106,655 research outputs found
JACOBSON RADICAL ALGEBRAS WITH QUADRATIC GROWTH
No full textWe show that over every countable algebraically closed field K there exists a finitely generated K-algebra that is Jacobson radical, infinite-dimensional, generated by two elements, graded and has quadratic growth. We also propose a way of constructing examples of algebras with quadratic growth that satisfy special types of relations.</p
Selected Bibliography of Harold K. Jacobson
No full textA bibliography of Professor Harold K. Jacobson\u27s selected work
Joshua Davis: Author of Spare Parts
No full textCitation: K-State First (2016). Joshua Davis: Author of Spare Parts [Flier]. Manhattan, Kansas: K-State First.Flyer advertising Joshua Davis's author talk at Kansas State University
Proper Ferroelectricity in the Dion?Jacobson Material CsBi2Ti2NbO10: Experiment and Theory
No full textA diverse range of materials and properties are exhibited by layered perovskites. We report on the synthesis, characterization, and computational investigation of a new ferroelectric?CsBi2Ti2NbO10, an n = 3 member of the Dion?Jacobson (DJ) family. Structural studies using variable temperature neutron powder diffraction indicate that a combination of octahedral rotations and polar displacements result in the polar structure. Density functional theory calculations reveal that the wider perovskite blocks in CsBi2Ti2NbO0 stabilize proper ferroelectricity, in contrast to the hybrid-improper ferroelectricity reported for all other DJ phases. Our results raise the possibility of a new class of proper ferroelectric materials analogous to the well-known Aurivillius phases
Steven Johnson Author Talk Poster
No full textK-State Book NetworkA poster advertising an author talk by Steven Johnson at Kansas State University on September 3, 2014. Steven Johnson's book "The Ghost Map" was the 2014-2015 common book
Medicinal chemistry of the a(3) adenosine receptor: agonists, antagonists, and receptor engineering
No full textA(3) adenosine receptor (A(3)AR) ligands have been modified to optimize their interaction with the A(3)AR. Most of these modifications have been made to the N(6) and C2 positions of adenine as well as the ribose moiety, and using a combination of these substitutions leads to the most efficacious, selective, and potent ligands. A(3)AR agonists such as IB-MECA and Cl-IB-MECA are now advancing into Phase II clinical trials for treatments targeting diseases such as cancer, arthritis, and psoriasis. Also, a wide number of compounds exerting high potency and selectivity in antagonizing the human (h)A(3)AR have been discovered. These molecules are generally characterized by a notable structural diversity, taking into account that aromatic nitrogen-containing monocyclic (thiazoles and thiadiazoles), bicyclic (isoquinoline, quinozalines, (aza)adenines), tricyclic systems (pyrazoloquinolines, triazoloquinoxalines, pyrazolotriazolopyrimidines, triazolopurines, tricyclic xanthines) and nucleoside derivatives have been identified as potent and selective A(3)AR antagonists. Probably due to the "enigmatic" physiological role of A(3)AR, whose activation may produce opposite effects (for example, concerning tissue protection in inflammatory and cancer cells) and may produce effects that are species dependent, only a few molecules have reached preclinical investigation. Indeed, the most advanced A(3)AR antagonists remain in preclinical testing. Among the antagonists described above, compound OT-7999 is expected to enter clinical trials for the treatment of glaucoma, while several thiazole derivatives are in development as antiallergic, antiasthmatic and/or antiinflammatory drugs
On a conjecture of Fink and Jacobson concerning k-domination and k-dependence
No full textAbstractA set D of vertices of a graph is k-dependent if every vertex of D is joined to at most k−1 vertices in D. Let βk(G) be the maximum order of a k-dependent set in G. A set D of vertices of G is k-dominating if every vertex not in D is joined to at least k vertices of D. Let γk(G) be the minimum order of a k-dominating set in G. Here we prove the following conjecture of Fink and Jacobson: for any simple graph G and any positive integer k, γk(G) ≤ βk(G)
Harold K. Jacobson (1929-2001): An Appreciation
No full textHarold Jacobson was born in Detroit onJune 28,1929. He attended high school in Wyandotte, Michigan, and received a bachelor\u27s degree in history from the University of Michigan. He married his Michigan schoolmate Merelyn Jean Lindbloom in 1951, a year after he started graduate school at Yale.
He was fundamentally an optimist about human behavior; he opened his path-breaking text, Networks of Interdependence, with the words, This is an optimistic book, though I hope not an unrealistic one.
Thus did Jacobson begin a career-long association with many whose work was rooted in international law. This interest led to fruitful collaborations and innovative contributions to the international law literature.
His insatiable curiosity, open-mindedness, delight in discovery, and appreciation of people were grounded in a strong sense of his own community and identity.
An inspired and devoted teacher, Jacobson achieved excellence by fostering it
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