Results 31 to 40 of about 1,835,390 (328)

The Thermodynamical Arrow and the Historical Arrow; Are They Equivalent? [PDF]

open access: yesEntropy, 2017
In this paper, the relationship between the thermodynamic and historical arrows of time is studied. In the context of a simple combinatorial model, their definitions are made more precise and in particular strong versions (which are not compatible with time symmetric microscopic laws) and weak versions (which can be compatible with time symmetric ...
openaire   +2 more sources

Pathophysiological, Neuropsychological, and Psychosocial Influences on Neurological and Neuropsychiatric Symptoms of Post-Acute COVID-19 Syndrome: Impacts on Recovery and Symptom Persistence

open access: yesBiomedicines
Although the impact of post-acute COVID-19 syndrome (PACS) on patients and public health is undeniably significant, its etiology remains largely unclear. Much research has been conducted on the pathophysiology, shedding light on various aspects; however,
Alex Malioukis   +3 more
doaj   +1 more source

The Importance of Boundary Conditions in Quantum Mechanics [PDF]

open access: yes, 2003
We discuss the role of boundary conditions in determining the physical content of the solutions of the Schrodinger equation. We study the standing-wave, the ``in,'' the ``out,'' and the purely outgoing boundary conditions. As well, we rephrase Feynman's $
A. F. J. Siegert   +16 more
core   +3 more sources

Work, Energy, and Efficiency of a Recurve Bow

open access: yesInternational Scholastic Journal of Science, 2023
The shooting of a recurve bow was varied in two ways, changing draw distance and string length, to determine the relationship between work done in drawing the bowstring and the resulting kinetic energy of the arrow.
Sedthasard Kasetcharoenkit   +1 more
doaj  

a-Logic With Arrows

open access: yesElectronic Notes in Theoretical Computer Science, 2008
AbstractWe present an extension of first-order predicate logic with a novel predicate ‘at t’ meaning intuitively “this term is a variable symbol”. We give simple sequent proof-rules for it, we demonstrate cut-elimination for the resulting logic, and we give a semantics for which the logic is sound and complete.
Murdoch J. Gabbay, Michael Gabbay
openaire   +2 more sources

Assessing the Agreement Between Diffusion Tension Imaging (DTI) and T2-Weighted MRI Sequence for Biometry of the Fetal Corpus Callosum

open access: yesDiagnostics
Background/Objectives: Little is known about the advantages of Diffusion Tensor Imaging (DTI) when evaluating the fetal corpus callosum (CC), a sensitive indicator for normal brain development.
Liel N. Cohn   +6 more
doaj   +1 more source

Discursive framework for a multi-disease digital health passport in Africa: a perspective

open access: yesGlobalization and Health
Africa’s dual burden of rising incidence of infectious diseases and increasing prevalence of non-communicable diseases (NCDs), such as cardiovascular diseases and diabetes, demands innovative approaches to disease surveillance, response, and cross-border
Gideon Towett   +3 more
doaj   +1 more source

Arrow Wounds [PDF]

open access: yesScientific American, 1881
n ...
openaire   +3 more sources

Effects of chronic browsing on life‐history traits of an irruptive large herbivore population

open access: yesPopulation Ecology, EarlyView.
This study aimed to determine the relationship between diet quality, body mass, and size (hind foot length), and female reproduction and sought to identify the mechanism by which high density under severe food limitations is maintained. Our results demonstrated that sika deer introduced to Nakanoshima Island have maintained high densities through high ...
Koichi Kaji   +9 more
wiley   +1 more source

Konya Gevale Kalesi Kazılarında Bulunan Temrenlerin Arkeometalurjik İncelemeleri

open access: yesTurcology Research
Türkiye’de Orta Çağ kazılarında çıkarılan ve Orta Çağ’a ait temrenler üzerine çalışmalar oldukça sınırlıdır. Özellikle Orta Çağ’da, temrenlerin bilinmeyen yönleri bulunmaktadır.
Musafa Kocabaş   +2 more
doaj   +1 more source

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