Results 71 to 80 of about 1,794,286 (406)

Long‐term stability analysis of beam shape in a robotic radiosurgery system

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study aimed to investigate the long‐term stability of CyberKnife beam profile parameters and assess their compliance with existing quality assurance (QA) guidelines. We evaluated beam profiles in both standard and diagonal planes over 3.5 years post‐installation to detect potential issues and ensure consistent beam quality.
Ryoichi Hinoto   +4 more
wiley   +1 more source

Demonstration of an enhanced dosing pattern for debulking large and bulky unresectable tumors via differential hole‐size spatially fractionated radiotherapy

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose/objective We propose a novel lattice deployment for spatially fractionated radiotherapy (SFRT) treatments. In this approach, a larger diameter high‐dose sphere is centrally placed in the bulky tumor mass and surrounded by smaller diameter high‐dose spheres.
Joshua Misa   +2 more
wiley   +1 more source

Promoting wildlife health or fighting wildlife disease: Insights from History, Philosophy, and Science

open access: yesWildlife Society Bulletin, 2012
Although healthy wildlife populations are often a goal of wildlife management, ambiguity over the meaning of the term health may limit its effectiveness in guiding management objectives. Health is a complex concept with empirical and normative qualities;
Shauna L. Hanisch   +2 more
doaj   +1 more source

Bridging the Gap between the Normative and the Descriptive: Bounded Epistemic Rationality [PDF]

open access: yesInterdisciplinary Description of Complex Systems
The aim of the article is to propose bounded epistemic rationality as a concept that blurs the divide between normative and descriptive approaches to the study of rationality.
Nastja Tomat
doaj   +1 more source

Global variation in grip strength: a systematic review and meta-analysis of normative data

open access: yesAge and Ageing, 2016
Background: weak grip strength is a key component of sarcopenia and is associated with subsequent disability and mortality. We have recently established life course normative data for grip strength in Great Britain, but it is unclear whether the cut ...
R. Dodds   +5 more
semanticscholar   +1 more source

The Alienation Objection to Consequentialism [PDF]

open access: yes, 2020
An ethical theory is alienating if accepting the theory inhibits the agent from fitting participation in some normative ideal, such as some ideal of integrity, friendship, or community.
Baker, Calvin, Maguire, Barry
core  

The Evolution of Norms

open access: yesPLoS Biology, 2005
Biologists and social scientists need one another, and must collectively direct more of their attention to understanding how social norms develop and change.
Paul R. Ehrlich, Simon A. Levin
openaire   +5 more sources

Dosimetric evaluation and clinical application of collimated apertures with proton beam line scanning in stereotactic radiotherapy

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Stereotactic radiotherapy (SRT) is a highly effective treatment with precision for small, localized lesions. Proton therapy, characterized by the Bragg peak, offers superior dose conformity compared to photon‐based approaches. However, challenges remain in minimizing lateral penumbra and optimizing dose delivery, particularly for small
Chen‐Yu Chou   +3 more
wiley   +1 more source

Vladimir Putin, Twenty Years On: Russia’s Foreign Policy

open access: yesVestnik RUDN. International Relations, 2020
This article touches upon the main dynamics in Russian foreign policy since Vladimir Putin came to power in 2000. Following a Constructivist approach to the analysis of foreign policy, the article positions this study at the intersection of domestic ...
Maria Raquel Freire
doaj   +1 more source

Accuracy and reproducibility of a single‐pose image‐to‐robot registration method for mobile C‐arm cone beam CT guided histotripsy

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Histotripsy is a focal tumor therapy that utilizes focused ultrasound (US) to mechanically destroy tissue. To overcome visualization limitations of diagnostic US‐guidance, C‐arm cone beam CT (CBCT)‐guided histotripsy is being developed, for which a mobile C‐arm could increase accessibility. CBCT‐guided histotripsy uses a phantom with a
Grace M. Minesinger   +5 more
wiley   +1 more source

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