bluuebunny/crossref_metadata_2025 huggingface dataset:
Symbolika barw w „sakralnym” kinie Kantemira Bałagowa
Authors: Machaj Justyna
Published: December 2021

Celem pracy jest analiza twórczości filmowej rosyjskiego reżysera i scenarzysty Kantemira Bałagowa. Na podstawie dwóch pełnometrażowych produkcji – Bliskości (2017) oraz Wysokiej dziewczyny (2019) zwrócono uwagę na formalny aspekt wymienionych filmów, rolę feminizacji narracji historycznej, a także złożoną sieć inspiracji (kinowe klasyki i rosyjska literatura). Istotnym dla twórczości Bałagowa jest kontekst społeczno-polityczny Rosji, który służy omawianemu twórcy jako narzędzie rewizji narodowych mitów. Uzupełnieniem rozległego portretu reżysera jest charakterystyka twórczości Aleksandra Sokurowa, wprowadzająca istotny dla badań aspekt prawosławnego ikonopisarstwa. Autorka wskazuje, że kluczy interpretacyjnych dla twórczości Sokurowa i Bałagowa należy poszukać właśnie w symbolice prawosławnych ikon. Ambicją niniejszej pracy jest poszerzenie aktualnego stanu badań nad filmografią Kantemira Bałagowa, który obecnie ogranicza się do premierowych recenzji oraz festiwalowych wywiadów.
Mapowanie kanonu. Literatura polska w perspektywie światowej
Authors: Mikołajczak Małgorzata
Published: December 2021

The article discusses the research proposal presented in Światowa historia literatury polskiej. Interpretacje [World History of Polish Literature. Interpretations], edited by Magdalena Popiel, Tomasz Bilczewski and Stanley Bill. Mikołajczak contrasts the research concept of world literature with the dominant approaches to the world literature in the area of contemporary literary studies and the traditional model of the history of literature. She reflects on the situation of Polish literature in the world, taking into account the ways in which Polish works circulate in other cultural circles, the possibilities and limitations of translation as well as shifts within the canon. She also indicates the opportunities that open up for Polish literature in the global context.
Szaleństwo i literatura. O Dziennikach Stefana Żeromskiego w perspektywie afektywnej
Authors: Chyła Karolina
Published: December 2021

Using the tools offered by affect theory, this article aims to present the theme of madness, its numerous incarnations and transformations in the text of the diaries that Stefan Żeromski left behind. Madness is depicted here as a phenomenon defying any kind of unambiguity; it can be anything from a secret of nature to be deciphered, through a creative frenzy of inspiration, to a state of apathy, sometimes interwoven with sudden ecstasy, triggered by the chronic hunger that Żeromski suffered as a young man, in other words: during his diarist period.
Something Funny Happened on the Way to the Twenty-First Century
Authors: Kuklick Bruce
Published: December 2021

This essay first traces change in, roughly, the epistemology of the humanities from the 1950s to the 21st century. The second section looks at how the meaning and options in moral philosophy altered in more or less the same period. The last and easily most speculative section examines how these changes permeated American culture, and how professional philosophers responded to the challenges of the new political world they inhabited.
Symmetry as a Guide to Post-truth Times: A Response to Lynch
Authors: Fuller Steve
Published: December 2021

William Lynch has provided an informed and probing critique of my embrace of the post-truth condition, which he understands correctly as an extension of the normative project of social epistemology. This article roughly tracks the order of Lynch’s paper, beginning with the vexed role of the ‘normative’ inScience and Technology Studies, which originally triggered my version of social epistemology 35 years ago and has been guided by the field’s ‘symmetry principle’. Here the pejorative use of ‘populism’ to mean democracy is highlighted as a failure of symmetry. Finally, after rejecting Lynch’s appeal to a hybrid Marxian–Darwinism, Carl Schmitt and Thomas Hobbes are contrasteden routeto what I have called ‘quantum epistemology’.
Progress and perspectives in total body PET systems instrumentation
Authors: Vandenberghe Stefaan
Published: December 2021

Total body positron emission tomography (PET) systems are being developed by different groups worldwide. These systems have potential to change the number of applications in which molecular imaging is used. The change from a short axial field of view (FOV) to a longer one is however associated with a linear increase in the cost of these systems. This may limit their application to a small number of centers (capable of obtaining sufficient research funding). Therefore it remains interesting to see if lower cost systems can be developed and bring total body PET to the clinic for an acceptable budget. The wider availability of this low cost system can also enable more researchers to further optimize and explore the full potential of total body PET.
Two Theories of Natural Justice in Plato’sGorgias
Authors: Catana Leo
Published: December 2021

In Plato’sGorgias482c4–484c3, Callicles advances a concept of natural justice: the laws of thepolismust agree with nature, that is, human nature. Since human nature is characterised by its desire to get a greater share (pleon echein), nature itself makes it legitimate that stronger human beings get a greater share than weaker ones. Socrates objects: Callicles’ theoretical approach to civic life poses a threat to thepolis’ community, its citizens, and to the friendship amongst its citizens. However, Socrates accepts Callicles’ premise, that the laws of thepolismust agree with nature (again, human nature). Still, he disagrees with Callicles about the nature of human nature and proposes an alternative theory of human nature, eventually leading to his alternative concept of natural justice. The article explains the arguments underpinning these two concepts of natural justice, including the conflicting understandings of human nature.
Between Truth and Meaning. A Novel Interpretation of theSymplokein Plato’sSophist
Authors: Giovannetti Lorenzo
Published: December 2021

In this paper, I provide an interpretation of thesymploke ton eidonatSoph. 259e. My goal is to show that the specific metaphysical view expressed by the interweaving of forms best accounts for Plato’s explanation of truth and falsehood. In the first section, I introduce the fundamentals of the interpretation of the greatest kinds and their functions. After that, I propose an interpretation of the assertion at 259e, the upshot of which is that the interweaving of forms only deals with extra-linguistic items, that it is related to both truth and meaning of linguistic items, in a very complex way which I aim to explain throughout the paper, and that it never involves sensible particulars. In the second section, I put forward my reading of the Stranger’s description of howlogoiare structured and how they work. I pay particular attention to the view that words reveal being when they intertwine to form a statement. In the third section, I interpret the statements concerning Theaetetus. My goal is to advance a new reading of the specific role that kinds and their interweaving play with regard to the truth and falsehood of the statements concerning Theaetetus. The result is the very specific view that the kinds, which are the separated ontological cause of what happens in space and time, are the grounds of both the truth and the meaning of statements.
La sintassi del cosmo: osservazioni su un volume recente
Authors: Alessandrelli Michele
Published: December 2021

This note does examine a recent volume by Ada Bronowski on the Stoic doctrine of the lekta (The Stoics on Lekta. All There Is to Say, OUP, 2019). The first part summarizes its content, while the second discusses some critical and controversial points, in particular the Platonic tenor of the interpretation of the Stoic lekta offered by the Author. This interpretation gives an extra-linguistic and realistic function to items that the Stoics cautiously left under-determined from the ontological point of view.
A pilot study exploring the relationship between urban greenspace accessibility and mental health prevalence in the City of San Diego in the context of socioeconomic and demographic factors
Authors: Wilderman Alexis , Lam Marcus , Yin Zhi-Yong
Published: December 2021

The connection between urban greenspace and mental health is a robust but unsettled area of research in the public health and urban planning literatures. Inconsistent findings in prior studies are mostly due to differences in greenspace measurements and interrelations with socio-demographic factors. This study examines the relationships of mental health prevalence (MHP) with health prevention, socioeconomic and race-ethnicity factors, and proximity to greenspace at the census-tract level in the City of San Diego, California, using data from the CDC 500 Cities Project and US Census Bureau. We considered three greenspace proximity measures: distances to specified vegetation types, parks, and tree cover. Spear-man’s rank correlation showed that MHP was significantly correlated to distances to greenspace (rho = 0.480), parks (rho = 0.234), and tree cover (rho = 0.342), and greenspace proximity plus crime occurrence explained 37.8% of the variance in MHP in regression analysis. Further analysis revealed that socioeconomic status, race-ethnicity, and health prevention explained more than 93% of the variance in MHP, while greenspace proximity did not enter the regression model with statistical significance. We discovered that certain socioeconomic and race-ethnicity variables, such as proportion of Hispanic population, poverty, and regular checkup, may fully represent the effects of greenspace on MHP in the City of San Diego. Regression analysis for three subsections of the city suggested that different predictors of MHP should be considered in formulating intervention measures. Our results indicate the need to improve mental health conditions through a range of interventions that address the disparities experienced by racial-ethnic minorities and those in lower-socioeconomic classes.
Personal branding of managers in service companies
Authors:   SGH Warsaw School of Economics, Muszyńska Weronika
Published: December 2021

Personal branding in the last ten years has been gaining significantly in popularity - especially in the business environment (Gehl, 2011; Wee & Brooks, 2010). Meanwhile, the literature still recognizes the need for empirical research on personal branding that examines how various professions experience personal branding. Managers are increasingly aware that the activities they perform as part of personal branding affect how the organization they represent is perceived. The aim of this article is to identify the process of building personal brands by managers. To achieve this goal, a literature review and qualitative research were carried out in the form of individual in-depth interviews. The choice of the research method is justified by the subject of the analysis. The study covered a group of nine people with at least two years of experience in a managerial position and employed in service companies located in Greater Poland. As a result of the conducted research, it was found that personal branding is perceived as a multi-stage process in which social media is credited with increasing use. In addition, organizations only support building personal brands by managers and executives. The article is a field for further exploration of publications and research.
Key competencies in the labour market from the perspective of higher education students
Authors:   University of Lodz, Matuszewska-Kubicz Agata
Published: December 2021

The subject of key competencies in the labour market has been discussed in many publications and reports in recent years, presenting the point of view of researchers and employers on the issue. However, the perspective of future employees also seems to be worth discussing; hence this research covers university students currently entering the labour market. Ten competencies identified as key in the labour market are examined: problem-solving, creativity and innovation, analytical and critical thinking, active learning and teaching, interdisciplinarity, emotional intelligence, social intelligence, intercultural competencies, virtual cooperation, digital competency. The study aimed to determine the respondents’ opinions and beliefs about selected key competencies on the labour market, their willingness to develop them, and their declared level of these competencies. The survey was carried out using the quantitative method, using the CAWI technique, on a sample of 352 respondents – students of the University of Lodz. The results indicate that the students mostly share the view that the competencies indicated as being key will be expected by employers in the labour market in the next five years. Moreover, for most of the competencies being studied, they assess their current level to be high and see the need to develop them for professional purposes. Discrepancies are also indicated between the students’ self-assessment of their competencies and their employers’ assessment.
The students' and graduates' perception of the potential usefulness of Artificial Intelligence (AI) in the academic curricula of Finance and Accounting Courses
Authors:   Cracow University of Economics, Grabińska Barbara , Andrzejewski Mariusz , Grabiński Konrad
Published: December 2021

The application of computer-based technologies in academic education has at least three decades of history and experience. In some study fields, it has been present since the very beginning, while in others it has become a necessity only in recent years. The ongoing technological revolution is disrupting the traditional professions with fundamental changes and – in some cases – even with the threat of disappearance of jobs. The finance and accounting professions are expected to undergo a technological change in the near future. While the changes are visible at the corporate level, university education seems to lag one step behind. We conducted a study among the students and graduates of the finance and accounting line of studies at the Cracow University of Economics. Using regression analysis, we investigate the perception of the usefulness of courses providing knowledge on new technologies like Artificial Intelligence (AI). We use a unique Polish setting, which is a leader in terms of outsourcing services. Our findings show that both students and graduates are aware of the importance of technological change. The courses teaching basic subjects are essential, but the current expectations are much higher in terms of the application of new technology based on AI in finance and accounting.
Latent Deep Space: Generative Adversarial Networks (GANs) in the Sciences
Authors: Offert Fabian
Published: December 2021

The recent spectacular success of machine learning in the sciences points to the emergence of a new artificial intelligence trading zone. The epistemological implications of this trading zone, however, have so far not been studied in depth. Critical research on machine learning systems, in media studies, visual studies, and “critical AI studies,” in the past five years, has focused almost exclusively on the social use of machine learning, producing an almost insurmountable backlog of deeply flawed technical reality. Among this backlog, one machine learning technique warrants particular attention from the perspective of media studies and visual studies: the generative adversarial network (GAN), a type of deep convolutional neural network that operates primarily on image data. In this paper, I argue that GANs are not only technically but also epistemically opaque systems: where GANs seem to enhance our view of an object under investigation, they actually present us with a technically and historically predetermined space of visual possibilities. I discuss this hypothesis in relation to established theories of images in the sciences and recent applications of GANs to problems in astronomy and medicine. I conclude by proposing that contemporary artistic uses of GANs point to their true potential as engines of scientific speculation.
Pregnancy-associated breast cancer: the influence of gestational age
Authors: Suelmann Britt B M , van Dooijeweert Carmen , Bakhuis Carsten F J , Linn Sabine , van der Wall Elsken , van Diest Paul J
Published: December 2021

Whether pregnancy-associated breast cancer (PABC) arise before or during pregnancy and whether this histopathology is affected by gestational age are currently unclear. The present study assesses the influence of gestational age and lactation on the histopathologic profile of PABC.

We identified 744 patients with PABC (defined as breast cancer during pregnancy or 6 months following delivery). Histopathologic features were compared between pregnant and postpartum patients.

We found that age at diagnosis was 34.2 years, and a majority of cancers were diagnosed during pregnancy (71.3%). Within pregnant patients, tumors were significantly more often estrogen receptor (ER)-negative in second and third trimesters (57.4%), as compared to first trimesters (41.9%) (P  = 0.036). Similarly, a progesterone receptor (PR)-negative status was reported significantly less often within first trimesters (38.0%) compared to second and third trimesters (57.1%) (P  = 0.032). For human EGF receptor 2 status, no significant differences were observed between gestational trimesters or lactating vs non-lactating patients. In postpartum patients, grade III tumors were found in over 80%, with high percentages of ER-negative tumors reaching 63% in those lactating vs 49% in non-lactating patients.

This study demonstrates the varying histopathologic profile of PABC by gestational age and lactation status. Second- and third-trimester cancers display most typically the common ER/PR-negative phenotype, which is commonly reported in the literature. The increased ER-negative status and percentage grade III tumors in lactating vs non-lactating patients also suggest the presence of additional factors further diversifying histology. This indicates the need for clear definitions of PABC and the role of potential subgroups, which may provide a stepping stone for further in-depth research into PABC-carcinogenesis.
Tracheal Diverticulum in SARS-CoV-2 Patients on Non-Invasive Ventilation A not so “Spontaneous” Cause of Pneumomediastinum? An imaging Pictorial Presentation of Two Cases with Review of Literature
Authors: Joseph Veena Mariam , Lynser Donboklang , Tiewsoh Iadarilang , Dutta Kaustuv , Phukan Pranjal , Daniala Chhunthang
Published: December 2021

Spontaneous pneumomediastinum is a rare but potentially life-threatening condition, the incidence of which has showed an increase in patients with SARS-CoV-2 pneumonia, especially when they are on positive pressure ventilation. None of the reported cases of covid related pneumomediastinum had an associated tracheal diverticulum. Also, to the best of our knowledge, tracheal diverticulum has not been reported in patients on NIV. We report 2 cases of COVID-19 pneumonia on NIV with pneumomediastinum, which also had associated tracheal diverticulum, one of which developed after NIV. Though the establishment of causality needs further research, early detection of a tracheal diverticulum, which might be a harbinger of pneumomediastinum, can be a timely alarm to prompt titration of the pressure settings and judicious use of NIV. The role of inverted grey scale CT images in mediastinal window is a simple, yet hardly utilised radiological tool to increase detection of ‘mediastinal air’, let it be free air or air within a diverticulum. Through this case report, we would like to highlight the role of conventional and inverted CT imaging of pneumomediastinum and tracheal diverticulum in general and in SARS-CoV-2 pneumonia in particular, and to call for more objective research to throw light on the plausible relationship between pneumomediastinum and tracheal diverticulum.
A two-dimensional limit discrete theorem for Mellin transforms of the Riemann zeta-function
Authors: Balinskaitė Violeta
Published: December 2021

In the paper two-dimensional limit theorem for the modified Mellin transform of the Riemann zeta-function is obtained.
On the geometry on special spaces of hyperplane elemente
Authors: Mazėtis Edmundas
Published: December 2021

In this paper analystes metric space of hyperplane elemente with special metric. Is prowed, that in such spaces intrinsic almost complex and almost product structures exists, criteria of its integrability and associated connections established.
Issues on legal knowledge bases traceability
Authors: Paliulionienė Laima , Čaplinskas Albertas
Published: December 2021

Requirements traceability is used in many disciplines including system and software engineering. Usually traces are used to describe and follow the life of a requirement, in both a forward and backward directions. Traceability problems are faced in legal knowledge bases, too. However, in this case legal statements should be traced instead of requirements. Traces required to trace legal statements are specific in many aspects, therefore requirements tracing methods cannot be applied directly. The paper discusses the problems of traceability in legal knowledge bases and investigates the applicability of traceability matrices to solve these problems.
On one generalization of Wronskian
Authors: Kirjackis Eduardas
Published: December 2021

In this article the properties of the specially introduced determinant, elements of which are the divideddifferences in different orders are studied. The close connection of this determinant with the Chebyshevsystem and the ordinary differential equation is indicated.
Is Bitcoin Price Driven by Macro-financial Factors and Liquidity? A Global Consumer Survey Empirical Study
Authors: Havidz Shinta Amalina Hazrati , Karman Viendya Ervina , Mambea Indra Yudha
Published: December 2021

This research aims to utilize macro-financial and liquidity elements as the factors that may affect the price of Bitcoin as the largest cryptocurrency in terms of market capitalization. The macro-financial factors analyzed in this study were foreign exchange, stock market index, interest rates, and gold, while liquidity ratio is the internal factor. This study applied a fixed-effect model (FEM) and Generalized Method of Moments (GMM) on gathered weekly data from 1 January 2017 to 29 December 2019 from 18 countries with the total of 2,826 observations. The analysis revealed that US Dollar amplifies Bitcoin trading; an increase in interest rate will decrease investors’ intention to invest in Bitcoin as a speculative asset, and gold could replace Bitcoin as a substitute asset. Moreover, Bitcoin was found to be highly liquid, which attracts many investors, while the stock market index proved to be insignificant.
An experience of obtaining mature eggs of the Siberian sturgeon (Acipenser baerii (Brandt, 1869)) in non-traditional period
Authors:   Institute of Fisheries NAAS, Kyiv, Pashko S. , Pashko M. ,   Institute of Fisheries NAAS, Kyiv, Tretiak O. ,   Institute of Fisheries NAAS, Kyiv, Kolos O. ,   Institute of Fisheries NAAS, Kyiv
Published: December 2021

Purpose. To investigate the peculiarities of obtaining ovulated eggs of the Siberian sturgeon in hatchery conditions in non-traditional (winter) period and determine major features of brood fish used for the experiments. Methodology. The material for the study were age-10+ Siberian sturgeon females with body weights of 6.20-8.24 kg grown in conditions of floating cages in a water body with natural temperature regime of the forest-steppe zone of Ukraine. The experiments were conducted with a regulated water temperature regime in the third decade of January with the use of natural gonadotropic drugs for the stimulation of egg maturation in fish. Brood fish were prepared for the experiment in the recirculating aquaculture system. Measurement of fisheries parameters and study of physicochemical factors of the aquatic medium were performed according to generally accepted methods. Experiment results were assessed statistically using standard software. Findings. With water temperature of 14-15оС, depending on the dosage of the gonadotropic drug, different efficiencies of gonad maturation in experimental groups of fish were detected. More than 85% of females matured after dosing of gonadotropic drugs 3.5 and 4.5 mg / kg. In the version with a minimum dose of gonadotropic substance 2.5 mg / kg responded positively to hormonal stimulation 57% of females. The average weight of eggs obtained in some groups of brood fish was 819.5-1079.0 g. Average working fecundity and relative working fecundity in experimental groups of the Siberian sturgeon females varied within 47.95-52.64 thousand eggs and 6.93-7.17 thousand eggs/kg of fish body weight, respectively. The duration of maturation after the second (resolving) administration of the gonadotropic drug until the moment of the occurrence of the ovulation process varied mainly within 15-20 hours. Originality. The peculiarities of obtaining mature eggs of the Siberian sturgeon with the use of methods of industrial reproduction of sturgeons, which are new for the aquaculture of Ukraine, were studied. Practical value. The study results are of interest for the development of modern methods of sturgeon aquaculture in conditions of fish farms of industrial type. Key words: brood Siberian sturgeon, industrial aquaculture, non-traditional technologies, eggs, ovulation, fisheries parameters.
Study and development of methods for obtaining intergeneric hybrids of salmonids (Salmonidae (Jarocki or Schinz, 1822)) for achieving the effect of heterosis and increasing their productivity
Authors:   Institute of Fisheries NAAS of Ukraine, Kyiv, Mruk A. , Kucheruk G. ,   Institute of Fisheries NAAS of Ukraine, Kyiv, Galoyan L. ,   Institute of Fisheries NAAS of Ukraine, Kyiv, Mykhailenko N. ,   Institute of Fisheries NAAS of Ukraine, Kyiv
Published: December 2021

Purpose. To study the possibility of obtaining highly productive intergeneric salmonid hybrids between rainbow trout and brook trout; brown trout and brook trout; rainbow trout and brown trout, as well as to develop methodological approaches and determine of optimal variants of hybrid crosses. Findings. In order to obtain intergeneric hybrids, we used six variants of hybrid crosses with brood fish of three salmonids belonging to three families (Salmo, Oncorhynhus, Salvelinus). The study used age-4 female rainbow trout with average body weight of 3296.8 g, Fork length was 62.6 cm, and the average working fecundity was 7420 eggs. Age-3 rainbow trout males had an average body weight of 1613 g and an average body length of 49.8 cm; age-3 brown trout females had an average body weight of 453.8 g and average working fecundity of 1540 eggs, and males had an average weight of 458.7 g; age-3 brook trout females had an average weight of 809.7 g and a length of 38.9 cm with working fecundity of 1732 eggs, and age-4 males had an average weight of 1212.8 g and an average body length of 46.0 cm. Twelve variants of fertilization were used: six variants at normal water temperature and six variants after a temperature shock. Under natural conditions, the creation of intergeneric hybrids is almost impossible, except for variants between brown trout and brook trout, which is due to the similarity of their biology. However, the efficiency of this cross is low and economically impractical for fish farmers. When applying the temperature shock during fertilization, hybrids proved to be the most effective, where females were rainbow trout, and males were brook trout and brown trout. The average weight of young-of-the-year intergeneric hybrids was, depending on the species of fish, from 8 to 54 g. The highest results were obtained for the creation of hybrids where following broodstock was used: ♂brook trout Х ♀brown trout; ♂brown trout Х ♀rainbow trout. In these variants of crossbreeding, the survival rate of young-of-the-year during the period of cultivation was 94.8 and 92.8%, respectively. In particular, the above hybrids did not suffer from infectious diseases during the growing period. Originality. New data on the development of methods for obtaining viable offspring of newly created hybrids were obtained, and the optimal variants of crossing between females and males of these salmonids were determined. Practical value. The results can be used for artificial breeding of salmonids in specialized farms that will allow obtaining high quality products and reducing their costs. Key words:rainbow trout, brown trout, brook trout, incubation, free embryos, larvae, fry, young-of-the-year.
The effect of feed residues on the quality of aquatic environment in circulating aquaculture systems of african catfish (Clarias gariepinus (Burchell, 1822))
Authors:   Institute of Hydrobiology of the National Academy of Sciences of Ukraine, Kyiv, Krot Yu. , Medovnyk D. ,   Institute of Hydrobiology of the National Academy of Sciences of Ukraine, Kyiv, Krasiuk Yu. ,   Institute of Hydrobiology of the National Academy of Sciences of Ukraine, Kyiv, Kudriavtseva D. ,   Institute of Hydrobiology of the National Academy of Sciences of Ukraine, Kyiv
Published: December 2021

Purpose. To study the peculiarities of relationships between the aquatic environment and the extruded feed residues in the circulating aquaculture systems intended for growing Clarias gariepinus, and changes in the concentrations of inorganic nitrogen compounds and phosphorus phosphates. Methodology. The object of study is the quality of the aquatic environment when modeling the food load in accordance with feeding standards of different age groups of Cl. gariepinus. Water quality in experimental tanks was determined by analytical methods. Findings. It was found that the intake of extruded feed residues into the aquatic environment leads to a deterioration in its quality due to an increase in the concentration of compounds of inorganic nitrogen and phosphorus of phosphates, which negatively affects the vital activity of Cl. gariepinus. Nitrification processes are activated under conditions of sufficient dissolved oxygen content in the environment. The overload of the aquatic environment with organic matter promotes the bacterial transformation processes of nitrogen and phosphorus compounds, which are characterized by the predominance of the ammonification process and the suppression of oxidative processes. Upon completion of the mineralization of the excess organic matter, the appearance of a sufficient amount of dissolved oxygen activates ammonium oxidation and intensifies nitrification process. The leading factors in the ammonification and nitrification processes in an environment saturated with organic matter include the dissolved oxygen content, which regulates the activity ratio of anaerobic amonifying and aerobic nitrifying microflora. Optimum aeration in Cl. gariepinus cultivation systems is determined not only by the direct physiological needs of fish, but also by the need to maintain a sufficient content of dissolved oxygen to ensure nitrification processes. Originality. The study investigated the effect of the food load on the quality of aquatic environment in the circulating aquaculture systems for Cl. gariepinus rearing. Practical value. The study results can be used to optimize Cl. gariepinus growing methods in circulating aquaculture systems with adjustable parameters at high stocking densities. Key words: African catfish, quality of the aquatic environment, food load, inorganic nitrogen compounds, phosphorus phosphate content, circulating adjustable systems.
Some Aspects of the Geochemistry and Natural Radioactivity of the Azov Deposit Ores
Authors:   M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of the NAS of Ukraine, Sheremet E.М. , Nikolaev I.Yu. ,   M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of the NAS of Ukraine, Sietaia L.D. ,   M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of the NAS of Ukraine, Strekozov S.М. ,   M.P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation of the NAS of Ukraine
Published: December 2021

The analysis of the Azov deposit of zirconium-rare earth ores as the object capable on qualitative and quantitative parameters to become key for creation and modernization of rare earth subsectors of the industry of Ukraine is carried out. On the basis of the generalized characteristics of zirconium-rare earth mineralization, conclusions were drawn regarding the nature of the increased radioactivity at the Azov deposit, which is mainly due to the presence of certain minerals in the ores. The actual radioactive minerals were found only as inclusions in zircon and do not make a significant contribution to the natural radioactivity of ores. It has been established that the radioactivity is uranium-thorium due to the inclusion of these elements in the composition of the aforementioned minerals. The results of the radiation-hygienic assessment of core samples from the deposit are presented. According to the existing standards, the enclosing rocks of the supra-ore and under-ore strata can be used in all types of construction without restrictions. The ores of the deposit are assigned to the third class in terms of the level of effective specific activity. It was found that there is a significant direct relationship between gamma activity and the total REE content in the field. There is also a correlation between the content of U and Th, the dose rate of γ-radiation and the content of the total REE. It was shown that there is no relationship between these indicators and the ZrO2 content. Analysis of the gamma-ray logs showed the possibility of confidently drawing the boundaries of the ore intervals and fixing the inter-ore intervals. The main stages of the technological process of integrated development, enrichment, processing and storage of enrichment tailings, slags and sludge, which ensure the minimum impact of production on the environment and human health, have been determined.
Christian Identity y el paradigma teo-político de Wesley Swift en el contexto de la formación del cristianismo antisemita estadounidense
Authors: Bochicchio Ana-Laura
Published: December 2021

Wesley Swift fue un ministro religioso estadounidense con un rol clave en la formación de Christian Identity, paradigma teo-político cristiano antisemita al servicio de la extrema derecha de la posguerra. Este artículo rastrea las influencias que inspiraron a Swift y sus re-significaciones a la luz de las necesidades de la extrema derecha en el contexto específico de paranoia general durante las primeras décadas de la Guerra Fría. Analizar la construcción de teo-política de Swift a partir de su antropología, soteriología, demonología y escatología permite comprender el proceso de génesis de un culto como Christian Identity, el cual parece marginal y exótico, pero tiene mucho que ver con su coyuntura de surgimiento.
Mohammed bin Salman: legitimidad y nuevos desafíos
Authors: Teruel Ignacio
Published: December 2021

El presente artículo tiene por objetivo analizar la legitimidad del príncipe heredero de Arabia Saudita, Mohammed bin Salman, considerando los pilares históricos de legitimación de la corona y su situación actual. La investigación fue abordada desde un enfoque cualitativo y se utilizó el método hipotético-deductivo, formulando una pregunta guía de la investigación y estableciendo, a partir de ella, los objetivos y la hipótesis del trabajo, la cual será comprobada utilizando la reflexión racional y la observación de la realidad, mediante un análisis documental de libros impresos y digitales, notas periodísticas, publicaciones en revistas electrónicas e informes gubernamentales. Dicha hipótesis es que la legitimidad de Mohammed bin Salman se encuentra debilitada a causa de su creciente personalismo, que rompe con la cohesión dentro de la familia real saudí, por la crisis económica, que amenaza con las promesas de modernización y estabilidad económica y por sus constantes represiones a toda oposición, que cuestionan su supuesta imagen reformista.
Políticas sin enfoque de derechos: Acuerdo Nacional por el Desarrollo y la Paz de La Araucanía
Authors: Mora-Galleguillos Gabriel
Published: December 2021

El presente artículo tiene como propósito analizar críticamente la política pública Acuerdo Nacional por el Desarrollo y la Paz en La Araucanía presentada en 2018 por el gobierno de Sebastián Piñera como la manera de dar solución al histórico conflicto que acontece entre diferentes actores estatales, privados y comunidades Mapuche. Para tal fin, se utilizó un abordaje interpretativo de análisis de discurso respecto a la política pública puesto en relación con el enfoque en derechos humanos, en específico en derechos indígenas, buscando identificar si el “Acuerdo” subsana las demandas históricas más importantes emanadas desde organizaciones Mapuche y que son materia de protección en diferentes organismos internacionales, derechos vulnerado por el Estado de Chile según distintos informes citados. Como principal hallazgo, se ha identificado una orientación marcadamente económica en la propuesta de resolución del conflicto que beneficia a otros actores no Mapuche por sobre la restitución de tierras o el reconocimiento por una mayor autodeterminación política.
Trasladar para despojar: la marginación de los indios Chitareros del valle de Suratá de sus cofradías en el Virreinato de Nueva Granada, 1752-1795
Authors: Monroy-Merchán María del Pilar
Published: December 2021

El artículo analiza el desarrollo de las cofradías del pueblo de indios de Suratá antes y después de las reformas borbónicas del siglo XVIII. Mediante los Libros de cofradías del Santo Ecce Homo y del Santísimo Sacramento y diversas fuentes primarias del pueblo de indios de Suratá, se expone el proceso de traslado de la población indígena de sus asentamientos originales para la construcción del pueblo y la asignación de tierras de resguardo. Luego se indaga sobre la agregación de pueblos indios como resultado del cambio del sistema productivo regional que buscaba ampliar la circulación de la tierra. El objetivo fundamental es mostrar cómo en un contexto de traslados se desarrollaron las cofradías en el pueblo y cómo en estas los Chitareros lograron reconstituirse étnicamente. Finalmente, se concluye que la dinámica de traslados determinó la marginación del elemento indígena al interior de las cofradías quedando estas en manos de vecinos, españoles y blancos pobres producto del regalismo borbónico que promovió la parroquialización y el despojo de las tierras de resguardo.
Modernización estatal como necesidad para el futuro: el Frente Nacional, 1958-1974
Authors: Guisao-Álvarez Juan-Daniel
Published: December 2021

Este artículo describe la forma como se abordó la modernización del Estado durante el Frente Nacional (1958-1974). Intencionalidad vista como una necesidad para construir un futuro mejor por medio de la inversión en desarrollo social, posibilitar una democracia saludable y solucionar por esta vía el conflicto presente en Colombia. Lo anterior en el contexto de la Guerra Fría y el encuentro de los proyectos políticos de las potencias mundiales. Los diferentes periodos presidenciales que tuvo el Frente Nacional se analizan, sus apuestas y reformas, además de las relaciones que tuvieron con Estados Unidos y el lugar que ocuparon los militares y la clase media, mostrando así, la respuesta que tales medidas suscitaron en la fuerza pública y la población civil. Se concluye entonces que, un periodo de apertura y oportunidades sociales enmarcadas en un proyecto como el de la modernización de Estado, liderado por Estados Unidos, alteró los ánimos de la sociedad e hizo que se presentaran críticas a la capacidad que tenían las instituciones estatales para brindar mejores condiciones de vida.
“Vivir en policía”: reformas a la moral y las costumbres en Santa Fe de Antioquia y Medellín, 1760-1810
Authors: Pérez-Naranjo Ana-María
Published: December 2021

El objetivo de este artículo es analizar los diferentes mecanismos que buscaron ordenar y controlar a la población considerada “salvaje” en la provincia de Antioquia, es decir, la plebe. La inmoralidad de los pobladores fue el eje sobre el que giró el discurso de los gobernantes y de la elite y cuya acción e implicación se reflejó, entre otros factores, en los juicios criminales de la época. El presente artículo tiene un enfoque cualitativo, determinado a partir del análisis de los discursos tanto de la elite como de los funcionarios. De la misma manera, se examinaron bandos de buen gobierno, regulaciones y ordenanzas. Finalmente, se revisó documentación de archivos regionales, especialmente, aquella que reposa en el Archivo Histórico de Medellín y en el Archivo Histórico de Antioquia. A partir de las diferentes fuentes consultadas, se identificó hasta qué punto el proyecto de reforma a la moral y las costumbres pudo consolidarse en la provincia, reconociendo cómo las calles, la noche y el escándalo, fueron palabras recurrentes en todos los casos criminales contra la gente de “estragada costumbre”.
La democracia, la educación y la economía
Authors: Flórez Calderón Mauro
Published: December 2021

En estas páginas se analizan las relaciones macro fundamentales existentes entre los pilares básicos de la sociedad, como son la educación, la economía y la democracia; y se identifican los lastres que afectan la democracia, además se plantea como única y real solución de nuestros problemas “el fortalecimiento y evolución del sistema educativo”.
Simulación y análisis de un segmento de proceso. Parte II: estabilidad y convergencia
Authors: Bogoya Maldonado Daniel
Published: December 2021

Este es el segundo de una serie de trabajos que ilustran las características y potencialidades de la simulación matemática de un segmento de proceso químico en estado estable, aplicada en microcomputadores digitales, con miras al análisis y diseño de procesos. Aquí se estudia la estabilidad y la convergencia de los cálculos, en cuanto comportamiento intrínseco de la simulación, en función de la sensibilidad del sistema, la inicialización de las variables iteradoras, el tamaño de error requerido y el método numérico empleado. El análisis se presenta para un cálculo iterativo bifuncional bivariado, mediante la simulación modular secuencial.
Humedad de equilibrio y calor latente de vaporización del ajonjolí. Sésamun indicum L.
Authors: Ospina M. Julio E. , Cuervo A. Sandra P.
Published: December 2021

El ajonjolí (Sésamun indicum L.), es una oleaginosa originaria de África y cultivada en las regiones tropicales y subtropicales de Asia y América. A los 110 días de sembrada se cosecha la semilla la cual se utiliza como materia prima especialmente en la industria de grasas y aceites comestibles.
Actualmente se pierden en Colombia, un alto porcentaje de semillas durante el proceso de secado natural en el campo. Debido a la falta de información técnica, científica en secado y almacenamiento del grano de ajonjolí se procedió a estudiar la metodología para determinar, el contenido de humedad por el método de la estufa, las curvas y modelo para cuantificar la humedad de equilibrio y el calor latente de vaporización.
Transporte neumático de harina
Authors: Duarte Torres Alberto , Fernández Velandia Pedro , Peñuela Beltrán Orlando
Published: December 2021

En el presente artículo se analiza la información obtenida en las líneas de transporte neumático de una empresa productora de harina de maíz y sus derivados con el propósito de obtener criterios para el cambio de escala, diseño, y control de sistemas similares.
Propuesta numérica para el cálculo generalizado del factor de efectividad
Authors: Rangel Jara Hermes A. , Spinel Gómez Jorge E.
Published: December 2021

El presente trabajo desarrolla y pone a prueba una propuesta numérica de tipo generalizado para calcular el factor de efectividad de una pastilla catalítica. La estrategia numérica se elabora a partir del análisis del sistema acoplado de ecuaciones diferenciales, originado de la aplicación de los principios de conservación de masa y energía a los fenómenos de transferencia de masa, calor y de la reacción química, bajo una condición estable.
Condiciones de la superficie deslizamientos con falla
Authors: Sierra B. María Cecilia , González G. Álvaro J.
Published: December 2021

Se modelan seis (6) taludes con diferentes ángulos de inclinación y peso unitario de 1.8 ton/m3, módulo de Young de 500 ton/m2 y relación de Poisson de 0.45. En cada uno de estos taludes se calculan los esfuerzos a través del talud y se determinan los puntos que estén sometidos a mayores esfuerzos cortantes, correspondiendo estos a los estados de esfuerzos más críticos. La ubicación de estos puntos es por donde comenzaré y terminaré la superficie de falla. Se obtiene un gráfico de diseño que permite obtener la pendiente máxima que debe tener un talud para que no se presente falla local en ningún punto.
La eficiencia de los algoritmos
Authors: Giraldo Echeverri Gloria Inés
Published: December 2021

Al enfrentarse a la tarea de desarrollo de software es común encontrarse en la situación de tener que resolver un problema dado a través del algoritmo correcto. Sin embargo, algunos algoritmos correctos son mejores o más eficientes que otros. Qué significa la eficiencia de un algoritmo?. El presente artículo, pretende de una forma sencilla responder esta pregunta.
Resultados de estudios en mecánica de terrenos aplicados a la minería del carbón mediante métodos numéricos
Authors: Correa Arroyave Álvaro
Published: December 2021

La primera parte de este artículo, al que referimos al lector interesado, fue publicada en la entrega número 25 de esta misma revista. En él se dieron los fundamentos de los métodos empleados en la Geomecánica Minera. En esta segunda parte nos hemos concentrado en los métodos numéricos para estudiar tres tipos de problemas generados por la explotación de minas, que si bien, en el texto insistimos en minas de carbón, sus resultados son igualmente válidos para otros yacimientos como los de caliza, yeso y mineral de hierro, entre otros.
Microorganisms causing of clinical pathologies in canines and domestic felines in Valledupar, Colombia
Authors: Hinojosa M. C. , Cañate A. S. , Herrera P. C.
Published: December 2021

The pathologies caused by microbial groups generate health risks in domestic dogs and cats; showing a zoonotic potential and producing affections in humans. According to that background, the purpose of this study was to establish the main microorganisms causing clinical pathologies in domestic dogs and cats by reviewing medical records in a veterinary clinic in Valledupar, Colombia. In order to do that, a retrospective study was conducted with clinical histories of dogs and cats admitted during 2017 and 2018 to the veterinary clinic “Mis Mejores Amigos”. Based on the information, a descriptive, explanatory and statistical analysis was applied, the latter by means of a Sperman correlation to evaluate the relationship between race, sex, age, microbial group and pathology-pathogen. From a total of 462 reports of canines and felines admitted to the clinic, a total of 273 diagnoses were obtained. 4% of the felines and 24% of the canines were affected by some microbial group. The most prevalent microorganisms in canines were Ancylostoma spp. (9 %) Entamoeba histolytica (5%) Ehrlichia spp. (5%), and Isospora sp. (5%) while in felines were Haemobartonella felis (20%) and Haemobartonella spp. (17%). It was determined that there is only correlation between the age of felines and the microbial group that affects them, in addition to the pathology presented with the pathogen. It was observed a high percentage of Ancylostoma sp. (9%) in canines of mongrel and French Poodle breeds whilst in felines was found the bacterium Haemobartonella felis in 20% of the mongrel breeds.