Heuristic procedures for solving mixed-integer harvest scheduling–transportation planning models

1995 ◽  
Vol 25 (10) ◽  
pp. 1618-1626 ◽  
Author(s):  
Andrés Weintraub ◽  
Adrian Magendzo ◽  
Ariel Magendzo ◽  
Daniel Malchuk ◽  
Greg Jones ◽  
...  

Modeling both road construction and land management activities as 0–1 variables greatly enhances the spatial aspect of linear programming models dealing with harvest scheduling and transportation planning. In previous work we developed a heuristic procedure that modeled only road construction as 0–1 variables. We have expanded this past procedure to also consider land management decisions as 0–1 variables. This paper outlines the heuristic procedure developed for modeling both road building and land management decisions as integer variables in light of adjacency constraints. The heuristic procedure allows economic or physical objectives to be maximized or minimized. A wide variety of side constraints can be accommodated and these constraints can include both road construction and land management decision variables. These heuristic procedures have performed well on models tested thus far.

2020 ◽  
Vol 54 (3) ◽  
pp. 431-448 ◽  
Author(s):  
Shannan K. Crow ◽  
Gail T. Tipa ◽  
Kyle D. Nelson ◽  
Amy L. Whitehead

2014 ◽  
Vol 15 (2) ◽  
pp. 121-128
Author(s):  
Jorge Hans Alayo

Abstract Existing transmission planning models consider basic aspects of the problem. In practice, a transmission utility needs to model other important details such as operation cost of the power system. In this article, a least cost transmission expansion model is proposed considering the operation cost in order to model the trade-off between building new transmission capacity and increasing the power system’s operation cost. The proposed model is transformed into a mixed integer linear programming problem using linearization techniques and solved with CPLEX. Finally, results of the model for the Garver test system and IEEE 24-bus test system are shown.


Author(s):  
Tetiana Sych ◽  
◽  

The article considers the factors influencing the efficiency of management decisions made by local government bodies in the modern conditions of public administration reform and the development of local self-government in Ukraine. The author outlines the features of this problem, the main features of state-management decisions, the essence of the concepts "effect", "efficiency of management decisions", the main approaches to the study of the problem of decision-making are highlighted. The main attention is paid to the direction of research, which takes into account the human factor. The main ideas of the representative of this direction - the Nobel laureate D. Kahneman, presented in the book "Noise", are considered. This work raises the issue of system errors among those who make decisions. The views of the domestic scientist O. Maltsev on the designated problem and the provisions of D. Kahneman's book are presented. The results of the analysis by scientists of the influence of the human factor and psychological characteristics of management decision-making on the efficiency of decisions are reflected. The conclusions of scientists regarding the need to take into account the qualities of a decision- making person and his professional training are summarized. The main characteristics of the personality that influence decision-making are given from the domestic scientific literature on public administration problems. In accordance with these ideas, the requirements for the positions of civil servants, local self-government bodies, as well as the modern practice of training specialists and managers in this field are considered. It is concluded that the primary importance for making effective decisions by local government bodies is the use by specialists and managers of modern technologies for developing and making management decisions, the development of their personal qualities for making management decisions in the process of training and obtaining specialized management education in universities.


2019 ◽  
Vol 4 (9) ◽  
pp. 34-44
Author(s):  
А. Тебекин ◽  
A. Tebekin

The author's classification of management decision-making methods, including twenty-five classes of methods, is presented for the first time. As part of the general classification of management decision-making methods, the role and place of a group of methods for making managerial decisions based on the optimization of performance indicators was demonstrated. In the group of methods for making managerial decisions based on the optimization of performance indicators, a subgroup of programming methods (linear, nonlinear and dynamic) is considered in detail. The features of use and application are shown when making managerial decisions of a subgroup of programming methods.


2021 ◽  
Vol 49 (2) ◽  
pp. 162-172
Author(s):  
Snizhko L ◽  
◽  
Buzun T ◽  
Razvodovska V ◽  
◽  
...  

On the basis of analysis of existing approaches to the process of decision making, in this article the procedure of taking optimal operational decisions is proposed, which describes in detail all of its aspects and features related to the specifics of the operational activities of transport enterprises. In this procedure the basic steps are those directly related to the modeling: formulation of the problem (formalization of the original problem), construction of the model, its solution, credibility and adequacy check, restoration (or adjustment) of the model. The object of the research is decision-making process in the operational management of transport enterprises. The purpose of the research is to develop a procedure for the process of making optimal operational decisions based on existing approaches to the decision-making process, using modeling as a scientific tool to substantiate them. The research method is methods of system analysis and modeling. It has been discovered that the need to reduce the subjectivity of the process of making important decisions in the operational activities of transport enterprises and increase its scientific validity is especially relevant today, in the face of threats and uncertainty about the external environment of the organization. All methods of rational decision-making are based on models, which, in turn, are scientific tools. Modeling creates a serious informational and methodological basis for structural analysis of decisions needed to improve the management process for operational managers and hence - to increase the level of management in general, because it makes them more systematic, and the tools used during this help them be more rational. The results of the article can be implemented during making complex and important management decisions in the operational activities of both transport enterprises and other business entities of various activities, regardless of the organizational and legal form and ownership. KEY WORDS: MODELING METHOD, MODELING, MODEL, TRANSPORT ENTERPRISE, OPERATIONAL ACTIVITY, OPERATIONS MANAGER, MANAGEMENT DECISION.


2020 ◽  
Vol 49 (3) ◽  
pp. 613-627 ◽  
Author(s):  
M. G. Mostofa Amin ◽  
Tamie L. Veith ◽  
James S. Shortle ◽  
Heather D. Karsten ◽  
Peter J. A. Kleinman

2017 ◽  
Vol 15 (6) ◽  
pp. 319-327 ◽  
Author(s):  
Heather E Golden ◽  
Irena F Creed ◽  
Genevieve Ali ◽  
Nandita B Basu ◽  
Brian P Neff ◽  
...  

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