Observation of multi-channel non-local transport in J-TEXT plasmas

Shi, Yuejiang,Chen, Zhongyong,Yang, Zhoujun,Shi, Peng,Zhao, Kaijun,Diamond, Patrick H.,Kwon, JaeMin,Yan, Wei,Zhou, Hao,Pan, Xiaoming,Cheng, Zhifeng,Chen, Zhiping,Yang, SeongMoo,Zhang, Chi,Li, Da,Dong, IOP 2018 Nuclear fusion. Fusion nucléaire. &n.Illiga Vol.58 No.4

<P>In cold pulse experiments in J-TEXT, not only are rapid electron temperature increases in the core observed, but also steep rises in the inner density are found. Moreover, some evidence of acceleration of the core toroidal rotation is also observed during the non-local transport process of electron temperature. These new findings of cold pulse experiments in J-TEXT suggest that turbulence spreading is a possible mechanism for the non-local transport dynamics.</P>

One-step Fabrication of Biocompatible Oil-core Microcapsules with Controlled Release

Pan Shi,Dong Chen 한국고분자학회 2022 한국고분자학회 학술대회 연구논문 초록집 Vol.47 No.1

Attention-based spatial–temporal neural network for accurate phase recognition in minimally invasive surgery: feasibility and efficiency verification

Shi Pan,Zhao Zijian,Liu Kaidi,Li Feng 한국CDE학회 2022 Journal of computational design and engineering Vol.9 No.2

Laparoscopic surgery, as a representative minimally invasive surgery (MIS), is an active research area of clinical practice. Automatic surgical phase recognition of laparoscopic videos is a vital task with the potential to improve surgeons’ efficiency and has gradually become an integral part of computer-assisted intervention systems in MIS. However, the performance of most methods currently employed for surgical phase recognition is deteriorated by optimization difficulties and inefficient computation, which hinders their large-scale practical implementation. This study proposes an efficient and novel surgical phase recognition method using an attention-based spatial–temporal neural network consisting of a spatial model and a temporal model for accurate recognition by end-to-end training. The former subtly incorporates the attention mechanism to enhance the model’s ability to focus on the key regions in video frames and efficiently capture more informative visual features. In the temporal model, we employ independently recurrent long short-term memory (IndyLSTM) and non-local block to extract long-term temporal information of video frames. We evaluated the performance of our method on the publicly available Cholec80 dataset. Our attention-based spatial–temporal neural network purely produces the phase predictions without any post-processing strategies, achieving excellent recognition performance and outperforming other state-of-the-art phase recognition methods.

Nanoflower-like Ag/AAO SERS platform with quasi-photonic crystal nanostructure for efficient detection of goat serum

Guochao Shi,Mingli Wang,Yanying Zhu,Xiaoya Yan, Siye Pan,Siye Pan,Anqi Zhang 한국물리학회 2019 Current Applied Physics Vol.19 No.11

An effective SERS-based detection method has been developed to quantitatively diagnose the goat serum which overcomes the problem of diffusion limitation in traditional heterogeneous immunoassay. In this work, the ultrasensitive silver/anodic aluminum oxide (Ag/AAO) SERS platform was explored via magnetron sputtering which can precisely control the sample morphology and intergap distances. Results indicated that the localized surface plasmon resonance (LSPR) effect was sharply strengthened as the sub-10 nm nanogaps generated and the enhancement factor (EF) for crystal violet (CV) was calculated to be 3.677×107. This novel Ag/AAO substrate with substantial “hot spots” exhibited high SERS sensitivity which could obtain extremely low limits of detection (LOD) of 10−12M for CV. Importantly, this SERS platform was employed to detect goat serum and reached a LOD at 1 ng/μl. As a nondestructive detection technique, our SERS-based methodology required small sample quantity which expected to achieve more biomolecular detection.

Reliability analysis for lateral stabilityof tongwamen bridge

Pan Sheng-Shan,Shi Lei,Tan Yong-Gang,Zhang Zhe 국제구조공학회 2011 Steel and Composite Structures, An International J Vol.11 No.5

Tongwamen Bridge is a critical link between Dongmen Island and the land in Shipu town, Zhejiang province, China. It is a 238 m span, half-through, concrete-filled steel tubular (CFST) X-type arch bridge. The width of the deck is only 10 m, yielding a width-to-span ratio of 1/23.8. The plane truss type section rib was adopted, which made of two CFST chords and web member system. The lateral stability is the key issue to this bridge. However, the existing researches on Tongwamen Bridge’s lateral stability are all the deterministic structural analysis. In this paper, a new strategy for positioning sampling points of the response surface method (RSM), based on the composite method combining RSM with geometric method for structural reliability analysis, is employed to obtain the reliability index of lateral stability. In addition the correlated parameters were discussed in detail to find the major factors. According to the analysis results, increasing the stiff of lateral braces between the arch ribs and setting the proper inward-incline degree of the arch rib can enhance obviously the reliability of lateral stability. Moreover, the deck action of non-orienting force is less than the two factors above. The calculated results indicate that the arch ribs are safe enough to keep excellent stability, and it provides the foundation that the plane truss rib would be a competitive solution for a long-span, narrow, CFST arch bridge.

The Collision between Art and Digital-Interactive Design in Traditional Chinese Painting

Shi XiaoHe(시효하),Pan Younghwan(반영환) 대한인간공학회 2019 대한인간공학회 학술대회논문집 Vol.2019 No.5

Objective: The aim of this paper is to study how to use digital media to present the artistic imagery of Guqin music and ink painting art in an intuitive way, and combine the two in a digital interactive design way to enhance the sensory sensory effect of art and help the audience to understand and Perceive Chinese traditional art culture. Background:In traditional Chinese art, the artistic imagery of Guqin music and landscape painting is the same. As two important art forms of traditional art, the two have important significance for the perception and recognition of traditional culture. With the rapid development of media technology, the experience of the audience has changed. The use of digital media to explore the traditional Guqin music and landscape painting art has become a realistic topic of artistic creation. Method:The transformation of art is rooted in digital and new forms of communication. It can be said to be a self-concept from the amazement and reflection of the work, to the creative and playful interaction with the work; (1)Use Unity3d to build a three-dimensional landscape scene in ink style.(2) Use the Leap motion gesture recognition device to extract the action information of the Guqin playing, build a virtual Guqin music to drive the 3D scene, and construct an experience space for sound and picture interaction.Results: The physical experience and psychological experience of ink-and-wash style interaction design is higher than the satisfaction of traditional Guqin music art and landscape painting art experience.Conclusion: The ink-and-wash style interaction design is an attempt to digitally create the Guqin music and landscape painting art, as well as the exploration of cultural identity. Application: It enhances the Synesthesia effect of art and contributes to the perception and identity of traditional culture. The combination of traditional art and contemporary technology is an exploration of the new methods of Chinese traditional culture.

A research on the Design and Construction of Smart Environmental Protection Information Platform in Nanjing

Shi XiaoHe,Younghwan Pan 한국융합학회 2021 한국융합학회논문지 Vol.12 No.1

도시생활에서 환경은 매우 중요한 요소이다. 환경요소는 스마트 도시 계획에서 꼭 다루어야 하는 주제이나, 도시 환경의 정보화 및 데이터 공유 부분은 현재 미흡한 상태여서 이를 개선할 필요가 있다. 본 연구는 난징시의 스마 트화의 일환으로 친환경 정보화 건설 및 서비스 수요에 대한 심층조사를 진행하였고, 난징시의 스마트 도시 계획에 부합하면서, 환경의 품질을 개선하고 환경정보 서비스를 제공하는 지능형 친환경 정보 플랫폼의 디자인 연구와 그 구축 에 대한 연구를 수행하였다. 또한 정보를 시각화 하는 부분에 대한 연구도 진행을 하였다. 이 결과는 난징 시 스마트 도시 구축에 중요한 모듈이다. Environment is an important factor in city life. Environmental elements are a subject that must be discussed in the smart city plan, but there is still a lack of information and data sharing in the urban environment, so improvements are needed. As part of the intelligent of Nanjing, this research has made in-depth investigation into the construction and service demand of environmental information, and has carried out the research on the design and construction of intelligent information platform that conforms to Nanjing intelligent city planning, improves environmental quality and provides environmental information service. The visualization of information is also studied. The result is an important module in the construction of intelligent city in Nanjing.

Experimental study on the cavitation flow and motion characteristics of the vehicle launched underwater

Shi Yao,Lu Jiewen,Gao Shan,Pan Guang,Ren Jinyi 대한조선학회 2023 International Journal of Naval Architecture and Oc Vol.15 No.-

In this paper, an experimental system was independently designed to investigate the cavitation flow mechanism and motion characteristic of the vehicle launched underwater. Conducted experiments based on high-speed photography, and the influence of cavity morphological evolution and kinematic characteristics with the different launch and transverse velocities were analyzed. The results show that cavity shedding phenomenon occurs on different scales. Subsequently, a wide range of pressure impulse on the surface of the vehicle is caused by the collapse of large-scale cavity groups, resulting in an obvious sputtering phenomenon on its surface during the water-exit stage. The more the launch speed increases, the longer the initial cavity length is. Moreover, the moment of completely shedding the cavity delays during the water exit process; Furthermore, with the increase of transverse speed, the attitude angle generally shows an increasing trend, but its growth rate slowed down during the large-scale shedding stage of the cavity.

Characteristics of Carbohydrate Assimilation and Distribution in Walnut (Juglans regia L.)

Shi-Wei Wang,Cun-De Pan,Cui-Fang Zhang,Hong Chen 한국원예학회 2021 원예과학기술지 Vol.39 No.2

Based on <SUP>13</SUP>C isotope tracer technology, we investigated the <SUP>13</SUP>C abundance (δ<SUP>13</SUP>C), <SUP>13</SUP>C content(<SUP>13</SUP>Camount), and new fixed <SUP>13</SUP>C percentage (<SUP>13</SUP>CPCT) in different organs and different metabolic components in girdled fruit-bearing shoots at different stages of fruit growth and development in walnut. Our aim was to analyze the dynamic characteristics of carbohydrate assimilation, transportation, and utilization in different stages of walnut fruit growth and development. The results showed that (1) at 0 h after the feeding, δ<SUP>13</SUP>C, <SUP>13</SUP>Camount, and <SUP>13</SUP>CPCT in sucrose from the leaves were the highest and positively correlated with net photosynthetic rate of leaves (p < 0.05); (2) at 24 h after the feeding, δ13C, <SUP>13</SUP>Camount, and <SUP>13</SUP>CPCT in sucrose from the carpopodium reached their peak values; (3) δ<SUP>13</SUP>C,<SUP>13</SUP>Camount, and <SUP>13</SUP>CPCT in sucrose from the peel were lower than those of hexose at 48 h after feeding in the fast-growing stage, but they all reached maximum levels in peel sucrose at 48 h after feeding in the oil conversion stage; and (4) the highest δ<SUP>13</SUP>C, <SUP>13</SUP>Camount, and <SUP>13</SUP>CPCT were recorded in all carbohydrates from the seed kernel 48 h after feeding, among which the highest δ<SUP>13</SUP>C, <SUP>13</SUP>Camount, and <SUP>13</SUP>CPCT were recorded in sucrose. These results suggested that sucrose was the main form of carbohydrate assimilation and transportation in walnut fruit, and large amounts of sucrose are accumulated in the peel and in the kernel, where it is also the base for the transformation of oil.

First Report of Root Rot Caused by Plectosphaerella cucumerina on Cabbage in China

( Pan-liang Li ),( A-li Chai ),( Yan-xia Shi ),( Xue-wen Xie ),( Bao-ju Li ) 한국균학회 2017 Mycobiology Vol.45 No.2

Severe root rot was observed in fields of cabbages (Brassica oleracea L.) in 2015 in China. Cardinal symptoms of this disease included root rot and wilting leaves. A fungus was isolated from diseased tissues consistently. Based on the morphological features and molecular analysis of the ITS-5.8S rDNA and D1/D2 domain of the 28S rRNA gene, it was identified as Plectosphaerella cucumerina. This is the first report of P. cucumerina causing cabbage root rot in China and the world.