Center of Twisted Graded Hecke Algebras for Homocyclic Groups

We determine explicitly the center of the twisted graded Hecke algebras associated to homocyclic groups. Our results are a generalization of formulas by M. Douglas and B. Fiol in [J. High Energy Phys. 2005 (2005), no. 9, 053, 22 pages, hep-th/9903031]

Twisted Graded Hecke Algebras for Elementary Abelian Groups

Twisted graded Hecke algebras were introduced by S. Witherspoon as a common generalization of graded Hecke algebras and twisted symplectic reflection algebras. In this thesis, the structure and representation theory of twisted graded Hecke algebras for elementary abelian groups are studied. Such an algebra A is finitely generated as a module over its center. Moreover, for a generic central character χ, there exists a unique simple A-module on which the center acts by χ

Twisted Graded Hecke Algebras for Elementary Abelian Groups

Twisted graded Hecke algebras were introduced by S. Witherspoon as a common generalization of graded Hecke algebras and twisted symplectic reflection algebras. In this thesis, the structure and representation theory of twisted graded Hecke algebras for elementary abelian groups are studied. Such an algebra A is finitely generated as a module over its center. Moreover, for a generic central character χ, there exists a unique simple A-module on which the center acts by χ

The Determinants of REIT Cash Holdings

REIT, Cash, Liquidity, Cash flow, Working capital, G12, G14, G24,

Net Operating Working Capital Behavior: A First Look

"Net operating working capital captures multiple dimensions of firms' adjustments to operating and financial conditions. Sales growth, uncertainty of sales, costly external financing, and financial distress encourage firms to pursue more aggressive working capital strategies. Firms with greater internal financing capacity and superior capital market access employ more conservative working capital policies. Results are robust to unobserved heterogeneity and industry effects. The evidence suggests that operating and financing conditions should be considered when evaluating working capital behavior, not just industry averages. Additionally, industry concentration magnifies the effect of sales growth". Copyright (c) 2010 Financial Management Association International.

Making Cataño Count

The School of City and Regional Planning at Georgia Tech hosted its second iteration of its Planning Studio master’s requirement in Puerto Rico in Spring of 2020. This year’s studio focused on the United States Decennial Census efforts for 2020. Puerto Rico, as an underrepresented territory within the United States, was a driving motivator for this project. The studio was assigned to Cataño, a small municipality just across the bay from the capital, San Juan. Cataño faces disproportionate levels of hard-to-count and underrepresented populations within the greater metropolitan area. Both the Cataño government and Puerto Rican Planning Board were assigned as the studio’s clients

Deformed Wing Virus Implicated in Overwintering Honeybee Colony Losses ▿

The worldwide decline in honeybee colonies during the past 50 years has often been linked to the spread of the parasitic mite Varroa destructor and its interaction with certain honeybee viruses. Recently in the United States, dramatic honeybee losses (colony collapse disorder) have been reported; however, there remains no clear explanation for these colony losses, with parasitic mites, viruses, bacteria, and fungal diseases all being proposed as possible candidates. Common characteristics that most failing colonies share is a lack of overt disease symptoms and the disappearance of workers from what appears to be normally functioning colonies. In this study, we used quantitative PCR to monitor the presence of three honeybee viruses, deformed wing virus (DWV), acute bee paralysis virus (ABPV), and black queen cell virus (BQCV), during a 1-year period in 15 asymptomatic, varroa mite-positive honeybee colonies in Southern England, and 3 asymptomatic colonies confirmed to be varroa mite free. All colonies with varroa mites underwent control treatments to ensure that mite populations remained low throughout the study. Despite this, multiple virus infections were detected, yet a significant correlation was observed only between DWV viral load and overwintering colony losses. The long-held view has been that DWV is relatively harmless to the overall health status of honeybee colonies unless it is in association with severe varroa mite infestations. Our findings suggest that DWV can potentially act independently of varroa mites to bring about colony losses. Therefore, DWV may be a major factor in overwintering colony losses