bluuebunny/crossref_metadata_2025 huggingface dataset:
STATUS CATEGÓRICO E SEUS MECANISMOS RELACIONAIS DE ORDENAÇÃO DOS MERCADOS
Authors: Weber Tiziana Brenner Beauchamp , Godri Luciana , Maciel Cristiano de Oliveira
Published: July 2023

RESUMO Sistemas de status trazem ordem social aos mercados, mas eles são arranjos não meritocráticos que, em essência, privilegiam positivamente aqueles de mais alto status e penalizam desproporcionalmente aqueles de status inferior. Paradoxalmente, esses sistemas são mantidos não apenas por seus maiores beneficiados, mas também por aqueles que mais sofrem com suas desigualdades. A literatura tende a explicar a persistência desses sistemas por mecanismos macro ou micro orientados. Propomos uma via alternativa e complementar ao investigar os mecanismos relacionais que possam explicar a persistência desse paradoxo nas ordens de status. Tendo como objeto a hierarquia de status categórico de restaurantes em um mercado de alta gastronomia, empregamos a Perspectiva da Análise de Redes Sociais para identificar mecanismos relacionais (via modelagem em bloco) que atuam na manutenção desse sistema coletivo de produção de desigualdades. Os resultados da modelagem em bloco na rede de atribuição de deferências entre os produtores desse mercado revelaram uma estrutura de três papéis de deferência/apreciação simbólica (difusa, seletiva e egocentrada). Como conclusão, destacamos a ordem social como uma contínua tensão entre normalidade e caos nas relações entre papéis e o aspecto processual da estruturação de papéis dos mercados, o qual denominamos autorização da representação da categoria de mercado.
PROGRAMAS DE DIVERSIDADE E INCLUSÃO Em MULTINACIONAIS: OPORTUNIDADE PARA TRANSFERÊNCIA REVERSA DE CONHECIMENTO
Authors: Fonseca Luíza da , Kogut Clarice Secches
Published: July 2023

RESUMO O presente artigo tem por objetivo compreender como as empresas multinacionais gerenciam seus programas de diversidade e inclusão globalmente, identificando suas estratégias gerais, práticas de transferência, motivação das subsidiárias para internalizar essas práticas, e tratando de um assunto pouco abordado na literatura de diversidade e inclusão até o momento: a transferência reversa de conhecimento. Mediante um estudo exploratório de caso múltiplo, o estudo contribui ao integrar e avançar nas literaturas sobre diversidade e inclusão, negócios internacionais e de transferência reversa de conhecimento, o que, até onde sabemos, é um tópico inédito. O estudo destaca a importância da estratégia escolhida pelas matrizes, o contexto das subsidiárias, e o tamanho e poder das subsidiarias dentro das organizações, identifica os principais promotores de programas globais de diversidade e inclusão e condições para a transferência reversa de conhecimento, oferecendo, por fim, um quadro resumindo os conceitos trabalhados.
Non-destructive tests for performance evaluation of self-healing concrete by addition of methyl methacrylate-containing microcapsules
Authors: Valerio Daniel , Fernandes Juliana Ferreira , Futai Marcos Massao , Figueiredo Antonio Domingues de , Aoki Idalina Vieira
Published: July 2023

Abstract The objective of this work was to develop a chemical admixture to make concrete capable to heal its fissures autonomously and, consequently, mitigate the concrete’s reinforcement corrosion due to the ingress of aggressive agents. For that, polymeric microcapsules built by a shell of urea-formaldehyde-melamine (UFM) and a core of methylmethacrylate were developed and added to the concrete to further evaluation. The concrete specimens containing 0%, 3% and 6% of the proposed microcapsules (mass of microcapsules / mass of cement) were subjected to destructive and non-destructive tests. The water absorption and the mechanical tests i.e., compressive strength and indirect tensile strength (Brazilian test) were carried out to characterize concrete, while the electrochemical impedance spectroscopy (EIS) and the non-destructive ultrasonic pulse velocity (UPV) tests were conducted to evaluate the concrete self-healing ability. These tests showed that the proposed admixture was able to heal the concrete’s fissures partially. In addition, it was concluded that the samples with 3% of microcapsules presented higher self-repairing rates. Despite the microcapsules developed in this work have presented a satisfactory self-healing efficiency, their effectiveness looks to be affected by the mixing procedure once part of them is broken during the process.
ROTATING CASSON NANOFLUID CONVECTION FOR Au, Ag, CuO, AND Al2O3 NANOPARTICLES EMBEDDED BY DARCY-BRINKMAN POROUS MEDIUM
Authors: Devi Mamta , Gupta Urvashi
Published: July 2023

The present paper investigates convection in a Casson nanofluid layer in porous medium under the influence of Coriolis force using Darcy-Brinkman model. The analysis is carried out using linear stability theory, normal mode technique, and one term Galerkin type weighted residual method for various metallic and non-metallic nanoparticles. The outcomes are compared with previously published results, and fine agreements are noted for the permissible range of parameters. Numerical simulation for porous media is carried out for blood (Casson fluid) using the software Mathematica to make the investigation helpful for practical applications. The effect of porous medium, rotation, Casson parameter, and nanoparticle parameters is discussed. Interestingly, it is found that though Casson fluids are more stable as compared to regular fluids, the Casson parameter itself has a destabilizing effect on the system. The main objective of the study is to consider the impact of Coriolis force on a Casson nanofluid layer with metallic and non-metallic nanoparticles. This effect is of paramount importance in geophysical studies, particularly in the extraction of crude oils. Further, by increasing the rotation parameter, the axial velocity of the blood-based Casson fluid increases, which may help in the treatment of stenosis of arteries and throat. The importance and novelty of the study is the fact that Coriolis force can stabilize various nanoparticle-based Casson fluid layer systems, which were otherwise unstable. As far as metallic and non-metallic nanoparticles are concerned, the stability pattern followed by metallic nanofluids is iron-blood > copper-blood > silver-blood > gold-blood, and for non-metallic nanofluids is silica-blood > alumina-blood > titanium oxide-blood > copper oxide-blood.
Procuring an innovative recycling facility in pursuit of zero waste using NEC4
Authors: Williams Stephen , Bell Nick , Trebes Barry
Published: July 2023

In 2018, Rhondda Cynon Taf County Borough Council initiated a project to find an innovative solution to segregate recyclable waste to meet the Welsh government’s zero-waste targets. The solution involved procurement of a state-of-the-art, highly automated recycling plant within an existing structure. Anticipating design and supply challenges, the collaborative NEC4 contract suite was adopted. This paper describes the benefits and flexibility of NEC4, especially when unanticipated challenges were encountered, as well as lessons learned.
Back-analysis of an embedded retaining wall in stiff clay
Authors: Foo Chuan Fong , Le Truong , Bailie Paul , Standing Jamie R.
Published: July 2023

The performance of embedded retaining walls during and after excavation is commonly predicted using numerical techniques and assessed by field monitoring. However, subsequent back-analyses of post-construction monitoring data are rarely undertaken. The purpose of this paper is two-fold: (a) to provide a comprehensive post-construction review of site information and monitoring data from a construction site in central London and (b) to detail results from a parametric study undertaken as part of the back-analyses of five key embedded retaining wall sections. The importance of accounting for the effects of non-linear soil stiffness when predicting wall deflection profiles is highlighted by the parametric study. Good agreement between the numerical model and field monitoring data was achieved through the back-analysis exercise. Differences in the predicted class C wall deflection profiles are attributed to varying temporary support systems and complex three-dimensional site geometry. Best practice recommendations relating to field monitoring and a new streamlined methodology for performing similar back-analyses are proposed.
A study of restaurant customers' continuous usage intention to use NFC payment service based on the expanded unified theory of acceptance and use of technology(UTAUT2): Comparison of gender differences
Authors:   The Tourism Sciences Society Of Korea, Kim Yun-Soo , Chong Yu-Kyeong
Published: July 2023

With the recent introduction of NFC payment systems, such as Apple Pay, interest in payment services via smartphones and contactless cards is increasing, and the market for NFC-based payment systems is expanding rapidly on a global scale. In this study, a research model was developed based on the UTAUT2 to explain the intention to continue using NFC payment services, the determinants of how actual users influence the intention to continue using NFC payment services, and the relationship between each factor was validated by dividing the entire sample by gender. In conclusion, performance expectancy, social influence, hedonic motivation, and facilitating conditions did not have a significant impact on the continuous use intention of NFC payment services among the entire group, whereas effort expectancy and habit did. In the women's group, effort expectancy was found to have a lower significance probability on continuous use intention than in the entire group, whereas in the men's group, it was not significant. On the basis of these research findings, it appears that the groundwork for the future proliferation of NFC payment services will be laid.
Mapeando saberes, expertos y espacios en la educación del movimiento. El caso del Cuarto Congreso Panamericano de Educación Física, Bogotá 1965
Authors: Scharagrodsky Pablo Ariel , Herrera-Beltrán Claudia Ximena
Published: July 2023

El siguiente artículo analiza, a partir de una historia social, política y cultural de la educación, el Cuarto Congreso Panamericano de Educación Física realizado en Colombia en 1965. Focaliza la indagación en los saberes transmitidos, las propuestas pedagógicas seleccionadas y las críticas realizadas a ciertas tradiciones disciplinares en dicho espacio académico. Asimismo, el trabajo explora quienes fueron los participantes, sus trayectorias institucionales y los modos en que fueron utilizados y habitados los espacios físicos en dicho congreso. Nuestra hipótesis sugiere que el evento académico —el primero de su tipo en Colombia— no solo se convirtió en un lugar de intercambio y circulación de saberes, propuestas pedagógicas y expertos, sino que fundamentalmente fue un terreno de legitimación de la especialidad y de validación de sus intervenciones y acciones dentro y fuera del Estado.
HÜCRE KÜLTÜRÜ ORTAMINDA KARVAKROLÜN KOBALT KLORÜR İLE İNDÜKLENEN KİMYASAL HİPOKSİDEKİ KORUYUCU ROLÜ
Authors: ÖZ Ahmi
Published: July 2023

Amaç
Hipoksi nöronal hasar açısından en önemli faktörlerden
biridir. Nöronlarda eksprese edilen TRPM7 katyon
kanallarının hipoksi ve hücresel pH değişimleri
dahil birçok faktörle aktive olduğu bilinmektedir. Bu
nedenle bu araştırmada deneysel çalışmalarda hipoksi
modeli oluşturmak için sıklıkla kullanılan kobalt
klorür (CoCl2) ile indüklenen in vitro hipoksi modelinde
TRPM7 katyon kanallarının güçlü blokörü karvakrolün
hücresel sağkalım ve ölüm parametreleri üzerine etkisinin
araştırılması amaçlanmıştır.
Gereç ve Yöntem
SH-SY5Y hücreleri kültür flasklarında çoğaltıldı. Hücrelere
hipoksi uygulaması için 200 μM CoCl2 içeren
medyum ile 24 saat inkübasyon yapıldı. Karvakrolün
etkisinin sınandığı grupta ise hücreler TRPM7 kanal
inhibisyonunu sağlamak üzere 1 saat karvakrol (250
μM) içeren medyum ile inkübe edildikten sonra hipoksi
uygulanarak inkübasyon tamamlandı. Ardından kültür
kaplarından kaldırılan hücreler, apoptoz testi, MTT
hücre canlılığı analizi, reaktif oksijen türleri (ROT)
üretimi tayini, mitokondriyal membran depolarizasyonu
(MMD) tayini ve kaspaz 3, 8 ve 9 enzim aktiviteleri
tayini yapıldı.
Bulgular
Kontrole kıyasla hipoksi uygulaması yapılan grupta
hücre canlılığı azalırken canlılığın azaldığını gösteren
diğer parametrelerde (apoptoz, ROT üretimi, MMD
ve kaspaz aktivitelerinde) artış olduğu belirlendi. Karvakrol
ön inkübasyonu sonrasında CoCl2 ile hipoksi
uygulanan grupta ise hücresel canlılığın düştüğünü
gösteren parametrelerin yalnız CoCl2 uygulanan gruba
kıyasla anlamlı ölçüde azaldığı gözlemlendi.
Sonuç
Karvakrol uygulaması ile hipoksik koşulların ortaya çıkardığı
anormal hücresel hasar durumu ve hücresel
ölüm mekanizmaları yavaşlatılabilmektedir. TRPM7
katyon kanal ekspresyonu iyi bilinen SH-SY5Y hücrelerinde
karvakrolün olumlu etkilerinin daha çok
TRPM7 kanalları aracılı gerçekleştiği düşünülmektedir.
Kleefstra syndrome and sleep disorders: An Italian case report
Authors: Ettore Caterino
Published: July 2023

Kleefstra Syndrome (KS)is a rare genetic syndrome affecting approximately 1 in 200,000 individuals and is caused by either a deletion of the subtelomeric region of chromosome 9q (50%) or by a loss of function mutation in the Euchromatin Histone Methyl Transferase 1 (EHMT1) gene (50%). In this case report we analyze the case of an 8-year-old boy affected by KS from the parent’s point of view. The focus of the report is the detailed narrative analysis of the parent’s experience written directly by the mother and the complex intervention to reduce a severe sleep disturbance associated with the syndrome. A clinical assessment was carried out, focused on understanding the extent and frequency of the awakenings with a specific assessment questionnaire. The association of therapy with melatonine and trazodone was highly decisive and improved the well-being of the child and the family. The Author is carrying out further studies for the drafting of guidelines for sleep disorders in KS.
Bioinformatic workflow for the analysis of SARS-CoV-2 Spike sequencing raw data from wastewater v1
Authors: C Reis Ana
Published: July 2023

This protocol describes the bioinformatics procedure to analyse SARS-CoV-2 Spike Illumina sequencing data from wastewater. This workflow can be applied to other sequencing datasets to generate high-quality map to reference results.
educación online en los museos. El caso del Museo de la Evolución humana (Burgos, Castilla y León)
Authors: Alonso Alcalde Rodrigo , Juez Aparicio Laura , Abajo González Andrés
Published: July 2023

La irrupción de la pandemia por COVID-19 paralizó de manera radical el funcionamiento normalizado de los museos. Ante esta situación, el Museo de la Evolución Humana (MEH), situado en Burgos y dependiente de la Junta de Castilla y León, desarrolló un programa educativo que le permitió estar conectado en tiempo real con los centros escolares. Las actividades diseñadas, basadas en la utilización de las nuevas tecnologías de la información y comunicación, han permitido diseñar una serie de visitas online y conexiones en directo a través de redes sociales que han acercado los contenidos del MEH a 100.000 escolares. De esta manera, el MEH se ha convertido en un paradigma que nos permite comprobar cómo la irrupción de la COVID-19 ha servido para consolidar las TIC en el ámbito educativo de los museos.
Genetic variation and population history of three related fir species Abies sachalinensis, A. nephrolepis and A. gracilis (Pinaceae) revealed by nuclear microsatellites
Authors:   Institute of Plant and Animal Ecology, Ural Branch RAS, Semerikov Vladimir L. , Semerikova Svetlana A. ,   Institute of Plant and Animal Ecology, Ural Branch RAS
Published: July 2023

Seventeen nuclear microsatellite loci (nSSR) were used to study the genetic diversity and historical demography of three Northeast Asian fir species: insular Sakhalin fir Abies sachalinensis (Fr. Schmidt) Mast., continental A. nephrolepis (Trautv.) Maxim. and Kamchatka endemic A. gracilis Kom. Bayesian clustering, performed using the STRUCTURE software separated the considered species from each other and divided A. sachalinensis populations into several groups located from south to north. According to the results of ABC analysis, the ancestors of A. nephrolepis and the ancestors of southern populations of A. sachalinensis split about 600 ka BP. Populations of A. sachalinensis of northern Sakhalin originated from A. nephrolepis about 300 ka BP. Populations of central Sakhalin were formed, probably, as a result of mixing of populations of northern and southern Sakhalin during the late glacial (about 18 ka BP). The origin of the A. gracilis is inferred as a result of separation from populations of northern Sakhalin, probably before the last glacial maximum.
When asymmetry mimics zygomorphy: flower development in Chamaelirium japonicum (Melanthiaceae, Liliales)
Authors:   Lomonosov Moscow State University, Remizowa Margarita V. , Shipunov Alexey B. ,   Kyoto University, University Museum, Sokoloff Dmitry D. ,   Lomonosov Moscow State University
Published: July 2023

Pendent sessile flowers of Chamaelirium japonicum (Willd.) N. Tanaka appear zygomorpic, but they do not possess a bilateral symmetry. The flowers are subtended by a vestigial bract and lack a bracteole. The perianth consists of two small tepals on the abaxial side of the flower and four large tepals, none of which is median. Because the short tepals belong to different whorls, there is no symmetry plane. Despite the absence of a bracteole, the shape of the floral meristem before perianth inception resembles that of bracteolate monocot flowers. At early stages, all six tepals are equal in shape and size, and the flower is actinomorphic. The difference between the dorsal and ventral sides and the pendent nature of the flower become expressed during the gynoecium development. The absence of median organs allows to avoid collision of floral organs with the flower-subtending bract during flower curvature. Species of Chamaelirium reveal a set of different flower groundplans, which makes the genus a perfect model to investigate evolutionary changes in flower symmetry accompanied by differential tepal reduction.
“LINGUISTIC” EUROPEAN INTEGRATION, GLOBALIZATION, AND THE PROBLEM OF IDENTITY
Authors:   Ternopil Volodymyr Hnatiuk National Pedagogical University, KOSOVYCH Olga , CHORNIY Raiisa ,   Ternopil Volodymyr Hnatiuk National Pedagogical University
Published: July 2023

The article examines the factors of linguistic integration, the desire of national languages to preserve their identity, the role of the European Union in these processes. Attention is paid to such active factors of integration as Anglo- American borrowings and the Internet. The controversial issue of the influence of borrowings on the linguistic picture of the world is considered. As a counteraction to the factor of integration is the language policy aimed at preserving identity. The authors consider two points of view, two opposing opinions on the issue of regional integration in the world geopolitical, economic, military, cultural and linguistic space: regionalization as an integral part of globalization; regionalization as an alternative to globalization. The authors emphasize that in the era of world globalization, integration processes take place not only in the economy and culture, but also in the language. Moreover, economy and culture are primary in relation to language. Language integration is understood in a broad and narrow sense. In a broad sense – as a process of standardization, unification of language tools in the areas of language use related to the socio-political, economic, cultural life of modern society. In a narrow sense, it is associated with issues of borrowing, primarily from English, and both neutral and expressive means are borrowed. The media and the global information network Internet are the most sensitive to the integration processes. The highest degree of language integration is internationalization, which is manifested mainly in scientific, scientific-technical, political, international legal, pedagogical terminology (as a result of the Bologna Convention). It is summarized that today globalization is one of the main factors and driving forces of the development of the world community. The problems of globalization, including linguistic, are among the most pressing and acute in the modern world, as they are of a universal nature and have a planetary scale of manifestation.
Pseudoanaeurysm of right uterine artery: Rare cause of secondary postpartum hemorrhage (PPH) & managed by uterine artery embolisation
Authors: Naragoni Kavitha , G Shirisha , MV Chalapathi Rao
Published: July 2023

A 24 yrs-old woman (G1P1) had an uneventful first pregnancy, delivered by emergency caesarian section at term. The patient was transferred to our institution on 24th postoperative day with symptoms of severe bleeding per vaginum with syncopal attacks of two episodes. On examination, her vitals were stable, the C- section scar was healthy and uterus well retracted and cervical OS closed with minimal bleeding. Her hemoglobin was 6.1gm/dl and 1 unit of compatible packed cell transfusion was given and broadspectrum antibiotics were started. Trans vaginal ultrasound scan (TVS) with color doppler was done. It confirmed postpartum uterus without any evidence of retained products of conception. Endometrial thickness was 7 mm. A hypoechoic lesion of size 1.7 x 1.0 cm with ‘yin and yang’ blood flow pattern was detected, posteroinferior to the site of scar in the lower segment, suggestive of pseudoaneurysm. CT angiography was done and it was confirmed as pseudoaneurysm of distal branches of right uterine artery. To preserve fertility, right uterine artery and pseudoaneurysm were selectively cannulated and embolization of pseudoaneurysm was performed using N-Butylcyano Acrylate with lipoidol mixture. A post embolization angiographic study was performed to ensure complete exclusion of aneurysm from circulation. She was asymptomatic on follow-up. Doppler and CT angiography are useful techniques to diagnose this condition. Being a minimally invasive procedure selective embolization should be done whenever feasible. Keywords: Pseudoanaeurysm; Uterine artery; Secondary postpartum hemorrhage
Current trends in renal cell carcinoma
Authors: Lalit Bhardwaj , M Gopichand
Published: July 2023

Kidney cancer is one of the most lethal urological malignancies and surgery was the only treatment of modality a decade ago. Open radical nephrectomy was the procedure of choice for long time for all malignant masses. The increase use of imaging modalities has led to diagnose small renal masses and most of the tumors are incidentally detected now a day[1]. Depending on tumor size, age and associated co-morbidities, various management options has evolved like AS, minimal invasive ablation, nephron sparing surgery, laparoscopic and robotic nephrectomy, open radical nephrectomy. Role of renal biopsy has become proven in many circumstances. Targeted systemic chemotherapy has shown improved progression free survival in metastatic RCC. Keywords: RCC-Renal cell carcinoma; Radical nephrectomy; Partial nephrectomy; Laparoscopic nephrectomy; Robotic surgery; Chemotherapy; Renal biopsy
ГАСТРОНОМИЧЕСКИЙ ДИСКУРС КАЗАХСТАНА: АСПЕКТЫ ИЗУЧЕНИЯ
Authors:   Западно-Казахстанский университет имени М. Утемисова, Г. А. Донскова , О. А. Донскова ,   Пятигорский государственный университет
Published: July 2023

Статья посвящена анализу информативной ценности и особенностей воздействия гастрономического дискурса Казахстана. Авторы впервые проанализировали особенности хронотопа, гендерные особенности и ценностную составляющую кулинарного дискурса Казахстана. В статье рассматриваются эти три структурные базовые конструкции дискурса на материалах газетной статьи, сайтов профессиональной и любительской кулинарии, а также рекламы кулинарной продукции производств и ресторанов. Выявляются особенности циклического хронотопа, гендерные ритуальные черты и специфические ценностные характеристики кулинарного дискурса. Авторы пришли к выводу, что многоступенчатая этнокультурная характеристика хронотопа, смещение гендерных характеристик связаны с особенностями целевой установки гастрономического дискурса Казахстана, сочетающей установку на восстановление этнокультурных основ быта и культуры с учетом реалий жизни казахстанцев в ХХI в.
СОНОМИМЕМЫ КАК ЭТНОКУЛЬТУРНЫЕ МАРКЕРЫ В ШОРСКОЙ РУССКОЯЗЫЧНОЙ ПРОЗЕ
Authors:   Кузбасский гуманитарно-педагогический институт Кемеровского государственного университета, Ю. В. Косицина
Published: July 2023

В статье рассматриваются особенности функционирования сономимем как этнокультурных маркеров в русскоязычных текстах шорских писателей-билингвов: Ф. С. Чиспиякова, С. С. Тотыша, Г. В. Косточакова. Представлена классификация сономимем в когнитивно-семантическом аспекте, согласно которой они делятся на эксплицитные и имплицитные. Эксплицитные сономимемы выражены шорскими лексическими единицами и непосредственно выявляются на русскоязычном фоне. Функционируют как конвенциональные звукоподражания и как окказиональные звукосимволические образования шорского языка, как контаминации русских и шорских языковых единиц. Имплицитные сономимемы выражены лексическими единицами русского языка и обнаруживаются в русскоязычном тексте только с учетом контекста и при наличии специальных фоновых знаний. Представляют со-бой окказиональные лексические единицы русского языка, а также являются предметом метаязыкового высказывания.
Республика Бурятия: 100 лет автономии и государственности
Authors:   Dorzhi Banzarov Buryat State University, А. А. Елаев
Published: July 2023

В монографии рассматриваются исторические предпосылки, условия образования и природа автономии бурятского народа, а также развитие национальной государственности в условиях советского федерализма и особенности государственного развития Бурятии и федеративных отношений в России на современном этапе. Книга адресована историкам и широкому кругу читателей, интересующихся историей Бурятии.
Exploring the Influential Factors Affecting Staff Willingness to Adopt Augmented Reality
Authors:   Computer Science Department, Imam Abdulrahman bin Faisal University, Saudi Arabia, Alahmari Muteeb
Published: July 2023

Adopting modern learning technology such as Augmented Reality (AR) technology in higher education has become a demand to enhance teaching and learning performance and motivate students to acquire effective learning processes. Yet, the readiness of universities to adopt modern learning technology, such as AR applications, in developing countries, particularly in Saudi Arabia, is considered one of the critical issues to ensure the AR system’s success. This study aims to explore the factors that influence the academic members’ willingness in Saudi Arabian higher education to adopt modern learning techniques such as AR technology. To test the model, a quantitative survey using a questionnaire with a five-point Likert scale was applied in this study to collect the data. The study was conducted among a sample of 228 academic members and e-learning staff. Based on the analysis, the study found that perceived usefulness and perceived pedagogical contribution are important predicting factors for academic members’ willingness to employ AR in Saudi Arabian higher education teaching. The findings from this study provide insights that assist further studies regarding AR integration factors in higher education. This study contributes to the literature by developing a theoretical and conceptual framework of critical success factors for AR incorporation in Saudi Arabian (SA) universities.
Learning History Activities on Site (LHAOS) Based on Videography Technology
Authors:   the Department of History, Faculty of Social Sciences, State University of Malang, Malang, Indonesia, Sulistyo Wahyu Djoko , Nafi‘ah Ulfatun , Khakim Moch. Nurfahrul Lukmanul , Hartono
Published: July 2023

The learning model is an important and strategic aspect that affects the implementation of learning. Therefore, the learning model used must be varied and innovative to create effective and optimal learning outcomes. The first innovation in learning is the incorporation of technology and the second innovation is the use of historical sites in learning. This has a lot of potential and can solve many problems in history classes. This article presents a videography-based learning history activities on site (LHAOS) learning model that utilizes the Negeri Baru Temple site. The research method used is the research and development (R&D) method, following the analyze, design, develop, implement, and evaluate (ADDIE) approach, which includes the stages of analysis, design, development, implementation, and evaluation. The literature review is also conducted with descriptive analysis. The sources used include books, articles, archives, and other relevant sources. The results of this study include: first, a study of the Negeri Baru Temple site in Ketapang Regency, West Kalimantan, and second, a videography-based LHAOS learning model that utilizes the Negeri Baru Temple site. This learning model consists of three stages: observation, exploration, and reflection. This study reached an average score of 90 from the four aspects of the validator's assessment. The implementation results for the practical test and the effectiveness of the media consisting of seven aspects of the assessment, show an average score of 93.4. From these figures, it can be concluded that the product of the LHAOS model is an effective product.
Geometrical optimization of city gate station’s water bath indirect heater to minimization of fuel consumption
Authors: SHAFIEI Davood , MOSTAFAVI Seyed Alireza , MEHRABADI Saeid Jafari
Published: July 2023

Gas industry as one of the greatest sectors of energy, has a major role in environmental issues. A category of energy intensive parts in gas industry is heaters in City Gate Stations which consume colossal volumes of the purified gases. Different optimization strategies to improve the efficiency of these heaters entailing preheating, waste heat recovery of exhausts, insulating pipelines and mounting economizers or recuperators or even using renewable energy sources have been already introduced. Besides, finding the optimized geometry is very essential in improving the efficiency. In this study, a far efficient model for heaters was introduced using the thermal modeling of the process. Based on the properties of the inlet gas, the volume of the gas passing from the CGS and ambient conditions, the consumption of the fuel as well as heater efficiency have been computed as a function of inlet gas properties, CGS’s gas flow rate and ambient condition. Then, results were verified by real data taken from Arak CGS station in Iran. The comparison proves the great correlation between the theoretical and experimental results. Findings show that with an increase in the heater length, a reduction in thermal re-sistance coincides with a higher thermal hysteresis. This causes higher fuel consumption and lower efficiency. Moreover, the higher the length of the fire tube, the more heat is transferred to the pure water and the higher is the efficiency. Considering the optimized heater configu-ration the efficiency improves two folds; changing from 32% to 71%.
Thermo-economic assessment of air bottoming cycle technology for waste heat recovery purposes from the preheater tower of an Algerian cement plant
Authors: REDJEB Youcef , KAABECHE-DJERAFI Khatima , SEMMARI Hamza
Published: July 2023

The present work deals with the deployment of an air bottoming cycle as a technology for thermal energy valorization. This solution is integrated within the preheater tower on an Al-gerian cement plant. A combined MATLAB- Coolprop optimization tool has been developed to carry out a thermo-economic calculation allowing to design and optimize the air bottoming cycle and also check its economic returns. The developed code employs the genetic algorithm through a multi-objective function aiming to maximize the cycle’s net power output as a pri-ority objective, then minimize the heat exchanger’s area of exchange, and also maximize the cycle’s net present value. through the implemented models on it, the code gives the ability to confirm the applicability of this technology through the Algerian market which is character-ized by one of the cheapest prices of electricity in the world that doesn’t exceed 0.040 $ kWh-1. The obtained results highlight that the implementation of such technology for energy valori-zation purposes from the preheater tower of the selected cement plant can be a profitable and attractive solution, particularly in scenarios of water scarcity. Since the implementation of this technology presented a power capacity of 1.2 MW covering then around 7.8% of the electricity demand of the investigated cement plant. The economic analysis of the proposed ABC cycle pointed out a net present value of 6.59 M$, and a payback time less than 3.6 years, besides a Levelized cost of energy less than 0.017 $ kWh-1 which is a comparable value to the subsidized prices of electricity in the Algerian market.
Concept of Radioactive Waste and Spent Nuclear Fuel in the EU Law. Advantages of Using Spent Nuclear Fuel
Authors:   Ministry of Foreign Affairs of the Russian Federation, Lebedeva Yulia V. , Muratov Oleg E. ,   TWELL LLC.
Published: July 2023

The formation of the unified legal terminology “radioactive waste”, “spent nuclear fuel” and the legal regulation of radioactive waste and spent nuclear fuel management in the European Union law started in 1992 and was completed in 2011 with Directive 2011/70/Euratom, which became the key legal act for further development of radioactive waste and spent nuclear fuel management as an object of legal regulation in European Union law. The methods of scientific knowledge based on dialectical and historical materialism, the methods of logical, system-structural and comparative legal analysis were used in the research. With a unified legal toolkit, Directive 2011/70/Euratom has created a legal framework for a more intensive integration of the Member States of the European Union in the nuclear power industry, which further strengthens the unified European nuclear industry. At the same time, it exposed the contradictions between the Member States of the European Union in their approach to the use of spent nuclear fuel. The struggle between the proponents of a closed and open nuclear fuel cycle in European Union law continues. These different approaches are reflected in the laws of the Member States of the European Union, which apply them in their nuclear industries. A compromise has been reached through Directive 2011/70/Euratom. However, proponents and opponents of a closed nuclear fuel cycle continue to argue about its economic and environmental feasibility. At the same time, new technologies for reprocessing spent nuclear fuel have already demonstrated their tangible economic benefits and environmental safety in practice.
Pitfalls of the Unilateral Termination of an Energy Supply Contract (Risks of the Guaranteeing Supplier in Avoiding the Termination and Using the Unilateral Repudiation Mechanism)
Authors:   Saint-Petersburg Sale Company, JSC, Vasilieva Evgeniya D.
Published: July 2023

The article analyzes the laws of the Russian Federation and the results of their implementation in the area of unilateral repudiation of a power supply contract through the prism of the implementation of the risks of a guaranteeing supplier of electric power in the form of invalidation of its actions and, as a consequence, imposition of administrative sanctions against it. The author examines two opposite situations, which do not contain elements of a violation: the guaranteeing supplier avoiding the termination of a power supply contract in the event of receiving a corresponding application from the consumer, and the guaranteeing supplier independently sending notices of unilateral repudiation of a power supply contract to the consumer. The study is divided into two main parts, each of which contains a detailed analysis of the laws on power supply with comparative legal references to foreign experience in legal regulation of the issues of power supply contract termination (on the example of the CIS member states) and a review of the court practice on various controversial situations, which have been settled in court decisions. The study has resulted in conclusions and recommendations on how to solve the problems arising in this area of activity for the guaranteeing supplier.
Imposition of Administrative Sanctions for Negligent Damage to Heat Networks and Fuel Lines (Gas Pipelines): Issues of Qualification and Subjects of Jurisdiction
Authors:   Gazprom Transgaz Chaykovsky, LLC, Ismagilova Maria M.
Published: July 2023

Security of the state associated with safe operation of fuel pipelines, oil pipelines, petroleum product pipelines, gas pipelines and guarantees of protection of health, protection of the environment, protection of lawful economic interests of individuals and legal entities, the society and the state depends on actions of officials in charge of bringing to the administrative liability for illegal actions related to damaging of heat networks, fuel pipelines (gas pipelines). The article reviews features of qualification of an administrative offense for negligent damaging of heat networks, fuel pipelines (gas pipelines). The study points out that the administrative offense laws need to be amended by exclusion of powers of police officers to make protocols under the reviewed article and leaving such powers exclusively in the jurisdiction of employees of the federal executive authority that performs the federal state supervision in the industrial safety sphere provided that such employees have the right to review an administrative offense case under Article 9.10 of the Administrative Offense Code of the Russian Federation, which is confirmed by the judicial practice and their qualification.
Legal Aspects Of Enforcing The Rights Of Gas Pipeline Title Owners When Performing Works On Land Plots Owned By Others
Authors:   Gazprom Transgaz Saratov Limited Liability Company, Tsyganovsky Roman G.
Published: July 2023

This article is dedicated to a complex study of the issues of protection of rights of title gas pipeline holders (gas pipeline owners and gas pipeline operating companies) in performance of engineering works on gas transmission network sections located within the boundaries of land plots owned by others. Considering the special nature of a gas transmission network as a source of increased danger and a hazardous industrial facility, the author believes that one of the priority areas of gas pipeline operation is regular diagnostics and maintenance as well as in-process current (emergency) repair performed to avoid any breakdowns of the normal operation mode of the gas transmission network and causing of damage to lives, health and property of third parties. Taking into account these circumstances and the specifics of legal regulation of gas pipeline operation, the author of the article singles out the legal problem that lies in the ambiguity of approaches to the solution of the issue of provision of the title gas pipeline holder with access to the operated section of the gas transmission network if such facility is located within the boundaries of a land plot not owned by the gas pipeline holder. In order to solve this problem, the author performs a systemic analysis of the applicable laws of the Russian Federation and the legislative practice of some foreign countries and singles out three key concepts of provision of access to a gas pipeline located at a land plot owned by another person; such concepts include an opportunity to establish private or public easement and imperative proclamation of the unconditional right of the gas pipeline holder to unrestricted access to any section of the operated gas transmission network irrespective of the ownership of land plots such sites are located at. The author gives a systemic evaluation of each of the mentioned conceptual approaches; based on such evaluation, the author brings forward recommendations for improvement of the applicable laws to comply with the proclaimed principle of ensuring energy security of the Russian Federation.
Energy Sector and Justice: Modern Problems of Turbulence and Legal Regulation
Authors:   Institute of State and Law of the Russian Academy of Sciences, Kleandrov Mikhail I. ,   Autonomous Non-Commercial Organization V.A. Musin Research Center for the Development of Energy Law and Modern Legal Science
Published: July 2023

The article deals with the problems of modern legal regulation in the energy sector of the Russian economy which is characterized by serious turbulences. This situation implies difficulties in the effective functioning of the mechanism of justice. The necessity of definitive goal setting at the basic level both in legal regulation of the energy sector and in judicial activity is proved. Suggestions of a fundamental nature — in essence and in form — are made. The need to really take into account the “green” impact on our economy, first of all, when determining the strategic goals of its development, is also important with regard to the problem discussed in this article. It is noted that the judicial policy should to become a benchmark for the improvement of the mechanism of justice in the energy, basic, crucial for the state sector of the economy with turbulent regulation.
Gas Law: Formation and Development
Authors:   Autonomous Non-Commercial Organization V.A. Musin Research Center for the Development of Energy Law and Modern Legal Science, Romanova Viktoria V.
Published: July 2023

At present, the importance of gas law has increased significantly due to the demand for gas as an energy resource in domestic and foreign markets. The International Energy Agency states that, despite the clear trend to further prioritize low-carbon renewable energy sources, the use of natural gas will continue to grow strongly in the coming years in all scenarios studied by the International Energy Agency. In addition to the natural gas market, the LNG and LPG markets also continue to develop. To date, there are not many legal studies on gas law. However, representatives of legislative bodies, experts, academia and energy companies emphasize the need to improve the legal regulation of gas markets at the national and international levels. In order to fully study and develop gas law, it is advisable to conduct a number of legal studies, including comparative legal studies with foreign gas law, including the law of the member states of the Eurasian Economic Union and the law of potential importers of Russian gas.
Simulation of the processes of drilling polymer composite blanks using digital twins
Authors:   Ulyanovsk Research Institute of Aviation Technology and Production Organization, Ilyushkin M. V. , Kiselev E. S. ,   Ulyanovsk State Technical University
Published: July 2023

Polycrystalline composite materials made of carbon fiber reinforced plastics have more and more widespread application in mechanical engineering and become the main material for the production of modern types of high-speed transport. Thus, their share has already reached 35–45 % in the structural design of passenger aircrafts. However, the technology of machining surfaces of parts made of these materials, in particular, holes, is characterized by insufficient knowledge, the absence of regulatory standards for cutting modes and is most often based on the production experience of enterprises. When changing the processing conditions and the material, the pre-production engineering duration causes a significant increase in the cost of manufacturing parts due to the need for experimental selection of the cutting mode rational elements. To exclude the empirical selection of rational elements of the machining equipment cutting mode, the authors considered the possibility of using digital twins for studying the processes of drilling holes in the blanks made of composite materials, including those with the ultrasonic field energy introduction into the new surface shaping zone (to improve the processing quality and productivity). When modeling, the LS-DYNA program was used. The authors prepared the models and processed the results using the LS-PrePost 4.8 program. During the study, an explicit modeling method was used with preliminary validation and calibration of the results of tests of composites. The authors carried out calibration on test operations of tension, three-point bending, and interlaminar shear of the ВКУ-39 polymer composite material based on carbon fibers (carbon fiber reinforced plastic) widely used in domestic engineering. The developed finite element computer models allow simulating drilling procedures without carrying out rather complicated and expensive field tests. As a result of modeling, a simulation file was obtained, which reflects the process of drilling holes in a polymer composite material blank, as close as possible to the real-life situation with chip removal.
The formation of highly dispersed zinc oxide powder during combustion of zinc nitrate with glycine mixture and its application for photocatalytic phenol decomposition
Authors:   Samara State Technical University, Amosov A. P. , Novikov V. A. ,   Samara State Technical University, Kachkin E. M. ,   Samara State Technical University, Kryukov N. A. ,   Samara State Technical University, Titov A. A. ,   Samara State Technical University, Sosnin I. M. ,   Togliatti State University
Published: July 2023

The paper presents the results of a detailed study of the process and products of combustion during self-propagating high-temperature synthesis (SHS) of ZnO zinc oxide powder from mixtures of such common reagents as oxidizer zinc nitrate and reducing agent (fuel) glycine, as well as the application of synthesized highly dispersed submicron and nanosized ZnO powder for the phenol photocatalytic decomposition under the action of ultraviolet irradiation. An aqueous solution of a mixture of reagents (the SHS-S process or Solution Combustion Synthesis – SCS) and the gel from a mixture of initial dry reagents formed when they were moistened due to hygroscopicity (the SHS-G process or Gel Combustion Synthesis – GCS) were combusted. The authors studied the phase and chemical compositions, the structure of the combustion product, and the effect of calcination in an oxidizing air medium and grinding in drum ball and planetary-centrifugal mills, as well as in mortar, on them and their photocatalythic activity. The study showed that calcination considerably increases the photocatalytic activity of combustion products due to a significant decrease in carbon impurity in the unburned fuel remains, and grinding in mills reduces the photocatalytic activity due to iron contamination and coarsening of ZnO particle agglomerates. The difference between the photocatalytic activity of the SHS-G and SHS-S products in the phenol decomposition is evident only at the initial stage of ultraviolet irradiation, after which this difference disappears. The authors discuss the direction of further research to increase significantly the photocatalytic activity of zinc oxide synthesized during combustion to use it effectively for the phenol decomposition under the action of visible light.