Results 71 to 80 of about 1,578,105 (322)

Time as the result of the observer’s measurement

Physics essays, 2021
Since the beginning of physics, time is the duration of material changes. We measure time with clocks. The notion of time in Newton physics, Einstein’s relativity, and quantum physics are different despite we always measure the same time with the same ...
A. Šorli, Štefan Čelan
semanticscholar   +1 more source

‘They Need to Hear You Say It’: Healthcare Professionals’ Perspectives on Barriers and Enablers to End‐of‐Life Discussions With Adolescents and Young Adults With Cancer

Pediatric Blood &Cancer, EarlyView.
ABSTRACT End‐of‐life conversations with adolescents and young adults (AYAs) with cancer rarely occur without the guidance of healthcare professionals. As a part of the ‘Difficult Discussions’ study, focused on palliative care and advance care planning discussions with AYAs with cancer, we investigated the factors that healthcare professionals identify ...
Justine Lee, Holly Evans, Claire E. Wakefield, Antoinette Anazodo, Richard J. Cohn, Brittany C. McGill, Elizabeth A. Lobb, Lori Wiener, Madeleine L. Juhrmann, Ursula M. Sansom‐Daly   +9 more
wiley   +1 more source

Feasibility and Safety of High‐Dose Proton Re‐Irradiation in Recurrent Pediatric Central Nervous System Tumors: A Single‐Institution Retrospective Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Purpose Pediatric central nervous system (CNS) tumors often recur despite multimodality therapy. Although re‐irradiation (re‐RT) has historically been limited by concerns for severe late toxicities, modern techniques have renewed interest in this approach. Proton therapy provides dosimetric advantages that may enable curative re‐treatment with
Jin‐Ho Song, Jonathan Baron, Carlos Chavez Perez, Sidharth Ramesh, Jane Minturn, Kavita A. Desai, Amish C. Shah, Jean M. Belasco, Kristina A. Cole, Michael J. Fisher, Phillip B. Storm, Peter M. Madsen, Goldie Kurtz, Robert A. Lustig, Christine Hill‐Kayser, Michael J. LaRiviere   +15 more
wiley   +1 more source

An epistemological and bio-physical point of view on complex systems

Science & Philosophy, 2021
In this article, after a historical introduction, we give an epistemological point of view of the physics of complex systems. Complex systems are epistemologically interesting because of the fundamental interaction experiment/observer and physicists in ...
Stefano Polizzi
doaj   +1 more source

A Categorical Framework for Quantum Theory

, 2009
Underlying any theory of physics is a layer of conceptual frames. They connect the mathematical structures used in theoretical models with physical phenomena, but they also constitute our fundamental assumptions about reality.
Aharonov, Aspect, Bell, Bitbol, Cramer, Dalla Chiara, deWitt, Einstein, Einstein, Everett, Filk, Ghirardi, Greenberger, Griffiths, Haag, Hiley, Horodecki, Károlyházy, Omnés, Oppenheim, Oppenheim, Rovelli, Schlosshauer, Scully, Scully, Smerlak, Tumulka, von Weizsäcker   +27 more
core   +1 more source

The Observer Concept in Science as a Basis for Its Further Curricular Application Within the Discipline-Culture Paradigm

Science Education
This study considers the concept of observer-the fundamental concept axial for fundamental physical theories. The history of the observer concept in physics is reviewed and summarized.
I. Galili
semanticscholar   +1 more source

Defining Roles in Pediatric Palliative Care: Perspectives From Oncology and Palliative Care Teams

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Early integration of pediatric palliative care (PPC) is associated with improved symptom management, quality of life, and healthcare utilization for children with cancer. Despite this, variation persists in how PPC is understood, operationalized, and integrated within pediatric oncology programs. In particular, ambiguity surrounding
Leeat Granek, Lori Wiener, Stephanie Veldhuijzen van Zanten, Donna Johnston, Fyeza Hasan, Adam Rapoport, Nathasha Datoo, Kimberley Widger, Sumit Gupta, Karen Fergus, Anthony K. C. Chan, Alisha Kassam, Emily McCullogh, Dave Lysecki   +13 more
wiley   +1 more source

How to select observers

Physical Review Research, 2020
A number of problems in physics, mathematics, and philosophy involve observers in given situations which lead to debates about whether observer-specific information should affect the probability for some outcome or hypothesis.
Robert Garisto
doaj   +1 more source

Objective Observer-Relative Flow Visualization in Curved Spaces for Unsteady 2D Geophysical Flows

IEEE Transactions on Visualization and Computer Graphics, 2020
Computing and visualizing features in fluid flow often depends on the observer, or reference frame, relative to which the input velocity field is given. A desired property of feature detectors is therefore that they are objective, meaning independent of ...
P. Rautek, Matej Mlejnek, Johanna Beyer, J. Troidl, H. Pfister, T. Theußl, Markus Hadwiger   +6 more
semanticscholar   +1 more source

Relative Position Model Predictive Control of Double Cube Test-Masses Drag-Free Satellite with Extended Sliding Mode Observer

, 2021
The drag-free satellites, being space-borne ultrahigh precise measurement platforms, have played irreplaceable roles in a great number of space science missions such as navigation, earth science, fundamental physics, and astrophysics.
Enyou Wang, Jinxiu Zhang, Huayi Li, Ming Liu   +3 more
semanticscholar   +1 more source