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Relationships between calciemia and calciuria and EEG and HRV parameters in patients with chronic pyelonephritis
Get PDFGozhenko Anatoliy I., Kushneruk Anatoliy V., Zukow Walery, Popovych Igor L. Relationships between calciemia and calciuria and EEG and HRV parameters in patients with chronic pyelonephritis. Journal of Education, Health and Sport. 2020;10(12):406-417. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2020.10.12.040
https://apcz.umk.pl/czasopisma/index.php/JEHS/article/view/JEHS.2020.10.12.040
https://zenodo.org/record/5514307
The journal has had 5 points in Ministry of Science and Higher Education parametric evaluation. § 8. 2) and § 12. 1. 2) 22.02.2019.
© The Authors 2020;
This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, PolandOpen Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium,provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 29.11.2020. Revised: 29.11.2020. Accepted: 28.12.2020.
RELATIONSHIPS BETWEEN CALCIEMIA AND CALCIURIA AND EEG AND HRV PARAMETERS IN PATIENTS WITH CHRONIC PYELONEPHRITIS
Anatoliy I. Gozhenko1, Anatoliy V. Kushneruk1,2, Walery Zukow3, Igor L. Popovych1,4
1Ukrainian Scientific Research Institute for Medicine of Transport, Odesa, Ukraine [email protected]
2National Medical University, Ivano-Frankivs’k, Ukraine [email protected]
3Nicolaus Copernicus University, Torun, Poland [email protected]
4Bohomolets’ OO Institute of Physiology of National Academy of Sciences, Kyїv, Ukraine [email protected]
Abstract
Background. This article launches a new project "Relationships between parameters of electrolytes exchange and EEG&HRV in people without kidney disease and patients with chronic pyelonephritis". Calcium was chosen as the first swallow. Material and methods. The object of observation were 48 males and 15 females 24-76 years old, who came to the spa Truskavets’ (Ukraine) for the treatment of chronic pyelonephritis in remission. We recorded simultaneosly EEG (“NeuroCom Standard”) and electrocardiogram ("CardioLab+HRV") in II lead to assess the parameters of HRV. Calcium and creatinine concentration was determined in blood plasma and daily urine. Results. The observed sample is characterized by moderate and mild expressed urinary syndrome, ie represents the urological contingent of the Truskavets’ spa. It was stated normal or moderately reduced plasma calcium levels in combination with a very wide range of calcium urinary excretion. A very strong canonical correlation was found between calciumemia and EEG/HRV parameters (r=0,910). The correlation with the parameters of the beta rhythm of the EEG and VLF/ULF components of the HRV is positive, while with the parameters of the alpha rhythm of the EEG is negative. The canonical correlation between calciumuria and EEG/HRV parameters is moderate (r=0,571). There was a positive correlation with other parameters of the beta rhythm of the EEG and a negative correlation with the parameters of the delta rhythm of the EEG and LF/VLF components of HRV. Conclusion. Parameters of calcium exchange and EEG/HRV are closely related, however the question of the causal nature of correlations remains open.
Key words: calciumemia, calciumuria, EEG, HRV, relationships, chronic pyelonephritis
Relationships between phosphatemia/phosphaturia and EEG/HRV parameters in patients with chronic pyelonephritis
Get PDFKushneruk Anatoliy, Gozhenko Anatoliy I., Zukow Walery, Popovych Igor L. Relationships between phosphatemia/phosphaturia and EEG/HRV parameters in patients with chronic pyelonephritis. Journal of Education, Health and Sport. 2021;11(2):335-346. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2021.11.02.031
https://apcz.umk.pl/czasopisma/index.php/JEHS/article/view/JEHS.2021.11.02.031
https://zenodo.org/record/5804948
The journal has had 5 points in Ministry of Science and Higher Education parametric evaluation. § 8. 2) and § 12. 1. 2) 22.02.2019.
© The Authors 2021;
This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.
(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received:01.02.2021.Revised:05.02.2021.Accepted:28.02.2021.
RELATIONSHIPS BETWEEN PHOSPHATEMIA/PHOSPHATURIA AND EEG/HRV PARAMETERS IN PATIENTS WITH CHRONIC PYELONEPHRITIS
Anatoliy V. Kushneruk1,2, Anatoliy I. Gozhenko1, Walery Zukow3, Igor L. Popovych1,4
1Ukrainian Scientific Research Institute for Medicine of Transport, Odesa, Ukraine [email protected]
2National Medical University, Ivano-Frankivs’k, Ukraine [email protected]
3Nicolaus Copernicus University, Torun, Poland [email protected]
4Bohomolets’ OO Institute of Physiology of National Academy of Sciences, Kyїv, Ukraine [email protected]
Abstract
Background. As part of the project "Relationships between parameters of electrolytes exchange and EEG&HRV in people without kidney disease and patients with chronic pyelonephritis" we have previously shown that parameters of calcium exchange and EEG/HRV are closely related. In this study, we analyzed the relationships between parameters of phosphate exchange and EEG/HRV in the same cohort of patients. Material and methods. The object of observation were 48 males and 15 females 24-76 years old, who came to the spa Truskavets’ (Ukraine) for the treatment of chronic pyelonephritis in remission. We recorded simultaneosly EEG (“NeuroCom Standard”) and electrocardiogram ("CardioLab+HRV") in II lead to assess the parameters of HRV. Phosphate concentration was determined in blood plasma and daily urine. Results. It was stated normal or moderately reduced plasma phosphate levels in combination with a very wide range of phosphate urinary excretion. A very strong canonical correlation was found between phosphatemia and EEG/HRV parameters (R=0,982). The correlations with the parameters of the beta and theta rhythms of the EEG and the HRV are positive, while with the parameters of the delta rhythm of the EEG are negative. The canonical correlation between phosphaturia and EEG parameters is also very strong (R=0,879). Conclusion. Parameters of phosphate exchange and EEG/HRV are closely related, however the question of the causal nature of correlations remains open.
Key words: phosphatemia, phosphaturia, EEG, HRV, relationships, chronic pyelonephritis
Sexual dimophism in plasma nitrogenous metabolites levels and some psycho-neuro-endocrine parameters
Get PDFPOPOVYCH, Igor, GOZHENKO, Anatoliy, BOMBUSHKAR, Igor, ANCHEV, Anatoliy & ZUKOW, Walery. Sexual dimophism in plasma nitrogenous metabolites levels and some psycho-neuro-endocrine parameters. Quality in Sport. 2022;8(4):46-57. eISSN 2450-3118. DOI http://dx.doi.org/10.12775/QS.2022.08.04.005
https://apcz.umk.pl/QS/article/view/41503
https://zenodo.org/deposit/7471209
The journal has had 20 points in Ministry of Education and Science of Poland parametric evaluation. Annex to the announcement of the Minister of Education and Science of December 21, 2021. No. 32582.
Has a Journal's Unique Identifier: 201398. Scientific disciplines assigned: Economics and finance (Field of social sciences); Management and Quality Sciences (Field of social sciences).
Punkty Ministerialne z 2019 - aktualny rok 20 punktów. Załącznik do komunikatu Ministra Edukacji i Nauki z dnia 21 grudnia 2021 r. Lp. 32582. Posiada Unikatowy Identyfikator Czasopisma: 201398.
Przypisane dyscypliny naukowe: Ekonomia i finanse (Dziedzina nauk społecznych); Nauki o zarządzaniu i jakości (Dziedzina nauk społecznych).
© The Authors 2022;
This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.
(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 16.11.2022. Revised: 19.11.2022. Accepted: 19.12.2022.
SEXUAL DIMOPHISM IN PLASMA NITROGENOUS METABOLITES LEVELS AND SOME PSYCHO-NEURO-ENDOCRINE PARAMETERS
Igor L. Popovych1,4, Anatoliy I. Gozhenko1, Igor S. Bombushkar1,2, Anatoliy S. Anchev2, Walery Zukow3
1Ukrainian Scientific Research Institute of Medicine of Transport, Odesa, Ukraine [email protected]
2Donets’kian National Medical University, Kropyvnyts’kyi, Ukraine
[email protected] [email protected]
3Nicolaus Copernicus University, Torun, Poland [email protected]
4OO Bohomolets’ Institute of Physiology, Kyїv, Ukraine [email protected]
Abstract
Background. We previously showed that the factor structure of the relationships between the plasma levels of nitrogenous metabolites (uric acid, bilirubin, urea, and creatinine), on the one hand, and the parameters of anxiety and neuro-endocrine status, on the other hand, is significantly different in men and women of reproductive age and postmenopausal. The purpose of this study is to identify the metabolic and psycho-neuro-endocrine features of these three cohorts of people. Materials and methods. The object of observation were 31 males (24÷69 y) and 30 females, from among them 18 postmenopausal (45÷76 y) and 12 of reproductive age (30÷42 y), with dysfunction of neuro-endocrine-immune complex. In basal conditions we determined plasma levels of nitrogenous metabolites and adaptation hormones, estimated the severity of the trait and reactive anxiety, recorded the ongoing HRV and EEG. After 4 or 7 days, repeated testing was performed. Results. To achieve the goal, the registered parameters were subjected to discriminant analysis. Along with the quite expected nitrogenous metabolites, age, testosterone and calcitonin (both raw and sex- and age-standardized values), trait anxiety, Kerdö's Vegetative Index, one of the vagal markers (SDNN), as well as 10 EEG parameters emerged as characteristic features of the cohorts. In the information space of two discriminant roots, three cohorts are clearly demarcated. Conclusion. We interpret this as another proof of the existence of connections between nitrogenous metabolites and psycho-neuro-endocrine parameters in line with the concept of the functional-metabolic continuum.
Keywords: nitrogenous metabolites, adaptation hormones, anxiety, HRV, EEG, men, women
Modulating effects of bioactive water Naftussya from layers Truskavets' and Pomyarky on neuro-endocrine-immune complex and metabolism at rats exposed to acute stress
Get PDFSydoruk Nadiya O, Gozhenko Anatoliy I, Zukow Walery. Modulating effects of bioactive water Naftussya from layers Truskavets’ and Pomyarky on neuro-endocrine-immune complex and metabolism at rats exposed to acute stress. Journal of Education, Health and Sport. 2016;6(11):715-730. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.227087
http://ojs.ukw.edu.pl/index.php/johs/article/view/4125
The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 755 (23.12.2015).
755 Journal of Education, Health and Sport eISSN 2391-8306 7
© The Author (s) 2016;
This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium,
provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License
(http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial
use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 02.11.2016. Revised 22.11.2016. Accepted: 30.11.2016.
MODULATING EFFECTS OF BIOACTIVE WATER NAFTUSSYA FROM LAYERS TRUSKAVETS’ AND POMYARKY ON NEURO-ENDOCRINE-IMMUNE COMPLEX AND METABOLISM AT RATS EXPOSED TO ACUTE STRESS
Nadiya O Sydoruk1,2, Anatoliy I Gozhenko1,Walery Zukow3
1Ukrainian Scientific Research Institute of Transport Medicine Ministry of Health,
Odesa [email protected]
2JSC “Dnipro-Beskyd”, Truskavets’, Ukraine [email protected]
3Faculty of Physical Education, Health and Tourism, Kazimierz Wielki University, Bydgoszcz, Poland [email protected]
Abstracts
Background. Previously we have been carry out integrated quantitative estimation of neuroendocrine, immune and metabolic responses to acute stress at male and female rats. The aim of this study is to compare the modulating effects of Bioactive Water Naftussya (BAWN) from layers Truskavets’ and Pomyarky on neuro-endocrine-immune complex and metabolism at rats exposed to acute stress. Materials and methods. The experiment is at white rats Wistar line. Rats were divided into intact and 5 test groups treated for seven days with tap (control) water, distilled water as well as table water "Truskavets’ka" and BAWN from Truskavets’ and Pomyarky layers. A day after the end of course animals test groups subjected to water immersion restraint stress. A day after stress determined HRV, endocrine, immune and metabolic parameters as well as gastric mucosa injuries and comparing them with parameters of intact animals. Results. BAWN both Truskavets’ and Pomyarky layers minimizes or obviates abnormal 15 parameters caused by stress, but does not affect the poststressory deviation of 7 parameters. On the other hand, BAWN causes deviation of 15 other parameters which little or do not change under stress. Distilled water and water "Truskavets’ka" affect some parameters the opposite way, other less favorable, but some more favorably than BAWN. Conclusion. BAWN both Truskavets’ and Pomyarky layers limit pathogenic effects of stress, and initiate or enhance its compensatory and sanogenic effects.
Keywords: acute stress, HRV, hormones, immunity, metabolism, rats, bioactive water Naftussya
Sexual dimorphism in relationships between of uricemia and some psycho-neuro-endocrine parameters
No full textPopovych Igor L., Gozhenko Anatoliy I., Bombushkar Igor S., Korda Mykhaylo M., Zukow Walery. Sexual dimorphism in relationships between of uricemia and some psycho-neuro-endocrine parameters. Journal of Education, Health and Sport. 2015;5(5):556-581. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.6792499
https://apcz.umk.pl/JEHS/article/view/38976
Specyfika i zawartość merytoryczna czasopisma nie ulega zmianie. Zgodnie z informacją MNiSW z dnia 2 czerwca 2014 r., że w roku 2014 nie będzie przeprowadzana ocena czasopism naukowych; czasopismo o zmienionym tytule otrzymuje tyle samo punktów co na wykazie czasopism naukowych z dnia 31 grudnia 2014 r. The journal has had 5 points in Ministry of Science and Higher Education of Poland parametric evaluation. Part B item 1089. (31.12.2014). © The Author (s) 2015; This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland and Radom University in Radom, Poland Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 10.04.2015. Revised 15.05.2015. Accepted: 31.05.2015.
SEXUAL DIMORPHISM IN RELATIONSHIPS BETWEEN OF URICEMIA AND SOME PSYCHO-NEURO-ENDOCRINE PARAMETERS
Igor L. Popovych1,4, Anatoliy I. Gozhenko1, Igor S. Bombushkar1, Mykhaylo M. Korda2, Walery Zukow3
1Ukrainian Scientific Research Institute of Medicine of Transport, Odesa [email protected]; [email protected]
2IY Horbachevs’kyi Medical University, Ternopil’, Ukraine [email protected]
3Kazimierz Wielki University, Bydgoszcz, Poland [email protected]
4OO Bohomolets’ Institute of Physiology, Kyїv [email protected]
Abstract
Background. There is a hypothesis that urate is not only the end product of the metabolism of purines like adenosine, but even more a novel target for neuroprotection. The purpose of this study, conducted in line with this hypothesis, is to clarify the relationship between the level of uricemia and EEG/HRV parameters both in men and women. Materials and Methods. The object of observation were almost healthy volunteers: 30 females (30÷76; 49±13 y) and 31 males (24÷69; 47±12 y). In basal conditions we estimated the state of the autonomous regulation by the method HRV, recorded EEG, determined level of uric acid and testosterone as well as estimated level of the trait and reactive anxiety. After 4 or 7 days, repeated testing was performed. Results. The method of canonical correlation analysis revealed a strong urato-neural relationships in both men (R=0,709; R2=0,503; Adjusted R2=0,393) and women (R=0,812; R2=0,659; Adjusted R2=0,542). Moreover, in women, the factor structure of the neural root is almost completely different from that in men, and also includes reactive anxiety and HRV parameters, which are absent in the factor structure of men. In addition, significant differences were found between the profiles of urato-neural correlations of women of reproductive age and postmenopausal women. Conclusion. The level of uricemia is significantly related to a number of parameters of EEG, HRV and anxiety. The strength and even the direction of the correlations are determined by factors linked to gender.
Keywords: uricemia, EEG, HRV, anxiety, testosteroneemia, men, women
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Psycho-neuro-endocrine accompaniments of individual variants of nitrogenous metabolites exchange
No full textBombushkar, Igor S., Korda, Mykhaylo M., Gozhenko, Anatoliy I., Żukow, Xawery, Popovych, Igor L. Psycho-neuro-endocrine accompaniments of individual variants of nitrogenous metabolites exchange. Journal of Education, Health and Sport. 2022;12(7):994-1008. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2022.12.07.101
https://apcz.umk.pl/JEHS/article/view/40369
https://zenodo.org/record/7154285
The journal has had 40 points in Ministry of Education and Science of Poland parametric evaluation. Annex to the announcement of the Minister of Education and Science of December 21, 2021. No. The journal has had 40 points in Ministry of Education and Science of Poland parametric evaluation. Annex to the announcement of the Minister of Education and Science of December 21, 2021. No. 32343.
Has a Journal's Unique Identifier: 201159. Scientific disciplines assigned: Physical Culture Sciences (Field of Medical sciences and health sciences); Health Sciences (Field of Medical Sciences and Health Sciences).
Punkty Ministerialne z 2019 - aktualny rok 40 punktów. Załącznik do komunikatu Ministra Edukacji i Nauki z dnia 21 grudnia 2021 r. Lp. 32343. Posiada Unikatowy Identyfikator Czasopisma: 201159.
Przypisane dyscypliny naukowe: Nauki o kulturze fizycznej (Dziedzina nauk medycznych i nauk o zdrowiu); Nauki o zdrowiu (Dziedzina nauk medycznych i nauk o zdrowiu).
© The Authors 2022;
This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.
(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 02.07.2022. Revised: 17.07.2022. Accepted: 31.07.2022.
Psycho-neuro-endocrine accompaniments of individual variants of nitrogenous metabolites exchange
Igor S. Bombushkar1, Mykhaylo M. Korda2, Anatoliy I. Gozhenko1, Xawery Żukow3, Igor L. Popovych1,4
1Ukrainian Scientific Research Institute of Medicine of Transport, Odesa, Ukraine [email protected]; [email protected]
2IY Horbachevs’kyi Medical University, Ternopil’, Ukraine [email protected]
3Medical University of Bialystok, Bialystok, Poland [email protected]
4OO Bohomolets’ Institute of Physiology of NAS of Ukraine, Kyїv, Ukraine [email protected]
Abstract
Background. Earlier we showed, by constructing regression models, that plasma nitrogenous metabolites (uric acid, urea, creatinine and bilirubin) are able to influence the state of the trait anxiety, autonomic and central nervous and endocrine systems. In this study of the same cohort, other methodological approaches were used. Materials and Methods. The object of observation were almost healthy volunteers: 30 females (30÷76 y) and 31 males (24÷69 y). In basal conditions determined plasma levels of nitrogenous metabolites as well as cortisol, aldosterone, testosterone, triiodothyronine and calcitonin, estimated the severity of the trait and reactive anxiety, recorded the ongoing HRV and EEG. After 4 or 7 days, repeated testing was performed. Results. By the method of cluster analysis, four groups were created, the members of which differ minimally from each other in terms of the constellation of nitrogenous metabolites, but differ maximally from the members of other groups. Using the method of discriminant analysis, it was found that nitrogenous clusters differ from each other in terms of sex, age, trait anxiety, as well as 30 neuro-endocrine parameters. Conclusion. The obtained data confirm and supplement previous data on the physiological psycho-neuro-endocrine activity of plasma nitrogenous metabolites.
Keywords: plasma bilirubin, uric acid, urea, creatinine, cortisol, testosterone, aldosterone, triiodothyronine, calcitonin, ongoing EEG, HRV, anxiety, men, women, cluster and discriminant analyses
Variations on the Author
Get PDF“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
Get PDFWe 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
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