Mexicana de Aviación Minatitlán, Ixtepec and Tapachula. In addition, new routes were opened to El Salvador, Costa Rica and Cuba, in addition to Nicaragua and Panama, made possible by their association with Pan Am via Pan Am's Miami base (Pan Am had undertaken flights from Mexico City to Miami.) Mexicana became the first foreign airline ever to fly to Los Angeles, when it began flights on January 3, 1936. The company expanded its fleet during that decade, with the addition of eight Fairchild FC2s and three Fokker F.10s. One of the Fokker F.10's, tail number X-ABCR, crashed at Miami on August 7, 1931
S transform S transform S transform as a time–frequency distribution was developed in 1994 for analyzing geophysics data. In this way, the "S" transform is a generalization of the short-time Fourier transform (STFT), extending the continuous wavelet transform and overcoming some of its disadvantages. For one, modulation sinusoids are fixed with respect to the time axis; this localizes the scalable Gaussian window dilations and translations in "S" transform. Moreover, the "S" transform doesn't have a cross-term problem and yields a better signal clarity than Gabor transform. However, the "S" transform has its own disadvantages: the clarity is worse than Wigner distribution function