Signal selection and analysis methodology of long-term vibration data from the I-35W St. Anthony Falls Bridge

2018 ◽  
Vol 25 (7) ◽  
pp. e2182 ◽  
Author(s):  
Karl O. Gaebler ◽  
Brock D. Hedegaard ◽  
Carol K. Shield ◽  
Lauren E. Linderman
Author(s):  
Feng Wang ◽  
Roger Burke ◽  
Anil Sablok ◽  
Kristoffer H. Aronsen ◽  
Oddgeir Dalane

Strength performance of a steel catenary riser tied back to a Spar is presented based on long term and short term analysis methodologies. The focus of the study is on response in the riser touch down zone, which is found to be the critical region based on short term analysis results. Short term riser response in design storms is computed based on multiple realizations of computed vessel motions with various return periods. Long term riser response is based on vessel motions for a set of 45,000 sea states, each lasting three hours. The metocean criteria for each sea state is computed based on fifty six years of hindcast wind and wave data. A randomly selected current profile is used in the long term riser analysis for each sea state. Weibull fitting is used to compute the extreme riser response from the response of the 45,000 sea states. Long term analysis results in the touch down zone, including maximum bending moment, minimum effective tension, and maximum utilization using DNV-OS-F201, are compared against those from the short term analysis. The comparison indicates that the short term analysis methodology normally followed in riser design is conservative compared to the more accurate, but computationally more expensive, long term analysis methods. The study also investigates the important role that current plays in the strength performance of the riser in the touch down zone.


2021 ◽  
Vol 2 (4) ◽  
pp. 398-411
Author(s):  
Jinho Song

Scientific issues that draw international attention from the public and experts during the last 10 years after the Fukushima accident are discussed. An assessment of current severe accident analysis methodology, impact on the views of nuclear reactor safety, dispute on the safety of fishery products, discharge of radioactive water to the ocean, status of decommissioning, and needs for long-term monitoring of the environment are discussed.


2000 ◽  
Author(s):  
Colin P. Ratcliffe ◽  
John W. Gillespie, Jr. ◽  
Dirk Heider ◽  
Douglas A. Eckel II ◽  
Roger M. Crane

2018 ◽  
Author(s):  
Ferenc Honbolygó ◽  
Andrea Kóbor ◽  
Borbála German ◽  
Valéria Csépe

AbstractUnderstanding speech at the basic levels entails the simultaneous and independent processing of phonemic and prosodic features. While it is well-established that phoneme perception relies on language-specific long-term traces, it is unclear if the processing of prosodic features similarly involves language-specific representations. In the present study, we investigated the processing of a specific prosodic feature, word stress, using the method of event-related brain potentials (ERPs) employing a cross-linguistic approach. Hungarian participants heard disyllabic pseudowords stressed either on the first (legal stress) or on the second (illegal stress) syllable, pronounced either by a Hungarian or a German speaker. Results obtained using a data-driven ERP analysis methodology showed that all pseudowords in the deviant position elicited an Early Differentiating Negativity (EDN) and a Mismatch Negativity (MMN) component, except for the Hungarian pseudowords stressed on the first syllable. This suggests that Hungarian listeners did not process the native legal stress pattern as deviant, but the same stress pattern with a non-native accent was processed as deviant. This implies that the processing of word stress was based on language-specific long-term memory traces.


2020 ◽  
Vol 76 (4) ◽  
Author(s):  
Christina Landman ◽  
Tanya Pieterse

This article presents the findings of research conducted on ‘forgiveness’ as a spiritual construct, religious survival strategy and meaning-giving tool during incarceration. The research was conducted with 30 men serving long-term sentences in Zonderwater, a correctional centre outside Pretoria, South Africa. A review of literature showed that forgiveness has mainly been seen as something the perpetrator owed the victim and that asking for and granting forgiveness were religious imperatives. However, this study shows that offenders, in the troubled space of incarceration, survived by putting themselves in control of forgiveness. They found peace of mind by granting forgiveness to those who caused them to be incarcerated, whilst at the same time taking responsibility for their own actions. Semi-structured interviews were conducted with the participants. Applying an interpretative phenomenological analysis methodology, the collected data were analysed and the following themes were identified: (1) forgiving those who transgressed against me; (2) the role of politics in forgiveness; (3) God’s role in forgiveness; and (4) the effects of forgiveness on the self.Contribution: This article contributes to an understanding of the construction of forgiveness as experienced by offenders, independent from the traditional victim-offender relations. Living in a troubled, unforgiving space, these men are expected to practice forgiveness by set standards. From their shared narratives, it is illustrated that their spiritual navigation with this phenomenon is not a chronological, time dependent process, but a multi-dimensional, personal journey to self-discovery.


2011 ◽  
Vol 6 (2) ◽  
pp. 38-52 ◽  
Author(s):  
Esther Conway ◽  
David Giaretta ◽  
Simon Lambert ◽  
Brian Matthews

The challenge of digital preservation of scientific data lies in the need to preserve not only the dataset itself but also the ability it has to deliver knowledge to a future user community. A true scientific research asset allows future users to reanalyze the data within new contexts. Thus, in order to carry out meaningful preservation we need to ensure that future users are equipped with the necessary information to re-use the data. This paper presents an overview of a preservation analysis methodology which was developed in response to that need on the CASPAR and Digital Curation Centre SCARP projects. We intend to place it in relation to other digital preservation practices, discussing how they can interact to provide archives caring for scientific data sets with the full arsenal of tools and techniques necessary to rise to this challenge.


2021 ◽  
Vol 13 (24) ◽  
pp. 13586
Author(s):  
Abdon Dantas ◽  
David Banh ◽  
Philip Heywood ◽  
Miguel Amado

By the end of 2020, more than 80 million people were forcibly displaced around the world; this represents about one percent of the global population. Many of the displaced found shelter in emergency settlements; whether in refugee camps, IDP camps or community settlements. Some of these settlements are transitory, while others have been consolidated into permanent habitats; some span the size of a city, while others are the size of a village; some are well structured, while others provide only the bare minimum needed by residents. Notwithstanding these variations, there is still a lack of understanding of the range, depth, scale, and scope of these settlements. There is also a need for comparative analysis between different types of emergency settlements, as they are still generalized as temporary encampments. The aim of the study is to identify the distinctiveness of each type of emergency settlement to demonstrate that one strategy for their planning and management will not fit all. It does so by reviewing the criteria for analyzing emergency settlements around the world by using a quantitative analysis methodology on a set of variables considered relevant for the characterization of each typology based on a set of 500 cases. The results indicate that each type of emergency settlement has different characteristics and topology, and identify which variables, being identical, influence each typology differently. The article also discusses the basis for better-informed decision-making about the medium and long-term policies applicable to individual settlements.


2013 ◽  
Vol 347-350 ◽  
pp. 803-807
Author(s):  
Xin Luan ◽  
Bing Xue ◽  
Feng Mei Sun ◽  
Qi Zhi Yan ◽  
Da Lei Song

Turbulence played an important role in the evolution of the seawater energy and exchange. Multi-scale, long-term, fixed-point and continuous sampling is a new research direction in the turbulence observation. This dissertation designed high-capacity and no-vibration data storage solutions aiming at long-term, continuous turbulence observations. First a multi-scale submerged buoy observing platform is designed. Base on the turbulence observing platform, a multi-parameter data acquisition and no vibrations storage system is designed. This paper describes the hardware and software design implementation of large-capacity data storage arrays in details as well as the readability and easy operation of the transplant of FatFS. Actual test and sea trial prove the design can be achieved large-capacity data access of long-term observation of ocean turbulence base on the submerged buoy.


2017 ◽  
Vol 13 ◽  
pp. 96-102
Author(s):  
Adrian Ignasiak ◽  
Norbert Gomolla ◽  
Piotr Kruczek ◽  
Agnieszka Wyłomanska ◽  
Radosław Zimroz

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