Wyszukiwarka
Filtry
wszystkich: 767
wybranych: 460
-
Katalog
- Publikacje 460 wyników po odfiltrowaniu
- Czasopisma 24 wyników po odfiltrowaniu
- Konferencje 2 wyników po odfiltrowaniu
- Wydawnictwa 1 wyników po odfiltrowaniu
- Osoby 33 wyników po odfiltrowaniu
- Projekty 3 wyników po odfiltrowaniu
- Kursy Online 3 wyników po odfiltrowaniu
- Dane Badawcze 241 wyników po odfiltrowaniu
Filtry wybranego katalogu
Wyniki wyszukiwania dla: RUSSEL ACKOFF
-
Spatial Visualization Based on Geodata Fusion Using an Autonomous Unmanned Vessel
PublikacjaThe visualization of riverbeds and surface facilities on the banks is crucial for systems that analyze conditions, safety, and changes in this environment. Hence, in this paper, we propose collecting, and processing data from a variety of sensors—sonar, LiDAR, multibeam echosounder (MBES), and camera—to create a visualization for further analysis. For this purpose, we took measurements from sensors installed on an autonomous, unmanned...
-
Buckling and shape control of prestressable trusses using optimum number of actuators
PublikacjaThis paper describes a method to control the nodal displacement of prestressable truss structures within the desired domains. At the same time, the stress in all members is unleashed to take any value between the allowable tensile stress and critical buckling stress. The shape and stresses are controlled by actuating the most active members. The technique considers the members’ initial crookedness, residual stresses, and slenderness...
-
Analysis of the Environmental Impact of the Hull Construction of a Small Vessel Based on LCA
PublikacjaIn recent years, issues related to the impact of human activity on the natural environment have become pressing, and the challenge of global warming necessitates immediate action. To support environmental protection efforts, it has become imperative to adopt a broader perspective when evaluating various products and systems. A valuable tool for such assessments is a life cycle assessment (LCA), which enables a comprehensive analysis...
-
ENERGY EFFICIENT AND ENVIRONMENTALLY FRIENDLY HYBRID CONVERSION OF INLAND PASSENGER VESSEL
PublikacjaThe development and growing availability of modern technologies, along with more and more severe environment protection standards which frequently take a form of legal regulations, are the reason why attempts are made to find a quiet and economical propulsion system not only for newly built watercraft units, but also for modernised ones. Correct selection of the propulsion and supply system for a given vessel affects significantly...
-
Static Shape and Stress Control of Trusses with Optimum Time, Actuators and Actuation
PublikacjaTraditional shape and stress control of structures use many actuators and require enormous time to find reasonable solutions that need designers to input specific target displacement and stress. This study employs a linear technique to static shape and stress control of pin-jointed assemblies as a theoretical advancement to prior works and provides a comparative analysis against previously established works. The study evaluates...
-
DETERMINATION OF SEAKEEPING PERFORMANCE FOR A CASE STUDY VESSEL BY THE STRIP THEORY METHOD
PublikacjaThe increase of seakeeping performance is of particular importance for car and passenger ferries, service ships in the gas and oil extraction industry and offshore wind power farm industry, as well as for special purpose ships (including military applications). In the water areas of the Baltic Sea, North Sea, and Mediterranean Sea, which are characterised by a short and steep wave, the hull shape has a substantial impact on the...
-
Application of an Autonomous/Unmanned Survey Vessel (ASV/USV) in Bathymetric Measurements
Publikacja -
Effect of Washing on the Quality of Surimi-Like Preparation Obtained from Soft Tissue of Freshwater Mussel Sinanodonta woodiana (Lea, 1834)
Publikacja -
Pregnancy and Childbirth Fear of Women from Poland, Greece, Turkey, Belarus, and Russia
Publikacja -
Sailing Vessel Routing Considering Safety Zone and Penalty Time for Altering Course
PublikacjaIn this paper we introduce new model for simulation sea vessel routing. Besides a vessel types (polar diagram) and weather forecast, travel security and the number of maneuvers are considered. Based on these data both the minimal travelling costs and the minimal processing time are found for different vessels and different routes. To test our model the applications SailingAssistance wad improved. The obtained results shows that...
-
Urban Railway within the Linear Urban Structure: the Case Study of Perm, Russia
PublikacjaThe paper analyses the ten years’ experience of Perm to develop its system of the urban train trying to reveal the reasons for its modest performance and decline in the passenger traffic. The authors show how the Urban Train fits within the city urban structure and eval uate the potential of the Urban Train to become a feasible solution to the problem of connecting the periphery with the city centre. Furthermore,...
-
Application of Pierson-Moskowitz wave spectrum to solution differential equations of multihull vessel
PublikacjaMotion of a dynamic system can be generated by different external or internal factors. At mathematical modelling external excitation factors of the most significant effect on the system, are selected. Such external factors are usually called excitations. Response of the system to given excitations is mathematically characterized by a definite transformation called operator of a system. For a broad class of dynamic systems the...
-
INFLUENCE OF THE HULL SHAPE ON THE ENERGY DEMAND OF A SMALL INLAND VESSEL WITH HYBRID PROPULSION
PublikacjaRecently, there has been a significant development of ecological propulsion systems, which is in line with the general trend of environmentally friendly “green shipping”. The main aim is to build a safe, low-energy passenger ship with a highly efficient, emission-free propulsion system. This can be achieved in a variety of ways. The article presents the main problems encountered by designers and constructors already at the stage...
-
Vessel Energy Requirement Prediction from Acceleration Stage Towing Tests on Scale Models
PublikacjaOne of the most crucial tasks for naval architects is computing the energy required to meet the ship’s operational needs. When predicting a ship’s energy requirements, a series of hull resistance tests on a scale model vessel is carried out in constant speed stages, while the acceleration stage measurements are ignored. Another important factor in seakeeping analysis is the ship’s hydrodynamic added mass. The second law of dynamics...
-
Onboard Energy Storage and Power Management Systems forAll-Electric Cargo Vessel Concept
PublikacjaThis paper presents an innovative approach to the design of a forthcoming, fully electric-powered cargo vessel. This work begins by defining problems that need to be solved when designingvessels of this kind. Using available literature and market research, a solution for the design of apower management system and a battery management system for a cargo vessel of up to 1504 TEUcapacity was developed. The proposed solution contains...
-
The Influence of Different Hydrothermal Processes Used in the Preparation of Brussels Sprouts on the Availability of Glucosinolates to Humans
PublikacjaCruciferous vegetables represent a valuable source of bioactive compounds. However, there is currently a deficiency of information regarding the extent to which these compounds remain bioaccessible to the body following thermal treatment and digestion processes within the digestive tract. Accordingly, the aim of this study was to evaluate the impact of heat treatment and in vitro digestion on the level of selected bioactive compounds...
-
A new design of the poded azimuth thruster for a diesel-hydraulic propulsion system of a small vessel
PublikacjaW artykule przedstawiono analizę różnych rodzajów okrętowych systemów napędowych z pędnikami azymutalnymi oraz rozwiązanie konstrukcyjne pędnika przeznaczonego dla małego statku z napędem diesel-hydraulicznym.Cechą charakterystyczna tego rozwiązania jest umieszczenie pod wodą głównego hydraulicznego silnika, napedzającego śrubę o skoku stałym mieszczoną w dyszy. Silnik zamocowany do gondoli połączonej sztywno z pionowową kolumną...
-
Formulation of spectral truss element for guided waves damage detection in spatial steel trusses
PublikacjaW pracy przedstawiono sformułowanie wielowęzłowego elementu spektralnego oraz odpowiedniego schematu całkowania ukierunkowanego na problem propagacji fal w kratownicach przestrzennych o dowolnej geometrii. Zaproponowane podejście nie ogranicza liczby węzłów w elemencie kratowym. Porównawcze rozwiązania numeryczne przeprowadzono dla konstrukcji idealnej (w stanie nieuszkodzonym) oraz dlakonstrukcji z miejscową nieregularnością w...
-
ADAPTIVE BACKSTEPPING TRACKING CONTROL FOR OVER-ACTUATED DP MARINE VESSEL WITH INERTIA UNCERTAINTIES
PublikacjaDesigning a tracking control system for an over-actuated dynamic positioning marine vessel in the case of insufficient information on environmental disturbances, hydrodynamic damping, Coriolis forces and vessel inertia characteristics is considered. The designed adaptive MIMO backstepping control law with control allocation is based on Lyapunov control theory for cascaded systems to guarantee stabilization of the marine vessel...
-
SUSSET - Sustaining Small Expanding Towns = Reprezentacyjne przestrzenie publiczne Helu i Pucka
PublikacjaPublikacja dotyczy europejskiego program SUSSET - Sustaining Small Expanding Towns INTERREG IIIC dotyczącego wsparcia rozwoju małych miast europejskich o różnych lokalizacjach. Trzy miasta Pomorza Lębork, Puck i Hel ze środków SUSSET podjęły trud rewitalizacji swych głównych przestrzeni miejskich, których nowy wizerunek posłuzyć miał wzmocnieniu potencjału turystycznego i odnowie tożsamości lokalnej.
-
Deduplication of Position Data and Global Identification of Objects Tracked in Distributed Vessel Monitoring System
PublikacjaVessel monitoring systems (VMS) play a very important role in safety navigation. In most cases, their structure is distributed and they are based on two data sources, namely Automatic Identification System (AIS) and Automatic Radar Plotting Aids (ARPA). Such approach results in several objects identification and position data duplication problems, which need to be solved in order to ensure the correct performance of a given VMS....
-
Deduplication of Tracked Objects Position Data at Single Observation Point of a Vessel Monitoring System
PublikacjaVessel Monitoring System (VMS) play a major role in safety navigation. In most cases they are based on two data sources, namely Automatic Identification System (AIS) and Automatic Radar Plotting Aids (ARPA). Integration of data obtained from these sources is an important problem, which needs to be solved in order to ensure the correct performance of a given VMS. In this paper basic functions which should be implemented in a tracked...
-
INFORMATION ABOUT DYNAMICS OF THE SEA SURFACE AS A MEANS TO IMPROVE SAFETY OF THE UNMANNED VESSEL AT SEA
PublikacjaOne of the fundamental states of the sea surface is its heave. Despite of years of the intense scientific inquiry, no clear understanding of the influence of this aspect on the dynamics of the sea environment has emerged. The separation of two nearby fluid elements which one may observed for example as a free floating of small objects on the sea surface (rescuers on the rough sea or small research vessels) is caused by the interaction...
-
Shaping the new planning curricula in the post-socialistic context lessons from Poland and Russia
PublikacjaPlanning education is the issue widely discussed during various conferences and seminars, especially ones grouping the representatives of universities offering professional education in this field. But to large extend this discourse is dominated by the realities and specifics of the highly- developed countries, which is also reflected in the structure of the organizations of universities offering these. At the same time planning...
-
REPORT Verification expertise of Detroit Diesel engines 16V149TI on the vessel ORP GEN. PUŁASKI
PublikacjaVerification expertise of propulsion engines for generating sets of the ORP GEN. PUŁASKI - type 16V149TI related to a complaint sent by the shipowner to Shiprepair Yard NAUTA S.A.
-
A New Method for Determining the Territorial Sea Baseline Using an Unmanned, Hydrographic Surface Vessel
Publikacja -
Review of Structural Strength in the Event of a One-Leg Punch through for a Wind Turbine Installation Vessel
Publikacja -
Relationship between seawater pollution and qualitative changes in the extracted proteins from mussels Mytilus galloprovincialis
PublikacjaCelem badań było znalezienie wiarygodnego bioznacznika dla oceny poziomu zanieczyszczenia wody morskiej. W tym celu porównano:-zawartość żelaza (Fe) oraz miedzi (Cu)-białek-poziomu aktywności przeciwutleniającejmałży (Mytilus galloprovincialis)zebranych z rejonów zanieczyszczonych i niezanieczyszczonych bułgarskiej strefy ekonomicznej Morza Czarnego.W badanich wykorzystano takie techniki analityczne jak: -spektroskopia w podczerwieni...
-
The Analysis of Container Vessel Service Efficiency in the Aspect of Berth and Handling Equipment Usage in Polish Ports
PublikacjaThe paper analyses the efficiency of container vessel service in Polish container terminals taking under considerations different berth layouts and handling equipment.
-
Rosja ideologiczna w „Zdobyciu władzy” Miłosza [Ideological Russia in The Seizure of Power by Czesław Miłosz]
Publikacja -
Vessel Scheduling Optimization Model Based on Variable Speed in a Seaport with One-Way Navigation Channel
Publikacja -
Factors determining accumulation of bisphenol A and alkylphenols at a low trophic level as exemplified by mussels Mytilus trossulus
PublikacjaThe aim of the study was to investigate abiotic and biotic factors influencing the accumulation of endocrine disrupting compounds (EDCs) such as bisphenol A (BPA), 4-tert-octylphenol (OP) and 4- nonylphenol (NP) in mussels Mytilus trossulus from the Gulf of Gdansk (Southern Baltic). The key abiotic factor influencing BPA, OP and NP accumulation in mussels is their hydrophilicity/lipophilicity, which affects their main assimilation...
-
The Proposal to “Snapshot” Raim Method for Gnss Vessel Receivers Working in Poor Space Segment Geometry
PublikacjaNowadays, we can observe an increase in research on the use of small unmanned autonomous vessel (SUAV) to patrol and guiding critical areas including harbours. The proposal to “snapshot” RAIM (Receiver Autonomous Integrity Monitoring) method for GNSS receivers mounted on SUAV operating in poor space segment geometry is presented in the paper. Existing “snapshot” RAIM methods and algorithms which are used in practical applications...
-
PARAMETRIC ANALYSIS OF THE EFFICIENCY OF THE COMBINED GAS-STEAM TURBINE UNIT OF A HYBRID CYCLE FOR THE FPSO VESSEL
PublikacjaA thermal diagram of the combined gas‒steam turbine unit of a hybrid cycle, which is an energy complex consisting of a base gas turbine engine with a steam turbine heat recovery circuit and a steam-injected gas turbine operating with overexpansion, is proposed. A mathematical model of a power plant has been developed, taking into consideration the features of thermodynamic processes of simple, binary, and steam-injected...
-
A novel approach exploiting properties of convolutional neural networks for vessel movement anomaly detection and classification
PublikacjaThe article concerns the automation of vessel movement anomaly detection for maritime and coastal traffic safety services. Deep Learning techniques, specifically Convolutional Neural Networks (CNNs), were used to solve this problem. Three variants of the datasets, containing samples of vessel traffic routes in relation to the prohibited area in the form of a grayscale image, were generated. 1458 convolutional neural networks with...
-
Projektowanie ideału, czyli wizja uniwersytetu przyszłości
PublikacjaW artykule zaprezentowano cechy uniwersytetu przyszłości, wykorzystując projektowanie ideału Ackoffa oraz projektowanie holograficzne Morgana.
-
The metabolic activity of denitrifying microorganisms accumulating polyphosphate in response to addition of fusel oil
PublikacjaThe effect of distillery waste product (fusel oil) as an alternative external organic carbon source (EOCS) was investigated in terms of the metabolic properties of denitrifying polyphosphate accumulating organisms (DPAOs). Samples of the non-acclimated biomass were collected from a local full-scale wastewater treatment plant employing A2/O type bioreactors. The acclimated biomass was obtained after cultivation (with fusel oil added)...
-
Simultaneous determination of non-steroidal anti-inflammatory drugs and natural estrogens in the mussels Mytilus edulis trossulus
Publikacja -
Methods of determination of C coefficient for period of rolling vessel in calm water for example of pax cargo ship
PublikacjaThis article presents a different approach to calculate the C coefficient needed to determine the period of own rolling vessel in calm water. The C coefficient is usually adopted as the approximate value from the available literature, usually depending on the type of vessel, and less dependent on the loading condition. In experimental studies of marine properties (seakeeping) often have a problem with the selection of the correct...
-
Computer-Aided System for Layout of Fire Hydrants on Boards Designed Vessel Using the Particle Swarm Optimization Algorithm
Publikacja -
Adaptive dynamic control allocation for dynamic positioning of marine vessel based on backstepping method and sequential quadratic programming
PublikacjaIt is generally assumed in dynamic positioning of over-actuated marine vessels that the control effectiveness matrix (input matrix) is known and constant, or, in case of fault information, it is estimated by the fault detection and diagnosis system. The purpose of the study is to develop the adaptive dynamic positioning control system for an over-actuated marine vessel in the presence of uncertainties and with emphasis on limited...
-
Comparison of PCBs and PAHs levels in European coastal waters using mussels from the Mytilus edulis complex as biomonitors
PublikacjaMussels from the Mytilus edulis complex were used as biomonitors for two groups of organic pollutants: polychlorinated biphenyls (PCBs, congeners: 28, 52, 101, 118, 138, 153 and 180) and polycyclic aromatic hydrocarbons (PAHs, naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, anthracene, fluoranthene, pyrene, benz(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(a)pyrene, indeno(1,2,3-cd)pyrene,...
-
Magnetic Signature Description of Ellipsoid-Shape Vessel Using 3D Multi-Dipole Model Fitted on Cardinal Directions
PublikacjaThe article presents a continuation of the research on the 3D multi-dipole model applied to the reproduction of magnetic signatures of ferromagnetic objects. The model structure has been modified to improve its flexibility - model parameters determined by optimization can now be located in the cuboid contour representing the object's hull. To stiffen the model, the training dataset was expanded to data collected from all four cardinal...
-
Investigation of ecological parameters of a gas turbine combustion chamber with steam injection for the floating production, storage, and offloading vessel
PublikacjaThe article is dedicated to the investigation of the possibility of using the contact type gas turbine cycle with steam injection into the combustion chamber for the floating production, storage, and offloading vessel in order to increase the specific power and efficiency and reduce emissions of toxic components. A new approach is proposed, associated with the use of the two-stage injection of superheated steam into a gas turbine...
-
Projektowanie ideału, czyli kilka uwag o strategii szkolnictwa wyższego
PublikacjaW artykule pokazano możliwość opracowania strategii uczelni przy wykorzystaniu metody projektowania ideału opisanej przez R. Ackoffa, J. Magidsona i H. Addisona
-
Rumination about the Russo‐Ukrainian War and its related factors among individuals in Poland and Ukraine
Publikacja -
Typology, current state and non-destructive testing of timber roof trusses of historic churches in the West Vistula Delta, Poland
PublikacjaThis paper presents the current state of conservation of historic roof churches located in the Żuławy of Gdańsk (Poland). It also describes the architecture of these temples, the region itself and old carpentry techniques for constructing roof trusses. Interdisciplinary tests were carried out in six churches. The geometry of the load bearing structures, the moisture content and the carpentry technique were specified. The field...
-
Władysław Jabłonowski i wileńska szkoła myślenia o Rosji [Władysław Jabłonowski and the Vilnius school of thinking about Russia]
Publikacja -
Influence of mussels (Mytilus galloprovincials) from polluted and non-polluted areas on some atherosclerosis indices in rats fed cholesterol
PublikacjaBadano wpływ diety z dodatkiem małży z obszarów zanieczyszczonych i obszarów czystych ekologicznie na niektóre objawy arteriosklerozy u szczurów.Na podstawie wyników badań in vitro, małże pochodzące z obszarów zanieczyszczonych charakteryzują sie większą zawartością protein, metali ciężkich oraz przeciwutleniaczy.Badania przeprowadzono na 28 szczurach podzielonych na 4 grupy. Szczury z grupy kontrolnej otrzymywały podstawową diete...
-
Small Vessel with Inboard Engine Retrofitting Concepts; Real Boat Tests, Laboratory Hybrid Drive Tests and Theoretical Studies
PublikacjaThe development of modern technologies and their increasing availability, as well as the falling costs of highly ecient propulsion systems and power sources, have resulted in electric or hybrid propulsions systems’ growing popularity for use on watercraft. Presented in the paper are design and lab tests of a prototype parallel hybrid propulsion system. It describes a concept of retrofitting a conventionally powered nine meter-long...