We introduce a method for characterizing the expressive power of concept expressions in rst-order description logics. The method is essentially model-theoretic in nature in that it gives preservation results uniquely identifying a wide range of description logics as fragments of rst-order logic. The languages studied in the paper all belong to the well-known FL and AL hierarchies.

The contribution of abnormal cardiac function to hypotension and metabolic acidosis, which affect approximately 40% of ventilated very low birthweight infants in the first 24 hours after birth was assessed using M mode, two dimensional, and Doppler echocardiography in 75 very low birthweight infants during the first few hours after birth. Thirty four infants whose blood pressure was less than t...

OBJECTIVES To estimate the costs and potential efficiency gains of changing the frequency of clinic appointments and drug dispensing arrangements for stable HIV patients compared to the costs of hospital pharmacy dispensing and home delivery. METHODS We estimated the annual costs per patient (HIV clinic visits and either first-line treatment or a common second-line regimen, with some patients...

We retrospectively reviewed the charts of all of our patients with a history of partial seizures, with and without secondarily generalisation, who received levetiracetam (LEV; Keppra) for treatment of their seizures during the years 2000-2002. Forty-five patients were identified, 13 of whom began LEV as first line therapy. Eleven patients continued on LEV for at least 6 months; six of whom beca...

This paper deals with a new, efficient power flow method for unbalanced radial distribution systems based on improved backward/forward sweep (BFS) algorithm. This proposed method utilizes simple and flexible numbering scheme and takes full advantage of the radial structure of distribution systems. This method is tested on an 8-bus Three-phase unbalanced distribution system. The numerical test p...

OBJECTIVE To assess the possibility of laparoscopic management of cervical agenesis. DESIGN Case report. SETTING Patient recruited from a tertiary referral hospital. PATIENT(S) Adult female with diagnosis of cervical agenesis. INTERVENTION(S) Laparoscopic uterovaginal anastomosis. MAIN OUTCOME MEASURE(S) The patency of the anastomosis site was assessed with hysteroscopy. RESULT(S) P...

The BRAF mutant colorectal cancer subgroup is a small population with unique clinicopathological and molecular features. This subgroup has been associated with particularly poor prognosis and advanced disease. The poor response of these patients to available treatments has driven much of the effort in trialling combination targeted treatments involving BRAF and MEK inhibitors. Most recently, an...

Nutritional support in the elderly not only co-operates in pharmacological treatment but also very often is a primary therapy for their health. The type of artificial nutrition (AN) to use will depend on the present illness and the previous health record. Due to the fact that enteral feeding (EF) is less expensive and aggressive we should use EF whenever possible, leaving parenteral nutrition (...

Software product Line (SPL) is an emerging methodology for developing software products. Stage-configuration is one the important processes applying to the SPL. In stage-configuration, different groups and different people make configuration choices in different stages. Therefore, a successful software product is highly dependent on the validity of stage-configuration process. In this paper, a ...