460,197 results on '"Tan AT"'
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2. ChatGPT versus a Customized AI Chatbot (Anatbuddy) for Anatomy Education: A Comparative Pilot Study
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Gautham Arun, Vivek Perumal, Francis Paul John Bato Urias, Yan En Ler, Bryan Wen Tao Tan, Ranganath Vallabhajosyula, Emmanuel Tan, Olivia Ng, Kian Bee Ng, and Sreenivasulu Reddy Mogali
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Large Language Models (LLMs) have the potential to improve education by personalizing learning. However, ChatGPT-generated content has been criticized for sometimes producing false, biased, and/or hallucinatory information. To evaluate AI's ability to return clear and accurate anatomy information, this study generated a custom interactive and intelligent chatbot (Anatbuddy) through an Open AI Application Programming Interface (API) that enables seamless AI-driven interactions within a secured cloud infrastructure. Anatbuddy was programmed through a Retrieval Augmented Generation (RAG) method to provide context-aware responses to user queries based on a predetermined knowledge base. To compare their outputs, various queries (i.e., prompts) on thoracic anatomy (n = 18) were fed into Anatbuddy and ChatGPT 3.5. A panel comprising three experienced anatomists evaluated both tools' responses for factual accuracy, relevance, completeness, coherence, and fluency on a 5-point Likert scale. These ratings were reviewed by a third party blinded to the study, who revised and finalized scores as needed. Anatbuddy's factual accuracy (mean ± SD = 4.78/5.00 ± 0.43; median = 5.00) was rated significantly higher (U = 84, p = 0.01) than ChatGPT's accuracy (4.11 ± 0.83; median = 4.00). No statistically significant differences were detected between the chatbots for the other variables. Given ChatGPT's current content knowledge limitations, we strongly recommend the anatomy profession develop a custom AI chatbot for anatomy education utilizing a carefully curated knowledge base to ensure accuracy. Further research is needed to determine students' acceptance of custom chatbots for anatomy education and their influence on learning experiences and outcomes.
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- 2024
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3. Emergence of steady quantum transport in a superconducting processor
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Zhang, Pengfei, Gao, Yu, Xu, Xiansong, Wang, Ning, Dong, Hang, Guo, Chu, Deng, Jinfeng, Zhang, Xu, Chen, Jiachen, Xu, Shibo, Wang, Ke, Wu, Yaozu, Zhang, Chuanyu, Jin, Feitong, Zhu, Xuhao, Zhang, Aosai, Zou, Yiren, Tan, Ziqi, Cui, Zhengyi, Zhu, Zitian, Shen, Fanhao, Li, Tingting, Zhong, Jiarun, Bao, Zehang, Zhao, Liangtian, Hao, Jie, Li, Hekang, Wang, Zhen, Song, Chao, Guo, Qiujiang, Wang, H., and Poletti, Dario
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Quantum Physics ,Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Statistical Mechanics - Abstract
Non-equilibrium quantum transport is crucial to technological advances ranging from nanoelectronics to thermal management. In essence, it deals with the coherent transfer of energy and (quasi-)particles through quantum channels between thermodynamic baths. A complete understanding of quantum transport thus requires the ability to simulate and probe macroscopic and microscopic physics on equal footing. Using a superconducting quantum processor, we demonstrate the emergence of non-equilibrium steady quantum transport by emulating the baths with qubit ladders and realising steady particle currents between the baths. We experimentally show that the currents are independent of the microscopic details of bath initialisation, and their temporal fluctuations decrease rapidly with the size of the baths, emulating those predicted by thermodynamic baths. The above characteristics are experimental evidence of pure-state statistical mechanics and prethermalisation in non-equilibrium many-body quantum systems. Furthermore, by utilising precise controls and measurements with single-site resolution, we demonstrate the capability to tune steady currents by manipulating the macroscopic properties of the baths, including filling and spectral properties. Our investigation paves the way for a new generation of experimental exploration of non-equilibrium quantum transport in strongly correlated quantum matter., Comment: 7 pages, 4 figures
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- 2024
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4. Einstein Probe discovery of EP240408a: a peculiar X-ray transient with an intermediate timescale
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Zhang, Wenda, Yuan, Weimin, Ling, Zhixing, Chen, Yong, Rea, Nanda, Rau, Arne, Cai, Zhiming, Cheng, Huaqing, Zelati, Francesco Coti, Dai, Lixin, Hu, Jingwei, Jia, Shumei, Jin, Chichuan, Li, Dongyue, O'Brien, Paul, Shen, Rongfeng, Shu, Xinwen, Sun, Shengli, Sun, Xiaojin, Wang, Xiaofeng, Yang, Lei, Zhang, Bing, Zhang, Chen, Zhang, Shuang-Nan, Zhang, Yonghe, An, Jie, Buckley, David, Coleiro, Alexis, Cordier, Bertrand, Dou, Liming, Eyles-Ferris, Rob, Fan, Zhou, Feng, Hua, Fu, Shaoyu, Fynbo, Johan P. U., Galbany, Lluis, Jha, Saurabh W., Jiang, Shuaiqing, Kong, Albert, Kuulkers, Erik, Lei, Weihua, Li, Wenxiong, Liu, Bifang, Liu, Mingjun, Liu, Xing, Liu, Yuan, Liu, Zhu, Maitra, Chandreyee, Marino, Alessio, Monageng, Itumeleng, Nandra, Kirpal, Sanders, Jeremy, Soria, Roberto, Tao, Lian, Wang, Junfeng, Wang, Song, Wang, Tinggui, Wang, Zhongxiang, Wu, Qingwen, Wu, Xuefeng, Xu, Dong, Xu, Yanjun, Xue, Suijian, Xue, Yongquan, Zhang, Zijian, Zhu, Zipei, Zou, Hu, Bao, Congying, Chen, Fansheng, Chen, Houlei, Chen, Tianxiang, Chen, Wei, Chen, Yehai, Chen, Yifan, Cui, Chenzhou, Cui, Weiwei, Dai, Yanfeng, Fan, Dongwei, Guan, Ju, Han, Dawei, Hou, Dongjie, Hu, Haibo, Huang, Maohai, Huo, Jia, Jia, Zhenqing, Jiang, Bowen, Jin, Ge, Li, Chengkui, Li, Junfei, Li, Longhui, Li, Maoshun, Li, Wei, Li, Zhengda, Lian, Tianying, Liu, Congzhan, Liu, Heyang, Liu, Huaqiu, Lu, Fangjun, Luo, Laidan, Ma, Jia, Mao, Xuan, Pan, Haiwu, Pan, Xin, Song, Liming, Sun, Hui, Tan, Yunyin, Tang, Qingjun, Tao, Yihan, Wang, Hao, Wang, Juan, Wang, Lei, Wang, Wenxin, Wang, Yilong, Wang, Yusa, Wu, Qinyu, Xu, Haitao, Xu, Jingjing, Xu, Xinpeng, Xu, Yunfei, Xu, Zhao, Xue, Changbin, Xue, Yulong, Yan, Ailiang, Yang, Haonan, Yang, Xiongtao, Yang, Yanji, Zhang, Juan, Zhang, Mo, Zhang, Wenjie, Zhang, Zhen, Zhang, Ziliang, Zhao, Donghua, Zhao, Haisheng, Zhao, Xiaofan, Zhao, Zijian, Zhou, Hongyan, Zhou, Yilin, Zhu, Yuxuan, and Zhu, Zhencai
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Astrophysics - High Energy Astrophysical Phenomena - Abstract
We report the discovery of a peculiar X-ray transient, EP240408a, by Einstein Probe (EP) and follow-up studies made with EP, Swift, NICER, GROND, ATCA and other ground-based multi-wavelength telescopes. The new transient was first detected with Wide-field X-ray Telescope (WXT) on board EP on April 8th, 2024, manifested in an intense yet brief X-ray flare lasting for 12 seconds. The flare reached a peak flux of 3.9x10^(-9) erg/cm2/s in 0.5-4 keV, about 300 times brighter than the underlying X-ray emission detected throughout the observation. Rapid and more precise follow-up observations by EP/FXT, Swift and NICER confirmed the finding of this new transient. Its X-ray spectrum is non-thermal in 0.5-10 keV, with a power-law photon index varying within 1.8-2.5. The X-ray light curve shows a plateau lasting for about 4 days, followed by a steep decay till becoming undetectable about 10 days after the initial detection. Based on its temporal property and constraints from previous EP observations, an unusual timescale in the range of 7-23 days is found for EP240408a, which is intermediate between the commonly found fast and long-term transients. No counterparts have been found in optical and near-infrared, with the earliest observation at 17 hours after the initial X-ray detection, suggestive of intrinsically weak emission in these bands. We demonstrate that the remarkable properties of EP240408a are inconsistent with any of the transient types known so far, by comparison with, in particular, jetted tidal disruption events, gamma-ray bursts, X-ray binaries and fast blue optical transients. The nature of EP240408a thus remains an enigma. We suggest that EP240408a may represent a new type of transients with intermediate timescales of the order of about 10 days. The detection and follow-ups of more of such objects are essential for revealing their origin., Comment: 25 pages, 11 figures
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- 2024
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5. High proton conductivity through angstrom-porous titania
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Ji, Y., Hao, G. -P., Tan, Y. -T., Xiong, W. Q., Liu, Y., Zhou, W. Z., Tang, D. -M., Ma, R. Z., Yuan, S. J., Sasaki, T., Lozada-Hidalgo, M., Geim, A. K., and Sun, Pengzhan
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Condensed Matter - Materials Science ,Condensed Matter - Mesoscale and Nanoscale Physics ,Condensed Matter - Soft Condensed Matter - Abstract
Two dimensional (2D) crystals have attracted strong interest as a new class of proton conducting materials that can block atoms, molecules and ions while allowing proton transport through the atomically thin basal planes. Although 2D materials exhibit this perfect selectivity, the reported proton conductivities have been relatively low. Here we show that vacancy-rich titania monolayers are highly permeable to protons while remaining impermeable to helium with proton conductivity exceeding 100 S cm-2 at 200 C and surpassing targets set by industry roadmaps. The fast and selective proton transport is attributed to an extremely high density of titanium-atom vacancies (one per square nm), which effectively turns titania monolayers into angstrom-scale sieves. Our findings highlight the potential of 2D oxides as membrane materials for hydrogen-based technologies.
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- 2024
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6. Persistent flat band splitting and strong selective band renormalization in a kagome magnet thin film
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Ren, Zheng, Huang, Jianwei, Tan, Hengxin, Biswas, Ananya, Pulkkinen, Aki, Zhang, Yichen, Xie, Yaofeng, Yue, Ziqin, Chen, Lei, Xie, Fang, Allen, Kevin, Wu, Han, Ren, Qirui, Rajapitamahuni, Anil, Kundu, Asish, Vescovo, Elio, Kono, Junichiro, Morosan, Emilia, Dai, Pengcheng, Zhu, Jian-Xin, Si, Qimiao, Minár, Ján, Yan, Binghai, and Yi, Ming
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Condensed Matter - Mesoscale and Nanoscale Physics - Abstract
Magnetic kagome materials provide a fascinating playground for exploring the interplay of magnetism, correlation and topology. Many magnetic kagome systems have been reported including the binary FemXn (X=Sn, Ge; m:n = 3:1, 3:2, 1:1) family and the rare earth RMn6Sn6 (R = rare earth) family, where their kagome flat bands are calculated to be near the Fermi level in the paramagnetic phase. While partially filling a kagome flat band is predicted to give rise to a Stoner-type ferromagnetism, experimental visualization of the magnetic splitting across the ordering temperature has not been reported for any of these systems due to the high ordering temperatures, hence leaving the nature of magnetism in kagome magnets an open question. Here, we probe the electronic structure with angle-resolved photoemission spectroscopy in a kagome magnet thin film FeSn synthesized using molecular beam epitaxy. We identify the exchange-split kagome flat bands, whose splitting persists above the magnetic ordering temperature, indicative of a local moment picture. Such local moments in the presence of the topological flat band are consistent with the compact molecular orbitals predicted in theory. We further observe a large spin-orbital selective band renormalization in the Fe d_xy+d_(x^2-y^2 ) spin majority channel reminiscent of the orbital selective correlation effects in the iron-based superconductors. Our discovery of the coexistence of local moments with topological flat bands in a kagome system echoes similar findings in magic-angle twisted bilayer graphene, and provides a basis for theoretical effort towards modeling correlation effects in magnetic flat band systems.
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- 2024
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7. Outbursts Upon Cooling of Low-Temperature Binary Mixtures: Experiments and Their Planetary Implications
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Raposa, S. M., Engle, A. E., Tan, S. P., Grundy, W. M., Hanley, J., Lindberg, G. E., Umurhan, O. M., Steckloff, J. K., Thieberger, C. L., and Tegler, S. C.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
For many binary mixtures, the three-phase solid-liquid-vapor equilibrium curve has intermediate pressures that are higher than the pressure at the two pure triple points. This curve shape results in a negative slope in the high-temperature region near the triple point of the less volatile component. When freezing mixtures in the negative slope regime, fluid trapped below confined ice has latent heat released with more vapor upon cooling, and thus increases in pressure. If the rising pressure of the confined fluid overcomes the strength of the confining solid, which may be its own ice, it can produce an abrupt outburst of material and an increase in the system's overall pressure. Here, we report experimental results of freezing-induced outbursts occurring in the N2/CH4, CO/CH4, and N2/C2H6 systems, and provide insight into the phenomenon through a thermodynamics perspective. We also propose other binary systems that may experience outbursts and explore the geological implications for icy worlds like Titan, Triton, Pluto and Eris, as well as rocky bodies, specifically Earth and Mars., Comment: 30 pages, 8 figures
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- 2024
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8. Closing the Talent Gap: A Proposed Micro-Credential Model in Malaysian Formal Education
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Koon Tatt Tan, Josephine Ie Lyn Chan, Prakash V. Arumugam, and Heng Wei Lee
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The global talent gap is a consequence of skills mismatch among job seekers. Although micro-credentials appeared to be a potential solution to narrow the talent gap, it is unclear how they can be effectively implemented in a structured academic pathway. The purpose of this study is to explore the potential of a proposed micro-credential model for formal education via the Accreditation of Prior Experiential Learning Micro-credentials (APEL.M), to support the talent gap challenges faced by companies in Malaysia. The study used a qualitative case study method with data collected mainly from a focus group discussion among relevant faculty heads, administrators, and senior management team members. The findings indicated that despite potential challenges and issues towards implementing the new micro-credential model, the proposed model is significant for policymakers, higher education providers, and industry stakeholders interested in addressing the talent gap and creating alternative pathways to formal academic qualifications.
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- 2024
9. Exploring the Potential of ChatGPT in Facilitating Consciousness-Raising Tasks: A Promising Solution for Alleviating the Burden on Educators
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Tan Thanh Tran
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When studying grammar, students must not only focus on its structure but also on its form. Form-focused activities are integral to this process, requiring students to identify and manipulate language forms. A well-established technique for facilitating language acquisition is the consciousness-raising task (CR), which aims to heighten learners' awareness of language form. By prioritizing the language input, students can cultivate a more precise comprehension of grammar structures, thereby enhancing their own language proficiency. This approach entails various strategies, such as inferring grammatical rules from examples, comparing different forms of expression, and examining differences between a learner's usage of a grammar item and that of native speakers. However, designing effective CR tasks is cognitively demanding, time-intensive, and laborious for teachers, as it entails accommodating numerous requirements, including the definition of clear objectives, task relevance, and task engagement. To address these challenges, it is worth utilizing ChatGPT which is an advanced conversational AI system with the capability to process and generate various modalities of language. It has access to extensive databases and can produce written content that is frequently indistinguishable from human-written text. Accordingly, ChatGPT can be utilized to generate CR tasks or materials that may be applied in class. The present study endeavors to offer a range of CR tasks for grammar teaching that have been generated by ChatGPT. The tasks include identification tasks, text correction tasks, word choice tasks, and others.
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- 2024
10. Frequentist and Bayesian Factorial Invariance Using R
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Teck Kiang Tan
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The procedures of carrying out factorial invariance to validate a construct were well developed to ensure the reliability of the construct that can be used across groups for comparison and analysis, yet mainly restricted to the frequentist approach. This motivates an update to incorporate the growing Bayesian approach for carrying out the Bayesian factorial invariance, as well as the frequentist approach, using the recent add-on R packages to show the procedures systematically for testing measurement equivalence via multigroup confirmatory factor analysis. The practical procedure and guidelines for carrying out factorial invariance under MCFA using a classic empirical example are demonstrated. Comparison between the frequentist and the Bayesian procedures and demonstration using priors are another two nuclei of the paper.
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- 2024
11. Exploring the Relationship between Teacher Motivation and Teacher Burnout among Chinese College English Teachers
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Juan Tan and Shinhye Kim
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Teaching is often regarded as a profession with a high probability of job burnout. Research has shown a close relationship between teachers' motivation and their burnout, but it has not been closely explored among EFL (English as a foreign language) teachers in Chinese contexts. Considering the large number of college English teachers in Chinese universities and recent changes in their role, the study explores the relationship between their motivation and burnout, as well as the factors that affect teacher burnout among Chinese college English teachers. For this purpose, a total of 261 college English teachers from ten Chinese universities participated in the survey. Among them, 68 teachers submitted their narratives on teacher burnout using the narrative frame. The results showed that high mastery and relational goals and a low level of work avoidance goals contributed to higher motivation and less teacher burnout. The demand for research, lack of autonomy, and guanxi-based practices influenced Chinese teachers' burnout. The results show that teacher burnout is highly context-dependent and affected by the organizational structure and cultural practices. An organizational support needs to be provided for teachers to maintain their mastery goal orientations and increase their autonomy as professional teachers.
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- 2024
12. Future-Readiness and Islamic Education: Perspectives from Singapore
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Charlene Tan and Puti N. Binte Hasman
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This article explores the relation between future-readiness and Islamic education from the perspectives of Islamic learning centers in Singapore. The main research objective is to examine how the concept of future-readiness and related terms are interpreted, framed, and facilitated in Islamic textbooks. Based on a content analysis of the textbooks used at Islamic learning centers for primary students in Singapore, two research findings are reported. First, the Islamic textbooks interpret future-readiness as equipping Muslim learners with Islamic knowledge and values as well as application and learner-centeredness in the modern world. Second, the Islamic textbooks promote information and communications technology (ICT) as part of preparing students for future-readiness. A major implication from this study is that Islamic curricula evolve in tandem with changing times to support the development of future-ready students. In addition, the advancement of future-readiness is situated within an Islamic worldview that emphasizes religious beliefs and values. A significant limitation of this study is that its research method centered on an analysis of textbooks; hence, empirical research is recommended to corroborate the research findings and implications.
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- 2024
13. The Impact of Emerging Technology in Physics over the Past Three Decades
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Binar Kurnia Prahani, Hanandita Veda Saphira, Budi Jatmiko, Suryanti, and Tan Amelia
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As humanity reaches the 5.0 industrial revolution, education plays a critical role in boosting the quality of human resources. This paper reports bibliometric research on emerging TiP during 1993-2022 in the educational field to analyse its development on any level of education during the last three decades. This study employed a Scopus database. The findings are that the trend of TiP publication in educational fields has tended to increase every year during the past three decades and conference paper became the most published document type, the USA is the country which produces the most publications; "Students" being the most occurrences keyword and total link strength. The publication of the TiP is ranked to the Quartile 1, which implies that a publication with the cited performance is a publication with credibility because the publisher has a good reputation. Researchers can find the topics most relevant to other metadata sources such as Web of Science, Publish, and Perish.
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- 2024
14. What Do We Know about Metaverse? Insights for Future Studies Based on Bibliometric Analysis
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Aslihan Istanbullu, Murat Topal, and Sabri Sekan Tan
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Metaverse is a technology which allow users to "experience" a digital universe and includes several components like augmented and virtual reality. Researchers who wish to research the field may not know where to start or the key features of the field. Thus, the present study aims to discuss the general and social, conceptual, and intellectual structures of the field for future researchers on metaverse. For this purpose, the general structure, scientific maps, and socio-intellectual structure of the field were investigated. Then, recommendations are presented for future researchers by bibliometric analysis results. In the study, the abstracts and keywords in publications indexed in the Scopus database and Web of Science database were reviewed. After the data collected from 439 publications were cleaned and combined, 328 documents were analyzed using R. The performance analysis revealed that the most productive writer in the field was Ayiter E., the most influential writer was Bourlakis M., the journal with the most publications was "The Journal of the Association for Information Systems", and the most cited study was "Avatars, People, and Virtual Worlds: Foundations for Research in Metaverses" published in that journal. The examination of the intellectual, social and conceptual framework within the field unveiled predominant associations of metaverse with keywords such as virtual, second life, augmented reality, avatar, virtual world, and virtual reality. The most frequent collaborations were between Korea, Japan and the United States on second life and e-learning.
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- 2024
15. Facilitating Learners' Self-Assessment during Formative Writing Tasks Using Writing Analytics Toolkit
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Luzhen Tang, Kejie Shen, Huixiao Le, Yuan Shen, Shufang Tan, Yueying Zhao, Torsten Juelich, Xinyu Li, Dragan Gaševic, and Yizhou Fan
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Background: Learners' writing skills are critical to their academic and professional development. Previous studies have shown that learners' self-assessment during writing is essential for assessing their writing products and monitoring their writing processes. However, conducting practical self-assessments of writing remains challenging for learners without help, such as formative feedback. Objectives: To facilitate learners' self-assessment in writing, we developed a writing analytics toolkit and used data visualisation and cutting-edge machine learning technology that provides real-time and formative feedback to learners. Methods: To investigate whether our newly-developed tool affects the accuracy and process of learners' self-assessment, we conducted a lab study. We assigned 59 learners to complete writing (2 h) and revising (1 h) tasks. During the revision stage, we randomly assigned the learners to two groups: one group used the writing analytics toolkit while the second group was not granted access to the toolkit. Learners' self-assessment accuracy and process of self-assessment were compared between the two groups. Results: In our study, we found the toolkit helped learners in the experimental group improve the self-assessment accuracy of their writing products compared to the learners in the control group. In addition, we also found that the affordances of the toolkit affected the learners' self-assessment process, and poor design affordances may have prevented the learners from reflecting by themselves. Conclusions: Together, our empirical study shed light on the design of future writing analytics tools which aim at improving learners' self-assessment during formative writing processes.
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- 2024
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16. Exploring Students' Computer-Supported Collaborative Argumentation with Socio-Scientific Issues
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Wenli Chen, Yiting Han, Jesmine Tan, Aileen Siew Cheng Chai, Qianru Lyu, and Lyna
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Background: This study examined the effect of computer-supported collaborative argumentation (CSCA) on secondary school students' understanding of socio-scientific issues (SSI). Engaging students in collaborative argumentation is known to help with deepening their understanding of SSI. Methods: In this study, a mixed-method design is used to investigate 84 students' collaborative argumentation processes and outcomes. The statistical analysis, epistemic network analysis and qualitative uptake analysis results showed that CSCA was effective in supporting secondary school students' evidence-based argumentation skills on SSI. Findings and Conclusion: Several cases were presented to show how students engaged in CSCA to explore meaningful learning opportunities and how CSCA helped students' learning on SSI. Implications: The findings provided insights for future innovative teaching and learning SSI in authentic classroom settings.
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- 2024
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17. Reclassification and Multilingual Learners' Science Achievement
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Mark B. Pacheco, F. Chris Curran, Lelydeyvis Boza, Amber W. Deig, Katharine T. Harris, and Tiffany S. Tan
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This study contributes to a growing body of scholarship at the intersection of bilingual education and education policy and examines reclassification, or the transition out of formal English language services in schools, as one potential lever in accelerating or decelerating multilingual learners' science learning. More specifically, it traces multilingual learners' science academic achievement vis-à-vis science test scores over a six-year period using the nationally-representative Early Childhood Longitudinal Study of 2010-11 (ECLS-K:2011) data set. We use regression analyses with panel data to explore the relationship of reclassification with MLs' science achievement at a national scale, and then, how variation in contextual factors (including family, school, and individual characteristics) shapes this relationship. Results show that, after controlling for covariates and prior test scores, reclassification is not significantly associated with differential science test scores when compared to students that retain their EL status. Results further show that reclassification is associated with higher science achievement for MLs who were previously in a dual-language program but lower scores for those with higher prior achievement. We conclude with implications for the reclassification process, as well as directions for future research on reclassification, multilingual learners, and academic achievement.
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- 2024
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18. Ostracism, School Engagement, and Academic Achievement: Examining a Mediation Model among Senior High School Students
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Lin Wang, Shan Jiang, Shilin Tan, Yangyang Wan, and Wanyan Fei
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Ostracism and school engagement have important implications for adolescents' academic perseverance and success. However, limited previous studies have investigated the mediating effects of school engagement on the association between ostracism and academic achievement in the Chinese cultural context. The present study fills in this research gap by examining the mediating effects of emotional engagement, cognitive engagement, and behavioral engagement on the association between ostracism and adolescents' academic achievement. Clustered random sampling was employed, and a total of 728 adolescents (52.6% female) were recruited as participants. The results showed that ostracism was negatively associated with academic achievement. Ostracism was negatively associated with emotional engagement and cognitive engagement, which in turn were related to worse academic achievement. Notably, within the Chinese cultural context, behavioral engagement did not exhibit a mediating effect between ostracism and academic achievement. The findings of the present research have theoretical and practical implications for curtailing ostracism and improving adolescents' academic achievement.
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- 2024
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19. Positive Education, Aristotelian Eudaimonia, and Adolescent Notions of the 'Good' Life
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Kylie Trask-Kerr, Tan-Chyuan Chin, and Dianne A. Vella-Brodrick
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The educational approach known as positive education emerged from positive psychology and frequently attributes its conception of flourishing to Aristotelian eudaimonia. This is a point of contention between scholars who see positive psychology's flourishing as an epithet of Aristotelian virtues and others who have identified critical divergences between the philosophical foundations of positive psychology and Aristotle's normative ethics. Few scholars have examined whether adolescent understandings of flourishing reflect Aristotelian eudaimonia, and whether this is different in positive education students. This paper explores notion of the good life through the writings of 226 adolescents, 93 of whom attend a school that has implemented positive education. These are analysed through an Aristotelian lens, finding more similarities than differences between the groups. Both groups discussed relationships, emotions, and accomplishments, but moral goodness and virtue were not prominent. Conclusions are drawn about the implications of this for 'positive' education and the role it plays in nurturing flourishing.
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- 2024
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20. Multilingual Learners' Exposure to Science and Language Inputs in Elementary School: ¿Qué Sabemos?
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Lelydeyvis Boza, F. Chris Curran, Katharine Harris-Walls, Tiffany S. Tan, Amber Deig, and Mark B. Pacheco
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As linguistic diversity continues to increase in the United States public school system, schools are expected to meet the needs of their ever-changing student body. While much attention within education research has understandably focused on multilingual learners' (MLs) English language acquisition, an emergent body of work points to science as an important subject for attention among elementary MLs. We suggest that understanding what "science and language inputs" are afforded to MLs in schools can contribute to understanding the needs and opportunities for enhancing MLs' science learning. This study leveraged nationally representative data from the Early Childhood Longitudinal Study of 2010-2011 to explore the science and language inputs available to MLs in elementary school. Using descriptive statistics, our analysis of science and language inputs provides evidence on what MLs have, or do not have, access to inside of their schools. Science inputs appear to be relatively evenly distributed across classrooms serving non-MLs, MLs, and subgroups therein. In comparison, language inputs are differentially distributed across ML subgroups, but they are distributed in ways that may align with student needs. However, while the science inputs do not necessarily vary across subgroups, the language inputs do, and this may affect how students can engage with science inputs. In understanding what science and language inputs MLs are afforded, this study provides a foundation for how to improve formal learning environments for them, especially regarding science learning.
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- 2024
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21. Data Sharing Policies across Health Research Globally: Cross-Sectional Meta-Research Study
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Aidan C. Tan, Angela C. Webster, Sol Libesman, Zijing Yang, Rani R. Chand, Weber Liu, Talia Palacios, Kylie E. Hunter, and Anna Lene Seidler
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Background: Data sharing improves the value, synthesis, and integrity of research, but rates are low. Data sharing might be improved if data sharing policies were prominent and actionable at every stage of research. We aimed to systematically describe the epidemiology of data sharing policies across the health research lifecycle. Methods: This was a cross-sectional analysis of the data sharing policies of the largest health research funders, all national ethics committees, all clinical trial registries, the highest-impact medical journals, and all medical research data repositories. Stakeholders' official websites, online reports, and other records were reviewed up to May 2022. The strength and characteristics of their data sharing policies were assessed, including their policies on data sharing intention statements (a.k.a. data accessibility statements) and on data sharing specifically for coronavirus disease studies. Data were manually extracted in duplicate, and policies were descriptively analysed by their stakeholder and characteristics. Results: Nine hundred and thirty-five eligible stakeholders were identified: 110 funders, 124 ethics committees, 18 trial registries, 273 journals, and 410 data repositories. Data sharing was required by 41% (45/110) of funders, no ethics committees or trial registries, 19% (52/273) of journals and 6% (24/410) of data repositories. Among funder types, a higher proportion of private (63%, 35/55) and philanthropic (67%, 4/6) funders required data sharing than public funders (12%, 6/49). Conclusion: Data sharing requirements, and even recommendations, were insufficient across health research. Where data sharing was required or recommended, there was limited guidance on implementation. We describe multiple pathways to improve the implementation of data sharing. Public funders and ethics committees are two stakeholders with particularly important untapped opportunities.
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- 2024
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22. For What and for Whom? Expanding the Role of Research Syntheses for Diverse Stakeholders
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Rita Elaine Silver, Vinay Kumar, Deborah Chua Fengyi, Michael Tan Lip Thye, and Johannis Auri Bin Abdul Aziz
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Systematic reviews have witnessed significant growth across many fields, including education. In this article, we outline the background of this growth, highlight the tendency to focus on methodological considerations, and propose a framework to support education researchers in preparing systematic reviews with broad impact. We draw on our experience working with education stakeholders in Singapore and on international scholarship to propose a framework that supports education researchers in clarifying and specifying their aims and audiences and crafting syntheses of appropriate types. Our aim is that this framework, which includes examples illustrating four categories of reviews, acts as a reflective tool which researchers can use to maximize the utility, value, and potential impact of education research.
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- 2024
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23. What Is the Best Predictor of Word Difficulty? A Case of Data Mining Using Random Forest
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Hung Tan Ha, Duyen Thi Bich Nguyen, and Tim Stoeckel
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Word frequency has a long history of being considered the most important predictor of word difficulty and has served as a guideline for several aspects of second language vocabulary teaching, learning, and assessment. However, recent empirical research has challenged the supremacy of frequency as a predictor of word difficulty. Accordingly, applied linguists have questioned the use of frequency as the principal criterion in the development of wordlists and vocabulary tests. Despite being informative, previous studies on the topic have been limited in the way the researchers measured word difficulty and the statistical techniques they employed for exploratory data analysis. In the current study, meaning recall was used as a measure of word difficulty, and random forest was employed to examine the importance of various lexical sophistication metrics in predicting word difficulty. The results showed that frequency was not the most important predictor of word difficulty. Due to the limited scope, research findings are only generalizable to Vietnamese learners of English.
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- 2024
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24. Documenting the Distribution of Instructional Coaching Programs
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Christopher Redding, Tiffany S. Tan, and Seth B. Hunter
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We present data from the Schools and Staffing Survey and the National Teacher and Principal Survey to document the prevalence of instructional coaching programs (ICPs) and consider how ICPs are distributed by school level, urbanicity, new teachers in a school, student enrollment, school poverty levels, student achievement levels, and state. We show that ICPs are most common in elementary schools, schools located in cities, schools with larger proportions of new teachers, larger schools, schools enrolling larger fractions of economically disadvantaged students, and schools with lower student achievement levels. Additionally, more affluent and higher achieving schools experienced the sharpest increase in ICPs over time.
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- 2024
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25. Adaptive Skills of Individuals with Angelman Syndrome Assessed Using the Vineland Adaptive Behavior Scales, 2nd Edition
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Angela Gwaltney, Sarah Nelson Potter, Sarika U. Peters, Rene L. Barbieri-Welge, Lucia T. Horowitz, Lisa M. Noll, Rachel J. Hundley, Lynne M. Bird, Wen-Hann Tan, Anjali Sadhwani, and Anne Wheeler
- Abstract
In the current study, we examined adaptive skills and trajectories over time in 257 individuals with Angelman syndrome (AS) using the Vineland Adaptive Behavior Scales, 2nd Edition. Multilevel linear models were used to examine differences between molecular subtypes over time, from one year to 13 years of age, in the adaptive domains of communication, daily living skills, socialization and motor skills. Individuals with non-deletion subtypes typically demonstrated a higher level of adaptive skills compared to those with deletion subtypes. Statistically significant growth was observed in all adaptive domains through at least early adolescence. Individuals with AS should continue to receive developmental services and educational supports through adolescence and into adulthood given the slow rates of growth being observed across adaptive domains.
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- 2024
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26. Sample Size Calculation and Optimal Design for Multivariate Regression-Based Norming
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Francesco Innocenti, Math J. J. M. Candel, Frans E. S. Tan, and Gerard J. P. van Breukelen
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Normative studies are needed to obtain norms for comparing individuals with the reference population on relevant clinical or educational measures. Norms can be obtained in an efficient way by regressing the test score on relevant predictors, such as age and sex. When several measures are normed with the same sample, a multivariate regression-based approach must be adopted for at least two reasons: (1) to take into account the correlations between the measures of the same subject, in order to test certain scientific hypotheses and to reduce misclassification of subjects in clinical practice, and (2) to reduce the number of significance tests involved in selecting predictors for the purpose of norming, thus preventing the inflation of the type I error rate. A new multivariate regression-based approach is proposed that combines all measures for an individual through the Mahalanobis distance, thus providing an indicator of the individual's overall performance. Furthermore, optimal designs for the normative study are derived under five multivariate polynomial regression models, assuming multivariate normality and homoscedasticity of the residuals, and efficient robust designs are presented in case of uncertainty about the correct model for the analysis of the normative sample. Sample size calculation formulas are provided for the new Mahalanobis distance-based approach. The results are illustrated with data from the Maastricht Aging Study (MAAS).
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- 2024
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27. Reflections on the Teacher Education Model for the Twenty-First Century (TE21) and V3SK: Legacy and Lessons
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Oon Seng Tan and Jallene Jia En Chua
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This article will reflect on the first author's deanship journey from 2008 to 2014, which saw the mobilization of the NIE Teacher Education Model for the 21st Century (TE[superscript 21]) and conceptualization of the V[superscript 3]SK framework for teacher education curriculum. Taking a big picture approach, the model and framework were architecturally derived through our building block and improvement systems approach where strong foundations were critical. The period of the late 2000s through the next decade saw an increased interest in education reforms worldwide. Two major trends saw a confluence in interest in Singapore. Firstly, there was increased research pointing to the importance of the teacher factor. Secondly, enhanced interest in the Programme for International Student Assessment (PISA) and international comparisons placed Singapore under global spotlight owing to her remarkable performance. Singapore drew much attention from education ministries around the world, which were visiting Singapore to learn how we invest in education and more importantly what we do to bring ideas to fruition. It became clear that the teacher factor was a significant reason for Singapore's success. This article will share on how TE[superscript 21] was a scholarly and pragmatic endeavour resulting from research-informed and motivated teacher educators working with partners and stakeholders in practice whilst taking a globalized perspective. The pinnacle of the TE[superscript 21] model was the V[superscript 3]SK framework which continues to permeate theory and practice. The framework has gone beyond a professional guidepost to capturing the importance of the teacher symbol. In essence, we were building on roots, culture, values, and wisdom as we tapped on science and evidence.
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- 2024
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28. Contributions of Positive Psychology to Higher Education across Asia: A Scoping Review and Unifying Thematic Framework
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Deborah A. Hall, Jesika Juliana, Mageswary Manickam, Anil Singh Toor Sunil Singh, Sylvia Tan Sze Wei, Phuong Anh Vuong, Feifei Wu, and Amira Firdaus
- Abstract
Positive psychology offers a scientific window onto understanding and enhancing the welfare and growth of university communities, and as well as improving academic performance. This holistic approach is on the rise, yet most research is conducted in Western countries. This situation prevails despite the fact that two-thirds of the world's population live in Asia. This review collated and synthesised published work on applications of positive psychology in higher education conducted in Asia, to describe the current status, explore conceptual perspectives and identify knowledge gaps. A total of 147 articles (157 experimental studies), published since 2000, were included. These were descriptive explorations (12.1%), quantifying associations between positive psychology constructs (62.4%), interventions (19.7%), and psychometric evaluations (5.7%). Key topics were academic leadership, organisational commitment, student engagement and foreign language learning. The thematic framework centered on 'Optimal Functioning', with 'Personal Resources One Can Draw On' and 'How One Interacts With The World' as direct influencing factors, and 'Environment' as an indirect factor. Across the Asian region, positive psychology's major contribution is to identify what types of personal resources are associated with optimal functioning in higher education, but there is little high-quality evidence for intervention benefits, nor a deep understanding of how those resources can be effectively deployed to achieve well-being. As part of the third-wave positive psychology movement, scholars in Asia can play a greater leading role in re-evaluating traditional Western concepts to account for the socio-cultural context in which students and staff are embedded.
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- 2024
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29. Low-Progress Math in a High-Performing System: The Role of Math Anxiety in Singapore's Elementary Learners
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Azilawati Jamaludin, Ahmad Ishqi Jabir, Fengjuan Wang, and Aik Lim Tan
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Math anxiety negatively relates to math performance. This negative relationship may be exacerbated in low-progress math learners. However, there are limited studies on math anxiety among low-progress learners in a paradoxically high-performing education system like Singapore. To fill this research gap, this research analyzed the anxiety profiles of 151 students who were in the math learning support intervention program administered by the Ministry of Education, Singapore (MOE). We examined the complex relationship centered in math anxiety with relevant variables such as demographic characteristics, working memory, and math performance. The results indicated that (1) math anxiety only vary significantly between children with very low Early Numeracy Indicator (ENI) and high ENI levels; (2) a negative relationship between math anxiety and math performance exists; (3) there was no significant interaction between math anxiety and working memory; (4) a further examination on moderating effect found that only children who have been identified as being at risk for developmental dyscalculia and those with average or high working memory performed poorer in math at higher levels of math anxiety. Limitations and future directions are discussed.
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- 2024
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30. Perspectives From Across the Pacific Ocean : How China Views the 2024 U.S. Presidential Election
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Yiwei, Wang and Yannan, Tan
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- 2024
31. TOI-5005 b: A super-Neptune in the savanna near the ridge
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Castro-González, A., Lillo-Box, J., Armstrong, D. J., Acuña, L., Aguichine, A., Bourrier, V., Gandhi, S., Sousa, S. G., Delgado-Mena, E., Moya, A., Adibekyan, V., Correia, A. C. M., Barrado, D., Damasso, M., Winn, J. N., Santos, N. C., Barkaoui, K., Barros, S. C. C., Benkhaldoun, Z., Bouchy, F., Briceño, C., Caldwell, D. A., Collins, K. A., Essack, Z., Ghachoui, M., Gillon, M., Hounsell, R., Jehin, E., Jenkins, J. M., Keniger, M. A. F., Law, N., Mann, A. W., Nielsen, L. D., Pozuelos, F. J., Schanche, N., Seager, S., Tan, T. -G., Timmermans, M., Villaseñor, J., Watkins, C. N., and Ziegler, C.
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Astrophysics - Earth and Planetary Astrophysics - Abstract
The Neptunian desert and savanna have been recently found to be separated by a ridge, an overdensity of planets in the $\simeq$3-5 days period range. These features are thought to be shaped by dynamical and atmospheric processes. However, their relative roles are not yet well understood. We intend to confirm and characterise the super-Neptune TESS candidate TOI-5005.01, which orbits a moderately bright (V = 11.8) solar-type star (G2 V) with an orbital period of 6.3 days. We confirm TOI-5005 b to be a transiting super-Neptune with a radius of $R_{\rm p}$ = $6.25\pm 0.24$ $\rm R_{\rm \oplus}$ ($R_{\rm p}$ = $0.558\pm 0.021$ $\rm R_{\rm J}$) and a mass of $M_{\rm p}$ = $32.7\pm 5.9$ $\rm M_{\oplus}$ ($M_{\rm p}$ = $0.103\pm 0.018$ $\rm M_{\rm J}$), which corresponds to a mean density of $\rho_{\rm p}$ = $0.74 \pm 0.16$ $\rm g \, cm^{-3}$. Our internal structure modelling indicates that the overall metal mass fraction is well constrained to a value slightly lower than that of Neptune and Uranus ($Z_{\rm planet}$ = $0.76^{+0.04}_{-0.11}$). We also estimated the present-day atmospheric mass-loss rate of TOI-5005 b but found contrasting predictions depending on the choice of photoevaporation model. At a population level, we find statistical evidence ($p$-value = $0.0092^{+0.0184}_{-0.0066}$) that planets in the savanna such as TOI-5005 b tend to show lower densities than planets in the ridge, with a dividing line around 1 $\rm g \, cm^{-3}$, which supports the hypothesis of different evolutionary pathways populating both regimes. TOI-5005 b is located in a key region of the period-radius space to study the transition between the Neptunian ridge and the savanna. It orbits the brightest star of all such planets, which makes it a target of interest for atmospheric and orbital architecture observations that will bring a clearer picture of its overall evolution., Comment: Accepted for publication in A&A. Abstract shortened. 35 pages, 26 figures
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- 2024
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32. A novel pedestrian road crossing simulator for dynamic traffic light scheduling systems
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Tan, Dayuan, Younis, Mohamed, Lalouani, Wassila, Fan, Shuyao, and Song, Guozhi
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Electrical Engineering and Systems Science - Systems and Control - Abstract
The major advances in intelligent transportation systems are pushing societal services toward autonomy where road management is to be more agile in order to cope with changes and continue to yield optimal performance. However, the pedestrian experience is not sufficiently considered. Particularly, signalized intersections are expected to be popular if not dominant in urban settings where pedestrian density is high. This paper presents the design of a novel environment for simulating human motion on signalized crosswalks at a fine-grained level. Such a simulation not only captures typical behavior, but also handles cases where large pedestrian groups cross from both directions. The proposed simulator is instrumental for optimized road configuration management where the pedestrians' quality of experience, for example, waiting time, is factored in. The validation results using field data show that an accuracy of 98.37 percent can be obtained for the estimated crossing time. Other results using synthetic data show that our simulator enables optimized traffic light scheduling that diminishes pedestrians' waiting time without sacrificing vehicular throughput.
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- 2024
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33. The inflated, eccentric warm Jupiter TOI-4914 b orbiting a metal-poor star, and the hot Jupiters TOI-2714 b and TOI-2981 b
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Mantovan, G., Wilson, T. G., Borsato, L., Zingales, T., Biazzo, K., Nardiello, D., Malavolta, L., Desidera, S., Marzari, F., Cameron, A. Collier, Nascimbeni, V., Majidi, F. Z., Montalto, M., Piotto, G., Stassun, K. G., Winn, J. N., Jenkins, J. M., Mignon, L., Bieryla, A., Latham, D. W., Barkaoui, K., Collins, K. A., Evans, P., Fausnaugh, M. M., Granata, V., Kostov, V., Mann, A. W., Pozuelos, F. J., Radford, D. J., Relles, H. M., Rowden, P., Seager, S., Tan, T. -G., Timmermans, M., and Watkins, C. N.
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Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Solar and Stellar Astrophysics - Abstract
Recent observations of giant planets have revealed unexpected bulk densities. Hot Jupiters, in particular, appear larger than expected for their masses compared to planetary evolution models, while warm Jupiters seem denser than expected. These differences are often attributed to the influence of the stellar incident flux, but could they also result from different planet formation processes? Is there a trend linking the planetary density to the chemical composition of the host star? In this work we present the confirmation of three giant planets in orbit around solar analogue stars. TOI-2714 b ($P \simeq 2.5$ d, $R_{\rm p} \simeq 1.22 R_{\rm J}$, $M_{\rm p} = 0.72 M_{\rm J}$) and TOI-2981 b ($P \simeq 3.6$ d, $R_{\rm p} \simeq 1.2 R_{\rm J}$, $M_{\rm p} = 2 M_{\rm J}$) are hot Jupiters on nearly circular orbits, while TOI-4914 b ($P \simeq 10.6$ d, $R_{\rm p} \simeq 1.15 R_{\rm J}$, $M_{\rm p} = 0.72 M_{\rm J}$) is a warm Jupiter with a significant eccentricity ($e = 0.41 \pm 0.02$) that orbits a star more metal-poor ([Fe/H]$~= -0.13$) than most of the stars known to host giant planets. Our radial velocity (RV) follow-up with the HARPS spectrograph allows us to detect their Keplerian signals at high significance (7, 30, and 23$\sigma$, respectively) and to place a strong constraint on the eccentricity of TOI-4914 b (18$\sigma$). TOI-4914 b, with its large radius and low insolation flux ($F_\star < 2 \times 10^8~{\rm erg~s^{-1}~cm^{-2}}$), appears to be more inflated than what is supported by current theoretical models for giant planets. Moreover, it does not conform to the previously noted trend that warm giant planets orbiting metal-poor stars have low eccentricities. This study thus provides insights into the diverse orbital characteristics and formation processes of giant exoplanets, in particular the role of stellar metallicity in the evolution of planetary systems., Comment: Accepted for publication in Astronomy & Astrophysics. 21 pages, 26 figures, and 8 tables. Abstract abridged
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- 2024
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34. Beyond Preferences in AI Alignment
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Zhi-Xuan, Tan, Carroll, Micah, Franklin, Matija, and Ashton, Hal
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Computer Science - Artificial Intelligence - Abstract
The dominant practice of AI alignment assumes (1) that preferences are an adequate representation of human values, (2) that human rationality can be understood in terms of maximizing the satisfaction of preferences, and (3) that AI systems should be aligned with the preferences of one or more humans to ensure that they behave safely and in accordance with our values. Whether implicitly followed or explicitly endorsed, these commitments constitute what we term a preferentist approach to AI alignment. In this paper, we characterize and challenge the preferentist approach, describing conceptual and technical alternatives that are ripe for further research. We first survey the limits of rational choice theory as a descriptive model, explaining how preferences fail to capture the thick semantic content of human values, and how utility representations neglect the possible incommensurability of those values. We then critique the normativity of expected utility theory (EUT) for humans and AI, drawing upon arguments showing how rational agents need not comply with EUT, while highlighting how EUT is silent on which preferences are normatively acceptable. Finally, we argue that these limitations motivate a reframing of the targets of AI alignment: Instead of alignment with the preferences of a human user, developer, or humanity-writ-large, AI systems should be aligned with normative standards appropriate to their social roles, such as the role of a general-purpose assistant. Furthermore, these standards should be negotiated and agreed upon by all relevant stakeholders. On this alternative conception of alignment, a multiplicity of AI systems will be able to serve diverse ends, aligned with normative standards that promote mutual benefit and limit harm despite our plural and divergent values., Comment: 26 pages (excl. references), 5 figures
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- 2024
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35. Global weather map reveals persistent top-of-atmosphere features on the nearest brown dwarfs
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Chen, Xueqing, Biller, Beth A., Vos, Johanna M., Crossfield, Ian J. M., Mace, Gregory N., Hood, Callie E., Tan, Xianyu, Allers, Katelyn N., Martin, Emily C., Bubb, Emma, Fortney, Jonathan J., Morley, Caroline V., and Hammond, Mark
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Astrophysics - Earth and Planetary Astrophysics ,Astrophysics - Solar and Stellar Astrophysics - Abstract
Brown dwarfs and planetary-mass companions display rotationally modulated photometric variability, especially those near the L/T transition. This variability is commonly attributed to top-of-atmosphere (TOA) inhomogeneities, with proposed models including patchy thick and thin clouds, planetary-scale jets, or chemical disequilibrium. Surface mapping techniques are powerful tools to probe their atmospheric structures and distinguish between models. One of the most successful methods for stellar surface mapping is Doppler imaging, where the existence of TOA inhomogeneities can be inferred from their varying Doppler shifts across the face of a rotating star. We applied Doppler imaging to the nearest brown dwarf binary WISE 1049AB (aka Luhman 16AB) using time-resolved, high-resolution spectroscopic observations from Gemini IGRINS, and obtained for the first time H and K band simultaneous global weather map for brown dwarfs. Compared to the only previous Doppler map for a brown dwarf in 2014 featuring a predominant mid-latitude cold spot on WISE 1049B and no feature on WISE 1049A, our observations detected persistent spot-like structures on WISE 1049B in the equatorial to mid-latitude regions on two nights, and revealed new polar spots on WISE 1049A. Our results suggest stability of atmospheric features over timescale of days and possible long-term stable or recurring structures. H and K band maps displayed similar structures in and out of CO bands, indicating the cold spots not solely due to chemical hotspots but must involve clouds. Upcoming 30-m extremely large telescopes (ELTs) will enable more sensitive Doppler imaging of dozens of brown dwarfs and even a small number of directly-imaged exoplanets., Comment: 32 pages, 14 figures, accepted for publication in MNRAS
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- 2024
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36. The JWST Weather Report from the Nearest Brown Dwarfs I: multi-period JWST NIRSpec + MIRI monitoring of the benchmark binary brown dwarf WISE 1049AB
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Biller, Beth A., Vos, Johanna M., Zhou, Yifan, McCarthy, Allison M., Tan, Xianyu, Crossfield, Ian J. M., Whiteford, Niall, Suarez, Genaro, Faherty, Jacqueline, Manjavacas, Elena, Chen, Xueqing, Liu, Pengyu, Sutlieff, Ben J., Limbach, Mary Anne, Molliere, Paul, Dupuy, Trent J., Oliveros-Gomez, Natalia, Muirhead, Philip S., Henning, Thomas, Mace, Gregory, Crouzet, Nicolas, Karalidi, Theodora, Morley, Caroline V., Tremblin, Pascal, and Kataria, Tiffany
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Astrophysics - Solar and Stellar Astrophysics ,Astrophysics - Earth and Planetary Astrophysics - Abstract
We report results from 8 hours of JWST/MIRI LRS spectroscopic monitoring directly followed by 7 hours of JWST/NIRSpec prism spectroscopic monitoring of the benchmark binary brown dwarf WISE 1049AB, the closest, brightest brown dwarfs known. We find water, methane, and CO absorption features in both components, including the 3.3 $\mu$m methane absorption feature and a tentative detection of small grain ($<$ 1$\mu$m) silicate absorption at $>$8.5 $\mu$m in WISE 1049A. Both components vary significantly ($>$1$\%$), with WISE 1049B displaying larger variations than WISE 1049A. Using K-means clustering, we find three main transition points in wavelength for both components of the binary: 1) change in behavior at $\sim$2.3 $\mu$m coincident with a CO absorption bandhead, 2) change in behavior at 4.2 $\mu$m, close to the CO fundamental band at $\lambda >$ 4.4 $\mu$m, and 3) change in behavior at 8.3-8.5 $\mu$m, potentially corresponding to silicate absorption. We interpret the lightcurves observed with both NIRSpec and MIRI as likely stemming from 1) a deep pressure level driving the double-peaked variability seen in WISE 1049B at wavelengths $<$2.3 $\mu$m and $>$8.5 $\mu$m, 2) an intermediate pressure level shaping the lightcurve morphology between 2.3 and 4.2 $\mu$m, and 3) a higher-altitude pressure level producing single-peaked and plateaued lightcurve behavior between 4.2 and 8.5 $\mu$m., Comment: 28 pages, 27 figures, accepted to MNRAS
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- 2024
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37. Distributed multi-robot potential-field-based exploration with submap-based mapping and noise-augmented strategy
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Pongsirijinda, Khattiya, Cao, Zhiqiang, Bhowmik, Kaushik, Shalihan, Muhammad, Lau, Billy Pik Lik, Liu, Ran, Yuen, Chau, and Tan, U-Xuan
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Computer Science - Robotics - Abstract
Multi-robot collaboration has become a needed component in unknown environment exploration due to its ability to accomplish various challenging situations. Potential-field-based methods are widely used for autonomous exploration because of their high efficiency and low travel cost. However, exploration speed and collaboration ability are still challenging topics. Therefore, we propose a Distributed Multi-Robot Potential-Field-Based Exploration (DMPF-Explore). In particular, we first present a Distributed Submap-Based Multi-Robot Collaborative Mapping Method (DSMC-Map), which can efficiently estimate the robot trajectories and construct the global map by merging the local maps from each robot. Second, we introduce a Potential-Field-Based Exploration Strategy Augmented with Modified Wave-Front Distance and Colored Noises (MWF-CN), in which the accessible frontier neighborhood is extended, and the colored noise provokes the enhancement of exploration performance. The proposed exploration method is deployed for simulation and real-world scenarios. The results show that our approach outperforms the existing ones regarding exploration speed and collaboration ability., Comment: This paper has been accepted by Robotics and Autonomous Systems
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- 2024
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38. NOEMA formIng Cluster survEy (NICE): Characterizing eight massive galaxy groups at $1.5 < z < 4$ in the COSMOS field
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Sillassen, Nikolaj B., Jin, Shuowen, Magdis, Georgios E., Daddi, Emanuele, Wang, Tao, Lu, Shiying, Sun, Hanwen, Arumugam, Vinod, Liu, Daizhong, Brinch, Malte, D'Eugenio, Chiara, Gobat, Raphael, Gómez-Guijarro, Carlos, Rich, Michael, Schinnerer, Eva, Strazzullo, Veronica, Tan, Qinghua, Valentino, Francesco, Wang, Yijun, Xiao, Mengyuan, Zhou, Luwenjia, Blánquez-Sesé, David, Cai, Zheng, Chen, Yanmei, Ciesla, Laure, Dai, Yu, Delvecchio, Ivan, Elbaz, David, Finoguenov, Alexis, Gao, Fangyou, Gu, Qiusheng, Hale, Catherine, Hao, Qiaoyang, Huang, Jiasheng, Jarvis, Matt, Kalita, Boris, Ke, Xu, Bail, Aurelien Le, Magnelli, Benjamin, Shi, Yong, Vaccari, Mattia, Whittam, Imogen, Yang, Tiancheng, and Zhang, Zhiyu
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Astrophysics - Astrophysics of Galaxies - Abstract
The NOEMA formIng Cluster survEy (NICE) is a large program targeting 69 massive galaxy group candidates at $z>2$ in six deep fields. We report spectroscopic confirmation of eight groups at $1.65\leq z\leq3.61$ in COSMOS. Homogeneously selected as significant overdensities of red IRAC sources with red Herschel colors, four groups are confirmed by CO and [CI] with NOEMA 3mm observations, three are confirmed with ALMA, and one is confirmed by H$\alpha$ from Subaru/FMOS. We constructed the integrated FIR SEDs for the eight groups, obtaining total IR SFR $=260-1300~{\rm M_\odot}$~yr$^{-1}$. We adopted six methods to estimate the dark matter masses, including stellar mass to halo mass relations, overdensity with galaxy bias, and NFW profile fitting to radial stellar mass density. We found the radial stellar mass density are consistent with a NFW profile, supporting that they are collapsed structures hosted by a single dark matter halo. The best halo mass estimates are $\log(M_{\rm h}/{\rm M_\odot})=12.8-13.7$ with uncertainty of 0.3 dex. From halo mass estimates, we derive baryonic accretion rate ${\rm BAR}=(1-8)\times10^{3}\,{\rm M_{\odot}/yr}$ for this sample. We find a quasi-linear correlation between the integrated SFR/BAR and the theoretical halo mass limit for cold streams, $M_{\rm stream}/M_{\rm h}$, with ${\rm SFR/BAR}=10^{-0.46\pm0.22}\left({M_{\rm stream}/M_{\rm h}}\right)^{0.71\pm0.16}$ with a scatter of $0.40\,{\rm dex}$. Further, we compare halo masses and stellar masses with simulations, and find all structures are consistent with being progenitors of $M_{\rm h}(z=0)>10^{14}\,{\rm M_{\odot}}$ galaxy clusters, and the most massive central galaxies have stellar masses consistent with brightest cluster galaxies (BCGs) progenitors in the TNG300 simulation. The results strongly suggest these structures are forming massive galaxy clusters via baryonic and dark matter accretion., Comment: 44 pages (27pp appendix), 32 figures, 18 tables, accepted for publication in A&A
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- 2024
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39. Reasons for CSR engagement in SMES and MNCS: a qualitative perspective
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Tan Athirah binti Mohd and Ann Ho Jo
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csr ,leadership styles ,competitiveness ,organizational context ,resource availability ,Environmental sciences ,GE1-350 - Abstract
The purpose of this paper was to explore the reasons for Corporate Social Responsibility (CSR) engagement among Small Medium Enterprise (SMEs) and Multinational Corporations (MNCs) in Malaysia. The research is situated within an interpretive approach. The interview technique was employed to explore the issue. Interviews were conducted with 8 firms including 4 SMEs and 4 MNCs. The firms were selected based on the firms that are actively engaging in CSR and the detail of CSR activities have been identified via their companies websites. Five themes emerged as the reasons for CSR engagement in SMEs and MNCs: leadership styles, competitiveness, alignment with company mission, vision, and objectives, and resource availability. From the results, this study helps researchers to understand in depth the CSR terminologies, the differences in CSR activities between MNCs and SMEs, and the factors that would influence firms to engage in CSR activities. Other than that, this study will help in initiating programs workshops, seminars, and training to educate managers and SME owners on the benefits of CSR.
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- 2023
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40. Emerging Monkeypox Virus Sublineage C.1 Causing Community Transmission, Vietnam, 2023
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Hoa, Huynh Thi Thuy, Dung, Nguyen Thanh, Hung, Le Manh, Hong, Nguyen Thi Thu, Quy, Vo Truong, Thao, Nguyen Thi, Duy, Nguyen Trong, Truong, Hoang, Hoang, Tran Minh, Thanh, Nguyen Thi, Phuoc, Mai Pham Hong, Trung, Truong Ngoc, Thong, Nguyen Nhut, Huy, Nguyen Due, Thoa, Vu Thi Kim, Vuong, Vo Trong, Tai, Ngo Tan, Nhung, Huynh Kim, Linh, Dao Phuong, Thoa, Pham Thi Ngoc, Yen, Lam Minh, Thien, Tran Ba, Truc, Truong Hoang Chau, Thanh, Le Kim, Ny, Nguyen Thi Han, Hoang, Vo Tan, Ngoc, Nghiem My, Man, Dinh Nguyen Huy, Thwaites, Louise, Thanh, Tran Tan, Van Vinh Chau, Nguyen, Thwaites, Guy, Anh, Nguyen To, and Van Tan, Le
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Human monkeypox -- Distribution -- Genetic aspects ,Disease transmission -- Research ,Company distribution practices ,Health - Abstract
To date, most globally reported mpox sequences have come from Europe and North America, where sustained human-to-human transmission has resulted in explosive mpox outbreaks, especially in 2022 (1). A hallmark [...]
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- 2024
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41. Reciprocal influences among mother-grandmother coparenting relationship, mother-child attachment, and preschoolers’ self-control in Chinese intergenerational coparenting family
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Tan, Yuxin, Fang, Qiaofen, Duan, Xiang, Hou, Jinbo, Huang, Hai, Cui, Xiumin, Tan, Xiyue, and Lin, Xiuyun
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- 2024
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42. Leptin-activated hypothalamic BNC2 neurons acutely suppress food intake
- Author
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Tan, Han L., Yin, Luping, Tan, Yuqi, Ivanov, Jessica, Plucinska, Kaja, Ilanges, Anoj, Herb, Brian R., Wang, Putianqi, Kosse, Christin, Cohen, Paul, Lin, Dayu, and Friedman, Jeffrey M.
- Published
- 2024
- Full Text
- View/download PDF
43. Missing data imputation in tunnel monitoring with a spatio-temporal correlation fused machine learning model
- Author
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Tan, Xuyan, Chen, Weizhong, Tan, Xianjun, Fan, Chengkai, Mao, Yuhao, Cheng, Ke, and Du, Bowen
- Published
- 2024
- Full Text
- View/download PDF
44. Ocular Myasthenia gravis: determining the predictive factors of secondary generalisation
- Author
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Gengadharan, Prasana Nair, Ong, Wei Ting, Tan, Jie Ying, Shahrizaila, Nortina, Goh, Khean Jin, and Tan, Cheng Yin
- Published
- 2024
- Full Text
- View/download PDF
45. Fratricide-resistant CD7-CAR T cells in T-ALL
- Author
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Oh, Bernice L. Z., Shimasaki, Noriko, Coustan-Smith, Elaine, Chan, Esther, Poon, Limei, Lee, Shawn H. R., Yeap, Frances, Tan, Lip Kun, Chai, Louis Y. A., Le Bert, Nina, Tan, Nicole, Bertoletti, Antonio, Chen, Siew Peng, Del Bufalo, Francesca, Becilli, Marco, Locatelli, Franco, Yeoh, Allen E. J., and Campana, Dario
- Published
- 2024
- Full Text
- View/download PDF
46. Factors associated with the distribution of brain metastases in lung cancer: a retrospective study
- Author
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Hu, Yixin, Lei, Weiwei, Xin, Enhui, Cheng, Tan, Liu, Jiang, Tang, Yu, Lai, Yong, Yu, Hong, Tan, Yong, Yang, Jing, Huang, Junhao, Liu, Daihong, and Zhang, Jiuquan
- Published
- 2024
- Full Text
- View/download PDF
47. Cell Toxicity of Kadsuric Acid from Kadsura coccinea in Human Pancreatic Cancer Cells Through Caspase/PARP Pathway: In Vitro and In Silico Approach
- Author
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Nguyen, Tan Khanh, Tran, Manh Hung, Trung, Truong Tan, Pham, Long-Hung Dinh, Truong, Phu Chi Hieu, and Pham, Phu Tran Vinh
- Published
- 2024
- Full Text
- View/download PDF
48. The Prophylactic Protection of Salmonella Typhimurium Infection by Lentilactobacillus buchneri GX0328-6 in Mice
- Author
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Shi, Yan, Peng, Hao, Liao, Yuying, Li, Jun, Yin, Yangyan, Peng, Hongyan, Wang, Leping, Tan, Yizhou, Li, Changting, Bai, Huili, Ma, Chunxia, Tan, Wenbao, and Li, Xun
- Published
- 2024
- Full Text
- View/download PDF
49. Exome sequencing in Asian populations identifies low-frequency and rare coding variation influencing Parkinson’s disease risk
- Author
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Chew, Elaine GY, Liu, Zhehao, Li, Zheng, Chung, Sun Ju, Lian, Michelle M., Tandiono, Moses, Heng, Yue Jing, Ng, Ebonne Y., Tan, Louis CS, Chng, Wee Ling, Tan, Tiak Ju, Peh, Esther KL, Ho, Ying Swan, Chen, Xiao Yin, Lim, Erin YT, Chang, Chu Hua, Leong, Jonavan J., Peh, Ting Xuan, Chan, Ling Ling, Chao, Yinxia, Au, Wing-Lok, Prakash, Kumar M., Lim, Jia Lun, Tay, Yi Wen, Mok, Vincent, Chan, Anne YY, Lin, Juei-Jueng, Jeon, Beom S., Song, Kyuyoung, Tham, Clement C., Pang, Chi Pui, Ahn, Jeeyun, Park, Kyu Hyung, Wiggs, Janey L., Aung, Tin, Tan, Ai Huey, Ahmad Annuar, Azlina, Makarious, Mary B., Blauwendraat, Cornelis, Nalls, Mike A., Robak, Laurie A., Alcalay, Roy N., Gan-Or, Ziv, Reynolds, Richard, Lim, Shen-Yang, Xia, Yun, Khor, Chiea Chuen, Tan, Eng-King, Wang, Zhenxun, and Foo, Jia Nee
- Published
- 2024
- Full Text
- View/download PDF
50. Real-world outcomes of diffuse large B-cell lymphoma treated with frontline R-CHOP(-like) regimens in an Asian multi-ethnic population
- Author
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Lim, Ryan Mao Heng, Tan, Jing Yuan, Tan, Ya Hwee, Heng, Zane En Qi, Ng, Lawrence Cheng Kiat, Lim, Francesca Lorraine Wei Inng, Goh, Yeow Tee, Lim, Soon Thye, and Chan, Jason Yongsheng
- Published
- 2024
- Full Text
- View/download PDF
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