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Wyszukujesz frazę "Kuchta, D." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-11 z 11
    Tytuł:
    On a bicriteria optimal production plan
    Autorzy:
    Kuchta, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/970401.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    production schedule
    makespan
    flow shop
    open shop
    Opis:
    The classical mathematical programming problem used for the determination of a production plan maximising total income or profit is complemented with a second objective, concerning the makespan of the products being manufactured on two machines. As a result, a bicriterial integer linear programming problem is obtained, which can be solved by means of classical methods. A computational example is presented and discussed.
    Źródło:
    Control and Cybernetics; 2007, 36, 2; 357-366
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Time buffers in the open shop problem
    Autorzy:
    Kuchta, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/206438.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    open shop
    stable schedule
    schedule buffers
    Opis:
    A stability concept for the open shop schedule is proposed. The underlying aim is to protect an organisation against serious problems caused by accumulation of delays in various processes realised in the organisation at the same time. The stability criterion is coupled with that of schedule makespan minimisation. Buffers are used as a tool of ensuring schedule stability. A fuzzy model determining the optimal schedule with respect to both criteria is formulated based on expert opinions as to the desired buffer size and the desired planned makespan. The model is expressed as a mixed integer linear programming model. The approach is illustrated by means of an example.
    Źródło:
    Control and Cybernetics; 2014, 43, 4; 531-546
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Robust goal programming
    Autorzy:
    Kuchta, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/970486.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    programowanie z wieloma warunkami
    rozwiązanie solidne
    optymalizacja przedziałowa
    multiobjective programming
    robust solution
    interval optimisation
    Opis:
    In the paper a new approach to goal programming is presented: the robust approach, applied so far to a single-objective linear programming. It is a "pessimistic" approach, meant to find a solution which will be reasonably good even in a bad case, but it is based on the assumption that almost never everything goes bad - the decision maker can control and simulate the pessimistic aspect of the decision situation. The pessimism refers here to uncertain coefficients in the goal functions. It is assumed that in each case only a certain number of them can take on unfavourable values - but we do not know which ones. A robust solution, i.e. the one which will be good even in the most pessimistic case among those considered to be possible - is determined, using only the linear programming methods.
    Źródło:
    Control and Cybernetics; 2004, 33, 3; 501-510
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of fuzzy numbers to the estimation of an ongoing project’s completion time
    Autorzy:
    Kuchta, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/406498.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    estimation of a project’s completion time
    project control
    risk of project delay
    fuzzy duration of an activity
    Opis:
    A dynamic, interactive approach to the control of a project’s realization time is proposed. The duration time of the project’s activities is assumed to depend on certain factors whose influence may change in time. Based on the project’s history up to a certain moment, the change in influence of these factors has been evaluated and estimates of the duration of activities which have not been started yet are updated. The estimates of the duration time of the activities and project are expressed in the form of fuzzy numbers. This allows us to keep a constant track of the risk of the project not keeping the deadline and to be aware of which factors influence delays, thus where to act in order to minimize the final delay while it is not yet too late – in the course of the project’s realization, as early as possible.
    Źródło:
    Operations Research and Decisions; 2012, 22, 4; 87-103
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modified optimization model for selecting project risk response strategies
    Autorzy:
    Marchwicka, E.
    Kuchta, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/406557.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    risk management
    optimization
    linear programming
    zarządzanie ryzykiem
    optymalizacja
    programowanie liniowe
    Opis:
    The authors present modifications of the optimization model for selecting project risk response strategies proposed by Zhang and Fan. The weaknesses of the original model has been identified and an improved model with the main suggestions has been proposed. The main improvement concerned the objective function. The modified model was tested using a real project in the electrical industry – engineering and construction of the main low voltage switchboard for a live fish carrier (Helix Q7000) in Norway. Project team members report that the analysis is time consuming but results are satisfying – the model allows more systematic and efficient risk management.
    Źródło:
    Operations Research and Decisions; 2017, 27, 2; 77-90
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Risks characteristic to Agile project management methodologies and responses to them
    Autorzy:
    Walczak, W.
    Kuchta, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/406318.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    risk
    risk management
    agile software development
    agile project management
    Opis:
    Agile methods for project management are often treated as methods for mitigating risk. However, there is disagreement as to whether explicit methods of risk management should be used in projects which are executed according to Agile methodology or is the implicit risk management built into Agile methodologies sufficient. To contribute to the discussion, an attempt has been made to identify risks that are either caused by the introduction of an Agile methodology to a project or become more significant when such methodology is in use. If such risks exist, this would be evidence that explicit risk management is required, even in the case of Agile methodologies. The results of this research may be useful for any organization that is in the process of selecting a methodology for project management and is considering Agile methodologies.
    Źródło:
    Operations Research and Decisions; 2013, 23, 4; 75-95
    2081-8858
    2391-6060
    Pojawia się w:
    Operations Research and Decisions
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fuzzy goal programming - one notion, many meanings
    Rozmyte programowanie celowe - jedno pojęcie, wiele znaczeń
    Autorzy:
    Chanas, S.
    Kuchta, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/205891.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    liczba rozmyta
    programowanie celowe
    fuzzy number
    goal programming
    Opis:
    A survey of fuzzy goal programming approach is presented, including three new approaches. Various approaches are classified according to the role that fuzzy numbers play in them. For each approach the corresponding model and the solution procedure are discussed.
    Zaprezentowano przegląd podejść w ramach rozmytego programowania celowego, obejmującego także trzy nowe podejścia. Omawiane podejścia zostały sklasyfikowane według roli, jaką pełnią w nich liczby rozmyte. Przedyskutowano dla każdego podejścia odpowiadający mu model decyzyjny i procedurę otrzymywania rozwiązania.
    Źródło:
    Control and Cybernetics; 2002, 31, 4; 871-890
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fuzzy global sensitivity analysis of fuzzy net present value
    Autorzy:
    Sari, I. D.
    Kuchta, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/206340.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    fuzzy sensitivity analysis
    fuzzy net present value
    Opis:
    The cash flows of an investment project are influenced by several factors. All the factors influencing fuzzy net present value of a project should be taken into account, together with their variability, in order to analyze the whole project, and to make the best decisions during the project’s life. In this paper a fuzzy global sensitivity analysis method is proposed for fuzzy net present value to determine the influences of the factors on the worth of an investment project. The results of the proposed method for an application are also interpreted.
    Źródło:
    Control and Cybernetics; 2012, 41, 2; 481-496
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A comparison of buffer sizing techniques in the critical chain method. case study
    Autorzy:
    Ślusarczyk, A.
    Kuchta, D.
    Verhulst, P.
    Huyghe, W.
    Lauryssen, K.
    Debal, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/384843.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    project management
    critical chain
    buffers
    risk management
    Opis:
    The presented paper is an attempt to evaluate the application of different buffer sizing methods (within the critical chain approach) to a real-life project, in order to show that it is important to choose consciously one of the existing methods. The implementation of the different approaches to the buffer sizing procedure resulted in eight unique schedules. Once all the methods were implemented, the authors of this paper stumbled upon 2 inconveniences (slack vs. buffer, splitting up buffers). Funding solution for these handicaps caused obtaining eight more schedules. In order to evaluate all the determined solutions, the authors decided to establish a simulation study. A random dataset was generated of 2000 observations using the mean and variance calculated for the probability distribution determined by three possible durations (optimistic, expected and pessimistic) given by the project team members. To validate the performance of different methods, two penalty systems were designed. The test results indicate which specific buffer sizing technique performs best in the presented case, taking into account the attitude of the decision maker. The simulation study is the proposal of a method to be applied in each case of the critical chain method application, because it makes the use of the critical chain method more effective.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2013, 7, 3; 43-56
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sinusogenes orbital complication as the first symptom of refractory granulomatosis with polyangiitis and the use of rituximab in treatment. A case report
    Autorzy:
    Mielcarek-Kuchta, D.
    Lembicz, M.
    Puszczewicz, M.
    Rzymkowska, M.
    Nowicka, A.
    Kopeć, T.
    Leszczyńska, M.
    Szyfter, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1917276.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Medyczny w Białymstoku
    Tematy:
    Granulomatosis with polyangiitis
    refractory GPA
    rituximab
    Opis:
    Granulomatosis with polyangiitis (GPA) is a rare disease involving multiple organs and systems, characterized by necrotizing inflammation of small and medium-sized vessels and formation of granulomas. There are several forms of the disease. In the generalized form (including severe one), cyclophosphamide in combination with steroids is usually used. There are also cases of a particularly severe and refractory course of the disease, which do not respond to the standard treatment. In such cases some other methods of treatment are recommended, including biological agents such as rituximab - anti-CD20 monoclonal antibody. We described a case of a 17-year-old patient with refractory GPA, resistant to standard remission induction therapy. In case of this patient, advanced lesions were mainly localized in the lungs, sinuses and middle ear. The disease progressed despite standard therapy. Therefore, it was decided to use an alternative treatment with a biological agent – rituximab. In the assessment after therapy we observed a significant clinical recovery as well as the improvement in laboratory tests, pulmonary function tests and radiological imaging. Within six months after the administration of rituximab, progression of the disease was not observed, which was evidenced in radiological imaging and pulmonary function tests. The case illustrates how biological agents, including rituximab, are extending the therapeutic options for patients with GPA, especially with severe forms of the disease.
    Źródło:
    Progress in Health Sciences; 2015, 5, 1; 265-270
    2083-1617
    Pojawia się w:
    Progress in Health Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multicriteria Fuzzy Evaluation of Project Success in R&D Projects
    Autorzy:
    Kuchta, Dorota
    Powiązania:
    https://bibliotekanauki.pl/articles/578514.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Ekonomiczny w Katowicach
    Tematy:
    Projekt badawczo-rozwojowy
    Sukces projektu
    Zbiory rozmyte
    Fuzzy sets
    Project success
    Research and development project
    Opis:
    The paper reviews the state of art in project success evaluation, especially with respect to R&D projects, with emphasis on the ambiguity of such evaluation, its strong dependence on the con-text and on the evaluator. We also recall basic information about fuzzy numbers and propose the concept of fuzzy rules which are used in the suggested procedure of R&D project evaluation. The procedure is described and illustrated by means of a real- -world case study.
    Źródło:
    Multiple Criteria Decision Making; 2019, 14; 44-59
    2084-1531
    Pojawia się w:
    Multiple Criteria Decision Making
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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