adjustable decisions for reducing the price of robustness of capacity expansion planning this paper proposes and implements robust optimization methodologies for making investment decisions in the capacity expansion planning cep of power systems in an uncertain environment uncertainties of fuel prices demand and transmission capacity are captured in an uncertainty set with adjustable robust optimization aro we represent all the decision variables as affine functions of multiple uncertain data this adjustability of decisions provides that the aro solution has significant less price of robustness than in traditional robust optimization ro aro models uncertainty in terms of parameter ranges called uncertainty sets an attractive attribute of utilizing uncertainty sets is that they facilitate computational tractability when simulating scenarios with multiple uncertainties we study the 40 year planning of a 5 region 13 technology us energy portfolio results show that 1 by appropriately selecting the decision rules in aro the price of robustness can be significantly reduced while maintaining the same levels of robustness and 2 the ro based models maintain high levels of robustness even under operational conditions provided by data coming from larger sizes of the uncertainty sets

enhancing socio ecological value creation through sustainable innovation 2 0 moving away from maximizing financial value capture abstract there is considerable consensus that a key to addressing the serious socio ecological crises facing the world is for organizations to implement innovations that foster sustainable development drawing from the sustainability innovation and resource based view literature this paper aims to examine the organizational capabilities associated with promoting a particular sustainable innovation conservation agriculture among small scale farmers in low income countries findings suggest that a paradigm shift is needed to what we call sustainable innovation 2 0 sustainable innovation 2 0 is associated with a double bottom line approach to sustainability that seeks to enhance positive socio ecological externalities while maintaining financially viable organizations i e financial well being is subservient to socio ecological well being we describe how sustainable innovation 2 0 is associated with i making rare sustainable innovations commonplace ii making inimitable emerging sustainable innovations transferable and iii developing institutional infrastructures and bundles of resources that counteract the non substitutability of sustainable innovations we discuss the implications of these ideas for the associated literature and for future research

from a systematic literature review to integrated definition for sustainable supply chain innovation ssci publisher elsevier articletitle from a systematic literature review to integrated definition for sustainable supply chain innovation ssci journaltitle journal of cleaner production articlelink http dx doi org 10 1016 j jclepro 2016 11 153 content type article copyright 2016 elsevier ltd all rights reserved

transmission planning criteria and their application under uncertainty planning criteria are the basis of transmission planning these criteria implicitly embody resolve conflicting objectives e g cost vs reliability quantitative methods are used to set criteria by resolving conflicting objectives once criteria are set they must be applied under uncertainty in future demand generation etc transmission plans are evaluated for hundreds of possible futures risk analysis measures robustness exposure and regret non financial hedges can reduce risk these risk concepts have a rich history but are rarely applied in transmission planning developing criteria and applying them under uncertainty are illustrated by a recent planning study for peru

marginal loss modeling in lmp calculation this paper discusses the pricing of marginal transmission network losses in the locational marginal pricing approach recently deployed in the iso new england iso ne standard market design smd project implemented by alstom s t d energy automation and information eai business the traditional loss model is studied and a new model is proposed the new model achieves more defendable and predictable market clearing results by introducing loss distribution factors to explicitly balance the consumed losses in the lossless dc power system model the distributed market slack reference is also introduced and discussed the lmp components produced by the two models are studied and compared under changes in slack reference numerical examples are presented to further compare the two models

sustainable supply chain management in emerging economies environmental turbulence institutional voids and sustainability trajectories abstract although research on supply chain management has made many valuable contributions there is a dearth of empirical evidence and theoretical reflection on the characteristics of supply chains that operate mainly in developing and emerging economies the aim of this paper is to help to fill this gap by exploring how supply chain sustainability can be implemented and managed in these settings an in depth case study of the upstream oil and gas industry supply chain in brazil was used to develop propositions about supply chains that operate in developing settings drawing from institutional theory evolutionary theory complexity theory and from the organizational learning innovation and strategy literatures this paper offers four key findings and contributions to the supply chain literature first it shows that becoming a sustainable supply chain is not a destination but a journey where trajectory and time matter given the evolutionary nature of supply chain sustainability trajectories this paper highlights that supply chains learn and evolve just as organizations do second this research indicates that although globalization is a trend natural resource based supply chains are often more geographically bounded and susceptible to local social demands than other supply chains third this paper extends the supply chain literature by arguing that supply chains face additional barriers to sustainability in developing and emerging economies which contribute to a higher degree of complexity and uncertainty due to the existence of highly turbulent business environments and institutional voids these factors in turn hinder supply chain learning and innovation and reduce the slope of supply chains sustainability trajectories finally this research contributes to the literature by claiming that due to the highly complex and uncertain business environments in these settings focal companies play an even more important role in managing the escalating ambiguity stimulating supply chain learning and promoting innovation towards supply chains enhanced sustainability performance

tax policy location choices and market structure abstract a structural model of entry and fiscal policy is presented it shows that taxation of variable production costs can increase product prices lower competition and reduce the availability of new products in small markets the model s test is based on a unique nationwide fiscal experiment we study the effects of the 1869 stamped paper tax reform act on the market for daily newspapers in the netherlands the econometric analysis uses data on when and where the newspapers existed and were introduced together with demographic census data from 1859 and 1869 the results confirm the model s predictions and show how taxation affects strategic business location decisions

the governance of sustainable socio technical transitions a quasi evolutionary model of socio technical transitions is described in which regimes face selection pressures continuously differentiated transition contexts determine the form and direction of regime change in response to these pressures the articulation of pressures and the degree to which responses are coordinated and based on resources available within the regime define the transition context four alternative contexts are described endogenous renewal re orientation of trajectories emergent transformation and purposive transitions agency and power in the governance of regime transformation are analysed power to affect change depends on regime membership the distribution of resources for change and expectations

towards sustainable consumption and production competitive pricing of modular products for green consumers abstract concern for unsustainable development has peaked and promoting and devising sustainable production and consumption is vital therefore via an analytical model we examine the impact of modularity and consumer sensitivity to sustainability on the pricing decisions of two competing firms consider an environmentally conscious green consumer who will buy one of two available horizontally differentiated products a modular product m manufactured by firm m or a standard product s manufactured by firm s firm m can take advantage of its modular production technology and product return policy for such a consumer driven demand setting we develop a model and solve to optimality a single stage non cooperative game where both firms simultaneously set their competitive prices in addition to analytical expressions for the optimal prices and the profits for both firms we provide structural results and numerical examples to render practical insights the refund rate has a strong impact on profits sensitivity of product greenness can be increased by conscientious advertising and the reusability of modular parts encourages lower pricing and higher market share we assert that modularity is a strong concept and practice in developing sustainable products and thereby in production which in turn may enhance sustainable consumption this study s findings have direct implications for reverse supply chain management and firms should take these findings into account early in the product design phase

market based generation and transmission planning with uncertainties this paper presents a stochastic coordination of generation and transmission expansion planning model in a competitive electricity market the monte carlo simulation method is applied to consider random outages of generating units and transmission lines as well as inaccuracies in the long term load forecasting the scenario reduction technique is introduced for reducing the computational burden of a large number of planning scenarios the proposed model assumes a capacity payment mechanism and a joint energy and transmission market for investors costs recovery the proposed approach simulates the decision making behavior of individual market participants and the iso it is an iterative process for simulating the interactions among gencos transcos and iso the iterative process might be terminated by the iso based on a pre specified stopping criterion the case studies illustrate the applications of proposed stochastic method in a coordinated generation and transmission planning problem when considering uncertainties

the paradox of sustainable innovation the eroom effect moore s law backwards innovation has been widely acknowledged as a key mechanism for addressing sustainable development concerns however less attention has focused on downstream commercialization challenges such as achieving increasingly complex and stringent regulatory approval such challenges may hinder the development of more sustainable technologies especially those coming from smaller or publically funded institutes as well they may obstruct the development of applications that could provide societal benefits but may only have limited commercial viability due to small market niches or applicability to customers with limited financial means we explore this apparent paradox using the concept of the eroom effect moore s law backwards i e where improved price performance due to technological advances are outweighed by increasing costs of regulatory approval and other commercialization costs we illustrate this phenomenon with two cases of publically funded institutes one developing transgenic cotton and the other lignin transformation technology that can replace petroleum based feedstocks in a number of industrial applications we discuss the unintended consequences of the eroom effect and conclude with implications for industry policy and ngos

a fuzzy linear programming enterprise input output model for optimal crisis operations in industrial complexes abstract industrial complexes may be subject to significant risk of cascading failure caused by various disruptions and emerging economies are potentially more susceptible to the impacts as less established policies are in place to deal with these issues in particular there is a need to develop adaptation strategies to ensure the resilience of industrial activities to various perturbations that may result from climate change the inherent complexity of such systems makes decision making for risk management a non trivial task that is best facilitated with the aid of mathematical models enterprise input output models have been used extensively to model production systems at different scales in this work a fuzzy linear programming enterprise input output model is developed to determine optimal adjustments in production levels of multi product systems when a crisis is induced by a loss of resource inputs the model allows for adjustments that are equitable for different decision makers that may comprise an industrial complex or a supply chain capabilities of the model are illustrated with a case study on the effect of water shortage on an aluminum production system

privatization of electricity distribution in the northeast of brazil the good the bad the ugly or the naive this paper analyzes the evolution of five electricity distribution companies in the northeast of brazil using technical and financial indicators three privatized and two public firms were analyzed between 1997 and 2008 the financial indicators are used as proxies for the capacity of the business to generate value for shareholders while the technical indicators are used as proxies for service quality provided to consumers we observed that the privatized firms had their financial indicators improved after privatization increasing the value of the firm for the shareholders however there is no evidence that privatization affected the quality of service provided to consumers

stochastic security constrained unit commitment this paper presents a stochastic model for the long term solution of security constrained unit commitment scuc the proposed approach could be used by vertically integrated utilities as well as the isos in electricity markets in this model random disturbances such as outages of generation units and transmission lines as well as load forecasting inaccuracies are modeled as scenario trees using the monte carlo simulation method for dual optimization coupling constraints among scenarios are relaxed and the optimization problem is decomposed into deterministic long term scuc subproblems for each deterministic long term scuc resource constraints represent fuel and emission constraints in the case of vertically integrated utilities and energy constraints in the case of electricity markets lagrangian relaxation is used to decompose subproblems with long term scuc into tractable short term mip based scuc subproblems without resource constraints accordingly penalty prices lagrangian multipliers are signals to coordinate the master problem and small scale subproblems computational requirements for solving scenario based optimization models depend on the number of scenarios in which the objective is to minimize the weighted average generation cost over the entire scenario tree in large scale applications the scenario reduction method is introduced for enhancing a tradeoff between calculation speed and accuracy of long term scuc solution numerical simulations indicate the effectiveness of the proposed approach for solving the stochastic security constrained unit commitment

a hard nut to crack implementing supply chain sustainability in an emerging economy abstract in the last decade sustainable supply chain management has become a key topic in the sustainability literature as well as a buzzword in industry and policy circles although research has made substantial contributions there is a lack of understanding on how focal companies operating in emerging economies can lead the implementation of sustainability into their supply chains this research connects and advances the constructs of cleaner production sustainability and supply chains by exploring a classic case of a focal company operating in an emerging economy that even facing considerable challenges has been able to succeed in transforming its entire supply chain drawing from stakeholder theory and contingency theory this research offers four key contributions to the sustainability and supply chain discourses as follows 1 it proposes an innovation centered approach to sustainable supply chain management by adapting and extending the tcos uncertainty framework 2 it suggests that the way a focal company manages and is influenced by its established network of relationships shape the evolution of the supply chain sustainability trajectories 3 it argues that supply chains are dynamic entities and should then be considered and understood through the lenses of evolutionary approaches and 4 it suggests that the implementation and management of sustainable supply chains are context specific challenges and therefore theoretical managerial and policy generalizations are difficult to be achieved

market based coordination of transmission and generation capacity planning we propose an iso model for coordinating transmission expansion planning with competitive generation capacity planning in electricity markets the purpose of the model is a holistic simulation of generation and transmission capacity expansion in the market environment the solution represents an iterative process for simulating the interactions among gencos transcos and the iso which might be terminated by the iso based on a pre specified stopping criterion the proposed model adopts a joint energy and transmission auction market and a capacity mechanism the joint auction market enables competition to occur among generation and transmission resources the capacity mechanism offers incentives for market participant investments that reflect the locational values of additional capacity transmission capacity expansion decisions are made by merchant transmission lines that recover their capacity investments through transmission marginal pricing and capacity payments transmission network security is reflected in the proposed competitive resource planning model the examples illustrate a coordinated planning of generation and transmission in restructured power systems

estimation of a model of entry in the airline industry this paper considers the effect of an airline s scale of operation at an airport on the profitability of routes flown out of that airport the empirical methodology uses the entry decisions of airlines as indicators of underlying profitability the results extend the empirical literature on airport presence by providing a new set of estimates of the determinants of city pair profitability these estimates imply that city pair profits increase in airport presence and decrease rapidly in the number of entering firms the literature on empirical models of oligopoly entry is also extended via a focus on the role of differences between firms

security constrained resource planning in electricity markets we propose a security based competitive generation resource planning model in electricity markets the objective of the model is to introduce the impact of transmission security in a multi genco generation resource planning the proposed approach is based on effective decomposition and coordination strategies lagrangian relaxation and benders decomposition are applied to decompose the original planning problem into tractable optimization subproblems locational price signal and security signal are defined for the simulation of competition among gencos and the coordination of security between gencos and the regulatory body iso the numerical examples exhibit the effectiveness of the proposed generation planning model in electricity markets

integrating cleaner production into sustainability strategies an introduction to this special volume abstract this special volume of the journal of cleaner production is built primarily upon articles submitted for the 4th international workshop advances in cleaner production held in sao paulo brazil in 2013 the 54 articles underscore the urgent need for changing from unsustainable production and societal patterns to sustainable ones they provide many new approaches to help industries governments and society to speed up the transition to sustainable patterns the authors focus on defining and solving problems with special emphasis upon sustainability strategies raw material replacement renewable energy technological developments product and policy changes the central roles of improved corporate management for sustainable societal transitions are explored with an emphasis upon stakeholder empowerment in promoting implementation of new cleaner technologies within companies industrial sectors supply chains and countries some authors improved assessment tools for environmental accounting at the biospheric scale some authors underscored the need for cooperation among governments industrial sectors and companies to accelerate the integration of cleaner production into policies and practice multiple examples of successful integration of cp in national and local policy structures exemplified how focused work in key industrial sectors is delivering multiplier benefits within and among companies and in the community at large the authors documented numerous benefits of holistic integration of local regional national and global efforts to accelerate the transition to sustainable development and societal well being

sustainable innovations in the corporate sector the empirical evidence from ibex 35 firms abstract sustainable innovation practices those which simultaneously contribute to environmental social and economic value creation have drawn increased attention from academics industry leaders and policy makers around the globe there is a general agreement that innovation is a very important part of the puzzle in achieving long term sustainability thus a critical question to be answered is what factors actually differentiate and appear to contribute to sustainable innovations si at the firm level this paper addresses the question by examining empirical evidence from the ibex 35 companies from the years 2010 2015 our results obtained from multivariate regression model indicate that the intensity of a firm s si activity is strongly and statistically significantly associated with the sector in which a given firm operates with a rising level of environmental footprint acting as a stimulant for innovation additionally firms characterized by higher net profit margins and returns on equity were also much more likely to introduce sis the findings also suggest that factors like size and age of a given company as well as level of competition in a sector in which it operates are not significant predictors for the implementation of sustainable innovations overall this study contributes to our understanding of the main characteristics of companies active in the area of si

modeling competition in transmission expansion a transmission network plays a key role in allowing access to the most efficient generators to all consumers in most cases the new transmission projects are defined by a system operator which focuses on improving the bulk system s reliability and reducing short term operating problems because electricity market participants are prevented from investing in transmission facilities that may benefit them transmission expansion may not have been sufficient to stimulate competition within the market in this paper the authors show formally through a mathematical formulation based on the lagrangian relaxation technique that the investment on transmission capacity can be a profitable activity and therefore the introduction of competition in the transmission expansion could be possible such a competitive expansion of transmission capacity would allow the participants to improve the efficiency of the electricity market

co planning of investments in transmission and merchant energy storage suitably located energy storage systems are able to collect significant revenue through spatiotemporal arbitrage in congested transmission networks however transmission capacity expansion can significantly reduce or eliminate this source of revenue investment decisions by merchant storage operators must therefore account for the consequences of potential investments in transmission capacity by central planners this paper presents a tri level model to co optimize merchant electrochemical storage siting and sizing with centralized transmission expansion planning the upper level takes the merchant storage owner s perspective and aims to maximize the lifetime profits of the storage while ensuring a given rate of return on investments the middle level optimizes centralized decisions about transmission expansion the lower level simulates market clearing the proposed model is recast as a bi level equivalent which is solved using the column and constraint generation technique a case study based on a 240 bus 448 line testbed of the western electricity coordinating council interconnection demonstrates the usefulness of the proposed tri level model

commodity taxation and imperfect competition a note on the effects of entry abstract this paper looks at the effects of allowing the number of firms to vary in seade s model of oligopoly and taxation we show that the normative and positive consequences of a specific commodity tax are affected by entry in significant ways

the life cycle of a competitive industry firm numbers first rise then later fall as an industry evolves this nonmonotonicity is explained using a competitive model in which innovation opportunities fuel entry and relative failure to innovate prompts exit equilibrium time paths for price and quantity also share features of the data the model is estimated using data from the u s automobile tire industry a particularly dramatic example of the nonmonotonicity in firm numbers

transmission and generation investment in electricity markets the effects of market splitting and network fee regimes abstract we propose an equilibrium model that allows to analyze the long run impact of the electricity market design on transmission line expansion by the regulator and investment in generation capacity by private firms in liberalized electricity markets the model incorporates investment decisions of the transmission system operator and private firms in expectation of an energy only market and cost based redispatch in different specifications we consider the cases of one vs multiple price zones market splitting and analyze different approaches to recover network cost in particular lump sum generation capacity based and energy based fees in order to compare the outcomes of our multilevel market model with a first best benchmark we also solve the corresponding integrated planner problem using two test networks we illustrate that energy only markets can lead to suboptimal locational decisions for generation capacity and thus imply excessive network expansion market splitting heals these problems only partially these results are valid for all considered types of network tariffs although investment slightly differs across those regimes

are cleaner production innovations the solution for small mining operations in poor regions the case of padua in brazil abstract mining in santo antonio de padua a city located in the underdeveloped northeast area of the rio de janeiro state in brazil is currently the most important economic activity in the region unfortunately companies lag behind technologically and use rudimentary production methods which cause serious environmental problems social implications and poor competitiveness in order to seek sustainable solutions for the padua mining region local support organizations have created initiatives to develop endogenous cleaner production innovations to enhance the industry s sustainability performance during this process some barriers for mining companies to adopt these developed technologies have emerged this research draws on the cleaner production sustainability and innovation literature and uses a qualitative research with multiple sources of evidence to understand the dynamics behind the padua mining region more specifically this research explores how initiatives to improve the sustainability performance led by local support organizations took place analyzes their outcomes i e cleaner production innovations and identifies some of the barriers to technology adoption this paper offers three key research contributions first we claim that cleaner production approaches alone cannot create sustainable mining regions in emerging and developing countries but they are definitively a step in the right direction since they provide the base for expanding the scope towards sustainability second we argue that technology cannot be understood as the panacea for sustainability because it will never represent the complete solution for companies sustainability problems third we claim that companies can face a managerial trap if they pursue enhanced sustainability performance solely through the adoption of cleaner production innovations

paradoxes and dilemmas for stakeholder responsive firms in the extractive sector lessons from the case of shell and the ogoni this paper examines some of the paradoxes and dilemmas facing firms in the extractive sector when they attempt to take on a more stakeholder responsive orientation towards issues of environmental and social responsibility we describe the case of shell and the ogoni and attempt to draw out some of the lessons of that case for more sustainable operations in the developing world we argue that firms such as shell rio tinto and others may well exhibit increasingly stakeholder responsive behaviours at the corporate strategic level however for reasons of strategy lack of competency or institutional will this increasing level of corporate responsiveness may not be mirrored effectively in dealings between subsidiary business units and their most important direct stakeholders for example local communities and in the developing world we contrast the struggles of shell to replicate its corporate stakeholder responsiveness at the local level in nigeria with the experiences of other firms that seem to have developed managerial capabilities at a somewhat deeper level throughout the firm with consequent benefits both for stakeholders and the business

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