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Volume 3 (1992)
- Issue 4 Pages 177-
- Issue 3 Pages 107-
- Issue 2 Pages 57-
- Issue 1 Pages 1-
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Volume 3, Issue 4
Displaying 1-6 of 6 articles from this issue
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—An Approximate Method for Bimodally Distributed Orientation Data—Teruaki ISHIE, Kiyoji SHIONO1992 Volume 3 Issue 4 Pages 177-202
Published: December 25, 1992
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThis paper discusses the statistical method for directional orientation data. The results are summerized as follows.
The normal orientation probability paper based on “von Mises” probability density function is usefull to analyze two dimensional directional orientation data and enables us to estimate statistical measures of directional orientation data on paper. Further, the normal orientation probability paper can be applied to statistical analyses of three dimensional directional orientation data. It becomes possible to decompose each average orientation of bimodal orientation data which distribute around two centers. After all, mean directions as average orientations and confidence limits are estimated from distribution groups by using normal orientation probability paper.View full abstractDownload PDF (2714K) -
Kiyoji SHIONO, Kiyoshi WADATSUMI1992 Volume 3 Issue 4 Pages 203-210
Published: December 25, 1992
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThe present paper discusses a logical structure of geologic knowledge related to the laws of superposition, original horizontality and original lateral continuity, based on mathematical formulation. First we define several geologic relations between two strata; i.e. binary relations on set B of strata, based on a function f from a subset Ω of the real space into set B. Next we discuss what are derived from three axioms :
[A1] W∪W-1∪E=I, [A2] L⊂W and [A3] C⊂K.
The axiom A1 provides a logical basis for geologists to infer spatial relations between strata from observation of exposed strata. The axiom A2 generates the ordering structure in set B which is called the stratigraphic sequence, and the axiom A3 introduces a historical view into geology. Further from a set of three axioms, we can deduce a validity of the geologic method to infer the formative order of strata from field works.
The present study suggests a possibility that we can systematize our geologic knowledge in a formal system based on several axioms.View full abstractDownload PDF (1072K) -
Harufumi NORO, Norio MATSUMOTO1992 Volume 3 Issue 4 Pages 211-227
Published: December 25, 1992
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSThis report explains the implementation of “MATRIX data type” into C language. The MAT-RIX data type eases programming of linear algebra. Fundamental functions to manipulate the matrices are also explained.View full abstractDownload PDF (1416K) -
Examples on the Kanto and Kinki DistrictsJunko IWAHASHI1992 Volume 3 Issue 4 Pages 229-234
Published: December 25, 1992
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (7740K) -
Katsuaki KOIKE1992 Volume 3 Issue 4 Pages 235-238
Published: December 25, 1992
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (562K) -
Examples of Research ActivitiesTsuyoshi SUGANO1992 Volume 3 Issue 4 Pages 239-244
Published: December 25, 1992
Released on J-STAGE: February 26, 2010
JOURNAL FREE ACCESSDownload PDF (1028K)
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