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The emergence of data driven approaches such as Deep Learning has led to novel application of various aspects of science and engineering. It has recently entered the field of ultrasound image beamforming. In this work we investigate neural networks tailored to create images of the quality of multiple compounded plane wave excitations from the data of the central angle (0°) excitation only. The proposed network is used to produce pixel-wise weights to weigh a standard delay-and-sum image from all channel data available to a pixel. It is found to produce higher quality images than the classical reference reconstruction from the 0° angle data.

Die Vornormenreihe DIN V 18599 wurde im Dezember 2011 vom verantwortlichen Gemeinschaftsausschuss im DIN neu herausgegeben. Die umfangreiche DIN-Reihe wurde durch einen Teil "Gebäudeautomation" ergänzt. Die normativ dokumentierten Algorithmen sind anwendbar für die energetische Bilanzierung von Wohn- und Nichtwohnbauten sowie für Neubauten und Bestandsbauten. Der Bilanzumfang der Norm ist schematisch dargestellt und in ihren einzelnen Teilgebieten erläutert.

Hydrogen peroxide is a commonly used oxidizing agent with a variety of uses depending on its concentration. Ingestion of hydrogen peroxide is not an uncommon source of poisoning, and results in morbidity through three main mechanisms: direct caustic injury, oxygen gas formation and lipid peroxidation. A case of a 39-year-old man who inadvertently ingested 250 mL of unlabelled 35% hydrogen peroxide intended for natural health use is presented. Hydrogen peroxide has purported benefits ranging from HIV treatment to cancer treatment. Its use in the natural health industry represents an emerging source for accidental poisonings.

箱9-00554 状(孔)1

identifier:2 identifier:KJ00004009743

This article argues that simultaneous equation systems, widely regarded as a standard formalisation of labour value theory, import equilibrium assumptions which rule out a realistic or consistent theory of price formation. An alternative, dynamic formalisation exists yielding time-varying or dynamic labour values free of such assumptions. We show that simultaneous equation systems, formally equivalent to neoclassical general equilibrium systems, cannot represent technical change or economic growth and apply only to hypothetical static economies in which neither the scale of output nor the technology changes. The resulting static values are a special, limiting case of dynamic values, which converge to them only tendentially and in the absence of technical change. Under conditions of technical change, dynamic values — and the prices and profit rates derived from them — differ systematically from those derived from simultaneous equation systems, and therefore provide a different foundation for economics. We show that the behaviour of dynamic values corresponds more closely to observed reality than either neoclassical equilibrium prices or static labour values by showing how, in a dynamic framework, the rate of profit can, and in general does, fall despite productivity-enhancing technical change. These results provide a rigorous foundation for the study of capital movements and technical change which is superior to conventional neoclassical price theory, calling for a radical reappraisal of the debate on value in this century.