INS Ground Alignment Through Observable Degree Analysis Based on Information Theory

Qiang Fang 제어로봇시스템학회 2015 제어로봇시스템학회 국제학술대회 논문집 Vol.2015 No.10

Observability is an important aspect of the state-estimation problem in the initial alignment of the inertial navigation system(INS). In most previous research, the authors focus on determining the observable states and unobservable states of a system, while this analysis does not provide sufficient information on the performance of error estimators. In order to provide more insight into the system error estimators, it is necessary to analysis the observable degree of the observable states. For the analysis of the degree of observability, an analysis based on information theory of an inertial navigation system in ground alignment with Bar-Itzhack and Bermans error model is presented. It is shown that through the method based on mutual information, we can not only determine which state is observable and which is not, but also calculate the exact degree of observability of the system states. Simulation results indicate that the observable degree indexes are able to predict Kalman filtering errors of system states, and demonstrate the validity of the method.

Inhibition of Dextran Sodium Sulfate-Induced Experimental Colitis in Mice by Angelica Sinensis Polysaccharide

Fang Cheng,Yu Zhang,Qiang Li,Fang Zeng,Kaiping Wang 한국식품영양과학회 2020 Journal of medicinal food Vol.23 No.6

Studies have confirmed that Angelica sinensis, which is a famous medicinal food in China, can effectively alleviate the symptoms of ulcerative colitis (UC) in rats. However, as the major water-soluble ingredient, the specific effects of A. sinensis polysaccharide (ASP) on UC and potential mechanisms were uncertain. In this study, we aimed to elucidate the protective effects of ASP on dextran sulfate sodium (DSS)-induced UC and to further explore the mechanisms. ASP could significantly ameliorate the symptoms of weight loss, disease activity index score, and colon shortening caused by DSS. ASP treatment also significantly suppressed the myeloperoxidase activity in colon tissues. Furthermore, after ASP administration, the expression of the proinflammatory cytokines (interleukin [IL]-6, IL-1β, and tumor necrosis factor alpha) induced by DSS was remarkably suppressed, and there was a definite improvement in the expressions of tight junction proteins, such as zona occludens 1, occludin, and claudin-1. In addition, the results of apoptosis experiments showed that the apoptotic events were noticeably reduced after ASP treatment. Taken together, these results suggested that ASP may be a potential natural agent against UC.

Analyzing the Natural Disaster Management System in China : A Case Study of the Typhoon Saomai

Qiang, En-Fang,Lee, Jae Eun 韓國政策硏究院 2007 한국정책논집 Vol.7 No.-

중국은 자연재난이 빈번하게 발생하고 있으며 약 2억 명의 중국인들이 매년 자연재난으로 인해 고통을 받고 있다. 이에 이 연구에서는 중국 위기관리 시스템의 법 체계, 공공 위기계획 체계, 조직 체계, 운영 메카니즘, 위기 분류, 그리고 재난 대응 과정 등을 살펴보고 있다. 이 논문은 2006년 중국에 피해를 입힌 사오마이 태풍에 대한 사례 연구를 통해 구체적으로 중국의 자연재난 관리 시스템의 특징을 분석하는 것을 목적으로 한다. 사오마이 태풍에 대한 논의를 기반으로 중국의 자연재난관리의 미시적 수준, 중범위 수준, 거시적 수준 각각에서 정책적 제언을 하고 있다.

From “Hard” to “Soft” Values Transformation in Disaster Management of Chinese Government

En Fang Qiang 충북연구원 2016 지역정책연구 Vol.27 No.1

The 2011 Wenzhou bulletin train collision was a deadly high-speed railway accident which shocked China and the world. The rail authority declared that train crash was a natural disaster, but the central government investigation team believes that the accident was “a completely avoidable accident” and “should not have happened”. This paper introduces value theory into emergency and disaster management field to assess why different government organizations have two different disaster reason explanations. There are eight core values in public administration, among them, economy, efficiency, effectiveness, and leadership can be classified into hard values, and accountability, transparency, ethics, and professionalism can be classified into soft values. Due to the analysis of train disaster management process, this study found a value transformation in disaster management process, which is in the mitigation, preparation, and response stages, the Chinese government mainly focuses on hard values and lost public trust, and in the recovery stages, the Chinese government turns to soft values and tries to gain the public trust that will answer the question of two explanations. The soft value-oriented disaster management model will also make China safer and lead to good governance.

A Stakeholder Framework for Comparative Analyzing Oil Spill Response in China and Korea

En-Fang Qiang 위기관리 이론과 실천 2011 Journal of Safety and Crisis Management Vol.1 No.1

An oil spill has a great impact on the environment and human life. The oil spill is a serious man-made disaster, and is a result of hazard and social vulnerability. This research employs a stakeholder approach by developing a framework for oil spill response. Comparing the Taean oil spill case of Korea and Dalian oil spill case of China, this study analyses the roles of primary stakeholders in the oil spill management, and determines the strengths and weaknesses of the same stakeholder in the two countries. Examination of the nine primary stakeholders, central government, local government, PLA and police, NGOs, community, private sector, victims, media, and natural environment, can help to understand the similarities and differences of the two oil spill management systems, including of the disaster management system.

Public Trust in Government Crisis and Rebuilding Strategy in China: Analyses Based on a Questionnaire

En Fang Qiang 위기관리 이론과 실천 2012 Journal of Safety and Crisis Management Vol.2 No.2

In China, more than 30 years of rapid socioeconomic development has achieved a world’s second economy and formed a distribution system of social wealth without fair and justice. Benefited by the education and IT revolution, the poor people and rural citizens are stressing rights, equality, expression, and participation much more than before and older generations. They are losing the public trust in government which threatens the government legitimacy. This paper examines the relationship between the wealth distribution system with Gini coefficient and gap between the rich and the poor. Using survey data collected from 2010, I examine rural citizens’ trust in government institutes, such as the central government, local government, the court, and public servants. This study also provides some strategic suggestions on rebuild public trust in government by rebuilding moral trust, economic trust, political trust, social trust, and technological trust.

Stakeholders in Natural Disaster Management of China : A Case of Wenchuan Earthquake

En Fang Qiang 위기관리 이론과 실천 2009 Crisisonomy Vol.5 No.2

Natural disaster management is one of the important contents of public emergency management system of Chinese government. The whole society must be involved in the process to response the natural disaster efficiently, effectively, and economically. This paper employs the stakeholder theory, and divides the stakeholders in natural disasters into primary stakeholder and secondary stakeholder. Taking the Wenchuan Earthquake for example, the primary stakeholders in natural disaster management in China are classified into central government, local government, army and armed police, NGO, community, private sector, victims, media, and environment, and the roles of them are discussed. This paper also gives political suggestions on study of strengthening the stakeholders system, focusing the primary stakeholder, and expanding the spectrum of stakeholders.

Causes and Responses : Reflection on China s Coal Mine Disasters 2005-2014

En Fang Qiang 위기관리 이론과 실천 2015 Journal of Safety and Crisis Management Vol.5 No.1

The constant and numerous mine disasters and thousands dead miners shocked China and world repeatedly in 2005. The Chinese Central Government made great efforts to resolve this problem, but produced little effect. The miners of China have made enormous contribution to the economic growth of China, but their lives cannot get basic guarantee from governments. This paper examines five mine disasters occurred in 2005, and attempted to provide the immediate causes of the problem. Moreover, this article checks the relationships among the Central Government with local governments, and Central Government with officials of local government. It also accesses the responses of Chinese government to the mine disasters. At last it draws the conclusion that it is the “government failure” and “market failure” cause the mine disasters, and that’s why Chinese coal mine disasters continue to now.

Society Rebuilding and Social Innovation in the Response to Wenchuan Earthquake (pp.270-289)

En Fang Qiang 국가위기관리학회 2009 국가위기관리학회 학술대회 Vol.2009 No.1

Control Ability : Core competitiveness of Chinese Disaster Management Cooperation System

En-Fang QIANG 위기관리 이론과 실천 2017 위기관리 이론과 실천 학술대회 Vol.2017 No.04