bluuebunny/crossref_metadata_2025 huggingface dataset:
Evolutionary Game Analysis of Knowledge Sharing among Supply Chain Enterprises Considering Incentive Strategy
Authors: Han Zhengtao
Published: September 2024

This paper aims to explore and enhance the influencing factors which effect the evolution of supply chain knowledge sharing under different incentive strategies. Furthermore, it also helps supply chain managers determine whether incentives are needed and if needed to what extent they are needed to deal with the dynamic changes of factors in the evolution of supply chain knowledge sharing. The evolutionary game model of knowledge sharing without considering incentives is established respectively, and the influence of relevant influencing factors on the evolutionary results of knowledge sharing is analyzed. The results show that enterprises’strategy of selecting knowledge sharing can be attributed to the change by the degree of knowledge complementarity among enterprises when the incentive is not considered. The incentive of supply chain will stimulate knowledge sharing between enterprises but then the incentive coefficient needs to meet certain conditions; can the evolutionary system converge to the state of {knowledge sharing, knowledge sharing}, and the analysis shows that the relationship capital, knowledge’s unit value, knowledge sharing cost, knowledge sharing risk and other factors have significant effects on the evolution rate of knowledge sharing. Finally, based on the research conclusions, the countermeasures and suggestions for supply chain knowledge sharing are proposed.
Pronunciation Difficulties in Cantonese English Learners: A Focus on Segmental Errors
Authors: Zhang Xinting , Zhu Wenhui , Chu Yu
Published: September 2024

This study investigates the pronunciation difficulties faced by Cantonese-speaking English as a Foreign Language (EFL) learners, focusing on segmental errors in both vowels and consonants. A production experiment was conducted with 13 Cantonese university students, examining their performance on carefully selected minimal pairs embedded in short sentences. The results revealed common pronunciation errors, including the substitution of /æ/ with /ɛ/, final consonant devoicing, and /v/ substituted with /w/. These errors were analyzed in relation to the functional load (FL) principle, which emphasizes the importance of phonological contrasts that contribute most to intelligibility. The findings highlight that errors with high FL values, such as /æ/-/ɛ/ and /p/-/b/, should be prioritized in pronunciation instruction to enhance learners’ overall intelligibility. The study concludes with pedagogical implications for teaching pronunciation more effectively in Cantonese EFL contexts.
Actitudes hacia la lengua maya y sus hablantes a partir de procesos migratorios en la ciudad de Mérida: visiones del pasado y del presente
Authors: Sima Lozano Eyder Gabriel
Published: September 2024

Desde la sociolingüística se relatan las actitudes de mayahablantes mayores de 50 años procedentes del interior del estado de Yucatán que habían migrado a la ciudad de Mérida (Yucatán, México). El objetivo es analizar sus actitudes hacia la lengua maya y hacia sí mismos como hablantes, considerando las visiones de la lengua tanto en el pasado, como en el presente, y sus efectos para su transmisión a las nuevas generaciones. A través de entrevistas y observaciones indirectas, y de un análisis de tipo inductivo, encontramos que las personas migrantes expresan actitudes más positivas en la actualidad que en años anteriores. Sin embargo, el mantenimiento y la transmisión del idioma maya en los hijos e hijas no siempre es posible debido a circunstancias de carácter social y educativo.
Services for Academic Libraries in New ITS Era
Authors: Pagade Dr. Prashant S.
Published: September 2024

The advanced academic libraries in the world. The comparison of those two studies produces interesting findings notably an increase in the integration of Purpose of this paper is to document the integration of WB 3.0 Services. Into the working framework of some of the most advanced academic libraries in the world. The comparison of those two studies produces interesting finding notably an increase in the integration of web based services. However when some of the most core web 3.0 Services were examined. User participation was quite low. A quantitative approach to the content Analysis of library web sites was performed to examine the Prominence of twelve pre-determined services. In addition the literature review focuses on the critical opinions expressed regarding the use of these web services by academic libraries highlighting some of the Problems and issues that have been raised but are often overlooked.
Effective Science Communication — A practical guide to surviving as a scientist
Authors: Stevenson Elizabeth
Published: September 2024

Scientists in academia, particularly early career researchers, are required to master a multitude of practices in a higher education context, often learning on the job by a process of incidental osmosis rather than structured training. For example, success in writing grant proposals, presenting and networking at conferences, journal publication, teaching, engaging with publics ‘beyond the ivory tower’, and demonstrating the ‘impact’ of research are essential skills to master to progress an academic career. Training and support in these areas can often be fragmented and/or dependent on good fortune with respect to suitable mentors.
“...I’m Used to Considering It Something Close and Dear” (Patriotic Institute in N.V. Gogol’s Life)
Authors:   A.M. Gorky Institute of World Literature of the Russian Academy of Sciences, Zaitseva Irina A.
Published: September 2024

The article examines one of the fragments of N.V. Gogol’s St. Petersburg biography — his four-year service at the Patriotic Institute (1831–1835). A principle aspect of this topic, the documentary one (assignment to the Institute, registration of leave, payment of salaries, dismissal), is disclosed in sufficient detail (although not entirely due to the loss of sources) in ancient and modern publications. The purpose of this study is different — to try to find out what role a close connection with this educational institution played in the creative destiny and everyday life of Gogol in the first half of the 1830s, how organic the institute’s principles, traditions, and atmosphere turned out to be for him. The article considers “Regulation” — a document regulating the activities of the Institute of April 7, 1827. The research touches upon issues related to Gogol’s substantive and formal working conditions in correlation with the crucial creative component of his life. The article attempts to reconstruct Gogol’s circle of communication within the institute walls and briefly outlines the figures of the people with whom he communicated or could communicate. Among them are notable faces (N.M. Longinov, P.A. Pletnev) and little-known ones (L.F. Wistinghausen, G.P. Bliznetsov, P.N. Myslovsky and I.E. Yakovlev). An attempt to reconstruct the picture of Gogol’s many years of stay at the Patriotic Institute appears as one of the ways to study a significant period of his biography — in the unity of his everyday and creative sides.
Istrati, Rolland, Gorky: The New Facts of Soviet-French Literary Interactions of the 1920s–1930s
Authors:   A.M. Gorky Institute of World Literature of the Russian Academy of Sciences, Arias-Vikhil Marina A.
Published: September 2024

The article analyzes the “Istrati case,” one of the most expressive travelers to the Land of the Soviets. The little-known and unpublished materials from the writers’ personal archives used in the study demonstrate a turning point in the evolution of the socio-political views of Rolland and Gorky. In 1928, both of them moved on from criticism of the internal policies of the Soviet leadership to cooperation with the Stalinist regime. Rolland dissociates himself from the writers of the Russian emigration and sends congratulations to the Soviet people on the 10th anniversary of the October Revolution; Gorky travels to the USSR after a seven-year absence. A kind of trigger in these conditions was the story of the Romanian writer P. Istrati, who came to the USSR to celebrate the 10th anniversary of the October Revolution and was determined to stay in the country of the “red fighters” forever, as evidenced by his letter to Gorky. However, after staying in the USSR for more than a year and plunging into the everyday life of Soviet people, shaken by social and personal dramas caused by the arbitrariness of the authorities, against the backdrop of mass repression and the absence of any freedom, Istrati lost faith in the possibility of revolutionary transformations of society based on justice. In the history of Istrati’s interaction with his literary idols, new trends emerged that determined their social behavior: Gorky turned from the author of “Konovalov” (1897) into a “sweet panegyrist,” into a “pasha from Sorrento.” Rolland was ready to turn a blind eye to any abuses by the Soviet authorities for the sake of “defending the USSR.” The “untimely” decision to publish the book “To Another Flame” (1929) about his impressions of his stay in the USSR cost Rolland the friendship and recognition of the socialist writers from his circle.
A Writer and Criticism of Russian Abroad: Georgii Adamovich in the History of Alexey Remizov’s Novel Music Teacher
Authors:   Institute of Russian Literature (Pushkin House) of the Russian Academy of Sciences, Obatnina Elena R.
Published: September 2024

The article considers a significant aspect of the history of literature, namely the communication between a writer and a critic. The author describes the literary relationships of two well-known figures from Russian abroad, A. Remizov and G. Adamovich, as a long-term dialogue that reveals discussion on different literature problems. While Adamovich’s critical feedback about Remizov’s literary person has long entered scientific circulation, Remizov’s position towards the evaluative judgments of the representative of the so-called “middle generation” of emigration appeared only in his letters to N.V. Kodryanskaya. The article reconstructs the literary context of Remizov’s communication with Adamovich and reveals its motivations. Based on previously unknown epistolary documents and Adamovich’s publications, forgotten in the pages of the emigrant periodicals, the article analyzes the subtext layer of the stories of the early 1930s that formed the core of the novel Music Teacher. The research outcomes significantly contribute to the history of Remizov’s novel and the commentary in some chapters.
Distribution Status for the Plants of Alien Species on the Baekdudaegan Protected Area, South Korea
Authors: Seo Hyungsoo , Hwang Hyun-Su , Shin Hyun-Chul , Kim Daeun , Choi Donghui , Park Youngjun
Published: September 2024

This study was conducted to provide information on alien species to the Baekdudaegan Protected Area eco-survey by Ministry of Environment in South Korea from 2015 to 2019. The scope of the survey is based on data from 26 subsections out of 44 subsections in five regions, excluding Korea National Park.In the study area, a total 58 taxa, consisting of 16 family, 48 genera, 56 species, two varieties were found. In addition, five species of ecosystem-disturbing species were identified that Ambrosia artemisiifolia, Aster pilosus, Rumex acetosella, Solanum carolinense, Humulus japonicus. However, the habitat of ecosystem-disturbing species could not be confirmed in the subsections of Dakmokjae-Kubusiryeong (designated number, 13-20), Gisdaebaegibong-Doraegijae (designated number, 23, 24), Ihwaryeong-Haneuljae (designated number, 33), and Neuljae-Miljae (designated number, 37). The spatial status of alien flora on the Baekdudaegan Protected Area monitored by Ministry of Environment in our data can be basic ecological information for the conservation and management of plant species diversity on it.
Fish Diversity of East Sea Streams in Nakdong River Region
Authors: Hwang Jeong Ho , Yun Jong-Hak
Published: September 2024

Fish surveys were conducted near artificial structures installed in eight streams flowing from the Nakdong River region to the east coast of Korea. As a result of the survey, a total of 20,000 individuals belonging to nine orders, 17 families, and 47 species were found. The dominant species was Zacco koreanus, and the subdominant species was Pungtungia herzi. Among the surveyed fish species, endangered species were Pseudobagrus brevicorpus (rank I) and Cottus hangiongensis (rank II). In addition, migratory fish species were Oncorhynchus keta, Plecoglossus altivelis, and Tribolodon hakonensis. As a result of community analysis, the highest diversity, dominance, richness, and evenness indices were Wangpi, Chuksan, Gokgang, and Janggi Stream respectively. The highest number of species was surveyed in Gokgang Stream (25 species). Alpha diversity, the number of species at each survey point in each stream, was the highest at a survey point in Wangpi Stream (20 species), and beta diversity, species at each stream survey point that does not overlap with nearby survey point, was the highest at survey points in Gokgang Stream (12 species). As a result of the similarity analysis, surveyed streams were divided into four groups: group 1 (Chuksan, Baeknok Stream), group 2 (Uljinnamdae, Wangpi, Yungdeokosip Steam), group 3 (Gokgang Stream), and group 4 (Janggi, Hoeya Stream). This study is expected to serve as basic data for managing the aquatic ecosystem of streams flowing from the Nakdong River region to the east coast.
Pest Control and Safety Management Monitoring in Outdoor Plantation Using Unmanned Aerial Vehicle Captured Images
Authors: Han Sung Min , Nam Kyong-Hee
Published: September 2024

The National Institute of Ecology in Seocheon, Chungcheongnam-do, exhibits and studies Korea’s diverse ecosystems to communicate the importance of biodiversity conservation to the general public. The site faces the challenge of preserving the natural environment while ensuring visitor convenience. This requires systematic data collection to quickly detect and respond to threats from pests and natural disasters. In this study, high-resolution orthoimages were acquired to monitor ecological changes using unmanned aerial vehicles. Images were captured through flights monthly from March to July 2024. Digital elevation models and orthoimages were generated to identify dead trees and assess areas of damage caused by heavy rainfall. The study covered an area of 998,655 m2, and the image resolution was 3.6 cm/pixel. The orthophotos were useful in identifying plant pest damage. They also helped evaluate damage caused by rain, showing that the total area of damage was 29,384 m2, mainly due to soil erosion. Furthermore, it is expected that the accumulation of such unmanned remote sensing image data can also be applied to the safety management of various natural conservation areas and public facilities.
Management of Hyperglycemia in Type 1 Diabetes Mellitus
Authors: Neumiller Joshua J.
Published: September 2024

Highlights: Introduction Pathophysiology Glycemic Management in People with T1D Monographs References
Insulin
Authors: Neumiller Joshua J. , McKeirnan Kimberly C.
Published: September 2024

Highlights: Introduction Pharmacology Treatment Advantages/Disadvantages Therapeutic Considerations Combination Therapy Monographs References
Sulfonylureas
Authors: Kroon Lisa , Zhou Crystal
Published: September 2024

Highlights: Introduction Pharmacology Treatment Advantages/Disadvantages Therapeutic Considerations Combination Pills Containing a Sulfonylurea Monographs References
Glucagon-Like Peptide-1 Receptor Agonists
Authors: Whitley Heather P. , Trujillo Jennifer M.
Published: September 2024

Highlights: Introduction Pharmacology Treatment Advantages/Disadvantages Therapeutic Considerations Monographs References
Bile Acid Sequestrants
Authors: Buchman Christina R.
Published: September 2024

Highlights: Introduction Pharmacology Treatment Advantages/Disadvantages Therapeutic Considerations Monographs References
Medications for the Management of Chronic Kidney Disease
Authors: Tran Emmeline
Published: September 2024

Highlights: Introduction Goals of Treatment Medications Combination Therapy Combination Products Monographs References
Medications for the Management of Retinopathy
Authors: Tran Emmeline
Published: September 2024

Highlights: Introduction Goals of Treatment Medications Combination Therapy Monographs References
Gaskeuniversiteete (Mid Sweden University) to Host 2024 Polar Law Symposium
Authors: Zmyvalova Ekaterina , Sjöstedt Angelika
Published: September 2024

In September 2024, Gaskeuniversiteete (Mid Sweden University) will host the Polar Law Symposium. It will be the first time a Swedish university hosts the symposium. This symposium, which began in 2008 during the fourth International Polar Year, serves as a venue for scholars and practitioners to address emerging issues in international law and policy pertaining to the polar regions. This year’s event is scheduled for September 23–25 in Staare (Östersund), Sweden, located in the southern part of Saepmie. The symposium will focus on two primary themes: Implementation of International Minority and Indigenous Law at National Levels, and Governance, Resources, Security, and Jurisdictional Issues in the Circumpolar Area. Mid Sweden University’s role as the host underscores its high-quality multidisciplinary research profile, and growing commitment to Saami studies and research, furthering its mission to enhance collaboration with the Saami community.
Socioeconomic Attributes and Barriers to Healthcare Access: A Perspective of Dependency
Authors: S* Ahmed
Published: September 2024

It is well documented that people in a low socioeconomic hierarchy have lesser healthcare access than those higher on the hierarchy. However, cases of non-access to healthcare are also observed among those who are at the top of the socioeconomic hierarchy. The main reason is their dependency on others and therefore, healthcare access also needs to be studied from the perspective of dependency on others. The study discusses healthcare access from the perspective of dependency in the context of socioeconomic attributes and barriers. The discussion is mainly based on the existing literature. The attributes such as ‘age’, ‘gender’ and ‘disability’ and the related four kinds of individuals such as children, disabled men, old age men, and women with threshold levels of best socioeconomic attributes at which the dependency still prevents them from healthcare access. Therefore, two corrective measures are necessary here. First, the family and social support and second, the government intervention. Hence, the sociological and behavioural approaches are necessary to incorporate into health policy along with institutional supports like quality health infrastructure and financial protection provisions for equitable healthcare for all.
A Cross-Sectional Analysis of Periodontal Health in Adult Orthodontic Patients Using Three Bracket Types: Conventional Metal, Conventional Ceramic, and Metal Self-Ligating
Authors: M* Singh , R Maheshwari , S Malhotra , M Raza , S Tyagi , B Kaur , N Prasad
Published: September 2024

Objective: This study aims to evaluate the periodontal health of adult orthodontic patients using three types of brackets: conventional metal, conventional ceramic, and metal self-ligating brackets. It further examines the geometry and surface roughness of each bracket type, correlating these factors with periodontal health outcomes. Methods: A cross-sectional analysis was conducted with 150 adult orthodontic patients divided into three groups based on the type of brackets used. Clinical parameters, including probing depth (PD), clinical attachment level (CAL), gingival index(GI), and plaque index (PI), were measured. The geometry and surface roughness of the brackets were analyzed using a profilometer. Statistical analysis was performed to compare periodontal health among the groups. Results: The results indicated significant differences in PD, CAL, GI, and PI among the three groups. Metal self-ligating brackets exhibited the lowest PD and GI scores, while conventional ceramic brackets showed the highest scores. Additionally, metal self-ligating brackets had superior surface roughness characteristics. Conclusion: The type of orthodontic bracket used, along with its geometry and surface roughness, can significantly affect periodontal health in adult patients. Metal self-ligating brackets may provide a favorable periodontal outcome compared to conventional brackets.
Adsorption Properties of Hydrophobic Porous Coordination Polymers of Zinc-Oxalic Acid with Triazole and Amino Triazole Mixture Ligands
Authors:   Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, North Sumatera, Indonesia, Zubir Moondra ,   Chemistry Department, Faculty of Science, Shinshu University, Matsumoto, Nagano, Japan, Muchtar Zainuddin ,   Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, North Sumatera, Indonesia, Jasmidi Jasmidi ,   Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, North Sumatera, Indonesia, Selly Rini ,   Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, North Sumatera, Indonesia, Rahmah Siti ,   Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, North Sumatera, Indonesia,   Chemical Engineering Department, faculty of Engineering, Tohoku University, Sendai Miyagi, Japan, Faradilla Putri ,   Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, North Sumatera, Indonesia, Miswanda Dikki ,   Mechanical Engineering Department, Politeknik Negeri Medan, Medan, North Sumatera, Indonesia
Published: September 2024

The porous coordination polymers were prepared from Zn2+ and oxalic acid with 2 linker ligands, 1,2,4-triazole (Taz) and 3-amino-1,2,4-triazole (ATaz). The adsorption of N2 after adsorption of degassed CO2 in the pore frameworks increased by 3 times. The flexibility of this structure is due to the interaction of CO2 molecules with the amine groups contained in it, thereby increasing its porosity.
Synthesis of Silver Nanoparticles and Silver-Gold Binary System by Galvanic Replacement in an Ultrasonic Field
Authors:   Lviv Polytechnic National University, 12, S.Bandery St., Lviv, 79013, Ukraine, Zozulya Galyna , Kunty Оrest ,   Lviv Polytechnic National University, 12, S.Bandery St., Lviv, 79013, Ukraine, Shepida Mariana ,   Lviv Polytechnic National University, 12, S.Bandery St., Lviv, 79013, Ukraine, Kordan Vasyl ,   Ivan Franko National University of Lviv, 6, Kyryla i Mefodiya St., Lviv, 79005, Ukraine
Published: September 2024

The conditions for the synthesis of colloidal solutions of silver nanoparticles by galvanic replacement in an ultrasonic field and the AgAuNP binary system by galvanic replacement have been studied. It has been shown that colloidal solutions of stabilized nanoparticles with absorption maxima at 410 nm (AgNPs) and 540...560 nm (AgAuNPs) are formed in solutions of sodium polyacrylate and metal precursors of AgNO3 and H[AuCl4]. The synthesized AgAuNPs are spherical in shape and their size does not exceed 20 nm.
Microwave-Assisted Synthesis of Bis-(Hydroxybenzylidene)-Cycloalkanones via Acid Catalyzed Claisen-Schmidt Condensation
Authors:   Faculty of Pharmacy, Widya Mandala Catholic University Surabaya, Jl. Kalisari Selatan No.1 Kalisari, Pakuwon City, Kec. Mulyorejo, Surabaya, Jawa Timur 60112, Indonesia, Adabella Eunike , Oei Cindy A. W. ,   Faculty of Pharmacy, Widya Mandala Catholic University Surabaya, Jl. Kalisari Selatan No.1 Kalisari, Pakuwon City, Kec. Mulyorejo, Surabaya, Jawa Timur 60112, Indonesia, Rantetasak Vania A. ,   Faculty of Pharmacy, Widya Mandala Catholic University Surabaya, Jl. Kalisari Selatan No.1 Kalisari, Pakuwon City, Kec. Mulyorejo, Surabaya, Jawa Timur 60112, Indonesia, Budiati Tutuk ,   Faculty of Pharmacy, Widya Mandala Catholic University Surabaya, Jl. Kalisari Selatan No.1 Kalisari, Pakuwon City, Kec. Mulyorejo, Surabaya, Jawa Timur 60112, Indonesia, Soewandi Ami ,   Faculty of Pharmacy, Widya Mandala Catholic University Surabaya, Jl. Kalisari Selatan No.1 Kalisari, Pakuwon City, Kec. Mulyorejo, Surabaya, Jawa Timur 60112, Indonesia
Published: September 2024

In the present study, bis-(hydroxybenzylidene)cycloalkanone derivatives were synthesized by Claisen-Schmidt condensation using cycloalkanones and arylaldehydes in the presence of HCl as an acid catalyst. The synthetic reaction was carried out under microwave irradiation. The structure of the synthesized compounds was determined by UV, IR, 1H NMR spectroscopic methods. The obtained reaction yields were not optimal due to the self-polymerization of p-hydroxybenzaldehyde in an acid solution.
Production of Biodiesel Without Catalyst Separation with Palm Oil Interesterification Process Using Essential Oil Biocatalyst
Authors:   Department of Chemical Engineering, Faculty of Industrial Technology, National Institute of Technology, Jl. Raya Karanglo Km. 2, Malang 65143, Indonesia, Daryono Elvianto Dwi , Jimmy Jimmy ,   Department of Chemical Engineering, Faculty of Industrial Technology, National Institute of Technology, Jl. Raya Karanglo Km. 2, Malang 65143, Indonesia, Setyawati Harimbi ,   Department of Chemical Engineering, Faculty of Industrial Technology, National Institute of Technology, Jl. Raya Karanglo Km. 2, Malang 65143, Indonesia
Published: September 2024

The transesterification is a method commonly used in the production of biodiesel. Therefore, this study aimed to investigate interesterification reaction of palm oil with methyl acetate using essential oil biocatalyst, specifically focusing on eugenol and cajuput oil. The operating parameters were: 250 g of palm oil, a molar ratio of palm oil:methyl acetate of 1:6, a reaction temperature of 60ºC, a stirring speed of 300 rpm, a biocatalyst of 0.75 wt. % in relation to oil, and reaction times of 15, 30, 45, 60, and 75 min. The palm oil, methyl acetate and biocatalyst reacted in a three-necked flask as a reactor under operating conditions. Additionally, simulations were performed using ChemDraw Professional 15.0 to analyze the molecular behavior of the reacting compounds.
Kinetics of Low Molecular Substances Sorption by the Polymer Mixtures
Authors:   Lviv Polytechnic National University, 12 S. Bandera St., 79013, Lviv, Ukraine, Bratychak Jr Mykhailo , Chopyk Natalia ,   Lviv Polytechnic National University, 12 S. Bandera St., 79013, Lviv, Ukraine, Zemke Victoria ,   Lviv Polytechnic National University, 12 S. Bandera St., 79013, Lviv, Ukraine
Published: September 2024

The sorption capacity of polymer blends was analyzed on the basis of absorption kinetics. The study was carried out in an adsorption-active medium with different degrees of deformation. Heptane and butanol were used as adsorption-active media. The influence of the chemical nature of the adsorbate on the sorption process was studied. The free volume fractions for each sample of the composition were calculated. The ability of materials to absorb different amounts of substances allows us to identify the behavior peculiarities of the interfacial regions of different chemical compositions.
The Effect of Crown Ethers and Polyglycols on the Sustainability Indicators of Cyclohexane Oxidation Process
Authors:   Lviv Polytechnic National University, 12 S. Bandery St., Lviv, 79013, Ukraine, Melnyk Yurii , Melnyk Stepan ,   Lviv Polytechnic National University, 12 S. Bandery St., Lviv, 79013, Ukraine, Mahorivska Halyna ,   Lviv Polytechnic National University, 12 S. Bandery St., Lviv, 79013, Ukraine
Published: September 2024

The crown ether or polyglycol additives to transition metal catalysts improve both the performance indicators, such as cyclohexane conversion, selectivity of target products, and the sustainability indicators of the oxidation process. It has been shown that the effect of the organic additives on the sustainability indicators is primarily due to a significant (up to 14.3%) increase in the selectivity of target cyclohexane oxidation products.
Investigation of n-Butane Conversion on Pd, Rh, Ru Catalysts Supported by Al2O3 and SiO2
Authors:   Department of Physical Chemistry, Catalysis and Petrochemistry, Al-Farabi Kazakh National University, 050040, 71 Al-Farabi Ave., Almaty, Republic of Kazakhstan, Karimova Dana
Published: September 2024

This study explored the dehydrogenation of n-butane using Pd, Rh, and Ru catalysts on aluminum and silicon oxide supports. Aluminum oxide (Al2O3) showed superior conversion of n-butane, especially with 1% Pd/γAl2O3, yielding 31% target alkenes. This catalyst offers potential for scaling up n-butane dehydrogenation technology.
Mass Transfer during Boric Acid Dissolution
Authors:   Lviv Polytechnic National University, 12 S. Bandery St., Lviv, 79013, Ukraine, Kuzyk Oleksandr , Atamaniuk Volodymyr ,   Lviv Polytechnic National University, 12 S. Bandery St., Lviv, 79013, Ukraine, Gumnitsky Yaroslav ,   Lviv Polytechnic National University, 12 S. Bandery St., Lviv, 79013, Ukraine
Published: September 2024

The process of mass transfer during the dissolution of boric acid spheres in water was investigated in the temperature range from 293 K to 323 K, and at stirring rotation rates from 1.67 to 6.67 s-1. The study aimed to determine the dependence of the dissolution rate on the stirring rotation rate and water temperature. The analysis of the experimentally obtained results revealed that the most significant factor affecting the intensification of the dissolution process is an increase in the solution temperature. The phenomena of external and internal diffusion during the dissolution of boric acid spheres in water under agitation were also examined. To evaluate the mass transfer process, a generalized criterion equation was used that takes into account all the factors under study. Comparison of experimental and theoretically calculated values showed that the maximum absolute relative error does not exceed 6%. The results obtained are valuable for further research and potential applications in the chemical industry, pharmacology, and cosmetology.
Physico-Chemical and Microbiological Characterization of Starch-Based Biodegradable Films
Authors:   Lviv Polytechnic National University, 12 S.Bandery St., 79013 Lviv, Ukraine, Fedoryshyn Olha , Chervetsova Veronika ,   Lviv Polytechnic National University, 12 S.Bandery St., 79013 Lviv, Ukraine, Yaremkevych Olena ,   Lviv Polytechnic National University, 12 S.Bandery St., 79013 Lviv, Ukraine, Skril Yuliya ,   Lviv Polytechnic National University, 12 S.Bandery St., 79013 Lviv, Ukraine,   JUNIA, 2 rue Norbert Ségard BP 41290, 59014 Lille cedex, France, Khomyak Semen ,   Lviv Polytechnic National University, 12 S.Bandery St., 79013 Lviv, Ukraine, Kohut Ananiy ,   Lviv Polytechnic National University, 12 S.Bandery St., 79013 Lviv, Ukraine
Published: September 2024

Research on the manufacturing of experimental biodegradable films (EBF) was carried out in the laboratory. Recipes containing 8, 10, and 15% of corn and potato starch were analyzed. It was found that the EBF based on potato starch with a 10% concentration is more plastic and retains its shape well compared to other samples. Microbiological, mechanical, physicochemical, and infrared spectroscopic studies of the EBF and the biodegradable plastics (BP) available on the market in the form of packaging bags that are positioned as biodegradable (BP from ATB, BP from Silpo, BP from Roshen) were performed. The isolation of enrichment soil microbial cultures and their identification by microscopy of permanent mounts were studied. The ability of the isolated microbial cultures to biodegrade starch-based EBFs was experimentally investigated and determined, as well as the peculiarities of biodegradation of starch-based EBFs and BPs, as a result of the activity of microorganisms of different taxonomic groups, were studied.
Adsorption Desulfurization of Simulated Diesel Fuel Using Graphene Oxide
Authors:   Department of Petroleum and Gas Refining Engineering, College of Petroleum Processes Engineering, Tikrit University, Iraq, Mahmood Qahtan A. , Humadi Jasim I. ,   Department of Petroleum and Gas Refining Engineering, College of Petroleum Processes Engineering, Tikrit University, Iraq, Algawi Rafi J. ,   Department of Petroleum and Gas Refining Engineering, College of Petroleum Processes Engineering, Tikrit University, Iraq, Nawaf Amer T. ,   Department of Petroleum and Gas Refining Engineering, College of Petroleum Processes Engineering, Tikrit University, Iraq, Ahmed Ihab A. ,   Tikrit University, College of Chemistry, North Refinery Company, Oil Ministry, Iraq
Published: September 2024

Graphene oxide (GO) was synthesized from graphite powder by the improved Hammers method and used for the adsorption of organosulfur compound (dibenzothiophene, DBT) from model diesel fuel. FT-IR spectroscopy, X-ray diffraction, SEM, EDX, and BET were used to characterize the GO. Several factors, such as solution pH, initial DBT concentration, adsorption contact time, adsorption temperature, and adsorbent dosage were used to test the DBT removal efficiency. The results show that the maximum removal was 96.4% at pH = 5, initial solution concentration of 200 ppm, adsorption time of 45 min, temperature of 45C and adsorbent dosage of 0.4 g/25 mL.
Control of Thermochemical Transformations of Components of Coal-Based Binders
Authors:   State Enterprise ", Borisenko Olexandr ,   Ukrainian State Research Institute for Carbochemistry",   (SE ",   UKHIN",   ), 7 Vesnina St., Kharkiv, 61023, Ukraine, Cheshko Fedir ,   State Enterprise "Ukrainian State Research Institute for Carbochemistry" (SE "UKHIN"), 7 Vesnina St., Kharkiv, 61023, Ukraine, Bannikov Leonid ,   State Enterprise "Ukrainian State Research Institute for Carbochemistry" (SE "UKHIN"), 7 Vesnina St., Kharkiv, 61023, Ukraine, Holik Natalia ,   State Enterprise "Ukrainian State Research Institute for Carbochemistry" (SE "UKHIN"), 7 Vesnina St., Kharkiv, 61023, Ukraine, Ponomarenko Natalia ,   National Technical University "Kharkiv Polytechnic Institute", 2 Kyrpychova St., Kharkiv, 61002, Ukraine
Published: September 2024

The possibility of considering coal pitch as a material suitable for research modeling the processes of thermochemical transformations of the plastic mass of coal carbonization and their interaction with the solid carbon phase is analyzed. The possibilities of controlling the properties of coal pitch and blast furnace coke during its production with the help of aprotic acid additives in the presence of a co-catalyst are shown.
Architecture and Formal-mathematical Justification of Generative Adversarial Networks
Authors:   National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Prozur Vitalii
Published: September 2024

The purpose of the work is to analyze the features of generative adversarial networks. The object of research is the process of machine learning algorithmization. The subject of the research is mathematical methods used in the generation of semantically related text. This article explores the architecture and mathematical justification of such a type of generative models as generative adversarial networks. Generative adversarial networks are a powerful tool in the field of artificial intelligence, capable of generating realistic data, including photos, videos, sounds, etc. The architecture of generative competition defines its structure, the interaction of components and a general description of the learning process. Mathematical justification, in turn, includes a theoretical analysis of the principles, algorithms and functions underlying these networks. The article examines the general architecture of generative adversarial networks, examines each of its components (namely, the two main network models – generator and discriminator, their input and output data vectors) and its role in the operation of the algorithm. The author also defined the mathematical principles of generative adversarial networks, focusing on game theory and optimization methods (in particular, special attention is paid to minimax and maximin problems, zero-sum game, saddle points, Nash equilibrium) used in their study. The cost function and the process of deriving it using the Nash equilibrium in a zero-sum game for generative adversarial networks are described, and the learning algorithm using the method of stochastic gradient descent and the mini-batch approach in the form of a pseudocode, its iterations, is visualized network architecture. Finally, the conclusion that generative adversarial networks is an effective tool for creating realistic and believable data samples based on the use of elements of game theory is substantiated. Due to the high quality of generated data, generative adversarial networks can be used in various fields, including: cyber security, medicine, commerce, science, art, etc.
Methods of Machine Learning and Design of a System for Determining the Emotional Coloring of Ukrainian-language Content
Authors:   Lviv Polytechnic National University, Lomovatskyi Anton , Basyuk Taras ,   Lviv Polytechnic National University
Published: September 2024

In the article, the authors analyze the current state of research in the field of emotional analysis of Ukrainian-language content for data mining systems. The main methods and approaches to solving the problem are analyzed. The main machine learning algorithms for analyzing textual content are also considered. As a result of the analysis, the main methods and approaches that can be used to analyze the Ukrainian language were identified and classified. The next step was to design the system's functionality using a structural approach. The authors of the article have designed an information system using a structural approach. A contextual diagram of the information system was developed and its main process was decomposed in order to show in more detail the process of preparing and analyzing information in the process of determining the emotional coloring.
Principles of Creating Multi-objective Quality Models for Software Systems
Authors:   State University of Information and Communication Technologies, Shantyr Anton
Published: September 2024

This article proposes an original approach at a mathematical level to the creation of multi- objective quality models for software systems. The research is based on the study and generalization of quality modeling trends of software systems and user needs in order to determine optimal principles for constructing such models. The article provides mathematical explanations that play a key role in identifying and formalizing the principles of creating multi-objective quality models of software. An important aspect is the consideration of quality model construction principles at the mathematical level, allowing for a more precise assessment and analysis of various aspects of software quality. The research results indicate that incorporating mathematical principles into the creation of multi-objective quality models for software systems can have a significant practical impact. It is established that on a practical level of developing multi-objective quality models for software systems, consideration of the principles of creating multi-objective quality models can have numerous practical implications. Specifically, the application of metrics within established principles allows for a comprehensive view of software quality and identifies areas requiring attention and improvement. This helps developers and software quality engineers make informed decisions regarding system improvement and optimization. The research has shown that creating high-quality models of quality requires attention to various aspects, from user needs to testing and continuous improvement, as well as the use of mathematical methods for their formalization and analysis. The developed principles of creating multi-objective quality models at the level of mathematical models allow the use of these models to assess and analyze various aspects of software quality, representing each model using a corresponding function that determines the relationship between quality metrics and the quality of the software itself. It is expected that further development and implementation of these principles will contribute to improving software development processes and ensure high quality of the resulting software.
Analysis of Real-time Processing Approaches for Large Data Volumes in Metering Infrastructure
Authors:   Lviv Polytechnic National University, Moravskyi Roman , Levus Yevheniya ,   Lviv Polytechnic National University
Published: September 2024

Smart grid systems and communication technologies, such as Advanced Metering Infrastructure (AMI), have revolutionized utility service management and monitoring. AMI leverages smart meters equipped with advanced communication capabilities, facilitating bidirectional communication between utilities and consumers. The increasing deployment of smart meters and the adoption of sub-hourly data collection requirements by utility companies highlight significant data volume growth. Thus, there is a need for efficient real-time data processing solutions as existing approaches may not meet previously established Service-Level Agreements (SLAs) concerning performance, accuracy, and scalability metrics. This research aims to comprehensively review the latest publications relevant to distributed real-time data processing methods for smart grid applications and outline problems for further research. Specifically, the study delves into the effectiveness and application of reviewed approaches in managing the constant stream of data from smart meters and IoT devices within the smart grid context. By analysing existing methodologies and advancements, this study seeks to identify challenges and opportunities in real-time data processing for smart grid infrastructures, focusing on addressing the complexities of processing, managing, and storing large volumes of real-time data. The literature review revealed two primary applications of real-time data processing: optimization of data streaming performance and data analysis. The review encompasses various studies, each presenting distinct methodologies and technologies applied to address the challenges of processing large volumes of real- time data from smart meters and IoT devices. Future research should address the challenges and limitations discovered in this study.
Virtual Online Garment Fitting Using Augmented Reality
Authors:   Lviv Polytechnic National University, Lehkyi Mykola , Zhuravchak Liubov ,   Lviv Polytechnic National University
Published: September 2024

In recent years, the number of accessories and headwear purchased on the Internet has been increasing, and at the same time, the percentage of product returns has not decreased. One approach to solving this problem is virtual fitting rooms. Accessibility to the online fitting system for accessories and headwear and the quality of fitting are important criteria for users. Existing systems for online fitting have shortcomings with occlusions, reflection of lighting and shadows, and the accuracy of reproduction of goods on a person in relation to the environment. The article is devoted to solving the problem of online fitting of accessories and headgear to a person with the appearance of shadows and lighting on a 3D model due to the use of neural networks. A method is proposed that simulates high-quality human stocking with a high number of frames per second, the ability to play from any device with a web browser, and low CPU and GPU requirements. The algorithm prototype has advantages compared to 2D counterparts: 3D lighting, dynamic change of its brightness, shadows, virtual environment and reduced occlusions. Created a virtual online fitting using augmented reality – MLight-VTON. It is noted that based on the proposed method and the Three.js library, trained TensorFlow.js models can be added to further improve tissue deformation and body segmentation.
Decoding Cesium-137: a Deep Learning Approach to Environmental Prediction
Authors:   Lviv Polytechnic National University, Lytvyn Vasyl , Khobor Oleksii ,   Lviv Polytechnic National University
Published: September 2024

The study delves into the significant environmental threat posed by cesium-137, a byproduct of nuclear mishaps, industrial activities, and past weapons tests. The persistence of cesium-137 disrupts ecosystems by contaminating soil and water, which subsequently affects human health through the food chain. Traditional monitoring techniques like gamma spectroscopy and soil sampling face challenges such as variability and the intensive use of resources. The paper introduces deep learning, a branch of artificial intelligence, as a revolutionary method for environmental monitoring. By utilizing extensive datasets, deep learning predicts the spread of cesium-137, thus enhancing our understanding and management of its impact. The application of predictive models based on deep learning in various environmental domains demonstrates their potential for analyzing cesium-137 pollution.
Information System for Managing the Process of Continuous Software Delivery
Authors:   Lviv Polytechnic National University, Berko Andriy , Koblyk Ivan ,   Lviv Polytechnic National University
Published: September 2024

Today, the direction of DevOps is an essential component in the execution of IT projects of various scales. This determines the need to develop the latest progressive approaches, methods, and technologies to ensure the effective activity of DevOps specialists. One of such popular solutions is continuous integration (CI) and continuous delivery (CD) of software. This approach (CI/CD) makes it possible to significantly speed up the processes of software development, testing, and implementation, improve the quality of development results, and ensure the controllability and manageability of these processes. A key factor in CI/CD processes is the use of tools to automate the work of DevOps specialists. The work describes a system for managing the continuous delivery of software, developed based on the modern application experience of leading companies.
Evaluation of Classification Accuracy Using Feedforward Neural Network for Dynamic Objects
Authors:   Lviv Polytechnic National University, Peleshchak Ivan , Koshtura Diana ,   Lviv Polytechnic National University
Published: September 2024

This paper investigates the impact of the number of hidden layers, the number of neurons in these layers, and the types of activation functions on the accuracy of classifying projectiles of six types (A – (artillery); A/M – (artillery/missile); A/R – (armor-piercing); A/RC – (armor-piercing- incendiary); M – (missile); R – (armor-piercing shells)) using a multi-layer neural network, evaluated by a confusion matrix. Specifically, confusion matrices were constructed to assess the accuracy of classifying projectiles of six types (A – (artillery); A/M – (artillery/missile); A/R – (armor-piercing), ; A/RC – (armor-piercing-incendiary); M – (missile); R – (armor-piercing shells)) using a multi-layer perceptron with one, two, and three hidden layers and activation functions: Logistic, Tanh, Relu, Softmax, respectively. It was found that the highest accuracy in classifying projectiles is achieved using a neural network with two hidden layers, with 33 neurons in the first hidden layer with Tanh activation function and 8 neurons with Tanh activation function in the second hidden layer, and Softmax for the neurons in the output layer.