The art and science of winning physician support for Six Sigma change

Active physician participation and acceptance of Six Sigma is critical to successful implementation. Take a look at strategies and techniques that can help secure physician support for Six Sigma.     

Germline genomes--a biological fountain of youth?

The fusion of male- and female-derived gametes initiates the phenomenal process of producing a highly complex mammalian organism. Successful reproduction is so important that mammals invoke a battery of protective mechanisms for the germ cell lineages that function to maximize genetic integrity while still allowing genetic diversity and adaptation. Protective mechanisms likely include, but are not limited to, robust DNA repair to safeguard genetic integrity and apoptosis to remove cells with intolerable levels of DNA damage. Analyses of spontaneous mutant frequencies are generally consistent with germline DNA being stringently maintained relative to somatic tissues. Despite the rigorous protection afforded germ cells, genetic integrity is observed to decline with increased maternal and paternal age. It is not yet clear whether cells in the germ line truly age or whether other processes decline or become dysfunctional with age. For example, in a younger animal, the differentiation and/or utilization of germ cells with lower genetic integrity might be disallowed, whereas in an older animal, such cells might slip past these quality-control mechanisms.     

A set covering approach to bus stop location

This paper considers the problem of locating bus stops in the context of a set covering problem. Zero-one integer programming models are suggested for use in the location of bus stops on new routes and for use in the location of express bus stops on current routes. The models may be used to locate the minimum number of (express) bus stops required to ensure that no passenger need walk more than a specified distance to reach an (express) bus stop. A modified version of the model is presented which enables the router to locate a specified number of (express) bus stops in such a manner that the total distance walked by all boarders is minimized.     

Letters to the editor

Relatively little attention has been paid to the use and importance of labels used by men who have sex with men to describe insertive or receptive sexual behavior during intercourse. This study examines sexual self‐labels, sexual behavior, HIV transmission risk, and psychological functioning among 205 HIV‐seropositive men who have sex with men. The majority of participants (88%) identified as a “top, “ a “bottom, “ or “versatile. “ Tops were more likely to engage in insertive anal intercourse than bottoms, and bottoms were more likely to engage in receptive anal intercourse than tops, with versatiles reporting intermediate rates of both behaviors. Although the results suggest preliminary evidence regarding the predictive utility of self‐labels, sexual behaviors of self‐label groups were greatly overlapping. Differences were found among self‐label groups in gay self‐identification, internalized homophobia, sexual sensation seeking, and anxiety. Results suggest an added value in assessing self‐labels in addition to asking about sexual behavior.     

Enterprising Education: Doing Away with the Public School System

We critically examine the accepted notion that primary education is a legitimate and necessary function of the state. The notion is based upon three tenets: 1) public education is a necessary condition for democracy, 2) the market will not provide equal access and quality of education to all, and 3) education represents an external economy. Each tenet is addressed and evaluated according to its merits. In doing so, we also contrast the fulfillment of the ends implicit in the tenets under state and market provisions. We conclude that the state provision of primary education cannot be justified by these goals, and that market provision is a preferable alternative. This revised version was published online in July 2006 with corrections to the Cover Date.     

Standardizing basic concepts in sociology

The idea of standardizing concepts in sociology is not new, but we have made little progress, despite the early hopes of such theorists as Durkheim and Weber. This article refutes the arguments of some who contend that we do not need standard concepts, we cannot make standard concepts, social phenomena are too complex and changeful, sociologists are too individualistic and sociological concepts are too context-dependent. The author proposes that the American Sociological Association appoint a Committee on Basic Sociological Concepts to investigate and recommend the official adoption of a basic conceptual language in American sociology. This paper is excerpted from a longer discussion first presented to a session on metatheory at the 1990 meetings of the American Sociological Association, and forthcoming in a collection of papers from that session.     

Dynamic Measures of Individual Deprivation

We introduce a one-parameter class of individual deprivation measures. Motivated by a suggestion of Runciman, we modify Yitzhaki’s index by multiplying it by a function that is interpreted as measuring the part of deprivation generated by an agent’s observation that others in his reference group move on to a higher level of income than himself. The parameter reflects the relative weight given to these dynamic considerations, and the standard Yitzhaki index is obtained as a special case. In addition, we characterize more general classes of measures that pay attention to this important dynamic aspect of deprivation.