2016 - Repozytorium publikacji - Politechnika Gdańska

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Security Requirements and Controls for Incident Information Sharing in the Polish Power System
- Rafał Leszczyna
- Michał Wróbel
- Robert Małkowski
2016
Among the strategies of protecting information assets of the power system, sharing of information about current cybersecurity incidents between energy operators appears to be a prerequisite. Exchange of information leads to the effective detection of attacks and exploited vulnerabilities as well as the identification of countermeasures. This paper presents the results of continuation of our works on developing a secure and efficient information sharing platform for the power system, namely the security requirements for the platform together with the approach of their elicitation as well as security controls which respond to them.
Segmentation of academic community for the purposes of mobility plan development – case study of Gdansk University of Technology
- Romanika Okraszewska
- Aleksandra Romanowska
- Kazimierz Jamroz
2016 Pełny tekst
The objective of the paper is to analyse the structure of academic community for its transport behaviour and attitudes using the example of the Gdansk University of Technology (the GUT) in Poland. Once understood, the group can be divided into homogenous sub-groups and studied for their potential and ways to influence their behaviour, attitudes and transport patterns. The results may be used to develop dedicated actions designed to change the mentality and transport behaviour or to maintain sustainable transport patterns. The purpose of the research was to help draw up a GUT mobility plan using market segmentation, a method commonly used in management and marketing. The segmentation was based on transport behaviour surveys among the University’s employees. A total of 5 segments were distinguished: absolute car dependent (24%), conscious car drivers (27%), promising car drivers (7%), car free commuters (16%) and sustainable car owners (26%). In-depth analyses helped to aggregate the segments into 3 groups to be targeted with different measures aimed at changing mentality (24%), transport behaviour (34%) or maintaining sustainable transport habits (41%). Changing the proportion of particular segments and/or target groups can be one of the goals for the mobility plan. Based on the results of GUT research some dependences between affiliation to the segment and other describing variables were observed. However, further research is necessary into the other cases. If positively verified, the research can be a basis for the development of a universal method for dividing the academic community into segments based on the available data or simple criteria. This would reduce the time to prepare the mobility plan and ensure that the measures are targeted properly and developed with less effort.
Sektor małych i średnich przedsiębiorstw a rozwój województwa warmińsko-mazurskiego
- Inna Suchkova
- Paweł Kowalski
- Marcin Żuchowski
2016
Artykuł przedstawia definicje pojęcia małych i średnich przedsiębiorstw stosowane przez Organizację Współpracy Gospodarczej i Rozwoju oraz tę rekomendowaną przez Komisję Europejską. Scharakteryzowano sektor małych i średnich przedsiębiorstw Warmii i Mazur oraz zaprezentowano teorie rozwoju regionalnego w odniesieniu do tego województwa. Przedstawiony również został wpływ regionalnych instrumentów wsparcia MŚP na poziom bezrobocia w województwie warmińsko-mazurskim.
Selected anionic and cationic surface active agents determined in river sediments – the Klodnica catchment
- Ruman Marek
- Olkowska Ewa
- Żaneta Polkowska
2016
Surface active agents (SAAs) are specific compounds that contain hydrophilic/ hydrophobic group in their molecules named as amphiphilic structures. According to charge on the hydrophilic part of surfactants they can be classified into three main groups: anionic, cationic and non-ionic compounds. Due to the amphiphilic structure of SAAs they have specific properties (e.g. ability to adsorption at different surfaces, reduction of tension, formation of micelles) and can be applied in various areas of human activity (housekeeping, different industries). The aim of the research was to determine cationic and anionic surfactants in river bottom sediment samples in the Klodnica River area. Presented research shows that in highly polluted aquatic ecosystems can be detected anionic and cationic surfactants. Their occurrence can have negative effect on living organisms and natural balance in the aquatic environment. Presented environmental problem in very important according to mentioned aspects and lack of official regulation for concentration of cationic and anionic surface active agents in aquatic ecosystems.
Selected aspects of logistics management of the production process in an enterprise
- Adam Lewiński
2016 Pełny tekst
The following article presents selected aspects of management of production logistics process in enterprise. Companies treat this part of business as a way to empower market position. In the first part author explained the idea of process. The next part describes the definition of logistics production management, which is crucial for manufacturing enterprises. However, author described lots of tools related to production management based on polish production company. In the last part author summarize the importance of production logistics process in enterprises.
Selected aspects of two-phase flow studies using different visualization techniques in minichannels
- Michał Klugmann
- Dariusz Mikielewicz
2016
The subject of the study is to present the possibility of the use of visualization techniques in the researches on two-phase flows, carried out by the authors for many years. These works included as follows: heat transfer during the flow boiling, boiling crises and condensation in flow. The issue of the heat transfer intensification during the flow boiling through the channels of small diameters was analyzed. All this work focused on the minichannel geometry and, for the most part, on the cylindrical cross sections. Currently, it is planned to extend the research on the minigap geometry, including the possibility of intensification of heat exchange in this geometry. The intention of the project is to combine this work with a broad research on thermosyphon circulation (CLT), which is also a major concern for the industry. For this purpose, the use of a model minigap exchanger as an evaporator for thermosyphon circuit is planned. Visualization techniques, including thermal imaging, haven't been frequently used in studies on two-phase flows yet. Meanwhile, they have a number of advantages compared to traditional measurement methods and are worthy of attention, despite of the specific conditions that must be met for their effective use. The main advantages are: the possibility of registering the continuous process and its variability over the time, simplification of the issues of measurement errors (uniform measurement error at any point in the case of thermal imaging), and - in relation to contact methods - the elimination of thermal bridges (ribs). It is planned to extensive use of visualization techniques. These techniques seems to be particularly useful, because, in the natural way, allows to study the phenomenon in two-dimensional distribution, which is characteristic for minigaps.
Selected dynamic properties of adaptive proportional observer of induction motor state variables
- Roman Niestroj
- Tadeusz Bialon
- Marian Pasko
- Arkadiusz Lewicki
2016
This paper presents problems related to the design and the stability of adaptive proportional observer which is used for estimation of magnetic flux and motor speed in sensorless control systems of induction motor. The gain matrix of the observer was chosen by genetic algorithm and alternatively by pole placement method. It has been shown that adaptive proportional observer is stable if the motor runs at slip larger than the boundary slip determined for the observer. Moreover, it has been shown that using the optimization method it is possible to achieve better dynamic properties of the observer.
Selected elements of the payment cards system in Poland
- Piotr Kasprzak
2016
The following article describes the current situation of the selected elements of the payment cards system in Poland. The first part of the paper include the most common definition as well as the abbreviated history of payment cards implementation in Poland. Next, the author presents the key numbers related to the nowadays situation on the market together with benefits of using the payment cards in the whole economic system. At the end, the article include the most common challenges of the payment cards, including the frauds and possible misusage.
Selected issues on the role of electric lighting in the regeneration programs of urban spaces in Poland
- Natalia Sokół
- Justyna Martyniuk-Pęczek
2016 Pełny tekst Przegląd Elektrotechniczny
This paper reflects on the basic research done in the area of outdoor public lighting in regard to regeneration processes. The general purpose of this scientific paper is to investigate the role that lighting design plays within regeneration frameworks. Referring to a wide spectrum of academic publications, the paper provides an overview of regeneration and outdoor public lighting objectives. Emphasize is put on the obstacles for lighting design implementations in the regeneration processes in Poland.
Selected organophosphorus compounds with biological activity. Applications in medicine
- Sebastian Demkowicz
- Janusz Rachoń
- Mateusz Daśko
- Witold Kozak
2016 RSC Advances
The purpose of this article is to provide an overview of the latest applications of organophosphorus compounds (OPs) that exhibit biological activity. A large family of OPs have become popular in recent years. The practical application of OPs in modern medicine has been attributed to their unique properties. In this article, the methods used to select these compounds will be emphasized. This paper will first outline the findings of a literature review on OPs, including anticancer and antiviral agents, bisphosphonates, phosphorus analogues of amino acids and peptides, and organophosphorus metal complexes, and secondly, it will classify the compounds according to their biological activity and applications in the treatment of diseases.
Selected papers from the Smart Engineering of New Materials Conference, 22-25 June 2015, Lodz, Poland
- Aleksandra Sokołowska
- Piotr Niedzielski
- Jan Kazimierz Szmidt
- Stanisław Mitura
- Dorota Bociaga
- Robert Bogdanowicz
2016 DIAMOND AND RELATED MATERIALS
Editorial to the special issue is a collection of the articles presented at Smart Engineering of New Materials (SENM2015) Conference, held in Lodz, Poland on June 22-25, 2015 (SENM 2015).
Selecting the optimum location for logistics facilities using Solver
- Anna Baj-Rogowska
2016 Pełny tekst Torun Business Review
Siting logistics facilities strategically in the most costeffective geographic location is one of the key decisions a contemporary company will make. The aim of the paper is to present a solution to this problem using the Solver add-on. In the case study discussed in the paper, the company’s central warehouse location was selected based on the classic location theory, which addresses the need to minimize the cost of transport. The mathematical model of the exercise is based on the Euclidean coordinates metrics. The method used in the study is summarised in the context of its strengths and weaknesses.
Self diagnostics using smart glasses - preliminary study
- Adam Bujnowski
- Jacek Rumiński
- Piotr Przystup
- Krzysztof Czuszyński
- Tomasz Kocejko
2016
n this preliminary study we analyzed the possibility of the reliable measurement of biomedical signals with some potential hardware extensions of smart glasses. Using specially designed experimental prototypes four category of biomedical signals were measured: electrocardiograms, electromyograms, electroencephalograms and respiration waveforms. Experi- ments with volunteers proved that using even simple construc- tion of sensors it is possible to reliable measure biomedical signals with the quality enough for screening purposes as for the needs of simple interaction between an user and smart glasses.
Self-Organization in Multi-Agent Systems Based on Examples of Modeling Economic Relationships between Agents
- Rafal Krolikowski
- Michal Kopys
- Wojciech Jedruch
2016 Pełny tekst FRONTIERS IN ROBOTICS AND AI
The goal of the research was to observe and analyze self-organization patterns in Multi-Agent Systems (MAS) by modeling basic economic relationships between agents forming a closed loop of relations necessary for their survival. The paper describes a worked-out MAS including an example of a production cycle and used economic rules. A special focus is put on behavior rules and decision systems of an individual agent such as: product advertising, price and purchase negotiations, dealing in the context of limited resources, and time constraints to make a decision. The MAS was implemented in a dedicated environment, and a number of simulations were carried out. The paper reports some of the recorded self-organization patterns, and their dynamics over time in terms of their spatial arrangement or mutual relations (e.g., bargain price, market shares, etc.), provides analysis and discussion, and shows the direction of further research.
Semantic technologies based method of collection, processing and sharing information along food chain
- Dobrowolski Dariusz
- Andrzej Marciniak
- Grzegorz Bartnik
- Paweł Kapłański
- Zdzisław Łojewski
2016 Information Systems in Management
In the paper the method of collecting, processing and sharing information along food chain is presented. Innovative features of that method result from advantages of data engineering based on semantic technologies. The source to build ontology are standards and regulations related to food production, and data collected in databases owned by food chain participants. It allows food chain information resources can be represented in semantic languages RDF/RDFS/OWL and form semantic database where data are easily integrated according to various criteria using automatic inference algorithms. Feasibility of proposed method is achievable with Ontorion Knowledge Framework.
Semi complex navigation with an active optical gesture sensor
- Krzysztof Czuszyński
- Jacek Rumiński
- Adam Bujnowski
- Jerzy Wtorek
2016
This paper presents the methods of diversified touchless interactions between a user and a mobile platform utilizing the optical gesture sensor. The sensor uses 8 photodiodes to measure the reflected light in the active mode (using embedded LEDs) or it measures shadows caused by fingers in the passive mode. Several algorithms were implemented: automatic mode switching, adaptive illumination level compensation, resolution improvements using model to data fitting, etc. The embedded processor delivers recognized static or dynamic gesture codes, location of fingers, etc. Thanks to the sparse construction of the sensor and number of the detectors, it handles a few discrete but also continuous gestures. The most important features of the sensor are: low power and computational requirements in comparison to vision based gesture recognition systems and that it is a septic safe interface. It was embedded into smart glasses platform.
Semi-transparent ordered TiO2 nanostructures prepared by anodization of titanium thin films deposited onto the FTO substrate
- Mariusz Szkoda
- Anna Lisowska-Oleksiak
- Katarzyna Grochowska
- Łukasz Skowroński
- Jakub Karczewski
- Katarzyna Siuzdak
2016 APPLIED SURFACE SCIENCE
In a significant amount of cases, the highly ordered TiO2nanotube arrays grow through anodic oxidationof a titanium metal plate immersed in electrolyte containing fluoride ions. However, for some practicalapplications, e.g. solar cells or electrochromic windows, the semi-transparent TiO2formed directly onthe transparent, conductive substrate is very much desired. This work shows that high-quality Ti coatingcould be formed at room temperature using an industrial magnetron sputtering system within 50 min.Under optimized conditions, the anodization process was performed on 2 m titanium films depositedonto the FTO (fluorine-tin-oxide) support. Depending on the electrolyte type, highly ordered tubular orporous titania layers were obtained. The fabricated samples, after their thermal annealing, were inves-tigated using scanning electron microscopy, Raman spectroscopy and UV–vis spectroscopy in order toinvestigate their morphology, crystallinity and absorbance ability. The photocurrent response curves indi-cate that materials are resistant to the photocorrosion process and their activity is strongly connectedto optical properties. The most transparent TiO2films were fabricated when Ti was anodized in waterelectrolyte, whereas the highest photocurrent densities (12 A cm−2) were registered for titania receivedafter Ti anodization in ethylene glycol solution. The obtained results are of significant importance in theproduction of thin, semi-transparent titania nanostructures on a commercial scale
Sensorless control of five-phase induction machine supplied by the VSI with output filter
- Marcin Morawiec
- Patrick Strankowski
- Arkadiusz Lewicki
- Jarosław Guziński
2016
In this paper, a novel sensorless control structure based on multi-scalar variables is proposed. The tatic feedback control law is obtained by using the multi-scalar variables transformation, where the multi-scalar variables approach allows a full linearization of the nonlinear system. The control system could be described as “optimized” because of the minimized number of controllers. Furthermore, control system is divided into two independent control systems which are synchronized by additional controllers. The first control system is responsible for the generation of the 1st fundamental harmonic, while the second control system is responsible for the generation of the 3rd harmonic. Both control systems are synchronized and ensure a trapezoidal shape of air gap induction waveform regardless of the machine operation point. In order to ensure a sensorless control system the rotor angular speed and the state variables are estimated by a speed observer. This speed observer is based on the backstepping approach. All analytical proposed assumptions are confirmed by simulations and experimental results.
Sensorless Fault Detection of Induction Motor with Inverter Output Filter
- Patrick Strankowski
- Jarosław Guziński
2016
The paper presents the problem of monitoring and fault detection of a sensorless voltage inverter fed squirrel cage induction motor with LC filter. The detection is based on load torque estimation of the investigated torque transmission system. The load torque is calculated besides the computation of other variables that are mandatory for sensorless drive operation such as rotor flux and speed. The implemented LC filter smooths the voltage inverter output voltage to a close sinusoidal shape and improves the efficiency and faultless operation time of the motor. Nevertheless, this additional elements have to be considered in the control structure whereby the control will become more complicated. The properties of an observer system will be compared with focus on disturbance detection in a torque transmission system. The tests are done on a drive system which consists of two coupled 5.5 kW squirrel cage induction motors, where one machine serves as disturbance generator of different amplitudes and frequencies. The second machine represents the investigated object with LC filter and is equipped with a disturbance detection procedure. The paper includes theoretical background as well as the experimental results of the proposed solution.
Sensors for Rapid Detection of Environmental Toxicity in Blood of Poisoned People
- Małgorzata Szczerska
- Katarzyna Karpienko
- Maciej Wróbel
- Valery Tuchin
2016
Recently, the diagnosis and treatment of poisoned person can be done only in specialized centers. Furthermore, currently used clinical methods of intoxication diagnosis are not sufficient for early detection. Conventional laboratory tests based on urine and blood require professional, high skilled staff, high cost equipment as well as they are arduous and lasting analytical procedures. There is a need to elaborate relatively cheap and easy to use tests, which can simplify and shorten the process of diagnosis of intoxicated patients as well as simply monitoring of patients from high-risk groups (firemen’s, miners, security, policemen, soldiers etc.) having contact with toxic gases. This chapter focuses on novel, early detection sensor for rapid diagnostics of environmental toxicity in blood of people intoxicated with carbon monoxide. Sect. 1 presents, a brief overview of physiological relevance of blood carbon monoxide levels on poisoning and overview of commercially available methods of CO detection in human blood. In Sect. 2 the optical properties of blood are presented. Section 3 shows optoelectronic systems, such as absorption spectroscopy and low-coherence interferometry designed to detect optical properties of blood, such as refractive index, absorption. In Sect. 4, the sensor for detection of environmental toxicity in blood is presented. The application of the sensor can shorten the time of analyses of poisoned patients. It will be dedicated to support diagnostics of all patients in bad clinical state, where anamnesis is difficult to obtain, intoxicated people or fire victims. We assume to use such method in the Emergency Departments, small clinics and doctors’ offices. In the Sect. 5 the hollow core microstructured waveguide biosensors for applications in biomedical sensors are presented. This waveguide can be used for investigation of optical parameters (scattering, refractivity and other) of many biological liquids. The last section focuses on our conclusion about optoelectronic method which can be used for rapid detection of environmental toxicity in blood of poisoned people.