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Tytuł:
A new design approach for milkrun-based in-plant supply in manufacturing systems
Autorzy:
Banyai, Tamas
Francuz, Adam
Powiązania:
https://bibliotekanauki.pl/articles/2142356.pdf
Data publikacji:
2022
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
manufacturing technology
milkrun-based in-plant supply optimization
heuristics
Opis:
In manufacturing technologies milkrun and water-spider-based material handling represents up-to-date solutions, especially in the case of just-in-time and just-in-sequence in-plant supply. The objective of this research work is to show how to support the design of milkrun-based in-plant supply with heuristic optimisation in manufacturing processes. This paper proposes a new optimisation approach that can determine the optimal parameters of material handling operations of manufacturing technologies focusing on milkrun-based in-plant supply of manufacturing and assembly cells and lines. After a careful systematic literature review, this paper introduces a structural model to formulate the problem of routing of milkrun trolleys in manufacturing and assembly processes. Next, a potential mathematical model is described. Numerical results demonstrate how the proposed approach supports the decision making process in milkrun design focusing on the optimisation of the required number of milkrun trolleys and the routing of them.
Źródło:
Journal of Machine Engineering; 2022, 22, 3; 91--115
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The storage location problem in a coal supply chain: background and methodological approach
Lokalizacja składów węgla w łańcuchu dostaw do odbiorcy – tło i podejście metodyczne
Autorzy:
Benalcazar, P.
Kamiński, J.
Saługa, P. W.
Powiązania:
https://bibliotekanauki.pl/articles/216353.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
coal mining company
coal trading
supply optimization
MILP
warehouse location
kopalnia węgla
handel węglem
optymalizacja dostaw
lokalizacja magazynów
Opis:
In order to achieve two main objectives: (1) reduce risk and (2) increase the expected rate of return on invested capital, coal mining and coal trading companies have looked for new ways to improve their supply chain networks. Developments in the supply chain design and analysis have helped coal mining and coal trading companies expand their businesses, but at the same time, have forced them to consolidate their assets and downsize any underused storage facilities. In the coal mining industry, the problem of consolidation and downsizing becomes much more complicated due to the variety in quality parameters (hence many coal grades) involved, locational zones and different number of market players. Furthermore, for the last decade, the storage allocation and assignment problem has received a great deal of attention within the Logistics and Operation Research (OR) area. Yet, little attention has been given to the modeling of coal supply chains and the issue of strategic supply chain planning of coal-producing and coal-trading companies. Similar to the generic warehouse consolidation problem (WCP), in specific cases of coal-producing and coal-trading companies, storage facilities that are redundant or underutilized can be eliminated without causing a negative impact on customer and service levels. In this context, this paper discusses the background of the problem and proposes a mixed-integer linear programming (MILP) model mainly intended for storage and distribution network reconfiguration of a coal-producing or trading company. The model, which can be implemented in a high-level mathematical modelling system such as GAMS or AIMMS, captures the essential methodological features of a warehouse restructuring and/or consolidation problem and can be applied in practice.
Wśród szeregu przedsięwzięć realizowanych przez przedsiębiorstwa produkujące i handlujące węglem kamiennym w kierunku osiągnięcia dwóch podstawowych celów swojej działalności, jakimi są (1) zmniejszenie ryzyka oraz (2) zwiększenie oczekiwanej stopy zwrotu z zaangażowanego kapitału, istotną rolę pełni konsekwentne usprawnianie sieci dostaw tego nośnika energii pierwotnej. Projektowanie przedmiotowego systemu oraz analiza łańcucha dostaw węgla stwarza warunki dla dalszej ekspansji spółek; zmusza jednocześnie ich zarządy do przeprowadzania konsolidacji posiadanych aktywów oraz redukowania niewykorzystanych zasobów magazynowych. W branży węglowej problem ten komplikuje się głównie ze względu na zmienność parametrów jakościowych występującego w obrocie węgla (w konsekwencji dużej liczby klas/sortymentów), różnorodną lokalizację oraz dużą liczbę uczestników rynku. Problem efektywnej alokacji powierzchni magazynowych stanowi coraz częściej poruszane zagadnienie w literaturze przedmiotu. Niestety, jak dotychczas niewystarczające zainteresowanie towarzyszyło zarówno modelowaniu łańcucha dostaw węgla jak i problemowi planowania strategicznego w spółkach węglowych i przedsiębiorstwach handlujących węglem. Poprzez analogię do ogólnego problemu konsolidacji powierzchni magazynowych można pokazać, że w przypadku przedmiotowych przedsiębiorstw niepotrzebne lub niewykorzystane kubatury składowisk mogą zostać wyeliminowane bez spowodowania negatywnych skutków dla odbiorców. W odniesieniu do powyższego, w artykule przedstawiono zwięzłą analizę tła problemu oraz zaproponowano rozwiązanie zagadnienia rekonfiguracji sieci dystrybucyjnej rozważanych przedsiębiorstw wydobywających i handlujących węglem kamiennym z wykorzystaniem podejścia programowania matematycznego liniowego całkowitoliczbowego (MILP). Podobny model (który może być zaimplementowany w systemie modelowania, takim jak GAMS lub AIMMS), uwzględnia wszystkie istotne elementy metodyczne problemu konsolidacji powierzchni magazynowych i może być skutecznie wykorzystany do celów praktycznych.
Źródło:
Gospodarka Surowcami Mineralnymi; 2017, 33, 1; 5-14
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal gas transport management taking into account reliability factor
Autorzy:
Grudz, Volodymyr
Grudz, Yaroslav
Zapukhliak, Vasyl
Chudyk, Ihor
Poberezhny, Lubomyr
Slobodyan, Nazar
Bodnar, Vitaliy
Powiązania:
https://bibliotekanauki.pl/articles/409687.pdf
Data publikacji:
2020
Wydawca:
STE GROUP
Tematy:
optimization of gas supply
reliability
simulation modeling
technological losses
Opis:
In the period of shortage of gas supply, special attention is given to reducing the supply of gas to its consumers, that is, their complete and uninterrupted gas supply. Increasing gas losses associated with technological transportation costs, in particular caused by gas flow instability and frequent changes in gas transmission network operating modes. Considering losses due to unreliability of gas pumping is one of the important tasks of gas supply optimization. The purpose of the study is to develop an optimization mathematical model that will simultaneously take into account the factors of reliability and minimum lossesIn the general case, the optimization calculations of the modes of operation of the main gas pipelines are intended to solve three main problems: determining the maximum productivity, calculating the optimal mode with a given productivity and choosing the optimal strategy, the development of the pipeline. On the basis of approaches of simulation modeling of complex systems, a multiparameter mathematical model of gas supply process optimization was developed. It is shown that a comparative analysis of the forecast and actual indicators of the operating modes of the plunger gas pumping unit shows their satisfactory convergence. The performance of the compressor operation period in the process of injection according to the forecast deviates from the actual value for the whole period of operation of the plunger gas pumping unit in 2016 by 2.98%. The optimization problem of gas pumping planning is considered, taking into account the expected losses, on the basis of which the transfer of the controlled system from the initial state to the final one is carried out by such a sequence of states that minimizes the total cost of the system evolution.
Źródło:
Management Systems in Production Engineering; 2020, 3 (28); 202-208
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody badań analitycznych jako element strategii procesu zarządzania logistycznego
Methods of analytic research as a strategy element of logistic management
Autorzy:
Dmuchowski, Robert
Powiązania:
https://bibliotekanauki.pl/articles/567350.pdf
Data publikacji:
2012
Wydawca:
Olsztyńska Szkoła Wyższa
Tematy:
Metody zarządzania
Przepływ materiałów
Przepływ dóbr
Logistyka
Elastyczność
Innowacyjność
Optymalizacja zaopatrzenia
Methods of business administration Material transfer
Product transfer
Logistics
flexibility
Innovativeness
Supply optimization
Opis:
Źródłem odkrywania i kształtowania nowych potencjałów i efektów korzyści ekonomiczno-rynkowych stało się poszukiwanie nowych metod zarządzania. Metodą pozwalającą na kompleksowe zarządzanie wszystkimi powiązanymi działaniami przepływu materiałów i dóbr od źródeł zaopatrzenia do użytkownika wyrobów gotowych jest logistyka, rozumiana jako nowoczesna koncepcja zarządzania. Stała się ona motorem racjonalizowania działań przedsiębiorstwa w obszarze zintegrowanych przepływów towarów i informacji, w których stawiane cele dążą do minimalizowania kosztów, a strategie ukierunkowane są na czas, jakość, elastyczność i innowacyjność. Istotą tak pojmowanego zarządzania logistycznego jest zaoferowanie potencjalnemu klientowi określonej ilości towarów, o odpowiedniej jakości, we właściwym czasie i miejscu. Optymalizowanie takich zadań logistyki odbywa się według dwóch podstawowych kryteriów: - maksymalizowania poziomu oferowanej obsługi logistycznej przy założonej wielkości kosztów, - minimalizowania kosztów logistycznych dla założonego poziomu obsługi. Ważnym problemem dla menadżerów firm jest nadmierna podaż towarów w stosunku do popytu, chcąc więc utrzymać odpowiedni poziom rentowności prowadzonych działań gospodarczych należy dążyć do obniżania całkowitych kosztów. Logistyka jako dziedzina nauki, która zajmuje się skupianiem w jednym miejscu organizacji wszystkich funkcji związanych z przepływem dóbr rzeczowych, utrzymaniem zapasów, jak również przekazywaniem strumieni informacji, gdzie czynnikiem determinującym te działania jest wysoki poziom satysfakcji klienta – jest nowoczesnym zarządzaniem stwarzającym możliwość obniżania ogólnych kosztów. Problemem jest jednak wskazanie metody, za pomocą której zbadać można byłoby zależności między zarządzaniem logistycznym a obniżką całkowitych kosztów, a tym samym zbadać wpływ logistyki na rozwój firmy i jej rentowność. W artykule podjęta została próba przedstawienia pewnej uniwersalnej metody pozwalającej badać zależności między działaniami logistycznymi a efektywnością funkcjonowania firmy.
Searching for the new methods of management became the source of discovering and shaping the new potential and effects of the economic and market profits. Logistics, understood in terms of modern management is the method which allows for thorough managing all material and goods traffic between the source of supply finished products users. It became the driving force of streamlining enterprise operations in the field of integrated flows of goods and information which aim at minimizing costs and the strategies are directed at time, quality, flexibility and ingenuity. The essence of the logistics in such a meaning is to offer the potential recipient a specified amount of the products with the particular quality at the right place and time. The optimization of such logistic assignments proceeds according to two basic criteria: - maximizing the level of the offered logistic service assuming the cost extent, - minimizing logistic costs for the required service level. Excessive supply in relation to demand is an important issue for the managers. Only by reducing overall costs can the appropriate level of profitability be maintained. Logistics as a discipline which deals with focusing all the functions associated with the flow of goods, maintaining the stocks and communicating the stream of information in one place, taking into account the client’s satisfaction as the major factor, is modern management enabling reduction in overall costs. A problem which appears is to point out the method which allows to examine dependence of logistic management on the reducing overall costs as well as to examine the influence of logistics on the company development and its profitability. An attempt to present a universal method of examining the influence of logistics on the effectiveness of company functioning is made in this article.
Źródło:
Warmińsko-Mazurski Kwartalnik Naukowy, Nauki Społeczne; 2012, 4; 175-188
2084-1140
Pojawia się w:
Warmińsko-Mazurski Kwartalnik Naukowy, Nauki Społeczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Genetic algorithms based approach for transhipment hub location in urban areas
Autorzy:
Szczepański, E.
Jacyna-Gołda, I.
Murawski, J.
Powiązania:
https://bibliotekanauki.pl/articles/224003.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
supply chain optimization
genetic algorithm
multi-level distribution system
facilities location problem
Vehicle Routing Problem - VRP
optymalizacja
łańcuch dostaw
algorytm genetyczny
dystrybucja wielopoziomowa
lokalizacja obiektów
Opis:
Points of distribution, sales or service are important elements of the supply chain. These are the final elements which are responsible for proper functioning of the whole cargo distribution process. Proper location of these points in the transport network is essential to ensure the effectiveness and reliability of the supply chain. The location of these points is very important also from the consumers point of view. In this paper developed method of points location was present on the example of urban transport network. The developed approach is based on the Vehicle Routing Problem in the multistage distribution systems. The proposed method uses a genetic algorithm. Article also presents a mathematical model of delivery cost as a criterion function. The article presents an example calculations which illustrating the operation of the developed method.
Źródło:
Archives of Transport; 2014, 31, 3; 73-82
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intermodal Transport and Road Transport in Poland – Results of the Study
Autorzy:
Walasek, Robert
Grodzki, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/503966.pdf
Data publikacji:
2016
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
Management
supply chain
intermodal transport
optimization
Opis:
The main objective of the text is to try to carry out the analysis with the predominant objective to try and present in realistic way the factors influencing the choice between a service realised only with the use of a road transport and intermodal transport. The author of the analysis put particular stress on the costs of the carriage service, time of its realisation and CO2 emission. The analysis also aimed at showing which of the presented technologies of service providing is more friendly to natural environment. This is due to the fact that the market for intermodal transport and road transport in Poland, knowledge of the mechanisms of price formation and the costs are still low. It is often difficult to determine the unit price of transport modes or mechanisms of shaping them. This results primarily from difficulties with the calculation of the actual cost of transport, terminal operations, management and other issues occurring in road transport and intermodal logistics functions.
Źródło:
Logistics and Transport; 2016, 31, 3; 27-36
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness of intermodal transport in Poland – results of the study
Autorzy:
Walasek, R.
Powiązania:
https://bibliotekanauki.pl/articles/409180.pdf
Data publikacji:
2017
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
management
supply chain
intermodal transport
optimization
Opis:
Increasing demand for transport of goods exerts negative influence on the environment. Therefore most European countries divide realization of transportation of commodities between various transport branches by using so-called intermodal transport. Therefore it seems reasonable to carry out an analysis with the predominant objective to try and present in realistic way the factors influencing the choice between a service realized only with the use of a road transport and intermodal transport. The author of the analysis put particular stress on the costs of the carriage service, time of its realization and CO2 emission. The analysis also aimed at showing which of the presented technologies of service providing is more friendly to natural environment. The results obtained from the comparison of intermodal and road transport for a given distance enable stating that effectiveness of railway-road transport is influenced by 22% lower internal costs than the ones of road transport and by lower emission of carbon dioxide.
Źródło:
Research in Logistics & Production; 2017, 7, 2; 159-170
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Supply Chain Optimization and Competitiveness of an Enterprise - Results of the Study
Autorzy:
Walasek, R.
Powiązania:
https://bibliotekanauki.pl/articles/409262.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
management
supply chain
competitive advantage
optimization
Opis:
The main objective of the study is to characterize the influence of key aspects associated with supply chain management on building a competitive advantage by enterprises operating in Lodz region. The study presents the influence of Supply Chain Management (SCM) on the supply chain optimization process for all links of the chain. The paper also introduces reasoning and presents results of an empirical research referring directly to the influence of supply chain optimization in enterprises on the dimension of their market competitiveness.
Źródło:
Research in Logistics & Production; 2016, 6, 2; 177-189
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Joint allocation and transportation problem in supply network optimisation
Autorzy:
Filcek, G.
Powiązania:
https://bibliotekanauki.pl/articles/407403.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
supply networks
optimization
convex optimization
heuristic algorithms
decision support systems
Opis:
The paper concerns joint allocation and transportation as an optimization problem in selected supply networks. The network consists of a set of suppliers of the raw material, a set of production units and a set of product receivers. The raw material is treated as fast perishing good like vegetables or fruits. The production units are described by time models. In the optimization process, the time of the production and cost of the transportation is taken into account. The objective function is in general non-convex function of raw material allocation and transportation plans of the raw material and the product. To solve the problem considered, exact and heuristic algorithms have been developed and presented. To solve convex problems, solver Lingo developed by Lindo systems is proposed. The idea of a computer decision supported system integrating all presented algorithms is presented as well as four numerical examples illustrating some properties of the assumed supply network model.
Źródło:
Management and Production Engineering Review; 2012, 3, 3; 3-10
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:
Maintenance Optimization for Transport Vehicles in a Supply Chain
Autorzy:
Rezg, Nidhal
Sofiene, Dellagi
Zied, Hajej
Powiązania:
https://bibliotekanauki.pl/articles/504640.pdf
Data publikacji:
2014
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
maintenance policy
supply chain
proportional hazard
optimization
Opis:
In this paper, we are interested in determining a maintenance policy with an optimal cost to enable the company to generate significant profits, often the means of transport travelled different paths, they are characterized by the distance they covered; however each distance has an effect on the operating characteristics of means of delivery. The objective of this paper is twofold: It aims both to introduce the model of supply chain and specify distances, and codify the use of it in the proportional hazard model, later a maintenance policy was presented which takes into consideration the types of paths travelled by the means of delivery.
Źródło:
Logistics and Transport; 2014, 24, 4; 7-14
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neutrosophic compromise programming approach for multiobjective nonlinear transportation problem with supply and demand following the exponential distribution
Autorzy:
Adhami, Ahmad Yusuf
Faizan, Mohd
M, Anas
Powiązania:
https://bibliotekanauki.pl/articles/2175845.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
fuzzy approach
multiobjective optimization
supply chain
transportation
uncertainty
Opis:
Decision-making is a tedious and complex process. In the present competitive scenario, any incorrect decision may excessively harm an organization. Therefore, the parameters involved in the decision-making process should be looked into carefully as they may not always be of a deterministic nature. In the present study, a multiobjective nonlinear transportation problem is formulated, wherein the parameters involved in the objective functions are assumed to be fuzzy and both supply and demand are stochastic. Supply and demand are assumed to follow the exponential distribution. After converting the problem into an equivalent deterministic form, the multiobjective problem is solved using a neutrosophic compromise programming approach. A comparative study indicates that the proposed approach provides the best compromise solution, which is significantly better than the one obtained using the fuzzy programming approach.
Źródło:
Operations Research and Decisions; 2022, 32, 3; 1--15
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated Supply Chain Optimization Model Using Mixed Integer Linear Programming
Autorzy:
Sitek, Paweł
Wikarek, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/503926.pdf
Data publikacji:
2013
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
discrete optimization
supply chain management
multimodal transportation
decision support
Opis:
This article presents an integrated approach to optimize the different functions in a supply chain on strategic tactical and operational levels. The integrated supply chain model has been formulated as a cost minimization problem in the form of MILP (Mixed Integer Linear Programming). The costs of production, transport, distribution and environmental protection were adopted as optimization criteria. Timing, volume, capacity and mode of transport were also taken into account. The model was implemented in the LINGO package. The implementation model and the numerical tests are presented and discussed. The numerical experiments were carried out using sample data to show the possibilities of practical decision support and optimization of the supply chain.
Źródło:
Logistics and Transport; 2013, 20, 4; 37-48
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization programming tools supporting supply chain management
Autorzy:
Szkutnik-Rogoż, Joanna
Małachowski, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/27311443.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
mathematical programming
optimization
supply chain
programowanie matematyczne
optymalizacja
łańcuch dostaw
Opis:
The issue of transportation is a particular type of mathematical programming that facilitates searching for and determining an optimal distribution network, considering the set of suppliers and recipients. This paper uses a numerical example to present a solution to a transport problem utilizing classical computation methods, i.e., the northwest corner, the least cost in a matrix, and the VAM approximation method. The objective of the paper was to develop tools in the form of algorithms that would then be implemented in three various computing environments (R, GNU Octave, and Matlab) that allow us to optimize transport costs within an assumed supply network. The model involved determining decision variables and indicating limiting conditions. Furthermore, the authors interpreted and visualized the obtained results. The implementation of the proposed solution enables users to determine an optimal transport plan for individually defined criteria.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 3; art. no. e145570
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przejazdy po drogach leśnych i publicznych przy dostawach wielkowymiarowego drewna sosnowego do tartaku
Driving on forest and public roads in deliveries of large-size Scots pine wood to sawmill
Autorzy:
Tymendorf, L.
Trzciński, G.
Powiązania:
https://bibliotekanauki.pl/articles/979086.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
wood supply chain
wood deliveries
transport optimization
backhauling
transport stages
Opis:
The aim of the presented research was to characterize the driving related to the deliveries of large−size Scots pine wood and to determine the factors affecting its structure and distance. Operation was divided in to: driving for load on a public and forest road, forest ride between loading points, as well as driving with saw logs on a forest and public road. Data on the distance traveled on forest and public roads (empty and with load), as well as, the number of loading places was determined on the data from drivers. In total, 1509 randomly selected deliveries carried out over a period of twelve months from 40 forest districts were analyzed. Investigated transports delivered 44,336 m3 of large−size pine round wood to the sawmill. Most deliveries were made within 100 km from the plant. Within this radius, 83.87% of drives for load and 75.35% drives with load were completed. The average distance for driving for load on a public road was 60.6 km, with the range from 0.5 to 205 km. The average driving distance with load to the sawmill was 70 km, the shortest distance 2 km and the longest – 238 km. Driving distances on forest roads, for and with load, was on the similar level of 3.5 and 3.4 km, respectively. The average distance in the forest, between loading points was 3.1 km, with SD=2.9 km, maximum 16 km. The largest share, 51.4% of total delivery distance, was related to driving with saw logs on a public road and depends on how many places in the forest the wood was picked up. In 36% of all deliveries, saw logs were loaded from two or more places, which involved additional drive on forest roads at the distance of 1,652 km. The analysis did not show statistically significant differences between driving depending on the season of the year. The stable wood supply during 12 months period, shows that large stocks of round wood to secure productions during sensitive periods (winter), is not needed.
Źródło:
Sylwan; 2020, 164, 08; 651-662
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 41

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