510 research outputs found
Credit where credit is due: research parasites and tackling misconceptions about academic data sharing
Benedikt Fecher and Gert G. Wagner look at a recent editorial which faced considerable criticism for typecasting researchers who use or build on previous datasets as “research parasites”. They argue that the authors appear to miss the point, not only of data sharing, but of scientific research more broadly. But as problematic as the editorial may be, it points to a wider issue for the scientific community, which is adequate mechanisms for credit and contribution. We could be doing more to provide proper recognition for researchers’ data sharing, data production and data curation efforts
Flipping journals to open: Rethinking publishing infrastructure in light of Lingua/Glossa case
The resignation of the editorial board of an Elsevier-owned linguistics journal and its open access reorganization could get the ball rolling for other journals to follow suit. Benedikt Fecher and Gert Wagner argue this case is a reminder that open access means more than just providing access to an article; it means rethinking the whole process of publishing. Open access also raises important questions about who owns the critical information infrastructure for online publishing
Flipping journals to open: Rethinking publishing infrastructure
The resignation of the editorial board of an Elsevier-owned linguistics journal and its open access reorganization could get the ball rolling for other journals to follow suit. This case is a reminder that open access means more than just providing access to an article; it means rethinking the whole process of publishing. Open access also raises important questions about who owns the critical information infrastructure for online publishing
Electronic Structure, Localization and Spin-State Transition in Cu-substituted FeSe: FeCuSe
We report density functional studies of the FeCuSe alloy done
using supercell and coherent potential approximation methods. Magnetic behavior
was investigated using the disordered local moment approach. We find that Cu
occurs in a nominal configuration and is highly disruptive to the
electronic structure of the Fe sheets. This would be consistent with a metal
insulator transition due to Anderson localization. We further find a strong
cross over from a weak moment itinerant system to a local moment magnet at . We associate this with the experimentally observed jump near
this concentration. Our results are consistent with the characterization of
this concentration dependent jump as a transition to a spin-glass
Communication on the science-policy interface: An overview of conceptual models
This article focuses on scholarly discourse on the science-policy interface, and in particular on questions regarding how this discourse can be understood in the course of history and which lessons we can learn. We aim to structure the discourse, show kinships of different concepts, and contextualize these concepts. For the twentieth century we identify three major phases that describe interactions on the science policy interface: the “linear phase” (1960s–1970s) when science informed policy-making in a unidirectional manner, the “interactive phase” (1970–2000s) when both sides found themselves in a continuous interaction, and the “embedded phase” (starting from the 2000s) when citizens’ voices come to be involved within this dialogue more explicitly. We show that the communicative relationship between science and policy-making has become more complex over time with an increasing number of actors involved. We argue that better skill-building and education can help to improve communication within the science-policy interface
Properties of the quaternary half-metal-type Heusler alloy CoMnFeSi
This work reports on the bulk properties of the quaternary Heusler alloy
CoMnFeSi with the Fe concentration . All samples, which
were prepared by arc melting, exhibit long range order over the complete
range of Fe concentration. Structural and magnetic properties of
CoMnFeSi Heusler alloys were investigated by means of X-ray
diffraction, high and low temperature magnetometry, M{\"o\ss}bauer
spectroscopy, and differential scanning calorimetry. The electronic structure
was explored by means of high energy photo emission spectroscopy at about 8 keV
photon energy. This ensures true bulk sensitivity of the measurements. The
magnetization of the Fe doped Heusler alloys is in agreement with the values of
the magnetic moments expected for a Slater-Pauling like behavior of
half-metallic ferromagnets. The experimental findings are discussed on the hand
of self-consistent calculations of the electronic and magnetic structure. To
achieve good agreement with experiment, the calculations indicate that on-site
electron-electron correlation must be taken into account, even at low Fe
concentration. The present investigation focuses on searching for the
quaternary compound where the half-metallic behavior is stable against outside
influences. Overall, the results suggest that the best candidate may be found
at an iron concentration of about 50%.Comment: 26 pages, 9 figures Phys. Rev. B accepte
Electronic structure and spectroscopy of the quaternary Heusler alloy CoCrFeAl
Quaternary Heusler alloys CoCrFeAl with varying Cr to Fe
ratio were investigated experimentally and theoretically. The electronic
structure and spectroscopic properties were calculated using the full
relativistic Korringa-Kohn-Rostocker method with coherent potential
approximation to account for the random distribution of Cr and Fe atoms as well
as random disorder. Magnetic effects are included by the use of spin dependent
potentials in the local spin density approximation.
Magnetic circular dichroism in X-ray absorption was measured at the
edges of Co, Fe, and Cr of the pure compounds and the alloy in order to
determine element specific magnetic moments. Calculations and measurements show
an increase of the magnetic moments with increasing iron content. Resonant
(560eV - 800eV) soft X-ray as well as high resolution - high energy (keV) hard X-ray photo emission was used to probe the density of the
occupied states in CoCrFeAl.Comment: J.Phys.D_Appl.Phys. accepte
Rather than simply moving from “paying to read” to “paying to publish”, it’s time for a European Open Access Platform
Open access is here to stay. Massive support from academic institutions and research funders makes it the likeliest future scenario for scholarly publications, leaving only the question of how the transition is made. Benedikt Fecher, Sascha Friesike, Isabella Peters and Gert G. Wagner argue that current policy efforts do not go far enough. Scholarly publishing in a digital age would benefit if European research infrastructure providers pooled their collective efforts into a public publication infrastructure. This post makes the case for a European Open Access Platform
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