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Tytuł:
Basics of the management system for transformations of production planning and control processes
Autorzy:
Łopatowska, J.
Powiązania:
https://bibliotekanauki.pl/articles/409542.pdf
Data publikacji:
2018
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
Intelligent Manufacturing Systems
production
production planning and control
Opis:
Intensive development of technologies, in particular of the spinotronics, nanotechnology, robotics, and ICT, shapes the new generation production systems. Their distinctive feature is the flexibility associated with production intelligence. It is required from all processes, including the production planning and control processes (PPCP). The article is of conceptual character. It was prepared based on literature research. It encompasses issues related to Next Generation Manufacturing Systems, including Intelligent Manufacturing Systems in particular, covering solutions for PPCP. The article was also built upon the results of research on the level of automation of Polish manufacturing enterprises. The research results in the development of general assumptions of an informatic management system for the transformation of PPCP for technologically advanced and organizational production systems. The system has a modular structure resulting from its functions, which include identifying the need for transformation, its goals and vision, planning, design, implementation and evaluation of transformation. It takes the technical, organizational, socio-psychological and economic aspects of transformation into account. Choosing the right solutions for PPCP purposes allows for flexible adaptation to the requirements and needs of the environment. Its essential part is the knowledge database, thanks to which it is possible to shape the system’s intelligence.
Źródło:
Research in Logistics & Production; 2018, 8, 4; 317-328
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of Aggregate Production Planning Problems with and without Productivity Loss using Python Pulp Package
Autorzy:
Rehman, Hakeem Ur
Ahmad, Ayyaz
Ali, Zarak
Baig, Sajjad Ahmad
Manzoor, Umair
Powiązania:
https://bibliotekanauki.pl/articles/2023845.pdf
Data publikacji:
2021-12
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aggregate production planning
productivity
Python PuLP
optimization
Opis:
Traditionally the aggregate production plan helps in determining the inventory, production, and work-force, based on the demand forecasts without considering the productivity loss at a tactical level in supply chain planning. In this paper, we include the productivity loss into traditional aggregate production plan and the prescriptive analytics technique, linear programming, is used to solve this problem of practical interest in the domain of multifarious businesses and industries. In this study, we discussed two model variations of the aggregate production planning problem with and without productivity loss, i) fixed work-force, and ii) variable Work Force. The mathematical models were designated to be solved by using an open-source python pulp package in order to evaluate the impacts of the productivity loss on both the models. PuLP is an open-source modeling framework provided by the COIN-OR Foundation (Computational Infrastructure for Operations Research) for linear and integer Programing problems written in Python. The computational results indicate that the productivity loss has direct impact on the workforce hiring and firing.
Źródło:
Management and Production Engineering Review; 2021, 14, 4; 38-44
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Method to Improve Planning of Product Placement on a Printing Sheet
Autorzy:
Czerniachowska, Kateryna
Żywicki, Krzysztof
Wichniarek, Radosław
Powiązania:
https://bibliotekanauki.pl/articles/1841430.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
manufacturing operation
production planning
optimization
mathematical programming
Opis:
Major manufactures are moving towards a sustainability goal. This paper introduces the results of collaboration with the leading company in the packaging and advertising industry in Germany and Poland. The problem addresses the manufacturing planning problem in terms of minimizing the total cost of production. The challenge was to bring a new production planning method into cardboard manufacturing and paper processing which minimizes waste, improves the return of expenses, and automates daily processes heavily dependent on the production planners’ experience. The authors developed a module that minimizes the total cost, which reduces the overproduction and is used by the company’s manufacturing planning team. The proposed approach incorporates planning allowances rules to compromise the manufacturing requirements and production cost minimization.
Źródło:
Management and Production Engineering Review; 2021, 12, 1; 119-128
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Closed Loop Supply Chain with Production Planning
Autorzy:
Stecz, W.
Powiązania:
https://bibliotekanauki.pl/articles/409322.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
closed loop
supply chain
optimization
production planning
Opis:
We present a Closed Loop Supply Chain (CLSC) model that supports a production planning (PP) process. CLSC model is based on CLSC framework model which consists of four main centers: collection, recovery center, distribution and disposal centers. These logistics parts support main production lines. Some quantity of the products is recovered and the factories don’t need to spend money for production. This is a simple cost reduction process. In CLSC literature one can hardly meet the models of production planning processes supported by CLSC. Important problem with that models is the computational complexity when one wants to prepare production plans for more than one time period. This is connected with a number of the numerical variables of the CLSC and PP models which are usually Integer Programming models solved with Branch & Bound algorithms. We present some modifications of the widely known and used constraints in the CLSC models to optimize solving process. All the experiments were conducted with the CPLEX solver.
Źródło:
Research in Logistics & Production; 2016, 6, 2; 117-128
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Way of ETO SMEs to Mass Customization – Overview from Real Production Systems
Autorzy:
Ciesla, Bartosz
Mleczko, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/2023980.pdf
Data publikacji:
2021-09
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
production planning
production control
mass customization
robust process design
Opis:
In this article conclusions from nearly 10 years of collaboration with Polish and German Engineer-to-Order (ETO) small and medium-sized enterprises (SMEs) from mechanical sector was presented. Research objective was to highlight common organizational problems they are dealing with, which prevent them from transition to Mass Customizers. As a result, a concept of 5 foundations for robust process design was proposed: procedures, product selection, machining philosophy, planning and storage, cross-functional teams. More practical solutions from this field have to be published to fill the research gap.
Źródło:
Management and Production Engineering Review; 2021, 13, 3; 97-105
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inconsistencies in the Production Process Resulting From the Employment Structure
Autorzy:
Nowacki, Krzysztof
Pawlak, Szymon
Powiązania:
https://bibliotekanauki.pl/articles/27315797.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
production
production planning
underestimation
produkcja
planowanie produkcji
procesy produkcyjne
Opis:
Underestimating the duration of the production process is one of the basic factors determining the occurrence of delays in the duration of individual operations included in the production process. Occurrence of underestimation of production time brings many negative effects, which include, among others: underestimation of the company's production capacity, accumulation of intermediate stocks, impeded planning of the production process (scheduling of the production process) and increase of production costs. The problem of erroneous estimation of the duration of the production process is most often found in production plants specializing in serial or mass production, implemented in a parallel or series-parallel system. The basic causes that underestimate the duration of the production process include errors in production scheduling, incorrect determination of durations of individual operations carried out as part of the analyzed production process, complexity of production operations and employment structure. The occurrence of delays in the production process can also be affected by accident events that generate underestimation and costs for the enterprise (including social and economic costs). In many cases, many algorithms are used to reduce underestimation and optimization and scheduling of the entire production process. The publication presents an analysis of the production process in which the duration of the production process is underestimated, taking into account the employment structure in the manufacturing company. The analyzes allow to determine the level of underestimation of operations of the production process depending on the form of employment (steel workers – employed under a contract of employment in the production plant, and temporary workers employed by temporary work agencies), identification of the reasons for the underestimation of individual production positions and the length of their time occurrence.
Źródło:
New Trends in Production Engineering; 2019, 2, 2; 205-213
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Planowanie produkcji oparte na prognozowaniu - metoda ATP
Production planning based on foresight - ATP method
Autorzy:
Michna, M.
Senczyna, S.
Powiązania:
https://bibliotekanauki.pl/articles/113171.pdf
Data publikacji:
2014
Wydawca:
STE GROUP
Tematy:
przedsiębiorstwo
planowanie produkcji
prognozowanie
company
production planning
forecasting
Opis:
Ugruntowanymi narzędziami wspomagania zarządzania przedsiębiorstwa są systemy informatyczne ERP. Konieczność utrzymywania wysokiej dynamiki odpowiedzi przedsiębiorstwa na potrzeby otoczenia stawia nowe wymagania wobec narzędzi wspomagających. Informacje o trendach zmian w potrzebach otoczenia mogą poprawić planowanie w dłuższym okresie. W efekcie, przedsiębiorstwo przy minimalnych zapasach własnych, może utrzymać wysoką dynamikę odpowiedzi. Ze względu na pragmatykę wspomagania zarządzania przedstawiamy rozwiązanie w kontekście funkcji systemu ERP. W publikacji prezentujemy metodę ATP, włączającą prognozowanie potrzeb otoczenia do planowania produkcji w przedsiębiorstwie. Pozwala to usprawnić zarządzanie przy możliwie małych kosztach reorganizacji i wdrażania nowych technologii informatycznych.
Well-established tools supporting business management are ERP systems. The need to maintain a high growth company response to the needs of the environment puts new demands on the tools supporting. Information about the trends of changes in the needs of the environment can improve planning in the long term. As a result, the enterprise with minimal inventories of their own, can maintain high dynamic response. Due to the pragmatics of management support to present a solution in the context of the ERP system functionality. In the publication we present a method of ATP, enabling forecasting environment to production planning in the company. This allows you to streamline the management at the smallest possible cost of the reorganization and implementation of new technologies.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2014, 2 (8); 129-141
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie systemów ekspertowych w planowaniu procesu produkcyjnego
The use of experts systems in process production planning
Autorzy:
Plinta, D.
Kutshenreiter-Praszkiewicz, I.
Powiązania:
https://bibliotekanauki.pl/articles/276914.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
planowanie produkcji
systemy ekspertowe
production planning
expert systems
Opis:
W artykule przedstawiono zastosowanie systemów ekspertowych (eksperckich) w planowaniu procesu produkcyjnego. Celem planowania jest ustalenie możliwych terminów realizacji zamówień oraz kolejności realizacji zleceń produkcyjnych. Uwzględnienie wszystkich czynników wpływających na decyzje związane z planowaniem procesów produkcyjnych staje się niemożliwe bez wykorzystania metod i narzędzi wspierających podejmowanie decyzji. Są to np. systemy ekspertowe oparte na przedstawionej w artykule metodzie QFD oraz metodzie modelowania i symulacji.
The paper presents application of expert systems in the planning of production process. The aim of planning is to determine the possible terms of orders and the sequence of execution of production orders. Taking into account all factors influencing decisions, which are related to planning processes, it becomes impossible without the use of methods and tools for decision support, for example expert systems with methods presented in this paper - with QFD, modeling and simulation.
Źródło:
Pomiary Automatyka Robotyka; 2012, 16, 2; 162-166
1427-9126
Pojawia się w:
Pomiary Automatyka Robotyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytical Research on Operational Issues of the Remanufacturing Process in India
Autorzy:
Sinha, Ajay Kumar
Rao, Hanumantha
Powiązania:
https://bibliotekanauki.pl/articles/27324209.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
remanufacturing
barrier
operational management
production planning
assembly
disassembly
Opis:
Environmental awareness among the masses compelled many companies to adopt sustainable practices in their business operations. Remanufacturing is a well-tested and successful business model practiced in many European countries. But in many African and Asian countries, it is still nascent, including India. This research study tries to identify the critical factors in the “Operational Management” area for the viability of remanufacturing business in India. For this purpose, a questionnaire was developed based on the important factors identified from the extensive literature review. An online questionnaire survey was conducted among Indian white goods appliance manufacturing companies and their suppliers. The responses were analyzed statistically and ranked based on their criticality in initiating remanufacturing business in India. The findings may help the Indian government and manufacturing firms to frame proper strategies related to the operational management issues of remanufacturing business in India.
Źródło:
Management and Production Engineering Review; 2023, 14, 4; 19--27
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Scheduling of the Manufacturing Cell Work with the Use of a Genetic Algorithm on the Example of a Flexible Production System
Autorzy:
Matuszny, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/2201163.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
production planning
production control
production scheduling
genetic algorithm
production engineering
production process
Opis:
The article is to present the application of genetic algorithm in production scheduling in a production company. In the research work the assumptions of the methodology were described and the operation of the proposed genetic algorithm was presented in details. Genetic algorithms are useful in complex large scale combinatorial optimisation tasks and in the engineering tasks with numerous limitations in the production engineering. Moreover, they are more reliable than the existing direct search algorithms. The research is focused on the effectivity improvement and on the methodology of scheduling of a manufacturing cell work. The genetic algorithm used in the work appeared to be robust and fast in finding accurate solutions. It was shown by experiment that using this method enables obtaining schedules suitable for a model. It gives a group of solutions that are at least as good as those created by the heuristic rules.
Źródło:
Management and Production Engineering Review; 2022, 13, 4; 98--106
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Robust production programplanning in ramp-up situations
Autorzy:
Schuh, G.
Schürmeyer, M.
Powiązania:
https://bibliotekanauki.pl/articles/1833814.pdf
Data publikacji:
2013
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
production planning and control
Cybernetics
Ramp-up Management
Opis:
Producing companies are confronted with a growing number of product ramp-ups, since product life cycles are decreasing and product diversity is increasing. Production Planning and Control (PPC) of ramp-up products is particularly challenging, as there is a significant lack of reliable experienced data. The information deficit is exceptionally high for the first step of PPC process, namely Production Program Planning (PPP). The paper in hand proposes an innovative approach of cybernetic PPP that enables companies with numerous ramp-ups to design reliable and fast PPP processes that can react highly adaptable on unpredictable environmental disturbances. The Viable System Model (VSM) is used as frame of reference for the design of PPP processes in line with principles from management cybernetics.
Źródło:
Research in Logistics & Production; 2013, 3, 4; 255-264
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stochastic programming model for production planning with stochastic aggregate demand and spreadsheet-based solution heuristics
Autorzy:
Saadouli, Nasreddine
Powiązania:
https://bibliotekanauki.pl/articles/2100358.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
production planning
stochastic programming
efficient algorithm
decision-making
Opis:
By discretising the stochastic demand, a deterministic nonlinear programming formulation is developed. Then, a hybrid simulation-optimisation heuristic that capitalises on the nature of the problem is designed. The outcome is an evaluation problem that is efficiently solved using a spreadsheet model. The main contribution of the paper is providing production managers with a tractable formulation of the production planning problem in a stochastic environment and an efficient solution scheme. A key benefit of this approach is that it provides quick near-optimal solutions without requiring in-depth knowledge or significant investments in optimisation techniques and software.
Źródło:
Operations Research and Decisions; 2021, 31, 4; 117--127
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extending Value Stream Mapping for Lean Production Planning and Control
Autorzy:
van Landeghem, Hendrik
Cottyn, Johannes
Powiązania:
https://bibliotekanauki.pl/articles/2172188.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
value stream mapping
production planning
production control
lean
supply chain
Opis:
Value Stream Mapping has been a key Lean tool since its publication in 1988, offering a strategic view on the reconfiguration of an organization’s processes to reduce overall lead time. It has since been used in many different domains beyond (car) manufacturing. However, the potential offered by its concise representation of both material flow and its controlling information flow seems to have been largely underused. Most literature reports on VSM in the context of waste detection and local improvements. VSM also supports redesigning the material flow (even on a supply chain level) towards (pure) pull systems. However, it fails to adequately give guidance on how to gradually evolve towards this ultimate ideal state. This paper wants to offer a significant contribution to practitioners on how to use VSM to bridge this gap. Another key challenge that remains largely unpublished is how to adapt the planning systems accordingly at each reconfiguration of the material flow. This paper presents extensions to the basic VSM tool to meet these challenges. It includes a more comprehensive 5-level hierarchy that allows to position most lean flow-related techniques. It also extends the basic “door-to-door” VSM with new symbols to accommodate these techniques into the map. Finally, it introduces a new set of 13 questions to support redesigning not only the material flow, but also the information flow. The resulting richer future state maps better support the gradual evolution towards a leaner future shop floor, as illustrated with an example.
Źródło:
Management and Production Engineering Review; 2022, 13, 3; 75--82
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Towards dedicated decision support tools: CLP-based approach
Autorzy:
Banaszak, Z.
Józefczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/118061.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
decision support
constraint logic programming
production planning
modeling
scheduling
Opis:
Constraint programming (CP) is an emergent software technology for declarative description and effective solving of large combinatorial problems especially in areas of integrated production planning. In that context, the CP can be considered as a well-suited framework for development of decision making software supporting small and medium size enterprises in the course of Production Process Planning (PPP). The problem considered regards of finding of computationally effective approach aimed at scheduling of a new project subject to constraints imposed by a multi–project environment. In other words, we are looking for an answer whether a given production order specified by its cost and completion time can be accepted in a given manufacturing system specified by available production capability, i.e., the time-constrained resources availability. The problem belongs to a class of multi-mode case project scheduling problems, where the problem of finding a feasible solution is NPcomplete. The aim of the paper is to present the CP modeling framework as well as to illustrate its application to decision making in the case of a new production order evaluation. So, the contribution emphasizes benefits derived from CPbased DSS and focuses on constraint satisfaction driven decision-making rather than on an optimal solution searching.
Źródło:
Applied Computer Science; 2005, 1, 1; 161-180
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CP approach to design of steady-state flow of repetitive manufacturing processes in SME
Autorzy:
Wójcik, R.
Bocewicz, G.
Powiązania:
https://bibliotekanauki.pl/articles/118159.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
production planning
waiting-free schedules design
constraint logic programming
Opis:
Concurrent execution of work orders in the small and medium size enterprises (SME) imposes a necessity to consider many control problems concerning systems of repetitive concurrent manufacturing processes using common resources in mutual exclusion. In many cases a production system with a given structure of the processes resource requests can be seen as composed of subsystems with n cyclic processes sharing one resource. For given sets of possible values of the processes operation execution times a problem of finding schedules guaranteeing that no process waits for access to the common resources is considered. In particular for the assigned times of the operations execution a subproblem of finding all possible starting times of work orders execution for which waiting-free schedules exist has been formulated as a constraint programming (CP) problem. The starting times derived can be used as an alternative starting times of work orders execution in case of their possible delays. A state space of the problem’s solutions has been reduced using constraints based on the necessary and sufficient conditions for existence of a waiting-free n-process steady-state schedule. An illustrative example of Mozart-based software application to the solution of constraint logic programming problem considered has been presented.
Źródło:
Applied Computer Science; 2005, 1, 1; 201-218
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Towards CLP-based task-oriented DSS for SME
Autorzy:
Tomczuk, I.
Bzdyra, K.
Banaszak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/118215.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
decision support
constraint logic programming
production planning
modelling
scheduling
Opis:
Decision making supported by task-oriented software tools plays a pivotal role in a modern enterprises. That is because commercially available ERP systems are not able to respond in an interactive on-line/real-time mode. It means a new generation of DSS that enable a fast prototyping of production flows in multiproject environment as well as an integrated approach to a layout planning, production routing, batch-sizing and scheduling problems is needed. In that context, the constraint logic programming techniques allowing declarative representation of a decision making problem provide a quite attractive alternative. So, some issues regarding modelling of decision making and searching strategies development are discussed in the contribution. The results obtained are implemented in a software package supporting production flow planning in the SMEs. Illustrative example of the ILOG-based software application is provided.
Źródło:
Applied Computer Science; 2005, 1, 1; 181-200
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling Set-up Times Overlapping Two Periods in the Proportional Lot-Sizing Problem with Identical Parallel Machines
Autorzy:
Kaczmarczyk, W.
Powiązania:
https://bibliotekanauki.pl/articles/375946.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
production planning
lot-sizing and scheduling
mixed-integer programming
Opis:
This paper presents a new mixed integer programming model for the Proportional Lot-Sizing Problem (PLSP) with identical parallel machines and set-up times overlapping two periods. The proposed model assumes constant period length and explicitly calculates the distribution of set-up operations among periods. The presented results of computational experiments with standard mip methods prove that the untying set-ups from period borders enables the reduction of the total costs in optimal solutions.
Źródło:
Decision Making in Manufacturing and Services; 2013, 7, 1-2; 43-50
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A relaxation heuristic for scheduling flowshops with intermediate buffers
Autorzy:
Magiera, M.
Powiązania:
https://bibliotekanauki.pl/articles/200698.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
scheduling
heuristic
linear programming
production planning
decision making
flowshop
Opis:
The paper presents a two-level relaxation heuristic for production planning for multistage flowshop systems with intermediate buffers. The method concerns unidirectional multistage systems where tasks with respect to many various types of products are performed simultaneously. The fixed and the alternative production routes are regarded in the method. The top-level is a stage loading, i.e., allocation of tasks among the stages. The base-level is a task scheduling - allocation of tasks among the stations. The linear mathematical models of mixed integer programming are used in the method. The time criterion is used in the minimization functions - the minimal schedule is fixed. The condition that variables are to be integers has been ignored in the heuristic. The relaxed heuristic developed in such a manner enables obtaining good results in a very short time. This paper discusses the multilevel approach as the developed production scheduling method serves the purpose of solving relatively large problems. Results of computational experiments with the proposed heuristic method are presented.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 929-942
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmniejszenie udziału czasów przezbrajania w dostępnym czasie pracy maszyn
Reduction of changeover times in the available time of work machines
Autorzy:
Żywicki, K.
Chabowski, P.
Dworczak, P.
Powiązania:
https://bibliotekanauki.pl/articles/339997.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Zarządzania Produkcją
Tematy:
SMED
production planning
production scheduling
Lean Manufacturing
planowanie produkcji
elastyczność produkcji
przezbrojenie
Opis:
The article presents an analysis of three options to reduce the share of changeovers time in the available time of working machines. The first option concerns the reduction of the number and share of changeover times by grouping them in the production schedule by technologically similarity. The similarity is understood as production of products using the same settings of machines or using the same equipment. For the purpose of such approach patterns of clustering and queuing production orders in work schedules machines are formed. This enables the rapid and substantial reduction in the share of changeovers in the available working time of machine without interfering with the retooling process itself. By only knowing the structure of retooling and extract these essential elements, which by pooling and templates queuing can be avoided. In this case, increase the efficiency of the machine is achieved, however, at the same time stocks of both semi-finished and finished products increases and extends the duration of the customer contracts internal or external. The second variant is related to the analysis of the effect of shortening changeover times on the availability of machines. This approach was applied to organizational changes of retooling of machines in accordance with SMED method. This requires the involvement of all people involved in the process and examine depth of the whole process of retooling. At the same time this allows for a significant improvement in the efficiency of the machine without increasing inventory and maximizing production orders. The third analysis includes the simultaneous application of queuing pattern of production orders for individual products in the schedules of the machine and to shorten setup times. This approach allows for rapid improvement of the equipment with relatively low effort and cost.
Źródło:
Zarządzanie Przedsiębiorstwem; 2015, 18, 3; 35-40
1643-4773
Pojawia się w:
Zarządzanie Przedsiębiorstwem
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A predictive model of multi-stage production planning for fixed time orders
Autorzy:
Kozłowski, E.
Terkaj, W.
Gola, A.
Hajduk, M.
Świć, A.
Powiązania:
https://bibliotekanauki.pl/articles/407278.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
production planning
faulty parts predictability
mathematical model
linear quadratic control
Opis:
The traditional production planning model based upon a deterministic approach is well described in the literature. Due to the uncertain nature of manufacturing processes, such model can however incorrectly represent actual situations on the shop floor. This study develops a mathematical modeling framework for generating production plans in a multistage manufacturing process. The devised model takes into account the stochastic model for predicting the occurrence of faulty products. The aim of the control model is to determine the number of products which should be manufactured in each planning period to minimize both manufacturing costs and potential financial penalties for failing to fulfill the order completely.
Źródło:
Management and Production Engineering Review; 2014, 5, 3; 23-32
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hurtownia danych w planowaniu produkcji
Data warehouse in production planning
Autorzy:
Rojek, Izabela
Królikowski, Zbyszko
Marciniak, Mariola
Powiązania:
https://bibliotekanauki.pl/articles/41206459.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Kazimierza Wielkiego w Bydgoszczy
Tematy:
hurtownia danych
przedsiębiorstwo
planowanie produkcji
data warehouse
enterprise
production planning
Opis:
W artykule scharakteryzowano hurtownie danych w planowaniu produkcji. W szczególności omówiono cechy charakterystyczne planowania produkcji oraz przepływ informacji i decyzji w tym planowaniu. Zdefiniowano hurtownie danych oraz przedstawiono architektury systemów hurtowni danych. Jako przypadek szczególny omówiono możliwość zastosowania hurtowni danych w planowaniu produkcji w wybranym przedsiębiorstwie produkcyjnym. Artykuł ten jest pierwszym z cyklu, wprowadzającym do wybranej tematyki.
The article describes data warehouses in production planning. In particular, the characteristics of production planning and the flow of information and decisions in this planning were discussed. Data warehouses were defined and the architecture of data warehouse systems was presented. As a special case, the possibility of using a data warehouse in production planning in a selected production company was discussed. This article is the first in the introductory cycle to the chosen topic.
Źródło:
Studia i Materiały Informatyki Stosowanej; 2019, 1; 8-12
1689-6300
Pojawia się w:
Studia i Materiały Informatyki Stosowanej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Optimization of a Revenue Function in a Fuzzy Linear Programming Model Used for Industrial Production Planning
Autorzy:
Vasant, P.
Barsoum, N
Webb, J F
Powiązania:
https://bibliotekanauki.pl/articles/108740.pdf
Data publikacji:
2009
Wydawca:
Społeczna Akademia Nauk w Łodzi
Tematy:
production planning
Vague environment
Membership function
Fuzzy interval
Satisfactory solutions
Opis:
In this paper, the S-curve membership function methodology is used in a reallife industrial problem in which there are various products, each of which requires a certain mix of raw materials selected from a set of available raw materials. This problem occurs in the chocolate manufacturing industry where decision makers and implementers play important roles that enable successful manufacturing of the products in an uncertain environment. The analysis in this paper tries to find a solution that helps a decision maker when deciding on what to implement. This problem is considered because it can be modeled with the help of fuzzy parameters (for example, the availability of raw materials is not always certain, and so can be treated as a fuzzy parameter). With 29 constraints and 8 variables the problem here is sufficiently large for the S-curve methodology employed because this methodology is applicable to problems with as few as 1 constraint and 1 variable. A decision maker can specify which vagueness parameter is suitable for achieving a revenue which through the analysis results in an initial solution that can be implemented. From the results of this implementation the decision maker can then suggest some possible and practicable changes in fuzzy intervals for improving the revenue. Within the framework of the analysis this interactive process has to go on between the decision maker and the implementer until an optimum solution is achieved and implemented.
Źródło:
Journal of Applied Computer Science Methods; 2009, 1 No. 2; 65-83
1689-9636
Pojawia się w:
Journal of Applied Computer Science Methods
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przykład zastosowania metody automatycznego generowania modeli dla systemów symulacyjnych
Example of application of automatic generation models method for simulation systems
Autorzy:
Krenczyk, D.
Powiązania:
https://bibliotekanauki.pl/articles/408967.pdf
Data publikacji:
2011
Wydawca:
Politechnika Śląska
Tematy:
model symulacyjny
planowanie produkcji
XSLT
XML
simulation model
production planning
Opis:
W artykule przedstawiono komputerową implementację metody automatycznego generowania modeli symulacyjnych dla potrzeb symulacji komputerowej. Zastosowanie tej metody w praktyce umożliwia komputerową integrację systemów planowania produkcji z systemami symulacyjnymi. W procesie integracji wykorzystano język XML oraz techniki mapowania i transformacji danych, które zaimplementowano z wykorzystaniem języka XSLT Transformation. Przedstawiony przykład automatycznego generowania modeli wraz z procedurami sterującymi został zrealizowany z wykorzystaniem systemu weryfikacji zleceń produkcyjnych (SWZ) oraz komercyjnego systemu symulacyjnego Enterprise Dynamics.
In this paper a computer implementation of method for automatically generating simulation models for computer simulation was presented. Application of this method in practice allow computer integration of production planning systems with simulation ones. The integration uses XML, data mapping and transformation techniques, which are implemented using XSLT Transformation. An example of automatic generation of simulation models, together with control procedures, was carried out to verify the integration of production orders verification system (SWZ) and commercial Enterprise Dynamics simulation system.
Źródło:
Wybrane Problemy Inżynierskie; 2011, 2; 229-234
2083-1021
Pojawia się w:
Wybrane Problemy Inżynierskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computer aided confirming orders of configurable products - case study of data preparation
Autorzy:
Mleczko, J.
Powiązania:
https://bibliotekanauki.pl/articles/117723.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
configurable products
B2B
knowledge database
production planning
mass customization
Opis:
According to requirements of the market a great number of small companies are forced to offer a wide product variety and often to respond to the market with customized solutions. At the same time, fast delivery is often a key to win orders. Recent developments in Information Technology (IT) made available also for small companies a class of software tools called product configurators. This paper presents a method of confirming orders for configurable products, focusing on data preparation for IT systems. The method enables efficient management of a large number of product variants. The empirical evidence suggests that, in order to exploit the full potential advantages of product configuration, changes in the organization and support IT systems are needed. This paper reports a case study of the implementation of a product configuration software in small and medium (SME) manufacturing enterprises. The example of the manufacturing roller shutter was chosen.
Źródło:
Applied Computer Science; 2010, 6, 1; 42-53
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aspekty techniczne i organizacyjne wdrożenia systemu informatycznego wspomagającego planowanie produkcji
Technical and organizational aspects of the implementation of the information systems supporting production planning
Autorzy:
Milewska, E.
Powiązania:
https://bibliotekanauki.pl/articles/112812.pdf
Data publikacji:
2014
Wydawca:
STE GROUP
Tematy:
planowanie produkcji
APS
zarządzanie łańcuchem dostaw
production planning
supply chain management
Opis:
W referacie omówione zostały komponenty funkcjonalne narzędzi informatycznych klasy APS wspierające zarządzanie strumieniem przepływu materiałowego i informacyjnego firmy. Przedstawione również zostało zagadnienie adekwatności odwzorowania w systemie informatycznym działań wytwórczych przedsiębiorstwa oraz problem dostosowania działalności organizacyjnej firmy do wymagań wdrażanych narzędzi. Jako warunek umożliwiający zwiększenie elastyczności procesów produkcyjnych firmy oraz poprawy jakości wytwarzanych wyrobów, autor artykułu wskazał automatyzację przepływu informacji warunkowaną integracją użytkowanych systemów informatycznych.
The paper discusses the functional components of APS system supporting the management flows material and information in the company. he issue has also been the representation adequacy of generating activities in the information system and the problem of adapting the company's organizational activities to the requirements of the implemented tools. As a prerequisite for increasing the flexibility of manufacturing processes and improve the quality of products, the author of the article pointed to automate the flow of information, which is conditioned by the integration of information systems in use.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2014, 2 (8); 142-152
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
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