bluuebunny/crossref_metadata_2025 huggingface dataset:
Fossil Capitalism to Climate Capitalism: Contemporary Systems for Capitalist Accumulation and Incremental Climate Action
Authors: Griffiths Michael
Published: April 2023

Political economists have long developed theories to describe the relationship between our economic system, capitalism, and the environment. Laurie Adkin details some of the complexities of this issue in her work on climate capitalism and ecological democracy (2017, 3). She mentions ‘fossil capitalism,’ which is one of the foundational concepts in this ontology. More recently, the concept of ‘climate capitalism’ has emerged. Both fossil capitalism and climate capitalism are essential concepts to understand when studying the intersection of economic systems and the environment. In this paper, I will discuss the question: why have political economists developed the theoretical concept of ‘climate capitalism’ as a successor to ‘fossil capitalism?’ To address the question’s complexities, I will unpack it systematically, and consider related questions. In this paper, I argue that the shift from ‘fossil capitalism’ to ‘climate capitalism’ does not constitute a shift in the capitalist sentiment towards the environment, but rather is a strategic repositioning tactic of the capitalist accumulation class.
Gender and Justifying State-Sanctioned Military Prostitution in U.S.-Occupied Korea
Authors: Byrne Alyssa
Published: April 2023

This paper explores through a feminist lens how everyday gender roles created the social conditions required for military prostitution in US-occupied South Korea. It explores the historical, colonial context of this occupation as well as the implications for state- sanctioned action that favoured soldiers over exploited women.
Lupus eritematoso discoide lineal asociado a lupus eritematoso sistémico: reporte de caso y revisión de la literatura
Authors: Lopez Molinares Laura Isabel , Rojas Ricardo Flaminio , Vargas Roa Julian Camilo , Saaibi Rey Daniela
Published: April 2023

El lupus eritematoso discoide lineal es una enfermedad crónica de etiología desconocida. Se caracteriza por placas eritematosas que siguen las líneas de Blaschko y constituye una variante inusual del lupus eritematoso discoide. En la presente revisión, se describe el caso de una paciente femenina que consultó por lesiones en la cara, área alopécica en el cuero cabelludo asociado a manifestaciones de lupus eritematoso sistémico, quien obtuvo una adecuada respuesta al tratamiento farmacológico. La búsqueda de los artículos científicos para el desarrollo este reporte se realizó en las siguientes bases de datos: ClinicalKey, Ovid y PubMed. En la actualidad, es el primer reporte de caso clínico descrito de lupus eritematoso discoide lineal asociado a lupus eritematoso sistémico; se realizará una revisión de la literatura.
Síndrome de nevus azules cauchosos: reporte de un caso familiar
Authors: Tibaduiza Garcia Maria Fernanda , Ton Caren , Munera Marcos S. , Plaza Tenorio Maribel
Published: April 2023

El síndrome de nevos azules cauchosos (BRBNS, por sus siglas en inglés) o síndrome de Bean se caracteriza por la presencia de malformaciones venosas de bajo flujo en la piel y en el tubo digestivo. Es una entidad rara de causa desconocida, con casos espontáneos y otros con presentación autosómica dominante. Las lesiones pueden estar presentes al nacimiento o en la infancia, mientras que en otros casos son evidentes a lo largo de la vida por su aumento de tamaño y número.
Tumor doloroso violáceo. Parte 2
Authors: Gallego Vidales Leydi Yohana , Rodríguez Estupiñán Aura Catherine , Jaimes Ramírez Ángel Omar
Published: April 2023

Los tumores dolorosos de la piel son un reto diagnóstico para el médico dermatólogo por su evolución insidiosa e inespecífica. Estas lesiones son poco frecuentes correspondiendo aproximadamente al 2% de los tumores de tejidos blandos cutáneos, además se acompañan de síntomas dolorosos neuropáticos, destacándose la alodinia como síntoma cardinal. A continuación, se describe el caso de un paciente masculino de 76 años que presentó un tumor doloroso solitario de localización poco frecuente en el tercio distal de antebrazo derecho tratado quirúrgicamente. De esta manera se resolvió el dolor asociado y mejoró su calidad de vida.
The Effect of Audit Firm’s Characteristics on Audited Firm’s Cost of Equity Capital
Authors:   Korea Accounting Information Association, Wang Yeon Sang , Yoo Yong Keun , Lee Sang Hyuk
Published: April 2023

[Purpose]This study examines how the proportion of audit firms’ audit revenue affects the cost of equity capital of audited firms.
[Methodology]In this paper, regression analysis is performed based on a Korean sample of 301 observations between the years 2019 and 2020, when the standard audit hours policy was introduced under the revised Act on External Audit of stock companies.
[Findings]This study shows that the higher the ratio of audit revenue to the total sales of audit firms’, the lower the cost of equity capital of the audited firms. This result suggests that when the proportion of audit sales of an audit firm is high, the firm’s cost of equity capital is reduced by accumulating related experiences by focusing on audit service, and improving the quality and reliability of the audited firm’s financial reporting. Specifically, the result is found firms with higher largest shareholder ownership, lower foreign investor equity, and lower governance score of the Korea Corporate Governance Service (KCGS).
[Implications]Unlike most of the literature that considers the size of audit firms as the main characteristic of auditors, this study has a major contribution in that it empirically analyzes the correlation between various characteristics such as the sales structure of audit firms and the cost of equity capital. Furthermore, it provides practical implications that the audited firm should consider the auditor’s financial characteristics, such as sales structure, as well as the reputation and size of the audit firm in a situation where the audit fee burden of listed firms is increasing.
A Study on the Actual Condition of Accounting Education of Korean University in Uzbekistan
Authors:   Korea Accounting Information Association, Kim Jun-ho
Published: April 2023

[Purpose]The purpose of this study is to help universities that want to enter foreign countries, especially Uzbekistan. To this end, the current state and education in Uzbekistan were analyzed.In addition, the purpose of this study is to suggest a direction in which accounting education can be effectively conducted based on the experience of running the department of management and accounting.
[Methodology]Through theoretical research, the current situation, education system, and higher education status of Uzbekistan were analyzed.Based on experience in Uzbekistan, author described the actual conditions such as university admission and management and accounting department curriculum.Then, for an empirical study, students received 134 questionnaires and analyzed the direction in which accounting education could be effectively conducted.
[Findings]Students in Uzbekistan have difficulty with accounting in general rather than specific parts of accounting, because the concept of capitalism is weak. Also, the terminology of the major is difficult, making accounting more difficult. Therefore, professor will need frequent and easy explanations so that students can easily understand and familiarize themselves with the concepts of capitalism and accounting terminology. And students wanted the professor to solve many exercise, but since accounting is a practical science, they will have to solve many exercise so that they can learn practical skills.
[Implications]This study provides help to universities that want to enter Uzbekistan, and presents an effective accounting education method through empirical research. Although this study is an empirical study in Uzbekistan, it is considered that this study will be helpful to universities that want to enter foreign countries other than Uzbekistan.
The Effect of Related Party Transactions on Stock Price Delay
Authors:   Korea Accounting Information Association, Ryu Haeyoung
Published: April 2023

[Purpose]Korean firms have a characteristic that ownership is concentrated on specific people and relatives, and it has been reported that controlling shareholders pursue private interests through related party transactions. Firms report related party transactions through footnotes in financial statements, but the disclosure details are different for each firm. Therefore, firms with larger related party transactions have greater information asymmetry, so stock prices are not expected to immediately reflect transaction information.
[Methodology]The sample period used in this study was from 2011 to 2019, and an analysis was conducted on non－financial firms listed in the Korean stock market. Financial data and stock price data used in the analysis were extracted from the KIS－VALUE database, and data on related party transactions were collected from the TS2000 database. Referring to the study of Hou and Moskowitz (2005), stock price delay, a dependent variable of the study, was measured.
[Findings]The level of related party transactions had a positive relationship with the stock price delay phenomenon. The result can be interpreted as a slower rate at which stock prices reflect corporate information because firms with larger related party transactions have lower information transparency. In addition, the positive relationship between the size of related party transactions and the stock price delay phenomenon was significant only in chaebol firms.
[Implications]The results of this study call attention to investors so that they can make careful investment decisions in consideration of the fact that the larger related party transactions, the stronger the stock price delay may appear. In addition, it suggests that regulatory agencies need to reorganize related laws so that details of related party transactions are disclosed in order to prevent market abnormalities such as stock price delays.
Investigation of The Sportsmanship Behaviour of Secondary School Students in Physical Education and Sports Class
Authors: Yıldırım Mehmet , Köseoğlu Onur , Güney Gökhan
Published: April 2023

Bu araştırmanın amacı; ortaokul öğrencilerinin beden eğitimi ve spor dersinde sergiledikleri sportmenlik davranışlarının incelenmesidir. Araştırmanın çalışma grubunu 2022-2023 Eğitim-Öğretim yılında Kayseri ilinde ortaokul kademesinde
öğrenim gören 176 erkek (%48,9), 184 kız (%51,1) olmak üzere 360 gönüllü öğrenci oluşturmaktadır. Araştırmada veri toplama aracı olarak ‘’demografik bilgi formu (Cinsiyet, sınıf, lisanslı olarak spor yapma, anne eğitim düzeyi,
baba eğitim düzeyi, aylık gelir düzeyi) ve katılımcıların sportmenlik davranışlarını belirlemeye yönelik olarak ise Koç (2013), tarafından geliştirilen ‘Beden Eğitimi Dersi Sportmenlik Davranışı Ölçeği’ (BEDSDÖ) kullanılmıştır.
Veriler istatistiksel analizler için SPSS 20.0 paket programına aktarılmıştır. Analizlere başlamadan önce verilerin normal dağılım gösterip göstermediğini incelemek amacıyla çarpıklık ve basıklık değerleri incelenmiştir. Ölçeğe
ilişkin çarpıklık değerlerinin -,750 ile -1.620 arasında basıklık değerlerinin -.005 ile 2.989 arasında olduğu tespit edilmiş ve normal dağılım sergilediği belirlenmiştir. Verilerin çözümlenmesinde frekans analizi, yüzde analizi,
t testi, Anova analizi kullanılmıştır. Gerçekleştirilen analizler sonucunda; katılımcıların en çok uygunsuz davranışlardan kaçınma gösterdikleri (X̄=4.48), genel olarak ise sportmenlik davranışları düzeylerinin yüksek olduğu (X̄top=
93.12) tespit edilmiştir. Cinsiyet ve sınıf değişkenlerine göre katılımcıların sportmenlik davranışları düzeyleri arasında istatistiksel olarak anlamlı farklar tespit edilmiştir (p<0.05). Lisanslı olarak spor yapma, anne eğitim
düzeyi, baba eğitim düzeyi, aylık gelir düzeyi değişkenlerine göre ise anlamlı farklar tespit edilmemiştir (p>0.05).
OBSTACLES FACED BY BREAST CANCER PATIENTS: FROM EARLY DIAGNOSIS TO TREATMENT DIAGNOSIS TO TREATMENT
Authors: Costa Christina Souto Cavalcante , Rahal Rosemar Macedo Sousa , Soares Leonardo Ribeiro , Marta Gustavo Nader , Cardoso Debora Sara de Almeida , Silva Rafaela Dutra
Published: April 2023

Objective: The objective of this study was to evaluate the factors that influence the early detection and initiation of treatment of patients with breast cancer Methods: This is a cross-sectional, descriptive study, conducted between January and December 2020. A structured study was carried out with 102 patients from a tertiary service in the central region of Brazil. Results: There was a prevalence of women aged 41–60 years (66%), of brown ethnicity (56.9%), and who had completed elementary school (52.9%). In total, 58.8% of women sought the health service annually and 50.0% had never realized mammography (MMG) before the initial symptom, being “nodule” the most cited finding (80.4%). Among the difficulties faced in making the first appointment, fear of the diagnosis was the most cited (83.3%). MMG and biopsy were performed in 56.9% and less than 4 weeks in 56.9% of cases, respectively. In contrast, returns with the result of mammography and biopsy were 67.6% and 71.6%, respectively. In 77.5% of the cases, the specialist consultation after the biopsy occurred within less than 4 weeks and the beginning of treatment in 53.9% of the samples. As for the tumor characteristics, 61.8% of the patients had a positive axilla, 48.0% had tumor stage (G2), and 21.6% with IIIB staging. We observed a predominance of Luminal HER tumors (33.3%) and a mean Ki-67 of 33.46% (±21.22), with 8.8% of metastatic patients at diagnosis. Conclusion: In this sample of women users of the public health service, low awareness and low MMG coverage were observed, culminating in a higher prevalence of advanced stages at diagnosis. Confronting the obstacles related to the diagnosis and treatment of breast cancer can attenuate the socioeconomic differences and improve the oncological outcomes in this population.
Antimicrobial Activity Test of Bitter Melon (Momordica charantia L.) Plant Extract Against Staphylococcus epidermidis, Escherichia coli Bacteria and Candida albicans
Authors: Rasmi Dewa Ayu Citra , Zulkifli Lalu , Ahadia Nurul
Published: April 2023

Bitter gourd (Momordica charantia L.) contains secondary metabolites of flavonoids, alkaloids, saponins, and steroids that act as antimicrobials. This study aimed to determine the antimicrobial activity of bitter melon (Momordica charantia L.) plant extract in N-hexane and ethanol solvents against Staphylococcus epidermidis, Escherichia coli, and Candida albicans. This research is an experimental laboratory study, namely the antimicrobial activity test of bitter melon plant extract on the growth of test bacteria using the agar diffusion method. The study's experimental design used a Completely Randomized Design with three repetitions at three concentration variations, namely 30%, 45%, and 60%. Then phytochemical screening was carried out to determine the active compounds in the bitter melon plant extract. Data on the inhibitory power of bitter melon plant extract were analyzed qualitatively, and the differences between concentrations were seen using the ANOVA (Analysis of variance) test. The results showed that bitter melon (Momordica charantia L.) plant extract in ethanol solvent showed activity against the growth of Staphylococcus epidermidis, Escherichia coli bacteria with a concentration of 60%, producing a powerful inhibition zone.
Poly-Coated Brown Wrapping Paper Sheet as an Alternative to Black Plastic Film Mulch in Bhendi
Authors:   Mother Terasa College of Agriculture, Illuppur, Pudukkottai – 622 102, P Manidurai Manoharan David , G Mathan Kumar ,   Mother Terasa College of Agriculture, Illuppur, Pudukkottai – 622 102
Published: April 2023

Black plastic film mulching is widely practiced in crop production, especially in horticultural systems, because of its multiple benefits. However, its post-usage polluting residues and limited availability to farmers at all places cause concern. The objective of this study was to evaluate in a field experiment the potential of the commonly available stationery-purpose poly-coated brown wrapping sheet mulching in bhendi [Abelmoschus esculentus (L.) Moench] in comparison with black plastic film mulching. Observations made on plant height and fruit yield, soil temperature and soil microbial population revealed that the less-polluting poly-coated brown wrapping sheet mulching was as good as the black plastic film mulching in performance which is discussed in the light of increase in plant growth and yield, moisture conservation and weed suppression, root-zone temperature moderation and termite activity.
Farmers Attitude Towards Private Agricultural Extension Services (PAES): A Guttman Scalogram Analysis
Authors:   1Department of Agricultural Extension and Rural Sociology, Tamil Nadu Agricultural University, Coimbatore – 641003., Sree Madhumitha , C Karthikeyan ,   1Department of Agricultural Extension and Rural Sociology, Tamil Nadu Agricultural University, Coimbatore – 641003., L Nirmala Devi ,   1Department of Agricultural Extension and Rural Sociology, Tamil Nadu Agricultural University, Coimbatore – 641003.
Published: April 2023

Farmers need accurate and timely information to increase crop production and productivity. However, market price fluctuations and extension approach changes inspired the farmers to opt for private agricultural extension systems. The decision to adopt or reject an innovation depends on the farmer's attitude toward the innovation. Thus, the present study was undertaken to assess the unidimensional nature of scale through the scalogram technique (Good enough technique) and to administer the scale in analyzing the farmer's attitude towards PAES. Based on the review of literature and discussion with experts, 7 favorable statements were selected to assess the farmer's attitude towards PAES. To check the coefficient of reproducibility of the developed scale, it was administered with 15 subjects and found to be 0.83, indicating the scale's reliability. Simultaneously, the developed scale was employed to assess the attitude of farmers towards PAES and found that more than half of the farmers (53.33%) had a favorable attitude. Most of the farmers suggested that continuous monitoring and regulation of PAES should be done to ensure proper functioning.
Effectiveness, longevity, and color stability of in-office bleaching (6% H2O2 gel/Violet LED) and diastema closure with direct composite: 3-year follow-up
Authors: Larissa Luri Almeida Amorim Ikejiri , Larissa Álamo , Mateus Zamora Galli , Juliana Fraga Soares Bombonatti , Marilia Mattar de Amoêdo Campos Velo , Rafael Francisco Lia Mondelli
Published: April 2023

To reduce bleaching side effects, the use of low concentrations of Hydrogen Peroxide (HP) agents associated with hybrid light (violet LED/Diode Laser) has gained interest. Case report: The aim of this report is to describe a case of a 16-year-old patient that presented a complaint related to the color of his teeth and a maxillary midline diastema. In-office bleaching with 6% HP associated with hybrid light (violet LED/Diode Laser) was performed. The bleaching gel was applied once on the teeth and light-activated for 1 minute (15 times) followed by 1min intervals (15 times) with a total bleaching time of 30 minutes. After the bleaching procedure, the teeth were polished and the desensitizer was applied for 4 minutes. Two bleaching sessions were performed at a 1-week interval. The diastema was closed with direct resin composite restorations without any tooth preparation. The conventional 3-step bonding agent was used and A1 dentin shade and B1 enamel shade were used followed by polishing discs. At 3-year recall, discoloration and fractures were not found on the the teeth or restorations and patient was completely satisfied. Conclusion: the conservative and safe option of bleaching with a low-concentrated HP gel associated with violet LED light is an interesting option for young patients and presents longevity over time.
Current and emerging trends in oro-dental healthcare and cranio-maxillo-facial surgery
Authors: Ziyad S Haidar
Published: April 2023

Dentistry is an ever-evolving field that has seen significant advances in recent years. This article sheds light on some of the current and emerging trends in oral health care, including digital dentistry, regenerative medicine, and the use of lasers. For example, digital dentistry involves the use of computer-aided design and manufacturing technology, which enables more accurate and efficient production of dental devices. On the other hand, regenerative medicine and nanoDentistry can be considered promising area that combines the use of stem cells, growth factors, biomaterials, and nanotechnology to regenerate damaged tissue and improve treatment outcomes. Lasers are increasingly being used in dentistry for a range of applications, including the treatment of gum disease and teeth whitening. Other developing technologies such as 3D printing and artificial intelligence are also being increasingly incorporated into dentistry, providing improved treatment options for our patients. Last yet definitely would/will not least, controlled drug delivery systems are being developed to deliver drugs to specific target sites in a localized and sustained manner, reducing the risk of adverse effects. Currently, these emerging trends are transforming the landscape of odontology and beyond. Hence, in this mini-Review, we explore such trends in oro-dental and cranio-maxillo-facial indications to highlight the potential benefits, advancements, and opportunities of applications for improved patient care.
Evaluation of proximate composition, physical and sensory properties of soybean supplemented wheat bread
Authors: Obasi B.C  , Abur E. V  , Zakka R
Published: April 2023

This present study evaluated proximate composition, physical and sensory properties of soybean supplemented wheat bread in order to ascertain its nutritional quality. Standard analytical methods were used for the analyses. The formulation for the composition of soybean supplemented wheat bread were in the ratios of (100: 0:, 90:10, 80:20,70:30,60:40 and 50:50 %) for wheat and soybean flour blends. The result for proximate composition of soy supplemented wheat bread showed that samples with flour blends of 50:50% , 60:40%,and 70:30% had the highest value at (P<0.05) for protein (42.50- 45.50%), fibre (16.50-25.50%) and ash(1.05-1.90) when compared with the control sample(31.50,13.50,and1.25%) respectively . For physical properties the results revealed that the control sample (100% wheat bread) had the highest value for height, loaf volume and specific volume while 50:50% soybean supplemented wheat bread had the highest value for weight. The result for sensory properties evaluated in terms of all parameters assessed showed that soy supplemented wheat bread at 80:20 ranked best when compared with the 100% wheat bread and was generally accepted by the consumers. Thus it can be concluded that the supplementation of wheat flour with soya bean flour improved the nutritional component of the bread as revealed by the result obtained especially in relation to increase in protein, ash, and fibre, content which will boost the protein level of bread, improve mineral, enhance digestion and reduce constipation often associated with bread produced from refined wheat flour.
Analisis Kepemimpinan dalam Gereja: Studi Perbandingan Kepemimpinan Gereja Protestan dan Gereja Pentakostal
Authors: Gultom Rogate Artaida Tiarasi , Siagian Albiner , Harianja Simion Diparuma , Gea Ibelala , Widiastuti Maria , Waruwu Liyus
Published: April 2023

Abstract. This research aimed to prove that leadership in the church plays an important role in creating a healthy and dynamic church life. This research is a field research using a combination of qualitative and quantitative methods. The results showed that there are differences in leadership between the Indonesian Protestant Christian Church (GKPI) and the Indonesian Holy Pentecostal Church (GEPKIN), where the leadership style in GKPI is transformational, while leadership in GEPKIN applies more spiritual leadership/pastoral leadership style. The difference in leadership style shows that the leadership style must be relevant to the characteristics of the church to be able to create a healthy and dynamic church life.Abstrak. Penelitian ini bertujuan untuk membuktikan bahwa kepemimpinan di gereja memegang peranan penting dalam menciptakan sebuah organisasi untuk mewujudkan kehidupan gereja yang sehat dan dinamis. Penelitian ini merupakan penelitian lapangan dengan menggunakan gabungan antara metode kualitatif dan kuantitatif. Hasil penelitian menunjukkan bahwa terdapat perbedaan kepemimpinan antara Gereja Kristen Protestan Indonesia (GKPI) dan Gereja Pantekosta Kudus Indonesia (GEPKIN), di mana gaya kepemimpinan di GKPI adalah transformasional, sedangkan kepemimpinan di GEPKIN lebih menerapkan gaya kepemimpinan rohani/kepemimpinan pastoral. Perbedaan gaya kepemimpinan tersebut menunjukkan bahwa gaya kepemimpinan harus relavan dengan karakteristik gereja untuk dapat mewujudkan kehidupan gereja yang sehat dan dinamis.
Ways to increase the maneuverability characteristics of the CCGT when operating in load control modes (for example, CCGT-450)
Authors: Arakelyan E. K.
Published: April 2023

THE PURPOSE The article is devoted to the analysis of the problems that arise during the operation of heating CCGTs of the type CCGT-450 at reduced loads with their participation in the regulation of electrical and thermal loads. The description of the main limitations of the adjustment range of gas turbines, and the maneuverability characteristics of the CCGT, an analysis of some existing technical proposals for expanding the adjustment range is given. It is shown that the application of these proposals, expanding the boundaries of the adjustment range in small quantities, does not solve the problem as a whole. The description and research results of the proposed new technical solutions to expand the adjustment range and maneuverability characteristics of the CCGT - 450 are given.

METHODS. When solving the tasks, the analysis, comparison and generalization of energy characteristics, modeling of modes were carried out.

RESULTS. It is shown that: the use of methods for converting part of the central heating system and the central heating system as a whole of the T-125/150 steam turbine into a low-steam mode together with bypass steam distribution will expand the adjustment range to a level comparable to the adjustment range of condensing power units on gas-fuel oil;. when shutting down the CCGT-450 operating in condensation mode and when operating it in the GTU-CHP mode during periods of night failure of the electrical load, the conversion of the steam turbine to motor mode significantly improves the maneuverability and reliability characteristics of the steam turbine and the CCGT as a whole. conclusion. The use of methods for transferring part of the central heating system and central heating system as a whole and bypass steam distribution expand the adjustment range of the CCGT-450, respectively, by 7.8, 10.1 and 16.0% of the rated power; When the CCGT-450 is operating in condensation mode when the CCGT is stopped and when it is operating in the GTU-CHP mode during periods of night failure of the electric load, the steam turbine is transferred the MR significantly improves the maneuverability and reliability characteristics of the steam turbine by reducing the duration of start-up and loading of the steam turbine by 40 and 14.5 minutes, respectively, reducing starting fuel losses, eliminating temperature fluctuations of steam and metal of the steam intake organs of the central pump and the control stage during start-up;
Effect of the temperature and heating rate modes on the microstructure and mechanical properties of aluminum oxide: analysis of Spark Plasma Sintering mechanisms
Authors:   National Research Lobachevsky State University of Nizhny Novgorod, Boldin M. S. , Popov A. A. ,   National Research Lobachevsky State University of Nizhny Novgorod, Nokhrin А. V. ,   National Research Lobachevsky State University of Nizhny Novgorod, Chuvil’deev V. N. ,   National Research Lobachevsky State University of Nizhny Novgorod, Murashov A. A. ,   National Research Lobachevsky State University of Nizhny Novgorod, Sherbak G. V. ,   National Research Lobachevsky State University of Nizhny Novgorod, Tabachkova N. Yu. ,   National University of Science and Technology “MISIS”,   A.M. Prokhorov General Physics Institute, Russian Academy of Sciences
Published: April 2023

The effect of temperature and heating rate on the shrinkage kinetics of submicron and fine-dispersed aluminum oxide powders was investigated. The objects of the study were (1) submicron powder α-Al2O3, (2) submicron powder α-Al2O3 with an amorphous layer on the particle surface, (3) fine powder α-Al2O3. Ceramic samples were obtained by spark plasma sintering (SPS). Based on a comparison of powders (1) and (2) of the same dispersity the influence of the amorphous layer on the sintering kinetics was analyzed. Based on the comparison of powders (1) and (3) the effect of the initial particle size on the shrinkage kinetics was analyzed. Shrinkage curves were analyzed using the Young-Cutler model and the Coble model. It is shown that the sintering kinetics of submicron powders is determined by the intensity of the grain boundary diffusion process, and of fine powders by simultaneously proceeding processes of volume and grain boundary diffusion. It was found that the presence of an amorphous layer on the surface of submicron α-Al2O3 powder influences the grain boundary rate and the parameters of the Coble equation at the final stage of SPS. It was suggested that the abnormal characteristics of ceramics SPSed from submicron powder with an surface amorphous layer are related to the presence of an increased density of defects and excess free volume on the grain boundaries formed in the process of crystallization of the amorphous layer.
Investigation of the microstructure and phase composition of ceramics based on silicon carbide irradiated with low-energy helium ions
Authors:   Belarusian State University, Uglov V. V. , Kholad V. М. ,   Belarusian State University, Grinchuk P. S. ,   A.V. Luikov Heat and Mass Transfer Institute of NAS of Belarus, Ivanov I. А. ,   L.N. Gumilyov Eurasian National University,   Institute of Nuclear Physics, Kozlovsky А. L. ,   Institute of Nuclear Physics, Zdorovets М. V. ,   L.N. Gumilyov Eurasian National University,   Institute of Nuclear Physics
Published: April 2023

The effect of irradiation with helium ions with an energy of 40 keV and doses of 1·1014 – 2·1017 cm–2 on the microstructure and phase composition of ceramics based on silicon carbide has been studied. The irradiation growth of the 6H–SiC crystal lattice was revealed. However, at a dose of 1·1016 cm–2, there is a decrease in deformation associated with the formation of gas-vacancy clusters, which are sinks for radiation defects. Amorphization of the near-surface layer has been established.
Structural modification of fine powders of overburden rocks of saponite-containing bentonite clay
Authors:   Higher School of Engineering of the Northern (Arctic) Federal University named after M.V. Lomonosov, Ayzenshtadt A. M. , Korolev E. V. ,   aint Petersburg State University of Architecture and Civil Engineering, Malygina M. A. ,   Higher School of Engineering of the Northern (Arctic) Federal University named after M.V. Lomonosov, Drozdyuk T. A. ,   Higher School of Engineering of the Northern (Arctic) Federal University named after M.V. Lomonosov, Frolova M. A. ,   Higher School of Engineering of the Northern (Arctic) Federal University named after M.V. Lomonosov
Published: April 2023

The kinetic regularities of the process of structural modification of highly dispersed powders of saponite-containing material after mechanical dispersion have been studied. As information criteria characterizing the restructuring of the crystal lattice of minerals, changes are used that occur with the specific surface of powders at different grinding times and the exothermic thermal effect (enthalpy change) in the temperature range of 810 – 820 °С. It has been determined that during mechanical grinding of a saponite-containing material for more than 20 minutes, intensive modification of saponite occurs, associated with its structural changes, leading to the formation of serpentine. It has been established that the traditionally used criterion for evaluating the process of mechanical grinding of raw materials by the specific surface of the powder in this case is not a sufficient information parameter when optimizing structural changes in experimental samples. The dominant parameter of this process is the enthalpy factor, which characterizes the thermal effect of the structural modification.
Properties of coatings based on cerium dioxide produced by magnetron sputtering
Authors:   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (IMET RAS),, Baikin A. S. , Nasakina E. O. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (IMET RAS),, Kolmakov A. G. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (IMET RAS),, Sergienko K. V. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (IMET RAS),, Sudarchikova M. A. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (IMET RAS),, Sevostyanov M. A. ,   Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (IMET RAS),
Published: April 2023

The unique set of properties of coatings based on CeO2 has long been used in many industries. But the range of their potential application is no less wide, especially in view of the discovery of new properties. Magnetron deposition technology expands the area of possible application of coatings based on CeO2, making it possible to obtain products of various sizes and geometries. This review presents the parameters of magnetron sputtering of coatings based on cerium dioxide, their relationship with the structure and key properties of these coatings. The influence of the type of target, the introduction of oxygen into the sputtering medium, changes in the sputtering power, bias voltage, type of substrate and its temperature on the structure, mechanical properties, and hydrophobicity are considered.
Identification andAnalysis ofUnderdeveloped Village inThe Border Area ofBogor District (Studi Wirajaya Village Jasinga)
Authors:   Fakultas Ekonomi Universitas Pakuan, Herman Herman , Hartini Sri ,   Fakultas Ekonomi Universitas Pakuan, Mulyaningsih May ,   Fakultas Ekonomi Universitas Pakuan
Published: April 2023

One measure of the success of village development is measured by the achievement of the Village Development Index (IDM), the status of success in the IDM is seen from 5 categories, namely (1). The status of villages is very disadvantaged, (2), underdeveloped villages (3), developing villages (4), advanced villages and (5), independent villages. The villages in the border areas are really cause for concern. Based on the size of the Village Development Index (IDM) 2020, the number of villages on theborder that have underdeveloped status and are very disadvantaged is very dominant. Wirajaya village is the only village in Jasinga District that is included in the category of underdeveloped villages with an IDM in 2020 of 0.5819. Sampling was done by collecting data on all economic, social and environmental aspects. Each indicator has a score. The score was determined using the Analitycal Hierarchy Process (AHP) method. The calculation of the index on each dimension is carried out using the scoring method which is then transformed into an index. The social resilience index consists of 4 indicators: health, education, social capital, and housing. Health indicators have the lowest contribution of 0.57. The economic resilience index consists of 6 indicators,namely, indicators of diversity in production, trade, distribution access, access to credit, economic institutions, regional openness. Of the six indicators, the lowest contribution is the logistic distribution access indicator, which is 0.00. The environmental resilience index consists of 3 indicators, namely, environmental quality indicators, disaster-prone potential and disaster response. Of the three indicators, the lowest contribution is the disaster-prone potential indicator of 0.00.
CUSTO DIRETO COM TECNOLOGIAS PARA MANEJO DA COLOSTOMIA DEFINITIVA EM UM SERVIÇO ESPECIALIZADO
Authors: Alonso Claudiomiro da Silva , Borges Eline Lima , Ruas André Monteiro Lima , Garcia Taysa de Fatima
Published: April 2023

Objetivos:Identificar o custo direto de um serviço especializado com o uso de equipamentos coletores e adjuvantes e compará-lo com o custo simulado da autoirrigação intestinal em pessoas com colostomia definitiva. Método: Estudo descritivo-exploratório conduzido por meio da abordagem quantitativa nos moldes de estudo de casos múltiplos. A amostra por conveniência foi composta de 22 participantes cadastrados em um serviço especializado do norte de Minas Gerais. A coleta de dados foi realizada em prontuários do período de janeiro de 2019 a janeiro de 2020. Resultados: Dos participantes, 59,1% apresentaram complicações relacionadas à estomia e pele periestomia. Em relação aos equipamentos coletores/adjuvantes, o custo variou de 2.340,00 a R$ 5.535,00, custo médio de R$ 4.050,01 e desvio padrão amostral de R$ 770,31. O custo direto médio com autoirrigação de colostomia foi de R$ 3.793,44. Conclusão: O custo direto médio dos equipamentos coletores/adjuvantes foi superior ao da autoirrigação de colostomia, impactado pela presença de complicações e pelo valor do protetor de colostomia.
A Review of Chigger Mites (Trombiculidae) Associated with Lacerta spp. (Reptilia: Lacertidae) from Caucasus and Adjacent Territory
Authors: Orlova Maria V. , Doronin Igor Vladimirovich , Doronina Marina A. , Anisimov Nikolay V. , Dolgova Irina G.
Published: April 2023

Trombiculid mites are known as vectors of larvae of Ericotrombidium caucasicum Schluger, 1967, Lacertacarus latus Schluger et Vasilieva, 1977, and Schoengastia sp. chigger mites (Acariformes: Trombiculidae) were collected from lizards Lacerta strigata and L. agilis (Reptilia: Lacertidae) in the Caucasus and adjacent territory (Iran). Our record of Ericotrombidium caucasicum in Azerbaijan is the first finding of the species in this country. Also, results of E. caucasicum on L. strigata and Lacertacarus latus on L. agilis are new host-parasite associations. Schoengastia sp. has been reported from L. strigata for the first time.
Age Structure and Growth Rate of the Triploid Batura Toad, Bufotes baturae (Anura: Bufonidae), Inhabitant of a High Altitude Hot Spring in the Eastern Pamirs (Tajikistan)
Authors: Kidov Artem A. , Lyapkov Sergey M. , Stepankova Irina V. , Afrin Kirill A. , Kidova Elena A. , Kondratova Tatyana E. , Litvinchuk Spartak N.
Published: April 2023

The paper reports the results of the first skeletochronological study of age structure and distinguishing characteristics of growth in the triploid toad Bufotes baturae, inhabitant of Sasyk-Bulak hot spring in the Pamir Mountains (3797 m a.s.l.). Minimal and maximum ages of males of the species were three and seven years, respectively. The age of females ranged from three to six years. Mean age for both sexes was 4.0 years. The majority of males (46.2%) were three years old, most females (58.8%) were four years old. The age of sexual maturity was reached after three hibernations (46% in males and 24% in females). The majority of toads breed once at the age of three or four years. Only few (18% in females and 23% in males) individuals in this population were older. Harsh high-altitude cold desert conditions and limited food resources may cause high mortality of the toads. The correlation between the minimal age at sexual maturity and the degree of dryness of climate was demonstrated among species of the genus Bufotes. As a rule, toads which live in more humid climatic conditions mature earlier. Perhaps, this explains that substantial part of semi-aquatic individuals of B. baturae in the hot spring mature at earlier age (3 years) than other polyploid species (4 – 5 years) that inhabit arid environments. In both sexes of B. baturae, growth rate was similar to that of other closely related high-mountain species, diploid B. latastii and triploid B. pseudoraddei.
A Within-Group Approach to Ensemble Machine Learning Methods for Causal Inference in Multilevel Studies
Authors: Suk Youmi
Published: April 2023

Machine learning (ML) methods for causal inference have gained popularity due to their flexibility to predict the outcome model and the propensity score. In this article, we provide a within-group approach for ML-based causal inference methods in order to robustly estimate average treatment effects in multilevel studies when there is cluster-level unmeasured confounding. We focus on one particular ML-based causal inference method based on the targeted maximum likelihood estimation (TMLE) with an ensemble learner called SuperLearner. Through our simulation studies, we observe that training TMLE within groups of similar clusters helps remove bias from cluster-level unmeasured confounders. Also, using within-group propensity scores estimated from fixed effects logistic regression increases the robustness of the proposed within-group TMLE method. Even if the propensity scores are partially misspecified, the within-group TMLE still produces robust ATE estimates due to double robustness with flexible modeling, unlike parametric-based inverse propensity weighting methods. We demonstrate our proposed methods and conduct sensitivity analyses against the number of groups and individual-level unmeasured confounding to evaluate the effect of taking an eighth-grade algebra course on math achievement in the Early Childhood Longitudinal Study.
Latent Transition Cognitive Diagnosis Model With Covariates: A Three-Step Approach
Authors: Liang Qianru , la Torre Jimmy de , Law Nancy
Published: April 2023

To expand the use of cognitive diagnosis models (CDMs) to longitudinal assessments, this study proposes a bias-corrected three-step estimation approach for latent transition CDMs with covariates by integrating a general CDM and a latent transition model. The proposed method can be used to assess changes in attribute mastery status and attribute profiles and to evaluate the covariate effects on both the initial state and transition probabilities over time using latent (multinomial) logistic regression. Because stepwise approaches generally yield biased estimates, correction for classification error probabilities is considered in this study. The results of the simulation study showed that the proposed method yielded more accurate parameter estimates than the uncorrected approach. The use of the proposed method is also illustrated using a set of real data.
On the nonlinear Volterra equation with conformable derivative
Authors: NGUYEN HOANG Tuan , NGUYEN MİNH Hai , PHUONG Nguyen Duc
Published: April 2023

In this paper, we are interested to study a nonlinear Volterra equation with conformable derivative. This kind of such equation has various applications, for example physics, mechanical engineering, heat conduction theory.

First, we show that our problem have a mild soltution which exists locally in time. Then we prove that the convergence of the mild solution when the parameter tends to zero.
Prevalence, comorbidities, and factors associated with prolonged grief disorder, posttraumatic stress disorder and complex posttraumatic stress disorder in refugees: A systematic review
Authors: Lechner-Meichsner Franziska , Comtesse Hannah , Olk Marie
Published: April 2023

Background: The number of refugees worldwide is at an all-time high, many of whom have been exposed to potentially traumatic events and the loss of loved ones. The 11th revision of the International Statistical Classification of Diseases and Related Health Problems now includes prolonged grief disorder and complex posttraumatic stress disorder and revised criteria for posttraumatic stress disorder. An overview of these stress-related disorders among people who have become refugees is therefore needed. Consequently, we conducted a systematic review to determine prevalence rates, comorbidities, and associated factors for each of the disorders. Method: We systematically searched PubMed, Web of Science, and PsycArticles to identify studies that reported prevalence rates, predictors or associated factors, and/or comorbid mental disorders for either: 1) prolonged grief disorder, 2) posttraumatic stress disorder, or 3) complex posttraumatic stress disorder among refugees. The selection process followed the PRISMA guidelines. Results: A total of 36 studies met the inclusion criteria. Most of the studies were of a high quality. There was substantial variation in prevalence rates by disorder, with prolonged grief ranging from 6% to 54%, posttraumatic stress disorder ranging from 0.4% to 80%, and complex posttraumatic stress disorder ranging from 3% to 74.6%. Pooled prevalence for posttraumatic stress disorder was estimated at 29.8% in treatment seeking samples and 9.92% in population samples. For complex posttraumatic stress disorder, it was estimated at 57.4% in treatment seeking samples and 7.8% in population samples. Posttraumatic stress disorder was among the most frequent comorbidities for prolonged grief disorder while depressive symptoms were the most frequently occurring co-morbidity across all three disorders. Sociodemographic variables, trauma exposure, and loss characteristics were associated with higher symptom severity. Postmigration living difficulties played an important role in prolonged grief and complex posttraumatic stress disorder.
Difficulties faced by physicians from four European countries in rebutting anti-vaccination arguments
Authors: Holford Dawn Liu , Schmid Philipp , Fasce Angelo , Garrison Amanda , Karlsson Linda C. , Taubert Frederike , Verger Pierre , Lewandowsky Stephan , Fisher Harriet , Betsch Cornelia , Rodrigues Fernanda , Soveri Anna
Published: April 2023

Physicians play a critical role in encouraging their patients to get vaccinated, in part by responding to patients' concerns about vaccines. It is therefore important to understand what difficulties physicians have in dealing with different concerns they may encounter. We investigated physicians' perceptions of difficulties in rebutting different anti-vaccination arguments from patients using data collected as part of a cross-sectional, cross-national questionnaire on physicians' vaccine attitudes and behaviours. Physicians in four European countries (Finland, Germany, France, and Portugal, total n = 2,718) rated 33 different arguments, chosen to represent 11 different psychological motivations, in terms of their perceptions of how difficult each argument would be to rebut. Across all countries, physicians perceived arguments based on religious concerns and “reactance” (i.e., resistance to perceived curbs of freedom) to be the most difficult to rebut, whereas arguments based on patients' distorted perception of the risks of disease and vaccines were perceived as the easiest. There were also between-country differences in the level of perceived difficulty of argument rebuttal. Physicians' perceived difficulty with rebutting arguments was significantly negatively correlated with their vaccine recommendation behaviours and their preparedness for vaccination discussions. Physicians may feel better equipped to counter arguments that can be rebutted with facts and evidence, but may need support to respond when arguments are motivated by more complex psychological dispositions.