Finding specific peaks (markers) using fuzzy divisive hierarchical associative-clustering based on the chromatographic profiles of medicinal plant extracts obtained at various detection wavelengths

2020 ◽  
Vol 12 (25) ◽  
pp. 3260-3267
Author(s):  
Ileana M. Simion ◽  
Augustin-C. Moţ ◽  
Costel Sârbu
Keyword(s):  
Medicinal Plant ◽  
Hierarchical Clustering ◽  
Plant Extracts ◽  
Clustering Algorithm ◽  
Chemometric Methods ◽  
Fuzzy C Means ◽  
Divisive Hierarchical Clustering ◽  
Medicinal Plant Extracts ◽  
Hierarchical Clustering Algorithm ◽  
Chromatographic Profiles

Advanced chemometric methods, such as fuzzy c-means (FCM), a fuzzy divisive hierarchical clustering algorithm (FDHC), and fuzzy divisive hierarchical associative-clustering (FDHAC), have been successfully applied in this study.

scholarly journals Rebalancing Strategy for Bike-Sharing Systems Based on the Model of Level of Detail

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Zhenghua Hu ◽  
Kejie Huang ◽  
Enyou Zhang ◽  
Qi’ang Ge ◽  
Xiaoxue Yang
Keyword(s):  
Genetic Algorithm ◽  
Hierarchical Clustering ◽  
Traditional Method ◽  
Clustering Algorithm ◽  
Level Of Detail ◽  
Daily Lives ◽  
Effective Time ◽  
Divisive Hierarchical Clustering ◽  
Bike Sharing ◽  
Hierarchical Clustering Algorithm

Traveling by bike-sharing systems has become an indispensable means of transportation in our daily lives because green commuting has gradually become a consensus and conscious action. However, the problem of “difficult to rent or to return a bike” has gradually become an issue in operating the bike-sharing system. Moreover, scientific and systematic schemes that can efficiently complete the task of rebalancing bike-sharing systems are lacking. This study aims to introduce the basic idea of the k-divisive hierarchical clustering algorithm. A rebalancing strategy based on the model of level of detail in combination with genetic algorithm was proposed. Data were collected from the bike-sharing system in Ningbo. Results showed that the proposed algorithm could alleviate the problem of the uneven distribution of the demand for renting or returning bikes and effectively improve the service from the bike-sharing system. Compared with the traditional method, this algorithm helps reduce the effective time for rebalancing bike-sharing systems by 28.3%. Therefore, it is an effective rebalancing scheme.

Screening of 50 medicinal plant extracts for quercetin-3-rutinoside

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
E Sofic ◽  
M Salihovic ◽  
S Huseinovic ◽  
S Cavar ◽  
A Copra-Janicijevic ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Plant Extracts ◽  
Medicinal Plant Extracts

Screening of Venezuelan medicinal plant extracts for cytostatic and cytotoxic activity against tumour cell lines

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
P Taylor ◽  
M Arsenak ◽  
MJ Abad ◽  
Á Fernández ◽  
R Gonto ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Cytotoxic Activity ◽  
Cell Lines ◽  
Plant Extracts ◽  
Tumour Cell ◽  
Medicinal Plant Extracts ◽  
Tumour Cell Lines
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