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Investigations on mixture preparation for two phase adiabatic pressure drop of R134a flowing in 5 mm diameter channel
PublikacjaThe article presents detailed two-phase adiabatic pressure drops data for refrigerant R134a. Study cases have been set for a mass flux varying from 200 to 400 kg/m2 s, at the saturation temperature of 19.4 ◦C. Obtained experimental data was compared with the available correlations from the literature for the frictional pressure drop during adiabatic flow. Influence of mixture preparation on pressure drop was investigated, for...
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Novel Adaptive Method for Data Streams Allocation Based on the Estimate of Radio Channel Parameters in Heterogeneous WBAN Network
PublikacjaThe new adaptive method for data streams allocation in heterogeneous Wireless Body Area Networks and meas-urement equipment is presented. The results obtained using the developed method compared with the selected algorithms likely to be used in those networks. The pro-posed adaptive data streams allocation method based on radio channel parameters makes it even twice as efficient to use in terms of resources usage in a WBAN heterogeneous...
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A Computationally Efficient Model for Predicting Successful Memory Encoding Using Machine-Learning-based EEG Channel Selection
PublikacjaComputational cost is an important consideration for memory encoding prediction models that use data from dozens of implanted electrodes. We propose a method to reduce computational expense by selecting a subset of all the electrodes to build the prediction model. The electrodes were selected based on their likelihood of measuring brain activity useful for predicting memory encoding better than chance (in terms of AUC). A logistic...
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INVESTIGATION OF SOUR SUBSTANCES BY FIVE-CHANNEL POTENTIOMETRIC TASTE SENSOR CONTAINING ALL-SOLID-STATE- ELECTRODES (ASSEs)
PublikacjaAn elaboration of taste sensor for discrimination of different food products is of great importance for food industry. Potentiometric taste sensor containing ion selective electrodes with lipid/polymer membranes has already been applied commercially in food industry. However, time-consuming and demanding preconditioning method of ions selective electrodes as well as maintenance of electrodes’ bodies are disadvantages of this taste...
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Investigation of sour substances by five-channel potentiometric taste sensor containing all-solid-state-electrodes ( ASSEs)
PublikacjaAn elaboration of taste sensor for discrimination of different food products is of great importance for food industry. Potentiometric taste sensor containing ion selective electrodes with lipid/polymer membranes has already been applied commercially in food industry. However, time-consuming and demanding preconditioning method of ions selective electrodes as well as maintenance of electrodes’ bodies are disadvantages of this taste...
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Increased time varying heart rate and cardiovascular risk in hypertension – Benefit of selective I(f)channel inhibitor?
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Assessment of Wide-Sense Stationarity of an Underwater Acoustic Channel Based on a Pseudo-Random Binary Sequence Probe Signal
PublikacjaThe performances of Underwater Acoustic Communication (UAC) systems are strongly related to the specific propagation conditions of the underwater channel. Designing the physical layer of a reliable data transmission system requires a knowledge of channel characteristics in terms of the specific parameters of the stochastic model. The Wide-Sense Stationary Uncorrelated Scattering (WSSUS) assumption simplifies the stochastic description...
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A New Direct-Sequence Spread Spectrum Signal Detection Method for Underwater Acoustic Communications in Shallow-Water Channel
PublikacjaDirect-Sequence Spread Spectrum (DSSS) is one of the modulation and coding techniques used in Underwater Acoustic Communication (UAC) systems for reliable data transmision even at low signal levels. However, in a shallow water channel, there is a strong multipath propagation which causes a phase fluctuation of the received signal, affecting the performance of the spread-spectrum system. The article presents a differential method...
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Fluid structure interaction study of non-Newtonian Casson fluid in a bifurcated channel having stenosis with elastic walls
PublikacjaFluid–structure interaction (FSI) gained a huge attention of scientists and researchers due to its applications in biomedical and mechanical engineering. One of the most important applications of FSI is to study the elastic wall behavior of stenotic arteries. Blood is the suspension of various cells characterized by shear thinning, yield stress, and viscoelastic qualities that can be assessed by using non-Newtonian models. In this...
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Sensing Direction of Human Motion Using Single-Input-Single-Output (SISO) Channel Model and Neural Networks
PublikacjaObject detection Through-the-Walls enables localization and identification of hidden objects behind the walls. While numerous studies have exploited Channel State Information of Multiple Input Multiple Output (MIMO) WiFi and radar devices in association with Artificial Intelligence based algorithms (AI) to detect and localize objects behind walls, this study proposes a novel non-invasive Through-the-Walls human motion direction...
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Synchronic digital stereophotography and photogrammetric analyses in monitoring the flow of liquids in open channels
PublikacjaThe authors present the results of their research into photogrammetric documents based on synchronic digital images. Examples presented in the paper indicate the value of synchronic stereophotography in registering phenomena connected with liquids. Combining synchronic stereophotography with photogrammetric methods has allowed the authors to develop an application useful for monitoring the flow of a liquid in an open channel.
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Modern trends in internet marketing - Researching the virality of brands on social media channels
PublikacjaThis paper presents a new approach for the research and identification of users generated content on social media channels. For the online branding research is proposed the use of twi software - SentiOne and NodeXL. The combination of those tools elicit a different point of view of how to manage in an effective way the overflow of the content publish by single individuals in social media networks.
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Using Different Information Channels for Affect-Aware Video Games - A Case Study
PublikacjaThis paper presents the problem of creating affect-aware video games that use different information channels, such as image, video, physiological signals, input devices, and player’s behaviour, for emotion recognition. Presented case studies of three affect-aware games show certain conditions and limitations for using specific signals to recognize emotions and lead to interesting conclusions.
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Heat transfer enhancement, flow visualization and friction characteristics in rib-roughened channels
PublikacjaW pracy przedstawiono wyniki badań eksperymentalnych związanych z intensyfikacją wymiany ciepła w kanałach wyposażonych w żebra, które poprawiają warunki przejmowania ciepła od ścianki do przepływającego medium. W badaniach wykorzystano system PIV oraz termografię ciekłokrystaliczną.
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Modern trends in internet marketing - Researching the virality of brands on social media channels
PublikacjaThis paper presents a new approach for the research and identification of users generated content on social media channels. For the online branding research is proposed the use of twi software - SentiOne and NodeXL. The combination of those tools elicit a different point of view of how to manage in an effective way the overflow of the content publish by single individuals in social media networks.
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Cell Membrane Transport Mechanisms: Ion Channels and Electrical Properties of Cell Membranes
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Numerical and experimental investigation of thermal convection near electric devices with vertical channels
PublikacjaThis paper presents the results of numerical and experimental investigation of thermal convection near heat emitting surfaces of an electric device. For the intensification of thermal convection, special vertical channels were formed near the heat emitting surfaces of the device. An experimental test has proved that there is an optimal length of the channels – thermal convection is the most intensive then. Air velocity vectors...
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Design of Frequency-Reconfigurable Branch-Line Crossover Using Rectangular Dielectric Channels
PublikacjaThis paper presents an efficient yet straightforward passive reconfiguration technique to tune the operating frequency of a branch-line crossover (BLCO). The underlying principle is to fill rectangular dielectric channels (RDCs) prepared beforehand with either air or materials of different relative permittivity. Two configurations (one RDC and three RDCs in each arm) of the branch-line crossover are employed to estimate the tunability...
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Karhunen-Loeve-based approach to tracking of rapidly fading wireless communication channels
PublikacjaWhen parameters of wireless communication channels vary at a fast rate, simple estimation algorithms, such as weighted least squares (WLS) or least mean squares (LMS) algorithms, cannot estimate them with the accuracy needed to secure the reliable operation of the underlying communication systems. In cases like this, the local basis function (LBF) estimation technique can be used instead, significantly increasing the achievable...
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A Cross-Polarisation Discrimination Analysis of Off-Body Channels in Passenger Ferryboat Environments
PublikacjaThere is a need for investigating radio channels for Body Area Networks considering the depolarisation phenomenon and new types of environments, since these aspects are becoming very important for systems design and deployment. This paper presents an analysis of cross-polarisation discrimination for off-body channels based on a measurement campaign performed in a passenger ferryboat, i.e., where all walls, floors and ceilings are...
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Greening the Innovation Landscape: Leveraging Open Innovation Channels for Sustainable Technology Adoption
PublikacjaOpen innovation offers a great potential for accelerating sustainable technology adoption. This study presents the diverse interaction channels of open innovation and their role in facilitating the development and integration of sustainable solutions. Through an analysis of collaboration mechanisms associated with various open innovation channels in sustainable technology adoption projects, this paper offers a comprehensive framework...
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Comparative molecular dynamics simulations of amphotericin B-cholesterol/ergosterol membrane channels
PublikacjaBadania polegały na przeprowadzeniu porównawczej dynamiki molekularnej dla dwóch typów kanałów amfoterycyny B. Obie symulacje różniły się rodzajem sterolu (cholesterol lub ergosterol). Na podstawie wyników przeprowadzonych prac ustalono jakie elementy strukturalne badanych kanałów mogą być odpowiedzialne za selektywne działanie amfoterycyny B.
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Climate Changes in Southeastern Poland and Food Security
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THE CRISIS OF DIVORCE AND THE NATURE OF THE EXPERIENCED LIFE CHANGES
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Changes in Management During Transformation of Power Industry
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Seasonal changes of mercury speciation in the coastal sediments
PublikacjaPurpose Mercury speciation in sediments is linked to environmental conditions and processes. Domination of particular mercury species depends on its source, displays considerable seasonal behavior, and may be further modified due to oxygen levels, icing conditions, or the input of fresh organic matter. The purpose of this study was to examine the coastal area of the Gulf of Gdańsk in terms of mercury contamination and the influence...
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Changes in the speed of ants as a result of aggressive interactions
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Changes in air tourism to Tunisia in 2009–2018
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Dynamics of changes in Poland in the light of the Industry 4.0
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Potential changes in an electric field and electrolytic corrosion.
PublikacjaSources have been described of corrosively hazardous electric fields and methods of determination of the corrosion hazard to metal structures caused by electrolytic corrosion. Results of potential and impedance investigations in the field of stray currents flowing out of a tram traction and in the presence of a defined electric field of low frequency have been presented. Uncertainties have been indicated relating to the generally...
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A six-ring probe for monitoring conductivity changes
Publikacjastreszczenie: W pracy przedstawiono konstrukcję sondy szściopierścieniowej do monitorowania zmian immitancji. Zdefiniowano czułość sondy i przedstawiono jej rozkład dla przypadków izotropowych i anizotropowych. Teoretyczne symulacje za pomocą metody elementów skończonych zostały zweryfikowane eksperymentalnie, za pomocą specjalnie skonstruowanego zestawu pomiarowego. Zamieszczono przykładowe pomiary in vivo.
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Evaluation of change in planning and control process
PublikacjaSpecyfikacja kryteriów i obszarów system pomiaru i oceny zmiany procesu planowania i sterowania oraz przypisanie kluczowych wskaźników poszczególnym obszarom stanowi podstawowy cel rozdziału. Wybrane wskaźniki umożliwiają ocenę cząstkowych efektów zmian w procesie planowania i sterowania. Dokonanie kompleksowej oceny wymaga budowy modelu oceny efektywności zmian w procesie planowania i sterowania. Jego ogólne założenia zostały...
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Neural Networks and the Evolution of Environmental Change
PublikacjaZmiany środowiskowe na Ziemii są odwieczne i liczą około 4 miliardy lat. Homo sapiens wpłynął na każdy aspekt środowiska ziemskiego w wyniku rozwoju ludzkości na przestrzeni ostatnich milionów lat. Ale nic tak nie wpłynęło na wzrost i szybkość zmian na Ziemi jak ludzka aktywność w ciągu ostatnich dwóch stuleci. Po raz pierwszy zmiany ekosystemów były tak intensywne i zachodziły na tka wielką skalę i z taką szybkością jak nigdy...
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Implementing Change Management Processes in an Enterprise
PublikacjaThis work demonstrates how to implement change management processes in a company, based on the suitability of IBM software.
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Change managmement in production planning and control.
PublikacjaW artykule przedstawiono zależności pomiędzy zmianami w planowaniu i sterowaniu produkcją a zmianami kosztowymi, kulturowymi, organizacyjnymi i technicznymi. Zaprezentowano również klasyfikację zmian w procesie planowania i sterowania produkcją względem czterech podstawowych wyróżników: celu i źródła zmiany, treści zmiany, sposobu przeprowadzenia zmiany i skutków zmiany. Scharakteryzowano ponadto czynniki wewnętrzne i zewnętrzne...
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Factors of change in the planning and control process
PublikacjaZmianom podlegajš wszystkie procesy realizowane w organizacji, również proces planowania i sterowania. W rozdziale przedstawiono klasyfikację czynników zmiany tego procesu i scharakteryzowano poszczególne rodzaje czynników. Przedstawiono również ogólne wytyczne dla procesu identyfikacji i pomiaru czynników zmiany procesu planowania i sterowania. Zaprezentowano też przykładowe mierniki czynników zmiany, zgodne z atrybutami modelu...
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Handel targowy jako faux pas
PublikacjaWspółcześnie występujący handel targowy w przestrzeni publicznej posiada dwoisty charakter, polegający na niejednoznacznej odpowiedzi na pytanie czy powinno się ingerować współczesną architekturę w organizację targowisk czy jarmarków. Może tego rodzaju wydarzenia stanowią pewnego rodzaju nostalgię za tą pierwotną żywiołową formą handlu, której już się nie odnajdzie w galeriach handlowych, hipermarketach, gdzie rzesze ludzi pracują...
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Skills Mismatch in the Context of Technological Change
PublikacjaThis dissertation examines the impact of technological change (TC) on skills and competences and how higher education’s role has changed along the way. Quantitative research was conducted to reveal the perceptions of students and employers in Poland on the relevance of particular skills in an ICT based economy. The results of this research show that there is generally a rather insignificant discrepancy in these perceptions....
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Toward Prediction of Environmental Arctic Change
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The impact of the Architecture on the Climate Change in Anthropocene
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Chapel at St. Joseph's Church in Gdańsk
PublikacjaThe subject of this article is the chapel located in the former Gdańsk Carmelite monastery complex. The results of the architectural research carried out in it in 2014–2015 are presented. As a result, the time and purpose of the building’s construction were established. The original appearance and traces of later alterations were also recognised. The recesses found on the longitudinal walls, of similar dimensions, not reaching...
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Skills mismatch in the context of technological change
PublikacjaThe main purpose of this dissertation is to assess the perception asymmetry of smart skills and formal education in ICT based economy. In other words, the goal of this research is to assess perceptions of smart skills and competences in the context of technological change from the perspectives of employers and students in Poland. Determining the fore-mentioned relationship gives insight into the hypothetical perception asymmetry...
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Paradoxes in the engineering change management process
PublikacjaPurpose: The main purpose of this paper is to conceptualize and operationalize paradoxes that are significant in the engineering change management (ECM) process. The following research question was stated: What are the paradoxes that influence the ECM process, and how can they be measured? Design/methodology/approach: The study is divided into two parts: conceptualization and operationalization. Conceptualization involved a literature...
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<title>SIMCON 3.0 eight channel FPGA-based cavity simulator and controller for VUV free-electron laser</title>
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Image transmission in UAV MIMO UWB-OSTBC system over Rayleigh channel using multiple description coding (MDC)
PublikacjaOrthogonal Space-Time Block Codes (OSTBC) and multiple-input-multiple-output (MIMO) communication system are new techniques with high performance that have many applications in wireless telecommunications. This chapter presents an image transfer technique for the unmanned aerial vehicle (UAV) in a UWB system using a hybrid structure of the MIMO-OSTBC wireless environment in multiple description coding (MDC) deals. MDC technique...
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Activation Energy and Inclination Magnetic Dipole Influences on Carreau Nanofluid Flowing via Cylindrical Channel with an Infinite Shearing Rate
PublikacjaThe infinite shear viscosity model of Carreau fluid characterizes the attitude of fluid flow at a very high/very low shear rate. This model has the capacity for interpretation of fluid at both extreme levels, and an inclined magnetic dipole in fluid mechanics has its valuable applications such as magnetic drug engineering, cold treatments to destroy tumors, drug targeting, bio preservation, cryosurgery, astrophysics, reaction kinetics,...
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Nonadditivity of quantum and classical capacities for entanglement breaking multiple-access channels and the butterfly network
PublikacjaWe analyze quantum network primitives which are entanglement breaking. We show superadditivity of quantum and classical capacity regions for quantum multiple-access channels and the quantum butterfly network. Since the effects are especially visible at high noise they suggest that quantum information effects may be particularly helpful in the case of the networks with occasional high noise rates. The present effects provide a qualitative...
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Heat transfer in plate heat exchanger channels: experimental validation of selected correlation equations
PublikacjaThis study is focused on experimental investigation of selected type of brazed plate heat exchanger. The Wilson approach was applied in order to estimate heat transfer coefficients for the PHEx passages. The main aim of the paper was to experimentally check ability of several correlations published in the literature to predict heat transfer coefficients by comparison experimentally obtained data with appropriate predictions. The...
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Prediction of flow boiling heat transfer coefficient for carbon dioxide in minichannels and conventional channels
PublikacjaIn the paper are presented the results of calculations using authors own model to predict heat transfer coefficient during flow boiling for carbon dioxide. The experimental data from various researches were scrutinised conducted for a full range of quality variation and wide range of mass velocity. The aim of the study was to test the sensitivity of the in-house model. The work shows the importance of taking into account surface...
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Heat transfer in plate heat exchanger channels: experimental validation of selected correlation equations
PublikacjaThis study is focused on experimental investigation of selected type of brazed plate heat exchanger. The Wilson approach was applied in order to estimate heat transfer coefficients for the PHEx passages. The main aim of the paper was to experimentally check ability of several correlations published in the literature to predict heat transfer coefficients by comparison experimentally obtained data with appropriate predictions. The...