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Volume 11 ~ Issue 3

 

 


Volume 11 ~ Issue 3

Research Article  open access
The Kidney Transplant Problem: an approach to evolutionary computing
José Lassance C. Silva, Raul Silveira A. Furtado, Bruno Castro H. Silva
Brazil
Research Inventy: International Journal of Engineering & Science , Volume 11 ~ Issue 3

Abstract

This work addresses the Kidney Transplant Problem (KTP) with priority in the care of organ receptor patients and proposes a resolution methodology based on operational research techniques. In this case, the main objective is to perform as many transplants as possible with the lowest surgical and mobility costs, considering the geographical positions of donors, recipients and hospitals, as well as surgical costs accredited hospitals to perform kidney transplant surgeries. The problem meets the characteristics imposed by the Unified Health System (SUS) of the Health Ministry from the Federative Republic of Brazil. Thus, our work aims to reduce the waiting time of the queue of these patients who need a kidney transplant and give an optimized planning to perform this task. A literature review was made for the specific problem and we found the Kidney Exchange Problem (KEP) with different characteristics from the KTP. It developed for the specific problem: a mathematical model; a set of instances; and a metaheuristic, based on Genetic Algorithm (AG), applies it to solving the problem. The results of the AGare presented with great degree of satisfaction.

Keywords: Genetic Algorithm, Kidney Transplant, Metaheuristic, Combinatorial Optimization.


Research Article  open access
Experimental Evaluation of Bearing Capacity of Thickness and Embedment Depth of a Ring Footings
Muhannad Muhsin, Abbas Fadhil
Brazil
Research Inventy: International Journal of Engineering & Science , Volume 11 ~ Issue 3

Abstract

for several years structural ring footings have been used for their durability advantages beneath the shallow foundations of maritime structures. However, limited knowledge of the efficiency and use of ring footings as traditional shallow foundations is available. The ability of these foundations was tested in of laboratory testing in this study. The effects of skirt rigidity and depth were analyzed in this sense on the bearing ability of skirted footing models. The test results were then compared with other equations of bearing power. It was determined that using structural ring, both soil-rings and the soil-footing depth would increase their support capability up to 1.62 times....

Keywords: ...