Computational steering is a technique that combines simulation and visualization. The user is continuously provided with visual feedback about the state of the simulation, and can change parameters on the y. Designers can vary parameters to optimize their product, users can detect errors in the input early, researchers can do qualitative sensitivity analyses easily. The implementation of comput...

This paper presents a comprehensive discussion on connected morphological operators for binary images. Introducing a connectivity on the underlying space, every image induces a partition of the space in foreground and background components. A connected operator is an operator that coarsens this partition for every input image. A connected operator is called a grain operator if it has the follow...

We present a method for the deenition of multiple views in 3D interfaces for computational steering. The method uses the concept of a point-based parametrizable camera object. This concept enables a user to create and conngure multiple views on his custom 3D interface in an intuitive graphical manner. Each view can be coupled to objects present in the interface, parametrized to (simulation) dat...

Cover Art Caption: Odor emission from swine facilities is a major issue for the pork industry. Here, air samples are taken to determine the impact of reducing dietary crude protein concentration through the use of crystalline amino acids on odor emission into building air. The effects of type of housing (stalls versus pens) and method of heat detection (fence-line boar exposure conducted in-pla...

T HE sixth International Neuromuscular Meeting was held in Paris in August. The original meeting, in London in 1975, was to act as a forum for investigators and industry (Burroughs Wellcome and Organon) in the hope that such a liaison would lead to the development of muscle relaxants needed by the clinician. In so far as the intermediate relaxants, atracttrium and vecuronium, were developed, th...

The advent of image-guided, laparoscopic surgery in the United States began quietly enough in the 1960's. Certainly, the laparoscope was used for diagnostic and therapeutic purposes before then, but its use was limited. The marriage in 1960 of the Hopkin's rod-lens system and Storz laparoscope with its fiberoptic light delivery system enabled physicians to view body cavities with greater illumi...

T-network tuners are popular for matching antennas for 160 through 10 meters. Recent articles by Frank Witt, AI1H[1] and Andrew Griffith, W4ULD,[2] addressed how to measure tuner loss for various resistive loads; gave some example calculations and measurements; and showed how to adjust the tuner for minimum loss. Measuring your tuner’s loss is the only sure way to know, but by examining the wor...

Phenotypes produced by expression of human amyloid precursor protein (APP) transgenes vary depending on the genetic background of the mouse. FVB/N mice overexpressing human APP695 develop a central nervous system disorder and die prematurely, precluding development of Ab peptide amyloid plaques. 129S6 mice are resistant to the lethal effects of APP overexpression, allowing sufficient levels of ...