Practical Antenna Modeling

Here are the slides for a presentation given to The Valley Radio Club on May 3, 2019. The hope is that the slides contain enough detail that the reader could easily build and run the examples in 4NEC2. Practical Antenna Modeling Power Point Presentation Practical Antenna Modeling PDF format slides Using the NEC Codes With Examples [...]

States Must Adopt EU Pesticide Regulations to Stop Insect Extinction

The world is in the midst of an insect extinction crisis.  We've all heard about the plight of bees, but the plight of all insect fauna is much less widely appreciated.  The figure below is from a report in Science  a few years ago showing the precipitous decline in insects worldwide.[1] What beekeepers and naturalists [...]

Metamodern Meditation

I only recently ran into metamodernism, the new kid on the block ready to sweep postmodernism into the dust bin of intellectual movements.  This isn't my usual bailiwick, so it took me by surprise that I was pulled into this obscure corner of cultural criticism.   What's brought me here is the paucity of reasonable discussion these [...]

Threshold mechanisms in acetylcholine pathway insecticides and environmental safety

Overview Previously we looked at some of the basic principles of nervous system function and how chemicals from several pesticide classes disrupt normal function.  This time we will look in detail about what we can expect for a dose-response characterization of acetylcholine pathway insecticides based upon their mode of action and properties of the nervous system. [...]