Fundamental Study on the New Method to Estimate Vibration Level on a Ship

In Japan, there are many houses built in limited space as well as in close proximity to causeways and railroads, due mainly to concentration of population in the cities in recent years. Slender structures and especially 3-story houses are susceptible to vibration induced by external forces such as traffic. This effect often creates an uncomfortable environment for habitation. Because houses often have a complex geometry, it is difficult to establish the vibration characteristics of a structure. Furthermore, the response characteristics of a house will change with environmental conditions. A prototype Active Mass Damper (AMD) has been developed to address some of these issues. This has been tested in an exhibition house in Tokyo. It uses two AMD’s of 1,725N mass each for both X-axis and Y-axis. Both AMD’s are applied in X and Y directions and are installed at RooF level, they are controlled by Direct Displacement Feedback (DDFB). The test showed that the AMD could dramatically reduce vibration. Of particular note was reduction about 6dB to 8dB (L10) in the first mode of vibration even though the house mass is double the prototype target weight. Also, vibration was dramatically decreased by the AMD on 3rd floor of the house. Vibration level and comfort are important criteria for this kind of system.

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The Position of Middle Irish: Historical Linguistics and Glottochronology

Roczniki Humanistyczne ◽

10.18290/rh216911-7s ◽

2021 ◽

Vol 69 (11 Zeszyt specjalny) ◽

pp. 129-148

Author(s):

Tatyana A. Mikhailova

Keyword(s):

Historical Linguistics ◽

Retention Rate ◽

Word List ◽

New Method ◽

Fundamental Study ◽

Irish Language ◽

The 1950S ◽

Basic Vocabulary ◽

Made In ◽

Middle Irish

A new method of “dating” language changes was proposed in the 1950s by Morris Swadesh (1952, 1955), who examined changes in the basic vocabulary of a language and postulated that the 1000-year retention rate represents 86% of the vocabulary; in other words, 14 words from a 100-word list must be replaced. An attempt to calculate the split between Goidelic and Brittonic based on this approach was made in Greene (1964) and later in a fundamental study by Elsie (1979) containing, unfortunately, some inaccuracies. In Blažek and Novotná (2006) this split between Goidelic and Brittonic is dated to ca. 1200 BC. The authors used a new calibration, with a change in the constant of disintegration λ from 0.14 to 0.05 per millennium, the elimination of borrowings and the inclusion of synonyms in the wordlist. The use of synonyms compromises the original Swadesh idea of the basic vocabulary of a language, and automatically leads to its artificial archaisation. This article tries to demonstrate the possibility of an analysis of semantic changes in basic Irish vocabulary using the non-modified version of the Swadesh method and to define a possible date for the growth of the Middle Irish language stratum.

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A fundamental study of a new method for thickness measurement of C.C. powder film.

Transactions of the Iron and Steel Institute of Japan ◽

10.2355/isijinternational1966.24.478 ◽

1984 ◽

Vol 24 (6) ◽

pp. 478-481

Author(s):

Yukio NAKAMORI ◽

Osami ICHIKO ◽

Hiromu SOGA

Keyword(s):

Thickness Measurement ◽

New Method ◽

Fundamental Study

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Selective Sampling and Orientation of Non-Homogeneous Tissues

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100100238 ◽

1968 ◽

Vol 26 ◽

pp. 98-99

Author(s):

C. C. Clawson ◽

L. W. Anderson ◽

R. A. Good

Keyword(s):

Electron Microscopy ◽

Electron Microscope ◽

Light Microscopy ◽

Random Sampling ◽

New Method ◽

Microscope Examination ◽

Small Areas ◽

Selective Sampling ◽

Large Numbers ◽

Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

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