Tests and Confidence Intervals for an Extended Variance Component Using the Modified Likelihood Ratio Statistic

Abstract.  The large deviation modified likelihood ratio statistic is studied for testing a variance component equal to a specified value. Formulas are presented in the general balanced case, whereas in the unbalanced case only the one-way random effects model is studied. Simulation studies are presented, showing that the normal approximation to the large deviation modified likelihood ratio statistic gives confidence intervals for variance components with coverage probabilities very close to the nominal confidence coefficient.     

Biological mothers' grief: the postadoptive experience in open versus confidential adoption

Advocates of open adoption believe that it lightens and in some cases alleviates the grieving process after relinquishment. Advocates of confidential adoption, however, believe that open adoption limits and denies the grieving process that must take place for subsequent life adjustment. A study of 59 women who had placed a child for adoption through an agency--18 via open adoption and 41 via confidential adoption--revealed significant differences between the two groups on five subscales of the research instruments. Implications of this pioneer study in this new practice area are discussed and further research suggested.     

Bad Days Don't End When the School Bell Rings: The Lingering Effects of Negative School Events on Children's Mood, Self-esteem, and Perceptions of Parent–Child Interaction

Each day for five days, 79 fifth‐grade children reported on events that occurred at school and they and their parents described their interactions with each other each evening. Consistent with previous research, it was found that on days when children reported more academic or peer problems during the day at school, they later described more aversive interactions with their parents. As hypothesized, increases in anxiety and drops in children's state self‐esteem partially mediated this link. However, parents did not report any differences in their interactions with the target child on days when the child experienced problems at school. This study suggests that negative events experienced by children while at school lead to short‐term changes in mood and self‐esteem, which influence their perceptions of subsequent interactions at home with parents.     

Minimizing makespan in an ordered flow shop with?machine-dependent processing times

We consider a generalization of the proportionate flow shop problem with the makespan objective. Each job has a processing requirement and each machine has a characteristic value. In our case, we assume that the time a job occupies a machine is equal to the processing requirement of the job plus a setup time that is equal to the characteristic value of that machine. In this paper, we consider permutation schedules and show that the problem is solvable in polynomial time when the number of machines is fixed.     

Reducing differences between profiles of weights: A “peer-restricted” cross-efficiency evaluation

This paper deals with the selection of the profiles of weights to be used in cross-efficiency evaluations. In an attempt to prevent unrealistic weighting schemes, one of the issues of main interest that we address here is that of the zero weights, since their use implies that some of the variables considered are excluded from the assessments to be made. In the calculation of cross-efficiency scores, we propose to ignore the profiles of weights of the DMUs that cannot make a choice of non-zero weights among their alternate optima. The different units are therefore assessed in a peer-evaluation that does not consider the profiles of weights of some inefficient DMUs. This approach is referred to as “peer-restricted” cross-efficiency evaluation. Aside from avoiding zero weights, the choice of weights that we make also seeks to reduce the differences between the weights profiles selected as much as possible. Thus, in the “peer-restricted” cross-efficiency evaluation in the present paper we also try to avoid that the different DMUs attach very different weights to the same variable. Finally, we extend this approach to derive a common set of weights by exploiting the idea of similarity between profiles of weights.     

Global economy of signs and selves: A view of work regimes in call centers in the Philippines

Reflecting on the global nature of third-party offshore call center and its implications on the agent, this piece is an account of the researcher's own experience, observations, and interactions as a call center worker. Using the theoretical frame Global economy of signs and selves, weaving ideas from Scott Lash and John Urry, Pierre Bourdieu and Erving Goffman, the study looks at some dimensions and conditions of global service work experienced by Filipino agents. With the relocation of accounts offshore, call centers in the Philippines have given rise to a growing section of society required by the imperatives of their work to “defy” time and space, synchronizing their cycles and routines according to the rhythms and cycles of a distant social dimension and the imperatives of globalized production. Although relocation has allowed firms to reduce costs and make use of cheaper labor, the distance traversed by this new call center platform comes with some hidden costs, borne by workers, who may themselves take these other forms of work they deliver for granted. Highlighting under-emphasized, undervalued and misrecognized aspects of call center work, the study attempts to link the global, the local and the personal, while emphasizing the social and symbolic work involved in call center production.     

Designing an ADP planning process

A great deal has been written about the frustrations of carrying out long range planning in large organizations. Although far less has been written about ADP planning, similar frustrations (as well as benefits) have been suggested.The case study described in this article deals with the recent experiences of a large, federal regulatory agency— the Food and Drug Administration—in the design and implementation of an ADP planning process from 1974 to the present. Although the process was designed to meet the Agency's specific needs, many of the lessons learned will be useful to others contemplating a process for their organization (public or private).