bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of clamping position on the residual stress in wire arc additive manufacturing
Authors: Ujjwal Kumar , Anand Mukul , Bishwakarma Harish , Das Alok Kumar 
Published: August 2023

Abstract
The distortion of components printed by wire arc additive manufacturing (WAAM) due to repeated thermal cycles affects the build quality. The residual stress generated due to these thermal cycles can be predicted with the help of the finite element method. The temperature distribution and residual stresses in the WAAM component are predicted using a numerical model presented in this paper. Also, the effect of clamping position on the substrate is investigated. For this, two different clamping positions are compared with the unclamped state. The residual stress is minimum for the unclamped case and has maximum strain. The case where the substrate is clamped at the centre generates 77 % more tensile stress when compared with the corner clamped case.
Ideologies and attitudes of Spanish pre-service teachers on ELF
Authors: Calvet-Terré Júlia , Llurda Enric 
Published: August 2023

AbstractThe emergence of English as a tool for global communication among multilingual speakers poses relevant challenges to traditional ways of learning and teaching the language. To this end, teacher education becomes of crucial importance not only to raise students’ awareness of the global status of the language, but also to align their practices in a way that respond to the changes brought about by English as a Lingua Franca (ELF) research, from an Anglocentric and monolingual-based perspective to a pluricentric representation of English in multilingual environments. In this paper, we intend to unearth the ideology and attitudes towards English as a global lingua franca held by 569 pre-service teachers through a survey addressed to students in English-related university BA and MA degrees across Spain. The survey seeks to explore the impact on pre-service teachers’ views and attitudes towards the language of the following factors: (i) study-abroad experience; (ii) attendance to courses promoting ELF-awareness; (iii) current year of study. The findings suggest that a positive effect is found at the level of ideology; however, participants are less prone to adhere to principles of ELF-aware teaching when practically evaluating non-standard forms.
Low-velocity impact behaviours of sandwiches manufactured from fully carbon fiber composite for different cell types and compression behaviours for different core types
Authors: Bozkurt Ilyas , Kaman Mete Onur , Albayrak Mustafa 
Published: August 2023

Abstract
This study aims to manufacture sandwich composite structures consisting of fully fiber-reinforced composites and then to investigate experimentally and numerically the impact and compressive strength and damage mechanisms of these structures for different cell and core types. To achieve this, firstly, composite sandwich plates with triangular, square and rectangular cell structures were manufactured. Low-velocity impact tests were run on sandwich structures with these three different cell geometries and the effect of cell shape on impact strength was determined. Although the maximum contact force of the square structure under impact load was smaller than the maximum contact force of the triangular and rectangular specimens, the specific contact force was 15.52 % greater than the triangular specimen and 16.29 % greater than the rectangular specimen. Then, the specimens with square, egg box and lattice core types were manufactured and compression tests were performed. The specific peak load value for square specimens was 33.2 % greater than that of egg box specimens and 78.1 % greater than that of lattice specimens. In the numerical study, the experimental results were confirmed by applying the progressive failure analysis with the LS-DYNA finite element program.
Students’ Perspectives on the Application of Internet of Things for Redesigning Library Services at Kurukshetra University
Authors: Kumar Rajender 
Published: August 2023

Abstract
The purpose of this study was to investigate students’ perceptions regarding the implementation of the Internet of Things (IoT) at Kurukshetra University Library. A descriptive survey method was employed, utilizing a random sampling technique to survey 250 students from five different faculties: Arts & Linguistics, Social Science, Science, Engineering & Technology, and Law. A total of 237 completed questionnaires were received that were correctly filled out, resulting in a response rate of 94.8%. The analysis of data was done through the utilization of statistical software such as Statistical Package for the Social Sciences and Microsoft Excel. Statistical analysis was performed using percentages and analysis of variance to evaluate the significance of the findings at a 0.05% level. The findings indicate that a majority of students strongly support the use of IoT to replace outdated library processes and services. Furthermore, a significant difference was observed in the mean values of students’ perceptions and the usefulness of employing IoT in the library across the five faculties. These results are presented in tabular format, accompanied by an appropriate explanation. The study offers insights into the potential benefits associated with implementing IoT in university libraries and underscores the importance of staying abreast of modern technological advancements in the field of libraries.
Activity in Barrel Cortex Related to Trace Eyeblink Conditioning
Authors: Silva-Prieto May-Li , Hofmann Julian I. , Schwarz Cornelius 
Published: August 2023

AbstractIn mammals several memory systems are responsible for learning and storage of associative memory. Even apparently simple behavioral tasks, like pavlovian conditioning, have been suggested to engage, for instance, implicit and explicit memory processes. Here, we used single-whisker tactile trace eyeblink conditioning (TTEBC) to investigate learning and its neuronal bases in the mouse barrel column, the primary neocortical tactile representation of one whisker. Behavioral analysis showed that conditioned responses (CRs) are spatially highly restricted; they generalize from the principal whisker only to its direct neighbors. Within the respective neural representation, the principal column and its direct neighbors, spike activity showed a learning-related spike rate suppression starting during the late phase of conditioning stimulus (CS) presentation that was sustained throughout the stimulus-free trace period (Trace). Trial-by-trial analysis showed that learning-related activity was independent from the generation of eyelid movements within a trial, and set in around the steepest part of the learning curve. Optogenetic silencing of responses and their learning-related changes during CS and Trace epochs blocked CR acquisition but not its recall after learning. Silencing during the Trace alone, which carried major parts of the learning-related changes, had no effect. In summary, we demonstrate specific barrel column spike rate plasticity during TTEBC that can be partially decoupled from the CR, the learned eye closure, a hallmark of implicit learning. Our results, thus, point to a possible role of the barrel column in contributing to other kinds of memory as well.
Why Do Science Lecturers Distinguish the Use of Mobile Technologies for Instruction?
Authors: Onojah Amos Ochayi , Obielodan Omotayo Olabo , Onojah Adenike Aderogba , Alani Taye Rasheed 
Published: August 2023

Lecturers are not engaging in the frequent use of mobile technologies to support and supplement instructions and their learning experiences, as these technologies assist in simplifying concepts and could lead to improved academic performance. The objectives were to investigate science lecturers' perceived use of mobile technologies for instruction. The study was a descriptive research of survey type and a random sampling technique was adopted to select 172 respondents. Data were analyzed using frequency count, percentage and t-test. The findings established that science lecturers have a bright perception of the use of mobile technologies for instruction. The study concluded that science lecturers’ perception of the use of mobile technology boosts their students’ learning. It was thus recommended that government should provide an affordable platform for lecturers and students to have their personal technological devices (computer set) which they can use independently and for group learning.
Abstrak
Dosen tidak sering menggunakan teknologi seluler untuk mendukung dan melengkapi instruksi dan pengalaman belajar mereka, karena teknologi ini membantu menyederhanakan konsep dan dapat meningkatkan kinerja akademik. Tujuannya adalah untuk menyelidiki dosen sains yang menggunakan teknologi seluler untuk pengajaran. Penelitian ini merupakan penelitian deskriptif dengan tipe survey dan teknik random sampling digunakan untuk memilih 172 responden. Analisis data menggunakan frekuensi hitung, persentase dan uji-t. Temuan menetapkan bahwa dosen sains memiliki persepsi yang cerah dalam penggunaan teknologi seluler untuk pengajaran. Studi ini menyimpulkan bahwa persepsi dosen IPA tentang penggunaan teknologi seluler meningkatkan pembelajaran siswa mereka. Oleh karena itu, direkomendasikan agar pemerintah menyediakan platform yang terjangkau bagi dosen dan mahasiswa untuk memiliki perangkat teknologi pribadi (perangkat komputer) yang dapat mereka gunakan secara mandiri dan untuk pembelajaran kelompok.
Developing 3D Automated Human Heart Model to Teach Abstract Concept of Biology
Authors: Bababola Ebenezer Omolafe , Olumorin Charles Olabode , Ayodeji Aladesusi Gboyega , Omolafe Eyiyemi Veronica 
Published: August 2023

Models are direct replicas, images, or copies of real objects or figures. They are made in place of the original object and therefore used as such in place of the original. Inability to have access to mammalian internal organs is one of the challenges in teaching some concepts in Biology. Hence, the need to develop a 3-dimensional automated model of the human heart (3-DAMHH) to teach Biology concepts in Ilorin, Nigeria. The study was a developmental research design model. ADDIE model was adopted. The findings of this study revealed that a 3-dimensional (3D) automated model of the human heart was successfully developed with silicon gum, pop, oil paint, hosepipe, pumping devices, transformer, and diode. Findings also revealed that a 3-dimensional automated model of the human heart was cost-effective. This study recommends biology teachers use 3-DAMHH for teaching abstract concepts in biology.
Abstrak
Model adalah replika langsung, gambar atau salinan dari benda atau angka nyata yang dibuat sesuai dengan objek aslinya dan karenanya digunakan seperti objek aslinya. Ketidakmampuan untuk mengakses organ dalam mamalia merupakan salah satu tantangan dalam mengajarkan beberapa konsep dalam mata pelajaran Biologi. Oleh karena itu, perlu dikembangkan model jantung manusia otomatis 3 dimensi (3-DAMHH) untuk mengajarkan konsep Biologi. Dalam hal ini ini peneliti mengambil konteks di Ilorin, Nigeria. Penelitian ini merupakan penelitian pengembangan menggunakan model ADDIE. Temuan penelitian ini mengungkapkan bahwa: model jantung manusia otomasi 3 dimensi berhasil dikembangkan dengan permen karet silikon, pop, cat minyak, selang, perangkat pompa, transformator, dan dioda. Temuan lain juga mengungkapkan bahwa model otomatis 3 dimensi jantung manusia hemat biaya. Studi ini merekomendasikan agar para guru Biologi menggunakan 3-DAMHH untuk mengajar konsep abstrak dalam biologi dalam pembelajaran mereka.
Early metakaolin reactions in pozzolanic R3-test: calorimetry baseline correction of initial temperature jump due to ex-situ mixing
Authors: Weise Kira , Ukrainczyk Neven , Koenders Eduardus 
Published: August 2023

AbstractThe increasing concerns regarding global warming and the scarcity of raw materials in the construction industry have led to a growing need for alternative low-carbon binders to partially replace ordinary Portland cement. To assess the suitability of pozzolans as supplementary cementitious materials (SCMs), the R3-test has been introduced and successfully validated for a wide range of materials. This test provides an opportunity to analyze the reactivity classification and study the reaction mechanisms and kinetics of novel SCMs in a well-controlled environment. In this study, the focus lies on evaluating the early reactions of lime paste samples through isothermal calorimetry tests conducted at 40 °C. However, conventional mixing methods present experimental challenges. In-situ mixing fails to achieve proper paste homogenization, while ex-situ mixing results in a temperature difference at the start of testing due to the elevated testing condition of 40 °C. To address these concerns, a novel calorimetric methodology is proposed for early detection of reactivity responses. The main concept involves establishing a baseline correction for the temperature difference caused by ex-situ mixing, which is calibrated using an inert sample. This correction allows for the extraction of the heat generated by the early reactions. Combined with the Tian time correction, this methodology enables the evaluation of early reactions in lime paste samples measured with isothermal calorimetry at 40 °C within the first 100 min after mixing. The effectiveness of this methodology was demonstrated by evaluating the early reactions and the impact of potassium sulfate on three different types of metakaolin.
COVID-19 Reflections of Hyperlocal, Placed-Based Engagement
Authors: Ellerbee Daren , Kirby John , Kuttner Paul , Schwartzentruber Lorna , Valis Ashley , Dostilio Lina 
Published: August 2023

The degree to which Universities could nimbly and effectively respond to the impacts of the COVID-19 crisis on their local communities depended upon the structure and orientation of their community engagement infrastructure. Institutions that support a hyperlocal form of place-based engagement were uniquely positioned to harness their extensive place-based organizational networks, intimate knowledge of community assets, and existing paths to leverage institutional resources to work alongside neighbors, residents, organizational leaders, elected officials, elders, youth and families committed to everyone’s thriving through the COVID-19 crises.
Hyperlocal, place-based engagement describes an engagement approach within higher education in which a university’s community engagement efforts are focused on a bounded area, such as a neighborhood, within a larger city or metropolitan region, and are aligned with that community’s development goals (Dostilio, Ohmer, McFadden, Mathew, & Finkelstein, 2019). These efforts typically advance two goals: to a) position the institution to partner with, and add value to, community building efforts undertaken by the neighborhood being engaged and b) to enhance and accelerate the institution’s ability to forge mutually-beneficial alliances and mobilize knowledge production. Because these efforts are long-term, they create unique conditions for engagement that proved to accelerate community-campus engagements to address COVID-19 impacts.
The Community Engagement Professionals (Dostilio, 2017) who lead hyperlocal engagement activities were particularly crucial to their institution’s COVID-19 community responses. At the time of the pandemic, a group of such professionals had been meeting as a learning community to exchange promising practices of hyperlocal engagement. This article is written from the perspective of these professionals, endeavoring to reflect on how their work to steward hyperlocal approaches was challenged and affirmed through the COVID-19 pandemic.
Atividades funcionais prioritárias para a reabilitação identificadas por mães de crianças com paralisia cerebral, terapeutas ocupacionais e fisioterapeutas
Authors: Ribeiro Isabela Reis , Stroppa-Marques Ana Elisa Zuliani , Baleotti Luciana Ramos 
Published: August 2023

Objetivos: Identificar e comparar atividades prioritárias para intervenção, desempenho e satisfação em relação à essas atividades na percepção de mães de crianças com paralisia cerebral (PC), terapeutas ocupacionais (TOs) e fisioterapeutas (FIs). Método: Estudo descritivo, transversal realizado em um Centro Especializado de Reabilitação. Utilizou-se a Medida Canadense de Desempenho Ocupacional, análise descritiva simples para comparar as prioridades de intervenção, Análise de Variância Mista com medidas repetidas para análise das variáveis desempenho e satisfação. Resultados: Partiparam 19 mães de crianças com PC com comprometimento neuromotor leve ou grave, cinco TOs e quatro FIs. Observou-se tendência de concordância entre mães e TOs nas prioridades de intervenção para crianças com PC leve e grave, e maior distanciamento entre mães e FIs. Para a variável desempenho não houve diferença significativa entre os avaliadores no grupo de PC grave, no grupo de PC leve não houve diferença entre mães e TOs, mas sim, entre esses e FIs. Na variável satisfação, FIs divergiram de mães e de TOs nos casos graves, nos leves, FIs divergem de mãe, mas não de TOs. Conclusão: Os resultados deste estudo apontam a necessidade de maior articulação entre terapeutas e mães visando estratégias de intervenção apoiadas na prática centrada na família.
A fragmentação do conhecimento e as escolas a partir do século XX
Authors: Silva Thiago , Sá Ivo Ribeiro , Gomes Wagner Cotrim 
Published: August 2023

This study aims to discuss the role of the school in the education process of society from the 20th century and the way in which knowledge is organized and worked in these schools. Therefore, it was guided by the bibliographic technique, from exploratory objectives. The fragmented knowledge and the specialization of the modern sciences have provided, over time, improvements in the quality of life of the populations, but they have also brought some inconveniences, distancing man from reality, producing in them a crumbled conscience, this phenomenon was called by Japiassu (1976) as the “Knowledge Pathology”, something that could be fought by schools, but what we could still observe is the structuring of a fragmented teaching with well-defined and delimited school subjects worked in isolation without articulation between knowledge.
Nfe2l1-mediated proteasome function controls muscle energy metabolism in obesity
Authors: Bartelt Alexander , Lemmer Imke , Willemsen Nienke , Kotschi Stefan , Toksöz Irmak , Gjika Ejona , Khani Sajjad , Haas Daniel , Krahmer Natalie , Rohm Maria , Dyar Kenneth , Herzig Stephan , Diercksen Nick , Nguyen Phong , Menden Michael , Egu Desalegn , Waschke Jens , Larsen Steen , Ma Tao , Gerhart-Hines Zachary 
Published: August 2023

Abstract
Muscle function is an important denominator of energy balance and metabolic health. Adapting the proteome to energetic challenges, in response to diet or fasting, is facilitated by programs of proteostasis, but the adaptive role of the ubiquitin-proteasome system (UPS) in muscle remains unclear. Here, using a multi-omics approach, we uncover that the distinct metabolic condition of obesity is associated with recalibration of the UPS in muscle. Interestingly, obesity is associated with the activation of the transcription factor Nuclear factor, erythroid derived 2,-like 1 (Nfe2l1, also known as Nrf1), and loss of myocyte Nfe2l1 diminishes proteasomal activity and leads to hyperubiquitylation. Mice lacking Nfe2l1 display hormetic energy metabolism and resistance to diet-induced obesity, associated with a lean phenotype and muscle fiber type switching. In conclusion, we define a new adaptive role for UPS in remolding of muscle proteome and function, which is controlled by fine-tuning of proteasome function by Nfe2l1.
Blind Quality Assessment Index of Realistic Nighttime Image via Multi-Scale and Multi-Level Features Aggregation
Authors: Xiao Shuyan , Jiang Ye , Tao Weige , Pan Lingjiao , Wang Yu 
Published: August 2023

Abstract
Realistic nighttime images present a great challenge for accurate quality assessment due to their complex distortion characteristics. To this end, we put forward a novel blind nighttime image quality assessment index that incorporates features at multi-level and multi-scale (BNMM). First, given the distinct scale-dependent perceptual characteristics of the human visual system (HVS), we obtain multiple nighttime images at different scales through down-sampling and then put the sequence of the original image and down-sampling image into a feature extractor. Second, to quantify nighttime image quality, low-level visual features and high-level semantics, are extracted. Texture feature and the contrast feature are used to capture local details in the nighttime images. To explore higher-level semantics, we utilize a deep convolutional neural network (DCNN) to analyze the first-grade features. Subsequently, second-grade features are computed by applying statistical functions (mean and variance) to the first-grade features, proving a comprehensive representation of the image distortion and its effects on high-level semantics. Finally, low-level and second-grade high-level features are then aggregated and used as input to partial least squares regression (PLSR) in perceives the nighttime image quality. According to experiments on databases including NNID and SPAQ subset, the proposed BNMM index achieves a higher prediction accuracy and stronger generalization ability compared to existing models.
Computational Analysis Reveals Sensitivity to Contrast in Simple Cells of Primary Visual Cortex
Authors: Chatterjee Subhrasankar , Chhabra Simranjeet Singh , Samanta Debasis 
Published: August 2023

Abstract
The visual ventral system needs to be better understood despite recent technological advancements. The primary visual cortex processes edge-based information and contrast patterns in the human brain, which are heavily studied. However, the nature of non-linearity involved in contrast processing still needs to be discovered. This study aims to determine the type of cells involved in contrast processing and the nature of non-linearity involved. Initially, the VOneNet computational model of V1, among other models of V1, was selected for its performance and interpretability. The model was used to verify the shift-invariance property of Complex Cells and classify a dataset of images labeled based on contrast using features similar to simple cells of V1. The results suggest simple cells with rectified linear activation are responsible for contrast processing. These findings have important implications for understanding the primate visual system and may inform the development of future models.
Numerical Investigation of Non-Linear Damping in Lateral Liquid Sloshing inside a Cylindrical Tank with a Ring Device
Authors: Cimini Matteo , Rossetti Francesca , Pirillo Lorenzo , Posta Giacomo Della , Stella Fulvio , Bernardini Matteo 
Published: August 2023

Abstract
This study presents a numerical investigation through Computational Fluid Dynamics (CFD) of the behavior of the lateral liquid sloshing inside a cylindrical tank under normal gravity. The analysis considers the presence of a single baffle ring at different filling levels. A validation analysis is conducted on a cylinder with smooth walls to determine the accuracy of the methodology employed and the mesh convergence level. CFD data are then used to estimate the parameters of a pendulum Reduced Order Model (ROM), which is able to provide results in good agreement with the literature. Moreover, the results suggest the need for a modified model including an additional cubic spring parallel to the dashpot, in order to take into account non-linear damping effects generated by the vortex shedding at the tip of the anti-sloshing device.