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An operational ability assessment system for older adults is of great help to address health and social challenges for ageing. In this paper, the main problems in currently available ADL and ability evaluation systems have been analyzed. The basic principles to build an index system for disability elders evaluation have been put forwarded. Then, an improved Barthel index system for ADL evaluation and a new older adults ability evaluation system consisted of 4 first-level indexes and 14 secondary indexes based on experts' opinion and the ability assessment system for older adults by Ministiy of Civil Affairs of China have been built. The grey clustering model based on end-point mixed triangular possibility function has been introduced. And three living examples of adults' disability evaluation have been conducted. It is confirmed clearly that the three older adults belong to different categories of "severe disability", "mild disability", and "ability passable" respectively. The research results can be used as reference for government to formulate the elderly-care policies, to run and allocate the elderly-care resources, as well as reference for various nursing or elderly-care institutions. [ABSTRACT FROM AUTHOR]

The air quality index (AQI) has been highly valued by many countries and cities as a directional indicator reflecting regional pollution status. The existing AQI only highlights the level of the most polluted pollutant. This paper constructed a new evaluation index by integrating all pollution indicators based on the grey fixed weight clustering analysis model, then a case study was carried out involving 74 cities in China to illustrate the effectiveness of the proposed method. The results show that the evaluation method proposed in this paper is more scientific, which can not only effectively measure the comprehensive pollution level of each city, but also give pollution control strategies for each city from multiple indicators and has achieved good empirical results. [ABSTRACT FROM AUTHOR]

Air pollution has become a serious problem in China. The Ministry of Environmental Protection of China releases real-time air quality monitoring data of 74 major cities online. This thesis applies grey incidence analysis to assess the air quality of 12 monitoring stations by considering all the six indicators instead of the maximum value. The research shows that the two methods achieve similar results. The main reason for the difference between the result of two methods is that the method released by the Ministry of Environmental Protection of China adopt the maximum individual air quality index as air quality index, however, this research takes all the individual air quality indexes into full account to comprehensively assess air quality. [ABSTRACT FROM AUTHOR]

Simulation precision of conventional grey prediction models is poor when modeling sequence has the feature of oscillation. Actually, the smoother the sequence is, the higher the simulation precision is. With the purpose of perfecting the smoothness of oscillation sequence and improving the simulation precision of grey models, this paper researches a smoothing algorithm which can compress the amplitude of oscillation sequence, and by this algorithm, deduces a novel grey prediction model based on oscillation sequence. Finally, we employ the new model to forecast the electricity demand of a city in western China, and compare the simulation precision with other grey models, the results shows the new model has the best simulation effect. Research findings have an important significance to enrich and perfect grey system theory and construct a more reasonable electricity demand prediction model. [ABSTRACT FROM AUTHOR]