2016 - Publications Repository - Gdańsk University of Technology

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Publications from the year 2016

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Time for temporariness! Temporary architecture - whim or necessity?
- Ksenia Piątkowska
2016
What are the qualities of temporary architectural objects that make them helpful instruments for evolving the image of contemporary urban space? Six hypotheses provide rationales for why current temporary architecture seems to be a remedy for dysfunctional city structures. The research was limited to the temporary architectural objects constructed in open-air city zones, including the architecture of events. The temporary objects' architectural qualities are presented in the context of local identity, international image of the place, quality of urban life, innovative solutions and aspects of the economic picture. The results of the research suggest that temporary architectural objects may: - enhance the competitiveness of urban space as a global tourist destination; - revise existing flawed urban structures and indicate direction for future improvement; - contribute new aesthetic values due to their distinctive architecture; - improve public space utility by completing missing functions; - strengthen feelings of local identity; - increase the economic potential of the space in its surroundings. The increasing amount of temporary objects in urban space is the architectural reaction to the ubiquitous trend of adapting the city to contemporary society and global market demands. Temporary architecture brings liberty to creation; allowing experiments in the urban space with relatively low-cost interventions that become the most fascinating and inventive structures of the moment.
TINKTEP: A fully self-consistent, mutually polarizable QM/MM approach based on the AMOEBA force field
- Jacek Dziedzic
- Yuezhi Mao
- Yihan Shao
- Jay Ponder
- Teresa Head-Gordon
- Martin Head-Gordon
- Chris-Kriton Skylaris
2016 Full text JOURNAL OF CHEMICAL PHYSICS
We present a novel quantum mechanical/molecular mechanics (QM/MM) approach in which a quantum subsystem is coupled to a classical subsystem described by the AMOEBA polarizable force field. Our approach permits mutual polarization between the QM and MM subsystems, effected through multipolar electrostatics. Self-consistency is achieved for both the QM and MM subsystems through a total energy minimization scheme. We provide an expression for the Hamiltonian of the coupled QM/MM system, which we minimize using gradient methods. The QM subsystem is described by the ONETEP linear-scaling DFT approach, which makes use of strictly localized orbitals expressed in a set of periodic sinc basis functions equivalent to plane waves. The MM subsystem is described by the multipolar, polarizable force field AMOEBA, as implemented in TINKER. Distributed multipole analysis is used to obtain, on the fly, a classical representation of the QM subsystem in terms of atom-centered multipoles. This auxiliary representation is used for all polarization interactions between QM and MM, allowing us to treat them on the same footing as in AMOEBA. We validate our method in tests of solute-solvent interaction energies, for neutral and charged molecules, demonstrat- ing the simultaneous optimization of the quantum and classical degrees of freedom. Encouragingly, we find that the inclusion of explicit polarization in the MM part of QM/MM improves the agreement with fully QM calculations.
Titania nanotubes infiltrated with conducting polymer PEDOT modified by Prussian Blue – a novel type of organic-inorganic heterojunction characterised with enhanced photoactivity.
- Katarzyna Siuzdak
- Mariusz Szkoda
- Jakub Karczewski
- Jacek Ryl
- Anna Lisowska-Oleksiak
2016 RSC Advances
A highly ordered p–n heterojunction was formed based on titania nanotubes containing a conducting polymer with Prussian blue matrix. The study demonstrates, for the first time, cases when a composite based on titania array scaffolding and Prussian blue embedded in PEDOT exhibits reversible FeII/FeIII redox activity. Highly enhanced photoactivity and capacitance of the obtained material are depicted in comparison to pristine titania. To the best of our knowledge this is the first report showing a heterojunction with titania nanotubes containing redox active species that may take part in efficient photocurrent generation.
Tkaninowe tarcze polerskie do operacji ręcznych i zautomatyzowanych
- Andrzej Bakoń
- Adam Barylski
2016
Na podstawie własnego doświadczenia w produkcji narzędzi, kontaktów z użytkownikami oraz analizy ofert producentów przedstawiono narzędzia do ścierno-polerskich obróbek wykończeniowych, w których elementem roboczym jest tkanina. Zwrócono uwagę na ich konstrukcję, stosowane materiały włókiennicze oraz warunki i optymalne obszary ich zastosowań.
Tlenek grafenu i redukowany tlenek grafenu
- Izabela Kondratowicz
- Kamila Sadowska
2016
Grafen to alotropowa odmiana węgla o grubości jednego atomu. Charakteryzuje się niezwykłą wytrzymałością mechaniczną. W porównaniu z diamentem moduł Younga grafenu (określający sprężystość materiału) jest około 1000 razy większy. Każdy atom węgla w grafenie posiada cztery elektrony walencyjne– trzy z nich biorą udział w tworzeniu wiązań kowalencyjnych z sąsiednimi atomami, ostatni zaś tworzy chmurę zdelokalizowanych elektronów nad i pod płaszczyzną grafenu.
To Work or Not to Work… in a Multicultural Team?
- Katarzyna Stankiewicz
- Paweł Ziemiański
2016 Full text Journal of Intercultural Management
The main goal of the article is to present research findings regarding student’s attitude to working in a multicultural team (MCT). Research participants of different cultural background completed the research survey. Their willingness to work in MCT was measured together with factors that influence it. These include factors related to both team members and the task structure. Research findings indicate that the respondents preferred to work in MCT if the task required diversity of cognitive perspectives, e.g. in a situation requiring creative or outof-the-box thinking. In contrast, the strongest preference for working in a single-culture team (SCT) was present in the case of tasks requiring mutual understanding among the team members and like-mindedness. In addition, it was found that the preference to work in SCT or MCT entrusted with a task with specific requirements was also related to the experience in working in such teams declared by the respondents. Conclusions and recommendations may be utilized to design methods for managerial education and training
Topology recognition and leader election in colored networks
- Dariusz Dereniowski
- Andrzej Pelc
2016 Full text THEORETICAL COMPUTER SCIENCE
Topology recognition and leader election are fundamental tasks in distributed computing in networks. The first of them requires each node to find a labeled isomorphic copy of the network, while the result of the second one consists in a single node adopting the label 1 (leader), with all other nodes adopting the label 0 and learning a path to the leader. We consider both these problems in networks whose nodes are equipped with not necessarily distinct labels called colors, and ports at each node of degree d are arbitrarily numbered 0,1,…,d−1. Colored networks are generalizations both of labeled networks, in which nodes have distinct labels, and of anonymous networks, in which nodes do not have labels (all nodes have the same color). In colored networks, topology recognition and leader election are not always feasible. Hence we study two more general problems. Consider a colored network and an input I given to its nodes. The aim of the problem TOP, for this colored network and for I, is to solve topology recognition in this network, if this is possible under input I, and to have all nodes answer “unsolvable” otherwise. Likewise, the aim of the problem LE is to solve leader election in this network, if this is possible under input I, and to have all nodes answer “unsolvable” otherwise. We show that nodes of a network can solve problems TOP and LE, if they are given, as input I, an upper bound k on the number of nodes of a given color, called the size of this color. On the other hand we show that, if the nodes are given an input that does not bound the size of any color, then the answer to TOP and LE must be “unsolvable”, even for the class of rings. Under the assumption that nodes are given an upper bound k on the size of a given color, we study the time of solving problems TOP and LE in the LOCAL model in which, during each round, each node can exchange arbitrary messages with all its neighbors and perform arbitrary local computations. We give an algorithm to solve each of these problems in arbitrary networks in time O(kD+Dlog⁡(n/D)), where D is the diameter of the network and n is its size. We also show that this time is optimal, by exhibiting classes of networks in which every algorithm solving problems TOP or LE must use time Ω(kD+Dlog⁡(n/D)).
Toward Smart Innovation Engineering: Decisional DNA-Based Conceptual Approach
- Mohammad Waris
- Cesar Sanin
- Edward Szczerbicki
2016 Full text CYBERNETICS AND SYSTEMS
ABSTRACT Knowledge and experience are essential requirements for product innovation. The presented paper proposes a systematic approach for product innovation support using a Smart Knowledge Management System comprising a Set of Experience Knowledge Structure (SOEKS) and Decisional DNA (DDNA). This proposed system is dynamic in nature because it updates itself every time a new decision related to innovation is made. Through this system, the product innovation process can be performed semiautomatically and efficiently because it stores knowledge of past experiences of innovative decisions.
Towards automation of IT systems repairs
- Janusz Górski
- Marek Kamiński
2016 Full text SOFTWARE QUALITY JOURNAL
Monitoring and repair are two sides of the on-the-fly maintenance of IT systems.Monitoring is well supported by automatic tools. In contrast, repairs involve much higherhuman intervention which negatively affects reliability and efficiency. The paper intro-duces a method of automating repairs of IT systems which can be integrated with any ofthe existing monitoring mechanisms. The method is described as a collection of modelsand algorithms. The monitored system is modelled as a multi-hierarchy of components,and predicates are used to detect problems and to trigger the corresponding repairs. Repairprocedures are represented using flow diagrams. Graphical notations are used to specify thearchitecture of the runnable component of the proposed method and the correspondingrepair API. Formal notation (the Z language) is used to provide for precision and unam-biguity of the specifications. The formal specification facilitates reuse of the method indifferent target environments. For validation purposes, the method has been instantiated(using the PERL language) in an industrial helpdesk supporting the operation of severalhundred IT systems. The validation data demonstrate the significant positive impact of theproposed method on the efficiency of the performed repairs.
Towards detecting programmers’ stress on the basis of keystroke dynamics
- Agata Kołakowska
2016 Full text Annals of Computer Science and Information Systems
The article describes the idea of detecting stress among programmers on the basis of keystroke dynamics. An experiment with a group of students of artificial intelligence classes was performed. Two samples of keystroke data were recorded for each case, the first while programming without stress, the second under time pressure. A number of timing and frequency parameters were calculated for each sample. Then statistical analysis was performed to evaluate the significance of keystroke parameters changes. It turned out that some of the defined features might be indicators of being stressed.
Towards Healthcare Cloud Computing
- Piotr Dorożyński
- Adam Brzeski
- Jan Cychnerski
- Tomasz Dziubich
2016
In this paper we present construction of a software platform for supporting medical research teams, in the area of impedance cardiography, called IPMed. Using the platform, research tasks will be performed by the teams through computer-supported cooperative work. The platform enables secure medical data storing, access to the data for research group members, cooperative analysis of medical data and provide analysis supporting tools basing on intelligent information retrieval techniques (semantic text comparison, charts, images, video matching). On top of the platform, a dedicated web application is built for medical teams focused on the area of hemodynamics. The acquired data enables the researchers to develop new classification schemes for hemodynamic profiles, which will be used for construction of prototype application for supporting stroke treatment centers. In the paper we compare IPMed to other existing platforms which offer similar functionality and describe a concept of its migration to a cloud based system
Towards increasing F-measure of approximate string matching in O(1) complexity
- Adrian Boguszewski
- Julian Szymański
- Karol Draszawka
2016
The paper analyzes existing approaches for approximate string matching based on linear search with Levenshtein distance, AllScan and CPMerge algorithms using cosine, Jaccard and Dice distance measures. The methods are presented and compared to our approach that improves indexing time using Locally Sensitive Hashing. Advantages and drawbacks of the methods are identified based on theoretical considerations as well as empirical evaluations on real-life dictionaries.
Towards Safety Case Integration with Hazard Analysis for Medical Devices
- Andrzej Wardziński
- Aleksander Jarzębowicz
2016 Full text
Safety case is one of system safety lifecycle products and should be consistent with other lifecycle products like hazard analysis results. In this paper we present a method of safety case integration with hazard tables based on the use of parametrized argument patterns. We describe a hazard table metamodel, a safety argument pattern and a mechanism of pattern instantiation using a linking table which represents references to system lifecycle artefacts. We report and comment results of a feasibility study of pattern application for medical device hazard analysis. Finally we discuss the opportunities of applying such solution to safety case development and maintenance and the perspectives of further development of this approach.
Towards solving heterogeneous fleet vehicle routing problem with time windows and additional constraints: real use case study
- Krzysztof Bruniecki
- Andrzej Chybicki
- Marek Moszyński
- Mateusz Bonecki
2016 Full text Annals of Computer Science and Information Systems
In advanced logistic systems, there is a need for a comprehensive optimization of the transport of goods, which would reduce costs. During past decades, several theoretical and practical approaches to solve vehicle routing problems (VRP) were proposed. The problem of optimal fleet management is often transformed to discrete optimization problem that relies on determining the most economical transport routes for a number of vehicles in order to deliver (or pick up) certain amount of goods to geographically distributed set of customers. However, real life problems generally differ from the classical cases because they impose additional constraints to be satisfied. Therefore, research related to developing dedicated theoretical and technological solutions fitted to particular real life use case are very important. In the paper, the particular variant of the VRP problem which is an exemplification of the real-life business case is presented. Authors of the paper proposed an architecture of modular system and an algorithm designed to solve the real-world variant of the VRP which is important from the business perspective.
Towards the 4th industrial revolution: networks, virtuality, experience based collective computational intelligence, and deep learning
- Edward Szczerbicki
- Syed Imran Shafig
- Cesar Sanin
- Carlos Toro
- Haoxi Zhang
2016
Quo vadis, Intelligent Enterprise? Where are you going? The authors of this paper aim at providing some answers to this fascinating question addressing emerging challenges related to the concept of semantically enhanced knowledge-based cyber-physical systems – the fourth industrial revolution named Industry 4.0.
Towards the Application of Structure-Property Relationship Modeling in Materials Science: Predicting the Seebeck Coefficient for Ionic Liquid/Redox Couple Systems
- Anita Sosnowska
- Maciej Barycki
- Agnieszka Gajewicz
- Maciej Bobrowski
- Sylwia Freza
- Piotr Skurski
- Stefanie Uhl
- Edith Laux
- Tony Journot
- Laure Jeandupeux
- Herbert Keppner
- Tomasz Puzyn
2016 Full text CHEMPHYSCHEM
This work focuses on determining the influence of both ionic liquid (IL) type and redox couple concentration on Seebeck coefficient values of such a system. The quantitative structure property relationship (QSPR) and read-across techniques are proposed as methods to identify structural features of ILs (mixed with LiI/I2 redox couple), which have the most influence on the Seebeck coefficient (Se) values of the system. ILs consisting of small, symmetric cations and anions with high values of vertical electron binding energy are recognized as those with the highest values of Se. In addition, the QSPR model enables the values of Se to be predicted for each IL that belongs to the applicability domain of the model. The influence of the redox-couple concentration on values of Se is also quantitatively described. Thus, it is possible to calculate how the value of Se will change with changing redox-couple concentration. The presence of the LiI/I2 redox couple in lower concentrations increases the values of Se, as expected.
Towards the Development of a Risk Model for Unmanned Vessels Design and Operations
- Krzysztof Wróbel
- Przemysław Krata
- Jakub Montewka
- Tomasz Hinz
2016 Full text TransNav - The International Journal on Marine Navigation and Safety of Sea Transportation
An unmanned merchant vessel seems to be escaping from the stage of idea exploration. Once the concept proofs its safety, it may become a part of maritime reality. Although the safety aspect of such a ship has been addressed by a handful of scholars, the problem remains open. This is mainly due to lack of knowledge regarding actual operational circumstances and design of unmanned ships, which are yet to be developed. In the attempt of bridging this gap, the risk analysis associated with unmanned ships needs to be carried out, where all relevant hazards and consequences are assessed and quantified in systematic manner. In this paper we present the results of a first step of such analysis, namely the hazard analysis associated with the unmanned ships. The list of hazards covers various aspects of unmanned shipping originating from both design and operational phases of vessel’s life. Subsequently the hazards and related consequences are organized in a casual manner, resulting in the development of a structure of a risk model.
Towards the participant observation of emotions in software development teams
- Michał Wróbel
2016 Full text Annals of Computer Science and Information Systems
Emotions, moods and temperament influence our behaviour in every aspect of life. Until now plenty of research has been conducted and many theories have been proposed to explain the role of emotions within the working environment. However, in the field of software engineering, interest in the role of human factors in the process of software development is relatively new. In the paper the research design process that has been proposed details a novel approach using the method of participant observation in order to investigate the role of emotions in IT projects. The participant observation protocol presented was developed in an iterative manner, where successive phases were validated in two preliminary studies.
Tożsamość, a miejsce zamieszkiwania
- Agnieszka Kurkowska
2016
Architektura jest zjawiskiem uniwersalnym i stanowi niezależną dziedzinę kulturotwórczą. Dlatego jako architekt chciałabym zabrać głos w dyskusji o tożsamości miejsca, które właściwie formowane jest nośnikiem określonych wartości i współdecyduje o zaistnieniu tożsamości z miejscem. W epoce wszechobecnej bezrefleksyjnej konsumpcji i powszechnego unikania słowa pisanego obiekty należące do kultury materialnej, jaką współtworzy architektura, stają się istotnymi nośnikami przekazu idei i określonych treści. Przynależność do miejsca ma swój wyraz w świadomie projektowanych formach przestrzennych. O ile obecność obiektów architektonicznych w przestrzeni jest oczywistą koniecznością, o tyle ich rola jako środków przekazu może nie być tak czytelna. Należy uzmysłowić sobie fakt multispektralnego oddziaływania obiektów architektonicznych na człowieka, przekazywanych przez nie treści, komunikatów, w tym, będących ich szczególnym rodzajem, nastrojów. Poczucie tożsamości rozumiane jako pełna identyfikacja, połączona z poczuciem bezpieczeństwa pochodzącym z silnego przeświadczenia o przynależności, może być warunkowane formami obiektów archiektonicznych. Ich znaczeniowa dostępność wynika z zawartych w formach i wzorach wciąż czytelnych archetypów znaczeń, jednocześnie odczuwalnych i zrozumiałych dla współczesnych odbiorców. Najbardziej oczywiste archetypy odnoszą się do schronienia. Jego forma, pierwotnie determinowana funkcją, informowała mieszkańców o bezpieczeństwie. Wizualne wpisanie obiektów skonstruowanych przez człowieka w ich naturalne otoczenie przyrodnicze stanowi znak zamieszkania, obrazuje miejsce przynależności i pozwala przechowywać te ślady i znaki w pamięci jako wyobrażeniową reprezentację miejsca pochodzenia i przebywania. Współcześnie schronienie nie konotuje jedynie prostych form, ale często do archetypów się odnosi. Wraz z rozwojem kultury, Obecnie dochodzi nawet do całkowitego zerwania z pierwotnym skojarzeniem schronienia na rzecz poszukiwania własnego, indywidualnego miejsca, które drogą dalekich skojarzeń i nieoczywistych wyborów łączy dany obiekt z jego mieszkańcem. Szczególnie może też być interpretowany zbiór elementów przestrzennych i dekoracyjnych pozwalających na utożsamienie się z miejscem. W takiej pogmatwanej niejednorodności wyborów, łatwo można zagubić prawdziwy sens harmonii przebywania fizycznego i psychicznego gwarantujących spokój bycia u siebie.
Tracking body movement for radio channel measurements in BAN with indoor positioning system
- Jarosław Sadowski
- Piotr Rajchowski
- Krzysztof Cwalina
2016
This paper presents indoor positioning system based on inertial navigation with additional distance measurements using UWB modems and map matching to increase accuracy and eliminate position drift. Such system may be used to track position of human body during radio channel measurements for body area networks. Performance of proposed system and limitations caused by inertial navigation are briefly described.