The design of green supply chains under carbon policies: A literature review of quantitative models

Carbon footprinting of products and services is getting increasing attention due to the growing emphasis on carbon related policies in many countries. As a result, many enterprises are focusing on the design of green supply chains (GSCs) with research on supply chains (SCs) focused not only on cost efficiency, but also on its environmental consequences. The review presented in this paper focuses on the implications of carbon policies on SCs. The concept of content analysis is used to retrieve and analyze the information regarding drivers (carbon policies), actors (for example, manufacturers and retailers), methodologies (mathematical modeling techniques), decision-making contexts (such as, facility location and order quantity), and emission reduction opportunities. The review shows a lack of emissions analysis of SCs that face carbon policies in different countries. The research also focuses on the design of carbon policies for emissions reduction in different operating situations. Some possible research directions are also discussed at the end of this review.A NPRP award NPRP No.5-1284-5-198 from the Qatar National Research Fund (a member of The Qatar Foundation).Scopu

Anti-AGEs Algerian vegetal extracts. Phytochemical study of Daucus aureus desf. (Apiaceae)

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On the effectiveness of emission penalties in decentralized supply chains

In recent years, the emission of harmful pollutants, such as greenhouse gases, due to industrial activities have received considerable interest from both business and scientific communities. As a result, an increasing number of voluntary and governmental initiatives that penalize emission generated by businesses have been witnessed. In this research, we examine the extent to which imposing penalties on the emission of harmful pollutants can successfully reduce overall emissions in decentralized supply chains. Using a buyer-vendor supply chain framework, we show that penalizing each firm for the emissions for which it is directly responsible can sometimes lead to higher overall supply chain emissions. We show that this phenomenon occurs because firms, in their efforts to reduce their own emissions, can make decisions that adversely impact the emissions of other firms in its supply chain. Moreover, we show that centralizing the supply chain contrary to what one may think at first glance is not always the appropriate solution to mitigate this effect. We provide some potential remedies and evaluate their relative effectiveness. We also present a detailed numerical example using realistic problem parameter values to examine the extent to which emission reduction efforts by individual firms are successful in reducing overall emissions.Scopu

New Approach to the Bioactive Natural Product Rutaecarpine and its Heterologues via the Amino-Ester/Thioimine Cyclocondensation

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A model for capacitated green vehicle routing problem with the time-varying vehicle speed and soft time windows

This paper investigates the capacitated green vehicle routing problem (GVRP) with time-varying vehicle speed and soft time windows. The GVRP is developed as a multi-objective mixed integer nonlinear programming (MINLP) model that incorporates a fuel consumption calculation algorithm. The proposed model considers the vehicle load and capacity as well as time-varying speed in order to account for traffic congestion. An improved non-dominated sorting genetic algorithm (NSGA-II) with adaptive strategies and greedy strategies is developed to solve the GVRP. The results of numerical experiments show that the consumption of fuel in a supply chain can be decreased sharply without any significant loss in customer satisfaction. The proposed NSGA-II has a better capability and efficiency than the original NSGA-II. Our experiments also indicate that the proposed model outperforms most of the best-known solutions obtained from the traditional modeling approaches. - 2019 Elsevier LtdThis research was made possible by a NPRP award NPRP No. 5-1284-5-198 from the Qatar National Research Fund (a member of The Qatar Foundation). The statements made herein are solely the responsibility of the authors. The partial contribution by Zhitao Xu in this paper was possible due to the funding provided to this author by the National Natural Science Foundation of China (Grants Nos. 71702073 and 71632008 ), the Natural Science Foundation of Jiangsu Province , China (Grant No. BK20170774 ), the Aeronautical Science Foundation of China (No. 2018ZE52057 ), the China Postdoctoral Science Foundation (Grant No. 2018M640483 ), and the Postdoctoral Preferred Foundation of Zhejiang Province , China (Grant No. zj20180024 ). Appendix A See . Tables A1 and A2Scopu

On the reactivity of thiolactam in indole series: New approaches to the bioactive natural alkaloid product Rutaecarpine, its homologues and corresponding pyridones via the tandem processes

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Stability of Hedonic Coalition Structures: Application to a Supply Chain Game

International audienceThe goal of this chapter is to provide a study of the coalition formation problem in supply chains using Hedonic cooperative games. The goal is to focus on the problems of (i) coalition structure generation, i.e., formation of coalition structures, such that agents inside a coalition coordinate their activities, but agents of different coalitions will work independently; and (ii) worth sharing, i.e., distribution of the worth generated by the coalition to its agents. We namely demonstrate that when cost-based proportional rule and equal allocation rule are used to divide the total created value, the efficient coalitions always exist and satisfy a set of desirable properties. Further; with the general results, we go deeper into a non-superadditive joint replenishment game with full truckload shipments for which we provide a polynomial algorithmic solution to generate the coalition

A new bioassay-guided fractionation from root of Bryonia dioica: A promising strategy for drug discovery

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