bluuebunny/crossref_metadata_2025 huggingface dataset:
“Mutual Sustenance”: Co‐constructing the Foundation for Vulnerability in the Participant/Researcher Relationship through an Ethnographic Study of Vehicle Residents' Information Practices
Authors: Montague Kaitlin E.
Published: October 2024

Information Science (IS) researchers and practitioners aim to understand information seeking and needs across vulnerable communities. These relationships possess insider and outsider dynamics between researchers and participants. To foster vulnerability, trust, and empathy in the research process and to meet participants where they are in the research process, it may be beneficial for IS researchers to incorporate and consider concepts like reflexivity and positionality. The concept of the “vulnerable observer” (Behar, 1997) was implemented to frame the humanization of the researcher through an ethnographic study of vehicle residents as a vulnerable population. The relationships developed with participants serve as the grounds for which vulnerability can flourish through the utilization of safe environments. A safe, familiar environment for the participant is an important ingredient to produce trust and reciprocity. Reciprocity has the potential to lay the groundwork for a vulnerable foundation built on trust and rapport.
Healthcare Disparities in Telemedicine Access and Use During the COVID‐19 Pandemic
Authors: Montiel Jesus , Moy Amy Q. , Dodson Samuel
Published: October 2024

This study investigates disparities in telemedicine access and use among racial groups in the United States during the COVID‐19 pandemic. Our analysis of a dataset from the National Center for Health Statistics (NCHS) reveals that telemedicine access and use varied significantly across racial groups, which the NCHS categorized as “Black,” “Hispanic,” “White,” or “Other.” Hispanic respondents were more likely to lack a regular place of care, which might explain their lower access to telemedicine, relative to other groups. White respondents reported relatively high telemedicine access. Black respondents also reported relatively high rates of telemedicine use, contrary to the literature suggesting lower healthcare access among African Americans. Findings underscore the need for public health agencies to disseminate information about telemedicine to all community members. We suggest future research exploring the socioeconomic barriers impacting individuals' ability to access and use telemedicine.
Trends in Data Curation: Competencies and Tools
Authors: Murillo Angela P. , Yoon Ayoung
Published: October 2024

Library and information science has led data curation research and education for the last two decades, providing data curation education, professional development programs, and a robust professional opportunity. To keep current with the latest trends in competencies and tools needed to conduct data curation activities, this research conducted a systematic literature review of literature that captures competencies and tools to build a framework of current trends in data curation work that educators can utilize to ensure up‐to‐date educational materials for the next generation of data curation professionals. This poster presents the preliminary findings of this data curation competencies and tools analysis.
Putting People First: Unpacking the Relationship Between Social Media Influencers and Feminism
Authors: Charlotte Nau , Molly Patel , Anabel Quan‐Haase , Jinman Zhang
Published: October 2024

This narrative review synthesizes knowledge at the intersection of social media scholarship, the role of influencers in disseminating information about feminist causes. Feminist activism on social media, such as hashtag activism like #MeToo, has received much attention from scholars, but the role of influencers in disseminating information remains understudied. Much of the past research has examined the commercial nature of influencers. We conducted a narrative review using the search results from eight academic databases. We examined three research questions: (1) what types of social media influencers have been studied, (2) what feminist approaches were drawn on, (3) and what are influencers' functions in the dissemination of information on feminist causes. We found that the literature had covered influencers from many parts of the world whose content focuses on various areas of life, with some specifically advocating antifeminism. We also found that feminist theoretical approaches, mainly surrounding neoliberalism and post‐feminism, have informed much of this research. Finally, we found that the studies within feminism as challenging norms and expectations, calling out social issues, and building community. From these findings, we derive directions for future studies and the continuation of our project.
The Mechanics‐Conditions Framework as a Tool for Critical Social Media Affordance Analysis
Authors: Nau Charlotte
Published: October 2024

Affordances, described as action opportunities emerging from the relationship between a technology and its user, are a popular framework for understanding how people engage with social media platforms. Scholars have proposed this framework as a tool for performing critical analyses of technology, arguing that drilling down on affordances can help us understand how power shapes technology use. This conceptual analysis builds on the affordance mechanisms and conditions framework by Davis. Davis proposed to think of affordances in terms of mechanisms (request, demand, encourage, discourage, refuse, allow) and conditions (perception, dexterity, and cultural and institutional legitimacy). This framework sheds light on to whom and under what circumstances technologies afford certain actions to its users. I apply this framework to social media and provide examples that illustrate the framework's components. For each component, I include a set of suggested questions that a researcher interested in a critical social justice‐oriented analysis of social media affordances might ask. Asking these questions, I argue, can support a researcher in dissecting the biases, stigmata, and discrimination embedded in social media.
College Students' Attitudes & Information Literacy Knowledge Related to Privacy on TikTok
Authors: Oh Sein
Published: October 2024

This study is a project designed to be part of the PhD dissertation research as a pilot aimed at assessing the study's feasibility and its potential for refinement. The paper presents a study that explored the attitudes and knowledge of college students toward privacy in TikTok. This paper aims to comparatively assess student privacy literacy and privacy‐related concerns along with their response patterns towards the Florida State University policy banning TikTok on campus networks. The study utilizes semi‐structured, qualitative interviews to collect data from five undergraduate students (age 18–24) at Florida State University. It has analyzed and discussed the data collected from these interviews to achieve greater insight into the privacy literacy of students, their privacy concerns, and how Generation Z (Gen Z) students view institutional policies affect their use of social media. Preliminary findings suggests students are skeptical of the ban due to perceived ineffectiveness of the school policy. Analysis showed the new school rules had little effect on students' usage pattern or the amount of time they spent using TikTok.
Information Literacy Education in University Libraries: A Comparative Study in Taiwan and South Korea
Authors: Park Kyuri , Hsieh Yi‐Shan
Published: October 2024

This study aims to compare the information literacy education practices of university libraries in Taiwan and South Korea using the Framework for Information Literacy for Higher Education (ACRL, 2016). The result shows that while Taiwanese institutions demonstrate comprehensive coverage across all six frames, South Korean university libraries lack some frames. The identified gaps will be analyzed thoroughly with ongoing research. This research will contribute to understand the shortcomings in the information literacy education provided by university libraries and suggest how we can further research and improve in the future.
Discipline as Context: Arts and Science Students' Views on Key Concepts in the ACRLFramework
Authors: Pienaar Claire , Bartlett Joan C.
Published: October 2024

The introduction of the Association of College and Research Libraries' (ACRL, 2016) Framework for Information Literacy for Higher Education, or “the Framework,” has fostered efforts to apply the document's concepts to information literacy instruction (ILI) to meet the needs of post‐secondary students across faculties. However, little research has directly compared students' perspectives on the Framework's concepts by discipline. This poster presents findings from a larger, mixed‐methods project investigating student perspectives on the Framework in which participants in the faculties of arts (n = 123) and science (n = 90) expressed distinct views and rankings. Their perspectives particularly diverged around perceived roles in assessing the authority of information sources and how “relevant to their experience in school” they found most Framework frames. This project expands upon emerging learner‐centered research aiming to meaningfully improve Framework‐based ILI through its direct disciplinary comparisons and use of the recently developed Information Literacy Reflection Tool (ILRT; Robertson et al., 2022).
Putting “First Peoples” First: Participatory Design of a Digital Storytelling System for Inuvialuit Communities
Authors: Shiri Ali , Farnel Sharon , Rao Supriya
Published: October 2024

This poster presents a community‐focused participatory design methodology as a basis for developing a digital storytelling system for the Inuvialuit Settlement Region in Canada's Western Arctic. It provides an overview of the various stages of digital storytelling system prototype design informed by an Inuvialuit elder's storytelling gathering and a community experience open house. Among the prototype redesign ideas are empathy maps we are using to allow us to connect stories with designs and community needs in mind.
Social Influence, Trust and Future Usage: A study of BIPOC Users of CHATGPT and other AI Chatbots
Authors: Stewart Brenton J. , Park Sunyoung , Ju Boryung
Published: October 2024

In this paper we examine the determinants (trust and social influence) that influence users' future use intentions of generative artificial intelligence (AI) applications among black, indigenous and other people of color (BIPOC) users of generative AI applications such as ChatGPT and other large language models. An online survey instrument was administered to 119 BIPOC identified individuals residing in the United States. Descriptive and inferential statistics were used to analyze data through SPSS. Results indicate no statistically significant differences among ethnic/ racial groups in social influence and continued use intentions. However, with respect to trust, Hispanic/LatinX users perceive information from AI chatbots as more trustworthy and accurate, and that their search activity was more secure than other BIPOC populations. The study also found that trust and social influence were significant factors driving future use intentions.
Information Practices and the Production of Scientific Knowledge through Sound
Authors: Stewart‐Robertson Owen
Published: October 2024

Environmental sound recording is increasingly vital to the production of scientific and ecological information and knowledge. While research applications have grown tremendously, there is a lack of empirical research around the practices and experiences of those responsible for creating and managing these recordings. This poster reports on initial findings of a qualitative research project that interviewed 30 academic and professional researchers from across Canada and the United States, exploring information activities and meaningful elements and actors involved in their interactions with environmental sound recording. From preliminary findings, two themes are discussed: sound and listening skills involved in the creation and analysis of environmental sound recordings are complex, multisensory information practices, and changing environments and technological affordances enable and constrain the seeking and sharing of information and resulting knowledge production.
The Relationships between Influencers and Followers Who Troll and Proactive‐Reactive Trolling
Authors: Sun Honglei , Fichman Pnina
Published: October 2024

Little is known about the differences between trolling by influencers and followers, the difference between proactive and reactive trolling, and the relationship between them. Based on a content analysis of 1,386 comments on 160 posts of 19 influencers during a Sina Weibo trolling event, we found that influencers troll more frequently than their followers and they troll proactively more often than reactively, while followers troll reactively more often than proactively. Influencers generated less but more impactful content compared with their followers. In both proactive and reactive trolling, influencers derailed the discussion while followers provoked through their proactive trolling and insulted through their reactive trolling. These findings extend the research scope of trolling asymmetry and establish theoretical connections between social media roles and proactive‐reactive trolling.
Evolving Prefectural Libraries in Japan: A Comparative Study of Tokyo and Hokkaido
Authors: Takeuchi Mako , Igarashi Tomoya , Koizumi Masanori
Published: October 2024

Traditional roles of Japanese prefectural libraries involve supporting and advising municipal libraries. However, since the 2000s, their roles have diminished owing to financial downturns, an aging population, and municipal libraries' establishment, forcing them to redefine their missions and services to remain relevant. This study aimed to determine whether differences exist in the services of prefectural libraries based on the varying status of municipal libraries and to illustrate these differences through case studies on a pilot basis. The following three research questions were posed: (1) Do differences exist in the services provided directly to citizens? (2) Do differences exist in the services provided through municipal libraries? (3) Do differences exist in the services supporting municipal libraries? Using hierarchical cluster analysis, Tokyo and Hokkaido were selected for a comparative case study. The findings indicate significant differences in services, influenced by establishment rates and service levels among municipal libraries.
Health Advice from Instagram Influencers on Polycystic Ovary Syndrome (PCOS): Their Strategies to Establish and Manipulate Credibility
Authors: Trocchi Vanessa , Quan‐Haase Anabel , Rubin Victoria L.
Published: October 2024

Individuals with polycystic ovary syndrome (PCOS) turn to Instagram influencers as an alternative or complementary PCOS information source to their physicians. However, the ambiguous qualifications of influencers, and contradicting claims regarding how to manage PCOS, make it difficult to identify credible sources. Using a directed qualitative content analysis, we examined the range of strategies that 10 Instagram PCOS influencers used to signal credibility. We found that influencers utilized a range of pseudo‐credibility strategies. Another key contribution of the study is a description of how PCOS influencers reference sources to signal credibility. We also found that Instagram PCOS influencers discuss what it means to be healthy with PCOS, and we describe how they contribute to a wider cultural participation in healthism. The findings build upon the source credibility literature to identify novel credibility cues used by influencers as social media platforms evolve, and further, reveal the underlying healthism‐centric discourse of PCOS influencers.
College Adjustment and Information Experience of First‐Generation College Students' Coursework and Extracurricular Learning
Authors: Tsai Tien‐I , Chen Ting‐Yu , Yeh Hsuan‐Tung , Chang Yu‐Hsuan , Lo Tzu‐Pin
Published: October 2024

The current study aims to explore college adjustment and information experiences of first‐generation college students in coursework and extracurricular learning contexts. Information World Mapping visual‐elicitation interviews were conducted with 25 first‐generation college students from two elite universities in one university system. We found that while first‐generation college students tend to feel fallen behind, and be somewhat remote from professors and peers, they make use of all resorts to thrive in both coursework and extracurricular learning experiences. Most of their personal‐meaningful coursework experiences are academic group work; their extracurricular learning experiences are career‐oriented. Implications were discussed based on the findings.
The Impact of Preprints on COVID‐19 Research Dissemination: A Quantitative Analysis of Journal Publications
Authors: Tsunoda Hiroyuki , Sun Yuan , Nishizawa Masaki , Liu Xiaomin , Amano Kou , Kominami Rie
Published: October 2024

Preprints have played an unprecedented role in disseminating COVID‐19‐related science results to the public. The study aims to elucidate the role of preprints during the COVID‐19 public health emergency (2020–2023) through a quantitative analysis of journal papers. Among the 247,854 COVID‐19‐related papers published in PubMed, 12,152 were initially released as preprints and were eventually published in 1,380 journals. This number is more than five times the 246 journals to which submissions can be made directly from bioRxiv through the B2J program. Journals with higher impact factors and Normalized Eigenfactor scores tend to publish a larger number of preprint‐derived articles. The proportion of preprints among PubMed papers was 0.049, but this varies significantly by journal. In the top 30 journals, most exceed this proportion, indicating that these journals are preferred by authors for submitting their work. These findings highlight the growing acceptance and impact of preprints in the scientific community, particularly in high‐impact journals.
SMART: Search Maps and Routes/Trails of Both Subtasks and Sources to Support Complex Task‐based Search
Authors: Wang Afeng , Wang Fan , Zhang Zhijian , Zhao Yiming , Ma Feicheng
Published: October 2024

Towards the goal of constructing an agent that can assist users in completing complex tasks and searching for information from multiple sources. We propose a complex task‐supporting application, SMART (Search Maps and Routes/Trails), which combines complex task modeling through users' web activities and expands search support to include maps and routes/trails of both subtasks and sources within complex tasks through case‐based reasoning. We also summarize the results of a user study conducted to evaluate the usability of the SMART prototype system. The experimental results show that SMART could help searchers make search strategies, select information sources effectively, increase confidence during task performance, and improve search results. This highlights the value of both types of maps and routes/trails of subtasks and sources in complex task‐supporting.
What Makes an Answer Feel Credible: An Empirical Study on Information Credibility in Social Q&A Community
Authors: Wei Ziyi
Published: October 2024

Although the Social Q&A community has gained increasing popularity in solving issues in various fields, how users perceive the information credibility on this platform remains inconclusive. This paper developed the model to discuss the relationship between linguistic cues/perceived reputation and information credibility. Methodologically, the paper used an online survey to collect 759 units of valid data and test the model through the SEM technique. The results showed that perceived specificity, logic, relevance, and reputation are positively related to information credibility, while perceived expressed emotion showed a negative association. These findings help to inspire answer contributors to employ strategies to make their answers more credible.
Putting People First in Data Quality: Feminist Data Ethics for Open Government Datasets
Authors: Wickett Karen M. , Lamba Manika , Newman Jarrett
Published: October 2024

Open government information systems offer great potential for advancing civic life and democracy, but they also reflect and reinforce the biases and systematic inequalities faced by members of socially marginalized groups. We present results from a critical data modeling project that uses a data quality framework to examine open datasets published by police departments in order to understand how data modeling choices shape the social impact of these datasets. Using an arrest record dataset published by the Los Angeles Police Department as a case study, we present we present results detailing the representation of racial data and the presence of children in the dataset. We argue that current data quality frameworks for open government data are insufficient for critical data studies due to an orientation around institutional and computational interests. Incorporating feminist data ethics into data quality analysis provides an approach to data quality that centers people and communities. We propose a definition for data quality of open government datasets based on an ethics of care that centers the needs of vulnerable populations and accountability of institutions toward their communities.
Indexing for Fine Arts Monographs: A Comparison Between User Queries and Controlled Vocabularies
Authors: Wu Shuheng , Tong Shunrong
Published: October 2024

Prior research suggested the empirical approach to indexing for fine arts based on users' search queries. This study examined the characteristics of user queries submitted to the library catalog of a fine arts academy, and compared users' search terms with controlled vocabularies to assess their levels of matching. Based on search‐log analysis, this study identified eight categories of user queries and 10 subcategories, indicating that the information needs of the fine arts community are diverse in language and culture and focus on named entities, disciplines, and various types and levels of fine arts. The mapping between user queries and controlled vocabularies found that around 20% of user search terms were non‐matching. Based on the findings, this study provided suggestions for improving the search functions of library catalogs and enhancing controlled vocabularies to support the retrieval of fine arts monographs.
Understanding Research Data Licensing in the Usage Categories
Authors: Yang Li , Kipp Margaret E. I. , Chen Jianyao
Published: October 2024

Licensing data is critical to promote research data sharing and reuse. There are many standard licenses, customized licenses, terms of use, and use agreements used in practice, which are heterogeneous and hard for data providers to choose. This study used a qualitatively‐driven‐mixed method, including stratified and systematic sampling methods, and Grounded Theory to explore data licensing of the Dataverse repositories. We focused on the data usage and created a list of categories of permitted and restricted data usage. The categories help data providers understand and choose appropriate licenses when sharing data. They also build a foundation for our future work to create a faceted knowledge structure for research data licensing.
The Role of Paying for Access in the Online Information Seeking‐Behavior of Canadian Midwives: Preliminary Findings
Authors: Yeboah Richmond B. , Bartlett Joan C.
Published: October 2024

It is of paramount importance to support midwifery practice with research evidence. Nevertheless, Canadian midwives encounter significant obstacles in accessing research evidence for practice. As part of a broader study which seeks to identify an optimal method for providing midwives in Canada with access to online clinical resources, this poster reports on the preliminary findings of the survey phase. The objective of this study was to ascertain the frequency with which Canadian midwives utilize information sources accessible to them through institutional affiliations and to determine whether they are aware of the financial cost of providing such services. Additionally, the survey sought to ascertain whether their perception of a resource being free, or premium affects its perceived value and use intentions. A descriptive survey design employing a structured web‐based questionnaire was used to collect the requisite data. The preliminary findings indicated that participants perceived the value of free sources to be lower than premium sources and that they intended to use premium sources more frequently if they were able to pay for them. Moreover, the study demonstrated that participants frequently seek information online to support clinical practice, yet they utilize access to online resources through their institutional affiliation less so.
“All Eyes on McMinn:” Book Banning Discourse in the Age of Social Media
Authors: Zalot Andrew
Published: October 2024

This project explores the intersection of local and online discourse around book bannings using the McMinn County School Board's decision in 2022 to remove Art Spiegelman's graphic memoir, Maus, from their school curriculum as a case study. Through interviews with McMinn County residents and data collected from Twitter, I argue that social media has altered book banning discourse. I interviewed 10 residents and asked them to discuss their experiences when Maus was removed by the school board and to reflect on how the local community responded amidst worldwide scrutiny online. Discourse on Twitter involved collecting over 2000 tweets mentioning the @McMinnCountySch account and tweets discussing Maus to understand online responses to the board's decision. I use Danielle Allen's discourse flow model as the theoretical framework for this project. In my initial findings, discourse began at the local level before traveling online and then back into the local space. Ongoing data analysis has shown that locally, residents were concerned with the board's decision along with the perception of their community once news of the banning spread. This is supported by Twitter discourse, where many tweets cast the McMinn County community in a negative light based on the school board's actions.
Putting People First: A Multimodal Bi‐Stream Structure‐based Model for Bias Mitigation
Authors: Zhou Shu , Bu Wenru , Li Xiaomin , Wang Hao
Published: October 2024

Research into multimodal model biases has largely concentrated on gender and racial issues, neglecting key areas such as biases related to religion, nationality, sexual orientation, and disabilities, as well as the subtleties of question intent and common biases. To address these gaps, we developed the Multimodal Bi‐Stream Structure‐based Model (MBSS) for Bias Mitigation, an innovative approach that focuses on these underrepresented groups by focusing on religion, nationality, sexual orientation, and disability but also to identify common biases and question intents. The MBSS employs a dual stream bias mitigation system, where the standard stream addresses common biases and the mitigation stream targets specific biases, allowing for nuanced and effective bias reduction by making decisions based on the difference in predicted probabilities between these two streams. Empirical results demonstrate MBSS's efficacy, especially in reducing religious bias by up to 71%, highlighting its potential to foster a more inclusive digital environment and enhance the representation of diverse groups.
A tale of two disasters: Unpacking how social learning from the Ebola epidemic shaped COVID‐19 response in informal settlements in Freetown
Authors: Diko Stephen Kofi , Okyere Seth Asare , Frimpong Louis Kusi , Mensah Stephen Leonard , Abunyewah Matthew , Amankwaa Gordon
Published: October 2024

Prior disaster experiences often provide lessons for communities to respond to new disasters. In informal communities prone to disasters but conditioned within reactive disaster management regimes, residents and Community‐Based Organizations (CBOs) play immense roles in disaster risk reduction and response. In Freetown, Sierra Leone, limited government disaster capacities during health disasters like Ebola and the COVID‐19 pandemic occasioned community action led by residents and CBOs. This paper, utilizing qualitative data, draws on the social learning theory to unpack how residents’ and CBOs’ experiences with the Ebola epidemic provided profound lessons that contributed to the COVID‐19 pandemic response in two informal communities. Findings highlight how prior disaster experiences consolidate memory and generate attention, retention, motivation, and reproduction of lessons for future disasters. The paper also fronts how lessons from peoples’ lived experiences with disasters can offer pluralistic ways of knowing about disasters and responding to future risks through co‐productive and equitable strategies.
Preparation, Characterization, and Adsorption Performance of H2TiO3 Lithium Ion Sieves with Homogeneous Nanoparticles: Kinetics, Thermodynamics, and Mechanism Analysis
Authors: Liu Jing , Xu Nai‐Cai , Shi Dan‐Dan , Cao Yue , Zhang Tian‐Ying , Zhong Kai‐Peng , Zhao Qi , Bian Shao‐Ju
Published: October 2024

Li2TiO3 precursor with layered structure is successfully prepared by template‐free method using anatase TiO2 and Li2CO3, followed by the treatment of dilute hydrochloric acid, which leads to obtaining H2TiO3 lithium ion sieve nanoparticles with uniform dispersion and small size. The adsorption performance and mechanism of the H2TiO3 are being studied. The experimental results show that the H2TiO3 lithium ion sieve has a large BET specific surface area (19.10 m2 g−1) and good thermal stability. At the same time, it also has a high adsorption rate and adsorption capacity (55.13 mg g−1) towards Li+ in solution due to its high dispersibility and uniformity of particle size, which can expose more adsorption sites in LiCl solution. The adsorption capacity of the H2TiO3 lithium ion sieve can reach 46.63 mg g−1, which achieves 84.58% of the equilibrium adsorption capacity. The equilibrium adsorption parameters follow the Langmuir model perfectly, demonstrating that Li+ undergoes monolayer adsorption. The results of thermodynamic and kinetic analysis show that the adsorption behavior of H2TiO3 is spontaneous and conforms to the pseudo‐second‐order kinetic model, indicating the adsorption process is controlled by chemosorption. In addition, after five adsorption/desorption cycles, the H2TiO3 lithium ion sieve still shows a high adsorption capacity of 46.15 mg g−1, and the dissolution loss of titanium is only 0.14%, which shows that the cycle stability is excellent. XPS and zeta potential analyses illustrate that the adsorption mechanism of Li+ on the H2TiO3 is an ion exchange reaction between Li+ and H+, combined with the electrostatic attraction of the adsorbent surface. Additionally, the adsorption performance of H2TiO3 lithium ion sieve in West Taijinaier Salt Lake brine was tested, and the adsorbent material proves itself is a perspective candidate for lithium extraction from aqueous lithium resources.
Valuing who we are in relation to others: The ‘praxis of co’ in an Anthropocene‐world. The 2025 agenda for the cybersystems community
Authors: Klein Louis , Buckle Pamela , Nguyen Nam , Preiser Rika , Vandenbroeck Philippe , Ison Ray
Published: October 2024

In our Agenda Essays to date, we have argued the need to frame contemporary circumstances in terms of the Anthropocene‐world we humans have created. We also prioritise the five‐decade‐old, prescient analysis of humanity's predicament as the ‘global problématique.’ Earlier, we advocated for identifying comprehensive modes of ‘collaborative agency’ to better unleash the transformative potential inherent in cybersystems thought and action. In the present essay, we continue this reflection. What does the enhancement of collaborative agency look like, and what can various modes hope to deliver? To what extent does immersion in cybersystemic traditions inform the design possibilities for acts of co? We offer critical reflections on the individual, organisational and community ecologies within which this ‘praxis of co’ is emerging. A key take away here concerns how processes of valuing shape the enactment of the ‘praxis of co,’ particularly as it cannot be realised outside conversation. Understanding oneself is always and inescapably conducted in relationship with others, but progress in the ‘praxis of co’ requires a dance between responsibility and response‐ability—an ethic (responsibility) that exists in duality with enablement or affordance (response‐ability). Moves towards organisational or operational interdependence are contingent on responsible autonomy, grounded in an axiology that is both operational and ethically defensible.
Progressive collapse resistance of prestressed concrete frame structures with infill walls considering instantaneous column failure
Authors: Qu Tao , Zeng Bin , Zhou Zhen , Huang Linjie , Chang Dong
Published: October 2024

Prestressed concrete frames with infill walls (IW‐PC frames) are commonly used in civil engineering as a structural element. The possibility of structures undergoing progressive collapse is a cause for concern due to its severe consequences. This has become a significant topic in the academic community in recent years. However, research on the resistance of IW‐PC frame structures to progressive collapse is still insufficient. Therefore, this paper investigated the dynamic effects of progressive collapse on the IW‐PC frame, reinforced concrete frame with infill walls (IW‐RC), prestressed concrete frame (PC), and common reinforced concrete frame (RC). The study was conducted using the finite element software OpenSees. The study revealed that the vertical displacement during stabilization of the IW‐PC frame increased by 92.5% and 71.7% compared to the IW‐RC frame and decreased by 93.9% and 92.6% compared to the PC frame for middle column and side column failure, respectively. Additionally, the IW‐PC frame exhibited the highest dynamic load carrying capacity, which was 7.67 and 7.56 times higher than that of the RC frame, respectively. The mechanical properties of the frame were altered by the coupling effect of prestressed tendons and infill walls, making the IW‐PC frame more monolithic.
The long arc of learning: Perspectives and innovations from 20 years of U.S. National Professional Development Program projects
Authors: Teemant Annela , Sherman Brandon J. , Tyra Serena
Published: October 2024

U.S. National Professional Development (NPD) grants can afford a longitudinal understanding of how teachers learn to support English learners. When NPD projects are completed successively and successfully, they can provide an even greater longitudinal arc of understanding. This article chronicles the designs and lessons learned across five NPD grants between 2002 and 2023. Each grant represents a snapshot in time, presenting a set of assumptions from the field, programmatic innovations, and insights from research outcomes. From highlighting the difference between incremental and radical pedagogical change and what it takes to move beyond individual teacher change to systemic change benefiting multilingual learners, the article outlines the succession of aspirations (capacity building, sustainability, and scalability), experiences, changing conditions, and data points framing lessons learned and new cycles of praxis. This article offers implications for theory, practice, and research. It stands as an argument for adapting, innovating, and moving beyond the status quo to inspire more innovation in teacher preparation for multilingual learners.
Mathematical thermo‐mechanical analysis on flame‐solid interaction: Steady laminar stagnation flow flame stabilized at a plane wall coupled with thermo‐elasticity model
Authors: Yu Chunkan , Malayeri Mohammad Mahdi , Böhlke Thomas , Chen Zheng , Minuzzi Felipe
Published: October 2024

A laminar stagnation flow flame stabilized at a plane wall is theoretically analyzed, coupled with a thermo‐elasticity model in the wall. Mathematical models for both the flame and the wall will be proposed, and corresponding analytical solutions based on their dimensionless forms will be obtained. The mathematical analysis of this flame‐solid interaction primarily focuses on the effect of the flame on combustion‐induced thermo‐mechanical stresses and the influence of wall material on flame properties such as flame temperature and stability against extinction. A sensitivity analysis is further performed to examine how thermo‐mechanical stress inside the wall is affected by changes in other combustion conditions (e.g., mixture composition, flame stretch rate). This study offers valuable insights into understanding the interaction between flames and solids, a relationship crucial in engineering applications such as the interaction between combustion processes and blades within gas turbine machinery.
Costs and Benefits of Open Science: Contributing to the Development of a Rigorous Assessment Framework
Authors: Catalano Gelsomina , Delugas Erica , Vignetti Silvia
Published: October 2024

The concept of Open Science (OS) is transforming the landscape of scientific research by promoting collaboration, transparency, and innovation. Acknowledged by policymakers and international organisations, OS is integrated into policy agendas recognising its potential to shape the future of research. Despite significant progress, Open Science faces challenges in showing economic impacts, which undermines its maximal adoption. Empirical evidence on positive economic outcomes, such as cost savings and the emergence of new products and collaborations, exist, but there is a scarcity of comprehensive economic impact studies comparing open and closed science. This article advocates for the use of Cost–Benefit Analysis (CBA) as an analytical tool to systematically assess the advantages and disadvantages of OS. CBA, traditionally applied to sectors like transport and health, can provide a structured framework for mapping and evaluating the costs and benefits of OS, contributing to a more informed understanding of its societal desirability.
Research on Real-Time Intelligent Control Technology for Runoff Cascade Hydropower Station Group
Authors: Lijuan Bian , Zhang Yi , Shuming Li
Published: October 2024

An in-depth research was conducted on the real-time scheduling issues involved in the joint operation of runoff cascade hydropower station under high-intensity peak-load regulation and frequency regulation requirements, and proposed an intelligent control method for real-time load regulation of runoff cascade hydropower stations. Based on the characteristics of real-time power generation scheduling of cascade hydropower stations, ensuring the effectiveness and flexibility of scheduling strategies, taking into account the constraints of reservoir operation, grid safety, unit operation, and the impact of different water heads on unit power generation efficiency, aiming to achieve stable water level control of runoff type hydropower stations and rapid response of cascade total load control. Real time load Control is divided into two categories: dispatching mode and non dispatching mode. In the dispatching mode, constructed water power determination, stable water level, less load regulation, load balance economic dispatching models, to predict in advance whether the day ahead load planning curve needs to be adjusted and automatically track the planning curve. In non dispatch mode, automatically match the abnormal water level control model based on PID regulation and the stable water level model that meets the requirements of efficient power generation. At the same time, proposed a water level control solution method based on successive approximation and multi-objective dynamic programming, as well as a mixed integer programming model for reducing the difficulty of solving real-time hydropower scheduling for load allocation. The application of the proposed model in the cascade hydropower stations in the Shaxi River Basin shows that it can achieve high-precision automatic load adjustment, effectively reduce the number of regulation times by 6%, and only retain one dispatcher per shift, greatly reducing the work intensity of operators on duty. This research effectively improves the centralized control capability and economic operation level of the watershed, and has rich theoretical and practical significance for promoting the intelligent and intelligent construction of real-time load scheduling for cascade power stations.
Seismic Safety Evaluation of a High Arch Dam-Foundation Coupling System
Authors: Yan Chunli , Tu Jin , Liang Hui , Guo Shengshan , Li Deyu
Published: October 2024

The seismic safety evaluation of the dam is performed based on either dam strength failure or dam abutment instability failure according to the traditional deterministic methods and concepts in the current code. However, these two failure modes are interactive and inseparable, considering only one failure mode under a strong earthquake fails to fully reflect the actual seismic performance of high arch dams. To develop a more realistic seismic safety evaluation framework for high arch dams, this paper constructs a finite element analysis model that considers the coupling of dam strength failure and dam abutment instability failure. The nonlinear dynamic response analysis of the high arch dam-foundation coupling system is conducted using the seismic overload analysis method. Different performance evaluation indexes, such as damage depth-thickness ratio, sliding area ratio, and the residual displacement of the dam crest relative to the dam bottom in the stream direction, are proposed. The performance evaluation criteria and ultimate seismic capacity are defined and quantitatively assessed. The results indicate that 2.0 times the horizontal PGA can be considered the ultimate seismic capacity of the high arch dam-foundation coupling system, providing a reliable scientific basis for seismic safety evaluation of high arch dams.
Research on the Sediment Flushing Scheme Under the Layout of “Reservoir Replacing Pool + Bypass Flushing” Based on 2D Flow and Sediment Model
Authors: Yang Shuangchao , Liu Jinyang , Liao Yu
Published: October 2024

A two-dimensional flow and sediment model was used to study the sedimentation problem of a high head and high sand content hydroelectric power station in Nepal. Under the layout scheme of “reservoir replacing pool + bypass flushing”, a total of 12 sediment discharge operation schemes were proposed for the reservoir area under the combination of 3 flow limits and 4 sand discharge water levels. The results show that: After 5 years of operation of the project, there is a difference in the elevation of the sedimentation surface in front of the water intake. Different sand flushing operation methods have a significant impact on the elevation of the sedimentation surface in front of the water intake during the period of 7–17 years. Under various schemes, the trend of the elevation change of the sedimentation surface in front of the water intake after 17 years of operation of the head hub is basically consistent, and the difference is not significant. The elevation of the sedimentation surface in front of the water intake can be controlled at around 2505 m under each scheme; When operating at a sand discharge water level of 2520 m, the elevation of the sedimentation surface in front of the sand discharge tunnel can be controlled at around 2510 m, and the probability of sedimentation in the bypass sand discharge tunnel is not high; The project operates for about 10–15 years and is basically in a balanced state; Under the condition of 2520 m sediment discharge water level, the remaining effective storage capacity of the hub is larger after 20 years of operation under each scheme; This project follows the 2520 m sediment discharge water level scheme. When operating at a sediment discharge flow limit of 120 m3/s, the effective storage capacity of the reservoir meets the requirements of the designed daily regulating storage capacity. Therefore, it is recommended that this project operate according to the 2520 m sediment discharge water level scheme.
Corona Trials on Rotating Machinery with LuminarHd Ultraviolet Apparatus in Small Hydropower Plants - SHPs Technology and Innovation Company
Authors: Tavares Afonso Cesar , Santos Marcelino , Dellabeta Bruno
Published: October 2024

With the new technologies applied in the Power Electrical System, we enable the shared use of the Ultraviolet Measurement Apparatus, for Corona Measurement (the corona effect is just one type of partial discharge characterized by its visibility when propagating in external mediums due to electric field - potential) in Transmission Lines, into the Assets of Hydropower Plants with rotating machinery from Small Hydropower Plants - SHPs, within Predictive Maintenance. The gain from this Predictive Maintenance brought evaluation benefits in the reception after treatment of generators related to Partial Discharge on the surface, particularly the part related to surface corona effect on rotating machinery. Measurements before and after surface treatment recovery, mainly in coil heads and other parts of the generating unit, show us the results more through frequency spectrum, ranges, and events/minutes measures, associated with a scale already worked for measurement points in Transmission Lines assets, values understood above 5000 events/minutes and mainly the region with the highest concentration of records signaling points to improve or redo specific treatment. It's worth mentioning here that it doesn’t substitute tests by offline and online partial discharge devices in peak measures (pC) or nano Coulomb (nC), but it brings the focus spectral sampling region that deserves more attention or reinforcement in treatment to mitigate corona effect, also can be used to evaluate generator cleanliness when intensities are recorded in predictive maintenance. The SBUV camera, Solar Blind filter, has higher sensitivity, compatible wavelength, bi-spectral, and a range from 240 nm to 280 nm (nanometers), which can bring gains in this technological application. The tool, when customized, provides risk assessment for each generator in trials and ensures an operational view of the Asset from the perspective of its health in this regard - Health Index. The new technology is already implemented and has been successfully used in our plant, in its punctual maintenance plan regarding measuring, evaluating own or third-party services, and determining the best time to act in new surface treatments or asset cleaning, mitigating the risk of early burnout due to this phenomenon. Direct gains in application come from the integration of Asset Management with Reliability-Centered Maintenance, optimizing the Maintenance Plan and the concepts of Engineering Applied to the company's Assets.