ECONOMIC ORDER QUANTITIES WITH QUANTITY DISCOUNTS: GRANDMA DOES IT BEST

We examine a new algorithm developed by Kuzdrall and Britney [5] for locating the optimal order quantity in the presence of quantity discounts. Their algorithm, based on a model for the supplier's formulation of the price schedule, involves a regression analysis to identify the supplier's variable cost per unit and the fixed cost that the supplier seeks to recover, followed by an iterative search for the optimum. The authors describe this method as a “convenient alternative to the aimless searching of traditional approaches” [5, p. 101]. We examine the allegation of superiority of their total setup lot-sizing model over the classical method and dispute their claim of superiority.     

Informal Caregiving: Dilemmas of Sandwiched Caregivers

Increased demand will intensify pressures for informal caregiving, especially for sandwiched caregivers. Using 1999, National Long Term Care Survey data, we contrasted socio-demographic statistics, care environments, activities of daily living (ADL) and instrumental activities of daily living (IADL) assistance, life quality, and employment burden of sandwiched versus non-sandwiched parental caregivers. Regression analysis explored variables influencing caregiving hours, employment accommodation, stress, strain, time for self, social life limits, free time, and excess burden. We found no differences in caregiving hours, no greater labor force accommodation, but lower quality of life among sandwiched caregivers with more than they can handle, but they undertook parent care despite quality of life reduction. Uniquely, the research indicates sandwiched caregivers’ employment mitigates stress, strain, and burden and supports policy changes providing more supportive workplace environments.

Conceptual, computational and inferential benefits of the missing data perspective in applied and theoretical statistical problems

This article advocates the following perspective: When confronting a scientific problem, the field of statistics enters by viewing the problem as one where the scientific answer could be calculated if some missing data, hypothetical or real, were available. Thus, statistical effort should be devoted to three steps:

Questions & Answeres: Reflections on Forecasting

Dedicated to the late Professor J. B. S. Haldane who brought to my attention the following very significant story from the ancient Indian epic Mahabharat (Nala—Damayanti Akhy[abar]n): The king lost his way in a jungle and was required to spend the night in a tree. The next day he told some fellow traveller that the total number of leaves on the tree were “so many”. On being challenged as to whether he counted all the leaves he replied; “No, but I counted leaves on a few branches of the tree and I know the science of die throwing”. (I can vouch for accurateness of the reproduction only in the essential respects.)     

Statistical Matching Using File Concatenation With Adjusted Weights and Multiple Imputations

Statistically matched files are created in an attempt to solve the practical problem that exists when no single file has the full set of variables needed for drawing important inferences. Previous methods of file matching are reviewed, and the method of file concatenation with adjusted weights and multiple imputations is described and illustrated on an artificial example. A major benefit of this approach is the ability to display sensitivity of inference to untestable assumptions being made when creating the matched file.     

Statistical Analysis with Soft Computation for Fuzzy Answering in Sampling Survey

In this article, we will provide the definition of fuzzy mode, related characteristics, and proofs. By discussing these characteristics, data analysis, and explanation for this issue, we apply the soft computing techniques on human thought measurement and public's idea with a more appropriate way. In the conclusion, future experiments and further suggestions are presented.     

Mothers' Self-Reported Control of Their Preschool Children's Emotional Expressiveness: A Longitudinal Study of Associations with Infant–Mother Attachment and Children's Emotion Regulation

In the present longitudinal study we examined the associations between mothers’ self‐reported control of their preschoolers’ emotional expressiveness and two other key facets of early socioemotional development: the quality of the infant–mother attachment and children's emotion regulation. Seventy‐six white preschool‐aged children (46 boys and 30 girls) and their mothers participated. Principal assessments included the Parent Attitude Toward Child Expressiveness Scale (PACES; Saarni, 1985 ), the infant Strange Situation, and ‘Beat the Bell,’ a measure designed for this study to elicit children's emotional expression, sharing, and suppression in the presence of their mothers. Mothers’ control of their children's expressiveness was associated with both attachment and children's emotion regulation in theoretically predicted ways. First, mothers of children who had been classified insecure‐avoidant in the Strange Situation reported greater control of their children's negative expressiveness than other mothers, and mothers of children who had been classified insecure‐ambivalent reported less control of their children's negative expressiveness than other mothers. Second, mothers who reported greater control of their children's expressiveness had children who were less likely to express and share their feelings and more likely to suppress their anger in the ‘Beat the Bell’ emotion regulation assessment. Findings are discussed in terms of the role of maternal emotion socialization in children's early socioemotional development.     

Independence, Participation, and the Meaning of Intellectual Ability

This article presents a non-speaking person's perspectives on independence and the implications of newfound communication abilities for her participation in the world and upon the meaning of intellectual ability. The person with the communication disability also has autism and, early in her life, was classified by school officials as 'severely retarded'. The narrative focuses especially on the concepts of independence, participation, and intellectual competence or intellectual performance, and their relationship to the concepts of democracy, freedom, and identity, all from a non-essentialist perspective. In addition, the article addresses practical questions about how, from her perspective, the non-speaking person developed the ability to communicate without physical support.