중국 조선족무용의 사(史)적 흐름 고찰: 연변 조선족무용의 발전양상을 중심으로

김선화 ( Jin¸ Xianhua ),이미령 ( Li¸ Meiling ) 무용역사기록학회 2021 무용역사기록학 Vol.60 No.-

본 논문은 중국 조선족무용의 사적 흐름의 고찰을 논제로 신중국 건국이후 연변지역 조선족무용의 발전양상을 고찰하는데 목적을 두었다. 조선족무용은 지난 백여 년간 중국 연변의 지리적, 인문적 환경속에서 다양한 변화와 발전을 거듭해 왔다. 연변지역은 중국 조선족무용이 시작된 곳이다. 이주 초기부터 1949년까지 조선족은 연변지역에서 삶을 개척하면서 노동생활에 결부한 지역적인 특색을 지닌 민간·민속무용형식을 기반으로 조선족무용을 구축하였다. 이어 1949년 신중국의 성립과 1978년의 개혁개방 등 역사적인 시기를 겪으면서 조선족의 무용예술을 계승하는 동시에 꾸준히 모색하고 발전시켜왔다. 조선족무용은 국제적인 무용 교류의 장이 펼쳐지면서 외부 예술에 대한 인지, 수용, 통합의 과정을 거쳤으며, 이러한 새로운 변화와 발전의 기회를 맞게 되면서 독특한 성격을 띠는 조선족무용예술을 더욱 풍부하게 발전시킬 수 있었다. 본 논문에서는 신중국 건국이후 연변 조선족무용의 발전양상을 살펴보기 위해 우선 조선족과 조선족무용에 대한 개념을 짚어 보았다. 이어 신중국 건국이후 연변 조선족무용의 발전양상을 첫째, 조선족무용의 발굴 및 창작, 둘째, 조선족 무용교육의 발전, 셋째, 조선족 대중무용의 전개 세 방면으로 나누어 살펴보았다. 건국이후 연변 조선족무용의 변천과정에 나타난 특징은 다음과 같다. 첫째, 건국이후 연변 조선족무용은 대체적으로 민간 지역사회의 무용발전과 긴밀히 연결되어 있다. 둘째, 연변에서는 조선족무용의 계승과 전파를 위해 무용교육체계의 설립과 조선족무용 인재양성을 목표로 추진하였다. 셋째, 대중으로부터 전파되고 계승이 된 민간에서의 무용문화가 예술단체와 예술인들의 손을 거쳐 무대화되고 전파가 되면서 다시금 대중화를 이루게 되었다. The purpose of this research is to examine the historical development of the Korean-Chinese (ethnic Koreans in China) dance in China, and to examine the developmental aspects of the Korean-Chinese dance in Yanbian after the founding of the People’s Republic of China. This research first defines the concept of the Korean-Chinese (ethnic Koreans in China) and Korean-Chinese dance. The Yanbian Korean-Chinese dance’s developmental aspects are divided in three stages: the Discovery and Creation of Korean-Chinese dance, the Development of Korean-Chinese dance, and the prevalence of Korean-Chinese dance. The characteristics that appear in the Yanbian Korean-Chinese dance’s development process is as follows. First, after the founding of the People’s Republic of China, the Korean-Chinese dance was closely related to the dance development of the civilian local community. Second, in order to transmit and spread the Korean-Chinese dance in Yanbian, an established education and training system for Korean-Chinese dancers was required. Third, the dancing culture that was publically spread and transmitted, had moved on to performance stages by performers and was once again spread to earn its popularity.

Development of a Computational Fluid Dynamics Model for Scaling-up Ambr Bioreactors

Xianhua Li,Kara Scott,William J. Kelly,Zuyi Huang 한국생물공학회 2018 Biotechnology and Bioprocess Engineering Vol.23 No.6

It is known that process scaling-up has always been a challenge in biopharmaceutical and food industry. In recent years, newly emerging microscale bioreactors like Ambr15 and Ambr250 have attracted significant attention for that they can provide high throughput and accelerate upstream process development. In this work, we developed the first multiphase Computational Fluid Dynamics (CFD) model for an in-depth characterization of Ambr bioreactor systems. A number of advanced computational methods, including Reynolds stress turbulence model, population balance model, multiple reference frame (MRF), sliding mesh (SM) and user defined functions (UDFs), were integrated for the first time to systematically study the gas-liquid mixing in Ambr250 bioreactor. We provided detailed comparison between MRF and SM method, demonstrated the limitation of MRF for predicting bubble distribution in asymmetric reactors. Characteristics of hydrodynamics, mass transfer, turbulent dissipation and bubble size distribution were predicted from our CFD models and validated by existing experimental data for a variety of operating conditions for both the Ambr15 and Ambr250 bioreactors. The predicted kLa value ranges are 0.18 – 7.90 h-1 and 2.15 – 11.52 h-1 for Ambr250 and Ambr15, respectively. This work thus provides a superior framework for the computational modeling of microscale stirred bioreactors.

Facile Synthesis of Hierarchical CoMn2O4 Microspheres with Porous and Micro-/Nanostructural Morphology as Anode Electrodes for Lithium-Ion Batteries

Yana Li,Xianhua Hou,Yajie Li,Qiang Ru,Shaofeng Wang,Shejun Hu,Kwok-ho Lam 대한금속·재료학회 2017 ELECTRONIC MATERIALS LETTERS Vol.13 No.5

Hierarchical CoMn2O4 microspheres assembled bynanoparticles have been successfully synthesized by afacile hydrothermal method and a subsequent annealingtreatment. XRD detection indicate the crystal structure. SEM and TEM results reveal the 3-dimensional porousand micro-/nanostructural microsphere assembled bynanoparticles with a size of 20-100 nm. The CoMn2O4electrode show initial specific discharge capacity ofapproximately 1546 mAh/g at the current rates 100 mA/gwith a coulombic efficiency of 66.7% and remarkablespecific capacities (1029-485 mAh/g) at various currentrates (100-2800 mA/g).

중국 신탁형 자산유동화에 대한 법적 연구

이선화 ( Li Xianhua ),도시기 ( Tao Shiqi ) 단국대학교 법학연구소 2021 법학논총 Vol.45 No.2

자산유동화는 효과적인 융자도구로서 중국의 신속한 경제발전 요구에 부응하였을 뿐만 아니라 중국 자본시장의 운영에 적극적인 역할을 일으켰다. 이론적으로 볼 때 자산유동화는 회사형, 계약형, 조합형의 형태로 나누어지나, 중국의 회사법과동업기업법의 규정상의 제한으로 중국에서 사실상 신탁형 자산유동화가 보편적으로 이용되고 있다. 현재까지 중국의 자산유동화에 대한 연구는 경제학적 측면에서 많이 다루어지고 법적인 연구는 상대적으로 부족하며, “실천이 우선이고 법적 대응이 지연되는 상황이라고 볼 수 있다.”본 고에서는 현재 중국의 자산유동화와 관련한 입법상황을 정리한 기초 상에서 중국 신탁형 자산유동화법제의 문제점과 개선방안에 대하여 살펴보고자 한다. 첫째, 중국 자산유동화의 법적 규정에서 특수목적기구인 적격수탁자의 범위를 지속적으로 확대할 필요가 있다. 신탁형자산유동화업무를 운영할 수 있는 기구에 관하여 중국 신탁법상으로는 비교적 느슨한 규정을 하고 있지만, 중국의 금융감독기구인 은행보험감독위원회 및 증권감독위원회의 규정에 따르면 자산유동화업무에 대하여 비교적 높은 진입조건과 엄격한 인가절차를 두고 있으므로 이러한 규정들을 개정할 필요가 있다고 본다. 둘째, 현재 중국의 신탁형 자산유동화는 통일적인 등기제도를 두고 있지 않다. 또한 신탁법에 따르면 신탁의 대하여 성립요건주의를 취하고 있는데, 이에 따라 자산유동화실무 중에서 많은 문제점이 제기되고 있다. 따라서 외국의 입법례를 참조하여 대항요건주의 등기제도를 마련하고 입법을 통하여 신탁 등기기관·등기사항에 관하여 명확히 규정하고 등기기준·등기절차 등을 구체화 할 필요가 있다. 셋째, 현재 중국은 금융분야 대하여 분업감독관리를 실시하고 있는데 통합적인 금융감독기관과 금융감독입법이 공포되기 전까지는 중국 국무원에서 자산유동화의 감독관리에 관한 행정법규를 공포하여 은행보험감독위원회, 증권감독위원회의 감독권한을 조율하여 자산유동화에 대한 감독관리규정의 일치성을 확보할 필요가 있다고 본다. As a new financing tool, asset securitization has largely solved the strong demand for capital in China’s sustained and rapid economic development and improved the operational efficiency of the capital market. Theoretically, there are company-type, trust-type and partnership-type asset securitization models. However, due to the limitations of China’s corporate legal system and partnership legal system, trust-type asset securitization models are mostly adopted in practice. At present, most of the researches on trust asset securitization focus on economics, research on financial market and economic development, the research on legal system is relatively weak, and the legislative level of legal basis for guiding and standardizing asset securitization is not high. As a result, some problems have also arisen in practice. Generally speaking, it is in a situation of “practice first, law lags”. On the premise of combing the existing legislative system, this paper discusses the problems existing in the legal system of trust asset securitization and suggestions for improvement as the entry point. First of all, for the problem that the scope of qualified trustees of special purpose trust trustees is narrow, the CBRC should simplify the conditions and procedures for trust and investment companies to apply for the qualification of trust trustees for specific purposes, and continue to expand the scope of qualified trustees through legislation to allow fund management companies, insurance asset management companies and other institutions to engage in trust asset management business. Secondly, regarding the trust registration system in trust asset securitization, trust registration antagonism should be gradually adopted through legislation, the organs and matters of trust registration should be clarified through legislation, and the procedural issues of registration, such as review standards and process specifications, should be stipulated through the formulation of supporting laws and regulations. Finally, regarding the problems existing in the separate supervision of asset securitization in China, before the establishment of a unified financial supervision institution or the promulgation of financial integration legislation, the State Council should formulate administrative regulations to clearly stipulate the responsibilities, authorities and scope of supervision of different supervision departments. Let the existing regulatory authorities, such as the central bank, the China Insurance Regulatory Commission and the Securities Regulatory Commission, be independent of each other, coordinate and cooperate with each other, and give full play to their regulatory functions.

A Unified Formula for Calculation of Crack Width and Spacing in Reinforced Concrete Beams

Xianhua Yao,Junfeng Guan,Lei Zhang,Junyi Xi,Lielie Li 한국콘크리트학회 2021 International Journal of Concrete Structures and M Vol.15 No.6

Crack distribution and widths were experimentally examined in a series of reinforced concrete (RC) beams. Concretes of different strengths were used, and beams were reinforced with 600 MPa yield strength steel bars. The features of cracks, which need to be considered in the design, were determined by using statistical analysis of different crack patterns observed in RC beams. The methods for determining the depth of effective influence zone of 600 MPa steel bars in RC beams were experimentally obtained. Based on the experimental data obtained in this study and from the data on RC beams with 335-600 MPa yield strength steel bars from other studies, the applicability of different formulas for the determination of the maximum widths (provided in codes and by scholars) was analyzed. Methods for the calculation of average crack spacing and maximum crack widths in RC beams with steel bars of various yield strengths were proposed. A unified formula for the calculation of maximum crack width in such beams was also established. Highlights • Reinforced concrete beam cracking behavior was experimentally examined with a new type of seismic bar. • New methods for the calculation of average crack spacing and maximum crack width were presented. • A unified formula for the calculation of maximum crack width was proposed.

Distinct Dose-Dependent Association of Free Fatty Acids with Diabetes Development in Nonalcoholic Fatty Liver Disease Patients

Fuxi Li,Junzhao Ye,Yanhong Sun,Yansong Lin,Tingfeng Wu,Congxiang Shao,Qianqian Ma,Xianhua Liao,Shiting Feng,Bihui Zhong 대한당뇨병학회 2021 Diabetes and Metabolism Journal Vol.45 No.3

Background: Excessive delivery of free fatty acids (FFAs) to the liver promotes steatosis and insulin resistance (IR), with IR defined as reduced glucose uptake, glycogen synthesis and anti-lipolysis stimulated by normal insulin levels. Whether the associations between FFAs and diabetes development differ between patients with and without nonalcoholic fatty liver disease (NAFLD) remains unclear. Methods: Consecutive subjects (2,220 NAFLD subjects and 1,790 non-NAFLD subjects according to ultrasound imaging) were enrolled from the First Affiliated Hospital of Sun Yat-sen University between 2009 and 2019. The homeostasis model assessment of insulin resistance (HOMA-IR) was calculated. Results: There was an approximate J-shaped relationship between FFA levels and HOMA-IR in the NAFLD group. Higher FFA concentration quartiles were associated with higher risks of IR (odds ratio [OR], 9.24; 95% confidence interval [CI], 6.43 to 13.36), prediabetes (OR, 10.48; 95% CI, 5.66 to 19.39), and type 2 diabetes mellitus (T2DM; OR, 19.43; 95% CI, 12.75 to 29.81) in the NAFLD group but not in the non-NAFLD group. The cut-off points for the FFA levels increased in a stepwise manner in discriminating IR, prediabetes and T2DM (573, 697, and 715 μmol/L) in the NAFLD group but not in non-NAFLD individuals. Conclusion: A distinct dose-dependent relationship of FFA levels was found with IR, prediabetes and T2DM in NAFLD patients. Screening serum FFA levels in NAFLD patients would be valuable in preventing diabetes development.

Immunohistochemical demonstration of alteration of β-catenin during tumor metastasis by different mechanisms according to histology in lung cancer

XU, XIANHUA,KIM, JI EUN,SUN, PING-LI,YOO, SEOL BONG,KIM, HYOJIN,JIN, YAN,CHUNG, JIN-HAENG D.A. Spandidos 2015 Experimental and therapeutic medicine Vol.9 No.2

<P>The protein β-catenin exhibits a dual function in cells, by acting as a major structural component of cell-cell adherens junctions and as a central signaling molecule in the Wnt signaling pathway. However, how the regulation of β-catenin expression during tumor metastasis in non-small cell lung cancer (NSCLC) varies according to histological type remains unclear. To investigate the regulatory mechanism of β-catenin on tumor metastasis, the present study compared the expression of Wnt1, β-catenin and E-cadherin in 41 primary NSCLC tumors and their corresponding metastatic lesions by immunohistochemistry. Altered expression of β-catenin was more frequent in the metastatic tumors (34/41, 82.9%) than in the corresponding primary tumors (24/41, 58.5%; P<0.05). There were 12 cases [nine of adenocarcinoma (ADC) and three of squamous cell carcinoma (SqCC)] that revealed discordant β-catenin expression between the primary tumors and the corresponding metastatic lesions. Of these, 11 cases (11/12, 91.7%; nine ADCs and two SqCCs) demonstrated acquired β-catenin alterations in the metastatic lesions. Subgroup analysis of these nine ADCs revealed that six cases (6/9, 66.7%) were accompanied by E-cadherin loss but no Wnt1 overexpression. Subgroup analysis of the three SqCCs revealed discordant β-catenin expression. Two cases (2/3, 66.7%) demonstrated acquired β-catenin expression during metastatic progression with Wnt1 overexpression but no change in E-cadherin expression. One case of SqCC revealed normal β-catenin expression in the metastasis although the expression was aberrant in the primary tumor. The results of the present study revealed that the changes in β-catenin expression occurred during tumor metastasis by different mechanisms, depending on histological type. The alterations in β-catenin expression may be regulated by a cadherin-catenin system in ADCs with reduced membranous expression of E-cadherin, but mediated by Wnt1 overexpression in SqCCs with cytoplasmic or nuclear transition types.</P>

Endoscopic ultrasonography is useful for predicting perforation in the endoscopic resection of gastric submucosal tumors originating from the muscularis propria: a retrospective case-control study

Yi Lu,Xianhua Zhuo,Qinghua Zhong,Jiachen Sun,Chujun Li,Min Zhi 대한초음파의학회 2023 ULTRASONOGRAPHY Vol.42 No.1

Purpose: Models for predicting perforation during endoscopic resection (ER) of gastric submucosal tumors (SMTs) originating from the muscularis propria (MP) are rare. Therefore, this study was conducted to determine important parameters in endoscopic ultrasonography (EUS) images to predict perforation and to build predictive models. Methods: Consecutive patients with gastric SMTs originating from the MP who received ER from May 1, 2013 to January 15, 2021 were retrospectively reviewed. They were classified into case and control groups based on the presence of perforation. Logistic multivariate analysis was used to identify potential variables and build predictive models (models 1 and 2: with and without information on tumor pathology, respectively). Results: In total, 199 EUS procedures (194 patients) were finally chosen, with 99 procedures in the case group and 100 in the control group. The ratio of the inner distance to the outer distance (I/O ratio) was significantly larger in the case group than in the control group (median ratio, 2.20 vs. 1.53; P<0.001). Multivariate analysis showed that age (odds ratio [OR], 1.036 in model 1; OR, 1.046 in model 2), the I/O ratio (OR, 2.731 in model 1; OR, 2.372 in model 2), and the pathology of the tumors (OR, 10.977 for gastrointestinal stromal tumors; OR, 15.051 for others in model 1) were risk factors for perforation. The two models to predict perforation had areas under the curve of 0.836 (model 1) and 0.755 (model 2). Conclusion: EUS was useful in predicting perforation in ER for gastric SMTs originating from the MP. Two predictive models were developed.

High Incidence of EGFR Mutations in Korean Men Smokers with No Intratumoral Heterogeneity of Lung Adenocarcinomas: Correlation with Histologic Subtypes, EGFR/TTF-1 Expressions, and Clinical Features

Sun, Ping-Li,Seol, Hyesil,Lee, Hyun Ju,Yoo, Seol Bong,Kim, Hyojin,Xu, Xianhua,Jheon, Sanghoon,Lee, Choon-Taek,Lee, Jong-Suk,Chung, Jin-Haeng Elsevier 2012 Journal of thoracic oncology Vol.7 No.2

<P>Epidermal growth factor receptor (EGFR) mutation has been known to be associated with adenocarcinoma with bronchioloalveolar carcinoma (BAC; lepidic) feature. This study was aimed to characterize the frequency of EGFR mutations and their association with histologic subtypes in Korean nonsmall cell lung cancer (NSCLC) patients.</P>

Energy efficiency onboard hydraulic power for quadruped robot based on high-low double pumps supply

Zisen Hua,Zhiwei Zhang,Hui Chai,Yibin Li,Xianhua Li,Yaru Sun 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.9

This work presents a high energy efficiency onboard hydraulic system for quadruped robot. Firstly, based on the rhythmic motion and mechanical characteristics of leg joints, the energy supply mode that supplies low-pressure oil and high-pressure oil separately for the swing phase and supporting phase is used, and the switch between different oil circuits for each legs is implemented by two digital on-off valves. What’s more, to obtain the pressure dynamics characteristics and energy consumption model, the mathematical models is deduced, and the analysis results illustrates that a better rate response can be achieved by adjusting time offset reasonable properly. Finally, the simulations and experiments are conducted to prove that the proposed system shows better energy efficiency compared with that of single pump supply pressure system, meanwhile, the fast dynamic response and the high tracking accuracy are also maintained.