The development of a cost model for predicting the performance of spatial joins has been identified in the literature as an important and difficult problem. In this paper, we present the first cost model that can predict the performance of spatial joins using R-trees. Based on two existing R-trees (join targets), our model first estimates the number of expected I/Os for the join process by assu...

broadening realization of the interconnectivity of well-being among species and ecosystems must bring new perspective to environmental health if we are to deal successfully with the dynamics of global change and human activity. Individuals might have interest and expertise in particular areas, but understanding the actions we must pro-actively take to enhance human and environmental health requ...

TOPIC: Cardiothoracic Surgery TYPE: Medical Student/Resident Case Reports INTRODUCTION: A 79-year-old female status post right lower lobe (RLL) resection one month prior presented with shortness of breath, cough, and fever despite antibiotic therapy. Initial chest CT revealed empyema. Curiously, each administration intrapleural fibrinolytic therapy tissue plasminogen activator (tPA) recombinant...

Interpreting pixel values as averages over abutting squares mimics the image capture process. Average Matching (AM) exact area resampling involves the construction of a surface with averages given by the pixel values; the surface is then averaged over new pixel areas. AM resampling approximately preserves local averages (error bounds are given). Also, original images are recovered by box filter...

BACKGROUND Qairooti (Cerate), a medicinal salve or ointment, compounded of wax and oil, is a formulation used alone or as a basis for medicinal dosage forms. It is widely used from the ancient times to the present. Based on its structure, beeswax has unique characteristics. It builds stable emulsions and increases water absorbance of creams and ointments. The aim of this study was to gather all...

This paper focuses on the enforcement of nonlinear constraints in Petri nets. First, a supervisory structure is proposed for a nonlinear constraint. The proposed structure consists of added places and transitions. It controls the transitions in the net to be controlled only but does not change its states since there is no arc between the added transitions and the places in the original net. Sec...

BACKGROUND Physicians in ancient Persia played an important role in the development of medicine in the medieval era. One of the most influential figures of this era was Abu Ali Sina or Ibn Sina, known as Avicenna in the western world. The author of more than 200 books on medicine and philosophy, Avicenna followed and further expanded on the tradition of western philosophy and medicine introduce...

To cite: Yong E, Chiu TF, Kamel H, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2016215348 DESCRIPTION A 68-year-old man was admitted after a sudden collapse and a 5-day history of severe vomiting. On admission, he was hypotensive with a blood pressure of 70/60 mm Hg and had to be fluid resuscitated with 3 L of intravenous fluids via a femoral venous cat...

Schistosomiasis remains an important public health problem worldwide. It is a parasitic disease endemic in over 70 countries and is estimated that the infection is responsible for more than 200,000 deaths annually (1,2). For Gryseels et al. inflammatory hepatic schistosomiasis is the main cause of hepatomegaly and severe splenomegaly in children and adolescents. The severity of disease is relat...

The scope of this chapter is to investigate the critical factors for the success of stock brokerage processes via the Web, using financial portals on the Brazilian Internet, from the perspective of the investor. The framework of the online stock trading system is presented in order to compare the traditional form of stock brokerage with that made possible by the Internet and discuss some of the...