Prenatal care and birthweight in Mexico

We estimate the marginal impact of prenatal care (PNC) on birth outcomes in Mexico using nationally representative data on about 14 million births from 2009 to 2014. Given the possible self-selection into PNC, we attempt to identify the causal impact of PNC on birth outcomes by estimating an instrumental variable model. We find positive impacts of increased prenatal visits on birthweight (BW), length and apgar score of the newborn. Moreover, the impacts of PNC on birth outcomes differ by mother’s education, development level of the municipality where the mother resides and BW distribution. We also find suggestive evidence that PNC visits affect birth outcomes through the reduction in pre-term births.     

Development of a technological competition model in the presence of network effects from the modified law of Metcalfe

The objective of this paper is to propose a new model of competence in presence of network effects. We will introduce some modifications in the Lotka-Volterra model, in order to solve its deficiencies. The main improvement is to introduce a modification of Metcalfe’s Law, what allow us to reflect the effect of congestion externalities. The model’s validation, developed by numerical simulation, confirms that its behaviour is quite similar to that observed in real markets.

Why European Banks Are Undercapitalized and What Should Be Done About It

Major European banks are significantly undercapitalized as compared to large American banks, and, more importantly, as compared to the capital levels they would need to survive another severe financial crisis. Bank capital shortfalls in Italy, Spain, Germany, France and the United Kingdom, in particular, are largely the consequence of European bank regulations that: (1) apply static risk weights to assets like mortgages and sovereign debt; (2) fail to require an overall market‐based capital ratio that is high enough to enable banks to survive a severe financial crisis; (3) fail to get banks to promptly write down their impaired assets to market value; (4) subject banks to weak stress tests that can create a false impression of capital adequacy; and (5) fail to compel banks to retain sufficient earnings and to raise sufficient capital externally to eliminate capital shortfalls promptly, all apparently out of fear that being tougher might cause investors and customers to lose confidence in the banks. This article summarizes important recent independent bank stress testing that has quantified the capital shortfalls in European banks. The recent highly publicized regulatory interventions to resolve failing European banks were inevitable due to these shortfalls. The authors recommend steps European bank regulators should take to address the problem and to eliminate the risk of serious capital shortfalls. In the absence of such steps, bank depositors, customers, and security holders should be prepared to expect further unwelcome surprises as the risks inherent in allowing undercapitalized banks to operate will continue to materialize in more bank failures.     

Overview of Collaborative Entrepreneurship: An Integrated Approach Between Business Decisions and Negotiations

In recent years, the complex, turbulent and changing environment in which firms operate has greatly intensified. A new era of continuous innovation has emerged in which knowledge is the key asset, and whose exploitation determines success for many firms. In this context, it is generally accepted that effective knowledge management depends heavily on a company’s ability to collaborate, both inside (Collective Entrepreneurship) and outside (Collaborative Entrepreneurship) the organization. Collaboration enables a firm to be entrepreneurial and continuously innovative by exploring new markets. Continuous innovation and market exploration are the building blocks of collaboration. Therefore, the aim of this paper is to develop the concept of Collaborative Entrepreneurship, linking the most relevant issues with the concept of Collective Entrepreneurship, from a preliminary integrative approach. From this approach, three elementary dimensions are emphasized: strategy, structure and management philosophy. Strategy refers to the shared common project among collaboration partners; Structure concerns the flexibility of structures and adaptation to environmental changes; and Management Philosophy is about trust. Also, networks within the firm and among firms could form the basis of Collaborative Entrepreneurship in the context of negotiation and decision processes. A brief overview of the content of each of the articles included in this special issue on Collaborative entrepreneurship is presented following this article.     

Entrepreneurship and risk-taking in a post-disaster scenario

International Entrepreneurship and Management Journal - Family firms’ risk-taking behaviour is central to these firms’ ability to recover from major loses after a natural disaster....     

Does the educational management model matter? New evidence from a quasiexperimental approach

A growing literature has appeared in the last 2 decades with the aim to explore if the way in which publicly funded private schools are managed (a ver     

Robust prediction of domain compositions from uncertain data using isometric logratio transformations in a penalized multivariate Fay–Herriot model

Assessing regional population compositions is an important task in many research fields. Small area estimation with generalized linear mixed models marks a powerful tool for this purpose. However, the method has limitations in practice. When the data are subject to measurement errors, small area models produce inefficient or biased results since they cannot account for data uncertainty. This is particularly problematic for composition prediction, since generalized linear mixed models often rely on approximate likelihood inference. Obtained predictions are not reliable. We propose a robust multivariate Fay–Herriot model to solve these issues. It combines compositional data analysis with robust optimization theory. The nonlinear estimation of compositions is restated as a linear problem through isometric logratio transformations. Robust model parameter estimation is performed via penalized maximum likelihood. A robust best predictor is derived. Simulations are conducted to demonstrate the effectiveness of the approach. An application to alcohol consumption in Germany is provided.     

Growth and Jobs in Developing Economies: Trends and Cycles

Open Economies Review - This paper investigates the relationship between economic growth and job creation in developing economies with a focus on low and lower middle-income countries along two...     

How intrafirm intermediary salespeople connect sales to marketing and product development

This research reveals the ways that salespeople manage intrafirm relationships by acting as intermediaries, connecting intrafirm members that would otherwise be unconnected. Using a two-study, multimethod design, the authors establish that (1) salespeople act as representative intermediaries positioned between peers in sales and those in marketing and product development; (2) the effects of representative positions with marketing and product development on performance are non-linear; and (3) selling-related knowledge moderates representative effects on performance. Representative salespeople act as the exclusive connection between a peer salesperson and a non-sales contact (marketing or product development), controlling non-redundant knowledge to gain influence over their peers. This research contributes to marketing by identifying non-linear effects for how salespeople mediate relationships between their peers and others in key intrafirm functions, and showing that salespeople with high selling-related knowledge realize enhanced effects of the representative position on sales performance.