bluuebunny/crossref_metadata_2025 huggingface dataset:
Minimally Invasive Right Infra-Axillary Approach for Mitral Valve Replacement: Our Initial Experience
Authors: Bhattarai Anil , Khakural Prabhat , Shrestha Yuna
Published: February 2025

IntroductionMinimally invasive approach for cardiac surgery is getting popular as compared to the traditional median sternotomy due to various benefits associated with the approach. Right vertical axillary approach for mitral valve replacement with peripheral cannulation was recently introduced in our center. We share our initial experience of the approach. 
MethodsA descriptive study including eleven patients undergoing minimally invasive mitral valve replacement via right infra-axillary approach from June, 2024 to October, 2024 for rheumatic mitral valve disease was conducted.  Data on patient demographics, clinical characteristics, echocardiographic findings, intra-operative variables and post-operative outcomes were evaluated. Statistical analysis was performed using Microsoft Excel 2016. Frequency, percentage, mean and standard deviation were calculated.
ResultsAmong 280 cardiac surgeries, 11 patients underwent minimally invasive mitral valve replacement in five months at our institute. The mean age of the patients was 47.63 ± 12.40 years (range 23- 62 years). Six patients were in 50-60 years age group. The majority of the patients (81.81%) were females. The main presenting symptoms were shortness of breath and palpitation. The mean Aortic cross clamp time was 81.36 ± 24.73 minutes and cardiopulmonary bypass time was 105.63 ± 32.23 minutes. There were no re-explorations and conversions to median sternotomy. There was no perioperative mortality.
ConclusionMinimally invasive mitral valve replacement through right vertical infra-axillary approach is feasible in our setting and offers favorable post-operative outcome.
Comment on Taiwo’s Construction of Marxist Natural Law Theory: Center on the Natural Law of the Mode of Production
Authors: Dong Chenguang
Published: February 2025

太渥在“物质方式”与“社会属性”相结合的意义上使用马克思的生产方式概念，主张构成这一概念所必需的“法律”关系是一种生产方式的自然法，并以此为基础建构了一种马克思主义自然法理论。然而，这种生产方式的自然法在太渥那里却与霍菲尔德的权利结构相关联。一方面，权利结构在本质上是一种观念性的概念逻辑框架，并不具有历史唯物主义法的现实性；另一方面，权利结构无法真正实现对法律上层建筑的制约作用，这与太渥一开始对马克思主义法律理论与自然法传统的本质规定相矛盾。因此，太渥的理论建构并不能获得马克思主义的承认，他将马克思主义法律理论置于自然法传统之中的融合方案终究难以自洽。
Chemical and functional properties of Some legumes available in the local market of Brack city
Authors: Akasha Ibrahim , Mohamed Fatema , Alshareef Mohamed
Published: February 2025

This study compared the chemical and functional properties of some legume seeds and their protein isolates. The results showed that Pea flour, Bean flour, and Cowpea flour contained 8.27-10.13% of moisture, Bean flour contained the highest ash percentage of 4.22% compared to Pea and Cowpea flour, while the Cowpea flour had the highest protein, crude fat and fibre levels of 32.20, 1.83 and 7.62%, respectively. The highest carbohydrate content was recorded for the bean flour (64.18%). The Bean protein isolate contained the highest levels of moisture, ash, crude fat and fibre of 6.01, 2.06, 0.63 and 0.47%, respectively. Protein and carbohydrate were recorded for the Pea protein isolate of 91.54 and 7.85%, respectively. The results of the functional properties showed that the Bean flour had the highest water and oil binding capacity of 1.730 g flour/10 ml water and 1.223 g flour/10 ml oil, and the Pea flour had the highest emulsion binding capacity of 1.837 g flour/10 ml emulsion. For the protein isolate, the Pea protein isolate showed the highest water-binding capacity (3.11 g flour/ml water) and emulsion-binding capacity (4.063 g protein/10 ml emulsion), while the bean protein isolate had the highest fat-binding capacity (0.831 g protein/10 ml oil). The effect of the pH on some protein characteristics was observed. The foam ability increased by increasing the pH from 4 to 7, and the optimum foam ability was achieved at pH (7). The results also showed that the best foam stability was at pH (7). The Pea protein isolate achieved the highest foam ability and stability compared with the Bean and Cowpea protein isolates. The results also showed that the minimum concentration required to form a gel was 12% for the Pea protein isolate and 14% for the Bean and Cowpea protein isolates.
Pedagogía ambiental: Restauración del bosque nativo y conservación de semillas de nato, roble y mangle blanco en Olaya Herrera-Nariño. Colombia
Authors: Cundumi Colorado Evergita , Minota Edilmo Franco , Useda Sánchez Edith Yohanna
Published: February 2025

El proyecto Estrategia de preservación de semillas nativas del nato, roble y mangle blanco, a partir de la reforestación del bosque nativo con enfoque participativo. El objetivo fue desarrollar procesos participativos de Educación Ambiental a través de la preservación de semillas nativas, mediante la reforestación del bosque con los estudiantes del grado cuarto de la Institución educativa Litoral del Pacífico del municipio de Olaya Herrera, departamento de Nariño, Colombia. La metodología se establece a partir del enfoque cualitativo por la aproximación a la realidad socioeducativa; la Investigación Acción se implemento con la comunidad educativa; las técnicas de observación, la entrevista y el taller participativo con estudiantes, docentes, padres de familia y sabedores. Los principales resultados identificaron los factores que inciden en los procesos de deforestación del bosque como los procesos de agricultura, la comercialización de la madera, uso indebido del bosque y factores de tipo natural. Así, se determinó la estrategia de Educación Ambiental fundamentada en una “pedagogía del árbol”. Se concluyó que los estudiantes mediante la práctica pedagógica identifican las plantas nativas y reconocen el impacto ambiental de la desforestación, dando pasos importantes para dinamizar los proceso de protección ambiental desde su entorno educativo.
Analisis Perbandingan Kinerja Keuangan Sebelum dan Sesudah Merger Pada PT. Bank Syariah Indonesia (Persero), Tbk
Authors: Karmila Mila , Handoko Pryo , Sonjaya Trisna
Published: February 2025

The purpose of this study is to find out whether there are differences in financial performance in the Capital Adequacy Ratio (CAR), Net Operating Margin (NOM), Return On Assets (ROA), and Return On Equity (ROE) between before and after the merger at PT Bank Syariah Indonesia for the 2019-2022 period. This type of research is quantitative with the research method used is descriptive comparative. The data used is secondary data in the form of the company's financial statements before and after the merger. The analytical tool used to answer the hypothesis is the non-parametric test, namely the Wilcoxon Signed Rank Test. The results of this study based on the ratio showed that there are significant differences in the ratio of PT BSI's Net Operating Margin (NOM), Return On Equity (ROE) and Return On Assets (ROA) between before and after the merger. Meanwhile, the Capital Adequacy Ratio (CAR) did not show a significant difference between before and after the merger
The role of the nursing team of the Neurosciences Group of Antioquia (GNA) in the execution of the prevention clinical trial for early-onset familial Alzheimer’s disease in Colombia
Authors: Madrigal Zapata Lucía , Madrigal Mesa Claudia Cristina , Gallego Álvarez Érika , Navarro Roldán Alexander , Betancur Jiménez Yeison , Piedrahíta Piedrahíta Francisco , Restrepo Agudelo Jenny , Aguillón Niño David , Ramos Pérez Claudia Patricia , Ríos Romenets Silvia , Giraldo Chica Margarita , Lopera Restrepo Francisco , Duque Álvarez Sindy
Published: February 2025

This paper aims to describe the experience of the nursing team at the Neurosciences Group of Antioquia (GNA) in providing care to participants in the Alzheimer’s Prevention Initiative (API) clinical trial in Colombia, highlighting the professional role of healthcare providers from a nursing perspective.
It reports on a research experience that examines the management and care provided by the GNA nursing team, framed within the principles of health promotion and disease prevention. Through this work, the team demonstrates how care becomes a professional act, grounded in the principles and standards of the nursing profession.
Síndrome de Boerhaave com evolução para mediastinite química e infecção secundária: relato de caso de um raro diagnóstico
Authors: Salem Filó Maitê , Monteiro da Silva Ricardo , Asahiti Uratani Marcelo , Magalhães Cardoso Tiago , Adriel Santos Pereira Magnum , Cruz Guttemberg Filho Francisco , Gomes Fontinelle Neto Hélio
Published: February 2025

A Síndrome de Boerhaave, uma condição rara e frequentemente fatal, foi descrita pela primeira vez em 1724 e representa cerca de 15% das perfurações esofágicas. Está associada a aumentos de pressão intraluminal após episódios vigorosos de vômito. Os desafios diagnósticos são significativos, com a tríade clássica de Mackler presente em menos de 50% dos casos. O diagnóstico precoce é crucial, pois o atraso no tratamento eleva a mortalidade para mais de 40%. Neste artigo, relatamos o caso de um paciente admitido por intensa dor em região toracoabdominal, o qual seguiu com investigação multidisciplinar diagnóstica até obtenção de desfecho cirúrgico positivo. Estas intervenções permitiram o controle da infecção e a recuperação do paciente. Após 20 dias de internação, recebeu alta sem complicações, evidenciando a eficácia de estratégias minimamente invasivas mesmo em apresentações tardias. A raridade dessa condição, associada à alta mortalidade e complexidade diagnóstica, reforça a relevância de relatos como este para aprimorar estratégias de reconhecimento e tratamento.
Migráció, munkaerőhiány, vendégmunka
Authors: Hárs Ágnes
Published: February 2025

Mind gyakrabban merül fel Magyarországon, hogy kimerültek a tartalékok, a munkaerőhiány már a termelés korlátját jelenti. E helyzetért a közgondolkodás jobbára az elvándorlást okolja, a kormányzat pedig a források bővítését keresi. Mit is jelent a munkaerőhiány? Részletesen vizsgálta a kérdést a jelenség fel erősödésének időszakában a Munkaerőpiaci Tükör 2016 Közelkép c. fejezete (Köllő szerk. 2017). Köllő és szerzőtársai (2017) hangsúlyozzák, hogy a hiány adott bérek mellett értelmezhető, s ez a pontosítás viszonylagossá teszi a munka erőhiányt, és rámutatnak arra, hogy a hiányhelyzetekre vonatkozó utalások érdekvezéreltek, s inkább panaszként értelmezhetőek. Lehet, hogy a kereslet meghaladja a kínálatot az adott bérek mellett, miközben az áralkalmazkodást és/ vagy a mobilitást különféle korlátok akadályozzák, vagy az elérhető munkások kínálata lassabban növekszik, mint a keresett munkásoké a közelmúltban jellemző bérek mellett, esetleg a politika tartja elégtelennek valamely munkaerőfajta kínálatát, valamilyen fontos társadalmi cél eléréséhez. Lehetséges természetesen a különféle hiányhelyzeteket a fentiek alapján tipizálni, az adott időszakhoz kötődő pillanatnyi hiányok alapján, de minden esetben az adott bérek mellett kialakult helyzetet látjuk. Ebben a keretben értelmezhető az elvándorlás is. A Társadalmi Riport 2016 kötetben megjelent korábbi tanulmányában Hárs (2016) mutatott rá, hogy az erősödő munkaerő hiányos környezetben a növekvő elvándorlásnak nem volt a bérek alakulására érzékelhető hatása Magyarországon. A WIIW (Wiener Institut für Internationale Wirtschaftsvergleiche) összeha sonlító adatbázisán alapuló tanulmány (Astrov et al. 2021) a kelet-közép- európai régióban általánosan tapasztalt munkaerőpiaci hiányjelenségeket vizsgálja. Eszerint a hasonlóságok mellett jól láthatóak a magyar folyamatok és a munka erőhiánnyal kapcsolatos vélekedések eltérései is. A munkaerőhiány a 2010-es évek közepétől többféle indikátor szerint je lentősnek és állandónak látszott Magyarországon. Egy vállalat tevékenysége korlátjaként érzékelhet néhány vagy akár egy hiányzó embert is (az adott bérek mellett). Az így mért, vállalati válaszokra alapozott magyar mutatók már 2014 ben kiugróak voltak, meghaladták az EU27 átlagát és a régió országaiét is.
A népességváltozás mozgatórugói a visegrádi országokban 1990 és 2020 között
Authors: Tóth G. Csaba
Published: February 2025

Magyarország az egyetlen a visegrádi országok közül, amelynek népessége évről évre folyamatosan csökkent az elmúlt évtizedekben. Ennek eredménye képpen 1990 és 2020 között az országban élők száma 10,4 millióról 9,8 millióra ( 5,8%-kal) csökkent. Ez alatt az idő alatt Lengyelországban gyakorlatilag nem változott (0,2%-kal mérséklődött) a lakosság 38 milliós létszáma, míg Cseh ország ban 10,4-ről 10,7 millióra, Szlovákiában pedig 5,3-ról 5,5 millióra (egyaránt 3,2%-kal) emelkedett a népesség a hivatalos adatok szerint. A népesség számának változása több szempontból is jelentősen befolyásolja egy társadalom életét (Mason–Lee 2022). Kihívást jelent sok más mellett a különböző korcsoportok közötti újraelosztásra épülő rendszerek miatt (pl. nyug díjrendszer, egészségbiztosítás), érinti az állami és piaci szolgáltatásokhoz kap csolódó kapacitások kihasználtságát, a természeti erőforrások felhasználásának ütemét és a klímaváltozás tempóját. Ennek megfelelően a demográfiai folyamatok alakulása gyakori témája a tudományos kutatásoknak és egyre inkább előtérbe kerül a közbeszédben itthon és külföldön egyaránt. A nyilvános diskurzusokban különösen sok szó esik a születések számának alakulásáról, illetve a nemzetközi vándorlásról, és annak hatásairól. Mindezek mellett – részben a koronavírus- járvány kapcsán – egyre gyakrabban kerül szóba a születéskor várható élettar tam alakulása, illetve hogy milyen társadalmi-gazdasági kihívásokkal jár egy társadalom számára a lakosság átlagéletkorának emelkedése.
Az európai fejlesztéspolitikai források felhasználásának hatásai a területi hátrányokra és a társadalmi kohézióra Magyarországon
Authors: Kabai Gergely , Németh Nándor , Teller Nóra
Published: February 2025

A társadalmi kohézió rendkívül sokszínű, egymással rokon ún. „hibrid” fogalmi megközelítést takar (Jenson 2010). A társadalomtudományokban elsősorban a bizalommal, együttműködéssel, társadalmi tőkével összefüggésben hasz nálják, ugyanakkor széles skálán alkalmazzák e kifejezést a szakpolitikákban is a társadalmi befogadás, a felzárkóztatás, a szociális innováció, valamint a szociálpolitika területén. A fogalom az Európai Unióban elsősorban a kohéziós politikák megszületésé vel összhangban került stratégiai szintre, amelyek megvalósulását a strukturális és beruházási alapok szolgálják. Közöttük a társadalmi kohéziót a munkahelyterem tés, a társadalmi befogadás, a szegénység elleni küzdelem, az oktatás mindenkori hívószavakkal elsősorban – de nem kizárólagosan – az Európai Szociális Alap fedi le. Magyarország 2004-es uniós csatlakozása óta a hazai terminológiában is – elsősorban az uniós szakpolitikákkal kapcsolatosan – a társadalmi kohézió fogalmának felzárkóztatás- és szociálpolitikai megközelítését használjuk. Tanulmányunkban arra vállalkozunk, hogy az elmúlt két évtized vonatkozásá ban áttekintsük, a társadalmi kohézió kérdésköre milyen hangsúllyal jelent meg az uniós fejlesztéspolitika hazai megvalósításában, ez milyen vélt vagy valós társa dalmi hatásokat tudott generálni, és mindez mennyire volt eredményes a társadalmi és területi különbségek, illetve az elmaradott települések felzár kóztatására irányult célkitűzések megvalósításában. A társadalmi kohézió és a fejlesztéspolitika kapcsolata nemcsak a hibrid fogalmi megközelítésből eredő bonyolult értelmezhetőség miatt értékelhető nehézkesen, hanem az elmúlt két évtized uniós forráskihelyezésének sajátosságai miatt is. Már a 2004–2006-os fejlesztéspolitikai ciklustól kezdődően gyakorlatilag máig ható problémát jelent, hogy a társadalmi beruházások mérésére elsősorban csak eredményindikátorok álltak rendelkezésre, és a tényleges hatások közép- vagy hosszú távú nyomon követésére nincsenek rendszerszintű és folyamatosan gyűjtött, összehasonlítást lehetővé tévő, területi bontásban is elérhető adatok. Így aztán minden későbbi értékelés, hatásmérés csak rendkívül korlátozottan vagy más, egy-egy értékelés keretén belül primer eszközökkel gyűjtött adatokra támaszkodva tudott következtetéseket levonni. Mindez azt eredményezte, hogy tulajdonképpen átfogóan ma sem lehet megállapítani, hogy uniós fejlesztés politikai eszközeink ténylegesen milyen hatást gyakoroltak a magyar társadalom rászoruló, támogatást igénylő csoportjaira.
Codifying Innovation in Learning and Teaching
Authors: Turlíková Zuzana , Otiepková Soňa
Published: February 2025

The publication focuses on profiling the challenges associated with creative thinking, interdisciplinarity, collaboration, and STEAM teaching principles. It includes methods and tools for gathering and assessing innovation challenges that arise when working with external stakeholders. The data is based on research by a European consortium of universities and reflects data collection from students, teachers, university management and external stakeholders (partners) who have been involved in the collaborations between university and external stakeholders. The publication aims to identify how the challenges of such collaborations can be identified, codified and harnessed by academics to support student leadership.

The research involved quantitative data collection through questionnaires at eight universities (the Netherlands, Germany, Italy, Iceland, Portugal, Slovakia, and Poland), which identified the advantages, disadvantages, challenges and benefits of university-practice cooperation. The emergence of innovation and the development of creative thinking during such cooperation has been investigated. The inputs were then subjected to qualitative, in-depth analysis by expert groups composed of educators, curriculum sponsors, and education experts to compile criteria for successful collaboration.

A series of recommended criteria, to be considered as a prerequisite for successful collaboration between higher education institutions and partners from practice has been identified. The publication is addressed to higher education institutions – university management, and educators, but also to external partners who have a sincere interest in building effective, innovative and socially beneficial partnerships.
Better Longitudinal SEM: Wheaton et al. 46 Years Later (Free Seminar)
Authors: Muthen Bengt
Published: February 2025

This seminar, led by renowned scholar Bengt Muthen, delves into the advancements of Structural Equation Modeling (SEM) over the past decades with a focus on a modern reinterpretation of Wheaton et al.'s seminal longitudinal study. Participants will gain expertise in applying advanced SEM techniques using Mplus, enhancing their ability to conduct robust longitudinal data analyses across various research domains.
Nonlinear Time Series Analysis (Part I)
Authors: Ricca Bernard
Published: February 2025

This intensive four-day workshop provides a comprehensive introduction to nonlinear time series analysis, focusing on state space reconstruction and identifying evidence of nonlinear dynamics, using the R software. Participants will develop skills to manipulate, visualize, and create nonlinear models of time series data, enhancing their research in any field that works with time series data.
Statistical Methods for Adaptive Treatment Strategies
Authors: Moodie Erica
Published: February 2025

This one-day workshop provides an introduction to statistical methods for adaptive treatment strategies, crucial for advancing personalized medicine. Participants will learn about single-stage and multi-stage analyses, and be equipped with skills to enhance clinical decision-making and research outcomes in their own work.
Introduction to SPSS
Authors:   Centre for Applied Statistics Courses (CASC)
Published: February 2025

This one-day seminar provides a comprehensive introduction to SPSS, equipping researchers with essential skills for data analysis, including data management, statistical testing, and result presentation. Participants will gain practical experience and insights needed to confidently apply SPSS to enhance the rigor and impact of their academic work. An official Instats certificate of completion is provided at the conclusion of the seminar. For European PhD students, the seminar offers ECTS Equivalent points.
Advanced Data Visualizations in R (Free Seminar)
Authors:   Statistical Society of Canada
Published: February 2025

This seminar introduces participants to creating aesthetic and informative visualizations using the R ggplot2 package and the Grammar of Graphics framework. The session covers foundational concepts, advanced customization techniques (e.g., scales, faceting, themes), and specialized visualizations like heatmaps and Kaplan-Meier curves, with interactive capabilities using plotly and an overview of Shiny. Via hands-on demonstrations, participants will gain practical skills to tailor visualizations for effective data storytelling and audience engagement.
Formación docente en la educación artística: Un análisis de las prácticas docentes en la educación básica primaria en México
Authors:   Universidad de Sonora, Vera Noriega José Angel , Rodríguez Carvajal Claudia Karina ,   Universidad Autónoma Indígena de México, Siles López Aldo ,   Centro de educación artística (CEDART)
Published: February 2025

La enseñanza de las artes ha sido reconocida por organismos internacionales como la UNESCO y la Organización de Estados Iberoamericanos (OEI) como un componente clave para el desarrollo integral de los estudiantes, ya que fomenta la creatividad, el pensamiento crítico y la expresión emocional (Bamford, 2009; UNESCO, 2006). En particular, la educación artística contribuye al desarrollo de competencias interculturales y sociales que son esenciales en una sociedad cada vez más globalizada (UNESCO, 2010).
En México, la integración formal de la educación artística en el currículo de la educación básica ocurrió con la implementación de la Reforma Integral de la Educación Básica (RIEB) en 2011 (Secretaría de Educación Pública [SEP], 2011). Esta reforma promovió la inclusión de competencias artísticas para todos los niveles de educación básica (preescolar, primaria y secundaria) como un esfuerzo para mejorar la calidad educativa y asegurar que los estudiantes desarrollen habilidades integrales.
ՍԽԱԼՆԵՐԻ ՈՒՂՂՈՒՄ. ԱՐԴՅՈՒՆԱՎԵՏ ՈՒՍՈՒՑՈ՞ՒՄ, ԹԵ՞ ԺԱՄԱՆԱԿԻ ՎԱՏՆՈՒՄ
Authors: Margaryan Arus
Published: February 2025

The article explores the inevitability of mistakes in language learning, stressing their role in both native and foreign language contexts. It highlights the importance of constructive error correction, considering whether, when, which, who, and how to correct mistakes. Perspectives vary, with some researchers warning that correction may have negative impacts, while others consider it to be essential. The article underscores the need for a balanced approach, emphasizing positive feedback and adapting correction methods to the learner’s level and task context.
SLOVA, STROJ I POLITIKA. Opismenjavanje radnika u privrednim preduzećima Bosne i Hercegovine u periodu obnove (1945-1948)
Authors: Hadžimusić Semir
Published: February 2025

Bosna i Hercegovina je oslobođenje 1945. godine dočekala sa razorenom privredom i infrastrukturom, ali i sa preko 70 procenata nepismenog stanovništva. Stoga, kada je u pitanju (kulturna) politika novih vlasti opismenjavanje stanovništva je stavljeno u prioritet, te je isticano da nepismen čovjek nije u stanju da pročita novine, partijske proglase, da u suštini on stoji izvan kulture, ali i izvan politike i društva uopće. Opismenjavanje je provođeno putem tečajeva za opismenjavanje stanovništva, a iste je shodno uputama ministarstva prosvjete NR Bosne i Hercegovine trebalo organizovati u svakom mjestu, zaseoku, fabrici, odnosno gdje god je bilo najmanje pet nepismenih.
Čelnici sindikalnih organizacija u privrednim preduzećima su otišli korak dalje te su isticali da ukoliko u preduzeću ima samo jedan nepismen radnik da taj problem treba rješavati sindikalna podružnica tog preduzeća. Nepismena lica nisu mogla u punom kapacitetu biti angažovana na obnovi zemlje, a posebno kada su u pitanju složeniji poslovi na obnovi infrastrukture, obnovi postojećih i podizanju novih privrednih preduzeća. Bez sticanja osnovne pismenosti nije bilo moguće pohađati stručne tečajeve za osposobljavanje za rad u privredi, industriji i saobraćaju.
U radu se donose primjeri koji najbolje sagledavaju uslove, načine, tokove i rezultate opismenjavanja u privrednim preduzećima širom Bosne i Hercegovine, uključujući tu i rudnike, ali i šumska gazdinstva. Nakon opismenjavanja grupe radnika, sindikat je preuzimao na sebe da u saradnji sa partijskim ćelijama uputi radnike na redovnu pretplatu i čitanje štampe kako bi se upoznali sa društveno-političkim tokovima. U Željezari Zenica, opismenjeni radnici su uključivani u čitalačke grupe koje su organizovane u pauzama, za vrijeme između jednog i drugog punjenja peći ili u pauzama između smjena.
Rezultati opismenjavanja objašnjeni su shodno podacima popisa stanovništva Bosne i Hercegovine od 15. marta 1948. godine.
A Numerical Thermo-Chemo-Flow Analysis of Thermoset Resin Impregnation in LCM Processes
Authors: Alotaibi Hatim , Abeykoon Chamil , Soutis Constantinos , Jabbari Masoud
Published: February 2025

This paper presents a numerical framework for modelling and simulating convection–diffusion–reaction flows in liquid composite moulding (LCM). The model is developed in ANSYS Fluent with customised user-defined-functions (UDFs), user-defined-scalar (UDS), and user-defined memory (UDM) codes to incorporate the cure kinetics and rheological characteristics of thermoset resin impregnation. The simulations were performed adopting volume-of-fluid (VOF)—a multiphase flow solution—based on finite volume method (FVM). The developed numerical approach solves Darcy’s law, heat transfer, and chemical reactions in LCM process simultaneously. Thereby, the solution scheme shows its ability to provide information on flow-front, viscosity development, degree of cure, and rate of reaction at once unlike existing literature that commonly focuses on impregnation stage and cure stage in isolation. Furthermore, it allows online monitoring, controlled boundary conditions, and injection techniques (for design of manufacturing) during the mould filling and curing stages. To examine the validity of the model, a comparative analysis was carried out for a simple geometry, in that the numerical results indicate good agreement—3.4% difference in the degree of cure compared with previous research findings.
Developing Functional Carbon-Dots Based Nanomaterials for Bacterial Inhibition
Authors: Wang Siqi , P. McCoy Colin , P. Andrews Gavin , Wylie Matthew , Ge Yi
Published: February 2025

Carbon dots (CDs) are emerging nanomaterials, attracting increasing attention due to their exceptional properties, such as good biocompatibility, environmental friendliness, versatile functionalization capabilities, and cost-effectiveness. These attributes position CDs and CD-based nanomaterials as promising candidates for various biomedical applications. This study focuses on the development of functional CD-based nanomaterials conjugated with a photosensitizer Chlorin E6 to enhance bacterial inhibition. By employing a novel microwave-assisted approach, we successfully fabricated N-doped CDs from diverse carbon sources various carbon sources (e.g. citric acid, ascorbic acid, tetraethylenepentamine (TEPA), spermidine and urea). Characterized through various analytical techniques including UV, fluorescence, FT-IR, TEM, DLS, and XRD, the resulting CDs demonstrated broad-spectrum antibacterial activities against E. coli, S. aureus, and MRSA. Remarkably, upon conjugation with Chlorin E6, these functional nanomaterials exhibited significantly enhanced antimicrobial efficacy under light exposure. At a concentration of merely 10 μg/mL, the conjugated CDs completely eradicated S. aureus and showed a substantial increase in inhibitory action against E. coli. Cytotoxicity assays on HaCaT cells indicated low toxicity, with cell viability above 80% for concentrations below 200 mg/mL. Our findings have revealed the great potential of these microwave-synthesized and photosensitizer-conjugated CDs in biomedicine, highlighting their applicability in photodynamic therapy and bioimaging. The profound antibacterial activity under light exposure opens new avenues for developing more efficient and cost-effective antimicrobial nanomaterials.
A Self-Powered Wearable Flexible Sensor Based on the Conductive Polymer PEDOT:PSS Hydrogel That can Monitor Lactic Acid Concentration in Human Sweat Using a Smartphone
Authors: Sun Jing , Chen Jianlin
Published: February 2025

Lactate in human sweat can serve as a marker for various conditions in the body. Elevated levels of lactate in sweat can indicate the intensity of exercise or physical activity. In this study, we developed a smart-phone-enabled, self-powered wearable flexible sensor based on the conductive polymer PEDOT:PSS hydrogel, capable of monitoring lactate in sweat in real time, eliminating the need for invasive blood sampling. By using the conductive polymer hydrogel as the substrate, the internal resistance of the sensor was greatly reduced, and the current signal was nearly 10 times higher than that of the traditional electrolytic cell system. The linear range of detection is from 10nM to 50mM, and the detection limit is up to 4.38nM. After the sensor was connected to the smartphone via Bluetooth, the error of the result obtained by processing the signal using the APP on the smartphone was no more than 6%. This work provides a new idea for the use of wearable electrochemical sensors in human health monitoring.
Accurate Indoor Home Location Classification through Sound Analysis: The 1D-ILQP Approach
Authors: Abdullahi Nura , Akbal Erhan , Dogan Sengul , Tuncer Türker , Erman Umut
Published: February 2025

Detecting human activities within domestic environments constitutes a fundamental challenge in machine learning. Conventionally, sensors and video cameras served as primary tools for human activity detection. However, our work is oriented towards the innovative objective of ascertaining home locations by analyzing environmental sound signals. Consequently, we compiled a comprehensive sound dataset from eight distinct locations. To enable automatic home location detection using this sound dataset, we employed a lightweight machine learning model designed with a paramount focus on precision and minimal computational overhead. At the core of our approach is the introduction of a local feature generator, referred to as the one-dimensional Improved Local Quadruple Pattern (1D-ILQP). This novel 1D-ILQP plays a central role in the feature extraction process, generating textural features from the acoustic signals. To facilitate the extraction of high-level textural features, we emulated the convolutional neural network (CNN) architecture, applying maximum pooling to decompose signals. The suggested 1D-ILQP extracts textural features from each decomposed frequency band as well as the original signal. Subsequently, we selected the top 100 features using the Neighborhood Component Analysis (NCA) technique. The final step of our model involves classification, wherein we employed a range of classifiers, including decision trees, linear discriminant analysis, quadratic discriminant analysis, Naive Bayes, support vector machines, k-nearest neighbor, bagged trees, and artificial neural networks. We subjected the results to a comprehensive evaluation, and all classifiers achieved classification accuracies exceeding 80%. Notably, the k-nearest neighbor classifier delivered the highest classification accuracy, reaching an impressive 99.75%. Our findings unequivocally demonstrate that the proposed sound classification model, based on the 1D-ILQP, has yielded highly satisfactory results when applied to the home location sound dataset.
Examination of Lane Capacity at Fully Actuated Intersections
Authors: Karabulut Nihat Can , Özen Murat , Altıntaşı Oruç
Published: February 2025

This study investigates factors influencing lane capacity at a fully actuated intersection in Mersin.This study examines the factors affecting lane capacity at an intersection in Mersin managed by a fully actuated signal control system. Capacity management provides significant advantages by reducing delays in traffic flow and alleviating traffic congestion. This can contribute to environmental sustainability goals such as reducing emissions and improving urban air quality. The study thoroughly investigates the impact of factors such as queue length, the percentage of heavy vehicles, and discharge flow rate on lane capacity. The Weighted Least Squares (WLS) technique was used for the analysis, allowing for the statistical evaluation of the data and verification of the results. The key findings of the study are as follows: The presence of heavy vehicles reduces lane capacity. An increase in queue length leads to an increase in lane capacity. There is a tendency for lane capacity to increase with a higher discharge flow rate. These findings provide important insights for decision-makers looking to develop urban transportation strategies. It is important to take such analyses and results into consideration, especially in traffic management and the creation of sustainable transportation policies.
Evaluation model of physical education teaching effect based on machine learning algorithm with biomechanical integration
Authors: Liu Xiaoli
Published: February 2025

This study aims to propose a machine learning-based approach to assess the impact of physical education instruction, integrating biomechanical principles to addressing the challenge of difficult and inconsistent result evaluation. The evaluation index system is constructed based on key factors influencing teaching quality, including teaching attitude, content delivery, instructional methods, and teaching effects, with an added emphasis on biomechanical metrics such as movement efficiency, joint kinematics, and muscle activation patterns. This paper suggests a Biomechanically Enhanced Physical Education based Dwarf Mongoose Optimization Algorithm (PE-DMOA) for the advancement of PE, leveraging ML technology and biomechanical analysis to optimize PE teaching strategies. We pre-process the physical education dataset, incorporating biomechanical data from motion capture systems, force plates, and electromyography (EMG), alongside traditional teaching metrics gathered information from 2150 students and 72 teachers across various schools, to predict learning efficiency more accurately than previous methods. With a student satisfaction rate of 95.6%, the experimental results confirm the efficiency of the evaluation model developed in this article. The study’s results show that the suggested model (PE-DMOA) is 98.5% accurate. This means that it helps to look into the effects of machine learning and biomechanics on physical education teaching and gives good recall, accuracy, and precision results. Educators and learners can utilize the PE-DMOA evaluation model to enhance the quality and efficiency of instruction, streamline administrative tasks, and advance the scientific, standardized, and specialized delivery of physical education in classrooms.
Design and effectiveness of a physical education teaching platform using virtual reality technology and insights from biomechanics
Authors: Cui Yuhong , Li Yanfeng , Zhang Ming
Published: February 2025

To enhance the effectiveness of physical education and improve students’ learning experiences, this work explores the design of a physical education teaching platform system based on Virtual Reality (VR) technology. First, a VR-supported physical education system is constructed and project-based learning and Science, Technology, Engineering, Arts, and Mathematics (STEAM) educational concepts are innovatively integrated into the design of the system’s objectives and teaching content. The system’s functionality and performance are tested across various VR devices. The results indicate that the devices consistently and effectively support the operation of the VR system, providing reliable technical support for physical education activities. Additionally, taking tennis teaching as an example, a comparative experiment was conducted on college students in the experimental group and the control group to assess the impact of the VR system on students' tennis skills and learning attitudes and to explore how VR affects biomechanical performance in physical activities such as tennis. The visual cues of the ball's trajectory and speed can influence a player's anticipatory muscle activation and movement initiation. Through repeated exposure to different ball flight patterns in VR, players can develop more accurate muscle recruitment strategies. The kinematic chain of movements in tennis, from the feet to the torso, arm, and racquet, can be analyzed and optimized with the help of VR. It allows players to visualize and correct any inefficiencies or incorrect biomechanical sequencing. The results show that after the intervention, the experimental group achieves an average score of 91.8 in tennis skills, compared to 83.8 in the control group, with a p-value of < 0.001. In terms of overall learning attitude, the experimental group has a mean score of 4.04, while the control group scores 3.22, with a p-value < 0.001. These findings demonstrate that, compared to traditional teaching methods, VR-based teaching more effectively improves students’ tennis skills and learning attitudes. The results of this work provide theoretical support and practical guidance for the application of VR technology in physical education, contributing to the improvement of teaching quality and effectiveness.
Analysis of Nursing Care in Mr. M with Hypertension and the Application of Benson Relaxation Therapy
Authors: Riswandi Aditya , Wahyudin  , Sugih Permana Gin Gin
Published: February 2025

Age-related changes in the cardiovascular system are one of the leading causes of various health problems among the elderly, particularly hypertension. Hypertension is a major risk factor for several cardiovascular diseases, including coronary heart disease, heart failure, pulmonary heart disease, cardiomyopathy, stroke, and kidney failure. Non-pharmacological treatments, such as Benson's Relaxation Therapy, have shown promise in managing hypertension by reducing blood pressure through relaxation techniques. This case study aims to explore the application of Benson's Relaxation Therapy as an intervention for hypertension in elderly patients with cardiovascular disturbances. The purpose of this case study is to provide an overview of the implementation of Benson's Relaxation Therapy as an intervention for hypertension and its impact on cardiovascular health in elderly patients. A descriptive case study design was used, which included anamnesis, observation, physical examination, and medical records review. The nursing care process was based on evidence-based practice (EBP) principles. The case involved a patient diagnosed with hypertension who was treated with Benson's Relaxation Therapy. The nursing interventions were analyzed in relation to hypertension management and its effects on the cardiovascular system. The study found that the patient presented with nursing diagnoses including acute pain, impaired physical mobility, and fall risk, with the primary issue being acute pain caused by elevated blood pressure. Benson's Relaxation Therapy was applied and led to a reduction in blood pressure over three therapy sessions. This empirical evidence suggests that Benson's Relaxation Therapy is an effective intervention for managing acute pain associated with elevated blood pressure in hypertensive patients. Therefore, it can be concluded that Benson's Relaxation Therapy is effective in lowering blood pressure in hypertensive patients in the Dahlia Room of Griya Lansia, Garut Regency. The application of Benson's Relaxation Therapy has proven to be effective in reducing blood pressure in hypertensive patients in the Dahlia Room of Griya Lansia, Garut Regency, Indonesia.
EXAMINING THE IMPACT OF FINTECH ON SUPPLY CHAIN OPTIMIZATION AND FINANCIAL MANAGEMENT IN MATERIALS ENGINEERING PROJECTS IN THE DIGITAL AGE
Authors: Ahmadzadeh Seyed Ali
Published: February 2025

This research investigates the impact of financial technology (fintech) on supply chain optimization and financial management in materials engineering projects. In the digital age, fintech is recognized as a driving force in transforming financial and logistical processes, helping to improve efficiency and reduce costs. Based on the analyses conducted, all research hypotheses have been confirmed: Financial technology has a significant positive impact on supply chain efficiency. Supply chain efficiency has a significant positive impact on customer satisfaction. And Supply chain innovation also has a significant positive impact on financial management.
These results highlight the importance of financial technology and innovation in improving supply chain efficiency and customer satisfaction. The findings of this research can enhance understanding of how financial technologies affect the performance and sustainability of engineering projects. Additionally, this study provides solutions for optimizing financial and logistical processes in the supply chain and can serve as a valuable resource for researchers, project managers, and policymakers in international journals. Given the increasing importance of fintech in the industry, this research can be a reference for future studies and improvements in management practices in materials engineering projects.
Servicios para el empleo postindustrial: balance para el cambio de época
Authors:   Universidad Autónoma de Barcelona, Acebillo Pedro Miguel , Rojo Maravillas ,   INEM-Barcelona
Published: February 2025

El empleo es un factor clave de cohesión social, a la vez que un bien escaso tanto en el corto como en el medio plazo, que se está transformando de forma cualitativa y cuantitativa de tal forma, que ya podemos hablar de un período en decadencia caracterizado por el empleo de carácter industrial, frente a un período emergente que llamamos de la información, caracterizado por un tipo de empleo muy diferente. A la nueva situación debe corresponderle un nuevo tipo de servicios públicos para el empleo, capaces de convivir en la diversidad, la descentralización, y de responder con estrategias locales. Desde el nuevo marco de la reforma laboral, los servicios de empleo precisan trabajar demandantes muy heterogéneos, con un itinerario personal hacia el empleo que contiene actividades de información, orientación, calificación profesional, formación, y de acompañamiento en la búsqueda de empleo o en la creación de su propio puesto de trabajo.
El debate actual sobre la reducción y reorganización del tiempo de trabajo
Authors:   Universidad París Dauphine, Taddéi Dominique
Published: February 2025

Esta ponencia proporciona una visión general sobre los beneficios y las dificultades que conllevan los procesos de reducción y reorganización del tiempo de trabajo. Se centra en los principales resultados de las simulaciones realizadas en esta materia, poniendo de relieve las enseñanzas que se derivan a nivel macroeconómico y microeconómico para la política de empleo.
Reducción de la jornada laboral en Alemania Occidental y su repercusión para la política de empleo
Authors:   Economic and Social Research Institute Hans-Böckler Foundation. Düsseldorf, Rosdücher Jörg , Seifert Hartmut ,   Economic and Social Research Institute Hans-Böckler Foundation. Düsseldorf
Published: February 2025

La jornada laboral en Alemania se sitúa hoy en día en uno de los niveles más bajos de Europa. Los sindicatos alemanes han apostado con fuerza por la reducción del tiempo de trabajo como instrumento para combatir el desempleo. Junto a las paulatinas reducciones de jornada establecidas mediante convenio en los últimos diez años, recientemente y siguiendo el ejemplo de Volkswagen, han surgido nuevas formas de reducciones temporales y más drásticas con el objetivo de mantener el empleo en empresas amenazadas por la crisis. En este trabajo se abordan ambos tipos de medidas y se valoran desde el punto de vista de la política de empleo.
'Aspectos económicos y fiscales de la política de tiempo de trabajo en Alemania
Authors:   Instituto Alemán para la Investigación Económica (DIW), Stille Frank
Published: February 2025

Esta ponencia trata sobre la política de tiempo de trabajo desarrollada en Alemania en los últimos años y esboza algunas claves sobre su efectividad en términos de empleo. Más específicamente, se evalúan las implicaciones económicas y fiscales de los diferentes elementos que integran esta política: la reducción generalizada del tiempo de trabajo regular, el trabajo a tiempo parcial, las jubilaciones anticipadas, la jornada laboral reducida, así como los acuerdos empresariales específicos "a la Volkswagen" para la defensa del empleo.
La experiencia holandesa
Authors:   Comisión de las Comunidades Europeas, Van Zonneveld Herman
Published: February 2025

Holanda se caracteriza por una fuerte implantación del trabajo a tiempo parcial, y aquí reside precisamente una de las claves del favorable comportamiento del empleo en este país respecto al conjunto de la Unión Europea. Entre las razones que están detrás del espectacular desarrollo del trabajo a tiempo parcial se encuentran la no discriminación de estos trabajadores en relación a los asalariados a tiempo completo y la progresividad del sistema fiscal, pero sobre todo hay que destacar la actitud de los trabajadores y empresarios en favor de este tipo de trabajo.
Liberdade de expressão, isegoria e verdade: a tensão entre democracia e república na política moderna
Authors: Galuppo Marcelo Campos
Published: February 2025

Apesar de a vontade ser reconhecida como fundamento das democracias, o bem comum parece colocar um limite àquilo que nelas se pode argumentar. No entanto, essa posição esbarra na impossibilidade de acessar racionalmente o bem comum sem a mediação da linguagem, como parece presumir certa perspectiva fundacionalista e republicana. Por isso uma ampla liberdade de expressão parece estar pressuposta nas democracias modernas. Este artigo pretende demonstrar como a antiga tensão entre vontade e bem comum, entre democracia e república, se reflete no pensamento político moderno. Serão analisados o problema da liberdade de expressão na democracia, o conceito de democracia em Atenas e sua recepção na modernidade para verificar como a teoria coerentista da verdade pode auxiliar na compreensão dos limites da perspectiva republicana e do consequente papel da liberdade de expressão nas democracias modernas
Peran Kader Posyandu dalam Pemeriksaan Kesehatan Balita di Dusun Sungai Belit Desa Sejahtera Kecamatan Sukadana Kabupaten Kayong Utara
Authors: Hikmah Dinda Mutiara
Published: February 2025

This research aims to determine the factors that limit parental involvement in children's health checks at Posyandu Sakura Putih, as well as the role of Posyandu cadres in improving the health of children under five at that location. The research was conducted in Sungai Belit Hamlet, Sejahtera Village, Sukadana District, North Kayong Regency, using a qualitative descriptive research method involving parents, village midwives and posyandu cadres. Research findings identified three main barriers related to parental involvement, namely lack of information about the importance of health checks, limited posyandu facilities, and lack of government supervision. Meanwhile, the role of posyandu cadres includes health checks for toddlers, dissemination of health information, home visits and health education to the community to increase awareness and understanding of children's health.