35 research outputs found
Targeted aspect based multimodal sentiment analysis:an attention capsule extraction and multi-head fusion network
Multimodal sentiment analysis has currently identified its significance in a
variety of domains. For the purpose of sentiment analysis, different aspects of
distinguishing modalities, which correspond to one target, are processed and
analyzed. In this work, we propose the targeted aspect-based multimodal
sentiment analysis (TABMSA) for the first time. Furthermore, an attention
capsule extraction and multi-head fusion network (EF-Net) on the task of TABMSA
is devised. The multi-head attention (MHA) based network and the ResNet-152 are
employed to deal with texts and images, respectively. The integration of MHA
and capsule network aims to capture the interaction among the multimodal
inputs. In addition to the targeted aspect, the information from the context
and the image is also incorporated for sentiment delivered. We evaluate the
proposed model on two manually annotated datasets. the experimental results
demonstrate the effectiveness of our proposed model for this new task
DCQA: Document-Level Chart Question Answering towards Complex Reasoning and Common-Sense Understanding
Visually-situated languages such as charts and plots are omnipresent in
real-world documents. These graphical depictions are human-readable and are
often analyzed in visually-rich documents to address a variety of questions
that necessitate complex reasoning and common-sense responses. Despite the
growing number of datasets that aim to answer questions over charts, most only
address this task in isolation, without considering the broader context of
document-level question answering. Moreover, such datasets lack adequate
common-sense reasoning information in their questions. In this work, we
introduce a novel task named document-level chart question answering (DCQA).
The goal of this task is to conduct document-level question answering,
extracting charts or plots in the document via document layout analysis (DLA)
first and subsequently performing chart question answering (CQA). The newly
developed benchmark dataset comprises 50,010 synthetic documents integrating
charts in a wide range of styles (6 styles in contrast to 3 for PlotQA and
ChartQA) and includes 699,051 questions that demand a high degree of reasoning
ability and common-sense understanding. Besides, we present the development of
a potent question-answer generation engine that employs table data, a rich
color set, and basic question templates to produce a vast array of reasoning
question-answer pairs automatically. Based on DCQA, we devise an OCR-free
transformer for document-level chart-oriented understanding, capable of DLA and
answering complex reasoning and common-sense questions over charts in an
OCR-free manner. Our DCQA dataset is expected to foster research on
understanding visualizations in documents, especially for scenarios that
require complex reasoning for charts in the visually-rich document. We
implement and evaluate a set of baselines, and our proposed method achieves
comparable results
Antibacterial hemostatic dressings with nanoporous bioglass containing silver
Nanoporous bioglass containing silver (n-BGS) was fabricated using the sol-gel method, with cetyltrimethyl ammonium bromide as template. The results showed that n-BGS with nanoporous structure had a surface area of 467 m2/g and a pore size of around 6 nm, and exhibited a significantly higher water absorption rate compared with BGS without nanopores. The n-BGS containing small amounts of silver (Ag) had a slight effect on its surface area. The n-BGS containing 0.02 wt% Ag, without cytotoxicity, had a good antibacterial effect on Escherichia coli, and its antibacterial rate reached 99% in 12 hours. The n-BGS’s clotting ability significantly decreased prothrombin time (PT) and activated partial thromboplastin time (APTT), indicating n-BGS with a higher surface area could significantly promote blood clotting (by decreasing clotting time) compared with BGS without nanopores. Effective hemostasis was achieved in skin injury models, and bleeding time was reduced. It is suggested that n-BGS could be a good dressing, with antibacterial and hemostatic properties, which might shorten wound bleeding time and control hemorrhage
Performance analysis of heat pump dryer with unit-room in cold climate regions
This study presents the development and evaluation of a novel partially open-loop heat pump dryer with a unit-room (HPDU). The unit-room was designed to enable the ambient air to be mixed with the return air, thereby reducing the influence of the ambient air on the system performance, while maintaining a high system thermal efficiency. A modelling system for the HPDU was developed and validated based on a real-scale experimental study. By using the modelling system, the system characteristics under different ambient conditions and bypass factors were analyzed. The energy benefit of the proposed HPDU was quantified through a comparative study with a closed-loop heat pump dryer (CHPD). It is evident that a maximal specific moisture extraction rate (SMER) and a minimal total energy consumption (TEC) existed when changing the bypass factor of the HPDU under certain ambient temperatures. Compared to the CHPD, the coefficient of performance (COP) of the HPDU increased by up to 39.56%, presenting a significant energy benefit for the application of HPDU
A Statistical Analysis of Hazardous Chemical Fatalities (HCFs) in China between 2015 and 2021
To study the occurrence characteristics of hazardous chemical accidents in China, mathematical analysis methods were used to study hazardous chemical fatalities (HCFs) in recent years. This research focused on selecting seven accident characteristics including time characteristics, geographical characteristics, accident type characteristics, hazardous chemical types, hazardous chemical production links, accident cause characteristics, and accident classification. The research results show that: (1) the occurrence of HCFs has obvious time-domain and regional characteristics, the number of casualties on Wednesday working days is the largest, 9:00–11:00 (inclusive) and 15:00–16:00 (inclusive) in a day are the two time periods with the largest number of incidents, the number of hazardous chemical accidents and deaths in economically developed coastal provinces is relatively high; (2) Analyze according to the type of accident statistics, the number of accidents and deaths caused by explosions, poisoning, asphyxiation, and fire are the largest; (3) Analyze according to the type of hazardous chemicals, drugs, compressed gas and liquefied gas, flammable solids, and spontaneous combustion materials, as well as flammable materials when wet are the types of hazardous chemicals that cause the most casualties; (4) Analyze according to the type of hazardous chemical accidents, the number of accidents and deaths caused in the production process is the largest; (5) Analyze according to the type of unsafe behavior by personnel, operator errors, the ignorance of safety, and the ignorance of warnings are the main causes of injuries and deaths caused by hazardous chemicals.; (6) Through single-factor feature analysis and multi-feature comprehensive cross-discussion, countermeasures, and suggestions for preventing and controlling accidents in hazardous chemical enterprises are put forward according to the characteristics of accidents caused by different accident characteristics