1,176 research outputs found
Avoiding misclassification bias with the traditional Charnley classification: rationale for a fourth Charnley class BB
No full textLong-term follow up of patients with total hip arthroplasty (THA) revealed a marked deterioration of walking capacities in Charnley class B after postoperative year 4. We hypothesized that a specific group of patients, namely those with unilateral hip arthroplasty and an untreated but affected contralateral hip was responsible for this observation. Therefore, we conducted a study taking into consideration the two subclasses that make up Charnley class B: patients with unilateral THA and contralateral hip disease and patients with bilateral THA. A sample of 15,160 patients with 35,773 follow ups that were prospectively collected over 10 years was evaluated. The sample was categorized into four classes according to a new modified Charnley classification. Annual analyses of the proportion of patients with ambulation longer than 60 min were conducted. The traditionally labeled Charnley class B consists of two very different patient groups with respect to their walking capacities. Those with unilateral THA and contralateral hip disease have underaverage walking capacities and a deterioration of ambulation beginning 3 to 4 years after surgery. Those with bilateral THA have stable overaverage walking capacities similar to Charnley class A. An extension of the traditional Charnley classification is proposed, taking into account the two different patient groups in Charnley class B. The new fourth Charnley class consists of patients with bilateral THA and was labeled BB in order to express the presence of two artificial hip joints and to preserve the traditional classification A through C
Parallel Attentive Visual Tracking
No full textThe research reported here addresses the problem of detecting and tracking independently moving objects from a moving observer in real time, using corners as object tokens. Corners are detected using the Harris corner detector and local image-plane constraints are employed to solve the correspondence problem. The approach relaxes the restrictive static-world assumption conventionally made, and is therefore capable of tracking independently moving and deformable objects. Tracking is performed without the use of any 3-dimensional motion model. The technique is novel in that, unlike traditional feature tracking algorithms where feature detection and tracking is carried out over the entire image-plane, here it is restricted to those areas most likely to contain meaningful image structure. Two distinct types of instantiation regions are identified, these being the focus-of-expansion region and border regions of the image-plane. The size and location of these regions are defined from a combination of odometry information and a limited knowledge of the operating scenario. The algorithms developed have been tested on real image sequences taken from typical driving scenarios. Implementation of the algorithm using T800 Transputers has shown that near-linear speedups are achievable, and that real-time operation is possible (half-video rate has been achieved using 30 processing elements)
GSWA Charnley Elevation Grid Geodetic
No full textMaintenance and Update Frequency: notPlannedStatement: This GSWA Charnley Elevation Grid Geodetic is elevation data for the West Kimberley (Prince Regent - Montague - Charnley), WA,2011 acquired under the project No. 1236 for the geological survey of WA. The grid has a cell size of 0.00042 degrees (approximately 45m). This grid contains the ground elevation values relative to the geoid for the West Kimberley (Prince Regent - Montague - Charnley), WA,2011. It represents the vertical distance from a location on the Earth's surface to the geoid. The data are given in units of meters. The processed data are checked by GA geophysicists using standard methods for assessing quality to ensure that the final data are fit-for-purpose.Digital Elevation data record the terrain height variations from the processed point- or line-located data recorded during a geophysical survey. This GSWA Charnley Elevation Grid Geodetic is elevation data for the West Kimberley (Prince Regent - Montague - Charnley), WA,2011. This survey was acquired under the project No. 1236 for the geological survey of WA. The grid has a cell size of 0.00042 degrees (approximately 45m). This grid contains the ground elevation relative to the geoid for the West Kimberley (Prince Regent - Montague - Charnley), WA,2011. It represents the vertical distance from a location on the Earth's surface to the geoid. The data are given in units of meters. The processed data is checked for quality by GA geophysicists to ensure that the final data released by GA are fit-for-purpose
Displaced women: multilingual narratives of migration in Europe (Ed. M Palladino)
No full textMultilingual Narratives of Migration in Europe Lucia Aiello, Joy Charnley, Mariangela Palladino. WOMEN Edited by Lucia Aiello, Joy Charnley -mm and Mariangela Palladino Displaced Women Displaced Women: Multilingual Narratives of..
Attentive Visual Tracking
No full textThe research reported here addresses the problem of detecting and tracking independently moving objects from a moving observer in real time, using corners as object tokens. Local image-plane constraints are employed to solve the correspondence problem. The approach relaxes the restrictive static-world assumption conventionally made, and is therefore capable of tracking independently moving and deformable objects. Tracking is performed without the use of any 3-dimensional motion model. The technique is novel in that, unlike traditional feature tracking algorithms where feature detection and tracking is carried out over the entire image-plane, here it is restricted to those areas most likely to contain meaningful image structure. Feature instantiation regions are defined from a combination of odometry information and a limited knowledge of the operating scenario. The algorithms developed have been tested on real image sequences taken from typical driving scenarios. Preliminary experiments on a parallel (Transputer) architecture indicate that real-time operation is achievable
The Rise of the Weekly Magazine in Italy
No full text The popular weekly is a thriving business and seems due for expansion, the author found in 1952-53 while serving as a Fulbright Lecturer at the University of Florence. Professor of Journalism at Minnesota, Mr. Charnley is an experienced magazine writer and editor, and author of a textbook in this field. </jats:p
Displaced women: multilingual narratives of migration in Europe
No full textMultilingual Narratives of Migration in Europe Lucia Aiello, Joy Charnley, Mariangela Palladino. WOMEN Edited by Lucia Aiello, Joy Charnley -mm and Mariangela Palladino Displaced Women Displaced Women: Multilingual Narratives of..
Obituary of Emma F. Charnley, 100, of Cape Elizabeth, a native of Westminster, M
No full textObituary of Emma F. Charnley, 100, of Cape Elizabeth, a native of Westminster, Mass
Women in Charnley class C fail to improve in mobility to a higher degree after total hip replacement
No full textThe Charnley comorbidity classification organizes patients into 3 classes: (A) 1 hip involved, (B) 2 hips involved, and (C) other severe comorbidities. Although this simple classification is a known predictor of health-related quality of life (HRQoL) after total hip replacement (THR), interactions between Charnley class, sex, and age have not been investigated and there is uncertainty regarding whether A and B should be grouped together
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