bluuebunny/crossref_metadata_2025 huggingface dataset:
Combining Satellite Images and the Hydraulic Engineering Archive to Map the Processes of Reservoir Construction in Xinjiang
Authors: Li Shuangshuang , Li Junli , Du Weibing , Liu Shuaiqi , Wang Haoyu , Jin Jingyu
Published: January 2024

Reservoirs are essential hydraulic facilities for water resource allocation in Xinjiang. Since the 1950s, many reservoirs have been constructed for oasis water resource utilization in Xinjiang, enhancing the storage capacity of water resources. There are a few intact and open reservoir archives containing both geolocations and hydraulic attributes, such as the reservoir completion year, which can facilitate our understanding of the correlation between hydraulic engineering and oasis expansion. This paper mapped all the reservoirs of Xinjiang using Sentinel-2 MSI images from 2022. It associated their attributes with the reservoir’s extent, such as the capacity, area, complete year, altitude, etc., by consulting historical almanac data to establish a full elemental dataset with both geographic and attribute information. Furthermore, the spatial variability and historical process of the reservoirs were discussed against geomorphic information and oasis evolution. The results showed that 804 reservoirs were mapped cumulatively in Xinjiang up to 2022, and 1960–1980 and 2005–2010 are the rapidly developed periods. The construction history of the reservoirs indicates that reservoirs’ locations have the spatial tendency to shift from being in oasis plain areas to mountainous areas, and the newly built reservoirs showed a trend of miniaturization in area and maximization in volume.
Application of Dynamic Mode Decomposition to Characterize Temporal Evolution of Plantar Pressures from Walkway Sensor Data in Women with Cancer
Authors: Seo Kangjun , Refai Hazem H. , Hile Elizabeth S.
Published: January 2024

Pressure sensor-impregnated walkways transform a person’s footfalls into spatiotemporal signals that may be sufficiently complex to inform emerging artificial intelligence (AI) applications in healthcare. Key consistencies within these plantar signals show potential to uniquely identify a person, and to distinguish groups with and without neuromotor pathology. Evidence shows that plantar pressure distributions are altered in aging and diabetic peripheral neuropathy, but less is known about pressure dynamics in chemotherapy-induced peripheral neuropathy (CIPN), a condition leading to falls in cancer survivors. Studying pressure dynamics longitudinally as people develop CIPN will require a composite model that can accurately characterize a survivor’s gait consistencies before chemotherapy, even in the presence of normal step-to-step variation. In this paper, we present a state-of-the-art data-driven learning technique to identify consistencies in an individual’s plantar pressure dynamics. We apply this technique to a database of steps taken by each of 16 women before they begin a new course of neurotoxic chemotherapy for breast or gynecologic cancer. After extracting gait features by decomposing spatiotemporal plantar pressure data into low-rank dynamic modes characterized by three features: frequency, a decay rate, and an initial condition, we employ a machine-learning model to identify consistencies in each survivor’s walking pattern using the centroids for each feature. In this sample, our approach is at least 86% accurate for identifying the correct individual using their pressure dynamics, whether using the right or left foot, or data from trials walked at usual or fast speeds. In future work, we suggest that persistent deviation from a survivor’s pre-chemotherapy step consistencies could be used to automate the identification of peripheral neuropathy and other chemotherapy side effects that impact mobility.
Formal Assessment of Agreement and Similarity between an Open-Source and a Reference Industrial Device with an Application to a Low-Cost pH Logger
Authors: Bataka Evmorfia P. , Maletsika Persefoni , Nakas Christos T.
Published: January 2024

Open-source devices are nowadays used in a vast number of research fields like medicine, education, agriculture, and sports, among others. In this work, an open-source, portable, low-cost pH logger, appropriate for in situ measurements, was designed and developed to assist in experiments on agricultural produce manufacturing. Τhe device was calibrated manually using pH buffers for values of 4.01 and 7.01. Then, it was tested by manually measuring the pH from the juice of citrus fruits. A waterproof temperature sensor was added to the device for temperature compensation when measuring the pH. A formal method comparison process between the open-source device and a Hanna HI9024 Waterproof pH Meter was designed to assess their agreement. We derived indices of agreement and graphical assessment tools using mixed-effects models. The advantages and disadvantages of interpreting agreement through the proposed procedure are discussed. In our illustration, the indices reported mediocre agreement and the subsequent similarity analysis revealed a fixed bias of 0.22 pH units. After recalibration, agreement between the devices improved to excellent levels. The process can be followed in general to avoid misleading or over-simplistic results of studies reporting solely correlation coefficients for formal comparison purposes.
Comparison of Two Models of Distance Education for Lifelong Learning in China
Authors: Chen Liping , Chen Huimin , Zeng Kaifu
Published: January 2024

Distance education has an important role in advancing lifelong learning. In China, there are two types of providers for distance education, open universities (OUs) and Institutes of Distance Education affiliated to regular universities (IDEs). IDEs are increasing because of technology development. This study compared OUs and IDEs in China from three aspects, including development goals, decision making on enrollment, and learning experience. Through corpus analysis and interviews, this study found that although the policy orientation of OUs and IDEs is different, their actual functions are the same. This is a phenomenon of institutional isomorphism, and government plays an important role in this convergence.
The ESG Patterns of Emerging-Market Companies: Are There Differences in Their Sustainable Behavior after COVID-19?
Authors: Gonzaga Barbara Rocha , Klotzle Marcelo Cabus , Brugni Talles Vianna , Rakos Ileana-Sorina , Cioca Ionela Cornelia , Barbu Cristian-Marian , Cucerzan Teodora
Published: January 2024

We aim to map the ESG patterns of emerging-market companies from 2018 to 2021 in order to determine whether the COVID-19 pandemic exerted any influence on sustainable corporate behavior. Thus, the ESG performances were assessed by employing the Kohonen Self-Organizing Map (also known as the Kohonen neural network) for clustering purposes at three levels: (i) ESG overall, including country and sectoral perspectives; (ii) ESG thematic; and (iii) ESG four-folded (stakeholder, perspective, management, and focus strategic views). Our results show that emerging-market companies focus their ESG efforts on social and governance issues rather than on environmental. However, environmental and social behavior differ more acutely than governance behavior across clusters. The analyses of country-level ESG performance and that of eleven market-based economic sectors corroborate the geographic and sector dependence of ESG performance. The thematic-level analysis indicates that operational activities and community issues received more attention, which suggests that emerging-market companies address distinct ESG topics according to their particularities and competitiveness. Furthermore, our empirical findings provide evidence that the ESG behavior of companies has changed over the course of the COVID-19 pandemic. Thus, our findings are relevant to policy makers involved in regulating ESG disclosure practices, investors focused on enhancing their sustainable investment strategies, and firms engaged in improving their ESG involvement.
Sustainable Space Travel: What Can We Do in Education from Economic and Environmental Perspectives?
Authors: Wu Yize , Peng Kang-Lin , Yao Yijing , Guo Yanping
Published: January 2024

Space travel began in 2001 and became popular in 2021 because of commercial operations. With the development of space technology and commercialization, like re-launchable rockets used to travel to space in recent years, hawse have gradually entered the space era. However, the space industry causes massive emissions, inducing some opposition to its development. It is essential to investigate the attitude of residents toward space travel and balance the pros and cons of sustainability. A quantitative analysis was adopted to test two models based on duality theory. The data were obtained from 284 samples from various regions of China and analyzed using partial least squares structural equation modeling (PLS-SEM). The results show that the two-factor model of economic development conflicted with environmental protection. However, study two indicates that educational interventions can facilitate sustainable space travel because they mediate the relationship between economic and environmental factors.
Investigating Factors Influencing Students’ Engagement in Sustainable Online Education
Authors: Lasekan Olusiji Adebola , Pachava Vengalarao , Godoy Pena Margot Teresa , Golla Siva Krishna , Raje Mariya Samreen
Published: January 2024

Due to the COVID-19 pandemic, there has been a rapid shift from traditional classroom-based education to sustainable online classrooms. This has brought attention to the importance of comprehending the intricacies of students’ engagement during virtual learning. Drawing upon the concept of community of inquiry in cognitive, social, and teaching presence, a mixed-methods approach involved data collected via a structured questionnaire administered to 452 university students to identify the factors that influence students’ participation during online classes. Through the application of the CHAID (Chi-Squared Automatic Interaction Detection) decision tree algorithm, the quality of course content is identified as a cognitive predictor of students’ engagement. It is worth mentioning that a significant proportion of students, specifically 61.7%, demonstrated a considerable degree of engagement with faculty content due to its high quality. With respect to the role of social presence, possession of a designated private space boost (69.2%) and requiring students to use their webcams are found to be critical for students’ engagement. Lastly, teaching presence as a factor in enhancing students’ engagement is demonstrated by promoting interactive classrooms and providing rapid feedback to students by teachers. The findings demonstrate the importance of teachers’ quality course material, interactive classes, and the benefits of a physical environment free from distractions for optimizing students’ engagement.
How Can We Design Policy Better? Frameworks and Approaches for Sustainability Transitions
Authors: Tomai Maria , Ramani Shyama V. , Papachristos George
Published: January 2024

The literature on socio-technical transitions offers a wide range of frameworks and approaches to conceptualise and steer sustainability transitions. However, the complex nature of transition processes, along with the weak correspondence between the transitions literature and policy design, make their joint application rather challenging. In response, this paper proposes a conceptual framework to inform actors managing a system or organisation in a transition process about the steps to follow, from the initial representation of the problem to the formulation of the interventions, and their eventual evaluation for further refinement. This framework is built from an integrative review of the sustainability transitions literature, incorporating state-of-the-art approaches and frameworks to guide policy design. It aims to advance the operationalisation and orientation of policies to accelerate sustainability transitions through a three-phased approach: (i) baseline assessment of systemic challenges, (ii) targets visioning and pathways design, and (iii) implementation and evaluation of policy interventions. The role of the most salient frameworks espoused in the literature is detailed and integrated into the conceptual framework so that transition actors are equipped with the necessary knowledge and tools to design effective policies for the realisation of their sustainability goals.
Using Social Media Data to Research the Impact of Campus Green Spaces on Students’ Emotions: A Case Study of Nanjing Campuses
Authors: Wang Ao , Meng Ziran , Zhao Bing , Zhang Fan
Published: January 2024

Campus green space, as a component of urban green space and the main natural place for college students’ daily contact, has a subliminal effect on their mental health. This study aims to investigate the degree of influence of campus green space on college students’ emotions as well as the main indicators of influence and other scientific issues. Taking the campus green spaces of 44 college campuses in Nanjing as the object of the study, with the help of social media data to research the issue of green spaces and emotional preference, we conducted a difference analysis, constructed an individual-time, double fixed-effects regression model and obtained the corresponding results: (1) significant seasonal and individual differences existed in all green space indicators across the 44 campuses; (2) a significant positive correlation existed between each of the campus green space indicators and college students’ positive emotions; (3) compared with the regression results of the data prior to the New Crown Pneumonia Outbreak (COVID-19), college students’ green sensitivity increased substantially during the outbreak control period, and the health benefits of the campus green spaces were more significant.
Analysis of Supersonic Flows inside a Steam Ejector with Liquid–Vapor Phase Change Using CFD Simulations
Authors: Charton Hugues , Perret Christian , Phan Hai Trieu
Published: January 2024

In this work, different CFD models to compute flows inside a steam ejector were investigated. The results were compared to the analytical models as well as the experimental results from the literature. All the simulations gave realistic results from the hydrodynamic perspective with a relative error of the entrainment ratio between 25% and 40% compared to reference experimental data. However, an analysis of the temperature profiles showed that only realistic results from the thermodynamic perspective were given by multiphase calculations. The first multiphase model tested was the so-called Wet-Steam model from ANSYS Fluent. This model gave inconsistent results for the steam ejector CFD simulation due to the physical boundaries of this model. The second model tested was the Eulerian mixture model, which gave the most realistic results in terms of the physical conditions of the liquid and vapor phases inside the ejector. It also showed that the phase change could have a significant impact on the value of the critical output pressure as a way to improve the performance of the ejector.
Analysis of Pyrrolizidine Alkaloids in Stingless Bee Honey and Identification of a Botanical Source as Ageratum conyzoides
Authors: Hungerford Natasha L. , Zawawi Norhasnida , Zhu Tianqi (Evonne) , Carter Steve J. , Melksham Kevin J. , Fletcher Mary T.
Published: January 2024

Stingless bee honeys (SBHs) from Australian and Malaysian species were analysed using ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) for the presence of pyrrolizidine alkaloids (PAs) and the corresponding N-oxides (PANOs) due to the potential for such hepatotoxic alkaloids to contaminate honey as a result of bees foraging on plants containing these alkaloids. Low levels of alkaloids were found in these SBHs when assessed against certified PA standards in targeted analysis. However, certain isomers were identified using untargeted analysis in a subset of honeys of Heterotrigona itama which resulted in the identification of a PA weed species (Ageratum conyzoides) near the hives. The evaluation of this weed provided a PA profile matching that of the SBH of H. itama produced nearby, and included supinine, supinine N-oxide (or isomers) and acetylated derivatives. These PAs lacking a hydroxyl group at C7 are thought to be less hepatoxic. However, high levels were also observed in SBH (and in A. conyzoides) of a potentially more toxic diester PA corresponding to an echimidine isomer. Intermedine, the C7 hydroxy equivalent of supinine, was also observed. Species differences in nectar collection were evident as the same alkaloids were not identified in SBH of G. thoracica from the same location. This study highlights that not all PAs and PANOs are identified using available standards in targeted analyses and confirms the need for producers of all types of honey to be aware of nearby potential PA sources, particularly weeds.
TDP-43 and Alzheimer’s Disease Pathology in the Brain of a Harbor Porpoise Exposed to the Cyanobacterial Toxin BMAA
Authors: Garamszegi Susanna P. , Brzostowicki Daniel J. , Coyne Thomas M. , Vontell Regina T. , Davis David A.
Published: January 2024

Cetaceans are well-regarded as sentinels for toxin exposure. Emerging studies suggest that cetaceans can also develop neuropathological changes associated with neurodegenerative disease. The occurrence of neuropathology makes cetaceans an ideal species for examining the impact of marine toxins on the brain across the lifespan. Here, we describe TAR DNA-binding protein 43 (TDP-43) proteinopathy and Alzheimer’s disease (AD) neuropathological changes in a beached harbor porpoise (Phocoena phocoena) that was exposed to a toxin produced by cyanobacteria called β-N-methylamino-L-alanine (BMAA). We found pathogenic TDP-43 cytoplasmic inclusions in neurons throughout the cerebral cortex, midbrain and brainstem. P62/sequestosome-1, responsible for the autophagy of misfolded proteins, was observed in the amygdala, hippocampus and frontal cortex. Genes implicated in AD and TDP-43 neuropathology such as APP and TARDBP were expressed in the brain. AD neuropathological changes such as amyloid-β plaques, neurofibrillary tangles, granulovacuolar degeneration and Hirano bodies were present in the hippocampus. These findings further support the development of progressive neurodegenerative disease in cetaceans and a potential causative link to cyanobacterial toxins. Climate change, nutrient pollution and industrial waste are increasing the frequency of harmful cyanobacterial blooms. Cyanotoxins like BMAA that are associated with neurodegenerative disease pose an increasing public health risk.
Generalization of the Schrödinger Equation for Open Systems Based on the Quantum-Statistical Approach
Authors: Zloshchastiev Konstantin G.
Published: January 2024

Within the framework of the quantum-statistical approach, utilizing both non-Hermitian Hamiltonian and Lindblad’s jump operators, one can derive various generalizations of the von Neumann equation for reduced density operators, also known as hybrid master equations. If one considers the evolution of pure states only, i.e., disregarding the coherence between states and spontaneous transitions from pure to mixed states, then one can resort to quantum-mechanical equations of the Schrödinger type. We derive them from the hybrid master equations and study their main properties, which indicate that our equations have a larger range of applicability compared to other generalized Schrödinger equations proposed hitherto. Among other features, they can describe not only systems which remain in the stationary eigenstates of the Hamiltonian as time passes, but also those which evolve from those eigenstates. As an example, we consider a simple but important model, a quantum harmonic oscillator driven by both Hamiltonian and non-Hamiltonian terms, and derive its classical limit, which turns out to be the damped harmonic oscillator. Using this model, we demonstrate that the effects of dissipative environments of different types can cancel each other, thus resulting in an effectively dissipation-free classical system. Another discussed phenomenon is whether a non-trivial quantum system can reduce to a classical system in free motion, i.e., without experiencing any classical Newtonian forces. This uncovers a large class of quantum-mechanical non-Hamiltonian systems whose dynamics are not determined by conventional mechanics’ potentials and forces, but rather come about through quantum statistical effects caused by the system’s environment.
Reply to Castro-Orgaz, O.; Hager, W.H. Comment on “Stilmant et al. Flow at an Ogee Crest Axis for a Wide Range of Head Ratios: Theoretical Model. Water 2022, 14, 2337”
Authors: Erpicum Sebastien , Stilmant Frédéric , Peltier Yann , Archambeau Pierre , Dewals Benjamin , Pirotton Michel
Published: January 2024

The Authors thank the Discussers for their valuable and detailed comment on the paper [...]
Matlab en las aplicaciones de la matemática
Authors: Velasquez-Alarcón Jorge David , Mendez-Vergaray Juan , Flores Edward
Published: January 2024

El Matlab es un software que ayuda a promover la investigación mediante el procesamiento de imágenes; es por ello, que el objetivo de esta indagación fue analizar las aplicaciones del Matlab en el aprendizaje de la matemática, geometría, álgebra y ecuaciones diferenciales. En la revisión sistemática de enfoque cualitativo, se utilizó el análisis documental de artículos científicos; la búsqueda se realizó en la base de datos Scopus, para lo cual se realizó el filtrado respetando la declaración PRISMA; además, se consideró los criterios de inclusión y exclusión; el período de búsqueda fue en el rango 2013-2022. Se obtuvieron 30 artículos que cumplieron con las características para el estudio. Se determinó la efectividad del software MATLAB en el aprendizaje de la matemática y otras áreas del conocimiento. Se concluye su utilidad en el campo académico para realizar gráficas, cálculo de matrices grandes y la solución de diferentes ecuaciones diferenciales.
ОСНОВНІ ІНСТИТУТИ ДОЗВІЛЛЄВОЇ СФЕРИ У КНР
Authors: Ціхуей Ван , Денисенко А. О.
Published: January 2024

Актуальність зазначеної проблеми полягає в тому, що в умовах реформування сфери освіти, вимушеного всесвітнього дистанційного навчання молоді під час пандемії, впровадження інноваційних виховних технологій для поліпшення освітньо-культурного процесу, розвитку цивілізації загалом (комп’ютеризація, цифровізація, коннект в Інтернет-мережі тощо) постає питання організації цікавого, змістовного, корисного, різнобічного, непримусового дозвілля молодого покоління. Які інститути дозвіллєвої сфери існують у КНР, на що спрямовані, які задачі виконують і чи є цікавим досвід організації дозвілля молоді у китайському суспільстві для світової практики – усі ці питання є актуальними і цікавими сьогодні для науково-педагогічної спільноти.
Мета статті – виокремити основні інститути сфери дозвілля молоді, які діють в КНР. Завдання статті – розкрити значущість основних інститутів дозвілля китайського суспільства, порушити питання перед учительською спільнотою щодо пошуку ефективних і цікавих сфер дозвілля, виявлення проблем щодо організації дозвілля молоді в сучасних умовах для поліпшення освітнього процесу в цілому.
У результаті проведення наукового дослідження виокремлена багата, різноманітна інституція сфери дозвілля молоді КНР: клуби, будинки культури, будинки народної творчості, бібліотеки, музеї, кінотеатри, філармонії, концертні зали, палаци дитячої та юнацької творчості, а також розважальні заклади: клуби, паркові комплекси, стадіони, басейни і спортивні майданчики, навчальні заклади різних рівнів, зокрема загальноосвітні та професійно-технічні установи, а також заклади вищої освіти. Інститути дозвілля в Китаї є не тільки ключовими аспектами розвитку культурного та освітнього середовища, але й важливими соціальними установами для формування повноцінної особистості дитини. Музеї і бібліотеки не лише зберігають і презентують культурну спадщину, але й створюють інтерактивне середовище для творчого розвитку. Спортивні секції, клуби розвитку та інші інститути дозвілля активно сприяють фізичному, соціальному та емоційному розвитку учасників Окреслена актуальна проблема для подальших наукових розвідок щодо організації дозвілля в умовах дистанційного навчання та карантинного режиму (пандемії).
ДОСЛІДЖЕННЯ СУТНОСТІ ПОНЯТТЯ «ІНТЕЛЕКТУАЛЬНА ЕЛІТА»
Authors: Chykharina K. І.
Published: January 2024

У контексті сучасного наукового дискурсу термін «інтелектуальна еліта» має різноманітне тлумачення, що вимагає докладного й детального його розуміння. Дане дослідження спрямоване на вирішення актуального питання відсутності консенсусу в визначенні термінологічних меж «інтелектуальної еліти» шляхом проведення комплексного дослідження. Актуальність даного дослідження полягає в широкому використанні терміну у наукових, соціальних та політичних дискурсах, поєднаному з відсутністю універсально прийнятого визначення. Саме прошарок інтелектуальної еліти нації стає рушійною силою у розвитку країни, докладає зусиль у вирішенні нагальних проблем суспільства та розробці стратегії для побудови майбутнього. Шляхом глибокого аналізу витоків поняття та складових концепції «інтелектуальна еліта», це дослідження спрямоване не лише на узагальнення існуючих точок зору, але й на розширення та збагачення дискусії, надання власного визначення поняття «інтелектуальна еліта». Основна мета статті полягає у поглибленому аналізі існуючих точок зору щодо визначення поняття «інтелектуальна еліта», з’ясуванні суті терміну «інтелектуальна еліта», вдосконаленні розуміння к ог орти осіб, що вважаються частиною цього прошарку суспільства. Дослідження критично взаємодіє з поглядами визначних у чених, надаючи багатогранне розуміння функцій т а якостей інтелектуальної ел іти. Результати цього дослідження сприяють більш детальному виз на ченню поняття « інтелектуальна еліта » , розумінню впливу цього прошарку на суспільний прогрес. Методи дослідження, використані в роботі, включають: огляд літератури, контент аналіз, синтез, уз агальнення, розробку концептуального каркасу. Таким чином, бул о проведено комплексний огляд існуючих досліджень прошарку інтелектуальної еліти , проаналізовано здобутки вчених у царині визначення цього терміну, окреслено ряд фунцій прошарку інтелектуальної еліти . Крім того, було розроблено концептуальний каркас, який си нтезує здобутки науковців, надаючи комплексне та структуроване розуміння поняттю «інтелектуальна еліта». Комплексна дефініція, запропонована в статті, допомагає більш глибоко зрозуміти сутні сть поняття, створює підґрунтя для подальших досліджень у цьому на прямі.
Ephemeral Windows: Limits and Possibilities in the Brazil-USA Relationship, Regarding the South Atlantic
Authors: Felix Marcelo Marcel , de Amorim Wellington Dantas
Published: January 2024

The South Atlantic is a region that has been receiving growing attention, due to the possibilities of changing its geopolitical balance, mainly due to the increase in presence of China and, to a lesser extent, Russia. Having Given the changing trend of the international configuration, exemplified by real Inter-and Intra-state conflicts (Ukraine, Middle East, African regions) and potential (South Sea China, Central Asia, Caucasus), what would be the possibility of the Brazil increases its capacity to project power in region, if by chance this clashed with the interests of the naval hegemonic power (USA)?
From the historical approach of two situations in which Brazil achieved positive arrangements with the USA, in amid changing international configurations, sought to establish an analytical standard from which some conclusions were established about the Current and future South Atlantic.
Influence of Intellectual Capital and Personal Growth on Organizational Performance in Micro, Small and Medium Enterprises
Authors: Faiz Deva Nailul , Pratama Bima Cinintya , Dirgantari Novi , Hapsari Ira
Published: January 2024

This research aims to test the application of organizational performance to MSMEs in Banyumas, Cilacap, and Brebes Regencies by considering aspects of human capital, structural capital, customer capital, and personal growth. This research used a sample of 200 MSME respondents from the Banyumas, Cilacap, and Brebes Regencies. The sampling was calculated using the Slovin Technique. The population used in this research was 19,044 MSMEs in the Banyumas, Cilacap, and Brebes Regencies. The analytical tool used in this research is Smart-PLS, using an inner model, an outer model, and hypothesis testing. The outer model is used for validity and reliability tests. Inner models were carried out for R-square and F-square tests. Hypothesis testing is carried out through bootstrapping testing. This research shows that the variables human capital, structural capital, customer capital, and personal growth positively affect organizational performance. The implication resulting from this research is that MSME players must optimize their business potential by considering aspects of human capital, structural capital, customer capital, and personal growth to improve organizational performance in MSMEs
POROUS HOT AIR TEA DE-ENZYMING AND CARDING MACHINE UNDER GAS–SOLID COUPLING CONDITIONS: NUMERICAL SIMULATIONS AND PERFORMANCE TESTING
Authors: BI Haijun , JIA Pengcheng , QIN Kuan , YU Lei , CAO Chengmao , XIA Dongsong , GUO Xinliang , LIU Yang , CHEN Bin , BI Yuzhen
Published: January 2024

The gas–solid coupling of a porous hot-air tea de-enzyming and carding machine was studied by means of computational fluid dynamics and discrete element coupling. In the numerical model, the discrete phase of tea particles was simulated using Rocky-DEM software, while the gas phase was described by ANSYS Fluent software. A mathematical model of the movement characteristics of tea particles in air was established according to the principle of fluid mechanics, to carry out dynamic analysis of tea particles’ movement process and derive how the motion of gas and tea particles is governed. Three sets of prototype tests were carried out on the basis of the design and simulation, and the average of their results taken. This showed that the hourly output of the test prototype was 3.89 kg/h, the bar-type rate was 89.14%, the de-enzyming moderation rate was 91.67%, and the average value of the measured effective operating temperature of the pot slot was 189 °C. The performance of the prototype was also tested and analyzed. After conducting a tea sensory evaluation expert appraisal, the sensory evaluation indices of the prototype-processed tea satisfied all current market requirements, being superior to those of the conventional de-enzyming and carding machine. The quality of the finished tea also met the agronomic standards and the operational requirements of the de-enzyming and carding machine.
'Não seria o destino do foot-ball?'
Authors: Tonet Vinicius Garzon
Published: January 2024

Este artigo discute o livro O negro no foot-ball brasileiro (1947), de Mário Filho, colocando em evidência, em um primeiro momento, a crítica que o autor faz aos “saudosistas”. Esses seriam os detentores da memória oficial sobre o futebol e responsáveis por escamotear a contribuição dos negros na consolidação do esporte no Brasil. A partir dessa investigação e amparado pelas reflexões de Fernando Catroga sobre memória, historiografia e poder, o artigo propõe que Mário Filho elabora o seu livro como um contraponto à memória dos saudosistas, até então hegemônica, na disputa pelas visões sobre o passado. Um segundo movimento analítico explora as estratégias narrativas de Mário Filho na construção de seus argumentos. Para isso, utiliza considerações de Benedict Anderson sobre o processo de constituição imaginária das nações a fim de estudar como a história do futebol recebe, em O negro no foot-ball brasileiro, um sentido histórico unívoco a partir de um processo de “tradução cultural” de um esporte originalmente inglês em direção ao seu “abrasileiramento”. Por fim, o conceito proposto por Henrique Estrada Rodrigues de “ensaio de formação” é mobilizado para compreender a obra como partícipe de uma tradição intelectual que remonta às produções ensaísticas dos anos 1920 e 1930 e, por isso, comparações com pensadores como Gilberto Freyre e Sérgio Buarque de Holanda são feitas com o intuito de analisar como a carga positiva da miscibilidade, a aversão à forma fixa, a espontaneidade e a capacidade de improviso foram concebidas por Mário Filho como um caminho a ser seguido pelo Brasil para além dos muros dos estádios.
ciclo do carnaval nos campos de futebol de várzea paulistanos
Authors: Santos Alberto Luiz dos
Published: January 2024

Os campos de futebol de várzea de São Paulo/SP representam importantes lugares de encontro e sociabilidade da população, desde os bairros populares da cidade em transformação, nos meados do século passado, às quebradas periféricas da metrópole contemporânea. Legados de processos de apropriação do espaço para a prática do jogo, nas primeiras décadas do século XX, esses campos passaram a vincular, para além dos futebóis, múltiplas referências culturais que confluem para um sentido de pertencimento. Desta gama de práticas, significados e memórias, esse artigo se dedica às sonoridades destes lugares do futebol popular, com ênfase numa forma de expressão do samba de São Paulo enredada, historicamente, ao ciclo do carnaval e ao circuito do futebol varzeano: as batucadas de beira de campo.
Pengembangan Aplikasi Pose Detection untuk Asesmen Kemajuan Fisioterapi Pasien Pasca Stroke dari Jarak Jauh
Authors: Febry Putra Rochim  , Nugroho Anan , Sukamta Sri , Wafi Ahmad Zein Al , Fathurrahman Muhammad , Damayanti Amelia , Wardah Hildatul
Published: January 2024

Assessment has an important role in determining the diagnosis and subsequent treatment plan. In an effort to increase access and effectiveness of rehabilitation, this research aims to develop a mobile application that is able to report the results of post-stroke patient pose assessment remotely. Telemedicine approaches in post-stroke rehabilitation have become increasingly popular, allowing patients to access rehabilitation services remotely. This is especially beneficial for patients who live in remote areas or have limited mobility. Telemedicine also allows for real-time patient monitoring, allowing adjustments to rehabilitation plans as needed. The mobile app is designed to provide easy access to rehabilitation programs that can be tailored to individual patient needs. In addition to making access easier, this application is equipped with a monitoring feature that allows health professionals to follow patient progress in detail. Data collected from patients' daily exercise and activities provides valuable insight into their progress, which can be used in tailoring rehabilitation plans in real-time. The development of this mobile application technology has great potential to improve rehabilitation outcomes for post-stroke patients. Testing by three experts with two experts as healthy patients and stroke patients, as well as one patient who acts as a medical personel to monitor, shows that from the graph, healthy patients tend to be consistent. On the other hand, post-stroke patients tend to be inconsistent. These results indicate that this application is effective for identifying patient movements during the rehabilitation process. Although there are several obstacles, such as delays in predictions on some devices, this application has great potential to improve the quality of life of post-stroke patients. Thus, the development of a pose detection application for remotely assessing the progress of physiotherapy in post-stroke patients has great potential in improving rehabilitation outcomes. The app facilitates patient access to appropriate, personalized and effective care, while providing medical personnel with objective and accurate data for monitoring and adjusting rehabilitation plans. This is a significant step in advancing the care of post-stroke patients.
Przemoc symboliczna
Authors: Flam Helena , Beuzamy Brigitte
Published: January 2024

The article focuses on everyday nationalism and its multifaceted connections to symbolic violence exercised by natives in relationship to migrants in eight European countries. The analysis draws on focus group interviews conducted with migrants in England, France, Germany, Austria, Italy, Poland, Cyprus, Sweden — within a comparative project sponsored by the EU between 2002 and 2006, and bearing the title: “The European Dilemma: Institutional Patterns and Politics of Racial Discrimination”.
Wstyd i honor jako wyznaczniki dobrego zachowania
Authors: Granada Aleksandra
Published: January 2024

The author looks at the dichotomy between shame and honor through references to traditional societies of the Mediterranean culture. Anthropological studies in the 1950–1980s define both concepts as morally determined social regulators. Emotions related to shame are etymologically feminine, those related to honor are masculine. Consequently, gender seems to determine what is moral. Therefore, one can venture that social expectations with regard to women evolve around notions related to shame: modesty (particularly sexual), passivity and submission. For men they evolve around notions related to honor: activism, courage and usefulness. In contemporary discourse this division translates into attaching women to the household related private sphere and placing men in the public politico-economic sphere. Such a distinction solidifies traditional social order whose role is to assist in proper functioning of the family.
Józef Chałasiński. O aktualności Jego myśli i jej przydatności do współczesnych badań nad awansem edukacyjnym
Authors: Borawska Beata
Published: January 2024

The article clearly demonstrates that, in spite of changes in time and context, Józef Chałasiński’s works still hold great value for the research on the educational advancement of rural youth. Polish rural youth followed divergent paths of social advancement, yet one of them has always led through education. Education has always played a crucial role in the attainment of high social positions. It has been pointed in such studies that for the rural youth higher education signifies acquisition of non-rural ideals. Rural migrations are selective in character: those who move to the cities tend to be more industrious and better educated which only reinforces the popular conviction about negative selection to the farming profession.
Lata 1959–1960 widziane oczyma łódzkiego socjologa. Na podstawie pamiętników Jana Lutyńskiego
Authors: Lutyńska Krystyna
Published: January 2024

The text contains excerpts of Jan Lutyński’s diary from the years 1959–1961. Professor Lutyński (1921–1988) describes the situation of sociological community in Łódź after political changes brought by the 1956 events. He writes about the struggles with censorship, about the distinction between private and public life and dilemmas brought by it, about students of sociology at the University of Łódź in 1959, and about the mood in the academe and the influence of the communist party (PZPR) on the faculty in those times.
Górnołużycka prasa wobec wojny na Ukrainie
Authors: Mieczkowska Małgorzata
Published: January 2024

The article is a selective analysis of the media of the Sorbian minority describing the war in Ukraine. The aim was to give an answer to the question of whether and how the aggression against Ukraine in 2022 was portrayed. An answer was sought to the question of whether the minority participates in helping refugees from Ukraine. How does it get involved at the local level, in its places of residence and work. An important element of the study was to demonstrate the multiple lines of action promoted in the media. The main information media of the Sorbs became a platform for rapid information about needs, risks, meetings for refugees and minorities in order to more effectively support Ukrainians and actively participate in their socialisation process in Lusatia in Germany.
Effects of destruction of Euglena
gracilis by ultrasonic cavitation
Authors: Azuma Yoshihito , Yamamoto Ken
Published: January 2024

Euglena gracilis has attracted attention because it contains the polysaccharide paramylon. In this study, we aimed to destruct E. gracilis by applying ultrasonic cavitation and to elucidate the mechanism. We also examined the breakdown of paramylon particles and attempted to extract paramylon nanofibers. It was suggested that the damage caused by ultrasonic waves was frequency dependent and influenced by the size ratio of the cell to cavitation bubbles, yield strength, and inhibition of cavitation bubble growth in suspension. It is also assumed that the cell destruction rate decreased because it was also dependent on the initial cell density, and an increase in the initial cell density resulted in a decrease in acoustic pressure. The fracture strength of the paramylon particles was much greater than the microjet stress at the acoustic power used in this study, and the paramylon particles did not fracture.
Research of the plasticizing binder type and quantity influence on the properties of pressed alumina­zirconia­silica refractories
Authors: Prymachenko V. V. , Shulyk I. G. , Mishnyova Yu. Ye.
Published: January 2024

Comparative research of the plasticizing binder type (technical lignosulfonate sodium aqueous solution, plasticizing additive on polycarbonate base aqueous solution, as well as technical lignosulfonate sodium and orthophosphoric acid (H3PO4) aqueous solutions mixtures in 3:1 and 1:1 ratio) and its quantity influence on the properties indexes of pressed alumina­zirconia­silica (AZS) refractories were carried out.

If necessary, the possibility of using any of the studied plasticizing binders for pressing AZS refractories was established. Each of the studied plasticizing binders ensures the receiving of AZS refractories with high indexes of properties. There is a slight tendency to improve the properties of unfired and fired samples of some compositions with binders from plasticizing additives on polycarbonate base aqueous solution and technical lignosulfonate sodium with H3PO4 aqueous solutions mixtures, compared to samples in which the binder is technical lignosulfonate sodium aqueous solution is observed. The best, according to the indicated tendency, is a plasticizing binder from technical lignosulfonate sodium and H3PO4 aqueous solutions mixture in 1:1 ratio. Binders from plasticizing additive on polycarbonate base aqueous solution, technical lignosulfonate sodium and H3PO4 aqueous solution mixture in 3:1 ratio, and technical lignosulfonate sodium aqueous solution are then placed. This tendency should be considered when choosing a plasticizing binder for pressing AZS refractories.

The raw material base for AZS refractories production has been expanded using the research results.
Dependence of the properties of castable samples from low­cement silicon carbide castable before and after heat treatment on the action of alkalis at 1300 °C
Authors: Martynenko V. V. , Shulyk I. G. , Savina L. K.
Published: January 2024

The main properties and alkali resistance of silicon carbide castable samples heat­treated at temperatures of 110 and 1000 °C were investigated in comparison with the chamotte product, which is used for the same purposes in lining thermal units in contact with an aggressive environment.

Samples of carbide­silicon castable after heat treatment at temperatures of 110 and 1000 °C were characterized by the following physical and chemical properties, respectively: wt. %: SiC — 84.60 and 79.70, Al2O3 — 13.65 and 13.60, CaO — 1.35 and 1.33; cold crushing strength — 42.2 and 67.5 N/mm2.

The thermal conductivity of a silicon carbide castable sample heat­treated at a temperature of 1000 °C was determined to be 8.20 W/(m·K) and its thermal shock resistance (950 °C — water) was determined to be > 20 heat cycles.

The studies of alkali resistance (to a mixture of alkalis Na2CO3 and K2CO3 in a ratio of 25:75) at a temperature of 1300 of carbide­silicon castable samples heat­treated at temperatures of 110 and 1000 °C in comparison with a sample of chamotte refractory, it was found that castable samples heat­treated at temperatures of 110 and 1000 °C are characterized by quite close alkali resistance (weight increase of 1.42 % and 1.5 %, respectively) and significantly higher (by ~ 4.3—4.5 times) alkali resistance than chamotte samples (weight increase of 6.5 %).

It was established that castable samples after heat treatment at a temperature of 1000 °C after interaction with alkalis were characterized by a 1.6 times higher cold crushing strength compared to a castable sample heat­treated at a temperature of 110 °C.

The study’s results made it possible to evaluate the performance of the silicon carbide castable in comparison with chamotte refractory during its operation in thermal units at consumers.
Special features of the structure of modifier of periclase­spinel materials with an increased thermal shock resistance
Authors: Borysenko O. M. , Logvinkov S. M. , Shabanova G. M. , Іshchenko А. М. , Arefiev V. О.
Published: January 2024

The main requirement for periclase­spinel refractories during their operation is the ability to multiple thermal cycling, which can lead to thermal absorption of stress in the refractory system. Therefore, resistance to thermal shocks is considered one of the key properties of the material for extending the service life of linings based on them. The structure of the modifier, which is included in the composition of periclase spinel materials, was investigated using X­ray phase and electron microscopic studies, and the influence of its structural features on the performance characteristics of the refractory was substantiated. The structural and phase features of the modifier were revealed, namely, polyphasic and the presence of metastable phases in the composition of the material, which is due to the presence of impurities and their easy ability to form orthosilicates and crystallize during cooling of the fired sample of the modifier, as well as the oxidizing gaseous firing medium due to the partial transition FeO → Fe2O3 with the formation of a pseudobrookite phase and magnesium ferrite, have a positive effect on the heat resistance of the modified periclase spinel material due to the branching of thermodynamic paths of structural and phase changes in the composition of the refractory in the heating—cooling cycles.
Penggunaan Instagram pada Generasi Z Sebagai Media Komunikasi dalam Membangun Personal Branding Ilustrator @Indahoei
Authors: Zain Azizah Aghniya , Dwivayani Kadek Dristiana
Published: January 2024

The rapid development of the times gave birth to communication in the digital world and the creation of various kinds of social media applications, one of which is Instagram. Instagram is a place for users to share photos and videos as well as share stories and interactions so that its users are used to build personal branding. Personal branding is a place for an individual to be able to shape his or her identity by showing personality and expertise which ultimately creates a public perception. Personal branding can be done on Instagram, where Instagram users are dominated by Generation Z. Various professions now need personal branding. Various professions now need personal branding, including illustrators. Indah Wijaya is one of the illustrators in Indonesia with the Instagram account name @Indahoei. This research aims to find out how the use of Instagram in Generation Z as a communication medium in building personal branding for illustrator @Indahoei. In this study, researchers used the theory of uses and gratifications. This research method uses descriptive qualitative methods and data collection techniques by conducting observations, interviews, and documentation. Based on the results of the study, the researcher found that Indah uses Instagram to generate income and show her work that will make the audience recognize so they want to use her services. Indah applies the concepts of personal branding that make her try to remain consistent and maintain her good name. Indah realizes that the content she uploads on Instagram inspires her followers, so Indah always tries to create quality content that can be enjoyed properly.