scholarly journals Vibration-based damage detection in structures using time series analysis

2006 ◽  
Vol 220 (3) ◽  
pp. 261-272 ◽  
Author(s):  
I Trendafilova
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
State Space ◽  
The State ◽  
Statistical Characteristics ◽  
Space Representation ◽  
Test Case ◽  
State Space Representation ◽  
Series Analysis ◽  
Concrete Plate

The paper considers some possibilities to use pure time series analysis for damage diagnosis in vibrating structures. It introduces the basics of the state space methodology and discusses a number of possible methods to extract damage sensitive features from the state space representation of the attractor of a vibrating system. The discussed methods can be divided into two groups: methods that use non-linear dynamics characteristics and methods based on the statistical characteristics of the distribution of points on the attractor. Each possible damage feature is introduced separately and the advantages and shortfalls of its application are discussed. The application of the suggested techniques is demonstrated on a test case of a reinforced concrete plate.

Statistical Time Series Analysis of Crack Movements at Bayon Main Tower, Cambodia

2010 ◽  
Vol 133-134 ◽  
pp. 397-402 ◽  
Author(s):  
Shunsuke Yamada ◽  
Masato Araya ◽  
Mitsuharu Fukuda ◽  
Yoshinori Iwasaki
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
State Space ◽  
Weather Conditions ◽  
Space Representation ◽  
State Space Representation ◽  
The Past ◽  
Series Analysis ◽  
Crack Movement ◽  
Statistical Time

Based on the past monitoring data of crack movements and various weather conditions by JASA (Japanese Government Team of Safeguarding Angkor), we quantitatively examine about the effects of each weather conditions to each crack movements at Bayon main tower. Then, we applied the time series analysis using a state-space representation in the examination. In the model of the state-space representation, the factors of crack movement are assumed as temperature, wind velocity and rainfall. Those quantitative examinations of crack movements will be necessary for the planning of reinforcement and restoration at Bayon main tower.

scholarly journals The Promise of the State Space Approach to Time Series Analysis for Nursing Research

2012 ◽  
Vol 61 (6) ◽  
pp. 388-394 ◽  
Author(s):  
Janet A. Levy ◽  
Heather E. Elser ◽  
Robin B. Knobel
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
State Space ◽  
The State ◽  
Nursing Research ◽  
State Space Approach ◽  
Series Analysis ◽  
Space Approach

scholarly journals Vitamin D, SARS-CoV-2 and Causal Associations in Transversal Studies: The Time-Series Analysis to Reveal Potential Confounders. Comment on Gaudio et al. Vitamin D Levels Are Reduced at the Time of Hospital Admission in Sicilian SARS-CoV-2-Positive Patients. Int. J. Environ. Res. Public Health 2021, 18, 3491

2021 ◽  
Vol 18 (13) ◽  
pp. 6793
Author(s):  
Cristiano Ialongo ◽  
Antonella Farina ◽  
Raffaella Labriola ◽  
Antonio Angeloni ◽  
Emanuela Anastasi
Keyword(s):  
Public Health ◽  
Vitamin D ◽  
Time Series ◽  
Severe Acute Respiratory Syndrome ◽  
Time Series Analysis ◽  
Hospital Admission ◽  
The State ◽  
Series Analysis ◽  
Vitamin D Levels ◽  
Time Of Admission

We read with great interest the paper by Gaudio and colleagues on vitamin D and on the state of patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) at the time of admission [...]

scholarly journals SEWAGE DISPOSAL SITUATION AT DIGHA COAST: A TIME SERIES ANALYSIS

2021 ◽  
Vol 16 (11) ◽  
Author(s):  
Sumouli Roy
Keyword(s):  
Time Series ◽  
Time Series Analysis ◽  
Coastal Area ◽  
West Bengal ◽  
Indian Subcontinent ◽  
Coastal Region ◽  
The State ◽  
Sewage Disposal ◽  
Northeastern Part ◽  
Series Analysis

West Bengal is a maritime state in the northeastern part of the Indian subcontinent with a coastal area of 10,158.22 sq. km. The coastal region consists of the Digha coast, which is noted for its tourism and fish landing activities. We highlight in this paper, a load of nitrate and phosphate during premonsoon in the aquatic phase of Digha for more than three decades (1984 – 2020) to observe the trend of these two variables, which are important components of sewage. A uniform increase in the concentrations of the nutrients is observed except in the years 2009 and 2020. A sudden peak observed for both the nutrients during 2009 may be attributed to Aila, a super cyclone that hit coastal West Bengal on 25th May 2009. The dip in the levels of nutrients during 2020, may be the effect of the COVID lockdown phase in the state during which all the tourism and fish landing activities were completely paralyzed.

Sign in / Sign up

Export Citation Format

Share Document