All Adults Once Were Children

Issue Editor, Robert Block\u27s, point of view and summary of the articles in New Morbidities 2.

Revisiting African Agriculture: Institutional Change and Productivity Growth

Africa is largely agrarian, and the performance of agriculture shapes the performance of its economies. It has long been argued that economic development in Africa is strongly conditioned by politics. Recent changes in Africa’s political systems enables us to test this argument and, by extension, broader claims about the impact of political institutions on economic development. Building on a recent analysis of total factor productivity growth in African agriculture, we find that the introduction of competitive presidential elections in the last decades of the twentieth century appears to have altered political incentives, resulting in policy reforms that have enhanced the performance of farmers.African and African American StudiesGovernmen

Political Economy of Agricultural Trade Interventions in Africa

This paper uses new data on agricultural policy interventions to examine the political economy of agricultural trade policies in Sub-Saharan Africa. Historically, African governments have discriminated against agricultural producers in general (relative to producers in non-agricultural sectors), and against producers of export agriculture in particular. While more moderate in recent years, these patterns of discrimination persist. They do so even though farmers comprise a political majority. Rather than claiming the existence of a single best approach to the analysis of policy choice, we explore the impact of three factors: institutions, regional inequality, and tax revenue generation. We find that agricultural taxation increases with the rural population share in the absence of electoral party competition; yet, the existence of party competition turns the lobbying disadvantage of the rural majority into political advantage. We also find that privileged cash crop regions are particular targets for redistributive taxation, unless the country's president comes from that region. In addition, governments of resource-rich countries, while continuing to tax export producers, reduce their taxation of food consumers.African and African American Studie

Implementing advance care planning in routine nursing home care : the development of the theory-based ACP+ program

Background While various initiatives have been taken to improve advance care planning in nursing homes, it is difficult to find enough details about interventions to allow comparison, replication and translation into practice. Objectives We report on the development and description of the ACP+ program, a multi-component theory-based program that aims to implement advance care planning into routine nursing home care. We aimed to 1) specify how intervention components can be delivered; 2) evaluate the feasibility and acceptability of the program; 3) describe the final program in a standardized manner. Design To develop and model the intervention, we applied multiple study methods including a literature review, expert discussions and individual and group interviews with nursing home staff and management. We recruited participants through convenience sampling. Setting and participants Management and staff (n = 17) from five nursing homes in Flanders (Belgium), a multidisciplinary expert group and a palliative care nurse-trainer. Methods The work was carried out by means of 1) operationalization of key intervention components identified as part of a previously developed theory on how advance care planning is expected to lead to its desired outcomes in nursing homes into specific activities and materials, through expert discussions and review of existing advance care planning programs; 2) evaluation of feasibility and acceptability of the program through interviews with nursing home management and staff and expert revisions; and 3) standardized description of the final program according to the TIDieR checklist. During step 2, we used thematic analysis. Results The original program with nine key components was expanded to include ten intervention components, 22 activities and 17 materials to support delivery into routine nursing home care. The final ACP+ program includes ongoing training and coaching, management engagement, different roles and responsibilities in organizing advance care planning, conversations, documentation and information transfer, integration of advance care planning into multidisciplinary meetings, auditing, and tailoring to the specific setting. These components are to be implemented stepwise throughout an intervention period. The program involves the entire nursing home workforce. The support of an external trainer decreases as nursing home staff become more autonomous in organizing advance care planning. Conclusions The multicomponent ACP+ program involves residents, family, and the different groups of people working in the nursing home. It is deemed feasible and acceptable by nursing home staff and management. The findings presented in this paper, alongside results of the subsequent randomized controlled cluster trial, can facilitate comparison, replicability and translation of the intervention into practice

The New Institutionalism and Africa

After briefly reviewing the new institutionalism, this article uses the history of political reform in Africa to test its key tenet: that power, if properly organised, is a productive resource. It does so by exploring the relationship between changes in political institutions and changes in economic performance, both at the macro- and the micro level. The evidence indicates that political reform (Granger) causes increases in GDP per capita in the African subset of global data. And, at the micro level, it demonstrates that changes in national political institutions in Africa strongly relate to changes in total factor productivity in agriculture.African and African American StudiesGovernmen

Techniques utilized in the simulated altitude testing of a 2D-CD vectoring and reversing nozzle

Simulated altitude testing of a two-dimensional, convergent-divergent, thrust vectoring and reversing exhaust nozzle was accomplished. An important objective of this test was to develop test hardware and techniques to properly operate a vectoring and reversing nozzle within the confines of an altitude test facility. This report presents detailed information on the major test support systems utilized, the operational performance of the systems and the problems encountered, and test equipment improvements recommended for future tests. The most challenging support systems included the multi-axis thrust measurement system, vectored and reverse exhaust gas collection systems, and infrared temperature measurement systems used to evaluate and monitor the nozzle. The feasibility of testing a vectoring and reversing nozzle of this type in an altitude chamber was successfully demonstrated. Supporting systems performed as required. During reverser operation, engine exhaust gases were successfully captured and turned downstream. However, a small amount of exhaust gas spilled out the collector ducts' inlet openings when the reverser was opened more than 60 percent. The spillage did not affect engine or nozzle performance. The three infrared systems which viewed the nozzle through the exhaust collection system worked remarkably well considering the harsh environment

Work Experience from Paid Employment and the Path to Entrepreneurship: Business Takeover versus New Venture Start-Up

Our paper investigates how the type of work experience gained from prior paid employment influences the path to entrepreneurship. We distinguish between two distinct entrepreneurship entry modes: business takeover and new venture start-up. Using a large and rich French data set, we find that small firm experience increases the likelihood for business takeover, whereas management and same sector experience both increase the likelihood for new ventures. Our findings are relevant for policymakers aiming to improve the business transfer process

Structural optimization of 3D masonry buildings

In the design of buildings, structural analysis is traditionally performed after the aesthetic design has been determined and has little influence on the overall form. In contrast, this paper presents an approach to guide the form towards a shape that is more structurally sound. Our work is centered on the study of how variations of the geometry might improve structural stability. We define a new measure of structural soundness for masonry buildings as well as cables, and derive its closed-form derivative with respect to the displacement of all the vertices describing the geometry. We start with a gradient descent tool which displaces each vertex along the gradient. We then introduce displacement operators, imposing constraints such as the preservation of orientation or thickness; or setting additional objectives such as volume minimization.Shell Oil CompanyNatural Sciences and Engineering Research Council of Canada (PGS Program)Samsung Scholarship Foundatio