scholarly journals Twin methodology in epigenetic studies

2015 ◽  
Vol 218 (1) ◽  
pp. 134-139 ◽  
Author(s):  
Q. Tan ◽  
L. Christiansen ◽  
J. von Bornemann Hjelmborg ◽  
K. Christensen
Keyword(s):  
Twin Methodology

scholarly journals The co-twin methodology and returns to schooling — testing a critical assumption

2014 ◽  
Vol 26 ◽  
pp. 1-10 ◽  
Author(s):  
Örjan Sandewall ◽  
David Cesarini ◽  
Magnus Johannesson
Keyword(s):  
Returns To Schooling ◽  
Twin Methodology

Twin Methodology

2006 ◽  
Author(s):  
Harold Snieder ◽  
Alex J MacGregor
Keyword(s):  
Twin Methodology

scholarly journals A Novel Inspection Technique for Electronic Components Using Thermography (NITECT)

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 5013
Author(s):  
Haochen Liu ◽  
Lawrence Tinsley ◽  
Wayne Lam ◽  
Sri Addepalli ◽  
Xiaochen Liu ◽  
...  
Keyword(s):  
Critical Systems ◽  
Electronic Components ◽  
Pulsed Thermography ◽  
Quantitative Classification ◽  
High Hazard ◽  
Classification Evaluation ◽  
Twin Methodology ◽  
Inspection Techniques ◽  
Simulation Unit ◽  
Different Sources

Unverified or counterfeited electronic components pose a big threat globally because they could lead to malfunction of safety-critical systems and reduced reliability of high-hazard assets. The current inspection techniques are either expensive or slow, which becomes the bottleneck of large volume inspection. As a complement of the existing inspection capabilities, a pulsed thermography-based screening technique is proposed in this paper using a digital twin methodology. A FEM-based simulation unit is initially developed to simulate the internal structure of electronic components with deviations of multiple physical properties, informed by X-ray data, along with its thermal behaviour under exposure to instantaneous heat. A dedicated physical inspection unit is then integrated to verify the simulation unit and further improve the simulation by taking account of various uncertainties caused by equipment and samples. Principle component analysis is used for feature extraction, and then a set of machine learning-based classifiers are employed for quantitative classification. Evaluation results of 17 chips from different sources successfully demonstrate the effectiveness of the proposed technique.

scholarly journals Validation of copula-based weather generator for maintenance model of offshore wind farm

2021 ◽  
Author(s):  
Bartosz Skobiej ◽  
Arto Niemi
Keyword(s):  
Wind Farm ◽  
Weather Conditions ◽  
Offshore Wind ◽  
Weather Data ◽  
Offshore Wind Farm ◽  
Usability Assessment ◽  
Maintenance Service ◽  
Infrastructure Maintenance ◽  
Twin Methodology ◽  
Maintenance Model

AbstractThis article discusses the aspect of modeling weather conditions in marine environment for implementation in the offshore wind farm domain. It is clear that harsh sea weather conditions influence many characteristics of any offshore installation. The accessibility to the infrastructure, maintenance procedures, failure ratios of components, energy provision levels, or utilization of vessels—are the examples of weather-related issues connected to the offshore wind industry. Regarding the growing popularity of digital twin methodology, authors present a novel view to generate weather data with copula-based method. The results obtained are compared to selected historical data and implemented into the maintenance model. The selected indicators of maintenance service are used for usability assessment of proposed copula-based method.

IMPLEMENTATION OF A DIGITAL TWIN USING THE EXAMPLE OF STATE MONITORING OF THE REJOINT EXOSKELETON TRAINER

2020 ◽  
Vol 52 (4) ◽  
pp. 112-118
Author(s):  
STANISLAV E. DRAGUNOV ◽  
◽  
SVETLANA S. POPOVA ◽  
ANNA VLADIMIROVNA MATOKHINA ◽  
MAXIM A. CHERNETSKY ◽  
...  
Keyword(s):  
Muscle Activity ◽  
The State ◽  
State Monitoring ◽  
Quality Maintenance ◽  
Digital Twin ◽  
Monitoring Process ◽  
Operation Control ◽  
Digital Copy ◽  
Digital Shadow ◽  
Twin Methodology

This article discusses the approbation of the digital twin methodology for condition monitoring and operation control within the framework of the lease, the Rejoint exoskeletal trainer used to restore muscle activity after injuries and strokes. To test the work, digital shadow technology is used, which makes it possible to obtain information about the state of the device in remote operation, which improves the quality. maintenance and increase the life of the device. The monitoring process includes the installation of additional sensors on the device, which allow collecting realtime data on the position of the nodes and the state of the device, transmitting data to the server for subsequent analysis. The obtained data allow carrying out, in addition to digital analytics, computer simulations, providing for analysis a digital copy of the actually operated device.

scholarly journals Twin methodology is not always easily understood

BMJ ◽  
1996 ◽  
Vol 313 (7055) ◽  
pp. 491-491 ◽  
Author(s):  
K. O. Kyvik
Keyword(s):  
Twin Methodology

Twin Methodology

2010 ◽  
Author(s):  
Harold Snieder ◽  
Xiaoling Wang ◽  
Alex J MacGregor
Keyword(s):  
Twin Methodology

scholarly journals Testing Twin Means and Estimating Genetic Variance. Basic Methodology for the Analysis of Quantitative Twin Data

1979 ◽  
Vol 28 (1) ◽  
pp. 35-40 ◽  
Author(s):  
Joe C. Christian
Keyword(s):  
Hypothesis Testing ◽  
Genetic Variance ◽  
Twin Data ◽  
Simple Task ◽  
Twin Model ◽  
Twin Methodology

Twin methodology for the analysis of continuously distributed traits is presented as a guideline for initial steps in the analysis of twin data. Tests for heterogeneity of twin means and variances are reviewed along with estimates of genetic variance.Analysis of twin data appears on the surface to be a rather simple task, but investigators may well be confused by the wealth of choices available for hypothesis testing. This paper is designed to help the less experienced investigator, with perhaps a modest amount of data, begin analysis with maximum attention to testing all testable assumptions of the twin model, and using recent examples of applications of the methods.

Sign in / Sign up

Export Citation Format

Share Document