scholarly journals A Hybrid Approach to Fermi Operator Expansion

2009 ◽  
Author(s):  
Michele Ceriotti ◽  
Thomas D. Kühne ◽  
Michele Parrinello ◽  
George Maroulis ◽  
Theodore E. Simos
Keyword(s):  
Hybrid Approach ◽  
Operator Expansion ◽  
Fermi Operator

scholarly journals Mixed Precision Fermi-Operator Expansion on Tensor Cores from a Machine Learning Perspective

2021 ◽  
Author(s):  
Joshua Finkelstein ◽  
Justin S. Smith ◽  
Susan M. Mniszewski ◽  
Kipton Barros ◽  
Christian F. A. Negre ◽  
...  
Keyword(s):  
Machine Learning ◽  
Operator Expansion ◽  
Fermi Operator ◽  
Mixed Precision

Improved Fermi operator expansion methods for fast electronic structure calculations

2003 ◽  
Vol 119 (8) ◽  
pp. 4117-4125 ◽  
Author(s):  
WanZhen Liang ◽  
Chandra Saravanan ◽  
Yihan Shao ◽  
Roi Baer ◽  
Alexis T. Bell ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Electronic Structure Calculations ◽  
Operator Expansion ◽  
Fermi Operator ◽  
Fast Electronic ◽  
Structure Calculations

scholarly journals Linear Scaling Pseudo Fermi-Operator Expansion for Fractional Occupation

2018 ◽  
Vol 15 (1) ◽  
pp. 190-200
Author(s):  
Susan M. Mniszewski ◽  
Romain Perriot ◽  
Emanuel H. Rubensson ◽  
Christian F. A. Negre ◽  
Marc J. Cawkwell ◽  
...  
Keyword(s):  
Linear Scaling ◽  
Operator Expansion ◽  
Fermi Operator

scholarly journals Spectrum-splitting approach for Fermi-operator expansion in all-electron Kohn-Sham DFT calculations

2017 ◽  
Vol 95 (3) ◽  
Author(s):  
Phani Motamarri ◽  
Vikram Gavini ◽  
Kaushik Bhattacharya ◽  
Michael Ortiz
Keyword(s):  
Dft Calculations ◽  
Operator Expansion ◽  
Spectrum Splitting ◽  
Fermi Operator

Surgical and endovascular hybrid approach in peripheral arterial disease of the lower limbs

VASA ◽  
2016 ◽  
Vol 45 (5) ◽  
pp. 417-422 ◽  
Author(s):  
Anouk Grandjean ◽  
Katia Iglesias ◽  
Céline Dubuis ◽  
Sébastien Déglise ◽  
Jean-Marc Corpataux ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Peripheral Arterial Disease ◽  
Limb Salvage ◽  
Hybrid Approach ◽  
Arterial Disease ◽  
Early Mortality ◽  
Secondary Patency ◽  
Limb Salvage Rate ◽  
Peripheral Arterial ◽  
Salvage Rate

Abstract. Background: Multilevel peripheral arterial disease is frequently observed in patients with intermittent claudication or critical limb ischemia. This report evaluates the efficacy of one-stage hybrid revascularization in patients with multilevel arterial peripheral disease. Patients and methods: A retrospective analysis of a prospective database included all consecutive patients treated by a hybrid approach for a multilevel arterial peripheral disease. The primary outcome was the patency rate at 6 months and 1 year. Secondary outcomes were early and midterm complication rate, limb salvage and mortality rate. Statistical analysis, including a Kaplan-Meier estimate and univariate and multivariate Cox regression analyses were carried out with the primary, primary assisted and secondary patency, comparing the impact of various risk factors in pre- and post-operative treatments. Results: 64 patients were included in the study, with a mean follow-up time of 428 days (range: 4 − 1140). The technical success rate was 100 %. The primary, primary assisted and secondary patency rates at 1 year were 39 %, 66 % and 81 %, respectively. The limb-salvage rate was 94 %. The early mortality rate was 3.1 %. Early and midterm complication rates were 15.4 % and 6.4 %, respectively. The early mortality rate was 3.1 %. Conclusions: The hybrid approach is a major alternative in the treatment of peripheral arterial disease in multilevel disease and comorbid patients, with low complication and mortality rates and a high limb-salvage rate.

Delayed Closure of Multiple Muscular Ventricular Septal Defects in an Infant after Coarctation Repair and a Hybrid Procedure�A Case Report

2011 ◽  
Vol 14 (1) ◽  
pp. 67 ◽  
Author(s):  
Ireneusz Haponiuk ◽  
Maciej Chojnicki ◽  
Radosaw Jaworski ◽  
Jacek Juciski ◽  
Mariusz Steffek ◽  
...  
Keyword(s):  
Septal Defect ◽  
Color Doppler ◽  
Hybrid Approach ◽  
Ventricular Septal Defects ◽  
Color Doppler Echocardiography ◽  
Septal Defects ◽  
Coarctation Repair ◽  
Step Procedure ◽  
The Right ◽  
Delayed Closure

There are several strategies of surgical approach for the repair of multiple muscular ventricular septal defects (mVSDs), but none leads to a fully predictable, satisfactory therapeutic outcome in infants. We followed a concept of treating multiple mVSDs consisting of a hybrid approach based on intraoperative perventricular implantation of occluding devices. In this report, we describe a 2-step procedure consisting of a final hybrid approach for multiple mVSDs in the infant following initial coarctation repair with pulmonary artery banding in the newborn. At 7 months, sternotomy and debanding were performed, the right ventricle was punctured under transesophageal echocardiographic guidance, and the 8-mm device was implanted into the septal defect. Color Doppler echocardiography results showed complete closure of all VSDs by 11 months after surgery, probably via a mechanism of a localized inflammatory response reaction, ventricular septum growth, and implant endothelization.

Sign in / Sign up

Export Citation Format

Share Document