A Multidimensional Definition of Partner Abuse: Development and Preliminary Validation of the Composite Abuse Scale

2017 ◽  
pp. 15-31
Author(s):  
Kelsey Hegarty ◽  
Mary Sheehan ◽  
Cynthia Schonfeld
Keyword(s):  
Partner Abuse ◽  
Preliminary Validation ◽  
Definition Of

scholarly journals Numerical modeling and preliminary validation of drag-based vertical axis wind turbine

2015 ◽  
Vol 36 (1) ◽  
pp. 19-38 ◽  
Author(s):  
Tomasz Krysiński ◽  
Zbigniew Buliński ◽  
Andrzej J. Nowak
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Boundary Layer Separation ◽  
Complex Nature ◽  
Vertical Axis Wind Turbine ◽  
Preliminary Validation ◽  
Definition Of ◽  
Key Aspects ◽  
Simulation Parameters ◽  
The Impact

Abstract The main purpose of this article is to verify and validate the mathematical description of the airflow around a wind turbine with vertical axis of rotation, which could be considered as representative for this type of devices. Mathematical modeling of the airflow around wind turbines in particular those with the vertical axis is a problematic matter due to the complex nature of this highly swirled flow. Moreover, it is turbulent flow accompanied by a rotation of the rotor and the dynamic boundary layer separation. In such conditions, the key aspects of the mathematical model are accurate turbulence description, definition of circular motion as well as accompanying effects like centrifugal force or the Coriolis force and parameters of spatial and temporal discretization. The paper presents the impact of the different simulation parameters on the obtained results of the wind turbine simulation. Analysed models have been validated against experimental data published in the literature.

scholarly journals Design, Simulation, and Preliminary Validation of a Four-Legged Robot

Machines ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 82
Author(s):  
Stefano Rodinò ◽  
Elio Matteo Curcio ◽  
Antonio di Bella ◽  
Mattia Persampieri ◽  
Michele Funaro ◽  
...  
Keyword(s):  
Design Process ◽  
Legged Robot ◽  
Proof Of Concept ◽  
User Friendliness ◽  
Autonomous Operation ◽  
Preliminary Validation ◽  
Dynamic Performances ◽  
Definition Of ◽  
And Control ◽  
Masters Students

This paper outlines the design process for achieving a novel four-legged robot for exploration and rescue tasks. This application is also intended as an educational mean for masters’ students aiming at gaining skills in designing and operating a complex mechatronic system. The design process starts with an analysis of the desired locomotion and definition of the main requirements and constraints. Then, the paper focuses on the key design challenges, including analytical/numerical modeling and simulations of kinematic and dynamic performances. Specific attention is addressed to the manufacturing of a proof-of-concept prototype, including mechanical and control hardware, as well as the development of the needed software for an autonomous operation. Preliminary tests were carried out, to validate the main features required by the final prototype, to prove its feasibility and user-friendliness, as well as the effectiveness of this complex mechatronic design task for successfully engaging students towards learning complex theoretical, numerical, and practical skills.

A Parameter Identification Method for Road Accidents Reconstruction

2003 ◽  
Author(s):  
G. Mastinu ◽  
M. Gobbi ◽  
M. Mimini
Keyword(s):  
Approximation Technique ◽  
Road Accidents ◽  
Global Approximation ◽  
Identification Method ◽  
Preliminary Validation ◽  
Road Friction ◽  
Conservation Of Momentum ◽  
Definition Of ◽  
Short Time ◽  
The Impact

The paper deals with the mathematical reconstruction of road accidents. Often, many of the relevant parameters for an accurate simulation are not known. The aim of the paper is to introduce and validate a new method to identify these (many) relevant parameters, such as exact impact location, tyre-road friction, ... The velocity of the two vehicles before the impact are computed by applying the principle of conservation of momentum and angular momentum and by estimating the kinetic energy losses. The identification process is based on a Global Approximation technique. Up to 17 numerical values pertaining to both running conditions before impact and parameters can be defined accurately and in a relatively short time. The definition of the 17 numerical values is made on the basis of the known data coming from the positions of the vehicles at rest and from tyre marks (if present and measured). The method has undergone a preliminary validation. Two case studies are presented which show the effectiveness of the identification method.

scholarly journals MRI lesions in the sacroiliac joints of patients with spondyloarthritis: an update of definitions and validation by the ASAS MRI working group

2019 ◽  
Vol 78 (11) ◽  
pp. 1550-1558 ◽  
Author(s):  
Walter P Maksymowych ◽  
Robert GW Lambert ◽  
Mikkel Østergaard ◽  
Susanne Juhl Pedersen ◽  
Pedro M Machado ◽  
...  
Keyword(s):  
Working Group ◽  
Structural Reliability ◽  
Intraclass Correlation ◽  
Low Frequency ◽  
Joint Space ◽  
Kappa Statistics ◽  
Preliminary Validation ◽  
Mri Scans ◽  
Structural Lesion ◽  
Definition Of

ObjectivesThe Assessment of SpondyloArthritis international Society (ASAS) MRI working group (WG) was convened to generate a consensus update on standardised definitions for MRI lesions in the sacroiliac joint (SIJ) of patients with spondyloarthritis (SpA), and to conduct preliminary validation.MethodsThe literature pertaining to these MRI lesion definitions was discussed at three meetings of the group. 25 investigators (20 rheumatologists, 5 radiologists) determined which definitions should be retained or required revision, and which required a new definition. Lesion definitions were assessed in a multi-reader validation exercise using 278 MRI scans from the ASAS classification cohort by global assessment (lesion present/absent) and detailed scoring (inflammation and structural). Reliability of detection of lesions was analysed using kappa statistics and the intraclass correlation coefficient (ICC).ResultsNo revisions were made to the current ASAS definition of a positive SIJ MRI or definitions for subchondral inflammation and sclerosis. The following definitions were revised: capsulitis, enthesitis, fat lesion and erosion. New definitions were developed for joint space enhancement, joint space fluid, fat metaplasia in an erosion cavity, ankylosis and bone bud. The most frequently detected structural lesion, erosion, was detected almost as reliably as subchondral inflammation (κappa/ICC:0.61/0.54 and 0.60/0.83) . Fat metaplasia in an erosion cavity and ankylosis were also reliably detected despite their low frequency (κappa/ICC:0.50/0.37 and 0.58/0.97).ConclusionThe ASAS-MRI WG concluded that several definitions required revision and some new definitions were necessary. Multi-reader validation demonstrated substantial reliability for the most frequently detected lesions and comparable reliability between active and structural lesions.

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

2.2. Working Group 2: Conceptual Definitions of Reference Coordinate Systems for Earth Dynamics

1975 ◽  
Vol 26 ◽  
pp. 21-26
Keyword(s):  
Coordinate System ◽  
Working Group ◽  
General Character ◽  
Coordinate Systems ◽  
Reference Coordinate System ◽  
Group 2 ◽  
Definition Of ◽  
Earth Dynamics

An ideal definition of a reference coordinate system should meet the following general requirements:1. It should be as conceptually simple as possible, so its philosophy is well understood by the users.2. It should imply as few physical assumptions as possible. Wherever they are necessary, such assumptions should be of a very general character and, in particular, they should not be dependent upon astronomical and geophysical detailed theories.3. It should suggest a materialization that is dynamically stable and is accessible to observations with the required accuracy.

Symbiotic Stars at Optical, Infrared and Radio Wavelengths

1979 ◽  
Vol 46 ◽  
pp. 125-149 ◽  
Author(s):  
David A. Allen
Keyword(s):  
Temperature Regime ◽  
Type Star ◽  
Stellar Systems ◽  
Symbiotic Stars ◽  
Lower Excitation ◽  
Definition Of ◽  
Original Type

No paper of this nature should begin without a definition of symbiotic stars. It was Paul Merrill who, borrowing on his botanical background, coined the termsymbioticto describe apparently single stellar systems which combine the TiO absorption of M giants (temperature regime ≲ 3500 K) with He II emission (temperature regime ≳ 100,000 K). He and Milton Humason had in 1932 first drawn attention to three such stars: AX Per, CI Cyg and RW Hya. At the conclusion of the Mount Wilson Ha emission survey nearly a dozen had been identified, and Z And had become their type star. The numbers slowly grew, as much because the definition widened to include lower-excitation specimens as because new examples of the original type were found. In 1970 Wackerling listed 30; this was the last compendium of symbiotic stars published.

Immunoferritin localization of intracellular antigens in positively stained frozen sections

1978 ◽  
Vol 36 (2) ◽  
pp. 168-169
Author(s):  
K. T. Tokuyasu
Keyword(s):  
Surface Tension ◽  
Water Surface ◽  
Thin Layers ◽  
The Other ◽  
Positive Staining ◽  
Frozen Sections ◽  
The Past ◽  
Ultrathin Frozen Sections ◽  
Definition Of

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).

Sign in / Sign up

Export Citation Format

Share Document