Substitution between water and other agricultural inputs: Implications for water conservation in a River Basin context

Substitution of irrigation water with other agricultural inputs could be an important means to conserve water in the face of growing pressures on water resources from both nonagricultural water demands and environmental water requirements. This paper discusses the potential of such substitution through an empirical analysis based on a multiple-input crop production function at the field and farm scales complemented with a numerical modeling exercise at the basin scale. Results from the crop production function analysis show that under both crop yield and net profit maximization, water is a substitute to other crop inputs for high-value crops, and is a complement to water for low-valued crops. At the basin scale, an integrated economic-hydrologic river basin model is used to analyze the role of other factors in crop input substitution, including the spatial connections among water sources and demands, hydro-agronomic conditions, and institutional settings for water allocation. Results show that in the case study area, the Maipo River basin in Chile, where water is very scarce, moving from the current, input-constrained, situation to full optimization of water resources leads to an increase in all crop inputs, including water. In that case, 301 million m³ of additional water use results in additional net profits of USD 11 million. However, if the water fee is raised by a factor of eight while overall basin irrigation profits are maintained at the original, baseline level, a reduction of water withdrawals by 326 million m³ is traded off with costs of USD 43.2 million for other inputs. Irrigation districts with a high share of low-value crops have a low potential for substituting water with other crop inputs. Therefore, investments for water substitution should also be kept low in these areas.     

Theories of behavior in principal-agent relationships with hidden action

In a laboratory experiment, we investigate behavior in a principal-agent situation with moral hazard. We evaluate the predictive success of two theories. One is the standard agency theory, which assumes that the agent will accept any contract offer that satisfies his participation constraint, typically requiring zero expected utility. The other is the “fair-offer” theory suggested by Keser and Willinger [2000. Principals’ principles when agents’ actions are hidden. International Journal of Industrial Organization 18 (1), 163-185], which requires that the principal provide full insurance against losses to the agent and leave him a share of at most 50% of the generated surplus. The treatment variable of our experiment is the cost of effort. As effort costs increase, expected net surplus of a contract decreases. We observe that fair-offer theory generally predicts observed contract offers better than standard agency theory. However, the predictive success of the fair-offer theory decreases, while the one of standard agency theory increases with decreasing expected net surplus.     

Yet another look at temporal aggregation in diffusion models of first-time purchase

This paper gives yet another look at the impact of temporal aggregation on the parameter estimates for the familiar Bass diffusion model. It is shown that aggregation leads to larger values of the innovation parameter p and that it is leads to smaller values of the imitation parameter q, at least in theory. The last finding is in contrast with the results in Technological Forecasting and Social Change [51 (1996) 265]. We use simulation experiments to substantiate our results.     

Dollarization and the inflation threshold

Abstract.  Empirical evidence suggests non-linearity in the impact of inflation on financial intermediation and real activity. Evidence also suggests that high inflation affects financial intermediation through the substitution of dollars 'under the mattress' for savings in domestic banks. We model an economy where inflation and real activity are positively related at low levels of inflation. However, when the inflation rate exceeds a threshold, agents substitute dollars for deposits issued by domestic banks, reducing the scale of financial intermediation and investment. As a consequence, at high levels of inflation, capital stock and output become negatively related to the inflation rate.     

Patents and the performance of technology firms: Evidence from initial public offerings in Germany

The objective of this study is to analyze the relationship between innovation and performance for German firms that went public at the “Neuer Markt” during the period from 1997 to 2002. In the empirical analysis we investigate in particular whether initial public offerings (IPOs) with more or higher quality patents outperformed IPOs with lower quality or no patented technology. For this we measure the impact of patents on underpricing and long-run performance and explain the magnitude of these valuation effects with the Fama–French value and growth factors, with patent-specific variables such as the number of IPC-classes, family size, the number of backward and forward citations, as well as with industry variables. The empirical evidence suggests that patents are a reliable indicator for the success and the short- and long-run performance of start-up technology firms that went public and that the valuation effects are more pronounced for higher quality patents.

Das organisationspsychologische Fairness-Konstrukt im Marketing

Zusammenfassung  Wir geben einen überblick, wie Fairness als zentrales sozial- und organisationspsychologisches Konstrukt in der aktuellen Marketingforschung rezipiert wird. In der Konstruktgeschichte haben sich vier Dimensionen von Fairness (distributive, prozedurale, informationale, interpersonale) ausdifferenziert. In einer bibliometrischen Analyse strukturieren wir den gegenw?rtigen Fairnessdiskurs im Marketing. Anhand von 205 internationalen Zeitschriftenartikeln identifizieren wir vier relevante Themenkomplexe: Beschwerdemanagement, Preisfairness, intraorganisationale Fairness im Marketing-Kontext sowie Fairness und Vertrauen in Gesch?ftsbeziehungen. Diese Subdiskurse verdeutlichen, auf welchen Themengebieten die Marketingforschung durch Rezeption des Fairness-Konstrukts bereits bereichert wurde. Zugleich lassen sie aber weitere Differenzierungsm?glichkeiten erkennen.

Evidence That the Presence of a Half-Sibling Negatively Impacts a Child's Personal Development

A bstract .   This paper examines the relationship between a child's family structure and his or her development. While most prior research in this area has defined a child's family structure according to his or her relationship to adults in the household, this study examines the relationship of the child to not only adults but also other children in the household. We provide evidence that half-siblings brought into the household from previous relationships affect the well-being of children born into a subsequent marriage who live with both of their biological parents. Stepchildren and children living with both biological parents exhibited more behavior problems and scored worse on reading achievement tests when half-siblings were present. In contrast, stepchildren living without half-siblings in the home fared no worse than biological children without half-siblings. These results not only highlight a previously overlooked at-risk group (children living with half-siblings brought into the household from a parent's prior relationship), but they also illustrate the potential ramifications of classifying children into family structures based on their individual relationship with the householders, rather than based on the family types. The authors illustrate the relevance of these findings to current policy-making decisions regarding marriage promotion policies and child support legislation.     

The residential real estate market in Italy: a spatio-temporal analysis

Quality & Quantity - Real estate market follows generally the evolution of the economic cycles. In Italy, it has been characterized by a period of expansion (2000–2006) and a period of...     

Government Performance and Chief Executives’ Intangible Assets: Motives,Networking, and/or Capacity?

This study explores the impact of chief executives’ intangible assets – motives, capacity and networks – on government performance. Three main hypotheses suggesting a direct relationship between these assets and performance are tested using data from municipalities in El Salvador, where the chief executive is the elected mayor. The research involved an in-field survey of 135 Salvadorian mayors (out of 262) and data collected from national agencies, focusing on two dimensions of municipal performance: service delivery (electricity and running water) and expansion of revenue (with national grants). After controlling for municipal and constituent-level factors, findings indicate that the chief executive’s capacity (specifically mayoral expertise) is positively correlated to municipal delivery of electricity and running water; intrinsic motivation is linked to expansion of water services; and municipalities whose chief executives are nationally networked tend to receive more grant monies. This study contributes to the literature on government performance by assessing the role of chief executives’ intangible assets in the developing context of a relatively newly established democracy in Latin America.