Woody biomass and mill waste utilization opportunities in Alabama: Transportation cost minimization, optimum facility location, economic feasibility, and impact

2010 ◽  
Vol 30 (4) ◽  
pp. 720-732 ◽  
Author(s):  
Burak Aksoy ◽  
Harry Cullinan ◽  
David Webster ◽  
Kevin Gue ◽  
Sujith Sukumaran ◽  
...  
2018 ◽  
Vol 6 (5) ◽  
pp. 321-325 ◽  
Author(s):  
Ravi Kumar R ◽  
Radha Gupta ◽  
Karthiyayini O

Transportation problem (TP) in operations research is a widely used optimization technique to study the problems concerned with transporting goods from production places to sale points. The TP may have one or more objectives such as minimization of transportation cost, minimization of distance with respect to time, and so on. There is a systematic method to solve such problems. For this, we find the Initial Basic Feasible Solution (IBFS) to the given problem. North West corner method, least cost method, Vogel’s approximation method are the standard methods one uses to find the IBFS.  In recent years, there are several other methods are proposed to solve such problems. In this paper, we propose a new technique named as Direct Sum Method (DSM) and its effectiveness is compared with the standard methods. The result shows that it is easy to compute and near to the optimum solution of the problem.


2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Jin Qin ◽  
Hui Xiang ◽  
Yong Ye ◽  
Linglin Ni

A stochastic multiproduct capacitated facility location problem involving a single supplier and multiple customers is investigated. Due to the stochastic demands, a reasonable amount of safety stock must be kept in the facilities to achieve suitable service levels, which results in increased inventory cost. Based on the assumption of normal distributed for all the stochastic demands, a nonlinear mixed-integer programming model is proposed, whose objective is to minimize the total cost, including transportation cost, inventory cost, operation cost, and setup cost. A combined simulated annealing (CSA) algorithm is presented to solve the model, in which the outer layer subalgorithm optimizes the facility location decision and the inner layer subalgorithm optimizes the demand allocation based on the determined facility location decision. The results obtained with this approach shown that the CSA is a robust and practical approach for solving a multiple product problem, which generates the suboptimal facility location decision and inventory policies. Meanwhile, we also found that the transportation cost and the demand deviation have the strongest influence on the optimal decision compared to the others.


2020 ◽  
Vol 37 (05) ◽  
pp. 2050024 ◽  
Author(s):  
Fanrong Xie ◽  
Zuoan Li

The average transportation cost minimization of capacitated transportation problem with bounds on rim conditions (CTPBRC) is an important optimization problem due to the requirement of low unit cost consumption in production system. In the literature, there is only one approach to solving a special case of this problem, but it is not applicable to the general case. In this paper, this problem is reduced to a series of finding the minimum cost maximum flow in a network with lower and upper arc capacities, and two iterative algorithms are proposed as more generalized solution method for this problem as compared to the existing approach. Computational experiments on randomly generated instances validate that the two iterative algorithms are generally able to find the minimum average transportation cost solution to CTPBRC efficiently for the general case, in which one iterative algorithm has higher efficiency than the other for large size instances.


Electronics ◽  
2021 ◽  
Vol 10 (21) ◽  
pp. 2713
Author(s):  
Abdul Rauf ◽  
Ali T. Al-Awami ◽  
Mahmoud Kassas ◽  
Muhammad Khalid

In this paper, economic feasibility of installing small-scale solar photovoltaic (PV) system is studied at the residential and commercial buildings from an end-user perspective. Based on given scenarios, the best sizing methodology of solar PV system installation has been proposed focusing primarily on the minimum payback period under given (rooftop) area for solar PV installation by the customer. The strategy is demonstrated with the help of a case study using real-time monthly load profile data of residential as well as commercial load/customers and current market price for solar PVs and inverters. In addition, sensitivity analysis has also been carried out to examine the effectiveness of net metering scheme for fairly high participation from end users. Since Saudi Arabia’s Electricity and Co-generation Regulatory Authority (ECRA) has recently approved and published the net metering scheme for small-scale solar PV systems allowing end users to generate and export energy surplus to the utility grid, the proposed scheme has become vital and its practical significance is justified with figures and graphs obtained through computer simulations.


2017 ◽  
Vol 27 (4) ◽  
pp. 481-497 ◽  
Author(s):  
Kavita Gupta

In this paper, we present a mathematical model of delivery logistics of swine flu vaccine in a rural area. The objective is to make the medicine available at the Primary health centres of that area in such a way that the total cost (purchasing and cartage) of obtaining the flu vaccination is minimized and the demand of the demand centres is met. One more constraint is taken into consideration: once the bottle of the medicine is opened, it has to be given to a fixed number of patients requiring swine flu vaccine simultaneously, failing which, the proportion of unused medicine becomes obsolete and can not be administered to the patients. But if the bottle of medicine could not be used fully at a time then, the unused medicine can be sold back at a discounted price. Under such conditions, our next objective is to determine the size of order that must be placed so that the expected total profit per year is maximized. The methodology to achieve this objective is: first, formulate the problem as a fixed charge capacitated transportation model with bounds on rim conditions to determine the number of units that should be purchased from various distribution centres such that the total cost (purchasing cost + cartage) of obtaining the medicine is minimized. Further, model the problem as an inventory model to determine the size of order.


AGROINTEK ◽  
2021 ◽  
Vol 15 (2) ◽  
pp. 624-632
Author(s):  
Tauny Akbari ◽  
Leni Sumarni

Tempe is one of Indonesia's special foods made from soybeans. This study aims to identify and analyze application of cleaner production to the tempe industry. Analysis of the application of cleaner production is done by the quick scanning method at each stage of the production process and then tested for its technical and economic feasibility (PBP). The analysis results of the application of cleaner production in the tempe industry are tool modification, fuel substitution, use of personal protective equipment, reuse, recycle and reduce. Based on the results of technical and economic feasibility tests, the alternative application of cleaner production in the form of solid waste utilization of soybean husks as animal feed is the first priority scale to be applied to the tempe industry


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