Managing digital business platforms: A continued exercise in balancing renewal and refinement

Central to the evolution of a digital business platform is the organization’s ability to balance exploration (renewal) and exploitation (refinement) simultaneously. Drawing on prior research—including digital platforms, contradictory tensions, and organizational ambidexterity—and our own experience investigating digital business platforms in organizations, this article provides insights into how executives can manage this evolution successfully. More specifically, we present a framework recognizing three pairs of organizational capabilities (i.e., identifying-nourishing, expanding-legitimating, and augmenting-embedding) that enable balancing renewal and refinement of the platform over time. We close by providing critical managerial practices that executives can use in anticipating, adjusting, and evaluating the evolution of a digital business platform over time, including its initiation, development, and growth.     

Learning from the implementation of the internet strategy at the Guayaquil stock exchange

This article examines how an Ecuadorian stock exchange pioneered a strategy to use the Internet to educate its local market and reach investors worldwide. The findings suggest that in the initial phase of its strategy development the actions that contributed the most were benchmarking and training, learning from past experience/history, and developing a shadow organization. Actions that helped during the middle phase were providing focus, experimenting, and developing, co‐opting, and securing the resources. In the final phase, actions that contributed the most were gaining internal commitment, investing in infrastructure, and appealing to existing relationships. These findings should be useful for organizational and information technology researchers and practitioners in developed and less‐developed countries. © 2004 Wiley Periodicals, Inc.     

Enterprise Web Accessibility Levels Amongst the Forbes 250: Where Art Thou O Virtuous Leader?

The research team measured the enterprise web accessibility levels of the Forbes 250 largest enterprises using the fully automatic accessibility evaluation tool Sortsite, and presented the compliance of the evaluated websites to WCAG 1.0, WCAG 2.0 and Section 508 accessibility levels. Given the recent attention to organizational leaders having ethical duties towards their dedicated employees, we propose that ‘societal citizenship behaviour’ concerns ethical duties of organizational leaders towards society in general and in particular to those who have less means to assert their needs. In effect, we found enterprise website accessibility levels to be in need of significant improvement. An interpretation of a positive path forward to better enterprise website accessibility levels is put forth based on a focus-group interaction and using BNML—a novel Business Narrative Modelling Language.     

Four visions of e‐commerce in Latin America in the year 2010

Excitement is growing around the world about the Internet's potential to enable a global electronic commerce. The reality, however, differs a great deal depending on what part of the world we consider. In Latin America, the e‐commerce theme is often found in the popular press portraying it as a solution for multiple national problems and as a catalyst to propel the region to a stronger position in the world economy. Unfortunately, many of the “new” capabilities required to harness the economic benefit of e‐commerce, which emphasize value‐adding steps performed through and with information, are very scarce in the region. This article raises questions about Latin America's ability to exploit the Internet, and to implement and capitalize on e‐commerce applications. It underscores the region's need to engage in a future planning discourse about the adoption of e‐commerce within organizations, communities, and across traditional boundaries of competition and national borders. To start the dialogue, four scenarios are presented as “future snapshots” written from the vantage point of the year 2010. Each scenario considers issues regarding technological adoption and potential social responses, and discusses some of the critical assumptions about patterns observed in the region today and their implications for the future. © 2001 John Wiley & Sons, Inc.     

Análisis del servicio de Urgencias aplicando teoría de líneas de espera

Those responsible for making decisions in hospitals are increasingly aware of the need to efficiently manage hospital systems. An option for analysis is done by queuing models. In this paper is analyzed the service area ER, in a public hospital applying the concepts and relationships of waiting lines. From the model results, it is concluded that in the emergency department does not have the required minimum number of doctors to allow a steady flow of patients. With the model, the minimum required number of doctors is calculated to meet current and future demand for service with the same service time and the same discipline of service. Analytical models, allowing direct understand the relationships between service demand, number of doctors and patient care priority viewed as a queuing system. The work is useful for administrators and managers of hospital systems.     

E-Business Maturity: Constraints Associated With Their Evolution

To compete effectively in the e-business world, an organization must structurally transform its internal foundation. This structural change requires an organization to develop an innovative e-business strategy, focusing on speed to market and breakthrough execution. Despite the recognition and care that in recent years has been dedicated to e-business, there remains a need for continuing research efforts that seek to better understand constraints on the evolution of an organization to a state that can take advantage of e-business possibilities. There is a special need for this when considering small and medium enterprises, or businesses in developing countries. To minimize risk exposure from e-business initiatives, it is imperative for an organization to identify potential constraints on e-business evolution. In this setting, we develop a research model that involves e-business constraints and e-business maturity. We classify the constraints into the categories of environment constraints, organizational constraints, and technological constraints. Our results indicate that there are constraints that can be more or less problematic, depending on the stage of maturity. The results are also quite different in large organizations versus Small and Medium Enterprises.     

An Impact Evaluation of Education, Health, and Water Supply Investments by the Bolivian Social Investment Fund

This article reviews the results of an impact evaluation ofsmall-scale rural infrastructure projects in health, water,and education financed by the Bolivian Social Investment Fund.The impact evaluation used panel data on project beneficiariesand control or comparison groups and applied several evaluationmethodologies. An experimental design based on randomizationof the offer to participate in a social fund project was successfulin estimating impact when combined with bounds estimates toaddress noncompliance issues. Propensity score matching wasapplied to baseline data to reduce observable preprogram differencesbetween treatment and comparison groups. Results for educationprojects suggest that although they improved school infrastructure,they had little impact on education outcomes. In contrast, interventionsin health clinics, perhaps because they went beyond simply improvinginfrastructure, raised utilization rates and were associatedwith substantial declines in under-age-five mortality. Investmentsin small community water systems had no major impact on waterquality until combined with community-level training, thoughthey did increase the access to and the quantity of water. Thisincrease in quantity appears to have been sufficient to generatedeclines in under-age-five mortality similar in size to thoseassociated with the health interventions.     

Analysis of the emergency service applying the queueing theory

Those responsible for the decision-making in hospitals are becoming more aware of the need to efficiently manage hospital systems. One option is the queueing models. In this work, the Emergency service of a public hospital is analyzed by applying the concepts and relations of queues. Based on the results of the model, it is concluded that the Emergency area does not count with the minimum number of doctors necessary for a constant flow of patients. The minimum number of doctors necessary to satisfy the current and future service demand, with the same service times and service disciplines, is calculated using the model. The analytical models allow to directly understand the existing relations between service demand, number of doctors and the attention priority of the patient seen as a system of queues. The work is of use to managers and those responsible for the management of hospital systems.     

Foreign Banks and Credit Volatility: The Case of Latin American Countries

The number of foreign banks in Latin America increased substantially over the period 1995–2001, prompting a debate on the potential consequences for host countries. Discussions focused on efficiency, the impact on competition and product market diversification in the banking industry, and the quality of the regulatory environment, among other issues. Against this background, this paper uses ARCH techniques to test the impact of foreign banks on both the level and the volatility of real private bank credit in a panel of eight Latin American countries, using quarterly data over the period 1995–2001. The empirical findings show that, together with financial development, the presence of foreign banks has contributed to reducing real credit volatility, improving the buffer shock function of the banking sector.     

The valuation of GMWB variable annuities under alternative fund distributions and policyholder behaviours

In this paper, we present a dynamic programming algorithm for pricing variable annuities with Guaranteed Minimum Withdrawal Benefits (GMWB) under a general Lévy processes framework. The GMWB gives the policyholder the right to make periodical withdrawals from her policy account even when the value of this account is exhausted. Typically, the total amount guaranteed for withdrawals coincides with her initial investment, providing then a protection against downside market risk. At each withdrawal date, the policyholder has to decide whether, and how much, to withdraw, or to surrender the contract. We show how different policyholder’s withdrawal behaviours can be modelled. We perform a sensitivity analysis comparing the numerical results obtained for different contractual and market parameters, policyholder behaviours and different types of Lévy processes.