Modelling the Ecological Comorbidity of Acute Respiratory Infection,Diarrhoea and Stunting among Children Under the Age of 5 Years in Somalia

The aim of this study was to assess spatial co‐occurrence of acute respiratory infections (ARI), diarrhoea and stunting among children of the age between 6 and 59 months in Somalia. Data were obtained from routine biannual nutrition surveys conducted by the Food and Agriculture Organization 2007–2010. A Bayesian hierarchical geostatistical shared component model was fitted to the residual spatial components of the three health conditions. Risk maps of the common spatial effects at 1×1 km resolution were derived. The empirical correlations of the enumeration area proportion were 0.37, 0.63 and 0.66 for ARI and stunting, diarrhoea and stunting and ARI and diarrhoea, respectively. Spatially, the posterior residual effects ranged 0.03–20.98, 0.16–6.37 and 0.08–9.66 for shared component between ARI and stunting, diarrhoea and stunting and ARI and diarrhoea, respectively. The analysis showed clearly that the spatial shared component between ARI, diarrhoea and stunting was higher in the southern part of the country. Interventions aimed at controlling and mitigating the adverse effects of these three childhood health conditions should focus on their common putative risk factors, particularly in the South in Somalia.     

The impact of narrative disclosure readability on bond ratings and the cost of debt

Prior research on the determinants of credit ratings has focused on rating agencies’ use of quantitative accounting information, but the there is scant evidence on the impact of textual attributes. This study examines the impact of financial disclosure narrative on bond market outcomes. We find that less readable financial disclosures are associated with less favorable ratings, greater bond rating agency disagreement, and a higher cost of debt. We improve causal identification by exploiting the 1998 Plain English Mandate, which required a subset of firms to exogenously improve the readability of their filings. Using a difference-in-differences design, we find that the firms required to improve the readability of their filings experience more favorable ratings, lower bond rating disagreement, and lower cost of debt. Collectively, our evidence suggests that textual financial disclosure attributes appear to not only influence bond market intermediaries’ opinions but also firms’ cost of debt.     

Commercializing Nascent Technology: The Case of Laser Diodes at Sony

To develop really new products, a company often needs to get a handle on really new technologies. Although some breakthrough products simply combine existing technologies in novel ways, other innovations require the successful commercialization of nascent technologies. In other words, such innovations depend on entirely new structures and methods that have been demonstrated in a research environment but have not yet been refined to the point where they are ready for production. The path from nascent technology to full-scale production presents numerous managerial challenges that must be overcome if a company is to develop really new products that involve really new technologies. Samuel Wood and Gary Brown discuss these challenges, and they describe methods for managing the successful commercialization of nascent technologies. They illustrate these methods by examining Sony's commercialization of laser diodes—semiconductor devices that play an important role in the operation of CD players and other optical disk readers. They divide the process of commercializing nascent technology into three stages: appropriation, implementation, and manufacture. The first stage—appropriation—involves monitoring, assessing, and capturing new technologies. Sony handles this stage with a small, loosely structured research organization, separate from the development organization. In this stage, management must ensure that the objectives pursued by the research organization support the development organization's long-term goals. To foster coordination between research and development, Sony employs such network-building techniques as internal research symposia and technology expositions, orientation periods for researchers, transferring managers between research and development, and transferring researchers to development and other functions. The implementation stage involves transferring knowledge to development, as well as refining the technology to the point where it is reproducible, testable, and documented. Sony facilitates technology commercialization by transferring project team members from research to development and making those people responsible for implementation. To reach the final stage, manufacture, the firm must find the means for developing and refining mass production tools and procedures. Meeting this challenge requires close interaction and integration between process and production engineers.     

Dr. Martin Bronfenbrenner (1914-1997): Scholar, Critic, Cynic, and Comrade-in-Arms

ABSTRACT Professor Martin Bronfenbrenner's mark on the economics profession was significant and worth remembering. He touched the lives of many as a father, cousin, teacher, scholar, expert referee, colleague, and judge of important contemporary debates. Of special interest is his unique personality. He was a specialist in self-effacement, peppered with liberal shakes of cynicism and sarcasm. Despite all this, he managed to win the respect and hearts of individuals on several continents and across several generations. This essay brings a small but diverse part of the story together in one place.     

Modeling Mortality With Jumps: Applications to Mortality Securitization

In this article, we incorporate a jump process into the original Lee–Carter model, and use it to forecast mortality rates and analyze mortality securitization. We explore alternative models with transitory versus permanent jump effects and find that modeling mortality via transitory jump effects may be more appropriate in mortality securitization. We use the Swiss Re mortality bond in 2003 as an example to show how to apply our model together with the distortion measure approach to value mortality-linked securities. Pricing the Swiss Re mortality bond is challenging because the mortality index is correlated across countries and over time. Cox, Lin, and Wang (2006) employ the normalized multivariate exponential tilting to take into account correlations across countries, but the problem of correlation over time remains unsolved. We show in this article how to account for the correlations of the mortality index over time by simulating the mortality index and changing the measure on paths.     

A Multi-level Investigation of Authentic Leadership as an Antecedent of Helping Behavior

We develop and test a trickle-down model of how authentic leadership at the department level flows down the organizational hierarchy to encourage team leader authentic leadership and consequently, promotes team and individual-level supervisor-directed helping behavior. Analyses of multi-level and multi-source data collected from a total of 487 employees comprising 122 teams, 47 departments, and 4 different working areas of a major public sector organization in Taiwan show that team leaders’ authentic leadership mediates the relationship between departmental authentic leadership and individual-level leader–member exchange (LMX). We also found that intra-team trust completely mediates the influence of team authentic leadership on both team helping behavior and individual-level supervisor-directed helping behavior. Finally, the results reveal that self-concordance mediates the influence of team authentic leadership on individual-level supervisor helping behavior as well as the influence of individual-level LMX on individual-level supervisor-directed helping behavior. Theoretical and practical implications of these findings are discussed.     

Long‐term Determinants of Deforestation in Ghana: The Role of Structural Adjustment Policies

Abstract: Prior to the 1980s, Ghana witnessed an alternating cycle of boom and scarcity, culminating in the introduction of structural adjustment policies in the early 1980s. This paper uses data from the Ghana Forestry Services, Ministry of Food and Agriculture, FAO Yearbook of Forestry Products, Ghana Timber Marketing Board, Quarterly Digest of the Ghana Statistical Service, World Debt Tables, Bank of Ghana, IMF, COCOBOD and Ministry of Finance to examine the impact of SAP on deforestation in Ghana. The paper reveals a negative impact of structural adjustment on deforestation in Ghana through both direct and indirect channels. The most important channel of the effect of SAP on deforestation resulted from the conversion of forestland to crop farming, particularly cocoa farming, during the post‐adjustment period. Even though wood extraction exhibited a negative impact on deforestation, the impact seemed relatively weaker than that of agricultural land use. In addition, while in the long run, deforestation tended to be more responsive to logging than agriculture, in the short run the elasticity of deforestation with respect to agriculture tended to be greater than that with respect to logging. Finally, agriculture was relatively more important in causing deforestation.     

Effect of Energy Prices on Economic Growth in the ECOWAS Sub-Region: Investigating the Channels Using Panel Data

The article empirically examines the effect of energy prices on economic growth within the Economic Community of West African States sub-region by acknowledging that the effect of energy prices on growth is quintessentially indirect and hence can be tracked through some channels. Exploiting the System Generalized Methods of Moments estimation technique for the period spanning 2002–2015, the results indicate that the overall effect of energy prices on economic growth is significantly negative. This effect propagates mainly through government consumption expenditure and investment, albeit its effect through real interest rate is positive. However, its negative effects on government consumption, investment, and exchange rate significantly overwhelm the positive effect from real interest rate.     

Capital flows and economic growth revisited: evidence from five Sub-Saharan African countries

The study examines the differential effects of capital flows on economic growth in five Sub-Saharan African (SSA) countries over the period 1970–2014. Using the autoregressive distributed lag methodology, the findings show that in the long-run capital flows (i.e. foreign direct investment (FDI), aid, external debt, and remittances) have different effects on economic growth. FDI has a significant positive effect in Burkina Faso and negative effects in Gabon and Niger whereas the impact of debt is negative in all countries. Aid, however, promotes growth in Niger and Gabon whiles it deters growth in Ghana. Remittances, on the other hand, have a significant positive effect in Senegal. Finally, gross capital formation is significant in most of the countries and the impact of trade is mixed. These results suggest that the benefits of capital flows in SSA have been overemphasized.