Using R-software for classification of soil granulometry classes and creating the Ferrers diagrams

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Denis A. Gavrilov

The article describes a detailed algorithm to recompute the size of the elementary soil particles obtained by Kachinsky technique (a method conventionally used by Russian soil scientists) into the international granulometric size distribution pattern of 2000-50-2 µm using the formula introduced by E.V. Shein in 2009. The article also describes step-by-step procedures to create Ferrers diagrams using the soiltexture”, “plotrix” и “ggtern”packages in R environment. One of the advantages of R software is its free distribution and usage, vast range of options for the diagram settings, and, in the process of doing so, accruing the experience of working with a very popular language for statistical analysis and data visualization.

1954 ◽  
Vol 21 (1) ◽  
pp. 50-54 ◽  
Author(s):  
W. G. Whittlestone

An examination of the fat-globule size distribution pattern has been made throughout the lactation for one quarter of one cow, samples being taken at different stages in the milking process using a normal milking machine with sampling device attached.


2019 ◽  
Vol 19 (2) ◽  
pp. 38-55
Author(s):  
Sebastian Kokot ◽  
Sebastian Gnat

Abstract Research background: The article discusses the issue of the identification and measurement of market characteristics of real estate for valuation purposes. This problem is the most difficult stage of the whole valuation process in terms of both a substantive, methodological and analytical basis. Goal: The aim of the research is to outline and explore on the basis of literature studies as well as developed problems to be solved in the process of mass valuation together with the presentation of an exemplary solution. Methodology: In the theoretical part a hypothetical-deductive method which consists of developing a certain hypothesis and deducing its consequences was applied. The empirical section uses the method of scientific discussion among scientists and practicing valuers and, for the presentation of the results; some graphical methods were used for a statistical analysis. Results: As a result of the conducted research, criteria to be used in identifying and classifying market characteristics for the purposes of valuation were identified and a set of market characteristics of properties was developed along with a method of identifying their states for the purposes of mass valuation. Novelty: The article proves that the problem of the identification and classification of market characteristics of real estate for valuation purposes is extremely important from the point of view of the valuation process and the results obtained as a result of it as well. In addition, for some features, it is proposed to develop special measures such as the plot shape attractiveness ratio. This meets the problem of the objective measurement of market features of real estate. In relation to other features, the legitimacy of the expert approach was pointed out.


1970 ◽  
Vol 38 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Bekir Dogan ◽  
Ahmet Duran ◽  
Erdogan Hakki

Eighteen taxa of the genus Jurinea Cass. growing naturally in Turkey were classified by numerical taxonomic analysis. Morphological and palynological characters of each individual were measured and quantified on the basis of 51 traits. Ten plants were chosen randomly for the measurements of metric characters related to the external morphology of the taxa and the average values used for statistical analysis via NTSYS-pc package. Standardized data were used to generate the dendrogram that revealed the phenetic relationships of the taxa. Geographic distribution pattern of the Jurinea species appear to be closely related to the Anatolian Diagonal. Key words: Numerical analyses; Jurinea; Asteraceae; Turkey DOI: 10.3329/bjb.v38i1.5118 Bangladesh J. Bot. 38(1): 47-53, 2009 (June)


1975 ◽  
Vol 18 (1) ◽  
pp. 67-77
Author(s):  
I. Imbert ◽  
Y. Barra ◽  
M. Berebbi

Subclones isolated from a Chinese hamster hybrid line, derived from fusion of an actinomycin D-resistant and an actinomycin D-sensitive strain, were studied with respect to their resistance to actinomycin D, karyology, transplantability and agglutination by concanavalin A. Statistical analysis of the results allowed the establishment of a classification of the strains based on increasing resistance to actinomycin D. There appeared to be an inverse correlation between actinomycin D-resistance and tumorigenicity and a positive correlation between this resistance and the presence of a marker chromosome.


Author(s):  
Elisabeth de Boer

The chapter starts with an overview of the history of dialect classification in Japan. A puzzling aspect of the distribution pattern of the Japanese dialects is the fact that many features, which cannot all be explained as retentions or simplifications, recur in geographically distant areas. These similarities have been commonly but unsatisfyingly regarded as the result of parallel independent developments. Phonological (including tonal), morphological, and lexical features are selected to illustrate the splits that result in the different branches of Japonic. Based on shared innovations, the new classification at the end of the chapter proposes a Izumo-Tōhoku branch, as well as a Kyūshū-Ryūkyū branch.


Sign in / Sign up

Export Citation Format

Share Document