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Jiang Xin,Yi Hao,Li Yuguo,Zhuo Fang,Wang Feng,Wang Zhenxiong 전력전자학회 2023 ICPE(ISPE)논문집 Vol.2023 No.-
Active damping is an effective method to suppress high frequency oscillation of LCL inverter. However, the digital control delay may introduce the right half plane poles into the control loop, which complicates the stability analysis and parameter design of the LCL inverter with active damping. Therefore, this paper proposed a loop gain reconfiguration method. With the proposed loop gain, the delay in the original loop gain denominator is cancelled to avoid the effect of right half plane poles on stability analysis. With the proposed loop gain, the analytic formula is derived to judge the stable range of the inverter. Based on the formula, the design method of the active damping gain and effect of delay and grid impedance on the stability are derived, which greatly simplifies the stability analysis and the parameter design of active damping.
A Novel Mutation p.L461P in KRT5 Causing Localized Epidermolysis Bullosa Simplex
( Xin Jiang ),( Yingyu Zhu ),( Huihui Sun ),( Feng Gu ) 대한피부과학회 2021 Annals of Dermatology Vol.33 No.1
Background: Epidermolysis bullosa (EB) is a rare genetic disease with widely different clinical manifestations, but the relationship between genotype and phenotype is not fully understood. In the present study, we recruited a Chinese family in which two members had been diagnosed with localized EB simplex (EBS), with clinical manifestation, including blisters and erosions on the soles of the feet since infancy. Objective: To identify and confirm the genetic variation in a Chinese family diagnosed as localized EBS. Methods: Our study included two patients, other healthy members of the family, and 100 normal controls. Genomic DNA samples were isolated from each participant, and then polymerase chain reaction (PCR) direct sequencing was performed. Results: The results of PCR direct sequencing revealed a novel heterozygous missense mutation in codon 461 of exon 7 of KRT5 (c.1382T>C), which led to an amino acid change (p.L461P) in the patients with EBS but was absent in unaffected family members and 100 unrelated control samples. Conclusion: The present study broadens the mutational spectrum of EBS, and this knowledge could be harnessed for prenatal screening, gene diagnosis, and gene therapy for localized EBS. (Ann Dermatol 33(1) 11∼17, 2021)
Xin Liu,Yichen Jiang,Yinghui Zhang,Mingzheng Yu,Hongjun Jiang,Jianhong Xu,Jianrong Shi 한국미생물학회 2019 The journal of microbiology Vol.57 No.8
Dihydroxyacid dehydratase (DHAD), encoded by ILV3, catalyses the third step in the biosynthetic pathway of branchedchain amino acids (BCAAs), which include isoleucine (Ile), leucine (Leu), and valine (Val). Enzymes involved in BCAA biosynthesis exist in bacteria, plants, and fungi but not in mammals and are therefore attractive targets for antimicrobial or herbicide development. In this study, three paralogous ILV3 genes (FgILV3A, FgILV3B, and FgILV3C) were identified in the genome of Fusarium graminearum, the causal agent of Fusarium head blight (FHB). Deletion of FgILV3A alone or combined with FgILV3B or FgILV3C indicated an important role for FgILV3A in BCAA biosynthesis. FgILV3A deletion mutants lost the ability to grow on medium lacking amino acids. Exogenous supplementation of 1 mM Ile and Val rescued the auxotrophy of ΔFgIlv3A, though 5 mM was required to recover the growth defects in ΔFgIlv3AB and ΔFgIlv3AC strains, indicating that FgIlv3b and FgIlv3c exhibit redundant but accessory roles with FgIlv3a in BCAA biosynthesis. The auxotrophy of ΔFgIlv3A resulted in pleiotropic defects in aerial hyphal growth, in conidial formation and germination, and in aurofusarin accumulation. In addition, the mutants showed reduced virulence and deoxynivalenol production. Overall, our study demonstrates that FgIlv3a is crucial for BCAA biosynthesis in F. graminearum and a candidate fungicide target for FHB management.
Effect of Externality in Multiplex Networks on One-layer Synchronization
Xin Jiang,Meng Li,Zhiming Zheng,Yifang Ma,Lili Ma 한국물리학회 2015 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.66 No.11
Synchronization phenomenon plays an important role in the dynamic process on complex networks. In this letter, we consider synchronization under multiplex structures and explore the effect of external parts on the multilayered Kuramoto model with positive correlation between frequencies and degree. We show that large and strong mixing parts of the external layer may put off synchronization while the coupling strength of external layers has an accelerating, but limited, influence on synchronization. In particular, an explosive synchronization can be obtained by weakening the co-evolution coupling strength. The transition tends to be smooth when the co-evolution coupling strength increases. Our findings indicate that externality from multiplex networks, especially the mixing parts, and the co-evolution coupling strength should be of importance for synchronization on one certain layer.
Jiang, Jian-Xin,Zhang, Na,Liu, Zhong-Min,Wang, Yan-Ying Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.18
Background: Colorectal cancer (CRC) is a major cause of cancer-related death and cancer-related incidence worldwide. The potential of microRNA-21 (miR-21) as a biomarker for CRC detection has been studied in several studies. However, the results were inconsistent. Therefore, we conducted the present meta-analysis to systematically assess the diagnostic value of miR-21 for CRC. Materials and Methods: Using a random-effect model, the pooled sensitivity (SEN), specificity (SPE), positive likelihood ratio (PLR), negative likelihood ratio (NLR), and diagnostic odds ratio (DOR) were calculated to evaluate the diagnostic performance of miR-21 for CRC. A summary receiver operating characteristic (SROC) curve and an area under the curve (AUC) were also generated to assess the diagnosis accuracy of miR-21 for CRC. Q test and I2 statistics were used to assess between-study heterogeneity. Publication bias was evaluated by the Deeks' funnel plot asymmetry test. Results: A total of 986 CRC patients and 702 matched healthy controls from 8 studies were involved in the meta-analysis. The pooled results for SEN, SPE, PLR, NLR, DOR, and AUC were 57% (95%CI: 39%-74%), 87% (95%CI: 78%-93%), 4.4 (95%CI: 2.4-8.0), 0.49 (95%CI: 0.32-0.74), 9 (95%CI: 4-22), and 0.83 (95%CI: 0.79-0.86), respectively. Subgroup analyses further suggested that blood-based studies showed a better diagnostic accuracy compared with feces-based studies, indicating that blood may be a better matrix for miR-21 assay and CRC detection. Conclusions: Our findings suggest that miR-21 has a potential diagnostic value for CRC with a moderate level of overall diagnostic accuracy. Hence, it could be used as auxiliary means for the initial screening of CRC and avoid unnecessary colonoscopy, which is an invasive and expensive procedure.
Jiang Xin,Yi Hao,Li Yuguo,Zhuo Fang,Wang Feng,Wang Zhenxiong 전력전자학회 2023 ICPE(ISPE)논문집 Vol.2023 No.-
This paper analyzes the stability of digitally dual-loop voltage-controlled inverters with consideration of grid impedance. It is revealed that both the digital delay and controller affect the system stability through adjusting the phase at the resonant frequency of the LCL filter. Then an optimal control for inner current loop is proposed to deal with different switching frequencies. Through tunning the feedback gain of inner current loop, the control scheme can cope with different switching frequencies or delays to keep system stable. Then the stable regions presented as the value range of current feedback gain are derived. Simulation and experiment validate the stability analysis and effectiveness of the proposed control.
An Optimal Inspection Policy for Protection Devices of Electronic Equipment Using Delay Time Model
Jiang Xin-liang,Zhao Jian-min,Li Zhi-wei 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.8
In order to reduce or eliminate the consequences of the electronic equipment malfunction, some important electronic equipment were installed protection devices. Failures of protection devices are of hidden feature, and can only be found by inspections. Protection device failing to system malfunctioning has a delay characteristic. According to this delay characteristic, an inspection policy was proposed based on delay time model. An inspection model was developed to minimize the average cost per unit time with constraint of availability. Based on the model, optimal inspection interval can be determined to meet the objective of the opti
Batch Auditing for Multi-client Dynamic Data in Multi-cloud Storage
Xin Liu,Yujia Jiang 보안공학연구지원센터 2014 International Journal of Security and Its Applicat Vol.8 No.6
Cloud storage introduces many challenges due to the security and integrity threats toward user’s outsourced data. Many auditing protocols have been proposed, but the majority of them could only serve in single cloud environment. This paper proposes an efficient auditing protocol, which supports batch auditing for multiple data files in multi-cloud environment. By utilizing the bilinear map, the proposed protocol achieves full stateless and transparent verification. By constructing a Merkle Hash Tree, the proposed protocol can resist the replace attack and support dynamic operation of data. In addition, our protocol protects the position information of the data blocks by generating fake data blocks to confuse the organizer. The performance analysis demonstrates the efficiency of the protocol.