1. Introduction. Until recently, statistical theory has been restricted to the design and analysis of sampling experiments in which the size and composition of the samples are completely determined before the experimentation begins. The reasons for this are partly historical, dating back to the time when the statistician was consulted , if at all, only after the experiment was over, and partly ...

There exists a wide range of optimization models in the Operations Management (OM) community to solve complex problems such as lot sizing. However, their practical performance is often criticized due complexity implementation and insufficient applicability real-world decision processes. These theory-driven approaches are either simple compute, but only focus on single aspects without being able...

OBJECTIVE To clarify the principles of a safe delivery based on Clinical Governance Criteria, as recommended by the pertinent experts. MATERIALS AND METHODS The current study was part of a qualitative research conducted by content analysis method in 2013 and purposive sampling, performing 24 in-depth interviews based on semi-structured questions and analyzed using thematic content analysis. T...

The Lapped Orthogonal Transform (LOT) [1][3] is a new transform for block image coding. It has basis functions that overlap adjacent blocks and decay smoothly to zero, and so it can reduce the blocking effect to very low levels, without any data overhead. In t'his paper we show that a quasi-optimal LOT can be computed with an algorithm based on the discrete cosine transform (DCT), with only 30 ...

Supply network issues recently have attracted a lot of attention from industrial practitioners and academics worldwide. Supply networks are highly complex systems. The oscillations in demand and inventory as orders pass through the system have been widely studied in literature. Studies have shown that supply networks can display some of the key characteristics of chaotic systems. Chaos theory i...

A new piece of equipment has been purchased in a lot of size m . Some of the items can be used in destructive testing before the item is put into use. Testing uncovers faults which can be removed from the remaining pieces of equipment in the lot. If t õ m pieces of equipment are tested, then those that remain, mt Å m 0 t , have reduced fault incidence and are more reliable than initially, but m...