Procedural Volume Modeling, Rendering, and Visualization

2003 ◽  
pp. 317-331
Author(s):  
David Ebert ◽  
Penny Rheingans
2021 ◽  
Vol 2042 (1) ◽  
pp. 012074
Author(s):  
G Besuievsky ◽  
E García-Nevado ◽  
G Patow ◽  
B Beckers

Abstract Finite element methods for heat simulation at urban scale require mesh-volume models, where the meshing process requires a special attention in order to satisfy FEM requirements. In this paper we propose a procedural volume modeling approach for automatic creation of mesh-volume buildings, which are suitable for FEM simulations at urban scale. We develop a basic rule-set library and a building generation procedure that guarantee conforming meshes. In this way, urban models can be easily built for energy analysis. Our test-case shows a street created with building prototypes that fulfill all the requirements for being loaded in a FEM numerical platform such as Cast3M (www-cast3m.cea.fr).


Author(s):  
James J. Drinane ◽  
Brian Drolet ◽  
Ashit Patel ◽  
Joseph A. Ricci

Abstract Introduction Fellowship-trained hand surgeons may have residency training in either orthopedic, plastic, or general surgery, generating significant variability in education background. To study the effect of different training backgrounds on practice pattern variations, we utilized the NSQIP (National Surgical Quality Improvement Database) database to assess hand surgery volumes and case variety by specialty. Materials and Methods NSQIP years 2008 to 2017 was queried with hand surgery current procedural terminology codes defined by the American Board of Orthopedic Surgery. Procedures were grouped according to type and specialty, and relative rates calculated. Hand society membership data were used to determine if procedural volume for each specialty in each category and overall contribution to the volume of hand surgery performed nationally was distributed in accordance with membership data. Results A total of 145,015 hand surgeries were performed; 13,267 (9.1%) by general surgeons, 28,402 (19.6%) by plastic surgeons, and 103,346 (71.3%) by orthopedic surgeons. Orthopedic surgeons performed significantly more bone, fracture, joint, and tendon cases. General surgeons and plastic surgeons performed higher than expected numbers of soft tissue coverage and cases overall with respective excesses of 183 and 22%. Conclusion Hand surgery is an available fellowship pathway from multiple residencies. Fellowship training does not level the field of real-world practice patterns. Residency training experiences significantly impact practice.


Author(s):  
Keerat Rai Ahuja ◽  
Salik Nazir ◽  
Geeta Bhagia ◽  
Sanjay Kumar ◽  
Mohammed Mhanna ◽  
...  

2021 ◽  
pp. 000313482110241
Author(s):  
Adam Truong ◽  
Farin Amersi ◽  
Van Chau ◽  
Taryne Imai

Background Fellows have been uniquely affected by the widespread changes in educational structure, mandatory limitations in elective procedural volume, and hiring freezes during the COVID-19 global pandemic. Study Design A voluntary and anonymous survey was distributed to all Graduate Medical Education fellows at a tertiary medical center querying perspectives on clinical and didactic training and job placement. Results A total of 47 of 121 fellows (39%) completed the survey. The majority were in a medical (43%) or surgical specialty (34%) followed by critical care (13%) and procedure-based (11%) fellowships. Approximately 59% of surveyed fellows felt their programs were providing a virtual curriculum that would train them just as well as the in-person curriculum. Twenty-eight (60%) fellows were in their final or only year of training. Of the 25 fellows who were seeking employment, 52% have experienced difficulty in finding a job due to hiring freezes and 40% have encountered challenges with job interview cancellations and changes to virtual interview formats. Conclusion Almost half of surveyed fellows reported an educational deterioration due to COVID-19 and graduating fellows seeking employment felt hindered by both the virtual interview format and widespread hiring freeze. Fellows are both unique and vulnerable as they balance the solidification of clinical training with securing employment during these tumultuous and unprecedented times.


Landslides ◽  
2017 ◽  
Vol 14 (4) ◽  
pp. 1345-1360 ◽  
Author(s):  
Ian P. Donovan ◽  
Paul M. Santi

Angiology ◽  
2021 ◽  
pp. 000331972110056
Author(s):  
Kosmas I. Paraskevas ◽  
Richard P. Cambria

2011 ◽  
Vol 146 (2) ◽  
pp. 226-229 ◽  
Author(s):  
Linda N. Lee ◽  
Neil Bhattacharyya

Objectives. To determine how rates of operative facial fractures may have changed between 1996 and 2006 and to determine the potential impact of such change on otolaryngology residency surgical key indicator cases. Study Design. Historical cohort study. Setting. Academic medical center. Subjects and Methods. The National Hospital Discharge Survey (NHDS) and National Survey of Ambulatory Surgery (NSAS) 1996 and 2006 cases were reviewed, extracting all cases of adult nasal, malar/zygomatic, maxillary, and mandibular fracture reductions in inpatient and outpatient settings, respectively. Procedure rates for each facial fracture were tabulated and compared between 1996 and 2006. Results. Overall in 1996, there were an estimated 113,041 ± 3740 operative facial fracture repairs performed. Among the 3 key indicator fracture repairs most relevant to otolaryngologists, there were 15,810 ± 2143 open nasal fracture reductions, 9360 ± 1742 open zygomaticomaxillary (ZMC) fracture reductions, and 20,214 ± 2585 open mandibular fracture repairs. Overall in 2006, there were 120,463 ± 7554 total facial fracture procedures, with 11,613 ± 2846 open nasal fracture reductions, 10,216 ± 2881 open ZMC fracture reductions, and 17,965 ± 3171 open mandibular repairs. Comparing cohorts, there was no significant change in number of open nasal, ZMC, or mandibular fracture repairs ( P = .24, P = .58, P = .80, respectively). Conclusion. Facial fracture procedure rates have remained largely stable over the past 10 years. These data have implications for otolaryngology training programs and could help guide resident education in facial trauma.


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