Importance of Accurate and Detailed Data Processing of Laser Mapping in Coke Drum

2019 ◽  
Author(s):  
Daryl Rutt ◽  
Stephen Park ◽  
Darren Love ◽  
Egler Araque ◽  
Rick Clark
Keyword(s):  
Mapping Technique ◽  
Second Derivative ◽  
Detailed Data ◽  
Data Noise ◽  
Laser Range ◽  
Consistent Manner ◽  
Surface Profiles ◽  
Base Radius ◽  
Development And Evolution ◽  
Over Time

Abstract Laser mapping is a well-accepted technique for obtaining surface profiles of coke drum walls to identify bulges. The resulting data is used to track and trend vessel distortions and mapped to illustrate the shape of the vessel from a base radius and or previous inspection. Monitoring the development and evolution of these distortions over time in an accurate and consistent manner has been demonstrated to be an effective tool for predicting bulging induced crack in a coke drum. In this paper, the authors discuss several aspects of the laser mapping technique such as scanner positioning, data noise, laser range accuracy, missing data and the repercussions in the assessment of bulging. The effects on second derivative-based analysis are covered in detail and the use of techniques to reduce the effects of data noise and sensor motion are discussed.

scholarly journals Estimating the Necessary Amount of Driving Data for Assessing Driving Behavior

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2600 ◽  
Author(s):  
Anna-Maria Stavrakaki ◽  
Dimitrios I. Tselentis ◽  
Emmanouil Barmpounakis ◽  
Eleni I. Vlahogianni ◽  
George Yannis
Keyword(s):  
Discrete Time ◽  
Driving Behavior ◽  
Methodological Framework ◽  
Detailed Data ◽  
Specific Time ◽  
Speed Limits ◽  
Specific Time Point ◽  
Smartphone Sensors ◽  
Over Time ◽  
Time Point

The aim of this paper was to provide a methodological framework for estimating the amount of driving data that should be collected for each driver in order to acquire a clear picture regarding their driving behavior. We examined whether there is a specific discrete time point for each driver, in the form of total driving duration and/or the number of trips, beyond which the characteristics of driving behavior are stabilized over time. Various mathematical and statistical methods were employed to process the data collected and determine the time point at which behavior converges. Detailed data collected from smartphone sensors are used to test the proposed methodology. The driving metrics used in the analysis are the number of harsh acceleration and braking events, the duration of mobile usage while driving and the percentage of time driving over the speed limits. Convergence was tested in terms of both the magnitude and volatility of each metric for different trips and analysis is performed for several trip durations. Results indicated that there is no specific time point or number of trips after which driving behavior stabilizes for all drivers and/or all metrics examined. The driving behavior stabilization is mostly affected by the duration of the trips examined and the aggressiveness of the driver.

scholarly journals Disappearance of a Cerebral Arteriovenous Malformation after Partial Endovascular Embolisation

2001 ◽  
Vol 7 (1) ◽  
pp. 41-46
Author(s):  
S. Mangiafico ◽  
M. Cellerini ◽  
G. Villa ◽  
M. Nistri ◽  
F. Ammannati ◽  
...  
Keyword(s):  
Arteriovenous Malformation ◽  
Cerebral Arteriovenous Malformation ◽  
Endovascular Embolisation ◽  
Martin Grade ◽  
Grade 3 ◽  
Development And Evolution ◽  
Over Time

The authors report the observation of a patient with a Spetzler-Martin grade 3, symptomatic, sulcal cerebral arteriovenous malformation (cAVM) of the left precuneus that after partial, uncomplicated, endovascular embolisation disappeared at 4, 6 and 12 months follow-up. Discussion focuses on the angioarchitectural remodelling of the cAVM over time according to the latest concepts on AVM development and evolution.

Two Geometrical Models for Pixelism

Metaphysica ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 99-113
Author(s):  
Fabio Patrone
Keyword(s):  
Possible Worlds ◽  
Dimensional Space ◽  
Counterpart Theory ◽  
Mereological Nihilism ◽  
Spatial Dimensions ◽  
Consistent Manner ◽  
Over Time ◽  
Radical Form

AbstractPixelism is the combination of three metaphysical thesis, namely a radical form of exdurantism, mereological nihilism and counterpart theory. Pixelism is a theory that evaluates all the metaphysical phenomena of persistence, composition and modality in a homogeneous and consistent manner. In a pixel world, there is no identity over time and over possible worlds and nothing persists over more than an instant or a world. Entities can be univocally identified by a five-coordinates system (the three spatial dimensions, the temporal one and the possible worlds), and their relation is a counterpart relation both in different worlds and at different times or different regions of space. In this paper I will provide two models for pixelism: the first one takes pixels to be hypercubes, i. e. four-dimensional cubes, the acceptance of which is conditional on the acceptance of extended simples. The second one considers pixels as points in a four-dimensional space.

scholarly journals Snoring and the Internet: A Cartographic Exploration of Medicalisation

2021 ◽  
Author(s):  
◽  
Christopher Sparks
Keyword(s):  
Search Engine ◽  
Web Sites ◽  
Mapping Technique ◽  
The Internet ◽  
Digital Era ◽  
Transport Regulation ◽  
Micro Level ◽  
Internet Searches ◽  
Multiple Levels ◽  
Over Time

<p>The medicalisation of snoring has led to new industries of diagnosis, treatment, and transport regulation. Bryn Sparks’s research develops a novel mapping technique to model internet-searches about snoring to help investigate medicalisation in the digital era. Bryn’s research explores the medicalisation of snoring across multiple levels: at the micro-level of individuals in whom the internet-search influences conceptions of snoring; at the meso-level of web-sites wherein competition for attention interacts through search-engine feed-back to amplify medicalisation; and at the macro-level of the internet in terms of how the shifting conception of snoring over time reflects a dynamic pattern of medicalisation.</p>

Caregiving After Stroke: A Preliminary Study in Search of a Grounded Theory

2021 ◽  
Vol 75 (Supplement_2) ◽  
pp. 7512505143p1-7512505143p1
Author(s):  
Angela Salvadia ◽  
Deanna Bertone ◽  
Shaylyn Fisher ◽  
Kaitlyn Fisher ◽  
Emily Nelson ◽  
...  
Keyword(s):  
Health Care ◽  
Caregiver Burden ◽  
Subjective Experience ◽  
Primary Caregivers ◽  
Detailed Data ◽  
Support Mechanisms ◽  
Preliminary Study ◽  
Additional Support ◽  
Primary Author ◽  
Over Time

Abstract Date Presented Accepted for AOTA INSPIRE 2021 but unable to be presented due to online event limitations. This study investigated the experience of primary caregivers of stroke survivors, while acknowledging limited theories that inform caregiving over time. Interviews and detailed data analysis yielded preliminary theoretical constructs that address disruption in occupations, caregiver burden, coping, and the subjective experience of navigating the health care system. Additional support mechanisms within current OT practice could prevent caregiver burden and occupational loss. Primary Author and Speaker: Angela Salvadia Additional Authors and Speakers: Deanna Bertone, Shaylyn Fisher, Kaitlyn Fisher, and Emily Nelson Contributing Authors: Tamera Keiter Humbert

scholarly journals Snoring and the Internet: A Cartographic Exploration of Medicalisation

2021 ◽  
Author(s):  
◽  
Christopher Sparks
Keyword(s):  
Search Engine ◽  
Web Sites ◽  
Mapping Technique ◽  
The Internet ◽  
Digital Era ◽  
Transport Regulation ◽  
Micro Level ◽  
Internet Searches ◽  
Multiple Levels ◽  
Over Time

<p>The medicalisation of snoring has led to new industries of diagnosis, treatment, and transport regulation. Bryn Sparks’s research develops a novel mapping technique to model internet-searches about snoring to help investigate medicalisation in the digital era. Bryn’s research explores the medicalisation of snoring across multiple levels: at the micro-level of individuals in whom the internet-search influences conceptions of snoring; at the meso-level of web-sites wherein competition for attention interacts through search-engine feed-back to amplify medicalisation; and at the macro-level of the internet in terms of how the shifting conception of snoring over time reflects a dynamic pattern of medicalisation.</p>

Human Biobanking in Developed and Developing Countries: An Ethico-Legal Comparative Analysis of the Frameworks in the United Kingdom, Australia, Uganda, and South Africa

2020 ◽  
Vol 30 (1) ◽  
pp. 146-160
Author(s):  
SAFIA MAHOMED
Keyword(s):  
South Africa ◽  
Developing Countries ◽  
United Kingdom ◽  
Comparative Analysis ◽  
The United Kingdom ◽  
Biobank Research ◽  
International Collaborations ◽  
Consistent Manner ◽  
Legal Frameworks ◽  
Over Time

AbstractAlthough the concept of biobanking is not new, the open and evolving nature of biobanks has created profound ethical, legal, and social implications, including issues around informed consent, community engagement, secondary uses of materials over time, ownership of materials, data sharing, and privacy. Complexities also emerge because of increasing international collaborations and differing national positions. In addition, the degrees and topics of concern vary as legislative, ethical, and social frameworks differ across developed and developing countries. Implementing national laws in an internationally consistent manner is also problematic. However, these concerns should not cause countries, especially developing countries, to lag behind as this novel wave of research gains momentum, particularly while several biobank initiatives are already underway in the developing world. As the law has always struggled to keep up with the fast-evolving scientific arena, this article seeks to identify the ethico-legal frameworks in place in the United Kingdom, Australia, Uganda, and South Africa, for human biobank research, in an attempt to compare and contextualize the approaches to human biobanking in specific developed and developing countries.

What's in a Grade? School Report Cards and the Housing Market

2004 ◽  
Vol 94 (3) ◽  
pp. 591-604 ◽  
Author(s):  
David N Figlio ◽  
Maurice E Lucas
Keyword(s):  
Housing Market ◽  
Test Scores ◽  
House Prices ◽  
The Other ◽  
Report Cards ◽  
Independent Effect ◽  
Detailed Data ◽  
School Grades ◽  
Residential Properties ◽  
Over Time

This paper investigates whether the housing market responds to the information incorporated in state-administered school grades. We study whether school grades affect families' residential locations and house prices. Using detailed data on repeated sales of individual residential properties in the state of Florida, we find evidence that there is an independent effect of these grades on house prices and residential location, above and beyond the estimated effects of test scores and the other components of the school grades. Because these grades have a large stochastic component, however, we find that over time the estimated effects of the grades has diminished.

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