Wyniki wyszukiwania dla: medium
-
Medium aevum
Czasopisma -
Information, Medium, and Society
Czasopisma -
Imago Temporis-Medium Aevum
Czasopisma -
Medium voltage drives - challenges and requirements
PublikacjaThe design and application of medium voltage (MV) drives are associated with different requirements related to the line side and motor side of the drive. This paper presents a brief review of the existing challenges and requirements for employing medium voltage drives in various industries. Line side, motor side, and converterproblems and requirements are described. The aim of the paper is to review the existing problems to allow...
-
Small and Medium-Sized Enterprises in Poland
Publikacja -
Instant Messaging als neues kommunikationsinstrumentarium in eLearning systemen
PublikacjaDokonano analizy mozliwości implementacji komunikatorów w platformach zdalnego nauczania. Przedstawiono możliwe rozwiązania. Przedyskutowano wady i zalety poszczególnych rozwiazań.
-
Medium-Voltage Drives: Challenges and existing technology
PublikacjaThe article presents an overview of state-of-art solutions, advances, and design and research trends in medium-voltage (MV) drive technologies - and also discusses the challenges and requirements associated with the use of such drives. The choice and deployment of MV drives in industries are associated with numerous requirements related to the front-end converter (grid side) and inverter (machine side). The focus is on solutions...
-
Laboratory tests of medium voltage switchgear isolators
Publikacja -
Resonant Frequencies in Microstrip Structure with Omega Medium Substrate
PublikacjaThe paper presents the research on a rectangular microstrip structure with multilayer substrate containing dielectric and omega medium layers. The effect of pseudochiral medium layer location in the substrate and its thickness on the resonant frequency of the rectangular microstrip structure is investigated. The numerical analysis of investigated structures is based on expansion of electric and magnetic fields. Utilizing the continuity...
-
Hysteresis modelling of a medium frequency single-phase transformer
PublikacjaThe article describes a feedback Preisach hysteresis model equivalent circuit implementation of a medium frequency single-phase transformer being a part of a high power and high efficiency DC-DC converter. The macroscopic models of magnetic hysteresis are introduced and the feedback Preisach model is selected for further analysis. The hysteresis model is developed for a prototype transformer and the hysteresis loops are compared...
-
Determination of Mathematical Model Parameters of a Medium Frequency Transformer
PublikacjaThe paper presents the results of experimental studies of the medium frequency transformer. The object of the research was a prototype of a single-phase transformer with a core made of ferrite I-core elements and windings made of Litz conductors. The research was carried out to determine the parameters of the transformer's mathematical model. The scope of the tests included determining the magnetic hysteresis loop and measuring...
-
Some geomechanical properties of a biopolymer treated medium sand
PublikacjaSome geomechanical properties of a biopolymer treated medium sand. This paper presents a laboratory assessment of geomechanical properties of sandy soil improved by biopolymer application. Additives (biosubstance) consist of polysaccharides and water. Biosubstance used in the project was xanthan gum, which comes from bacteria Xanthomonas campestris. Triaxial shear compression tests and unconfi ned compression tests were carried...
-
Modelling and analysis of medium frequency transformers for power converters
PublikacjaThe evolutions in power systems and electric vehicles, related to the economic opportunities and the environmental issues, bring the need of high power galvanically isolated DC-DC converter. The medium frequency transformer (MFT) is one of its key components, enabled by the increasing switching frequency of modern power semiconductors like silicon carbide transistors or diodes. The increased operating frequency offers small...
-
ANALYSIS OF MEDIUM TERM WAVE CLIMATE IN A TIDAL BASIN
Publikacja -
Cullet As Filter Medium For Swimming Pool Water Treatment
PublikacjaKontrola jakości wody w basenach kąpielowych może być prowadzona poprzez oczyszczanie wody z uwzględnieniem filtracji i dodawaniemśrodków dezynfekcyjnych. Zanieczyszczenia wody nie zawsze mogą byćskutecznie usuwane przy stosowaniu konwencjonalnych metod uzdatnianiawody. W doświadczeniu zbadano osady powstałe na złożu piaskowym,stwierdzono nieefektywną pracę filtrów piaskowych. Porównano dwazłoża filtracyjne: piasek kwarcowy i...
-
Voltage Harmonics Measuring Issues in Medium Voltage Systems
PublikacjaW rozdziale przedstawiono zagadnienia związane z dokładnością pomiarów zniekształceń harmonicznych napięcia z wykorzystaniem przekładników napięciowych w sieciach średnich napięć.
-
Photocatalytic treatment of wastewater generated on small and medium vessels
PublikacjaW związku z uregulowaniami prawnymi zabronione jest wprowadzanie ścieków szarych z ze statków bezpośrednio do wód morskich. Zanieczyszczenia znajdujące się w tych ściekach muszą być usunięte przed ostatecznym zdeponowaniem. Pozwala na to zastosowanie oczyszczania fotokatalitycznego oraz fotokatalizatorów aktywowanych promieniowaniem z zakresu widzialnego. W artykule przedstawiono pływającą jednostkę badawczą wyposażoną w system...
-
Modeling of the acoustic waves propagation in non-homogeneous medium
PublikacjaRozważano zagadnienie propagacji fal w ośrodku niejednorodnym. Przedstawiono model matematyczny i przykładowe wyniki badań numerycznych. Model matematyczny zbudowano w oparciu o równanie KZK. Do rozwiązania zagadnienia zastosowano metodę różnic skończonych. Badano zmiany ciśnienia i zmiany widma odpowiednio w ośrodku jednorodnym i niejednorodnym.
-
Polish small and medium enterprises : chances, barries and challenges
PublikacjaLata dziewięćdziesiąte przyniosły gospodarce polskiej bardzo szybki wzrost sektora małych i średnich przedsiębiorstw. Jego dynamika miała jednak tendencję gasnącą, szczególnie u progu XXI wieku. Wyjaśnienie przyczyn tych zjawisk może stanowić przesłankę dla oceny bieżącej polityki państwa wobec MSP, a także dla formułowania założeń przyszłej polityki na tym obszarze. Prezentowane opracowanie pokazuje, jak działania państwa w zakresie...
-
Subcritical Thermodynamic Cycles with Organic Medium and Isothermal Expansion
PublikacjaThe efffciencies of the Organic Rankine Cycle (ORC) are not very high and only very seldom do they exceed 20%. The increase and optimization of initial parameters and certain modifications of the thermodynamic cycle make it possible to overcome these drawbacks. A new modified cycle has been described and analyzed in detail in the paper. Similarly to the Ericsson cycle for gas turbines, isothermal expansion in the turbine is suggested...
-
Podmiot mówiący Miłosza jako medium pamięci o totalitaryzmach
Publikacja -
Resonance in Rectangular Microstrip Structure Loaded with a Pseudochiral Medium Layer
PublikacjaA rectangular microstrip structure with multilayer substrate containing dielectric and pseudochiral medium layers is studied in this paper. The effect of Omega medium layer location in the substrate and its thickness on the complex resonant frequency of the rectangular microstrip structure is investigated.
-
Infiltration in a double-porosity medium: Experiments and comparison with a theoretical model
PublikacjaThis paper presents experimental verification of the mathematical model of unsaturated flow in double‐porosity soils developed by the asymptotic homogenization method. A series of one‐dimensional infiltration experiments was carried out in a column filled with a double‐porosity medium composed of a mixture of sand and sintered clayey spheres arranged in a periodic manner. The unsaturated hydraulic properties of each porous material...
-
Voltage Transients Transfer over Medium Voltage Instrument Transformers
PublikacjaThis paper presents voltage harmonic transfer accuracy problems through voltage transformers which are used in power quality monitoring systems in medium and high voltage grids. A simplified lumped parameters circuit model of the voltage transformer is proposed and verified by simulation and experimental investigations. A number voltage transformers typically used in medium voltage grid has been tested in the conducted disturbances...
-
Voltage Harmonics Transfer through Medium Voltage Instrument Transformers
PublikacjaVoltage transformers are widely used in power quality monitoring systems in medium and high voltage grids. This paper presents accuracy problems related to voltage harmonics transfer through instrument transformers. A simplified lumped-parameters wideband circuit model of the voltage transformer is proposed and verified by simulation and experimental investigations. A number of voltage transformers have been tested in the frequency...
-
A new approach to cross-bonding in medium voltage cable lines
PublikacjaThe medium voltage underground cable sheaths are usually bonded and earthed in every substation on the cable route. This results in additional power losses in the sheaths. The paper presents an idea of reducing power losses caused by sheaths cross-bonding. The idea of sheaths cross-connecting only in selected MV/LV substations is given instead of a typical solution, where sheaths cross-bonding requires installing additional joints...
-
Modern solutions in the field of microextraction using liquid as a medium of extraction
PublikacjaThe monitoring of compounds present in samples at trace/ultra-trace level usually requires a preliminary step of isolation and/or enrichment of analytes. Against, sample preparation is considered as crucial part of whole analytical procedures, in particular in samples characterized by complex matrices composition. Several new miniaturized extraction techniques is introduced and extensively applied to different type of samples....
-
Zastosowanie metody elementów skończonych w procesie topnienia medium
PublikacjaW artykule przedstawiono wyniki analizy numerycznej procesu topnienia materiału w dwóch modelach cieplnych. Założono, że w rozpatrywanych układach transport ciepła zachodzi wyłącznie mechanizmem przewodzenia. Obliczenia zrealizowano z wykorzystaniem metody entalpowej za pomocą programu ANSYS Fluent. Sprawdzono bilans energetyczny rozwiązania i wykazano prawność otrzymanych wyników.
-
The importance of a place in a small or medium - Sized Town.- Vol. 2
PublikacjaPublic space is a matter of concern for international humanitarian organisations. The paper describes the initiative of UNHabitat organisation for the creation of Charter of Public Space and the draft of this document. Next the definition of “place” is provided and the definitions of social capital and the bond between social capital and place attachment are presented. The actions proposed nowadays to create places are described....
-
Public Space in Medium-sized Town - Role in Development Policy
PublikacjaMiasta średniej wielkości odgrywają ważną, choć często niedacenianą rolę w sieci osadniczej Polski. Artykuł przedstawia specyfikę tej grupy miast w warunkach wdrażania reform ekonomicznej i terytorialnej. Szczególna uwaga skupiona jest na zjawisku, które nasiliło się od początku XXI wieku - zabiegach władz mających na celu zwiększenie atrakcyjności przestrzeni publicznych. W tekście przeanalizowane zostały różne strategie rozwoju,...
-
The influence of fuel type on heat balance of medium-speed engine
PublikacjaW artykule zaprezentowano analizę wpływu rodzaju zastosowanego paliwa na bilans cieplny silników średnioobrotowych stosowanych w energetyce stacjonarnej. Przedmiotem analizy są silniki ZS i ZI zasilane gazem ziemnym oraz silniki ZS zasilane olejem napędowym. Dodatkowo analizę uzupełniono o wyniki obliczeń wykonanych dla silników dwupaliwowych, tzn. silników, w których zapłon mieszanki paliwowo gazowej realizowany jest przez pilotażowy...
-
Instruments of supporting the innovation of small and medium enterprises in the Pomorskie Province
Publikacja...
-
Risk Scoring Models for Trade Credit in Small and Medium Enterprises
Publikacja -
An update on medium- and low-abundant blood plasma proteome of horse
Publikacja -
The balanced scorecard method applying in small and medium enterprise management
PublikacjaAutorzy podejmują dyskusję z poglądem, że Strategiczna Karta Wyników jako metoda zarządzania strategicznego przedsiębiorstwem powinna raczej być stosowana w sektorze dużych przedsiębiorstw, niż małych i średnich. Wskazują na istotne trudności związane z wdrażaniem BSC w aspektach: kosztów, czasochłonności, nadzwyczajnego wysiłku organizacji, nowego spojrzenia na komunikację w dół struktury, dalekiego horyzontu planowania, sceptycyzmu...
-
MAC contention in a wireless LAN with noncooperative anonymous stations
PublikacjaRozpatruje się model sieci bezprzewodowej wykorzystywanej przez wzajemnie nieprzenikalne grupy stacji anonimowych. Przy ustalonej regule wyłaniania zwycięzcy rywalizacji o dostęp do medium, stacje posiadają swobodę wyboru strategii selekcji szczeliny rywalizacyjnej. Dla szerokiego zbioru możliwych strategii proponuje się metodologię ich oceny i testowania wydajności opartą na pojęciu zbliżonym do ewolucyjnej stabilności.
-
Analysing selection of low-temperature medium for cogeneration micro power plant
PublikacjaThe article analyses the ORC system working with dry and wet low-boiling media which are most frequently used in installations of this type. Two types of cycles were examined, which were the cycle with heat regeneration for dry media: fc72, hfe7100, R227ea, R245fa, R423a and R600a, and the cycle without heat regeneration for wet media: R11, R12, R134a, R718 and 507a. The calculations were performed for the assumed required thermal...
-
Analysing selection of low-temperature medium for cogeneration micro power plant
PublikacjaThe article analyses the ORC system working with dry and wet low-boiling media which are most frequently used in installations of this type. Two types of cycles were examined, which were the cycle with heat regeneration for dry media: fc72, hfe7100, R227ea, R245fa, R423a and R600a, and the cycle without heat regeneration for wet media: R11, R12, R134a, R718 and 507a. The calculations were performed for the assumed required thermal...
-
Design analysis of Tesla micro-turbine operating on a low-boiling medium
PublikacjaThis paper presents results of the design analysis of a Tesla bladeless turbine intended for a co-generating micro-power plantof heat capacity 20 kW, which operates in an organic Rankine cycle on a low-boiling medium. Numerical calculations of flowin several Tesla turbine models were performed for a range of design parameters. Results of investigations exhibit interestingfeatures in the distribution of flow parameters within the...
-
Earthquake-Induced Pounding of Medium-to-High-Rise Base-Isolated Buildings
PublikacjaDuring earthquakes, out-of-phase vibrations in adjacent buildings with limited distance may cause pounding between them. In recent years, the use of seismic isolation has expanded considerably as an effective approach to reduce seismic damage. However, the isolated building experiences large displacements during earthquakes, and there is a possibility of collisions with adjacent structures. The research on earthquake-induced pounding...
-
Knowledge management approaches of small and medium-sized firms: a cluster analysis
PublikacjaPurpose This paper aims to categorise the approaches to knowledge management (KM) by companies. In the literature, there is no consensus on a universal or “best” approach to KM. Especially, this paper singles out and discusses the variegated features that characterise the implementation of KM by small- and medium-sized enterprises (SMEs) having different characteristics. Design/methodology/approach A cluster analysis was used...
-
Analysis and Detection of Faults at Insulated Conductors of Overhead Medium Voltage Lines
PublikacjaThe paper dealt with the issue of breakdowns detection of isolated hanging wires on the medium-voltage transmission. The main aim of article is to describe the function of created breakdowns detector and evaluation its. The breakdowns detector is created based in indicators of faults such as touch between tree limbs and insulated wire, touch tree limbs with several phases or fall insulated wire on the ground. Breakdowns detector...
-
Training Services in Small and Medium-sized Enterprises: Evidence from Poland
PublikacjaIn the knowledge-based economy knowledge and skills are becoming more and more significant for the success of companies. This applies also to firms from small and medium-sized enterprises (SMEs) sector. As large companies in many cases posses special divisions devoted to trainings, they normally have no problems with updating the knowledge and skills of their employees. The situation is different with regard to SMEs, which often...
-
Knowledge Safety in Small and Medium Sized Service Companies:Case Study Analysis
PublikacjaPurpose: This paper aims to explore the topic of knowledge safety, defined as the state of knowledge being safe from loss, attrition, oblivion or theft. The paper first presents a theoretical background and review of previous studies on knowledge loss and retention and then illustrates the topic of knowledge safety with ten case studies from the small and medium-sized enterprises (SMEs) sector. Methodology: The paper is based...
-
Improvement of Task Management with Process Models in Small and Medium Software Companies
PublikacjaSmall and medium software companies exhibit many special features that give reason for a dedicated approach to process improvement. They often cannot afford implementing maturity models or quality standards both in terms of time and money. Instead, they expect simpler solutions that can allow to run projects in more systematic and repeatable way, increase quality and knowledge management. In this paper, we present a method focused...
-
Shaping the competence of future spatial policymakers for small- and medium-sized towns
PublikacjaIn this article, the authors aim to present issues addressed within the framework of the architecture and spatial development courses offered by the Faculty of Architecture at Gdańsk University of Technology (FA-GUT), Gdańsk, Poland. These issues concern competence in the education of future spatial planners and their readiness to deal with the development challenges facing small- and medium-sized towns. Within the article, the...
-
High power, medium voltage, modular active power filtering system
Publikacja -
Selected Technical Requirements for Photovoltaic Plant Interconnection with a Medium Voltage Grid
PublikacjaThe article discusses some selected technical requirements, which according to these authors should be recognised and met by photovoltaic power plants connected to national distribution grids in the context of their likely development. This development today is limited, since Polish legislation has not implemented the relevant EU Directive [8]. The study points out the purposefulness of incorporating the necessary requirements...
-
MEDIUM-TERM WAVE AND CURRENT MODELLING FOR A MESOTIDAL WADDEN SEA COAST
Publikacja -
Ciecze głęboko eutektyczne pochodzenia naturalnego jako nowe medium ekstrakcji
Publikacja-
-
Iron filled single-wall carbon nanotubes – A novel ferromagnetic medium
Publikacja -
Wytwarzanie bezmatrycowego materiału odniesienia lotnych analitów w medium gazowym
PublikacjaW pracy przedstawiono wyniki kolejnego etapu badań nad możliwością wytworzenia bezmatrycowego materiału odniesienia lotnych związków organicznych w mediach gazowych. Do generowania składników mierzonych (chlorek metylu lub eten) odpowiednich gazowych mieszanin wzorcowych wykorzystano technikę termicznego rozkładu związków powierzchniowych. Przedmiotem badań były:-włókna szklane z naniesionym cienkim filmem poliimidowym, pokryte...
-
Cash Flow Management in Small and Medium Enterprises in Times of Economic Uncertainty
Publikacja -
Properties of a polyethyleneimine-based sensor for measuring medium and high relative humidity
PublikacjaW artykule przedstawiono metodę przygotowania filmów polimerowych o zwiększonej odporności na działanie wody. Polietylenoimina została usieciowana w podwyższonej temperaturze. Określono optymalną kompozycję polimeru oraz temperaturę sieciowania. Czujniki rezystancyjne przygotowano metodą ''dip-coating''. Otrzymane czujniki charakteryzują się doskonałą trwałością w wysokich wilgotnościach. Elektryczne parametry czujników określono...
-
Electromagnetic wave scattering by a set of axially symmetric omega-medium cylinder
PublikacjaZaprezentowano analizę rozproszenia fali elektromagnetycznej od układu obiektów cylindrycznych zbudowanych z materiałów pseudochiralnych, umieszczonych w złączach falowodowych lub wolnej przestrzeni. Analiza bazuje na iteracyjnej procedurze rozproszenia i metodzie dopasowania rodzajów.
-
Modeling of the finite amplitude plane wave propagation in non-dissipative medium
PublikacjaPraca prezentuje wyniki analizy teoretycznej zagadnienia propagacji fali płaskiej o skończonej amplitudzie w ośrodku wodnym bez dyssypacji. Przedstawiono model matematyczny i przykładowe wyniki obliczeń numerycznych. Model matematyczny zbudowano w oparciu o jednowymiarowe równania mechaniki płynów. Do rozwiązania zagadnienia zastosowano metodę różnic skończonych. Analizowano zmiany ciśnienia i zmiany widma. Badano zbieżność i dokładność...
-
Energy losses reduction in the medium voltage cable line – case study
PublikacjaThe paper presents an analysis of energy losses in a power cable system, which is composed of two 30 kV cable lines. This cable system is located at the seaside holiday area, so the load profile during a year is specific. Energy losses related to reactive power transmission, as well as to currents induced in the sheaths of the cables, are subject to analysis. Measurements were made in the system in order to prepare a computer model...
-
Subjective and Objective Quality Evaluation Study of BPL -PLC Wired Medium
PublikacjaThis paper presents results of research on the effectiveness of bi-directional voice transmission in a 6 kV mine cable network using BPL-PLC (Broadband over Power Line - Power Line Communication) technology. It concerns both emergency cable state (supply outage with cable shorted at both ends) and loaded with distorted current waveforms. The narrowband (0.5 MHz–15 MHz) and broadband (two different modes, frequency range of 3 MHz–7.5...
-
Ionic liquids as an effective and eco-friendly medium for synthesis of nitrosubstituted norbornene analogs Ciecze jonowe jako efektywne i przyjazne środowisku medium dla syntezy nitropodstawionych analogów norbornenu
Publikacja -
Shielded coupled strip and slot guides with a thin omega pseudochiral medium layer
PublikacjaA method of moments combined with mode matching technique is applied to analyze the shielded coupled strip and slot line structures containing a thin plate of Omega pseudochiral medium. The boundary problems are simplified by introducing for omega medium the approximate continuity conditions. Such mathematical model allows to examine the field displacement effect appearing in the considered guide resulting from the coupling between...
-
Verification of a Novel Method of Detecting Faults in Medium-Voltage Systems with Covered Conductors
PublikacjaThis paper describes the use of new methods of detecting faults in medium-voltage overhead lines built of covered conductors. The methods mainly address such faults as falling of a conductor, contacting a conductor with a tree branch, or falling a tree branch across three phases of a medium-voltage conductor. These faults cannot be detected by current digital relay protection systems. Therefore, a new system that can detect the...
-
The Effect of Posaconazole, Itraconazole and Voriconazole in the Culture Medium on Aspergillus fumigatus Triazole Resistance
PublikacjaTriazoles are the only compounds used as antibiotics in both medicine and agriculture. The presence of triazoles in the environment can contribute to the acquisition of azole resistance among isolates of Aspergillus fumigatus. The objective of this study was to investigate the effect of A. fumigatus exposure to triazoles on susceptibility to these compounds. Seventeen triazole-resistant and 21 triazole-sensitive A. fumigatus isolates...
-
Assessment of preparedness for Lean Six Sigma projects in small and medium-sized organizations
PublikacjaThe article presents a proposal for the maturity indicator of Lean Six Sigma projects within the framework of the original comprehensive methodology of Lean Six Sigma implementation dedicated to the SME sector. The indicator allows an LSS project to be matched to the real needs and preparedness of any small or medium-sized organization. The indicator was designed as a result of pilot research conducted in Polish and French SMEs...
-
Experimental and Numerical Analysis of Air Trapping in a Porous Medium with Coarse Textured Inclusions
PublikacjaThe paper presents a 2D upward infiltration experiment performed on a model porous medium consisting of fine sand background with two inclusions made of coarser sands. The purpose of the experiment was to investigate the effects of structural air trapping, which occurs during infiltration as a result of heterogeneous material structure. The experiment shows that a significant amount of air becomes trapped in each of the inclusions. Numerical...
-
A demand for innovation support in samll and medium-sized enterprises in the baltic sea region
Publikacjathe aim of the expertise is to analyze the actual demand of smes from the baltic sea region for innovation support. the results of the conducted study can help formulate recommendations designed to increase innovation and competitiveness of smes in the baltic sea region in the future. research activities of this study include: the evaluation of innovation level of the baltic sea region enterprises (type and intensity of implemented...
-
Bacterial cellulose yield increased over 500% by supplementation of medium with vegetable oil
Publikacja -
Effect of temperature and gaseous medium on the structure and microhardness of the cobalt base clad layers
PublikacjaBadano wpływ temperatury utleniania na mikrostrukturę i mikrotwardość napawanych warstw ze stopu kobaltu. Warstwy wytwarzano za pomocą napawania plazmowego (pta) na przylgniach zaworów wylotowych wykonanych ze stali x40CrSiMo10-2. Stop kobaltu był poddany utlenianiu w powietrzu w temperaturach od 750 °C to 1100 °C i w gazach wylotowych w temperaturze 750 °C. W wyniku utleniania zaobserwowano zmanę w mikrotwardości warstw. W zewnętrznej...
-
Catalytic Degradation of Safranin T in Aqueous Medium Using Non-conventional Processes
Publikacja -
Structural funds within the IROP in revitalisation of medium-sized towns in the Pomerania Province
PublikacjaW artykule przedstawiono wykorzystanie środków na rewitalizację w ramach Zintegrowanego Programu Operacyjnego Rozwoju Regionalnego (ZPORR) na lata 2004-2006 w Województwie Pomorskim w grupie miast średnich (20-50 tys. mieszkańców).
-
A study HIPERLAN-type noncooperative medium access control setting in a wireless LAN
PublikacjaDla dostępu MAC przeanalizowano strategię określania długości transmisji w fazie eliminacji zakładając indywidualną optymalizację uzyskanego pasma komunikacyjnego. Zaproponowano różne warianty polityki wyłaniania zwycięzcy eliminacji, mające na celu wyrównanie szans stacji kooperacyjnych i niekooperacyjnych.
-
Molecular Dynamics study of short and medium range order in modified BGO glasses.
PublikacjaArtykuł przedstawia wyniki symulacji dynamiczno-molekularnychniemodyfikowanych i modyfikowanych szkieł BGO o różnych stechiometriach. Otrzymane wyniki dokładnie przedyskutowano pod kątem blisko- i średnio-zasięgowego uporządkowania atomów i porównano z innymi dostępnymi danymi literaturowymi.
-
Influence of Heat Treatment Temperature on Fatigue Toughness in Medium-Carbon High-Strength Steels
PublikacjaCurrent research has demonstrated that the tempering temperature affects the martensitic transformation of medium-carbon high-strength steels. This temperature plays an important role in the final microstructure, percentage ratios of martensite to ferrite phases and, consequently, in the mechanical properties and the fatigue response. So far, the relationship between the martensitic tempering temperature and the cyclic deformation...
-
HOW TO ASSESS THE MATURITY OF SMALL AND MEDIUM-SIZED ENTERPRISES TO LEAN SIX SIGMA PROJECTS
PublikacjaThis article describes the considerations for the implementation of the Lean Six Sigma (LSS) methodology in small and medium-sized enterprises. Pilot research was conducted in Polish and French SMEs (nine Polish and nine French enterprises from the service and production sectors) referring to the context of the implementation and application of the Lean Six Sigma concept. The studies led to the identification of the motives, needs,...
-
Cooperation in Creating Innovation in Polish Small and Medium-Sized Enterprises in the Light of Empirical Studies
PublikacjaNowadays, sources of competitive advantage and economic development are sought in the sphere of innovation. They are at the centre of interest of representatives of the world of politics, science, and business. Moreover, they have been incorporated into governmental and international strategic development programmes. This article attempts to characterize and evaluate cooperation in creating innovation in small and medium-sized...
-
Source-related Wavefields in Fluids and Dielectrics: A new way of Thinking about Medium Dynamics
PublikacjaAcoustic and electromagnetic wave phenomena may seem to have a proper formal representation in field theory dating from the 19th century, founded on the mathematics of complex functions. This paper shows, however, that when replacing the classical spectrum-domain approach related to the assumption of harmonic timeform of signals, with a time-domain approach imposingnorestrictionastotheclassoftimeevolutionofsourceandfieldsignals,...
-
ALD thin ZnO layer as an active medium in a fiber-optic Fabry-Perot interferometer
Publikacja.
-
Potato Juice, a Starch Industry Waste, as a Cost-Effective Medium for the Biosynthesis of Bacterial Cellulose
Publikacja -
ALD thin ZnO layer as an active medium in a fiber-optic Fabry–Perot interferometer
Publikacja -
Impact of the Regional Business Environment on the Development of Small and Medium-Sized Enterprises in Southern Poland
Publikacja -
Regional Context of Small and Medium-Sized Enterprises’ Development: Case Study of Southern Poland
Publikacja -
Small and Medium-sized Enterprises in Visegrad Countries towards Internationalisation Challenges in the European Union
PublikacjaThe chapter characterises and compares SMEs in Visegrad Countries and their international behaviours.
-
Characterization of small and medium enterprises (SMES) of Pomeranian Region in six sigma methodology application
PublikacjaThe paper presents the rarely researched and important issue for SMEs competitiveness - knowledge and practical application of Six Sigma methodology. The results of research conducted by Authors allow to answer the question - to what degree SMEs of Pomeranian region are aware of importance and prepared for systemic control and improvement of their processes?W opracowaniu poruszono istotne, z punktu widzenia podnoszenia konkurencyjności...
-
Economic growth and role of medium and low tech industries versus high tech industries
PublikacjaRozdział w monografii stanowiący kompleksową analizę wpływu oraz roli sektora niskich oraz średnich technologii we wzroście gospodarczym. Rola tych 2 sektorów jest przeciwstawiona roli sektora wysokich technologii we wzroście gospodarczym. Autorzy przeprowadzają analizę dla krajów OECD.
-
Influence of hydrophobic nanosilica and hydrophobic medium on water bound in hydrophilic components of complex systems
Publikacja -
PhageScore-based analysis of Acinetobacter baumannii infecting phages antibiotic interaction in liquid medium
Publikacja -
Impact of Euro 2012 on the Pomeranian Region and Its Small and Medium Enterprises in Terms of Competitiveness
Publikacja..
-
Influence of the internet and electronic commerce growth on polish small and medium enterprises. PODAĆ POLSKI TYTUŁ.
PublikacjaTechnological development in communication creates new possibilities for commercial activity . Each new medium was changing business processes . Internet does the same - implies rapid changes in every stage of commercial activity.The aim of this paper is to show that the Internet and Electronic Commerce are influencing the Small and Medium Enterprises (SMEs) development in Poland. For achieving this another issue had to be under...
-
3-phase medium frequency transformer for a 100kW 1.2kV 20kHz Dual Active Bridge converter
PublikacjaThe article presents a three-phase Medium Frequency Transformer being a part of a 100kW 1.2kV 20kHz Dual Active Bridge DC-DC converter. The transformer design is detailed focusing on winding and core power loss calculation. The high power three-phase MFT prototype is presented. The experimental results include the transformer impedance characteristics, no load test and three-phase DAB full load test waveforms
-
Lean Six Sigma in French and Polish Small and Medium-Sized Enterprises - The Pilot Research Results
PublikacjaThe article presents results of the research conducted in Polish and French small and medium-sized enterprises referring to the context of the implementation and application of the concept of Lean Six Sigma. The research was conducted in the form of case studies, observations and individual interviews. The pilot studies led to the identification of the needs, expectations, concerns and experiences of these companies. At the same...
-
The dying medium temperature impact on the final moisture content of pine wood at constant drying time
PublikacjaThe results of final moisture content of pine wood (Pinus sylvestris L.) after drying process are presented. The wood in the experiments was taken from the northern part of Pomeranian region in Poland. The drying process was performed in the experimental chamber equipped with the micro-jet heat exchanger. The air at temperatures of 40°C, 60°C, 80°C, 100°C and 120°C with relative humidity about 60% and atmospheric pressure was the...
-
Modified Preisach model of hysteresis in multi air gap ferrite core medium frequency transformer
PublikacjaThis article presents the modified Preisach model of hysteresis for a 3-phase medium frequency transformer in a 100 kW dual active bridge converter. The transformer magnetic core is assembled out of ferrite I-cores, which results in multiple parasitic air gaps. For this transformer, the hysteresis loops were measured and parameters of the Preisach model were determined. The Preisach distribution function is approximated with a...
-
Influence of laser processing of the low alloy medium carbon structural steel on the development of the fatigue crack
PublikacjaThe paper contains the results of the structural analysis, hardness tests and fatigue tests conducted for the medium carbon structural steel with low content of Cr and Ni after its processing with CO2 laser beam. Pre-cracks were made in the round compact tension (RCT) specimen used for fatigue test. Next, four paths, parallel to each other, were melted on both sides of the samples using a laser beam. The paths were perpendicular...
-
Knowledge Management Approaches of Small and Medium-Sized KIBS Firms: a Descriptive Analysis of Four Countries
PublikacjaPurpose –There is evidence that small and medium sized enterprises (SMEs) do not manage knowledge the same way as large firms, and that they approach knowledge management (KM) in various ways. However, the literature on this topic is still scarce and fragmented. In order to fill this gap, the paper aims to single out and discuss the different features that characterize the approaches to KM adopted by small companies. Design/methodology/approach...
-
Impact of Integrated European Business Environment on Small and Medium-sized Enterprises (SMEs) Cooperation Strategies
Publikacja -
3-phase medium frequency transformer for a 100kW 1.2kV 20kHz Dual Active Bridge converter
Publikacja -
25 kV–50 Hz railway supply modelling for medium frequencies (0–5 kHz)
Publikacja -
Synergistic effects of low-/medium-vacuum carbonization on physico-chemical properties and stability characteristics of biochars
Publikacja -
Softly switched model predictive control for control of integratedwastewater treatment system at medium time scale.
PublikacjaW przypadku gdy system jest sterowany za pomocą jednej, uniwersalnej strategii sterowania w pełnym zakresie jego obciążeń, powstają poważne trudności w znalezieniu optymalnego sterowania. W celu jak najlepszego dopasowania strategii sterowania do panujący warunków, zdefiniowano trzy stany operacyjne: normalny, zakłóceniowy oraz awaryjny. Dla tych stanów zaprojektowano odpowiednie strategie sterowania. W związku z tym pojawia się...
-
Corporate social responsibility in reference to environmental statements within EMAS system in small and medium enterprises
PublikacjaAccording to the corporate social responsibility concept, organisations should apply any mechanisms available supporting their business actions contributing i.e. to the improvement of natural environment. Among them is EMAS eco-management and audit scheme. The prove of its implementation is environmental statement and entering the organisation into a national EMAS register. The aim of the statement is informing the society and...
-
The new silica-based coated SPME fiber as universal support for the confinement of ionic liquid as an extraction medium
PublikacjaThe new silica-based SPME fiber coating is reported for the first time as universal support purposed to confinement of ionic liquid as an extraction medium. Fiber coating was prepared by the sol-gel process, using potassium silicate (K2SiO3) as a precursor and dimethylformamide (DMF) as a pore-forming medium. The concept of synthesis assumes obtaining a solid porous material on the surface of the glass rod and, being characterized...