bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamic competition between sensory and decisional biases in perceptual decision making
Authors: Gao Yi , Chen Sixing , Rahnev Dobromir
Published: October 2023

Bias in perceptual decision making can have both sensory and decisional origins. These competing sources of bias are typically seen as static and stable over time. However, human behavior is dynamic and constantly adapting. Yet, it remains unclear if the competition between sensory and decisional biases changes over time too. We addressed this question by tracking the dynamics of sensory and decisional biases during a task that involves a visual illusion. Observers saw multiple pairs of peripherally presented faces that induce a strong illusion making the faces appear distorted and grotesque. The task was to judge whether one of the last two faces had true physical distortion (experimentally introduced in half of the trials). Initially, subjects classified most faces as distorted as exemplified by a liberal response bias. However, over the course of the experiment, this response bias gradually disappeared despite the fact that the distortion illusion remained equally strong, as demonstrated by a separate subjective rating task without artificially distorted faces. The results suggest that the sensory bias was progressively countered by an opposite decisional bias. This transition was accompanied by an increase in reaction times and a decrease in confidence relative to a condition that does not induce the visual illusion. All results were replicated in a second experiment with inverted faces. These findings demonstrate the existence of dynamic competition between sensory and decisional biases that together determine how humans make perceptual decisions.
Thus Spoke Puspha
Authors: Rayudu Posina Venkata
Published: October 2023

There is a lesson from the woods—Bollywood, Kollywood, Mollywood, and Tollywood—of make-believe, which speaks to the core concern of science: the practice of science. Puspha, an Indian movie that brought the movie industry to its senses, with its global popularity has this to say: Be thyself; keep it real. Situated in a remote region distant from the vast concrete and intimate plastic world we are familiar with, the happenings in the distant and alien universe of discourse—a hamlet adjacent to tribals, forest, and nature—is surprisingly universally relatable. Here I show how the unity of being and the attendant naturality of becoming or, in the words of Tolkien, "the inner consistency of reality" of Pushpa is what made people all over the world relate to each and every character/scene in Pushpa. In doing so, I bring out its (arts and/or humanities) relevance to the practice of science.
Transition system for formal argumentation
Authors: Omisore Jonathan
Published: October 2023

The paper introduces a variation of the Kripke structure known as the Argumentation Transition System that is used for the purpose of modeling conditional preferences in formal argumentation. An example of the Argumentation Transition System's application to conditional preferences is provided. Another example of its application to argument context, particularly persuasion, is provided. Potential future research directions are discussed.
Economic development and adolescent wellbeing in 139 countries
Authors: Marquez Jose , Casas Ferran , Taylor Laura , De Neve Jan Emmanuel
Published: October 2023

Introduction: There is a positive association between the level of economic development and national levels of overall life satisfaction (OLS) in the adult population, with decreasing marginal returns. However, research shows no association in early adolescence and a negative association in middle adolescence. We hypothesize that this is due to the exclusion of low-income countries, where adolescent wellbeing is rarely collected. Method: 2015-2019 Gallup World Poll data from 139 countries in middle adolescence (age 15-17; n 36,907) were analysed using linear regression to study the association between country levels of economic development and OLS, positive emotions (PE), and negative emotions (NE), and how this varies across economic development levels, and gender. Variations across economic development levels were compared with those observed in the adult population.Results: Log per-capita GDP is positively associated with OLS and PE, although in high-income countries no association is observed for PE, and among females for OLS. For NE, a negative association is observed in lower-income countries and a positive association in higher-income countries. In this age group (age 15-17), the log per-capita GDP – OLS association is stronger in lower-income countries than in higher-income countries, but this pattern reverses with age in adulthood.Conclusion: A nuanced relationship exists between economic development and adolescent wellbeing, which varies across measures, levels of economic development, gender, and age -including notable differences compared to adults. Our study highlights the need for improving child and adolescent wellbeing data worldwide, especially in lower-income countries, to better understand how best to support wellbeing globally.
Students’ Attitudes toward Using Chatbot in EFL Learning
Authors: Mohamed Samia Saeed Ahmed , Alian Eman Mahmoud Ibrahim
Published: October 2023

The current study is an exploratory experiment on the attitudes of English as a Foreign Language students toward using chatbots in their learning. The study sheds light on the recent technical tools for language learning and finds out to what extent chatbots are effective in acquiring language skills, especially their usability, precision, assessment, and strengths. To answer the study’s main question, the researchers examined 64 English foreign language first-year secondary Egyptian students’ responses to a 20-item questionnaire through a survey research approach. The researchers chose students through purposive sampling. They used descriptive statistics to assess the data from the Likert-scaled items. The findings indicated that chatbots appeal to language learners because learners can utilize them without the help of the instructors, which in turn encourages them to become autonomous learners. They also believed that the Chatbot might simulate an interaction cycle so they could practice the target language. Additionally, the students felt that the Chatbot boosted their enthusiasm and confidence, which ultimately helped them feel active and more comfortable. Consequently, the data provide insightful information about properly integrating chatbots in English language learning inside and outside the classroom while considering its defects.
Are liquidity premia the missing pieces in the PPP puzzle?
Authors: Olk Christopher
Published: October 2023

The purchasing power of a given currency varies across countries. Countries’ price levels, measured in USD, diverge significantly. The theoretical literature in Minsky’s tradition explains divergences in the other prices of money (the exchange rate, the interest rate and par) with reference to liquidity premia and monetary hierarchy. This argument has not been connected to the price level, which can be defined as the relationship between exchange rates and purchasing power parity rates. This essay presents a hypothesis for that missing connection: Different currencies with different degrees of liquidity are used as a store of value and international means of payment to different degrees. The resulting divergence between the demand for money in the foreign exchange market and the demand for money in the market for commodities moves the market exchange rate away from a level that would equalize purchasing power rates across countries. Based on a review of the Post-Keynesian literature on the links between interest rates and exchange rates, I develop an empirical measure for currencies’ liquidity premia in the foreign exchange market. I use it to empirically test my hypothesis, which I formalize as a simple regression model. My results suggest that the hypothesized effect is small, but significant. This finding points to a causal link between currency hierarchy and ecologically unequal exchange.
The Impact of Using Podcast Episodic Series of Spoken-Word Digital Audio on Improving Imam University EFL Beginners Listening Skills
Authors: Al-Mohawes Nourh Khaled Mohammed
Published: October 2023

This study aimed to investigate the role of podcasts on language development as an indirect educational approach to language in general and listening in particular among Imam Mohammed Ibn Saud Islamic University (IMISIU) EFL beginners. Thus, the purpose of this study lies in its potential effect on students of English by improving the process of introducing them to podcasts as a new input tool. Additionally, it examined how students perceived the use of audio-podcasts outside the classroom. Three questions were addressed in this study via a quantitative approach, a quasi-experimental pre/post-test method. These questions were: 1) What is the effect of using the Podcast Episodic Series of Spoken Word Digital Audio on developing the listening skills of Saudi undergraduate students? 2) How may the podcast facilitate the development of listening comprehension of Saudi undergraduate students? 3) What are Saudi university students’ attitudes towards integrating audio podcasts as a new input tool in the EFL classroom? Study participants in both experimental and control groups were 20 female students studying level two at the College of Languages and Translation (CLT), IMISIU in Saudi Arabia. The findings of the paired sample t-test method showed that there is a relationship between achieving high scores in the listening tests and implementing audio-podcasts as an indirect educational approach. A 10-item questionnaire was used to explore students’ attitudes toward the use of audio-podcasts by using the 5-point Likert scale. The findings showed that respondents have a positive attitude towards integrating audio podcasts as a new language input tool in the EFL classroom. The results also emphasize how imperative it is to incorporate podcasting into the process of developing listening skills to reduce anxiety among EFL learners, familiarize students with how to use the language in real-life situations, and learn the language from its native speakers.
Insights into Chinese College English Undergraduates’ Higher Order Thinking Skills
Authors: Yin Yue , Samat Norhanim Abdul
Published: October 2023

In recent years, educational institutions, administrators, and college EFL teachers in China have advocated for increased emphasis on fostering English undergraduates’ higher-order thinking skills. The relevant studies are widely limited in theoretical approaches without extensive empirical examination of Chinese English undergraduates’ higher-order thinking. Therefore, it is significant to conduct empirical research to explore English undergraduates’ higher-order thinking attitudes and skills separately. This study also assesses their correlation and the impact of different learning stages and language proficiencies on these aspects. By doing this, the study holds substantial significance for empirical inquiries into the characteristics of English undergraduates’ HOTS, serving as the reference for Chinese EFL teachers to implement higher-order thinking instructions. A quantitative design of questionnaires and tests was employed on a sample of 240 Chinese-English undergraduates from Hebei Finance University. The data analysis contained descriptive statistical analysis, independent-sample T-test, one-way ANOVA, and Pearson correlation analysis. The findings show that although the responding participants have relatively positive attitudes toward higher-order thinking skills, they exhibit variations in their ability to utilize them. Differences in learning stages and language proficiency do not significantly influence the development of the respondents’ higher-order thinking skills. There is no significant correlation between higher-order thinking attitudes and skills among the participants, indicating that having a positive inclination to higher-order thinking differs from having the skills to think.
The Relationship between the Use of Technology and Technology Addiction in Learning Foreign Language
Authors: Bozavlı Ebubekir
Published: October 2023

In the last century, technology has become more commonplace than ever. Its effect continues to increase day by day in the field of education, training, and in many aspects of social life. Today people cannot protect themselves from its influence, which mostly leads to addiction. The present study aims to determine the relation between learners’ addiction to technology and the use of technology in foreign languages. The research is to address the following questions: “Are foreign language learners addicted to technology, and to what extent do they utilize technology in their learning of a foreign language?” The respondents consist of 277 students, male and female from the departments of English, French, and German language education. A survey consisting of 35 closed-ended questions was given to students in the three departments. The 5 Likert scale with 35 items was also used. The results were analyzed using descriptive statistics by means of the Spss program. The findings of the study revealed that the participants’ level of technology addiction is medium, and their competence in using technology in foreign language learning is low. Furthermore, the results indicate a significant difference in favor of upper grades in the use of technology.
Examining the role of police-led diversion in the youth crime decline in Australia: a macro-level longitudinal analysis
Authors: McCarthy Molly , McLaws Shaun , Allard Troy , de Andrade Dominique , Matthews Ben
Published: October 2023

While the causes of the international youth crime decline have been disputed, it has been proposed that changing policing responses may have contributed. This study examines whether increased rates of police-led diversion have contributed to the youth crime decline in Australia. Fixed effects panel regressions were undertaken to examine the association between police diversion rates and youth crime prevalence, recidivism and mean reoffending across regions in New South Wales and Victoria, from 2005 to 2019. Findings indicated a significant decline in youth offending prevalence in this period, but also a decline in police diversion rates for young people, and a lack of association between diversion rates and youth offending prevalence. In contrast, youth recidivism increased over the same period. However, diversion rates were negatively associated with youth recidivism and mean levels of reoffending at a regional level, such that regions with higher diversion rates had lower levels of youth reoffending. Findings also indicate that the youth offending decline in Australia has been conditioned by socio-economic characteristics, with growth in youth offending evident in more socio-economically deprived regions. Implications for drivers of the youth crime decline and policing responses to young people are discussed.
Unveiling the Subtle Art of Politeness: An Analysis of Jordanian Educators’ Deployment of Linguistic Strategies in the Official WhatsApp Group
Authors: Hussein Suzan Farouq F. , Rashid Radzuwan
Published: October 2023

The advent of the digital landscape has significantly transformed the communication practices of educators. Within this evolving context, an intriguing aspect that warrants scholarly investigation is their politeness strategies within official institutional WhatsApp groups. It aims to shed light on the complexities of educators’ interactions in the digital environment by closely examining their linguistic choices. The application of politeness expressions among teachers themselves and in their interactions with superiors proves to be a beneficial strategy for achieving effective communication. Using an ethnographic method, the careful observation of 163 messages shared by 20 teachers in the official WhatsApp groups was conducted over six months. The comprehensive politeness framework proposed by Brown and Levinson (1987) provided the foundation for the discursive analysis, complemented by the insightful perspective of Holmes and Stubbe (2015). This study unravels Jordanian English language teachers’ strategic deployment of all four politeness strategies in the official WhatsApp group. Positive politeness emerges as teachers’ predominant strategy to cultivate a sense of closeness and maintain harmonious relationships among colleagues and superiors. Interestingly, teachers display heightened awareness of their linguistic choices when addressing leaders, employing positive politeness to convey deference. In contrast, when communicating with colleagues of equal status, they often opt for a more direct and explicit “bald-on-record” approach. It is noteworthy that superiors also exhibit a discerning awareness of their linguistic choices, employing an “off-record” strategy when addressing faculty members. This study has implications for enhancing a supportive work environment for educators by providing insights into effective communication, professional relationships, and positive teaching settings.
Civil Society as Factor of Stability of Interethnic Relations in Kyrgyzstan
Authors:   DSc in History, Professor, Corresponding Member of the National Academy of Sciences of the Kyrgyz Republic, Head of the Center of Humanitarian Researches in the Central Asia, Institute of History, Archaeology and Ethnology named after B. Dzhamgerchinov, National Academy of Sciences of Kyrgyz Republic, KOICHUMANOVA Cholpon
Published: October 2023

On the territory of Central Asia there are a number of independent states that differ in the level of socio-economic development, the essence and content of ideological and political systems. At the dawn of their independence, the countries of the region, fenced off from each other by borders and customs, were absorbed by the internal problems of the formation of statehood, the formation of a new ideology, tried to comprehend the Soviet legacy and adapt to new realities. All these transformations have caused significant changes in the existing interstate relations. However, Central Asia has a long history. After all, despite the wide palette of historical, anthropological, cultural, social, economic and political features, the unifying factors prevail among the peoples of Central Asia. In this context, the Central Asian states face the difficult task of countering new challenges and threats, choosing an adequate, effective system for ensuring regional security. It is possible to solve the problems in this direction only by combining the efforts, actions and initiatives of all the states of the region.
Impact of Reflexive Control Technologies on Inclusive Security Architecture in Middle East
Authors:   Research fellow of the Department of Middle and Post-Soviet East, Institute of Scientific Information for Social Sciences of the Russian Academy of Sciences (INION RAN), KRYLOV Danila
Published: October 2023

The article is devoted to the impact of reflexive control technologies on the process of constructing an inclusive security architecture in the Middle East. The author analyzes various types of reflexive control technologies. The situation and processes in the Middle East are characterized, as well as the features of the functioning of the inclusive security architecture. The article provides examples of the use of various technologies of reflexive control by Turkey, Iran, Saudi Arabia and Israel. The author then attempts the effectiveness of the use of reflexive management technologies by individual states of the Middle East in the context of bilateral relations, as well as the expediency of Russia’s application of reflexive management in relation to states and processes in the Middle East in order to achieve its national interests and strategic objectives.
Specifics of Economic Transformation of Kyrgyzstan and Tajikistan in Post-Soviet Period
Authors:   Postgraduate student in the Department of Economic, Social, Political and Recreational Geography Federal State Budgetary Educational Institution of Higher Professional Education Russian State Pedagogical University named after A.I. Herzen, MITROFANOV Nikita
Published: October 2023

The article analyzes the specifics of economic development and economic transformation of the Central Asian mountain republics (Kyrgyzstan and Tajikistan) in the post-Soviet period. The author has revealed that, on the one hand, the mountain republics during the period of market reforms developed in the general trend of other post-Soviet and post-socialist states in general, on the other hand, the socio-economic achievements of Kyrgyzstan and Tajikistan were among the least successful among countries transitioning from a planned administrative-command economy to a market economy. In particular, it was found that many economic sectors in the mountain republics have remained depressed over the thirty-year period, which have grown rapidly in other post-Soviet states: such as the mining industry (coal mining, uranium mining, oil and gas extraction) and many sub-sectors of agriculture. The republics currently have an unbalanced, more primitive employment structure, not only in comparison to post-industrial countries, but also to other post-Soviet states (in Kyrgyzstan and Tajikistan a much higher share of the total economically active population is occupied by people working in agriculture). Among the more high-priority sectors of the economies under consideration were gold mining (primarily due to the development of one of the largest gold deposits, Kumtor, in Kyrgyzstan) and wholesale trade (Kyrgyzstan in the post-Soviet period became one of the largest reexporters of goods from China to the Eurasian Economic Union). Hydropower has been identified as one of the most promising sectors for the development of the mountain republics’ economies (thanks to the huge hydropower resources of Kyrgyzstan and Tajikistan).
Effect of waste glass powder and recycled fine aggregate in sustainable concrete
Authors: Olabimtan Stephen Babajide , Damdelen Ömer
Published: October 2023

It is required to help improve concrete's efficiency through the use of waste while also preventing river sand and valuable area from becoming pollution dumpsites. Construction and demolition waste (CDW) has a wide range of possible uses in the construction sector and is quite ubiquitous. It is used as recycled aggregates (RA) in building supplies like mortar and concrete, however, is remaining relatively constrained. This is mostly because it lacks the strength and has more porosity and variability when compared to natural aggregates (NA). Countless research has been conducted with the goal of lowering CO2 emissions, reducing NA exploitation, and enhancing the qualities of these RAs. This research study undertakes a complete experimental assessment to evaluate the impact of adding glass powder and recycled fine aggregates on the creation of sustainable concrete. The study looks at varied proportions of glass powder and recycled fine aggregates, ranging from 0% to 20% with 5% intervals. At a constant temperature of 20°C, the concrete samples are treated to various curing conditions, including both wet and dry curing. Curing times of 3, 7, 14, and 28 days are evaluated. This particular mixture demonstrates a significant increase of 7.2% - 10.76% in strength, indicating that the combined use of 20% GP and 20% RFA results in the highest enhancement of concrete strength among the tested mixtures. This research experiment can be drawn that the inclusion of GP and RFA in concrete gives a tremendous influence in the implementation of mechanical properties and durability for a sustainable concrete.
Hands-on Practices on the Use of Corpora in English Language Teaching: Reflections from Teacher Training
Authors: ÇALIŞKAN Gamze , KURU GÖNEN Safiye İpek
Published: October 2023

Along with recent advances in the development of corpus tools, there has been a growing interest in integrating corpora into language teaching. However, teachers’ lack of awareness may be an obstacle to the effective implementation of corpora in language classroom routines. This study offers an in-service training program on corpus use in language pedagogy and aims to investigate teachers’ views on corpus-based teaching and learning regarding their actual hands-on experiences. For this purpose, 10 EFL instructors at a state university in Turkey were enrolled in an intensive seven-week training program. This program involved a total of nine sessions aimed at presenting how to use corpus tools in language teaching and implementing corpus-based activities in vocabulary teaching, grammar teaching, and error correction. Data were collected via reflective logs and semi-structured interviews. Qualitative analyses revealed the importance of providing teachers with in-service training on corpus use since they perceived to gain awareness, knowledge, and skills required for implementing pedagogical applications of corpora in language teaching while also reporting drawbacks of corpus use in practice. The findings of the study shed light on future practices related to pedagogical uses of corpora in language classrooms and offer a number of implications for teacher education.
Toxicités immuno-induites chez les patients avec cancer sous immunothérapie par inhibiteurs des checkpoints. Ce que l’urgentiste doit savoir
Authors: Peyrony O. , Mathé S. , Addou S. , Naud N. , Madelaine I. , Baroudjian B. , Lebbé C. , Fontaine J.-P.
Published: October 2023

Les inhibiteurs des checkpoints ont révolutionné le traitement de certains cancers et permis d’améliorer de façon spectaculaire le pronostic des patients. Contrairement aux chimiothérapies cytotoxiques classiques, ces traitements entraînent une immunostimulation en restaurant l’activité antitumorale des lymphocytes T et peuvent se compliquer de toxicités immuno-induites. Ces toxicités peuvent toucher tous les organes, à des niveaux de gravité différents et, parfois, mettre en jeu le pronostic vital. Le délai de survenue est très variable, mais se situe généralement dans les premiers mois qui suivent l’initiation du traitement. Ces traitements et leurs effets indésirables sont méconnus des urgentistes. Pourtant, l’utilisation croissante de ces molécules, dans des indications chaque fois plus larges, exposent de plus en plus de patients à ces toxicités et placent les urgentistes en première ligne lorsque celles-ci surviennent. L’enjeu pour les urgentistes est de reconnaître cette famille de molécules et d’évoquer une éventuelle toxicité devant des symptômes compatibles, ne pas banaliser certains symptômes non spécifiques en les attribuant trop facilement à la progression du cancer, et évoquer les diagnostics différentiels et notamment l’infection. Ces diagnostics de toxicité étant parfois longs et complexes, la collaboration rapprochée avec les oncologues et/ou spécialistes d’organes est primordiale et nécessaire avant d’initier le traitement qui repose, le plus souvent, sur les corticoïdes et, parfois, sur les immunosuppresseurs. Nous détaillons ici les toxicités liées aux immunothérapies par inhibiteurs des checkpoints les plus fréquentes et/ou sévères (digestive, endocrinienne, cardiaque, pulmonaire, neuromusculaire et hépatique), avec une approche pragmatique destinée aux urgentistes.
Neuroimaging in Coma, Brain Death, and Related Conditions
Authors: Zamora Edgar , Chun Kwang J. , Zamora Carlos
Published: October 2023

Coma is a state of unresponsiveness to external stimuli, which can be secondary to a variety of CNS alterations affecting essential neuronal pathways, particularly the ascending reticular activating system. A comprehensive clinical evaluation is necessary for assessment of motor function and brainstem reflexes but is often insufficient for determination of the underlying etiology and extent of injury. Diagnostic brain imaging is typically needed for management and decision-making, particularly in acute settings where prompt diagnosis of reversible/treatable conditions is essential, as well as for prognostication. Understanding the pathophysiologic mechanisms leading to coma and comalike states and their imaging manifestations will enable selection of appropriate modalities and facilitate a clinically relevant interpretation. For evaluation of brain death, diagnostic imaging has a supportive role, and when indicated, selection of an ancillary diagnostic test is based on multiple factors, including susceptibility to confounding factors and specificity, in addition to safety, convenience, and availability.Learning objective: To describe the pathophysiology of alterations of consciousness and discuss the role of neuroimaging modalities in the evaluation of coma, brain death, and associated conditions
Invasive Fungal Infection Mimicking Infarctions in a Child with Acute Lymphoblastic Leukemia
Authors: Manek H. , Gala F. , Mudaliar S.
Published: October 2023

Invasive fungal infection is a major cause of morbidity and mortality after intensive chemotherapy in patients with leukemia who present with febrile neutropenia. The most common sites of involvement are the lungs, sinonasal region, and disseminated blood stream infection. Visceral
organ involvement is usually seen in the form of fungal abscesses, with parenchymal infarcts being less common. We report an unusual case of invasive fungal infection presenting with extensive liver infarction, global renal infarction, and multiple brain lesions in a 4-year-old boy with acute
lymphoblastic leukemia on induction chemotherapy.
PENGARUH SISTEM PENGENDALIAN MANAJEMEN DAN PENGENDALIAN INTERNAL TERHADAP KINERJA KEUANGAN PADA RUMAH SAKIT JOMBANG
Authors: Sukmawati Nabila Dwi , Susilo Dwi Ermayanti
Published: October 2023

Penelitian ini dimaksudkan untuk mencari bukti empiris tentang dampak sistem pengendalian manajemen (seperti kinerja karyawan, kompensasi, komunikasi, penyelesaian konflik, komitmen, serta produk dan kebijakan pasar) terhadap kinerja keuangan di Rumah Sakit Jombang, Jawa Timur. Populasi yang diperiksa dalam studi ini adalah semua karyawan yang bekerja di departemen keuangan Rumah Sakit Jombang yang beroperasi di Jawa Timur. Sampel penelitian ini dipilih secara acak. Data dianalisis dengan menggunakan metode analisis regresi sederhana. Hasil penelitian menunjukkan bahwa sistem pengendalian manajemen memiliki pengaruh positif yang signifikan terhadap kinerja keuangan.
Оцінка геологічних ризиків при освоєнні вітчизняних родовищ карбонатних порід
Authors: Mayboroda Ye. I. , Zubal O. O.
Published: October 2023

Пропонуються огляд методик оцінки геологічних ризиків при освоєнні вітчизняних родовищ карбонатних порід і приклад розрахунку для одного з родовищ Херсонської області. Геологічний ризик визначено як вірогідність непідтвердження кількісних і якісних характеристик запасів родовища. Ступінь невизначеності кількісно обраховано через коефіцієнт варіації ресурсів. Для відносно добре вивчених об’єктів він невеликий – 0–0,2, для середньовивчених – 0,1–0,4, для маловивчених – від 0,3 до 1 і більше. Інтервали значень перетинаються, оскільки залежать від складності геологічної будови об’єкта. За результатами розрахунків ділянка, яка оцінюється, має невеликі ризики втрати якості, що забезпечується рівномірним розподілом корисного компонента. Негативні наслідки може мати коливання вмістів SiO₂ та MgCO₃, оскільки для цього родовища і так фіксуються підвищені суми масових часток SiO₂ + Al₂O₃ при оцінці сировини як флюсової. За літологічними різновидами найбільші ризики непідтвердження якості зафіксовані для вапняків оолітових та вапняків пелітоморфних черепашкових.
Пегматити Сурської та Верхівцівської зеленокам’яних структур Середнього Придніпров’я, Український щит
Authors: Sukach V. V. , Isakov L. V. , Hoholev K. I. , Kotenko M. S. , Khomych Yu. Ye.
Published: October 2023

Наведено маловідомі дані про пегматити Сурської і Верхівцівської зеленокам’яних структур, які було отримано в результаті ретельного вивчення, аналізу та переінтерпретації фондових та архівних матеріалів. Зокрема, розкрито їх геолого-структурну позицію, межі розповсюдження, мінералого-геохімічні особливості, зв’язок з гранітними комплексами і масивами тощо, а також окреслено їхні перспективи на рідкіснометалеве зруденіння. На півночі Сурської зеленокам’яної структури у межах Карнаухівського синклінального відгалуження під час пошуків на силікатний нікель у 1961 р. розкрито понад 60 пегматитових жил, більшість із яких інтрудують ультрабазити однойменного масиву. Вони залягають субвертикально, прослідковуються на 150–250 м. Для жил Карнаухівського пегматитового вузла з’ясована зональна будова. В межах окремих тіл виділяється до п’яти зон: аплітова, різнозернистого граніту, пегматоїдна, блокового кварцу і мікрокліну. Північно-західна частина Сурської зеленокам’яної структури виокремлюється як перспективне Правдинсько-Карнаухівське пегматитове поле.Верхівцівська структура має складну блокову будову, що дає підстави очікувати виявлення глибоко еродованих пегматитоносних блоків. Серії пегматитових і аплітових жил з аномальним вмістом рідкісних і рідкісноземельних металів виявлені в межах Шмаківського відгалуження та більшою мірою в його гранітоїдному оточенні. Дана ділянка виділяється як Грушево-Рудицинське пегматитове поле.В межах Карнаухівсько-Правдинського та Грушево-Рудицинського пегматитових полів рекомендується виконати спеціалізовані пошукові роботи на рідкісні метали, пов’язані з пегматитами.
Investigation of the profilogram structure of microstrip microwave modules manufactured using additive 3D-printing technology
Authors: Vorunichev D. S. , Kostin M. S.
Published: October 2023

Objectives. The aim of the work is to study the surface roughness of the current-carrying topology and dielectric of the upper (Top Layer) and lower (Bottom Layer) sides of microwave modules manufactured using additive three-dimensional printing technology when prototyping prototypes of microwave modules on a 3D printer of DragonFly 2020 LDM multilayer printed circuit boards.

Methods. Methods of metallographic analysis in bright and dark fields, surface roughness profiling, and computer modeling were used.

Results. Experimental samples of microstrip microwave elements of modules of multilayer boards of a given configuration, telemetry sensors, printed circuit board (PCB) antennas were obtained. The topological and radiophysical features of the additively formed upper and lower surface layers of experimental samples of boards of strip modules were studied. Optical profilogram measurements of the roughness of the outer sides of the board were carried out at 10 points, amounting to 2 µm for the upper layer of the topology and 0.3 µm for the lower layer; the average grain size of the dielectric base was determined at 0.007 mm2. The roughness of the conductive topology and upper side dielectric was shown to correspond to an accuracy class of 6–7, while the roughness of the microstrip conductive topology and the dielectric of the lower side of the board corresponds to an accuracy class of 10–12.

Conclusions. It is established that an uneven formation of the lower and upper strip layers of the printed module can affect the inhomogeneity of the distribution of radiophysical parameters (dielectric permittivity, surface conductivity, etc.), as well as the instability of the structural (adhesion ability, thermal conductivity, etc.) characteristics of the strip module, which must be taken into account when prototyping devices using inkjet 3D printing technology, including when adapting Gerber projects of PCB modules created for classical board production technology.
Nonlinear magnetoelectric effect in a ring composite heterostructure
Authors: Musatov V. I. , Fedulov F. A. , Savelev D. V. , Bolotina E. V. , Fetisov L. Y.
Published: October 2023

Objectives. The relevance of the study of magnetoelectric (ME) effect in ring ferromagnetic–piezoelectric heterostructures is due to the possibility of creating various ME devices having improved characteristics. A detailed investigation of the nonlinear ME effect in a ring composite heterostructure based on lead zirconate titanate (PZT) piezoceramics and Metglas® amorphous ferromagnetic (FM) alloy under circular magnetization is presented.

Methods. The ME effect was measured by the low-frequency magnetic field modulation method. Excitation alternating- and constant magnetic bias fields were created using toroidal coils wound on a ring heterostructure for circular magnetization of the FM layer.

Results. When excited with circular magnetic fields in a non-resonant mode, the ME ring heterostructure generates a nonlinear ME voltage of higher harmonics. The field and amplitude dependencies of the first three ME voltage harmonics were investigated. ME coefficients were obtained for the linear ME effect α(1) = 5.2 mV/(Oe·cm), the nonlinear ME effect α(2) = 6 mV/(Oe2·cm), and α(3) = 0.15 mV/(Oe3·cm) at an excitation magnetic field frequency f = 1 kHz. The maximum amplitudes of the 1st and 3rd harmonics were observed at a constant bias magnetic field H ~ 7 Oe, which is almost two times smaller than in planar PZT–Metglas® heterostructures.

Conclusions. A nonlinear ME effect was observed and investigated in a ring heterostructure based on PZT piezoceramics and Metglas® amorphous FM alloy. Due to the absence of demagnetization during circular magnetization of the closed FM layer, nonlinear ME effects are detected at significantly lower amplitudes of the exciting alternating and constant bias magnetic fields as compared to planar heterostructures. The investigated ring heterostructures are of potential use in the creation of frequency multipliers.
Synchrotron radiation of a single electron application for optical spectroradiometry
Authors: Sigov A. S. , Lazarenko E. R. , Golovanova N. B. , Minaeva O. A. , Anevsky S. I. , Minaev R. V. , Pushkin P. Yu.
Published: October 2023

Objectives. The investigations of optical radiation sources and metrological detector characteristics in the infrared (IR), visible, and air ultraviolet (UV) spectral regions are partially based on the unique metrological properties of synchrotron radiation. The aim of this work is to develop a high-precision method for determining the storage ring accelerated electron number with synchrotron radiation of a single electron to establish spectroradiometry and photometry units.

Methods. By determining the number of accelerated electrons, any storage ring can be used to calculate the synchrotron radiation characteristics at wavelengths of many large then the critical wavelength in the visible, air UV, and IR regions of the spectrum. This makes it possible to determine the main metrological characteristics normalized to the number of electrons, such as luminous intensity, luminance, illuminance, radiant power, radiance, irradiance, etc., regardless of the energy of the electrons.

Results. When applying the method for determining the number of accelerated electrons at low currents of the electronic storage ring, a total standard deviation of the number of accelerated electrons is less than 0.01% for an exposure range of the CCD matrix from 10−2 to 3 · 103 s in a wide dynamic range of 1−1010 electrons per orbit.

Conclusions. The use of a CCD-based radiometer-comparator calibrated by responsivity on a synchrotron radiation source is particularly relevant in monitoring luminance contrast thresholds and spatial distribution of object and background brightness, as well as determining metrological characteristics of optoelectronic measuring instruments, including CCD cameras, radiometers, spectroradiometers and photometers.
On adaptive identification of systems having multiple nonlinearities
Authors: Karabutov N. N.
Published: October 2023

Objectives. The solution to the relevant problem of identifying systems with multiple nonlinearities depends on such factors as feedback, ways of connecting nonlinear links, and signal properties. The specifics of nonlinear systems affect control systems design methods. As a rule, the basis for the development of a mathematical model involves the linearization of a system. Under conditions of uncertainty, the identification problem becomes even more relevant. Therefore, the present work sets out to develop an approach to the identification of nonlinear dynamical systems under conditions of uncertainty. In order to obtain a solution to the problem, an adaptive identification method is developed by decomposing the system into subsystems.

Methods. Methods applied include the adaptive identification method, implicit identified representation, S-synchronization of a nonlinear system, and the Lyapunov vector function method.

Results. A generalization of the excitation constancy condition based on fulfilling the S-synchronizability for a nonlinear system is proposed along with a method for decomposing the system in the output space. Adaptive algorithms are obtained on the basis of the second Lyapunov method. The boundedness of the adaptive system trajectories in parametric and coordinate spaces is demonstrated. Approaches for self-oscillation generation and nonlinear correction of a nonlinear system are considered along with obtained exponential stability conditions for the adaptive system.

Conclusions. Simulation results confirm the possibility of applying the proposed approach to solving the problems of adaptive identification while taking the estimation of the structural identifiability (S-synchronization) of the system nonlinear part into account. The influence of the structure and relations of the system on the quality of the obtained parametric estimates is investigated. The proposed methods can be used in developing identification and control systems for complex dynamic systems.
Ethno-medicinally Important Plants Utilized in Therapeutic Remedies on Various Ailments Found in Different Tribes of Dadra and Nagar Haveli (UT), India
Authors:   Department of Botany, M. G. Science Institute, Navrangpura, Ahmedabad, Gujarat, India., P. Patil Vijaykumar , D. A. Dhale ,   Department of Botany, S.S.V.P.S.’s, L. K. Dr. P. R. Ghogrey Science College, Dhule, India., C. Rathod Mayuri ,   Bio-technology Department, Veer Narmad South Gujrat University, Udhna-magdalla road, Surat, Gujarat, India.
Published: October 2023

The forest areas in Union territories of Dadra and Nagar Haveli (U.T.’s of DNH) has a wide variety of flora available, which contains several medicinal values known to the local tribes. Hence, it was thought of interest to survey the area for such plants and study their therapeutic values. An ethnomedicinal survey at a different remote area among the local communities of forest was carried out and details of the plants used in the folk medicine in Dadra and Nagar Haveli is presented in this work. Ethnobotanical surveys were made frequently for few years in favorable seasons of plants. Plants were identified by experts or by using established Flora. Details tabulated enumeration of 29 Genera with 30 Species belonging to 19 Angiosperm families have been studied. The verbal data of medicinal practices by tribals during survey has been gathered to record the plants being used traditionally by tribes to treat common human ailments such as common cold, fever, headache, hair and cutaneous eruptions, dental problems, complications in digestive, respiratory, circulatory, excretory, nervous, orthopedic and venomous bites, etc. The information on ethnomedicinal uses of plants has been presented with their scientific names, habits, local name with site, present status, plant parts used in treatment with suitable methods. The plants with ethnobotanical value identified in this study needs immediate conservation, plantation and rearing of endangered species at their natural habitats or also farming to local level.
Comparative Floristic Analysis of Angiosperms of Bundi District– A Part of Haroti Plateau (Rajasthan)
Authors:   Professor, Head Department of Botany, Government College, Bundi, India., Sharma O. P.
Published: October 2023

Plant diversity plays an important role in the life of human beings, by way of providing many valuables produces. They help in maintaining the biodiversity in an ecosystem. Abundant species diversity is essential for wealth of natural ecosystems and environment of the area. The present paper highlights comprehensive data on the current status of angiosperms diversity of Bundi district. The flora of Bundi comprises 629 species of angiosperms belonging to 381 genera under 104 families. The area shows much diversity of geographical forms and ecosystem ranges. This district is rich in scenic beauty and biodiversity. The ten dominant families of the area have been compared with those of adjacent areas as well as Upper-gangetic plain, North Gujrat and Delhi. The present work provides comparative analysis among angiosperms families, genera and species.
Effect of FYM, Phosphorus and PSB on Growth and Productivity of Mungbean [Vigna radiata (L.) Wilczek] as Influenced by Different Levels of FYM, Phosphorus and PSB
Authors:   Department of Soil Science & Agricultural Chemistry, Rajasthan College of Agriculture (MPUAT), Udaipur, Rajasthan, India., Ram Raiger Prahlad , Hari Meena Ram ,   Department of Soil Science & Agricultural Chemistry, Rajasthan College of Agriculture (MPUAT), Udaipur, Rajasthan, India., Prasad Parewa Hanuman ,   College of Agriculture, Sumerpur, Pali, Agriculture University, Jodhpur, Rajasthan, India., Singh Ummed ,   College of Agriculture, Baytu, Barmer, Agriculture University, Jodhpur, Rajasthan, India., Jat Gajanand ,   Department of Soil Science & Agricultural Chemistry, Rajasthan College of Agriculture (MPUAT), Udaipur, Rajasthan, India., Jain Devendra ,   Department of Molecular Biology and Biotechnology, Rajasthan College of Agriculture (MPUAT), Udaipur, Rajasthan, India., Narayan Mahawer Laxmi ,   Department of Horticulture, Rajasthan College of Agriculture (MPUAT), Udaipur, Rajasthan, India., Chand Meena Subhash ,   Department of Soil Science & Agricultural Chemistry, Rajasthan College of Agriculture (MPUAT), Udaipur, Rajasthan, India., Mordia Azad ,   Department of Statistics, Rajasthan College of Agriculture (MPUAT), Udaipur, Rajasthan, India., Nath Shukla Uma ,   College of Agriculture, Agriculture University, Jodhpur, Rajasthan, India.
Published: October 2023

Nutrient management has been a major constraint in mungbean cultivation, resulting in huge economic losses to farmers. Field experiments for two consecutive years were conducted at Instructional Farm of College of Agriculture, Jodhpur to evaluate the effects of different levels of Farm Yard Manure (FYM), phosphorus and bio-inoculants on growth and yield performance of mungbean during 2019 and 2020. The results revealed that application of FYM @5 t ha-1 significantly enhanced plant height, dry matter accumulation, seed and stover yield as compared to without application of FYM. Meanwhile, aggregate levels of phosphorus up to 100% resulted significantly increased in all growth parameters, seed and stover yield as compared to control. Similarly, significant enhancement in growth parameters, seed and stover yields was observed with seed inoculation either with Enterobacter cloacae or Bacillus amyloliquefaciens over no-inoculation during 2019 and 2020, respectively.