From Waste Pickers to Producers: An Inclusive Circular Economy Solution through Development of Cooperatives in Waste Management

The world’s global plastics waste crisis demands policy coordination and technological solutions to improve waste management systems, and organizations worldwide have created momentum around the concept of a circular economy. This paper advances a holistic, inclusive circular economy framework that aims to empower waste pickers with the following basic pillars: (1) build collaborative networks of stakeholders to enable inclusion of waste pickers; (2) establish cooperative enterprise models to integrate waste pickers into the formal economy; (3) build waste pickers’ technical skills and capacity for entrepreneurship; and (4) provide access to technologies and markets that enable waste pickers to manufacture upcycled products.

Model-Based Enterprise Continuous Improvement

The enterprise reengineering based on enterprise modelling is usually carried out within the framework of conventional projects. This leads to relatively long projects that are not compatible with a highly variable economic environment. The objective of the evolution management presented here is to use enterprise modelling and all the benefits it brings in a framework that allows for more continuous improvement than is generally observed. The proposed architecture is made up of three levels: a strategic level based on performance measurement, a tactical level that manages system migration and is based on enterprise models, and an operational level consisting of managing a portfolio of evolution projects. Together, these allow a shorter set of projects to be carried out, while remaining coherent and aligned with the company’s strategy. This approach puts enterprise modelling methods and continuous improvement/Lean management approaches into perspective, allowing complementarities and opening up interesting perspectives concerning enterprise re-engineering methods.

BUSINESS STRATEGIC DECISION MAKING TAKING INTO ACCOUNT MARKETING MODELS AND SUPPLY CHAIN

A supply chain model that includes the components of business strategic decisions is an es-sential tool for gaining a competitive advantage in today's global marketplace. Enterprise models of this type need to cover not only the supply chain but also the demand chain, since understanding the market is critical to formulating good business policy. To work effectively, marketing activities must be coordinated with other functional areas of the company. Specifically, managers must evaluate the trade-off between marketing and supply chain decisions to improve the performance of an overall metric: shareholder value. The article formu-lates a mathematical model that takes into account the main business functions. A mixed integer nonlinear programming formulation is presented for the integrated optimization of strategic supply chain decisions and marketing decisions. This allows you to more accurately form a financial model and estimate the value of the enterprise. Keywords

THE STANDARDIZATION OF QUQLITY ASSESMENT OF SPECIAL METALLURGICAL CRANES BASED ON DESIGN RISK ANALYSIS

The article critically analyzes the standards for assessing the quality of the supporting structures of special bridge metallurgical cranes. At the present stage, more than 80% of such cranes are operated outside the warranty period. The standards are aimed either at a finite number of operating cycles, or at objects of low complexity, in particular FMEA. To estimate the resource, the characteristic number, a generalized indicator of the supporting structure, is used. Risk analysis is a promising and recommended one today. The structural risk analysis is considered as an integral indicator for assessing the quality of the actual technical condition of a special metallurgical crane. The article is a continuation of a series on the study of the use of structural risk analysis for assessing the quality of structures of a metallurgical enterprise. Models of quality are given according to the following risk criteria: normal, maximum permissible, critical (catastrophic). The largest catastrophic events of a metallurgical enterprise have been studied for 70 years. The statement of the problem is formulated as follows: it is necessary to critically assess the current state of the standards and find their joint optimal parameters or put forward new requirements to create a draft of a new standard for assessing the quality of special metallurgical cranes operating outside the warranty period. An algorithm is presented that includes and refines modern standards, including FMEA. Quality is calculated as a function that changes over time, inversely proportional to the risk, taking into account the damage. The calculated values of the quality are obtained, which make it possible to relate the number of worked cycles, the acting stresses and deformations.