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      • KCI등재

        Horizontal Thinking vs Vertical Thinking: A Comparison between Chinese and Western Philosophical Counseling based on Socrates and Confucius

        Yueyao Ma,Xiaojun Ding,Feng Yu 강원대학교 인문과학연구소 2021 Journal of Humanities Therapy Vol.12 No.2

        Similar to the First and Second problematics distinction of thinking figured out by Hall and Ames (1995), we further propose two modes of thinking, i.e., horizontal thinking and vertical thinking, which can also be defined as analogical/correlative thinking and causal thinking. When being extended to the field of philosophical research, they can be used to manifest the differences between Chinese and Western philosophical thinking. Philosophical counseling is an emerging activity which attempts to make the academic and theoretical philosophy more practical and helpful in people’s daily life. Focusing on Chinese thinking (horizontal thinking) and Western thinking (vertical thinking), we analyze the differences between philosophical counseling in the East and West under different modes of thinking from the general to the specific in logical sequences. We especially select Socratic dialogue and Confucius’ heuristic teaching as epitomes of Western and Chinese thinking, in order to explore the possibility of combining the two together and search for an appropriate localization approach to philosophical counseling in China.

      • KCI등재

        Comparative transcriptome analyses provide insights into the adaptation mechanisms to acute salt stresses in juvenile Sinonovacula constricta

        Bin Ma,Zhaoshou Ran,Xiaorong Xu,Jilin Xu,Kai Liao,Jiayi Cao,Xiaojun Yan 한국유전학회 2019 Genes & Genomics Vol.41 No.5

        Background Sinonovacula constricta is an economically important bivalve species in China, Korea and Japan that widely resides in estuarine and coastal areas where salinity fluctuates rapidly. However, little is known about its adaptation mechanisms to acute salt stresses. Objective To reveal the underlying molecular mechanisms involved in acute salt stresses in juvenile S. constricta. Methods Nine cDNA libraries (triplicate each trial) were established from juvenile S. constricta, which were subjected to low salinity (5 psu), optimal salinity (15 psu) and high salinity (25 psu) for 6 h, respectively. Results Illumina sequencing generated 478,587,310 clean reads totally, which were assembled into 427,057 transcripts of 246,672 unigenes. Compared with the control, 1259 and 2163 differentially expressed genes (DEGs) were identified under acute low and high salt stresses, respectively. GO and KEGG enrichment analyses of DEGs revealed that several key metabolic modulations were mainly responsible for the acute salt stresses. According to the significantly highlighted KEGG pathways, some key DEGs were identified and discussed in details. Notably, based on which, some potential osmolytes were further speculated. Conclusion Here, we carried out a unique report of comparative transcriptome analyses in juvenile S. constricta in response to acute salt stresses. The identified DEGs and their significantly enriched GO terms and KEGG pathways were critical for understanding and further investigating the underlying the physical and biochemical performances, and ultimately facilitated S. constricta breeding. Besides, the transcriptome data greatly enriched the genetic information of S. constricta, which were valuable for promoting its molecular biology researches.

      • KCI등재

        Data Access Control Scheme Based on Blockchain and Outsourced Verifiable Attribute-Based Encryption in Edge Computing

        Chao Ma,Xiaojun Jin,Song Luo,Yifei Wei,Xiao-jun Wang 한국인터넷정보학회 2023 KSII Transactions on Internet and Information Syst Vol.17 No.7

        The arrival of the Internet of Things and 5G technology enables users to rely on edge computing platforms to process massive data. Data sharing based on edge computing refines the efficiency of data collection and analysis, saves the communication cost of data transmission back and forth, but also causes the privacy leakage of a lot of user data. Based on attribute-based encryption and blockchain technology, we design a fine-grained access control scheme for data in edge computing, which has the characteristics of verifiability, support for outsourcing decryption and user attribute revocation. User attributes are authorized by multi-attribute authorization, and the calculation of outsourcing decryption in attribute encryption is completed by edge server, which reduces the computing cost of end users. Meanwhile, We implemented the user's attribute revocation process through the dual encryption process of attribute authority and blockchain. Compared with other schemes, our scheme can manage users' attributes more flexibly. Blockchain technology also ensures the verifiability in the process of outsourcing decryption, which reduces the space occupied by ciphertext compared with other schemes. Meanwhile, the user attribute revocation scheme realizes the dynamic management of user attribute and protects the privacy of user attribute.

      • KCI등재

        Injectable In situ Forming Chitosan-Based Hydrogels For Curcumin Delivery

        Titima Songkroh,Xiaojun Ma,Hongguo Xie,Weiting Yu,Xiudong Liu,Guangwei Sun,Xiaoxi Xu 한국고분자학회 2015 Macromolecular Research Vol.23 No.1

        In this paper, a series of injectable in situ forming chitosan-based hydrogels were prepared by chemicalcrosslinking of chitosan and genipin with the cooperation of ionic bonds between chitosan and sodium salts at roomtemperature. Four hydrogels (A, B, C, and D) were obtained by mixing chitosan, genipin and a sodium salt of trisodiumphosphate (Na3PO4·12H2O), sodium sulfate (Na2SO4), sodium sulfite (Na2SO3), or sodium bicarbonate (NaHCO3)and examined for their characteristics, morphology, and rheological properties. Their cell viability assaysexhibited low toxicity and the localized in situ gel formation was detected after subcutaneous injections in rat. Curcuminwhich possesses many pharmaceutical potentials but has low bioavailability, was chosen as a drug model. Invitro curcumin release profiles exhibit sustained release properties with initial burst release for all hydrogels withabout 3 to 6 times higher cumulative release than other gel controls. The results of this study demonstrate that ourhydrogels have a potential as local curcumin carriers.

      • KCI등재

        Reactive Current Assignment and Control for DFIG Based Wind Turbines during Grid Voltage Sag and Swell Conditions

        Hailiang Xu,Xiaojun Ma,Dan Sun 전력전자학회 2015 JOURNAL OF POWER ELECTRONICS Vol.15 No.1

        This paper proposes a reactive current assignment and control strategy for a doubly-fed induction generator (DFIG) based wind-turbine generation system under generic grid voltage sag or swell conditions. The system’s active and reactive power constrains during grid faults are investigated with both the grid- and rotor-side convertors (GSC and RSC) maximum ampere limits considered. To meet the latest grid codes, especially the low- and high-voltage ride-through (LVRT and HVRT) requirements, an adaptive reactive current control scheme is investigated. In addition, a torque-oscillation suppression technique is designed to reduce the mechanism stress on turbine systems caused by intensive voltage variations. Simulation and experiment studies demonstrate the feasibility and effectiveness of the proposed control scheme to enhance the fault ride-through (FRT) capability of DFIG-based wind turbines during violent changes in grid voltage.

      • SCIESCOPUSKCI등재

        Reactive Current Assignment and Control for DFIG Based Wind Turbines during Grid Voltage Sag and Swell Conditions

        Xu, Hailiang,Ma, Xiaojun,Sun, Dan The Korean Institute of Power Electronics 2015 JOURNAL OF POWER ELECTRONICS Vol.15 No.1

        This paper proposes a reactive current assignment and control strategy for a doubly-fed induction generator (DFIG) based wind-turbine generation system under generic grid voltage sag or swell conditions. The system's active and reactive power constrains during grid faults are investigated with both the grid- and rotor-side convertors (GSC and RSC) maximum ampere limits considered. To meet the latest grid codes, especially the low- and high-voltage ride-through (LVRT and HVRT) requirements, an adaptive reactive current control scheme is investigated. In addition, a torque-oscillation suppression technique is designed to reduce the mechanism stress on turbine systems caused by intensive voltage variations. Simulation and experiment studies demonstrate the feasibility and effectiveness of the proposed control scheme to enhance the fault ride-through (FRT) capability of DFIG-based wind turbines during violent changes in grid voltage.

      • KCI등재

        Study on the Interaction of Compound Bonded Magnets

        Ying Chang,Nuo Ma,Xiaojun Yu,Fazeng Lian,Wei Li 한국자기학회 2004 Journal of Magnetics Vol.9 No.4

        The attempt for the addition of double-phase nanocomposite Nd₂Fe₁₄B/Fe₃B powders, respectively, into several RE₂Fe₁₄B (RE=Pr, Nd) powders with high magnetic properties was carried out. The powders were compounded and compressed to take shape bonded magnets. By means of investigating the variation of compound magnet Br, the interaction between magnetic powders was revealed. The result shows that not chemical just but physical interaction exists between elements. The compound effect of Nd₂Fe₁₄B/Fe₃B-ferrite bonded magnets was detailed studied. The functional relation was revealed between magnetic properties and ferrite content. That is Y = 5.42 x²-11.34 x + 6.62. The variation of iHc temperature coefficient β_(iHc) with ferrite content was investigated. Following the ferrite content increased, β_(iHc) and hirr were obviously decreased, compression-resistant strength was enhanced.

      • Numerical analysis of the seismic performance of RHC-PVCT short columns

        Xue, Jianyang,Zhao, Xiangbi,Ke, Xiaojun,Zhang, Fengliang,Ma, Linlin Techno-Press 2019 Advances in concrete construction Vol.8 No.4

        This paper presents the results of cyclic loading tests on new high-strength concrete (HC) short columns. The seismic performance and deformation capacity of three reinforced high-strength concrete filled Polyvinyl Chloride tube (RHC-PVCT) short columns and one reinforced high-strength concrete (RHC), under pseudo-static tests (PSTs) with vertical axial force was evaluated. The main design parameters of the columns in the tests were the axial compression ratio, confinement type, concrete strength, height-diameter ratio of PVCT. The failure modes, hysteretic curves, skeleton curves of short columns were presented and analyzed. Placing PVCT in the RHC column could be remarkably improved the ultimate strength and energy dissipation of columns. However, no fiber element models have been formulated for computing the seismic responses of RHC-PVCT columns with PVT tubes filled with high-strength concrete. Nonlinear finite element method (FEM) was conducted to predict seismic behaviors. Finite element models were verified through a comparison of FEM results with experimental results. A parametric study was then performed using validated FEM models to investigate the effect of several parameters on the mechanical properties of RHC-PVCT short columns. The parameters study indicated that the concrete strength and the ratio of diameter to height affected the seismic performance of RHC-PVCT short column significantly.

      • Ultrasensitive Near‐Infrared Raman Reporters for SERS‐Based In Vivo Cancer Detection

        Samanta, Animesh,Maiti, Kaustabh Kumar,Soh, Kiat‐,Seng,Liao, Xiaojun,Vendrell, Marc,Dinish, U. S.,Yun, Seong‐,Wook,Bhuvaneswari, Ramaswamy,Kim, Hyori,Rautela, Shashi,Chung, Junho,Olivo, Ma WILEY‐VCH Verlag 2011 Angewandte Chemie Vol.123 No.27

        <P><B>Zuverlässige Berichterstattung</B>: Das Screening einer 80‐teiligen Tricarbocyanin‐Bibliothek lieferte CyNAMLA‐381 als Nahinfrarot‐SERS‐Reporter mit guter Signalstabilität und höherer Empfindlichkeit als der Standard (SERS=oberflächenverstärkte Raman‐Spektroskopie). Durch Verkapselung von CyNAMLA‐381 an der Oberfläche von Gold‐Nanopartikeln und Konjugation mit Antikörpern wurden SERS‐Nanomarker mit ausgezeichneter Empfindlichkeit, Stabilität und Tumorspezifität in Xenograft‐Modellen erhalten (siehe Bild).</P>

      • KCI등재

        MALAT1 knockdown promoted cell viability and migration of LPS‑treated MG‑63 cells via sponging miR‑212

        Yong Zhang,Yuan Zhang,Kun Yang,Weizhong Guo,Xiaojun Ma,Xingming Ma,Zengliang Wang 한국유전학회 2021 Genes & Genomics Vol.43 No.5

        Background Most fractures could heal after treatment, around 5–10% of patients still develop delayed union and nonunion. Evidence has increasingly shown that abnormal expression of long noncoding RNAs is closely related to the occurrence and development of various diseases including fracture healing. However, evidence regarding the efect of MALAT1 on fracture healing remains limited. Objectives In this study, we attempt to explore the role of MALAT1 during the process of femoral neck fracture healing and elucidate the underlying mechanism of this disease. Methods We frst detect the expression of lncRNAs in serums from 3 pairs of patients with delayed femoral neck fracture healing and healthy volunteers using lncRNA microarray. And the expression of long noncoding RNA MALAT1 in serums and LPS-treated MG-63 cells was measured using qRT-PCR. CCK-8 assay, cell migration and qRT-PCR were applied to the role of MALAT1 knockdown in LPS-treated MG-63 cells. ELISA was used for the measurement of infammatory cytokines in serums of patients and healthy volunteers. The bioinformatics analysis and the rescue experiment were devoted to the underlying mechanism. Results MALAT1 expression was up-regulated in serum of patients with delayed union of femoral neck fracture. MALAT1 knockdown promoted cell viability and migration, reduced infammation in LPS-treated MG-63 cells. The bioinformatics analysis showed MALAT1 acts as a molecular sponge for miR-212. And SOX6 was a target of miR-212. Besides, MALAT1 knockdown suppressed SOX6 expression via targeting miR-212 in LPS-treated MG-63 cells. Conclusions These data suggest MALAT1 knockdown promoted the biological behavior of LPS-treated MG-63 cells via sponging miR-212, which may provide a new therapeutic avenue for delayed union of femoral neck fracture.

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