bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of methods for predicting the stability of preparatory workings in the mines of Western Donbas
Authors: Ruskikh V , Poimanov S , Filippov I
Published: November 2024

Purpose. Analysis of the effectiveness and feasibility of existing methods for predicting preparatory workings. Research methodology. The research was conducted using an analytical method (analysis, explanation, synthesis, comparison) and statistical data processing method. Research results. The conducted research allowed determining that the coal-bearing sedimentary massif of the Western Donbas, as a result of complex tectonic movements, is characterized by developed and intensive tectonic disturbances of a ruptural and plicative nature. The appearance of plicative disturbances in the hanging wall of the coal seam, accompanied by an increase in their thickness, leads to the concentration of stresses in the areas of disturbances caused by approaching the mining face. Regional plicative disturbances cause the formation of zones of anomalous activity in the intact mining massif. In addition to gravitational forces affecting the geological structure, tectonic stresses directed along the bedding plane are added to this phenomenon. Tectonic stresses are oriented in the direction of the main curvatures of the natural surface of rock deposition and depend on their magnitude. Geological deviations of various types are key indicators of anomalies in the tectonic environment and zones of reduced strength in an intact mining massif. These anomalies can result from the complex interaction of geological processes, including tectonic activity, water flow activity, and other natural factors. These deviations become fundamental factors contributing to the occurrence of gas-dynamic phenomena and rockfalls during the preparatory mining stage. Scientific novelty. The regularity of the interaction of geomechanical parameters of elements of the "layered massif – excavation support" system has been established. Practical significance. Studying methods for predicting the stability of preparatory workings allows for the development of effective excavation support systems according to geological conditions and prevents possible accidents and rockfalls in mining working areas.
Justification of rational parameters for thin seam extraction based on the study of energy characteristics of the coal cutting process by the executive body
Authors: Khorolskyi A , Zabolotna Y , Pochepov V , Medianyk V , Lapko V , Mamaikin O
Published: November 2024

Purpose. To develop a new approach for justifying rational parameters for mechanized thin seam extraction. Methodology. The approach was developed using a method of assessing the energy characteristics of the coal extraction process through mechanized means, specifically using longwall shearers. To determine the rational parameters, the primary energy characteristics were calculated, including: energy consumption for extracting 1 cubic meter of coal; benchmark consumption for extracting 1 cubic meter of coal; and overall extraction efficiency (the ratio of energy consumption to benchmark consumption). Findings. A new approach was proposed for rationalizing the parameters of coal extraction using longwall shearers. This involved applying the methodology for studying the energy characteristics of the extraction process. Based on the comparison of benchmark consumption and the consumption for extracting 1 cubic meter of coal, a rational application area for the most popular longwall shearers was identified. The study of the efficiency of the coal extraction process revealed that it is impractical to use drum shearers (KA80, KA200) in low thickness seams due to high energy consumption and limited adjustability of the executive body’s position in the longwall. It was also found impractical to use shearers designed for medium and high thickness seams (RKU10, RKU13) for low thickness seams due to low energy efficiency. Originality. A methodology was developed for evaluating the energy characteristics of longwall shearers depending on the type of executive body. Practical implications. The rational application area for longwall shearers on gently sloping seams was determined, as well as the overall efficiency of the coal extraction process using screw and drum executive bodies. It was established that modern extraction machines UKD400 and CLS-450 have relatively acceptable energy characteristics (with a generalized desirability criterion of 0.51–0.75, corresponding to satisfactory and good levels), but only within the specified passport characteristics range.
Prognostication of zones with variable physical and mechanical characteristics of soil massifs
Authors: Zuievska N , Shaidetska L , Kosenko T , Matviichuk I
Published: November 2024

Purpose. The use of geographic information systems, in particular Google Earth Pro and Golden Software Surfer, to predict and visualize changes in the geological structure and create 3D models of built-up areas in the central part of Kyiv. Methodology. The research methodology included several stages and an integrated approach to the analysis of man-made soils in the city of Kyiv. Field studies were carried out with soil sampling in the building area for laboratory analyzes with the degree of concentration of man-made sediments. Modeling and data analysis with the creation of 3D models of man-made soils in the Surfer software package with interpolation of field and laboratory research data into GIS to analyze the distribution of man-made soils. The results of the study were obtained. The results of the study emphasize the importance of an integrated approach to the analysis and management of man-made soils in the urban environment, which contributes to improving the safety and efficiency of construction processes in Kyiv. Based on the collected data, 3D models of man-made soils were created, which made it possible to visualize their distribution and assess the risks associated with construction in dense urban areas. Originality. A methodology for studying the distribution of geotechnogenic soils depending on their concentration has been developed. The dependencies of the distribution of pollution in depth on the building area of the Podilskyi district of Kyiv have been obtained. The use of geographic information systems for forecasting the distribution and volumes of soils with variable physical and mechanical characteristics is proposed. Using Google Earth Pro cellular data and creating a 3D model allows you to analyze the concentration of pollution by man-made soils in an urbanized area. Practical value. The results of the study allow for a better understanding of the geological structure of man-made soils and their impact on the bearing capacity of building foundations. This helps to avoid possible problems with the stability of buildings and increases the safety of building structures. The use of geographic information systems and 3D modeling makes it possible to conveniently and accurately predict the distribution of man-made soils on construction sites, which contributes to the optimization of design solutions and efficient use of resources.
Assessment of atmospheric air pollution in Dnipro city as a result of dust entrainment from the ash-disposal areasof Prydniprovsk TPP
Authors: Berezniak O , Borysovska O
Published: November 2024

Purpose. The purpose of this work is to assess the pollution of atmospheric air in Dnipro city as a result of dust entrainment from the ash-disposal areas of Prydniprovsk TPP. The methods. Assessment of atmospheric air pollution in the city of Dnipro as a result of dust entrainment from the ash-disposal areas of Prydniprovska TPP was carried out as follows: physical and chemical characteristics of the stored fly ash were determined; specific dust entrainment from the surface of dry beaches of ash-disposal areas under the most favorable conditions was determined; mathematical modeling of the spread of atmospheric air pollution of Dnipro city by suspended particles was carried out using UPCAP "ECO Center"program; a comparative assessment of dust entrainment reduction due to the gradual processing of the deposited fly ash was carried out. Findings. Almost 100% of the total mass of ash consists of particles smaller than 80 μm, the content of particles smaller than 10 and 2.5 μm is 27.7 and 8.2%, respectively. The main chemical compounds contained in ash are silicon dioxide, aluminum oxide, iron (III) oxide and carbon. The gross entrainment of substances in the form of suspended fine-grained solid particles from the surface of the dry beaches of the Prydniprovska TPP ash-disposal facilities is 18,654 tons per year. The area of atmospheric air pollution of Dnipro city by suspended particles is about 850 km2 and covers Samarskyi, Sobornyi, partly Industrialnyi and Shevchenkivskyi Districts. As a result of the implementation of a waste-free technology for the processing of fly ash with the utilization of the iron-containing fraction, the area of pollution can be reduced by 13.5 times up to 63 km2, the contamination zone in this case will cover underpopulated part of Samarskyi District of the city of Dnipro. Scientific novelty. A refined dependence of the particle size distribution of the mature Prydniprovsk TPP fly ash particles was determined for the further assessment of potential dust entrainment. For the first time, modeling of the distribution of fine-grained particles of fly ash of the Prydniprovsk TPP in the atmospheric air of the city of Dnipro was carried out, taking into account meteorological conditions, conditions of dust formation and particle size distribution. Practical implementation. The results of the research can contribute to reducing the level of atmospheric air pollution in the city of Dnipro. This will improve the quality of life of the local population and protect the natural environment from negative impacts. Research results can also be a basis for the development and implementation of technological solutions for the waste-free processing of stored fly ash with marketable products obtaining.
Development and testing of a stand for studying the dynamics of an inertial screen with two motor-vibrators
Authors: Zabolotnyi K , Shkut A
Published: November 2024

Purpose. To substantiate the design of a stand for studying the dynamics of transient modes of an inertial screen with two motor-vibrators and to develop a methodology for conducting a physical experiment to study the dynamics of the screen. The methods. To conduct a physical experiment, a laboratory stand was developed to study the dynamics of screens. The bench consists of an inertial screen with a piezoelectric acceleration sensor KD 35-2, a system of laboratory devices for acoustic and vibration measuring equipment Robotron, and a computer with installed software. The obtained data are analyzed using software that allows to display graphs of oscillations in different directions: vertical, horizontal and at an angle of 45. Findings. A stand for analyzing the dynamics of screens was developed and tested. The results show that the computer modeling data and physical measurements are consistent. The maximum amplitude of vertical vibrations in the center of the screen was 24.71 mm, horizontal displacements reached 18.6 mm, and amplitude vibrations at an angle of 45° – 26.41 mm. The average deviation between the experimental and modeled data does not exceed 9%, which confirms the accuracy of the calculations. The originality. This study presents for the first time a laboratory testbed for studying the dynamics of inertial two-drive screens using piezoelectric sensors and the Robotron vibrometry system. The uniqueness of the work lies in the development of a laboratory bench that allows for accurate measurement of amplitudes in real time, as well as the comparison of results with data from models developed in SolidWorks. Practical implementation. The results of the developed methodology for studying physical prototypes of inertial double-drive screens can be used to optimize the design of vibrating screens in industry. The proposed approach makes it possible to accurately assess the dynamic characteristics of screens and determine the optimal parameters of their operation, which helps to reduce energy consumption and increase the efficiency of the material sorting process.
Analysis of torsional properties of a rubber rope as a composite material in multilayer winding
Authors: Zabolotnyi K , Panchenko O , Polushyna M , Kovyrev M
Published: November 2024

Purpose. The main purpose of this study is to analyse the results of a theoretical study on the effect of the longitudinal stiffness of the rope on the mechanism of deformation of the winding body as a composite material on the basis of experimental data. The methods. The methodology is based on the analysis of scientific papers by leading experts in the field of mechanical engineering specialising in the development of hoisting machines with rubber-rope cables. The development of the model of torsional stiffness of the winding body of reel hoists was based on mathematical and physical modelling methods, including methods of planning a multifactorial experiment and statistical processing of experimental data. Findings. When solving the problem of determining the stiffness of the body of a rubber-rope winding, the physical model of its spool body was presented in the form of a rubber-metal hinge. After processing the results of the experiment to determine the parameters of the winding body, an analytical expression was obtained to calculate the torsional stiffness of the winding body of a rubber-rope cable. The originality. The regularities of the influence of the parameters of a rubber rope on the torsional stiffness of its winding body have been established. The stiffness of the winding body depends on its outer diameter quadratically, while the local stiffness is weak. With a small number of turns, the stiffness of the homogeneous body exceeds the local stiffness, but the total pliability is low. The risk of dynamic effects in a spool hoist during braking increases with a large number of turns, when the homogeneous body stiffness is much lower than the local stiffness. The total torsional stiffness of the winding body can be determined by the proposed formula with sufficient accuracy for dynamic analysis. Practical implementation. The developed mathematical model for determining the torsional stiffness of a rubber rope winding makes it possible to find such values of the parameters of a spool hoist that will avoid the danger of dynamic effects during emergency and operational braking of the device caused by the torsional stiffness of the winding body.
Energy-saving technology of silicate pressed material with use of micro-porous silica-earth raw materials
Authors: Liashok Y , Podkopayev S , Povzun O , Virych S , Kalynychenko V
Published: November 2024

Purpose. Research on the possibility of producing a silicate material that hardens under reduced parameters of autoclave processing, due to the introduction of natural zeolite into the raw material mixture. The methods. To solve the problems set in the work, following methods were used:generalization and analysis of theoretical and experimental data of domestic and foreign authors; analytical studies of raw materials (chemical, mechanical and physical-mechanical methods); laboratory experiment using physical and mechanical tests. The study of the properties of raw materials was carried out according to standardized methods. Findings. It has been proven that natural zeolite is an effective component of silicate pressed materials for reducing heat energy consumption during their autoclaving. It was established that with a low zeolite content, the compressive strength of lime-zeolite stone practically does not differ from the strength of limestone-sandstone. A study of the influence of the autoclave treatment regime on the strength of silicate pressed concrete, which was made using a lime-zeolite binder, was carried out. It has been experimentally confirmed that the strength-to-strength ratio of pressed silicate material on a lime-zeolite binder (compared to a similar pressed silicate material on a lime-sand binder) depends to a lesser extent on the water vapor pressure during autoclaving. The originality. The dependences of the compressive strength limit of samples-beams made of lime-zeolite binder at different mass ratios of lime:siliceous component, as well as the dependence of the compressive strength limit of silicate pressed materials on a lime-zeolite binder on water vapor pressure during autoclave processing. Practical implementation. The results of the research can be used at enterprises of the building materials industry in the production of silicate bricks. Replacing natural quartz sand with natural zeolite reduces the production cost of lime-zeolite binder, and the reduction of water vapor pressure during autoclaving of silicate pressed material on lime-zeolite binder reduces the consumption of high-value natural gas.
Exploring Students’ Feelings in the Initial Phase of a Community-Based Research Service-Learning Course: A Qualitative Approach Using Content Analysis
Authors: Bittner Janine , Kempchen Janina
Published: November 2024

The emotional experience of situations and interactions with other people plays an important role in teaching and learning processes and interacts with cognitive as well as motivational and intentional factors in the acquisition of knowledge. In our qualitative investigation, we explored participants’ experiences in the initial phase of a community-based research service-learning project that dealt with issues of social inequality, poverty and homelessness. We were particularly interested in the affective processes in the project’s planning phase and during the first meetings between community partners, homeless people and the participating students. After completing the course, we conducted guided qualitative online interviews with the course participants. The interviews were fully transcribed verbatim. We then coded and analysed the data using qualitative content analysis approach. It became apparent that the students were particularly anxious and apprehensive about working with vulnerable groups of people. This manifested itself in uncertainty, nervousness, fears and negative feelings. Regarding the collaboration with the community partners, the emotional situation varied among the students in the initial phase. We conclude that students’ fears, anxieties, and uncertainties in the planning phase of a service-learning or community-based research project should be taken seriously. A relaxed and positive atmosphere at the first meetings can be viewed as particularly important for project progression and the students’ future learning success.
Innovative Frameworks for Teacher Noticing: Video Insights into Pre-Service Trainee’s Practices
Authors: Threlfall Scott J
Published: November 2024

Teacher noticing is a fundamental aspect of effective teaching, yet its influence on instructional practice is not well understood. This paper presents an extended framework for teacher noticing, alongside two innovative assessment tools: the Initial Teacher Education Noticing Continuum (TEN) and the Noticing Observation Framework (NOF). Utilising a mixed-methods approach within an intrinsic case study involving nine pre-service trainee teachers, the research uncovered significant insights into the participants' professional vision. The TEN demonstrated notable sophistication in trainees' skills for selecting, reasoning, and responding, while the NOF revealed that noticing plays a crucial role in developing teacher competency. As the study progressed, the participants exhibited marked improvements in their teaching practices. These results underscore the importance of structured frameworks in elucidating the relationship between teacher noticing and effective instruction, offering valuable implications for teacher education programmes.
Percepção de adultos leigos sobre a importância da dentição decídua: Uma revisão integrativa
Authors: Silva Ana Karolaine Oliveira , Barreira Alice Kelly
Published: November 2024

O objetivo deste estudo foi revisar a literatura sobre a percepção de adultos leigos acerca da importância da dentição decídua, considerando o perfil sociodemográfico e o conhecimento de cuidados preventivos com a dentição. Para responder à questão, foram realizadas buscas nas bases de dados PubMed e BVS, no período entre os meses de Janeiro e Fevereiro de 2024, utilizando os termos do MeSH “Deciduous dentition”, “beliefs”, “myths” e “attitude” associados aos operadores booleanos AND e OR. Foram incluídos estudos que respondessem à pergunta norteadora, que envolvessem adultos leigos e publicados nos últimos 5 anos. As buscas iniciais resultaram em 49 artigos. Após a triagem e aplicação dos critérios de elegibilidade, compôs a amostra final 14 estudos. A maior parte dos estudos foi publicada na Índia e Arábia Saudita, entre os anos de 2019 e 2024, sendo avaliada por meio de questionários a percepção de pais ou responsáveis por crianças, gestantes e parteiras. O conhecimento dos adultos sobre saúde bucal é limitado e influencia de forma direta na saúde da dentição decídua e nos hábitos de higiene oral das crianças, mas no geral reconhecem a importância da dentição decídua. O perfil sociodemográfico possui ampla influência nesse aspecto, logo, responsáveis com maior grau de escolaridade e maior número de filhos apresentam melhores níveis de percepção acerca da importância. Já as pessoas com menores níveis de escolaridade são as mais afetadas com poucas informações. Ademais, percebeu-se que os adultos leigos compreendem a importância dos cuidados preventivos para uma boa saúde bucal.
Estudo retrospectivo da relação entre o Escore de Gleason e o Prostate-Specific Antigen (PSA) inicial na presença de metástases
Authors: Veríssimo Igor de Alencar , Oliveira Hugo Razini , Aguiar Gabriel Lucas Azevêdo , Moreno Felipe Bezerra da Silva , Abreu Mariana Santos de , Veríssimo Luan de Alencar , Torres Giovanna Pinheiro
Published: November 2024

O câncer de próstata apresenta como principal sítio de metástase os ossos, com produção de matriz óssea danificada e aumento de cadeia linfonodal em região ilíaca do fórum obturatório. A condição em questão, quando identificada em estágio avançado, apresenta alta morbidade e mortalidade. O presente estudo tem como objetivo identificar qual o grau histológico mais prevalente em situações de câncer de próstata avançado com metástases, verificar se há concordância dos dois valores, PSA (Antígeno Prostático Específico) e Escore de Gleason, em situação de câncer metastático, analisar se esses dois parâmetros influenciam isoladamente na progressão da doença. A pesquisa se caracteriza por estudo retrospectivo, de natureza descritiva, com abordagem quantitativa. Embora tenha sido observada uma correlação entre o PSA e o Escore de Gleason, ela se mostrou fraca, indicando que o PSA isoladamente não é um parâmetro confiável para avaliar a agressividade do tumor. Além disso, os dados revelaram que o Escore de Gleason 7 foi o mais frequente entre os pacientes, o que pode indicar sua relevância clínica na população estudada. As implicações deste estudo indicam a necessidade de um rastreamento mais eficiente e de intervenções personalizadas no manejo do câncer de próstata. A fraca correlação identificada entre PSA e o Escore de Gleason ressalta que os profissionais de saúde devem adotar uma abordagem multifacetada na avaliação dos pacientes, levando em conta não apenas esses marcadores, mas também outros fatores clínicos e biomarcadores que possam impactar o prognóstico.
GANESHA DIGITAL LIBRARY SEBAGAI INSTITUTIONAL REPOSITORY DI UPT PERPUSTAKAAN INSTITUT TEKNOLOGI BANDUNG (STUDI KASUS INSTITUTIONAL REPOSITORY UPT PERPUSTAKAAN ITB)
Authors: Merdekawati Diah Ayu , Agustini Ninis , Rizal Edwin
Published: November 2024

The ITB Library uses the Ganesha Digital Library (GDL) application as an institutional repository. The aim of this research is to examine the process of collecting scientific work, the process of organizing scientific work, and examine the process of disseminating scientific work through the GDL application. The method used in this research is qualitative with a case study approach. Data collection was carried out by means of observation, interviews, literature study, and triangulation. The results of this research show that based on the Chancellor's Decree regarding the Handover of Scientific Works, the uploading of scientific works is limited to the abstract to fulfill the graduation requirements for ITB academics and library users can only access scientific works in full text at the ITB Library. GDL shows that this system has many features that have not been fully utilized according to the needs of library users and library staff.
Alla scoperta di conce digitali e verdi per cità e comuni
Authors: Bernhart Josef , Decarli Peter , Maffei Devide
Published: November 2024

La pubblicazione è concepita come una base di conoscenza interdisciplinare che comprende le basi, i temi comuni e le sfide rilevanti per la governance locale, la digitalizzazione a livello comunale e i temi della trasformazione verde. I principali gruppi target di questa pubblicazione sono insegnanti e ricercatori, studenti universitari in amministrazione pubblica, scienze politiche e settori correlati, nonché professionisti già attivi negli organi di governo locale. Esperti di diverse università e istituzioni di ricerca arricchiscono la discussione scientifica grazie a questa pubblicazione, affrontando questioni urgenti e rilevanti riguardanti la trasformazione digitale e verde con un focus sulla governance comunale.
THE OTHER: IDENTITY DIMENSIONS OF FEMININE ‘SELF’ IN DORIS LESSING’S SHORT STORIES COLLECTION “A MAN AND TWO WOMEN”
Authors: Polishchuk Nadiia
Published: November 2024

Short fiction by British women writers from the postwar era of the 20th century demonstrates an enduring focus on the essence of female identity. This paper examines short stories by Doris Lessing, a prominent figure in British literature, who has yet to receive proper attention in Ukrainian literary criticism. To address the issue of British female identity in the postwar period, the researcher employed new criticism methods, specifically close reading and feminist criticism, namely gynocritics (E. Showalter), as well as comparative analysis.
The examination of selected short stories by D. Lessing revealed certain patterns in the author’s style. Her formal skill is marked by the principle of duplication, which includes: a) repetition of problems, such as marital crises and polygamy (e.g., “A Man and Two Women”, “Each Other”, “To Room Nineteen”); b) duplication of character names (“Each Other”); c) recurrence of plot situations, such as adultery (“A Man and Two Women”, “To Room Nineteen”), and characters’ unhealthy states, including personality disorders (“Dialogue”) and madness (“To Room Nineteen”); d) use of dual narrative perspectives (“To Room Nineteen”, “Dialogue”). The issues related to female identity in D. Lessing’s collection of short stories are presented within two broader contexts: marriage and extramarital relations. Accordingly, two main forms of female individuality emerge: a) the betrayed wife (“A Man and Two Women”, “To Room Nineteen”) and b) the mistress (“Between Men”, “Our Friend Judith”) and her modification, the free woman (“Dialogue”). Despite being mature, intelligent, and experienced, all these characters remain lonely and unhappy.
UNKNOWN LETTERS OF M. I. STOROZHENKO TO O. M. BODIANSKYI
Authors: Aleksandrova Halyna
Published: November 2024

Unknown letters of M. I. Storozhenko to O. M. Bodianskyi.
Spreading Sankofa
Authors: Youngman Tyler , Patin Beth
Published: November 2024

Epistemicide is the devaluing, silencing, or annihilation of knowledge and encompasses systematic knowledge destruction enacted through accumulation of epistemic injustices. Considering prior epistemicide research in LIS––in conjunction with critical, historical, and philosophical perspectives of technology––this paper examines how epistemicide occurs by and through digital technologies, constituting what we call digital epistemicide. The social, cultural, and historical epistemic injustices enabled through technology––and the proliferation of epistemic injustices in digital worlds––demands a theorization of how epistemicide occurs in digital contexts. By considering elements of power, domination, and control in relation to digital technologies, we contribute to a critically informed meta-language for describing digital epistemicide. With concern and care for the next generation of library and information professionals, we call for an enactment of Sankofa Interventions. These include everyday dialogues, practices, policies, actions, or critical reflections that engage with historical narratives from the past, absent from discourses of the present, in a manner that emulates the notion of Sankofa. The enactment of Sankofa interventions to mitigate digital epistemicide, such as reparative storytelling and other critical digital pedagogical practices, requires both ongoing attention to digitizing records that have been left behind and likewise ensuring that digital worlds are well maintained to support the preservation and sharing of knowledge.
"Don't be too proud of this technological terror you've constructed"
Authors: Brooks Thomas , Rehbein Cole , Reysen Stephen , Plante Courtney , Roberts Sharon , Tague Andrew
Published: November 2024

Transhumanism is a school of thought that promotes the enhancement of humanity through technological intervention (e.g., cloning, gene therapies, uploading one’s mind to a computer, nanotechnology). Due to its aims of altering evolutionary processes (Bostrom, 2005), transhumanism is highly controversial (Sinicki, 2015). The ideology finds support from younger men, as well as those engaged in science-fiction literature (Gangadharbatla, 2020; Koverola et al., 2022). The present study aimed to investigate the role of gender and specific science fiction fan identities as predictors of transhumanism in three different samples of fandoms affiliated with science-fiction (e.g., anime fans, furries, and Star Wars fans) as well as in a control sample of college students. Participants (N = 6840) responded to a novel measure of transhumanist orientation in either an online or in-person survey. The findings indicated that men were the most likely to endorse transhumanism, as were fans of Star Wars and furries. Overall, the present study supports theorizing that transhumanism may be an influential motif in the science-fiction genre, as well as an appealing ideology for men.
Bridging the gap: Crypto users’ sense-making of a historical market crisis
Authors: Aebli Annika , Silberstein-Bamford Fabienne
Published: November 2024

The conflict between cryptocurrencies’ ideological promises and their practical reality has recently become a considerable topic of scholarly discussion. It has been framed in terms of the so-called ‘promissory gap’ of cryptocurrencies – a gap that is founded in the contrast between the promises of a ‘trust-free’ system and actual reality. Yet, while crypto’s notion of ‘trust-free’ money has been heavily questioned, there is little research on how users seek to overcome cryptocurrencies’ promissory gap. Contrary to the promises of being ‘trust-free’ by design, this paper demonstrates that struggles for trust and control represent a focal point of the community interactions surrounding crypto. By drawing upon Dervin’s sense-making methodology to conduct interviews with 28 crypto investors, this study examines how social actors attempt to construct ‘bridges’ over a ‘gap-filled’ reality related to the moment of a historical crisis in crypto. The results reveal crypto’s intricate social embeddedness: whilst unequal power dynamics, distrust, and conflicting interests represent primary elements of users’ struggles in the crypto space, users attempt to restore a sense of control by recalling personal motivations and connecting with like-minded people. The paper provides insights into crypto users’ strategies to construct meaning in a highly uncertain environment and contributes to the discussion of crypto as a socially structured phenomenon.
Türkiye’de genel seçim dönemlerinde politik konjonktürel dalgalanmaların incelenmesi
Authors: Akyıldız Songül , İnan Mahmut
Published: November 2024

Bu çalışmada, Türkiye’de 1980 sonrasında gerçekleşen genel seçimlerin, bütçe dengesi, kamu personel giderleri ve transfer harcamaları değişkenleri üzerinde politik amaçlı bir sapmanın etkili olup olmadığı incelenmiştir. İncelenen seçim dönemlerinde politik konjonktürel dalgalanmaların test edilmesinde Nordhaus’un “geleneksel fırsatçı model”i dikkate alınmıştır. Bu modelde, Alesina, Cohen ve Roubini (1991)’nin OECD ülkelerinin ve endüstriyel ülkelerin ele alınarak yaptıkları çalışmalarında kullanmış oldukları otoregresif analiz yöntemi ile ampirik test yapılmıştır. 1980-2019 yılları arasında gerçekleşen genel seçim dönemlerinde politik konjonktürel dalgalanmaların etkili olup olmadığı, dummy değişkeninin kullanıldığı Model I test sonuçlarına göre, dummy katsayısının istatistiki yönden anlamlı olmadığı sonucuna ulaşılmıştır. Dolayısıyla bütçe dengesi, kamu personel giderleri ve transfer harcamaları üzerinde seçim dönemlerine bağlı olarak dalgalanmaların meydana geldiğini ifade etmek mümkün olmamaktadır. Ancak her bir seçim döneminin ayrı ayrı incelendiği Model II test sonuçlarında ise istatistiki olarak pozitif ve anlamlı sonuçlara ulaşılmıştır. Her seçim döneminde ekonomik koşulların, siyasi yapının ve seçmen tercihlerinin farklılığına bağlı olarak farklı sonuçlar ortaya çıkmıştır.
Utilizing Blood Clam and Green Mussel Shell-Derived CaO Biocoagulants for Acid Correction Testing in GCV Analysis
Authors: Triwardhani Aline Bella , Fadlilah Ilma , Dwityaningsih Rosita
Published: November 2024

Proper management of company-generated wastewater, specifically wastewater generated from acid correction testing in GCV analysis conducted by service providers and consulting firms, is crucial. Coagulation-flocculation emerges as an effective treatment method, utilizing biocoagulants derived from abundant blood clam and green mussel shells in Cilacap Regency. This study aims to identify the optimal calcination temperature for CaCO3 to CaO decomposition, assess the effectiveness of CaO biocoagulants in treating acid correction testing wastewater, and evaluate the impact of CaO biocoagulant dosage on pH, TDS, TSS, Turbidity, COD, and BOD5 parameters. Results indicate 1000°C as the best calcination temperature, with elemental compositions of Ca at 55.3% for blood clam shells and 58.7% for green mussel shells. The CaO coagulant's efficacy, derived from these shells, demonstrated significant pH increase (5 to 12.10), and substantial reductions in TDS (60%), TSS (79%), Turbidity (91%), BOD5 (93.71%), and COD (88%). The study reveals a dose-dependent relationship, with higher doses elevating pH and decreasing TSS, BOD5, and COD, while lower doses exhibit greater efficacy in reducing TDS and Turbidity values. This research underscores the potential of blood clam and green mussel shell-derived CaO biocoagulants in wastewater treatment, promoting environmental sustainability.
Synthesis of Red Fruit Oil (Pandanus Conoideus) Emulsion with Tween 80 Surfactant and Alginate Co-Surfactant
Authors: Indriyani Nita , Ramadhani Layli Putri , Muzdalifah Nirmalani , Sari Amalia Puspita , Fathurrahman F.
Published: November 2024

Red fruit (pandanus conoideus) is one of the natural biological resources that contains lipid compounds that are beneficial and important for health. However, the content of red fruit oil components is sensitive to oxygen, light, and heat, so it impacts damage to the content and a relatively short shelf life. The emulsification method can increase the benefits and shelf life of red fruit oil. Emulsions can be stored by preserving active substances in their core and protecting them with a shell layer. Adding alginate to the water phase can increase the stability of the emulsion against aggregation because these molecules can cause steric and electrostatic repulsion between droplet interfaces. This study aims to synthesize red fruit oil emulsions with alginate as a co-surfactant. The variables observed were the ratio of ingredients, the effect of speed, and the time of emulsification stirring. The study's results, namely alginate, can be used as a co-surfactant in the synthesis of red fruit oil emulsions. The ratio of red fruit oil emulsion ingredients is 1% weight/volume, tween 80 1% weight/volume, and alginate 2% weight/volume of a total volume of 40 ml. The emulsification process conditions were carried out at room temperature with a stirring speed of 25,000 rpm and a stirring time of 10 minutes. The resulting emulsion is an oil-in-water emulsion (m/a). The emulsion is dominated by hydrophilic or polar components caused by tween 80 surfactants and alginate co-surfactants. In addition, the creaming formation time occurred after 216 hours, and the separation time occurred after storage for 552 hours.
Att teoretisera: en artikel, ett exempel, en appell
Authors: Dellgran Peter
Published: November 2024

Hur många av oss kan räkna med hjälp från våra nära och kära om vi får kännbara ekonomiska bekymmer som vi inte kan lösa på egen hand? Om det är riktigt illa, och jag drar mig för att gå till socialkontoret – vilket många gör – kan jag då vända mig till någon i familjen, släkten eller vänkretsen? Och hur ska jag då på bästa sätt lägga fram mitt dilemma, utan att äventyra den aktuella relationen, skapa konflikter eller skuld- och andra obehagskänslor hos mig själv och den andre?
Ungefär så heter det i ingressen till en artikel som Majen Espvall och jag skrev tillsammans inom ramen för ett större forskningsprojekt om informellt ekonomiskt stöd, finansierat av dåvarande FAS (numera Forte). Artikeln, som nu har ett antal år på nacken, döptes till Reciprocitetens villkor. Om informellt ekonomiskt stödutbyte (Espvall & Dellgran, 2006). Detta är historien om dess tillkomst, och de mer eller mindre (o)medvetna överväganden som låg till grund för hur den kom att skrivas. Men syftet är inte enbart att rekonstruera vägen fram till den färdiga texten. Genom att sätta fingret på vad och hur vi gjorde, vilket resulterade i en teoretisering av den komplexa dynamik som präglar mellanmänskligt utbyte av hjälp, stöd och omsorg, är ambitionen också att illustrera en så kallad konfigurativ teoretisering som kan användas för att fånga sociala processer och kausal komplexitet (Furnari m.fl., 2021).
Skolkuratorns samtal med unga migranter i gränslandet mellan stödsamtal och behandling
Authors: Eriksson Helena , Helmersson Sara , Högdin Sara
Published: November 2024

School social workers’ counseling of Young Migrants at the Interface Between Supportive Counseling and Therapy
The school social worker has an important role in the support of young people in vulnerable situations. Counselling is central to their professional practice, not least when working with young migrants, a group where trauma and experiences of violence may be part of their life story and migration process. The purpose of the study is to increase the understanding of counseling as a tool for school social workers in the professional meeting with young migrants. The empirical data include qualitative interviews with 15 school social workers who meet this group daily. The interviews have been analysed using a qualitative thematic analysis. The findings show that the delimitation of which counseling lies within the school social worker’s responsibility is not clear. The fact that school social workers experience that other parts of the welfare system are often unavailable to young migrants forces them to go beyond what they describe as part of their professional responsibility and provide therapeutic counselling. The school social worker uses different tools and methods in their counseling and mixes them based on their own area of interest, education, and experience. The study concludes that the accessibility that newly arrived young migrants have with the school counselor creates a role where they are the “only” professional available to offer support and counseling. This means that the school social workers need to go outside their professional domain. The school social workers discretion in relation to the type of counseling and how it is conducted appears to be unlimited.
Papel mediador de las redes sociales en la relación entre afrontamiento, ansiedad y depresión en situaciones de emergencia
Authors: Mestas- Hernández Lilia , Gordillo León Fernando , Robles-Aguirre Bernardo , Cordero Juárez Verónica , González López José Eduardo
Published: November 2024

La sobreutilización de las redes sociales como medio de interaccionar con otras personas durante el COVID-19 podría tener consecuencias negativas para la salud mental en personas con determinados estilos de afrontamiento. El objetivo de la presente investigación fue el de analizar la relación entre afrontamiento, frecuencia de uso de las redes sociales y los niveles de ansiedad y depresión en adultos jóvenes durante la COVID-19. Se realizó un experimento en el que participaron 643 sujetos que completaron unos cuestionarios de afrontamiento (Cuestionario de Afrontamiento del Estrés; SCQ), ansiedad (Inventario de Ansiedad de Beck; BAI) y depresión (Inventario de depresión de Beck; BDI-IA). Además, se tomaron medidas de la frecuencia de uso de las redes sociales (F-RS: 1 hora o menos, 2-3 horas, 4-5 horas, más de 5 horas). Los sujetos que utilizaron con mayor frecuencia las redes sociales (> 5 horas vs < 5 horas) tuvieron mayores niveles de ansiedad, depresión, autofocalización negativa, expresión emocional abierta, y búsqueda de apoyo social. Por otro lado, la F-RS mediaba en la relación entre afrontamiento (autofocalización negativa, expresión emocional abierta, evitación, búsqueda de apoyo social) y los niveles de ansiedad y depresión.  Estos resultados advierten del papel mediador negativo de la sobreutilización de las redes sociales en situaciones de emergencia sobre la salud mental, y aporta información relevante para establecer estrategias que permitan regular la intensidad afectiva de la población y mejorar la adherencia a las medidas preventivas.
Coffee in mutual aid for the recovery of mental health in rural settings
Authors: Agudelo Hernández Andrés Felipe , Giraldo Alvarez Ana Belén
Published: November 2024

Los trastornos mentales tienen un impacto significativo en las personas, las familias, las comunidades y los países con consecuencias económicas evidentes, incluidos los costos directos, la pérdida de productividad y otros costos indirectos. Cada vez se reconoce más el papel de las comunidades en la gestión de su recuperación en términos de salud mental. Desde la Declaración de Caracas de 1990 se establece la responsabilidad de los Estados de promover y acompañar las acciones comunitarias. Por otro lado, el fortalecimiento de la cultura es reconocido como un factor protector de la salud mental y debe ser un componente de cualquier intervención comunitaria. A través de un método argumentativo como razón práctica y lógica inductiva, el objetivo de este estudio es analizar las estrategias de recuperación psicosocial surgidas de las comunidades. El cooperativismo, la ayuda mutua y el café se proponen como elementos orientadores de este enfoque epistemológico, este último como elemento cultural en la recuperación de la salud mental rural. La medicina, la psicología social y comunitaria y la rehabilitación de base comunitaria son movimientos no hegemónicos que pretenden fortalecer la autonomía y el empoderamiento de individuos y grupos. Esto sugiere que, con una mayor inversión en servicios comunitarios, una mayor recuperación en el entorno mismo y menos hospitalizaciones psiquiátricas, finalmente habrá un impacto positivo. Su objetivo es garantizar condiciones de vida dignas y de calidad, entre otros fines. Se concluye la importancia de orientar estas iniciativas a mejorar los problemas de implementación de las políticas públicas sociales y de Salud.
Cancer immunogenic cell death via pyroptosis with CXCR4-targeted nanotoxins in hepatocellular carcinoma
Authors: Huang Yingbin , Li Yihu , He Rui , Dong Shuyi , Zhao Zheng , Jiao Xingyuan
Published: November 2024

Introduction

Cytotoxic agents have shown limited benefits in hepatocellular carcinoma (HCC), mediated in part by the lack of targeting. As cell-penetrating peptides (CPPs) are capable of delivering various biologically active molecules into cells, including protein, peptides, small chemo-drugs, and nucleic acid with or without targeting, we developed T22-PE24, a CXCR4-targeted self-assembling cytotoxic nanotoxin, to effectively induce HCC pyroptosis.

Methods

T22 incorporating enhanced green fluorescent protein (EGFP) or PE24 was purified from DE3 bacterial cells and characterized using transmission electron microscopy, the Zetasizer Nano®, and SEC-HPLC. The internalization effect of T22-EGFP was detected by flow cytometry system (FCS) in CXCR4+/LM3(CXCR4−) HCC cells. The CCK8, lactate dehydrogenase (LDH) release, Western blot, and nude mice HCC models were used to estimate the cell viability of T22-PE24. The complete-immunity HCC tumor-bearing mice model was used to assess the immune response of T22-PE24.

Results

The round shape under transmission electron microscopy, 49.4 nm hydrodynamic diameter, and −33.33 mV zeta potential indicated that T22-PE24 self-assembled into nanoparticles. T22 incorporating EGFP selectively internalized in CXCR4+ HCC cells and showed no accumulation in CXCR4-knockout HCC cells. The T22-PE24 nanotoxin induced HCC pyroptosis via the caspase-3/GSDME signaling pathway and suppressed tumor growth in the absence of histological alterations in normal organs. Using the complete-immunity HCC tumor-bearing mice model, we found that T22-PE24 nanotoxin effectively induces the global reprogramming of cell components of the immune tumor microenvironment, leading to enhanced antitumor effects compared to those observed in immunodeficient mice.

Conclusion

Our findings demonstrate the activation of the innate immune response in HCC by inducing pyroptosis with T22-PE24 nanotoxin treatment and support an implementation of this strategy for HCC treatment.