The refresh rate of two-dimensional tactile information for visual impaired people using electrorheological (ER) technology is directly related to the flow an ER valve. bigger is, faster refreshed. For a parallel electrodes valve configuration, due limitation Braille standard width valve, gap channel which also only adjustable parameter benefit and at same time enhance operating voltages contri...

The problem of uniqueness universal formulae for (quantum) dimensions simple Lie algebras is investigated and connection some these functions with geometrical configurations, such as the famous Pappus–Brianchon–Pascal $$(9_3)_1$$ configuration points lines, established by proposing generic functions, which multiplied a dimension formula, preserve both its structure values at from Vogel’s table....