bluuebunny/crossref_metadata_2025 huggingface dataset:
The Development of Mathematical Problem-Solving and Reasoning Abilities of Sixth Graders by Organizing Learning Activities Using Open Approach
Authors: Seepiwsiw Karuna , Seehamongkon Yannapat
Published: May 2023

The researchers found that sixth-grade students at Traimit Pattana Suksa School had limited problem-solving and mathematical reasoning skills, which was attributed to the way their learning activities were organized by their teachers. The traditional approach did not allow students the freedom to think and practice solving a variety of problems in unconventional ways that mirror everyday life. To address this, the researchers applied an open approach to organizing activities and developed learning activities that fostered problem-solving and mathematical reasoning skills of the students. The goal of the study was to achieve an average score of not less than 70% using action research based on the concepts of Kemmis and McTaggart. Data were collected using a Sub-test at the end of the operating spiral, Mathematical Problem-Solving Ability Test, Math Reasoning Ability Test, and student behavior observation form. The data were analyzed using descriptive statistics, including percentage, mean, and standard deviation. The findings showed that the open approach to organizing activities can effectively develop the mathematical problem-solving and reasoning capabilities of students. The students were able to create work pieces, explain different types of 3D geometric shapes, show how to find the volume of a rectangular shape from given problem situations, and provide reasons to verify their ideas.

According to the test results, 13 students (81.25% of the total number of students) had the ability to solve mathematics problems at 70% or higher, and 15 students (93.75% of the total number of students) had mathematical reasoning ability that met the criteria of 70% or higher.
The Management Guidelines to Strengthen the Education and Knowledge of Members of a Cooperative Credit Union in South Thailand
Authors: Chaiyapong Akkakorn , Dhammasaccakarn Wanchai , Chuaboon Wanchai , Jaroensombut Lertlak , Sakolnakorn Thongphon Promsaka Na
Published: May 2023

The aim of this paper is to study the key points of managing cooperative credit unions in south Thailand and how to strengthen the education and knowledge of the management team, staff and members. This paper is based on a qualitative method via in-depth interviews and a focus group with members and committees of cooperative credit unions in south Thailand; data were analyzed using content and descriptive analysis. Results showed that the most problematic issue is a lack of transparency in the management and patronage systems, leading to corruption. In addition, the key points for developing guidelines for this type of credit union include members’ understanding and knowledge about the objectives of the cooperative system; updated regulations and legal measures concerning a deposit protection system; revised rules and regulations for loan policies, human resources, and information technology; government policies for strengthening cooperative credit unions; and allocating more budget to educate their staff and members, such as a training course and a visit to another cooperative credit union. In addition, the Cooperative Promotion Department and Cooperative Auditing Department of Thailand should improve the law and auditing method to strengthen and clarify the organization’s operations.
Postmodernism in Visual Arts Lesson and Its Reflections on Students
Authors: Tetikci Ismail , Erim Gonca , Baykan Kevser
Published: May 2023

Postmodernism emerged as a movement that opposed the dominant views of modernism in the field of art. Postmodernism, which originated in architecture and gradually influenced many areas of art, is discussed in this study with a focus on painting and visual arts education. In high school programs in Turkey, it is important for students to be able to examine the past, embrace the present, the era, and the postmodern way of thinking. When the relevant literature was reviewed, it was determined that there is no research on how postmodernism is used in art education in terms of student learning outcomes. The aim of this research is to determine how high school visual arts teachers incorporate the postmodernism movement into their teaching and to identify any changes in students’ interest levels in the course. In this study, a qualitative research method was used, specifically the case study design. The sample of the study consisted of four visual arts teachers who work in one central and three district schools in Yalova province. Two semi-structured interview forms and document analysis were used as data collection tools. The findings were analyzed using thematic analysis. According to the research findings, it was determined that the participating teachers conveyed the artistic and intellectual structure of postmodernism to students through various teaching methods during the lesson process. However, they were unable to achieve all the learning outcomes related to postmodernism. The study also revealed that students demonstrated changes in the methods they preferred to employ in their artwork after learning about postmodernism and being exposed to examples of postmodern art. Moreover, students provided both positive and negative critiques, reflecting their aesthetic perspectives on postmodern artworks. This research is considered important in terms of serving as an example for teachers and contributing to the literature.
Components and Indicators Framework of the Growth Mindset for Enhancing Learning Management of Teachers in the Primary Schools Under the Office of the Basic Education Commission
Authors: Khunaprom Tantikorn , Chansirisira Pacharawit
Published: May 2023

This research aims to explore the components and indicators framework of the growth mindset for enhancing learning management and examines establish the alignment of the model and its indicators with empirical data for teachers in Primary schools. The study is divided into two steps; the first step involved the development of indicators for the growth mindset to enhance teachers’ learning management in Primary schools. This has involved a sample of nine experts in the field of the growth mindset using purposive sampling. The research instrument employed is a questionnaire with a 5-point rating scale consisting of 5 components and 21 indicators. The second step involved examining the components and indicators of the growth mindset for enhancing the learning management of teachers in Primary schools. The sample consisted of 433 teachers in Primary Schools by multi-stage random sampling. The research tool was a 70-item, 5-level closed-end rating scale questionnaire called the Growth Mindset Framework for teachers by collecting empirical data. The index of the discrimination indicators of 0.359 to 0.874 and the reliability of 0.979. The data analysis used descriptive statistics, Pearson correlation coefficients, and affirmative component analysis with Mplus 8.0. The results showed that A) There are 6 components and 21 indicators by synthesizing relevant papers and research. They have been assessed by 9 qualified experts suggesting that they are overall at the highest level. B) The results of the consistent examination of empirical data and models of components and indicators of the growth mindset for enhancing learning management among teachers in Primary schools were consistent. By using chi-square (x2) is equal to 33.927 at 41 degrees of freedom (df), the p-value is equal to 0.7753, the harmonization index (CFI) is 1.000, the TLI is 1.005, the average square quadratic index of estimated difference (RMSEA) is 0.000, the square root of the remaining squared mean in the form of a standard score (SRMR) is 0.036.
Modeling of the Vapor-Liquid Equilibria Properties of Binary Mixtures for Refrigeration Machinery
Authors: MAALEM Youcef , TAMENE Youcef , MADANİ Hakim
Published: May 2023

The presence of both critical and azeotropic states in the vapor-liquid equilibria (VLE) is a very important issue in the chemical and refrigeration engineering. The knowledge of the phase behavior (subcritical phase/supercritical phase) of refrigerant allows designing and optimizing the refrigeration industrials processes. However, it is rare to find data for this information, which poses a great challenge for researchers to develop predictive and correlative thermodynamic models. The present study proposes the computation of the compositions and pressures of critical and azeotropic points of the isothermal VLE as well as the correlation of experimental VLE data. Firstly, experimental data (PTxy) was used to predict the vapor-liquid phase of both critical and azeotropic behaviors and to determine their properties using the relative volatility model. Secondly, the thermodynamic model (PR-MC-WS-NRTL) was applied to correlate the data of the binary refrigerant systems and describe their isothermal (VLE) behavior. The results proved that there is good agreement between predicted values obtained by the developed model and the experimental reference data. The relative error of both critical and azeotropic properties does not exceed 4.3 % for the molar fraction and 7.5 % for the pressure using relative volatility model. On other hand the relative deviation is respectively less than 2.60 % and 2.58 % for the liquid and vapor mole fractions using (PR-MC-WS-NRTL) model. This shows the ability of these models to give a reliable solution to predict and modulate the phase behavior of the binary refrigerant systems.
Optimization of a Dry Peeling System for Tomatoes Using Approximate Solutions
Authors: METALLO Antonio
Published: May 2023

In recent years tomatoes have been peeled using steam and lye. Both are costlier, less environmentally friendly and highly polluting techniques. Thus, more sustainable alternatives should be sought after. Among these alternatives is radiative heating. To appropriately design the system for dry peeling, several typical operational characteristics of the process in issue must be estimated. The analytical model presented allows estimates to be made through closed-form relationships between the parameters involved. The analysis is based on the use of an appropriate theoretical model, which facilitates the solution to the proposed problems. Through the approximate solution of the analytical problem, we will analyse: the angular speed Ω, the temperature fluctuations ΔT0, the process time tc. These estimates are then used to derive a specific model for a control of process. The temperature profile (through an approximate solution) associated with the process that provides the optimum peel quality was utilized as a guide for the regulation system. A control system used the code to extract a specific temperature, and based on surface tomato temperature readings, controlled a brushless motor using a logic strategy. The regulating system can adjust the rotation speed, and hence the heating intensity, even under less than perfect operating conditions in order to obtain the appropriate profile temperature. The controlled temperature profile yielded an average temperature of 66.3°C, while the reference case yielded a temperature of 67°C. Additionally, it was found that the temperature inaccuracy decreased with each rotation, ranging from 2.5 °C at 2π to 0.3 °C at 16π. As a result, the peeling procedure is standardized in time, temperature, and quality.
ADVANCED EXPERIENCES OF SOCIAL ENTREPRENEURSHIP IN DEVELOPED COUNTRIES
Authors: Nasretdinova Farangis
Published: May 2023

This article theoretically studies the state of development of social entrepreneurship and its importance in the national economy. Furthermore, quantitative analyzes of the state of development of this sphere in the world, forms of state registration of social entrepreneurship in foreign countries, including Italy, France, Germany, and Great Britain, sources of income, and directions of activity are demonstrated. Having studied the tested and advanced practices of developed countries, we can be sure that even their social policy programs are unable to solve social issues such as improving the activities of the third sector and increasing social services and social responsibility in the field of entrepreneurship. In that case, social entrepreneurship emerges as an auxiliary force of the country’s social policy.
SPECIFIC ASPECTS OF HOUSEHOLD FINANCE
Authors: Khodjiev Jahongir
Published: May 2023

This article is aimed at studying the indicators of the level of sources of formation of real incomes of the population of our country. Positive changes taking place in the structure of household income in household finances require improvement in the calculation of household income and the development of its methodology in accordance with international standards. This is the final positive result of the state policy of improving the well-being of the population. Scientific and theoretical recommendations and practical proposals have been developed to study the monetary income and expenditure of the population of our country using the methods of economic indicators, analysis of factors affecting the improvement of the welfare of the population and real incomes of the population
ONLINE LEARNING: A CHALLENGE FOR PARENTS
Authors: Iskandar Rizal , Sunaryanto Sunaryanto  , Agung Haryono
Published: May 2023

This study aims to find out what challenges parents face in online learning and to what extent parents are ready for online learning to take place. The research method used is a systematic literature review (SLR). The results of the study show that the challenges faced by parents in online learning include time constraints, learning atmosphere, digital literacy, facilities and infrastructure, gender, children's social development, children's health, and parents' social status. The results of the study also show that parents are not ready for online learning to be implemented. Future research needs to look at parents' views on children's cognitive development in online learning and develop appropriate learning platforms so that teacher-student-parent communication can be well established in online learning
Okul Yöneticilerinin Zorunlu Rotasyonu Üzerine Hazırlanmış Akademik Makalelerin İncelenmesi
Authors: GÖZLER Alpaslan , MENGÜÇ Zehra , GÜZEL Sevda , BABADAĞI Yasemin
Published: May 2023

Bu çalışmanın amacı, ilk kez 2010 yılında uygulamaya konulan zorunlu rotasyon uygulaması çerçevesinde Türkiye’de 2012-2022 yılları arasında yapılmış olan akademik çalışmaların bazı değişkenlere göre incelenmesidir. Çalışmada Google Akademik veri tabanında uluslararası düzeyde yayınlanan akademik çalışmalar ele alınmıştır. Okul yöneticilerinde rotasyonla ilgili var olan çalışmalara ulaşmak için alanyazın taraması yapılmış ve toplam 14 çalışmaya ulaşılmıştır. Nitel araştırma yöntemlerinden doküman incelemesi yoluyla gerçekleştirilen bu çalışma, araştırmanın ilişkilendirme alanlarına, anahtar kelimelerine, yayınlanma yıllarına, yazar sayılarına, yazarlarının unvanlarına, yazarlarının bağlı olduğu kurumlara, yöntemlerine, modellerine, veri toplama araçlarına, evren-örneklem kitlelerine ve örnekleme yöntemlerine göre analiz edilmiştir. Araştırmanın bulgularına göre; çalışmalarda nitel yöntem ön plana çıkmıştır. Evren ve örneklemi en çok yöneticiler oluştururken, örnekleme yöntemlerinden olasılık dışı örnekleme yöntemlerinin daha sık kullanıldığı belirlenmiştir. Ölçek ve görüşme formu en çok kullanılan veri toplama araç ve yöntemlerindendir. Çalışmaların yıllara göre dağılımına bakıldığında en çok yayının 2012 yılında yapıldığı, araştırmaların büyük çoğunluğunun yönetici-öğretmen görüşleriyle ilişkilendirildiği görülmüştür. Yazarların kadrolarının bağlı olduğu kurumlara göre devlet kurumlarının ağırlıkta olduğu, vakfa bağlı kurumlara ait tek bir yazar olduğu ortaya konmuştur. Okul yöneticilerine uygulanan zorunlu rotasyon uygulamasına ait yapılan araştırmaların az sayıda olduğu, rotasyon uygulama süresinin 8-10 yıl olması gerektiği, rotasyon uygulamasının bazı eksiklerinin olmasına karşın yöneticiler tarafından olumlu karşılandığı tespit edilmiştir. İleriki çalışmalarda, 2021 yılında güncellenen yönetici atama yönetmeliğinin ardından konuyla ilgili farklı çalışma grupları üzerinde çalışma yapılması önerilmiştir.
YÖNETiM YAKLAŞIMLARINDAN STRATEJİK YÖNETİM MODELİNİN İŞLETMELERİN GELECEĞINE ETKİLERI ÜZERİNE KAVRAMSAL BİR İNCELEME
Authors: ZENGİN Mehmet
Published: May 2023

Ortak bir hedefi gerçekleştirmek üzere kurulan işletmelerin devamlılığının sağlanması şüphesiz ki yalnızca işletme paydaşları açısından değil, gerçekleştirilen faaliyetlerin ülke ekonomisine olan katkıları nedeniyle de büyük bir öneme sahiptir. Mikro ve makro düzeyde değerlendirilmesi gereken ekonomik faaliyetlerin işletme özelinde incelenerek, yönetsel fonksiyonların başarıyla uygulanıp uygulanmadığının tespiti ve işletmenin yol haritası olarak uzun bir dönemi kapsayan stratejik yaklaşımın öngörülerinin belirli periyotlarla değerlendirilmesi; tepe yönetiminin sürdürülebilir politikalara olan bakışını göstermesi açısından da özel bir ehemmiyet taşımaktadır. Hemen her alanda sınırların ortadan kalktığı günümüz küresel dünyasında işletmelerin yeniliklere ayak uydurması, iç ve dış çevre ile olan etkileşimini başarıyla yönetmesi, verimlilik artışını sağlayarak koruması, kendini sürekli yenilemesi, tehditleri görmesi, fırsatları değerlendirmesi ve ortak paydada geleceğini şekillendirmesi; elbette işletmenin benimsediği yönetim yaklaşımıyla yakından ilgilidir. Bu çalışmada çağdaş yönetim yaklaşımlarından stratejik yönetimin, işletmelerin geleceğinde oynadığı role dair kavramsal bir bakış ortaya konmuştur.
GIDA TAKVİYESİ SATIN ALMA SÜRECİNİ ETKİLEYEN UNSURLAR, DİJİTAL ETKİLEYİCLERİN ÖNEMİ VE TÜKETİCİ SATIN ALMA MODELLERİ
Authors: ÖZTAN KURU Hülya , YILDIRIM Figen
Published: May 2023

Gıda takviyesi ürünlerinin önemi tüketiciler, sağlık personelleri, satış ve pazarlamacılar açısından gün geçtikçe yükselmektedir. Geçtiğimiz senelerde yaşanan pandemi süreci de bu durumu hızlandırmıştır. Gıda takviyesi ürünleri pazarı bu kadar hızla genişleyip büyürken, bu ürünlerin bilim insanları ve tüketiciler yönünden yararlı veya zararlı olduğu konusunda tartışmalar da devam etmektedir. Bununla birlikte tüketicilerin değişkenlik gösteren istek ve ihtiyaçları ile ürünlere yönelmeleri, pazarlamacılar açısından zorlayıcı durumlar olarak ortaya çıkmaktadır. Bundan dolayı tüketicilerin gıda takviyesi ürünlerini satın alma eğilimlerinin tespit edilmesi önemli bir süreç olarak karşımıza çıkmaktadır. Bu konu ile ilgili olarak; yerinde sonuçlar ortaya koymak için; gıda takviyesi satın alma sürecini etkileyen unsurlar,bu süreçte dijital etkileyicilerin önemi ve tüketici satın alma modelleri üzerine bir araştırma ve çalışma yapılmıştır. Burada ilk olarak; tüketicilerin gıda takviyesi ürünlerini satın alma eğilimlerini anlamak üzere geliştirilmiş bir anket ile durum tesbiti yapmak amaçlanmıştır. Bu kapsamda yapılan değerli bir çalışma olması sebebi ile tüm ilgilenen paydaşlara önemli katkı sağlayacağı düşünülmektedir. Aynı zamanda araştırma bulgularının gıda takviyesi pazarlamacılarına ve tüketicilere uygulayacakları stratejilerde yol gösterici olması da hedeflenmektedir.
THE INTERTWINED CASE OF AUTHENTICITY AND SOCIAL ENTREPRENEURIAL INTENTION FORMATION
Authors: ASARKAYA Çiğdem
Published: May 2023

ABSTRACT

Founders of social enterprises become the initiators of their institutions by prioritizing their missions, and dedicating their efforts and time. Their goals become real as a result of hard work of a group of people, who unite around their missions. Based on the literature of authenticity and authentic leadership (AL), and social entrepreneurial intention formation; it was realized that there is a high degree of intersection between some of the authenticity concepts and the previously proposed antecedents of social entrepreneurial intention. The purpose of this paper is to conceptually merge the relevant dimensions of AL with a previously suggested social entrepreneurial intention (SEI) model. The strength of SEs is often based on their values, resilience, and personal experiences of solving problems. Based on the Constructivist Self Development Theory, it is suggested in this paper that a reason why these people do their best to solve others’ – often similar- problems, may be their increased levels of authenticity throughout their challenging life experiences.
Avaliação das condições de uso da estação central do Metrô-DF: uma abordagem antropotecnológica
Authors: Rodrigues Evaldo César Cavalcante , Silveira Júnior Aldery , Rodrigues Martha Maria Veras Oliveira Cavalcante , Da Silva Roberto Bernardo
Published: May 2023

Nesse artigo tem-se uma análise da usabilidade da estação central do metrô do Distrito Federal. Utilizou-se a abordagem antropotecnológica, um brainstorming com especialistas do Metrô-DF e uma mescla de critérios de usabilidades encontrados na literatura para definir as variáveis estudadas, a saber: elementos demográficos; flexibilidade de uso do equipamento; aprendizagem; eficiência e facilidade de uso; autonomia; e, afinidades sociais. Os principais dados obtidos foram: o perfil demográfico dos usuários-clientes da estação pesquisada, e informações relativas às variáveis citadas. Os itens “pontos de eficiência” e “autonomia na usabilidade” figuraram os piores resultados da pesquisa. Teve-se ainda uma informação inusitada, referente a uma baixa compatibilidade dos respondentes com os funcionários da referida estação. Pôde-se concluir que a usabilidade de tal estação é satisfatória e que a abordagem antropotecnológica se mostrou eficaz e de grande utilidade para análises relativas à usabilidade de um sistema público de transporte.
APPLICATION OF BASIC AND MODIFIED METHOD FOR ASSESSING THE LAND DEGRADATION NEUTRALITY IN THE CONTEXT OF STUDYING THE RELATIONSHIP BETWEEN DEGRADATION AND AGRICULTURAL PRODUCTION
Authors: TSVETNOV E. V. , MARAKHOVA N. A.
Published: May 2023

The article is devoted to the theory and practice of applying the concept of land degradation neutrality (LDN) for the conditions of the Belgorod region of the Russian Federation. Its basic version is considered, based on the analysis of three sub-indicators, where the assessment of land degradation trends in the study area is based on the analysis of changes in the main indicator - the percentage of degraded land from the total area of the territory, and three sub-indicators of SDG 15.3.1: changes in land productivity, changes in land cover and dynamics of soil organic carbon reserves. As an adjustment to the basic approach of the LDN, it is proposed to supplement it with regional data on soil characteristics. The following soil properties can be recommended as necessary for considering in the evaluation model - the content of humus and nutrients, as well as pH, these characteristics, on the one hand, are largely related to soil fertility, and on the other hand, they are most at risk of degradation changes during human exploitation of soils. Modif cation of the LDN methodology allows not only to clarify the central (umbrella) indicator, but also to identify the relationship of the latter with indicators of agricultural production, in particular, gross crop yields. Analysis of the data using the modif ed LDN method showed that 64.8% of the region was degraded (which is almost 2 times higher than the values obtained by the basic LDN method), which leads to a signif cant loss of crop yield. The article proposes an algorithm for assessing the relationship between land degradation and gross crop yields based on correlation and regression analysis (spatial models).
ASSESSMENT OF DAMAGE FROM SOIL AND LAND DEGRADATION AT THREE HIERARCHICAL LEVELS OF THE ADMINISTRATIVE AND ECONOMIC STRUCTURE OF THE RUSSIAN FEDERATION: SUBJECTS, MUNICIPALITIES AND AGRICULTURAL FARMS
Authors: MAKAROV O. A. , ABDULKHANOVA D. R. , KARPOVA D. V. , KRASILNIKOVA V. S. , MARAKHOVA N. A. , KRYUCHKOV N. R. , CHEKIN M. R. , BELYAEVA M. V. , BALDJIEV A. S.
Published: May 2023

The damage caused by soil and land degradation was assessed at three hierarchical levels (the region as a whole, the municipality, the agricultural sector) of the spatial organization of six test regions of the Russian Federation (Volgograd, Belgorod, Kaliningrad, Vladimir, Samara and Penza regions). The indicators of soil and land degradation for all test objects were a decrease in the content of exchangeable potassium, a decrease in the content of mobile phosphorus, a decrease in the content of humus, a change in the acidity index of soils. In addition, for the test objects of the Volgograd region, the indicator of land salinization was used, the Belgorod region - soil erosion, the Kaliningrad region - the indicator of the metabolic coef cient (qCO2) of soils. It was found that the minimum and maximum values of the specif c total damage from degradation can be detected for regions with a similar composition of soil cover (Saratov and Belgorod regions, respectively, where chernozem soils predominate). When the values of specif c total damage from soil and land degradation are close to each other at various hierarchical levels of spatial organization of regions (Vladimir, Saratov, Belgorod and partly Penza regions), in terms of intensity and scale of manifestation of the studied degradation processes, the agricultural farm is «typical» for the entire municipal district, and the municipal district is «typical» for the entire region.
THE CHOICE OF INDICATORS FOR THE ECOLOGICAL RATIONING OF PETROLEUM PRODUCTS IN CHESTNUT SOILS
Authors: KOVALEVA E. I. , TROFIMOV S. YA. , SHOBA S. A.
Published: May 2023

The response of the microbial community of soils to dif erent levels of oil contamination in a model experiment was studied according to indicators: basal respiration (BR), basal induced respiration (SIR), carbon of microbial biomass (Cmic), potential denitrif cation (DNF), methanogenesis, catalase activity. The soils are represented by light chestnut (Haplic Kastanozems Sodic) and meadow-chestnut (Gleyic Kastanozems Chromic) drysteppe zone of the Stavropol area, dif ering in the organic matter content, salinity and the content of physical clay. The intensity of BR increased af er 30 days of the crude oil input into the soils and caused the growth of Cmic due to the activation of oil-oxidizing microorganisms in anaerobic zones of soils. DNF varied in light chestnut and meadow-chestnut soils not directly, that was probably due to the level of organic matter content in soils and their salinity. Catalase activity was a sensitive indicator for the petroleum hydrocarbons in light chestnut soil, but salinity was the determining factor in its activity in meadow chestnut soil. Biotesting with the use of worms Eisenia fetidashowed the inability of test organisms to survive in non-contaminated chestnut soils. A significant indicator that did not depend on natural factors in chestnut soils was BR and related indicators. Catalase activity and DNF have limitations on the salinity factor.
INTERACTION OF COPPER CLUSTERS WITH CHOLESTEROL AND THIO-CHOLESTEROL. NON-EMPIRICAL STUDY
Authors: ERMILOV ALEKSANDER YU. , GROMOVA YANA A. , SHABATINA TATIANA I.
Published: May 2023

The structural geometries of small copper clusters (Cu2, Cu3, Cu13) and of their complexes with Cholesterol (Ch) and Thio-Cholesterol (TCh) ligands were studied by DFT/ B3LYP5-method. General trends in evolution of complexes geometries and interaction energies of copper clusters of different nuclearity with Cholesterol (Thio-Cholesterol) ligands upon the copper cluster size (number of copper atoms). It was shown the signi cant deviations in the structures of copper clusters’ complexes with cholesteric ligands in comparison to the silver-containing complexes studied previously. Thus, in Ch-Cu13 complex structure icosahedral fragment is signi cantly elongated in 3-order axis direction. The biligand complex of icosahedral copper cluster (TCh)2Cu13 possessed the highest energy stability.
ON A POSSIBLE REASON FOR THE PREDOMINATION OF VANADIUM IN THE MICROELEMENT COMPOSITION OF SULFUROUS OILS
Authors: LISICHKIN GEORGY V.
Published: May 2023

In accordance with the abiogenic hypothesis of the origin of oil, deposits formed as a result of degassing of the Earth, in particular, due to the interaction of mantle methane and its polycondensation products with elemental sulfur, are thermodynamically open systems. In open systems, self-organization processes are realized and a progressive evolution of the catalyst of the basic reaction occurs, accompanied by an increase in its activity and accumulation in the system. The predominance of vanadium in the trace element composition of sour oils may be due to its catalytic activity in the basic reaction of the formation of C-S bonds.
Strategi Pengembangan Daya Saing Ekonomi Digital: Penguatan Inovasi Industri Manufaktur Berbasis Teknologi Digital
Authors: Erla Mychelisda  , Muhammad Soekarni  , Agus Eko Nugroho  , Bahtiar Rifai  , Pihri Buhaerah  , Nika Pranata  , Muhammad Zulhamdani  , Rio Novandra  , R.R. Retno Rizki Dini Yuliana
Published: May 2023

Substansi dari naskah kerja ini esensinya untuk menjawab pertanyaan pokok: bagaimana tingkat kesiapan IMK dalam mengadopsi teknologi maju berbasis digital adalam rangka memperkuat produktivitas dan daya saingnya ke depan? Kesiapan ini ditinjau dari kapasitas IMK dari satu sisi, dan dukungan Pemda terhadap IMK pada sisi lain, dalam mengadopsi teknologi yang lebih maju. Hasil penelitian Tim Ekonomi Digital PRE-BRIN menemukan lima permasalahan utama yang dihadapi IMK dalam mengadopsi teknologi maju yaitu: (1) Rendahnya pemahaman IMK terhadap teknologi digital; (2) Keterbatasan jenis mesin dan peralatan produksi IMK; (3) Keterbatasan SDM IMK dalam mengadopsi teknologi digital; (4) Kesulitan IMK dalam aspek pembiayaan; (5) Rendahnya kualitas jaringan dan kemampuan IMK dalam menggunakan internet. Sementara itu, penelitian tersebut juga menemukan masih lemahnya dukungan Pemda kepada IMK dalam upaya meningkatkan produktivitas dan daya saingnya melalui penguatan teknologi.
Berdasarkan pemetaan kendala di atas, bagian akhir working paper ini merumuskan empat rekomendasi kebijakan yang penting untuk dilakukan. Pertama, perluasan program literasi digital bagi IMK. Kedua, program penguatan adopsi IMK terhadap teknologi berbasis digital. Ketiga, program pengembangan koperasi berbasis klaster sebagai hub (penyambung) pengembangan kapasitas usaha IMK. Keempat, dukungan kebijakan penguatan ekosistem penguatan teknologi berbasis kolaborasi.
Analisis Keselamatan PLTN Berbasis Probabilitas Fuzzy
Authors: Julwan Hendry Purba
Published: May 2023

Teknologi PLTN dan teknologi sistem keselamatannya senantiasa berkembang seiring dengan perkembangan ilmu pengetahuan dan teknologi. Meskipun keandalan sistem keselamatan PLTN semakin baik, menihilkan kecelakaan dan risiko tetap tidak mungkin. Oleh karena itu, yang menjadi fokus peningkatan keandalan sistem keselamatan PLTN adalah memperkecil probabilitas kecelakaan dan menurunkan konsekuensi kecelakaan hingga tingkat risiko yang dapat diterima.
Untuk dapat memperkirakan besarnya peluang terjadinya kecelakaan dan tingkat risiko dari pengoperasian PLTN maka perlu dilakukan analisis keselamatan probabilistik. Analisis keselamatan probabilistik konvensional memerlukan ketersediaan data kegagalan komponen. Tentunya PLTN yang masih dalam tahap disain atau yang belum pernah beroperasi tidak akan memiliki data kegagalan yang diperlukan. Kondisi ini menyebabkan penggunaan data generik menjadi tak terhindarkan. Hasil analisis dengan menggunakan data generik ini tentu saja tidak akan menggambarkan kondisi nyata dari sistem yang sedang dievaluasi, sehingga kurang tepat dijadikan sebagai bahan pertimbangan untuk meningkatkan keandalan sistem keselamatan.
Oleh karena itu dikembangkanlah metode analisis keselamatan PLTN berbasis probabilitas fuzzy untuk mengevaluasi kinerja sistem keselamatan PLTN ketika data kegagalan komponen tidak tersedia. Metode baru ini memanfaatkan keilmuan, pengetahuan dan pengalaman yang dimiliki oleh pakar yang terlibat dalam mendisain dan mengembangkan reaktor tersebut. Metode analisis keselamatan probabilistik berbasis probabilitas fuzzy ini memiliki tiga fitur analisis yaitu analisis pohon kegagalan berbasis probabilitas fuzzy, analisis kritikalitas berbasis probabilitas fuzzy, dan analisis pohon kejadian berbasis probabilitas fuzzy. Untuk memudahkan pengguna, metode yang dikembangkan ini juga dilengkapi dengan perangkat lunak Intelligent Probabilistic Safety Assessment (IntelPSA).
Metode analisis ini tentu saja akan memberikan kontribusi saintifik pada pengembangan teknologi keselamatan PLTN. Kontribusi saintifik yang pertama adalah FPPSA dapat menjadi komplemen untuk analisis keselamatan probabilistik konvensional ketika PLTN yang akan dievaluasi tidak memiliki data kegagalan komponen. Kontribusi saintifik yang kedua adalah konsep berpikir yang ditanamkan pada metode baru ini dapat menjadi acuan bagi para peneliti dalam mengembangkan metode analisis baru dengan penggunaan data kualitatif melalui justifikasi pakar berdasarkan keilmuan, pengetahuan dan pengalaman yang dimiliki ketika data kuantitatif tidak tersedia. Untuk aplikasi praktis, para pembuat kebijakan terkait dengan pembangunan dan pengoperasian PLTN pertama di Indonesia dapat mempertimbangkan untuk menggunakan perangkat lunak IntelPSA sebagai alat bantu untuk mengevaluasi keandalan sistem keselamatan PLTN yang dipilih sehingga pakar yang memahami teknologi dan sistem kerja dari reaktor nuklir yang akan dibangun dapat melakukan justifikasi secara kualitatif.
Evaluation of Complex Rehabilitation in Post-COVID-19 Patients a Preliminary Report
Authors: Onik Grzegorz , Patrzyk Aleksandra , Biedal Maria , Sieroń Karolina
Published: May 2023

Introduction: COVID-19 results in numerous complications, mainly cardiac and pulmonary ones. Post-treatment physiotherapy is crucial in patients with its moderate and critical infection course.Study aim: Assessment of the results regarding complex rehabilitation in post-COVD patients.Material and methods: The study group constituted 15 participants (9 males and 6 females) who recovered from COVID-19. Their mean age was 52.75 years 8.13 years. All participants attended complex rehabilitation programmes, including: cycle ergometer training, respiratory and coughing exercises 3 times per week. The 6-Minute Walk Test was used to assess the pre- and post-treatment status of participants. The Modified Medical Research Council dyspnoea scale was applied to determine the dyspnoea-mediated disability before and after the treatment.Results: The 6-minute walking distance did not rise significantly in males or females. No significant changes were noted for blood pressure, heart rate or saturation between measurements. Dyspnoea-mediated disability level decreased in males (1.66 1.12 points vs. 0.11 0.33 points; p = 0.001).Conclusions: Complex physiotherapy in post-COVID-19 males improves dyspnoea-mediated disability. In males and females who recovered from COVID-19, complex physiotherapy leads to an increase in physical capacity as well normalisation of blood pressure, heart rate and oxygen saturation.
AUDITORIA DE ENFERMAGEM: ANÁLISE DAS GLOSAS HOSPITALARES RELACIONADAS À EQUIPE ASSISTENCIAL
Authors: De Morais Ramon Carlos Pedroso , da Costa Diovane Ghignatti , Magalhães Aline Lima Pestana , Lanzoni Gabriela Marcellino de Melo , Espindola Dalton Henrique Cordeiro , Martins Fernanda da Silva
Published: May 2023

Objetivo: Analisar as glosas hospitalares relacionadas à equipe assistencial. Método: Pesquisa quantitativa, documental, descritiva, transversal, realizada em hospital privado da região sul do país, em 2019, com base no relatório institucional de glosas. Procedeu-se à estatística descritiva. Resultados: Dos 45.364 itens glosados, 78% referiram-se à equipe de enfermagem, 1% à fisioterapia e 21% à equipe médica. Os setores destacados foram Internação (45%), Centro Cirúrgico (24%) e Unidade de Terapia Intensiva Adulto (16%). O grupo de medicamentos representou 55,8% dos itens. O resultado financeiro indicou a soma de R$331.245,00 no total de glosas, sendo 49% relacionadas à enfermagem. Conclusão: O potencial da auditoria para rastrear inconsistências relacionadas aos registros dos serviços assistenciais, indicou áreas e equipes que demandam melhorias dos registros, as quais podem subsidiar a diminuição das glosas hospitalares e, sobretudo, impactar na sustentabilidade financeira e segurança dos processos assistenciais.
ADHERENCE REDUCTION OF PSEUDOMONAS AERUGINOSA UFPEDA 416 UNDER BLUE LED LIGHT IRRADIATION AND CURCUMIN EXPOSURE
Authors: Da Silva Eduardo Cândido , Gomes Victor Targino , Pragana Luiz Gustavo , Bandeira João Antônio Carvalho , Dos Santos Lucas Ferreira Alves , Travassos Rafael de Almeida , Vasconcelos Ulrich
Published: May 2023

This study assessed the adhesion of Pseudomonas aeruginosa UFPEDA 416 (ATCC 27853) exposed to curcumin-mediated Photodynamic Antimicrobial Chemotherapy (PACT). Initially, the Minimum Inhibitory Concentration of curcumin was determined (0.63 μg/mL). After, P. aeruginosa UFPEDA 416 was exposed to the MIC solution of curcumin and then irradiated with a high-power blue LED light at 480 nm for 20, 40, 60 and 120 minutes (28.03 mW/cm2). At each interval, 100 µL aliquots were transferred to microtubes containing Müeller-Hinton broth and incubated at 30ºC for 24 h. The biofilm formed was quantified by the crystal violet method. The adherence rate was calculated using the difference in the absorbance of the treatment, compared to the control. There was a reduction in adhesion capacity from 40.8% in the first 20 minutes to approximately 11% after 60 minutes. The reduction in the adhesion rate accompanied the decrease in planktonic cells, determined from the measurement of the absorbance of the supernatant at 620 nm. The results indicated action by bacteriostasis.
DETERMINAÇÃO DO NÍVEL DE SERVIÇO DA RODOVIA FEDERAL BR-415 PELA METODOLOGIA HCM 2000
Authors: Teixeira Niel Nascimento , Menezes Leonardo Santos , Vieira João Ribeiro Santana , de Jesus Diana Santos , Coutinho Elaine Silva
Published: May 2023

O aumento progressivo do número de veículos, assim como a respectiva degradação das rodovias, leva a deterioração das condições de circulação rodoviária, diminuindo o conforto dos usuários e aumentando a probabilidade de ocorrer acidentes. O objetivo deste artigo é determinar o nível de serviço do trecho Itabuna-Ilhéus da BR-415, conhecida como rodovia Jorge Amado, e verificar a necessidade de intervenção. Em virtude do porte das duas cidades e da presença da Universidade Estadual de Santa Cruz e outros empreendimentos, a rodovia apresenta movimento intenso, servindo como rota de tráfego diário, sendo uma rodovia de função arterial. Foi realizada uma contagem de tráfego durante três dias, em um período de doze horas em cada dia, e para todos os casos, foi definido que a rodovia opera no nível de serviço E, que é o representativo da capacidade. Sendo assim, a intervenção é necessária, sendo recomendado a duplicação da rodovia.
Recurrent Neural Networks for Artifact Correction in HRV Data During Physical Exercise
Authors: Svane Jakob , Wiktorski Tomasz , Ørn Stein , Eftestøl Trygve Christian
Published: May 2023

In this paper, we propose the use of recurrent neural networks (RNNs) for artifact correction and analysis of heart rate variability (HRV) data. HRV can be a valuable metric for determining the function of the heart and the autonomic nervous system. When measured during exercise, motion artifacts present a significant challenge. Several methods for artifact correction have previously been proposed, none of them applying machine learning, and each presenting some limitations regarding an accurate representation of HRV metrics. RNNs offer the ability to capture patterns that might otherwise not be detected, yielding predictions where no prior physiological assumptions are needed.

A hyperparameter search has been carried out to determine the best network configuration and the most important hyperparameters. The approach was tested on two extensive multi-subject data sets, one from a recreational bicycle race and the other from a laboratory experiment. The results demonstrate that RNNs outperform by order of magnitude existing methods with respect to the calculation of derived HRV metrics. However, they are not able to accurately fill in individual missing RR intervals in sequence. Future research should pursue improvements in the prediction of RR interval lengths and reduction in necessary training data.
Our MapAI approach: focusing on data pipeline and loss functions
Authors: Sørensen Tord Kriznik , Vermeer Martijn , Hay Jacob Alexander , Fantin Daniele , Völgyes David
Published: May 2023

Precision building detection is a difficult challenge because resolution, lighting conditions, and image quality greatly influence the performance of machine learning models. Additionally, the building types, settlement structure, road structure, soil color and texture, vegetation, and car types can also affect image segmentation, making the solutions local or regional. In this paper, we describe the solution for the MapAI challenge submitted by the ATELIER team. We focused on two primary parts: data processing and loss functions. Our main insights were that the data can be effectively resampled by exploiting its structure and that the boundary intersection over union metric is very forgiving, not giving the network enough incentive to refine the borders. The segmentation was performed with a standard 5-level deep U-Net with an additional conditional random fields (CRF) denoiser.
Uso do tucumã (Astrocaryum aculeatumMeyer) em cosmético: caracterização química e elaboração de sabonetes artesanais
Authors: Oliveira Edriely Vilena , Laranjeira Ruandra Kaienne da Silva , Yamaguchi Klenicy Kazumy de Lima
Published: May 2023

A Amazônia apresenta inúmeras frutas nativas com potencial econômico, tecnológico, nutricional e de sabores e aromas inigualáveis, dentre eles o tucumã. O objetivo deste artigo foi determinar as características química das cascas e cascas do tucumã e elaborar um sabonete artesanal utilizando essa matéria prima. Foi realizado a prospecção fitoquímica clássica e a determinação do perfil químico por cromatografia em camada delgada associado a análise da capacidade antioxidante e elaboração de sabonetes artesanais. A partir do produto, foram realizados testes físico-químicos e análise sensorial. Detectou-se a presença de substâncias fenólicas e catequina e capacidade antioxidante no extrato das cascas e polpa. Na análise físico-química, os sabonetes apresentaram cremosidade, emoliencia e uma boa aceitação dos provadores. Este estudo abre a perspectiva de agregar valor a casca de tucumã e do uso integral para utilização industrial e de forma sustentável do fruto.
Doenças parasitárias helmínticas e suas relações zoonóticas com os seres humanos durante o Quaternário: uma revisão
Authors: Batista Maia de Oliveira Sabrina Aparecida , Liparini Alexandre , Pereira Cintia Aparecida de Jesus , Carvalho Olivia Alexandre de , Lima Walter dos Santos
Published: May 2023

As zoonoses provenientes de helmintos parasitos estão presentes na população desde os tempos antigos. Para entender melhor esta relação, foram revisados trabalhos publicados entre os anos de 2009 a 2020 que tratavam sobre zoonoses, helmintos parasitos intestinais, coprólitos e paleoparasitologia. A seleção do material abrangeu tanto trabalhos que utilizaram coprólitos de origem animal quanto de origem humana, respeitando o contexto zoonótico. Buscou-se encontrar as espécies de helmintos parasitas zoonóticos e as causas pelas quais estas zoonoses se estabeleceram na população, sendo uma das principais a domesticação de animais. Os achados foram divididos por continentes, e um resumo foi apresentado em forma de tabela, que mostra os helmintos parasitas, as datações e as suas localizações geográficas. O grupo de helmintos parasitos que mais apareceu nesta revisão foi o dos capilarídeos. Espera-se que este trabalho estimule e incentive estudantes e pesquisadores a se interessarem pelo tema e destaque a importância que as doenças helmínticas tiveram no passado e continuam a apresentar no mundo atual.
Some comments on radiobiological models and the consistent Taylor series model.
Authors: Alvarez Gustavo Benitez , Lobão Diomar Cesar
Published: May 2023

Here it is mathematically shown that the Linear Quadratic model is insuffcient to adequately describe the survival curve of some cell lines, and that the β parameter of this model is dependent on the dose range used for curve fitting. Therefore, higher-order polynomials are needed to have a single formula that describes the survival of all cell lines at all dose ranges. Based on the Taylor series and two mathematical hypotheses, it is possible to show that the free parameters are dependent on each other. A new approach is proposed to eliminate this interdependence between the free parameters of the Taylor series expansion. The available experimental data on survival curves indicate that there are at least three different behaviors. The theoretical analysis is tested for these three different behaviors, including also five known models not based on Taylor series. Based on experimental cell survival data it is possible to generate charts on the isoeffective total dose in fractionation. A comparative study on the performance of each model in different fractionation schemes is carried out. Experimental data show that fractionation in the low and medium dose ranges can present a non-monotonic behavior, and that most models not based on the Taylor series are unable to reproduce this behavior. Furthermore, to reproduce this nonmonotonic behavior it is necessary to use polynomials of order greater than five. Finally, it is shown that for some cell lines, hyperfractionation presents a considerable therapeutic gain when compared to conventional fractionation, since there are cases in which the isoeffective total dose in hyperfractionation is much lower than the total dose in conventional fractionation.
Contents
Authors: Da Cunha Fernando Antônio Portela
Published: May 2023

Contenst Vol. 7n1
ԿԱՏԱՐԱԿՏԻ ՈՒԼՏՐԱՁԱՅՆԱՅԻՆ ՖԱԿՈԷՄՈՒԼՍԻՖԻԿԱՑԻԱՅԻ ԱՐԴՅՈՒՆԱՎԵՏՈՒԹՅԱՆ ԽՆԴԻՐՆԵՐԻ ՎԵՐԱԲԵՐՅԱԼ
Authors: Նանյան Վ.Ա. , Գալստյան Ս.Գ. , Ավագյան Տ.Գ.
Published: May 2023

Cataract is a common disease, which occupies a leading position in the world among the causes of blindness. The interaction of many factors plays a role in the pathogenesis of cataract.
Treatment of cataracts is only surgical. Ultrasonic phacoemulsification is the leading method for restoring vision in cataracts. It is recognized worldwide as the most effective and safest method for restoring vision in cataracts.
The way of ultrasonic phacoemulsification is widespread all over the world - up to 95% of cases of cataract surgeries in Russia, Western Europe, and the United States are carried out using this technique.
One of the main tendencies in modern cataract phacoemulsification is an increase in the efficiency of the use of ultrasonic energy.
Further development of the cataract treatment technique is the search of ways to reduce surgical trauma and the invasiveness of intervention on the lens, which is due to the fact that ultrasonic destruction of the lens is combined with a negative effect, in particular, on the endothelium or posterior epithelium of the cornea, which can seriously affect the outcome of the operation itself.
The high density of the lens nucleus with a combination of low density of corneal endothelial cells substantially complicates the task of the surgeon.
During life, the density of endothelial cells decreases. Even non-complicated operations for cataracts lead to their loss up to 12-20%. Recovery of endothelial cells occurs due to their migration and hypertrophy.
Based on the foregoing, there is a need to develop a criterion that can be used to predict the effectiveness of ultrasonic phacoemulsification in terms of the preservation of corneal endothelial cells. The morphofunctional state of the endothelial cells of the cornea and the cornea itself can become such criterion: the area and thickness of the cornea, the number of endothelial cells and their ratio. We are convinced that it is the morphofunctional state of the endothelial cells of the cornea and the cornea itself that should become the basis for an accurate estimate of the ultrasound energy.