On the relation between Wiener index and eccentricity of a graph

Journal of Combinatorial Optimization - The relation between the Wiener index W(G) and the eccentricity $$\varepsilon (G)$$ of a graph G is studied. Lower and upper bounds on W(G) in terms of...     

Integrating the Content and Process of Strategic MIS Planning with Competitive Strategy*

This paper presents a framework that links strategic MIS planning and business strategy and relates it to competitive advantage and company performance. To achieve this objective, the paper first delineates the dimensions of strategic MIS planning, focusing on both content and process issues. The notion of fit within dimensions, between sets of dimensions (process and content), and between MIS planning and competitive strategy is also introduced. Next, employing the Miles-Snow typology of business strategy, the paper posits normative differences in the dimensions of strategic MIS planning along different business (or competitive) strategies. The implications of our study for both decision makers and scholars are discussed. Propositions that tie competitive strategy, strategic MIS planning, and company financial performance are then presented. The paper concludes by providing direction for future research.     

User‐generated online queer media and the politics of queer visibility

In this article, we review sociological research on the politics of queer self‐presentation and visibility in user‐generated online media, such as personal homepages, blogs, YouTube vlogs, and queer‐specific social networking sites. Using an intersectional lens to attend to multiple axes of identity, the review offers a deeper understanding of how online queer media impact self‐presentation and visibility, while also privileging certain racial, sexual, and gender identities and practices over others. Online platforms can serve as spaces of resistance wherein queer people not only make themselves visible but also redefine dominant conceptions of identity, as well as the boundaries between public and private life. However, our review also finds that online spaces of queer self‐presentation often become another space for the reinforcement of dominant norms pertaining to various axes of one's identity. Given that the advent of user‐generated media and the Internet has facilitated the mobilization of queer people worldwide, an understanding of queer self‐presentation in online media demonstrates how new iterations of sex, gender, and sexuality are constructed in a technological era by queer‐identified people themselves, and how people can both resist and reify dominant social hierarchies across boundaries of space and time.     

Growth of U.S. population, 1940–1971, in the light of an interactive two-sex model

Since it is logically impossible to hold constant both male and female age-specific fertility rates, the intrinsic growth rates or the net reproduction rates for males and females, based on that assumption, are internally inconsistent. The interactive two-sex model presented in this paper holds constant a set of bivariate age-specific fertility rates by age of men and women and allows the male and female age-specific fertility rates to adjust themselves to achieve stability. The model gives the same intrinsic growth rate for both sexes and generates intrinsic age-specific fertility rates and intrinsic net reproduction rates for males and females which are consistent and can operate simultaneously on a population. The model is applied to the U.S. data for 1940–1971, and the results are compared with those obtained from the one-sex models.     

Use of n-ary block designs in diallel crosses evaluation

To fill the gap between theory and practice of modern statistical designs, this paper presents the use of n-ary block designs in the evaluation of balanced incomplete block (BIB) designs for all the four Griffing's (1956) complete dialled crosses (CDC) systems, the construction of which is proposed here by adopting a suitable BIB design and associating its treatments with the crosses under a CDC system.     

An alternative formulation of the birth function in a two-sex model

The inconsistency in Lotka's stable population model (two different intrinsic growth rates for the two sexes) arises from the fact that he considers two equations (for male and female births), and not because his equation for one sex does not involve the other. Many authors in the past have erroneously put emphasis on the latter point and modified Lotka's equations for male and female births. Since sex ratio at birth is constant, two independent equations for male and female births cannot exist. The correct approach is to attempt to form an equation for all births. The author followed this approach in his earlier works on the problem, but his birth functions were formulated from axiomatic considerations. The present paper provides a new birth function which has an intuitively appealing physical interpretation, and for which the interaction between the sexes is empirically determined from the data.