Elastodyamic analysis of torsion of shaft of revolution by line-loaded integral equation method

Yun, Tian Quan Techno-Press 1998 Structural Engineering and Mechanics, An Int'l Jou Vol.6 No.4

The dynamic response of an elastic torsion shaft of revolution is analysed by the Line-Loaded Integral Equation Method (LLIEM). A "Dynamic Point Ring Couple" (DPRC) is used as a fictitious fundamental load and is distributed in an elastic space along the axis of the shaft outside the shaft occupation. According to the boundary condition, our problem is reduced to a 1-D Fredholm integral equation of the first kind, which is simpler for solving than that of a 2-D singular integral equation of the same kind obtanied by Boundary Element Method (BEM), for steady periodically varied loading. Numerical example of a shaft with quadratic generator under sinusoidal type of torque is given. Formulas for stresses and dangerous frequency are mentioned.

Seismic behavior of composite walls with encased steel truss

Yun-tian Wu,Dao-yang Kang,Yi-ting Su,Yeong-Bin Yang 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.22 No.2

This paper studies the seismic behavior of reinforced concrete (RC) walls with encased cold-formed and thin-walled (CFTW) steel truss, which can be used as an alternative to the conventional RC walls or steel reinforced concrete (SRC) composite walls for high-rise buildings in high seismic regions. Seven one-fourth scaled RC wall specimens with encased CFTW steel truss were designed, manufactured and tested to failure under reversed cyclic lateral load and constant axial load. The test parameters were the axial load ratio, configuration and volumetric steel ratio of encased web brace. The behaviors of the test specimens, including damage formation, failure mode, hysteretic curves, stiffness degradation, ductility and energy dissipation, were examined. Test results indicate that the encased web braces can effectively improve the ductility and energy dissipation capacity of RC walls. The steel angles are more suitable to be used as the web brace than the latticed batten plates in enhancing the ductility and energy dissipation. Higher axial load ratio is beneficial to lateral load capacity, but can result in reduced ductility and energy dissipation capacity. A volumetric ratio about 0.25% of encased web brace is believed cost-effective in ensuring satisfactory seismic performance of RC walls. The axial load ratio should not exceed the maximum level, about 0.20 for the nominal value or about 0.50 for the design value. Numerical analyses were performed to predict the backbone curves of the specimens and calculation formula from the Chinese Code for Design of Composite Structures was used to predict the maximum lateral load capacity. The comparison shows good agreement between the test and predicted results.

6.25전쟁기 한·중 종군소설에서 드러난 국가의식 비교 연구

전지운 ( Tian Zhi-yun ) 인하대학교 한국학연구소 2019 한국학연구 Vol.0 No.55

올해 2019년은 한·중 양국에서 3.1동운과 5.4운동이 100주년을 맞이한 해이며 애국주의는 다시 뜨거운 화제로 부상되었다. 자고로 전쟁은 국가의식을 유발하는 데 아주 유력한 요소로 작용해 왔다. 종군소설이 전쟁 시기에 승전선전을 목표한 창작인 만큼 애국주의는 승전선전을 수행하는 데 필히 사용되는 담론방법이다. 그러나 ‘종군소설이라면 당연히 애국주의’ 라는 보편적 기존인식에 그동안 애국의식은 종군소설 연구에서 지나치게 간과된 실황이었다. 근대 애국 역사 흐름의 일환으로서 이 시기 애국의식의 특수성과 중요성은 충분히 검토될 만하지만 그간 이루어져 온 기존 논의에서 이를 빠뜨린 점을 감안할 때 아쉬움이라고 본다. 그래서 본고는 종군소설 중의 애국의식을 연구대상으로 삼기로 하고 애국의식의 시대적 특성을 규명하고자 한다. 이에 본고에서는 6.25전쟁기에 나름의 특수성을 가진 애국의식과 그 소설적 담론방법에 대해 탐구할 것이다. 아울러, 두 나라의 애국의식을 비교하면서 애국의식에 나타난 공통점과 차이점에 대해 고찰할 것이며 이러한 이동점(異同點)이 나타난 문화적 요인도 함께 탐구하고자 한다. 이를 통해 6.25전쟁기 소설담론에서 드러난 애국의식의 나름 특성을 밝히고 그 문학사적 의의를 탐색할 수 있기를 기대한다. 이에, 본고에서 총 5장으로 나눠본다. 1장 서론부분에서는 전쟁과 애국의식의 동원 및 종군문인들의 애국의식에 대해 논의했다. 2장에서는 종군소설에서 애국의식이 형성된 그 시기의 이데올로기적 국가의식에 대해 선제적으로 탐구한다. 이어서, 3장에서는 양국 종군소설에서 애국의식의 형태적 양상, 즉 이념적 애국의식과 실천적 애국의식으로 나눠 비교해 보며, 4장에서는 이러한 애국의식의 존재론적 가치와 특성에 대해 검토할 것이다. 마지막으로는 6.25전쟁기에 애국의식이 근대 애국의식 발전 흐름에서 지니는 나름의 특수성과 문학사적 의의에 대해 규명한다. This year 2019 marks the 100th anniversary of the 3.1 moment and 5.4 movement in both south Korea and China, and patriotism has become a hot topic again. Traditionally, war has been a very useful factor in stimulating national consciousness. The war novel was created for the propaganda during the war, and patriotism is a necessary discourse used in the works. However, patriotic consciousness was often overlooked in the study of war novels in the opinion that war novels are of course patriotism. This paper intends to study patriotic consciousness among the war novels that have been overlooked in the discussion. Through this, we will explore patriotic consciousness and its novel discourse method that have specificity in the Korean War. In addition, we will be able to explore the cultural factors that made the difference by comparing patriotic consciousness between the two countries. In this paper, I will divide it into five chapters. In the first chapter, we discussed the mobilization of war and patriotism and the patriotism of the civil servants(war writers). Chapter 2 preemptively explores the ideological state consciousness of the period when patriotic consciousness was formed in war novels. Subsequently, Chapter 3 compares the morphological aspects of patriotic consciousness in the two national novels, that is ideological and practical patriotic consciousness, and Chapter 4 examines the ontological value and characteristics of patriotic consciousness. Lastly, this paper examines the specificity and literary significance of patriotic consciousness in the development of modern patriotic consciousness during the Korean War.

PKM2 Regulates Hepatocellular Carcinoma Cell Epithelial-mesenchymal Transition and Migration upon EGFR Activation

Fan, Fang-Tian,Shen, Cun-Si,Tao, Li,Tian, Chao,Liu, Zhao-Guo,Zhu, Zhi-Jie,Liu, Yu-Ping,Pei, Chang-Song,Wu, Hong-Yan,Zhang, Lei,Wang, Ai-Yun,Zheng, Shi-Zhong,Huang, Shi-Le,Lu, Yin Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.5

Pyruvate kinase isozyme type M2 (PKM2) was first found in hepatocellular carcinoma (HCC), and its expression has been thought to correlate with prognosis. A large number of studies have demonstrated that epithelial-mesenchymal transition (EMT) is a crucial event in hepatocellular carcinoma (HCC) and associated metastasis, resulting in enhanced malignancy of HCC. However, the roles of PKM2 in HCC EMT and metastasis remain largely unknown. The present study aimed to determine the effects of PKM2 in EGF-induced HCC EMT and elucidate the molecular mechanisms in vitro. Our results showed that EGF promoted EMT in HCC cell lines as evidenced by altered morphology, expression of EMT-associated markers, and enhanced invasion capacity. Furthermore, the present study also revealed that nuclear translocation of PKM2, which is regulated by the ERK pathway, regulated ${\beta}$-catenin-TCF/LEF-1 transcriptional activity and associated EMT in HCC cell lines. These discoveries provide evidence of novel roles of PKM2 in the progression of HCC and potential therapeutic target for advanced cases.

중공체를 적용한 PCM 충전형 내화 Hybrid Floor 시스템의 열전달 특성

티안 윈치(Tian, Yun-Qi),박민재(Park, Min-Jae),김별이(Kim, Beoul-Yi),주영규(Ju, Young K.) 대한건축학회 2018 대한건축학회 학술발표대회 논문집 Vol.38 No.2

Staged Improvement in Awareness of Disease for Elderly Cancer Patients in Southern China

Li, Xing,Dong, Min,Wen, Jing-Yun,Wei, Li,Ma, Xiao-Kun,Xing, Yan-Fang,Deng, Yun,Chen, Zhan-Hong,Chen, Jie,Ruan, Dan-Yun,Lin, Ze-Xiao,Wang, Tian-Tian,Wu, Dong-Hao,Liu, Xu,Hu, Hai-Tao,Lin, Jia-Yu,Li, Zhu Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.15

Background: In mainland China, awareness of disease of elderly cancer patients largely relies on the patients' families. We developed a staged procedure to improve their awareness of disease. Materials and Methods: Participants were 224 elderly cancer patients from 9 leading hospitals across Southern China. A questionnaire was given to the oncologists in charge of each patient to evaluate the interaction between family and patients, patient awareness of their disease and participation in medical decision-making. After first cycles of treatment, increased information of disease was given to patients with cooperation of the family. Then patient awareness of their disease and participation in medical decision-making was documented. Results: Among the 224 cancer elderly patients, 26 (11.6%) made decisions by themselves and 125 (55.8%) delegated their rights of decision-making to their family. Subordinate family members tended to play a passive role in decision-making significantly. Patients participating more in medical decision-making tended to know more about their disease. However, in contrast to the awareness of disease, patient awareness of violation of medical recommendations was reversely associated with their participation in medical decision-making. Improvement in awareness of diagnosis, stages and prognosis was achieved in about 20% elderly cancer patients. About 5% participated more actively in medical decision-making. Conclusions: Chinese elderly cancer patient awareness of disease and participation in medical decision-making is limited and relies on their family status. The staged procedure we developed to improve patient awareness of disease proved effective.

Efficacy of Prophylactic Entecavir for Hepatitis B Virus-Related Hepatocellular Carcinoma Receiving Transcatheter Arterial Chemoembolization

Li, Xing,Zhong, Xiang,Chen, Zhan-Hong,Wang, Tian-Tian,Ma, Xiao-Kun,Xing, Yan-Fang,Wu, Dong-Hao,Dong, Min,Chen, Jie,Ruan, Dan-Yun,Lin, Ze-Xiao,Wen, Jing-Yun,Wei, Li,Wu, Xiang-Yuan,Lin, Qu Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.18

Background and Aims: Hepatitis B virus (HBV) reactivation was reported to be induced by transcatheter arterial chemoembolization (TACE) in HBV-related hepatocellular carcinonma (HCC) patients with a high incidence. The effective strategy to reduce hepatitis flares due to HBV reactivation in this specific group of patients was limited to lamivudine. This retrospective study was aimed to investigate the efficacy of prophylactic entecavir in HCC patients receiving TACE. Methods: A consecutive series of 191 HBV-related HCC patients receiving TACE were analyzed including 44 patients received prophylactic entecavir. Virologic events, defined as an increase in serum HBV DNA level to more than 1 log10 copies/ml higher than nadir the level, and hepatitis flares due to HBV reactivation were the main endpoints. Results: Patients with or without prophylactic were similar in host factors and the majorities of characteristics regarding to tumor factors, HBV status, liver function and LMR. Notably, cycles of TACE were parallel between the groups. Ten (22.7%) patients receiving prophylactic entecavir reached virologic response. The patients receiving prophylactic entecavir presented significantly reduced virologic events (6.8% vs 54.4%, p=0.000) and hepatitis flares due to HBV reactivation (0.0% vs 11.6%, p=0.039) compared with patients without prophylaxis. Kaplan-Meier analysis illustrated that the patients in the entecavir group presented significantly improved virologic events free survival (p=0.000) and hepatitis flare free survival (p=0.017). Female and Eastern Cooperative Oncology Group (ECOG) performance status 2 was the only significant predictors for virological events in patients without prophylactic antiviral. Rescue antiviral therapy did not reduce the incidence of hepatitis flares due to HBV reactivation. Conclusion: Prophylactic entecavir presented promising efficacy in HBV-related cancer patients receiving TACE. Lower performance status and female gender might be the predictors for HBV reactivation in these patients.

Hepatitis B Virus DNA Negativity Acts as a Favorable Prognostic Factor in Hepatocellular Carcinoma Patients

Li, Xing,Zhong, Xiang,Chen, Zhan-Hong,Xing, Yan-Fang,Wu, Dong-Hao,Chen, Jie,Ma, Xiao-Kun,Lin, Qu,Wen, Jing-Yun,Wei, Li,Wang, Tian-Tian,Ruan, Dan-Yun,Lin, Ze-Xiao,Wu, Xiang-Yuan,Dong, Min Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.22

Background: This retrospective study was aimed to investigate the efficacy of prophylactic agents in hepatocellular carcinoma (HCC) patients receiving TACE and compare the difference between lamivudine and entecavir. Materials and Methods: A consecutive series of 203 HBV-related HCC patients receiving TACE were analyzed including 91 patients given prophylactic agents. Virologic events, defined as an increase in serum HBV DNA level to more than 1 log10 IU/ml higher than the nadir level, hepatitis flares due to HBV reactivation and progression free survival (PFS) were the main endpoints. Results: Some 48 (69.6%) reached virologic response. Prophylaxis significantly reduced virologic events (8.8% vs 58.0%, p=0.000) and hepatitis flares (1.1% vs 13.4%, p=0.001). Patients presenting undetectable HBV DNA levels displayed a significantly improved PFS as compared to those who never achieved undetectable HBV DNA. Prophylaxis and e-antigen positivity were the only significant variables associated with virologic events. In addition, prophylaxis was the only independent protective factor for hepatitis flares. Liver cirrhosis, more cycles of TACE, HBV DNA negativity, a lower Cancer of the Liver Italian Program score, non-metastasis and no hepatitis flares were protective factors for PFS. Prophylactic lamivudine demonstrated similar efficacy as entecavir. Conclusions: Prophylactic agents are efficacious for prevention of HBV reactivation in HCC patients receiving TACE. Achievement of undetectable HBV DNA levels displayed a significant capability in improving PFS. Moreover, persistent tumor residual lesions, positive HBV DNA and hepatitis B flares might be causes of tumor progression in these patients.

COMPUTER AIDED ANALYSIS OF LINEAR SYSTEMS VIA PIECEWISE QUADRATIC POLYNOMIAL FUNCTIONS

Yun, Wang Ting,Xiang, Li Bin,Wei, Tian Ke,Rong, Shi Guo 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1

This paper presents a new polynomial function that is piecewise quadratic polynomial function. With the treatment of linear time-invariant systems, the integration operational matrices are developed. By applying these operational matrices, the dynamic equations are transformed into a set of algebraic equations. A recursive algorithm is derived and this approach via computer aided analysis is verified to be right by a example.

A GENERAL ITERATIVE METHOD BASED ON THE HYBRID STEEPEST DESCENT SCHEME FOR VARIATIONAL INCLUSIONS, EQUILIBRIUM PROBLEMS

Tian, Ming,Lan, Yun Di The Korean Society for Computational and Applied M 2011 Journal of applied mathematics & informatics Vol.29 No.3

To the best of our knowledge, it would probably be the first time in the literature that we clarify the relationship between Yamada's method and viscosity iteration correctly. We design iterative methods based on the hybrid steepest descent algorithms for solving variational inclusions, equilibrium problems. Our results unify, extend and improve the corresponding results given by many others.