The article discusses the geometric aspects of the design and creation of parabolic-type solar radiation concentrators. Practical methods of geometric design and manufacturing of concentrators of this kind are presented. Parabolic type concentrator is the main part of the solar photovoltaic thermal installation. Its effectiveness depends on the quality factors of the geometric shaping of the working surface, composed of a set of parquet components, linked to each other on the basis of differential geometric requirements. The distribution of illumination in the focal spot of such a concentrator, made by parquet based on the constructive connection of individual elements, makes it possible to obtain acceptable results. However, there is considerable potential for improving performance by providing a smoother and more uniform illumination of the photodetector. To ensure the specified accuracy and smoothness of the rim of the surface at the stages of designing and manufacturing the device, two methods are proposed: orthogonal and fan-shaped geometric parquetting of the surface of a parabolic concentrator with the ability to pre-set the required shape accuracy for given rim geometrical characteristics. Parquetting with given differential requirements for the surface, in turn, provides for two methods for calculating parquet elements: first, by the minimum number of curvilinear elements followed by stitching, taking into account the differential conditions; the second is based on the maximum number of flat elements, the multiplicity of which provides acceptable smooth surface properties. In this paper, we consider the first method for cases of orthogonal and fan parquet. On the example of a parabolic concentrator, the implementation of the considered method is presented, which provides for the possibility of controlling the geometric smoothness of the concentrator surface in order to ensure optimal distribution of concentrated solar radiation in the focal region. The output characteristics of photovoltaic and thermal converters of solar energy, which are in the focus of such a concentrator, become optimal, and the installation itself will operate in nominal mode.
A recent discernible trend towards complication of legislative regulation of public relations and an active role of law-enforcement activity in interpretation of law under conditions of harmonization of the European law dictate the need of consideration of key issues of interrelation of court practice and the legislation not only on the basis of national law, but also taking into account a rich foreign experience. Both the European and the national legal doctrine treat court practice as an independent object of legal research. The issues of judicial rule-making are solved differently in doctrinal researches of various countries, which is caused both by legal traditions of specific system of justice development, and current development needs specific national systems of law. Identification of legal forms of interrelation of law-enforcement practice and the legislation makes it possible to formulate and understand, from the methodology point of view, significant principles and mechanisms of their interaction to determine efficient legal models of development of the legislation and the law-enforcement activity within a legal framework.
Legal regulation of proprietary interest in Estonia is associated with adoption of the Law “On the Proprietary Interest” in 1993, which has established the legal framework of the systemic proprietary interest regulation in the Estonian civil law. It must be noted that this law is distinguished by its substantive elaboration of general provisions on proprietary interest and individual elements of the system of proprietary rights (ownership, limited proprietary rights, possession), is prepared on the basis of consistent terminology and with the use of a ramified framework of categories and concepts of civil law. Insight into contents of the Law “On the Proprietary Interest” leaves no doubt as to its long-term elaboration and discussions, with involvement of the legal community and foreign experts, which, it is logical to assume, should have preceded its adoption. However, the reality is that the adoption of the Estonian law “On Proprietary Interest” was a rapid revolutionary step of the national legislators in the post-Soviet space, in the conditions of the crashed system of the socialist civil law and its guiding principles, which, in principle, had not been aware of any regulation of the system of proprietary rights and its individual elements. It is, certainly, possible to assume that the Estonian legislation has borrowed the provisions and institutions which had been regulated by the 1940 draft Civil Code of Estonia, which had been drawn up on the basis of the 1865 Code of Civil Legislations of Baltic (Ostsee) Provinces. However, it is impossible not to see as well that the Estonian law “On Proprietary Interest” has also apprehended the modern traditions of the continental European private law in regulation of certain institutions of proprietary interest, which evidences another manifestation of trends of harmonization and integration of civil law in Europe.
Codification of civil legislation is not a one-time random phenomenon in law; it is preceded by a long and meticulous work which in modern Russia pursues the aims of creating legislation sources’ system levels that ensure stable, large-scale and comprehensive legal regulation of market relations required by the turnover. Work on modernization and renewal of the Civil Code forms an integral part of codification, it shows dynamic development of the system of civil legislation. Objectives of the civil legislation codification in ХХ—ХХI involve elimination of contradictions in legislation, regulatory consolidation of new law doctrines, well-established in law enforcement practice, their structuring in the sources of civil legislation system, rationalization of legal regulations. Status of legislation and its evaluation predetermine the tendencies of its development in future, allow forecasting, designating possible risks and priorities of the law-making process.
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