The paper considers application and development of information technologies while carrying out project management in construction. Organizational and technological support of works throughout its life cycle exerts an influence on quality and efficiency of successful implementation of the construction project. In order to achieve the project goal it is necessary perfectly to organize and plan works, distribute roles and responsibilities of the project participants, regulate composition and content of the project documentation. While analyzing technical and economic indices of construction organization activity and management systems operating in these organizations, conclusion has been made that market experience in functioning of operational management systems has not been adequately applied in practice of domestic construction organizations. Thus, introduction of integrated management systems for quality, costs, time parameters pertaining to project construction, their resource support will contribute to improvement of economic situation of construction organizations. The solution consists in application of up-to-date information technologies, maximum implementation of computer systems and programs in the sphere of production, creation of application software. It has been shown that it is necessary to develop a software model that provides a possibility comprehensively to apply information technology tools for monitoring progress of construction and installation works, systematization of information technology application that allow to control key parameters of construction and installation works, improvement of system for providing actual information in project implementation process. An example of complex application of software products Primavera P6 Professional R8.3.2 and ArchiCAD 17.0.0 is given in the paper.
Since the idea of the allelopathy emerged the numerous works contributed to the formulation of the notional base in this area of knowledge. In the present review the large number of the novel allelopathical methods and approaches, developed for several recent decades, are analyzed. Furthermore various opinions on the subject, the forms, the mechanisms and the symptoms of the allelopathy are compared. The interdependence between the notions of ‘allelopathy’, ‘competition’ and ‘interference’ is discovered. The separate attention is paid to a) the principles of the realization of allelopathic interactions; b) the peculiarities in the approaches to the organization of the investigations; c) the significance of edaphic factor; d) the mediated influence of allelochemicals through the medium, where plants grow; e) the concept of the two-phases respond of the bioobjects – the hormesis and to some other interesting respects in the interpretation of the allelopathic phenomena. The controversial points of view on the possibility of synergism in the allelopathy are described. The great piece of the allelopathical works was focused on various aspects of release and chemical identification allelochemicals during the recent decades. Also the phytocenotical manifestations of the allelopathy were widely researched. The relationships of the plants-edificators with their subordinate species are reviewed. These papers mostly pertained to the extrusions of the native flora by the alien species. In some cases this entails the profound transformations of the ecosystems. Because such phenomena pose a risk, the control of the invasive flora involves the considerable costs. It gives the idea that of the edaphic factor considerably takes part in the development of the allelopathic processes (especially, soil biota, mycorhizzal fungi, free-living microorganisms, moisture and humus). They can strongly modify the character and intensity of the allelochemical-induced effects. The roles of both mycorrhiza and free-living microflora in the development of the allelopathic processes are discussed. The first of them often is regarded as the target and the canal of the alleviated transport for the allelochemicals, and the second one – as the sink for them. Particularly the common mycorhizza network is analyzed as the factor of the facilitation of the allelochemical transport between the plants (even if they belong to different species). Some researches are devoted the fungi as the target for the allelochemicals impact. The essential research direction in the recent decade was the determination of the precise chemical mechanisms, causing the allelopathy. It was comprehensively shown by the example with cathechin. The action of this substance was studied in the biophysical, cell-biological and physiological points of view. Some papers testify the stimulatory and other – the depressive effect of catechin. It appears that the degree of the soil toxicity can vary in the result of the habitat alternation of the same allelopathic donor-species. The temperature factor plays the similar role for the effect of the putative allelochemicals. The current ideas about the probable mechanisms of plant adaptation to the allelopathical stresses are presented.
Аннотация. Цель статьи -исследование возможностей зарубежных стажировок российских студентов.Методы. В работе использовались общенаучные методы теоретического исследования -анализ и синтез.Результаты. На примере опыта международного сотрудничества ин-женерно-строительного факультета ФГБОУ ВПО «Ижевский государственный технический университет им. М. Т. Калашникова» анализируется процесс вхождения российских вузов в европейское образовательное пространство. Описано обучение студентов кафедры «Промышленное и гражданское строи-тельство» во время стажировок в Брненском техническом университете. Это обучение осуществляется согласно программе Европейского союза «Непре-рывное образование» (Lifelong Learning Programme), которая, в свою очередь, включает несколько некоммерческих программ по обмену студентами и пре-подавателями, в том числе «Эразмус Мундус» (Erasmus Mundus), доступную университетам практически всех стран мира. Дана краткая оценка препода-ваемым в чешском университете научным дисциплинам. Расширено понятие зарубежных стажировок студентов при подготовке будущих выпускников по направлению «Строительство». Обозначены как явные, сегодняшние, так и бу-дущие выгоды от подобных стажировок.Научная и практическая значимость. Разработаны рекомендации по организации стажировок студентов в зарубежных вузах.Ключевые слова: зарубежные стажировки студентов, европейский об-разовательный процесс.
A number of forms of Aesculus hippocastanum L. are resistant to chestnut leaf miner (CLM) Cameraria ohridella Deschka and Dimić. Here, we studied the influence of grafting scions and rootstock of such forms on persistence of that resistance. Obtaining seedling material by grafting is effective in 60-70 % of cases. Grafted horse-chestnut scions resistant to CLM on two-year old rootstock of vulnerable forms were more susceptible to the pest. Leaves of grafted plants demonstrate signs of deformations and damage associated with CLM for the first two years of vegetation after grafting. CLM infection of plants is accompanied with the increasing concentrations of chlorophylls a and b, and carotenoids. The content of total phenols and catechins also increases in infected leaves. This indicates a restructuring of the secondary metabolism associated with the synthesis of phenolic compounds and terpenoids. Such partial damage together with the increased content of condensed tannins in leaves of CLM-resistant form of horse chestnut confirms the inability of tannins to protect the plant from CLM. It is shown that CLM caterpillars can hydrolyze phenols, in particular proanthocyanidins. Based on our experimental data, phenols are thought to be fermented by intestinal enterobacteria of CLM caterpillars.
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