Science Talks最新文献_第2页

Where students struggle: Using data to uncover bottleneck in chemistry literacy 学生们挣扎的地方：用数据揭示化学素养的瓶颈

Science Talks Pub Date : 2025-12-01 Epub Date: 2025-09-03 DOI: 10.1016/j.sctalk.2025.100484

Maulidia Fara Fiadillah , Woro Sumarni , Sri Susilogati Sumarti , Endah Fitriani Rahayu , Sri Kadarwati , Harjono , Dimas Gilang Ramadhani

{"title":"Where students struggle: Using data to uncover bottleneck in chemistry literacy","authors":"Maulidia Fara Fiadillah , Woro Sumarni , Sri Susilogati Sumarti , Endah Fitriani Rahayu , Sri Kadarwati , Harjono , Dimas Gilang Ramadhani","doi":"10.1016/j.sctalk.2025.100484","DOIUrl":"10.1016/j.sctalk.2025.100484","url":null,"abstract":"<div><div>Understanding students' struggles in learning chemistry requires a multidimensional perspective that considers not only content mastery but also application, reasoning, and affective factors. This study aimed to identify bottlenecks in students' chemical literacy by analyzing performance across four key dimensions: content knowledge, contextual application, higher-order thinking skills (HOTS), and affective aspects (motivation and attitudes). Using a data-driven quantitative approach, assessment scores on electrochemistry topics were examined through advanced educational visualisations. Findings reveal that while students demonstrated strong performance in HOTS and moderate understanding of content, their ability to apply concepts in real-life contexts was limited. The most significant bottleneck emerged in the affective domain, where low scores were consistent and widespread. Correlation analysis further indicated weak relationships between dimensions, particularly the contextual aspect, which appeared conceptually independent. Visual tools such as Sankey diagrams highlighted progressive performance decline from content to affective domains. These results suggest that affective factors play a critical role in learning outcomes and require targeted intervention. The study underscores the importance of integrating data science in educational analysis to capture nuanced learning patterns and guide personalized instructional strategies.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"16 ","pages":"Article 100484"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145061136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of eating environment and protein context in a meal on consumer perceptions, acceptance and expected consumption of alternative proteins: An online study 膳食中的饮食环境和蛋白质背景对消费者对替代蛋白质的感知、接受和预期消费的影响：一项在线研究

Science Talks Pub Date : 2025-12-01 Epub Date: 2025-09-11 DOI: 10.1016/j.sctalk.2025.100488

R. Janani , Jia Wen Xanthe Lin , Ai Ting Goh , Keri McCrickerd , Pey Sze Teo

{"title":"Influence of eating environment and protein context in a meal on consumer perceptions, acceptance and expected consumption of alternative proteins: An online study","authors":"R. Janani , Jia Wen Xanthe Lin , Ai Ting Goh , Keri McCrickerd , Pey Sze Teo","doi":"10.1016/j.sctalk.2025.100488","DOIUrl":"10.1016/j.sctalk.2025.100488","url":null,"abstract":"<div><div>Consumer acceptance of alternative proteins (APs) remains low, requiring efforts to identify ways to encourage shifts in consumer perceptions and behaviors towards APs. We investigated how meal contextual factors such as evoked protein context and eating environment, independently and in combination, influenced consumer perceptions, acceptance and expected consumption of APs in Singapore, and whether associations varied across consumer segments. Participants (<em>N</em> = 822) were pre-grouped into omnivores (<em>n</em> = 381) and flexitarians (<em>n</em> = 441) in an online study. Participants rated the perceived healthiness, naturalness, expected liking and consumption of a ‘chicken-noodles’ dish presented with three protein contexts (animal-based, plant-based, or an animal/plant hybrid) in four eating environments (home, hawker centre, urban restaurant, and nature restaurant). Results showed that independently, protein context influenced expected liking and consumption (both, <em>p</em> < 0.001) whereas environment influenced perceived healthiness and naturalness (both, p < 0.001) in all consumers. Omnivores rated liking and consumption as higher for the hybrid vs. plant-based meal, highlighting the potential of hybrid protein sources to facilitate the transition towards APs. Participants' expected consumption was highest at home (<em>p</em> < 0.001). No combined effect was observed (<em>p</em> > 0.05). Our findings suggest meal context could be modified to shift consumer acceptance and consumption towards APs and aid public health guidance in promoting meat-reduced diets.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"16 ","pages":"Article 100488"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of infill type ratio on strength of PLA and ABS thermoplastics 填充型比对PLA和ABS热塑性塑料强度的影响

Science Talks Pub Date : 2025-12-01 Epub Date: 2025-10-13 DOI: 10.1016/j.sctalk.2025.100496

K.V. Vara Lakshmi, B. Jayanth Venkat Surya, K. Shiva Narasimha

{"title":"The effect of infill type ratio on strength of PLA and ABS thermoplastics","authors":"K.V. Vara Lakshmi, B. Jayanth Venkat Surya, K. Shiva Narasimha","doi":"10.1016/j.sctalk.2025.100496","DOIUrl":"10.1016/j.sctalk.2025.100496","url":null,"abstract":"<div><div>This study investigates the effect of honeycomb infill density on the tensile strength of 3D-printed specimens fabricated using Fused Deposition Modeling (FDM) technology with PLA (Polylactic Acid) and ABS (Acrylonitrile Butadiene Styrene) thermoplastics. The motivation for this work stems from the increasing demand for lightweight polymer components in engineering applications, where reliable tensile performance is critical for structural safety. Although honeycomb structures are traditionally preferred for compression-dominated applications such as heels, heat exchangers, and lightweight cores, they are also increasingly employed in tensile load-bearing components such as lightweight brackets, connecting links, prosthetic parts, and aerospace/automotive fixtures. Understanding their tensile properties is therefore essential for effective design. Specimens with infill densities ranging from 15 % to 100 % were modeled in CATIA V5 and analyzed in ANSYS R21 using a honeycomb (hexagonal) pattern. Tensile strength was evaluated for each density and compared against ASTM E8 tensile properties of plastics. Results show that PLA specimens achieved a maximum tensile strength of 60.02 MPa at 100 % infill, while ABS specimens reached 52.54 MPa. Strength improvement from 15 % to 100 % infill was approximately 60–70 %. PLA exhibited superior stiffness and strength, making it suitable for tensile applications, whereas ABS showed higher strain and deformability. The findings confirm that infill density is a key parameter influencing the tensile performance of thermoplastic parts produced by FDM.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"16 ","pages":"Article 100496"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145362142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AI role-play as a research methodology: Systematic simulation for educational research 人工智能角色扮演作为一种研究方法：教育研究的系统模拟

Science Talks Pub Date : 2025-12-01 Epub Date: 2025-09-10 DOI: 10.1016/j.sctalk.2025.100487

Jessie Ming Sin Wong

{"title":"AI role-play as a research methodology: Systematic simulation for educational research","authors":"Jessie Ming Sin Wong","doi":"10.1016/j.sctalk.2025.100487","DOIUrl":"10.1016/j.sctalk.2025.100487","url":null,"abstract":"<div><div>This tutorial introduces AI role-play as an innovative research methodology for exploring complex, multi-stakeholder scenarios in educational contexts. The methodology addresses limitations of traditional qualitative methods when investigating emerging phenomena where stakeholders cannot articulate challenges they have not experienced. Through systematic prompt design, multi-perspective simulation, and critical validation protocols, AI role-play enables researchers to generate diverse stakeholder viewpoints rapidly and systematically. The tutorial explains the theoretical framework and provides practical guidance for implementation using multiple AI systems, followed by rigorous thematic analysis and cross-system validation to distinguish genuine insights from potential biases. Case studies illustrate the methodology's application in analyzing educational futures and Agile-blended learning implementation challenges, revealing stakeholder dynamics that might not emerge through traditional interviews. The tutorial presents findings from research using AI chatbots, showing how systems can simulate authentic stakeholder reasoning patterns while maintaining distinct perspectives based on their training paradigms. However, critical limitations include potential cultural misrepresentation, oversimplified social dynamics, and embedded training biases requiring careful methodological consideration. The tutorial establishes protocols for ethical implementation, emphasizing transparency in AI use, human guidance in interpretation and acknowledgment of limitations. The methodology serves as a valuable complement to traditional qualitative methods, particularly for hypothesis generation and exploratory research.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"16 ","pages":"Article 100487"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CO2 capture and electro-reduction with the aid of ionic liquids and deep eutectic solvents 离子液体和深共晶溶剂辅助CO2捕获和电还原

Science Talks Pub Date : 2025-12-01 Epub Date: 2025-10-08 DOI: 10.1016/j.sctalk.2025.100495

Fangfang Li , Xiaoyan Ji

{"title":"CO2 capture and electro-reduction with the aid of ionic liquids and deep eutectic solvents","authors":"Fangfang Li , Xiaoyan Ji","doi":"10.1016/j.sctalk.2025.100495","DOIUrl":"10.1016/j.sctalk.2025.100495","url":null,"abstract":"<div><div>The development of CO<sub>2</sub> capture and electro-reduction technologies offers a promising way to mitigate CO<sub>2</sub> emissions and enable CO<sub>2</sub> utilization under mild and sustainable conditions. However, current technologies still face challenges, including the high energy usage associated with CO<sub>2</sub> capture, and the low selectivity and limited reaction rates in CO<sub>2</sub> electro-reduction. Ionic liquids (ILs) and deep eutectic solvents (DESs), owing to their tunable nature, high thermal stability and CO<sub>2</sub> solubility, have emerged as versatile materials for addressing these bottlenecks. In our work, a series of ILs and DESs were systematically designed and modified with co-solvents or porous materials to enhance CO<sub>2</sub> capture performance. Comparative studies with conventional sorbents demonstrated the superior CO<sub>2</sub> capture performance of IL/DESs-based systems, highlighting their potential for industrial application. In addition, ILs/DESs were also employed as electrolytes in CO<sub>2</sub> electro-reduction, facilitating the conversion of CO<sub>2</sub> into value-added products. A techno-economic analysis was conducted for several possible products. Among them, CO was identified as the most economically product. To further enhance the catalytic performance, novel electrocatalysts were developed and evaluated, showing significant improvements. Nevertheless, continued innovation is still required to achieve a technological breakthrough toward scalable and efficient CO<sub>2</sub> capture and electro-reduction technologies.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"16 ","pages":"Article 100495"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145320984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of walking performance in children with developmental delay and typically developing children on a standardised walking obstacle course: Challenges and observations 发育迟缓儿童和正常发育儿童在标准化障碍步道上的行走表现分析：挑战和观察

Science Talks Pub Date : 2025-12-01 Epub Date: 2025-09-01 DOI: 10.1016/j.sctalk.2025.100483

Durga Devi Venkatesh, Arockia Pramila Chinnappan, Sivakumar Ramachandran, Rajeswari Muthusamy

{"title":"Analysis of walking performance in children with developmental delay and typically developing children on a standardised walking obstacle course: Challenges and observations","authors":"Durga Devi Venkatesh, Arockia Pramila Chinnappan, Sivakumar Ramachandran, Rajeswari Muthusamy","doi":"10.1016/j.sctalk.2025.100483","DOIUrl":"10.1016/j.sctalk.2025.100483","url":null,"abstract":"<div><div>This study aims to analyse and compare the challenges faced by children with developmental delay (DD) and typically developing (TD) peers when walking in a standardised walking obstacle course developed to emulate everyday walking challenges, thereby revealing the specific difficulties faced by children with DD in a real-world walking environment. Children with developmental delay remained unchanged or showed very minimal improvement in time and number of steps even after the practice sessions. Despite efforts or practice, they still struggled with balance, stumbled often, and had trouble staying on the path when walking without guidance. Still, results showed that children who are developing typically can complete the obstacle course smoothly. They walk with steady balance, take consistent steps, and don't stumble or step off the path, showing good control and coordination in their movements. The results showed that children with developmental delay had lesser number of stumbles and steps off the path when with guidance, but walking independently through obstacles remains difficult. The Community-Based Standardised walking obstacle course identified these specific walking difficulties. The study highlights the need for early and focused interventions to help children with DD improve their motor skills, gain confidence, and move more safely in everyday situations.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"16 ","pages":"Article 100483"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Binge-watching on porn tube sites: Understanding the role of motivations and individual traits 在色情网站上狂看：理解动机和个人特征的作用

Science Talks Pub Date : 2025-09-01 Epub Date: 2025-07-14 DOI: 10.1016/j.sctalk.2025.100474

K. Shilpa , Devadas Menon , V.M. Saravanan

引用次数: 0

Proposal for a global quality indicator for the municipal public health system – GQIMPHS 关于城市公共卫生系统全球质量指标——GQIMPHS的建议

Science Talks Pub Date : 2025-09-01 Epub Date: 2025-05-26 DOI: 10.1016/j.sctalk.2025.100466

André Gomes Coimbra , Otil C.D. dos Santos , Angélica C.G. Santos , João B. Mendes , Marcos F.S.V. D'Angelo , Matheus P. Libório , Reginaldo M. Macedo , Elisa Fusco , Petr Ekel

引用次数: 0

Exploring Clinical Placement Education Unit (CPEU) experiences from the nursing bachelor's degree program at the University of Parma 帕尔马大学护理学士学位课程的临床实习教育单元（CPEU）经验探索

Science Talks Pub Date : 2025-09-01 Epub Date: 2025-05-27 DOI: 10.1016/j.sctalk.2025.100465

Pierangela Pompini , Maurizio Beretta , Nunzia Montesanto , Chiara Canini , Girolama Gaia Carlucci , Giovanna Casella , Massimo Guasconi , Andrea Contini , Maria Gaetana Droghi , Vittorio Casati , Simona Galante , Rachele La Sala , Pasquale La Torre , Davide Lazzeroni , Giuseppe Marletta , Samantha Grimaldi , Antonio Bonacaro , Cinzia Merlini

{"title":"Exploring Clinical Placement Education Unit (CPEU) experiences from the nursing bachelor's degree program at the University of Parma","authors":"Pierangela Pompini , Maurizio Beretta , Nunzia Montesanto , Chiara Canini , Girolama Gaia Carlucci , Giovanna Casella , Massimo Guasconi , Andrea Contini , Maria Gaetana Droghi , Vittorio Casati , Simona Galante , Rachele La Sala , Pasquale La Torre , Davide Lazzeroni , Giuseppe Marletta , Samantha Grimaldi , Antonio Bonacaro , Cinzia Merlini","doi":"10.1016/j.sctalk.2025.100465","DOIUrl":"10.1016/j.sctalk.2025.100465","url":null,"abstract":"<div><h3>Introduction</h3><div>Clinical placement is a vital component of nursing education, offering the opportunity to integrate theoretical knowledge with practical application. Among the factors that significantly influence this experience, clinical tutoring models plays a crucial role in the development of key competencies.</div></div><div><h3>Objectives</h3><div>To evaluate the impact of Dedicated Education Unit (DEU) on the quality of nursing students' teaching and learning experiences at the Piacenza Teaching Hospital and to explore its effect on job satisfaction.</div></div><div><h3>Methods</h3><div>A mixed-methods study was conducted from June 2023 to June 2024 included nursing students and nurses from the neuro-rehabilitation unit. Qualitative data were gathered through semi-structured interviews and analysed according to the Braun and Clarke thematic analysis model. Quantitative data were collected via two validated questionnaires and analysed using descriptive statistical methods.</div></div><div><h3>Results</h3><div>The qualitative findings reveal that this innovative placement model promotes autonomy, team integration, and the development of interpersonal skills. Quantitative results show that the absolute median values for both questionnaires were higher among participants in the DEU group compared to those exposed to the traditional clinical placement experience.</div></div><div><h3>Conclusions</h3><div>The DEU model seems to be effective in enhancing learning and in bridging theory with practice. Challenges related to high student numbers and resistance to change were identified.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"15 ","pages":"Article 100465"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural empowerment and speaking up among overseas trained nurses in the United Kingdom, National Health Service 英国国家医疗服务体系中受过海外培训的护士的结构性赋权和发声

Science Talks Pub Date : 2025-09-01 Epub Date: 2025-06-06 DOI: 10.1016/j.sctalk.2025.100472

Roslyn Mattukoyya, Pamela Knight-Davidson, Chinenye Ubah

{"title":"Structural empowerment and speaking up among overseas trained nurses in the United Kingdom, National Health Service","authors":"Roslyn Mattukoyya, Pamela Knight-Davidson, Chinenye Ubah","doi":"10.1016/j.sctalk.2025.100472","DOIUrl":"10.1016/j.sctalk.2025.100472","url":null,"abstract":"<div><div>Structural empowerment within workplaces plays a crucial role in enabling the overseas trained nurses' confidence to speak up against unsafe practice and be affected by adverse workplace culture. In this study levels of structural empowerment were explored utilizing the Condition for Work Effectiveness Questionnaire 2 and hypothetical vignettes to understand speaking-up practices among Overseas trained nurses.</div><div>Moderate levels of structural empowerment were perceived in the domains of <em>access to opportunity</em> (M = 4.05; SD = 0.09) and <em>access to information</em> (M = 3.52; SD = 0.77). Lower levels were perceived in the domains of <em>access to resources</em> (M = 3.04, SD = 0.88) and <em>access to support</em> (M = 3.49; SD = 0.91)<em>.</em> The majority (95.8 %) reported high levels of willingness to speak-up. Access to opportunity and information positively influenced speaking up.</div><div>Nurses perceive that opportunities to gain new skills and knowledge and information about the values and goals of the organization can empower them to speak up. These areas should be developed in NHS, messages reinforced, and initiatives taken to build confidence around patient safety practices. Their perceived inadequate access to support, through feedback and guidance from co-workers and inadequate access to resources, indicates a need to optimize strategies to address these areas to maintain and enhance patient safety culture.</div></div>","PeriodicalId":101148,"journal":{"name":"Science Talks","volume":"15 ","pages":"Article 100472"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144271218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0