bluuebunny/crossref_metadata_2025 huggingface dataset:
NDE DATA CORRELATION USING ENCODE-DECODER NETWORKS WITH SCALOGRAM IMAGES
Authors: DARGAHI MOZHGAN MOMTAZ , LATTANZI DAVID
Published: October 2022

Nondestructive Evaluation (NDE) technologies are increasingly used for structural condition assessments. Over the lifespan of a structure, a variety of NDE techniques may be employed, leading to a scenario where a structure’s life-cycle time history is depicted through a variety of complex and heterogeneous measurements. Therefore, improved understanding of the statistical associations between NDE data sources would allow engineers to integrate these data sources for analysis purposes. It would also provide new insights into the fundamental information shared between heterogeneous NDE observations, potentially leading to new forms of structural monitoring and assessment. This paper explores the correlations between NDE data types through an encoder-decoder neural network architecture. The network is designed to take in one type of NDE measurement as input, generating a synthetic measurement from a second NDE measurement as output. At the center of the encoder is a dimensionally reduced latent representation of the information that is shared between two associated NDE data sources. Additionally, this paper shows how transforming waveform NDE data into 2D time-frequency images using a Continuous Wavelet Transform (CWT) facilitates network training and representation of these shared fundamental data features. To illustrate this concept, the results from a series of laboratory scale tests are presented, representing how this network architecture would represent information collected from NDE of bridge decks.
AN AUTONOMOUS BRIDGE LOAD RATING FRAMEWORK USING DIGITAL TWIN
Authors: AI LI , BAYAT MAHMOUD , COMERT GURCAN , ZIEHL PAUL
Published: October 2022

Load rating of bridges is used to understand the working status and carrying capacity of bridge structures and components and is necessary to the safety of transportation. The current manual load rating procedure is, however, time-consuming. An intelligent and automatic load rating approach can be beneficial to supplement or eventually perhaps replace the current manual procedures. The innovation of this paper lies in developing an autonomous load rating framework by leveraging Digital Twin (DT) techniques. Full-scale laboratory testing of a bridge slab was conducted to verify the efficiency of the proposed framework. The ultimate moment capacity of the slab was obtained by carrying out four-point bending test. The testing procedure was monitored in real-time with multiple strain gauges. A real-scale finite element model of the slab was developed and calibrated with the testing results. The proposed DT framework of the bridge slabs was developed by integrating the numerical modeling and the strain monitoring. The proposed DT framework is intended for field application, and field results will be discussed.
Multivariate Analysis of Co-creation Activities in University Education
Authors: Vardakosta Eirini , Priniotakis Georgios , Papoutsidakis Michail , Sigala Marisa , Nikolopoulos Dimitrios
Published: October 2022

This paper investigates the viewpoints and perspectives of 179 undergraduate students engaged in a co-creation project regarding their anticipated progress, exploring, simultaneously, the affecting factors. The students attended the physics course in the Department of Industrial Design and Production Engineering at the University of West Attica, Greece. The investigation is implemented through a questionnaire that appraises the students' co-creation expectations in association with collected demographic data via twenty-two close-ended questions (Q1-Q22). Several statistical data sets are presented, including descriptive and correlation statistics and principal component and exploratory factor analyses. The majority of the replies are provided by male participants in their first year of study, with an average age of between 18 and 19. The correlation coefficient between the questions ranges from -.04 to.73, with the maximum occurring between the questions Q19 and Q20. Factor analysis justified by KMO (.862) and Bartlett’s sphericity (1749.843, p= .000) tests indicates five principal components within the following factors determining the undergraduate co-creation activities: responsible behaviour, feedback, helping, tolerance, and personal interaction. The above findings may contribute to the implementation of students’ co-creation as they are valuable tools for the design and pre-requisites for a successful implementation.
Deep Learning Based Power Allocation Schemes for NOMA System with Imperfect SIC
Authors: Saetan Worawit , Thipchaksurat Sakchai
Published: October 2022

Non-orthogonal multiple access (NOMA) has been a promising technology for 5G communication system. NOMA allows more than one user to utilize the same resource at the same time, which can lead to high performance in terms of spectral efficiency, energy efficiency or fairness. NOMA enables power domain multiplexing and separates the multiplexed signal by using successive interference cancellation (SIC). Therefore, the full benefit of NOMA depends on power allocation. However, in practical system, residual interference caused by SIC process can severely degrade a system performance. In this paper, we propose two power allocation schemes based on deep learning to alleviate the effect of imperfect SIC for downlink NOMA system, including a deep learning-based sum rate power allocation scheme (DL-SRPAS) and a deep learning-based energy-efficient power allocation scheme (DL-EEPAS). our two proposed schemes learn two optimal power allocation schemes provided through exhaustive search. We search the solution of the optimization problems, where two optimization problems are formulated to maximize the sum rate and the energy efficiency subject to a minimum user data rate requirement. The simulation results verify that our two proposed schemes can alleviate the effect of imperfect SIC and outperform two conventional power allocation schemes which maximize the sum rate and the energy efficiency without considering imperfect SIC. In addition, our proposed schemes achieve near-optimal performance with very low computational time.
Analysis of Edge Intelligent Frameworks and their Security Issues
Authors: Waleed Muhammad , Kosta Sokol , Skouby Knud Erik
Published: October 2022

Edge Intelligence has become increasingly popular and has already made its place to increase the overall system performance by reducing the burden of the cloud and the network. In edge intelligent frameworks, a massive amount of data generated are not provided to the central cloud, and data analysis is carried out at the edge. Edge intelligence IoT environments comprise heterogeneous devices that communicate over the network, making it essential to protect the data and users’ information. Through these edge frameworks, numerous users and devices take part in communication where the exchange of sensitive data occurs. Therefore, security in such frameworks is crucial and a key challenge for reliable communication. This paper performs an analysis of popular AI/ML applications toward edge intelligence focusing on highlighting the critical security and privacy concerns desired in such systems. After a thorough investigation, we show that although several promising edge intelligent frameworks have been developed to address energy and performance issues, they do not consider the security and privacy of the data as the researchers are more focused on the performance predicaments.
CT angiograms for lower GI bleeding: the experience of a large UK teaching hospital
Authors: Snelling S , Ghaffar R , Ward ST
Published: October 2022

Introduction

The clinical presentation of lower gastrointestinal bleeding (LGIB) is variable in severity, cause and potential investigations. The British Society of Gastroenterology recently published LGIB guidelines, recommending CT angiography (CT-A) for haemodynamically unstable patients, defined by shock index (SI) greater than 1. The aim of this study was to assess the use and role of CT-A in diagnosing LGIB, by assessing the pickup rate of active LGIB defined by contrast extravasation or ‘blush’ and to determine any association between positive CT-A with various patient and clinical characteristics.

Methods

A retrospective analysis was carried out of 4 years of LGIB admissions. Demographics, inpatient observations and use of blood products were acquired. Vital signs nearest the time of CT-A plus abnormal vital signs preceding imaging were used to calculate SI, Age SI, National Early Warning Score 2 (NEWS2) and Standardised Early Warning Score (SEWS). A consultant gastrointestinal radiologist further reviewed all consultant-reported scans.

Results

In total, 930 patients were admitted with LGIB. Median age was 71 years and 51% were male; 179 (19.2%) patients received red blood cell transfusion and 93 patients (10%) underwent CT-A, who were older and were likely to be hypotensive and receive red cell transfusions. Following exclusions, 92 CT-As were included in the analysis. Nine (9.8%) were positive. Univariate analysis showed no association between positive CT-A and any scoring system. A multivariate analysis, including age and gender, showed association between both NEWS2 and SEWS scores with positive CT-A.

Conclusion

In our analysis of the typical LGIB population, CT-A has shown relatively low pick up rate of active bleeding. CT-A clearly has a role in the investigation of LGIB, but selection remains challenging.
Um exemplo de abordagem do referencial de educação para o risco: proteger a floresta, porquê?
Authors: Vaz Anabella
Published: October 2022

No Agrupamento de Escolas João de Deus, no ano letivo 2017-2018, abraçámos a experiência de Autonomia e Flexibilidade Curricular, concretizada no posterior Decreto-lei n.º 55 de 2018 de 6 de julho, do Ministério da Educação (ME), que sublinha novas linhas orientadoras do currículo dos ensinos básico e secundário. O tema de Projeto,“Os Incêndios Florestais”, surgiu na sequência do impacte nacional das fatídicas consequências dos incêndios florestais da Região Centro, nos meses de junho e outubro, e teve como finalidade dar um contributo, ao nível da educação, para a minimização desse flagelo nacional. Demonstra-se que o projeto interdisciplinar realizado, se enquadra no Referencial de Educação para o Risco (RER 2015), testemunhando a importância deste como documento orientador da prática docente, facilitador do trabalho e da consciencialização cidadã de todos os que nele participaram. Dos trabalhos realizados pelos alunos salienta-se um poster que resume as aprendizagens efetuadas e reforça a necessidade de proteção da floresta, face ao seu múltiplo valor.
Plataforma de monitorização e promoção da saúde psicológica/ocupacional dos profissionais de emergência médica
Authors: Monteiro Fonseca Sílvia , Cunha Sónia , Campos Rui , Faria Sara , Queirós Cristina
Published: October 2022

A prevenção e promoção da saúde psicológica e ocupacional dos profissionais de emergência médica pré-hospitalar assumem especial relevância, dada a sua maior vulnerabilidade e risco, especialmente durante a COVID-19. Porém, são escassos os recursos humanos e técnicos que permitam regularmente prevenir e promover estes indicadores, e a utilização de sistemas tecnológicos e informatizados na saúde (designada genericamente como e/m-health), apesar da forte expansão não é dirigida às necessidades específicas dos profissionais de emergência. Este artigo apresenta o SIROPH (Surveilling and Improving Rescuers’ Occupational and Psychological Health), um protótipo de monitorização e gestão dos fatores de risco/protetores da saúde psicológica e ocupacional dos profissionais do INEM. Previamente, foi consultado um grupo multidisciplinar de profissionais do INEM, realizada uma revisão aprofundada da literatura e realizada uma avaliação de necessidades junto da população-alvo (n=160), revelando lacunas sobre os temas do stress, depressão, trauma e bem-estar. Daqui resultou o SIROPH, que foi desenvolvido enquanto unidade Moodle e website separado, e incluiu questionários, devolução de resultados (individuais/coletivos), conteúdos psicoeducativos e estratégias/exercícios de prevenção do adoecer psicológico.
Plano de preparação das comunidades expostas a risco tecnológico
Authors: Lolive Jacques , Okamura Cintia
Published: October 2022

O processo rápido e às vezes desordenado de expansão urbana tem aproximado fisicamente indústrias e população aumentando a probabilidade de exposição das pessoas a grandes acidentes tecnológicos. Alguns acontecimentos testemunham como as catástrofes que ocorreram em Seveso na Itália (1976), em Bhopal na Índia (1984), Vila Socó em Cubatão (1984) e, mais recentemente, em Alemoa, Santos (2015) e Beirute no Líbano (2020). Tal contexto mostra a necessidade de procedimentos que contemplem a definição de estratégias de intervenção, de gestão da informação e de mobilização da população nessas situações. Apresentaremos a norma publicada em setembro de 2021 concebida pelaCETESB - Companhia Ambiental do Estado de São Paulo - órgão governamental paulista, destinada a orientar os empreendimentos na elaboração do “Plano de Preparação das Comunidades Expostas a Risco Tecnológico (PPC)” a fim de preparar a comunidade local para situações de acidente tecnológico grave e, em particular, treiná-la para uma resposta adequada da população, de forma rápida, calma e ordeira.
Papel dos agentes de proteção civil na segurança comunitária – a relevância dos corpos de bombeiros –
Authors: Amaro António Duarte
Published: October 2022

O papel da proteção civil na segurança comunitária é hoje uma das temáticas mais prementes e prioritárias nos debates da atualidade nacional e internacional, em diferentes escalas.Entre nós, para se realizar, a proteção civil recorre a um conjunto de agentes, com relevância para ao Corpos de Bombeiros suportados, na sua maioria, por Associações Humanitárias. Entretanto, sem prejuízo desta relevância dos Corpos de Bombeiros a reforma aprovada a partir de julho/2006, reforçou a autoridade do Estado no setor e definiu as atribuições, competências e responsabilidades dos diversos agentes de proteção civil, enquadrando-as no Sistema Integrado de Operações de Socorro. Ora, é na coordenação dos diversos agentes com culturas e formação diferenciadas, que reside um dos principais problemas da gestão operacional da proteção civil.
Segurança do setor de petróleo e gás no Brasil: clima passado e cenários futuros frente as mudanças climáticas
Authors: Bitencourt Daniel Pires , Ramos Soares Pinto Valéria Ramos Soares Pinto
Published: October 2022

As emissões, incêndio ou explosão de substâncias perigosas de grande magnitude são chamadas de acidentes ampliados. Tais eventos podem ser causados ou agravados pela condição atmosférica. O objetivo deste artigo é abordar variáveis e eventos atmosféricos no Brasil com potencialidade de prejuízo à segurança do setor de petróleo e gás. Para tanto, analisa-se o vento, temperatura e precipitação, assim como as descargas elétricas, ondas de calor e tornados, em 12 subáreas com extração de petróleo e gás ou refino, armazenamento e transporte destes produtos. O clima passado (1961-2000) é analisado por meio de simulações numéricas e com base na literatura científica. Tanto para o período de 1961-2000 quanto para as projeções futuras (2020-2099), as quais consideram dois possíveis cenários, um otimista e outro pessimista, são calculados os riscos de ocorrência de valores extremos de temperatura e vento. Quanto a temperatura máxima, os resultados das projeções mostraram risco maior para o período de clima futuro em relação ao clima passado, sendo mais significativo nas subáreas da região tropical do Brasil. Nas projeções com cenário climático pessimista, há tendência de risco máximo nessas áreas tropicais. Quanto aos valores extremos da velocidade do vento, tanto as projeções otimistas como as pessimistas apontam para risco oscilando entre 1 e 2, numa escala de 0 a 4, durante o período de clima futuro, que é o mesmo padrão observado durante o período de clima passado.
Hipertermia na redução de sintomas traumáticos e depressivos em profissionais envolvidos em acidentes
Authors: Queirós Cristina , Oliveira Simão , Fonseca Sílvia Monteiro , Faria Sara , Cunha Sónia
Published: October 2022

O risco de adoecer psicológico (ex.: ansiedade, depressão ou stress pós-traumático) é elevado nos profissionais cuja atividade laboral implica atuar em acidentes, seja na prestação de socorro ou noutras funções, surgindo também perturbações do sono, pesadelos e pensamentos intrusivos. Apesar das intervenções no trauma serem mais de cariz cognitivo-comportamental, e na depressão/ansiedade serem mais de tipo farmacológico, a hipertermia de corpo inteiro começa a ser utilizada na depressão. Este estudo pretende avaliar o impacto de uma sessão de hipertermia no estado emocional e na qualidade/duração do sono em 19 profissionais variados, parte dos quais atuam em acidentes. Os dados foram recolhidos usando uma pulseira Xiaomi para medição do tempo de sono e questionários online sobre ansiedade, depressão, stress, burnout e sintomas traumáticos, aplicados antes da sessão e semanalmente até um mês depois da sessão. Encontrou-se uma melhoria do bem-estar geral e emocional e aumento do tempo/qualidade do sono, sugerindo que a hipertermia pode ser uma intervenção promissora no futuro.
Fatal Venous Gas Embolism During Endoscopic Retrograde Cholangiopancreatography After Simultaneous Deployment of 2 Self-Expandable Metallic Stents
Authors: Chuang Justin , Kuang Rebecca , Ramadugu Ajit , Patel Dipen , Sharma Sachit , Shrestha Kishan , Burlen Jordan , Nawras Ali
Published: October 2022

Gas embolisms are a rare complication of endoscopic retrograde cholangiopancreatography (ERCP). While there have been multiple reports of ERCP-associated air embolisms, only 2 case reports using oral cholangioscopy and CO2 insufflation have been reported in the literature. We present a unique case of a fatal CO2 venous air embolism during ERCP without using cholangioscopy and with no intentional CO2 insufflation of the biliary tree.
Open-Capsule Budesonide for the Treatment of Isolated Immune Checkpoint Inhibitor-Induced Enteritis
Authors: Hussain Nadeen , Robert Marie , Al-Bawardy Badr
Published: October 2022

Immune checkpoint inhibitors (ICIs) have revolutionized the management of various advanced-stage malignancies. The utilization of ICIs can be limited by their immune-related adverse events such as diarrhea and enterocolitis. Isolated ICI-induced enteritis is an uncommon presentation compared with ICI-induced colitis/enterocolitis. ICI withdrawal and systemic corticosteroids can lead to resolution of enterocolitis in up to 70% of patients. We present a rare case of isolated ICI-induced enteritis refractory to high-dose systemic corticosteroids and responsive to a course of open-capsule budesonide only.
ال مدى خضوع حكم التحكيم الوطني للطعن بإعادة المحاكمة "دراسة مقارنة"
Authors: الدن د. حسام الدين محمود
Published: October 2022

يتميز نظام التحكيم بالسرعة والإنجاز في فصل النزاعات، واختصار الوقت والإجراءات، ومع ذلك فقد يصدر عن هيئة التحكيم حكم، ثم يتضح فيما بعد وجود بينات أو مستندات مزورة أو اعتراها الغش وبُنيَ عليها الحكم، وهنا تكمن الإشكالية؛ فهل يمكن للأطراف في هذه الحالة التقدم بطلب إعادة محاكمة بشأن ذلك الحكم؟ وفي حال السماح قانوناً بالطعن بإعادة المحكمة على حكم التحكيم، فهل تكون الجهة المختصة بإعادة المحاكمة هي هيئة التحكيم ذاتها أم المحكمة النظامية المختصة؟. لا شك أن الأصوب هو أن تتولى هيئة التحكيم هذه المهمة، باعتبارها الأخبر بموضوع النزاع. ولكن ذلك يسوقنا إلى دراسة هذا الموضوع والبحث فيه بشكل معمق بهدف بيان الإجراءات القانونية السليمة واجبة الاتباع لمباشرة هذا الطعن غير العادي فقهاً وقانوناً. ويتأتى ذلك في ظل عزوف العديد من تشريعات التحكيم المقارنة عن تنظيم هذه المسألة. وعليه فقد تناول هذا البحث من خلال منهج المقارنة الموقف القانوني للمشرع الفلسطيني والعربي من الطعن غير العادي على حكم التحكيم، وحالاته وإجراءاته، مع إطلالة على موقف بعض تشريعات التحكيم العربية والأجنبية المقارنة، وذلك من خلال أربعة مباحث لبيان ماهية الطعن بإعادة المحاكمة والأحكام التي تخضع لهذا الطريق من طرق الطعن، وتلك التي لا يجور أن تخضع له، وبيان موقف الفقه وبعض التشريعات منه. وقد خلص هذا البحث إلى أن التنظيم التشريعي الفلسطيني الحالي للطعن بإعادة المحاكمة على حكم التحكيم وكذلك الأمر في العديد من التشريعات العربية غير كافي، وينبغي تطويره وتعديله في ظل تباين واختلاف الأنظمة القانونية المقارنة حول جوازه من عدمه. وقد أوصى الباحث المشرع الفلسطيني والعربي بالنص صراحة على إمكانية الطعن بإعادة المحاكمة على حكم التحكيم على غرار بعض تشريعات التحكيم المقارنة وتنظيم إجراءاته وحالاته وتحديد الجهة المختصة بنظره، وذلك على نحو يتناسب مع نظام التحكيم.
Techno-Economic Assessment of a 100 kWp Solar Rooftop PV System for Five Hospitals in Central Southern Thailand
Authors: Khamharnphol Rawit , Kamdar Ismail , Waewsak Jompob , Chiwamongkhonkarn Somphol , Khunpetcha Sakrapee , Kongruang Chuleerat , Gagnon Yves
Published: October 2022

This paper presents a techno-economic assessment of a 100 kWp solar rooftop photovoltaic (PV) system at five hospitals in central southern Thailand.  The system encompasses 100 kWp PV panels, 100 kW grid-tied inverters and balance of system (BOS) under the grid code of the Provincial Electricity Authority (PEA).  The latest PV technology of bifacial mono-crystalline solar panels, inverters and BOS were simulated along with the Meteonorm 7.3 database using the PVsyst simulation toolkit with different tilt angles, orientations, solar radiations and ambient temperature.  The technical aspects of solar rooftop PV power generation systems include the annual energy output and the performance ratio (PR) under IEC standard.  Further, an economic analysis of the model was examined using a cost benefit analysis (CBA) and various assumptions.  Four main financial criteria, i.e., benefit cost ratio (BCR), net present value (NPV), internal rate of return (IRR), and payback period (PBP) were evaluated under three different scenarios: (1) self-consumption scheme, (2) feed-in tariff (FiT) scheme, and (3) private power purchase agreement (PPA) scheme.  Finally, the levelized cost of energy (LCOE) was also calculated.  The results reveal that the Takua Thung hospital is characterized by the maximum average global horizontal irradiation (GHI) and the maximum annual produced energy of 199 kWh/m2 and 164.8 MWh/year, respectively.  The PR calculated for all hospital sites is above 85%. The outcomes of the financial analysis show that the optimum scenarios are PPA and FiT schemes.  The LCOE analysed in this study indicates that the Takua Thung hospital site has the lowest LCOE at 2.47 THB/kWh (0.07 USD/kWh).  This research confirms the potential for hospitals and stakeholders in central southern Thailand for investments in solar rooftop PV systems
Consistent Regime-Switching Lasso Model of the Biomass Proximate Analysis Higher Heating Value
Authors: Kijkarncharoensin Akara , Innet Supachate
Published: October 2022

Prediction accuracy is crucial for higher heating value (HHV) models to promote renewable biomass energy, especially its consistency is crucial when retraining data and knowledge of the range are unavailable. Current HHV models lack consistency in accuracy and interpretability due to various reasons. Thus, this study aimed to construct an interpretable and consistent proximate-based biomass HHV model on a wide-range dataset. The model, regime-lasso, integrated the concepts of regime-switching, lasso regression, and federated averaging to construct a consistent HHV model. The regime-switching partitioned the dataset into optimal regimes, and the lasso trained the regime models. The regime-lasso model is a collection of these models. It provided root  mean square error of 0.4430– 0.9050, mean absolute error of 0.2743–0.6867, and average absolute error of 1.512–4.5894% in the literature’s wide-range datasets. The Kruskal–Wallis test confirmed the in-sample performance consistency at α=0.05, regardless of the training sets. In the out-of-sample situations without retraining, the model preserved its accuracy in six out of 11 datasets at α = 0.01. The interpretability of regime-lasso indicated the regime characteristic to be a factor of inconsistent prediction. The increase in FC had the maximum positive impact on HHV in the 2nd and 3rd regimes, while the increase in ASH negatively impacted the 1st and 2nd regimes. VM variation had neutral effects in all regimes. The regime-lasso solves the issues of accuracy declination and addresses the challenges in sensitivity analysis of the HHV model. The prediction accuracy issues of the model’s direct implementation were fixed.
Removal of Diclofenac-Na from aqueous solution onto H3PO4 modified composite clay
Authors: Ajani Ayobami Olu , Adeniji Ademola Toheeb , Ayodabo Samson Shina , Alade Abass Olanrewaju , Afolabi Tinuade Jolaade , Ganiyu Sofiat Ololade
Published: October 2022

Under batch experiment conditions, this work seeks to successfully remove Diclofenac-Na (DCF-Na) from an aqueous solution utilizing a composite sorbent made of Bentonite, Kaolinite clay, and Worm casting (BKW). This study investigated the structural modification of the H3PO4 Modified Clay by X-ray fluorescence and the effect of selected adsorption factors – DCF-Na concentration and modified BKW composite dosage. The concentration equilibrium data was used to study six isotherm models. Freundlich isotherm model better explained the adsorption of DCF-Na onto modified BKW composite with a correlation coefficient close to 1. Kinetics models were examined, and the Elovich model gave a better fit than other kinetic models studied. Mass diffusion mechanisms and thermodynamics studies were successfully carried out. The enthalpy change values evaluated were negative, which revealed the spontaneity of DCF-Na remediation onto modified BKW, and that DCF-Na adsorption is exothermic and occurred through a physisorption process.
Synthesis, structure and features of formation of biphasic hybrid polymer compositions based on bentonite
Authors: Mamytbekov Galymzhan , Zhakanbaev Eldar , Nurtazin Ernat , Glushenko Victor
Published: October 2022

The synthesis, structure and features of the formation of biphasic hybrid polymer compositions based on natural ionite (bentonite – BT), its intercalated complex (ICC) with a solid solution of copper ferrocyanide K4-хCux[Fe(CN)6] and a synthetic rare cross-linked acrylamide-acrylic acid copolymer were studied. The mechanism of formation of biphasic intercalated and percolated structures was analyzed by means of X-ray diffraction, X-ray fluorescence analysis, IR-Fourier spectroscopy and stress-strain curves. It is shown that the impregnation of the mineral bentonite filler into the polymer matrix, including its intercalated complex {BT:K4-xCux[Fe(CN)6]} is accompanied by an increase of non-uniformity of the structure of the hybrid composite material. It has been established that the main factor characterizing the deformation stability of the composite is the adhesive strength at the interface between the mineral filler and the polymer matrix. Under uniaxial tension of the P[AA-AA]{BT} composition and the percolated complex P[AA-AA]{BT:K4-xCux[Fe(CN)6]} their internal structure is rearranged resulting in stretching of agglomerates of solid fillers along polymer chains, which is determined by the adhesion force between polymer chains and mineral particles at the phase boundary. It is proposed to consider such biphasic hybrid composite materials as a promising class of interpenetrating networks with valuable applied properties.
Evaluation of the effectiveness of commercial demulsifiers based on polyoxyalkylated compounds in relation to oil and water emulsions of the Sarybulak oilfield
Authors: Adilbekova Akbota , Faizullayev Saidulla , Kujawski Wojciech
Published: October 2022

Water and oil emulsion formation is a natural process that takes place during oil recovery and processing. Heavy oils of Kazakhstan form highly stable oil emulsions mostly stabilized by a high content of asphaltenes, resins, and other surface-active components. Oil-in-water emulsions initiate the corrosion of equipment and cause transportation issues. Dewatering of oil emulsions is economically reasonable and requires universal techniques which could be applied to any sort of oil. In this study, the chemical composition of crude oil from the Sarybulak oilfield was determined, and commercial demulsifiers of Basorol brand were applied to these water-in-oil emulsions. The natural stabilizers content (asphaltenes and resins) was determined and correlated with IR-spectrum data. Finally, the effectiveness of demulsifiers is compared and explained according to their structures. It has been found that the higher the relative solubility number of the demulsifier, the better water-in-oil emulsion separation efficiency and dewatering mechanism was assumed. Results of water separation showed that Basorol PE-10400 and PE-10500 are the most effective, with DE of 96% and 91%, respectively, for 30% (vol.) water-in-oil emulsion at 60°C during 1-hour treatment.
Acid-Modified ZnO Nanoparticles Embedded Polysulfone Membranes for Separation of Copper from Industrial Wastewater
Authors: Yogesh Chendake , Pallavi Mahajan-Tatpate , Supriya Dhume , Sachin Chavan
Published: October 2022

Copper is one of the crucial materials for the biological activity of human beings and is known for antimicrobial properties during wound management. Hence its presence in the effluent is overlooked although it is reported to be detrimental at higher concentrations. Its effect on humans varies from simple dizziness, diarrhea to liver/kidney damage, etc. Various techniques are reported for separation of these toxic pollutants from effluent. This article focuses on development of polysulfone-based membranes with use of additives: polyethylene glycol (PEG) and ZnO nanoparticles (NPs) (nascent and modified with HCl) for separation of copper from effluent by Donnan Exclusion principle. The incorporation of acid treated ZnO NPs in membrane matrix provides surface charge to membrane. This results in repulsive interaction with copper salts from process which retained in retentate as per Donnan exclusion principle. The membrane formed with 40% PSF- 0.8% ZnO NPs shows the rejection of copper up to 40%, which raises to 61% when instead of nascent NPs, HCl treated NPs were used. The rejection efficiency of the membrane raises up to 90% when PEG was used along with PSF and ZnO NPs (acid treated). The use of modified NPs in membrane matrix has strong impact on membrane morphology and rejection efficiency. The modification of surface charge properties and morphological distribution of NPs is supported by FTIR and EDX. Further the separation works upon physical distribution of NPs, which would help to maintain the stability properties of PSF based membrane enhancing its applicability in actual process conditions.
The concept of information system for providing monitoring of space in order to increase military security
Authors:   Zhytomyr Military Institute named by SP Korolyova, Bespalko I. A. , Hrekov L. D. ,   Limited Liability Company “Scientific and Productive Enterprise “Vector”, Pekariev D. V. ,   Section for Applied Problems National Academy of Science of Ukraine, Fedorchuk D. L. ,   Zhytomyr Military Institute named by SP Korolyova
Published: October 2022

The concept of an information system to provide the monitoring of space in order to increase military security is proposed with the accounted-for peculiarities of solving problems by the domestic structures of the security and defense sector. The concept is based on the separation of the functionality of open and specialized parts of the algorithm and software support for analyzing the space situation with the attainment of their compatibility. The results of the capability analysis of the publicly available software, which can be used for the evaluation of the space situation as an additional means, are presented. The functional model of the information system to provide the monitoring of space was developed, and a decomposition of its main functional block — a general assessment of the space situation has been carried out. The main software components of the algorithm and software support for the overall estimating of the space situation are determined: detection and monitoring of space objects, maintenance of the database of space objects, modeling and display of the space situation, and their main tasks are outlined. The structural scheme of the software and hardware complex of the general estimation of space situation is developed. Further ways of research are offered: concretization of the functionality of the components of the algorithms and software support of the general estimation of the space situation, substantiation and development of databases’ structures of space objects and objects of space activity, creation of the relevant software and hardware complexes and check of the adequacy of the used mathematical models, as well as issues of information security.
The influence of the Gaussian curvature sign of the compound shell structure’s middle surface on local and overall buckling under combined loading
Authors:   Zaporizhzhia National University, Gristchak V. Z. , Hryshchak D. V. ,   The Ministry for Strategic Industry of Ukraine, Dyachenko N. M. ,   Zaporizhzhia National University, Baburov V. V. ,   Yuzhnoye State Design Office named M. K. Yangel
Published: October 2022

The buckling problem of an elastic compound shell structure with a variable Gaussian curvature of the middle surface, especially the middle surface meridian curvature sign, under the action of external pressure and axial loading is considered. In continuation of the previous research of the authors, this paper is devoted, in particular, to examining the influence of the negative Gaussian curvature sign of one of its compartments on stability. The solution is based on using the method of finite differences for basic stability equations of each compartment in the case when one of them can have a negative curvature of the meridian, taking into account the discreteness of the intermediate rib location and their rigidity from the initial curvature plane as well. The obtained solution allows visualizing the buckling modes under various combinations of external loading and identifying rational, according to overall buckling modes, geometric and rigidity parameters of the system being investigated.
Gravity potential and its component of centrifugal force inside the ellipsoidal planet
Authors:   Lviv Polytechnic National University, Fys M. M , Zazuliak P. M ,   Lviv Polytechnic National University, Sohor A. R. ,   Lviv Polytechnic National University
Published: October 2022

A method for determining the gravitational potential of a celestial body whose surface is a sphere or ellipsoid with an abrupt mass distribution function is proposed. For these cases, the formulas for determining the internal potential and gravity are obtained. The calculations performed according to these formulas make it possible to analyze the contribution of the ellipticity of the planet to the value of its internal potential and compare it with the magnitude of the centrifugal force for the planets of the Earth group (Earth, Mars, Venus) and the Moon.
From the history of space research in Ukraine. 1. The performance of space research as of 1991 year
Authors:   Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Yatskiv Ya. S.
Published: October 2022

The article displays the material of 1991 from the author’s archive, which is devoted to the problems of space research arrangement and the space industry authority in independent Ukraine. A brief description of the space research level in Ukraine at that time is given. The active participation of Ukraine in the activity of international organizations and the implementation of USSR space programs are highlighted. The significant achievements and acquirements of scientific and design teams in the space research branch are emphasized. Among them, there were the rocket design center DB “Pivdenne” (now — Yangel Yuzhnoye State Design Office), E. O. Paton Electric Welding Institute of NAS of Ukraine, and many other enterprises and scientific institutions in Ukraine. In new conditions, under the newly acquired independence, the formidable task of preserving the aerospace industry of Ukraine arose. Within this task, it was necessary to preserve scientific and developing potential and to provide perspectives for scientific and technical progress. All this was possible only within the framework of the concept that had to be developed and which would contain the main goals of the national politics of Ukraine as an independent state in the branch of exploration and exploitation of space. It was necessary to create the aerospace agency of Ukraine for the coordination of space programs and to develop a law to regulate its activities. One more task was to adopt the state program of space exploration by the Verkhovna Rada, the program, which had to provide for the progress of fundamental and applied space research.
The readiness of the population of Ukraine to accept a progressive taxation system
Authors: Lavrinenko Nataliia
Published: October 2022

The article analyzes the degree of rapprochement of the Ukrainian state to the welfare state. Particular attention is paid to considering the degree of adoption by the population of Ukraine of the principle of progressive taxation as one of the possible means of reducing social inequality in society. The empirical basis used to analyze public opinion on this issue is the annual monitoring surveys conducted by the Institute of Sociology of the National Academy of Sciences of Ukraine and data from the module "Social Inequality" under the International Social Research Program (ISSP, 2019). Despite the fact that almost all respondents believe that the income gap between rich and poor is too large in Ukraine and that high-income people have to pay "much higher taxes", the introduction of progressive taxation is now not initiated by political leaders or broad-based masses of the population. In general, it can be concluded that not many respondents are aware of the internal content of progressive taxation, only a quarter of them choose the most important principle for this type of tax: "The state should promote the well-being of as many people as possible," it is this meaning that explains and justifies the need to introduce progressive taxation in Ukraine. Such ambivalence of the consciousness of the population is also manifested in the adherence to the principles of government, which focus on individualism and libertarian development of the country's economy and which are poorly combined with the introduction of progressive taxation. In Ukraine, political parties are mostly organized under a certain oligarchic politician and financed by him, so the introduction of progressive taxation is contrary to their business interests and is generally ignored. It is concluded that the smoothing of social inequality through the redistribution of income between different social groups through progressive taxation and the state budget has not yet become a principle of state social policy and conscious choice of the population.
Complexity Theory in sociological theorizing and metamodern culture — the contours of mutual legitimation
Authors: Bevzenko Liubov
Published: October 2022

The focus of the article is on two large-scale transformation processes that are currently taking place in the Western scientific and socio-cultural spaces. On the one hand, it is the emergence on the cultural horizon of a new macrocultural era, called Metamodern, on the other hand — the transformation in the paradigm field of Western science and the emergence of a paradigm of complexity (complexity theory). The statement is argued, that they are the different manifestations of the general large-scale socio-cultural and scientific tectonics and can serve as contours for mutual legitimacy and justification. The metamodern project captures the emergence of a new worldview in Western culture, which is characterized by a new sincerity, openness, holism in contrast to postmodern alienation, irony and sсepticism. In terms of experiencing the I-World relationship, the logic of cultural progress from Tradition to Metamodern can be described as a movement from complete immersion of the Self in the World (Tradition), through confrontation and struggle between the Self and the World (Modern), chaos of the I (multiple identity) and the World (current modernity) in the postmodern era, to a new dialectical combination of the I and the World in the Metamodern era. Complexity Theory in its sociological theoretical proposals can offer a parallel view on the process of changing cultural epochs, but through the prism of transforming the dominant mechanism of change and maintenance of social order, emphasizing the existence of two such mechanisms — organizational one and self-organizational one. The logic of changes in this dominance leads us from Tradition (self-organization), through Modern (organization), and Postmodern (chaos, no domination, the mutual distancing) to Metamodern — dialectics, tense unity of organization and self-organization. In socio-cultural terms, it looks like a dialectic of modernity (rationality, purposefulness, result, organization) and tradition (myth, game, process, self-organization), and at the level of basic experience of the world as a dialectic of acute experience of one's self combined with the experience of its unity with the world. It is at this point that the metamodern project and the paradigm of complexity in its sociological interpretation do meet. Here, they can give each other legitimizing support.
Between public and private: homo- and bisexual men in urban agglomerations of Donetsk oblast as a local pre-modern community
Authors: Kasianczuk Maksym , Leszczynski Yevhen , Trofymenko Olesia
Published: October 2022

The article is devoted to the discussion of the ratio of the public and private, which characterizes the live of homosexual and bisexual men in the urban agglomerations of Donetsk region. In the research, the authors examined the boundaries of privacy, such as intrusion into privacy by family, neighbors, and the ability to exist in a safe environment. Donetsk region is characterized by significant distances between the major urban agglomerations, which in its turn leads to relative mutual isolation of local communities, that in its turn contributes to their weak involvement in the activity of the non-governmental associations of citizens (in particular, in the case of the studied community such associations play a paramount role in the access to public health services). The proposed study is based on the hypothesis of non-congruence of the norms of the represented by public organizations "open world" and "small society" of local communities. The concept of the "small society" originates in the concept of "incomplete modernism", i.e. characterized by poorly developed institutionalization, and social norms of the "small society" are congruent with the norms characteristic to mafia clans. The private in the study is treated as an area free from interference. On the other hand, the public sphere in the understanding of the modern era is one where there is a primacy of impersonal and written procedures over the personalized relationships of specific actors. The authors emphasize that if a prejudice against the backward social groups, in particular LGBT people, is a studied phenomenon, the separation of the private and public life of the representatives of local communities, as well as the lack of regulatory mechanisms are much less studied. An important result of the study is that a weak separation of the public and private in the life of a person from the local community shows that such a community can be described as a premodern one. At the same time, the transparency of the boundaries between the public and private forces a person to look for the ways to hide from the excessive attention of others, and often this way is to live on the margins, i.e. among those whom society prefers not to notice. The study was realized in 2009–2010. And unfortunately, these areas are now inaccessible to sociologists. However, the obtained results, being comparable with the facts from the literature, including those obtained from the material of other territories and communities, may indicate the prevalence of such phenomena and, therefore, become the basis for further research.
Learner agency in the context of innovative learner environment: its conceptualization and theoretical basis
Authors: Humeniuk Viktoria
Published: October 2022

The centrality of learner agency notion, as an indicator of school learning environment transformation, implies the necessity of its conceptualization by the academics. The concept of learner agency is being elaborated following the rails of sociological definition of agency, which puts this notion in the procedural field of interaction with structural and cultural factors. Two theoretical perspectives — social cognitive theory of Bandura and social morphogenesis theory of Archer — form the basis for understanding the notion of learner agency, defined in the framework of a given theoretical research. The key features of learner agency concept are its emergent and temporal character, as well as agent’s personal identity level. Such understanding of learner agency requires from school learning environment: a) to coordinate the learning process with learners’ different time horizons in order to enable learning process taking into account past experience, future plans and aspirations, and present knowledge and skills’ level; b) to provide the possibility, firstly, for Self-knowledge, Self-identification, and, afterwards, for realization of learners’ individual peculiarities and interests throughout the whole learning process; c) to maintain a conducive mode of learners’ interaction with both structural and cultural factors of learning environment.