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We propose a new architecture for trust management in ubiquitous environments that deals with RBAC policy, digital signatures, and user presence in a uniform framework. The proposed architecture includes inferences about user presence from incomplete sensor signals based on the hidden Markov model. We implemented a prototype system for a connection service(More)
To elucidate the significance of uncompacted myelin lamellae (UML) and ion channel disruption at the nodes of Ranvier in the polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes (POEMS) syndrome, we evaluated sural nerve biopsy specimens from 33 patients with POEMS syndrome and from 7 control patients. Uncompacted myelin(More)
The newly recognized entity IgG4-related disease (IgG4-RD) is characterized by an elevated IgG4 serum concentration, swelling of organ, and tissue infiltration by IgG4-positive plasma cells with fibrosis. IgG4-RD has been reported in various organs. In the field of neurology, hypophysitis and hypertrophic pachymeningitis have been known to be related to(More)
A patient with chronic alcoholism presented with myelopathy and low serum folate and cobalamin levels. A 42-year-old alcoholic man had gait disturbance for 4 months. A neurological examination revealed marked spasticity with increased deep tendon reflexes and extensor plantar responses of the lower limbs. His cobalamin level was decreased and his serum(More)
OBJECTIVE To evaluate the pathologic significance of immunoglobulin G4 (IgG4) in patients with inflammatory peripheral neuropathy. METHODS We clinicopathologically examined 149 consecutive patients with peripheral neuropathy who had clusters of inflammatory cells with or without vasculitis in sural nerve biopsy specimens and in whom we were able to assess(More)
OBJECTIVE To examine the morphology of Schwann cells and endoneurial microvessels with electron microscopy. METHODS Sural nerve biopsy specimens from 49 patients with familial amyloid polyneuropathy (FAP) with transthyretin Val30Met mutation were assessed. Patients included 11 early-onset cases from endemic foci and 38 late-onset cases from nonendemic(More)
OBJECTIVE To examine intraepidermal nerve fibre densities (IENFDs) in patients with polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy and skin change (POEMS) syndrome. METHODS The IENFDs of 11 patients with POEMS syndrome were estimated. We determined whether IENFD was associated with patient clinical features or the estimated number of(More)
OBJECTIVE The clinical significance and characteristics of neuropathy caused by folate deficiency remain to be established. METHODS We examined the clinicopathologic features of 18 consecutive patients with neuropathy caused by folate deficiency who presented with low serum folate levels but normal blood thiamine and serum cobalamin levels in the absence(More)
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