Evaluation of the stressed-state of a bed based on emission memory effects of rocks in near-well space

Mining Institute, Moscow. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 26–29, March–April, 1991.     

Study of natural and industrial electromagnetic fields for predicting ejection hazatds during mining of carnallite

Institute of Mining, Moscow. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 78–83, January–February, 1991.     

Characteristic features of the corrosion and protection of heat-exchange equipment

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 10, pp. 30–34, October, 1991.     

A sorter-based architecture for a parallel implementation of communication intensive algorithms

This paper deals with the parallel execution of algorithms with global and/or irregular data dependencies on a regularly and locally connected processor array. The associated communication problems are solved by the use of a two-dimensional sorting algorithm. The proposed architecture, which is based on a two-dimensional sorting network, offers a high degree of flexibility and allows an efficient mapping of many irregularly structured algorithms. In this architecture a one-dimensional processor array performs all required control and arithmetic operations, whereas the sorter solves complex data transfer problems. The storage capability of the sorting network is also used as memory for data elements. The algorithms for sparse matrix computations, fast Fourier transformation and for the convex hull problem, which are mapped onto this architecture, as well as the simulation of a shared-memory computer show that the utilization of the most complex components, the processors, is O(1).     

Heat transfer and diffusion of a passive impurity in turbulent air motion in mine workings

Makeevka Scientific-Research Institute, Makeevka. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 89–97, January-February, 1992.     

Computerised trace method for establishing equations for dimensions and tolerances in design and manufacture

A computerised trace method has been developed for determining the relationships of assembly requirements with design dimensions and tolerances of the components in an assembly, and the relationships of design specifications and machining allowance requirements with manufactured dimensions and tolerances of the component in a process plan. This method traces from the proposed components or planned operations only the dimensions and tolerances that affect the given requirement, and therefore the equations for design or for manufacture can be established simultaneously and accurately. Hence it is possible to establish constraints for the optimisation of dimensions and tolerances for design or for manufacture.     

PROMOTING LOW INCOME HOUSING THROUGH INNOVATIONS IN LAND USE REGULATIONS

ABSTRACT: Many analysts argue that important structural conditions exist that discourage city governments from engaging in redistributive policy, especially programs that create direct costs for private developers. Labeled the limited city argument, this logic concludes that only cities with sufficient levels of economic and fiscal well-being can afford to impose upon private developers to meet social needs. Using survey data from 133 cities with populations over 100,000, this paper examines land use regulations that impose obligations or restrictions on the private sector to promote low income housing. The data suggest that the limited city argument is only part of the explanation. The use of regulatory housing policy is also correlated with measures of need and low income housing advocacy.     

Quantification of Three Cholesterol Oxidation Products in Raw Meat and Chicken

Raw veal, beef, pork, and chicken muscle tissues were extracted by a modified dry column procedure in which silicic acid was incorporated in the trap of the column. This method separated cholesterol derivatives from the bulk of neutral lipids, phospholipids and cholesterol. Isolation of sterols by preparative thin layer chromatography followed by quantification by direct on-column capillary gas chromatography permitted measurement of 7-ketocholesterol, cholesterol 5α, 6α-epoxide, and cholesterol 5β 6β-epoxide at concentrations less than 1 ppm. All muscle tissues contained the three cholesterol products in measurable quantities. 7-Ketocholesterol constituted more than 50% of the oxidation products in all samples.