Petri nets have been recognized as a powerful, graphical, and mathematical tool and widely used to model flexible manufacturing systems (FMS). To solve the problem of deadlock prevention for timed Petri nets (TdPN), an effective deadlock prevention policy based on the transition priority is presented in this poster. By analyzing reachability graphs of TdPN, a new class of TdPN named TdS 3 PRC i...

Mucoid strains of Pseudomonas aeruginosa that overproduce the exopolysaccharide alginate are a frequent cause of chronic respiratory infections in cystic fibrosis (CF) patients. The overproduction of alginate by these strains is often caused by mutations within mucA of the algU mucABCD gene cluster. This gene cluster encodes an extreme stress response system composed of the ECF alternative sigm...

Carcass data from 6,795 Simmental-sired animals born from 1992 to 2001 were used to determine whether adjustment to a constant age, back-fat, HCW, or marbling score would result in differences in heritability of the carcass traits and, correspondingly, if EPD calculated using those variance components and adjustments would result in sire reranking. The endpoints were age (EPA), backfat (EPF), H...

The susceptibility of ring networks to disconnection as a result of one or two node/link failures has led to a number of proposals to increase the robustness of such networks. One class of proposals, discussed primarily in the networking and communication communities, but also advocated for use in parallel and distributed systems, involves the provision of a second ring to improve system throug...

A phase resetting curve (PRC) measures the transient change in the phase of a neural oscillator subject to an external perturbation. The PRC encapsulates the dynamical response of a neural oscillator and, as a result, it is often used for predicting phase-locked modes in neural networks. While phase is a fundamental concept, it has multiple definitions that may lead to contradictory results. We...

Previous studies have shown that platelet concentrates used in conjunction with appropriate growth media enhance osteogenic differentiation of human mesenchymal stromal cells (hMSCs). However, their potential in inducing osteogenesis of hMSCs when cultured in serum free medium has not been explored. Furthermore, the resulting osteogenic molecular signatures of the hMSCs have not been compared t...

BACKGROUND The Prevention Research Centers Healthy Aging Research Network (PRC-HAN), funded by the Centers for Disease Control and Prevention's (CDC's) Healthy Aging program, was created in 2001 to help develop partnerships and create a research agenda that promotes healthy aging. The nine universities that participate in the network use their expertise in aging research to collaborate with the...

OBJECTIVE To evaluate the contribution of six polymorphisms to the platelet reactivity in patients with acute coronary syndrome (ACS) treated with clopidogrel. METHODS Cross-sectional study of 278 consecutive patients with ACS. Detailed clinical information for each patient was collected and genotypes (CYP2C9*2, CYP2C9*3, CYP2C19*2, CYP2C19*17, CYP3A4*1B, and PON1-Q192R) were evaluated with T...

BACKGROUND AND OBJECTIVES Low perceived control (PC) and overestimations of controllability have each been related to obsessive compulsive (OC) symptoms and behaviour. OC beliefs and symptoms are also associated with a discrepancy between low perceived control (PC) and a high desire for control (DC). The present study sought to examine the influence of components of PC, low control-related self...

OBJECTIVE Multiple therapeutic modalities exist for giant cell tumors (GCT) in the distal radius. The majority of GCTs are amenable to curettage, with the expanded lesions requiring a more radical approach. This case report examines the technique of managing a GCT that has extended beyond the boundaries of the cortex and into local tissues. The decision to use arthroplasty versus arthrodesis an...