1,720,961 research outputs found
La scelta dell’ordinamento produttivo aziendale in condizioni di incertezza: il caso delle colture geneticamente modificate
No full textIn all cases of investments of irreversible or quasi/irreversible and/or postponable type, the traditional NPV marshallian criteria of investment analysis is likely to be unfit. In fact, in all such cases, a valuable option of waiting arises which should be properly considered by the instrument of “ real option analysis”. The GM crops, differently from the traditional ones, have many of the characteristics of irreversible investments and in any case their adoption can indeed be postponed. In this work we shortly present the method of “real option analysis” and apply it to the issue of adopting the GM technology at farm level. We show that, differently from the traditional NPV analysis when the delaying option is valued the GMO option is unlikely to be economically convenien
Un'analisi sulle politiche di sostegno agli investimenti in agricoltura in un contesto di incertezza
No full textThe new CAP reform, abolishing the fair price policy, has created a new and riskier environment for farmers, especially as far as investment decisions are concerned. The traditional NPV Marshallian criteria of investment analysis is likely to be unfit, when farmers face irreversible or quasi-irreversible or delayable investments. In fact, in all such cases a valuable option of waiting arises. This delaying option when properly valued by the instrument of “real option analysis” can be so relevant to overturn the conclusions on the investment profitability reached by the traditional NPV analysis. Naturally this fact has profound implications as far as the definition of investment promoting policies are concerned. In this work, after summarizing the real option approach, we use it to shed some light upon the way uncertainty will effect the quasi-irreversible investment decision at farm level. We show that, differently from the traditional NPV criteria, the impact of investment subsidies turns out to be greatly diminished when the real option approach is correctly utilized instead
Agricultural Business Strategy: Theory and Methods for Cost-Effectiveness Investment Analysis in Agro-Energy Production
Full text linkEnvironmental change is currently considered a high-priority matter, both in the scientific community at large and at the institutional level of national and international governing bodies. Actually, an all-out effort seeks to investigate and advance viable solutions to deal with the global emergencies regarding to anthropic climate change; increasing demands for renewable sources of energy, technological innovation and energy-saving systems, ecological and environmental sustainability of natural resources and land. At the core of this worldwide endeavour an increasingly significant role seems destined to the agricultural sector and to agro-energy production systems for the potential benefits in terms of production costs. In fact, the interest in unconventional and low-impact energy sources mandates thorough investigation not only into the advantages, in terms of availability and affordability, but also into the impact on the environment and the quality of the landscape, as well as the aspects regarding the overall measures that need be adopted so as to enable the supply on the market. Given this scenario, the wide-ranging agro-energy question would be incomplete without extensive economic sustainability analyses, serving as operational decision-support tools to measure cost-effectiveness regarding investments in agro-energy production and its use
Modeling sequential production: The migratory beekeeper case
No full textThis paper formalizes a bio-economic model of migratory beekeeping activities, during the annual production cycle, so as to discern the optimal sequence of foraging sites for migratory beekeepers; it then proceeds to empirically verify the model via a case study. The model assumes that the apiary farm produces three marketable outputs under conditions of certainty with disjunctive resources at the sites. In particular, honey, commercial pollination services and nucleus colonies are produced sequentially at foraging sites throughout the year. The model determines a migratory beekeeperâs revenues, variable costs, gross income from each sequence of foraging sites under the constraint that the total time allocated to the foraging sites be less than or equal to the annual production cycle duration. The bio-economic model allows sequential choices and jointness in foraging sites to be tested, so as to ascertain whether the various stages in the sequential production process are independent of each other. Jointness in foraging sites can arise with regard to variable costs, revenues or both simultaneously
L'AGRICOLTURA ITALIANA. SFIDE E PROSPETTIVE DI UN SETTORE VITALE PER L'ECONOMIA DELLA NAZIONE
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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