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    Wyświetlanie 1-8 z 8
    Tytuł:
    A System for Management of Urbanized Areas in the Aspect of Acoustic Effects
    Autorzy:
    Kompała, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/177475.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    environment
    noise
    system
    management
    optimization
    Opis:
    Within the boundaries of many municipal urbanized areas, large grounds are found, from which the noise is emitted into the environment, surrounded by the regions liable to acoustic protection. Such a condition generates many problems including also those ones related to the lack of the fulfillment of requirements concerning environmental protection against excessive noise. Therefore the aim of vital importance is the proper management of municipal grounds, both in view of the investment in policy steering, especially of new investments, and in the case of activities aimed at maintaining or restoring (revitalizing) the acoustic properties on the grounds that have already been used or simply degraded before. Keeping the scale of the problem in mind, such activities must be carried on not temporarily, but must have a systemic character. The structure of every system is characterized by the appropriate relationships among their elements and the properties of those relationships. In case of the noise management system, the elements of such a system are the activities connected with the management itself that are the actions which rely on specifying the aims and causing their realization within the scope and on the grounds subject to the managing entity. The superior aim of such activities should be to supply the tools for improvement of management and in the process of taking decisions that relate to investments including the of optimization conditions and maintenance of socio-economic importance of such areas.
    Źródło:
    Archives of Acoustics; 2011, 36, 1; 57-63
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    GPU - Accelerated fluid flow approximation of the Active Queues Management algorithms
    Aproksymacja płynna algorytmów AQM - wspomagana przez GPU
    Autorzy:
    Domański, A.
    Domańska, J.
    Czachórski, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/375722.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    computer networks
    active queue management
    CUDA environment
    Opis:
    In the article we study a model of TCP connection with Active Queue Management in an intermediate IP router. We use the fluid flow approximation technique to model the interactions between the set of TCP flows and AQM algoithms. Computations for fluid flow approximation model are performed in the CUDA environment.
    Artykuł opisuje zastosowanie aproksymacji płynnej do modelowania interakcji pomiędzy zbiorem strumieni TCP, a mechanizmami aktywnego zarządzania buforami (AQM). Obliczenia zostały przeprowadzone w środowisku GPU. Wyniki przedstawione w artykule potwierdzają przewagę algorytmu CHOKe nad standardowym algorytmem AQM: mechanizmem RED.
    Źródło:
    Theoretical and Applied Informatics; 2013, 25, 2; 93-104
    1896-5334
    Pojawia się w:
    Theoretical and Applied Informatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fecal sludge management : Insights from selected cities in Sub-Saharan Africa
    Autorzy:
    Odey, Emmanuel Alepu
    Abo, Bodjui Olivier
    Giwa, Abdulmoseen Segun
    Li, Zifu
    Powiązania:
    https://bibliotekanauki.pl/articles/205486.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sanitation
    fecal sludge
    sludge management
    West Africa
    urban environment
    Opis:
    Recent studies have shown that over half of the world’s population lives in urban areas, with the number of people living in slums growing by over 20 million per year and people living in urban areas lacking access to adequate sanitation. This study presents a review of the challenges facing fecal sludge management (FSM). A globally relevant issue in developing urban centers, especially in selected developing countries in West Africa was discussed. Some key findings of the review are that effective sanitation in developing areas depends on the chain of services and that one of the largest problems in sanitation is FSM. This study presents the initial steps toward understanding the main issues involving FSM in developing cities of West Africa. Results are intended to be used as a support for decisions on policies, strategies for FSM, and investments for improved treatment facilities in the region. The study suggests that governments and private sector organizations should develop adequate measures for handling fecal sludge.
    Źródło:
    Archives of Environmental Protection; 2019, 45, 2; 50-57
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geografia versus gospodarka przestrzenna
    Autorzy:
    Suliborski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2021508.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    geography
    spatial management
    space
    geographical environment
    Nauki Humanistyczne i Społeczne
    Źródło:
    Studia komitetu przestrzennego zagospodarowania kraju PAN; 2018, 183; 17-26
    0079-3507
    Pojawia się w:
    Studia komitetu przestrzennego zagospodarowania kraju PAN
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przestrzenne uwarunkowania gospodarki odpadami w środowisku zamieszkania
    Spatial determinants of waste management in the home environment
    Autorzy:
    Wesołowska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/145944.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    planowanie przestrzenne
    gospodarka odpadami
    środowisko zamieszkania
    spatial planning
    waste management
    home environment
    Opis:
    Każda działalność człowieka generuje powstawanie odpadów. W ostatnich dekadach ilość odpadów zaczęła się znacząco zwiększać, jednocześnie zagrażając ludziom i środowisku ze względu na zawartość substancji szkodliwych, taki jak plastik, metale ciężkie i groźne dla środowiska substancje chemiczne. Prowadzona obecnie polityka gospodarki odpadami zobowiązuje do eliminacji tych substancji ze składowisk, ogólnego zmniejszenia ilości odpadów deponowanych na składowiskach oraz zwiększenia frakcji odzyskiwanych do wtórnego wykorzystania. Działania tego typu powodują, że już na etapie gospodarstw domowych odpady powinny być segregowane na co najmniej cztery frakcje. W celu określenia wpływu gospodarki odpadami na zagospodarowanie najbliższego otoczenia człowieka, czyli gospodarstwa domowego, niezbędne jest przeanalizowanie systemu gospodarki odpadami na poszczególnych szczeblach powstawania odpadów, ich gromadzenia i segregacji - do momentu przekazania ich do dalszej obróbki, utylizacji lub składowania. W niniejszym artykule starano się przedstawić możliwości nowych rozwiązań, pozwalających na takie gospodarowanie przestrzenią w miejscu zamieszkania, aby ograniczać miejsce zajmowane przez odpady.
    Every human activity generates waste. In recent decades, the amount of waste started to significantly increase at the same time threatening people and the environment due to the content of harmful substances such as plastics, heavy metals and dangerous chemicals. The current waste management policy requires elimination of these substances from landfills, reducing the overall amount of waste deposited in landfills and increase in the fraction recovered for recycling. At the level of household waste should be segregated, at least into four fractions. In order to determine the impact of waste management for the development of man's closest environment, ie household, it is necessary to analyze the waste management system at various levels resulting from the waste collection and segregation until their transfer to further treatment, disposal or landfilling. This article seeks to provide propositions for new solutions to such management of space at home to reduce the space occupied by the waste.
    Źródło:
    Kwartalnik Architektury i Urbanistyki; 2011, 56, 4; 101-107
    0023-5865
    Pojawia się w:
    Kwartalnik Architektury i Urbanistyki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of an Adaptive Management Strategy of High-Technology Enterprises in Modern Crisis
    Autorzy:
    Novikov, Sergey V.
    Tikhonov, Gennady V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2023982.pdf
    Data publikacji:
    2021-09
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    adaptation
    planning
    enterprise
    external environment
    tools
    management
    analysis
    crisis
    business processes
    strategy
    Opis:
    The article is devoted to the development of a multicomponent adaptive strategy for managing Russian high-tech enterprises in modern crisis conditions. Adaptability and flexibility are considered as the most important indicators of the efficiency of structures, their ability to ensure sustainable operation and effective innovative development of high-tech enterprises. A significant place in the article is devoted to possible approaches and methods of adaptive management of the enterprise in crisis, with the help of which changes in the internal and external environment are monitored, which can be expected and random, make current operational decisions that contribute to the achievement of pre-set goals based on correction of certain tasks. The questions about the quality of adaptation, adaptive characteristics of the structure and their consistency with the level and quality of adaptation of other elements of the enterprise, conjugation of adaptability and flexibility and pace of changes are considered. A number of modern techniques related to the development of strategies for the development of high-tech enterprises in crisis conditions are analyzed. The necessity of conducting a comprehensive accounting of the crisis as the main factor associated with the uncertainty of the external environment at the stage of strategic analysis is substantiated. There is an option, in which it is possible to include the crisis and its main characteristics into the strategic three competence model of the enterprise, as an additional controlled parameter. There is a general specificity of the formation of the strategy of a high-tech enterprise in conditions of risk and uncertainty.
    Źródło:
    Management and Production Engineering Review; 2021, 13, 3; 106-115
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Size of Non-Metallic Inclusions in High-Grade Medium Carbon Steel
    Autorzy:
    Lipiński, T.
    Wach, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/381358.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    quality management
    environment protection
    high-grade steel
    steel
    non-metallic inclusions
    quantitative metallography
    zarządzanie jakością
    ochrona środowiska
    stal wysokiej jakości
    Opis:
    Non-metallic inclusions found in steel can affect its performance characteristics. Their impact depends not only on their quality, but also, among others, on their size and distribution in the steel volume. The literature mainly describes the results of tests on hard steels, particularly bearing steels. The amount of non-metallic inclusions found in steel with a medium carbon content melted under industrial conditions is rarely presented in the literature. The tested steel was melted in an electric arc furnace and then desulfurized and argon-refined. Seven typical industrial melts were analyzed, in which ca. 75% secondary raw materials were used. The amount of non-metallic inclusions was determined by optical and extraction methods. The test results are presented using stereometric indices. Inclusions are characterized by measuring ranges. The chemical composition of steel and contents of inclusions in every melts are presented. The results are shown in graphical form. The presented analysis of the tests results on the amount and size of non-metallic inclusions can be used to assess the operational strength and durability of steel melted and refined in the desulfurization and argon refining processes.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 4; 55-60
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    E-bike use in urban commuting: empirical evidence from the home-work plan
    Autorzy:
    Di Gangi, Massimo
    Comi, Antonio
    Polimeni, Antonio
    Belcore, Orlando Marco
    Powiązania:
    https://bibliotekanauki.pl/articles/2173925.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    e-bike
    commuting to work
    sustainable mobility
    environment
    mobility management
    micromobility
    rower elektryczny
    dojazd do pracy
    zrównoważona mobilność
    środowisko
    zarządzanie mobilnością
    mikromobilność
    Opis:
    A substantial part of the environmental issues relies on fossil fuels. This dependence is crucial in transport even though many incentives and interventions have been proposed to reduce pollutant emissions. Electric vehicles with zero emissions might represent a viable solution in urban areas. Many cities encouraged modal shift policies from cars to an e-bike or car-sharing/pooling with electric vehicle fleets. This paper reports the ongoing outputs from a pilot project, relying on a modal shift to the e-bike, promoted in the city of Messina (Southern Italy) by the Ministry of Ecological Transition. The objective is to assess, in the territorial context of Messina, the e-bike as a competitive transport mode in terms of social awareness of eco-friendly mobility solutions. The available dataset consists of about nine months of observations; data on total distance and trips have been gathered for each e-bike. It emerged how, in a typical working day, the average distance travelled is about 6.9 km, the usage rate for working days is about 81 %, and the carbon dioxide reduction is about 245 kg per person each year. During the project, information was also collected on the satisfaction with the e-bike and the quality of travel. It emerged that regular bicycle use has good repercussions on the interviewees' psycho-physical well-being, reducing the stress factor connected with urban mobility. Despite mechanical breakdowns and the lack of an infrastructure dedicated to active mobility representing a limitation, travel comfort and safety are two latent variables that are transver-sally valid within the population; about 15 % became familiar with the e-bike and made it their primary mode choice for everyday activities. In this sense, outputs represent a starting point for future policies and give back adjustments before introducing similar services to students from the university and second-grade schools.
    Źródło:
    Archives of Transport; 2022, 62, 2; 91--104
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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