Results 71 to 80 of about 7,153,426 (306)

Characteristic energy factors for energy sink problem of the ideal fluid cavity annihilation

open access: yesBaozha yu Chongji
In physics, a “source” denotes the origin of matter or energy, while a “sink” refers to the terminal point of matter or energy. By analogizing with the energy source problem in underground explosions, this study proposes an energy sink problem for ideal ...
Haoxiang CHEN   +3 more
doaj   +1 more source

Individual strategy ratings improve the control for task difficulty effects in arithmetic problem solving paradigms

open access: yesFrontiers in Psychology, 2015
Mental arithmetic is a powerful paradigm to study problem solving using neuroimaging methods. However, the evaluation of task complexity varies significantly across neuroimaging studies.
Nadja eTschentscher, Olaf eHauk
doaj   +1 more source

Non Parametric Confidence Intervals for Receiver Operating Characteristic Curves [PDF]

open access: yes
We study methods for constructing confidence intervals, and confidence bands, for estimators of receiver operating characteristics. Particular emphasis is placed on the way in which smoothing should be implemented, when estimating either the ...
Rob J. Hyndman, Yanan Fan, Peter G. Hall
core  

The crystal structure of the Borrelia burgdorferi nicotinamidase BBE22 resolves a long‐standing annotation error

open access: yesFEBS Open Bio, EarlyView.
The crystal structure of Borrelia burgdorferi nicotinamidase (PncA/BBE22) reveals the correct full‐length protein initiated from a non‐canonical AUU start codon. The structure validates previous biochemical findings and resolves a long‐standing annotation error, demonstrating that the truncated database sequence is structurally incompatible with the ...
Kalvis Brangulis
wiley   +1 more source

Characteristic function approach to the sum of stochastic variables [PDF]

open access: yes
This paper puts forward a technique based on the characteristic function to tackle the problem of the sum of stochastic variables. We consider independent processes whose reduced variables are identically distributed, including those that violate the ...
Gleria, Iram   +3 more
core  

Problem gambling services

open access: yes, 2020
Title from PDF caption (viewed on November 12, 2020).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program.

core  

Pathways and pitfalls: a qualitative study of student experiences in biomedical science education

open access: yesFEBS Open Bio, EarlyView.
Biomedical science students from underrepresented backgrounds face barriers including financial strain, disrupted laboratory access and cultural exclusion. Peer networks provide vital support when institutional systems are difficult to navigate. To create inclusive learning environments and achieve academic success, educators should blend active, hands‐
Olivia J. Russell   +8 more
wiley   +1 more source

On the solvability of the Sturm – Liouville problem, nonlinear in the spectral parameter

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки
Background. The paper studies the solvability of the Sturm-Liouville problem, which is nonlinear in the spectral parameter. The problem is studied on a segment with boundary conditions of the third kind. Materials and methods.
G.V. Chalyshov
doaj   +1 more source

Oscillatory solutions of the Cauchy problem for linear differential equations

open access: yesElectronic Journal of Differential Equations, 2015
We consider the Cauchy problem for second and third order linear differential equations with constant complex coefficients. We describe necessary and sufficient conditions on the data for the existence of oscillatory solutions. It is known that in the
Gro Hovhannisyan, Oliver Ruff
doaj  

Generalizations of the Goursat and Darboux – Goursat – Baudot problems in spaces of generalized functions of infinite order [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
The article investigates the fundamental continuation problem for generalized solutions of systems of linear differential equations with constant coefficients P(D)u=0 in a multidimensional parallelepiped $\pi \subset \mathbb{R}^n$.
Berdimuratov, Amangeldi Muchtarovich
doaj   +1 more source

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