Cultural Environment: Native American Peoples in North America

Students will use pictures to compare and contrast the cultural environment of Native Americans in their regions

John Dewey: The Editor\u27s Appreciation

When John Dewey was born in 1859, there were in this country some men, and a few women, who were philosophers, teachers of philosophy, and students of philosophy, but these people could not teach or study American philosophy because there was no body of thought that could be called American philosophy. Half a century later, we did have an identifiable American philosophy and much that is distinctive about it we owe to John Dewey. In fact, by 1920, when Dewey was sixty-one years old, Morris Raphael Cohen was able to say, John Dewey is unquestionably the one preeminent figure in American philosophy; and if there could be such an office as that of national philosopher, no one else could properly be mentioned for it. ! The key word here is of course national, because Dewey has long been considered the most American of the American philosophers and frequently called the philosopher of democracy. To bring the record up to date, and to underline the national character of Dewey\u27s philosophy, I should add that Dewey is obviously the only American in the group named by Richard Rorty a few years ago as the three most important philosophers of our century -Wittgenstein, Heidegger, and Dewey.2 What kind of man was this great philosopher? I would like for you to know John Dewey as I have come to know him, both as philosopher and as person, chiefly through his own words and the words of others who knew him well

Thermoelectric Effect in Single Crystals Bismuth

Wires of single crystals of bismuth have been prepared by the Czrokalski method. The crystals so far investigated have been of orientations between 10° and 40°. The variations of the thermoelectric properties with orientation is rather slight in bismuth compared with similar effects in zinc as found by Linder, Grüneisen and Goens, and Bridgman

Cyclic Ruthenium-Alkylidene Catalysts for Ring-Expansion Metathesis Polymerization

A series of cyclic Ru-alkylidene catalysts have been prepared and evaluated for their efficiency in ring-expansion metathesis polymerization (REMP). The catalyst structures feature chelating tethers extending from one N-atom of an N-heterocyclic carbene (NHC) ligand to the Ru metal center. The catalyst design is modular in nature, which provided access to Ru complexes having varying tether lengths, as well as electronically different NHC ligands. Structural impacts of the tether length were unveiled through 1H NMR spectroscopy as well as single-crystal X-ray analyses. Catalyst activities were evaluated via polymerization of cyclooctene, and key data are provided regarding propagation rates, intramolecular chain transfer, and catalyst stabilities, three areas necessary for the efficient synthesis of cyclic poly(olefin)s via REMP. From these studies, it was determined that while increasing the tether length of the catalyst leads to enhanced rates of polymerization, shorter tethers were found to facilitate intramolecular chain transfer and release of catalyst from the polymer. Electronic modification of the NHC via backbone saturation was found to enhance polymerization rates to a greater extent than did homologation of the tether. Overall, cyclic Ru complexes bearing 5- or 6-carbon tethers and saturated NHC ligands were found to be readily synthesized, bench-stable, and highly active catalysts for REMP

Job Satisfaction among Academic Cataloger Librarians

This article details the results of a May 2007 study of job satisfaction of cataloger librarians at ARL member libraries in the United States. Eighty-eight percent of the cataloger librarians studied were satisfied with their current job and the majority would make the same career choice again. Job facets that cataloger librarians found most important were the benefits package, relationships with coworkers, and opportunities to learn new skills. Catalogers wanted to be treated fairly, be consulted about issues directly related to their work, be informed about current activities in their department, have their opinions respected and considered, and have an administration that supports catalogers. Topics for future research are suggested

Current State of Weed Management in Organic and Conventional Cropping Systems

Crop losses due to weeds result in reduced yields and quality and increases in harvest costs. Weed management often requires major resource inputs to produce a successful crop. Herbicides are central to the conventional approach to weed management, and they have allowed the grower to reduce management priority, time, effort, and cost of managing weeds. Their use has at times come at a price such as herbicide-resistant weeds, environmental damage, reduced water quality, and loss of genetic diversity. Although growers use a combination of management practices to control weeds, differences between those used in conventional agriculture compared to organic production systems often vary widely in their implementation and relative importance. Approaches to weed management within an organic system revolve around implementing a range of techniques, often consecutively over the course of the cropping rotation. For both organic and conventional growers, weed management remains a significant impediment to optimizing crop yield, improving crop quality, and reducing the costs of production

2,2′-[1,5-Bis(4-amino­phen­yl)-1,5-dihydro­benzo[1,2-d;4,5-d′]diimidazole-2,6-di­yl]diphenol

The title mol­ecule, C32H24N6O2, has a crystallographic inversion centre in the middle of the benzodiimidazole core. It exists as the enol–imine tautomeric form and exhibits a strong intra­molecular O—H⋯N hydrogen bond. The dihedral angles between the planes of the 2-hy­droxy­phenyl and 4-amino­phenyl substituents and the plane of the benzodiimidazole unit [12.69 (8) and 84.71 (8)°, respectively] differ significantly due to steric reasons. In the crystal, mol­ecules are linked by C—H⋯π inter­actions, forming a two-dimensional network