124 research outputs found

    Veggies 4U's Energy Pricing Dilemma

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    Veggies 4U is a young and dynamic family-run greenhouse: Lucy and her husband run the business with the help of a small group of friends and colleagues who serve on the company's Board of Directors. Lucy is preparing a report to the Board to recommend a natural gas supply contract for the next three years. The company has received four different contract offers, ranging from a simple forward contract, to a maximum cost contract with a price floor. The case focuses on the pricing and risk management opportunities offered by an integrated North American natural gas market. Lucy has to assess the different supply contract offers received by the company and to reverse engineer them in order to benchmark their cost with that of potential synthetic alternatives Veggies 4U could build. Once Lucy has decided what to recommend, she has to sell it to the Board.Energy price risk, Natural gas supply contract, Financial engineering, Risk, Demand and Price Analysis, Risk and Uncertainty,

    Enterprise Risk Management at Top Agro Inc.

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    Top Agro (TA - not its real name) is a small crop protection start-up operating in the European Union. In a relatively short period of time TA has been able to secure a reasonable profit margin and build a solid niche in the Italian crop protection market. The driving force in their success is the professional expertise of the two owners, their knowledge of the domestic market, and the highly flexible business model they’ve developed. Chemicals are sourced either in the Far East via a Hong Kong based commercial partner or purchased directly from other European domestic suppliers. TA is responsible for the formulation and packaging of the finished product, which is then distributed in the domestic Italian market. Although TA is now profitable, further sales growth is unlikely. One of the owners is convinced that significant benefits may be obtained by identifying and controlling the key risks that TA is exposed to, in particular by reducing the price risk in their international supply chain. This case has been classroom tested at the senior undergraduate and MBA level with good results. It works well as opening case for an eMBA course on managing price risk, as it provides an opportunity to map the risk “opportunity set†via the ERM challenging students to reason and set intervention priorities by focusing on currency exchange rates and risk management as the most immediate and promising action.supply chain, enterprise risk management, currency risk management, crop protection., Crop Production/Industries, Demand and Price Analysis, Productivity Analysis, Risk and Uncertainty,

    Parma Agrifood Research Management Knowledge Network: PARMa KN

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    The case focuses on the proposed development of the Parma Agrifood Research Management Knowledge Network (PARMa KN). The PARMa KN is intended to be a global network of leading professionals drawn from academia, industry, and the public sector. The proposal is for the group to be funded by the City of Parma and corporate, foundation, and individual donors. Its main objective would be to build value for society through the development of cutting-edge research, educational programs, and service activities for firms in the food and agribusiness sector. It is hoped that the new foundation will bring international expertise to food and agribusiness firms in Parma to help them to expand and remain globally competitive.consulting, trade association, industry association, SWOT, industry research, Industrial Organization, International Relations/Trade, Research Methods/ Statistical Methods, Q10, Q17,

    PKN: The Challenge of Building a Virtual Knowledge Network to Address Food and Agribusiness Management Research, Service and Training Needs

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    The Parma Agribusiness Research & Management Knowledge Network, PARMaKN (PKN in the article) is an innovative public-private partnership, focused on the development of advanced food and agribusiness management research and service activities. PKN was launched in Parma in July 2007 by Societa’ Parmense per gli Insediamenti Produttivi (SPIP), the economic development corporation of the City of Parma. This paper presents the vision, mission and medium term activity plan of PKN.Agribusiness, Agricultural and Food Policy, Food Consumption/Nutrition/Food Safety, Industrial Organization,

    RISE, a Tool for Holistic Sustainability Assessment at the Farm Level

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    Sustainability must be adopted as a key principle in global markets. Numerous studies have been conducted to evaluate the degree of sustainability on a national and local level. However, only little information for single farm assessment is currently available. The present paper introduces a tool, the "Response-Inducing Sustainability Evaluation" (RISE), which allows an easy assessment at the farm level. It is system-oriented and offers a holistic approach for advice, education and planning. The model covers ecological, economical and social aspects by defining 12 indicators for Energy, Water, Soil, Biodiversity, Emission Potential, Plant Protection, Waste and Residues, Cash Flow, Farm Income, Investments, Local Economy and Social Situation. For each indicator a "State" (S) and a "Driving force" (D) are determined from direct measures of a number of parameters. The "State" indicates the current condition of the specific indicator, higher values are more desirable, and the "Driving force" is a measure of the estimated pressure the farming system places on the specific indicator; in this case lower values are desirable. D and S are standardized on a 0 to 100 scale; a perfect indicator would be identified by S=100 and D=0, whereas significant challenges would be captured by a combination of a low S and a high D. The degree of sustainability (DS) of each indicator is defined as DS= (S-D), bound by construction to the -100 to +100 range. The overall results are summarized and displayed in a sustainability polygon. In addition to this polygon a strength/weakness profile is determined for 1) the stability of the social, economic and ecological framework, 2) farmer's risk awareness and risk management measures, 3) grey energy in machines, buildings and external inputs, 4) animal health and welfare. RISE has been tested and used to evaluate very different farms in Brazil, Canada, China and Switzerland. Results are considered relevant with regard to the objective stated. Further testing, adaptation and fine-tuning is under way. A similar model covering the supply chain to the factory gate is also under development.Sustainability assessment, Sustainability at the farm and crop level, Indicators of sustainability, Driving Force - State - Response (DSR) - model, Environmental Economics and Policy, Farm Management,

    Comparative LCA of concrete with recycled aggregates: a circular economy mindset in Europe

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    [EN] Purpose Construction and demolition waste (C&DW) is the largest waste stream in the European Union (EU) and all over the world. Proper management of C&DW and recycled materials¿including the correct handling of hazardous waste¿can have major benefits in terms of sustainability and the quality of life. The Waste Framework Directive 2008/98/EC aims to have 70% of C&DW recycled by 2020. However, except for a few EU countries, only about 50% of C&DW is currently being recycled. In the present research, the environmental impact of concrete with recycled aggregates and with geopolymer mixtures is analysed. The aim of the present research is to propose a comparative LCA of concrete with recycled aggregates in the context of European politics. Methods Life cycle assessment (LCA) methodology is applied using Simapro© software. A cradle to grave analysis is carried out. The results are analysed based on the database Ecoinvent 3.3 and Impact 2002+. Results Results show that the concrete with 25% recycled aggregates is the best solution from an environmental point of view. Furthermore, geopolymer mixtures could be a valid alternative to reduce the phenomenon of ¿global warming¿; however, the production of sodium silicate and sodium hydroxide has a great environmental impact. Conclusions A possible future implementation of the present study is certainly to carry out an overall assessment and to determine the most cost-effective option among the different competing alternatives through the life cycle cost analysis.Colangelo, F.; Gómez-Navarro, T.; Farina, I.; Petrillo, A. (2020). Comparative LCA of concrete with recycled aggregates: a circular economy mindset in Europe. International Journal of Life Cycle Assessment. 25(9):1790-1804. https://doi.org/10.1007/s11367-020-01798-6S17901804259Akhtar A, Sarmah (2018) Construction and demolition waste generation and properties of recycled aggregate concrete: a global perspective. 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J Clean Prod 184:815–825Braga AM, Silvestre JD, de Brito J (2017) Compared environmental and economic impact from cradle to gate of concrete with natural and recycled coarse aggregates. J Clean Prod 162:529–543Chen C, Habert G, Bouzidi Y, Jullien A, Ventura A (2010) LCA allocation procedure used as an incitative method for waste recycling: an application to mineral additions in concrete. Res Con Rec 54(12):1231–1240Chen Z, Gu H, Bergman RD, Liang S (2020) Comparative life-cycle assessment of a high-rise mass timber building with an equivalent reinforced concrete alternative using the Athena impact estimator for buildings. Sustainability (Switzerland) 12(11):4708Colangelo F, Cioffi R (2017) Mechanical properties and durability of mortar containing fine fraction of demolition wastes produced by selective demolition in South Italy. Comp Part B: Eng 115:43–50Colangelo F, Petrillo A, Cioffi R, Borrelli C, Forcina A (2018a) Life cycle assessment of recycled concretes: a case study in southern Italy. Sci Total Env 615:1506–1517Colangelo F, Forcina A, Farina I, Petrillo A (2018b) Life cycle assessment (LCA) of different kinds of concrete containing waste for sustainable construction. Buildings 8(5):70Colangelo F, Navarro TG, Petrillo A, Farina I, Cioffi R (2020) Life-cycle impact of concrete with recycled materials. 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Res Con Rec 136:166–178Gluth, G.J.G., Arbi, K., Bernal, S.A., Bondar, D., Castel, A., Chithiraputhiran, S., Dehghan, A., Dombrowski-Daube, K., Dubey, A., Ducman, V., Peterson, K., Pipilikaki, P., Valcke, S.L.A., Ye, G., Hajimohammadi, A., van Deventer, J.S.J., 2017. Characterisation of one-part geopolymer binders made from fly ash. Waste Biom Val, 8(1), pp. 225–233Gomes R, Silvestre JD, de Brito J (2020) Environmental, economic and energy life cycle assessment “from cradle to cradle” (3E-C2C) of flat roofs. Journal of Building Engineering 32:101436ISO 14040 (2006) Environmental management life cycle assessment. Principles and Framework. ISO, GenevaISO 14044 (2006) Environmental management. Life cycle assessment. Requirements and Guidelines. ISO, GenevaJafary Nasab T, Monavari SM, Jozi SA, Majedi H (2020) Assessment of carbon footprint in the construction phase of high-rise constructions in Tehran. 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Res Cons Recycling 150:104407Zhang C, Hu M, Dong L, Gebremariam A, Mirand-Xicotencatl B, Di Maio F, Tukker A (2019) Eco-efficiency assessment of technological innovations in high-grade concrete recycling. Res Cons Recycling 149:649–66

    The Gaia spectrophotometric standard stars survey - III. Short-term variability monitoring

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    We present the results of the short-term constancy monitoring of candidate Gaia Spectrophotometric Standard Stars (SPSS). We obtained time series of typically 1.24 h - with sampling periods from 1-3 min to a few hours, depending on the case - to monitor the constancy of our candidate SPSS down to 10 mmag, as required for the calibration of Gaia photometric data. We monitored 162 out of a total of 212 SPSS candidates. The observing campaign started in 2006 and finished in 2015, using 143 observing nights on nine different instruments covering both hemispheres. Using differential photometry techniques, we built light curves with a typical precision of 4 mmag, depending on the data quality. As a result of our constancy assessment, 150 SPSS candidates were validated against short-term variability, and only 12 were rejected because of variability including some widely used flux standards such as BD+174708, SA 105-448, 1740346, and HD 37725

    On the Distance of the Globular Cluster M4 (NGC 6121) Using RR Lyrae Stars. II. Mid-infrared Period-luminosity Relations

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    New mid-infrared (MIR) period-luminosity (PL) relations are presented for RR Lyræ variables in the globular cluster M4 (NGC 6121). Accurate photometry was obtained for 37 RR Lyræ variables using observations from the Infrared Array Camera on board the Spitzer Space Telescope. The dispersion of M4's PL relations is 0.056, and the uncertainty in the slope is 0.11 mag. Additionally, we established calibrated PL relations at 3.6 and 4.5 μm using published Hubble Space Telescope geometric parallaxes of five Galactic RR Lyræ stars. The resulting band-averaged distance modulus for M4 is μ =11.399+/- 0.007({stat}) ± 0.080({syst}) ± 0.015({cal})+/- 0.020({ext}). The systematic uncertainty will be greatly reduced when parallaxes of more stars become available from the GAIA mission. Optical and infrared period-color (PC) relations are also presented, and the lack of an MIR PC relation suggests that RR Lyræ stars are not affected by CO absorption in the 4.5 μm band

    The polymorphism L412F in TLR3 inhibits autophagy and is a marker of severe COVID-19 in males

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    The polymorphism L412F in TLR3 has been associated with several infectious diseases. However, the mechanism underlying this association is still unexplored. Here, we show that the L412F polymorphism in TLR3 is a marker of severity in COVID-19. This association increases in the sub-cohort of males. Impaired macroautophagy/autophagy and reduced TNF/TNFα production was demonstrated in HEK293 cells transfected with TLR3L412F-encoding plasmid and stimulated with specific agonist poly(I:C). A statistically significant reduced survival at 28 days was shown in L412F COVID-19 patients treated with the autophagy-inhibitor hydroxychloroquine (p = 0.038). An increased frequency of autoimmune disorders such as co-morbidity was found in L412F COVID-19 males with specific class II HLA haplotypes prone to autoantigen presentation. Our analyses indicate that L412F polymorphism makes males at risk of severe COVID-19 and provides a rationale for reinterpreting clinical trials considering autophagy pathways. Abbreviations: AP: autophagosome; AUC: area under the curve; BafA1: bafilomycin A1; COVID-19: coronavirus disease-2019; HCQ: hydroxychloroquine; RAP: rapamycin; ROC: receiver operating characteristic; SARS-CoV-2: severe acute respiratory syndrome coronavirus 2; TLR: toll like receptor; TNF/TNF-α: tumor necrosis factor
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