Results 81 to 90 of about 3,889,100 (366)

Current Algebra and Differential Geometry [PDF]

Journal of High Energy Physics, 2005
14 pages. Dedicated to Ludwig Faddeev on the occasion of his 70th birthday.
Thomas Strobl, Anton Alekseev, Anton Alekseev   +2 more
openaire   +5 more sources

Intrinsic Curvatures of Atomic Orbitals for Hydrogen-Like Atoms [PDF]

INCAS Bulletin
Within the quantum model for the hydrogen-like atom and taking into account the concepts of differential geometry, we calculate the intrinsic curvature of several types of atomic orbitals. Based on this concept of intrinsic curvature, a classification of
Diana Rodica RADNEF-CONSTANTIN, Sorin Stefan RADNEF   +1 more
doaj   +1 more source

Evaluating feature extraction reproducibility across image biomarker standardization initiative‐compliant radiomics platforms using a digital phantom

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background The aim of this study was to thoroughly analyze the reproducibility of radiomics feature extraction across three Image Biomarker Standardization Initiative (IBSI)‐compliant platforms using a digital phantom for benchmarking. It uncovers high consistency among common features while also pointing out the necessity for standardization ...
Han‐Back Shin, Heesoon Sheen, Jang‐Hoon Oh, Young Eun Choi, Kihoon Sung, Hyun Ju Kim   +5 more
wiley   +1 more source

Differential geometry of density states [PDF]

Reports on Mathematical Physics, 2005
21 pages, to appear in Rep.
MAN'KO VI, MARMO, GIUSEPPE, ZACCARIA F, SUDASRSHAN ECG   +3 more
openaire   +4 more sources

Advantages and limitations of navigation‐based multicriteria optimization (MCO) in selectively sparing pharyngeal constrictor muscles in head and neck radiotherapy treatment planning

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Sparing pharyngeal constrictor muscles (PCMs) during radiotherapy improves patient‐reported swallowing function. This study aimed to explore the feasibility of integrating knowledge‐based planning (KBP) with multicriteria optimization (MCO) in Eclipse v18.0 to selectively spare PCM, quantify the required trade‐off in prophylactic ...
Laura K. Howard, Simon J. P. Meara, Ehab M. Ibrahim, Carl G. Rowbottom   +3 more
wiley   +1 more source

Structural Reliability and Optimization Using Differential Geometric Approaches

Iraqi Journal for Computer Science and Mathematics
This study investigates how differential geometry ideas can be used to effectively carry out structural optimization and reliability analysis. Strong mathematical representations and methods for examining intricate surfaces and forms are provided by ...
Saad Abbas Abed, Mona Ghassan, Shaemaa Qaes, Mahmood S. Fiadh , Zaid Amer Mohammed   +4 more
doaj   +1 more source

Developing reference plans for evaluating global clinical trials credentialing and PSQA systems

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose To develop a practical framework for creating a diverse set of validated reference plans (varying in complexity) and implement a workflow to introduce beam modeling, calibration, and delivery errors into the reference cohort to test and compare various dosimetry audit methodologies.
Fre'Etta M. D. Brooks, Mohammad Hussein, Jessica Lye, Christopher L. Nelson, Nakamura Mitsuhiro, Mallory C. Glenn, Patricia Diez, Rushil Patel, Maddison Shaw, Ileana Silvestre Patallo, Miriam Barry, Catharine H. Clark, Joerg Lehmann, Stephen F. Kry   +13 more
wiley   +1 more source

Integrable systems in projective differential geometry

, 1999
Some of the most important classes of surfaces in projective 3-space are reviewed: these are isothermally asymptotic surfaces, projectively applicable surfaces, surfaces of Jonas, projectively minimal surfaces, etc.
Ferapontov, E. V.
core   +1 more source

Determination of the number of texture segments using wavelets

Electronic Journal of Differential Equations, 2001
This paper presents a robust method of determining the number of texture segments in an image. We take an $N imes N$ image and decompose it into $n imes n$ blocks.
Joseph P. Havlicek, Peter C. Tay
doaj  

Producing high quality cranial SRS plans with 4Pi planning technique in a commercial clinical solution

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose To generate high‐quality stereotactic radiosurgery (SRS) plans for single cranial lesions using 4Pi planning technique and compare these to our clinical “status quo” plans. Methods Eighteen vestibular schwannoma (VS) patients previously planned with Varian Eclipse RapidArc and treated on a Varian TrueBeam using 6FFF MV photon beams ...
Ganesh Narayanasamy, Nishan Shrestha, Milan Bimali, Fen Xia, Zhong Su   +4 more
wiley   +1 more source