STERNAL APPROXIMATOR: A NEW INSTRUMENT

New sternal puncture needle.

The needles most commonly used for obtaining bone marrow aspirates from the sternum are the Salah and Klima needles. They were designed in the 1930s, and except for the introduction of different kinds of stops and guards there has been no change in their basic structure and design. These instruments are small, do not fit properly in the operator's hand, and the lack of a T-bar handle often make...

An instrument for combined sternal biopsy and aspiration.

It is now universally agreed that examination of bone marrow aspiration material is essential for unravelling many haematological problems. In some cases, however, it is extremely difficult, or even impossible, to obtain specimens, as for example in the myelosclerotic and refractory anaemias. In the former, examination of the bone itself would be of value, and in the latter one would like to se...

A New Technique in Sternal Puncture

The Learning Dynamcis of a Universal Approximator

The learning properties of a universal approximator, a normalized committee machine with adjustable biases, are studied for on-line back-propagation learning. Within a statistical mechanics framework, numerical studies show that this model has features which do not exist in previously studied two-layer network models without adjustable biases, e.g., attractive suboptimal symmetric phases even f...

Cardplay, a New Textual Instrument

W e are exploring what it means to 'play' textual literature. We don't mean, by this, playing games that incorporate textual material within their structure but rather textual and literary structures for which play is a primary means of interaction. We are conducting our exploration both as creators and scholars of digital media. This paper discusses a number of related issues — including the n...