Mean Time to Achieve a Failure-Free Requirement under Provisions of Spare and Repair
This paper obtains an expression for the mean test-time to achieve a failure-free requirement under the provisions of spare and repair.
Mean Time to Achieve a Failure-Free Requirement with Imperfect Repair
This paper obtains expressions for the mean test time to achieve a failure-free requirement with imperfect repair, under two plans. First do complete repair (good as new) at an even number of failures and partial repair (bad as old) otherwise. Next do complete repair at every k-th failure and partial repair otherwise. Plan 1 is a special case of plan 2 (with k = 2).
Inference and Evidence in Archaeology: A Discussion of the Conceptual Problems
Publisher Summary This chapter dicsusses the general features of scientific inference and explains the way inference has been discussed by archaeologists. It presents an explication of current problems in the various areas: (1) the justification of archaeological conclusions, (2) the concepts of archaeological evidence, and (3) the undeveloped relations between archaeological theory and archaeological evidence. The chapter defines these problems and explains the way to resolve them. To resolve many of the problems surrounding uncertain links between inference and evidence, archaeologists should develop a rigorous model that specifies the way information about the past is transmitted to the present via material remains. The chapter presents the structure of such a model. However, establishing relevant data to support conclusions about past phenomena is only part of the overall process of generating archaeological knowledge. Some of the processes responsible for producing the material remains that archaeologists manipulate in assembling evidence to support claims about past phenomena are described in the chapter.