Short-time homomorphic wavelet estimation

Successful wavelet estimation is an essential step for seismic methods like impedance inversion, analysis of amplitude variations with offset and full waveform inversion. Homomorphic deconvolution has long intrigued as a potentially elegant solution to the wavelet estimation problem. Yet a successful implementation has proven difficult. Associated disadvantages like phase unwrapping and restrictions of sparsity in the reflectivity function limit its application. We explore short-time homomorphic wavelet estimation as a combination of the classical homomorphic analysis and log-spectral averaging. The introduced method of log-spectral averaging using a short-term Fourier transform increases the number of sample points, thus reducing estimation variances. We apply the developed method on synthetic and real data examples and demonstrate good performance.Comment: 13 pages, 5 figures. 2012 J. Geophys. Eng. 9 67

All Aboard for Field Trips

Science with Practice, the motto of Iowa State College is true to life when the Home Economics students in all departments trade their classrooms for a field trip

Old, but not Outmoded

The modern homemaker with her creative imagination recognizes function and design for daily living. Antiques do fit in! They\u27re not only objects of value and distinct character, but they\u27re useful

Analyzing The Impact Of Zip Subfamily Ii Mutations On The Zinc And Iron Transport Of Zupt From Escherichia Coli

The disfunction or misregulation of the ZIP family of metal ion transporters has been linked to a plethora of diseases and cancers in humans. Zn2+ is the primary substrate for ZIPs and is transported through the M1 metal binding site, though this activity is stimulated through the binding of Fe2+ in the M2 metal binding site. The members of ZIP Subfamily II are predicted to have an inactive M2 site due to the lack of Fe2+ transport and from a previously generated homology model. This work utilizes homology modelling, whole cell metal ion uptake assays, and growth studies in minimal media to analyze the impact of Subfamily II-like M2 mutations on the Zn2+ and Fe2+ transport of ZupT, the ZIP native to Escherichia coli which has an active M2 site. These mutations severely inhibit ZupT’s Fe2+ transport while Zn2+ transport is relatively unaltered, providing further evidence that the members of ZIP Subfamily II have an inactive M2 site. The regulation of ZIPs remains mostly unknown, so identifying an inactive regulatory site in Subfamily II demonstrates that ZIPs are diverse and may require diverse treatments for ZIP-related diseases

New England by Garfield

It is rewarding to work with young people. And the sincerity of Miss Marjorie S. Garfield, professor and head of the Applied Art Department, is seen in her enthusiasm known to so many home economics students

Your Electives Have a Future

To be a practical homemaker, you\u27ll benefit by taking elective courses beyond the Home Economics core curriculum. Yes, investigate the valuable courses in Animal Husbandry, Architecture, Botany, Sociology, English, Horticulture, Landscape Architecture and Industrial Education

Gift Guide

Here is a colorful patchwork of Christmas gift ideas. Bulky things, gay things, sharp things, noisy things, handy things . . . things you can make, things you can shake, things you can break. See if you can match your Christmas shopping list with these

Light Beautiful

Light beautiful must surely be the motto of Dr. Louise J. Peet, Department of Household Equipment, for her spacious colonial style home at 2833 Ross Road literally radiates. Dr. Peet has installed in her home special indirect lighting effects, including those she has told her students about in 23 years of teaching household equipment classes

Good Design Doesn\u27t Have To Be Expensive

Like a wistful child pressing two handprints on the window of a doll shop, you say, Household accessories in today\u27s shop windows are certainly lovely, but I could never afford such nice things! Don\u27t despair- you can have lovely things. It\u27s design that makes these pieces so smart. And you can find good design among the inexpensive as well as the elite-of-price today

A State Comparative Study of the Factors Influencing Nursing Home Quality of Care Regulation

While over one million elderly reside in U.S. nursing homes, little attention has been given to the factors that influence state nursing home regulation and how state regulations differ from the federal regulations. The focus of nursing home research literature has been on factors that impact quality of care at the individual patient and organizational level. The state comparative literature, which examines the differences between state policy choices, focuses on fiscal nursing home policymaking. An important gap exists in the literature in that state decision-making regarding nursing home quality of care policy has not been explored. This study of U.S. nursing home quality of care regulation examines the factors that affect whether or not state nursing home regulations exceed the federal regulations. Most of the variables utilized in the current study were not significant in predicting whether or not states exceed the federal quality of care regulations. There does appear to be some demographic, socioeconomic and political influence. States with higher Medicaid payments per elder were more likely to exceed the federal regulations. States with Democratic governors were less likely to exceed the federal regulations, however, this was in the opposite direction than expected. States with traditionalistic political cultures may also be less likely to exceed to federal regulations for quality of care. Once other state-level factors were controlled for, Medicaid payment and political culture were no longer significant predictors of whether or not states exceed the federal quality of care regulations. Party control of the legislature emerged as significant with the odds of states with Democratic legislatures being 13 times more likely to exceed the federal regulations than Republican-controlled legislatures. Percent minority population also emerged as significant with a one percent increase in minority population decreasing the odds of exceeding the federal regulations by 7.5%. The variables and theory needed to explain differences in state nursing home policy may be different from other policy areas in terms of what factors affect policy outcomes. This study shows that a purely quantitative approach to state comparative studies may not be the best approach in all cases and interviews with key nursing home stakeholders should be pursued to further inform the decision-making processes regarding nursing home regulation