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    Wyświetlanie 1-15 z 15
    Tytuł:
    Moralność jako kluczowa operacja systemowa w teorii Niklasa Luhmanna
    Morality as crucial systemic operation in the theory of Niklas Luhmann
    Autorzy:
    Wieczorek-Orlikowska, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/2195909.pdf
    Data publikacji:
    2015-12-31
    Wydawca:
    Wydawnictwo Adam Marszałek
    Tematy:
    moralność
    system
    samoprzetwarzanie
    autopoiesis
    komunikacja
    morality
    self-processing
    communication
    Opis:
    Morality in the systems theory of Niklas Luhmann has a special place as a formula that enables communication, in other words functioning of the mechanism of the self-processing. Over the centuries this role in the system has evolved and today morality faces utterly new challenges. Will she still fulfill her commitments in the face of crisis of current values? Do we need new standards of behaviour in an era of progressive complexity?
    Moralność w teorii systemów Niklasa Luhmanna zajmuje miejsce szczególne, jako formuła umożliwiająca komunikację, a więc funkcjonowanie mechanizmu samoprzetwarzania. Na przestrzeni wieków jej rola w systemie ewoluowała, a współcześnie stają przed nią zupełnie nowe wyzwania. Czy nadal będzie spełniała swoje zadania w obliczu kryzysu dotychczasowych wartości? I czy w dobie postępującej złożoności potrzebne nam są nowe normy postępowania?
    Źródło:
    Świat Idei i Polityki; 2015, 14; 133-147
    1643-8442
    Pojawia się w:
    Świat Idei i Polityki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Forming a Personal Sense of Identity in the Contemporary World: Challenges and Difficulties
    Autorzy:
    Berzonsky, Michael D.
    Powiązania:
    https://bibliotekanauki.pl/articles/637321.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
    Tematy:
    identity, identity processing style, identity crisis, self-refl ection, values, informational, diffuse-avoidance, normative, ego-integrity, wisdom
    Opis:
    This article considers some normative cultural changes that have contributed to the identity “crises” faced at least by persons living in Western cultures. Identity is conceptualized as a self-structure that provides a frame of reference for processing self-relevant information, answering questions about the meaning and purpose of one’s life, and regulating the processes that individuals use to cope and adapt in everyday life. Individuals living in the modern world characterized by accelerating technological, social, and economic changes face major challenges and problems as they attempt to form and maintain a coherent sense of personal identity. Not all people, however, deal with these  identity confl icts in the same fashion. Research reveals reliable differences in how individuals negotiate or manage to avoid the tasks of constructing, maintaining, and reconstructing a sense of identity in the modern world. Three identity processing orientations are highlighted: informational, normative, and diffuse-avoidant. Although an informational processing orientation is associated with resources and skills that maximize adaptability in the modern world,  those resources do not provide a set of values or frame of reference for deciding what goals people should commit to or what they should live for. Some of values used to justify identity choices in the modern world are considered.
    Źródło:
    Psychologia Rozwojowa; 2009, 14, 4
    1895-6297
    2084-3879
    Pojawia się w:
    Psychologia Rozwojowa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnostics of the drive shaft bearing based on vibrations in the high-frequency range as a part of the vehicles self-diagnostic system
    Autorzy:
    Nowakowski, Tomasz
    Komorski, Pawel
    Powiązania:
    https://bibliotekanauki.pl/articles/2057986.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    self-diagnostic system
    vibration
    vehicles
    signal processing methods
    decision trees
    Opis:
    Currently, one of the trends in the automotive industry is to make vehicles as autonomous as possible. In particular, this concerns the implementation of complex and innovative selfdiagnostic systems for cars. This paper proposes a new diagnostic algorithm that evaluates the performance of the drive shaft bearings of a road vehicle during use. The diagnostic parameter was selected based on vibration measurements and machine learning analysis results. The analyses included the use of more than a dozen time domain features of vibration signal in different frequency ranges. Upper limit values and down limit values of the diagnostic parameter were determined, based on which the vehicle user will receive information about impending wear and total bearing damage. Additionally, statistical verification of the developed model and validation of the results were performed.
    Źródło:
    Eksploatacja i Niezawodność; 2022, 24, 1; 70--79
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Method for assessment of changes in the width of cracks in cement composites with use of computer image processing and analysis
    Autorzy:
    Tomczak, K.
    Jakubowski, J.
    Fiołek, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/178219.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    cracks in concrete
    crack width measurement
    image processing
    self-healing
    Opis:
    Crack width measurement is an important element of research on the progress of self-healing cement composites. Due to the nature of this research, the method of measuring the width of cracks and their changes over time must meet specific requirements. The article presents a novel method of measuring crack width based on images from a scanner with an optical resolution of 6400 dpi, subject to initial image processing in the ImageJ development environment and further processing and analysis of results. After registering a series of images of the cracks at different times using SIFT conversion (Scale-Invariant Feature Transform), a dense network of line segments is created in all images, intersecting the cracks perpendicular to the local axes. Along these line segments, brightness profiles are extracted, which are the basis for determination of crack width. The distribution and rotation of the line of intersection in a regular layout, automation of transformations, management of images and profiles of brightness, and data analysis to determine the width of cracks and their changes over time are made automatically by own code in the ImageJ and VBA environment. The article describes the method, tests on its properties, sources of measurement uncertainty. It also presents an example of application of the method in research on autogenous self-healing of concrete, specifically the ability to reduce a sample crack width and its full closure within 28 days of the self-healing process.
    Źródło:
    Studia Geotechnica et Mechanica; 2017, 39, 2; 73-80
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Self-catalysed hydrogenation of heavy oil and coal mixtures
    Autorzy:
    Li, Suan
    Sun, Zhenguang
    Liu, Qi
    Ye, Hang
    Wang, Kunpeng
    Powiązania:
    https://bibliotekanauki.pl/articles/27315628.pdf
    Data publikacji:
    2023
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    self-catalysed
    heavy oil
    hydrogenation
    coal liquefaction
    co-processing technology
    Opis:
    Coal liquefaction and heavy oil processing have become the urgent need for national energy strategic technology reserves in China. However, the inactivation of solid catalysts in these processes is an inevitable problem. Therefore,a self-catalysed method was proposed. The properties of raw oil could be changed by adding a modifier, as it has the function of self-catalysis, and the additional catalyst is no longer needed. The effect of 200 ppm modifier onthe hydrogenation of heavy oil and 500 ppm on the hydrogenation of coal and oil were investigated. The results showed that modifiers could be miscible with heavy oil at 50~100 °C and could change the properties of oil. When the temperature exceeded 250 °C, the sulfur element in the heavy oil combined with the metal element broughtin by the modifier to form a particle with the size of 2–8 nm, which could interact with the hydrogen molecule toactivate the hydrogen molecule. Activated hydrogen atoms further formed the complexes with nickel, vanadium,calcium, iron, and other elements in heavy oil to achieve the purpose of purifying and lightening the oil phase.Therefore, the self-catalysed method could be widely used in oil re fining and would greatly promote the development of the oil refining and catalysis industry.
    Źródło:
    Polish Journal of Chemical Technology; 2023, 25, 2; 8--14
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Manufacturing of a graphite calorimeter at Yazd Radiation Processing Center
    Autorzy:
    Ziaie, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/147318.pdf
    Data publikacji:
    2004
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    graphite calorimeters
    absorbed dose
    radiation processing
    self designed calorimeters (SDC)
    standard calorimeter
    Opis:
    In this work, a few quasi-adiabatic graphite calorimeters of different dimensions are described. These calorimeters have been manufactured by ourselves and studied for accurate absorbed dose measurements in 10 MeV electron beam. In order to prove the accuracy and reliability of dose measurements with the use of the self designed graphite calorimeters (SDC), an inter comparison study was performed on these calorimeters and RisŘ's graphite calorimeters (SC, standard calorimeter) at different doses by using a Rhodotron accelerator. The comparison shows conclusively SDC of the optimal size, the results agreeing with those obtained with the SC within 1%.
    Źródło:
    Nukleonika; 2004, 49, 4; 159-162
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inteligencja emocjonalna a Poznawczo-Doświadczeniowa Teoria „Ja” Seymoura Epsteina
    Emotional intelligence and Seymour Epstein’s Cognitive-Experiential Self-Theory of Personality
    Autorzy:
    Pracka, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/2087058.pdf
    Data publikacji:
    2012-08-28
    Wydawca:
    Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
    Tematy:
    emotional intelligence
    cognitive-experiential self theory
    rational-analytical system of processing information
    intuitive-experiential system of processing information
    Opis:
    The present article is an attempt of placing a construct of Emotional Intelligence in the structure of a personality of a man. The Cognitive-Experiential Self-Theory of Epstein, that arranges different spheres of functioning of a man, refering them to different systems of processing information, was used as a point of reference. Emotional intelligence, understood as a set of abilities needed to process pieces of emotional information, as a multidimensional construct of different abilities fits in the action of experiential and rational systems - both marked out by Epstein. Each ability as a part of emotional intelligence belongseither to the firstor to the second system. One can come to a conclusion that like the majority of psychological processes of a man can be attributed to their level of unconsciousness, preconscious or conscious, so the emotional functioning on different levels of consciousness. The most basic, primary abilities of emotional intelligence belong to the experimental system of a direct regulation, whereas those developed later, evolving on the base of the first abilities, are used on the level of the rational system of the indirect regulation.
    Źródło:
    Studia Psychologica; 2012, 1, 12; 47-66
    1642-2473
    Pojawia się w:
    Studia Psychologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wykorzystanie środków budżetu na obsługę informatyczną wyborów – nieprawidłowości w działaniach Krajowego Biura Wyborczego
    Use of State Budget Funds on IT Services during Elections – Irregularities in the Activity of the National Electoral Office
    Autorzy:
    Moszczyńska, Bogusława
    Powiązania:
    https://bibliotekanauki.pl/articles/417213.pdf
    Data publikacji:
    2015-12
    Wydawca:
    Najwyższa Izba Kontroli
    Tematy:
    National Electoral Office
    self-government elections
    processing the protocols
    local electoral commissions
    Opis:
    The National Electoral Office (Polish: Krajowe Biuro Wyborcze – KBW) authorised an information system for servicing self-government elections where significant errors were detected with regard to processing the protocols of local electoral commissions (as for their generating, developing and printing). The analysis of the source code of the central system, which was made by the experts employed by the Supreme Audit Office, revealed numerous irregularities, some of which were indeed critical. The errors detected could have resulted in unauthorised access to the data by the users of the central system, and to unauthorised access to the system and the data by persons who did not have an account there. The article presents the detailed findings of the audit.
    Źródło:
    Kontrola Państwowa; 2015, 60, 6 (365); 102-114
    0452-5027
    Pojawia się w:
    Kontrola Państwowa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the Twist Influencing Factors of Self-twist Yarns
    Analiza czynników wpływających na skręt przędz samoskrętnych
    Autorzy:
    Cui, Hong
    Gao, Xiuli
    Gao, Dawei
    Lin, Hongqin
    Powiązania:
    https://bibliotekanauki.pl/articles/233641.pdf
    Data publikacji:
    2019
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
    Tematy:
    strand
    self-twist yarn
    half cycle length
    self twists
    processing parameters
    pasmo
    przędza samoskrętna
    długość cyklu
    parametry strukturalne
    Opis:
    The factors influencing self twists include two main categories: structural parameters and process parameters on the self-twist spinning machine. Firstly from the twist formula of in-phase self-twist yarn over a half cycle length, six structural parameters can be obtained i.e. the oscillating stroke D, cycle length X, the distance L1 from the nip of the front rollers to the nip of the self-twist rollers, the perimeter of strand P, the feeding distance e of two strands, and the distance L2 from the nip of the self-twist rollers to the convergence guide O. Among these six parameters, the effect of the oscillating stroke D and cycle length X on the self-twist is opposite; therefore, the oscillating stroke D and cycle length X should have a reasonable configuration in order to get more self twists. At the same time, the greater the distance from the nip of the front rollers to the nip of the self-twist rollers can achieve more twists of self-twist yarn in the case of limited space. Twists over the half cycle length decrease with an increase in the circumference of strand P, along with that in the feeding distance e and distance L2 from the nip of the self-twist rollers to the convergence guide. The twists are also influenced by the processing parameters, such as the spinning speed, the pressure of the self-twist rollers, and the spinning tension E1 and E2 from the nip of the front rollers to the self-twist rollers and from the nip of the self-twist rollers to the convergence guide, respectively. The lower the spinning speed and the higher the pressure of the self-twist rollers, the more self-twists can be obtained. In the same way, the smaller the spinning tension E1 and E2, the more twists can be achieved. However, the value of spinning tension E1 and E2 cannot be lower than 1.025 and 0.92, otherwise the normal spinning process cannot be obtained.
    Czynniki wpływające na skręt dzielą się na dwie główne kategorie: parametry strukturalne i parametry maszyny przędzalniczej typu self-twist. Po pierwsze, z wzoru skrętu przędzy samoskrętnej można uzyskać sześć parametrów strukturalnych, tj. skok oscylacyjny D, długość cyklu X, odległość L1 od chwytu przednich rolek do chwytu rolek samoskręcających, obwód pasma P, odległość podawania e dwóch pasm i odległość L2 od chwytu rolek do prowadnicy konwergencji O. Spośród tych sześciu parametrów, efekt skoku oscylacyjnego D i długość cyklu X na skręt jest przeciwna; dlatego skok oscylacyjny D i długość cyklu X powinny zostać rozsądnie skonfigurowane, tak aby uzyskać większy samoskręt. Jednocześnie, im większa odległość od chwytu przednich rolek do chwytu rolek samoczynnego skrętu, tym większy skręt z przędzy. Na skręcenia mają również wpływ parametry przetwarzania, takie jak prędkość wirowania, nacisk rolek i naprężenie wirujące E1 i E2. Im niższa prędkość wirowania i większy nacisk rolek, tym wyższa wartość skrętów samoczynnych. Analogicznie, im mniejsze napięcie wirowania E1 i E2, tym więcej skrętów. Jednak wartość naprężenia wirującego E1 i E2 nie może być mniejsza niż odpowiednio 1,025 i 0,92, w przeciwnym razie przeprowadzenie normalnego procesu przędzenia staje się niemożliwe.
    Źródło:
    Fibres & Textiles in Eastern Europe; 2019, 2 (134); 39-44
    1230-3666
    2300-7354
    Pojawia się w:
    Fibres & Textiles in Eastern Europe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Factors Reducing the Risk of Social Maladjustment: A Narrative Approach to Adolescent Identity Formation
    Autorzy:
    Haertlé, Izabella
    Oleś, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/31341009.pdf
    Data publikacji:
    2023
    Wydawca:
    Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
    Tematy:
    maladjustment
    narrative approach
    adolescence
    identity processing styles
    life story interview
    self-confrontation method
    Opis:
    The research aimed to check if the construction of narrative identity by adolescents at risk of maladjustment contributes to their adaptive social functioning. It also aimed to identify factors related to identity on which the adjustment of adolescents at risk of social maladjustment depends. A natural experiment was conducted in Poland among youths from sociotherapy centres (n = 60, aged 18–20 years, 33 women and 27 men). A group of graduates at these centres (n = 31, aged 21–24 years, 17 women and 14 men) was included in the exploratory study and compared with the group of students in terms of maladjustment, ego-resiliency, and identity. The experiment shows that the construction of a narrative identity through a life story interview contributes to better social adaptation, which means a lower risk of maladjustment. The diffuse-avoidant identity style predisposes to maladjustment, whereas ego-resiliency is associated with a higher level of adjustment. Thus the narrative interview method can find application in the therapy of adolescents at risk of maladjustment.
    Źródło:
    Roczniki Psychologiczne; 2023, 26, 1; 47-65
    1507-7888
    Pojawia się w:
    Roczniki Psychologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Programmable, Asynchronous, Triangular Neighborhood Function for Self-Organizing Maps Realized on Transistor Level
    Autorzy:
    Kolasa, M.
    Długosz, R.
    Bieliński, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/226845.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    self-organizing maps
    parallel signal processing
    CMOS realization
    low energy consumption
    digital circuits
    Opis:
    A new hardware implementation of the triangular neighborhood function (TNF) for ultra-low power, Kohonen self-organizing maps (SOM) realized in the CMOS 0.18žm technology is presented. Simulations carried out by means of the software model of the SOM show that even low signal resolution at the output of the TNF block of 3-6 bits (depending on input data set) does not lead to significant disturbance of the learning process of the neural network. On the other hand, the signal resolution has a dominant influence on the overall circuit complexity i.e. the chip area and the energy consumption. The proposed neighborhood mechanism is very fast. For an example neighborhood range of 15 a delay between the first and the last neighboring neuron does not exceed 20 ns. This in practice means that the adaptation process starts in all neighboring neurons almost at the same time. As a result, data rates of 10-20 MHz are achievable, independently on the number of neurons in the map. The proposed SOM dissipates the power in-between 100 mW and 1 W, depending on the number of neurons in the map. For the comparison, the same network realized on PC achieves in simulations data rates in-between 10 Hz and 1 kHz. Data rate is in this case linearly dependend on the number of neurons.
    Źródło:
    International Journal of Electronics and Telecommunications; 2010, 56, 4; 367-373
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On a Possible Basis for Metaphysical Self-development in Natural and Artificial Systems
    Autorzy:
    White, Jeffrey
    Powiązania:
    https://bibliotekanauki.pl/articles/31234167.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Instytut Filozofii i Socjologii PAN
    Tematy:
    self
    purpose in life
    default mode network
    predictive processing
    AI value alignment
    developmental robotics
    Opis:
    Recent research into the nature of self in artificial and biological systems raises interest in a uniquely determining immutable sense of self, a “metaphysical ‘I’” associated with inviolable personal values and moral convictions that remain constant in the face of environmental change, distinguished from an object “me” that changes with its environment. Complementary research portrays processes associated with self as multimodal routines selectively enacted on the basis of contextual cues informing predictive self or world models, with the notion of the constant, pervasive and invariant sense of self associated with a multistable attractor set aiming to ensure personal integrity against threat of disintegrative change. This paper proposes that an immutable sense of self emerges as a global attractor which can be described as a project ideal self-situation embodied in frontal medial processes during more or less normal adolescent development, and that thereafter serves to orient agency in the more or less free development of embodied potentials over the life course in effort to realize project conditions, phenomenally identified with the felt pull towards this end as purpose of and source of meaning in life. So oriented, life-long self-development aims to embody solutions to problems at different timescales depending on this embodied purpose, ultimately in the service of evolutionary processes securing organism populations against threats of disintegrative change over timespans far beyond that of the individual. After characterizing the target sense of self, research circling this target is briefly surveyed. Self as global project and developmental neural correlates are proposed. Then, the paper discusses some implications for research in biological and artificial systems. Building from earlier work in cognitive neurorobotics, discussion affirms the value of reinforcement rituals including prayer in metaphysical self-development, considers implications for value alignment and rights associated with free will in the context of artificial intelligence and robot religion, and concludes by emphasizing the importance of self-development toward project ideals as source of meaning in life in the current social-political environment.
    Źródło:
    Filozofia i Nauka; 2022, 10, zeszyt specjalny; 71-99
    2300-4711
    2545-1936
    Pojawia się w:
    Filozofia i Nauka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ ścieków oczyszczonych odprowadzanych z Zakładu Przemysłu Mięsnego na jakość wody rzeki Szkwa
    The Impact of Treated Wastewater Discharge from MPP on the Quality of Water in a Collection Reservoir on the Szkwa River
    Autorzy:
    Wiater, J.
    Rynkiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818031.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    oczyszczanie ścieków
    przetwórstwo mięsa
    związki biogenne
    samooczyszczanie
    wastewater treatment
    meat processing
    nutrients
    self-purification
    Opis:
    The aim of the study was to analyze impact of treated wastewater discharged from the MPP on the receiver water quality, which constituted a drainage ditch. In addition, carried out studies were related to verification of water self-purification degree at the 15-km ditch section. The direct receiver of discharged treated domestic and industrial wastewater, rinsing waters form water treatment plant, precipitation and snowmelt waters discharged from facility area is specific drainage ditch that flows into the channel, which is the primary drainage ditch.The final receiver of discharged sewage and water, along the route from outlet and further drainage ditches system, is the river Szkwa. In order to determine fluctuations in water composition and its physico-chemical parameters as well as self-purification degree in drainage ditch and in drainage channel following indications were made: indicators of oxygen (COD, dissolved oxygen), nutrients (total nitrogen, total phosphorus). Samples were collected 3 times in a month, for 10 months period from November 2013 to August 2014. The monitoring of water from the receivers was implemented in six measuring points: one before inflow from sewage treatment facility, four points were deployed at ditch and canal, while the last point was located before the discharge to river. The obtained results showed that wastewater discharged from MPP increased the values of COD, nitrogen, phosphorus and decreased dissolved oxygen concentration in water from the outlet of facility specific drainage to ditch inlet drainage canal. On the basis of these indicators, self- purification of water was observed in watercourse on the canal mouth to river Szkwa. Water at the mouth of the River, was qualified to the first class of purity on the basis of dissolved oxygen, total nitrogen, pH and temperature value. Water quality was deteriorated by COD and phosphorus concentration. The concentration of this nutrient comparing to winter and spring seasons was the lowest in summer. Self-purification process was probably impacted by water temperature and correlated with larger absorption of phosphorus by microorganisms present in water as well as by plants in increased vegetation period. Plants growing at the edges were accumulating large amount of nitrogen and phosphorus compounds which resulted in water quality improvement in summer season.
    Źródło:
    Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 838-849
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Probabilistic morphological modeling of hydrographic networks from satellite imagery using Self-Organizing Maps
    Autorzy:
    Zaremba, M.
    Palenichka, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/206609.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    łańcuch Markowa
    modelowanie morfologiczne
    odwzorowanie samoporządkujące
    satelitarne rozpoznawanie obrazów
    sieć neuronowa
    szkieletyzacja
    Markov chains
    morphological modeling
    neural networks
    satellite image processing
    self-organizing maps
    skeletonization
    Opis:
    Adequate and concise representation of the shape of irregular objects from satellite imagery is a challenging problem in remote sensing. The conventional methods for cartographic shape representation are usually inaccurate and will provide only a rough shape description if the description process is to be fully automated. The method for automatic cartographic description of water basins presented in this paper is based on Self-Organizing Maps (SOM) - a class of neural networks with unsupervised learning. So-called structured SOM with local shape attributes such as scale and local connections of vertices are proposed for the description of object shape. The location of each vertex of piecewise linear generating curves that represent skeletons of the objects corresponds to the position of a particular SOM unit. The proposed method makes it possible to extract the object skeletons and to reconstruct the planar shapes of sparse objects based on the topological constraints of generating lines and the estimation of local scale. A context-dependent vertex connectivity test is proposed to enhance the skeletonization process. The test is based on the Markov random chain model of vertices belonging to the same generating line and the Bayesian decision-making principle. The experimental test results using Landsat-7 images demonstrate the accuracy of the proposed approach and its potential for fully automated mapping of hydrological objects.
    Źródło:
    Control and Cybernetics; 2002, 31, 2; 343-369
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Carbon Fibre Reinforced Polymer and Recycled Carbon Fibres on the compressive behaviour of self-compacting high-performance fibre-reinforced concrete
    Wpływ mat z włókien węglowych i włókien węglowych z recyklingu na efektywność wzmocnienia samozagęszczalnego fibrobetonu wysokowytrzymałościowego
    Autorzy:
    Ostrowski, Krzysztof
    Furtak, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/27312078.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    zbrojenie zewnętrzne
    fibrobeton
    beton wysokiej wytrzymałości
    włókno węglowe
    włókno recyklingowe
    beton samozagęszczalny
    przeróbka odpadów
    external reinforcement
    fibre reinforced concrete
    high-performance concrete
    recycled fibre
    carbon fibre
    self-compacting concrete
    waste processing
    Opis:
    In recent years, carbon fibres have been extensively used to strengthen concrete structures. In most cases, the lamination process is carried out using epoxy resin as matrix. In some cases, especially when strengthen structural elements made of weak concrete, it is possible to replace the epoxy resin with an inorganic, cement matrix, while at the same time maintaining a sufficient efficiency of strengthen understood as the percentage increase in the compressive strength of concrete samples due to the applied reinforcement in relation to the reference concrete. In these studies, elements of carbon fibres mats that are reinforced with a cement matrix were used as the starting product for fibre recovery. The laminate, which was used to reinforce concrete elements, was detached from the concrete surface and subjected to processing in order to obtain clean carbon fibre scraps without cement matrix. Then, the obtained carbon material, in shaped form, was used to strengthen self-compacting, high performance, fibre reinforced concrete (SCHPFRC). For comparative purposes, this concrete was also strengthened by carbon fibre mats (with one and three layers of CFRP). Each samples were tested in uniaxial compression test. The compressive strength of concrete reinforced with 1 and 3 layers of CFRP was higher by 37.9 and 96.3%, respectively, compared to the reference concrete. On the other hand, the compressive strength of concrete reinforced with 1 and 3 layers of carbon fibre scrapswas higher by 11.8 and 40.1%, respectively. Regardless of the reinforcement technique used, the composite elements showed a higher deformability limit in comparison plain concrete. The obtained results showed that it is possible to reuse carbon fibre to strengthen structural elements made of SCHPFRC effectively, using simple processing methods.
    W ostatnich latach włókna węglowe są szeroko stosowane do wzmacniania konstrukcji betonowych. W większości przypadków proces laminowania odbywa się z użyciem żywicy epoksydowej jako matrycy. Czasami, zwłaszcza przy wzmacnianiu elementów konstrukcyjnych wykonanych z betonu o stosunkowo niskiej wytrzymałości na ściskanie, możliwe jest zastąpienie żywicy epoksydowej matrycą nieorganiczną; cementową, przy jednoczesnym zachowaniu dostatecznej efektywności wzmocnienia - rozumianej jako procentowy wzrost wytrzymałości betonu na ściskanie wskutek zastosowania materiału kompozytowego, w odniesieniu do betonu referencyjnego. W procesie kruszenia jako nadawę zastosowano elementy betonowe wzmocnione matami z włókien węglowych przy zastosowaniu matrycy cementowej. Laminat został oderwany od powierzchni betonu i poddany dalszej obróbce w celu uzyskania czystych, niezawierających matrycy cementowej skrawków mat z włókna węglowego. Następnie otrzymany materiał został wykorzystany do wzmocnienia samozagęszczalnego, wysokowytrzymałościowego fibrobetonu (SCHPFRC). Dla celów porównawczych beton ten został także wzmocniony z użyciem mat z włókien węglowych (1 i 3 warstwy wzmocnienia). Próbki cylindryczne przebadano w teście jednoosiowego ściskania. Wytrzymałość na ściskanie betonu wzmocnionego 1 i 3 warstwami CFRP była wyższa odpowiednio o 37,9 i 96,3% w porównaniu z betonem referencyjnym. Natomiast wytrzymałość betonu wzmocnionego 1 i 3 warstwami strzępów z włókna węglowego była wyższa odpowiednio o 11,8 i 40,1%. Niezależnie od zastosowanej techniki wzmocnienia, próbki kompozytowe cechowały się wyższą odkształcalnością graniczną w odniesieniu do betonu referencyjnego. Uzyskane wyniki wykazały, że możliwe jest wykorzystanie włókien węglowych z recyklingu do efektywnego wzmocnienia elementów konstrukcyjnych wykonanych z SCHPFRC, przy użyciu nieskomplikowanej metody przeróbki odpadu.
    Źródło:
    Archives of Civil Engineering; 2023, 69, 2; 53--64
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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