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Article
Publication date: 3 January 2022

Xuan Huo and Mingang Lin

This paper aims to review the institutional evolution of China's rural social security system in the past 35 years, focusing on major policy transformations of the rural social…

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Abstract

Purpose

This paper aims to review the institutional evolution of China's rural social security system in the past 35 years, focusing on major policy transformations of the rural social security system in a large country, and extract the Chinese experience on developing rural social security.

Design/methodology/approach

This paper systematically reviews the evolution of rural social security system via organizing policy documents, key events and research literature on the construction of rural social security since the Reform and Opening-up.

Findings

First, institutional transformation is a profound change in China's rural social security system; second, policy transformation has taken place in the main areas of China's rural social security system, including rural endowment insurance, medical insurance and social assistance; third, the policy evolution of China's rural social security system has a unique experience in a large country.

Originality/value

China is the country with the largest rural population in the world. The process and experience of transforming the social security system in the vast rural areas of China have important value and reference significance for other developing countries.

Details

China Agricultural Economic Review, vol. 14 no. 1
Type: Research Article
ISSN: 1756-137X

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Article
Publication date: 12 October 2012

Xueyan Shao, Mingliang Qi and Mingang Gao

The purpose of this paper is to focus on flight exceedances in pilots' operations. With some bad conditions, such as a bad weather, flight exceedances might lead to serious…

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Abstract

Purpose

The purpose of this paper is to focus on flight exceedances in pilots' operations. With some bad conditions, such as a bad weather, flight exceedances might lead to serious consequences. They are significant hidden dangers of aviation. Risk analysis is carried out to identify pilots' high‐risk or low‐risk operations.

Design/methodology/approach

A multi‐objective optimization model is proposed for risk analysis of flight operations. An evolutionary algorithm is designed to divide flight operation state‐space into some high‐risk and low‐risk sub‐spaces.

Findings

Through the empirical study of a certain flight exceedance with the analysis model, the authors discover some high‐risk flight operations, which indicate coordination problems in coordinate control of airplane's speed, rate of descent, heading, roll and pitch, etc.

Originality/value

This paper employs a quantitative model to carry out risk analysis of flight operations. The results are useful to pilots' training and may improve flight safety fundamentally. The risk analysis of flight exceedance is one specific case in airlines safety risk management. Some other problems, such as cause analysis of flight delay, aircraft faults diagnosis, can be addressed in the same way and dealt with by specific model adjustments and algorithm designs.

Details

Kybernetes, vol. 41 no. 10
Type: Research Article
ISSN: 0368-492X

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