bluuebunny/crossref_metadata_2025 huggingface dataset:
POTENSI CAMPURAN MINYAK GORENG SISA DAN MINYAK JARAK PAGAR SEBAGAI BIODIESEL UNTUK PEMBANGKIT LISTRIK BIOSOLAR
Authors: Camalia Nur , Habibah Ummul , Taris Giri Aufar , Putri Nabila Dwi , Annisa Putri , Alfiyani Alfiyani , Nurulita Bela
Published: March 2023

Industrialisasi dan peningkatan populasi begitu pesat telah menyebabkan permintaan energi yang besar dalam beberapa tahun terakhir. Demi mengurangi ketergantungan akan impor minyak mentah dari luar negeri maka pengembangan potensi sumber daya alam di Indonesia banyak dilakukan para peneliti untuk mengembangkan bahan bakar alternatif dari minyak non-pangan (non-edible oil). Indonesia adalah negara agro-kehutanan yang luas, bahan bakar nabati dari produk pertanian yang non-pangan merupakan sumber alternatif energi terbarukan yang ideal. Lebih dari 300 bahan baku telah diidentifikasi yang dapat digunakan untuk produksi biodiesel. Pada penelitian ini pembuatan biodiesel dilakukan dengan menggunakan limbah minyak goreng dan minyak jarak pagar, metanol dan perbandingan katalis basa kalium hidroksida (KOH) melalui reaksi transesterifikasi. Tujuan penelitian ini adalah membuat biodiesel dari campuran limbah minyak goreng dan minyak jarak pagar sehingga dapat dijadikan bahan bakar alternatif diesel, serta memanfaatkan limbah minyak goreng dan minyak jarak pagar agar memiliki nilai guna yang tinggi biodiesel untuk transportasi dan listrik diindonesia. Biodiesel yang dihasilkan kemudian dianalisis dengan melihat spesifikasi sifat fisikokimia biodiesel. Dalam penelitian ini proses transesterifikasi biodiesel campuran limbah minyak goreng dan minyak jarak pagar dapat menghasilkan rata rata 90an % metil ester. Kemudian dilakukan pencampuran biodiesel dan solar dengan komposisi campuran 70% solar 30 % Biodiesel Selanjutnya dilakukan uji karakteristik biodiesel 100% dan B50 yang meliputi nilai kalor, oksidasi, flash point, iodine value, acid value, viskositas dan densitas. Berdasarkan hasil tersebut, diketahui bahwa pencampuran limbah minyak goreng dengan minyak jarak pagar secara signifikan meningkatkan sifat fisikokimia metil ester sehingga menunjukkan bahwa kandungan energi metil ester sebanding dengan diesel. Adapun Sifat-sifat campuran bahan bakar biosolar B50 menunjukan masih dalam batas sesuai spesifikasi ASTM D6751 dan EN 14214. Karena itu campuran biodiesel dan solar cocok untuk diesel mesin tanpa modifikasi, sehingga menjadi solusi untuk sektor listrik di Indonesia
The Relationship Between Levels of Sex Steroids and Coronary Collateral Circulation in Men Patients with Coronary Artery Disease
Authors: Erdoğan Aslan , Çakmak Ender Özgün , Güler Ahmet , Kılıçgedik Alev , Kırma Cevat
Published: March 2023

Introduction: Coronary collateral circulation (CCC) is a natural bypass system for restoring blood flow, and a well-developed CCC is held to protect myocardial function and improve survival after coronary obstruction in patients with coronary artery disease (CAD). Sex steroids have been suggested as potentially hampering the course of CAD progression. We explored the relationship between the serum levels of sex steroids and CCC.

Patients and Methods: A total of 115 males with chronic coronary artery disease who had at least one total coronary artery occlusion were included. Patients were divided into two groups: a well CCC group (Rentrop grades 2-3, n= 64) and a poorly developed CCC group (Rentrop grades 0-1, n= 51). Serum levels of total testosterone, free testosterone, sex hormone-binding globulin (SHBG), and dehydroepiandrosterone sulfate (DHEA-S) were recorded. A p-value below 0.05 was accepted as significant in all analyses. The confidence interval was accepted as 95%.

Results: Serum total testosterone (ng/dL; 274.5 ± 57.7 vs. 329 ± 64.8, p< 0.001), free testosterone (pg/mL; 8.2 ± 2.4 vs. 12 ± 3.2, p< 0.001), DHEAS [µg/dL; 111 (58) vs. 160 (85.5), p< 0.001] and SHBG concentrations (nmol/L; 29.3 ± 8.6 vs. 33.2 ± 10.2; p= 0.027) were significantly higher in the well coronary collateral group (WCG). According to the results of multiple regression analyses, diabetes [OR= 3.56, CI (1.26-3.5) p= 0.017], free testosterone level [OR= 1.57, CI (1.26-1.96), p< 0.001] and total testosterone level [OR= 1.01, CI (1.00-1.02), p= 0.009] were determined to be independent predictors.

Conclusion: This study showed that a high level of sex steroids was a predictor of good collateral development in patients with chronic CAD.
An Imaginary Capital City and a Real Province in L. Gaidai’s Сomedy Incognito from St. Petersburg
Authors:   State Institute for Art Studies, Evallyo V.D. ,   Russian State University for the Humanities
Published: March 2023

The article analyzes the film by Leonid Gaidai Incognito from St. Petersburg (1977) based on the N.V. Gogol’s play The Government Inspector. The author draws attention to the preservation of theatrical aesthetics, which is revealed in the spatial accents and the interaction of the characters. The comedic core of the play, the misunderstanding, is enhanced by the eccentric accents characteristic of the aesthetics of silent cinema. The key dramatic structure of the film is the various types of urban spaces — an imaginary idea of capital city and a real provincial town, as well as the dialogue of their artistic incarnations in the film. The activation of comedy effects takes place at the intersection of extremely serious elements and their childishly naive interpretation and implementation, decoration and attempts to imitate the surrounding space with “adult” (capital) images. The “unofficial” side of the artistic world is exposed by its permanent presence on the periphery of the frame and the stubborn, but not articulated desire to return to familiar forms. The film traces the idea that regardless of the hierarchical way of life, the form of statehood, the existence of a Russian person remains unshakable, only external attributes change in accordance with ideological dominants, but at a fundamental level, the established way of life does not undergo significant changes. Incognito from St. Petersburg can be described as the intellectual apogee of the interaction of various aesthetics and comedic dominants. Masterfully alternating escalation and aggravation with containment and smoothing Gaidai keeps tension and dynamic of the dramaturgy. Eccentric elements, subtly woven into the artistic fabric, allowed the director to inscribe and remove Gogol’s motifs in the prism of his own era and its problems.
Pierrick Sorin. Comedy in Video Art
Authors:   St. Petersburg Humanitarian University of Trade Unions, Yugay I.I.
Published: March 2023

The article reveals the genre-stylistic specificity of artworks of the French video artist Pierrick Sorin, created between the 1980s and the 2020s. It studies the methods and techniques characteristic of P. Sorin’s work, particular attention being paid to his use of comic techniques. The novelty of the research lies in the consideration of P. Sorin’s creative work as an integral artistic system in its development. The relevance of the present study is determined by the need to expand ideas about the principles of shaping and the features of drama in the genres of contemporary art. The article shows that P. Sorin developed the techniques and methods of video art in an original and spectacular way. Out of the creative methods used by the artist, the author of the article focuses on the following ones: the attraction of expressive means of other arts (cinema, circus, music hall, variety theatre, etc.) and the combination of modern technical and technological solutions with the style of comedy films, buffoonery, and clowning, which is manifested in the plots, expressive means, the specifics of the characters. The classification of P. Sorin’s works proposed by the author includes video art, optical theatres (miniature installations), stage performances and scenographic works. The author comes to the following conclusions: the plot structure of P. Sorin’s works, depending on the genre, includes miniature scenes-sketches, parody films that repeat scenario designs of the originals, and series of sketches combined in a holistic performance by means of recapitulation. In his scenographic works, P. Sorin creates a comic discourse, a play with the viewer based on technical attractions. The comic techniques characteristic of P. Sorin’s work are: comic absurdity, illogical or impossible combination of elements, the method of inconsistency, the method of unexpected, repetition, and the use of taboo topics.
The Theories of Humor in the Study of the Clown Figure
Authors:   NP “Theatre-EX”, Semenova E.A.
Published: March 2023

This article continues the research of the author in the field of studying the phenomenon of a clown. The author discusses the problem of polar interpretations of the figure of a clown in scientific discourse, where there is a noticeable absence of convincing art history and cultural theories and concepts that can explain the connection between the figure of a clown and the phenomenon of laughter and humour. It is noted that, despite the fact that most studies focus on clown laughter, they do not analyse its specifics. In connection with the problem posed, the author suggests shifting away from the established paradigm of considering a clown as an artistic image and a comic character, and puts forward a hypothesis, according to which evolutionary theories of laughter and humour hold considerable verification potential for studying the clown figure. The author concludes that based on A.G. Kozintsev’s interdisciplinary evolutionary theory of laughter and the theory of humour, it is possible to prove the relationship between the clown phenomenon and the nature of laughter. The article discusses the assumption that man is the only species capable of semiosis and humorous meta-reflection, due to which he can be considered the most superficial hominid or “a flat animal” (the concept of G. Deleuze) that has humour, which is equivalent to a clown. The results of this research can be applied when studying the peculiarities of a clown as an artistic image (representation) in a work of art.
Estimating enhancement ratios of nitrogen dioxide, carbon monoxide and carbon dioxide using satellite observations
Authors: MacDonald Cameron G. , Mastrogiacomo Jon-Paul , Laughner Joshua L. , Hedelius Jacob K. , Nassar Ray , Wunch Debra
Published: March 2023

Abstract. Using co-located space-based measurements of carbon dioxide (CO2) from the Orbiting Carbon Observatory-2 and Orbiting Carbon Observatory-3 (OCO-2/3) and carbon monoxide (CO) and nitrogen dioxide (NO2) from the TROPOspheric Monitoring Instrument (TROPOMI), we calculate total column enhancements for observations influenced by anthropogenic emissions from urban regions relative to clean background values. We apply this method to observations taken over or downwind of 27 large (population of >1 million) urban areas from around the world. Enhancement ratios between species are calculated and compared to emissions ratios derived from four globally gridded anthropogenic emissions inventories. We find that these global inventories underestimate CO emissions in many North American and European cities relative to our observed enhancement ratios, while smaller differences were found for NO2 emissions. We further demonstrate that the calculation and intercomparison of enhancement ratios of multiple tracers can help to identify the underlying biases leading to disagreement between observations and inventories. Additionally, we use high-resolution CO2 inventories for two cities (Los Angeles and Indianapolis) to estimate emissions of CO and NO2 using our calculated enhancement ratios and find good agreement with both a previous modelling study for the megacity of Los Angeles and California Air Resources Board (CARB) inventory estimates.
Characterisations of Europe's integrated water vapour and assessments of atmospheric reanalyses using more than 2 decades of ground-based GPS
Authors: Yuan Peng , Van Malderen Roeland , Yin Xungang , Vogelmann Hannes , Jiang Weiping , Awange Joseph , Heck Bernhard , Kutterer Hansjörg
Published: March 2023

Abstract. The ground-based Global Positioning System (GPS) has been
used extensively to retrieve integrated water vapour (IWV) and has been
adopted as a unique tool for the assessments of atmospheric reanalyses. In
this study, we investigated the multi-temporal-scale variabilities and
trends of IWV over Europe by using IWV time series from 108 GPS stations for more than 2 decades (1994–2018). We then adopted the GPS IWV as a
reference to assess six commonly used atmospheric reanalyses, namely the Climate Forecast System
Reanalysis (CFSR); ERA5; ERA-Interim; the Japanese 55-year Reanalysis
(JRA-55); the Modern-Era Retrospective
Analysis for Research and Applications, version 2 (MERRA-2); and NCEP-DOE AMIP-II Reanalysis (NCEP-2). The GPS results show that the
peaks of the diurnal harmonics are within 15:00–21:00 in local solar time at 90 % of the stations. The diurnal amplitudes are 0–1.2 kg m−2 (0 %–8 % of the daily mean IWV), and they are found to be related to seasons and locations with different mechanisms, such as solar heating, land–sea breeze, and orographic circulation. However, mismatches in the diurnal cycle of ERA5 IWV between 09:00 and 10:00 UTC as well as between 21:00 and 22:00 UTC were found and evaluated for the first time, and they can be attributed to the edge effect in each ERA5 assimilation cycle. The average ERA5 IWV shifts are −0.08 and 0.19 kg m−2 at the two epochs, and they were found
to be more significant in summer and in the Alps and in Eastern and central
Europe in some cases. Nevertheless, ERA5 outperforms the other reanalyses in
reproducing diurnal IWV anomalies at all the 1-, 3-, and 6-hourly temporal
resolutions. ERA5 is also superior to the others in modelling the annual
cycle and linear trend of IWV. For instance, the IWV trend differences
between ERA5 and GPS are quite small, with a mean value and a standard
deviation of 0.01 % per decade and 0.97 % per decade,
respectively. However, due to significant discrepancies with respect to GPS,
CFSR and NCEP-2 are not recommended for the analysis of IWV trends over
southern Europe and the whole of Europe, respectively.
Migrating and nonmigrating tidal signatures in sporadic E layer occurrence rates
Authors: Jacobi Christoph , Kandieva Kanykei , Arras Christina
Published: March 2023

Abstract. We analyse sporadic E (ES) layer occurrence rates (OR) obtained from ionospheric GPS radio occultation measurements by the FORMOSAT-3/COSMIC constellation. Maximum OR are seen at 95–105 km altitude. Midlatitude ES layers are mainly due to wind shear in the presence of tides, and the strongest signals are the migrating diurnal and semidiurnal components. Especially in the Southern Hemisphere, nonmigrating components such as a diurnal westward wave 2 and a semidiurnal westward wave 1 are also visible, especially at higher latitudes. Near the equator, a strong diurnal eastward wavenumber 3 component and a semidiurnal eastward wavenumber 2 component occur in summer and autumn. Terdiurnal and quarterdiurnal components are weaker than the diurnal and semidiurnal ones.
Measurement and transformation of continuously modulated fields using a short-time measurement approach
Authors: Faul Fabian T. , Daubmeier Jana , Eibert Thomas F.
Published: March 2023

Abstract. Near-field measurements, which are performed in-situ, may suffer from the fact that the antenna under test (AUT) cannot be accessed to transmit or receive a specifically tailored test signal. In some scenarios, it might also be desired to test the AUT during its real operation state, especially when it comes to the verification of antenna systems. Therefore, the need to handle time- and space-modulated fields in combination with a time-harmonic near-field to far-field transformation (NFFFT) arises. For the case where unmanned aerial vehicles (UAVs) carry the field probe in in-situ measurement scenarios, long observation times, required for the resolution of the frequency spectra of modulated fields, are detrimental due to the UAV movement resulting in blurred measurement positions. The short-time measurement (STM) approach, presented in this article, offers a way to transform the measured field data using a time-harmonic NFFFT with short observation times for the collection of the individual field samples.
Measurements are shown which demonstrate the applicability of the STM approach for the measurement and transformation of continuously time-modulated fields in different measurement scenarios.
Deadly disasters in southeastern South America: flash floods and landslides of February 2022 in Petrópolis, Rio de Janeiro
Authors: Alcântara Enner , Marengo José A. , Mantovani José , Londe Luciana R. , San Rachel Lau Yu , Park Edward , Lin Yunung Nina , Wang Jingyu , Mendes Tatiana , Cunha Ana Paula , Pampuch Luana , Seluchi Marcelo , Simões Silvio , Cuartas Luz Adriana , Goncalves Demerval , Massi Klécia , Alvalá Regina , Moraes Osvaldo , Filho Carlos Souza , Mendes Rodolfo , Nobre Carlos
Published: March 2023

Abstract. On 15 February 2022, the city of Petrópolis in the highlands of the state of Rio de Janeiro, Brazil, received an unusually high volume of rain within 3 h (258 mm), generated by a strongly invigorated mesoscale convective system. It resulted in flash floods and subsequent landslides that caused the deadliest landslide disaster recorded in Petrópolis, with 231 fatalities. In this paper, we analyzed the root causes and the key triggering factors of this landslide disaster by assessing the spatial relationship of landslide occurrence with various environmental factors. Rainfall data were retrieved from 1977 to 2022 (a combination of ground weather stations and the Climate Hazards Group InfraRed Precipitation – CHIRPS). Remotely sensed data were used to map the landslide scars, soil moisture, terrain attributes, line-of-sight displacement (land surface deformation), and urban sprawling (1985–2020). The results showed that the average monthly rainfall for February 2022 was 200 mm, the heaviest recorded in Petrópolis since 1932. Heavy rainfall was also recorded mostly in regions where the landslide occurred, according to analyses of the rainfall spatial distribution. As for terrain, 23 % of slopes between 45–60∘ had landslide occurrences and east-facing slopes appeared to be the most conducive for landslides as they recorded landslide occurrences of about 9 % to 11 %. Regarding the soil moisture, higher variability was found in the lower altitude (842 m) where the residential area is concentrated. Based on our land deformation assessment, the area is geologically stable, and the landslide occurred only in the thin layer at the surface. Out of the 1700 buildings found in the region of interest, 1021 are on the slope between 20 to 45∘ and about 60 houses were directly affected by the landslides. As such, we conclude that the heavy rainfall was not the only cause responsible for the catastrophic event of 15 February 2022; a combination of unplanned urban growth on slopes between 45–60∘, removal of vegetation, and the absence of inspection were also expressive driving forces of this disaster.
Snow sensitivity to temperature and precipitation change during compound cold–hot and wet–dry seasons in the Pyrenees
Authors: Bonsoms Josep , López-Moreno Juan Ignacio , Alonso-González Esteban
Published: March 2023

Abstract. The Mediterranean Basin has experienced one of the highest warming
rates on earth during the last few decades, and climate projections predict
water scarcity in the future. Mid-latitude Mediterranean mountain areas,
such as the Pyrenees, play a key role in the hydrological resources for the
highly populated lowland areas. However, there are still large uncertainties
about the impact of climate change on snowpack in the high mountain ranges
of this region. Here, we perform a snow sensitivity to temperature and
precipitation change analysis of the Pyrenean snowpack (1980–2019 period)
using five key snow–climatological indicators. We analyzed snow sensitivity
to temperature and precipitation during four different compound weather
conditions (cold–dry (CD), cold–wet (CW), warm–dry (WD), and warm–wet (WW))
at low elevations (1500 m), mid elevations (1800 m), and high elevations
(2400 m) in the Pyrenees. In particular, we forced a physically based energy
and mass balance snow model (FSM2), with validation by ground-truth data,
and applied this model to the entire range, with forcing of perturbed
reanalysis climate data for the period 1980 to 2019 as the baseline. The
FSM2 model results successfully reproduced the observed snow depth (HS)
values (R2>0.8), with relative root mean square error and
mean absolute error values less than 10 % of the observed HS values.
Overall, the snow sensitivity to temperature and precipitation change
decreased with elevation and increased towards the eastern Pyrenees. When
the temperature increased progressively at 1 ∘C intervals,
the largest seasonal HS decreases from the baseline were at
+1 ∘C. A 10 % increase in precipitation counterbalanced
the temperature increases (≤1 ∘C) at high elevations
during the coldest months because temperature was far from the isothermal
0 ∘C conditions. The maximal seasonal HS and peak HS max
reductions were during WW seasons, and the minimal reductions were during CD
seasons. During WW (CD) seasons, the seasonal HS decline per degree Celsius
was 37 % (28 %) at low elevations, 34 % (30 %) at mid elevations,
and 27 % (22 %) at high elevations. Further, the peak HS date was on
average anticipated for 2, 3, and 8 d at low, mid, and high elevation,
respectively. Results suggest snow sensitivity to temperature and
precipitation change will be similar at other mid-latitude mountain areas,
where snowpack reductions will have major consequences for the nearby
ecological and socioeconomic systems.
Theories of Antifascism in the Interwar Mediterranean Part II
Authors: Plys Kristin
Published: March 2023

The current proliferation of authoritarianism across both core and periphery is one political articulation of the current crisis of the capitalist world-system. Authoritarianism similarly proliferated in previous periods of crisis, in the 1970s and 1980s in the peripheries, and in the 1930s and 1940s in the core. In Part I of this essay, I detail how world-systems analysts have long been attuned to describing and analyzing chaotic moments in between systemic cycles of hegemony, but less attention has been given to the rise of authoritarianism in these chaotic phases. The multiple crises of hegemonic transition engenders an ideological contestation between Fascism and Communism revealing the limitations of Liberalism, the foundational ideology of the world-system. In such periods of hegemonic breakdown, anarchists developed autonomous strategies of resisting authoritarian rule at both the point of production (the worker-occupied and self-managed workplace) and at the point of leisure (the autonomous zone of the infoshop or café as resources and interventions in the joint struggle against capitalism and authoritarianism. These theories are important to recover for the contemporary fight against a resurgent authoritarianism across the world-system in the current conjuncture.
Reflections on Walden Bello
Authors: Ezcurdia Javier , Anderson James
Published: March 2023

The online censorship and subsequent arrest of scholar-activist Walden Bello is the latest instance of a disconcerting trend during a period of hegemonic crisis. To understand how a respected scholar ended up in jail and in grave legal trouble on very feeble accounts, we have to unpack the full implications of this case, and place it in relation to ongoing structural changes within the world-system—namely, the decline of the United States as global hegemon, the ascendancy of far-right authoritarianism as a popular political framework, and the use of institutions and technologies developed under liberal-democratic rule by authoritarian regimes for purposes of social control during a period of flux. The crisis offers an opportunity to reconfigure systemic arrangements through coordinated solidarity networks characterized by forms of organization and ways of relating that embody prerogatives and values different from those that predominate in the modern world-system and from those that reproduce the capitalist world-economy; which, more likely than not, will have authoritarian tendencies in the decades to come. As a conclusion, we offer some of the possibilities the global left has for these upcoming decades in regards of large coalitions aimed at changing the structure of the world-system at large.
Adoption of Electronic Medical Records in Tertiary Health Care Centres: A Survey of Federal Medical Centres in South-South Nigeria
Authors: Sawyer-George Oyinkepreye , Eyerinmene Friday Jerry
Published: March 2023

The study investigated the adoption of electronic medical records in Federal Medical Centres in Bayelsa and Delta States of Nigeria. The study adopted descriptive survey research design. One hundred and nineteen staff of Departments of Health Records and Information Management of both medical centres participated in the study. Online questionnaire was used for data collection. One hundred and thirty-four soft copies of the questionnaire were distributed to the respondents via personal whatsapp accounts of the respondents and whatsapp platforms of the Health Information Managers Association of Nigeria and the Association of Health Records and Information Management Practitioners of Nigeria to which the respondents belonged. One hundred and nineteen questionnaires were properly completed, retrieved and found usable for data analysis. This produced a response rate of 88.81 %. The data collected were analyzed using weighted mean and standard deviation. Findings showed that the extent of adoption of electronic medical records in the medical centres was low; benefits derived from adoption, which were not perceived much differently by the sampled staff, were enhanced healthcare service delivery/access to medical information, saving of records storage space/cost of medical care, speeding up of treatment process, improvement of confidentiality/security of medical information/timely communication among medical practitioners, reduction of treatment error risk/ patients’ mortality rate/patients’ waiting time and facilitation of clinical decision making; challenges encountered in adoption, which were seen much differently by the records personnel, were poor internet connectivity or network, high cost of ICT equipment, low technical expertise, lack of funds/training/uniform standards and poor power supply.
Automatic paraphrasing tools: an unexpected consequence of addressing student plagiarism and the impact of COVID in distance education settings
Authors: Comas Forgas Rubén , Lancaster Thomas , Curiel Marín Elvira , Touza Garma Carmen
Published: March 2023

Text matching tools employed to detect plagiarism are widely used in universities, but their availability may have pushed students to find ways to evade detection. One such method is the use of automatic paraphrasing software, where assignments can be rewritten with little effort required by students. This paper uses the search engine analytics methodology with data from SEMrush and Google Trends to estimate the level of interest in online automatic paraphrasing tools, focusing on the period 2016 to 2020 and the four countries: the USA, UK, Canada and Australia. The results show a concerning trend, with the number of searches for such tools growing during the period, especially during COVID-19, and notable increases observed during the months where assessment periods take place in universities. The method employed in this study opens up a new avenue of analysis to enrich and supplement the existing knowledge in the field of academic integrity research. The data obtained demonstrates that faculty should be alert for student use of automatic paraphrasing tools and that academic integrity interventions need to be in place across the sector to address this problem.
Analysis of Student’s Error in Solving Multiplication Operations in Terms of Mathematical Concept Understanding
Authors: Paut Livia Eunike , . Kartono , . Zaenuri
Published: March 2023

This research was conducted to analyze students' errors in solving multiplication operations in terms of understanding students' mathematical concepts. The subjects of this study were 57 students from two elementary schools in Kupang Regency, East Nusa Tenggara, Indonesia who had previously studied multiplication concepts and operations. This research method is descriptive quantitative with error analysis using Newman's Error Analysis (NEA). The conclusion of this study is that students' mathematical concept understanding, who the subject of this study is still relatively low with a percentage of 24.2%. The percentage of students' mathematical concept understanding is still in the low category for the first and third indicators, and moderate for the second insdicator. So that the number of errors found in student answers to questions containing the first and second indicators is in the high category, while the second indicator is in the medium category. The mistakes made by students in this study were reading errors, comprehension errors, transformation errors, process skill errors, and encoding errors. The mistakes made by students in solving questions of multiplication operations were caused by their low ability to understand the concept of multiplication.

Keywords: error analysis, mathematical concept understanding, multiplication, elementary school
CONCEPT N.N. MOISEEVA «CO-EVOLUTION OF THE BIOSPHERE AND MAN» AND PROSPECTS FOR THE DEVELOPMENT OF THIS CONCEPT
Authors:   Vysokogorny Geophysical Institute, Zalikhanov M.Ch. , Stepanov S.A. ,   International Independent environmental and political science university
Published: March 2023

The scientific contribution of N.N. Moiseev into the theory of co-evolution of the biosphere and man through the prism of the scientist's concept of universal evolutionism; disclosed the main content of this concept; the role of a scientist in the creation of scientific areas: environmental philosophy and global studies is noted. The scientific school "Nikita Moiseev and the Modern World" is presented as an institutional mechanism for the development of the concept of universal evolutionism, which was supported by the creation of the RAS Commission for the Study of the Scientific Heritage of N.N. Moiseev and the establishment of the scientific award of the Russian Academy of Sciences named after N.N. Moiseev for outstanding work in the field of control systems theory and optimization methods, as well as methodology for studying the problems of human-nature-society relationships.
REDUCTION OF HYDRATE FORMATION DURING OPERATION OF WELLS AT TAGULSKOYE FIELD
Authors:   National Research Tomsk Polytechnic University, Karapuzov I.A. , Kurilovich R.O. ,   National Research Tomsk Polytechnic University, Fedushkin K.G. ,   National Research Tomsk Polytechnic University
Published: March 2023

The analysis of the situation of hydrate formation on the technological equipment installed on the wells of the Tagulskoye field was carried out. The necessity of using Warm Stream technology is substantiated. An economic and technical analysis of the proposed design solutions was carried out. It has been established that the replacement of the existing integrated method for combating hydrate formation with the Warm Stream and bypass valve installation will make it possible to obtain an annual cost savings of 7,011 thousand rubles at the wells of the Tagulskoye field. In addition, there will be a decrease in the number of energy consumers, a decrease in the number of current-carrying wires, and the injection of a hydrate formation inhibitor will be excluded. As a result of the implementation of the project activities, there will be a reduction in the labor costs of workers for replacing the heating cable and working with special equipment, as well as an increase in additional oil production as a result of a decrease in daily downtime of wells.
EFFICIENCY AS A FUNDAMENTAL GENERAL SCIENTIFIC CATEGORY
Authors:   JSC «Central Research Institute  of Radio Engineering named after  аcademician A.I. Berg», Andreev G.I. , Tikhomirov V.A. ,   JSC NPO RIT, Tikhomirov A.V. ,   JSC AVTOVAZ, Marakhovsky A.V. ,   JSC «Central Research Institute  of Radio Engineering named after  аcademician A.I. Berg»
Published: March 2023

Problem statement. The concept of «efficiency» is currently used in many sciences, but scientists put different meanings into this concept. At the same time, the category of efficiency is often replaced by such concepts as effect, quality, reliability, efficiency, efficiency, competitiveness. But with such a substitution of the term “efficiency”, the results of scientific conclusions and recommendations, as a rule, are not always correct. Goal. To prove that efficiency can become a fundamental category only when this concept expresses the patterns inherent in any kind of human activity. Result. At different levels of consistency (universal, special, singular), the “fundamentals” of the category “efficiency” are justified and the algorithm of actions for the correct application of this concept is shown. Practical significance. A critical approach to the differentiation of the concept of efficiency from such concepts as effect, quality, reliability, efficiency, effectiveness is defined.
NEW SOCIAL CLASS: DIGITAL CONSUMER
Authors:   Russian State Social University, Shevchenko D.A.
Published: March 2023

The article is devoted to the study of the role that digitalization plays in consumer behavior, allowing us to see how people's digital behavior spreads from a purely personal area to various sociocultural areas. A new consumer culture is emerging that requires new methods of social and economic management. We are witnessing the emergence of a new social class in Russian society: the digital consumer Modern digitalization of social processes involves the construction of a new interactive social system with feedback, when each person has the opportunity to choose the pace and program of his development in accordance with the availability of free time and the initial personal level. To understand the new interactive social system, it is necessary to take into account the features of the modern period of the social structure, its sociocultural context, which reflects the behavior of people in the digital environment. The modern situation is characterized by features generated by digital influence, which require their interpretation in theory, understanding, development and customization of new tools for managing digital processes, in which the consumer becomes the socio-economic driver of development.
Total quality management and the role in developing supply chain management in Jordan companies
Authors: Jarrah Mufleh Amin AL
Published: March 2023

Total quality management (TQM) stresses strategy development, data collecting, and communication in order to improve the firm's discipline and quality. To be more specific, overall quality management is a management method used to achieve long-term success by focusing on consumers. Therefore, the current study examines the role of total quality management (including design development, continuous improvement, and supplier involvement) in developing supply chain management (SCM) in Jordanian companies. The present research population comprises all Jordanian companies. Using a quantitative research approach, a random sample of 210 workers in Jordanian companies was chosen for the current study. The direct effects results showed that design development, continuous improvement, and supplier involvement had a significant positive effect on supply chain management (p≤0.05).
The effect of supply chain innovation and e-procurement implementation on supply chain performance of manufacturing organization
Authors: Ibrahim Mahdani , Karollah Banta , Mahdani Rimal
Published: March 2023

The purpose of this study is to analyze the effects of the e-procurement on supply chain performance and supply chain innovation. The study also investigates the effect of supply chain innovation on supply chain performance. The research method is a quantitative survey, and the research data is obtained by distributing online questionnaires on a scale from 1 to 7 distributed via social media. Respondents in this study are 250 managers of manufacturing organizations in Indonesia determined by simple random sampling method. The model used in this study is the causality model and to test the hypotheses proposed in this study, the analytical technique used is Structural Equation Modeling (SEM) with SmartPLS software as a data analysis tool. The independent variable of this research is e-procurement implementation, supply chain innovation and the dependent variable is supply chain performance. The stages of data analysis are validity test, reliability test and hypothesis testing. The results of this study indicate that the application of e-procurement had a positive and significant effect on supply chain performance, the application of e-procurement had a positive and significant effect on supply chain innovation, supply chain innovation had a positive and significant effect on supply chain performance and supply chain innovation was able to mediate the effect of e-procurement on supply chain performance.
The impact of TQM on organizational learning: The moderating role of strategic thinking at Jordanian SMEs
Authors: Alsheikh Ghaith Abdulraheem Ali , Bakir Sahar Moh’d Abu , Alzghoul Amro
Published: March 2023

In the workplace of the twenty-first century, there has been a rise in interest in organizational learning. The purpose of this research is to add to the body of knowledge regarding organizational learning, by analyzing how TQM affects organizational learning. Also in this study, we intend to indicate the influence of strategic thinking as moderator on the relationship between TQM and organizational learning. Data were gathered from respondents (N = 306) who were employed in industrial sectors and registered with the Amman stock exchange in Jordan. Furthermore, the study results support the assumption that TQM affects organizational learning. Moreover, the findings confirmed that strategic thinking plays a moderating role in the relationship between organizational learning and TQM, supporting the moderation hypothesis as well. After presenting theoretical and practical implications of the research, limitations and future direction are discussed.
Factors affecting e-supply chain management systems adoption in Jordan: An empirical study
Authors: Hamadneh Samer
Published: March 2023

Recently, there have been a growing number of articles focusing on the benefits of adopting e-SCM systems and the value of such systems in supply chain performance. However, less academic research was devoted to understanding factors affecting the adoption intention of such systems. This study uses the technology, organization, and environment (TOE) framework to examine factors that affect the adoption of e-SCM systems in Jordan, where limited research has been conducted in this country. Through an online survey filled by 251 participants via the LinkedIn website, the study shows that perceived relative advantage, financial resources, employee competency, top management support, competitive pressures, and customer pressure positively impact the adoption intention of e-SCM systems. The findings confirm the association between variables embedded in the TOE framework and the adoption intention of innovative supply chain systems and solutions and support earlier findings. According to the study findings, e-SCM systems providers should focus on the relative advantage these systems offer to increase the likelihood of their adoption.
Characteristic of the spectrum of free amine acids in the blood in drug-resistant pulmonary tuber- culosis and the possibilities of correction of its diregulations
Authors: Djugostran Valeriu , Antipa Vasile , Garaeva Svetlana , Postolatii Galina , Ceapa-Catana Lucia
Published: March 2023

The study is prospective, controlled, monocentric, randomized, descriptive-interventional, which proves the superiority of the treatment of drug – resistant pulmonary tuberculosis patients with thematic methods supplemented by the administration of the hyperosmolar mixture of аmine acids - Aminol and the lymphotropic use of isoniazid solution, compared to the routine medication performed according to the DOTS plus schemes.
The role of migraine-associated symptoms in the clinical picture of migraine pain
Authors: Guzun Cornelia , Odobescu Stela , Grosu Oxana , Rotaru Lilia , Moldovanu Ion
Published: March 2023

Migraine is a disorder of multisensory integration of somatosensory, visual, auditory, olfactory stimuli, which subsequently can lead to various combinations of symptoms: headache, photophobia, phonophobia, nausea/vomiting, osmophobia.The purpose of the study: To isolate the characteristics of pain phenomenon (frequency, duration, and severity of migraine symptoms) in relation to associated symptoms in migraine patients. Materials and Methods: 94 patients with frequent episodic and chronic migraine were included in a cross-sectional study. Research methods used: clinical, descriptive, statistical. Migraine patient questionnaires were used as a research instrument. Primary data were entered into Excel programs and processed in MedCalc. Results and discussion: A statistically significant positive correlation between phonophobia and throbbing headache was observed in the conducted study. Statistically significant positive correlations were found between the duration of a migraine attack (in hours) and some migraine-related symptoms, such as: anxiety, shortness of breath. Conclusions: Thus, intensity rather than duration of headache may be the trigger for most, but not all, of the associated symptoms. This study demonstrated the clinical significance of the pain phenomenon and symptoms associated with migraine. In order to isolate the specificity of migraine attacks and elucidate their features, the study of autonomic symptoms accompanying the pain phenomenon is a particularly important part of establishing a correct diagnosis.
Analisa Karakteristik Daerah Untuk Menentukan Strategi Penagihan Rekening Listrik Konsumen PT PLN (Persero) Yang Efektif dan Efisien Dengan Metode AHP (Analytical Hierarchy Process)
Authors: Whardana Moljoadie Rahmada Mulia , Saputro Adi
Published: March 2023

Like companies that are oriented to the buying and selling business in general, PT PLN (Persero) or PLN also has the same business risk, namely the existence of arrears on account receivables arising from electricity buying and selling transactions with consumers. These arrears cannot be avoided because PLN consumers have different characteristics, one of which is the economic factor of the consumers themselves. In addition, because of force majeure is also one of the causes of arrears in electricity buying and selling transactions, including natural disasters and other calamities. By getting cash in from electricity bills collection, PLN's operations will of course be maintained so that service to customers can be even better. However, it is necessary to carry out an analysis related to the billing mechanism used using external factors to determine customer characteristics based on regional conditions. One method that is relevant and has a consistency value calculation in determining the priority level of criteria is the Analytical Hierarchy Process (AHP) method. The expected results of this study are a system that can provide recommendations for alternative billing strategies based on characteristics per region so that the hierarchy formed is acceptable for decision making.
China-Pakistan Economic Corridor (CPEC): A Threat to India’s Border Security
Authors: Sangkar Manishahz A. P. , Mohd Huda Mohd Ikbal
Published: March 2023

India has been averse to the Belt and Road Initiative (BRI) since its initial launch in 2013 because one of the core components of the initiative, the China-Pakistan Economic Corridor (CPEC), is perceived as violating the country’s sovereignty and territorial integrity. This article discusses the geostrategic execution of the China-Pakistan Economic Corridor (CPEC), which is viewed as a threat and constraint to India's security. The article further analyses the perception of the Indian government towards the forged alliance between China and Pakistan. Along these lines, this disquisition explains the knowledge of how infrastructural techno-political regimes shape the threat towards Indian security. It does so by building on an analysis of India's security strategy on China-Pakistan relations through the initiative of CPEC. The infrastructural techno-political regime of CPEC is discerned as a securitised threat by the Indian government. Infrastructure technology produced by CPEC promotes a securitised discourse of connectivity, flow, and territorial control as a cause of regional tension, national rivalries, unnecessary competitiveness, terrorism, and sovereignty issues. Simultaneously, other political entities might view the same regime as a border security threat.
Representation of reciprocal and cultural conflict in J. M. Coetzee's In the Heart of the Country: A Study in Post-Colonial Context
Authors: Shailesh Sharma
Published: March 2023

This paper is proposed to throw light on reciprocal and cultural conflict in the novel In the Heart of the Country, particularly in post-colonial context. As Coetzee is a linguist and Nobel laureate who has done great efforts to present the concrete and condensed reality of colonial people of South Africa. He has raised issues of colonial oppression and conflict among colonizers and colonized. Coetzee has been recognised as writer of marginalized and apartheid as well as a curtain raiser for presenting the harsh reality of sufferings of colonized. We cannot ignore the fact that post-colonial era has brought great reforms and improvements in the socio-economic conditions of colonized, yet there are various obstacles and challenges which have been inherited in minds of African aboriginal people who were earlier colonized by ''white people''.
The poetry of Swami Vivekananda: An Exploration into the Romanticism
Authors: Vishesh Kumar Pandey  , Dr Sandhya Saxena
Published: March 2023

The present research paper focuses on the Romantic traits and tendencies in the poetry of Swami Vivekananda. Swami Vivekananda is the initial signature of poetry on the manuscript of Indian English literature. Generally applauded as the fiery orator in the world, his poetic introduction has almost been unnoticed by the critical pens. He is not a poet who compiles volume after volume but writes when he is overwhelmed by ‘the spontaneous overflow of powerful feelings’. His poetry is remarkable for various romantic traits. The portrayal of child, love to humanity, love for love’s sake, freedom, imagery and imagination are the echoes of Romanticism in his poetry.  He reminds us of Wordsworth, Coleridge, Shelley and Keats in his instincts and poetic tendencies. His poems, though countable on the finger-tips, are the sublime poetic pieces of artistic culmination. This paper also focuses on the similarities and dissimarities of his poetry with the great poets of the Romantic era.