Invisible Johnny

Statement Johnny

As researchers, one of our common goals is to expand our reach and our capabilities as human beings through the development of new technologies and new ideas. Often we use immense resources to explore this new territory. However, an unfortunate side effect of this essential activity is that the number of individuals that can participate in this search becomes smaller and smaller as the resource...

Why Johnny Won't Visualize

Accelerator Experiments for Astrophysics ∗ Johnny

Many recent discoveries in astrophysics involve phenomena that are highly complex. Carefully designed experiments, together with sophisticated computer simulations , are required to gain insights into the underlying physics. We show that particle accelerators are unique tools in this area of research, by providing precision calibration data and by creating extreme experimental conditions releva...

Why Johnny can't or Won't Spreadsheet

This paper reports the results from a study on spreadsheet program use conducted in several departments within a city administration. Fourteen volunteer participants began the study by taking a two-day course on the spreadsheet program in question. The purpose of t.he project was to study spreadsheet program use longitudinally in a natural setting. That only three of the fourteen participants b...

Optimality and Existence for Lipschitz Equations Johnny

Solutions of certain boundary value problems are shown to eIst for the fn-l) nth order dI.ferantlal equation Y (n)__ f(t,y,y’,...,y ), where f is contIauois oa a slab (a,b) Rn and f atlsfles a Lipschltz cond[tkon on the slab. Optimal length subintervals of (a,b) are deter:nlned, [ tems of the Lipschitz coefficients, on which there e[st u[que solutions.