8,314 research outputs found
An optimal internet location strategy for markets with different tax rates
The traditional view that a high sales tax rate reduces trade by driving a wedge between the purchase and sale price may not apply to internet commerce for two reasons. The first reason is that the sales tax paid by buyers purchasing via the internet is determined by the tax rate in the region of the buyer. The second reason is that a high sales tax may lower the before-tax price if sellers absorb part of the tax. Taken together, this implies that internet distributors may profitably target customers in regions with low tax rates by locating their selling addresses in high tax regions. Consequently the optimal marketing strategy for a global internet distributor may include siting selling locations in regions with high tax rates in order to target customers in regions with low tax rates. An empirical analysis of the European car market suggests that this is more than a remote theoretical possibility by demonstrating that the before-tax prices recommended by manufacturers for new cars are lower in high tax countries
Ureteropelvic junction obstruction caused by metastatic cholangiocarcinoma
We describe the rare case of a 61-year-old female with right ureteropelvic junction (UPJ) obstruction caused by metastatic cholangiocarcinoma. Her past medical history was notable for cholangiocarcinoma treated with neoadjuvant chemoradiation and two orthotopic liver transplants six years earlier. Urology was consulted when she presented with flank pain and urinary tract infection. Diagnostic workup demonstrated right UPJ obstruction. She was managed acutely with percutaneous nephrostomy. She subsequently underwent robotic pyeloplasty and intrinsic obstruction of the UPJ was discovered. Histological examination revealed adenocarcinoma, consistent with systemic recurrence of the patient\u27s known cholangiocarcinoma
Review of \u3ci\u3e Bugs in the System: Redesigning the Pesticide Industry for Sustainable Agriculture\u3c/i\u3e Edited by William Vorley and Dennis Keeney
At first glance you might wonder what, if anything, pesticides and sustainable agriculture have in common. To quote the editors: This book is a case study of an industry which finds itself with a vision of sustainable development and an entire product range which seems to be an anathema to that vision - pesticides - and a uniform perspective of its role in agriculture. We hope that this study is the beginning of an articulation of the choices that face the leaders, regulators and other stakeholders of this particularly controversial industry if they are to choose a course of sustainability. The editors, William Vorley and Dennis Keeney, are well qualified to address this issue. Vorley has extensive experience in the pesticide industry and in crop protection; Keeney has been the Director of the Leopold Center for Sustainable Agriculture at Iowa State University since 1988. One of the strengths of their volume is its wide expanse of disciplines and approaches, ranging from crop protection to business management, economics, sociology, and systems science. The authors represent both North America and Europe, giving an international perspective to the discussion. Because of this breadth of coverage, few readers would fail to glean some new ideas from this book
NF98-374 Corn Blotch Leafminer
This NebFact describes what is known about the biology of the Corn Blotch Leafminer, in preparation for the possibility of highter numbers in future years
G07-1783 Second Generation European Corn Borer Scouting and Treatment Decisions
The decision to treat for European corn borer is complex and affected by many variables, such as weather, plant maturity, borer survival and development, anticipated corn prices, insecticide efficacy, and costs versus anticipated returns. This 2007 NebGuide discusses the factors growers need to consider when assessing the need for control of second generation European corn borers in non-Bt corn
EVALUATING IMPLEMENTATION SCHEDULES FOR INVESTMENTS IN STRATEGIC INFORMATION TECHNOLOGIES: FRAMEWORK AND APPLICATION TO EDI
We develop a framework based on "project networks" and net present value analysis in order to help managers
evaluate investments in infrastructural and strategic information systems that require significant amounts of time and
money to implement. The framework, which we term "value networks", supports decomposition of investment
projects into separate increments, offers a means to represent crucial dependencies that affect the creation of IT
business value, and provides a basis for developing a measurement methodology which can be used from the
planning through the implementation stages. This enables the user to identify the implications of choosing among
different implementation schedules. We illustrate these ideas by examining how our framework can used to evaluate
investments in Electronic Data Interchange (EDI) and Cash Management Systems (CMS).Information Systems Working Papers Serie
Searching for Earth-mass planets around Centauri: precise radial velocities from contaminated spectra
This work is part of an ongoing project which aims to detect terrestrial
planets in our neighbouring star system Centauri using the Doppler
method. Owing to the small angular separation between the two components of the
Cen AB binary system, the observations will to some extent be
contaminated with light coming from the other star. We are accurately
determining the amount of contamination for every observation by measuring the
relative strengths of the H- and NaD lines. Furthermore, we have
developed a modified version of a well established Doppler code that is
modelling the observations using two stellar templates simultaneously. With
this method we can significantly reduce the scatter of the radial velocity
measurements due to spectral cross-contamination and hence increase our chances
of detecting the tiny signature caused by potential Earth-mass planets. After
correcting for the contamination we achieve radial velocity precision of for a given night of observations. We have also
applied this new Doppler code to four southern double-lined spectroscopic
binary systems (HR159, HR913, HR7578, HD181958) and have successfully recovered
radial velocities for both components simultaneously.Comment: accepted for publication in the International Journal of Astrobiology
(published by Cambridge University Press); will appear in a revised form,
subsequent to editorial input by Cambridge University Pres
Leroy L. Peters Obituary
Leroy Lynn Peters, of Wamego, KS, died Sunday, July 23, 2006, at the Wamego City Hospital after an extended illness. Peters was born on June 21, 1931, to Lester L. and Mildred (Wade) Peters in Deerfield, MO. He attended Walnut, MO, schools and graduated from Walnut High School in 1949. He was a U.S. Army veteran, having served during the Korean War. On May 23, 1954, he married Barbara Jane Clark in Walnut.
He earned a B.S. degree in biological science in 1955 and an M.S. degree in entomology in 1956, both from Kansas State University. In 1971, he earned his Ph.D. in entomology from the University of MissouriâColumbia. His dissertation topic was âInfluence of Corn Amylase on Angoumois Grain Moth Biologyâ.
Peters worked as a survey entomologist for the state of Kansas (1958â1964) and was employed as an instructor and assistant professor of entomology at the University of MissouriâColumbia (1964â1971). From 1972 to 1991, he served as associate professor and then professor of entomology at the University of NebraskaâLincolnâs South Central Research and Extension Center, near Clay Center. His research and extension responsibilities emphasized management of field crop insects. Petersâ programming efforts included management of chinch bugs and greenbugs on grain sorghum, corn rootworms, and stored grain insects
Groundwater Hydrology of a Population of Lindera melissifolia in Arkansas
Groundwater hydrology was monitored from October through August in and around a bottomland forest pond containing Lindera melissifolia, pondberry. The study site exhibited a series of low ancient dunes and depressions, with seasonal ponds in the depressions. Ponds showed no surface inlets or outlets. Shallow wells were made and soil cores removed along a transect from the top of one dune across the pond to a lower dune. Piezometers were installed in the wells and groundwater levels monitored. Soil core samples were analyzed to determine particle size distribution at soil profile positions selected during field analysis. It was shown that a subsurface hydrologic gradient exists between surrounding dune slopes and the pond bottom, delivering groundwater to the pond during the season when precipitation exceeds evapotranspiration. The hydrologic gradient was shown to be substrate-dependent
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