A novel approach to solving the nearest neighbor search problem in metric space is considered. It is proposed as a data structure to use a graph with navigable small world properties and a gradient descent algorithm as a search algorithm. The problem of the existence of local minima is solved by a series of independent searches. Experimental data are presented to confirm logarithmic complexity of the search algorithm.
The article considers the theme of American South in Caroline Gordon’s «None Shall Look Back» (1937). As many Southern of writers 1930s (S. Young, A, Lytle, A. Tate, M. Mitchell, W. Faulkner), C. Gordon felt nostalgia for the patriarchal South and was sure that the Civil of 1861 – 1865 was the region’s tragedy. She tried to create her own history of the South, show not only the plantations interiors, landscapes, and daily routine of their inhabitants but also people in battlefields.
The goal of the paper is to determine the place of «None Shall Look Back» in Southern literary tradition of 1930s. In its ideology, topics and system of images the novel fits into Southern literary canon. The motifs of doom and fatality are prevailing in the text. Gordon did not get over the Southern mythology, but her novel may be of great interest for historians and literary critics.
The article discusses various approaches to overcoming technical barriers in trade with the formation of the common economic space and unification of technical regulation in the framework of the EvrAsEC
A possibility to develop a high-resolution terahertz (THz) spectrometer for a wide range of tasks is considered. The proposed spectrometer consists of a synthesizer based on a Gunn generator and a frequency multiplier based on a semiconductor superlattice as a radiation source, as well as a NbN hot-electron bolometer in a direct-detection mode as a THz radiation receiver. We present some experimental results for the spectrometer: the absorption lines of H 2O (1.92 THz, 17 th harmonic) and of HDO (1.49 THz, 13 th harmonic) have been registered. The results obtained are analyzed and further prospects to improve the spectrometer characteristics are considered.