Quality and safety of agricultural products are significant for national socioeconomic development, sustainable development, and vital interests of people. To safeguard quality and safety of agricultural products in west China is to safeguard economic safety and ecological safety of the country,...

This paper analyses the supply chain models of four types of agricultural products, namely fruits and vegetables, poultry, aquatic products and dairy, and the food safety problems arising from the links of supply chain. In view of different models, corresponding suggestions are put forward to...

A general method is described which allows a production activity to be analyzed by means of input data only. According to duality theory, the input cost shares can be completely specified without any information about output if the technology is homothetic. It is demonstrated that these cost...

A general method is described which allows a production activity to be analyzed by means of input data only. According to duality theory, the input cost shares can be completely specified without any information about output if the technology is homothetic. It is demonstrated that these cost...

The BIM paradigm, supplied by appropriate standards like IFC, became unavoidable in recent construction projects. Several applications (e.g. indoor navigation, energy analysis ...) find in it a source of information on which they can rely. However, practices reveal that BIM models are not always...