bluuebunny/crossref_metadata_2025_split huggingface dataset:
Comparison of Correction Factors and Sample Size Required to Test the Equality of the Smallest Eigenvalues in Principal Component Analysis
Authors: Gañan-Cardenas Eduard , Correa-Morales Juan Carlos 
Published: October 2022

In the inferential process of Principal Component Analysis (PCA), one of the main challenges for researchers is establishing the correct number of components to represent the sample. For that purpose, heuristic and statistical strategies have been proposed. One statistical approach consists in testing the hypothesis of the equality of the smallest eigenvalues in the covariance or correlation matrix using a Likelihood-Ratio Test (LRT) that follows a χ2 limit distribution. Diﬀerent correction factors have been proposed to improve the approximation of the sampling distribution of the statistic. We use simulation to study the signiﬁcance level and power of the test under the use of these diﬀerent factors and analyze the sample size required for an dequate approximation. The results indicate that for covariance matrix, the factor proposed by Bartlett oﬀers the best balance between the objectives of low probability of Type I Error and high Power.

If the correlation matrix is used, the factors W ∗

and cχ2

are the most

recommended. Empirically, we can observe that most factors require sample sizes 10 or 20 times the number of variables if covariance or correlationmatrices, respectively, are implemented.
Preliminary results of the implementation of the program to reduce morbidity and prevent mortality from diseases of the circulatory system in workers of locomotive crews
Authors: Zhidkova E. A. , Gutor E. M. , Pankova V. B. , Vilk M. F. , Popova I. A. , Gurevich K. G. , Drapkina O. M. 
Published: October 2022

Corporate health programs are a common measure for the primary and secondary prevention of chronic non-communicable diseases.Aim. To study the first implementation results of a Targeted comprehensive program to reduce morbidity and prevent mortality from circulatory system diseases and early cancer detection in employees of JSC "Russian Railways" for the period from 2019 to 2023.Material and methods. The study used a survey of employees of locomotive crews (RLC), which was conducted twice: in the summer of 2018 and February-March 2021. The survey was conducted using a specially designed questionnaire that takes into account the health status of drivers and their assistants, production, and non-production risk factors. In 2018, 10476 questionnaires were collected (>7% of employees), and in 2021 — 14403 questionnaires (>10% of employees). The age structure of railways has not changed, which made it possible to analyze the frequency of occurrence of risk factors in dynamics.Results. In general, the mention of the RLC of the interfering effect of the noise factor, uncomfortable temperature, and undesirable odors in the driver’s cabin decreased for JSC "Russian Railways". The number of smokers on the South-Eastern Railway significantly increased during the study period. The number of people consuming insufficient amounts of vegetables and fruits has increased on the Far Eastern, West Siberian, Krasnoyarsk, and Volga railways. The frequency of workers’ meals at fast food restaurants has increased on the Southeastern Railway. The number of people with a good commitment to the basic principles of a healthy lifestyle has increased on the East Siberian, Trans-Baikal, West Siberian, Kuibyshev, Oktyabrskaya, Sverdlovsk, North Caucasian, and South Ural railways.Conclusion. The conducted research has shown the effectiveness of the initial stage of the implementation of the corporate program to reduce morbidity and prevent mortality from diseases of the circulatory system in RLC. The heterogeneity of the results for different railways was revealed.
True left ventricular aneurysm in acute myocardial infarction: immediate and long-term outcomes, prognostic factors, and treatment
Authors: Afonina O. S. , Kuzmina I. M. , Zagrebelny A. V. , Kokov L. S. , Martsevich S. Yu. 
Published: October 2022

An important place in the structure of cardiovascular morbidity is occupied by myocardial infarction (MI), especially complicated MI, including complicated by the formation of left ventricular (LV) aneurysm. The latter is a very formidable complication and leads to such life-threatening conditions as ventricular arrhythmias, heart failure, thromboembolism. The purpose of the review is to analyze the publications of foreign and Russian authors on risk factors, outcomes and treatment of patients with postinfarction LV aneurysm. Attention is paid to the role of registers in the study of this problem, as well as the analysis of literature data on the prevalence of such a complication as MI during the COVID-19 pandemic (COrona VIrus Disease 2019). It is shown that the registers of acute coronary syndrome, as a rule, do not contain separate data on patients with a formed LV aneurysm, risk factors for its development and outcomes in this group of patients. Postinfarction LV aneurysm can form only after transmural MI; therefore, it is important to keep records of patients diagnosed with transmural MI, primarily in the form of a register.
Echocardiographic characteristics of patients with ischemic and non-ischemic chronic heart failure with reduced ejection fraction
Authors: Ilov N. N. , Stompel D. R. , Boytsov S. A. , Romantsov E. I. , Nechepurenko A. A. 
Published: October 2022

TThe data indicate differences in the adverse outcomes of chronic heart failure (CHF) in both ischemic (ICMP) and non-ischemic origins. The knowledge of the structural and functional myocardial state, especially of the left ventricle (LV), is insufficient for accurate risk stratification of unfavorable events in different etiopathogenetic forms of CHF.Aim. To make a comparative analysis of echocardiographic characteristics of CHF patients with reduced LV ejection fraction (EF) ≤35% depending on the origin of CHF.Material and methods. 498 patients of CHF 3-4 functional class of NYHA (New-York Heart Association) with EF ≤35% taking optimal drug therapy were included in the study. Based on the etiology of CHF, two groups of patients with CHF of ischemic genesis (n=254) and dilated cardiomyopathy (DCMP, n=244) were formed. Two-dimensional echocardiography techniques in Band M-mode, color Doppler, and tissue Doppler imaging were carried out.Results. Patients with ICMP and DCMP had the same pattern of LV remodeling (mainly on the type of eccentric hypertrophy), but they reliably differed in the basic parameters of LV architectonics: endsystolic and end-diastolic dimensions, LV volume, LV myocardial mass and values of these indicators, indexed by body surface area. DCMP patients had a higher value of medial-lateral dimension and volume of left atrial, pathological mitral and tricuspid regurgitation was registered more often.Conclusion. It was found that left heart dimensions and volumes of DCMP patients exceed similar parameters in patients with ICMP. The possible association of the results with future adverse outcomes of CHF demands further research.
The relationship between gut microbiota, chronic systemic inflammation, and endotoxemia in patients with heart failure with preserved ejection fraction
Authors: Kaburova A. N. , Drapkina O. M. , Yudin S. M. , Yafarova A. A. , Koretsky S. N. , Pokrovskaya M. S. , Makarov V. V. , Kraevoy S. A. , Shoibonov B. B. , Efimova I. A. , Serebryanskaya Z. Z. 
Published: October 2022

Aim. To study the relationship between the abundance of the genera in the gut microbiota (GM) and levels of serum biomarkers of chronic systemic inflammation and endotoxemia in patients with HFpEF.Material and methods. The composition of GM among 42 patients with HFpEF (men, 57,1%) was assessed by 16S rRNA sequencing. The median age was 67,0 years, interquartile range [64,0; 71,5] years. Correlation and multivariate regression analysis (with adjustments for sex and age) of relationships between the relative abundance of intestinal bacteria and the concentrations of serum biomarkers including high-sensitivity C-reactive protein (hsCRP), interleukins (IL) 1β and 6, the soluble suppressor of tumorigenicity (sST2), and the level of lipopolysaccharide (LPS) was carried out.Results. According to multivariate regression analysis, the relative abundance of Haemophilus was directly related to the concentration of IL-1β (odds ratio (ОR) 32,37, 95% confidence interval (CI) 2,071237,69, p=0,025), Coriobacteriaceae (unclassified) — with IL-6 (ОR 6,27, (1,42-36,74), p=0,024), Porphyromonadaceae (unclassified) — with sST2 (ОR 5,96, (1,33-34,39), p=0,028), and the relative abundance of the genera Pseudomonas (ОR 7,09, (1,45-42,39), p=0,020), Parasutterella (ОR 4,55, (1,07-22,76), p=0,047) and Clostridiaceae (unclassified) (ОR 4,85, (1,06-24,7), p=0,045) was directly associated with LPS levels.Conclusion. In patients with HFpEF, the relative abundance of some GM genera (e.g., Haemophilus, Coriobacteriaceae (unclassified), Porphyromonadaceae (unclassified), Pseudomonas, Parasutterella, Clostridiaceae (unclassified)) is statistically significantly associated with the concentration of biomarkers of chronic systemic inflammation and endotoxemia.
Prevalence of non-alcoholic fatty liver disease among the working-age population: associations with socio-demographic indicators and behavioral risk factors (ESSE RF-2 data)
Authors: Evstifeeva S. E. , Shalnova S. A. , Kutsenko V. A. , Yarovaya E. V. , Balanova Yu. A. , Imaeva A. E. , Kapustina A. V. , Muromtseva G. A. , Maksimov S. A. , Karamnova N. S. , Soplenkova A. G. , Filichkina E. M. , Viktorova I. A. , Prishchepa N. N. , Redko A. N. , Yakushin S. S. , Drapkina O. M 
Published: October 2022

Aim. To assess the prevalence of non-alcoholic fatty liver disease (NAFLD) using the liver obesity index — FLI (Fatty Liver Index), and to study its associations with socio-demographic indicators and behavioral risk factors for NAFLD.Material and methods. The data from the multicenter ESSE-RF study (Epidemiology of cardiovascular diseases in the regions of the Russian Federation) — samples from the unorganized male and female population aged 25-64 years were used. 5,161 respondents were included, of which 2,275 (44,1%) were men. To assess the prevalence of NAFLD, the liver obesity index FLI was used, calculated according to the formula by Bedogni G, et al. (2006). A high FLI index ≥60 was considered a predictor of liver steatosis.Results. High FLI ≥60 was detected in 38,5% of men and 26,6% of women. Multivariate analysis of associations of high FLI index in men and women showed a strong relationship with age: men — odds ratio (OR) 5,01, 95% confidence interval (CI): 3,82-6,59 (p<0,0001) and women — OR 8,58, 95% CI: 6,39-11,64 (p<0,0001), living in rural areas: men — OR 1,32, 95% CI: 1,06-1,63 (p=0,011) and women — OR 1,4, 95% CI: 1,15-1,71 (p=0,001). The FLI index ≥60 was significantly associated with low physical activity (p=0,001) in men and current smoking in women (p=0,013).Conclusion. A high FLI index ≥60 is most common among men, significantly associated with age, living in rural areas, currently smoking women, and low physical activity men. Higher education, in relation to FLI ≥60, had a protective effect on women.
Semantic Prosody of Research Verbs: A Corpus-Informed Study
Authors: Al-Otaibi Ghuzayyil Mohammed 
Published: October 2022

Background. Synonymous words behave differently, and language users should be aware of the fact that though near-synonyms share similar denotational meanings, they require different collocates. Further, with specific collocates, they provoke a special affective meaning called semantic prosody. To give an example of this problematic area, researchers use a lot of reporting verbs that merely describe an opinion such as argue, claim, believe, etc. or state facts such as find, confirm, cite, etc. Such verbs cannot be used interchangeably as some novice researchers usually do when they discuss their findings or compare their results with others'.
Purpose. This study aimed at examining the semantic prosody of 24 research verbs commonly used by researchers. For this purpose, collocational behavior of nearly synonymous verbs was examined. Compared to previous studies, this study considered only adverbs co-occurring with such research verbs.
Methods. The researcher used the Directory Open Access Journals (DOAJ), which is of 2.6 billion words and 659,132 texts, and focused on predicational adverbs that end in –ly. For the purpose of the study, adverbs with positive semantic prosody are those proving a stronger attitude towards the proposition, improving the quality, quantity, manner of a piece of information or its the relation to the topic or those suggesting a higher level of certainty.
Results. Investigating 24 research verbs related to hypothesizing, reporting, and summarizing, the researcher found that such verbs have different sets of collocates and thus distinct semantic prosodies. Results showed that 12 of the research verbs were positive (i.e., quantify, argue, claim, suggest, state, mention, indicate, outline, summarize, encapsulate, recapitulate, and reveal), whereas 12 verbs (i.e., hypothesize, review, conclude, presume, posit, assume, theorize, speculate, note, report, find, and postulate) were neutral.
Implications. The study has its own implications for writing instructors and researchers. Novice researchers should not use some research verbs interchangeably as they require different collocates of adverbs. Further, future research should address the relationship between word's etymology and semantic prosody as the present study showed that verbs derived from Latin (e.g., conclude, hypothesize, postulate, etc.) are neutral compared to those that are originally French.
Does Journal Indexation Matter? A Genre-Approach Move Analysis of Nursing English Research Article Abstracts
Authors: Lubis Arif Husein , Kurniawan Eri , Gunawan Wawan 
Published: October 2022

Background. A plethora of previous studies have discussed the importance of a genre-approach move analysis because the analysis results can provide a picture of the typical conventions of research article writing across disciplines.
Purpose. Nursing as a professional discipline, however, has received scant attention, particularly in the abstract section in the journals with different indexation. To fill such an empirical void, this qualitative study probes the notion of whether journal indexation matters in manifesting the rhetorical moves in the nursing abstracts.
Methods. Fifty abstracts from a Scopus-indexed Q1 journal and another 50 from three Sinta-indexed journals in Indonesia were analyzed manually. This study employed a descriptive comparative approach to analyze and present the data.
Findings. The findings demonstrated conformity manifestations of method and results moves along with their linguistic realizations by using simple past tense in active or passive forms. The article abstracts from the Scopus-indexed nursing journal emphasized the novelty of the research more than their counterparts from the identification of gap of previous research and highlighting the significance of the study.
Implications. This study suggests writers consider the contributing role of journal indexation type in projecting a higher standard of abstract writing in preparing their abstracts to increase the acceptance rate during an initial screening stage.
Verbal and Nonverbal Strategies of Interaction between Active and Passive Smokers in Situations of Smoking in Public Places: a Method of Case Formulation
Authors: Bedina I.D. , Kochetova T.V. 
Published: October 2022

Objective. Identification of the features of social perception in situations of smoking in public places, as well as patterns and strategies of interaction in the communicative practices of active and passive smokers in public urban spaces using the “case formulation” method.Background. Because of the non-compliance with the law on smoking in public places, the issue of combating such violations becomes urgent. But it is important to use not only the administrative resources of the state, but also social control. Searching for the features of communicative practices of both active and passive smokers in relation to each other, their mutual social perception and factors influencing the interaction between them will help to suggest effective ways to use social capital to combat the problem of smoking in public places.Study design. The paper studied cases related to the behavior of smokers and non-smokers in an open urban space. Using the interpretation of qualitative data, categories and subcategories corresponding to the patterns of behavior of subjects and their mutual perception from both interacting groups were identified. Categories and subcategories were formed by data encoding.Participants. For the study, 4 cases of interaction between active and passive smokers in Tverskaya Street were selected by random sampling.Measurements. The method of covert observation with a passive type of participation was chosen. 4 observation sessions were conducted the results of which formed the basis of the cases. The observation involved the study of the behavior of subjects in relation to each other, including verbal and nonverbal signs exchanged by communication participants; features of urban spaces in which communication takes place; the place of interaction.Results. Active and passive smokers use verbal and nonverbal interaction strategies, which are characterized by some features of social perception. Thus, verbal ones include an impersonal expression of discontent, an appeal to the fact of smoking, an appeal to the smell; non-verbal ones — most often motor ones: slowing down the step, accelerating the step/overtaking, as well as changing the trajectory of smoke.Conclusions. The using of the case formulation method opens up opportunities for studying various communicative practices in the modern urban environment. It is important to conduct communication campaigns aimed at both violators and people affected by their actions. The former should be encouraged to behave responsibly by the immersive transfer of “someone else’s” social experience, the victims should be mobilized to use the advantages of their existing social coercion apparatus by verbalizing demands.
PERMA-Profiler: the Approbation of the Russian Version
Authors: Isaeva O.M. , Akimova A.Y. , Volkova E.N. 
Published: October 2022

Objective. Study aims to translate into Russian, to adapt and to validate a Russian version of PERMA-Profiler (Butler, Kern, 2016).Background. The topic of wellbeing and happiness gains attention in both academic publications and the business community. One of the key components for promoting wellbeing is providing a reliable measurement tool for its assessment.Study design. The translation, adaptation and validation process was subdivided into 3 stages. At the 1st stage English version of the PERMA-Profiler was translated into Russian. At the 2nd stage we assessed of the structural and convergent validity, reliability by the internal consistency of the items of the questionnaire. The main task of the 3rd stage of the study was to check the retest reliability of the PERMA-Profiler questionnaire by conducting a correlation analysis of the values of the questionnaire components obtained at the second and third stages.Participants. The main psychometric sample included 6229 participants aged between 18 and 62 years. All participants live in the Russian Federation.Method. The study used the questionnaires “Psychological Well-Being Scale” by K. Riff, “Well-being, Activity, Mood”, Subjective Feeling of Loneliness Scale by D. Russell, L. Peplo, M. Ferguson, “Life Satisfaction Scale” by E. Diner. Correlation analysis, confirmation factor analysis, analysis of scales by internal consistency and the half method were used for data processing and analysis cleavage.Results. The expected structure of the PERMA-Profiler questionnaire was confirmed. The scales of PERMA-Profiler had sufficient reliability and validity.Conclusions. PERMA-Profiler well-being questionnaire can be used for sociological, psychological and interdisciplinary studies of the psychological well-being of the individual.
Attitudes Towards Physical Disability Scale Adaptation on a Russian Sample
Authors: Romanova M.O. , Kozhan E.A. , Bykov A.O. , Efimova L.A. , Asadullina A.F. 
Published: October 2022

Objective. The Attitudes to Physical Disability Scale (ADS) adaptation.Background. Opinion polls show that in Russia perception of people with disabilities is complex and ambiguous. However, there is still no reliable method for measuring attitudes towards disability in Russia, but attitudes influence people with disabilities’ well-being and their inclusion.Study design. We conducted 2 studies. Within study 1 the original scale items were translated, tested at the stages of cognitive interviews and web-probing and corrected. Then a survey containing only the translated scale was conducted. In study 2 additional scales were included in the questionnaire in order to check the construct validity of the ADS.Participants. Study 1 sample included 627 respondents (45,6% men, Mage=35.99). Study 2 sample included 738 respondents (45,8% men, Mage=36.21).Measurements. During the research a series of cognitive interviews, web-probing and 2 surveys were conducted. Attitudes to Physical Disability Scale, social dominance orientation scale, just world belief scale and «Big Five Inventory» were used.Results. EFA results revealed the 3-factor structure of the Russian ADS version. CFA results indicated that the model has a good fit. Correlation analysis results proved scale construct validity, while high Cronbach’s α score proved its internal consistency.Conclusions. Russian ADS version proved to be a reliable and valid tool for investigating attitudes towards people with disabilities in Russia.
Scientific Reflection on the Development of Academic Social Psychology (to the 50th Anniversary of the IP RAS and the 100th Anniversary of the Birth of E.V. Shorokhova)
Authors: Semenov I.N. , Vodopianov D.A. 
Published: October 2022

Objective. Against the background of the analysis of the history of social psychology, to study the specifics of its academic research at the IP RAS and the role of E.V. Shorokhova in their organization, characterizing her scientific life.Background. In connection with the 50th anniversary of the country’s leading scientific center for experimental psychological research — the Institute of Psychology of the Russian Academy of Sciences — the article analyzes the scientific and organizational activities of the IPAN Deputy Director, head of the laboratory of social psychology, one of the founders and leaders of Soviet and post-Soviet social psychology, Professor E.V. Shorokhova, whose 100th birthday is celebrated by the scientific community this year. The relevance of the article is related to the need to study the history of Soviet social psychology as a historical and scientific basis for studying the existing prerequisites and explicating the logic of the development of socio-psychological knowledge in order to determine its future prospects in modern socio-cultural conditions. The novelty of the article is determined by the scientific methods of the institutional and personological analysis of the heritage and the construction of the periodization of E.V. Shorokhova as an authoritative enthusiast of the country’s first post-war socio-psychological research and one of the organizational leaders of their further development during the «Thaw» at the Institute of Philosophy of the USSR Academy of Sciences and then at the Institute of Psychology of the USSR Academy of Sciences/RAS during periods of «Stagnation», «Reconstruction» and modern democratization society.Conclusions. This article shows for the first time the periodization of the life stages of E.V. Shorokhova, their existential-institutional significance and scientific-subject content are shown, which had a strategic impact on the organization of a complex of socio-psychological research at the IP RAS.