Application of seismological model for estimating seismic risk of spatially distributed structures

2014 ◽  
pp. 4205-4212
Author(s):  
T Liu ◽  
H Hong
Keyword(s):  
Seismic Risk ◽  
Spatially Distributed ◽  
Distributed Structures ◽  
Seismological Model

scholarly journals SUBJECTIVE UNDERSTANDING OF THE STUDENT WHEN USING OPEN EDUCATIONAL RESOURCES

2019 ◽  
Vol 16 (33) ◽  
pp. 613-629
Author(s):  
B. BAZYLOVA ◽  
Z. ZHUSUPOVA ◽  
G. KAZHIGALIEVA ◽  
A. ONALBAYEVA ◽  
V. KALININA
Keyword(s):  
Learning Process ◽  
Open Educational Resources ◽  
Educational Resources ◽  
Practical Significance ◽  
Applied Chemistry ◽  
Technological Basis ◽  
Wide Range ◽  
Spatially Distributed ◽  
Distributed Structures ◽  
The University

The relevance of the study is determined by the fact that open educational resources carry the ability to overcome the basic methodological construct complicating the learning process among students and namely the use of international experience while learning and obtaining knowledge. This study shows the aspects of functioning open educational resources and their technological basis. The novelty of the work was the formation of a model for the use of open educational resources in training of specialized courses of the Department of applied chemistry. The authors showed that the effectiveness of open educational resources use depends directly on the share of online learning and technological isolation of subjects. In particular, not only learning processes in the implementation of the program in applied chemistry, but also other disciplines that require the exchange of experience between countries and the use of a wide range of technological equipment and online structure are considered. In particular, training on the example of databases, information networks, and other spatially distributed structures are considered too. The practical significance of the study is defined by the fact that the use of open educational resources will not only intensify the learning process at the university, but also to determine the possibility of integration into the world educational space.

Multihazard Scenarios for Regional Seismic Risk Assessment of Spatially Distributed Infrastructure

2021 ◽  
Vol 27 (1) ◽  
pp. 04021001
Author(s):  
Nafiseh Soleimani ◽  
Rachel A. Davidson ◽  
Craig Davis ◽  
Thomas D. O’Rourke ◽  
Linda K. Nozick
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Seismic Risk Assessment ◽  
Spatially Distributed ◽  
Distributed Infrastructure

Influence of intensity measure selection on simulation-based regional seismic risk assessment

2020 ◽  
Vol 36 (2) ◽  
pp. 647-672 ◽  
Author(s):  
Ao Du ◽  
Jamie E Padgett ◽  
Abdollah Shafieezadeh
Keyword(s):  
Risk Assessment ◽  
Seismic Risk ◽  
Simulation Method ◽  
Intensity Measure ◽  
Seismic Risk Assessment ◽  
Demand Modeling ◽  
Risk Estimates ◽  
Demand Models ◽  
Simulation Based ◽  
Spatially Distributed

This study investigates the influence of intensity measure (IM) selection on simulation-based regional seismic risk assessment (RSRA) of spatially distributed structural portfolios. First, a co-simulation method for general spectral averaging vector IMs is derived. Then a portfolio-level surrogate demand modeling approach, which incorporates the seismic demand estimation of the non-collapse and collapse states, is proposed. The derived IM co-simulation method enables the first comparative study of different IMs, including the conventional IMs and some more advanced scalar and vector IMs, in the context of RSRA. The influence of IM selection on the predictive performance of the portfolio-level surrogate demand models, as well as on the regional seismic risk estimates, is explored based on a virtual spatially distributed structural portfolio subjected to a scenario earthquake. The results of this study provide pertinent insights in surrogate demand modeling, IM co-simulation and selection, which can facilitate more accurate and reliable regional seismic risk estimates.

METHODOLOGICAL DESCRIPTION OF THE PROBLEM OF STABILIZATION OF THE ADAPTIVE CONTROL SYSTEM MOBILE STRUCTURES OF A GROUND-BASED ROBOTIC COMPLEX IN DISTURBED ENVIRONMENTS

2019 ◽  
Vol 1 (12) ◽  
pp. 5-18
Author(s):  
V. Chepkyi ◽  
V. Skachkov ◽  
O. Yefymchykov ◽  
V. Nabok ◽  
O. Sergeev ◽  
...  
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
Functional Organization ◽  
Operating Time ◽  
Dynamic Parameters ◽  
Adaptive Control System ◽  
Intellectual Activity ◽  
Spatially Distributed ◽  
Distributed Structures ◽  
Disturbed Environment

In the article, the authors conduct research on the problem of stabilization of dynamic parameters of an adaptive information-control system of a ground-based robotic complex in disturbed environment. The research concept is based on the latest trends in the development of third-generation robotics objects; on the definition of the robotic complex, as an autonomous substrate means of reproducing physical functions and automating the intellectual activity of a person in the process of active interaction of the component structures of the robotic complex with the environment; on the technology of integrating the ground-based robotic complex into the system of the highest level of hierarchy, in particular, in the system of providing or performing special tasks in the interests of the Armed Forces of Ukraine. The methodological preamble of the stated problems is being updated, the description of which occurs in relation to the model of substrate modification of the spatially distributed structure of the ground-based robotic complex. The purpose of the study is related to the application of methodological description to the problem of stabilization of the dynamic parameters of the adaptive control system of the mobile substrate structure of a ground-based robotics complex in a disturbed environment. Consequences of the presented description were announced, according to which stability is given priority as an integral-substrate property, which combines various types of stability of mobile spatially distributed structures of the ground robotic complex in time, and also characterizes their general structural and functional organization throughout operating time. The existence of the potential stability of the substrate structures of the ground-based robotic complex in cases of their resistance to the negative influence of external disturbances in time is confirmed. The absence of an inverse relationship was noted, that is, the component structures of the ground-based robotic complex that are resistant to external factors will not necessarily be stable. The target result was obtained in the context of the general scientific paradigm and can serve as an application for the concept of ensuring the effective functioning of mobile spatially distributed structures of the ground-based robotic complex in the integrated project "object-system".

Estimation of Seismic Loss for Spatially Distributed Buildings

2008 ◽  
Vol 24 (4) ◽  
pp. 889-910 ◽  
Author(s):  
Katsuichiro Goda ◽  
H. P. Hong
Keyword(s):  
Spatial Correlation ◽  
Seismic Risk ◽  
Partial Correlation ◽  
Soil Conditions ◽  
Seismic Demand ◽  
Earthquake Catalog ◽  
Seismic Excitations ◽  
Seismic Loss ◽  
Local Soil ◽  
Spatially Distributed

A simulation-based framework for assessing seismic risk of spatially distributed buildings is developed by taking the spatial correlation of seismic excitations into account. For each of seismic events compiled in a synthetic earthquake catalog, inelastic seismic demand on buildings that are approximated by bilinear single-degree-of-freedom systems is compared with uncertain structural capacity to evaluate seismic damage severity. The proposed framework is employed to investigate the sensitivity of the estimated seismic risk of sets of buildings to the degree of spatially correlated and simultaneously occurring seismic excitations. In particular, four correlation levels—no correlation, full correlation, and partial correlation with/without intra-event components—are considered. The assignment of the partial correlation is based on a recently developed spatial correlation model, and the sets of hypothetical buildings mimic existing building stocks in downtown Vancouver. The analysis results highlight that underestimation or overestimation of correlation of seismic demand could lead to very different probabilistic characteristics of aggregate seismic loss although its mean is unaltered. The sensitivity analysis results suggest that uncertainty in structural capacities as well as average local soil conditions is of relative importance.

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