bluuebunny/crossref_metadata_2025 huggingface dataset:
Amelioration of the “Truskavetska” bottled water by hydrogen-riching
Authors: Savytskyi Ivan , Zukow Walery , Popovych Igor
Published: February 2025

Background and aim. The “Truskavetska” bottled water (TW) is officially classified as table water and is not considered medicinal. Recently, it rats experiment we found that enrichment of TW with Hydrogen generally has a favorable effect on its stress-limiting capacity, associated with antioxidant activity. We hypothesized that enrichment of TW with Hydrogen may increase its physiological/therapeutical activity, in particular in relation to patients with chronic pyelonephritis. Testing this hypothesis was the aim of this study.
Material and methods. The object of observation were 22 men with chronic pyelonephritis. We determined the leukocyturia and bacteriuria levels and recorded EEG, HRV, phagocytosis, lipids peroxidation as well as routine hematological and biochemical blood parameters. The survey was conducted twice: on admission and after week of drinking of Naftussya bioactive water (NW) or TW by 200 mL for 1 hour before meals three times a day, or TW by 100 mL, mixed before use with 100 mL of regular water, but enriched with Hydrogen.
Results. It was found that TW does not affect catalase activity and blood levels of α2-globulines and sialic acids, while NW significantly increases them; after enrichment of TW with Hydrogen, it partially acquires the properties of NW, although it is still significantly inferior to it. On the other hand, Hydrogen gives TW the ability to reduce blood levels of MDA, bilirubin, prothrombin and eosinophils, which also brings it closer to NW. Instead, hydrogen-enriched TW even slightly outperforms NW in terms of enhancing the intensity of blood neutrophils phagocytosis, increasing serum lysozyme activity and urinary amylase excretion, on the one hand, and reducing leukocyturia and bacteriuria, blood levels of CIC and HDLP cholesterol, as well as vagal tone, on the other hand. In addition, enrichment of TW with Hydrogen eliminates caused by it the decrease in the blood content of erythrocytes and hemoglobin and even reverses the decrease in the entropy of EEG and HRV as well as PSD of theta-rhythm in occipital loci.
Conclusion. Enriching the low-activity "Truskavetska" bottled water with Hydrogen significantly increases its physiological activity to a level comparable to those of therapeutic Naftussya water, which is manifested in a favorable effect on leukocyturia and bacteriuria as well as phagocytosis, metabolism, and erythron in patients with chronic pyelonephritis.
Patógenos fúngicos en los paisajes arquitectónicos vulnerables de Bogotá. Una mirada transdisciplinar para diseñar desde lo microscópico
Authors:   ,  ,, Serrano Sierra Alejandro , Gómez Méndez Luis David , Valentina Rey Manrique Luna
Published: February 2025

Este trabajo transdisciplinario, realizado en Bogotá, Colombia, 2024, investiga la presencia de
hongos patógenos en viviendas vulnerables de Bogotá y su posible impacto en la salud. A través
del análisis microbiológico en una casa ubicada en el barrio Arabia, de la localidad de Ciudad
Bolívar en Bogotá, se identificaron hongos de los géneros Trichoderma spp., Mucor spp., Penicillium
spp. y Rhizopus spp., que proliferan en ambientes con alta humedad y ventilación deficiente, lo que
puede afectar la calidad de vida de los habitantes. El estudio destaca la importancia de integrar
enfoques pluriversales, promoviendo una visión más holística de la relación entre los habitantes
y su entorno microbiológico. Al concientizar sobre la coexistencia con “otros” organismos, se
fomenta la adopción de estrategias arquitectónicas sostenibles preliminares, que no solo mejoren
la infraestructura, sino también la salud ambiental dentro de las viviendas. Esta investigación
subraya la necesidad de un diseño arquitectónico inclusivo, que considere el microbioma fúngico
como un indicador de los problemas de habitabilidad y apunta a intervenciones que aborden tanto los factores arquitectónicos como los ambientales. Así, se propone una metodología que
permita la comprensión de espacios vulnerables, desde los microorganismos que lo habitan. Este
enfoque es un inicio transdisciplinario para generar un cambio sostenible en las viviendas populares, mejorando las condiciones de vida y el bienestar general de las comunidades marginales de Bogotá.
Blocking Block Formation: Evidence from Private Loan Contracts
Authors: Akins Brian , De Angelis David , Zufarov Rustam
Published: February 2025

Does the structure of the borrower’s equity ownership matter in debt contracting? This paper addresses this question by examining change in control clauses. These clauses are pervasive in loan contracts, yet their terms are not boilerplate. Examining 14,940 contracts, we document significant heterogeneity in the use and size of ownership caps, which limit large equity block formation. Overall, our evidence indicates that the way equity capital is distributed matters to lenders. Lenders set lower caps to mitigate risks arising from power contests among shareholders, formation of a new (coordinating) block, potentially resulting in activism, and hostile takeover threats via toehold strategies. We confirm some of these effects using two quasi-natural experiments. Caps below 50% are associated with a drop in firm value but not in the cost of debt, consistent with exacerbated firm-manager agency costs. Finally, two findings shed light on ways creditors may influence corporate governance: the largest block size increases when these minority block restrictions expire, and the likelihood of withdrawing an announced buyback increases during the life of these loans.

This paper was accepted by Bo Becker, finance.

Supplemental Material: The internet appendix and data files are available at https://doi.org/10.1287/mnsc.2023.04224 .
Institutional Ties and Publications in Top Accounting Journals
Authors: Whited Robert L.
Published: February 2025

Academic journals certify and disseminate scientific knowledge. However, institutional ties between journals and universities can lead to conflicts of interest that compromise peer review. I consider publication patterns in the “Top 3” accounting journals in light of the journals’ governance structures and institutional ties. The Accounting Review (TAR), governed by the American Accounting Association (AAA), has no university affiliations. Journal of Accounting and Economics (JAE) and Journal of Accounting Research (JAR) are private journals with longstanding editorial ties to specific universities: the University of Rochester, the University of Pennsylvania, and Massachusetts Institute of Technology for JAE and the University of Chicago for JAR. For publications from 2000–2022, I find that journal-affiliated authors (current faculty and recent PhDs from journal-affiliated universities) publish disproportionately in their affiliate journal. Further analysis suggests that this pattern does not appear to be attributable primarily to authors’ journal submission preferences, particularly for JAR affiliates. In fact, JAR affiliates publish their least cited work in JAR (relative to TAR and JAE), and affiliate articles in JAR receive significantly fewer citations than articles in JAR by authors from top institutions unaffiliated with JAR. Results further suggest that institutional ties may be particularly impactful for pretenure PhD affiliates and for the publication of dissertations. The results are consistent with the idea that institutional ties may influence the publication process in accounting journals, particularly at JAR, where institutional affiliations are formalized and concentrated in one institution.

This paper was accepted by Ranjani Krishnan, accounting.

Supplemental Material: The online appendix is available at https://doi.org/10.1287/mnsc.2024.04553 .
Birt-Hogg-Dubé syndrome - a rare genetic disorder complicated by pneumothorax: A case report
Authors: Li Meng-Zhen , Deng Jun
Published: February 2025

BACKGROUND

Birt-Hogg-Dubé (BHD) syndrome is a rare genetic disorder associated with mutations in the BHD gene, which can manifest symptoms at any age, including dermatological and pulmonary complications, as well as renal tumors. This study presents a case of a BHD patient who experienced spontaneous pneumothorax, aiming to enhance the understanding of this syndrome.

CASE SUMMARY

A 42-year-old female patient presented with left-sided chest pain and tightness lasting three days. Chest computed tomography scans revealed left-sided pneumothorax and multiple pulmonary bullae. Physical examination indicated decreased vocal fremitus and tympanic percussion on the left side. A thorough family history revealed a pattern of pulmonary disorders, including emphysema, spontaneous pneumothorax, and lung cancer among relatives. Genetic testing identified a heterozygous frameshift mutation in the FLCN gene at the 17p11.2 locus. Based on the clinical presentation, imaging findings, family history, and genetic results, the patient was suspected to have BHD syndrome.

CONCLUSION

We present a case of a heterozygous mutation in the FLCN gene in a patient with BHD syndrome, aiming to review the associated clinical characteristics and genetic mechanisms of this condition. This case serves as a reference point to offer insights into the diagnosis of multiple pulmonary cysts and spontaneous pneumothorax of unknown etiology in clinical practice.
The Role of Parent Advocacy in Autistic Youths’ Self-Determination
Authors: Moser Carly , Burke Meghan M. , DaWalt Leann Smith , Taylor Julie Lounds
Published: February 2025

Parent advocacy is important for the transition outcomes of autistic youth. However, it is unclear whether parent advocacy efforts support or stifle youths’ self-determination. This study examined concurrent (n = 180) and longitudinal (n = 134) associations between parent advocacy and transition-aged autistic youths’ self-determination (as reported by parents) and explored whether individual and family characteristics moderated this relationship. Cross-sectional results indicated a positive association between parent advocacy and self-determination for youth with higher adaptive behavior, lower externalizing behavior, and higher parent-child relationship quality. Longitudinal results demonstrated that change in parent advocacy related to change in self-determination for youth with lower adaptive behavior and higher externalizing behavior. Findings suggest that targeting parent advocacy could enhance self-determination skills in autistic youth.
Imagining South Korea through Musical Borrowing: Agust D’s “Daechwita” in K-pop
Authors: Kim Sunhong
Published: February 2025

Abstract: This article examines musical hybridity using local musical materials in K‑pop as a way of imagining South Korea in the twenty-first century. I analyze the plot and visual-aural aspects of the music video for in conversation with the discussions it inspired in public forums. The national mentality around contemporary success illustrated in this song upholds the values of developmentalism, material success, and military culture that were constructed throughout the Park Chung Hee regime. Hence, Agust D’s musical borrowing manifests his own postmodern eclecticism through his engagement with the modern sense of urbanity in South Korea as well as with premodern aurality and imaginary. Abstract: 이 논문은 21세기 대한민국을 연상하는 방법으로써 케이팝에서 지역적 음악요-소를 차용한 음악적 혼종성 사례를 탐구한다. 필자는 어거스트 디 대취타 () -의 뮤직비디오에서 나타나는 시각/청각적인 요소와 세부적인 구성을 주로 검토-하며 공적인 토론도 함께 분석한다. 그의 노래에서 암시하는 현대사회의 성공에 대한 민족주의적 사고방식은 박정희 시대의 국가주의 체제 속 개개인에게 함양-시킨 개발주의, 물질적 풍요, 군대문화의 견해와 밀접하다. 어거스트 디의 음악-적 차용은 전근대적 소리와 공간뿐만 아니라 해방 후의 대한민국 도시화의 근대-적 의의를 표현함으로써 후기 근대주의적인 절충주의를 함의한다.
Inventing Cultural Heritage: Revalorization of Two Popular Musical Scenes through Nostalgic-Themed Live Concerts in Taiwan
Authors: Chu Meng-Tze
Published: February 2025

Abstract: This paper explores the efforts of older enthusiasts in Taiwan who strive to preserve and present their musical heritage through nostalgic-themed concerts. Focusing on the Golden Voices and Youth Melody series, the article examines how these enthusiasts aim to revive the “living scenes” of their past experiences and make them immortal through live performances. Golden Voices represents the Mandopop singers from the famous TV music show Star Showcase , which ran from 1962 to 1977, whereas Youth Melody assembles the pop-rock cover musicians who played in the US military clubs in Taiwan during the Vietnam War. The organizers of these concerts collaborate with public and private sectors to create cultural activities and enrich historical collections, demonstrating a self-authorized heritage action. Despite challenges such as aging and changing media landscapes, these enthusiasts seek recognition and acknowledgment from Taiwanese society. This article also discusses geopolitical influences during the Cold War, highlighting how musical scenes in Taiwan evolved amid political tensions. Ultimately, it argues that the true essence of cultural heritage lies not just in the songs themselves but in the act of them being sung by passionate enthusiasts, ensuring that their stories and experiences are preserved for future generations. Abstract: 本文呈現臺灣高齡流行音樂愛好者，透過懷舊主題演唱會來創造音樂遺產的過程。論文聚焦於「金嗓金曲」和「青春旋律」兩系列，探討這些愛好者如何透過現場演唱會復活過去經歷的音樂場景並使之永垂不朽。「金嗓金曲」重現了 1962 年至 1977 年間，著名臺灣電視節目《群星會》中的華語流行歌手，而「青春旋律」則匯集了在越戰期間，於臺灣美軍俱樂部演出的搖滾翻唱樂人。這些演唱會的主辦者與公私部門合作，籌辦多樣文化活動並豐富歷史收藏，展示了一種「自我授權」的遺產行動。儘管面臨著高齡化和媒體景觀變化等挑戰，這些愛好者仍尋求臺灣社會的認可和認同。本文還討論了冷戰期間的地緣政治影響，強調臺灣音樂場景在政治緊張局勢下的演變。最終，論文主張文化遺產的真正本質不僅在於歌曲本身，而是在於熱情的愛好者唱這些歌曲的行為，並將他們的故事和經驗傳承給後人。
Decolonizing Grace: Samoan Women Confront Trauma and Abuse
Authors: Ellis Juniper
Published: February 2025

Abstract: Contemporary Samoan writers confront colonizing, heteropatriarchal uses of Christianity and of Samoan culture that silence and justify abuse committed against girls, women, and fa'afafine (third-gender individuals). Lima Hansen's memoir, Grace Brought Me Here (2018), challenges her father's wielding of religion and Samoan culture to cloak family abuse and sexual violence. "As Pasifika women," she says, "we are taught to keep domestic violence issues quiet. Due partly to the shame it brings to our families and communities that we are part of." Her memoir provides a foundational book-length analysis of abuse. Without attacking any specific tradition, she calls out the way her father presents himself as a model Mormon elder to defend his assaults. This central investigation of Hansen's memoir is expanded with consideration of the short story, "Family Pride" (2021), in which Nicki Perese challenges a wedding in an unspecified contemporary church that covers up an uncle's sexual abuse of his niece, and Penina Ava Taesali's poems in Sourcing Siapo (2016), which critique the Catholic Church's abandonment of Taesali's mother when her parents divorce, leaving a young Taesali at the mercy of her stepfather's abuse. The texts document abuse experienced by women, girls, and disabled individuals who grow up in Samoa, or as immigrants in New Zealand or the United States. Their calls for transformation of gender inequities are echoed by those who work in many locations in Oceania to challenge family and sexual violence.
Reading Ms. Magazine in San José: Transnational Gender-Work Among US American Women in 1970s Costa Rica
Authors: Shragai Atalia
Published: February 2025

Abstract: Examining the weekly column, "Women's Lib and You," (WLAY) published in the Tico Times , the most widely read English-language newspaper in Costa Rica, between February 1972 to September 1972, this article explores the ways in which US American women and men living in Costa Rica negotiated and interpreted the transnational flow of the core ideas and practices of Second Wave feminism from the United States. Contributors to the columns, hiding behind the pseudonym "Anne Eliot," were a group of young, college-educated women, familiar with the Women's Lib movement in the United States, who adopted the groundbreaking new Ms. Magazine as their source of inspiration, thus cultivating transnational practices and identifications. Based on a close reading of the twenty-nine columns, along with oral histories and correspondence with women who took part in this tiny US American feminist circle, the article examines WLAY as a transnational textual and cognitive space for gender work that generated a sort of hybrid, unique guide and manual for US feminism as it applied to life in Costa Rica. WLAY is thus a compelling example of the way ideas regarding gender liberation were modified over time and space in the process of immigration and expatriatism and were problematized in their new context.
Holistic Epistemology and Prospects for Design in the Philosophy of Information
Authors: Dick Archie L.
Published: February 2025

Abstract: The discipline of library and information science (LIS), conceived narrowly as applied philosophy of information , overlooks a rich tradition of debate and discussion about its holistic epistemological features. For the LIS profession to deliver services that safeguard social values such as equality of access, intellectual freedom, and diversity, its discipline should reconnect information with knowledge and with epistemology as the theory of knowledge. This article critiques conceptions of information not bound to the core features of the LIS profession and its discipline. It evaluates some early and recent conceptions of information connecting it to the profession’s remit of activities and services. LIS theorists’ ideas about holistic epistemology and perspectivism are discussed and evaluated as prospects for design and development.
A Reconsideration of Metatheories of Library and Information Science: A Chinese Information Philosophy Perspective
Authors: Wang Lin , Duan Jiaxuan
Published: February 2025

Abstract: In Western countries, the philosophy of information has emerged in the last two decades and influenced the core ideas of library and information science (LIS). Chinese information philosophy, which Kun Wu proposed in the 1980s, has been largely ignored in LIS. Chinese information philosophy is a unique academic school in the international information philosophy community and has great potential to update foundations in LIS. This paper investigates the value and implications of Chinese information philosophy for metatheoretical research in LIS. It draws out theories of this philosophy in the digital age to discuss insights LIS can gain, including in information ontology and epistemology, information thinking theory, information evolution theory, holographic theory, social information theory, and information production theory. Introducing Chinese information philosophy to LIS will change the metatheoretical landscape of the discipline and bridge Chinese and Western LIS to a large degree.
A 24-year longitudinal study on a STEM gateway general chemistry course and the reduction of achievement disparities
Authors: Basu Partha , Malik David J. , Graunke Steven
Published: February 2025

The “First Year Experience” is a critical component of retention of STEM majors. Often, general chemistry has been labeled as a “gatekeeper” course for STEM careers due to a high attrition rate and a course that leads to increased time for graduation when students are inadequately prepared. We demonstrate that the active learning strategy Peer-Led Team Learning (PLTL) model increases student retention (%DFW calculated from earned grades A through F plus withdrawals, W) and success (%ABC calculated from earned grades A through F). We have analyzed approximately 24 years of data in general chemistry I (~20,000 students), using Analysis of Covariance (ANCOVA), which showed progressive, significant improvement in both student success and completion metrics. A Hierarchical Linear Modeling (HLM), using a combination of course and student-level variables, demonstrated the impact of PLTL on internal exam metrics and overall course grades. Further, HLM modeling assessed the impact of PLTL controlling for various student demographics. PLTL strongly impacted URM student completion rates to a greater degree than well-represented students, reducing the URM/non-URM achievement gap.
PERFIL EPIDEMIOLÓGICO E TENDÊNCIA DA HANSENÍASE EM MENORES DE 15 ANOS NO PARANÁ, 2001 - 2021
Authors: Ferreira Natalia Marciano de Araujo , Ramos Antonio Carlos Vieira , Montanha Rafaela Marioto , Scholze Alessandro Rolim , Gonçalves Laís Cristina , Popolin Marcela Antunes Paschoal , Moraes Juliana de Oliveira Marques de , Pieri Flávia Meneguetti
Published: February 2025

Objetivo: Estimar as características demográficas, clínicas e a tendência temporal da hanseníase em menores de 15 anos. Método: Estudo ecológico de séries temporais com dados provenientes do Sistema de Informação de Agravos de Notificação. Foram incluídos todos os casos notificados e confirmados de hanseníase em menores de 15 anos residentes no estado do Paraná de janeiro de 2001 a dezembro de 2021. A análise da tendência temporal foi realizada por meio do modelo de regressão de Prais-Winsten. Resultados: Entre os casos notificados e confirmados (n=428), houve predominância do sexo feminino (n=230), brancos (n=270), classificação operacional paucibacilar (n=268), que apresentaram menos de cinco lesões (n=342), sem grau de incapacidade física instalado (n=357). Foram registrados em média 8,16 contatos por criança/adolescente, 3,39 deles examinados em média. Houve maior incidência em quatro regionais de saúde do estado, onde encontram-se municípios com alto grau de urbanização e densidade demográfica. A série temporal anual da detecção de hanseníase apresentou tendência decrescente (APC= -8,35; IC95% = -0,00049 – -0,0003). Conclusão: A tendência mostrou-se decrescente, apesar da maior incidência em algumas localidades específicas e das características clínicas encontradas. Reforça-se a necessidade de educação em saúde e busca ativa dos casos em menores de 15 anos.
Mediterranean spotted fever and its complications in Mostaganem, Algeria‎
Authors: S. Bestaoui , NH Amar , M Fellah , HF Bouhalloufa , F Salam
Published: February 2025

Mediterranean Spotted Fever (MSF) is an ancient anthropozoonosis of bacterial origin, in which ‎the cause is Rickettsia conorii in which the vector of transmission to humans is the brown dog ‎tick by bite. It is a seasonal disease raging in an endemic state in the Mediterranean region, ‎including our region of Mostaganem (Western Algeria). It was a retrospective study based on ‎the records of hospitalized patients at the infectious diseases department in Mostaganem, ‎recording 36 cases of MSF, from 2023 to 2024. The majority of patients were male and had ‎been in contact with dogs, both domestic and wild. In addition, the majority had a history of ‎diabetes or hypertension and had taken antibiotics before hospitalization. Complications were, ‎therefore, described in 12 of the 36 patients and were mainly nephrological, articular, cardiac, ‎etc. The Direct Current (DC) of our patients was based on Raoult’s diagnostic criteria given the ‎endemic zone, because of the non-availability of serology, or the polymerase chain reaction ‎‎(PCR) test. Although It remains a benign disease, it can be responsible for serious ‎complications, whether reversible or not. It must be systematically evoked in the face of febrile ‎eruptions during hot seasons in countries around the Mediterranean, including ours‎.
Desarrollo en la doctrina moral: «fidelium et pastorum conspiratio» como cuestión viva
Authors: Martínez Julio L.
Published: February 2025

El momentum eclesial que vivimos en el cambio de era de la postmodernidad tecnológica llama a una renovación en la teología moral cristiana para que responda a los signos de los tiempos que son verdaderamente signos de Dios. Gana relevancia la cuestión del desarrollo de la doctrina en materia de fe y costumbres y, dentro de ella, la pregunta de cómo los fieles (sensus fidelium) deben participar activamente junto con los pastores y los teólogos. A partir de las vías abiertas por el Concilio Vaticano II iremos a los escritos de J. H. Newman, quien a mediados del siglo XIX planteaba con una capacidad proléptica impactante la necesidad de consultar a los fieles para «co-inspirar» la verdad en la historia, para encontrar la guía del Espíritu para la fe y la vida del pueblo de Dios. Junto al teólogo inglés, otros como Lonergan, Rahner, Murray, Fries, Congar, Duquoc, Noonan, Whelan o Madrigal, por citar a los más presentes aquí, ayudan a reubicar el progreso de la doctrina en moral en este tiempo sinodal, donde el papa Francisco urge una renovación teológica de apertura a la experiencia con su magistero kerigmático, sólidamente arraigado en la Tradición viva y creativa de la Iglesia.
Optimization Location Routing Problem (LRP) of Humanitarian Aid Distribution Using HGASA Method in Sigi District
Authors: Bombang Serli , Prasetya Ichiarto Bonivasius , Hardi Purba Humiras
Published: February 2025

Disasters are events that disturb and threaten people's lives caused by nature or/and non-natural factors as well as human factors that cause casualties and economic losses. The polemic of uneven assistance and delays in the event of a natural disaster is the most common thing that occurs during a natural disaster. Location Routing Problem is a continuation of the classical routing problem that combines strategic and operational decisions with the facility location problem and the vehicle routing problem. This study aims to determine the location of the distribution centre construction and the optimal route using the Hybrid Genetic Algorithm and Simulated Annealing methods with the objective function of minimizing total costs and minimizing maximum service time for the distribution of humanitarian aid natural disaster 2018 in Sigi Regency.  Optimization is designed into two scenarios, namely the construction of two distribution centres and three distribution centres. The result show that construction of two distribution centres can be designed at locations D3 and D5 with a total cost of IDR405 609 000 and a maximum travel time of 25.921 hours, while the construction of three distribution centres can be done at locations DC1, DC4 and DC 5 or with a total cost of IDR605,778,000 and a maximum service time of 19.634 hours.
Satellite-Based Validation of Contrail Prediction Models for Sustainable Aviation
Authors: Chandana Baddireddi Sree , Reddy Pelleti Nandieswar , Alapati Rithvika , Reddy Sai Aswath , Doraisamy Radha , Sankari Uma
Published: February 2025

The aviation industry significantly contributes to global warming through the formation of contrails, which trap heat in the atmosphere and exacerbate climate change. To mitigate this effect, sophisticated models have been developed to predict contrail formation and its associated warming effects, but these require empirical validation for accuracy. This project leverages satellite imagery to validate contrail prediction models, enabling effective contrail avoidance strategies for airlines.  U-Net variants, a convolutional neural network architecture, is utilized for image segmentation to identify contrails in satellite imagery. By optimizing the threshold for the softmax layer, contrail detection accuracy, and validating model predictions with real-world data had been enhanced. This enables pilots to minimize contrail formation during flights, aiming to reduce the aviation industry's environmental impact. The research offers a scalable and cost-effective solution for enhancing aviation sustainability and aligns with global efforts to combat climate change.
A METHOD FOR MEASURING THE ECONOMIC EFFICIENCY OF USING A FREQUENCY CONVERTER IN SEWAGE PUMP PLANTS
Authors:   South Ural State University, Chelyabinsk, Russia, Speranskiy P.V.
Published: February 2025

Frequency converters have gained in popularity over the last few decades and are widely used in many modern engineering lines. While the introduction of frequency converters in pumping installations theoretically allows for a simple solution to wide range of technical-engineering problems, in sewage pump plants are equipped with ordinary pump units with no frequency converters, essentially working the same way they did half a century ago. Rare cases of such implementations show mixed results, further slowing the development of this area, and questioning the viability of frequency converters. In order to solve this problem and measure their economic efficiency, the physical parameters of the automatic control of sewage pump plants have to be established. According to the study, the power required can be reduced, and based on the proposed algorithm a method for calculating savings has been developed. The method takes into account the behavior of actual pump plants and the technicalities of pump units, thus providing for the versatility and thoroughness of its application. reality, these devices are often misused, negating the possible benefits. The problem is particularly acute in sewage line design. Being a major consumer of energy, sewage pump plants are equipped with ordinary pump units with no frequency converters, essentially working the same way they did half a century ago. Rare cases of such implementations show mixed results, further slowing the development of this area, and questioning the viability of frequency converters. In order to solve this problem and measure their economic efficiency, the physical parameters of the automatic control of sewage pump plants have to be established. According to the study, the power required can be reduced, and based on the proposed algorithm a method for calculating savings has been developed. The method takes into account the behavior of actual pump plants and the technicalities of pump units, thus providing for the versatility and thoroughness of its application.
Investigating the Potential of Tide- and Wind-Induced Currents for Renewable Energy in Northern Vietnam
Authors:   Ho Chi Minh City University of Technology, and Vietnam National University, Le Tuan Anh , Tran Huu Nghi ,   Power Engineering Consulting Joint Stock Company 2 (PECC2)
Published: February 2025

Renewable energy is increasingly recognized as the trend and future of sustainable societies. With a long coastline of 3,260 km and vast open sea areas, Vietnam has significant potential for clean energy development. This potential is not limited to wind power alone but extends to encompass a broader range of water-related energy sources. In this paper, the authors employ Delft3D software to create a comprehensive hydrodynamic model that investigates the potential of current velocities in Northern Vietnam, particularly the area surrounding Coto Island, influenced by both tidal variations and wind fields. The model's objective is to preliminarily estimate the potential area for tidal stream energy based on the average current speed. The analysis is guided by international technical criteria (EMEC 2009; IEC-TS 2015), which recommend a yearly average current speed exceeding 0.5 m/s. Preliminary findings highlight several promising locations north of Coto Island, where current speeds reach up to 1.2 m/s. Further in-depth research needs to be conducted, considering the development of tidal stream energy technologies, to explore suitable development plans for Vietnam.
Assessing the clinical applicability of dimensionality reduction algorithms in flow cytometry for hematologic malignancies
Authors: Park Min-Seung , Lee Jong Kwon , Kim Boram , Ju Hee Young , Yoo Keon Hee , Jung Chul Won , Kim Hee-Jin , Kim Hyun-Young
Published: February 2025

Objectives

Despite its utility, interpreting multiparameter flow cytometry (MFC) data for hematologic malignancy remains time-intensive and complex. This study evaluated the applicability of two dimensionality reduction (DR) algorithms, t-distributed stochastic neighbor embedding (t-SNE) and uniform manifold approximation and projection (UMAP), to MFC data of hematologic malignancy.

Methods

A total of 237 samples were re-analyzed by t-SNE- and UMAP-based gating: 80 with acute leukemia orientation tube panel, 42 with B-cell lymphoma (BCL) panel, 45 with multiple myeloma (MM) panel, 40 and 30 with measurable residual disease (MRD) panels for B-cell acute lymphoblastic leukemia (B-MRD) and MM (MM-MRD), respectively. Each result was compared to the manual gating, and sensitivity and precision were assessed using BCL and B-MRD panels.

Results

Compared to manual gating, DR-based gating demonstrated agreements over 95.0 % for all MFC panels, and quantitative correlations (ρ) exceeded 0.94. Both t-SNE- and UMAP-based gating showed a sensitivity and negative predictive value of 100 %. Also, in one sample each from the BCL and MM-MRD panels, DR-based gating identified populations that were missed by manual gating. Sensitivity evaluation showed that both t-SNE- and UMAP-based gating successfully identified MRD populations down to the lowest MRD level of 10−5.30 when applying primary-gating strategy for CD19-positive population. Precision evaluation showed coefficient of variation below 10 % across all levels.

Conclusions

This study shows that DR-based gating streamlines data interpretation and minimizes overlooked populations, demonstrating significant potential as a valuable tool in MFC analysis for hematologic malignancies.
Two approaches of arithmetic units design
Authors: Gorodecky Danila
Published: February 2025

This paper proposes two approaches to design of arithmetic units. The first approach considers the result of calculations as the system of the positive polarity Reed-Muller expansions. The second approach decomposes arithmetic operations into a set of up to 5-input Boolean functions. Standard multipliers, multipliers by modulo, and composite operations in small-bit ranges are considered. An expression for the calculation of the most significant bit of modular multiplication is represented.
Educação antirracista nas escolas brasileiras: crítica e pragmatismo em práticas pedagógicas para o ensino de sociologia escolar
Authors: Leal Sayonara , Da Silva Pereira Rosana
Published: February 2025

Este trabalho parte de duas perspectivas sócio-filosóficas que se afirmam progressistas (teoria crítica e pragmatismo) para pensar práticas pedagógicas de antirracismo no seio da disciplina de sociologia na escola. A hipótese do nosso trabalho é que o pragmatismo pode fornecer ferramentas teórico-metodológicas que complementam a perspectiva crítica em benefício do progressismo na formação instrucional de estudantes no nível básico. Na primeira parte, com base em análise documental da legislação brasileira voltada à educação antirracista nas escolas, argumentamos sobre a urgência de mediações pedagógicas de enfrentamento do racismo como problema público estrutural no país. Colocamos em diálogo o pensamento crítico de bell hooks e a abordagem pragmatista de John Dewey em relação à questão da “conscientização/investigação” do problema do racismo e da “transgressão” como postura epistemológica para o seu tratamento no quadro pedagógico de uma educação progressista, que será exposta na segunda parte do argumento. A terceira parte da nossa formulação, centramo-nos no interesse pedagógico de ferramentas educacionais que o criticismo de hooks e pragmatismo de Dewey podem proporcionar aos saberes docentes para o ensino de ciências sociais nas escolas para a construção de epistemologias democráticas a partir da forma de questionar os estudantes sobre as implicações de certos hábitos nas relações sociais como geradores de desigualdades e injustiças. Na última parte, concluímos que a colaboração reflexiva entre professores e discentes em sala de aula formam a base de um dispositivo dialógico de ensino para a conscientização de problemas societais, em laboratórios de discussões.
Saúde, família, segurança: para uma gramática moral do debate sobre cannabis medicinal
Authors: Alves Mourão Victor
Published: February 2025

O presente texto explora analiticamente o debate sobre a regulamentação do uso medicinal da cannabis/maconha colocado pelo Projet de Lei 399/2015 da Câmara dos Deputados. O estudo, inspirado pela formulação teórica de  Luc Boltanski, visa identificar eixos morais subjacentes ao debate, considerando os aspectos gerais e específicos das posições discursivas dos diferentes atores envolvidos na discussão sobre a cannabis medicinal no Brasil. A pesquisa identifica três citès principais no debate sobre a cannabis medicinal: saúde, família e segurança. Os achados apontam para considerações teóricas referentes à sobreposição de ordens morais na configuração de instituições sociais e na luta política de movimentos sociais progressistas.
Construção coletiva de uma teoria (crítica) brasileira, prático-material, democrático-popular, transformadora: uma entrevista com José Crisóstomo de Souza
Authors: Da Hora Leonardo , Maia Felipe
Published: February 2025

Essa entrevista com José Crisóstomo de Souza explora a rica interseção entre a Teoria Crítica e o Pragmatismo no contexto brasileiro, destacando as contribuições únicas do entrevistado para esse diálogo. Doutor em Filosofia pela Unicamp, com tese sobre o movimento jovem hegeliano, e professor titular aposentado de Filosofia da Universidade Federal da Bahia (UFBA), Crisóstomo é coordenador do Grupo de Pesquisa Poética Pragmática e membro do Centro de Estudos Dewey e Pragmatismo. Com uma trajetória acadêmica que inclui períodos como professor e pesquisador visitante em instituições renomadas como UC-Berkeley, New School e Universidade de Humboldt (Berlim), ele é pioneiro no Brasil ao articular o pragmatismo e a Teoria Crítica, incluindo o marxismo, em uma perspectiva inovadora. Sua abordagem, que alia o que ele considera como o melhor de Marx e do pragmatismo, e que batizou de materialismo prático-poiético, questiona abordagens tradicionais e propõe caminhos mais democráticos, práticos e enraizados na realidade brasileira.
Trabalho feminino sob o neoliberalismo: contribuições de Nancy Fraser e Silvia Federici
Authors: Bueno Enrico , Amorim Beatriz , Damas de Jesus Amorim Hoanna Késia , Damas de Jesus Marianna
Published: February 2025

A presente revisão bibliográfica trata do trabalho feminino sob o neoliberalismo a partir das contribuições de Nancy Fraser e Silvia Federici. O texto indica que, não obstante as divergências teóricas e analíticas entre as filósofas, ambas abordam a centralidade do trabalho de reprodução social para a compreensão do modo de produção capitalista. Quanto ao avanço da ideologia e doutrina socioeconômica neoliberal, as autoras tratam das contradições envolvidas na inserção das mulheres no mercado de trabalho formal sem uma concomitante superação do caráter generificado e não reconhecido do trabalho sociorreprodutivo. Abordam, ainda, os dilemas e ambiguidades do movimento feminista em face desse cenário. A fim de averiguar o tratamento dessa problemática, a bibliografia central abrange textos publicados no Brasil pelas autoras na última década, com algumas alusões a trabalhos anteriores, bem como referências a interlocutores importantes para as construções teóricas em questão.
The Politics of Criminal Law Behind the Mining Industry’s Image: Uncovering CSR Scandals in Indonesia
Authors: Basrawi Basrawi , Karim M. Said , Ilmar Aminuddin
Published: February 2025

Corporate branding through Corporate Social Responsibility (CSR) programs has become a key strategy for many mining companies in Indonesia. CSR is supposed to be a tangible manifestation of a company’s contribution to social and environmental development around its area of operation. However, in practice, CSR is often just an image tool to improve the company’s reputation without having a significant positive impact on society. This article examines the phenomenon of CSR in the Indonesian mining sector, which is often involved in scandals and manipulative practices. The research highlights various cases where mining companies fail to fulfill their social responsibilities, manipulate CSR reports, and exploit local communities. Through a qualitative analysis approach, this article reveals that CSR programs in the mining sector are more often used as a means to improve public image than to make a real contribution to sustainable development. The conclusion of this study shows the need for supervisory reforms and clear rules related to criminal sanctions for misuse of CSR funds so that CSR implementation does not only become a means of imaging, but actually has a positive sustainable impact.
Estudio de caso: una mirada a la informalidad resaltando los vínculos sociales como herramienta transformadora y sostenible de la Comuna 9, barrio La Pedregosa, Bucaramanga, Santander (Colombia)
Authors: Lizcano Prada Fabio Andrés
Published: February 2025

Este trabajo busca subrayar la creación de una idea de unidad de barrio ideal en el escenario de la ciudad, donde se contemple un equilibrio entre la densidad y la diversidad poblacional, sin descuidar las realidades de su conectividad, cohesión social y un aprovechamiento coherente del territorio. En particular, el estudio de caso logra definir la importancia de la lectura del territorio con el vínculo social para así determinar a través del diagnóstico las características de los procesos culturales de conformación, transformación y consolidación del barrio informal. En general, el proceso se enmarca en una metodología que contempla una hoja de ruta en donde se establece cómo se debe conformar el territorio, construyendo un plan estratégico de intervención sostenible que involucra la población dentro de una propuesta participativa. Seguidamente, el estudio de campo reconoce diversos componentes que muestra cómo la población esculpe un entorno conformado por un sistema natural sensible y una predisposición al cambio, ya sea espontanea o natural. Es aquí donde el análisis de la información permite establecer criterios para vislumbrar las interacciones entre el medio ambiente y las dinámicas socioeconómicas, todos ellas escrutadas a partir de un análisis lineal que involucra causa-efecto-lineamientos-estrategias. En consecuencia, la sección final expone las estrategias que conforman una propuesta que logra sacar a flote la importancia del proceso participativo e interinstitucional, con un equilibrio sostenible en el medio físico de la ciudad.
Frailty and Heart Failure: Clinical Insights, Patient Outcomes and Future Directions
Authors: Mirkowski Karol , Vellone Ercole , Żółkowska Bernadetta , Jędrzejczyk Maria , Czapla Michał , Uchmanowicz Izabella , Uchmanowicz Bartosz
Published: February 2025

Frailty is common among heart failure (HF) patients and linked to increased risk of adverse outcomes. Contributing factors include inflammation, sarcopenia and neurohormonal issues which diminish physiological reserves and accelerate the decline of health. Managing frailty in HF requires a multidisciplinary approach to address physical, nutritional and pharmacological needs. Structured exercise and dietary support can improve physical function, while careful medication management, especially with polypharmacy, reduces frailty-related risks. Telemedicine and wearable tech facilitate continuous monitoring and timely intervention, especially for those in remote areas. Future research should develop standardised frailty assessment tools specific to HF, enhancing risk stratification and personalised care. Studies on underlying mechanisms, such as inflammation and mitochondrial dysfunction, could lead to new therapies. Addressing socioeconomic factors can also improve care equity. This review summarises the mechanisms, clinical characteristics and impact of frailty on HF, highlighting challenges in treatment and opportunities for improving patient outcomes.
Cyclic life of additive 316LSI stainless steel under stress concentration conditions
Authors:   Perm National Research Polytechnic University, Ilinykh Artem , Pankov Alexandr ,   Perm National Research Polytechnic University, Sivtseva Anastasiya ,   Perm National Research Polytechnic University
Published: February 2025

The paper presents an experimental study of the cyclic durability of 316LSi stainless steel obtained using additive manufacturing technology using wire-arc welding. When welding a 316LSi plate, a promising cold metal transfer method was used. It allows minimizing the heating of the products during welding. After that, the plate was subjected to a heat treatment process to relieve residual stresses. Samples were cut from the welded plate in three different directions relative to the plane of the welded layers for low-cycle fatigue testing under tension-compression. Cylindrical samples with annular groove were made to study the effect of stress concentration on the fatigue resistance characteristics. Experimental studies were conducted at the Center of Experimental Mechanics of Perm National Research Polytechnic University. The servohydraulic testing machine MTS Landmark 370.10 was used to conduct cyclic tests. Based on the test results, the dependences of cyclic durability on the amplitude of applied stresses were constructed. The highest fatigue resistance characteristics are possessed by samples cut at an angle of 45 degrees to the surfacing plane was shown. For two of the three orientations of the samples, a comparison was made with the results of cyclic tests on samples without a concentrator by other authors. Based on the results of the comparison, effective stress concentration factors were determined. An assessment was made of the anisotropy of cyclic and static mechanical characteristics.
Development of technology for the production of parts and assembly units of liquid rockets engines by the method of fusing granules
Authors:   Chemical Automation Design Bureau, Sapozhnikov Artem , Frolova Anastasia ,   Voronezh State Technical University, Belokopytov Andrey ,   Chemical Automation Design Bureau
Published: February 2025

Modern aerospace manufacturing is constantly striving to improve the design, product quality, material intensity of products and reduce the time from development to production of the product. Laser additive technologies are suitable for achieving these goals.
The article is devoted to the actual topic – to analyze the possibility of introducing additive technologies in the processes of manufacturing parts of liquid rocket engines and other aggregates of aerospace industry products. In the work the peculiarities of manufacturing of pilot units by the method of fusion of granules of domestic production are considered and the research of parameters of used granules is carried out. The mechanical properties of alloys EC61-LS, EP810-LS and VT6S-LS with bar grade materials and vacuum-arc-smelting slabs have been evaluated.
Parts and assemblies manufactured by the traditional method were selected for approbation of the new manufacturing technology. In the process of evaluating the features of redesigning the pilot parts and assemblies, the parts-analogs with the description of technological documentation and recommendations for constructive improvement and quality enhancement were presented. According to the results of manufacturing a pilot batch of parts, the result of comparative analysis of material utilization factor and labor intensity in traditional and additive manufacturing is carried out.
The study showed that the developed and validated technology can be recommended for implementation at the enterprises of rocket and space industry.