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Accurate cost estimation at the early stage of a construction project is a key factor in the success of most projects. Many difficulties arise when estimating the cost during the early design stage in customized furniture manufacturing. It is important to estimate the product cost in the earlier manufacturing phase. The cost estimation is related to the prediction of the cost, which commonly includes calculation of the materials, labor, sales, overhead, and other costs. Historical data of the previously manufactured products can be used in the cost estimation process of the new products. In this paper, we propose an early cost estimation approach, which is based on machine learning techniques. The experimental investigation based on the real customized furniture manufacturing data is performed, results are presented, and insights are given.

The present study explores features of policy, management and legislation (PML) that may facilitate country's sustainable development with the account of business demands in national governance. The paper discusses former attempts to measure PML related aspects from the perspective of sustainability at different levels. In order to get business strategies function in harmony with sector and national strategies in a sustainable manner, a framework interconnecting PML and business is required. There are numbers of methodologies, including sophisticated criteria systems, elaborated to measure PML in terms of sustainability. However, none of these methodologies correspond to linkages among PML sustainability and business demands. Therefore, the paper aims to construct conceptual framework requirements for sustainable governance and explain effects of such requirements on business. Results of research indicate the hierarchy of measurable and aggregated overlapping criteria for evaluation of PML domains of sustainable strategy of a country. Among the most significant parameters are political, managerial and legitimate inclusion, level of corruption, balance of evidence based policy practice, process transparency, balance of interests, open process monitoring system, etc. These criteria represent principles of public in general and business in particular inclusion, rule of law and integrated solidarity based management that should be achieved for strategically driven sustainable development. Business motivation and engagement, stable and favorable political, procedural and legal environment, long-term strategy support via regulation, and other features of PML could secure sustainability of business strategy.

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