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      • KCI등재

        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.

      • Discussion on the establishment and improvement of the electronic commerce logistics distribution system

        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.

      • 关于线上线下融合的电子商务模式的研究 - 19e为中心 -

        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.

      • KCI등재

        Evaluation and Comparation of a Novel Surgical Technique and Hemivertebra Resection to the Correction of Congenital Cervical Scoliosis in Lower Cervical and Cervicothoracic Spine

        Shuo Cao,Xin Chen,Shengfa Pan,Yinze Diao,Yanbin Zhao,Tian Xia,Weishi Li,Feifei Zhou,Yu Sun 대한척추신경외과학회 2022 Neurospine Vol.19 No.4

        Objective: To report concave-side distraction technique to treat congenital cervical scoliosis in lower cervical and cervicothoracic spine. To evaluate and compare clinical and radiographic results of this procedure with classic hemivertebra resection procedure. Methods: This study reviewed 29 patients in last 13 years. These patients were divided into convex-side resection group (group R) and concave-side distraction group (group D). Radiographic assessment was based on parameter changes preoperatively, postoperatively and at last follow-up. Demographic data, surgical data and complications were also evaluated and compared between the 2 groups. Results: In group R, mean age was 8.9 ± 3.3 years and follow-up was 46 ± 18 months. Operation time and blood loss averaged 500 ± 100 minutes, 703 ± 367 mL. In group D, mean age was 9.9 ± 2.8 years and follow-up was 34 ± 14 months. Operation time and blood loss averaged 501 ± 112 minutes, 374 ± 181 mL. Structural Cobb angle was corrected from 29.4° ± 12.5° to 5.3° (2.1°–18.1°) (p = 0.001) and 33.7° ± 14.1° to 12.8° ± 11.4° (p < 0.001) in groups R and D. Compensatory Cobb angle had a spontaneous correction rate of 59.6% (40.0%–80.8%) and 59.7% ± 23.0% in groups R and D. Mandibular incline, clavicle angle and spine coronal balance were significantly improved at last follow-up in both groups. All correction rates were not statistically different between groups. However, group D had significant less blood loss (p < 0.001) and operation time (p = 0.004) per vertebra than group R. Seven patients developed C5 nerve root palsy and recovered by 6 months of follow-up. Conclusion: Both surgical procedures are safe and effective in correcting congenital cervical scoliosis. But concave-side distraction technique has less blood loss and time-consuming during surgery, which provides a better option for the treatment of congenital cervical scoliosis.

      • KCI등재

        Label-free Detection of the Transcription Initiation Factor Assembly and Specific Inhibition by Aptamers

        Shuo Ren,유안유안장,Hye Rim Yoon,Sun Woo Hong,신동혁,이상호,이동기,진문수,Irene M. Min,김소연 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.5

        The binding of TATA-binding protein (TBP) to the TATA-box containing promoter region is aided by many other transcriptional factors including TFIIA and TFIIB. The mechanistic insight into the assembly of RNA polymerase II preinitation complex (PIC) has been gained by either directly altering a function of target protein or perturbing molecular interactions using drugs, RNAi, or aptamers. Aptamers have been found particularly useful for studying a role of a subset of PIC on transcription for their ability to inhibit specific molecular interactions. One major hurdle to the wide use of aptamers as specific inhibitors arises from the difficulty with traditional assays to validate and determine specificity, affinity, and binding epitopes for aptamers against targets. Here, using a technique called the bio-layer interferometry (BLI) designed for a label-free, real-time, and multiplexed detection of molecular interactions, we studied the assembly of a subset of PIC, TBP binding to TATA DNA, and two distinct classes of aptamers against TPB in regard to their ability to inhibit TBP binding to TFIIA or TATA DNA. Using BLI, we measured not only equilibrium binding constants (KD), which were overall in close agreement with those obtained by electrophoretic mobility shift assay, but also kinetic constants of binding (kon and koff), differentiating aptamers of comparable KDs by their difference in binding kinetics. The assay developed in this study can readily be adopted for high throughput validation of candidate aptamers for specificity, affinity, and epitopes, providing both equilibrium and kinetic information for aptamer interaction with targets.

      • Investigation and Research on the Survival Status of Tujia Left-behind Children in Wantan Town under the Background of Healthy China

        Sun Jian,MA Yan,LI Shuo,KAN Mengyao,WEI Jinian 아시아건강운동학회 2022 Journal of Asian Society for Health & Exercise Vol.4 No.1

        PURPOSE : Taking the tujia nationality primary and secondary school left-behind children in Wantan Town, Yichang city as the investigation object. This paper analyzes the existing problems and puts forward the corresponding countermeasures to provide theoretical reference for improving the living conditions of left-behind children. METHODS : Field investigation, questionnaire survey and statistical analysis were used to investigate the living conditions of ethnic left-behind children in primary and secondary schools from five aspects: living environment, healthy diet, sleeping time, physical exercise and life goals. RESULTS : There was a strong negative linear correlation between partial eating and school food (r = -0.729, P < 0.01); there was a linear correlation between sleep time and weekly exercise times (R = 0.817, P < 0.01); subjects lack parental supervision and care, and their dreams and vision are limited to some extent lack of physical exercise resources, resulting in weak awareness of exercise; there is a shortage of useful magazines and books; subjects lack parental supervision and care, and their dreams and vision are limited to some extent without parental supervision and care, dreams and vision are limited to a certain extent. CONCLUSIONS : The survival status of tujia left-behind children in Wantan Town, Yichang city is not optimistic. 1)Schools improve food and educate left-behind children about healthy eating; 2)Parents teach left-behind children to use electronic products reasonably; 3)The school moderately improves physical education resources; 4)The Ministry of Education provides helpful books for left-behind children; 5)The school cultivates the self-management consciousness and ability of left-behind children.

      • KCI등재

        Study on Electrical Aging Characteristics of Fiber Sheath Materials in Power Transformer Oil

        Sun Lu,Fan Xiaozhou,Jiang Shuo,Wang Bowen,Liu Yunpeng,Gao Shuguo,Meng Lingming 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.1

        Optical fiber has great potential in the development of online monitoring for trans-formers. In this paper, the electrical aging test of fiber sheath material based on a gradual voltage-rising method was performed and the influence of thermal aging on electrical aging was determined. Compared to the oil-paper insulation performance of traditional transformers, it was found that ethylene tetrafluoroethylene(ETFE), polytetrafluoroethylene(PTFE) and Polyamide 12 (PA 12) were better than oil-paper. Statistical analysis of the ETFE material and oil-paper test data was conducted using double-parameter Weibull distribution. The inverse power and exponential functions were used to fit the experimental data and voltage tolerance coefficients of the ETFE material were obtained. Experimental results show the parameters of the ETFE model in the inverse power function and exponential function model are better than those of the oil paper insulation, and the sheathed fiber is ETFE that can be stably operated in the transformer.

      • KCI등재

        Study on preparation of inorganic binder stabilized material with large dosage of phosphogypsum

        Sun Qiqi,Tao Liangjing,Li Xin,Xu Wei,Yao Shuo,Li Jinpeng,Ren Qi-Fang,Chen Yue’e,Xu Chunshan,Wu Zilong,Zhu Yuelei,Ding Yi,오원춘 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.6

        With the rapid development of the phosphorus chemical industry, a large amount of phosphogypsum (PG) is discharged. The impurities in PG pollute the surrounding soil, the groundwater and the air in the long-term storage. In this paper, PG as the main raw material is used to study the stable material of inorganic binder in the condition of large dosage of PG. With PG and graded gravel as stabilized materials, and cement and fly ash as binder, materials are mixed to determine the influence of PG ratio and the amount of activator on the mixture. The results show that the mechanical strength of the mixture increased first and then decreased with the increase in the proportion of PG replacing graded gravel in the mixture. The activator significantly improves the properties of the material system and makes a significant contribution to the curing of PG. The best ratio of pretreated PG: cement: fly ash: aggregate is 50:6:5:39. The amount of activator added by the external mixing method is 0.3%, which can make the unconfined compressive strength reach 4.1 MPa after 7d. Finally, water-soluble phosphorus leaching experiment is conducted for all the samples. The results show that phosphorus leaching is so little that no secondary pollution of the environment is caused.

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