Wireless Network based Formation Control for Multiple Agents

Jing Yan,Xian Yang,Xiao-yuan Luo,Xin-Ping Guan,Chang-chun Hua 제어·로봇·시스템학회 2014 International Journal of Control, Automation, and Vol.12 No.2

Motivated by the potentially application merits of wireless networked control systems (WNCSs), this paper presents a network-based formation framework for multi-agent systems. First, we construct a discrete formation protocol by integrating 802.11b. Meanwhile, one agent is considered as the reference, and the other ones keep a desired formation with the reference via communication net-works. Using Lyapunov stability theory, sufficient convergence conditions are derived, and the verifi-cation problem of the sufficient conditions can be transformed as a linear matrix inequality (LMI) feasibility problem. Solving this LMI feasibility problem, a networked-based feedback controller can be easily obtained. Finally, simulation studies are provided to demonstrate the effectiveness of the pro-posed method.

Design and Implementation of Secure Cloud Storage System Based on Elliptic Encryption

Jing Yan,Zhi-heng Lin,Yong-zhen Li ASCONS 2021 IJASC Vol.3 No.1

Background/Objectives: With the rapid development of Internet technology, more and more Internet users tend to store their data and information in the cloud, and the security of the existing cloud storage system has been criticized by people, which is not conducive to protecting the data and information security of users. Therefore, how to effectively guarantee the security of cloud user data becomes more and more important. Security cloud storage system is the key to solve this problem. Methods/Statistical analysis: A secure cloud storage system is implemented for the user’s cloud data security. Its main function is: in the user login phase, the strict user identity authentication method is adopted to control the user’s access rights and prevent illegal users from logging in. Firstly, the identify authentication scheme based on zero knowledge proof is proposed. Secondly, in the user data upload stage, the user data is split. Finally, the encryption algorithm based on elliptic curve is proposed to encrypt the user’s file splitting table. Findings: The experimental results show that, in the user identify authentication stage, compared with the traditional user authentication method, the security of user identify authentication can be greatly improved by using the identify authentication method based on zero-knowledge proof. Improvements/Applications: The secure cloud storage system based on ellipse encryption developed in this thesis can realize the security of user's data by encryption while considering the efficiency of data upload and download, and has a broad application prospect.

Electrospun Polyacrylonitrile-based Porous Carbon Nanofiber Materials for Supercapacitor Electrodes

Jing Yan,Young Gyu Jeong 한국고분자학회 2016 한국고분자학회 학술대회 연구논문 초록집 Vol.41 No.2

By the Translators’ Discretion: A Study of Xíngshì yán into Hangeul

Jing Yan,조지은 한국학중앙연구원 한국학중앙연구원 2020 THE REVIEW OF KOREAN STUDIES Vol.23 No.1

This paper examines the transmission of Xíngshì yán in Joseon Korea and the roles of the translator in late Joseon literary culture. Through a comparative study of the Chinese vernacular short story collection, Xíngshì yán 型世言, alongside its Korean translation, we show how the translator in question went further than simply transferring the text from Chinese to Korean. Rather, the translator also acted as a text moderator and an editor, domesticating the text for its readers, mainly royal and gentry women. In the capacity as a textmoderator, the translator made a creative contribution in reconstructing the narrative style and in the use of lexical items and speech style. Simultaneously, as an editor, the translator omitted parts of the text that required an advanced contextual knowledge of Chinese language or culture to comprehend, while also adapting parts of the text that relate to story background, conversations between characters, description of story details, and characters’ psychological processes. Drawing upon Skopos theory, we argue that the act of translating Xíngshì yán was motivated by the goal of presenting the story to a new audience, that is royal and gentry women.

Thermal Insulation Performance of Cotton and PET-based Hybrid Fabrics Impregnated with Silica Aerogel via a Facile Dip-dry Process

Jing Yan,최형열,홍영기,정영규 한국섬유공학회 2018 Fibers and polymers Vol.19 No.4

We report the morphological features and thermal insulation properties of a series of cotton- and PET-based hybrid fabrics impregnated with silica aerogel. For the purpose, commercially available cotton and PET knitted fabrics were dipped into aqueous dispersions including different silica aerogel contents, dried, and stacked to 1, 3, and 5 layers. The SEM images revealed that the silica aerogel particles were well incorporated into cotton or PET knitted fabrics. The thermal insulating performance of the hybrid fabrics as functions of the silica aerogel content and the number of layers of stacked fabrics were characterized by monitoring the surface temperatures of the fabrics on a plate with a wide temperature range of ~50-80 oC using an infrared camera. The higher thermal insulation performance was attained for both cotton- and PET-based hybrid fabrics with higher silica aerogel contents. In addition, 3-layered hybrid fabrics exhibited noticeably improved thermal insulation performance, compared to 1- or 5-layered fabrics. The thermal insulation property of the cotton-based hybrid fabrics was dominantly influenced by silica aerogel than that of PET-based hybrid fabrics. The overall results demonstrated that the cotton- and PET-based hybrid fabrics with silica aerogel manufactured by a facile dip-dry process could be utilized as protective garments, heat-sensitive devices, pipes, automotive, aircrafts, and buildings for thermal insulation applications.

An In situ Forming Hydrogel Based on Photo-Induced Hydrogen Bonding

Jingyan Zhang,Shifeng Wang,Zeren Zhao,Dong Si,Haiou Zhou,Mingdi Yang,Xianbiao Wang 한국고분자학회 2020 Macromolecular Research Vol.28 No.12

Stimulus-induced in situ forming hydrogels possess the characteristics of easy management and minimal invasiveness via simple injection at target sites with a liquid and easy forming bulk gels. In the present study, a photoreactive monomer, N'-(2-nitrobenzyl)-N-acryloyl glycinamide (NBNAGA) was introduced to modify polyacrylamide (PAM) hydrogel preparation with stimuli responsiveness. Firstly, poly(acrylamide-co-N'-(2-nitrobenzyl)-N-acryloyl glycinamide), P(AM-co-NBNAGA), copolymer solution was prepared via reversible addition fragmentation chain transfer (RAFT) polymerization using the monomers mixture of AM, NBNAGA, and N,N'- methylene bis-acrylamide (BIS). The obtained polymer solution with viscous, transparent, and flowable appearance contained weak single hydrogen bonding and slight chemical crosslinking in a microscopic perspective. Secondly, without further purification, after irradiation using UV light at 365 nm, poly(acrylamide-co-N-acryloyl glycinamide) (P(AM-co-NAGA)) hydrogel conveniently in situ formed due to the cleavage of o-nitrobenzyl groups and the corresponding emergency of dual hydrogen bonding among “uncaged” dual amide moieties. P(AM-co-NAGA) hydrogel depicted both favorable temperature sensitivity and self-healing properties, then the heating induced in vitro release profiles of doxorubicin (DOX) was analyzed.

Novel Organic/Inorganic Hybrid Star Polymer Surface-Crosslinked with Polyhedral Oligomeric Silsesquioxane

Jingyan Zhang,Dong Si,Shifeng Wang,Hao Liu,Xiaoming Chen,Haiou Zhou,Mingdi Yang,Guoying Zhang 한국고분자학회 2020 Macromolecular Research Vol.28 No.2

Novel organic/inorganic hybrid star polymer was prepared dually crosslinked within inner-core via divinylbenzene (DVB) and outer-surface via octafunctional polyhedral oligomeric silsesquioxane (POSS). Core cross-linked star polymers bearing dialkynyl-terminated polystyrene arms, (dialkynyl-PS)n-CCL, were synthesized at first by the atom transfer radical polymerization (ATRP) of DVB using α,α-dialkynyl-terminated PS macroinitiator, followed by the subsequent fractionation. Under high dilution conditions, (dialkynyl-PS)n-CCL was subjected to surface cross-linking with octa(3- azidopropyl) polyhedral oligomeric silsesquioxane, POSS-(N3)8, via click reaction, affording POSS-functionalized hybrid polymer doubly cross-linked within core and surface regions, SCL-(PS)n-CCL. FT-IR, 1H NMR, GPC, and elemental analysis results revealed that on average, the obtained hybrid polymer possesses a cross-linked PDVB inner core, ~14 linear PS arms (the MW per arm of 5.1 kDa), and ~4-5 POSS moieties at outer surface. Differential scanning calorimetry (DSC) thermograms and thermogravimetric analysis (TGA) revealed that after surface cross-linking the thermal stability of SCL-(PS)n-CCL is considerably improved. This work provides a proof-of-concept example for the preparation of dually cross-linked hybrid star polymer, which represents a novel category of organic/inorganic composite materials with unique chain architectures.

CALM1 rs3179089 polymorphism might contribute to coronary artery disease susceptibility in Chinese male: a case–control study

Huang Jingyan,Huang Siyun,Li Jinhong,Li Minhua,Gong Lin,Li Tongshun,Gu Lian 한국유전학회 2022 Genes & Genomics Vol.44 No.4

Background: Calmodulin 1 (CALM1) mutations are involved in the development of coronary artery disease (CAD). However, the relationship of CALM1 rs3179089 polymorphism with CAD is unknown. Objective: This study aimed to identify the relationship of CALM1 rs3179089 polymorphism with CAD susceptibility, CALM1 expression, blood pressure, blood glucose, blood coagulation and serum lipid levels of CAD patients. Methods: 550 CAD patients and 550 control subjects were genotyped for CALM1 using Sequenom MassARRAY technology. CALM1 expression level was measured by quantitative real time polymerase chain reaction (qRT-PCR). Results: CALM1 mRNA expression was higher in CAD patients than that in control subjects (P < 0.001). CAD patients with CC genotype had higher CALM1 mRNA expression level than control subjects with CC genotype (P = 0.006). Genotypic frequency of rs3179089 was different between male patients of CAD and control subjects (P = 0.045). Rs3179089 polymorphism was related to CAD risk of males in recessive model (P = 0.039). Moreover, rs3179089 polymorphism was associated with systolic blood pressure (SBP), diastolic blood pressure (DBP), fasting plasma glucose (FPG), and D-Dimer (D-D) level of patients with CAD in recessive model (P = 0.013 for SBP; P = 0.034 for DBP; P = 0.004 for FPG; P = 0.046 for D-D). In addition, rs3179089 polymorphism was correlated with low-density lipoprotein cholesterol (LDL-C) and total cholesterol (TC) serum levels of patients with CAD in both addictive (P = 0.025 for LDL-C; P = 0.001 for TC) and recessive models (P = 0.001 for LDL-C; P = 0.001 for TC). Conclusion: CALM1 expression is associated with development of CAD. CALM1 rs3179089 polymorphism affects CAD susceptibility in males, and blood pressure, blood glucose, blood coagulation and serum lipid of CAD patients.

Interaction Design In The Chinese Shadow Puppet Art For Digital Cultural Heritage

QIn Jingyan, YANG Xiao 한국디자인트렌드학회 2007 한국디자인포럼 Vol.16 No.-

라이브 스트리밍 커머스 앵커 속성이 지각된 가치와 구매 의도에 미치는 영향: 중국의 농산물 시장을 중심으로

( Panting Song ),( Jingyan Ma ),강태원 ( Taewon Kang ) 한국유통경영학회 2021 유통경영학회지 Vol.24 No.6

Purpose: Due to the impact of the COVID-19, the sales of agricultural specialties have been hampered, and live streaming commerce has developed in tandem to provide a channel for the sales of agricultural s pecialties. With the impetus of government policy and market, live streaming + e-commerce has become a new model for the sales of agricultural specialties. This study explores the influence of anchor attributes on the perceived value and purchase intention of agricultural specialties in the live-streaming commerce environment and tries to propose the development of live-streaming commerce of agricultural specialties under the epidemic. Research design, data, and methodology: This study conducted a questionnaire survey of consumers who had purchased agricultural products through live streaming e-commerce. Finally, the survey results of 719 consumers were analyzed using SPSS23.0 and AMOS23.0 on reliability and validity analysis, correlation analysis, path analysis, and mediating analysis. Results: The results of this study show that - first, the professionalism of the anchor has a positive effect on purchase intention and an insignificant effect on the emotional value and perceived risk. Second, the interactivity, entertainment, and trustworthiness of anchors have insignificant positive effects on purchase intention. Third, the mediating effect of perceived emotional value and perceived risk between anchor attributes and purchase intention is significant. Perceived value partially mediates between anchor’s professionalism and purchase intention, while it fully mediates between anchor’s interactivity, entertainment, trustworthiness, and purchase intention. Implications: To better attract consumers to buy agricultural products through live streaming commerce, e-commerce companies should commit to building professional live streaming teams, training anchors, improving their professionalism, and optimizing live streaming content in a consumer-oriented manner. Platforms and relevant departments should also raise the market access threshold, strengthen market supervision, and investigate and deal with behaviors that harm consumers’ legitimate rights and interests.