comparing linear and circular supply chains a case study from the construction industry in the last decades green and sustainable supply chain management practices have been developed in efforts to try and reduce the negative consequences of production and consumption processes on the environment in parallel to this the circular economy discourse has been propagated in the industrial ecology and production economics literature and lately in business and practice the ideals of circular economy principles suggests that the frontiers of environmental sustainability can be pushed by emphasising the idea of transforming products in such a way that there are workable relationships between ecological systems and economic growth by arguing for these ideals to be integrated into green supply chain management theory and practice the paper uses a case study from the construction industry to demonstrate the environmental gains in terms of carbon emissions that can be achieved through some circular economy principles as against traditional linear production systems the paper therefore asserts that an integration of circular economy principles within sustainable supply chain management can provide clear advantages from an environmental point view despite some external supply chain influences and scenarios further to this emerging supply chain management challenges and market dynamics are also highlighted and discussed

the federal funds rate and the channels of monetary transmission the authors show that the interest rate on federal funds is extremely informative about future movements of real macroeconomic variables then they argue that the reason for this forecasting success is that the funds rate sensitively records shocks to the supply of bank reserves that is the funds rate is a good indicator of monetary policy actions finally using innovations to the funds rate as a measure of changes in policy the authors present evidence consistent with the view that monetary policy works at least in part through credit i e bank loans as well as through money i e bank deposits copyright 1992 by american economic association

liquidity effects and the monetary transmission mechanism several recent papers provide strong empirical support for the view that an expansionary monetary policy disturbance generates a persistent decrease in interest rates and a persistent increase in output and employment existing quantitative general equilibrium models which allow for capital accumulation are inconsistent with this view there does exist a recently developed class of general equilibrium models which can rationalize the contemporaneous response of interest rates output and employment to a money supply shock however a key shortcoming of these models is that they cannot rationalize persistent liquidity effects this paper discusses the basic frictions and mechanisms underlying this new class of models and investigates one avenue for generating persistence we argue that once a simplified version of the model in christiano and eichenbaum 1991 is modified to allow for extremely small costs of adjusting sectoral flow of funds positive money shocks generate long lasting quantitatively significant liquidity effects as well as persistent increases in aggregate economic activity

measuring the liquidity effect this paper measures the effect on the federal funds rate of an open market operation the paper deals with simultaneous equations bias by developing a proxy for the errors the federal reserve makes in forecasting the extent to which treasury operations will add or drain reserves available to private banks these errors induce fluctuations in bank reserves which have measurable consequences for the federal funds rate the paper estimates that a reduction in nonborrowed reserves of 30 million if sustained for an entire fourteen day reserve maintenance period will cause the federal funds rate to rise by ten basis points copyright 1997 by american economic association

testing the liquidity effect with equilibrium interest rate we examine the existence of liquidity effects by using the equilibrium interest rates estimated from the disequilibrium analysis instead of the observed interest rate the use of equilibrium interest rates allows us to take the growth rate in the money supply as being exogenous and circumvent the identification problem away following the traditional ar model and the method proposed by hamilton 1997 we obtain evidences showing the negative relationship between the equilibrium interest rate and the growth rate in money supply

how do scholars approach the circular economy a systematic literature review abstract circular economy ce aims to overcome the take make dispose linear pattern of production and consumption proposing a circular system in which the value of products materials and resources is maintained in the economy as long as possible in recent years there has been a proliferation of scholars publications on the topic this study presents the results of a systematic literature review exploring the state of the art of academic research on ce the paper examines the ce body of literature with a systematic approach to provide an exhaustive analysis of the phenomenon with rigorous and reproducible research criteria the revisited material consists of 565 articles collected through the web of science and scopus databases and has been evaluated using specific structural dimensions to group literature into analytical categories starting from being a concept studied in connection with industrial ecology ce has slowly acquired its independent role in academic research framed mainly into environmental sustainability related studies as a result of policies implementation academic production is mainly concentrated in china and europe employing tools and methods for modelling processes and supporting decision making for ce implementation e g life cycle assessment and material flow analysis ce studies follow three main lines of action the first aims to change the social and economic dynamics at macro and administrative level the second to support firms in circular processes implementation at micro level to spread new forms of consumption and product design the third developed at meso level discusses industrial symbiosis experiences ce is associated with a variety of concepts and waste management emerges as the most relevant sub sector ce is also strongly connected with the concept of sustainability proposing ways to operationalize its implementation at the environmental and economic level while scholars only marginally consider social and institutional implications the most explored practices are those related to cleaner production aiming at reducing environmental impact and waste production along the life cycle of a product and optimizing the performance and efficiency of processes conversely studies on ce may devote greater attention to strategies for social and institutional changes able to transform the upstream process of production and consumption considering business model strategies scholars mainly focus on studying closing material loops strategy while slowing the loops which requires a radical change of consumption and production patterns is only marginally included with respect to ce implementation this study s findings highlight ce as an evolving concept that still requires development to consolidate its definition boundaries principles and associated practices

the identification of monetary policy disturbances explaining the liquidity puzzle abstract this paper examines recent work on the identification of monetary policy disturbances its main finding is that the empirical anomalies found in the literature reflect a failure to properly address the federal reserve s policy of accommodating reserve demand shocks a new method of identifying monetary policy using nonborrowed reserves is proposed using this specification policy has a strong persistent liquidity effect regardless of subsample policy granger causes output even in the presence of interest rates explaining approximately 49 of the variance in output at a two year horizon and the residual explanatory power of interest rates for output is negligible

the vanishing liquidity effect of money on interest analysis and implications for policy this paper seeks to re examine the effects of money on interest rates the earlier literature on this topic determined fairly well the pattern of response of interest rates to changes in money growth the notable studies of cagan 1972 cagan and gandolfi 1969 and gibson 1970 served to establish the professions stylized pattern as presented in section i section ii presents new evidence on the subject and finds that the old empirical generalizations no longer hold specifically the results suggest that the initial liquidity effect of faster money growth is likely to be offset within the month following the monetary policy change sections iii and iv investigate the reasons for the changing pattern of monetary effects on interest rates and discuss the policy implications of the new pattern

does the federal reserve affect asset prices abstract the federal reserve is probably one of the institutions most closely monitored by investors this indicates that investors believe the actions of the fed have implications for asset prices to this date the trading activities of the fed in the financial markets have not been examined to see how the fed influences asset prices using daily data on open market operations omos and asset prices this study fills this void one finding of the paper is that omos granger cause both short and long term interest rates furthermore the sign of the relationship confirms the existence of the liquidity effect given that its trades represent a small portion of the market volume how the fed influences bond prices is a puzzle the only reasonable explanation is that the fed s trades have high information content judging by the impulse response paths the reaction of interest rates to open market operations is fast additionally it appears that monetary policy has a lasting impact on interest rates

interpreting the macroeconomic time series facts the effects of monetary policy existing theory and evidence on the effects of monetary policy are reviewed substantial room for disagreement among economists remains new evidence based on multivariate time series studies of several countries is presented while certain patterns in the data consistent with effective monetary policy are strikingly similar across countries others particularly the tendency of interest rate increases to predict high inflation are harder to reconcile with effective monetary policy

creating integrated business and environmental value within the context of china s circular economy and ecological modernization abstract this paper investigates the challenges and opportunities of how firms and organizations can and will be able to strike a better balance between economic growth and environmental stewardship in the context of china s emerging circular economy policy paradigm and based on ecological modernization theoretic approaches based on three company case studies in the information technology and electronic industries in china we identify and demonstrate how a blended business and environmental value can be created from adopting a sustainable supply chain management approach the adoption of a sustainable supply chain management approach is rapidly becoming a key business challenge and opportunity in china and other large emerging economies around the world where our greatest environmental management challenges currently reside and will continue to exist for many years to come the value creation framework proposed in research focuses on evaluating three case study companies who appear in various stages of an electronic industry supply chain value creation within a supply chain can provide the impetus for organizations to adopt circular economy sustainable supply chain practices for competitive reasons in addition we describe how a value proposition can be evaluated at two levels of analysis a more specific micro level and a more general meso level of analysis the four major business value dimensions include cost reduction revenue generation resiliency and legitimacy and image the initial findings are that a variety of opportunities exist for electronic firms in emerging and developing countries while results from this study provide an important scholarly foundation to develop and refine sustainable supply chain management practices in emerging and developing economies

the circular economy an interdisciplinary exploration of the concept and application in a global context there have long been calls from industry for guidance in implementing strategies for sustainable development the circular economy represents the most recent attempt to conceptualize the integration of economic activity and environmental wellbeing in a sustainable way this set of ideas has been adopted by china as the basis of their economic development included in both the 11th and the 12th five year plan escalating the concept in minds of western policymakers and ngos this paper traces the conceptualisations and origins of the circular economy tracing its meanings and exploring its antecedents in economics and ecology and discusses how the circular economy has been operationalized in business and policy the paper finds that while the circular economy places emphasis on the redesign of processes and cycling of materials which may contribute to more sustainable business models it also encapsulates tensions and limitations these include an absence of the social dimension inherent in sustainable development that limits its ethical dimensions and some unintended consequences this leads us to propose a revised definition of the circular economy as an economic model wherein planning resourcing procurement production and reprocessing are designed and managed as both process and output to maximize ecosystem functioning and human well being

cradle to cradle design creating healthy emissions a strategy for eco effective product and system design eco effectiveness and cradle to cradle design present an alternative design and production concept to the strategies of zero emission and ecoefficiency where eco efficiency and zero emission seek to reduce the unintended negative consequences of processes of production and consumption eco effectiveness is a positive agenda for the conception and production of goods and services that incorporate social economic and environmental benefit enabling triple top line growth eco effectiveness moves beyond zero emission approaches by focusing on the development of products and industrial systems that maintain or enhance the quality and productivity of materials through subsequent life cycles the concept of eco effectiveness also addresses the major shortcomings of eco efficiency approaches their inability to address the necessity for fundamental redesign of material flows their inherent antagonism towards long term economic growth and innovation and their insufficiency in addressing toxicity issues a central component of the eco effectiveness concept cradle to cradle design provides a practical design framework for creating products and industrial systems in a positive relationship with ecological health and abundance and long term economic growth against this background the transition to eco effective industrial systems is a five step process beginning with an elimination of undesirable substances and ultimately calling for a reinvention of products by reconsidering how they may optimally fulfill the need or needs for which they are actually intended while simultaneously being supportive of ecological and social systems this process necessitates the creation of an eco effective system of nutrient management to coordinate the material flows amongst actors in the product system the concept of intelligent materials pooling illustrates how such a system might take shape in reality 2006 published by elsevier ltd

a review on circular economy the expected transition to a balanced interplay of environmental and economic systems el articulo muestra un estudio en donde se proporciona una revision extensa de la literatura de las dos ultimas decadas con el proposito de captar las principales caracteristicas y perspectivas de la ce economia circular origenes principios basicos ventajas y desventajas modelado e implementacion de ce en los diferentes niveles micro meso y macro en todo el mundo los resultados demuestran que los origenes de la ce se basan principalmente en la economia ecologica y ecologia industrial

towards a national circular economy indicator system in china an evaluation and critical analysis abstract it is widely acknowledged that china s economic miracle has been achieved at the expense of its natural capital and environment in order to deal with this problem the circular economy ce has been chosen as a national policy for sustainable development national laws and regulations have been enacted to facilitate the implementation of ce and national ce demonstration projects have been initiated such that national benchmarking activities could be completed china is the first country to release nationally focused ce indicators so that objective and credible information on the status of ce implementation can be recognized these ce indicators are valuable metrics for policy and decision makers and can help achieve ce goals and outcomes this unique indicator system has not been communicated to international communities this paper aims to more broadly introduce this unique national ce indicator system china s ce efforts are first detailed with various provisions of the national indicator system a critical analysis of such an indicator system is presented we show that certain benefits can be gained but substantive revision is also needed due to the lack of a comprehensive set of sustainability indicators which should include social business indicators urban industrial symbiosis absolute material energy reduction and prevention oriented indicators concerns related to barriers on implementation are also presented in this paper the knowledge gained from chinese efforts on ce indicators are valuable to both developed and developing nations seeking to implement sustainable development measures within their regulatory policies

liquidity loanable funds and real activity abstract this paper develops a general equilibrium model of two traditional explanations of the monetary black box linking money and real activity the liquidity effect and the loanable funds effect these effects are modeled with a monetary production economy in which central bank injections of cash are funnelled into the economy through the credit market since only borrowers have direct access to the newly injected cash monetary injections cause nominal interest rates to fall if firms are borrowers then monetary injections also increase current and future real activity

the dynamic impacts of monetary policy an exercise in tentative identification it is currently popular to identify monetary policy shocks with innovations in some measure of reserves or in the federal funds rate these assumptions about the interest elasticity of the supply of or demand for reserves imply monetary policy shocks that produce dynamic responses of macroeconomic variables that are anomalous relative to traditional monetary analyses this paper tentatively identifies supply and demand shocks in the markets for reserves and m2 for the 1980s and contrasts them with results for the 1970s in the later period identified monetary policy shocks have dynamic impacts that are fully consistent with traditional analyses

in search of the liquidity effect abstract a short run negative relationship between monetary aggregates and interest rates the liquidity effect is central to discussions of monetary policy this paper searches for this empirical relationship we investigate whether the characterization of the liquidity effect is sensitive to i changes in sample period ii conditioning the correlations on past information iii assuming money growth is exogenous and iv treating monetary changes as anticipated or unanticipated the correlations change substantially in each case we conclude that the traditional analysis and modern models which rely completely on demand side behavior cannot explain the observed correlations a successful characterization of the liquidity effect requires identification of both private and policy behavior

is product durability better for environment and for economic efficiency a comparative assessment applying lca and lcc to two energy intensive products abstract the importance of product durability is becoming increasingly recognised as europe strives to move towards a circular economy where products are designed and manufactured in a way that helps save resources and minimize waste however till now no agreement has been reached on the potential benefits that increased durability of products may yield especially for energy using products there is an increasing debate on whether greater environmental and cost benefits are achieved through extending the lifetime of the product or rather by replacing it with a new more energy efficient model the aim of this work is thus to investigate if and in which conditions extended durability of energy intensive products is desirable from an environmental and an economic perspective in order to assess the environmental impact of increased durability of products life cycle assessment lca and life cycle costing lcc have been applied to perform a comparative analysis between a durable and a standard option for two different products domestic refrigerator and freezer and domestic electric oven several sensitivity analyses have been performed on purchase price cost of electricity energy efficiency according to the results of this study if from an economic point of view for the user more durable products are practically always the preferred choice this is not always the case from the environmental point of view only when the production and end of life stages have very high impacts compared to the use phase the more durable option is preferred from both an economic and an environmental point of view

has the effect of money shocks on interest rates really vanished further evidence of the liquidity effect the liquidity effect of money shocks on the short term interest rate has been an integral part of traditional macroeconomic policies and has witnessed renewed interest in recent years the paper reports contrary to some previous work extensive evidence of the effect in several non g7 countries using the single equation distributed lag garch p q estimation and the systems var estimation the liquidity effect is shown to be alive and well in a sample of nine countries and this will shed much light on policy implications

the demand and liquidity effects of monetary shocks abstract this paper examines the effect of a monetary shock in a stochastic growth model with a cash in advance constraint and a financial intermediary it explores the differences between the results of restrictions on nominal price adjustment the demand effect and restrictions on savings behavior the liquidity effect it is found that the model that produces the appropriate response to a temporary monetary shock includes both demand and liquidity effects

a reconsideration of sims evidence concerning monetarism abstract in var systems such as those of sims 1980 monetary policy surprises may be more accurately represented by interest rate than money stock innovations especially if the monetary authority uses an interest rate instrument

the effect of money shocks on interest rates in the presence of conditional heteroskedasticity most current empirical work finds no evidence that money shocks lower interest rates we show that these nonresults are mainly due to a failure to model the conditional heteroskedasticity of interest rates autoregressive conditional heteroskedasticity arch models find a significant liquidity effect where ordinary least squares ols models do not the existence of a liquidity effect is found using different models and sample periods when arch models are used in estimation but never when ols is employed

beyond sustainability transforming industrial zero valued residues into increasing economic returns abstract excessive industrialization is creating enormous economic gaps chaos and unequal societies that are approaching dangerous limits simultaneously large quantities of residues waste and ecological footprints have been created in detriment to the natural environment and the quality of life of most of the planet s population mainly in developing regions this presents most innovators with a new dilemma invest in sustainable long term projects with low economic returns or innovate in short term incremental production and negotiate the environmental harm caused by an excessive industrialization in fact a significant milestone emerges from these arguments somehow we must reverse the perverse cycle created by industrialization and transform the current ecological footprint into valuable assets for all sub systems of the biosphere a proposal has been designed to go beyond sustainability and create sustainable wealth based on the modification of the conventional growth paradigm that can be used to regenerate regional natural resources and simultaneously be economically competitive and capable of offering important social benefits to the community the proposed framework swit sustainable wealth creation based on innovation and technology has been developed to provide multiple businesses of zero value residue industrial ecology processes zries inserted into circular value ecosystems cves all managed and governed by a sustainable sharing value system for the benefit of a community several cases of the application of the sustainable wealth creation framework mainly in developing countries are described

how well does the is lm model fit postwar u s data postwar u s time series for money interest rates prices and gnp are characterized by a multivariate process driven by four exogenous disturbances those disturbances are identified so that they can be interpreted as the four main sources of fluctuations found in the is lm phillips curve model money supply money demand is and aggregate supply shocks the dynamic properties of the estimated model are analyzed and shown to match most of the stylized predictions of the model the estimated decomposition is also used to measure the relative importance of each shock to interpret some macroeconomic episodes and to study sources of permanent shocks to nominal variables

monetary policy and short term interest rates an efficient markets rational expectations approach this paper is an application of efficient markets rational expectations theory to analyze empirically the relationship of money supply growth and short term interest rates a hotly debated issue in the literature this approach has the advantage over earlier research on this subject in that it imposes a theoretical structure that allows easier interpretation of the empirical results as well as more powerful statistical tests the empirical results uniformly do not support the proposition that increases in money growth are correlated with declines in short rates the relationship between money supply growth and nominal interest rates is a hotly debated issue in the literature one view associated with keynesian structural macromodels has an increase in money growth leading at least in the short and medium runs to a decline in interest rates 2 an alternative view associated with milton friedman 6 7 indicates that interest rates might rise in response to higher money growth because there is a rise in inflationary expectations and hence a rise in interest rates through a fisher 5 effect

organization of disaster aid delivery spending your donations abstractthis article examines how different organizational structures in disaster aid delivery affect house aid quality we analyze three waves of survey data on fishermen and fishing villages in aceh indonesia following the 2004 tsunami we categorize four organizational structures based on whether and to whom donors contract aid implementation compared to bilateral contracting between donors and implementers donors that vertically integrate and do their own implementation offer the highest quality housing as rated by village heads and have fewer counts of faults such as leaky roofs and cracked walls as reported by fishermen however they shade in quality as they lose dominance as the leading aid agency in a village domestic implementers and the government agency that was responsible for significant portions of aid delivery provide significantly lower quality aid we also examine how the imposition of shared ownership the primary social agenda for boat aid agencies affects boat aid quality we

the return of the liquidity effect a study of the short run relation between money growth and interest rates in this article i use band pass filters to investigate the short run relationship between money growth and interest rates i find a negative correlation between short run movements in money growth and interest rates which i interpret as evidence that the liquidity effect dominates the anticipated inflation effect

resource duration as a managerial indicator for circular economy performance abstract this paper provides a new indicator for environmental assessment performance linked to circular economy almost all existing techniques evaluate resource use based on their burden relative to value while the central point of circular economy is to create value through material retention the existing burden orientated techniques are therefore unsuitable for guiding managers in relation to circular economy objectives this paper presents a new performance metric the longevity indicator which measures contribution to material retention based on the amount of time a resource is kept in use the measure is composed of three generic components initial lifetime earned refurbished lifetime and earned recycled lifetime management of these components can be used for decision making and performance assessment in the circular economy the example of precious metals in mobile phone handsets is used to illustrate the general application and suitability of this indicator findings show that for materials to be retained managers should encourage longer lifetime use increase product return levels for initial use and refurbished phones and select the most effective recycling processes available this paper advances performance indicators for circular economy and provides a tool which can be applied at managerial and organizational levels to measure the impact of business decisions on the longevity of precious materials

the impact of money on short term interest rates this study reviews empirical evidence from four research methods related to the impact of money on short term nominal rates the studies consistently fail to find evidence supporting the much hypothesized short term negative relationship between money and nominal rates since at least april 1975 reasons for the absence of a negative relationship include the tendency of financial markets to anticipate corrective action by the fed whenever ml deviates from targeted growth ranges and a rapid adjustment of inflationary expectations to changes in money growth

cleaner production towards a sustainable transition abstract this special volume of the journal of cleaner production was built principally upon articles submitted for the 5th international workshop advances in cleaner production held in sao paulo brazil in 2015 the 43 articles emphasize the imperative need for shifting from unsustainable production and societal patterns to sustainable ones they provide many new technological and or management related approaches to help industries governments and society to speed up the transition to sustainable patterns efforts on defining and solving problems with the special accent upon a sustainable solution for the use of raw materials and energy technological advances product and policy changes are presented and deeply discussed improved corporate management for sustainable societal transitions is discussed highlighting consumer empowerment in sponsoring implementation of innovative cleaner technologies within companies industrial sectors supply chains and countries multiple examples are provided relating the successful combination of cleaner production in policy structures illustrating on how the focused work in production sectors is delivering multiplier benefits and creating conditions to facilitate a leapfrogged path toward sd

the expectation hypothesis in emerging financial markets the case of malaysia this article deals with the expectation hypothesis of the term structure of interest rates it is argued that the rapid progress and financial market liberalization that is occurring in emerging financial markets could provide additional evidence for testing the expectation hypothesis this article employs data from the malaysian government securities market which represents one of the examples of an emerging financial market cointegration and error correction analyses show significant empirical validity for the expectation hypothesis the long and short term interest rates are shown to be cointegrated and subject to a long run equilibrium path in addition to shedding some light on the experience of emerging financial market this article explicitly identifies the process of adjustment towards the long run equilibrium for the long run the results are in favour of the long to short version of expectation hypothesis with longer term interest rates playing a greater role as equilibrium attractor howeve

toward a research agenda for policy intervention and facilitation to enhance industrial symbiosis based on a comprehensive literature review the normative question what role should governmental policy play to facilitate the development of industrial symbiosis has received considerable attention of researchers however for several reasons the effects of governmental policy actions on industrial symbiosis are still not clear this article proposes a research agenda to clarify the mechanisms of policy intervention and facilitation of industrial symbiosis based on a comprehensive review of industrial symbiosis literature focusing on how policy is conceptualized and studied the results show that existing research lacks an explicit definition of policy and employs a static conceptualization of policy that is reinforced by comparative statics research methods we argue that a dynamic process perspective is crucial to reveal the actual mechanisms through which policy intervention and facilitation affect the evolution of industrial symbiosis building on this view industrial symbiosis research is connected with insights from policy sciences and the case of policy translation of circular economy and eco industrial park in china is investigated in order to illustrate that policy is at heart a dynamic process we conclude with a research agenda proposing that the key to reveal the mechanisms is to identify the sequence of events connecting policy process and industrial symbiosis practices

a case study of a phosphorus chemical firm s application of resource efficiency and eco efficiency in industrial metabolism under circular economy abstract circular economy plays an essential and useful role in china in considering economic and ecological sustainability individual firms as the primary implements of a circular economy are facing many obstacles at present in aspects of resource and ecological efficiency therefore this study presents a set of tools to help decision makers better solve these problems and to guide resource based chemical industries in sustainable development first this study describes resource efficiency based on the sfa of a selected p chemistry firm and identifies the key potential opportunities for improvement using analysis tools and assessment tools furthermore by applying eco design and decision tools a firm level p chemical circular economic system is designed and constructed a phosphorus chemical optimization model is established and relevant successive scenarios are generated finally the corresponding feasible solutions and policy recommendations are proposed to improve economic benefit resource efficiency waste recycling rate and eco efficiency after industry design planning and technological progress the total economic benefit increases dramatically and the recycling efficiencies of accompanying resources f si i and s improve by different degrees the results demonstrate that the economic benefit of phosphorus products increases by 28 5 and p utilization efficiency correspondingly increases from 81 1 to 94 7 the comprehensive utilization efficiency of phosphor gypsum increases to 100 and the eco efficiency could be improved significantly by eliminating the phosphor gypsum stack this study demonstrates that technological progress in mineral processing and the production of associated products is the endogenic motivation to increase economic benefit and improve resource efficiency the method proposed in this paper can be applied duplicated and spread not only within the p chemical industry but also in other resource based chemical industries

towards circular economy implementation a comprehensive review in context of manufacturing industry the concept of circular economy ce is to an increasing extent treated as a solution to series of challenges such as waste generation resource scarcity and sustaining economic benefits however the concept of circularity is not of novel as such specific circumstances and motivations have stimulated ideas relevant to circularity in the past through activities such as reuse remanufacturing or recycling main objectives of this work are to provide a comprehensive review of research efforts encompassing aspects of resources scarcity waste generation and economic advantages to explore the ce landscape in the context of these three aspects especially when they are considered simultaneously based on an idea of a comprehensive ce framework propose an implementation strategy using top down and bottom up approach in a concurrent manner to fulfill this objective a comprehensive review of state of the art research is carried out to understand different ideas relevant to ce motivation for the research and context of their recurrence main contributions of this paper are a comprehensive ce framework and a practical implementation strategy for a regenerative economy and natural environment the framework emphasizes on a combined view of three main aspects i e environment resources and economic benefits it also underlines that joint support of all stakeholders is necessary in order to successfully implement the ce concept at large scale the proposed framework and implementation strategy also identify new avenues for future research and practice in the field of ce

sharing cities and sustainable consumption and production towards an integrated framework calls for a transformation towards more sustainable consumption and production scp have been intensifying as urban populations swell across the planet cities are faced with increasing pressure on infrastructure economic and ecological systems yet with their high population densities and ubiquity of information and communication technologies cities are becoming breeding grounds for a new circular economy driven by emerging and long standing sharing activities this research provides a comprehensive view of scp systems in cities by integrating and examining sharing economy activities in the context of two continuums i e scp and private public orientation based on these two analytical dimensions the paper evaluates and plots five groups of 18 sharing activities to create a sharing cities scp typology comprised by five ideal types each of these five types represents a unique form of scp activity with the potential to directly impact scp systems in the context of urban environments by enabling diversity and hybridity in the scp analysis we allow for a theoretical expansion of scp models and a new way of understanding how they may play out in cities