| 1. |
- Menkveld, Albert J., et al.
(författare)
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Nonstandard Errors
- 2024
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Ingår i: JOURNAL OF FINANCE. - : Wiley-Blackwell. - 0022-1082 .- 1540-6261. ; 79:3, s. 2339-2390
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Tidskriftsartikel (refereegranskat)abstract
- In statistics, samples are drawn from a population in a data-generating process (DGP). Standard errors measure the uncertainty in estimates of population parameters. In science, evidence is generated to test hypotheses in an evidence-generating process (EGP). We claim that EGP variation across researchers adds uncertainty-nonstandard errors (NSEs). We study NSEs by letting 164 teams test the same hypotheses on the same data. NSEs turn out to be sizable, but smaller for more reproducible or higher rated research. Adding peer-review stages reduces NSEs. We further find that this type of uncertainty is underestimated by participants.
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| 2. |
- Abrikosov, IA, et al.
(författare)
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Magnetically induced crystal structure and phase stability in Fe1-cCoc
- 1996
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Ingår i: PHYSICAL REVIEW B-CONDENSED MATTER. - : AMER INST PHYSICS. - 0163-1829. ; 54:5, s. 3380-3384
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We present an ab initio determination of the crystallographic phase stability of Fe-Co alloys as a function of concentration, using the coherent potential approximation. A bcc --> hcp phase transition is found at a concentration of 85 at.% of Co, in good
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| 3. |
- Landa, A., et al.
(författare)
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Density-functional study of Zr-based actinide alloys
- 2009
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Ingår i: Journal of Nuclear Materials. - : Elsevier BV. - 0022-3115 .- 1873-4820. ; 385:1, s. 68-71
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Tidskriftsartikel (refereegranskat)abstract
- Density-functional formalism is applied to study the phase equilibria in the U-Zr system. The obtained ground-state properties of the gamma (bcc) and delta (02) phases are in good agreement with experimental data. The decomposition curve for the gamma-based U-Zr solutions is calculated. We argue that stabilization of the delta-UZr2 phase relative to the alpha-Zr (hcp) structure is due to an increase of the Zr d-band occupancy that occurs when U is alloyed with Zr.
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| 4. |
- Landa, A., et al.
(författare)
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Density-functional study of Zr-based actinide alloys : 2. U-Pu-Zr system
- 2009
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Ingår i: Journal of Nuclear Materials. - : Elsevier BV. - 0022-3115 .- 1873-4820. ; 393:1, s. 141-145
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Tidskriftsartikel (refereegranskat)abstract
- Density-functional theory, previously used to describe phase equilibria in the U-Zr alloys [A. Landa, P. Soderlind, P.E.A. Turchi, L. Vitos, A. Ruban, J. Nucl. Mater. 385 (2009) 68[, is applied to study ground-state properties of the bcc U-Pu-Zr solid solutions. Calculated heats of formation of the Pu-U and Pu-Zr alloys are in a good agreement with CALPHAD assessments. We found that account for spin-orbit coupling is important for successful description of Pu-containing alloys.
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| 5. |
- ABRIKOSOV, IA, et al.
(författare)
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THEORETICAL ASPECTS OF THE FECNI1-C INVAR ALLOY
- 1995
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Ingår i: PHYSICAL REVIEW B-CONDENSED MATTER. - : AMER INST PHYSICS. - 0163-1829. ; 51:2, s. 1058-1063
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 6. |
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| 7. |
- ERIKSSON, O, et al.
(författare)
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BULK AND SURFACE MAGNETISM AND INTERPLANAR SPACINGS IN GD FROM FIRST-PRINCIPLES CALCULATIONS
- 1995
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Ingår i: PHYSICAL REVIEW B-CONDENSED MATTER. - : AMER INST PHYSICS. - 0163-1829. ; 52:6, s. 4420-4426
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The magnetic ground state of bulk Gd and surface Gd is investigated by means of first-principles calculations based on the local-spin-density approximation. Good agreement between theory and experiment is found for all calculated bulk properties only if w
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| 8. |
- JOHANSSON, B, et al.
(författare)
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MAGNETIC EFFECTS ON STRUCTURAL, ELASTIC AND SURFACE-PROPERTIES OF THE 3D FERROMAGNETS
- 1995
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Ingår i: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - : ELSEVIER SCIENCE BV. - 0304-8853. ; 140, s. 29-33
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Assuming saturated ferromagnetism, the anomalous crystal structures of the magnetic 3d transition elements Fe, Co and Ni can be explained from simple band filling arguments. The exceptional elastic properties of Fe and Co are well described by full potent
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| 9. |
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| 10. |
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