Temat: cost optimization - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Complex system operation cost optimization
Autorzy:: Kołowrocki, K.
Soszyńska-Budny, J.
Tematy:: safety
cost
operation process
optimization
exemplary application; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Powiązania:: https://bibliotekanauki.pl/articles/2069145.pdf Link otwiera się w nowym oknie
Opis:: The general model of a complex system changing its safety structure, its components safety parameters and its operation cost during the variable operation process and linear programming are applied to optimize the system operation process in order to get the system operation cost optimal values. The optimization problem allowing to find the optimal values of the transient probabilities of the complex system operation process at the particular operation states that minimize the system unconditional operation cost mean value in the safety states subset not worse than a critical system safety state under the assumption that the system conditional operation cost mean values in this safety state subset at the particular operation states are fixed is presented. Further, the procedure of finding the optimal values operation cost is presented and applied to the exemplary complex technical system.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A Novel Technique of Optimization for the COCOMO II Model Parameters using Teaching-Learning-Based Optimization Algorithm
Autorzy:: Khuat, T. T.
Le, M. H.
Tematy:: COCOMO II
cost estimation
NASA software
optimization
teaching-learning-based optimization algorithm; Pokaż więcej
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/309064.pdf Link otwiera się w nowym oknie
Opis:: Software cost estimation is a critical activity in the development life cycle for controlling risks and planning project schedules. Accurate estimation of the cost before the start-up of a project is essential for both the developers and the customers. Therefore, many models were proposed to address this issue, in which COCOMO II has been being widely employed in actual software projects. Good estimation models, such as COCOMO II, can avoid insufficient resources being allocated to a project. However, parameters for estimation formula in this model have not been optimized yet, and so the estimated results are not close to the actual results. In this paper, a novel technique to optimize the coefficients for COCOMO II model by using teaching-learning-based optimization (TLBO) algorithm is proposed. The performance of the model after optimizing parameters was tested on NASA software project dataset. The obtained results indicated that the improvement of parameters provided a better estimation capabilities compared to the original COCOMO II model.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Cost optimization of a M/M/1/W V &MAV queueing system using Newton–Raphson and particle swarm optimization techniques
Autorzy:: Remya, Ramachandran
Bouchentouf, Amina Angelika
Kalidass, Kaliappan
Tematy:: Markovian queue
working vacation
adaptive vacations
cost model
optimization; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/58969824.pdf Link otwiera się w nowym oknie
Opis:: This paper is concerned with the optimal control of a Markovian queueing system subjected to multiple adaptive vacation and working vacation policies. This system is applicable in diverse modern technologies, in particular in call centers. We establish the steady-state solution as well as important system characteristics by means of probability generating functions technique. We also construct the expected total cost for this model and develop a procedure to determine the optimal service rate that yields the minimum cost. Further, we carried out a comparative analysis to obtain the minimum cost using the Newton–Raphson method and particle swarm optimization (PSO) algorithm.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Testing the integrated package of tools supporting decision making on identification, prediction and optimization of complex technical systems operation, reliability and safety. Part 7. IS&RDSS Application – Exemplary system operation and reliability new strategy
Autorzy:: Kołowrocki, K.
Soszyńska-Budny, J.
Xie, M.
Tematy:: reliability
operation process
operation cost
complex systems
optimization
availability; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Powiązania:: https://bibliotekanauki.pl/articles/2069532.pdf Link otwiera się w nowym oknie
Opis:: The paper presents the collection of the results concerned with the exemplary system operation, reliability, availability, maintenance and cost analysis, modelling, prediction and optimization coming from the Integrated Safety and Reliability Decision Support System - IS&RDSS application performed in its six previous parts. On the basis of the collected operation and reliability parameters and characteristics of the exemplary system before and after its operation process optimization, there is suggested its operation and reliability new strategy.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Optimization of Critical Infrastrucutre operation and Safety With Considering Climate-Weather Change Impact - Minimizing Operation Cost
Autorzy:: Kołowrocki, K.
Kuligowska, E.
Soszyńska-Budny, J.
Tematy:: critical infrastructure
safety
operation process
climate-weather change
operation cost
optimization; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Powiązania:: https://bibliotekanauki.pl/articles/2068786.pdf Link otwiera się w nowym oknie
Opis:: The general model of a critical infrastructure changing its safety structure, its components safety parameters and its operation cost during the variable operation process and linear programming are applied to optimize the critical infrastructure operation process in order to get the critical infrastructure operation cost optimal value. The optimization problem allowing to find the optimal values of the transient probabilities of the critical infrastructure operation process at the particular operation states that minimize the critical infrastructure operation cost mean value in the safety states subset not worse than a critical safety state is presented. The optimization of operation cost of the critical infrastructure is proposed with considering climate-weather change process influence on the system safety.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Heuristic algorithms for the optimization of total weighted completion time for asynchronous transmission in a packet data transmission system
Autorzy:: Piórkowski, A.
Werewka, J.
Bielecka, M.
Tematy:: total weighted completion time
total cost factor
optimization
heuristic algorithms
packet transmission; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Powiązania:: https://bibliotekanauki.pl/articles/206673.pdf Link otwiera się w nowym oknie
Opis:: In this paper, the minimization of total weighted completion time (total cost) for asynchronous transmission in distributed systems is discussed. Special attention has been paid to the problem of message scheduling on the sender side. Messages to be sent form a queue, therefore the order in which they are to be sent has to be set. Scheduling algorithms can be chosen to optimize scheduling criteria such as total completion time or total weighted completion time. The message scheduling problem becomes complicated considerably when the transmitted data stream between the sender and the receiver is formed into packets. TheWSPT (Weighted Shortest Processing Time) scheduling rule, which orders messages according to non-decreasing length and weight ratios has been proven to be non-optimal. It has been demonstrated that the problem of minimizing the total weighted completion time is NP-hard. Here, we propose heuristic algorithms for scheduling messages and experimentally evaluate the performance of these scheduling algorithms.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Integrated software tools supporting decision making on identification,prediction and optimization of complex technical systems operation,reliability and safety. Part 6. Integrated software tools application – Exemplary system operation cost analysis and maintenance optimization
Autorzy:: Blokus-Roszkowska, A.
Kołowrocki, K.
Salahuddin, H. M.
Tematy:: system operation process
optimization
cost analysis
corrective and preventive maintenance
software tools; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Powiązania:: https://bibliotekanauki.pl/articles/2069499.pdf Link otwiera się w nowym oknie
Opis:: The integrated software tools are applied to the exemplary system operation cost analysis and maintenance optimization. Using the computer program CP 8.12 there is obtained the evaluation of the cost before and after the exemplary system operation process optimization and next the computer program CP 8.13 is applied for operation cost analysis of the improved exemplary system. The methods of corrective and preventive maintenance policy maximizing availability and minimizing renovation cost of the complex technical systems in variable operation conditions are illustrated for the analyzed exemplary system using equivalently the computer program CP 8.14 for maintenance policy maximizing system availability and CP 8.15 for minimizing system renovation cost.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Oil transport in port. Part 3. Port oil piping transportation system safety and resilience impacted by the climate-weather change process and operation process
Autorzy:: Kołowrocki, K.
Kuligowska, E.
Soszyńska-Budny, J.
Torbicki, M.
Tematy:: piping system
operation process
climate-weather change impacts
safety
resilience
cost analysis
optimization; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Powiązania:: https://bibliotekanauki.pl/articles/2068783.pdf Link otwiera się w nowym oknie
Opis:: The paper is concerned with the application of the model of critical infrastructure safety prediction with considering its operation and climate-weather change impacts. The general approach to the prediction of critical infrastructure safety and resilience is proposed and the safety and resilience indicators are defined for a critical infrastructure impacted by its operation process and the climate-weather change process. Moreover, there is presented the model application for port oil piping transportation system safety and resilience prediction. Further, the cost analysis and optimisation of critical infrastructure operation process impacted by climateweather change is proposed and applied to the considered piping system.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Minimalizacja kosztów ogrzewania fluidalnego rozdrobnionego ciała stałego z wykorzystaniem egzergii gazu odlotowego
Cost minimization for fluidized heating of solid particles with the utilization of outlet gas exergy
Autorzy:: Poświata, A.
Tematy:: optymalizacja
fluidyzacja
ogrzewanie fluidalne
minimalizacja kosztów
optimization
fluidization
fluidized heating
cost minimization; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/2072720.pdf Link otwiera się w nowym oknie
Opis:: Praca dotyczy problemu optymalizacji procesu ogrzewania cząstek ciała stałego w poziomym fluidalnym wymienniku ciepła. W modelu uwzględniono dyspersję osiową dla przepływającego ciała stałego. Podczas optymalizacji minimalizowany jest całkowity koszt procesu przez wyznaczenie ilości gazu ogrzewającego oraz profilu temperatury tego gazu dla przypadku wykorzystania egzergii gazów opuszczających złoże. Wyniki obliczeń optymalizacyjnych pokazują wpływ liczby Pecleta i kinetyki procesu na profile optymalnej temperatury gazu oraz optymalny całkowity przepływ gazu.
This study concerns the optimization issue of solid particles heating in a horizontal fluidized heat exchanger. A model of the process takes into account the axial dispersion of solid particles. A total cost of the process is minimized by searching heating gas flow rate and a profile of inlet gas temperature for the outlet gas exergy fully used. The results of optimization calculations are presented. An influence of the Peclet number and process kinetics on the profile of gas optimal temperature and on the optimal total flow rate was analyzed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Optimization of Operation and Safety of Baltic Port and Shipping Critical Infrastructure Network with Considering Climate-Weather Change Influence – Minimizing Critical Infrastructure Network Operation Cost
Autorzy:: Guze, S.
Kołowrocki, K.
Tematy:: critical infrastructure network
operation process
climate-weather change process
operation cost
optimization
port
shipping; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Powiązania:: https://bibliotekanauki.pl/articles/2068751.pdf Link otwiera się w nowym oknie
Opis:: The paper is devoted the optimization of operation process and minimization of operation cost for Baltic Port and Shipping Critical Infrastructure Network (BPSCIN) at variable operation conditions related to the climateweather change. For this network, the optimal transient probabilities that minimize the mean value of the total operation costs are found. Finally, cost analysis of BPSCIN operation impacted by climate-weather change is presented in case the BPSCIN is non-repairable and in case it is repairable after exceeding its critical safety state.
Dostawca treści:: Biblioteka Nauki

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