阿兰·雷富礼：领导变革

6年前，宝洁公司深陷泥潭，业绩连年下滑，公司管理层在四个月内连续三次发布利润预警，公司最危险的时候，股价曾经在一日之内骤跌30％，市值大幅缩水。雷富礼临危受命，成为这家全球第一日化品牌的新任掌门人。     

GNR, MGR, and exact misspeclfication testing

The Gauss-Newton regression (GNR) is widely used to compute Lagrange multiplier statistics. A regression described by Milliken and Graybill yields an exact F test in a certain class of nonlinear models which are linear under the null. This paper shows that the Milliken-Graybill regression is a GNR. Hence one interpretation of Milliken-Graybill is that they identified a class of nonlinear models for which the GNR yields an exact test.     

Case study for evaluating campus sustainability: nitrogen balance for the University of Minnesota

American ecologists recently began to address the ecology of cities. Concurrently, higher education institutions have developed sustainability education programs and instituted sustainability policies and projects. This paper draws together these two disparate areas by examining the nitrogen (N) budget of the Twin Cities campus of the University of Minnesota. We addressed the question: what were the annual inputs, outputs and internal cycles of N on the University of Minnesota Twin Cities campus? We found that 508 Mg N yr-1 were brought into the campus and 494 Mg N yr-1 were emitted from the University of Minnesota campus. The largest N inputs were abiotic fixation (conversion of N₂ to NO_x by combustion) and food for humans and animals. The largest N output was NO_x, followed by wastewater. Our results expand the understanding of the ecology of institutions within an urban area and provide an opportunity for improving urban ecology education and environmental policy at educational institutions.     

Exact testing in multivariate regression

An F statistic due to Rao (1951,1973) tests uniform mixed linear restrictions in the multivariateregression model. In combination with a generalization of the Bera-Evans-Savin exact functional relationship between the W, LR, and LM statistics, Rao's F serves to unify a number of exact test procedures commonly applied in disparate empirical literatures. Examples in demand analysis and asset pricing are provided. The availability of exact tests of restrictions in certain nonlinear models when the model is linear under the null, originally explored by Milliken-Graybill (1970), is extended to multivariate regression. Generalized RESET, J-, and Hausman-Wu tests are resented. As an extension of Dufour (1989), bounds tests exist for nonlinear and inequality restrictions. Applications include conservative bound tests for symmetry or negativity of the substitution matrix in demand systems.     

Couples Therapy: Unravelling the Strands

Work with couples is one of the more widely practised forms of counselling or psychotherapy, yet seems to have found it difficult to establish its own identity and theoretical base. A theoretical tradition specific to work with the couple relationship has, however, developed over the past 40 years. Recently, this tradition has become more clearly demarcated and has begun to show signs of vigorous growth. It is important for therapists whose primary identification is with individual or family therapy, but who work with couples, to be familiar with this theoretical tradition, and with its practice implications. This paper selects six aspects of theory relating to couples therapy that the author has found useful in practice, and seeks to show how, separately and together, they can illuminate the nature and dynamics of the couple relationship.