According to the theory proposed by Acerbi and Scandolo (2008) [<italic>Quant. Finance</italic>, 2008, <bold>8</bold>, 681--692], an asset is described by the so-called Marginal Supply--Demand Curve (MSDC), which is a collection of bid and ask prices according to its trading volumes, and the value of a portfolio is defined...

Performance based contracting (PBC) emerges as a new after-sales service practice to support the operation and maintenance of capital equipment or systems. Under the PBC framework, the goal of the study is to increase the system operational availability while minimizing the logistics footprint...

The present situation, problems and constraints of the circular agriculture development in Hebei Province are systematically analyzed，the subject modes suitable for the development of circular agriculture and the value-added potential are described, and finally some proposals are put forward.

Purpose: Power is central to inter-organizational relationships. The literature distinguishes between structural power (i.e. dependence) and behavioral power (i.e. use of power), yet few studies considered them simultaneously. Opportunism is generally linked to use of power, but it remains...

Recent research has shown that the control charts with adaptive features are quicker than the traditional static Shewhart charts in detecting process shifts. This article presents the design and implementation of a control chart based on Adjusted Loss Function (AL) with Variable Sample Sizes and...