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Author: search.filters.author.Kota, SrinivasHas files: No

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Now showing 1 - 10 of 29
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    Towards a green Agri-food supply chain through ANP and ELECTRE I
    (Emerald, 2023-06) Kota, Srinivas
    This research aims to comprehensively analyse the Agri-food supply chain, by identifying the barriers, and considering effective pathways towards a green supply chain. To the best of our knowledge, in the research area of supply chain, the majority of the research is oriented towards the evaluation of barriers and pathways or drivers to the implementation of green supply chain management in the manufacturing industry. The field of Agri-food is among the sectors of concern due to the quantum and basic necessity of the industry.
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    A designer workbench with real-time capture and reuse of information on product evolution and rationale
    (ICED, 2005) Kota, Srinivas
    Product Life Cycle Management promises management of all intellectual assets generated for all life cycle phases of a product [1]. This includes supporting capture and structure of information generated about an evolving product during the PD process [1]. Many structures for product information [3, 4, 5, 6] and rationale information [7, 8] have been suggested, and some turned into a tool, e.g. [7, 8]. However, a practical tool for automated capture and structure of product information including rationale information without interrupting the working of the designer, especially as a product evolves through the PD process, is yet to be developed. The framework reported here has been developed by analysing the proceedings from design experiments and literature to capture, segregate and store the information generated in product design without interrupting designer. The main features of the framework are implemented into the preliminary version of a software tool and evaluated for the ease of use and reuse for designers and re-designers (re-users of rationale). The main functions currently supported are: creation and modification of a three-dimensional assembly, exploring the details of a version tree and product structure, and, exploring the events via video/audio clips attached to the version tree.
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    Use of dfe methodologies and tools - Major barriers and challenges
    (ICED, 2007) Kota, Srinivas
    Products make substantial impact on environment. Product to waste mass generated through out the product lifecycle can be as high as 1:20. Design for Environment (DfE) is an approach to design where all the environmental impacts of a product are considered over the entire life cycle of a product. Early stages of product development are the key for this because if we know the environmental impacts of potential designs while designing, we can make changes to these designs then and there so as to reduce their environmental impacts [1, 2]. However, unlike cost and performance, use of environmental criteria and DfE is far from part of mainstream designing [3]. Most DfE tools are conceptual in nature, and there is very little adoption of these in industry. Methods like [4] are useful for specific phases of the lifecycle of a product. However, during product development there is a need to consider the whole lifecycle rather than a single phase of the product
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    Product development platform for real-time capture and reuse of evolving product information
    (Inder Science, 2007-12) Kota, Srinivas
    Product life cycle management promises management of all intellectual assets generated for all life cycle stages of a product. In engineering, over 75% of design activity comprises case-based design ? reuse of previous design knowledge to address a new design problem. This means that rationale capture and reuse are critical in design and redesign projects. The goal of this paper is to report empirical study of designing carried out to understand the needs and constraints for design rationale capture, and to detail the concept, implementation and preliminary evaluation of an unobtrusive, real-time design rationale capture framework.
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    Development of a platform for supporting design for environment
    (ICED, 2007) Kota, Srinivas
    Individual guidelines often exist for DfE but these are not integrated with design tools. There is no comprehensive method that can be useful for the whole life cycle of a product in various stages of its design. Few tools exist that could aid iterative changes to a design required in product development and there is a need for an integrated methodology and computational support for designers. Life Cycle Assessment (LCA) [1] is arguably the most promising and scientifically defendable method for estimating environmental impacts of a product during its lifecycle [2]. Like DfE guidelines, LCA tools are not well integrated with design process and tools. Consequently, there is a need for an LCA tool integrated into the natural design process that can be applied to early as well as detailed design stages
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    Development of a method for estimating uncertainty in evaluation of environmental impacts during design
    (ICED, 2007-08) Kota, Srinivas
    Life Cycle Assessment (LCA) is currently the most promising and scientifically defendable technique for estimating environmental impacts of a product during its lifecycle. Currently, detailed LCA is critically dependent on high volumes of product specific data, time consuming, often unaffordable and used in the detailed stages of design. Current approximate LCA methods are either incomplete, inaccurate or require prior knowledge of what data is important. There is substantial uncertainty involved in the environmental impact calculations in LCA. Literature suggests that impact estimation results must be accompanied by an estimation of its uncertainty or imprecision, without which the decisions taken could be misleading. During development of a product, there is often a lack of accurate information about its structure, lifecycle stages, and related environmental impact information. As information about the product lifecycle continues to evolve during development, the assessment method should be such that it incorporates the different levels of abstraction about product information. A key result to be presented in this paper is a preliminary method developed using interval algebra and probabilistic theory taking product structure and lifecycle uncertainties into account. This method helps in estimating impact values of a product proposal in the earlier stages of design by providing an uncertainty value in terms of confidence on the result calculated, with the intention of supporting design decision making
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    A method for evaluation of product lifecycle alternatives under uncertainty
    (ICED, 2009) Kota, Srinivas
    In each stage of product development, we need to take decisions, by evaluating multiple product alternatives based on multiple criteria. Classical evaluation methods like weighted objectives method assumes certainty about information available during product development. However, designers often must evaluate under uncertainty. Often the likely performance, cost or environmental impacts of a product proposal could be estimated only with certain confidence, which may vary from one proposal to another. In such situations, the classical approaches to evaluation can give misleading results. There is a need for a method that can aid in decision making by supporting quantitative comparison of alternatives to identify the most promising alternative, under uncertain information about the alternatives. A method called confidence weighted objectives method is developed to compare the whole life cycle of product proposals using multiple evaluation criteria under various levels of uncertainty with non crisp values. It estimates the overall worth of proposal and confidence on the estimate, enabling deferment of decision making when decisions cannot be made using current information available.
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    A method for Estimating the Degree of Uncertainty With Respect to Life Cycle Assessment During Design
    (ASME, 2010-09) Kota, Srinivas
    Life cycle assessment (LCA) is used to estimate a product’s environmental impact. Using LCA during the earlier stages of design may produce erroneous results since information available on the product’s lifecycle is typically incomplete at these stages. The resulting uncertainty must be accounted for in the decision-making process. This paper proposes a method for estimating the environmental impact of a product’s life cycle and the associated degree of uncertainty of that impact using information generated during the design process. Total impact is estimated based on aggregation of individual product life cycle processes impacts. Uncertainty estimation is based on assessing the mismatch between the information required and the information available about the product life cycle in each uncertainty category, as well as their integration. The method is evaluated using pre-defined scenarios with varying uncertainty.
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    Sustainability through remanufacturing in India: a case study on mobile handsets
    (Elsevier, 2011-10) Kota, Srinivas
    Remanufacturing activities in India are still in nascent stages. However, the substantial growth of Indian economy, coupled with serious issues of population and environmental burden demands a radical shift in market strategies and legislations. The scattered and inefficient product recovery methods prevalent in India are unable to cope with increasing environmental and economic burden on the society – remanufacturing seems to be a promising strategy to explore for these. Our study investigated from a user’s context the opportunity of establishing remanufacturing as a formal activity, answering the fundamental questions of whether remanufactured products would be accepted by Indian consumers and how these will fit into the Indian market. The study of the Indian mobile phone market eco-system showed how mobile phones currently move through the value chain, and the importance of the grey and used phone markets in this movement. A prescriptive model has been proposed which utilizes the usage patterns of different consumer groups to create a self-sustainable demand-supply system, potentially complementing frameworks such as the Automotive Remanufacturing Decision-Making Framework (RDMF).
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    ACLODS – A Holistic Framework for Environmentally Friendly Product Lifecycle Design
    (Springer, 2021-01) Kota, Srinivas
    Design for Environment (DfE) is an approach to design where all the environmental impacts of a product are considered over the entire life cycle of a product. Most DfE tools are conceptual in nature, and there is little adoption of these in industry. This chapter discusses the development of a holistic framework that should help in both generation and evaluation of environmentally friendly product life cycle proposals. The overall approach is to investigate literature to analyse the existing guidelines, methods, tools and methodologies for environmentally friendly product design, in order to identify the requirements for a holistic framework for design to reduce the environmental impact of a product lifecycle proposal. An ideal framework to satisfy these requirements is proposed.