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Publications from the year 2014
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Gdańska komunikacja miejska - rozwój i prognozy
- Wojciech Owczarzak
- Sławomir Sommer
- Stanisław Taryma
Rozwinięty system transportu publicznego ma kluczowe znaczenie dla jakości życia obywateli, ułatwiając im dostęp do ich miejsc pracy, szkoły, uczelni, miejsca rozrywki itp. Zwiększona mobilność ma ogromny wpływ na gospodarkę w regionie. Ponadto transport publiczny zmniejsza natężenie ruchu, co ma pozytywny wpływ na infrastrukturę drogową i środowisko. Artykuł przedstawia stan transportu publicznego w Gdańsku, który jest jednym z największych miast w Polsce, a tym samym ma znaczenie gospodarcze, edukacyjne i kulturalne. Ciągła modernizacja transposrtu publicznego w tym mieście jest niezbędna do zrównoważonego rozwój tego obszaru.
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Gdy w sieci jest powietrze
- Ziemowit Suligowski
Powietrze w sieci wodociągowej i kanalizacyjnej. Problem blokady przepływu w przewodach ciśnieniowych. Problem podciśnienia i zasysania rury. Wtórne zmiany jakości ścieków, zagniwanie, odory. Uciążliwość dla środowiska. Skuteczne rozwiązanie dla obiektu liniowego i dla obiektu punktowego. Filtry, wypełnienia.
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Gdyński modernizm lat międzywojennych. Oblicze stylowe epoki
- Maria Sołtysik
Rozdział przedstawia kierunki stylowe gdyńskiego modernizmu lat międzywojennych (1926-1939). Wymienia realizacje i autorów gdyńskiej architektury umiarkowanie modernistycznej, takich jak Art Deco i nowy monumentalizm oraz architektury formacji awangardowych modernizmu, takich jak funkcjonalizm i Streamline Moderne.
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Gdyński Szlak Modernizmu - IV Weekend Architektury w Gdyni, prowadzenie spaceru Via City Design Gdynia - szlakiem najciekawszych realizacji architektury wnętrz - lokali szlaku kulinarnego Gdyni
- Jakub Figel
Celem było przedstawienie mieszkańcom Gdyni designu, aranżacji wnętrz wybranych gdyńskich lokali gastronomicznych za pomocą szczegółowych opisów materiałów i rozwiązań oraz ich wzajemnych powiązań we wnętrzu. Mieszkańcy wybierali najbardziej kreatywne wnętrze, uczestnik spaceru - wcielał się w rolę jurora.
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Geminate-pair dissociation yield in systems with exponential energetic disorder — A Monte Carlo study
- Władysław Tomaszewicz
- Karol Falkowski
- Waldemar Stampor
- Piotr Jerzy Grygiel
Geminate electron–hole recombination in systems with exponential energetic disorder is studied by Monte Carlo method. The field and temperature dependencies of geminate-pair dissociation probability are calculated. It is established that the dissociation yield of carrier pairs depends mainly on the extent of carrier thermalization, which influences the Einstein relationship. The approximate limiting temperature is given by Te = ε0/2kB, where ε0 determines the decay rate of exponential distribution of localized states. For systems in approximate thermal equilibrium, at T > Te, the yield of free carriers is almost independent of disorder degree and its temperature dependence at zero field has an Arrhenius form. These simulation results are well described by classical Onsager theory. For non-equilibrium systems, at T < Te, the free-carrier yield significantly increases with growing disorder and temperature dependence of zero-field carrier yield is sub-Arrhenius one. At sufficiently low temperatures the carrier yield approaches constant value. These results are described with good accuracy by modified Onsager theory, with T replaced by Te. It is concluded that experimental investigations of geminate-carrier dissociation yield in disordered materials may be a valuable tool for verifying the Einstein relation and determining the energy distribution of localized states.
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Gender approach to multi-objective optimization of detection systems by pre-selection of criteria
- Zdzisław Kowalczuk
- Tomasz Białaszewski
A novel idea of performing evolutionary computations for solving highly-dimensional multi-objective optimization (MOO) problems is proposed. The information about individual genders is applied. This information is drawn out of the fitness of individuals and applied during the parental crossover in the evolutionary multi-objective optimization (EMO) processes. The paper introduces the principles of the genetic-gender approach (GGA) and illustrates its performance by means of examples of multi-objective optimization tasks.
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Gender approach to multi-objective optimization of detection systems by pre-selection of criteria
- Zdzisław Kowalczuk
- Tomasz Białaszewski
A novel idea of performing evolutionary computations for solving highly-dimensional multi-objective optimization (MOO) problems is proposed. The information about individual genders is applied. This information is drawn out of the fitness of individuals and applied during the parental crossover in the evolutionary multi-objective optimization (EMO) processes. The paper introduces the principles of the genetic-gender approach (GGA) and illustrates its performance by means of examples of multi-objective optimization tasks.
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Gender differences in entrepreneurship myths
- Beata Krawczyk-Bryłka
The article presents the research results related to the most popular entrepreneurship myths in a group of business students. The author focused on gender differences in myth intensity, credibility and importance based on subject literature. The statistic analysis does not confirm any significant differences between male and female groups in case of the majority of myths, however women’s entrepreneurial intentions proved to be more strongly correlated with the beliefs that can discourage this group from starting their own business.
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Gendered entrepreneurship and its impact on firm innovativeness - a literature review.
- Agnieszka Zapała
- Krzysztof Zięba
Entrepreneurs gain a lot of attention in recent decades. Even if a precise definition of entrepreneur and entrepreneurship remains problematic, it is clear that there is a strong link between entrepreneurship and innovativeness, as well as between entrepreneur and innovation. In the current era of globalisation, the importance of innovations is as great as never before. And so is the importance of innovativeness determinants. Investigating gender differences with respect to various aspects of running business has become a popular topic of scientific publications. However, not much is known about the impact of the owner’s gender on the innovativeness of business. The aim of this paper is to provide a thorough analysis of the existing literature on this topic and to set the ground for the empirical research to fill in the existing knowledge gaps.
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Generative Process Planning with Reasoning based on Geometrical Product Specification
- Mariusz Deja
- Mieczysław Siemiątkowski
The focus of this paper is on computer aided process planning for parts manufacture in systems of definite process capabilities, involving the use of multi-axis machining centers for parts shaping and grinding machines for finishing. It presents in particular a decision making scheme for setup determination as a part of generative process planning. The planning procedurę consists of two stages. The first stage is associated with generic setup determination applying tool accessibility analysis to machined features and reasoning based on the specification of geometrical product data. The second stage involves machine specific setup planning considering the availability and capability of machines on a shop floor through setup merging. The impact of dimensional and geometric tolerance as well as the surface roughness of relatively complex mechanical element on the generated process plan with several setups is presented. The relevant reasoning mechanism within a decision making scheme on generated process alternatives is shown based on a numeric case.
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Generatory zmian służące doskonaleniu usług medycznych
- Martyna Kostrzewa
- Jolanta Łopatowska
W rozdziale zaprezentowano podstawowe aspekty usług medycznych. Opisano typowe cechy usług, które odniesiono do usług medycznych, a także wyznaczono specyficzne cechy dla tego rodzaju usług. Następnie podjęto próbę zdefiniowania pojęcia jakość w usługach medycznych w nawiązaniu do potrzeb pacjenta. W rozdziale przybliżono najważniejsze z obecnie stosowanych, mechanizmów zapewnienia jakości w usługach medycznych, którymi są: Certyfikacja zgodnie z rodziną norm ISO 9000, Akredytacja Centrum Monitorowania Jakości w Ochronie Zdrowia oraz Standardy TQM. W niniejszym rozdziale dokonano również identyfikacji głównych generatorów zmian w doskonaleniu – istotnych czynników generujących zmiany ukierunkowane na doskonalenie usług medycznych. W oparciu o nią przeprowadzono analizę głównych czynników mających wpływ na zmiany zachodzące w usługach zdrowotnych w odniesieniu do cech, na które mogą wpływać. Zaprezentowano również przykładowe możliwe zmiany mające wpływ na cechy usług medycznych, odnoszące się do realizowanych procesów i stosowanych rozwiązań technologicznych w obszarze rejestracji.
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Genetic Programming for Interaction Efficient Supporting in Volunteer Computing Systems
- Jerzy Balicki
- Waldemar Korłub
- Henryk Krawczyk
- Jacek Paluszak
Volunteer computing systems provide a middleware for interaction between project owners and great number volunteers. In this chapter, a genetic programming paradigm has been proposed to a multi-objective scheduler design for efficient using some resources of volunteer computers via the web. In a studied problem, genetic scheduler can optimize both a workload of a bottleneck computer and cost of system. Genetic programming has been applied for finding the Pareto solutions by applying an immunological procedure. Finally, some numerical experiment outcomes have been discussed.
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Genre-Based Music Language Modeling with Latent Hierarchical Pitman-Yor Process Allocation
- Stanisław Raczyński
- Emmanuel Vincent
In this work we present a new Bayesian topic model: latent hierarchical Pitman-Yor process allocation (LHPYA), which uses hierarchical Pitman-Yor pr ocess priors for both word and topic distributions, and generalizes a few of the existing topic models, including the latent Dirichlet allocation (LDA), the bi- gram topic model and the hierarchical Pitman-Yor topic model. Using such priors allows for integration of -grams with a topic model, while smoothing them with the state-of-the-art method. Our model is evaluated by measuring its perplexity on a dataset of musical genre and harmony annotations 3GenreDatabase (3GDB) andbymeasuringitsabilitytopredictmusicalgenrefromchord sequences. In terms of perplexit y, for a 262-chord dictionary we achieve a value of 2.74, compared to 18.05 for trigrams and 7.73 for a unigram topic model. In terms of genre prediction accuracy with 9 genres, the proposed approach performs about 33% better in relative terms than genre-dependent -grams, ac hieving 60.4% of accuracy.
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Genre-Based Music Language Modeling with Latent Hierarchical Pitman-Yor Process Allocation
- Stanisław Raczyński
- Emmanuel Vincent
In this work we present a new Bayesian topic model: latent hierarchical Pitman-Yor process allocation (LHPYA), which uses hierarchical Pitman-Yor pr ocess priors for both word and topic distributions, and generalizes a few of the existing topic models, including the latent Dirichlet allocation (LDA), the bi- gram topic model and the hierarchical Pitman-Yor topic model. Using such priors allows for integration of -grams with a topic model, while smoothing them with the state-of-the-art method. Our model is evaluated by measuring its perplexity on a dataset of musical genre and harmony annotations 3GenreDatabase (3GDB) andbymeasuringitsabilitytopredictmusicalgenrefromchord sequences. In terms of perplexit y, for a 262-chord dictionary we achieve a value of 2.74, compared to 18.05 for trigrams and 7.73 for a unigram topic model. In terms of genre prediction accuracy with 9 genres, the proposed approach performs about 33% better in relative terms than genre-dependent -grams, ac hieving 60.4% of accuracy.
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Geometrical versus analytical approach in problem solving- an exploatory study
- Magdalena Lemańska
- Ingrid Semanisinova
- Carlos Soneira Calvo
- Maria Jose Souto Salorio
- Ana Dorotea Tarrio Tobar
Abstract. In this study we analyse the geometrical visualization as a part of the process of solution. In total 263 students in the first year of study at three different universities in three different countries (Poland, Slovakia and Spain) were asked to solve four mathematical problems. The analysis of the results of all students showed that geometrical visualization for problems where there is a possibility to choose different ways of solving is not as frequent as one would expect even if the problem is hardly solvable without it. Especially Spanish students prefer to solve the problem analytically. Visual reasoning is mostly regarded as an intuitive, preliminary stage in the reasoning processes and nothing needs to be done to develop it. On the basis of our results we consider it necessary to regain the use of geometry in the classroom and encourage visualization, the use of the figure, the physical and spatial intuition.
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Geometrically Nonlinear Analysis of Functionally Graded Shells Based on 2-D Cosserat Constitutive Model
- Karol Daszkiewicz
- Jacek Chróścielewski
- Wojciech Witkowski
In this paper geometrically nonlinear analysis of functionally graded shells in 6-parameter shell theory is presented. It is assumed that the shell consists of two constituents: ceramic and metal. The mechanical properties are graded through the thickness and are described by power law distribution. Formulation based on 2-D Cosserat constitutive model is used to derive constitutive relation for functionally graded shells. Numerical results for typical benchmark geometries of smooth and irregular FGM shells under mechanical loading are presented. The influence of power-law exponent and micropolar material constants on the overall behaviour of functionally graded shells is investigated.
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Geometrically nonlinear analysis of shells - Benchmark problems for Autocad Robot Analysis Professional
- Andrzej Ambroziak
- Paweł Kłosowski
The aim of this work is to verify the suitability of commercial engineering software for geometrically nonlinear analysis of shells. This paper deals with the static, geometrically nonlinear analysis of shells made of an isotropic material. The Finite Element Method (FEM) is chosen to solve the problem. The results of the commercial software Autocad Robot Structural Analysis Professional (ARSAP) are compared with the litera-ture results obtained with advanced non-linear analysis focused software.
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Geosyntetyki w służbie nowoczesnych projektów
- Adam Bolt
Odpowiedzi na pytania związane z wykorzystywaniem geosyntetyków przy realizacji projektów budowlanych w polsce,