1,721,115 research outputs found
ExoMol line lists - III. An improved hot rotation-vibration line list for HCN and HNC
No full textA revised rotation-vibration line list for the combined hydrogen cyanide (HCN)/hydrogen isocyanide (HNC) system is presented. The line list uses ab initio transition intensities calculated previously and extensive data sets of recently measured experimental energy levels. The resulting line list has significantly more accurate wavelengths than previous ones for these systems. An improved value for the separation between HCN and HNC is adopted, leading to an approximately 25 per cent lower predicted thermal population of HNC as a function of temperature in the key 2000 to 3000 K region. Temperature-dependent partition functions and equilibrium constants are presented. The line lists are validated by comparison with laboratory spectra and are presented in full as supplementary data to the article and at www.exomol.com
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The Zak dataset for 14C16O2
No full textThe dataset is an archive of ExoMol page, https://exomol.com/data/molecules/CO2/14C-16O2/Zak.Please check the reference details according to the following description or directly from the website. NB: The html description skips data which are not included in the current version for the purpose of simplicity. Please check CO2_14C16O2_Zak.md for detailed information. Definitions file 14C-16O2__Zak.def[4.91 KB] References: 1. Tennyson, J., Yurchenko, S. N., Al-Refaie, A. F., Clark, V. H. J., Chubb, K. L., Conway, E. K., Dewan, A., Gorman, M. N., Hill, C., Lynas-Gray, A. E., Mellor, T., McKemmish, L. K., Owens, A., Polyansky, O. L., Semenov, M., Somogyi, W., Tinetti, G., Upadhyay, A., Waldmann, I., Wang, Y., Wright, S., Yurchenko, O. P., "The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres", J. Quant. Spectrosc. Rad. Transf., 255, 107228 (2020). [https://doi.org/10.1016/j.jqsrt.2020.107228] Spectroscopic Model https://exomol.com/models/CO2/14C-16O2/Zak/ Zak: line list A room temperature line list for CO2 in the HITRAN format calculated using the AMES potential energy surface and an accurate ab initio dipole moment surface. 14C-16O2__Zak.par[2.62 MB]A room temperature line list for the isotopologue of (14C)(16O)2in the HITRAN format. References: 1. Zak, E. J., Tennyson, J., Polyansky, O. L., Lodi, L., Tashkun, S. A., Perevalov, V. I., "Room temperature line lists for CO2 symmetric isotopologues with ab initio computed intensities", J. Quant. Spectrosc. Radiat. Transf. 177, 31-42 (2016). [http://doi.org/10.1016/j.jqsrt.2015.12.022][16ZaTePo.CO2] {"references": ["Tennyson, J., Yurchenko, S. N., Al-Refaie, A. F., Clark, V. H. J., Chubb, K. L., Conway, E. K., Dewan, A., Gorman, M. N., Hill, C., Lynas-Gray, A. E., Mellor, T., McKemmish, L. K., Owens, A., Polyansky, O. L., Semenov, M., Somogyi, W., Tinetti, G., Upadhyay, A., Waldmann, I., Wang, Y., Wright, S., Yurchenko, O. P., \"The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres\", J. Quant. Spectrosc. Rad. Transf., 255, 107228 (2020). \[https://doi.org/10.1016/j.jqsrt.2020.107228](https://doi.org/10.1016/j.jqsrt.2020.107228)\", "Zak, E. J., Tennyson, J., Polyansky, O. L., Lodi, L., Tashkun, S. A., Perevalov, V. I., \"Room temperature line lists for CO2 symmetric isotopologues with ab initio computed intensities\", J. Quant. Spectrosc. Radiat. Transf. 177, 31-42 (2016). [http://doi.org/10.1016/j.jqsrt.2015.12.022][16ZaTePo.CO2]"]
The Zak dataset for 13C18O2
No full textThe dataset is an archive of ExoMol page, https://exomol.com/data/molecules/CO2/13C-18O2/Zak.Please check the reference details according to the following description or directly from the website. NB: The html description skips data which are not included in the current version for the purpose of simplicity. Please check CO2_13C18O2_Zak.md for detailed information. Definitions file 13C-18O2__Zak.def[4.91 KB] References: 1. Tennyson, J., Yurchenko, S. N., Al-Refaie, A. F., Clark, V. H. J., Chubb, K. L., Conway, E. K., Dewan, A., Gorman, M. N., Hill, C., Lynas-Gray, A. E., Mellor, T., McKemmish, L. K., Owens, A., Polyansky, O. L., Semenov, M., Somogyi, W., Tinetti, G., Upadhyay, A., Waldmann, I., Wang, Y., Wright, S., Yurchenko, O. P., "The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres", J. Quant. Spectrosc. Rad. Transf., 255, 107228 (2020). [https://doi.org/10.1016/j.jqsrt.2020.107228] Spectroscopic Model https://exomol.com/models/CO2/13C-18O2/Zak/ Zak: line list A room temperature line list for CO2 in the HITRAN format calculated using the AMES potential energy surface and an accurate ab initio dipole moment surface. 13C-18O2__Zak.par[458.47 KB]A room temperature line list for the isotopologue of (13C)(18O)2in the HITRAN format. References: 1. Zak, E. J., Tennyson, J., Polyansky, O. L., Lodi, L., Tashkun, S. A., Perevalov, V. I., "Room temperature line lists for CO2 symmetric isotopologues with ab initio computed intensities", J. Quant. Spectrosc. Radiat. Transf. 177, 31-42 (2016). [http://doi.org/10.1016/j.jqsrt.2015.12.022][16ZaTePo.CO2] {"references": ["Tennyson, J., Yurchenko, S. N., Al-Refaie, A. F., Clark, V. H. J., Chubb, K. L., Conway, E. K., Dewan, A., Gorman, M. N., Hill, C., Lynas-Gray, A. E., Mellor, T., McKemmish, L. K., Owens, A., Polyansky, O. L., Semenov, M., Somogyi, W., Tinetti, G., Upadhyay, A., Waldmann, I., Wang, Y., Wright, S., Yurchenko, O. P., \"The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres\", J. Quant. Spectrosc. Rad. Transf., 255, 107228 (2020). \[https://doi.org/10.1016/j.jqsrt.2020.107228](https://doi.org/10.1016/j.jqsrt.2020.107228)\", "Zak, E. J., Tennyson, J., Polyansky, O. L., Lodi, L., Tashkun, S. A., Perevalov, V. I., \"Room temperature line lists for CO2 symmetric isotopologues with ab initio computed intensities\", J. Quant. Spectrosc. Radiat. Transf. 177, 31-42 (2016). [http://doi.org/10.1016/j.jqsrt.2015.12.022][16ZaTePo.CO2]"]
The Zak dataset for 16O12C18O
No full textThe dataset is an archive of ExoMol page, https://exomol.com/data/molecules/CO2/16O-12C-18O/Zak.Please check the reference details according to the following description or directly from the website. NB: The html description skips data which are not included in the current version for the purpose of simplicity. Please check CO2_16O12C18O_Zak.md for detailed information. Definitions file 16O-12C-18O__Zak.def[4.45 KB] References: 1. Tennyson, J., Yurchenko, S. N., Al-Refaie, A. F., Clark, V. H. J., Chubb, K. L., Conway, E. K., Dewan, A., Gorman, M. N., Hill, C., Lynas-Gray, A. E., Mellor, T., McKemmish, L. K., Owens, A., Polyansky, O. L., Semenov, M., Somogyi, W., Tinetti, G., Upadhyay, A., Waldmann, I., Wang, Y., Wright, S., Yurchenko, O. P., "The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres", J. Quant. Spectrosc. Rad. Transf., 255, 107228 (2020). [https://doi.org/10.1016/j.jqsrt.2020.107228] Spectroscopic Model https://exomol.com/models/CO2/16O-12C-18O/Zak/ Zak: line list A room temperature line list for CO2 in the HITRAN format calculated using the AMES potential energy surface and an accurate ab initio dipole moment surface. 16O-12C-18O__Zak.par[19.2 MB]A room temperature line list for (16O)(12C)(18O) in the HITRAN format. References: 1. Zak, E. J., Tennyson, J., Polyansky, O. L., Lodi, L., Tashkun, S. A., Perevalov, V. I., "Room temperature line lists for CO2 symmetric isotopologues with ab initio computed intensities", J. Quant. Spectrosc. Radiat. Transf. 177, 31-42 (2016). [http://doi.org/10.1016/j.jqsrt.2015.12.022][16ZaTePo.CO2] {"references": ["Tennyson, J., Yurchenko, S. N., Al-Refaie, A. F., Clark, V. H. J., Chubb, K. L., Conway, E. K., Dewan, A., Gorman, M. N., Hill, C., Lynas-Gray, A. E., Mellor, T., McKemmish, L. K., Owens, A., Polyansky, O. L., Semenov, M., Somogyi, W., Tinetti, G., Upadhyay, A., Waldmann, I., Wang, Y., Wright, S., Yurchenko, O. P., \"The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres\", J. Quant. Spectrosc. Rad. Transf., 255, 107228 (2020). \[https://doi.org/10.1016/j.jqsrt.2020.107228](https://doi.org/10.1016/j.jqsrt.2020.107228)\", "Zak, E. J., Tennyson, J., Polyansky, O. L., Lodi, L., Tashkun, S. A., Perevalov, V. I., \"Room temperature line lists for CO2 symmetric isotopologues with ab initio computed intensities\", J. Quant. Spectrosc. Radiat. Transf. 177, 31-42 (2016). [http://doi.org/10.1016/j.jqsrt.2015.12.022][16ZaTePo.CO2]"]
The Zak dataset for 16O13C17O
No full textThe dataset is an archive of ExoMol page, https://exomol.com/data/molecules/CO2/16O-13C-17O/Zak.Please check the reference details according to the following description or directly from the website. NB: The html description skips data which are not included in the current version for the purpose of simplicity. Please check CO2_16O13C17O_Zak.md for detailed information. Definitions file 16O-13C-17O__Zak.def[4.45 KB] References: 1. Tennyson, J., Yurchenko, S. N., Al-Refaie, A. F., Clark, V. H. J., Chubb, K. L., Conway, E. K., Dewan, A., Gorman, M. N., Hill, C., Lynas-Gray, A. E., Mellor, T., McKemmish, L. K., Owens, A., Polyansky, O. L., Semenov, M., Somogyi, W., Tinetti, G., Upadhyay, A., Waldmann, I., Wang, Y., Wright, S., Yurchenko, O. P., "The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres", J. Quant. Spectrosc. Rad. Transf., 255, 107228 (2020). [https://doi.org/10.1016/j.jqsrt.2020.107228] Spectroscopic Model https://exomol.com/models/CO2/16O-13C-17O/Zak/ Zak: line list A room temperature line list for CO2 in the HITRAN format calculated using the AMES potential energy surface and an accurate ab initio dipole moment surface. 16O-13C-17O__Zak.par[3.85 MB]A room temperature line list for (16O)(13C)(17O) in the HITRAN format. References: 1. Zak, E. J., Tennyson, J., Polyansky, O. L., Lodi, L., Tashkun, S. A., Perevalov, V. I., "Room temperature line lists for CO2 symmetric isotopologues with ab initio computed intensities", J. Quant. Spectrosc. Radiat. Transf. 177, 31-42 (2016). [http://doi.org/10.1016/j.jqsrt.2015.12.022][16ZaTePo.CO2] {"references": ["Tennyson, J., Yurchenko, S. N., Al-Refaie, A. F., Clark, V. H. J., Chubb, K. L., Conway, E. K., Dewan, A., Gorman, M. N., Hill, C., Lynas-Gray, A. E., Mellor, T., McKemmish, L. K., Owens, A., Polyansky, O. L., Semenov, M., Somogyi, W., Tinetti, G., Upadhyay, A., Waldmann, I., Wang, Y., Wright, S., Yurchenko, O. P., \"The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres\", J. Quant. Spectrosc. Rad. Transf., 255, 107228 (2020). \[https://doi.org/10.1016/j.jqsrt.2020.107228](https://doi.org/10.1016/j.jqsrt.2020.107228)\", "Zak, E. J., Tennyson, J., Polyansky, O. L., Lodi, L., Tashkun, S. A., Perevalov, V. I., \"Room temperature line lists for CO2 symmetric isotopologues with ab initio computed intensities\", J. Quant. Spectrosc. Radiat. Transf. 177, 31-42 (2016). [http://doi.org/10.1016/j.jqsrt.2015.12.022][16ZaTePo.CO2]"]
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
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