Results 21 to 30 of about 2,392,265 (312)

Binomial level densities [PDF]

Physical Review C, 2001
It is shown that nuclear level densities in a finite space are described by a continuous binomial function, determined by the first three moments of the Hamiltonian, and the dimensionality of the underlying vector space. Experimental values for $^{55}$Mn, $^{56}$Fe, and $^{60}$Ni are very well reproduced by the binomial form, which turns out to be ...
openaire   +3 more sources

No experimental evidence for local competition in the nestling phase as a driving force for density-dependent avian clutch size [PDF]

, 2009
1. In birds, local competition for food between pairs during the nestling phase may affect nestling growth and survival. A decrease in clutch size with an increase in breeding density could be an adaptive response to this competition.
Nicolaus, Marion, Tinbergen, Joost M., Both, C., Nicolaus, M., Edelaar, Pim,, Tinbergen, Joost M.,, Nicolaus, Marion,, Edelaar, P., Ubels, Richard, Tinbergen, J., Both, Christiaan, Both, Christiaan,, Edelaar, Pim, Ubels, R., Ubels, Richard,   +14 more
core   +1 more source

Building Density Level of Urban Slum Area in Jakarta

Geosfera Indonesia, 2020
Currently, the number of urban residents is increasing and some of the urban population live in slum areas. Therefore, identifying the characteristics of slum areas has become crucial.
Tenty Melvianti Legarias, Renny Nurhasana, Edy Irwansyah   +2 more
doaj   +1 more source

Estimating the functional form for the density dependence from life history data [PDF]

, 2008
Two contrasting approaches to the analysis of population dynamics are currently popular: demographic approaches where the associations between demographic rates and statistics summarizing the population dynamics are identified; and time series approaches
Tavecchia, G., Pelletier, F., Coulson, Timothy, Coulson, T, Pilkington, J.G., Stenseth, N. C., Stenseth, NC, Childs, DZ, Ezard, T. H. G., Clutton-Brock, TH, Ezard, T.H.G., Childs, D.Z., Pemberton, J. M., Clutton-Brock, T.H., Childs, D. Z., Ezard, TH, Ezard, THG, Crawley, M.J., Stenseth, N.C., Kruuk, LEB, Pilkington, J. G., Kruuk, L. E. B., Coulson, T., Kruuk, L.E.B., Pemberton, J.M., Crawley, MJ, Pilkington, JG, Pelletier, F, Clutton-Brock, T. H., Crawley, M. J., Pemberton, JM, Tavecchia, G, Kruuk, LE   +32 more
core   +1 more source

On Crowd Density Estimation for Surveillance [PDF]

, 2006
The goal of this work is to use computer vision to measure crowd density in outdoor scenes. Crowd density estimation is an important task in crowd monitoring. The assessment is carried out using images of a graduation scene which illustrated variation of
Rahmalan, Hidayah, M.S. Nixon, H. Rahmalan, Nixon, Mark S., Carter, John N., J.N. Carter   +5 more
core   +1 more source

for Ampere‐Level Current Density Hydrogen Evolution [PDF]

, 2023
To meet the requirements for industrial water splitting to generate hydrogen, it is urgent, but still quite challenging to develop highly active and stable electrocatalysts for large-current-density hydrogen evolution reaction (HER).
Zhang, Huaiyu, Zhu, Dongdong, Qiao, Man, Dongdong Zhu, Tang, Yujia, Bai, Yu, Xue Lu, Yan Zou, Yujia Tang, Liang Wang, Juhong Miao, Zou, Yan, Huaiyu Zhang, Miao, Juhong, Lu, Xue, Yu Bai, Man Qiao, Wang, Liang   +17 more
core   +1 more source

Stochastic estimation of nuclear level density in the nuclear shell model: An application to parity-dependent level density in 58Ni

Physics Letters B, 2016
We introduce a novel method to obtain level densities in large-scale shell-model calculations. Our method is a stochastic estimation of eigenvalue count based on a shifted Krylov-subspace method, which enables us to obtain level densities of huge ...
Noritaka Shimizu, Yutaka Utsuno, Yasunori Futamura, Tetsuya Sakurai, Takahiro Mizusaki, Takaharu Otsuka   +5 more
doaj   +1 more source

Level sets of density continuous functions [PDF]

Proceedings of the American Mathematical Society, 1992
A function f : R
Ciesielski, Krzysztof, Larson, Lee
openaire   +2 more sources

Nuclear level density and related physics

EPJ Web of Conferences, 2018
The knowledge of the level density as a function of excitation energy and nuclear spin is necessary for the description of nuclear reactions and in many applied areas.
Zelevinsky Vladimir, Karampagia Sofia
doaj   +1 more source

Boosting BOLD fMRI by K-Space density weighted echo planar imaging [PDF]

, 2013
Functional magnetic resonance imaging (fMRI) has become a powerful and influential method to non-invasively study neuronal brain activity. For this purpose, the blood oxygenation level-dependent (BOLD) effect is most widely used. T2* weighted echo planar
Andreas J Bartsch, Zeller, Mario, Nichols, Thomas, Hahn, Dietbert, Müller, Alexander, Mario Zeller, Herbert Köstler, Nichols, Thomas E., Thomas Nichols, Köstler, Herbert, Dietbert Hahn, Marcel Gutberlet, Alexander Müller, Gutberlet, Marcel, Bartsch, Andreas J.   +14 more
core   +1 more source