323,299 research outputs found
QUEELS-XPS: Software to calculate the energy loss processes in XPS and AES including the effects of the core hole.
No full textXPS spectra consist of the primary photo-excited core electrons, including processes such as lifetime broadening, spin-orbit coupling, and multiplet splitting. On top of this, there is a background of energy-loss structures caused by excitations due to the sudden creation of the static core hole and due to electron transport out of the surface (including bulk and surface effects). The corresponding energy-loss processes are usually denoted ‘‘intrinsic’’ and ‘‘extrinsic’’ excitations. The QUEELS-XPS software calculates these effects quantitatively by a dielectric response description. It also applies to AES. The only input in the software is the dielectric function expressed by the energy loss function (ELF). The ELF for various materials is available at:
Pauly, Nicolas, Yubero, Francisco, & Tougaard, Sven. (2022). ELF dielectric functions for various materials. (1.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6024064
The QUEELS-XPS software was first presented in the paper
Software package to calculate the effects of the core hole and surface excitations on XPS and AES
S. Tougaard and F. Yubero, Surface Interface Analysis 44, 1114-1118 (2012)
Note: The QUEELS-XPS software will be available here soon and can presently be downloaded at http://quases.com/products/queels-xps/
The QUEELS-XPS software is an extension of the QUEELS software which applies to EELS, REELS, AES, and XPS. QUEELS is presented in the paper "QUEELS: Software to calculate the energy loss processes in TEELS, REELS, XPS and AES including effects of the core hole"; by S. Tougaard, N. Pauly, F. Yubero, Surf. Interf Anal (2022) http://doi.org/10.1002/sia.7095. The QUEELS software can be downloaded here:
Tougaard, Sven, & Yubero, Francisco. (2022). QUEELS software for calculation of energy loss processes in TEELS, REELS, XPS, and AES including effects of the core hole (2.3). Zenodo. https://doi.org/10.5281/zenodo.6022426
Recent applications of QUEELS-XPS:
XPS primary excitation spectra of Zn 2p, Fe 2p, and Ce 3d from ZnO, α-Fe2O3, and CeO2
N. Pauly, F. Yubero, J.P. Espinós, S. Tougaard. Surface and Interface Analysis 51, 353-360 (2019) https://doi.org/10.1002/sia.6587
Quantitative analysis of Yb 4d photoelectron spectrum of metallic Yb
N. Pauly, F. Yubero, S. Tougaard, Surface and Interface Analysis 50, 1168-1173 (2018); https://doi.org/10.1002/sia.6402
Quantitative analysis of satellite structures in XPS spectra of gold and silver
N. Pauly, F. Yubero, S. Tougaard, Applied Surface Science 383, 317–323 (2016); http://dx.doi.org/10.1016/j.apsusc.2016.03.185
Quantitative analysis of Ni 2p photoemission in NiO and Ni diluted in a SiO2 matrix
N. Pauly, F. Yubero, F.J. García-García, S. Tougaard, Surf. Sci. 644, 46-52 (2016) http://dx.doi.org/10.1016/j.susc.2015.09.012
LMM Auger primary excitation spectra of copper
N. Pauly, S. Tougaard, F. Yubero, Surface Science 630, 294–299 (2014) http://dx.doi.org/10.1016/j.susc.2014.08.029
Modeling of X-ray photoelectron spectra: surface and core hole effects
N. Pauly, F. Yubero, S. Tougaard, Surface and Interface Analysis 46, 920-923 (2014) ; http://dx.doi.org/10.1002/sia.5372
Determination of the Cu 2p primary excitation spectra for Cu, Cu2O and CuO
N. Pauly, S. Tougaard, F. Yubero, Surface Science 620, 17-22 (2014); http://dx.doi.org/10.1016/j.susc.2013.10.009
Dielectric description of the angular dependence of the loss structure in core level photoemission
F. Yubero and S. Tougaard, J. Electron Spectroscopy and Related Phenomena 185 (2012) 552-5
QUEELS software for calculation of energy loss processes in TEELS, REELS, XPS, and AES including effects of the core hole
No full textQUEELS is for calculation of energy loss processes in TEELS, REELS, XPS, and AES including effects of the core hole
It is based on a dielectric response description of the interaction of the moving electron with the electrons of the solid and includes the boundary effects imposed by the particular experimental situation. Its validity has been verified in several experiments.
The QUEELS software can be downloaded at: doi: 10.5281/zenodo.6022426
QUEELS is free to use for non-commercial applications.
The software is based on theory published in the papers:
1. J. Lindhard, Kgl Danske Vid Selsk Mat-Fys Medd 28:8 (1954)
2. R H. Ritchie, Phys. Rev. 106, p. 874 (1957)
3. F. Yubero and S. Tougaard, Phys. Rev. B46, p. 2486, (1992)
4. F. Yubero, JM Sanz, B. Ramskov, S. Tougaard, Phys. Rev. B53, p. 9719,(1996)
5. AC. Simonsen, F. Yubero, S. Tougaard, Phys. Rev. B56, p. 1612, (1997)
A brief summary of the theory behind QUEELS and discussion of its practical application is published in the paper which can be downloaded here: :https://doi-org.proxy1-bib.sdu.dk/10.1002/sia.7095.
S. Tougaard, N. Pauly, F. Yubero, QUEELS: Software to calculate the energy loss processes in TEELS, REELS, XPS, and AES including effects of the core hole, Surf. Interf. Anal. 54, p. 820-833 (2022).
A brief users guide is available in the supplementary material to this paper.
The only input needed in QUEELS is the dielectric function of the material expressed by the so called energy loss function (ELF) as a sum of oscillators.
You may get acquainted with the software by reproducing the spectra shown in the guide and the abovementioned paper for Au and Si.
To do this, you first copy the files ELF_Au.txt and ELF_Si.txt into a folder e.g. C:\ELF\ELF_Au.txt. Then read the file with the "Set Material Parameters" menu in QUEELS.
ELF for a range of other materials can be found in:
Pauly, Nicolas, Yubero, Francisco, & Tougaard, Sven. (2022). ELF dielectric functions for various materials. (1.0) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.6024064
Copyright (c) 2001-2022 All rights reserved
QUEELS software is developed by Sven Tougaard and Francisco Yubero
Sven Tougaard, Dept of Physics, Chemistry, and Pharmacy, University of Southern Denmark, DK-5230 Odense M, Denmark
Francisco Yubero, Inst. de Ciencia de Materiales de Sevilla, Isla de la Cartuja, E-41092 Sevilla, Spain
(e-mails: [email protected] and [email protected]
Retratando el Madrid de la Guerra Civil.Santos Yubero en el Archivo Regional de la Comunidad de Madrid
No full textThe half a million photographs taken between the 20’s and the 70’s by Santos Yubero and kept in the “Archivo Regional de la Comunidad de Madrid” allow us to approach the visual memory of the city of Madrid during the 20th century. This paper presents a study of the photographs that profile Madrid during the Spanish Civil War (1936-1939) in the three different spaces opened in the capital after the uprising of July: the front, the rear and the military rear. After presenting the results of the catalogued photographs (taking into account the captured matter), the effect of the work of Santos Yubero during the Spanish Civil War will be analyzed. To do so, we will study the photographs published in the six different newspapers where Santos Yubero worked during the conflict: ABC (Madrid edition), Ahora, Crónica, La Libertad, La Voz and Mundo Gráfico. This work was made both alone and signing with the photographic agency that Santos Yubero created with Benítez-Casaux brothers. Finally, we will reflect on some characteristics that the photographs of Yubero have as documents to approach the Spanish Civil War.Trabajar con el fondo de Santos Yubero que se conserva en el Archivo Regional de la Comunidad de Madrid es acercarse a la memoria visual de la ciudad de Madrid del siglo XX a través de medio millón de fotografías tomadas entre los años 20 y 70. El artículo que se presenta es un estudio de aquellas instantáneas que retratan la capital de España durante la Guerra Civil Española (1936-1939) en los tres espacios que se abrieron en la capital tras la sublevación de julio: frente, retaguardia y retaguardia militar. Tras mostrar los resultados de la catalogación de las fotografías (catalogación que se ha realizado priorizando al asunto retratado), analizaremos la repercusión que tuvo el trabajo de Santos Yubero durante este período. Para ello estudiaremos las instantáneas publicadas en los seis periódicos y diarios en los que trabajó durante el conflicto: ABC (edición Madrid), Ahora, Crónica, La Libertad, La Voz y Mundo Gráfico, tanto en solitario como firmando con un sello colaborativo junto a los hermanos Benítez Casaux. Finalmente, reflexionaremos sobre algunas características que tienen las fotografías de Yubero como documentos para aproximarse al acontecimiento que puede considerarse eje vertebrador del siglo pasado en España
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Author's address:
No full textCan archives of audiovisual TV interviews be used to make authors more visible to students, and thereby reduce the learning gap between native and non-native language speakers in college classes? We examined students in a college course who learned about one scholar's ideas through watching an audiovisual TV interview (i.e., visible author format) and about another scholar's ideas through reading a formal text description (i.e., invisible author format). For the invisible author, native language speakers scored significantly higher than the non-native language speakers on a corresponding exam question (i.e., a cognitive measure), generated more words on the exam question (i.e., a motivational measure), and mentioned the author's name more often in answering the exam question (i.e., an affective measure). For the visible author, the groups did not differ on any of these measures. These findings provide evidence for the idea that making the author visible through audiovisual TV interviews can eliminate the learning gap between native and non-native language speakers. 3 Universities around the world serve students who are non-native speakers of th
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
- …
