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      • SCIESCOPUSKCI등재

        Chaos and Predictable Time-Scale of the Brown Planthopper Nilaparvata Lugens(St${\aa}$l) Occurrence System

        Ma,,Fei,Ding,,Zongze,Cheng,,Xianian Korean Society of Applied Entomology 2001 Journal of Asia-Pacific Entomology Vol.4 No.1

        The brown planthopper (BPH: Nilaparvata lugens(St${\aa}$l) occurrence time series data from June to November of 1986-1998 in Taihu Lake area, Jingsu province, China, were used to calculate correlation dimension ($D_2$(m)) and the second-order Renyientropy($k_2$). Based on the methods of the approximation Kolmogorov's entropy and phase space extension, the average predictable time scale of BPH occurrence system was computed. The results indicate that the BPH occurrence system is a chaotic system with fractal dimension ($D_2$(m)) form 4.34 to 4.43 and saturation embedding dimension $m_c =10$. And it could be inferred that the BPH occurrence evolution would be described by 5-10 steps required by the development of these chaotic attractors in the multi-dimensional phase space. The average predictable time scale is about 114.0-253.2 days, and the really predictable time scale of 79.0-175.5 days resulted from the e-folding expansion of trajectories in phase space. The effect of the lag time $\tau$ was examined during the continuation of phase space. And it was found that ($D_2$(m)) is convergent with respect to $\tau$. While the BPH occurrence time series data every four days were analyzed by the continuation of phase space with $\tau$=5, the coordinate components was independent of each other, and the dynamically characteristic quantity of the system was stable and reliable.

      • 중국 현지 중소기업 은행의 운영 리스크 분석: 허저시 농촌 상업 은행을 중심으로

        ( Ma Fei ) 인문사회과학예술융합학회 2020 인문사회과학예술융합학회지 Vol.4 No.2

        For a long time, China's commercial banks have mainly carried out traditional businesses such as deposits and loans. At this stage, China's economic environment has undergone major changes. The commercial banks that manage traditional businesses can obtain less and less income, and the development space is gradually shrinking. The financial reform has been comprehensively promoted, the economic environment has become more and more open, and the rising of foreign banks and private banks has made the competition faced by commercial banks in China more fierce. The traditional business model of commercial banks has been greatly challenged and risk. In China, rural commercial banks mainly serve farmers. Their main business is extensive and involves agricultural issues. Unlike other banks, rural commercial banks are the main force for financial support for agricultural development. Therefore, the management of rural commercial banks is particularly important. On this basis, this paper selects Heze Rural Commercial Bank as the research object, analyzes the existing operational risks, and proposes effective improvement measures and suggestions.

      • KCI등재

        Sox12 Is a Cancer Stem-Like Cell Marker in Hepatocellular Carcinoma

        Zou,,Song,Wang,,Chen,Liu,,Jiansheng,Wang,,Qun,Zhang,,Dongdong,Zhu,,Shengnan,Xu,,Shengyuan,Kang,,Mafei,He,,Shaozhong Korean Society for Molecular and Cellular Biology 2017 Molecules and cells Vol.40 No.11

        Recent studies on molecular carcinogenesis suggest that the chemo-resistance of some cancers is largely due to presence of cancer stem cells (CSCs), which affect the chemotherapy outcome for hepatocellular carcinoma (HCC). However, currently no consensus on a CSC phenotype in HCC has been obtained. Here, we examined Sox12 as a novel CSC marker in HCC. Sox12+ versus Sox12- cells were purified from HCC cell lines. The Sox12+ cells were compared with Sox12- HCC cells for tumor sphere formation, chemo-resistance, tumor formation after serial adoptive transplantations in nude mice, and the frequency of developing distal metastasis. We found that compared to Sox12- HCC cells, Sox12+ HCC cells generated significantly more tumor spheres in culture, were more chemo-resistant to cisplatin, were detected in circulation more frequently, and formed distal tumor more frequently. Moreover, Sox12 appeared to functionally contribute to the stemness of HCC cells. Thus, we conclude that Sox12 may be a novel marker for enriching CSCs in HCC.

      • KCI등재

        Sox12 Is a Cancer Stem-Like Cell Marker in Hepatocellular Carcinoma

        Song,Zou,Chen,Wang,Jiansheng,Liu,Qun,Wang,Dongdong,Zhang,Shengnan,Zhu,Shengyuan,Xu,Mafei,Kang,Shaozhong,He 한국분자세포생물학회 2017 Molecules and cells Vol.40 No.11

        Recent studies on molecular carcinogenesis suggest that the chemo-resistance of some cancers is largely due to presence of cancer stem cells (CSCs), which affect the chemotherapy outcome for hepatocellular carcinoma (HCC). However, currently no consensus on a CSC phenotype in HCC has been obtained. Here, we examined Sox12 as a novel CSC marker in HCC. Sox12+ versus Sox12- cells were purified from HCC cell lines. The Sox12+ cells were compared with Sox12- HCC cells for tumor sphere formation, chemo-resistance, tumor formation after serial adoptive transplantations in nude mice, and the frequency of developing distal metastasis. We found that compared to Sox12- HCC cells, Sox12+ HCC cells generated significantly more tumor spheres in culture, were more chemo-resistant to cisplatin, were detected in circulation more frequently, and formed distal tumor more frequently. Moreover, Sox12 ap-peared to functionally contribute to the stemness of HCC cells. Thus, we conclude that Sox12 may be a novel marker for enriching CSCs in HCC.

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