Bill-and-keep and the economics of interconnection in next-generation networks

As telecommunications networks are being transformed into all-IP, next-generation networks (NGNs), interconnection is attracting renewed regulatory debate. Next-generation features suggest that interconnection regimes developed for the internet or for traditional telephony networks are unlikely to be suitable in most NGN contexts. Efficient NGN interconnection will take advantage of NGNs’ technical possibilities (e.g., session control), facilitate their operational requirements (e.g., quality-of-service differentiation) and accommodate their service versatility. We discuss the application of alternative interconnection charging models (with a particular focus on bill-and-keep) by applying the main lessons from the interconnection literature in a framework designed for the practical needs of regulators. We show that in NGNs – as well as in other networks – there is no single interconnection charging model that maximizes economic efficiency in all circumstances. Finally, we discuss the implications for regulatory policy towards NGN interconnection.     

Sovereign credit spreads and the composition of the government budget

This paper investigates the relationship between sovereign credit spreads and the composition of the government budget. The key result of this paper is that governments that invest more and spend less on consumption have significantly lower sovereign credit spreads. This finding is in accordance with the endogenous growth theory, which predicts a positive impact of government investment and a negative impact of government consumption on the long-term growth rate. Finally, a broader tax base significantly reduces sovereign credit spreads. A possible explanation may be that governments with more tax receipts are less likely to have liquidity problems to finance their debt charges.     

Market Conduct and Endogenous Lobbying: Evidence from the U.S. Mobile Telecommunications Industry

This paper empirically explores the relationship between firms' market behavior and their lobbying activities in a regulated market. In particular, we investigate whether the amount of contributions offered by cellular service providers to fund the campaigns of political parties affected market conduct in the early US mobile telecommunications industry. We structurally estimate market interactions while taking the potential endogeneity of lobbying decisions into account. Our results show that competition was more intense in those states where campaign contributions by the cellular industry have been higher. Furthermore, we reject the hypothesis that lobbying activities can be regarded as exogenous in the study of market conduct.     

Exchange Rates and the Conversion of Currency‐Specific Risk Premia

How do the risk factors that drive asset prices influence exchange rates? Are the parameters of asset price processes relevant for specifying exchange rate processes? Most international asset pricing models focus on the analysis of asset returns given exchange rate processes. Little work has been done on the analysis of exchange rates dependent on asset returns. This paper uses an international stochastic discount factor (SDF) framework to analyse the interplay between asset prices and exchange rates. So far, this approach has only been implemented in international term structure models. We find that exchange rates serve to convert currency‐specific discount factors and currency‐specific prices of risk – a result linked to the international arbitrage pricing theory (IAPT). Our empirical investigation of exchange rates and stock markets of four countries presents evidence for the conversion of currency‐specific risk premia by exchange rates.     

The acceptability of different types of soymilks available in Cape Town in consumers from high and low socio‐economic areas

The aim of this study was to determine the knowledge and acceptability of soymilk (defined as consumption pattern/usage and taste) by adult consumers, residing in different socio‐economic areas (low vs. high) in Cape Town. The study population of 214 participants were selected using convenience sampling. A questionnaire was developed in order to obtain demographic data (four items); basic general knowledge of soymilk (four items); and acceptability of the tested products (consumption patterns and taste) (eight items). There was a significant difference between the two groups (P = 0.000) regarding basic knowledge of soymilk, with significantly more in the high socio‐economic area (HSEA) having a score of at least 75%. Gender (P = 0.082) and age (P = 0.122) did not have a significant impact on the consumption patterns of soymilk. There was no significant difference between the two groups with respect to current usage (P = 0.228) and frequency of use (P = 0.213) of soymilk. However, a significantly smaller group (P = 0.000) of participants in the low socio‐economic area had previously tasted soymilk compared with those in the HSEA (16.7% vs. 41.5%; P = 0.000). In conclusion, socio‐economic status appeared to be associated with knowledge of soymilk. No significant differences with regard to gender, age or current usage in the two groups studied were noted.     

Pre-entry experience,technological complementarities,and the survival of de-novo entrants. Evidence from the US telecommunications industry

We investigate the effect of pre-entry experience on firms’ performance in terms of survival. In particular we focus on entrants from a related upstream industry – semiconductors – into a downstream industry – telecommunications. We examine a sample of 336 de-novo start-ups in the US telecommunication industry and we estimate a discrete time hazard model of firm exit. Our findings show that, after controlling for both firms and founders’ characteristics, firms whose founders had prior experience in a related upstream industry such as semiconductors enjoy a relatively lower hazard of exit with respect to intra-industry spinoffs and other types of start-ups. Additionally, background heterogeneity of the founding team is an important determinant of survival for the firms in our sample. Our results point to the role of interdependences and technological complementarities between two vertically related industries in affecting the performance of new entrants.     

When knowledge management meets HR strategy: an exploration of personalization-retention and codification-recruitment configurations

The resource-based view and the knowledge-based view are important developments in strategic management theory, and ‘knowledge management’ has exploded in the popular management literature. There is, however, little empirical literature that explores the connections between firms' attempts at knowledge management and their HR strategies. In this paper, we focus particularly on links between knowledge management and staffing practices. High-technology manufacturing was selected as the site of our research, as high-technology firms rely on highly skilled employees to innovate and develop new products and are therefore an ideal environment for exploring the strategies employed for both managing knowledge, and recruiting and retaining employees. Drawing particularly on the work of Hansen et al. (1999 Hansen, M.T., Nohria, N. and Tierney, T. 1999. What's Your Strategy for Managing Knowledge?. Harvard Business Review, March–April:, : 106–16. [PubMed], [Web of Science ®] , [Google Scholar]), this paper identifies and explores two fits between knowledge management and HR strategy or what we call KM-HR configurations: ‘personalization-retention’ and ‘codification-recruitment’. We argue that there is no one way to manage knowledge and its links to HRM and build a simple framework of potential KM-HR configurations with propositions for future research.     

Identity in entrepreneurship effectuation theory: a supplementary framework

The article proposes a new framework on identity construction in entrepreneurship that in valuable ways supplements the logic of identity presented in Sarasvathy??s (2001, 2008) popular effectuation theory. Effectuation theory assumes that identity is a given and relative stable precondition of the entrepreneurial process that support the entrepreneur in ordering preferences in the process of effectuating resources, stakeholder commitment, etc.. The article shows that identity construction is an active and integral part of the effectuation process, and it importantly influences the manner in which the entrepreneur acts and makes decisions in the process. The article seeks to challenge and advance effectuation theory??s view on identity based on a narrative study of ten novice student entrepreneurs. The study gives insight into the identity processes involved in becoming a student entrepreneur, and it may serve as a guide to how entrepreneurship educators and counselors can place more emphasis on identity related struggles involved in the entrepreneurial effectuation process.     

Images of entrepreneurship: towards a new categorization of entrepreneurship

Based on a systematic literature review of contemporary entrepreneurship process research, the article provides a supplementary way of categorizing research on the entrepreneurial process which takes philosophy of science into account to a higher extent than done in previous categorizations. The motivation for doing so is to minimize problems of communication and comparison of concepts, results and theoretical contributions often experienced in entrepreneurship research. Applying Burrell and Morgan’s (1979) paradigmatic framework to analyse the selected literature, it is suggested that the essence of past and present entrepreneurship process theory can be captured in five images of entrepreneurship: 1) The Image of Machines; 2) The Image of Evolution; 3) The Image of Contingencies; 4) The Image of Mind; and 5) The Image of Social Becoming. The five images are considered to be concise and easily recalled tools, which will be valuable in the continuous development and organization of future ideas in entrepreneurship research.