A data integration system (DIS) provides access to a set of heterogeneous data sources through a so-called global schema. There are basically two approaches for designing a DIS. In the global-as-view (GAV) approach, one defines the elements in the global schema as views over the sources, whereas in the local-as-view (LAV) approach, one characterizes the sources as views over the global schema. ...

BACKGROUND Plasma von Willebrand factor (vWF), a key player in hemostasis and thrombosis, is released from endothelial cells during inflammation. Hypertension, a progressing in chronic inflammation and cardiovascular syndrome with various causes, results in functional and structural changes of heart and arterial vessels. However little information is available on LA changes during hypertension....

BACKGROUND Premature ventricular contractions (PVCs) may cause subtle changes in left atrium (LA) structure and function which may not be readily detected by conventional parameters. AIM To explore the relationship between PVCs and LA shape and size remodelling in patients without known structural heart disease. METHODS PVC frequency per 24 h was divided into tertiles. Echocardiographic mea...

Local-As-View (LAV) mediators provide a uniform interface to a federation of heterogeneous data sources to attempt the execution of queries against the federation. LAV mediators rely on query rewriters to translate mediator queries into equivalent queries on the federated data sources. The query rewriting problem in LAV mediators has shown to be NP-complete, and there may be an exponential numb...

BACKGROUND Increased left atrial (LA) size is a prognostic marker of mortality in the general population. LA size varies considerably in patients with dilated cardiomyopathy (DCM), but its clinical significance has not been widely studied. OBJECTIVE To evaluate the long-term prognostic value of LA volume (LAV) in patients with DCM. METHODS We prospectively studied patients admitted from Jan...

A comprehensive study was initiated to examine the immunologic status of a sample (n = 47) of the asymptomatic hemophilia A and B populations of metropolitan Atlanta and to determine if any of the abnormalities changed with time or correlated with infection by human T cell leukemia virus type III and lymphadenopathy-associated virus (HTLV-III/LAV) or other viruses either alone or in combination...

Measles remains a major cause of child mortality, in part due to an inability to vaccinate young infants with the current live attenuated virus vaccine (LAV). To explore new approaches to infant vaccination, chimeric Venezuelan equine encephalitis/Sindbis virus (VEE/SIN) replicon particles were used to express the hemagglutinin (H) and fusion (F) proteins of measles virus (MV). Juvenile rhesus ...

Apart from strengthening crew protective capability gunfire, the hull obliquity in a light armoured vehicle (LAV) affects its weight and comfortable occupancy. Thus, it requires critical design analysis for obliqued hull. The study aims to present optimal of an structure ensure occupancy along with minimum attainable higher protection gunfire. Three geometric models (G1, G2, G3) were investigat...

AIMS We assessed the comparative value of measurements of tissue Doppler early diastolic mitral annular velocity (E'), left atrial diameter (LAD), and left atrial volume (LAV) in patients with possible heart failure (HF) but with normal left ventricular (LV) ejection fraction (EF) and mitral flow velocity pattern. METHODS AND RESULTS We determined LAV and LAD indexes in addition to the ratio ...