122,636 research outputs found
A two-parameter wind speed algorithm for Ku-band altimeters
No full textGlobally distributed crossovers of altimeter and scatterometer observations clearly demonstrate that ocean altimeter backscatter correlates with both the near-surface wind speed and the sea state. Satellite data from TOPEX/Poseidon and NSCAT are used to develop an empirical altimeter wind speed model that attenuates the sea-state signature and improves upon the present operational altimeter wind model. The inversion is defined using a multilayer perceptron neural network with altimeter-derived backscatter and significant wave height as inputs. Comparisons between this new model and past single input routines indicates that the rms wind error is reduced by 10%–15% in tandem with the lowering of wind error residuals dependent on the sea state. Both model intercomparison and validation of the new routine are detailed, including the use of large independent data compilations that include the SeaWinds and ERS scatterometers, ECMWF wind fields, and buoy measurements. The model provides consistent improvement against these varied sources with a wind-independent bias below 0.3 m s?1. The continuous form of the defined function, along with the global data used in its derivation, suggest an algorithm suitable for operational application to Ku-band altimeters. Further model improvement through wave height inclusion is limited due to an inherent multivaluedness between any single realization of the altimeter measurement pair [?o, HS] and observed near-surface winds. This ambiguity indicates that HS is a limited proxy for variable gravity wave properties that impact upon altimeter backscatter
GIS in Indigenous Communities isn't Participatory GIS: Examples in Honduras and Mexico
No full textKU Department of GeographyPlatinum Sponsors
Coca-Cola
Gold Sponsors
KU Department of Geography
KU Institute for Policy & Social Research
KU Libraries GIS and Data Services
State of Kansas Data Access and Support Center (DASC)
Wilson & Company Engineers and Architects
Silver Sponsors
Bartlett & West
Kansas Applied Remote Sensing Program
KansasView
Bronze Sponsors
Garmin
KU Biodiversity Institut
Phylogeography and Meta-Community Analysis in QGIS
No full textBiodiversity Institute, The University of KansasPlatinum Sponsors
KU School of Business
Gold Sponsors
Bartlett & West
KU Department of Geography
KU Environmental Studies Program
KU Institute for Policy & Social Research
KU Libraries
Silver Sponsors
Kansas Biological Survey
KU Center for Global & International Studies
Bronze Sponsors
Global Information Systems
State of Kansas Data Access and Support Center (DASC)
KU Center for Remote Sensing of Ice Sheets (CReSIS
Ku Klux Klan Cross Burning
No full textKu Klux Klan beliefs included white supremacy, protection of family values, Protestant faith, and the promotion of "pure Americanism.
Enabling Biodiversity Research with Open Source Workflow, GIS and Metadata Tools
No full textSoftware developer, Informatics at the KU Biodiversity InstitutePlatinum Sponsors
Coca-Cola
Gold Sponsors
KU Department of Geography
KU Institute for Policy & Social Research
KU Libraries GIS and Data Services
State of Kansas Data Access and Support Center (DASC)
Wilson & Company Engineers and Architects
Silver Sponsors
Bartlett & West
Kansas Applied Remote Sensing Program
KansasView
Bronze Sponsors
Garmin
KU Biodiversity Institut
Passive Microstrip Transmitarray Lens for Ku Band
No full textThe aim of this paper is to introduce a novel 12 GHz radiating design based on the idea of transmitarray lens device. In this document, an overview of the functioning of this kind of devices is given and the proposed transmitarray lens is studied, with architecture discussion and selection, as well as some ideas about the design, and manufacturing. In the document, some design, manufacturing and validation of the constituting elements of the lens (radiating elements, transmission circuits and transitions) are presented, together with a complete prototype of assembled transmitarray lens. Radiation pattern measurements in anechoic chamber, as well as gain and directivity values are offered
Down-regulation of Ku 70 and Ku 80 mRNA expression in transitional cell carcinomas of the urinary bladder related to tumor progression
No full textDNA-dependent protein kinase (DNA-PK) containing the regulatory subunits Ku 70 and Ku 80 plays a prominent role in the repair of double-stranded DNA breaks by a nonhomologous end-joining pathway maintaining genomic stability. In an attempt to elucidate the significance of the DNA-PK complex for human urothelial carcinogenesis, the expression of Ku 70 and Ku 80 was studied in 71 transitional cell carcinomas (TCC) of the urinary bladder of various grades and stages, and in relation to lifestyle and occupational bladder cancer risk factors. To analyse the mRNA expression of Ku 70 and Ku 80, real-time quantitative reverse transcription-polymerase chain reaction was used and the protein expression assessed by immunohistochemistry. Advanced high-grade, high-stage TCC expressed the mRNA of Ku 70 and Ku 80 at a lower level than superficial low-grade, low-stage carcinomas, suggesting down-regulation of the Ku system to be associated with progression of bladder cancer from a low to a high malignant potential. The protein expression of Ku 70 and Ku 80 was closely related and decreased consistently with increasing grades and stages, paralleling the expression of the mRNA. Among hazardous environmental bladder cancer risk factors, heavy consumption of coffee was associated with a twofold decreased Ku 70 and Ku 80 mRNA expression, whereas tobacco smoke did not substantially affect the activity of the Ku system, except for a trend towards a dose-response relationship in the expression of Ku 70 mRNA. There is some evidence that exposure to polycyclic hydrocarbons, paints and lacquer, and stone dust may modify the expression of Ku 70 mRNA. Although the underlying molecular genetic pathways are not yet clearly understood, our data indicate that down-regulation of the Ku system promotes progression of urothelial carcinogenesis to a more malignant and aggressive clinical behavior, presumably as a result of an impaired capacity for DNA repair
KU Law School Launches Program with Emporia State
No full textIn 2003, Emporia State University and the University of Kansas teamed up to create the Legal Information Management Program. Conceived by KU Law Professor Michael H. Hoeflich, this inter-disciplinary (law-library) program aims to train professionals for legal libraries, whether in academia, or in the public or private sectors
The effect of Ku on telomere replication time is mediated by telomere length but is independent of histone tail acetylation
No full textPeer reviewe
Comparison of SEM microscopic structure of Fagus l. (Fagaceae) pollen from extant and fossil samples in Taiwan
No full text- …
