74 research outputs found
EL-VIT: Probing Vision Transformer with Interactive Visualization
Nowadays, Vision Transformer (ViT) is widely utilized in various computer
vision tasks, owing to its unique self-attention mechanism. However, the model
architecture of ViT is complex and often challenging to comprehend, leading to
a steep learning curve. ViT developers and users frequently encounter
difficulties in interpreting its inner workings. Therefore, a visualization
system is needed to assist ViT users in understanding its functionality. This
paper introduces EL-VIT, an interactive visual analytics system designed to
probe the Vision Transformer and facilitate a better understanding of its
operations. The system consists of four layers of visualization views. The
first three layers include model overview, knowledge background graph, and
model detail view. These three layers elucidate the operation process of ViT
from three perspectives: the overall model architecture, detailed explanation,
and mathematical operations, enabling users to understand the underlying
principles and the transition process between layers. The fourth interpretation
view helps ViT users and experts gain a deeper understanding by calculating the
cosine similarity between patches. Our two usage scenarios demonstrate the
effectiveness and usability of EL-VIT in helping ViT users understand the
working mechanism of ViT.Comment: 10 pages, 7 figures, conferenc
Smoking Experimentation among Elementary School Students in China: Influences from Peers, Families, and the School Environment
The aim of this study was to investigate experimentation with smoking among primary school students in China. Data were acquired from a recent survey of 4,073 students in grades 4 to 6 (ages 9–12) in 11 primary schools of Ningbo City. The questions were adapted from the Global Youth Tobacco Survey (GYTS). Results suggest that although the Chinese Ministry of Education (MOE) encourages smoke-free schools, experimentation with cigarettes remains a serious problem among primary school students in China. Peers, family members, and the school environment play important roles in influencing smoking experimentation among students. Having a friend who smoked, seeing a family member smoke, and observing a teacher smoking on campus predicted a higher risk of experimentation with smoking; the exposure to anti-tobacco materials at school predicted a lower risk of experimentation with smoking. The evidence suggests that public health practitioners and policymakers should seek to ensure the implementation of smoke-free policies and that intervention should target young people, families, and communities to curb the commencement of smoking among children and adolescents in China
Integrated lithium niobate microwave photonic processing engine
Integrated microwave photonics is an intriguing field that leverages
integrated photonic technologies for the generation, transmission, and
manipulation of microwave signals in chip-scale optical systems. In particular,
ultrafast processing and computation of analog electronic signals in the
optical domain with high fidelity and low latency could enable a variety of
applications such as MWP filters, microwave signal processing, and image
recognition. An ideal photonic platform for achieving these integrated MWP
processing tasks shall simultaneously offer an efficient, linear and high-speed
electro-optic modulation block to faithfully perform microwave-optic conversion
at low power, and a low-loss functional photonic network that can be configured
for a variety of signal processing tasks, as well as large-scale, low-cost
manufacturability to monolithically integrate the two building blocks on the
same chip. In this work, we demonstrate such an integrated MWP processing
engine based on a thin-film lithium niobate platform capable of performing
multi-purpose processing and computation tasks of analog signals up to 92 giga
samples per second at CMOS-compatible voltages. We demonstrate high-speed
analog computation, i.e., first- and second-order temporal integration and
differentiation with computing accuracies up to 98.1 %, and deploy these
functions to showcase three proof-of-concept applications, namely, ordinary
differential equation solving, ultra-wideband signal generation and high-speed
edge detection of images. We further leverage the image edge detector to enable
a photonic-assisted image segmentation model that could effectively outline the
boundaries of melanoma lesion in medical diagnostic images, achieving orders of
magnitude faster processing speed and lower power consumption than conventional
electronic processors
Method for Detecting the Inside of Coke Drum Using Acoustic Signals
A distance and acoustic intensity reverberation (DAIR) physical model is developed that can be successfully applied to the signal processing of the hydraulic decoking process online monitoring. In this model, the transmission characteristics of acoustic signals generated by a moving sound source in a dynamic confined space are first analyzed using data recursion and correction according to the coordinate continuity in adjacent area and adjacent time. The results show that the nondetection zone of acoustic signals generated directly by the impact of water is eliminated, and the surface distribution of coke in the drum can be mapped in real time
Bibliometric analysis of kinship analysis from 1960 to 2023: global trends and development
Kinship analysis is a crucial aspect of forensic genetics. This study analyzed 1,222 publications on kinship analysis from 1960 to 2023 using bibliometric analysis techniques, investigating the annual publication and citation patterns, most productive countries, organizations, authors and journals, most cited documents and co-occurrence of keywords. The initial publication in this field occurred in 1960. Since 2007, there has been a significant increase in publications, with over 30 published annually except for 2010. China had the most publications (n = 213, 17.43%), followed by the United States (n = 175, 14.32%) and Germany (n = 89, 7.28%). The United States also had the highest citation count. Sichuan University in China has the largest number of published articles. The University of Leipzig and the University of Cologne in Germany exhibit the highest total citation count and average citation, respectively. Budowle B was the most prolific author and Kayser M was the most cited author. In terms of publications, Forensic Science International-Genetics, Forensic Science International, and International Journal of Legal Medicine were the most prolific journals. Among them, Forensic Science International-Genetics boasted the highest h-index, citation count, and average citation rate. The most frequently cited publication was “Van Oven M, 2009, Hum Mutat”, with a total of 1,361 citations. The most frequent co-occurrence keyword included “DNA”, “Loci”, “Paternity testing”, “Population”, “Markers”, and “Identification”, with recent interest focusing on “Kinship analysis”, “SNP” and “Inference”. The current research is centered around microhaplotypes, forensic genetic genealogy, and massively parallel sequencing. The field advanced with new DNA analysis methods, tools, and genetic markers. Collaborative research among nations, organizations, and authors benefits idea exchange, problem-solving efficiency, and high-quality results
The effect of parenting styles on Chinese undergraduate nursing students’ academic procrastination: the mediating role of causal attribution and self-efficacy
BackgroundAcademic procrastination is common among college students, but there is a lack of research on the influencing mechanism of academic procrastination among nursing students. The purpose of this study was to explore the influence of parental rearing patterns on academic procrastination of nursing students, and the mediating role of causal attribution and self-efficacy.MethodsUsing Parental Bonding Instrument, Aitken Procrastination Inventory, Multidimensional Multi-Attribution Causality Scale and General Self-Efficiency Scale, the data of 683 nursing undergraduates from two universities in China were collected. Moreover, path analysis for structural equation modeling via AMOS 26.0 to evaluate mediation path model.ResultsPositive parenting style was negatively associated with academic procrastination (r = –0.350) and negative parenting style was positively associated with academic procrastination (r = 0.402). Positive parenting style directly or indirectly predicted academic procrastination through the mediating effect of internal attributional style (β = –0.10, 95% CI: –0.18 to –0.04) and self-efficacy (β = –0.07, 95% CI: –0.11 to –0.03), and this mediating effect accounted for 41.46% of the total effect. Positive parenting style directly or indirectly predicted academic delay through the mediating effect of external attributional style (β = 0.12, 95% CI: 0.07 to 0.17) and self-efficacy (β = 0.05, 95% CI: 0.03 to 0.08), and this mediating effect accounted for 42.5% of the total effect. In addition, causal attribution and self-efficacy of nursing students play a chain intermediary role between parenting style and academic procrastination.ConclusionParents should give students more care and autonomy and reduce control. In addition, educators should give students attribution training, which is helpful to improve students’ self-efficacy and reduce academic procrastination
Unique hole-accepting carbon-dots promoting selective carbon dioxide reduction nearly 100% to methanol by pure water
X.L., M.K.B., J.T. acknowledge EPSRC (EP/S018204/2/1), Leverhulme Trust (Grant No: RPG-2017-122) and Newton Advanced Fellowship grant ((NA170422 and NAF\R1\191163).). X.H., Z.X.G. and S.A.S. acknowledge UCL Grace High-Performance Computing Facility (Grace@UCL) and EPSRC (EP/K021192/1, EP/L018330/1). R.G. thanks the FRQNT for postdoctoral funding and NSERC for operational funding. Y.W., J.C. and C.J., acknowledge CSC Scholarship. R.G., J.F.T. and J.R.D. acknowledge ERC AdG Intersolar grant (291482). J.F.T. acknowledges EPSRC CDT (EP/L015277/1). W.Z. thanks EPSRC for Titan Themis S/TEM microscope (EP/L017008/01). We also thank Dr. Jijia Xie for constructive comments on experimental design.Solar-driven CO2 reduction by abundant water to alcohols can supply sustainable liquid fuels and alleviate global warming. However, the sluggish water oxidation reaction has been hardly reported to be efficient and selective in CO2 conversion due to fast charge recombination. Here, using transient absorption spectroscopy, we demonstrate that microwave-synthesised carbon-dots (mCD) possess unique hole-accepting nature, prolonging the electron lifetime (t50%) of carbon nitride (CN) by six folds, favouring a six-electron product. mCD-decorated CN stably produces stoichiometric oxygen and methanol from water and CO2 with nearly 100% selectivity to methanol and internal quantum efficiency of 2.1% in the visible region, further confirmed by isotopic labelling. Such mCD rapidly extracts holes from CN and prevents the surface adsorption of methanol, favourably oxidising water over methanol and enhancing the selective CO2 reduction to alcohols. This work provides a unique strategy for efficient and highly selective CO2 reduction by water to high-value chemicals.Publisher PDFPeer reviewe
The role of taurine in male reproduction: Physiology, pathology and toxicology
Taurine, a sulfur-containing amino acid, has a wide range of biological effects, such as bile salt formation, osmotic regulation, oxidative stress inhibition, immunomodulation and neuromodulation. Taurine has been proved to be synthesized and abundant in male reproductive organs. Recently, accumulating data showed that taurine has a potential protective effect on reproductive function of male animals. In physiology, taurine can promote the endocrine function of the hypothalamus-pituitary-testis (HPT) axis, testicular tissue development, spermatogenesis and maturation, delay the aging of testicular structure and function, maintain the homeostasis of the testicular environment, and enhance sexual ability. In pathology, taurine supplement may be beneficial to alleviate pathological damage of male reproductive system, including oxidative damage of sperm preservation in vitro, testicular reperfusion injury and diabetes -induced reproductive complications. In addition, taurine acts as a protective agent against toxic damage to the male reproductive system by exogenous substances (e.g., therapeutic drugs, environmental pollutants, radiation). Related mechanisms include reduced oxidative stress, increased antioxidant capacity, inhibited inflammation and apoptosis, restored the secretory activity of the HPT axis, reduced chromosomal variation, enhanced sperm mitochondrial energy metabolism, cell membrane stabilization effect, etc. Therefore, this article reviewed the protective effect of taurine on male reproductive function and its detailed mechanism, in order to provide reference for further research and clinical application
mABC: multi-Agent Blockchain-Inspired Collaboration for root cause analysis in micro-services architecture
The escalating complexity of micro-services architecture in cloud-native
technologies poses significant challenges for maintaining system stability and
efficiency. To conduct root cause analysis (RCA) and resolution of alert
events, we propose a pioneering framework, multi-Agent Blockchain-inspired
Collaboration for root cause analysis in micro-services architecture (mABC), to
revolutionize the AI for IT operations (AIOps) domain, where multiple agents
based on the powerful large language models (LLMs) perform blockchain-inspired
voting to reach a final agreement following a standardized process for
processing tasks and queries provided by Agent Workflow. Specifically, seven
specialized agents derived from Agent Workflow each provide valuable insights
towards root cause analysis based on their expertise and the intrinsic software
knowledge of LLMs collaborating within a decentralized chain. To avoid
potential instability issues in LLMs and fully leverage the transparent and
egalitarian advantages inherent in a decentralized structure, mABC adopts a
decision-making process inspired by blockchain governance principles while
considering the contribution index and expertise index of each agent.
Experimental results on the public benchmark AIOps challenge dataset and our
created train-ticket dataset demonstrate superior performance in accurately
identifying root causes and formulating effective solutions, compared to
previous strong baselines. The ablation study further highlights the
significance of each component within mABC, with Agent Workflow, multi-agent,
and blockchain-inspired voting being crucial for achieving optimal performance.
mABC offers a comprehensive automated root cause analysis and resolution in
micro-services architecture and achieves a significant improvement in the AIOps
domain compared to existing baseline
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