Stephanie J. Cammarata

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Distributed Artificial Intelligence is concerned with problem solving in which groups solve tasks. In this paper we describe strategies of cooperation that groups require to solve shared tasks effectively. We discuss such strategies in the context of a specific group problem solving application: collision avoidance in air traffic control. Experimental(More)
BACKGROUND Accumulation in the brain of small aggregates of amyloid beta-protein 42 (Abeta42) is the major pathogenic event of Alzheimer disease (AD). In familial early-onset AD this event is likely the result of Abeta42 overproduction; in the most common sporadic late-onset form of the disease the mechanisms of Abeta42 accumulation are unknown. METHODS(More)
The prevalence, causal origin of and impairments associated with severe mental retardation (SMR) were investigated among all school-age children (six to 13 years) living in the city of Bologna, Italy. 90 children (57 boys, 33 girls) with IQs less than or equal to 50 were identified. The prevalence of SMR was 4.2 per 1000 for males, 2.5 per 1000 for females(More)
BACKGROUND Patients with chronic heart failure (HF) and with elevated depression symptoms are at greater risk of morbidity and mortality. Somatic symptoms of depression are particularly prevalent in HF and are related to worse disease prognosis. T'ai chi practice is related to increased emotional well-being in various clinical populations; however,(More)
Neurofibrillary tangles (NFTs), a hallmark of Alzheimer disease, are commonly located in perikarya of neurons. In advanced cases of Alzheimer disease, however, NFTs are observed also in the extracellular space. As extracellular NFTs (E-NFTs), and occasionally intracellular NFTs (I-NFTs), are recognized by antibodies to beta-amyloid protein (beta AP), beta(More)
In cases of progressive supranuclear palsy (PSP) and Alzheimer's disease (AD) the treatment of tissue sections with formic acid (FA) disclosed a neurofilament epitope in subcortical straight (SF) and paired helical (PHF) filaments. The same treatment produced a two-fold increase of tau-reactive neuropil threads and plaque-related neurites in AD cortical(More)
We immunocytochemically analyzed pieces of olfactory mucosa removed by biopsy in 8 patients with probable Alzheimer's disease (AD) and 6 age-matched controls, with tau and ubiquitin antisera. There were tau-reactive and, partially, ubiquitin-reactive dystrophic neurites in the lamina propria of olfactory mucosa in all AD cases. The tau-reactive neurites(More)
The abnormal neurites that surround beta-amyloid in senile plaques (SP) in Alzheimer disease contain beta-amyloid precursor protein (beta APP) or abnormal filaments which react with antibodies to tau. Occasionally, beta APP and abnormal filaments are present in the same neurite. Whether both types of abnormal neurites are reactive to the presence of(More)
The prevalence of mental retardation related to chromosomal abnormalities, including fragile X syndrome, was studied among 2735 males aged between five and 20 years living in the Republic of San Marino. Five cases of chromosomal abnormalities were found, including one case with fragile X syndrome, with partial epilepsy and a CT scan showing a large(More)