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Search results for: SIECI BAN
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Corrigendum: Contrast Tempo of Movement and Its Effect on Power Output and Bar Velocity During Resistance Exercise
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Nationalism as a Manipulation of Collective Imaginaries (Stereotypes) of One’s Own and Strangers in Jan Stanisław Bystroń’s “National Megalomania”
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Bio-fabrication of Zinc Oxide nanoparticles to rescue Mung Bean against Cercospora leaf spot disease
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Rotor broken bar diagnostics in induction motor drive using Wavelet packet transform and ANFIS classification
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Dynamic deformations tests of Ni3Al based intermetallic alloy by using the split Hopkinson pressure bar technique
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<title>Structure and state visualization system for BAC detector electronics in ZEUS experiment of HERA accelerator</title>
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<title>Data quality management system (DQMS) for BAC detector in the ZEUS experiment at the HERA accelerator</title>
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Control of Luminescence by Tuning of Crystal Symmetry and Local Structure in Mn4+ -Activated Narrow Band Fluoride Phosphors
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Narrow Red Emission Band Fluoride Phosphor KNaSiF6:Mn4+ for Warm White Light-Emitting Diodes
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Pressure evolution of luminescence in Sr Ba1−(NbO2)3:Pr3+ (x=1/2 and 1/3)
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Cassava, a 21st Century Staple Crop: How can Nigeria Harness Its Enormous Trade Potentials?
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Highly-Compact Dual-Band Bandpass Waveguide Filter Based on Cross-Shaped Frequency-Dependent Coupling
PublicationThis work reports the design of an original class of highly-compact dual-band bandpass filter based on dual-mode waveguide resonators inter-coupled through a novel type of frequency-dependent coupling (FDC). The devised FDC consists of a cross-shaped metallic structure placed in the broad wall of a rectangular waveguide. This FDC produces two additional poles and three extra transmission zeros (TZs). Specifically, each pole is...
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Zastosowanie głębokiego uczenia do określania warunków LOS/NLOS w ultraszerokopasmowych radiowych sieciach WBAN
PublicationW niniejszym artykule przedstawiono zastosowanie głębokiego uczenia do określania warunków bezpośredniej widoczności LOS/NLOS w ultraszerokopasmowych radiowych sieciach WBAN. Zaproponowano głęboką, jednokierunkową sieć neuronową, której efektywność działania sprawdzono na podstawie danych pomiarowych w rzeczywistym wewnątrzbudynkowym środowisku propagacyjnym. Uzyskane wyniki jednoznacznie udowadniają zasadność stosowania zaproponowanej...
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Rapid Design Centering of Multi-Band Antennas Using Knowledge-Based Inverse Models and Response Features
PublicationAccounting for manufacturing tolerances as well as uncertainties concerning operating conditions and material parameters is one of the important yet often neglected aspects of antenna development. Appropriate quantification of uncertainties allows for estimating the fabrication yield but also to carry out robust design (e.g., yield maximization). For reliability reasons, statistical analysis should be executed at the accuracy level...
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Gronden en afbeeldsels der voornaamste gebouwen, Van alle die Philips Vingboons geordineert heeft
PublicationNota katalogowa zawiera informacje nt autora ksiązki, holenderskiego architekta Philipa Vingeboons (1607-1678) i stylu jego zmysłu architektonicznego w projektowaniu amsterdamskich kamienic.
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Towards Designing an Innovative Industrial Fan: Developing Regression and Neural Models Based on Remote Mass Measurements
PublicationThis article presents the process of the construction and testing a remote, fully autonomous system for measuring the operational parameters of fans. The measurement results obtained made it possible to create and verify mathematical models using linear regression and neural networks. The process was implemented as part of the first stage of an innovative project. The article presents detailed steps of constructing a system to...
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Shaping the City Responding to Climate Change – Concept of Development of the Right Bank of the Vistula River in Toruń, Poland,
PublicationThe problems of cities of the 21st century are caused by anthropogenic oppression of the environment, through the growth of economic activity and continuous urbanisation, and taking away ecologically important open areas and biologically active areas. Increasingly frequent and sudden rains, strong winds, turbulence and rising world water levels are some of the consequences of climate change that have a direct impact on the functioning...
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Can Evaluation Patterns Enable End Users to Evaluate the Quality of an e-learning System? An Exploratory Study.
PublicationThis paper presents the results of an exploratory study whose main aim is to verify if the Pattern-Based (PB) inspection technique enables end users to perform reliable evaluation of e-learning systems in real work-related settings. The study involved 13 Polish and Italian participants, who did not have an HCI background, but used e-learning platforms for didactic and/or administrative purposes. The study revealed that the participants...
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Fast Multi-Objective Optimization of Narrow-Band Antennas Using RSA Models and Design Space Reduction
PublicationComputationally efficient technique for multi-objective design optimization of narrow-band antennas is presented. In our approach, the corrected low-fidelity antenna model (obtained through coarse-discretization EM simulations) is enhanced using frequency scaling and response correction, sampled, and utilized to obtain a fast response surface approximation (RSA) antenna surrogate. The RSA model is constructed in the reduced design space....
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Rapid simulation-driven design of miniaturised dual-band microwave couplers by means of adaptive response scaling
PublicationOne of the major challenges in the design of compact microwave structures is the necessity of simultaneous handling of several objectives and the fact that expensive electromagnetic (EM) analysis is required for their reliable evaluation. Design of multi-band circuits where performance requirements are to be satisfied for several frequencies at the same time is even more difficult. In this work, a computationally efficient design...
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Nowe urządzenia, materiały i technologie w wodociągach i kanalizacji. INSTAL-WOD-KAN 2011
PublicationPrezentacja nowych rozwiązań nateriałowych i urządzeń w wodociągach i kanalizacji. Możliwości, problemy
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A structure and design optimization of novel compact microscrip dual-band rat-race coupler with enhanced bandwidth
PublicationIn the letter, a topology of a novel compact wideband dual-band rat-race coupler has been presented along with its computationally efficient design optimization procedure. Reduction of the circuit size has been achieved by meandering transmission lines of the conventional circuit. At the same time, the number of independent geometry parameters has been increased so as to secure sufficient flexibility of the circuit, necessary in...
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Estimation of time-frequency complex phase-based speech attributes using narrow band filter banks
PublicationIn this paper, we present nonlinear estimators of nonstationary and multicomponent signal attributes (parameters, properties) which are instantaneous frequency, spectral (or group) delay, and chirp-rate (also known as instantaneous frequency slope). We estimate all of these distributions in the time-frequency domain using both finite and infinite impulse response (FIR and IIR) narrow band filers for speech analysis. Then, we present...
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Effectiveness of bluetooth scatternet coexisting with ieee 802.11b
PublicationArtykuł dotyka problematyki wzajemnych interferencji sieci Bluetooth i IEEE 802.11b. W szczególności analizowano wpływ transmisji 802.11b na pracę pojedynczej pikosieci w danym scatternecie BT.
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Wielopoziomowy przekształtnik trakcyjny SiC z izolacją od sieci 3kV DC realizowaną za pomocą transformatorów 30kHz do napędów EZT
PublicationW referacie przedstawiono wielopoziomowy izolowany kaskadowy przekształtnik DC-AC z tranzystorami SiC MOSFET 1,2kV, przeznaczony do napędów elektrycznych zespołów trakcyjnych (EZT). Zaproponowana konstrukcja przekształtnika, przeznaczonego do pracy przy zasilaniu z sieci trakcyjnej 3kV DC, spełnia założenia energoelektronicznego transformatora trakcyjnego (z ang. Power Electronic Traction Transformer). Budowa modułowa z niskonapięciowych...
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Usługi publiczne jako czynnik miastotwórczy i wyznacznik rangi miasta w sieci osadniczej na przykładzie małych miast Polski północnej
PublicationMałe miasta, podobnie jak większe, pełnią różne funkcje egzogeniczne wyspecjalizowane, a także funkcje standardowe, zwane też centralnymi (Domański 1972), polegające na obsłudze bliskiego, a nieraz też dalszego otoczenia. Są z tego powodu koncentracjami miejsc pracy dla mieszkańców swoich i otoczenia. Jedną z funkcji miastotwórczych są usługi. Ich udział w strukturze zatrudnienia, jak wykazywał Fourastier (Goryński 1966) rośnie...
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The influence of oscillatory low pressure on bacteria number in groundwater supplied to distribution system
PublicationPrzedstawiono wyniki wstępnych badań laboratoryjnych nad wpływem stałego podwyższonego ciśnienia oraz częstych i gwałtownych jego zmian na liczbę bakterii w wodzie podziemnej. Określono zmiany liczby bakterii heterotroficznych (na agarze R2A) oraz całkowitej liczby bakterii (DAPI) w wodzie podziemnej (w temperaturze 20 st.C w okresie 96 h) poddawanej ciągłemu ciśnieniu 0,6 MPa i porównano z uzyskanymi w wodzie poddanej gwałtownym...
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QoS provisioning in a single-cell ad hoc WLAN via queuing and stochastic games
PublicationPokazano, że stosowanie agresywnych strategii dostępu do medium transmisyjnego może stanowić dla stacji sieci gwarancję równej szansy uzyskania pożądanej przepływności oraz zachowania jej na cały czas transferu danych. Przeprowadzono analizę gier typu stochastycznego pod kątem istnienia równowagi strategicznej przy założeniu probabilistycznych strategii dostępu.
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Niezawodność transmisji danych protokołu UDP w elektroenergetycznychsystemach teletransmisyjnych współpracujących z siecią Internet
PublicationW artykule przedstawiono istotę niezawodności transmisji danych przesyłanych - na podstawie zorientowanego bezpołączeniowo protokołu komunikacyjnego UDP - w elektroenergetycznych systemach teletransmisyjnych współpracujących z siecią Internet. Problematyka ta dotyczy szczególnie niewielkich (często bezobsługowych) obiektów elektroenergetycznych, w przypadku których proces monitorowania może być realizowany za pośrednictwem powszechnie...
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Predicting cutting power for band sawing process of pine and beech wood dried with the use of four different methods
PublicationWood drying is an important stage in the woodworking process. After drying, wood is subject to a re-sawing process, for which a high quality surface, low material loss, and high efficiency are often required. In this paper, forecasted values were presented of cutting power for the re-sawing process of pine and beech wood that were dried with four different methods. Forecasting of cutting power for an industrial band saw machine...
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Expedited Feature-Based Quasi-Global Optimization of Multi-Band Antenna Input Characteristics with Jacobian Variability Tracking
PublicationDesign of modern antennas relies—for reliability reasons—on full-wave electromagnetic simulation tools. In addition, increasingly stringent specifications pertaining to electrical and field performance, growing complexity of antenna topologies, along with the necessity for handling multiple objectives, make numerical optimization of antenna geometry parameters a highly recommended design procedure. Conventional algorithms, particularly...
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Reduced-cost surrogate modeling of input characteristics and design optimization of dual-band antennas using response features
PublicationIn this article, a procedure for low-cost surrogate modeling of input characteristics of dual-band antennas has been discussed. The number of training data required for construction of an accurate model has been reduced by representing the antenna reflection response to the level of suitably defined feature points. The points are allocated to capture the critical features of the reflection characteristic, such as the frequencies...
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Evaluation of bearing and journal damage in MAN 9L40-54 engines installed on M/V STENA SCANDINAVICA ferry
PublicationThe following report was requested by Remontowa Shiprepair Yard (RSY) S.A. in Gdansk ´ (contract no. 4/2018/EX/U, dated 13.02.2018) and prepared based on the materials received from RSY, two on-board inspections and the participation of the contractors in three conferences with RSY representativesi. The goal of the analysis performed by the experts of Gdansk University of Technology was ´ to determine the character of the bearing...
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A Wideband Corrugated Ridged Horn Antenna with Enhanced Gain and Stable Phase Center for X- and Ku-Band Applications
PublicationIn this letter, a structure and design procedure of a novel double-flared conical horn antenna with an improved gain and a stable phase center is presented. The antenna incorporates a hybrid ridged and corrugated structure. A double-ridged section is responsible for ensuring a wideband operation, whereas the corrugated section supports the hybrid mode. The antenna impedance bandwidth (VSWR < 2) is 6 GHz to 20 GHz. Excellent performance...
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Can Post-Activation Performance Enhancement (PAPE) Improve Resistance Training Volume during the Bench Press Exercise?
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A system for Direction-Of-Arrival estimation in ISM 2.4 GHz frequency band based on ESPAR antenna and SDR technology
PublicationDetermination of the direction of the signal arrival (DOA) finds many applications in various areas of science and industry. Knowledge of DOA is used, among others to determine the position of a satellite with a low Earth orbit (LEO), localization of people and things as well as in research of wireless communication systems, for instance the determination of the number of...
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Embedded device for indoor positioning of mobile terminals in ISM 2.4 GHz frequency band integrated with ESPAR antenna
PublicationIn the era of multifunctional mobile phones, wireless positioning is one of the most important branches of telecommunications development. This functionality is possible thanks to global positioning systems such as GPS, whose services are available to every average user. Global systems, however, suffer from their low accuracy in confined environments such as forests and building interiors. A popular...
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Global EM-Driven Optimization of Multi-Band Antennas Using Knowledge-Based Inverse Response-Feature Surrogates
PublicationElectromagnetic simulation tools have been playing an increasing role in the design of contemporary antenna structures. The employment of electromagnetic analysis ensures reliability of evaluating antenna characteristics but also incurs considerable computational expenses whenever massive simulations are involved (e.g., parametric optimization, uncertainty quantification). This high cost is the most serious bottleneck of simulation-driven...
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Does the low optical band gap of yellow Bi3YO6 guarantee the photocatalytical activity under visible light illumination?
PublicationBi3YO6, which is known as an ionic conductor, was tested here as an electrode and photoanode in contact with aqueous electrolytes. Bi3YO6 was deposited onto the Pt substrate and the such prepared electrode was polarized in various aqueous electrolytes. The optical energy band gap of the material equal to 1.89 eV was determined using the Kubelka-Munk function resulting from the UV-Vis spectrum (allowed indirect transition) and also...
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Bazy wiedzy w wieloagentowym systemie do oceny technologii informatycznych - podział wiedzy i baz wiedzy
PublicationArtykuł prezentuje bazy wiedzy systemu agentowego do oceny technologii informatycznych. W części pierwszej przedstawiono podział wiedzy i baz wiedzy uwzględniający wiedzę dotyczącą samych technologii jak i kryteriów ich ocen oraz środowisk zastosowania technologii informatycznych. W części drugiej omówiono struktury poszczególnych baz wskazując jednocześnie na zachodzące (w nich i między nimi) relacje. Artykuł uwzględnia także...
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Revisional bariatric surgery after adjustable gastric band: a multicenter Polish Revision Obesity Surgery Study (PROSS)
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Theophylline Therapy for Cheyne-Stokes Respiration During Sleep in a 41-Year-Old Man With Refractory Arterial Hypertension
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Bacteria Residing at Root Canals Can Induce Cell Proliferation and Alter the Mechanical Properties of Gingival and Cancer Cells
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Application of Shape Memory Alloys in Retrofitting of Masonry and Heritage Structures Based on Their Vulnerability Revealed in the Bam 2003 Earthquake
PublicationFor decades, one of the most critical considerations of civil engineers has been the construction of structures that can sufficiently resist earthquakes. However, in many parts of the globe, ancient and contemporary buildings were constructed without regard for engineering; thus, there is a rising necessity to adapt existing structures to avoid accidents and preserve historical artefacts. There are various techniques for retrofitting...
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Can local infiltration analgesia supplemented with tranexamic acid reduce blood loss during total knee arthroplasty?
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Newly marketed seed oils. What we can learn from the current status of authentication of edible oils
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Deep Eutectic Solvent Stir Bar Sorptive Extraction: A Rapid Microextraction Technique for the Determination of Vitamin D3 by Spectrophotometry
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Oxidation, Glycation, and Carbamylation of Salivary Biomolecules in Healthy Children, Adults, and the Elderly: Can Saliva Be Used in the Assessment of Aging?
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<title>Control and monitoring of data acquisition and trigger system (TRIDAQ) for backing calorimeter (BAC) of the ZEUS experiment</title>
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Crystal structure and proton conductivity in highly oxygen-deficient Ba1−xLax(In,Zr,Sn)O3−δ perovskites
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