• 제목/요약/키워드: Mainland China

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Performance-based seismic analysis and design of code-exceeding tall buildings in Mainland China

  • Jiang, Huanjun;Lu, Xilin;Zhu, Jiejiang
    • Structural Engineering and Mechanics
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    • 제43권4호
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    • pp.545-560
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    • 2012
  • Design codes provide the minimum requirements for the design of code-compliant structures to ensure the safety of the life and property. As for code-exceeding buildings, the requirements for design are not sufficient and the approval of such structures is vague. In mainland China in recent years, a large number of code-exceeding tall buildings, whether their heights exceed the limit for the respective structure type or the extent of irregularity is violated, have been constructed. Performance-based seismic design (PBSD) approach has been highly recommended and become necessary to demonstrate the performance of code-exceeding tall buildings at least equivalent to code intent of safety. This paper proposes the general methodologies of performance-based seismic analysis and design of code-exceeding tall buildings in Mainland China. The PBSD approach proposed here includes selection of performance objectives, determination of design philosophy, establishment of design criteria for structural components and systems consistent with the desirable and transparent performance objectives, and seismic performance analysis and evaluation through extensive numerical analysis or further experimental study if necessary. The seismic analysis and design of 101-story Shanghai World Financial Center Tower is introduced as a typical engineering example where the PBSD approach is followed. The example demonstrates that the PBSD approach is an appropriate way to control efficiently the seismic damage on the structure and ensure the predictable and safe performance.

Epidemiological Features of Human Papillomavirus (HPV) Infection among Women Living in Mainland China

  • Li, Jing;Huang, Rong;Schmidt, Johannes E.;Qiao, You-Lin
    • Asian Pacific Journal of Cancer Prevention
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    • 제14권7호
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    • pp.4015-4023
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    • 2013
  • Cancer of the cervix is the third most common cancer in women worldwide, more than 85% of the cases occurring in developing countries such as China. In China, since a national cancer registry is already set up but with geographically limited data generated, the burden of cervical cancer is believed to be underestimated. High-risk human papillomavirus (HR-HPV) prevalence among women attending routine cervical cancer screening programs has been shown to correlate well with cervical cancer incidence rates based on independently obtained HPV prevalence data as well as findings for the worldwide cervical cancer burden. Therefore, reviewing data on HR-HPV prevalence in population-based screening studies and hospital-based case studies will be important in the context of better understanding the cervical cancer burden and for the evaluation of the potential impact of HPV vaccination in the country. With the advent of prophylactic vaccines, significant progress is likely to be made in cervical cancer prevention. This article reviews available data on the HPV epidemiology over a 12-year time period (2001-2012) in mainland China under different epidemiological aspects: by age group of study population, by ethnicity, by geographic area, as well as time period. The authors also review the potential acceptability of HPV vaccination among Chinese women.

홍콩 출신 감독 린차오셴(林超賢) 영화가 중국 주선율 영화에 미친 영향 (A Hong Kong Born Director's Chinese Theme Film : Changes and Influence of Lin Chaoxian's film)

  • 이라;문재철
    • 한국콘텐츠학회논문지
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    • 제22권9호
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    • pp.147-155
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    • 2022
  • 이 글은 홍콩 출신 감독 린차오셴(林超賢)이 중국의 주선율 영화에 어떤 변화를 가져왔는지, 그리고 이러한 변화에 영향을 미친 요소들을 분석하기 위한 것이다. 분석의 대상은 린차오셴(林超賢)의 영화 <오퍼레이션 메콩>(湄公河行動, 2016), <오퍼레이션 레드 씨>(紅海行動, 2018), <긴급구원>(緊急救援, 2020)이다. 린차오셴은 중국 대륙 감독들에 비해 정치적 부담이 크지 않아 상업영화의 모델을 이용해 주선율 영화를 만들고 홍콩영화의 요소를 주선율 영화에 최대한 활용하고 있다. 그 결과 주선율 영화의 이데올로기는 딱딱한 표현이 아니라 관객의 공감을 불러일으킬 수 있는 다원화된 가치를 보여준다. 사실적이고 복합적인 인물은 과거 고정 천편일률적이며 비현실적이었던 영웅의 이미지를 대체한다. 스펙터클한 액션 장면과 폭력적인 장면의 응용이 시각적 진풍경을 만들어낸다. 그 결과 주선율 영화는 더 높은 상업적 가치를 얻었다. 린차오센의 영화는 새롭게 변화하는 관객의 취향이 영화산업에서 중요한 요인임을 확인시켜주었으며 높아진 제작비와 더불어 민영영화사의 역할을 키우고 있다.

Research and practice of health monitoring for long-span bridges in the mainland of China

  • Li, Hui;Ou, Jinping;Zhang, Xigang;Pei, Minshan;Li, Na
    • Smart Structures and Systems
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    • 제15권3호
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    • pp.555-576
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    • 2015
  • The large number of long-span bridges constructed in China motivates the applications of structural health monitoring (SHM) technology. Many bridges have been equipped with sophisticated SHM systems in the mainland of China and in Hong Kong of China. Recently, SHM technology has been extended to field test systems. In this view, SHM can serve as a tool to develop the methods of life-cycle performance design, evaluation, maintenance and management of bridges; to develop new structural analysis methods through validation and feedback from SHM results; and to understand the behavior of bridges under natural and man-made disasters, rapidly assess the damage and loss of structures over large regions after disasters, e.g., earthquake, typhoon, flood, etc. It is hoped that combining analytical methods, numerical simulation, small-scale tests and accelerated durability tests with SHM could become the main engine driving the development of bridge engineering. This paper demonstrates the above viewpoint.

Seroprevalence of Toxoplasma gondii in cats in mainland China 2016-2020: a meta-analysis

  • Zhou, Siyu;Sang, Ziyin;Wang, Lijun;Zhang, Tangjie
    • Journal of Veterinary Science
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    • 제23권1호
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    • pp.13.1-13.12
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    • 2022
  • Background: Toxoplasma gondii can infect humans and most animals and has a very high infection rate worldwide, including in China. The number of people infected with T. gondii in China increases with the number of cats. Objectives: We investigated the seropositive rate of T. gondii in cats over the last five years and analyzed the risk factors via meta-analysis. Methods: We retrieved 20 studies, with a total of 5,158 cats, published between 2016 and 2020, used the DerSimonian-Laird model and calculated seroprevalence estimates with the variance stabilizing double arcsine transformation. Results: The overall seroprevalence rate after sinusoidal conversion was 19.9% (95% confidence interval [CI], 15.9-23.9; 966/5,158), lower than the domestic report from 1995 to 2015 (24.5%, 95% CI, 20.1-29.0). There was substantial heterogeneity among studies (χ2 = 262.32; p < 0.001; I2 = 64.6%). Regression analysis of possible heterogeneous causes and subgroup analysis showed that age and whether cats were stray or not have a significant effect on the seropositive rate. Conclusions: Articles published in recent five years suggest that the seroprevalence estimates of Toxoplasma gondii in cats has decreased. Cats, as the final host of T. gondii, are an important cause of the spread of the parasite, and this is an important concern for public health.

Students' and Teachers' Conceptions of Mathematics in the New Curriculum of Mainland China

  • Ding Rui;Wong Ngai-Ying
    • 한국수학교육학회지시리즈D:수학교육연구
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    • 제10권3호
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    • pp.205-213
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    • 2006
  • In this research, we interviewed primary school teachers and students with hypothetical situations questions and got a comprehensive picture of the status quo of what is happening in the new mathematics classrooms of Mainland China, that is, teachers' conceptions of mathematics and their teaching approaches influence the students' conceptions of mathematics to a large extent. For the teacher who emphasizes the precision and rigidity of mathematics, her students focus on the superficial characteristics of mathematics. On the contrary, for the teacher who believes that mathematics is an open process, related to real life and rich in content, her students are more interested in mathematics and have more diverse conceptions.

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Tributary Activity in Diplomacy Relations between Vietnam and Mainland Southeast Asian Countries from 938 to 1885

  • Hanh, Nguyen Thi My
    • 수완나부미
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    • 제13권2호
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    • pp.69-108
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    • 2021
  • Based on research of documents left by Vietnamese feudal dynasties, the current article reports how it initially reconstructed the process of Vietnamese tribute activity of Southeast Asia from the 10th to 19th century and demonstrates the significance of these activities to how Vietnam is considered central rather than peripheral as a nation. Tribute activity took place during a period when Vietnam was an independent country; feudal dynasties of Vietnam were independent and autonomous dynasties. Vietnam had just escaped from the 1,000-year invasion of China and more recently gotten out from the control of the French colonialists. From the demonstration of the tribute activity, otherwise called requesting investiture, the current article places it in relation to the contemporary Chinese "tributary system" to draw out the characteristics and its essence. At the time the current article explores the underlying causes that contributed to shaping the core characteristics of this "tributary system" and its significance to power relationships.

Seismic damage vulnerability of empirical composite material structure of adobe and timber

  • Si-Qi Li
    • Earthquakes and Structures
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    • 제25권6호
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    • pp.429-442
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    • 2023
  • To study the seismic vulnerability of the composite material structure of adobe and timber, we collected and statistically analysed empirical observation samples of 542,214,937 m2 and 467,177 buildings that were significantly impacted during the 179 earthquakes that occurred in mainland China from 1976 to 2010. In multi-intensity regions, combined with numerical analysis and a probability model, a non-linear continuous regression model of the vulnerability, considering the empirical seismic damage area (number of buildings) and the ratio of seismic damage, was established. Moreover, a probability matrix model of the empirical seismic damage mean value was provided. Considering the coupling effect of the annual and seismic fortification factors, an empirical seismic vulnerability curve model was constructed in the multiple-intensity regions. A probability matrix model of the mean vulnerability index (MVI) was proposed, and was validated through the above-mentioned reconnaissance sample data. A matrix model of the MVI of the regions (19 provinces in mainland China) based on the parameter (MVI) was established.