Wyszukiwarka
Filtry
wszystkich: 2537
-
Katalog
- Publikacje 2085 wyników po odfiltrowaniu
- Czasopisma 55 wyników po odfiltrowaniu
- Konferencje 1 wyników po odfiltrowaniu
- Wydawnictwa 4 wyników po odfiltrowaniu
- Osoby 117 wyników po odfiltrowaniu
- Wynalazki 3 wyników po odfiltrowaniu
- Projekty 8 wyników po odfiltrowaniu
- Laboratoria 1 wyników po odfiltrowaniu
- Zespoły Badawcze 4 wyników po odfiltrowaniu
- Aparatura Badawcza 1 wyników po odfiltrowaniu
- Kursy Online 107 wyników po odfiltrowaniu
- Wydarzenia 19 wyników po odfiltrowaniu
- Dane Badawcze 132 wyników po odfiltrowaniu
wyświetlamy 1000 najlepszych wyników Pomoc
Wyniki wyszukiwania dla: lean logistics
-
Novel Nonlinear High Order Technologies for Damage Diagnosis of Complex Assets
PublikacjaFor the first time worldwide, innovative techniques, generic non-linear higher-order unnormalized cross-correlations of spectral moduli, for the diagnosis of complex assets, are proposed. The normalization of the proposed techniques is based on the absolute central moments, that have been proposed and widely investigated in mathematical works. The existing higher-order, crosscovariances of complex spectral components are not sufficiently...
-
Novel Fault Identification for Electromechanical Systems via Spectral Technique and Electrical Data Processing
PublikacjaIt is proposed, developed, investigated, and validated by experiments and modelling for the first time in worldwide terms new data processing technologies, higher order spectral multiple correlation technologies for fault identification for electromechanical systems via electrical data processing. Investigation of the higher order spectral triple correlation technology via modelling has shown that the proposed data processing technology...
-
User-assisted methodology targeted for building structure interpretable QSPR models for boosting CO2 capture with ionic liquids
PublikacjaTask-specific ionic liquid (IL) is an emerging class of compounds that may be environmentally friendly. Properly selected, these compounds may be green alternative to amine solutions and can replace them in post-combustion carbon dioxide (CO2) capture processes on an industrial scale. However, owing to the vast diversity of ions and their possible combinations, laboratory research is time consuming and expensive. Therefore, computational...
-
Approval of an Arrangement in the Restructuring Proceedings and the Financial Condition of Companies Listed on the Stock Exchanges in Warsaw. Is There Any Relationship?
PublikacjaThis paper attempts to identify the financial indicators differentiating companies that are insolvent or at risk of insolvency and have successfully entered into an arrangement with their creditors from those that have not. In addition, a two-factor model for predicting the odds of an arrangement has been proposed. The research was conducted using a population of companies listed on stock exchanges in Warsaw that initiated restructuring...
-
Improving depth maps of plants by using a set of five cameras
PublikacjaObtaining high-quality depth maps and disparity maps with the use of a stereo camera is a challenging task for some kinds of objects. The quality of these maps can be improved by taking advantage of a larger number of cameras. The research on the usage of a set of five cameras to obtain disparity maps is presented. The set consists of a central camera and four side cameras. An algorithm for making disparity maps called multiple...
-
Krzysztof Goczyła prof. dr hab. inż.
OsobyKrzysztof Goczyła, profesor zwyczajny Politechniki Gdańskiej, informatyk, specjalista z inżynierii oprogramowania, inżynierii wiedzy i baz danych. Ukończył studia wyższe na Wydziale Elektroniki Politechniki Gdańskiej w 1976 r. jako magister inżynier elektronik w specjalności automatyka. Na Politechnice Gdańskiej pracuje od 1976. Na Wydziale Elektroniki PG w 1982 r. uzyskał doktorat z informatyki, a w 1999 r. habilitację. W 2012...
-
Wojciech Sadowski prof. dr hab. inż.
OsobyWojciech Sadowski (ur. 2.02.1954 r. w Ostaszewie), naukowiec, polski inżynier, profesor Politechniki Gdańskiej, specjalista z fizyki ciała stałego, nanotechnologii, optoelektroniki. Studia wyższe ukończył w 1979 r. w Leningradzkim Instytucie Elektrotechnicznym w Leningradzie w specjalności dielektryki i półprzewodniki, uzyskując tytuł zawodowy magistra inżyniera elektronika. Od 1979 r. pracuje na Politechnice Gdańskiej, pełniąc...
-
Marek Rocki dr hab
OsobyBorned in Warsaw in 1953, graduated in 1970 in econometrics at Main School of Planning and Statistics. Since 1981 employed in the Main School of Planning and Statistics later Warsaw School of Economics (WSE) in the Unit of Econometry in Collegium of Economic Analysis. Was in the Warsaw School of Economics elected for Vice-Rector in 1990 and 1993, for Dean of Graduate Studies in 1996, for Rector in 1999 and 2002, for Dean of Collegium...
-
Long-term hindcast simulation of sea level in the Baltic Sea
Dane BadawczeThe dataset contains the results of numerical modelling of sea level fluctuations over a period of 50 years (1958-2007) in the Baltic Sea. A long-term hindcast simulation was performed using a three-dimensional hydrodynamic model PM3D (Kowalewski and Kowalewska-Kalkowska, 2017), a new version of the M3D model (Kowalewski, 1997). The hydrodynamic model...
-
Improving the production planning and control process
PublikacjaFocusing the activities of a production business on the strategy based on quality entails orientation on meeting the expectations of the customers with respect to the product itself, and the terms of its delivery. The article notes the role of the production planning and control process in improving the quality of the business offer. It identifies the objectives set for the process from the perspective of meeting the expectations...
-
GDP growth in Iran
Dane BadawczeThe economy of the Islamic Republic of Iran is one of the fastest growing in the Middle East. Iran should not only be associated with crude oil industry but also other areas of the economy. The sanctions that hindered oil exports from Iran meant that the authorities had to take measures to increase exports of other products. There was an increase in...
-
The influence of SVC on the progress of voltage collapse
PublikacjaThe article presents the simulation concerning the cooperation of SVC circuit with a generative set in time, when of power system reaches low values which may lead to the fall-out of generator from the synchronous operation.
-
Polaron hopping conduction in manganese borosilicate glass
PublikacjaA study on a novel material - manganese borosilicate glass without alkali metals, was reported. It was found that the obtained samples containing high amount of manganese oxide (60MnO–xSiO2–(40 − x)B2O3, x = 5, 10, 15, 20 and 30 mol%) were amorphous and homogeneous. XPS measurements showed that most of manganese ions are at oxidation level of Mn2 + ions and the mean oxidation level slightly moves toward higher value, with increasing...
-
Complex Monitoring of the Coastal Cliffs on the Example of Cliff in Jastrzebia Gora, Poland
PublikacjaThe cliff coasts, which are in total about 100 km long, are especially vulnerable to abrasion. The mean regression of the studied object which is the seacliff in Jastrzebia Gora depends on time. For example, from 1875 to 1937 the cliff regress 90 m in mean pace of 1.4 meter a year. Besides of natural factors causing the degradation, there is also an anthropogenic activity, which speeds up the abrasion process. Based on these informations,...
-
Doskonalenie strumienia wartości
PublikacjaKsiążka ta ma na celu praktyczne ujęcie problemu optymalizacji przedsiębiorstwa opartej na koncepcji Lean (z ang. Lean – szczupły) i jej narzędziu Mapowania Strumienia Wartości. Prezentowane podejście do Mapowania Strumienia Wartości jest spójne z innymi pozycjami literaturowymi w tym zakresie. Jednak moje dziesięcioletnie doświadczenie zdobywane w toku kilkudziesięciu projektów wskazało mi dodatkowe kierunki analiz, które warto...
-
Enantiopure C1-Cyclotriveratrylene with a Reversed Spatial Arrangement of the Substituents
Publikacja -
X-Ray Computer Tomography Study of Degradation of the Zircaloy-2 Tubes Oxidized at High Temperatures
PublikacjaThe investigations of high-temperature oxidation of zirconium alloys, applied for fuel pellets in nuclear power plants, are usually limited to oxidation kinetics, phase transformations and microstructural characterization. The purpose of this research was to characterize the degradation phenomena occurring within oxide layer and at the interface oxide/metal, on internal and external Zircaloy-2 tube...
-
Chosen Analysis Results Of The Prototype Multicell Piezoelectric Motor
PublikacjaThis paper presents the design, modeling and tests of the prototype multicell piezoelectric motor (MPM). A new concept of the electromechanical structure of the considered prototype is based on three rotating-mode actuators. The electromechanical structure of each actuator has been considered as an independent one - referred to as a “single cell” (single actuator). Combined three resonant actuators generate three traveling waves...
-
Powierzchniowa obróbka laserowa stopu Al-Si w warunkach kriogenicznych
PublikacjaPrzedstawiono sposób krystalizacji metali w warunkach wolnego i ultra szybkiego chłodzenia. Wykorzystanie wiązki lasera umożliwia szybkie nadtopienie określonej warstwy materiału metalicznego, a intensywne chłodzenie sprzyja tworzeniu struktur drobnokrystalicznych, quasi krystalicznych lub amorficznych. W tym aspekcie opracowano obróbkę powierzchniową stopu Al-Si, która w znacznym zakresie zmodyfikuje właściwości użytkowe wymienionego...
-
Morphology and corrosion characteristics of laser surface remelted Al-Sialloy at cryogenic conditions
PublikacjaPrzedstawiono koncepcję obróbki laserowej stopu Al-Si w warunkach kriogenicznych. Określono jej wpływ na lokalny skład chemiczny oraz mikrostrukturę i właściwości korozyjne wymienionego stopu. Stwierdzono znaczącą poprawę właściwości korozyjnych w 0,01 M H2SO4.
-
The bismuth atom neighbourhood in bismuth-silicate glasses from X-ray absorption experiment
PublikacjaPraca zawiera wyniki strukturalnej analizy EXAFS lokalnego otoczenia atomów bizmutu w krystalicznym tlenku bizmutu (odmiana alfa) i w szklach bizmutowo-krzemianowych o składzie xBi2O3 (1-x)SiO2,x=0.3, 0.4, 0.5, 0.6. Analizę XA- FS realizowano w oparciu o metodę GNXAS. Otrzymane wyniki porównano z danymi literaturowym.
-
Effect of laser treatment on the wear and corrosion resistance of aluminiumalloy used for pistons
PublikacjaPrzedstawiono wpływ powierzchniowego laserowego przetapiania w warunkach kriogenicznych na skład chemiczny, mikrostrukturę, mikrotwardość oraz zużycie ścierne i odporność korozyjną stopu AlSi13Mg1CuNi stosowanego na tłoki silników spalinowych. Uzyskano zwiększenie odporności na ścieranie i korozję stopu AlSi13Mg1CuNi.
-
Corrosion characteristics of the AL-Si alloy after laser treatment at cryogenic conditions
PublikacjaOmówiono wpływ laserowego powierzchniowego przetapiania stopu Al-Si w warunkach kriogenicznych na jego mikrostrukturę i właściwości użytkowe. W wyniku badań korozyjnych stwierdzono zwiększenie odporności na korozję stopu Al-Siw 0,01 M roztworze H2SO4.
-
Dion desorption from condensed CD4, C2D2, C2D4, C2D6 ans C2D8 moleculesinduced by electron impact. Radiation.
PublikacjaZmierzono wydajność desorpcji jonu D-z deuteryzowanych węglowodorów. Desorpcja jest stymulowana wiązką elektronów w zakresie energii od 0 do 20 eV.
-
Accurate modeling of layout parasitic to forecast EMI emitted from a DC-DC converter.
PublikacjaThis paper illustrates how to account for all parasitic due to the layout of a power converter (inductive and capacitive), in order to forecast electromagnetic interferences (EMI). The method is generic, and is validated here in the simple example of a DC-DC converter, realized on different technologies: insulated metal substrate (IMS), printed circuit board (PCB). In addition, several layouts aspects will be investigated. Conclusions...
-
Intrinsic and extrinsic factors in anion electron -stimulated desorption: D- from deuterated hydrocarbons condensed on Kr and water ice films.
PublikacjaPrzedstawiono wynik desorpcji anionów D indukowanej zderzeniami elektronów ze skondensowanymi drobinami CD4, C2D6, C3D8,C2D4 i C2D2. Cienkie warstwy badanych drobin skondensowano na powierzchniach innych warstw atomowych i molekularnych (krypton porowaty i nieporowaty amorficzny lód) zestalony na powierzchni platyny. Zaobserwowano znaczące zaburzenia desorpcji anionów D poprzez obecność innych kondensatów. Zaproponowano oraz przedyskutowano...
-
Better understanding EMI generation of power converters
PublikacjaPrzedstawiono metodę przewidywania poziomu zaburzeń w układzie podwyższającym napięcie w oparciu o metodę filtracji Wienera. Pozwoliło to na określenie odpowiedzi impulsowej pomiędzy przyczyną zaburzenia (zmianą napięcia na elementach półprzewdonikowych) a zaburzeniem. Metodę zwerifikowano przy użyciu danych z symulacji oraz pomiarów w rzeczywistym obiekcie
-
Design and fabrication of nanometer measurement platform for better understanding of silicon mechanical properties
Publikacja -
The Wiener filter applied to EMI decomposition
PublikacjaArtykuł przestawia zastosowanie metody filtracji Wienera do dekompozycji zaburzeń elektromagnetycznych z różnych źródeł. Zaburzenia generowane w trójfazowym rezonansowym falowniku napięcia typy PQRDCLI oraz w przekształtniku napięcia stałego zasilającego obwód sterowania falownika zostały zmierzone z zastosowaniem sieci sztucznej (LISN). W oparciu o transmitancje częstotliwościowe pomiędzy źródłami zaburzeń i zaburzeniami zmierzonymi...
-
A study on application of Smoothed Particle Hydrodynamics to multi-phase flows
Publikacja -
WYBRANE WYNIKI BADAŃ PROTOTYPU WIELOKOMÓRKOWEGO SILNIKA PIEZOELEKTRYCZNEGO
PublikacjaW artykule przedstawiono wybrane wyniki badań prototypu nowego wielokomórkowego silnika piezoelektrycznego (WSP). Badany silnik jest przeznaczony do zastosowania w układzie sterowania położeniem fotela w pojazdach samochodowych. Koncepcja struktury elektromechanicznej rozważanego WSP bazuje na trzech rezonansowych aktuatorach piezoelektrycznych o modulowanym ruchu obrotowym. Struktura elektromechaniczna każdego z trzech aktuatorów...
-
Design and modeling of the piezoelectric motor based on three resonance actuators
PublikacjaThis paper describes a piezoelectric motor which combines advantages from two existing piezoelectric motors topologies. The research work presents the design, simulations and measurements of the piezoelectric motor with three rotation-mode actuators. The aim of the project was to obtain the high speed piezoelectric motor. Other advantages of this conception are blocking torque, short response times, the ability to work in a hostile...
-
Impact of dielectric deterioration on the conducted EMI emissions in the DC-DC boost converter
PublikacjaW artykule przedstawiono wpływ starzenia kondensatorów elektrolitycznych na poziom zaburzeń elektromagnetycznych generowanych przez układ podwyższający napięcie w oparciu o metody symulacyjne oraz cyfrowe przetwarzanie sygnału (filtracje Wienera). Wyniki przedstawiono w formie widm zaburzeń generowanych przez układ oraz transmitancji pomiędzy źródłem zaburzeń a zaburzeniami. (Wpływ starzenia się dielektryków na poziom zaburzeń...
-
Use of Neural Networks in Diagnostics of Rolling-Element Bearing of the Induction Motor
PublikacjaBearing defect is statistically the most frequent cause of an induction motor fault. The research described in the paper utilized the phenomenon of the current change in the induction motor with bearing defect. Methods based on the analysis of the supplying current are particularly useful when it is impossible to install diagnostic devices directly on the motor. The presented method of rolling-element bearing diagnostics used indirect...
-
Analytical Modelling of the Multicell Piezoelectric Motor Based on Three Resonance Actuators
PublikacjaThis paper presents analytical model of the multicell piezoelectric motor. The results, obtained in the field of piezoelectric motors, have pointed out that these motors have potentially high possibilities in the future of special applications. The studied multicell piezoelectric motor have a stator using three rotating mode actuators. A theoretical analysis of operating principle of the rotating mode motor has been described....
-
Anisotropic stochastic dispersion model for large-eddy simulations of particle-laden turbulent flows
Publikacja -
Effect of double thermal and electrochemical oxidation on titanium alloys for medical applications
PublikacjaThe research focuses on the development and characterization of innovative thin hybrid oxide coatings obtained in subsequent processes of thermal (TO) and electrochemical (EO) oxidation. Four different surface modifications were investigated and the microstructure was determined, the mechanical, chemical and biological properties of the Ti-13Nb-13Zr alloy were assessed using scanning electron microscopy, X-ray dispersion analysis,...
-
Global Optimization for Recovery of Clipped Signals Corrupted With Poisson-Gaussian Noise
PublikacjaWe study a variational formulation for reconstructing nonlinearly distorted signals corrupted with a Poisson-Gaussian noise. In this situation, the data fidelity term consists of a sum of a weighted least squares term and a logarithmic one. Both of them are precomposed by a nonlinearity, modelling a clipping effect, which is assumed to be rational. A regularization term, being a piecewise rational approximation of the ℓ0 function...
-
Customization of UWB 3D-RTLS Based on the New Uncertainty Model of the AoA Ranging Technique
PublikacjaThe increased potential and effectiveness of Real-time Locating Systems (RTLSs) substantially influence their application spectrum. They are widely used, inter alia, in the industrial sector, healthcare, home care, and in logistic and security applications. The research aims to develop an analytical method to customize UWB-based RTLS, in order to improve their localization performance in terms of accuracy and precision. The analytical...
-
News that Moves the Market: DSEX-News Dataset for Forecasting DSE Using BERT
PublikacjaStock market is a complex and dynamic industry that has always presented challenges for stakeholders and investors due to its unpredictable nature. This unpredictability motivates the need for more accurate prediction models. Traditional prediction models have limitations in handling the dynamic nature of the stock market. Additionally, previous methods have used less relevant data, leading to suboptimal performance. This study...
-
Psychological and physical components in forming preferences on urban greenery management – The case of trees
PublikacjaPublic opinion is increasingly important in managing urban greenery. In this regard, this study demonstrates the importance of sociological (environmental worldviews), psychological (place attachment, perceived benefits of trees), and physical factors (type of building people live in, and urban greenery) in forming residents’ opinions on whether the municipality or landowners should decide about tree removal on private land. Logistic...
-
Factors affecting the conclusion of an arrangement in restructuring proceedings: evidence from Poland
PublikacjaThe EU Restructuring Directive (2019/1023) requires Member States to provide a preventive restructuring framework for financially distressed entities that remain viable or are likely to readily restore economic viability. The first step to a successful restructuring is the approval of an arrangement between the debtor and creditors. The main research objective of the article is to identify factors affecting the conclusion of an...
-
Driving forces of informal employment: An empirical study based on Polish enterprise data
PublikacjaObjective: The article aims to indicate the determinants of informal employment in registered enterprises using company-level evidence from Poland. Research Design & Methods: The survey conducted among Polish small and medium-sized (SME) enterprises in 2018 was used to find the driving forces of informal employment in Poland. The adequate sample comprised 952 representative surveys derived from the computer-assisted telephone...
-
Detecting type of hearing loss with different AI classification methods: a performance review
PublikacjaHearing is one of the most crucial senses for all humans. It allows people to hear and connect with the environment, the people they can meet and the knowledge they need to live their lives to the fullest. Hearing loss can have a detrimental impact on a person's quality of life in a variety of ways, ranging from fewer educational and job opportunities due to impaired communication to social withdrawal in severe situations. Early...
-
FACTORS AFFECTING THE CONCLUSION OF AN ARRANGEMENT IN RESTRUCTURING PROCEEDINGS: EVIDENCE FROM POLAND
PublikacjaThe EU Restructuring Directive (2019/1023) requires Member States to provide a preventive restructuring framework for financially distressed entities that remain viable or are likely to readily restore economic viability. The first step to a successful restructuring is the approval of an arrangement between the debtor and creditors. The main research objective of the article is to identify factors affecting the conclusion of an...
-
Price bubbles and Co-bubbles in the green economy market
PublikacjaIn light of growing concerns about climate change and environmental issues, investor interest has surged in the new green economy market. However, the existing literature is limited regarding potential price bubble and co-bubble within this new domain. This study examines price bubble and co-bubble in the new green economy market, covering 31 indexes classified into three groups: the green economy market and its components, geographical...
-
Dependent self-employed individuals: are they different from paid employees?
PublikacjaThis study focuses on dependent self-employment, which covers a situation where a person works for the same employer as a typical worker while on a self-employment contractual basis, i.e., without a traditional employment contract and without certain rights granted to "regular" employees. The research exploits the individual-level dataset of 35 European countries extracted from the 2017 edition of the European Labour Force Survey...
-
Differential expression profile between amygdala and blood during chronic lithium treatment in a rat model of depression – a pilot study
PublikacjaLithium is a mood stabilizer widely used in the pharmacotherapy of bipolar disorder and treatment‑resistant depression. Taking into account dysregulated inflammatory activity in depression and the immunomodulatory role of lithium, we hypothesized that genes associated with inflammatory responses may be potential biomarkers of lithium action. We aimed to compare gene expression changes between the brain and the periphery after...
-
Age, frequency of volunteering, and Present-Hedonistic time perspective predict donating items to people in need, but not money to combat COVID-19 during lock-down
PublikacjaRestrictions due to COVID-19 necessitated staying at home, but in some cases, encouraged charitable behavior, e.g., donating items to people in need (e.g., clothes, food), or money to support combatting COVID-19. Drawing on the previous findings regarding helping during disastrous situations and roles of time perspective in helping behaviors, the study tested the predictive value of age, gender, previous volunteering, altruistic...
-
Evaluation of Ambient Air Odour Quality in Vicinity of Municipal Landfill Using Electronic Nose Technique
PublikacjaThe paper presents the results of investigation on ambient air quality evaluation with respect to concentration of odorants in a vicinity of municipal landfill. The investigation was carried out with a prototype of electronic nose and a team of panelists utilizing the Nasal Ranger field olfactometers. The prototype was equipped with a set of six semiconductor sensors by FIGARO Co. and one PID-type sensor. Performed measurements...