How Management Accounting Can Help Environmental Firms

Our recent study of management accounting systems for startups demonstrated that properly designed and implemented tools are linked with greater chances of business success. These systems can help environmental startups overcome failure

Impact of Human Immunodeficiency Virus in the Pathogenesis and Outcome of Patients with Glioblastoma Multiforme.

BackgroundImprovement in antiviral therapies have been accompanied by an increased frequency of non-Acquired Immune Deficiency Syndrome (AIDS) defining malignancies, such as glioblastoma multiforme. Here, we investigated all reported cases of human immunodeficiency virus (HIV)-positive patients with glioblastoma and evaluated their clinical outcomes. A comprehensive review of the molecular pathogenetic mechanisms underlying glioblastoma development in the setting of HIV/AIDS is provided.MethodsWe performed a PubMed search using keywords "HIV glioma" AND "glioblastoma," and "AIDS glioma" AND "glioblastoma." Case reports and series describing HIV-positive patients with glioblastoma (histologically-proven World Health Organization grade IV astrocytoma) and reporting on HAART treatment status, clinical follow-up, and overall survival (OS), were included for the purposes of quantitative synthesis. Patients without clinical follow-up data or OS were excluded. Remaining articles were assessed for data extraction eligibility.ResultsA total of 17 patients met our inclusion criteria. Of these patients, 14 (82.4%) were male and 3 (17.6%) were female, with a mean age of 39.5±9.2 years (range 19-60 years). Average CD4 count at diagnosis of glioblastoma was 358.9±193.4 cells/mm3. Tumor progression rather than AIDS-associated complications dictated patient survival. There was a trend towards increased median survival with HAART treatment (12.0 vs 7.5 months, p=0.10).ConclusionOur data suggests that HAART is associated with improved survival in patients with HIV-associated glioblastoma, although the precise mechanisms underlying this improvement remain unclear

Leveraging IT Resources, Embeddedness, and Dependence: A Supplier\u27s Perspective on Appropriating Benefits with Powerful Buyers

The relationships between suppliers and buyers are often characterised by power differentials and dependence at the same time. This leads to the ability of a powerful buyer to benefit more from the relationship than the supplier. We examine how a supplier can strengthen its use of relation-specific IT with embeddedness to appropriate its share of relational benefits. We developed and tested a model of supplier relation-specific IT use, embeddedness, and buyer dependence on supplier. The results showed that embeddedness did not lead directly to the sharing of relational benefits; rather the appropriation of relational benefits is derived from buyer dependence

Leveraging IT Resources, Embeddedness, and Dependence: A Supplier\u27s Perspective on Appropriating Benefits with Powerful Buyers

The relationships between suppliers and buyers are often characterised by power differentials and dependence at the same time. This leads to the ability of a powerful buyer to benefit more from the relationship than the supplier. We examine how a supplier can strengthen its use of relation-specific IT with embeddedness to appropriate its share of relational benefits. We developed and tested a model of supplier relation-specific IT use, embeddedness, and buyer dependence on supplier. The results showed that embeddedness did not lead directly to the sharing of relational benefits; rather the appropriation of relational benefits is derived from buyer dependence

Controlling antiferromagnetic domains in patterned La0.7Sr0.3FeO3 thin films

Transition metal oxide thin films and heterostructures are promising platforms to achieve full control of the antiferromagnetic (AFM) domain structure in patterned features as needed for AFM spintronic devices. In this work, soft x-ray photoemission electron microscopy was utilized to image AFM domains in micromagnets patterned into La0.7Sr0.3FeO3 (LSFO) thin films and La0.7Sr0.3MnO3 (LSMO)/LSFO superlattices. A delicate balance exists between magnetocrystalline anisotropy, shape anisotropy, and exchange interactions such that the AFM domain structure can be controlled using parameters such as LSFO and LSMO layer thickness, micromagnet shape, and temperature. In LSFO thin films, shape anisotropy gains importance only in micromagnets where at least one extended edge is aligned parallel to an AFM easy axis. In contrast, in the limit of ultrathin LSFO layers in the LSMO/LSFO superlattice, shape anisotropy effects dominate such that the AFM spin axes at micromagnet edges can be aligned along any in-plane crystallographic direction

An axisymmetric view of concentric eyewall evolution in Hurricane Rita (2005)

J. Atmos. Sci., 69 2414-2432The article of record as published may be located at http://dx.doi.org/10.1175/JAS-D-11-0167.

The flavour singlet mesons in QCD

We study the flavour singlet mesons from first principles using lattice QCD. We explore the splitting between flavour singlet and non-singlet for vector and axial mesons as well as the more commonly studied cases of the scalar and pseudoscalar mesons.Comment: 12 pages, LATEX, 4 ps figure