Results 91 to 100 of about 1,556,157 (299)

Arrow of time in a recollapsing quantum universe

, 1994
We show that the Wheeler-DeWitt equation with a consistent boundary condition is only compatible with an arrow of time that formally reverses in a recollapsing universe. Consistency of these opposite arrows is facilitated by quantum effects in the region
A. Higuchi, A.E. Sikkema, C. Kiefer, C. Kiefer, C. Kiefer, C. Kiefer, C. Kiefer, D.N. Page, D.N. Page, E. Joos, H. D. Zeh, H. Price, H.D. Conradi, H.D. Zeh, H.D. Zeh, H.D. Zeh, H.D. Zeh, H.D. Zeh, H.D. Zeh, H.D. Zeh, J.B. Barbour, J.B. Barbour, J.B. Hartle, J.B. Hartle, J.J. Halliwell, J.J. Halliwell, J.J. Halliwell, J.P. Paz, P. Pearle, P.C.W. Davies, R. Griffiths, R. Laflamme, R. Laflamme, R. Penrose, R.B. Partridge, S.W. Hawking, S.W. Hawking, S.W. Hawking, T. Gold, Y. Aharonov   +39 more
core   +2 more sources

Prevalence and Trajectory of Household Material Hardship Among Children With Advanced Cancer

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Families of children with advanced cancer living in poverty experience inferior outcomes including poor parent mental health and worse child quality of life. Household material hardship (HMH: food, housing, transportation, and/or utility insecurity) is a modifiable poverty exposure—and potential intervention target—that ...
Sarah Wright, Morgan A. Paul, Selena Murcia Mendez, Emily Jones, Lucille Lokko, Chelsea Heneghan, Nicholas Purol, Morgan Arnold, Rahela Aziz‐Bose, Colleen A. Kelly, Sandi L. Pruitt, Joanne Wolfe, Kira Bona, Puja J. Umaretiya   +13 more
wiley   +1 more source

Demystifying Arrow of Time

SSRN Electronic Journal
Scientific discussions of the arrow of time often get quite confusing due to highly complex systems they deal with. Popular literature then often coveys messages that tend to get lost in translation. The purpose of this note is to demystify the arrow of time by stripping off the unnecessary complexities and thereby simplifying the discussion.
openaire   +2 more sources

Stochasticity, decoherence and an arrow of time from the discretization of time?

, 2005
Certain intriguing consequences of the discreteness of time on the time evolution of dynamical systems are discussed. In the discrete-time classical mechanics proposed here, there is an {\it arrow of time} that follows from the fact that the replacement ...
A Schmidt, C Jaroszkiewicz, D Giulini, H Bondi, H Yamamoto, J A Cadzow, J C Jackson, J S Bell, L Cohen, L Cohen, M Bojowald, M Bojowald, M. C. Valsakumar, T Carleman, T D Lee, T D Lee, U Danielsson, W H Zurek, Y Katayama   +18 more
core   +1 more source

Financial Burden Associated With Hospitalisation Among Families of Childhood Brain Tumours in Australia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Families of children with cancer experience significant financial strain, even with universal healthcare. Indirect costs, such as productivity losses and non‐medical expenses, are rarely included in economic evaluations, and little is known about how effectively financial aid programmes alleviate this burden. Childhood brain tumours
Megumi Lim, Natalie Bradford, David Brain, Sameera Senanayake, Sanjeewa Kularatna, Kate Young, Christine Cashion, Tim Hassall, Susanna Cramb   +8 more
wiley   +1 more source

The Second Law of Thermodynamics as a Force Law

Entropy, 2018
The second law of thermodynamics states the increase of entropy, Δ S > 0 , for real processes from state A to state B at constant energy from chemistry over biological life and engines to cosmic events.
Jürgen Schlitter
doaj   +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

Cosmological Time, Entropy and Infinity

Entropy, 2017
Time is a parameter playing a central role in our most fundamental modelling of natural laws. Relativity theory shows that the comparison of times measured by different clocks depends on their relative motion and on the strength of the gravitational ...
Clémentine Hauret, Pierre Magain, Judith Biernaux   +2 more
doaj   +1 more source

How can we learn what attention is? Response gating via multiple direct routes kept in check by inhibitory control processes

Open Psychology, 2020
To explore the time course of space- and object-based attentional selection processes I analysed the shapes of the response time (RT) and accuracy distributions of left/right arrow identification responses in the two-rectangle paradigm.
Panis Sven
doaj   +1 more source

Arrow of time: a physical concept with philosophical roots

International Journal of Fundamental Physical Sciences, 2019
The notion of “time” is one of the key concepts in physics and philosophy and it “occupies a key role to bridge domains of experience belonging to the spiritual and physical sides of our nature” as says Sir Arthur Eddington.
Behrooz Ebadi
semanticscholar   +1 more source