Results 11 to 20 of about 29,141 (271)
The thermal history of the intergalactic medium at $3.9 \leq z \leq 4.3$ [PDF]
, 2023 A new determination of the temperature of the intergalactic medium over $3.9 \leq z \leq 4.3$ is presented. We applied the curvature method on a sample of 10 high resolution quasar spectra from the Ultraviolet and Visual Echelle Spectrograph on the VLT/ESO. We measured the temperature at mean density by determining the temperature at the characteristic
Ondro, Tomáš, Gális, Rudolf
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Matching $\leq$ Hybrid $\leq$ Difference in Differences
Since LaLonde's (1986) seminal paper, there has been ongoing interest in estimating treatment effects using pre- and post-intervention data. Scholars have traditionally used experimental benchmarks to evaluate the accuracy of alternative econometric methods, including Matching, Difference-in-Differences (DID), and their hybrid forms (e.g., Heckman et ...
Park, Yechan, Sasaki, Yuya
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On the matrix equations U_iXV_j W_{i j} for 1 \leq i; j \leq k with i +j \leq k
The Electronic Journal of Linear Algebra, 2016 Conditions for the existence of a common solution X for the linear matrix equations U_iXV_j ô° W_{ij} for 1 \leq ô° i,j \leq ô° k with i\leq ô° j \leq ô° k, where the given matrices U_i,V_j,W_{ij} and the unknown matrix X have suitable dimensions, are derived.
van der Woude, Jacob
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Tully-Fisher Relation of Late-type Galaxies at $0.6 \leq z \leq 2.5$ [PDF]
We present a study of the stellar and baryonic Tully-Fisher relation within the redshift range of $0.6 \leq z \leq 2.5$ utilizing observations of \sfgs. This dataset, as explored in \citet{GS23}, comprises of disk-like galaxies spanning a stellar mass range of $8.89 \leq \log(M_{star} \ [\mathrm{M_\odot}]) \leq 11.5$, baryonic mass range of $9.0 \leq ...
Sharma, Gauri +3 more
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The UK Aircraft Noise Index Study: 20 Years on. [PDF]
, 2004 In the early 1980s the UK Department of Transport (now the Department for Transport: DfT is used here to cover all its incarnations) commissioned a study to determine what index should be used to assess aircraft noise disturbance near major airports ...
Brooker, Peter
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Construction of spectral libraries of star-forming galaxies at $0.3\leq z \leq 2.5$
, 2023 Spectral energy distribution (SED) models of galaxies at $0.3\leq z \leq 2.5$ were constructed to be processed by the Euclid spectroscopic channel simulator in order to investigate the \Euclid Near-Infrared Spectrometer and Photometer (NISP) capabilities.
Gabarra, Louis
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MUDANÇAS PALEO-HIDROLÓGICAS NA PLANÍCIE DO RIO PARAGUAI, QUATERNÁRIO DO PANTANAL
Revista Brasileira de Geomorfologia, 2014 O Paraguai é o rio-tronco do trato de sistemas deposicionais do Pantanal. Com base em dados de sensores remotos e verificação de campo, foi realizado mapeamento geomorfológico da planície do rio Paraguai no trecho entre as confluências dos rios Cuiabá e ...
Hudson de Azevedo Macedo +5 more
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On the inversion number of oriented graphs [PDF]
Discrete Mathematics & Theoretical Computer Science, 2022 Let $D$ be an oriented graph. The inversion of a set $X$ of vertices in $D$ consists in reversing the direction of all arcs with both ends in $X$. The inversion number of $D$, denoted by ${\rm inv}(D)$, is the minimum number of inversions needed to make $
Jørgen Bang-Jensen +2 more
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Edge Disjoint Hamilton Cycles in Knödel Graphs [PDF]
Discrete Mathematics & Theoretical Computer Science, 2016 The vertices of the Knödel graph $W_{\Delta, n}$ on $n \geq 2$ vertices, $n$ even, and of maximum degree $\Delta, 1 \leq \Delta \leq \lfloor log_2(n) \rfloor$, are the pairs $(i,j)$ with $i=1,2$ and $0 \leq j \leq \frac{n}{2} -1$.
Palanivel Subramania Nadar Paulraja +1 more
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, 2022 summary:Let ${\mathbb T}_n$ be the space of all trigonometric polynomials of degree not greater than $n$ with complex coefficients. Arestov extended the result of Bernstein and others and proved that $ \| (1/n) T'_n \|_{p} \leq \| T_n \|_{p}$ for $0 \leq
Zhao, Xingjun, Zhu, Laiyi
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