scholarly journals Development of ASC and Conjugated Circuit Calculation Program by Means of Enumeration Algorithm for Kekulé Structures

2018 ◽  
Vol 17 (2) ◽  
pp. 92-101
Author(s):  
Dai MORIKAWA ◽  
Yasushi NOMURA ◽  
Noriyuki MIZOGUCHI
Keyword(s):  
Kekulé Structures ◽  
Enumeration Algorithm

The Location Problem of Given and Indivisible Different Units

1970 ◽  
Vol 2 (3) ◽  
pp. 341-356
Author(s):  
G. Jándy
Keyword(s):  
Exact Solution ◽  
Heuristic Algorithm ◽  
Network Flow ◽  
Location Problem ◽  
Optimal Solution ◽  
Type Problem ◽  
Distribution Problem ◽  
Enumeration Algorithm ◽  
Weighted Distribution ◽  
Partial Enumeration

In cases where certain simplifications are allowed, the location optimisation of given and indivisible different economic units may be modelled as a bi-value weighted distribution problem. The paper presents a heuristic algorithm for this network-flow-type problem and also a partial enumeration algorithm for deriving the exact solution. But it is also pointed out that an initial sub-optimal solution can quickly be improved with a derivation on a direct line only, if the exact solution is not absolutely essential. A numerical example is used to illustrate the method of derivation on a direct line starting with an upper bound given by a sub-optimal solution.

Nanotubes:  Number of Kekulé Structures and Aromaticity

2003 ◽  
Vol 43 (2) ◽  
pp. 609-614 ◽  
Author(s):  
István Lukovits ◽  
Ante Graovac ◽  
Erika Kálmán ◽  
György Kaptay ◽  
Péter Nagy ◽  
...  
Keyword(s):  
Kekulé Structures

scholarly journals A connection between the Kekulé structures of pentagonal chains and the Hosoya index of caterpillar trees

2017 ◽  
Vol 232 ◽  
pp. 230-234 ◽  
Author(s):  
Chuanqi Xiao ◽  
Haiyan Chen ◽  
Andrei M. Raigorodskii
Keyword(s):  
Hosoya Index ◽  
Kekulé Structures

Number of kekulé structures of single-chain corona-condensed benzenoids (cycloarenes)

1986 ◽  
Vol 125 (3) ◽  
pp. 218-220 ◽  
Author(s):  
John L. Bergan ◽  
Sven J. Cyvin ◽  
Bjorg N. Cyvin
Keyword(s):  
Kekulé Structures ◽  
Single Chain
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