124,478 research outputs found
Objective Bayes and Conditional Frequentist Inference
Objective Bayesian methods have garnered considerable interest and support among statisticians,
particularly over the past two decades. It has often been ignored, however, that in
some cases the appropriate frequentist inference to match is a conditional one. We present
various methods for extending the probability matching prior (PMP) methods to conditional
settings. A method based on saddlepoint approximations is found to be the most
tractable and we demonstrate its use in the most common exact ancillary statistic models.
As part of this analysis, we give a proof of an exactness property of a particular PMP in
location-scale models. We use the proposed matching methods to investigate the relationships
between conditional and unconditional PMPs. A key component of our analysis is a
numerical study of the performance of probability matching priors from both a conditional
and unconditional perspective in exact ancillary models. In concluding remarks we propose
many routes for future research
Club-guessing, stationary reflection, and coloring theorems
We obtain strong coloring theorems at successors of singular cardinals from
failures of certain instances of simultaneous reflection of stationary sets.
Along the way, we establish new results in club-guessing and in the general
theory of ideals.Comment: Initial public versio
Wet Strength Resins
Wet strength is defined as a paper which has extraordinary resistance to rupture or disintegration when saturated with water. This definition has been interpreted as if a paper sample retains more than 15% of its dry strength when wetted, it can be considered to have wet strength properties.
Wet strength resins are chemicals that aid in wet strength, and they have been around since the 1940\u27s. These wet strength resins help to protect paper and paper products from breaking down in the presence of water and high humidity. There are many uses for wet strength resins these days, Some of these are: To protect from outdoor weather, to aid in drying and wiping, to wrap up food products, and to help in things that must be totally submerged in water.
The resins compared are urea formaldehyde, melamine formaldehyde, polyamide epichlorohydrin, and polyamine epichiorohydrin. These resins when compared showed that the newer PAE resins had better wet strength properties than the older formaldehydes. Because of this reason and that formaldehyde is a public hazard and is regulated by OSHA, the PAE resins came out better in cost and overall usage
Preliminary Comments on Dog Interments from Archeological Sites in Northeast Texas: Folklore and Archeology
Dogs have been associated with humans for thousands of years, and dog interments—either associated with human interments or as separate interments—also have an antiquity of thousands of years. This brief paper will summarize dog burials in a worldwide context, and then focus on the folklore, ethnology, and archeology of dogs among the Caddo. The information for the dog in Caddo culture will be summarized from George A. Dorsey’s Traditions of the Caddo and John R. Swanton’s Source Material on the History and Ethnology of the Caddo Indians. Then, dog interments from northeast Texas will be listed and discussed. By examining the folklore, ethnology, and archeology of the dog in Caddo contexts, it is hoped that a greater understanding of the role of dogs in prehistoric Caddo culture might be attained
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