scholarly journals SEISMIC RISK EVALUATION METHOD FOR BUILDING STRUCTURES BASED ON UNIFORM HAZARD RESPONSE SPECTRA CONSIDERING AMPLIFICATION OF SUBSURFACE STRUCTURE

2004 ◽  
Vol 69 (583) ◽  
pp. 23-30 ◽  
Author(s):  
Hiroshi ISHIDA ◽  
Masato MOTOSAKA
Keyword(s):  
Seismic Risk ◽  
Risk Evaluation ◽  
Evaluation Method ◽  
Response Spectra ◽  
Building Structures ◽  
Subsurface Structure ◽  
Hazard Response

A Reliability-Based Dual Level Seismic Design Procedure for Building Structures

1995 ◽  
Vol 11 (3) ◽  
pp. 417-429 ◽  
Author(s):  
Kevin R. Collins
Keyword(s):  
Seismic Design ◽  
Design Procedure ◽  
Response Spectra ◽  
The United States ◽  
Complex Problem ◽  
Building Structures ◽  
Inelastic Behavior ◽  
Earthquake Excitation ◽  
Final Design ◽  
Hazard Response

structural design, Limit design, Spectra The seismic design provisions of most building codes in the United States specify ground motion parameters for various regions of the country and provide simple formulas to determine a distribution of lateral forces for which the structure should be designed. The simple formulas typically involve the use of one or more “factors” to account for anticipated inelastic behavior of the structure, relative importance of the structure, and site soil effects. Although these code provisions are very simple to use, they oversimplify a complex problem and are based on many implicit assumptions which many designers may not appreciate. Furthermore, the reliability of the final design is not known. This paper describes the key features of an alternative seismic design procedure in which the underlying assumptions are more clearly defined and which provides a more uniform level of reliability in the final design. The procedure requires the designer to consider two levels of earthquake excitation. An “equivalent” single-degree-of-freedom model and uniform hazard response spectra are used to predict structural performance. The alternative procedure should enable designers to achieve code-specified target performance objectives for moderate and severe levels of earthquake excitation.

Study on seismic risk evaluation method by microtremor H/V spectral ratio for the super soft ground area

2019 ◽  
Author(s):  
Masayuki Yamada ◽  
Koji Hada ◽  
Kazuo Yoshida ◽  
Yoshinori Fujino ◽  
Yoshiya Hata
Keyword(s):  
Seismic Risk ◽  
Risk Evaluation ◽  
Evaluation Method ◽  
Spectral Ratio ◽  
Soft Ground

A Practical Conflicting Role-based Cloud Security Risk Evaluation Method

2019 ◽  
Vol 13 ◽  
Author(s):  
Jin Han ◽  
Jing Zhan ◽  
Xiaoqing Xia ◽  
Xue Fan
Keyword(s):  
Risk Evaluation ◽  
Evaluation Method ◽  
Service Providers ◽  
Risk Preferences ◽  
Cloud Service ◽  
Cloud Security ◽  
Third Party ◽  
Security Evaluation ◽  
Security Risk ◽  
Cloud Users

Background: Currently, Cloud Service Provider (CSP) or third party usually proposes principles and methods for cloud security risk evaluation, while cloud users have no choice but accept them. However, since cloud users and cloud service providers have conflicts of interests, cloud users may not trust the results of security evaluation performed by the CSP. Also, different cloud users may have different security risk preferences, which makes it difficult for third party to consider all users' needs during evaluation. In addition, current security evaluation indexes for cloud are too impractical to test (e.g., indexes like interoperability, transparency, portability are not easy to be evaluated). Methods: To solve the above problems, this paper proposes a practical cloud security risk evaluation method of decision-making based on conflicting roles by using the Analytic Hierarchy Process (AHP) with Aggregation of Individual priorities (AIP). Results: Not only can our method bring forward a new index system based on risk source for cloud security and corresponding practical testing methods, but also can obtain the evaluation result with the risk preferences of conflicting roles, namely CSP and cloud users, which can lay a foundation for improving mutual trusts between the CSP and cloud users. The experiments show that the method can effectively assess the security risk of cloud platforms and in the case where the number of clouds increased by 100% and 200%, the evaluation time using our methodology increased by only by 12% and 30%. Conclusion: Our method can achieve consistent decision based on conflicting roles, high scalability and practicability for cloud security risk evaluation.

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