Strategic implications of the information age

conclusion The continued enhancements of information technologies facilitate and increase knowl-edge intensity in organizations. As such, knowledge and information technologies play critical roles in the development of competitive advantage by firms. For example, IT facilitates organizational learning and helps firms move into international markets by making it easier to coordinate geographically dispersed units and operations. Even entrepreneurial new venture firms are moving into international markets earlier in their life cycle (Oviatt and MacDougall, 1977; Zahra et al., 2000). IT has become especially important to smaller, entrepreneurial firms to facilitate their networking and coopera-tive ventures with other firms in order to compete more effectively with much larger firms for major projects. Furthermore, information technologies facilitate these firms’ technological learning, a critical element to their survival and long-term success (Zahra et al., 2000). IT has also helped firms from emerging markets (e.g., Korea, Mexico) compete more effectively against firms from developed markets that have more resources. Thus, IT has helped facilitate the increasing globalization of businesses.     

A theory of justice?

This is a critical analysis of John Rawls's A Theory of Justice. Rawls offers a theoretical justification of social democratic principles of justice. He argues that they are the principles which rational men would choose, under defined constraints, in an original position of social contract. The author criticises Rawls's assumption that men of any background, of any socialisation, would choose these principles in the original position. He argues that the choice which Rawls imputes to his contractors reflects a specific socialisation — one dominant in Western democracies. The theory is useful because it systematises a particular sense of justice; it is in no sense however a universal theory.My warm thanks go to Jimmy Altham, Harry Bracken, Stefan Collini, Martin Hollis, Steven Lukes, Quentin Skinner and Denys Turner. Without their comments this paper would certainly have been a poorer effort. I am also grateful to Professor Rawls for a useful correspondence about his position.     

The Correspondence Between Fertility Intentions and Behavior in the United States

Using data from the 1979 National Longitudinal Survey of Youth, we describe the correspondence between intended family size and observed fertility for US men and women in the 1957–64 birth cohorts. Mean fertility intentions calculated from reports given in the mid‐20s modestly overstate completed fertility. But discrepancies between stated intent and actual fertility are common—the stated intent at age 24 (for both women and men) is more likely to miss than to match completed fertility. We focus on factors that predict which women and men will have fewer or more children than intended. Consistent with life‐course arguments, those unmarried, childless, or (for women) still in school at approximately age 24 were most likely to underachieve their intended parity (i.e., had fewer children than intended at age 24). We discuss how such discrepancies between intentions and behavior may cumulate to produce sizable cross‐group fertility differences.     

The Interpretation of Line of Regard by Prelingually Deaf Children

The ability of 5- to 12-year-old deaf children to utilise and interpret another person's visual line of regard (where the eyes are looking) was studied in four experiments using cartoon faces. The children had little difficulty in determining whether or not a face was looking directly at them. They had more difficulty, however, with more complex tasks requiring them to infer mental states of desire and intention from line of regard and to ignore line of regard when it was inappropriate to attend to this cue. Deaf children raised in a hearing environment appear to have more difficulty with these more complex tasks than hearing children. The results are discussed in terms of the special difficulties facing some deaf children in the development of skills involving utilisation of line of regard and the implications for the development of joint attentional behaviour, theory of mind and dyadic social interaction in deaf and hearing children.     

On trends and constants in periodic autoregressions

Periodic autoregressions are characterised by autoregressive structures that vary with the season. If a time series is periodically integrated, one needs a seasonally varying differencing filter to remove the stochastic trend. When the periodic regression model contains constants and trends with unrestricted parameters, the data can show diverging seasonal deterministic trends. In this paper we derive explicit expressions for parameter restrictions that result in common deterministic trends under periodic trend stationarity and periodic integration.     

Generation of multivariate distributions by vertical density representation

Troutt (1991,1993) proposed the idea of the vertical density representation (VDR) based on Box-Millar method. Kotz, Fang and Liang (1997) provided a systematic study on the multivariate vertical density representation (MVDR). Suppose that we want to generate a random vector X[d]Rⁿthat has a density function ?(x). The key point of using the MVDR is to generate the uniform distribution on [D]_?(v) = {x :?(x) = v} for any v > 0 which is the surface in RⁿIn this paper we use the conditional distribution method to generate the uniform distribution on a domain or on some surface and based on it we proposed an alternative version of the MVDR(type 2 MVDR), by which one can transfer the problem of generating a random vector X with given density f to one of generating (X, X_n+i) that follows the uniform distribution on a region in Rⁿ⁺¹defined by ?. Several examples indicate that the proposed method is quite practical.     

EMPIRICALLY ACCELERATED CONVERGENCE OF THE SPACINGS STATISTICS TO NORMALITY

If the asymptotic normality of a statistic is inadequate for approximating its distribution in practice, then the statistic may be transformed in order to improve the approximation by accelerating the convergence to normality. We treat a goodness-of-fit statistic, the sum of the logarithms of generalized uniform spacings introduced by Cressie (1976, 1978), in this spirit. Specifically, we apply the method of maximum likelihood to simulations of the statistic in order to estimate a power transformation, as in Box & Cox (1964), and hence develop a small sample normal approximation. This approximation provides a more versatile method of applying the statistic than currently available tables of percentiles.