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Number of results: 8
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Abstract

The paper is organized into two sections. The first sets the background for data integration, and identifies some of the key issues that need to be considered. The second describes possible solutions of problems connected with the data integration. The steps of integrating data coming from different databases, datasets and data files are described in order to create a seamless geodatabase.
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Authors and Affiliations

Elzbieta Bielecka
ORCID: ORCID
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Abstract

For majority of running waters point pollution sources are the main sources of pollution. Knowing the water self-purification capacity one can modify the quality of waters through proper management of the discharged pollutants. This study focuses on identifying such solutions for pollutant discharge into the Kłodnica and Bytomka rivers, which would allow for achieving at least the Ill class of surface water quality. Simulation of selected wastewater management scenarios was carried out. The best solutions for the water environment were identified. Only environmental effects which resulted in improvement of the water quality were analyzed. The economical aspect of actions, the undertaking ofwhich is indispensable for achieving the assumed goal, was not taken into account. The selection of the best solutions considering the cost effectiveness cannot be made until a feasibility study for particular undertakings has been completed. Sal i nity and biodegradable pollutants determined by BOD coefficient were taken into consideration. The simulation was carried out using an integrated simulation model IRM (Integrated River Model). In order to protect the river from excessive salinity the optimum solution for the Bytomka River would be desalination, whereas for the Kłodnica River- directing salty mining waters outside its catchment. For protection from biodegradable pollutants the only solution would be tightening the effectiveness criteria for municipal wastewater treatment. Meeting the minimum standards for wastewater treatment, currently obligatory in municipal wastewater treatment plants, will not ensure the assumed water purity level in these rivers.
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Authors and Affiliations

Rudolf Bujok
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Abstract

The construction process of the tunnel ground deformation regularity of surrounding rock, stability, deformation control of tunnel surface based on the requirements, combined with the characteristics of shallow tunnel with large-span. Used three-dimensional numerical simulation software, established a dynamic tunnel analysis program to simulate the construction process of center cross-diagram method and double sidewall drift method. Based on the stratum deformation, supporting force and analysis of plastic zone distribution, comparative analysis of engineering adaptability of different construction methods from the construction process and construction mechanics, get optimization tunnel construction scheme.

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Authors and Affiliations

Jiao Pengfei
Xiao Zhang
Xinzhi Li
Bei Jiang
ORCID: ORCID
Bohong Liu
Haojie Zhang
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Abstract

A lot of interest has recently been put into the so-called ‘virtual cryptographic currencies’, commonly known as cryptocurrencies, along with its surrounding market. The blockchain technology that stands behind them is also becoming increasingly popular. From the perspective of maintaining energy security, an important issue is the process of mining individual cryptocurrencies, which is associated with very high energy consumption. This operation is usually related to the approval of new blocks in the blockchain network and attaching them to the chain. This process is carried out through performing complex mathematical operations by various devices, which in turn require high power and respectively consume a lot of energy. The impact of cryptocurrency miners on the power and energy demand level might gradually increase over time, therefore this issue shouldn’t be ignored. Comparing the above information in parallel with the growing need for providing demand side response (DSR) services in the Polish Power System, raises the question whether devices used for mining cryptocurrencies can be used for the purpose of balancing the power system. This paper presents an analysis of the possibility to provide the demand side response services by groups of cryptocurrency miners users. The analysis was carried out taking basic functional, technological and economical aspects of these devices’ operations into account.

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Authors and Affiliations

Damian Mrowiec
Piotr Saługa
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Abstract

The article presents the results of thermodynamic analysis of the supercritical coal-fired power plant with gross electrical output of 900 MW and a pulverized coal boiler. This unit is integrated with the absorption-based CO2separation installation. The heat required for carrying out the desorption process, is supplied by the system with the gas turbine. Analyses were performed for two variants of the system. In the first case, in addition to the gas turbine there is an evaporator powered by exhaust gases from the gas turbine expander. The second expanded variant assumes the application of gas turbine combined cycle with heat recovery steam generator and backpressure steam turbine. The way of determining the efficiency of electricity generation and other defined indicators to assess the energy performance of the test block was showed. The size of the gas turbine system was chosen because of the need for heat for the desorption unit, taking the value of the heat demand 4 MJ/kg CO2. The analysis results obtained for the both variants of the installation with integrated CO2separation plant were compared with the results of the analysis of the block where the separation is not conducted.
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Authors and Affiliations

Janusz Kotowicz
Łukasz Bartela
Mikosz Dorota
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Abstract

In the paper, a method for determination of the near-critical region boundary is proposed. The boundary is evaluated with respect to variations of specific heat capacity along isobars. It is assumed that the value of specific heat capacity inside the near-critical region exceeds by more than 50% the practically constant value typical for fluids under normal conditions. It appears that large variations of heat capacity are also present for high-pressure subcritical states sufficiently close to the critical point. Therefore, such defined near-critical region is located not only in supercritical fluid domain but also extends into subcritical fluid. As an example, the boundaries of the near-critical region were evaluated for water, carbon dioxide and R143a.

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Authors and Affiliations

Roman Kwidziński
Marian Trela
Dariusz Butrymowicz
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Abstract

The article focuses on the relationship between predicate‑argument (semantic) structure of verbs and their syntactic properties. This investigation concentrates on the semantic structure of the Polish verb rozmyślić się (‘to change one’s mind’) as a predicate of higer order (Px, q) and its syntactic characteristic. The analisys demonstrates that the content of the propositional argument q is expressed mainly in the context of the sentence and this fact makes the verb rozmyślić się an exceptional unit of the higer order preditcate set. The verb rozmyślić się is compared with the Polish and Bulgarian possible equivalents: zrezygnować and откажа се.
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Bibliography

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PELCRA: Wyszukiwarka korpusowa PELCRA dla danych Narodowego Korpusu Języka Polskiego [ http://www.nkjp.uni.lodz.pl ; dostęp 12.05.21].
Szymczak M., (red.), 1981, Słownik języka polskiego, vol. 3, Warszawa: PWN.
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Rechnik na balgarskia ezik, 2015, vol. 15, Sofia: Izdatelstvo na BAN „Prof. Marin Drinov”.

References

Apresyan Yu.D., 1974, Leksicheskaya semantika. Sinonimicheskiye sredstva yazyka, Moskva: Nauka.
Bogusławski A., 1974, Preliminaries for semantic‑syntactic description of basic predicative expressions with special reference to Polish verbs, [w:] O predykacji, red. A. Orzechowska, R. Laskowski, Wrocław: Ossolineum, pp. 39–57.
Duraj‑Nowosielska I., 2017a, Konteksty uwydatniające konflikty woli a walencja czasownika chcieć, „Prace Filologiczne”, vol. 70, pp. 171–192.
Duraj‑Nowosielska I., 2017b, Charakterystyka semantyczna wyrażeń ktoś zamierza coś zrobić/robić i ktoś ma zamiar coś zrobić/robić, „Prace Filologiczne”, vol. 70, pp. 193–207.
Karolak S., 1984, Składnia wyrażeń predykatywnych. [w:] Topolińska Z., (red.), Gramatyka współczesnego języka polskiego. Składnia, Warszawa: PWN, pp. 11–211.
Korytkowska M., 1990, Z problematyki składni konfrontatywnej – na przykładzie bułgarskich i polskich zdań bezpodmiotowych, Wrocław etc.: Zakład Narodowy im. Ossolińskich.
Korytkowska M., 1994, Modèle de la structure sémantique de la phrase dans une approche contrastive, “Révue des études slaves”, vol. 66, no. 3, pp. 557–565.
Zintegrowany opis semantyczno‑syntaktyczny czasowników bułgarskich, polskich i rosyj-skich 2019 = Kiklewicz A., Korytkowska M., Mazurkiewicz‑Sułkowska J., Zatorska A., Zintegrowany opis semantyczno‑syntaktyczny czasowników bułgarskich, polskich i rosyjskich (verba cogitandi i verba sentiendi), cz. I–II; red. M. Korytkowska, Warszawa: Instytut Slawistyki Polskiej Akademii Nauk Fundacja Slawistyczna. [ https://hdl.handle.net/20.500.12528/1087; dostęp 21.05.2021].

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Authors and Affiliations

Małgorzata Korytkowska
1
ORCID: ORCID

  1. Instytut Slawistyki Polskiej Akademii Nauk, Warszawa

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