4,276 research outputs found

    Representing Spatial Geographical Data via variations of Volume and Tempo in Sound

    Get PDF
    The majority of spatial data are represented visually which can lead to an overload of information if too many data are represented. This study explores and evaluates the methods of representing spatial data using sound, with the aim of increasing the amount of spatial data that can be communicated without information overload. This study was performed for an undergraduate BSc Geograph

    The Relationship Between Congestion Control and the Turing Machine

    Full text link
    Unified large-scale epistemologies have led to many unfortunate advances, including cache coherence and 128 bit architectures. Given the trends in robust symmetries, cyberneticists shockingly note the refinement of e-commerce, demonstrates the exten- sive importance of artificial intelligence [1]. We understand how systems can be applied to the emula- tion of A* search. While it is entirely an essential purpose, it is derived from known results

    The a-number of hyperelliptic curves

    Full text link
    It is known that for a smooth hyperelliptic curve to have a large aa-number, the genus must be small relative to the characteristic of the field, p>0p>0, over which the curve is defined. It was proven by Elkin that for a genus gg hyperelliptic curve CC to have aC=g−1a_C=g-1, the genus is bounded by g<3p2g<\frac{3p}{2}. In this paper, we show that this bound can be lowered to g<pg <p. The method of proof is to force the Cartier-Manin matrix to have rank one and examine what restrictions that places on the affine equation defining the hyperelliptic curve. We then use this bound to summarize what is known about the existence of such curves when p=3,5p=3,5 and 77.Comment: 7 pages. v2: revised and improved the proof of the main theorem based on suggestions from the referee. To appear in the proceedings volume of Women in Numbers Europe-

    The Berry-Keating Hamiltonian and the Local Riemann Hypothesis

    Full text link
    The local Riemann hypothesis states that the zeros of the Mellin transform of a harmonic-oscillator eigenfunction (on a real or p-adic configuration space) have real part 1/2. For the real case, we show that the imaginary parts of these zeros are the eigenvalues of the Berry-Keating hamiltonian H=(xp+px)/2 projected onto the subspace of oscillator eigenfunctions of lower level. This gives a spectral proof of the local Riemann hypothesis for the reals, in the spirit of the Hilbert-Polya conjecture. The p-adic case is also discussed.Comment: 9 pages, no figures; v2 included more mathematical background, v3 has minor edits for clarit

    Scheme Considered Harmful

    Full text link
    Unified pervasive modalities have led to many unproven advances, including forward-error correction and the Ethernet [1, 1, 1, 2]. In fact, few security experts would disagree with the evaluation of spreadsheets, demonstrates the confusing importance of cryptography. We construct new game-theoretic modalities, which we call PETARD

    Preparation of ingots of uranium-niobium alloy

    Get PDF
    A study was made of the preparation of a uranium - 10 w/o niobium alloy by the bomb reduction of a suitable form of niobium and uranium tetrafluoride with calcium. A compound with a probable formula of Na2NbOF5 proved to be most satisfactory as the source of niobium. High yields and good metal-slag separations were obtained. Chemical analysis and density determinations showed the composition to be 10 ± 0.5 w/o niobium. Fifteen pounds of alloy were melted in BeO and cast into a graphite mold
    • …
    corecore