255 research outputs found
The principles and methods of the appraisal of commercialization projects of the Universities innovations
The article deals with the summing up of the foreign experience and modern Russian tools of the appraisal of commercialization new technologies, worked up at UniversitiesyesБелгородский государственный университе
Nonlocal Scalar Quantum Field Theory: Functional Integration, Basis Functions Representation and Strong Coupling Expansion
Nonlocal QFT of one-component scalar field in -dimensional
Euclidean spacetime is considered. The generating functional (GF) of complete
Green functions as a functional of external source , coupling
constant , and spatial measure is studied. An expression for GF
in terms of the abstract integral over the primary field
is given. An expression for GF in terms of integrals
over the primary field and separable Hilbert space (HS) is obtained by means of
a separable expansion of the free theory inverse propagator over the
separable HS basis. The classification of functional integration measures
is formulated, according to which trivial and
two nontrivial versions of GF are obtained. Nontrivial versions
of GF are expressed in terms of -norm and -norm,
respectively. The definition of the -norm generator is suggested.
Simple cases of sharp and smooth generators are considered. Expressions for GF
in terms of integrals over the separable HS with new integrands
are obtained. For polynomial theories and for
the nonpolynomial theory , integrals over the separable HS in
terms of a power series over the inverse coupling constant for
both norms (-norm and -norm) are calculated. Critical values of model
parameters when a phase transition occurs are found numerically. A
generalization of the theory to the case of the uncountable integral over HS is
formulated. A comparison of two GFs , one in the case of
uncountable HS integral and one obtained using the Parseval-Plancherel
identity, is given.Comment: 26 pages, 2 figures; v2: significant additions in the text; prepared
for the special issue "QCD and Hadron Structure" of the journal Particles;
v3: minimal corrections; v4: paragraphs added related to Reviewer comment
Open Ground Collections of Saint Petersburg Botanic Garden for the Benefit of Botanic and Environmental Education
Botanic gardens with their rich collections and scientific resources have a unique potential that attracts the attention of the society to the problems of preserving biodiversity, ensuring environmental education, conserving nature, providing leisure, serving the place for relaxation and entertainment. One of the oldest Botanic gardens of Russia is the Saint Petersburg Botanic Garden of the Komarov Botanic Institute of the Russian Academy of Sciences demonstrates the experience of utilizing the open ground collections for Botanic and environmental education. The experts share various aspects of interaction between a Botanic garden and its visitors. The paper provides examples of excursions and other forms of work on the open ground. The paper analyzes the experience of foreign colleagues related to the motivation for visiting Botanic gardens by different age and social groups. The authors provide data of sociological surveys of visitors and the analysis of their motives to visit the Saint Petersburg Botanic Garden in particular. It also shows the growth of interest in the open ground collections
The principles and methods of the appraisal of commercialization projects of the Universities innovations
The article deals with the summing up of the foreign experience and modern Russian tools of the appraisal of commercialization new technologies, worked up at UniversitiesyesБелгородский госуниверсите
Self-Diffusion in Random-Tiling Quasicrystals
The first explicit realization of the conjecture that phason dynamics leads
to self-diffusion in quasicrystals is presented for the icosahedral Ammann
tilings. On short time scales, the transport is found to be subdiffusive with
the exponent , while on long time scales it is consistent
with normal diffusion that is up to an order of magnitude larger than in the
typical room temperature vacancy-assisted self-diffusion. No simple finite-size
scaling is found, suggesting anomalous corrections to normal diffusion, or
existence of at least two independent length scales.Comment: 11 pages + 2 figures, COMPRESSED postscript figures available by
anonymous ftp to black_hole.physics.ubc.ca directory outgoing/diffuse (use bi
for binary mode to transfer), REVTeX 3.0, CTP-TAMU 21/9
Proactive monitoring system for investment projects: mathematical support
Using mathematical based evaluation systems will help ranking investment projects to select the best and most promising among the available. Based on the study, the author sees it best to apply mathematical models and concentrate on conceptual investment projects for reducing monitoring and evaluation costs, as well as initial development costs. Optimal ways to form expert groups for investment project proactive monitoring is offered in conclusio
Exact Solution of an Octagonal Random Tiling Model
We consider the two-dimensional random tiling model introduced by Cockayne,
i.e. the ensemble of all possible coverings of the plane without gaps or
overlaps with squares and various hexagons. At the appropriate relative
densities the correlations have eight-fold rotational symmetry. We reformulate
the model in terms of a random tiling ensemble with identical rectangles and
isosceles triangles. The partition function of this model can be calculated by
diagonalizing a transfer matrix using the Bethe Ansatz (BA). The BA equations
can be solved providing {\em exact} values of the entropy and elastic
constants.Comment: 4 pages,3 Postscript figures, uses revte
Analysis of heat-cogeneration turbine unit operation in schemes of preliminary treatment of makeup water
The new scheme of preliminary treatment of makeup water of various technological purposes at parallel work of turbine units with heat release to external consumers has been offered. Variants of work of one of the existing and offered schemes are compared and analyzed. Use of the developed scheme in comparison with the existing one allows cutting fuel consumption up to 15...16 % or 31 thousand tons of equivalent fuel per heating season
Decision-Making for the Supply Chain Management in Conditions of Economic Turbulence
Abstract— The decision-making process for supply chain management is complex and involves multiple people across multiple teams. This article deals with the problem of choosing an optimal management solution in a turbulent economy. We systematise new management risks in the context of a pandemic are systematized. A method for constructing an integral risk assessment function for managerial decision-making is proposed. We identify aneed for an expert community to make more informed decisions has been identified. The research propose a simulation of new management risks in the context of a pandemic is proposed. Specific supply chains are faced with the situation where they have to accept uncertainty but need to develop a strategy that enables them still to match supply and demand. Hence, this research works in this direction and identifies various supply chain strategies to match demand and supply efficiently and effectively
Mineral Concentrates As a Factor of the Khibiny Apatite-Nepheline Ores Efficiency Improvement
Apatite-nepheline ores of the Khibiny deposits contain the largest phosphorus-bearing resources in the world, and, at the same time, they contain associated valuable components in the rock-forming minerals — apatite, nepheline, sphene and titanium magnetite. Intensive development of the Khibiny deposits with production of only apatite concentrate and a small part of nepheline concentrate resulted in the accumulation of over 1.0 billion tons of wastes in tailing storage facilities and dumps during 90 years of JSC Apatit operation. The possibility of increasing the efficiency of the use of the main concentrates of apatite-nepheline ores of the Khibiny deposits and wastes for their processing is considered through the use of technological developments of the FRC KSC RAS, JSC RIFI and JSC Apatit to obtain traditional and new target products. A fundamentally new approach to the problem of sustainable use of natural resources is focused on establishment of the whole production chain in the region, from mining and processing operations to manufacturers of final high technology products (rare-earth products, welding and construction materials, coloring agents and other materials). They also determine the level of industrial technical progress.
Keywords: Khibiny apatite-nepheline ores, mineral raw materials, extraction and processing, new material
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