bluuebunny/crossref_metadata_2025 huggingface dataset:
3D-printed microfluidic cell culture devices and hydrogel integration: Trends, challenges and solutions
Authors: V. Meyer Katharina , Winkler Steffen , Bahnemann Janina
Published: November 2024

3D cell cultures are increasingly being used in a variety of contexts – including for drug discovery, disease modelling, and tissue engineering – because they offer the potential to increase physiological relevance compared to traditional monolayer cultures, while simultaneously also reducing cost and time compared to in vivo models. Taking a cue from nature, researchers often create 3D cell cultures using hydrogels which can closely mimic the extracellular matrix that most mammalian cells are surrounded by in vivo. However, aside from the collective physical 3D arrangement itself, the physiology of the culture depends highly on the microenvironment, which is defined by the 3D cell culture shape and the complex combination of biochemical, biophysical and biomechanical stimuli. Microfluidic devices offer researchers the tantalizing opportunity to precisely define and influence this microenvironment. Furthermore, they additionally allow for integration of external functional components for active stimulation and monitoring of cultured cells. Pushing for ever-more-realistic culture conditions has, however, increased the complexity that is required of these microfluidic culture systems, which makes their fabrication more difficult. In this regard, 3D printing is becoming an increasingly popular solution, since it offers researchers not only the ability to fabricate highly complex structures but also to benefit from rapid prototyping and customization of existing designs. This review discusses common challenges that researchers face today when integrating hydrogel embedded cells into 3D-printed microfluidic cell culture devices, and seeks to offer a comprehensive overview of recent advancements aimed at addressing these challenges.
Improved osseointegration and segmental stability of 3D-printed porous tantalum cages with micro-scale structures for spinal fusion
Authors: Liang Hang , Tu Jingyao , Wang Bingjin , Wang Kun , Feng Xiaobo , Hua Wenbin , Li Shuai , Chen Xinyi , Tan Lei , Yang Cao
Published: November 2024

Spinal fusion surgery is an effective therapy for patients with disc herniation and degenerative disc disease. In this procedure, the intervertebral cage plays a key role in reconstructing stability and achieving fusion, yet its clinical efficacy is limited by inadequate osseointegration. In this study, we developed a tantalum (Ta) cage featuring micro-scale roughness and a porous microstructure, using advanced 3D printing techniques. The aim of the study was to investigate its osteogenic potential in vitro and intervertebral fusion capability in vivo. Compared with conventional PEEK cages, in vitro biological experiments demonstrated that the 3D-printed porous Ta (3D-pTa) cages significantly enhanced osteoblast adhesion, proliferation, and differentiation. In vivo spinal fusion studies in a goat model demonstrated significant increases in bone-implant contact and bone volume to total volume ratios (P < 0.05) with the 3D-pTa cages, indicating marked bone ingrowth and effective spinal fusion. Additionally, mechanical tests revealed that the 3D-pTa cages provided consistent stability and stiffness, significantly reducing range of motion (ROM) at various time points (P < 0.05). Our findings indicate that the 3D-pTa cage effectively facilitates bone fusion and possesses reliable biosafety, highlighting its potential for future clinical application in spinal surgery.
Biomimetic tracheal development with interspersed cartilage and vascularized connective tissue via 3D bio-printing technique for prompt segmental tracheal reconstruction
Authors: Wang Pengli , Wang Ziming , Li Bohui , Xie Lei , Guo Liang , Xu Yong , Li Dan , Yi Jiaoyu , Bo Tao
Published: November 2024

Segmental tracheal reconstruction remains a significant clinical challenge due to the lack of ideal tracheal substitutes. 3D bio-printing technique offers a promising revenue for the development of native-like tracheal substitutes. However, several challenges remain to be addressed, including deformation of 3D-printed C-shaped cell-laden hydrogels, fusion of regenerated C-shaped cartilage, and difficulty in regenerating vascularized connective tissue. Herein, we utilized 3D printing techniques to fabricate C-shaped chondrocyte-laden GelMA/PCL (CcGP) and S-shaped PCL chains (SPC). These were assembled into the SPC-CcGP construct, followed by mold casting (VEGF@GelMA) to establish tissue-engineered tracheal construct (TETC). In vitro experiments confirmed the stable chondrogenic potential of CcGP and the angiogenic capability of VEGF@GelMA. Subcutaneous in nude mice and orthotopic transplantation in rabbit model further demonstrated that the TETC could achieve stable regeneration of cartilage and vascularized connective tissue. The engineered trachea could maintain luminal patency following promptly repair of rabbit tracheal defects. This study offers a promising approach for developing engineered tracheas with regenerated cartilage and vascularized connective tissue for prompt and effective segmental tracheal defect repair.
Projection algorithm and its optimizations for computed axial lithography: a review
Authors: Sun Jian-Su , Wang Di , Zhang Xue , Jiang Haiyue , Xie Maobin , Lü Jia-Qi
Published: November 2024

Volumetric additive manufacturing is a novel additive manufacturing method, offering advantages such as fast printing speed and isotropic mechanical properties. As the important branch of volumetric additive manufacturing, computed axial lithography based on the azimuthal projections and rotational printing has attracted great attentions and been widely used in recent years. Here, we focus on the projection algorithms of computed axial lithography, which is critical to the printing quality including its fidelity and accuracy. Different optimization methods including iterative optimization of projection space and objective model, optimization for the optical influences of materials and the optimizations cooperating with hardware upgrade are summarized. The features and advantages of different projection optimization algorithms are also analyzed and discussed, which may promote the applications and development of volumetric additive manufacturing.
Parametric computational modelling of melt electrowritten scaffolds: Predicting the cellular micromechanical environment for gradient tissue engineering in rotator cuff repair
Authors: E Winston Sam , Pezzanite Lynn , Dow Steven , C. McGilvray Kirk
Published: November 2024

Surgical interventions of the rotator cuff (RC) tendons are failing at unacceptably high rates. This is primarily due to clinical strategies failing to regenerate the biomechanical junction between bone and tendon (enthesis). Tissue engineering approaches for RC repair involve attempts at increasing the acute strength of the repair and directing the healing cascade to regenerate the enthesis. Advances in bioprinting, specifically melt-electrowriting (MEW) allow precise fabrication of microarchitectures. Our group has utilized the functionality MEW offers to create a novel, single-material, gradient scaffold that approaches the mechanical gradients present in the RC. To characterize this novel geometry, high-throughput, parametric finite element analysis (FEA) models were generated: 1) determine how tunable print parameters such as the radius (R) of curvature of fibers, the fiber diameter (FD), and the fiber spacing (FS) alter the gradient present in the scaffold’s architecture and 2) predict, at the cellular level, what strain the scaffold generates regionally to ‘instruct’ the local cell milieu to producing healthy tissues (e.g. bone, tendon). FEA models predicted that mechanical gradients in the scaffold approached gradient levels seen in the RC (~2 orders of magnitude). In which global strain gradients were driven by R. Additionally, our novel architecture significantly affected regional mechanics, which could be optimized for tenocyte and osteoblastic bioactivity. The data presented demonstrates a novel, tunable architecture capable of approaching biologically relevant gradients observed in the RC with potential to address the clinical problems associated with tendon-bone repairs in other regions of the body using only a single material. 
Investigation of hydrogenase enzymes and the presence of orthologs in the human proteome
Authors: Russell Grace
Published: November 2024

Hydrogenase enzymes catalyze the reversible oxidation/reduction of hydrogen (H2) and play a crucial role in microbial energy metabolism, with significant implications for human immunity. H2, produced by gut microbes during fermentation or administered exogenously, is vital in modulating oxidative stress and inflammation. In the gastrointestinal tract, microbial H2 production can reach up to 13 L/day, with approximately 71% of commensal bacteria capable of metabolizing H2. By interacting with complex I, particularly the NDUFS7 subunit, H₂ may reduce mitochondrial electron leakage and limit the generation of reactive oxygen species (ROS). Excessive ROS can trigger pro-inflammatory signaling and impair immune responses. This study investigated the presence of hydrogenase orthologs in the human proteome, particularly within mitochondrial complex I, and their potential role in immune function. This novel research highlights a possible evolutionary link between microbial hydrogenases and human immunity, suggesting that microbial-derived H2 may support immune homeostasis by mitigating oxidative stress and inflammation. Although human homologs of nickel/iron hydrogenases, such as NDUFS2 and NDUFS7, likely lack classical hydrogenase activity, sequence similarities between NDUFS7 and hydrogenase subunits in Asgard archaea and δ-proteobacteria indicate the conservation of potential redox-active sites. Redox activity, occurring at the N2 iron-sulfur cluster in NDUFS7, may influence mitochondrial oxidative stress responses, which are integral to immune regulation. These findings open new avenues for exploring the therapeutic potential of H₂ in immune regulation.
Kemampuan Menulis Teks Negosiasi Dengan Menggunakan Model Problem Based Learning (PBL) Tipe Pair Check Oleh Siswa Kelas X SMA Swasta Pelita Pematangsiantar
Authors: Netti Marini  , Turnip Berlian R
Published: November 2024

Penelitian ini bertujuan untuk menjelaskan dan mengukur bagaimana kemampuan menulis teks negosiasi siswa kelas X SMA Swasta Pelita Pematangsiantar dengan menggunakan model problem based learning (PBL) tipe pair check. Penelitian ini merupakan penelitian kuantitatif dengan menggunakan motode korelasional, simpulkan metode yang digunakan dalam penelitian ini menggunakan metode kuantitatif dengan pendekatan korelasional. Metode korelasional berhubungan dengan metode eksperimen. Teknik pengumpulan data yang digunakan oleh peneliti yaitu dengan menggunakan tes. Penelitian ini mengolah data dengan menggunakan Teknik korelasional  Product moment . Hasil data pre-test (variable X ) dengan nilai rata-rata 68,47. Hasil data post-test (variable Y) dengan rata-rata nilai 77,46. Besarnya koefisien korelasi 5,9 yang ditafsirkan  peingkat korelasi sedang. Hasil pengujian tersebut jika dibandingkan dengan ttabel sebesar  2,000 maka thitung >ttabel, jika thitung > ttabel, maka Ha diterima kebenarannya dan Ho ditolak
Pengaruh E-Service Quality Terhadap Repurchase Intention Pada Aplikasi Mcdonald’s Dengan Costumer Trust Sebagai Intervening
Authors: Fazil Muhammad Muazri , Saputri Marheni Eka
Published: November 2024

Penelitian ini merupakan penelitian yang mengkaji hubungan sebab-akibat atau asosiatif kausal yang bertujuan untuk mengeksplorasi pengaruh antar variabel e-service quality terhadap repurchase intention pada aplikasi McDonald’s dengan costumer trust sebagai variabel intervening, baik pengaruh langsung dan pengaruh tidak langsung. Metodologi penelitian menggunakan path analysis dengan menggunakan pendekatan kuantitatif. Populasi penelitian ini adalah pengguna aplikasi McDonald’s di kota Bandung dengan 385 responden yang diambil melalui penyebaran kuesioner online melalui media sosial sebagai sampel. Teknik pengambilan sampel pada penelitian ini menggunakan non-probability sampling dan data diolah menggunakan aplikasi IBM SPSS Statistic 26. Hasil penelitian menunjukkan bahwa terdapat pengaruh langsung e-service quality terhadap costumer trust dengan nilai koefisien jalur sebesar 0,784, costumer trust memberikan pengaruh langsung terhadap repurchase intention dengan nilai koefisien jalur sebesar 0,440, e-service quality memberikan pengaruh langsung terhadap repurchase intention dengan nilai koefifisen jalur sebesar 0,562, dan e-service quality memberikan pengaruh tidak langsung terhadap repurchase intention dengan costumer trust sebagai variabel intervening dengan nilai koefifisen jalur sebesar 0,796 pada aplikasi McDonald’s. Berdasarkan hasil penelitian disimpulkan bahwa variabel e-service quality dan costumer trust memberikan pengaruh secara parisial dan simultan terhadap repurchase intention, dan pengaruh variabel e-service quality lebih tinggi tingkat signifikansinya apabila melibatkan variabel costumer trust sebagai intevening
THE INFLUENCE OF CAPTURE FISHERIES ZONES AFTER THE EXISTENCE OF LAW NO. 23 OF 2014 (STUDY AT ASAHAN DISTRICT FISHERIES SERVICE)
Authors: Siregar Emiel Salim , Tanjung Indra Perdana
Published: November 2024

ABSTRACTA capture fisheries zone is a sea area designated for special management and regulation to protect and maintain the fisheries resources within it. This concept includes strategies to limit fishing activities, implement sustainable fishing technology, and empower local communities to be involved in fisheries resource management. The influence of the capture fisheries zone in Asahan following Law No. 23 of 2014 in which the Asahan district fisheries service provides guidance, provides assistance to fishermen and socializes the capture fisheries zone twice a year to always remind the people of Asahan district about capture fisheries. These obstacles such as overfishing, illegal fishing, climate change and others require strong commitment and cooperation between regional governments, central government, local communities and other stakeholders. Counseling, active community involvement, increasing local capacity, as well as good and sustainable implementation of policies and regulations are the keys to overcoming these obstacles.Keywords:  Zone, Fisheries, Catch, Asahan Regency
Legal Consequences for Parties Bound by Employment Agreements That Are Not in Accordance with Company Regulations At PT Banyuasin Nusantara Sejahtera
Authors: Hakikie Ananda , Emirzon Joni , Latif Mahfuz Abdul
Published: November 2024

Work agreements in a company must comply with company regulations but company regulations come into effect after being ratified by the Minister of Manpower or an appointed official. The formulation of the problem in this study is 1) What are the legal consequences for parties bound in a work agreement that are not in accordance with Company Regulations at PT Banyuasin Nusantara Sejahtera?; and 2) What is the legal settlement if a dispute arises due to a work agreement that is not in accordance with Company Regulations at PT Banyuasin Nusantara Sejahtera? The research method used is normative juridical research method. The data used in this research is secondary data. Based on the results of the study, it shows that 1) The legal consequences for parties bound by a work agreement that are not in accordance with Company Regulations at PT Banyuasin Nusantara Sejahtera are null and void by law and apply according to the provisions stipulated by. Legislation because the contents of the work agreement must not conflict with applicable company regulations and if there are conflicting provisions; and 2) Legal settlement if a dispute occurs due to a work agreement that is not in accordance with Company Regulations at PT Banyuasin Nusantara Sejahtera, namely Mediation, Conciliation and Arbitration
Efeito do fogo sobre a estrutura e composição da comunidade vegetal em paleo-levees, Pantanal, Brasil
Authors: Da Silva Rosa Helena , De Matos Martins Pereira Alexandre , Oliveira da Rosa Maxwel , Da Silva Arruda Anny Grazielly , Scremin-Dias Edna , Dias Felipe Augusto , Leme Klabin Roberto Luiz , Buhrke Haberfeld Mario , Fabbri Luciana , De Matos Nogueira Julia , Pott Arnildo , Arruda Rafael , Alves Damasceno Junior Geraldo
Published: November 2024

O Pantanal é um bioma brasileiro dependente do fogo. Tanto o pulso de inundação anual como os eventos de fogo são importantes drivers que condicionam a estrutura das suas formações vegetais. Dentre as fisionomias do bioma encontram-se os paleo-levees, que são antigas formações de vegetação ciliares associadas a canais de rios abandonados conhecidas como cordilheiras. Esses ambientes, quando atingidos por fogo, podem ter estrutura e composição de espécies alteradas. Muitas árvores do Pantanal são adaptadas ao fogo e às inundações, entretanto, incêndios de alta intensidade podem resultar em impactos adicionais na estrutura da vegetação. Dessa forma, conduzimos um estudo em áreas de levees no Refúgio Ecológico Caiman após o incêndio de 2019. Investigamos como a estrutura e composição das espécies podem ser afetadas pelo fogo. O estudo mostrou que há diferenças na composição das espécies entre áreas queimadas e não queimadas, atribuídas ao histórico de incêndios nas áreas analisadas. A área não queimada está sem queimadas há mais de 25 anos, enquanto a área queimada passou por incêndios em 2007 e 2019. Embora não tenha sido observado diferenças significativas em riqueza, abundância, área basal e diversidade, constatamos que o fogo afeta a composição das espécies. Foi observada resiliência em espécies como Curatella americana e Attalea phalerata, que mostram capacidade de regeneração após incêndios. Os resultados indicam que a vegetação das áreas de cordilheiras do Refúgio Ecológico Caiman é resiliente ao fogo, destacando a importância dessas áreas no manejo integrado do fogo, já que, mesmo se afetadas, não sofrerão grandes mudanças estruturais.
Preservice Teachers and School Health and Wellness
Authors: Ireland Alana , Hill Laurie , Twomey Sarah
Published: November 2024

While health and wellness education can positively impact preservice teachers’ beliefs and attitudes and the students they teach, barriers exist for preservice teachers in taking on this role, including a lack of formal education. We conducted semi-structured interviews with 11 preservice teachers to determine the perspectives of preservice teachers about health and wellness in school settings and their teacher education program. In our findings, we identified four themes, including (a) teachers are health and wellness role models, (b) preservice teachers need and want more health and wellness preparation, (c) health and wellness ought to be viewed holistically, and (d) responsibility for health and wellness comes from the top down. The themes identified suggest particular areas of need, including more information at the course level in teacher education programs and prioritizing health and wellness at the provincial, divisional, and school levels. We suggest that a systemic perspective that promotes collaboration among teachers, administrators, schools, and teacher education programs is necessary in order to ensure consistent application of evidence-based practice.
Keywords: preservice teachers, wellness, health, health promotion, schools, teacher education
Modeling of the uncertainty of statistical data by p-boxes in the analysis of the reliability of building roof structures
Authors: Soloveva Anastasia A. , Smirnov Vladimir A. , Solovev Sergey A.
Published: November 2024

The article describes a problem of uncertainty modeling of statistical data in the problems of structural reliability analysis. There are elements of subjectivity in decisions making about the type of distribution of a random variable and its parameters on the analysis of the results of numerical experiments and real tests of control samples of steel on yield strength. As an alternative to the cumulative distribution function it is proposed to use p-box as a model of a random variable. The new type of a p-box is proposed on the basis of the Dvoretzky–Kiefer–Wolfowitz inequality, which allows to form the area of possible cumulative distribution functions without base on classical probability distributions. By the example of reliability analysis of a steel structural element, the variants of using different p-boxes are shown depending on the available statistical data. The probability of no-failure is presented in interval form based on p-boxes. If the result of reliability analysis by the lower boundary does not allow to make a decision about the safety level of a structural element, two options are possible: to reduce the uncertainty of the data by conducting additional statistical researches or to increase the cross-sectional area of the structural element.
Analysis of oscillator damping under real seismic impact
Authors: Khamraev Salim S. , Sanginov Abdusamad M.
Published: November 2024

Introduction. This paper presents the processing and investigation of real seismic data in order to study the impact spectra and response of the oscillator at various damping levels.
The aim. Determination of the maximum, practically significant damping percentages using an informative, simple technique based on the amplitudes of the reaction spectra.
Materials and methods. Accelerograms were processed using Microsoft Excel and SeismoSignal software from SeismoSoft.
Results. A spectrum (impact spectrum) was constructed for each direction, and the total spectrum was calculated using the «Square Root of the Sum of Squares (SRSS)» method. The response spectrum of a system with one degree of freedom (oscillator) was compared with the impact spectrum. The total response spectra were calculated using three methods, and based on the analysis, the most acceptable one was identified. To analyze the damping properties, a family of spectral curves with different damping percentages was constructed for each axis. The maximum damping percentages, which are of practical importance, were determined using a developed technique based on the analysis of the maximum amplitudes of the response spectra.
Conclusions. It follows from the obtained results: the maximum values of the spectral power densities of impacts and reactions are different for periods in all three directions; the maximum damping percentages are different for each of the directions.
Features of the design solutions of high-rise buildings of the trunk-hanging bearing system
Authors: Svitlik Ilia V.
Published: November 2024

The construction of high-rise buildings in conditions of dense urban development in the 1960s led to the introduction of a structural system of high-rise buildings with a load-bearing core. One of its varieties is the suspension system, which was implemented during the construction of unique facilities around the world. Many suspended buildings have become part of the architectural heritage of major cities such as Mexico City, Johannesburg, London, Vancouver and Hong Kong. The main advantage of high-rise buildings of the trunk-suspended type is the rational use of urban space. At the same time, the implementation of such objects is technically difficult. The calculation methods that existed at that time could not determine the behavior of suspended structures under seismic influences. This prevented the widespread use of the suspension system in the construction of high-rise buildings in the past. Modern methods of calculating mathematical models and modern computing systems make it possible to perform complex tasks in the field of dynamic linear and nonlinear oscillations, in particular oscillations of suspended structures of high-rise buildings. This leads to a renewed interest in suspended high-rise buildings. The accumulated experience in the design and construction of these buildings should be used in new projects including those being built in seismically active areas. This article presents an analysis of the design solutions of some high-rise buildings with rigid core and assessment of the seismic resistance of such buildings.
The experience in using of anchorage load indicators in mine conditions
Authors: Yurchak Ksenia Yu. , Frolov Vitaly M. , Remizov Stanislav V. , Karpov Vladimir N.
Published: November 2024

The article reflects the principle of operation of load indicators to monitor the operable and safe condition of the anchorage of mine workings. The experience of using IN(H), IN(C), together with indicators of displacement of roof rocks during the formation of dismantling chambers in the conditions of LLC "Shakhta Uskovskaya" and LLC "Shakhta Yuzhnaya" Branch of JSC "Chernihiv" is considered. The effectiveness of anchor load indicators under dynamic influences depends on several factors, including the type of indicator used, anchor characteristics, and operating conditions. Anchors designed to operate under high dynamic loads must be designed taking into account possible vibrations and impacts. In some cases, it may be advisable to use a combination of load indicators with other monitoring methods, such as vibration analysis or thermography, to get a more complete picture of the condition of anchors under dynamic loads. Anchor supports equipped with indicators can better cope with the dynamic loads that occur during earthquakes. Monitoring systems can help in assessing how effectively the anchorage holds the structure in conditions of seismic activity. Based on the data obtained from the indicators, it is possible to improve the methods of designing and installing anchor supports, which will ultimately increase their efficiency and safety.
Aim of the article is to study the influence of various factors on the strength and stability of anchorage in mine conditions. The proposal of methods and technologies for the use of load indicators that allow timely detection of changes in the state of the support. Formulation of recommendations for improving the safety and efficiency of anchorage operation based on the data obtained.
Materials and methods. Within the framework of this work, standard methods for determining loads during deformation are used. The main material was obtained during the pilot operation of the anchor support in mining conditions.
Experimental Studies of the Digital Twin of Plant based on Ontologies and Multi-Agent Technologies
Authors: Skobelev Petr , Tabachinskiy Aleksey , Strizhakov Anatoly , Kudryakov Evgeny , Simonova Elena
Published: November 2024

The article discusses the results of research achieved in the field of developing an intelligent digital twin of plants (DTP). An ontological model of the crop production process is proposed, and expanded by including descriptions of physiological and technological factors: predecessors in crop rotation, seed reproduction, and consumption of macro-elements from the soil. The multi-agent DTP model has been modified to account for the morphological and physiological characteristics of crop varieties, as well as parameters for each phenological phase of the plant. A software prototype of the DTP is presented, implementing the developed methods for simulating the production process of crop plants. Experimental cultivation of crops using the DTP was conducted in the 2022/2023 season. The obtained datasets during the experiments will be used to calibrate the model and improve the accuracy of predicting plant parameters at each phenological phase.
Central banks’ Integration of Climate Change Issues into an Increased Taylor Rule in the Mediterranean Region: An Analysis based on the System The Generalized Method of Moments (GMM)
Authors: Mohamed Benjilali , Mourad Azhari , El Mokhtar Chikhi , Abdallah Abarda
Published: November 2024

Climate change could have significant consequences such as rising sea levels, intensified storms, floods, droughts and forest fires. These effects could lead to forced migration, ecosystem degradation and extinction of many species. In addition, they could also affect the ability of central banks to maintain price stability. This research proposes an innovative method to integrate CO2 emissions into a Taylor rule, considering a risk premium related to climate change. This risk premium is determined by the CO2 emission gap. The model is evaluated over a period from 2002 to 2022 for 14 countries in the Mediterranean region, using the two step system Generalized Method of Moments (GMM). The results show that the coefficient associated with the CO2 emission gap is both positive and statistically significant at a level of 5%. This means that a 1% increase in this gap leads the Central Bank to increase its policy rate by 2.64%.
Optimal Scheduling Works for Two Employees with Ordered Criteria
Authors: Matsveichuk Natalja M. , Sotskov Yuri N. , Sun Liangliang
Published: November 2024

The number of users of time management in the world is increasing due to the need for remote work (at home), study, teaching, and service. This requires the improvement of time-management models, methods, and the development of new optimization algorithms and software tools that will take into account the characteristics and needs of new time-management users. This article presents the necessary and sufficient conditions for schedule optimality, algorithms, and results of computational experiments conducted on the optimal selection and planning of interrelated jobs for two performers (a supervisor and a subordinate). Such an optimization problem arises in time management for scheduling the performance of the selected jobs in conditions of the uncertainty of the selected jobs to be scheduled and then executed. We develop a scheduling algorithm and present computational results for selecting and scheduling interrelated jobs for two employees for minimizing the schedule length as the main criterion and minimizing the sum of the weighted completion times of the jobs as the second criterion.
La renovación del concierto económico y la modernización de las haciendas vascas durante la dictadura de Primo de Rivera
Authors:   Universidad del País Vasco, Alonso-Olea Eduardo , Erkoreka Mikel
Published: November 2024

ntroducción
Negociaciones y consecuencias de la renovación del concierto económico de 1925 y del reglamento de 1926
Evolución y modernización de las haciendas de Álava, Bizkaia y Gipuzkoa durante la transición al nuevo cupo
La reforma de los sistemas tributarios frente al incremento del cupo
El resultado de las reformas: evolución de la capacidad de gasto y endeudamiento
Bibliografía
Entre el gernikako arbola y el movimiento nacional español: La dictadura de primo de rivera en el País Vasco (1923-1930)
Authors: Belaustegi Unai
Published: November 2024

El inicio de la dictadura en las provincias vascas
La centralización: del descontento a la aceptación de la nueva realidad
El fracaso del proyecto autonomista
La movilización ciudadana: la unión popular y el somatén
La «normalidad» política: el «parlamento» de la dictadura
Epílogo: el fin de la dictadura
Bibliografía
La sociedad urbana vasca durante la década de 1920
Authors:   Universidad del País Vasco, Beascoechea-Gangoiti José María
Published: November 2024

Introducción
La población urbana
Paisajes urbanos
Nuevas actitudes sociales
Bibliografía
El debate territorial y la «región vascongada» durante la dictadura de Primo de Rivera: Consensos y divergencias en torno a la autonomía en el sistema de partidos vasco
Authors:   Universidad del País Vasco, Garro Jon
Published: November 2024

Introducción
Antecedentes: modernización y consolidación del discurso foral en el siglo XIX
El cambio de estrategia: de la reintegración foral al estatuto de autonomía
La política territorial de la dictadura de Primo de Rivera y su giro programático
La memoria de estatuto de autonomía de la Diputación de Gipuzkoa de 1923
La posición de los partidos políticos vascos ante la cuestión autonómica al final de la dictadura de Primo de Rivera (1930)
Epílogo: consensos y divergencias en el sistema de partidos vasco frente a la autonomía
Bibliografía
Güncel Endodonti Çalışmaları VI
Authors: Akduman Gamze , Büyüközer Özkan Hatice , Keleş Tuğba , Kurnaz Safa , Eraslan Akyüz İpek , Düzgün Salih , Karaosmanoğlu Akın Deniz , Kültür Büşra , Eskibağlar Mehmet , Tuzcu Ecenur , Sevtekin Selman , Özlek Esin , Zırhlı Sevil , Çelik Uzun Nihan , Çakar Melis , Kaşıkçı Sena
Published: November 2024

Umutsuz Dişlere Kasıtlı Replantasyon, Transplantasyon ve Cerrahi Ekstrüzyon ile Tedavi Yaklaşımları
Gamze AKDUMAN
Hatice Büyüközer ÖZKAN
İrreversible Pulpitis Tanılı Dişlerde Vital Pulpa Tedavi Yaklaşımları
Tuğba KELEŞ
Safa KURNAZ
Endodonti ve Sistemik Hastalıklarla İlişkisi
İpek ERASLAN AKYÜZ
Salih DÜZGÜN
Endodontide Yapay Zekânın Yeri
Deniz KARAOSMANOĞLU AKIN
Endodontide Eksternal Servikal Rezorpsiyon
Büşra KÜLTÜR
Mehmet ESKİBAĞLAR
Endodontik Tedavide Rubber Dam Kullanımı
Ecenur TUZCU
Safa KURNAZ
Tekrarlayan Endodontik Tedavilerde Solventlerin Kullanımı ve Etkileri
Selman SEVTEKİN
Esin ÖZLEK
Biyoseramik Esaslı Kanal Patlarının Kök Kanallarından Uzaklaştırılmasına Dair Bir Güncelleme
Sevil ZIRHLI
Nihan ÇELİK UZUN
Eğe Kırılmasına Neden Olan Etkenler
Melis ÇAKAR
Endodontide Perforasyonlar ve Tedavi Yöntemleri
Sena KAŞIKÇI
Performance optimization of microwave-coupled plasma-based ultra-low energy ECR ion source for silicon nano-structuring and application
Authors: Mukherjee Joy , Mullick Safiul Alam , Basu Tanmoy , Som Tapobrata
Published: November 2024

This literature presents a comprehensive optimization of key parameters crucial for generating ion beams in a microwave-coupled plasma-based ultra-low energy Electron Cyclotron Resonance (ECR) ion source, generally used for nano-structuring on solid surfaces. The investigation focuses on developing, accelerating, and extracting Ar+ ions from a magnetron (microwave) coupled plasma cup utilizing three-grid ion extraction composed of molybdenum. The study systematically examines the dependence of ion beam current on critical parameters, such as gas pressure, magnetron power, extraction voltage, and ion energies. Additionally, the influence of extraction voltage on beam current is investigated for different ion energies. The variation of beam current as a function of ion energy is explored under constant magnetron current and extraction voltage at various conditions. The Gaussian nature of the beam profile is scrutinized and elucidated within the context of grid extraction-based ion sources. Plasma physics principles are employed to interpret the observed variations in ion current density (beam current) with various parameters. The corresponding ion-induced nanopatterning on silicon, using the optimized beam current, is explored in detail. Furthermore, the research delves into the temporal evolution of the surface topography of silicon followed by off-normal incidences (60º and 72.5º) is Ar-ion extracted at 450 eV Ar-ions. The changes in the optical property, resulting from nano-patterned surfaces, investigated using UV-VIS spectroscopy, is correlated the with dimension of nano patterning. This manuscript highlights the potential applications arising from these findings, emphasizing the transformative impact of low energy inert ion induced nano-patterning technologies.
Generative AI-based Writing Feedback Model Development
Authors:   Korean Association for Literacy, Choi Jin-Young
Published: November 2024

This study aimed to develop a systematic writing feedback model that reduces the burden on teachers in the writing process while allowing students to receive individualized feedback using generative AI. Thirteen experts were recruited and a Delphi survey was conducted.
The results were as follows. First, we identified a writing process for utilizing generative AI and a feedback structure for that process. Second, we finalized the argumentative writing test and its evaluation factors and detailed scoring criteria to be applied to this model. Third, we added examples of generative AI question types and prompts to provide concrete examples of the model.
The implications are as follows. First, generative AI has the potential to drive self-reflective feedback from students during the writing process. Second, generative AI can reduce teacher fatigue and provide more personalized feedback. Finally, we propose a concrete feedback model for generative AI in education.
However, this study had a limitation in that it did not confirm the effect through the application of a practical model. Therefore, we will continue to conduct follow-up research.
Exploration of Research Trends in Digital Literacy for the Elderly using Topic Modeling
Authors:   Korean Association for Literacy, Kim Kyoung-hwa , Seok Hye-eun , Han Eunyoung
Published: November 2024

This study aims to investigate trends in research pertaining to digital literacy among the elderly using topic modeling, thereby providing foundational data for discussions on digital literacy research and policy. A total of 927 academic papers and theses related to digital topics for the elderly were collected, resulting in a corpus of 7,595 words. The research materials were categorized into four distinct periods based on the trends in publication frequency concerning elderly digital topics. To gain deeper insights into the research trends during periods of significant increases in studies on elderly digital literacy and the emergence of research explicitly addressing digital literacy, two additional topic modeling analyses were conducted. The findings of these analyses revealed specific themes and critical directions in the discourse surrounding elderly digital literacy research. As interest in enhancing digital literacy among older adults continues to grow, this study may inform policy proposals aimed at increasing technology acceptance and improving information accessibility for this demographic. The results will serve as foundational material for discussions on supporting digital literacy among the elderly and bridging the digital divide.
Designing and performing presentations as a process of rewriting － Student activities in liberal arts writing classes at universities
Authors:   Korean Association for Literacy, Kim Nammee
Published: November 2024

The purpose of this article is to examine the principles and direction that university presentation courses should adopt, based on a case study. This study reinforces the necessity of expanding beyond mere “oral presentation competence” to a “comprehensive presentation process” for students to perform high-quality presentations. Key elements such as “topic” and “structure,” which hold the highest hierarchical importance in a presentation, are not fully realized during the presentation itself. Instead, these elements must be continually reviewed and expanded throughout the pre-presentation, execution, and post-presentation phases. University level presentation courses should be designed to help learners internalize the essence of communication through active engagement in the processes of “rewriting and rereading,” enabling them to form a foundational framework for this comprehensive presentation process.
To achieve this, students must be provided with extended opportunities to experience constructing and revising higher-order macrostructures such as “topic and structure” within writing. This process should incorporate opportunities for students to identify and generate latent core information that may share the same or a higher hierarchical level as the visible results of their thinking, allowing them to recognize and internalize such information. The experience of expanding one’s cognitive processes and undergoing qualitative improvement within the comprehensive presentation process is essential for developing the cognitive and behavioral competencies required for an effective presentations.
A Theoretical Review of the Concept and Resolution of Conflicting Information in Multiple Text Foundations
Authors:   Korean Association for Literacy, Mun jieyon
Published: November 2024

In this study, I aim to define the concept of conflicting information in multiple text systems and examine the theories related to its resolution, highlighting key areas for discussion. I begin by elaborating on the concept of conflicting information, drawing from its dictionary definition and relevant academic theories, and distinguish it from related terms such as inconsistent information and misinformation. Although conflicting information has been widely discussed in the context of individual documents, I explore the differences between conflicting information in single texts and across multiple texts to clarify its unique characteristics in a multiple text setting.
One key reason for establishing a distinct concept of conflicting information is that existing multiple text studies tend to focus too heavily on restoring coherence lost due to conflicting information, without fully addressing the deeper complexities of the conflicts themselves. To address this, I propose a content-source integration (CSI) model, which emphasizes resolving conflicting information not only through integration but also through evaluation for decision-making. I also present a revised version of this model for comparative analysis and further discussion.
Relationship between Teachers’ Perception of Difficulties in Expository Reading Classes and Instructional Practice － Based on teacher variables
Authors:   Korean Association for Literacy, Heo Moah , Pyun Jiyun
Published: November 2024

This study aims to investigate the relationship between difficulties perceived by teachers and instructional practice, focusing on expository reading classes in high school, and to identify differences in instructional practice and perceptions regarding class difficulties according to teacher background variables. Data on teaching efficacy, teaching career, educational background, perception regarding class difficulties, and instructional practice execution patterns were collected from 48 high school reading teachers. Correlation analysis and independent sample t-tests were used.
The results showed that the instructional practice in expository reading classes and class difficulties as perceived by teachers were correlated in various ways. In particular, giving out background knowledge or assistant material was found to have a considerable correlation with student, teacher, and social environmental factors. Conversely, the study revealed differences in teachers’ perception and instructional practice according to background variables such as teaching efficacy, teaching career, and educational background.
DESAFIOS DO ENSINO SUPERIOR PARA DISCENTES DO CURSO DE ADMINISTRAÇÃO: UM ESTUDO NA UFRA/CAMPUS CAPANEMA, NORDESTE PARAENSE
Authors: Pontes Sângela Coelho , Silva Valéria do Socorro Rodrigues da , Silva Carla Santos da , Silva Wagner Jhonatan de Azevedo , Nogueira Ana Karlla Magalhães
Published: November 2024

Objetivo: O objetivo deste trabalho foi realizar uma análise dos desafios socioeconômicos enfrentados pelos discentes do curso de administração da UFRA Campus/Capanema, Nordeste Paraense. Métodos: A presente pesquisa é de natureza qualitativa e quantitativa. E para a obtenção dos dados foi realizada a aplicação de questionário semiestruturado junto aos discentes, devidamente matriculados no curso de Administração. A aplicação do questionário ocorreu de 19 de setembro a 15 de outubro de 2023 junto a quarenta e quatro discentes do curso de administração. Resultados: Identificou-se desafios importantes enfrentados pelos discentes, como a necessidade de conciliar trabalho e estudo, a falta de suporte dos docentes no atendimento extraclasse, a carga horária excessiva de disciplinas e as dificuldades de acesso à biblioteca. Destaca-se a importância de ampliar as políticas de assistência estudantil e programas de tutoria para auxiliar os discentes a superar tais obstáculos e promover um ambiente acadêmico mais inclusivo e equitativo. Considerações finais: Diante dos desafios identificados, é essencial adotar medidas concretas para apoiar os discentes na superação dos obstáculos socioeconômicos, visando aprimorar sua experiência de aprendizado, reduzir as taxas de reprovação e promover a igualdade no ensino superior.
Hubungan Asupan Energi dan Asupan Protein dengan Kebugaran Jasmani pada Mahasiswa Pendidikan Jasmani Universitas Muhammadiyah Surakarta
Authors: Safitri Imtinan Mauriko , Rakhma Luluk Ria , Mardiyati Nur Lathifah
Published: November 2024

Mahasiswa pada usia dewasa muda (18-26 tahun) berada dalam fase kritis perkembangan, di mana kebutuhan energi dan protein menjadi sangat penting untuk mendukung aktivitas sehari-hari dan kebugaran jasmani. Namun, banyak mahasiswa yang kurang memperhatikan asupan nutrisi dan aktivitas fisik yang dapat mempengaruhi kebugaran jasmani mereka. Penelitian ini bertujuan untuk menganalisis hubungan antara asupan energi dan asupan protein dengan kebugaran jasmani pada mahasiswa Pendidikan Jasmani Universitas Muhammadiyah Surakarta. Penelitian dilakukan dengan pendekatan kuantitatif menggunakan desain cross-sectional. Sampel penelitian sebanyak 64 mahasiswa yang dipilih secara acak menggunakan simple random sampling. Data asupan energi dan protein diperoleh melalui wawancara menggunakan food recall 24 jam selama 3 hari tidak berturut-turut, kemudian dianalisis menggunakan uji Rank Spearman untuk menentukan hubungan dengan kebugaran jasmani. Analisis univariat dilakukan untuk mendeskripsikan variabel. Hasil analisis menunjukkan bahwa mayoritas mahasiswa Pendidikan Jasmani Universitas Muhammadiyah Surakarta memiliki asupan energi baik (78,1%) dan protein (48,4%) yang kurang, meskipun 92,2% dari mereka memiliki tingkat kebugaran jasmani yang baik. Uji statistik menunjukkan adanya hubungan signifikan antara asupan energi (p=0,005) dan asupan protein (p=0,007) dengan kebugaran jasmani mahasiswa. Kesimpulannya, asupan energi dan protein yang baik berperan penting dalam mendukung kebugaran jasmani mahasiswa.
Hubungan Asupan Karbohidrat dan Status Gizi dengan Kebugaran Jasmani pada Mahasiswa Pendidikan Jasmani Universitas Muhammadiyah Surakarta
Authors: Wahyuningtyas Pradita , Rakhma Luluk Ria , Mardiyati Nur Lathifah
Published: November 2024

Mahasiswa merupakan individu yang berada dalam tahap transisi menuju dewasa, umumnya berusia antara 18 hingga 25 tahun. Masa ini adalah fase kehidupan yang penuh aktivitas, sehingga membutuhkan keseimbangan antara aktivitas fisik dan pola makan yang tepat untuk mencapai pertumbuhan yang optimal serta menjaga kesehatan dan kebugaran tubuh. Data dari Riskesdas 2018 menunjukkan bahwa sekitar sekitar 66,5% dari 818.507 penduduk Indonesia tercatat memiliki tingkat kebugaran yang rendah. Penelitian ini bertujuan untuk menganalisis hubungan antara asupan karbohidrat dan status gizi dengan kebugaran jasmani mahasiswa Pendidikan Jasmani Universitas Muhammadiyah Surakarta. Metode penelitian yang digunakan adalah kuantitatif dengan desain cross-sectional. Sampel penelitian terdiri dari 64 mahasiswa yang diambil secara acak, dengan pengukuran asupan karbohidrat menggunakan metode food recall 3x24 jam dan penentuan status gizi menggunakan Indeks Massa Tubuh (IMT). Kebugaran jasmani diukur melalui tes kebugaran standar. Hasil penelitian menunjukkan bahwa 78,1% mahasiswa memiliki asupan karbohidrat yang kurang, sedangkan 76,6% mahasiswa memiliki status gizi normal. Analisis statistik menggunakan uji Rank Spearman menunjukkan adanya hubungan signifikan antara asupan karbohidrat dan status gizi dengan kebugaran jasmani, dengan nilai p=0,005 untuk asupan karbohidrat dan p=0,022 untuk status gizi. Temuan ini mengindikasikan bahwa peningkatan asupan karbohidrat yang memadai dan status gizi yang baik berkontribusi terhadap peningkatan kebugaran jasmani mahasiswa. Rekomendasi untuk meningkatkan kesadaran gizi dan pola makan yang seimbang di kalangan mahasiswa juga dibahas dalam penelitian ini.