Guanxi Networks in China

Jiang, Ke,Barnett, George A. World Association for Triple Helix and Future Stra 2013 Journal of Contemporary Eastern Asia Vol.12 No.2

This paper explores the influences of the traditional Chinese culture on social relations in China. It provides an introduction to the concept of Guanxi, the notion that social connections are based on socially situated reciprocity. This is different from social interaction in Western society that is based on self-interest and equity. Guanxi represents the foundation of social networks in many Eastern countries. As such, the study of social networks in China requires scholars to examine Guanxi networks. The paper demonstrates how a Guanxi perspective might be added to the examination of various theories that comprise structural (network) theory, including social capital theory, social exchange theory, cognitive and contagion theories, and the role of homophily for the study of Chinese society and its social organizations.

Superior Hybrid Cathode Material Containing Lithium-Excess Layered Material and Graphene for Lithium-Ion Batteries

Jiang, Ke-Cheng,Wu, Xing-Long,Yin, Ya-Xia,Lee, Jong-Sook,Kim, Jaekook,Guo, Yu-Guo American Chemical Society 2012 ACS APPLIED MATERIALS & INTERFACES Vol.4 No.9

<P>Graphene-wrapped lithium-excess layered hybrid materials (Li<SUB>2</SUB>MnO<SUB>3</SUB>·LiMO<SUB>2</SUB>, M = Mn, Ni, Co, hereafter abbreviated as LMNCO) have been synthesized and investigated as cathode materials for lithium-ion batteries. Cyclic voltammetry measurement shows a significant reduction of the reaction overpotential in benefit of the graphene conducting framework. The electrochemical impedance spectroscopy results reveal that the graphene can greatly reduce the cell resistance, especially the charge transfer resistance. Our investigation demonstrates that the graphene conducting framework can efficiently alleviate the polarization of pristine LMNCO material leading to an outstanding enhancement in cell performance and cycling stability. The superior electrochemical properties support the fine hybrid structure design by enwrapping active materials in graphene nanosheets for high-capacity and high-rate cathode materials.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2012/aamick.2012.4.issue-9/am301202a/production/images/medium/am-2012-01202a_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am301202a'>ACS Electronic Supporting Info</A></P>

Improved kinetics of LiNi_1/3Mn_1/3Co_1/3O₂ cathode material through reduced graphene oxide networks

Jiang, Ke-Cheng,Xin, Sen,Lee, Jong-Sook,Kim, Jaekook,Xiao, Xiao-Ling,Guo, Yu-Guo The Royal Society of Chemistry 2012 Physical chemistry chemical physics Vol.14 No.8

<P>An electronically conducting 3D network of reduced graphene oxide (RGO) was introduced into LiNi<SUB>1/3</SUB>Mn<SUB>1/3</SUB>Co<SUB>1/3</SUB>O<SUB>2</SUB> (LNMC) cathode material in a special nano/micro hierarchical structure. The rate test and cycling measurement showed that the hierarchical networks remarkably improve the high rate performance of LNMC electrode for lithium-ion batteries. The effect of RGO conducting networks on kinetic property was investigated by electrochemical impedance spectroscopy (EIS) and potentiostatic intermittent titration (PITT). The EIS results reveal that the RGO network greatly decreases the resistance of lithium batteries, especially the charge transfer resistance which can be attributed to the significantly improved conducting networks. The enhancement of apparent diffusion coefficient by the RGO conducting networks is shown by PITT. The power performance was found to be limited by the electrical conduction in the two-phase region, which can be greatly facilitated by the hierarchical RGO network together with carbon black. The as-obtained LNMC/RGO cathode exhibits an outstanding electrochemical property supporting the design idea of electronically conducting 3D networks for the high-energy and high-power lithium-ion batteries.</P> <P>Graphic Abstract</P><P>A 3D conducting network of reduced graphene oxide nanosheets is introduced into LiNi<SUB>1/3</SUB>Mn<SUB>1/3</SUB>Co<SUB>1/3</SUB>O<SUB>2</SUB> and is found to significantly promote the kinetics for Li storage. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2cp23363k'> </P>

Rebalancing SMAD7/SMAD3 Signaling Reduces Adhesion Formation during Flexor Tendon Healing

( Ke Jiang ),( Yuling Li ),( Chao Xiang ),( Yan Xiong ),( Jiameng Jia ) 한국미생물생명공학회 2023 Journal of microbiology and biotechnology Vol.33 No.3

Transforming growth factor-β is a key factor in regulating adhesion formation during tendon healing. We investigated the effectiveness of SMAD family members, SMAD7 and SMAD3, in the TGF-β/Smad signaling during flexor tendon repair. Mouse flexor toe deep tendon rupture anastomosis models were made. On days 3, 7, 14, 21, and 28, the expressions of smad7 and smad3 in flexor tendon tissues were detected by RT-qPCR and western blot. Furthermore, postoperative intraperitoneal injections of SMAD7 agonists or SMAD3 antagonists were given. The degree of tendon healing was evaluated by adhesion testing and biomechanical experiments. Hematoxylin and eosin (HE) staining was used to observe the pathological changes. Immunohistochemistry was used to evaluate the expressions of collagen III, SMAD3, and SMAD7. The mRNA levels of matrix metalloproteinases, Mmp2 and Mmp9, and scleraxis (SCX) in flexor tendon tissue were detected by RT-qPCR. Smad3 expression increased and Smad7 expression decreased in flexor tendon tissue after injury. In addition, the SMAD7 agonist blocked SMAD3 phosphorylation. SMAD7 agonist and SMAD3 antagonist both improved adhesion formation during flexor tendon healing, and decreased the expressions of collagen III, Mmp9, and SCX, while increasing Mmp2 expression. This study provides a possible theoretical basis for the SMAD7-SMAD3 signal cascade during flexor tendon adhesion healing.

Exploring computer vision and artificial intelligence-based distance measurement tools for the standing long jump

Cheng Jiang(강성),Jia-Qi Sun(손가기),Ke-Xin Qi(기가심),Xue Jiang(강설),Xiangchuan Jin(김향천),Xuanshang Jin(김현상) 한국체육측정평가학회 2022 한국체육측정평가학회지 Vol.24 No.1

이 연구에서 제자리 멀리뛰기의 측정 범위에 대한 핵심 기술은 주로 두 가지의 단계를 거친다. 첫 번째 단계는 환경 초기화 단계로, 주로 제자리 멀리뛰기의 필드, 카메라 및 인체의 핵심 지점의 정량적 식별을 포함한다. 두 번째 단계는 범위 설정 단계로 카메라의 점프 프레임과 착지 프레임의 적정 세트를 추출하고 발가락과 발뒤꿈치 영역 또는 범위의 핵심 포인트를 식별하는 것으로 구성된다. 이 연구의 목적을 달성하기 위해서 총 20회의 제자리 멀리 뛰기 동작을 측정하였으며 정확도를 평가한 결과 측정 오차는 0.58cm, 표준편차는 0.24로 나타났다. 따라서 이 연구는 제자리 멀리뛰기 동작의 결과에 대한 오차를 1㎝ 이내로 조절할 수 있다는 것이 입증되었으며, 이는 곧 높은 정확도를 지닌 도구로서 판단된다. 또한 이 연구는 일반적인 웹캠을 사용하기 때문에 다른 제자리 멀리뛰기 검사 방식에 비해 장비의 가격이 저렴하고, 유지비용 또한 부담을 덜어줌과 동시에 높은 지능을 가지고 있는 도구라는 장점이 있다. 따라서 이 연구 결과를 통해 널리 보급되는 것을 기대할 수 있다. The key technology of standing long jump ranging in this study are mainly manifested in two stages: the first stage is the environment initialization stage, which mainly includes the quantitative identification of standing long jump field, camera and human body key points; the second stage is the ranging stage, which consists of extracting the set of jump frame and landing frame and identifying the key points of toe and heel. After the evaluation of test accuracy, the measurement is conducted 20 times, the error is 0.58cm, and the standard deviation is 0.24. It is proved that this study can control the error of standing long jump test results within 1cm, which shows that the research results have high test accuracy. Because this study uses an ordinary webcam, compared with other standing long jump test methods, it has the advantages of higher intelligence, low price and low maintenance cost. The research results are easy to be widely popularized.

Improved DV-Hop Localization Algorithm Based on Anchor Weight and Distance Compensation in Wireless Sensor Network

Ming Jiang,Yunfei Li,Yuan Ge,Wengeng Gao,Ke Lou,Shinong Wang,Juanjuan Jiang 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.12

Position information is the foundation of massive applications in Wireless Sensor Network(WSN). Three improved positioning algorithms based on DV-Hop are proposed in order to enhance the positioning accuracy of wireless sensor nodes. First improved algorithm is distance compensation algorithm (DCA) that creates a triangle model to compensate the estimated distance. The second improved algorithm creates a new chain table for all anchor nodes to record and compute the average hop distance. The third improved algorithm is weighting different anchor nodes with anchor nodes’ nearest unknown nodes. The second and third improved algorithms are based on the DCA. The simulation results show that the three improved algorithms are better than the original DV-Hop in localization accuracy. Compared to the original DV-Hop algorithm, the simulation results shows that the three improved algorithms proposed in the paper increase the positioning accuracy of the unknown nodes.

Effect of Route of Preoperative Biopsy on Endoscopic Submucosal Dissection for Patients with Early Gastric Cancer

Jiang, Hui,Tu, Hui-Ming,Qiao, Qiao,Xu, Ke-Bin,Li, Jie,Qi, Xiao-Wei,Ge, Xiao-Song Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.20

Objective: To observe and compare the effects of multi-patch biopsy under conventional white light imaging endoscopy (C-WLI) and precise targeted biopsy under magnifying narrow-band imaging endoscopy (M-NBI) on the endoscopic submucosal dissection (ESD) of early gastric cancers and intraepithelial neoplasias. Methods: According to the way of selecting biopsy specimens, patients were divided into C-WLI and M-NBI groups, 20 cases. The ESD operations of the 2 groups were compared quantitively. Results: The mean frequency of biopsy in M-NBI group was ($1.00{\pm}0.00$), obviously lower than in the C-WLI group ($4.78{\pm}1.02$) (P<0.01).The average total number of selected biopsy specimens was also fewer ($1.45{\pm}0.12$ and $7.82{\pm}2.22$, respectively, P<0.01). There was no significant difference in the time of determining excision extension, marking time and the time of specimen excision of 2 groups during the ESD (P>0.05), whereas submucosal injection time, mucosal dissection time, stopping bleeding time, wound processing time in the M-NBI group were significantly shorter than in the C-WLI group (P<0.01). Conclusion: Precise targeted biopsy under M-NBI can obviously shorten the time of ESD operation, with small quantity of tissues but high pathological positive rate.

Standardized Design of the Transmitting Coils in Inductive Coupled Endoscope Robot Driving Systems

Ke, Quan,Jiang, Pingping,Yan, Guozheng The Korean Institute of Power Electronics 2017 JOURNAL OF POWER ELECTRONICS Vol.17 No.3

A transmitting coil with an optimal topology and number of turns can effectively improve the performance of the wireless power transfer (WPT) systems for endoscope robots. This study proposes the evaluation parameters of the transmitting coils related to the performance of the WPT system to standardize the design of the transmitting coils. It considers both the quality factor of transmitting coils and the coupling factor between the two sides. Furthermore, an analytical model of transmitting coils with different topologies is built to exactly estimate the evaluation parameters. Several coils with the specified topologies are wound to verify the analytical model and the feasibility of evaluation parameters. In the case of a constant power received, the related evaluation parameters are proportional to the transfer efficiency of the WPT system. Therefore, the applicable frequency ranges of transmitting coils with different topologies are determined theoretically. Then a transmitting coil with a diameter of 69 cm is re-optimized both theoretically and experimentally. The transfer efficiency of the WPT system is increased from 3.58% to 7.37% with the maximum magnetic field intensity permitted by human tissue. Finally, the standardized design of the transmitting coil is achieved by summing-up and facilitating the optimization of the coils in various situations.

Image flickering-free polymer stabilized fringe field switching liquid crystal display

Jiang, Yingfei,Qin, Guangkui,Xu, Xiaoguang,Zhou, Li,Lee, SeungHee,Yang, Deng-Ke The Optical Society 2018 Optics express Vol.26 No.25

Adjustable Parameter-based Multi-objective Fault Estimation Observer Design for Continuous-time/Discrete-time Dynamic Systems

Ke Zhang,Vincent Cocquempot,Bin Jiang 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.3

This paper addresses an adjustable parameter (AP)-based multi-objective fault estimation design forcontinuous-time/discrete-time dynamic systems. First, a fault estimation observer with AP is constructed to on-lineidentify the size of occurred faults. The fault estimation design not only possesses a wider application comparedwith adaptive observers, but also uses the current output information to enhance fault estimation performance. Then a multi-objective approach is proposed to determine the gain matrices of fault estimation observer. Moreover,fault estimation results with the slack-variable technique are obtained to further reduce the conservatism. Finally,simulation results of an aircraft application are presented to illustrate the effectiveness of our contribution.