A formally exact method to numerically analyze local denaturation in superhelical DNA

1998 ◽  
Author(s):  
Richard M. Fye ◽  
Craig J. Benhan
Keyword(s):  
Exact Method

scholarly journals Reshuffle minimisation to improve storage yard operations efficiency

2021 ◽  
Vol 15 ◽  
pp. 174830262199401
Author(s):  
Hammed Bisira ◽  
Abdellah Salhi
Keyword(s):  
Integer Programming ◽  
Programming Model ◽  
Heuristic Approach ◽  
Container Terminals ◽  
Exact Method ◽  
Computational Results ◽  
Binary Integer Programming ◽  
Integer Programming Model ◽  
Compatibility Test ◽  
Storage Area

There are many ways to measure the efficiency of the storage area management in container terminals. These include minimising the need for container reshuffle especially at the yard level. In this paper, we consider the container reshuffle problem for stacking and retrieving containers. The problem was represented as a binary integer programming model and solved exactly. However, the exact method was not able to return results for large instances. We therefore considered a heuristic approach. A number of heuristics were implemented and compared on static and dynamic reshuffle problems including four new heuristics introduced here. Since heuristics are known to be instance dependent, we proposed a compatibility test to evaluate how well they work when combined to solve a reshuffle problem. Computational results of our methods on realistic instances are reported to be competitive and satisfactory.

scholarly journals An exact method for assortment optimization under the nested logit model

2021 ◽  
Vol 291 (3) ◽  
pp. 830-845
Author(s):  
Laurent Alfandari ◽  
Alborz Hassanzadeh ◽  
Ivana Ljubić
Keyword(s):  
Logit Model ◽  
Exact Method ◽  
Nested Logit ◽  
Nested Logit Model ◽  
Assortment Optimization

New Lower Bounds and Exact Method for them-PVRP

2013 ◽  
Vol 47 (1) ◽  
pp. 38-52 ◽  
Author(s):  
Sandra Ulrich Ngueveu ◽  
Christian Prins ◽  
Roberto Wolfler Calvo
Keyword(s):  
Lower Bounds ◽  
Exact Method

Fast and exact method for computing a stack of images at various focuses from a four-dimensional light field

2016 ◽  
Vol 25 (4) ◽  
pp. 043002 ◽  
Author(s):  
Ziv Mhabary ◽  
Ofer Levi ◽  
Eran Small ◽  
Adrian Stern
Keyword(s):  
Light Field ◽  
Exact Method

Accelerometer correction for the dynamic analysis of damped multi-degree of freedom systems

1969 ◽  
Vol 59 (4) ◽  
pp. 1591-1598
Author(s):  
G. A. McLennan
Keyword(s):  
Dynamic Response ◽  
Dynamic Analysis ◽  
Degrees Of Freedom ◽  
Degree Of Freedom ◽  
Exact Method ◽  
Three Degrees Of Freedom

Abstract An exact method is developed to eliminate the accelerometer error in dynamic response calculations for damped multi-degree of freedom systems. It is shown that the exact responses of a system can be obtained from the approximate responses which are conventionally calculated from an accelerogram. Response calculations were performed for two typical systems with three degrees of freedom for an assumed pseudo-earthquake. The results showed that the approximate responses may contain large errors, and that the correction developed effectively eliminates these errors.

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