Krzysztof Rakowski

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OBJECTIVES To assess the awareness and voluntary usage of the World Health Organization's Surgical Safety Checklist (WHO SSC), just prior to its mandatory implementation. DESIGN Questionnaire-based, prospective, telephone survey. SETTING Patients are exposed to systematic risks and principles of surgical safety are inconsistently applied even in(More)
A comparison of lossleess compression results is given for RGB, YC R C B and reversible JPEG 2000 color space. The paper describes the general conditions that rounding errors of a color transformation do not cumulate in the consecutive cycles of forward and inverse transformation. In particular, rounding errors of the RGB → YC R C B → RGB transformation do(More)
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