Supply Chain Modeled as a Metabolic Pathway

Mustafin, Almaz; Kantarbayeva, Aliya

doi:10.3846/mma.2018.028

Cited by 5 publications

(3 citation statements)

References 41 publications

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“…The analogy of IM refers to physical processes and resource flows between raw materials and energy. Production factors, such as labor and machinery, act as catalytic enzymes in the conversion of inputs into products [72]. Methodologies are employed to handle the complexity of IM, including temporal dynamics and the quantification of energy and material flows, as well as the embodied energy in facilities and maintenance [73].…”

Section: Metabolic Pathwaysmentioning

confidence: 99%

Industrial Metabolism: A Multilevel Characterization for Designing Sustainable Manufacturing Systems

Martín-Gómez,

Ávila-Gutiérrez,

Lama-Ruiz

et al. 2023

Machines

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The development of industrial manufacturing systems has significant implications for society and the environment, often resulting in substantial waste generation. To address this issue and promote sustainable growth, the concept of industrial metabolism offers a promising approach. Industrial metabolism facilitates the circularity of energy and material flows within the industrial environment, contributing to the establishment of more sustainable manufacturing systems. This paper provides a comprehensive analysis of industrial metabolism, highlighting its analogy with natural systems and categorizing models based on their application at different levels: macro (national or regional), meso (eco-industrial park), and micro (manufacturing plant or line). The analysis emphasizes the importance of considering the trophic network and evaluating the efficiency, cyclicality, toxicity, and resilience of industrial metabolic pathways. The proposed characterization of bioinspired industrial metabolism is positioned within the industrial environment. This positioning facilitates the design of manufacturing systems that emphasize circularity, drawing on frameworks applied at different levels within industrial metabolism.

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Section: Metabolic Pathwaysmentioning

confidence: 99%

Industrial Metabolism: A Multilevel Characterization for Designing Sustainable Manufacturing Systems

Martín-Gómez,

Ávila-Gutiérrez,

Lama-Ruiz

et al. 2023

Machines

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“…Based on this idea, it can be shown (ref. for the details [ 67 ]) that virtually any converging, multi-resource, single-product supply chain of arbitrary length must possess the property of Leontief technology: its output will be solely determined by the slowest input. Assuming the input (upstream) stage corresponding to i th resource to operate by the generic mechanism ( 15 ), an uptake rate of i th resource will be described by the famous Michaelis–-Menten equation [ 68 ] for substrate uptake rate in enzymatic reaction: Here S i is the per firm availability of i th resource, is the maximum uptake rate of i th resource by a firm of j th type, and K ij is the half-saturation constant —the value of S i when , i. e. the resource stock supporting an uptake rate one-half the maximum rate.…”

Section: The Modelmentioning

confidence: 99%

Section: The Modelmentioning

confidence: 99%

Resource competition and technological diversity

Mustafin

Kantarbayeva²

2021

PLoS ONE

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The work develops and investigates a mathematical model for evolution of the technological structure of an economic system where different technologies compete for the common essential resources. The model is represented by a system of consumer–resource rate equations. Consumers are technologies formalized as populations of weakly differentiated firms producing a similar commodity with like average output. Firms are characterized by the Leontief–Liebig production function in stock-flow representation. Firms self-replicate with a rate proportional to production output of the respective technology and dissolve with a constant rate of decay. The resources are supplied to the system from outside and consumed by concerned technologies; the unutilized resource amounts are removed elsewhere. The inverse of a per firm break-even resource availability is proposed to serve as a measure for competitiveness towards a given resource. The necessary conditions for coexistence of different technologies are derived, according to which each contender must be a superior competitor for one specific resource and an inferior competitor for the others. The model yields a version of the principle of competitive exclusion: in a steady state, the number of competing technologies cannot exceed the number of limiting resources. Competitive outcomes (either dominance or coexistence) in the general system of multiple technologies feeding on multiple essential resources are shown to be predictable from knowledge of the resource-dependent consumption and growth rates of each technological population taken alone. The proposed model of exploitative competition with explicit resource dynamics enables more profound insight into the patterns of technological change as opposed to conventional mainstream models of innovation diffusion.

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On the development of mathematical models for the reliability evaluation of aircraft operation in combat conditions

et al. 2021

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The authors of this study propose a methodological approach to modelling the reliability evaluation of aircraft operation in combat conditions. When developing recommendations on operational and strategic requirements for promising aircraft, a very important aspect is the elicitation of the requirements for their reliability, namely no-failure operation. Reliability as a parameter of any equipment should be set in the technical specifications for development together with other operational requirements in the form of reasonable quantitative indicators – reliability standards. The establishment of specific reliability standards stimulates its growth and creates the basis for rational design, taking into account the requirements of reliable operation. The analysis showed that different models can be used to simulate aircraft reliability. In this case, for example, the final values of mean time to failure (MTTF) would be different. The test results show that the methods and mathematical models used to substantiate the values of time and probability of trouble-free operation of aircraft do not fully correspond to the actual processes of changing their state during the use in the military. This is confirmed by a significant discrepancy in the values of reliability indicators implemented in practice. This was due to the fact that the acquainted mathematical models of aircraft reliability do not take into account the combat conditions in which they are supposed to operate. In addition, the reliability indicators used do not take into account possible changes (decrease) in these indicators during the period of aircraft operation. In general, the shortcomings inherent in the methods and mathematical models currently used to describe the aircraft reliability reduce the accuracy of the results obtained, and also do not quite adequately reflect the features of the corresponding process. When using different models, the cost of time to failure differs significantly. The more factors are taken into account, the greater the operating time to failure will be. This means that when designing aircraft, it is necessary to set the value of this indicator greater than indicated in the form. Taking into account additional factors complicates the model, but at the same time makes it more accurate.

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Supply Chain Modeled as a Metabolic Pathway

Cited by 5 publications

References 41 publications

Industrial Metabolism: A Multilevel Characterization for Designing Sustainable Manufacturing Systems

Industrial Metabolism: A Multilevel Characterization for Designing Sustainable Manufacturing Systems

Resource competition and technological diversity

On the development of mathematical models for the reliability evaluation of aircraft operation in combat conditions

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