OLAP cubes are a powerful database technology to join tables and aggregate data to discover interesting trends. However, OLAP cubes exhibit limitations to uncover fractional relationships on a measure aggregated at multiple granularity levels. One prominent example is the percentage, an intuitive probablistic metric, used in practically every analytic application. With such motivation in mind, ...

The capacity control of a vapor-compression refrigeration system is investigated for three different capacity control schemes. In a hot-gas by-pass control scheme, the refrigerant is by-passed from the compressor and injected back into the suction line to decrease the cooling capacity, whereas in cylinder-unloading scheme, one or more cylinders are unloaded to decrease the refrigerant mass flow...

Acting as a cleaning and great efficiency fuel, natural gas has gained more and more notice. Reflect on the low percentage of natural gas usage in China, how to motivate natural gas production and usage from macroeconomic view worth discussing. Although carbon tax can be efficiently used to promote carbon emission reduction, the implementation of levying carbon tax might negatively impact natur...

In the present study, we proposed a modification in one of the most frequently applied effect-size procedures in single-case data analysis: the percentage of nonoverlapping data. In contrast with other techniques, the calculus and interpretation of this procedure are straightforward and can be easily complemented by visual inspection of the graphed data. Although the percentage of nonoverlappin...

In 17 patients with adult respiratory distress syndrome, we used data derived from computed tomographic (CT) scan densitometric analysis to validate the value of portable chest roentgenograms in objectively estimating the amount of pulmonary edema. Chest roentgenograms and CT scans were taken in the same ventilatory conditions (apnea at 10 cm H2O of positive end-expiratory pressure [PEEP]); blo...

Our life is completely dependent on a reliable and adequate supply of energy. In other to reduce dependence on fossil fuels, the use of animal dung in producing a renewable alternative source of energy has been proved using cow dung. This work is aimed at produced and refined bio gas from animal dung by reduces the H2S and CO2 content of bio gas in other to improved the quality of the bio gas t...

background although there are various methods for painless delivery such as using entonox gas, most of the people are unfamiliar or concerned about it yet. objectives the purpose of this study was to assess maternal expectations and experience of labor analgesia with nitrous oxide. patients and methods in a clinical trial study, 98 pregnant women in active phase of delivery were studied randoml...