the...
This paper provides new insights into the feasibility of energy optimal transportation by exploiting weather conditions using road surface and wind data. The approach proposes to alter the speed profile along a route, depending on available weather data. It also incorporates energy optimal routing. The task is formulated as a deterministic as well as a robust optimization problem, where weather conditions...
The paper presents optimal control modeling study for energy-saving of belt conveyor system. Given the transport operations process of bulk terminals, belt conveyor is studied. Firstly, based on the simplified energy calculation model of the belt conveyor, an objective optimization model with the aim to improve transport efficiency and reduce transportation energy consumption is established. In the...
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