Wyniki wyszukiwania - Biblioteka Nauki

1

Evaluation of a heating system for buildings using multiple criteria decision analysis

100%

Mróz T. , Thiel T.

Archives of Civil Engineering

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2005

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tom Vol. 51, nr 2

281-298

EN

The criteria describing the problem of evaluation of the heating system for buildings have been proposed. The criteria have an open character, and it is the decision maker who indicates which will be taken into account, so that those accepted for the evaluation of variants may allow for a thorough description of the analysed problem. The analysis of the final number of technically acceptable solutions, based on the final number of describing criteria, can help indicate the most compromised choice of the heating system. Therefore, one of the multicriteria methods of decision aiding has been proposed. The research uses ELECTRE III which allows for a multicriteria assessment of a heating system for an educational building.

PL

Zaproponowano kryteria, jakie mogą być uwzględniane przy rozwiązywaniu problemów decyzyjnych dotyczących oceny systemu grzewczego w budynkach oraz podano sposób ich określania. Zbiór kryteriów ma charakter otwarty i od decydenta zależy, które kryteria uwzględni przy ocenie rozpatrywanych wariantów systemu grzewczego, tak by w sposób wyczerpujący opisać analizowany problem. Analiza skończonego zbioru dopuszczalnych technicznie rozwiązań oparta na skończonym zbiorze kryteriów opisujących jest pomocna w wyborze najbardziej kompromisowego rozwiązania. Stąd do rozwiązania problemów decyzyjnych, dotyczących oceny systemu grzewczego w budynkach, zaproponowano jedną z metod wielokryterialnego wspomagania podejmowania decyzji. Zastosowana metoda ELECTRE III pozwoliła na rozwiązanie problemu decyzyjnego wyboru źródła ciepła dla wybranego budynku edukacyjnego.

2

Anomalous relaxation in dielectrics. Equations with fractional derivatives

80%

Novikov V. V. , Wojciechowski K. W. , Komkova O. A. , Thiel T.

Materials Science Poland

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2005

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tom Vol. 23, No. 4

977--984

EN

It has been shown that anomalous relaxation in dielectrics can be described in terms of equations with fractional derivatives. The solutions of the resulting equation with fractional derivatives are expressed by the Mittag-Leffler function and the Fox function. The conditions of a change from the Debye relaxation to "slow" (anomalous) relaxation with a power time dependence have been examined in the limits t › 0 and t › ∞.

3

In silico analysis on frequency and distribution of microsatellites in ESTs of some cereal species

70%

Varshney R. K. , Thiel T. , Stein N. , Langridge P. , Graner A.

Cellular and Molecular Biology Letters

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2002

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tom 07

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nr 2A

EN

During the last decade microsatellites or SSRs (simple sequence repeats) have been proven to be the markers of choice in plant genetics research and for breeding purposes because of their hypervariability and ease of detection. However, development of these markers is expensive, labour intensive and time consuming, in particular, if they are being developed from genomie libraries. In the context of large-scale sequencing and genomics programmes in various cereal species at different laboratories, a large set of expressed sequence tags (ESTs) is being generated, which can be used to search for microsatellites. Keeping in view the importance of such type of SSRs, available ESTs of some cereal species like barley, maize, oats, rice, rye and wheat were investigated for a study of abundance, frequency and distribution of various types of microsatellites. SSRs were present in about 7% to 10% of the total ESTs in the investigated cereal genomes. On the basis of surveying EST sequences amounting to 75.2 Mb in barley, 54.7 Mb in maize, 43.9 Mb in rice, 3.7 Mb in rye, 41.6 Mb in sorghum and 37.5 Mb in wheat, the frequency of SSRs was 1/7.5 kb in barley, 1/7.5 kb in maize, 1/6.2 kb in wheat, 1/5.5 kb in rye and sorghum and 1/3.9 kb in rice. The overall average SSR frequency for these species is 1/6.0 kb. Trimeric repeats are the most abundant (54% to 78%) class of microsatellites followed by dimeric repeats (17% to 40%). Among the trimeric repeats the motifs CCG are the most common in all the cases ranging from 32% in wheat to 49% in sorghum. When all these SSRs were analysed for assessing their potential to develop new markers, unique primer pairs could be designed for 30% to 70% of the total non-redundant microsatellites which are up to 3% of total ESTs in the studied species.