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- 저자 : Xiyu Song (검색결과 3 건)
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Xiyu Song,Aiqin Hou,Kongliang Xie,Tingli Hu 한국섬유공학회 2020 Fibers and polymers Vol.21 No.8
A series of novel bi-heterocyclic disperse dyes containing N-ethyl-3-cyano-4-methyl-6-hydroxy-2-pyridine groupwere synthesized. The structures of the bi-heterocyclic dyes were characterized by Fourier transform infrared spectroscopy(FT-IR), nuclear magnetic resonance spectroscopy (1H-NMR), UV-vis spectrophotometry, and elemental analysis. Thedistinct spectral behavior and solvatochromic effect of the dyes were discussed. The dyeing properties of the dyes forpolyethylene terephthalate (PET) fabric were investigated. Novel bi-heterocyclic disperse dyes had higher molar absorptioncoefficient, good color strength, and excellent fastness properties, especially light fastness. The bi-heterocyclic disperse dyeshave potential research value in the development of high light resistant dyes and functional dyes.
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Anti-Reactive Jamming Technology Based on Jamming Utilization
Xin Liu,Mingcong Zeng,Yarong Liu,Mei Wang,Xiyu Song 한국인터넷정보학회 2023 KSII Transactions on Internet and Information Syst Vol.17 No.10
Since the existing anti-jamming methods, including intelligent methods, have difficulty against high-speed reactive jamming, we studied a new methodology for jamming utilization instead of avoiding jamming. Different from the existing jamming utilization techniques that harvest energy from the jamming signal as a power supply, our proposed method can take the jamming signal as a favorable factor for frequency detection. Specifically, we design an intelligent differential frequency hopping communication framework (IDFH), which contains two stages of training and communication. We first adopt supervised learning to get the jamming rule during the training stage when the synchronizing sequence is sent. And then, we utilize the jamming rule to improve the frequency detection during the communication stage when the real payload is sent. Simulation results show that the proposed method successfully combated high-speed reactive jamming with different parameters. And the communication performance increases as the power of the jamming signal increase, hence the jamming signal can help users communicate in a low signal-to-noise ratio (SNR) environment.
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Ran Chu,Penglin Liu,Jingying Chen,Xiaodong Cheng,Kezhen Li,Yanci Che,Jianliu Wang,Li Li,Xi Zhang,Shu Yao,Li Song,Ying Zhao,Changzhen Huang,Ying Xue,Xiyu Pan,Junting Li,Zhongshao Chen,Jie Jiang,Beihua 대한부인종양학회 2023 Journal of Gynecologic Oncology Vol.34 No.2
Objective: To evaluate the impact of bleomycin/etoposide/cisplatin (BEP) and paclitaxel/carboplatin (PC) chemotherapy regimens on the fertility and prognostic outcomes in malignant ovarian germ cell tumor (MOGCT) patients who underwent fertility-sparing surgery (FSS). Methods: A propensity score matching algorithm was performed between the BEP and PC groups. The χ2 test and the Kaplan-Meier method were used to compare the fertility outcome, disease-free survival (DFS) and overall survival (OS). The Cox proportional hazards regression analysis was used to identify risk factor of DFS. Results: We included 213 patients, 185 (86.9%) underwent BEP chemotherapy, and 28 (13.1%) underwent PC chemotherapy. The median age was 22 years (range, 8–44 years), and the median follow-up period was 63 months (range, 2–191 months). Fifty-one (29.3%) patients had a pregnancy plan, and 35 (85.4%) delivered successfully. In the before and after propensity score matching cohorts, there were no significant differences in spontaneous abortion, selective termination of pregnancy, during-pregnancy status, and live birth between the BEP and PC groups (p>0.05). Fourteen (6.6%) patients experienced recurrence, including 11 (5.9%) in the BEP group and 3 (10.7%) in the PC group. Four (1.9%) patients in the BEP group died. Kaplan-Meier analysis revealed no significant differences in DFS (p=0.328) and OS (p=0.446) between the BEP and PC groups, and the same survival results were observed in the after matching cohort. Conclusion: The PC regimen is as safe as the BEP regimen for MOGCT patients with fertility preservation treatment, and no differences were observed in fertility and clinical prognosis.
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