[en] This paper will describe methods of implementing such windows for: (1) DCL and MAIL; (2) Command Procedures; and (3) the VMS V4.0 editors EDT, LSE and TPU. While VMS and a number of utilities have the SPAWN command available to the user, the window interface to be described has been found in practice to be simpler to use because: (1) windows are consistently invoked with a single key command; and (2) confusion is minimized because one always knows if one is in a window

[en] A new technique for the deconvolution of gamma-ray logs is introduced. It is equally as efficient as the inverse filter method but has the advantage that no theoretical assumptions are made about the nature of the gamma-ray impulse response of the logger

[en] I show that the basic structure of symplectic integrators is governed by a theorem which states precisely, how symplectic integrators with positive coefficients cannot be corrected or processed beyond second order. All previous known results can now be derived quantitatively from this theorem. The theorem provided sharp bounds on second-order error coefficients explicitly in terms of factorization coefficients. By saturating these bounds, one can derive fourth-order algorithms analytically with arbitrary numbers of operators

[en] Artifacts are random or systematic errors in scintigraphic images. The causes of artifacts include detector or imaging equipment failure, improper methodological procedure, pathophysiological condition of the patient, or improperly chosen radiopharmaceutical. Some artifacts encountered in practice or simulated are demonstrated

[en] The coordinates of the supernova of AD 1572 have been recomputed from the original measurements of Tycho Brahe, Thomas Digges, and Michael Maestlin, in an attempt to investigate the positional discord between the supernova and its remnant. It is suggested that the discrepancy apparent from Tycho Brahe's measurements can be attributed to a small systematic error in his instrument and/or his observational technique. (author)

[en] We comment on a fatal flaw in the analysis contained in the work of Martínez-y-Romero et al., [J. Math. Phys. 54, 053509 (2013)], which concerns the motion of a point particle in an inverse square potential, and show that most conclusions reached there are wrong. In particular, the manifestly senseless claim that, in the attractive potential case, no bounded orbits exist for negative energies, is traced to a sign error. Several more mistakes, both in the classical and the quantum cases, are pointed out

No abstract available

[en] We introduce a new notion of tensor product of functionals and apply it to problems of numerical integration. We find the exact orders of the errors arising on various classes of functions, some of which are known and some are new

[en] In this work, we have developed a different algorithm than the classical one on phase-shifting interferometry. These algorithms typically use constant or homogeneous phase displacements and they can be quite accurate and insensitive to detuning, taking appropriate weight factors in the formula to recover the wrapped phase. However, these algorithms have not been considered with variable or inhomogeneous displacements. We have generalized these formulas and obtained some expressions for an implementation with variable displacements and ways to get partially insensitive algorithms with respect to these arbitrary error shifts.

[en] Kholmetskii, Missevitch and Yarman correct an error that appeared in my recent note on Faraday's law and present an alternative derivation of the law. The wrong step in the derivation is pointed out. (letters and comments)