40 research outputs found
Nonperturbative proof of the non-Abelian anomalies
No full textWe give a nonperturbative derivation of non-Abelian anomalies
Copy of a letter from John T. Cunningham to Senator Kenneth C. McKellar, 1933-04-08
No full textCopy of a typed letter from John T. Cunningham in Clarksville, Tennessee to Senator Kenneth D. McKellar in Washington, D.C. Cunningham is telling the Senator that E.B. Trahern will be in Washington, D.C. the following week. Trahern is concerned about the Farm Bill and how it may effect his business. Cunningham says he would be grateful if McKellar can help him in anyway
Geographic profiling in Nazi Berlin: fact and fiction
No full textGeographic profiling uses the locations of connected crime sites to make inferences about the probable location of the offender’s ‘anchor point’ (usually a home, but sometimes a workplace). We show how the basic ideas of the method were used in a Gestapo investigation that formed the basis of a classic German novel about domestic resistance to the Nazis during the Second World War. We use modern techniques to re-analyse this case, and show that these successfully locate the Berlin home address of Otto and Elise Hampel, who had distributed hundreds of anti-Nazi postcards, after analysing just 34 of the 214 incidents that took place before their arrest. Our study provides the first empirical evidence to support the suggestion that analysis of minor terrorism-related acts such as graffiti and theft could be used to help locate terrorist bases before more serious incidents occur
A comparative study of freeze-thaw processes for conditioning wastewater and water treatment sludges
No full textThis research effort involved the application of indirect- and direct-contact, freeze-thaw conditioning techniques for improving the dewatering characteristics of both wastewater and water treatment sludges. Sludges tested included waste activated sludge, primary sewage sludge, waste activated/primary sewage sludge mixtures and alum sludge. The direct-freeze methods examined were the use of a secondary refrigerant (butane) evaporated in the sludge and the use of gas hydrate or clathrate formation by addition of Freon 12 under appropriate temperature and pressure conditions. Sludges were also frozen solid using indirect freezing methods, thawed and tested for comparative purposes. Particle size distribution and floc density measurements were used to determine changes in particle characteristics; specific resistance values and dewatered dry solids concentration were used to assess dewatering characteristics. Results of direct- and indirect-contact, freeze-thaw conditioning were compared to the effects of polymer conditioning. The results indicated that direct-freeze methods do not appear technically or economically competitive with currently accepted conditioning methods. The superior results obtained with the indirect-contact, freeze-thaw process when compared to the direct-contact processes suggested that the extent and rate of freezing may greatly influence the particle characteristics of the conditioned sludge, and thus its dewatering characteristics.Ph. D
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Relational databases for RHIC design and control
No full textThe preliminary organization of data via relational databases for the design and control of the Relativistic Heavy Ion Collider (RHIC) is described
Coloured Monopoles From Fractional Charges in OCD
No full textIn a recent paper, Slansky et al. have suggested that SU(3)c may be broken to SO(3) X Z, in order to explain the possible existence of fractionally charged states. We point out that there are low mass monopoles associated with such a symmetry breakdown and discuss their properties. Such states may be observable at LEP if not at PETRA energies
Generalized Bohr-Sommerfeld rules for anomalies with applications to symmetry breakdown and decoupling
No full textIn the presence of anomalies, the requirement that a classical symmetry group G has a proper action on the fermion measure or in the effective Lagrangian description imposes Bohr-Sommerfeld conditions on the anomalies, and often implies that G is broken to a subgroup H as well. We show these results in this paper and apply them to QCD and SU(5). In particular, constraints on the QCD order parameter are derived, and an argument is presented which suggests that the breakdown of the chiral flavor symmetry and the emergence of some sort of generation structure in QCD may be natural
