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    Wyświetlanie 1-8 z 8
    Tytuł:
    Historical context of the institutionalization of state-society relations in the field of volunteering in Ukraine
    Autorzy:
    Golub, Vyacheslav
    Powiązania:
    https://bibliotekanauki.pl/articles/1201723.pdf
    Data publikacji:
    2015-09-15
    Wydawca:
    Uniwersytet Gdański. Instytut Geografii
    Tematy:
    volunteering
    state-society relations
    historical context
    milestones
    Ukraine
    Opis:
    The article analyses the course of the history of the state-society relations in the sphere of volunteering in Ukraine. The main purpose of the paper is to systematize existing knowledge in that area. The author characterizes every stage of the development of the state-society relations in the sphere of volunteering. The result of the study is the list of the key stages of the history of the state-society relations in the sphere of volunteering and visual embodiment of chronological axis of this process in Ukraine.
    Źródło:
    Journal of Geography, Politics and Society; 2015, 5, 1; 22-31
    2084-0497
    2451-2249
    Pojawia się w:
    Journal of Geography, Politics and Society
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Two-Phase Algorithm for a Resource Constrained Project Scheduling Problem with Discounted Cash Flows
    Autorzy:
    Klimek, M.
    Łebkowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/375952.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    resource-constrained project scheduling
    discounted cash flows
    milestones
    heuristics
    Opis:
    This paper presents a Resource-Constrained Project Scheduling Problem (RCPSP) settled by contractual milestones. The criterion analysed here is the maximisation of aggregate discounted cash flows from the contractor´s perspective, known as an RCPSP problem with Discounted Cash Flows (RCPSPDCF). The cash flows analysed here cover the contractor´s cash outflows (negative cash flows), related to the commencement of individual activities, and cash inflows (positive cash flows) after the fulfilment of individual milestones. The authors propose a two-phase algorithm for solving the problem defined. In the first phase, the simulated annealing metaheuristics is used, designed to identify a forward schedule with as high total DCF as possible. In the second phase, the best first-phase schedule is improved by right shifts of activities. To this end, the procedure which iteratively shifts tasks by one unit is applied, with a view to maximising the objective function. Activity shifts take into consideration precedence and resource constraints, and they are performed for a specified resource allocation to activities. This paper also includes an analysis of the problem for a sample project. The results of computational experiments are then analysed. The experiments were run with the use of standard test problems from the Project Scheduling Problem LIBrary (PSPLIB), with additionally defined cash flows and contractual milestones.
    Źródło:
    Decision Making in Manufacturing and Services; 2013, 7, 1-2; 51-68
    1896-8325
    2300-7087
    Pojawia się w:
    Decision Making in Manufacturing and Services
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Robust buffer allocation for scheduling of a project with predefined milestones
    Autorzy:
    Klimek, M.
    Łebkowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/375929.pdf
    Data publikacji:
    2009
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    resource-constrained project scheduling
    predictive-reactive scheduling
    robust buffer allocation
    milestones
    Opis:
    The paper discusses the problem of robust buffer allocation for Resource- Constrained Project Scheduling Problem (RCPSP) with predefined milestones(1) , for which execution deadlines have been established. To solve the problem, an algorithm is proposed supporting insertion of unit time buffers, with the simultaneous maximisation of new metrics of arrangement robustness. The presented results of experimental research speak for usability of the solutions proposed. The effectiveness is studied with use of test tasks(2) included in the Project Scheduling Problem Library (PSPLIB) with additionally specified project milestones.
    Źródło:
    Decision Making in Manufacturing and Services; 2009, 3, 1-2; 49-72
    1896-8325
    2300-7087
    Pojawia się w:
    Decision Making in Manufacturing and Services
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Robustness of schedules for project scheduling problem with cash flow optimisation
    Autorzy:
    Klimek, M.
    Łebkowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/953048.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    resource-constrained project scheduling with cash flow optimisation
    proactive scheduling
    milestones
    Opis:
    The paper presents the resource-constrained project scheduling with cash flow optimisation. New project models with bonuspenalty system and payoff in stages have been proposed. For the models presented, the application of proactive scheduling is analysed, as designed to improve project execution under uncertainty. Next, schedule robustness is discussed and measures of robustness are proposed.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 1005-1015
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heuristics for project scheduling with discounted cash flows optimisation
    Autorzy:
    Klimek, M.
    Łebkowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/202107.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    resource-constrained project scheduling
    discounted cash flows
    milestones
    ograniczone zasoby planowania projektu
    przepływy pieniężne
    kamienie milowe
    Opis:
    The article presents the resource-constrained project scheduling problem with the maximisation of discounted cash flows from the contractor’s perspective: with cash outflows related to starting individual activities and with cash inflows for completing project stages (milestones). The authors propose algorithms for improving a forward active schedule by iterative one-unit right shifts of activities, taking into account different resource flow networks. To illustrate the algorithms and problem, a numerical example is presented. Finally, the algorithms are tested using standard test problems with additionally defined cash flows and contractual milestones.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 3; 613-622
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Financial optimisation of the scheduling for the multi-stage project
    Autorzy:
    Klimek, M.
    Łebkowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/201022.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    resource - constrained project scheduling problem
    discounted cash flows
    milestones
    backward scheduling
    simulated annealing
    zdyskontowane przepływy pieniężne
    kamienie milowe
    symulowane wyżarzanie
    Opis:
    The paper analyses the problem of discounted cash flow maximising for the resource-constrained project scheduling from the project contractor’s perspective. Financial optimisation for the multi-stage project is considered. Cash outflows are the contactor’s expenses related to activity execution. Cash inflows are the client’s payments for the completed milestones. To solve the problem, the procedure of backward scheduling taking into account contractual milestones is proposed. The effectiveness of this procedure, as used to generate solutions for the simulated annealing algorithm, is verified with use of standard test instances with additionally defined cash flows and contractual milestones.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 6; 899-908
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Priority algorithms for the problem of financial optimisation of a multi-stage project
    Autorzy:
    Klimek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/117742.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    resource-constrained multi-stage project scheduling
    discounted cash flows
    milestones
    priority algorithms
    ograniczone zasoby
    planowanie projektu
    zdyskontowane przepływy pieniężne
    kamienie milowe
    algorytmy priorytetów
    Opis:
    The article presents the problem of the financial optimisation of a multi-stage project from the contractor's perspective, where customer's payments are analysed as a cash inflow (contractor's revenues) after completing contractual stages and contractor's expenses incurred for the activities executed. In order to solve the problem, priority algorithms are proposed: single-pass and multi-pass ones, using different priority rules and tech-niques for generating solutions dedicated to the investigated optimisation model. The article presents a comparison of the effectiveness of individual algorithms in the case of adequately prepared test problems.
    Źródło:
    Applied Computer Science; 2017, 13, 4; 20-34
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Techniques of generating schedules for the problem of financial optimization of multi-stage project
    Autorzy:
    Klimek, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/117864.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    resource-constrained project scheduling problem
    discounted cash flows
    payment project scheduling
    multi-stage project
    milestones
    problem planowania zasobów
    zdyskontowane przepływy pieniężne
    planowanie projektów płatności
    wieloetapowy projekt
    kamienie milowe
    Opis:
    The article presents the problem of scheduling a resource-constrained project with discounted cash flow maximization from the perspective of a contractor. The contractor's expenses (cash outflows for the contractor) are associated with the execution of activities. The client's payments (cash inflows for the contractor) are performed after fulfilling the agreed project stages. The following techniques are suggested for solving the problem: the activity right-shift procedure, the backward scheduling with the optimization of completion dates for the agreed project stages and the modified triple justification technique. The effect of these techniques of generating schedules is illustrated for an exemplary project. Finally, an experimental analysis of the proposed procedures is presented.
    Źródło:
    Applied Computer Science; 2019, 15, 1; 18-35
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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