How to Get Rid of Thunder Thighs

I appreciate the insightful and important things your muffin top has to say to me, but my thunder thighs still think they’re fat. I’m overweight (sometimes). On a BMI scale, I fluctuate in and out of the dreaded “overweight” category. While I acknowledge that the BMI scale has its flaws, it was designed to be a quick approximation of weight to height; it is not designed to be a scientific test. Sometimes I tell myself I am super muscular and the scale doesn’t apply to me, but it’s actually not true. [excerpt

Fashion Faux Pas and Cheetah Claws

It feels like winter, a time for thick socks, boots, warm coats, and… leggings? Leggings are one of those articles of clothing we completely overdo... Or UNDER-do. From a practicality standpoint, they’re marvels of winter, but why rock the thin, sheer leggings in 0° weather when you could just wear shorts? [excerpt

Brooks Better Not Come Back

Every time a new season of the Bachelorette starts, I tell myself that I won’t watch this season—that I won’t give in to the trashiness and the petty drama which is the Bachelor. But I can’t help it. Season after season I’m hooked and 17 seasons later… here I am. [excerpt

Optimization of structures on the basis of fracture mechanics and reliability criteria

Systematic summary of factors which are involved in optimization of given structural configuration is part of report resulting from study of analysis of objective function. Predicted reliability of performance of finished structure is sharply dependent upon results of coupon tests. Optimization analysis developed by study also involves expected cost of proof testing

Ferromagnetic Transition in One-Dimensional Itinerant Electron Systems

We use bosonization to derive the effective field theory that properly describes ferromagnetic transition in one-dimensional itinerant electron systems. The resultant theory is shown to have dynamical exponent z=2 at tree leve and upper critical dimension d_c=2. Thus one dimension is below the upper critical dimension of the theory, and the critical behavior of the transition is controlled by an interacting fixed point, which we study via epsilon expansion. Comparisons will be made with the Hertz-Millis theory, which describes the ferromagnetic transition in higher dimensions.Comment: 4 pages. Presentation improved. Final version as appeared in PR

Small signal characteristics of diode stabilized linear integrated devices

Small signal characteristics of diode stabilized linear integrated device

A Zero-Inflated Box-Cox Normal Unipolar Item Response Model for Measuring Constructs of Psychopathology

This research introduces a latent class item response theory (IRT) approach for modeling item response data from zero-inflated, positively skewed, and arguably unipolar constructs of psychopathology. As motivating data, the authors use 4,925 responses to the Patient Health Questionnaire (PHQ-9), a nine Likert-type item depression screener that inquires about a variety of depressive symptoms. First, Lucke’s log-logistic unipolar item response model is extended to accommodate polytomous responses. Then, a nontrivial proportion of individuals who do not endorse any of the symptoms are accounted for by including a nonpathological class that represents those who may be absent on or at some floor level of the latent variable that is being measured by the PHQ-9. To enhance flexibility, a Box-Cox normal distribution is used to empirically determine a transformation parameter that can help characterize the degree of skewness in the latent variable density. A model comparison approach is used to test the necessity of the features of the proposed model. Results suggest that (a) the Box-Cox normal transformation provides empirical support for using a log-normal population density, and (b) model fit substantially improves when a nonpathological latent class is included. The parameter estimates from the latent class IRT model are used to interpret the psychometric properties of the PHQ-9, and a method of computing IRT scale scores that reflect unipolar constructs is described, focusing on how these scores may be used in clinical contexts