St. Louis to St. Paul Corridor Feasibility and Necessity Study: Consultant's Report to the States, 1990

The study analyzes the need for a four-lane highway between St. Louis and St. Paul, and finds it to be needed; it analyzes the highway's feasibility, and finds it to be feasible; it analyzes alternative design standards and suggests that it be built to expressway standards; and, the study evaluates alternative routes and presents four "finalist" routes for your consideration.

St. Louis to St. Paul Corridor Feasibility and Necessity Study: Consultant's Summary Report, 1990

The study analyzes the need for a four-lane highway between St. Louis and St. Paul, and finds it to be needed; it analyzes the highway's feasibility, and finds it to be feasible; it analyzes alternative design standards and suggests that it be built to expressway standards; and, the study evaluates alternative routes and presents four "finalist" routes for your consideration.

Capping computation time and storage requirements for appearance-based localization with CAT-SLAM

Appearance-based localization is increasingly used for loop closure detection in metric SLAM systems. Since it relies only upon the appearance-based similarity between images from two locations, it can perform loop closure regardless of accumulated metric error. However, the computation time and memory requirements of current appearance-based methods scale linearly not only with the size of the environment but also with the operation time of the platform. These properties impose severe restrictions on longterm autonomy for mobile robots, as loop closure performance will inevitably degrade with increased operation time. We present a set of improvements to the appearance-based SLAM algorithm CAT-SLAM to constrain computation scaling and memory usage with minimal degradation in performance over time. The appearance-based comparison stage is accelerated by exploiting properties of the particle observation update, and nodes in the continuous trajectory map are removed according to minimal information loss criteria. We demonstrate constant time and space loop closure detection in a large urban environment with recall performance exceeding FAB-MAP by a factor of 3 at 100% precision, and investigate the minimum computational and memory requirements for maintaining mapping performance.

Association study of resistance to Soilborne wheat mosaic virus in U.S. winter wheat

Soilborne wheat mosaic virus (SBWMV) is one of the most important winter wheat pathogens worldwide. To identify genes for resistance to the virus in U.S. winter wheat, association study was conducted using a selected panel of 205 elite experimental lines and cultivars from U.S. hard and soft winter wheat breeding programs. Virus symptoms were evaluated twice in virus-infected fields for the panel at Manhattan, KS in spring 2010 and 2011 and for a subpanel of 137 hard winter wheat accessions at Stillwater, OK in spring 2008. At the two locations, 69.8 and 79.5% of cultivars were resistant or moderately resistant to the disease, respectively. After 282 simple-sequence repeat markers covering all wheat chromosome arms were scanned for association in the panel, marker Xgwm469 on the long arm of chromosome 5D (5DL) showed a significant association with the disease rating. Three alleles (Xgwm469-165bp, -167bp, and -169bp) were associated with resistance and the null allele was associated with susceptibility. Correlations between the marker and the disease rating were highly significant (0.80 in Manhattan at P < 0.0001 and 0.63 in Stillwater at P < 0.0001). The alleles Xgwm469-165bp and Xgwm469-169bp were present mainly in the hard winter wheat group, whereas allele Xgwm469-167bp was predominant in the soft winter wheat. The 169 bp allele can be traced back to 'Newton', and the 165 bp allele to Aegilops tauschii. In addition, a novel locus on the short arm of chromosome 4D (4DS) was also identified to associate with the disease rating. Marker Xgwm469-5DL is closely linked to SBWMV resistance and highly polymorphic across the winter wheat accessions sampled in the study and, thus, should be useful in marker-assisted selection in U.S. winter wheat.

Evaluation of physical chemical treatment at Rosemount /

Mode of access: Internet.

Automatic sludge blanket control in an operating gravity thickener /

Mode of access: Internet.

Onions,

Mode of access: Internet.

Small forest ownership in the urban fringe area of Michigan,

Mode of access: Internet.

Farm lumber consumption and use date : needs and methods of estimating /

"November 1961."

Growth of swamp conifers following an improvement cut /

"April 1959."

Seed production areas in the Lake States : guidelines for their establishment and management /

"June 1959."

An improved increment-core method for predicting growth of forest stands /

"July 1948."

Hybrid poplar planting in the Lake States /

"December 1948."

Managing red pine for poles in Lower Michigan /

"January, 1958."