分类： 物理学 >> 核物理学 提交时间： 2025-05-30
Zeng, Mr. Yujie
Song, Ms. Tianzi
Wang, Mr. Xuesen
Zhang, Prof. Yumei
Lin, Dr. Tao
You, Prof. Zhengyun
摘要： In high-energy physics~(HEP) experiments, visualization software plays a pivotal role in detector design, offline software development, and event data analysis. The visualization tools integrate detailed detector geometry with complex event data models, providing the researchers with invaluable insights into experimental results. Phoenix is an emerging general-purpose visualization platform for the current and next-generation HEP experiments. In this study, we develop an event display software based on Phoenix for the CEPC experiment. It offers necessary functionalities for visualizing detector geometries and displaying event data, allowing the researchers to optimize detector design, test simulation and reconstruction algorithms, and analyze event data in a visualized way. Additionally, we discuss the future applications of the event display software, including its usage in online monitoring and the potential to build virtual reality projects for enhanced data visualization.
分类： 地球科学 >> 空间物理学 提交时间： 2017-01-04
摘要： A scattering degree of preference parameter is developed from Huynen canonical dichotomy which displays superior classification ability over the scattering similarity parameter. A scattering hue parameter is then proposed and demonstrated to be of superiority compared with scattering alpha on description of scattering mechanism. A scattering saturation parameter is further defined and shows comparable to scattering entropy on description of scattering randomness. A Huynen dichotomy-based PolSAR data visualization scheme is finally obtained which not only works more efficient but also makes the results look better than that from H/alpha. �2014 VDE VERLAG GMBH.
分类： 工程与技术科学 >> 工程与技术科学其他学科 提交时间： 2023-01-03 合作期刊: 《2022年第三届艺术设计、传播与工程科学研讨会》
摘要： This paper provides a systematic review of papers in children's furniture design research through the CiteSpace visualization tool. We analyzed 446 papers on this field of research from CNKI and found the most influential publications, authors, journals, and institutions. In addition, we explored the current status of hotspots in this research field and predicted the future development trend through the analysis of keywords and Burst Keywords. The results show that the research field of children's furniture design in China is divided into ten major clusters, which can be grouped into three research areas, namely, basic research on children's furniture design, child-oriented design concept, and principles of children's furniture design. The future trends of children's furniture design are safety, child-centred, and humanization. The analysis of the research results in this field through CiteSpace software can enhance the understanding of the research in this field and provide a partial reference for the future research field of children's furniture design.
分类： 生物学 >> 生物物理学 >> 细胞生物学 提交时间： 2016-05-12
Deng, Liping
Ren, Ruotong
Liu, Guang-Hui
Wu, Jun
Suzuki, Keiichiro
Belmote, Juan Carlos Izpisua
Liu, Guang-Hui
Liu, Guang-Hui
摘要： Nuclease-based genome editing has proven to be a powerful and promising tool for disease modeling and gene therapy. Recent advances in CRISPR/Cas and TALE indicate that they could also be used as a targeted regulator of gene expression, as well as being utilized for illuminating specific chromosomal structures or genomic regions.
分类： 物理学 >> 核物理学 提交时间： 2025-05-08
摘要： In the BESIII detector at Beijing electron-positron collider, billions of events from e+e− collisions are recorded. These events passing through the trigger system are saved in raw data format files. They play an important role in the study of physics at τ -charm energy region. Here, we publish an e+e− collision dataset containing both Monte Carlo simulation samples and real data collected by the BESIII detector. The data passes through the detector trigger system, file format conversion, physics information extraction, and finally saves the physics information and detector response in text format files. This dataset is publicly available and is intended to provide interested scientists and those outside of the BESIII collaboration with event information from BE- SIII that can be used in understanding the physics research in e+e− collisions, developing visualization projects for physics education, public outreach, and science advocacy.
分类： 物理学 >> 核物理学 提交时间： 2025-04-01
摘要： In the BESIII detector at Beijing electron-positron collider, billions of events from $e^{+}e^{-}$ collisions are recorded. These events passing through the trigger system are saved in raw data format files. They play an important role in the study of physics at $\tau$-charm energy region. Here, we introduce an $e^{+}e^{-}$ collision dataset containing both Monte Carlo simulation samples and real data collected by the BESIII detector, which passes through the detector trigger system, file format conversion, physics information extraction, and finally saves the physics information and detector response in text format files. This dataset is publicly available and is intended to provide interested scientists and those outside of the BESIII community with event information from BESIII that can be used in understanding the physics research in $e^{+}e^{-}$ collisions, developing visualization projects for physics education, public outreach, and science advocacy.
分类： 管理学 >> 管理学其他学科 提交时间： 2022-11-24 合作期刊: 《2022年第三届传播、创新和经济管理国际研讨会》
摘要： Under the development trend of multifunctional integration of various media, traditional news reporting methods can not make readers understand well when facing some complex news information. Therefore, visual news production based on charts, animations and interaction has played a great advantage. Based on this, this paper adopts the research method of in-depth interview, further explored the operation process research of special class group of visual news production, pointed out the guarantee mechanism of visual reports in the authenticity and objectivity of news, and aimed at the in-depth thinking of its current problems and future development.
分类： 动力与电气工程 >> 工程热物理学 提交时间： 2018-01-24 合作期刊: 《热科学学报》
摘要： Free surface vortex control is vital in a pump sump system because the air absorbed by free surface vortex induces noise, vibration, and cavitation corrosion on the pumping system. In this study, the change of free surface vortex and air absorption in a pump intake has been investigated by the Volume of Fraction (VOF) method with steady multiphase flow model in order to represent the behavior of the free surface vortex exactly. The homogeneous free surface model is used to apply interactions of air and water. The results show that air intake by the free surface vortex motion can be visualized using the iso-surface of air volume fraction. The vortices make an air column from the free surface to the pump intake. Also, it was found that the free surface vortex can be controlled by installing curtain walls.
分类： 生物学 >> 生物物理学 提交时间： 2016-05-15
摘要： Protein nanocages (PNCs) have been recognized as a promising platform for nanomedicine innovation. Real-time in vivo tracking of PNCs can provide critically important information for the development of PNC-based diagnostics and therapeutics. Here we demonstrate a general strategy for monitoring the behaviors of PNCs in vivo by encapsulating a Ag2S quantum dot (QD) with fluorescence in the second near-infrared window (NIR-II, 1000-1700 nm) inside the PNC, using simian virus 40 (SV40) PNC (PNCSV40) as a model. Benefiting from the high spatiotemporal resolution and deep tissue penetration of NIR-II fluorescence imaging, the dynamic distribution of the PNCSV40 in living mice was tracked in real time with high fidelity, and adopting the PEGylation strategy, surface chemistry-dependent in vivo behaviors of PNCSV40 were clearly revealed. This study represents the first evidence of real-time tracking of the intrinsic behaviors of PNCs in vivo without interference in PNC-host interactions by encapsulating nanoprobes inside. The as-described imaging strategy will facilitate the study of interactions between exogenously introduced PNCs and host body and prompt the development of future protein-based drugs, sensors, and high-efficacy targeted delivery systems.
分类： 生物学 >> 生物物理学 >> 细胞生物学 提交时间： 2016-05-05
Shan, Hong
Yin, Chang-Cheng
Sun, Fei
Wang, Zihao
Zhang, Fa
Wang, Zihao
Zhang, Fa
Wang, Zihao
Sun, Fei
Xiong, Yong
Sun, Fei
摘要： Single particle analysis, which can be regarded as an average of signals from thousands or even millions of particle projections, is an efficient method to study the three-dimensional structures of biological macromolecules. An intrinsic assumption in single particle analysis is that all the analyzed particles must have identical composition and conformation. Thus specimen heterogeneity in either composition or conformation has raised great challenges for high-resolution analysis. For particles with multiple conformations, inaccurate alignments and orientation parameters will yield an averaged map with diminished resolution and smeared density. Besides extensive classification approaches, here based on the assumption that the macromolecular complex is made up of multiple rigid modules whose relative orientations and positions are in slight fluctuation around equilibriums, we propose a new method called as local optimization refinement to address this conformational heterogeneity for an improved resolution. The key idea is to optimize the orientation and shift parameters of each rigid module and then reconstruct their three-dimensional structures individually. Using simulated data of 80S/70S ribosomes with relative fluctuations between the large (60S/50S) and the small (40S/30S) subunits, we tested this algorithm and found that the resolutions of both subunits are significantly improved. Our method provides a proof-of-principle solution for high-resolution single particle analysis of macromolecular complexes with dynamic conformations.
分类： 动力与电气工程 >> 工程热物理学 提交时间： 2017-06-22 合作期刊: 《热科学学报》
摘要： The study on the condensation and the two-phase flow pattern in the condensation section is important to understand the operating mechanisms in a thermosyphon. In this paper, a new electric capacitance tomography (ECT) sensor was designed for the visualization measurement in a liquid by removing the shielding case and sealing with insulating hydrophobic material. It was successfully used to measure the condensation process in a thermosyphon under different operating temperatures. The thermosyphon was made of silica glass, and alcohol was used as a working fluid. The alcohol vapor was cooled to condense through the heat convection with the cooling water. The operating temperature was controlled by a heater with different power outputs. The experimental results show that the alcohol vapor condensed in stripes and unevenly on the wall surface at a low operating temperature. The liquid bridge will be formed periodically at the operating temperature of 90 degrees C, and the time interval between two liquid bridges will be shorter with the increase of the operating temperature. At 117 degrees C or even higher operating temperatures, the complete liquid bridge cannot be formed sometimes due to the difference of the growth rate of the surface wave around the circumference.
分类： 生物学 >> 生物物理学 提交时间： 2016-05-12
摘要： Total internal reflection fluorescence microscope has often been used to study the molecular mechanisms underlying vesicle exocytosis. However, the spatial occurrence of the fusion events within a single cell is not frequently explored due to the lack of sensitive and accurate computer-assisted programs to analyze large image data sets. Here, we have developed an image analysis platform for the nonbiased identification of different types of vesicle fusion events with high accuracy in different cell types. By performing spatiotemporal analysis of stimulus-evoked exocytosis in insulin-secreting INS-1 cells, we statistically prove that individual vesicle fusion events are clustered at hotspots. This spatial pattern disappears upon the disruption of either the actin or the microtubule network; this disruption also severely inhibits evoked exocytosis. By demonstrating that newcomer vesicles are delivered from the cell interior to the surface membrane for exocytosis, we highlight a previously unappreciated mechanism in which the cytoskeleton-dependent transportation of secretory vesicles organizes exocytosis hotspots in endocrine cells.
分类： 动力与电气工程 >> 工程热物理学 提交时间： 2018-01-24 合作期刊: 《热科学学报》
摘要： A multi-objective performance optimization method is proposed, and the problem that single structural parameters of small fan balance the optimization between the static characteristics and the aerodynamic noise is solved. In this method, three structural parameters are selected as the optimization variables. Besides, the static pressure efficiency and the aerodynamic noise of the fan are regarded as the multi-objective performance. Furthermore, the response surface method and the entropy method are used to establish the optimization function between the optimization variables and the multi-objective performances. Finally, the optimized model is found when the optimization function reaches its maximum value. Experimental data shows that the optimized model not only enhances the static characteristics of the fan but also obviously reduces the noise. The results of the study will provide some reference for the optimization of multi-objective performance of other types of rotating machinery.
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