Estimating the mitigation effect of Tokai earthquake measures on housing damage: a counterfactual approach

Disasters ◽  
2018 ◽  
Vol 43 (1) ◽  
pp. 181-205
Author(s):  
Takeshi Miyazaki ◽  
Ryu Ohtani ◽  
Taichi Ohno ◽  
Tsuyoshi Takasugi ◽  
Toshihiro Yamada
Keyword(s):  
Tokai Earthquake ◽  
Housing Damage ◽  
Counterfactual Approach

Does Changing the Coach Help Performance? A Counterfactual Approach

2010 ◽  
Author(s):  
Jan Ketil Arnulf ◽  
John Erik Mathisen ◽  
Thorvald Haerem
Keyword(s):  
Counterfactual Approach

scholarly journals A Proper Shape of the Trailing Edge Modification to Solve a Housing Damage Problem in a Gas Turbine Power Plant

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 705
Author(s):  
Thodsaphon Jansaengsuk ◽  
Mongkol Kaewbumrung ◽  
Wutthikrai Busayaporn ◽  
Jatuporn Thongsri
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Structural Dynamics ◽  
Pressure Ratio ◽  
Equivalent Stress ◽  
Total Deformation ◽  
Trailing Edge ◽  
Housing Damage ◽  
The Difference ◽  
Gas Turbine Power Plant

To solve the housing damage problem of a fractured compressor blade (CB) caused by an impact on the inner casing of a gas turbine in the seventh stage (from 15 stages), modifications of the trailing edge (TE) of the CB have been proposed, namely 6.5 mm curved cutting and a combination of 4 mm straight cutting with 6.5 mm curved cutting. The simulation results of the modifications in both aerodynamics variables Cl and Cd and the pressure ratio, including structural dynamics such as a normalized power spectrum, frequency, total deformation, equivalent stress, and the safety factor, found that 6.5 mm curved cutting could deliver the aerodynamics and structural dynamics similar to the original CB. This result also overcomes the previous work that proposed 5.0 mm straight cutting. This work also indicates that the operation of a CB gives uneven pressure and temperature, which get higher in the TE area. The slightly modified CB can present the difference in the properties of both the aerodynamics and the structural dynamics. Therefore, any modifications of the TE should be investigated for both properties simultaneously. Finally, the results from this work can be very useful information for the modification of the CB in the housing damage problem of the other rotating types of machinery in a gas turbine power plant.

Discussion and Closure: California Housing Damage Related to Expansive Soils

1995 ◽  
Vol 9 (3) ◽  
pp. 243-247
Author(s):  
Robert W. Day ◽  
Richard L. Meehan ◽  
Lawrence B. Karp
Keyword(s):  
Expansive Soils ◽  
Housing Damage

Estimating the Energy Gap Among US Children: A Counterfactual Approach

PEDIATRICS ◽  
2006 ◽  
Vol 118 (6) ◽  
pp. e1721-e1733 ◽  
Author(s):  
Y. C. Wang ◽  
S. L. Gortmaker ◽  
A. M. Sobol ◽  
K. M. Kuntz
Keyword(s):  
Energy Gap ◽  
Us Children ◽  
Counterfactual Approach

scholarly journals Modelling the Costs of Unemployment for Young Graduates in Slovakia: A Counterfactual Approach

2019 ◽  
Vol 67 (5) ◽  
pp. 552-566
Author(s):  
Lucia Švábová ◽  
Marek Ďurica ◽  
Tomáš Klieštik
Keyword(s):  
Counterfactual Approach

Possible Worlds Counterfactual Theories of Causation

1980 ◽  
Vol 6 ◽  
pp. 119-138
Author(s):  
Richard Adler
Keyword(s):  
Alternative Treatment ◽  
Possible Worlds ◽  
Great Length ◽  
Current Interest ◽  
Possible Worlds Semantics ◽  
Causal Relations ◽  
Its Analysis ◽  
Counterfactual Theory ◽  
Causal Theories ◽  
Counterfactual Approach

The numerous difficulties facing the traditional Humean regularity approach to the problem of causation have been discussed in the literature at great length. In view of the current interest in possible worlds semantics, it is not surprising that the only serious alternative treatment of causation presently available, the counterfactual approach, has been explored recently as a means of circumventing the apparently unresolvable difficulties facing regularity causal theories. It is the purpose of this paper to suggest that such a strategy holds little promise. Specifically, I will argue that, in addition to giving rise to problems directly analogous to those facing regularity accounts, the counterfactual approach fails in principle to reflect important properties of causal relations as we understand them intuitively. David Lewis's possible worlds account, the most comprehensive counterfactual theory to date, is further criticized for implicit problems with natural lawhood even more serious than those typically raised for regularity accounts, for additional inadequacies in its analysis of causal relations, and for its failure to satisfy basic empiricist epistemological standards.

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