Maximum residual levels of pesticides and public health: best friends or faux amis?

The purpose of this article is to analyze the relation between public health and the regulations of Maximum Residue Limit (MRL) of pesticides. Many authors underline the role of trade protectionism in fixing these limits, whereas these regulations should be intended for public health protection. We first establish the link between the MRL for a given chemical in plant products and its level of toxicity. In order to perform this analysis, we cross the FAS USDA MRL database and the classification of the long‐term toxicological effects (LTE) for active substances provided by SAgE pesticide. We then compute a synthetic and polyvalent tool, namely, “Health Score,” which provides a first overview of the link between LTE and MRL by country. Then this score is regressed in a logit model in order to identify the relationship between the countries’ Health Score and the socioeconomic and political characteristics of such areas. Results highlight the importance of public health expenditures in determining the settings of MRL toward stricter levels.     

Documenting the unauthorized: Political responses to unauthorized immigration

Cultural prejudice rather than self interest is the conventional wisdom for why voters respond negatively to immigration. Using a new measure of unauthorized immigrants based on self‐reported invalid social security numbers, we show that voters’ responses are more nuanced than mere prejudice against minorities. Using county level data from the U.S. state of Georgia, we find that voters in counties with above median levels of unauthorized workers are more likely to support the Republican Party. We also find that wealthier counties and wealthier voters are most likely to respond negatively to the unauthorized. Our evidence warns against arguments that depict opposition to immigration as motivated solely by xenophobia and cultural fears among lower income Whites.     

Business at the fingertips of consumers: a scale for measuring resale motivations in online settings

Our current understanding of what motivates consumers to resell second-hand products online is limited. This article lays out the development and validation of an online resale motivation (ORM) scale based on three studies involving 1119 respondents. Study 1 presents the ORM scale development process and the resulting multidimensional construct, including the protester, economic, generative, recreational, practical and social facets of motivation. Study 2 replicates the scale and investigates its predictive value, demonstrating that the ORM scale successfully predicts online resale frequency. Study 3 examines the mediating role of ORM on the relationship between planned resale intentions and online resale behaviour. The findings show that there is no direct link between a consumer’s intention to resell an item prior to its purchase and the frequency with which they resell online. Rather, consumers who more frequently resell online items that they acquired with the intention of reselling do so because they perceive positive economic, practical and recreational outcomes associated with online reselling.     

The role of entrepreneurship education as a predictor of university students’ entrepreneurial intention

Using Ajzen’s theory of planned behavior and Shapero’s entrepreneurial event model as well as entrepreneurial cognition theory, we attempt to identify the relationship between entrepreneurship education, prior entrepreneurial exposure, perceived desirability and feasibility, and entrepreneurial intentions (EI) for university students. The data were collected from a survey of ten universities; we received 494 effective responses. We used probit estimation to show that perceived desirability significantly impacts EI whereas there is no significant impact from perceived feasibility. There is a significant negative impact from exposure (which is surprising) and a significant positive impact from entrepreneurship education. Males and people from technological universities and/or backgrounds have higher EI than females and people from other universities and backgrounds. There are also significant positive interactive effects by gender, university type, and study major on the relationship between entrepreneurship education and EI.     

Robust control and central banking behaviour

This paper seeks to explain the recent behaviour of the two main central banks in the recent financial crisis, applying a robust control tool through a Neo-Keynesian monetary policy model. The direct forbearer of this paper is the Giordani and Söderlind (2004) study. It begins with the origin, purpose and theoretical grounds of robust control, indicating that it is one way to face model uncertainty, as an alternative to the Bayesian approach. In the middle section, we seek to obtain the course of the model's main variables: interest rates, inflation and output. The model constructor also wants the participating agents to have the same doubts that he has regarding its validity; therefore, robust control is considered as a “fine-tuning” of the rational expectations approach. The impulse-response functions are obtained, with the monetary authority acting as a Stackelberg-type leader, affected by a perturbation on the supply side. The two relevant equilibria are obtained and compared in robust control with dynamic economy (the reference equilibrium and the worst possible case equilibrium) with that obtained when operating with rational expectations. The alternative course for the reference model set forth in the paper by Dennis (2008) is also analysed. We mainly find that the different results depend on the behaviour of the law of motion of the state variables, specifically the shadow prices that influence the private sector's expectations. Lastly, the paper relates the recent monetary policy performance when facing the financial crisis that began in the summer of 2007.     

Value creation by knowledge‐based ecosystems: evidence from a field study

A growing number of research and development‐driven companies are located in knowledge‐based ecosystems. Value creation by these ecosystems draws on the dynamics of single firms (interacting and partnering) as well as the ecosystem at large. Drawing on a field study of a Dutch high‐tech campus, two key sources of value creation are identified: (1) facilitation of the innovation process for individual companies and (2) creation of an innovation community. Furthermore, the coevolution of the ecosystem's business model with firm‐level business models explains why technology‐based firms join, stay in, or leave the ecosystem at a certain point in time. A remarkable finding is that ecosystem managers have to deliberately facilitate exit routes for companies that no longer fit the ecosystem in order to enhance and reinforce its business model. As such, this study suggests a dynamic capability perspective on knowledge‐based ecosystems that need to develop a business model at the ecosystem level to create sufficient innovative capacity and entrepreneurial fitness.     

Impacts of predation by the Eurasian round goby (Neogobius melanostomus) on molluscs in the upper St. Lawrence River

An invasive Eurasian fish, the round goby Neogobius melanostomus, has recently spread from the Great Lakes into the St. Lawrence River. We quantified prey preferences of this benthivore and determined whether its predatory impacts on molluscs in the river are similar to those in the Great Lakes. We measured the size structure of gastropods and dreissenid mussels at 13 St. Lawrence River sites where round goby densities ranged from 0 to 6 m^− 2. For four of these sites, data were available for multiple years before and after invasion. Contrary to studies in the Great Lakes, there were no consistent effects of round goby density on the size structure of dreissenids, although there was an ontogenetic diet shift toward dreissenids. However, the abundance and richness of small gastropods (≤ 14 mm) was negatively correlated with round goby density across all sites, and declined over time at three of four sites sampled before and after invasion. Median gastropod size also declined across sites with increasing round goby density. Gastropods (as well as chironomid larvae, caddisfly larvae, and ostracods) were consistently among the most preferred prey items consumed by gobies, whereas dreissenids (as well as leeches and freshwater mites) were consistently avoided. These results indicate the major role of the round goby in structuring gastropod populations in the St. Lawrence River, and highlight large-scale spatial variation in its predatory impact on dreissenid populations.     

The influence of the media on the history of business success

All the main indicators related to entrepreneurship have increased since 2011 (Global Entrepreneurship Monitor 2018, 2019). The positive perception of this phenomenon was boosted by the socio-economic situation and by a specific agent of the entrepreneurial ecosystem: the economic specialized media. The aim of this study is to demonstrate that the economic media has given their readers an excessively positive discourse, linked to success and to the lack of analysis of the entrepreneurial phenomenon. The sample is defined in terms of a linguistic corpus comprising content related to entrepreneurship drawn from the digital editions of the three most important Spanish economic newspapers for the period 2010 to 2018. A systematic standardize assignment of categories to the contents and an analysis of the relationships between those categories has been carried out (Riffe et al. 2019). These categories are ‘number of contents’, ‘information treatment’, ‘percentage of success stories’, ‘percentage of content analysis’ and ‘sources’. The results reveal a clear intention of the media to offer an overly optimistic perception of the entrepreneurial phenomenon considering the survival rate of the projects mentioned. There is evidence for a selection of information linked to success, a lack of follow-up of the stories and a poor preparation by the media, which lacks specialized journalists and, above all, replicates agency contents. This study provides empirical evidence that helps to identify the optimistic perception imposed by the media for the entrepreneurial phenomenon. This perception, together with other relevant facts, contribute to the creation of an ‘information bubble’ (Cervantes-Zacarés 2019) during the period under study.