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Publications from the year 2012
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The possible unreliability of self-efficacy beliefs and perceived control - when nascent entrepreneurs may be overconfident
- Paweł Ziemiański
poczucie samoskuteczności oraz poziom postrzeganej kontroli są istotnymi czynnikami decydującymi o wyborze działań oraz o wytrwałości w ich kontynuowaniu. zbyt wysokie poczucie samoskuteczności, które znacznie odbiega od faktycznej skuteczności oraz iluzja kontroli mogą powodować nadmierne zaangażowanie w działania, które mają znikome szanse powodzenia. artykuł przedstawia teoretyczną analizę znaczenia różnych źródeł poczucia samoskuteczności dla jego wiarygodności u początkujących przedsiębiorców oraz obrazuje jak czynniki sytuacyjne mogą decydować o występowaniu u nich iluzji kontroli.
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The Potential of Greed for Independence
- Piotr Borowiecki
- Frank Goering
- Jochen Harant
- Dieter Rautenbach
The well-known lower bound on the independence number of a graph due to Caro and Wei can be established as a performance guarantee of two natural and simple greedy algorithms or of a simple randomized algorithm. We study possible generalizations and improvements of these approaches using vertex weights and discuss conditions on so-called potential functions p(G) : V(G) -> N_0 defined on the vertex set of a graph G for which suitably modified versions of the greedy algorithms applied to G yield independent sets I with |I|>=Sum_{uinV(G)} 1/(p(G)+1). We provide examples of such potentials, which lead to bounds improving the bound due to Caro and Wei. Furthermore, suitably adapting the randomized algorithm we give a short proof of Thiele's lower bound on the independence number of a hypergraph.
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The project of pull system for storehouse and production line in a company provides electronics
- Przemysław Kitowski
The chapter below presents how to reduced delivery of the material to production by using a "Kanban schedule board" and related tools from 48 hours and 59 minutes to 41 minutes in a company provides electronics. The solution was found through analysis of the current way of supplying stands and using Just In Time idea, the reduction of ''muda''. To solve the problem was used Kanban card", which has the shape of two triangles joined together and forming a rectangle. Effects related to the implementation of the project can be divided to measurable and immeasurable. The department, in which the changes would be introduced, is called Simple Local Product.
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The properties, functions and use of selenium compounds in living organisms
- Małgorzata Bodnar
- Piotr Konieczka
- Jacek Namieśnik
Selenium occurs in the environment in inorganic and organic compounds. For many years it was regarded as a toxic element, causing numerous illnesses and diseases. But research in the last 50 years has revealed a "bright side" to this element, especially as a component of selenoproteins, selenium makes a significant contribution to the health of humans and animals. The selenium content in an organism depends on its concentration and bioavailability in the soil, and the differences between its deficiency, appropriate intake and excess are very slight. This paper gathers information from the literature on:• the consequences of a deficiency and an excess of selenium in the body, as well as the health-promoting mechanisms of selenium, including the functions of selenoproteins. • the uptake and transformation of selenium compounds by plants, because of the fact, that selenium is better assimilated from plant food, and also the classification of plants with respect to their ability to take up selenium from the soil and to accumulate it.
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The properties of polyurethanes based on synthetic polyhydroxybutyrate for medical application
- Joanna Brzeska
- Marek Kowalczuk
- Helena Janik
- Maria Rutkowska
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The recovery of cyanide from gold leach = Odzysk cyjanku w ługowaniu złota
- Jan Hupka
- Bartosz Dąbrowski
- Jan D. Miller
W artykule omówiono nową technologię odzyskiwania lub degradacji cyjanków z wykorzystaniem reaktora z wirującymi płynami. Testy polowe i próby laboratoryjne wykazały, że ta technologia może znaleźć zastosowanie do odpędzania i ponownej absorpcji HCN z wody procesowej powstającej w kopalni złota.
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The relationship between architectural detail and light in contemporary architecture
- Małgorzata Rogińska-Niesłuchowska
The paper deals with the influence of modern artificial and natural lighting technology on contemporary architecture, especially in relation to architectural detail. Advanced complex lighting systems have an increasing importance in contemporary design solutions. Light itself, and the effect of its actions, and characteristic parts of the sophisticated lighting systems, play an essential role as independent architectural elements, of different architectural scale. They impact the viewer’s visual perception of the building as well as the building’s proper functioning.
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The rheological properties of hydroxylated soybean oil by using bioglycols
- Ewa Głowińska
- Janusz Datta
- Józef Haponiuk
Praca zawiera opis właściwości fizykochemicznych i reologicznych hydroksylowanych olejów sojowych zmodyfikownych przy użyciu wybranych bioglikoli.
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The Role of FLT3 Kinase as an AML Therapy Target
- Michał Beffinger
- Anna Skwarska
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The Role of Greenery and Traffic Calming Measures in Planning of Road Infrastracture
- Joanna Żukowska
The role of greenery and traffi c calming measures in road infrastructure planning. The “life” of a town is connected with its infrastructure. So it is that, apart from serving their principal function, motorways, roads, airports and other facilities which make transport possible largely determine contemporary urban design. To achieve balanced forms of urban infrastructure that ensure comfort, safety and spatial order, it is necessary when designing new solutions to adopt a multifaceted approach that combines everything local residents need and maintains harmony with the existing cultural landscape. Development of this kind should be guaranteed by the town’s authorities and infrastructure administrators. It is therefore necessary to coordinate a number of complex undertakings when planning and developing urban space. The coherent and comprehensive implementation of planned road safety improvements should not only reduce the number and seriousness of accidents but should also lead to an improved quality of urban life and living conditions, more effi cient division of urban space, better traffi c fl ow for pedestrians and cyclists, changes in the behaviour of all road users, changes in the structure of the cargoes transported and greater use of safer means of transport. This paper deals with a concept for planning transport infrastructure based on the principle of establishing zones and shared spaces and presents examples of how roads and their environs can be planned in a town.
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The role of observatories in the integrated transport safety systems
- Joanna Żukowska
- Ryszard Krystek
Accurate knowledge about the causes, circumstances and place of transport accidents is the prerequisite to take the correct action to improve transport safety. Developing appropriate organizational structures, forms and methods of management and implementation of safety measures in the sectoral approach condition the success. Therefore, the Safety Information System is one of the integral areas of the Integrated Transport Safety System ZEUS.
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The role of slowly biodegradable organic compounds in a full-scale biological nutrient removal activated sludge systems
- Jakub Drewnowski
- Jacek Mąkinia
The aim of this study was to determine the immediate effects of slowly biodegradable substrates on the denitrification capability and phosphate release/uptake interactions for a full-scale biomass process from two large wastewater treatment plants (WWTPs) located in the cities of Gdansk and Gdynia (northern Poland). Since it is hard to distinguish the slowly biodegradable substrate in a direct way, a novel procedure based on batch experiments was developed and implemented. The laboratory experiments were carried out in two parallel, fully automatic batch reactors with the settled wastewater without pretreatment and after coagulation-flocculation with zinc sulfate. The observed specific process rates were comparable at both studied plants and the removal of colloidal and particulate fractions resulted in the reduced rates of denitrification (up to 90%), phosphate release (up to 10%) and phosphate uptake under anoxic and aerobic conditions (over 300%).
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The Role of Thermal Monitoring in Cardiosurgery Interventions
- Antoni Zbigniew Nowakowski
- Mariusz Kaczmarek
- Jan Rogowski
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The shadowing chain lemma for singular Hamiltonian systems involving strong forces
- Marek Izydorek
- Joanna Janczewska
W niniejszym artykule rozważamy autonomiczny układ Hamiltonowski na płaszczyźnie z potencjałem, który ma punkt osobliwy (studnię nieskończonej głębokości) i maksimum globalne właściwe równe zero przyjmowane w dwóch różnych punktach płaszczyzny. Przy założeniu, że w otoczeniu punktu osobliwego potencjał spełnia warunek Gordona(gradient tego potencjału w otoczeniu punktu osobliwego jest tzw. silną siłą, ang. a strong force) dowodzimy lemat o istnieniu i krotności orbit homoklinicznych i heteroklinicznych. Stosujemy podejście wariacyjne i argumenty geometryczne (pojęcie i własności rotacji).
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The sources of contamination and reasons of damage of the flow part of the marine turbine engine in operation
- Zbigniew Korczewski
The aim of this paperis to show particular sensitivity of the flow part of the marine turbine engine to the presence of contaminations in the intake air. The contaminations form hard-to-remove deposits in the intervene channels that result in a reduced efficiency and performance of the engine. The paper classifies the contaminants according the source of their formation and their destructive force. The performed analyses and syntheses of the discussed problem have been complemented with the results of own endoscopic research of the flow part of various types of marine turbine engines.
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The structure of knowledge resources supporting a model of IT technologies architecture = Struktury zasobów wiedzy wspierających model architektury technologii IT
- Tomasz Sitek
- Cezary Orłowski
- Kamil Dowgielewicz
- Włodzimierz Wysocki
- Tomasz Deręgowski
This paper introduces an abstract model for tools used in the software engineering process. The main goal of the research is to develop a universal model which allows a description of tools used in the process. The model supports a decision making process and gives an option to choose the best tooling for the situation. The model considers many factors including, but not exclusive to, the company structure, project environment and characteristics, available features. This kind of decision is a long term with a fundamental meaning to the project success and costs and that makes the model especially important. The model is supposed to be a support for decision-makers responsible for selecting adequate solution for software engineering projects. Therefore, it is planned to build knowledge-base system which could store in a formal way whole knowledge regarding this problem area and also would help in its acquisition and processing. The authors described first steps in their research – analysis of the domain from the perspective of knowledge possible to acquire and main problems that can be identified at this early stage.
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The structure of novel polyurethanes containing synthetic poly[(R,S)-3-hydroxybutyrate]
- Joanna Brzeska
- Piotr Dacko
- Katarzyna Gębarowska
- Helena Janik
- Bożena Kaczmarczyk
- Janusz Kasperczyk
- Marek Kowalczuk
- Maria Rutkowska
The aim of this study was to estimate the structure of new polyurethanes with the potential to be used in medicine. Atactic poly[(R,S)-3-hydroxybutyrate], obtained via a ring-opening polymerization, and polycaprolactonediol or polyoxytetramethylenediol were used to built the soft segments. 4,4'-methylene dicyclohexyl diisocyanate and 1,4-butanediol were the components to form hard segments. Polyurethanes with low-molecular weight were obtained. The observation of FTIR and 1H-NMR spectra suggested that NH groups form two types of hydrogen bonds: with C[DOUBLE BOND]O urethane (possibly with ester group) and ether groups. An addition of poly[(R,S)-3-hydroxybutyrate] caused the slight increase in number of urethane-urethane hydrogen bonds. For some of polyurethanes (based on polyoxytetramethylenediol) the allophanate structures were present.
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The synthesis and biological activity of lipophilic derivatives of bicine conjugated with n3-(4-methoxyfumaroyl)-l-2,3-diaminopropanoic acid(fmdp) - an inhibitor of glucosamine-6-phosphate synthase
- Dominik Koszel
- Izabela Chabowska
- Katarzyna Kozłowska-Tylingo
- Ryszard Andruszkiewicz
Otrzymano serię pochodnych bicyny połączonych z inhibitorem syntazy glukozamino-6-fosforanu (fmdp)oraz zbadano ich właściwości lipofilowe i aktywność przeciwgrzybową. otrzymane związki charakteryzowały się wyższą llipofilowością niż fmdp. wszystkie otrzymane związki wykazywały także wyższą aktywność przeciwgrzybową niż fmdp.
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The Synthesis of 3-Amino-pyrazine-2-carbohydrazide and 3-Amino-N'-methylpyrazine-2-carbohydrazide Derivatives
- Barbara Milczarska
- Katarzyna Gobis
- Henryk Foks
- Łukasz Gołuński
- Paweł Sowiński
W poszukiwaniu biologicznie aktywnych związków otrzymano szereg pochodnych 3-Amino-pirazyno-2-karbohydrazydu i 3-Amino-N'-metylopirazyno-2-karbohydrazydu w wyniku reakcji hydrazydu aminopirazynoinowegokwasu z izocyjanianami, aldehydami, ketonami, CS2 i kwasem mrówkowym.
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The Unsteady Low-Frequency Forces Acting on the Rotor Blade in the First Stage on an Axial Compressor of SO-3 Jet Engine
- Marek Soliński
- Romuald Rządkowski
- Aleksandra Pająk
- Ryszard Szczepanik