A COMMENT ON WELLS' DISTANCE COEFFICIENT AS A HYBRIDIZATION INDEX

Taxon ◽  
1980 ◽  
Vol 29 (5-6) ◽  
pp. 667-667 ◽  
Author(s):  
Jack Maze
Keyword(s):  
Distance Coefficient ◽  
Hybridization Index

Characterization of Stylosanthes introductions by using seed protein patterns

1975 ◽  
Vol 26 (3) ◽  
pp. 467 ◽  
Author(s):  
PJ Robinson ◽  
RG Megarrity
Keyword(s):  
Euclidean Distance ◽  
Seed Protein ◽  
Pattern Analysis ◽  
Polyacrylamide Gel Electrophoresis ◽  
Species Level ◽  
Protein Patterns ◽  
Data Set ◽  
Distance Coefficient ◽  
Selection Of

Seed protein patterns of 182 Stylosanthes accessions, representing 16 species and two hybrids, were obtained by polyacrylamide gel electrophoresis of crude extracts. All species could be recognized by examination of photographs and densitometer traces of the gels. Within the species capitata, guyanensis, hamata and viscosa considerable variation occurred, whilst the variation in humilis, scabra and fruticosa was not as great. Data from the densitometer traces were analysed by various methods of pattern analysis and the resulting classifications compared. A variance-standardized Euclidean distance coefficient was found to be the similarity measure of choice, whilst selection of fusion strategy was not as critical.Species relationships obtained by using the chemical data were not in agreement with the accepted taxonomic division of the genus into the sections Styposanthes and Stylosanthes. A classification based on the complete data set was compared with a working classification based on morphological and agronomic data, which is used in the agronomic assessment of the genus. Only within S. scabra did the two classifications conform. Morphological–agronomic (M–A) types within the species hamata and subsericea could be distinguished by the examination of the fine structure of the densitometer traces, whilst groups based on protein data in the species ahumilis, guyanensis, fruticosa and viscosa did not correspond with M–A groups. The application of seed protein patterns as a rapid and inexpensive means of identifying introductions of the genus at the species level, as well as characterizing types within certain species, is proposed.

An improved artificial bee colony algorithm for addressing distributed flow shop with distance coefficient in a prefabricated system

2019 ◽  
Vol 57 (22) ◽  
pp. 6922-6942 ◽  
Author(s):  
Jun-qing Li ◽  
Shun-Chang Bai ◽  
Pei-yong Duan ◽  
Hong-yan Sang ◽  
Yu-yan Han ◽  
...  
Keyword(s):  
Artificial Bee Colony Algorithm ◽  
Artificial Bee Colony ◽  
Flow Shop ◽  
Bee Colony ◽  
Distance Coefficient

Computation Model of Case Similarity Based on Uneven Weight Distance Coefficient

2010 ◽  
Vol 44-47 ◽  
pp. 3965-3969
Author(s):  
Shou Ming Hou ◽  
Li Juan He ◽  
Wen Peng Xu ◽  
Hua Tao Fan ◽  
Zhong Qi Sheng
Keyword(s):  
Conceptual Design ◽  
Rapid Response ◽  
Computational Method ◽  
Structure Model ◽  
Computation Model ◽  
Attribute Weight ◽  
Retrieval Problem ◽  
Similarity Computation ◽  
Rolling Guide ◽  
Distance Coefficient

In order to solve the retrieval problem of design example in rapid response design, similarity computation model among design examples is given, computation of attribute weight of design example is done based on the method of uneven weight distance coefficient, computation of similarity between product structure model that meet the requirement of customers and design examples existed is done by the method of combination weight. This method has been applied in rolling guide conceptual design based on example inference, the result indicated that the weight computational method proposed is simple and the reliability is good, it can solve the intelligent retrieval problem of design examples in rapid response design.

scholarly journals CALCULATION OF THE Bc LEPTONIC DECAY CONSTANT USING THE SHIFTED N-EXPANSION METHOD

2006 ◽  
Vol 21 (32) ◽  
pp. 6699-6714 ◽  
Author(s):  
SAMEER M. IKHDAIR ◽  
RAMAZAN SEVER
Keyword(s):  
Short Distance ◽  
Decay Constant ◽  
Expansion Method ◽  
Leptonic Decay ◽  
Scaling Relation ◽  
Potential Models ◽  
The One ◽  
Distance Coefficient

We give a review and present a comprehensive calculation for the leptonic constant fBc of the low-lying pseudoscalar and vector states of Bc-meson in the framework of static and QCD-motivated nonrelativistic potential models taking into account the one-loop and two-loop QCD corrections in the short distance coefficient that governs the leptonic constant of Bc quarkonium system. Further, we use the scaling relation to predict the leptonic constant of the nS-states of the [Formula: see text] system. Our results are compared with other models to gauge the reliability of the predictions and point out differences.

Variation in song patterns of Antipodean Teleogryllus species (Orthoptera: Gryllidae) and a proposed phenetic classification

1970 ◽  
Vol 48 (4) ◽  
pp. 797-801 ◽  
Author(s):  
C. Madsen ◽  
V. R. Vickery ◽  
J. Nowosielski
Keyword(s):  
Cytological Study ◽  
Morphological Evidence ◽  
Teleogryllus Commodus ◽  
Phenetic Classification ◽  
Distance Coefficient

The stridulations of eight sample populations of Teleogryllus commodus servillei (Saussure) and T. oceanicus (Le Guillou) were recorded and analyzed. Sokal's "distance coefficient" formula was used to derive a phenetic classification of the populations. The analysis indicates the same relationships as were previously indicated, by Chen et al. (1967) on morphological evidence, and by Lim et al. (1969) on cytological study.

scholarly journals The distance puzzle: on the interpretation of the distance coefficient in gravity equations

2004 ◽  
Vol 83 (3) ◽  
pp. 293-298 ◽  
Author(s):  
Claudia M. Buch ◽  
Jörn Kleinert ◽  
Farid Toubal
Keyword(s):  
Gravity Equations ◽  
Distance Coefficient

scholarly journals Diversity assessment of hulled barley (Hordeum vulgare L.) accessions of ICARDA in Indian condition using cluster analysis

2018 ◽  
Author(s):  
Pawan Kumar ◽  
Swati Pratap ◽  
RP.S. Verma ◽  
A.N. Tikle ◽  
Rekha Malik
Keyword(s):  
Cluster Analysis ◽  
Plant Height ◽  
Distance Matrix ◽  
Grain Weight ◽  
Hordeum Vulgare L ◽  
Diversity Assessment ◽  
Days To Heading ◽  
Research Platform ◽  
Distance Coefficient ◽  
1000 Grain Weight

A total of 310 Barley accessions collected from ICARDA, Lebanon and grown in Indian condition at ICARDA-IRP (India Research Platform), Amlaha, (M.P.) were analyzed for morphological and genetic variability using nine agro-morphological traits i.e. Plant height (cm), number of tillers per plant, days to heading, number of ear heads per pant, length of ear (cm), number of spikelets per earhead, number of grains per earhead, yield per plant (g), and 1000-grain weight (g). The highest coefficient of variation as a result of highest diversity among the genotypes were found for grains per earhead (37.5%), spikelets per earhead (37.5%), yield per plant (35.3%), tillers per plant (31.3%) and earhead per plant (31.2%). However, ear length (16.9%), days to heading (15.4%), 1000-grain weight (13.5%) and plant height (11.2%) have conributued less to diversity with lower cofficient of variation. In cluster analysis, all the characters were used to construct a distance matrix using the Euclidian coefficient, and used to generate dendrogram showing similarity among all the genotypes, distance coefficient ranged between 0 and 200 which reveal the genetic diversity among genotypes. These exotic accessions evaluated can be further used for primary or secondary introduction in Indian breeding program.

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