Determination of the Reference Point of a Fingerprint Based on Multiple Levels of Representation

An integrated multiscale modeling framework that incorporates a simulation-based upscaling technique is developed and implemented for the material characterization of additively manufactured cellular structures in this paper. The proposed upscaling procedure enables the determination of homogenized parameters at multiple levels by matching the probabilistic performances between fine and coarse scale models. Polynomial chaos expansion is employed in upscaling procedure to handle the computational burden caused by the input uncertainties. Efficient uncertainty quantification is achieved at the mesocale level by utilizing the developed upscaling technique. The homogenized parameters of mesostructures are utilized again at the macroscale level in the upscaling procedure to accurately obtain the overall material properties of the target cellular structure. Actual experimental results of additively manufactured parts are integrated into the developed procedure to demonstrate the efficacy of the method.

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A Multilevel Upscaling Method for Material Characterization of Additively Manufactured Part Under Uncertainties

Journal of Mechanical Design ◽

10.1115/1.4031012 ◽

2015 ◽

Vol 137 (11) ◽

Cited By ~ 16

Author(s):

Recep M. Gorguluarslan ◽

Sang-In Park ◽

David W. Rosen ◽

Seung-Kyum Choi

Keyword(s):

Material Characterization ◽

Modeling Framework ◽

Upscaling Technique ◽

Simulation Based ◽

Scale Models ◽

Multiple Levels ◽

Multiscale Modeling Framework ◽

Input Uncertainties

An integrated multiscale modeling framework that incorporates a simulation-based upscaling technique is developed and implemented for the material characterization of additively manufactured cellular structures in this paper. The proposed upscaling procedure enables the determination of homogenized parameters at multiple levels by matching the probabilistic performance between fine and coarse scale models. Polynomial chaos expansion (PCE) is employed in the upscaling procedure to handle the computational burden caused by the input uncertainties. Efficient uncertainty quantification is achieved at the mesoscale level by utilizing the developed upscaling technique. The homogenized parameters of mesostructures are utilized again at the macroscale level in the upscaling procedure to accurately obtain the overall material properties of the target cellular structure. Actual experimental results of additively manufactured parts are integrated into the developed procedure to demonstrate the efficacy of the method.

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Determination of Elastic Modulus in Mouse Bones Using a Nondestructive Micro-Indentation Technique Using Reference Point Indentation

Journal of Biomechanical Engineering ◽

10.1115/1.4039982 ◽

2018 ◽

Vol 140 (7) ◽

Author(s):

Ganesh Thiagarajan ◽

Mark T. Begonia ◽

Mark Dallas ◽

Nuria Lara-Castillo ◽

JoAnna M. Scott ◽

...

Keyword(s):

Elastic Modulus ◽

Reference Point ◽

Ex Vivo ◽

Numerical Procedure ◽

Indentation Modulus ◽

Three Point Bending ◽

Bending Modulus ◽

Reference Point Indentation

The determination of the elastic modulus of bone is important in studying the response of bone to loading and is determined using a destructive three-point bending method. Reference point indentation (RPI), with one cycle of indentation, offers a nondestructive alternative to determine the elastic modulus. While the elastic modulus could be determined using a nondestructive procedure for ex vivo experiments, for in vivo testing, the three-point bending technique may not be practical and hence RPI is viewed as a potential alternative and explored in this study. Using the RPI measurements, total indentation distance (TID), creep indentation distance, indentation force, and the unloading slope, we have developed a numerical analysis procedure using the Oliver–Pharr (O/P) method to estimate the indentation elastic modulus. Two methods were used to determine the area function: (1) Oliver–Pharr (O/P—based on a numerical procedure) and (2) geometric (based on the calculation of the projected area of indentation). The indentation moduli of polymethyl methacrylate (PMMA) calculated by the O/P (3.49–3.68 GPa) and geometric (3.33–3.49 GPa) methods were similar to values in literature (3.5–4 GPa). In a study using femurs from C57Bl/6 mice of different ages and genders, the three-point bending modulus was lower than the indentation modulus. In femurs from 4 to 5 months old TOPGAL mice, we found that the indentation modulus from the geometric (5.61 ± 1.25 GPa) and O/P (5.53 ± 1.27 GPa) methods was higher than the three-point bending modulus (5.28 ± 0.34 GPa). In females, the indentation modulus from the geometric (7.45 ± 0.86 GPa) and O/P (7.46 ± 0.92 GPa) methods was also higher than the three-point bending modulus (7.33 ± 1.13 GPa). We can conclude from this study that the RPI determined values are relatively close to three-point bending values.

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Gravity networks for the Geodetic Reference Framework of Albania

10.5194/egusphere-egu2020-11518 ◽

2020 ◽

Author(s):

Hamza Reci ◽

Alexandros Stampolidis ◽

Perparim Ndoj ◽

Gregory Tsokas ◽

Roman Pašteka ◽

...

Keyword(s):

Reference Point ◽

Third Order ◽

Geospatial Information ◽

Dense Area ◽

First Order ◽

Reference Framework ◽

Gravimetric Measurements ◽

Final Data ◽

Vertical Gradients

<p>This paper presents a general overview of gravimetric measurements carried out for the first order gravimetric network of Albania.&#160;&#160; Data compensation, correction methodologies, interpretation and related results have been presented as well. Relative gravimetric measurements were carried out in 42points, &#160;with two CG-5 instruments. Real Vertical Gradients have been measured at all the points of first order network which together with other corrections,&#160; are used in the final data compensation in order to bring the final values at reference point as absolute ones. Apart from the first order network, other 38 second order and 138 third order gravimetric points have been measured in a grid 2x2 km, in the &#160;flat and most dense area (Tirana-Durresi) of Albania,&#160; with the &#160;scope the determination of&#160; Geoid Gravimetric Height on that region. The gravimetric measurements were realized with two Scintrex CG-5 gravimeters for three orders. For the first order points were used two gravimeters simultaneously, whereas for the points of second and third order only one. In this paper we present the results for only the first order measurements. The measurements were carried out during the period from August to October 2018, in collaboration with Aristotle University of Thessaloniki, Department of Geophysics. The project was supported by the Agency of Geospatial Information of Albania.</p>

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Offender Risk and Needs Assessment: Some Current Issues and Suggestions

Behaviour Change ◽

10.1375/bech.18.1.18 ◽

2001 ◽

Vol 18 (1) ◽

pp. 18-27 ◽

Cited By ~ 6

Author(s):

Mitchell K. Byrne ◽

Stuart Byrne ◽

Katherine Hillman ◽

Emma Stanley

Keyword(s):

Risk Assessment ◽

Functional Analysis ◽

Needs Assessment ◽

Forensic Psychology ◽

Financial Resources ◽

Accurate Identification ◽

The Public ◽

Multiple Levels ◽

Functional Analyses

AbstractCrime impacts upon the community at multiple levels, causing distress and loss for the victims, and feelings of insecurity for the public, as well as adding to the drain on financial resources for governments. This makes the accurate identification of risk of reoffending and the determination of efficacious rehabilitation strategies imperative. Key principles in cognitive and behavioural psychology can contribute to this task. This paper will review the issue of risk assessment and describe the applicability of functional analysis to forensic psychology. Two studies by the authors will be used to illustrate concepts raised in this review. The paper will conclude with a model that may help guide the realistic implementation of detailed individual functional analyses of offenders' behaviour.

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An accurate fingerprint reference point determination method based on curvature estimation of separated ridges

International Journal of Applied Mathematics and Computer Science ◽

10.2478/amcs-2018-0016 ◽

2018 ◽

Vol 28 (1) ◽

pp. 209-225 ◽

Cited By ~ 5

Author(s):

Rafal Doroz ◽

Krzysztof Wrobel ◽

Piotr Porwik

Keyword(s):

Reference Point ◽

Reference Points ◽

Second Step ◽

Multi Stage ◽

Stage System ◽

Series Of Experiments ◽

Curvature Estimation ◽

Point Determination ◽

Point Detection

AbstractThis paper presents an effective method for the detection of a fingerprint’s reference point by analyzing fingerprint ridges’ curvatures. The proposed approach is a multi-stage system. The first step extracts the fingerprint ridges from an image and transforms them into chains of discrete points. In the second step, the obtained chains of points are processed by a dedicated algorithm to detect corners and other points of highest curvature on their planar surface. In a series of experiments we demonstrate that the proposed method based on this algorithm allows effective determination of fingerprint reference points. Furthermore, the proposed method is relatively simple and achieves better results when compared with the approaches known from the literature. The reference point detection experiments were conducted using publicly available fingerprint databases FVC2000, FVC2002, FVC2004 and NIST

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Метод рециркуляции сигналов в задаче наблюдения точечного объекта над металлической поверхностью

Журнал технической физики ◽

10.21883/jtf.2019.08.47901.272-18 ◽

2019 ◽

Vol 89 (8) ◽

pp. 1259

Author(s):

В.В. Чапурский ◽

В.И. Калинин ◽

А.С. Бугаев ◽

В.В. Разевиг

Keyword(s):

Antenna Array ◽

Reference Point ◽

Ultra Wideband ◽

Mirror Reflection ◽

Spectral Form ◽

Correlation Integral ◽

Point Object ◽

Reflecting Surface ◽

Generalized Correlation

In the problem of localizing the position of a point object over a metal reflecting surface, the application of an ultra-wideband signal in the centimeter wavelength range is analyzed using the method of signal recirculation in the loops of spatial recirculation of «emitter – target receiving element of antenna array emitter." The determination of the object coordinate over the metal surface is based on the calculation of the generalized correlation integral in spectral form for the frequency coefficients of the recirculation loops over all receiving elements, taking into account the coordinates of the true object, its mirror reflection and the reference point of space. The comparison of sounding results in the presence and absence of recirculation is given.

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Methodological approaches to determining the consumer motivation of children regarding nutrition in educational institutions

Socio-Economic Research Bulletin ◽

10.33987/vsed.3-4(74-75).2020.174-188 ◽

2020 ◽

pp. 174-188

Author(s):

Anastasiia Konovalenko

Keyword(s):

Consumer Behavior ◽

Consumer Goods ◽

Reference Point ◽

Methodological Approach ◽

Educational Institutions ◽

Consumer Motivation ◽

Goods Market ◽

Marketing Activities ◽

Business Entities

The article considers approaches to the analysis of consumer motivation as a factor that affects on the model of consumer behavior. General scientific methods of cognition and special methods were used: analysis, synthesis, comparison, generalization, grouping, a survey method for collecting primary data, methods of statistical analysis of the results obtained, a graphical method for visualizing the data obtained, a matrix method for assessing the source and reference point of motivation. The proposed methodological approach to the definition of consumer motivation as an internal factor of consumer behavior is described, which involves the determination of the importance of individual factors of motivation based on the respondents' indication of their priority; characteristics of these motives, taking into account the source of occurrence (external stimulus / internal motives) and the orientation of motivation (fears / striving for achievement); grouping of motivation factors by belonging to the source of motivation and its reference point in the form of the «Source-reference point of motivation» matrix, which provides for the determination of the total value of the frequency of mention; building the consumer's motivational field on the basis of the «Source-benchmark of motivation» matrix, which characterizes the key vector of consumer motivation and serves as a guide for business entities to develop a strategy for marketing activities in the market segment. Based on the proposed approach, an analysis of the motivation of school-age children in the market of food products and services was carried out on the results of the survey. Changes in the child’s motivation in the process of growing up have been proven. These results indicate that children weigh their desire to enjoy food with other values, often not understanding what they can oppose to their own desire to enjoy food. The priority vector of children psychological motivation direction is a reference to internal fears and their own desire for achievement. Based on the results of the research of children consumer behavior in the market of food and food services in educational institutions, a methodology for determining the key characteristics of consumer motivation in the consumer goods market by assessing the source and reference point of motivation and building a motivational field was substantiated. It is advisable to use the proposed methodological approach to characterize the motivation of individual segments of consumers in the consumer goods market in order to further planing the marketing activities of business entities.

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Domains of Mobility for a Planar Body Moving Among Obstacles

Volume 3: 22nd Design Automation Conference ◽

10.1115/96-detc/dac-1602 ◽

1996 ◽

Author(s):

Edward J. Haug ◽

Frederick A. Adkins ◽

Dan I. Coroian

Keyword(s):

Reference Point ◽

Degrees Of Freedom ◽

Full Range ◽

The Body ◽

General Application ◽

Limited Mobility ◽

Moving Body ◽

Planar Convex ◽

Stationary Obstacles

Abstract A formulation is presented for defining domains of mobility for a planar convex body moving with three degrees-of-freedom among convex planar obstacles. Applications included are determination of areas of a factory floor or material storage facility in which objects can be manipulated without impacting fixed obstacles. Mobility of the moving body is defined to encompass (1) dextrous mobility of the body; i.e., points that can be reached by a reference point on the body and at which the body can be rotated through its full range of admissible orientations without penetrating any stationary obstacle, and (2) limited mobility of the body; i.e., points that can be reached by the reference point and at which the body does not penetrate any stationary obstacle, for some admissible orientation. Analytical criteria for points on boundaries of domains of mobility are derived and numerical methods suitable for mapping these boundaries are summarized. An elementary example involving a moving and a stationary ellipse, with and without orientation restrictions, is solved analytically to illustrate the method. A more general application with one moving body and three stationary obstacles is solved numerically.

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