A heat generating body has a first electrode and a second electrode arranged opposed to each other, and also has a mesh-like electrically conductive membrane mounted in a curved surface shape between the first electrode and the second electrode. The fundamental component of the architecture is a frame relay protocol-based switch, which employs a network interface frame relay standard to define the multiplexing of multiple virtual ports across single physical communications port. The bicycle rack also includes a lower rear wheel support that rotates simultaneously with the upper front wheel support between an unfolded deployed configuration extending outwardly from an upstanding main support bar and a collapsed compact configuration lying adjacent the upstanding main support bar. To reduce the humidity sensitivity of the medium, a non-ionizable or crystalline polymer may be used as the continuous phase. The retaining sleeve includes an annular groove. In some embodiments, the language model is discriminatively pruned by computing a discriminative objective function value for one or more n-grams in the language model, and selecting one or more n-grams to prune based at least in part on a threshold value.