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- 저자 : Shuo Zhang (검색결과 102 건)
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Shuo Zhang,Yu WANG,Jiao ZHOU,Juan Li,Shixiang ZONG,You-qing Luo,Qiang WENG 한국곤충학회 2016 Entomological Research Vol.46 No.1
In this study, we report the cDNA cloning and sequence determination of Hh‐JHAMT from the seabuckthorn carpenterworm, Holcocerus hippophaecolus, by using rapid amplification of cDNA ends. The full‐length cDNA of putative Hh‐JHAMT was 1659 bp and contained a highly conserved Motif I, SAM motif I, which showed that Hh‐JHAMT like enzyme was a member of SAM‐dependent MTases. Moreover, putative Hh‐JHAMT had high homology to the other members of the JHAMT peptide family: 59% with Spodoptera litura, 54% with Bombyx mori and 54% with Helicoverpa armigera. Multiple alignments and phylogenetic analysis revealed that Hh‐JHAMT was closely related to JHAMT from Lepidoptera. Real‐time quantitative PCR experiments showed that Hh‐JHAMT mRNA expression was highest in the corpora allata (CA) complex, and was also detected at high levels during earlier larval and adult stages. The JHAMT mRNA level gradually declined during larval development, and the lowest amount of expression was observed in the pupal stage, while it increased to a higher level during adult stages. The pattern of Hh‐JHAMT expression was similar to the mode of JH biosynthesis. These results provided information concerning molecular characteristics of Hh‐JHAMT, whose expression profile suggests that the Hh‐JHAMT gene might be changed with larval development, metamorphosis and adult reproduction of the H. hippophaecolus.
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Shuo Zhang,Zeng-Jun Sun,Lauren H. Lee 동중앙아시아경상학회 2015 한몽경상학회 학술대회 Vol.2015 No.10
In recent years, with the popularity of smart mobile phone, the arrival of the mobile Internet makes e-commerce got further development, but the development of logistics industry is relatively backward, has become the biggest bottleneck in the development of electronic commerce, this paper first analyzes the development of electronic commerce is then proposed to establish and improve the electronic commerce the distribution system of measures, takes various factors into consideration, take effective methods to make the optimization of the distribution system.
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A Hierarchical Model for Mobile Ad Hoc Network Performability Assessment
( Shuo Zhang ),( Ning Huang ),( Xiaolei Sun ),( Yue Zhang ) 한국인터넷정보학회 2016 KSII Transactions on Internet and Information Syst Vol.10 No.8
Dynamic topology is one of the main influence factors on network performability. However, it was always ignored by the traditional network performability assessment methods when analyzing large-scale mobile ad hoc networks (MANETs) because of the state explosion problem. In this paper, we address this problem from the perspective of complex network. A two-layer hierarchical modeling approach is proposed for MANETs performability assessment, which can take both the dynamic topology and multi-state nodes into consideration. The lower level is described by Markov reward chains (MRC) to capture the multiple states of the nodes. The upper level is modeled as a small-world network to capture the characteristic path length based on different mobility and propagation models. The hierarchical model can promote the MRC of nodes into a state matrix of the whole network, which can avoid the state explosion in large-scale networks assessment from the perspective of complex network. Through the contrast experiments with OPNET simulation based on specific cases, the method proposed in this paper shows satisfactory performance on accuracy and efficiency.
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Shuo Zhang,Zeng-Jun Sun 동중앙아시아경상학회 2014 한몽경상연구 Vol.25 No.2
With the development of Internet technology, electronic commerce shows the vigorous vitality; along with the popularity of a mobile phone and network operator’s technology, electronic commerce began to develop online mode. According to the "2013 annual Chinese e-commerce market data monitoring report", until the December of 2013, trading in e-commerce market scale is 10.2 trillion yuan, grows 29.9% compared to the same period. The online retail market scale is 18851 billion yuan, a year-on-year growth of 42.8%. However, this data only accounted for 8.04% of the total retail sales of social consumer goods, while there are 91.96% lines which are waiting for developing. The biggest advantage of the O2O(online to offline) is it can be introduced the consumers to offline trading. The current O2O e-commerce in China is still in the initial stage of development, there are challenges and opportunities .If the network of electronic commerce and the entity shop retailers can seize the opportunity, and be acknowledged of what the consumers want and need, make full use of large data analysis, he will be successful. Firstly, this paper explains the purpose and significance of the topic, underlining the present internet background and the status of e-commerce in the Internet environment, analyzing the current situation O2O faces, besides, we give some analysis of the O2O mode and summarize the advantages of him. Secondly, through the analysis of 19e O2O, we find the problems in the process of its development. Then, through the example of 19e, we find the problem and deficiency in the development of Chinese O2O. Finally, we summarize it and give some expectations of the O2O’s development in the future.
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Zhang, Shuo,Wen, Dong-Qing,Kong, Ya-Lin,Li, Ya-Li,Zhang, Hong-Yi Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.5
Objective: To investigate the effects of secondary left-sided portal hypertension (LSPH) on the radical operation rate of patients with pancreatic cancer and systemically evaluate the prognosis of patients with LSPH secondary to pancreatic cancer after radical surgery. Materials and Methods: The data of patients with pancreatic cancer who underwent laparotomy over a 15-year period in Department of Hepatobiliary Surgery of Chinese PLA Air Force General Hospital from Jan. 1, 1997, to Jun. 30, 2012 was retrospectively reviewed. Results: A total of 362 patients with pancreatic cancer after laparotomy were selected, including 73 with LSPH and 289 without LSPH. Thirty-five patients with LSPH (47.9%) and 147 without non-LSPH (50.9%) respectively underwent radical operations. No significant difference was found between these two groups regarding the total resection rate and stratified radical resection rate according to different pathological types and cancer locations. The mean and median survival time of patients after radical operation in LSPH group were $13.9{\pm}1.3$ months and 14.8 months, respectively, while those in non-LSPH group were $22.6{\pm}1.4$ months and 18.4 months, respectively(P<0.05). Conclusions: Radical operations for pancreatic cancer and secondary LSPH are safe and effective. Because high-grade malignancy and poor prognosis are closely associated, the decision for radical surgery should be made more meticulously for the patients with pancreatic cancer.
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Shuo Zhang,Yuzheng Xia,Tao Yang,Xiang Li,Daorong Lu,Haibing Hu 전력전자학회 2022 JOURNAL OF POWER ELECTRONICS Vol.22 No.1
The generalized discrete Fourier transform (GDFT) realizes the rapid extraction of specific order harmonics, and shortens the extraction time to 1/3 of a fundamental cycle (6.7 ms at 50 Hz grid) for 6r ± 1 order harmonics. However, the GDFT becomes less accurate when the system presents background harmonics other than specific-order harmonics in the inputs. Therefore, this paper analyzes the influence introduced by these background harmonics on the GDFT. First, the frequency feature of the GDFT is derived by a geometric method based on the z-domain unit circle. Then, the extraction of the 6r ± 1 order harmonics is taken as an example to show the extraction accuracy of the GDFT. The Accuracy of Harmonic Extraction (AHE) index, is also given to evaluate the accuracy of the extraction. Simulation and experimental results confirmed the correctness of the theoretical analysis by showing that the GDFT has the same accuracy as the RDFT when only 6r ± 1 order harmonics are involved. However, if there are other background harmonics in the inputs, the extraction accuracy is affected greatly. Therefore, when the background harmonics cannot be ignored, it is necessary to analyze the AHE of the GDFT. When AHE > 95%, the GDFT has good accuracy and is applicable to real applications.
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The effect of a counter cone on the performance of an axial cyclone separator
Shuo Zhang,신원규 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.9
There are two major criteria for the performance evaluation of cyclone separators: particle collection efficiency and pressure drop. It is desirable to improve particle efficiency without increasing pressure drop. In this study, a counter cone was installed inside an axial cyclone is investigated. It was found that the d/B (ratio of the diameter of the cone to dust box inlet diameter in the cyclone separator) influences the particle collection efficiency. A small cone (0 < d/B ≤ 0.55) slightly improves the particle collection efficiency, and when d/B is equal to 0.66, the efficiency reaches a maximum. If d/B increases further, the efficiency decreases. Especially, when the d/B is equal to 0.94, the gap between becomes very narrow resulting in lowering the particle collection efficiency. On the other hand, regardless of the size of the counter cone, the turbulence kinetic energy inside the axial cyclone is not affected and thus the pressure drop can remain unchanged. And we propose a correction factor based on Hsiao et al.’s model (2011) for the prediction of the efficiency of spindle axial cyclone with a counter cone.
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