With the economic development, the environment protection problems become more and more serious and the environment protection deterioration risk has been exacerbated in Zibo City, China. Many small heating boilers are used to supply heat in Huantai district of Zibo, which have low efficiency of...

China is entering a rapid developmental stage of urbanisation characterised by tremendous economic development. However, many prominent problems have existed for a long time. Among these, problems on power efficiency should be addressed. The extended models of data envelopment analysis (DEA) and...

Intuitively, activating the standby of a k-out-of-n:G system to the working state at the last moment fully utilizes the redundancy and hence would result in a more reliable system; however, this is not always true as shown in a counterexample. This paper presents several scenarios under which,...

Ordering properties on order statistics from heterogeneous observations have been paid lots of attention. This article devotes to investigating the ordering properties on order statistics from statistically dependent observations. We build the likelihood ratio order and the (reversed) hazard...

Logarithmic Mean Divisia Index I (LMDI I) method is used to decompose China's Aggregate Electricity Intensity (CAEI) into structure effect and intensity effect at the 29-sub-sector level. The decomposition result shows that the intensity effect played a major role on the decline of CAEI during...