Yes & No

In the following poem, the first and last stanzas use only those letters found next to even digits (2, 4, 6, 8) on the telephone dial, while the middle two stanzas use only odd ones (3, 5, 7, 9). This method of dividing the alphabet puts about twice as many words into the first group (which gets the vowels AIOU) compared to the second (which gets only EY), while Q and Z cannot be used at all

Knight\u27s-TourLetterSquares

In this article, I present a new subject for logological study: the knight\u27s-tour letter square. Such a square is constructed by first creating a knight\u27s tour on the chessboard, in which each square of the chessboard is visited exactly once by successive knight\u27s moves. Normally, knight\u27s tours are displayed by numbering the squares of the chessboard with the numbers 1 through 64 to show the knight\u27s path

The High Time Resolution Universe surveys for pulsars and fast transients

The High Time Resolution Universe survey for pulsars and transients is the first truly all-sky pulsar survey, taking place at the Parkes Radio Telescope in Australia and the Effelsberg Radio Telescope in Germany. Utilising multibeam receivers with custom built all-digital recorders the survey targets the fastest millisecond pulsars and radio transients on timescales of 64 us to a few seconds. The new multibeam digital filter-bank system at has a factor of eight improvement in frequency resolution over previous Parkes multibeam surveys, allowing us to probe further into the Galactic plane for short duration signals. The survey is split into low, mid and high Galactic latitude regions. The mid-latitude portion of the southern hemisphere survey is now completed, discovering 107 previously unknown pulsars, including 26 millisecond pulsars. To date, the total number of discoveries in the combined survey is 135 and 29 MSPs. These discoveries include the first magnetar to be discovered by it's radio emission, unusual low-mass binaries, gamma-ray pulsars and pulsars suitable for pulsar timing array experiments.Comment: Proceedings of IAUS 291 "Neutron Stars and Pulsars: Challenges and Opportunities after 80 years"; J. van Leeuwen (ed.); 6 pages, 2 figure

Vot Long Pati Ia! (Your vote, our party)

Review of the film "Vot Long Pati Ia!" The film is made by Wan Smolbag Theatre in Vanuatu and is a fascinating dramatization of political and developmental dilemmas in the South Pacific

Correspondence between sound propagation in discrete and continuous random media with application to forest acoustics

Although sound propagation in a forest is important in several applications, there are currently no rigorous yet computationally tractable prediction methods. Due to the complexity of sound scattering in a forest, it is natural to formulate the problem stochastically. In this paper, it is demonstrated that the equations for the statistical moments of the sound field propagating in a forest have the same form as those for sound propagation in a turbulent atmosphere if the scattering properties of the two media are expressed in terms of the differential scattering and total cross sections. Using the existing theories for sound propagation in a turbulent atmosphere, this analogy enables the derivation of several results for predicting forest acoustics. In particular, the second-moment parabolic equation is formulated for the spatial correlation function of the sound field propagating above an impedance ground in a forest with micrometeorology. Effective numerical techniques for solving this equation have been developed in atmospheric acoustics. In another example, formulas are obtained that describe the effect of a forest on the interference between the direct and ground-reflected waves. The formulated correspondence between wave propagation in discrete and continuous random media can also be used in other fields of physics