Cutler and Katz (1991,1992), Slesnick (1994) and Attanasio and Davis (1996) looked at di¤erent dimensions of inequality in consumption. These papers all used the CEX (in an era in which the measurement error issues were less known than they are today). Slesnick (1994) found that the increase in inequality in consumption were much more modest than those in income and stressed some of the reasons...

– The module extraction problem: given a terminology T1 and a signature Σ, extract from T1 a minimal self-contained terminology T0 such that T1 and T0 imply the same dependencies between Σ-terms. – The logical diff problem: given a signature Σ and two versions T0 and T1 of a terminology, check whether T0 and T1 are logically different in the sense that they do not imply the same dependencies be...

In this study, a cation-exchange resin (CEX) of the K(+)-form, i.e., an enhancer resin, is used as a postcolumn conductimetric enhancer in the ion-exclusion chromatography of aliphatic carboxylic acids. The enhancer resin is filled in the switching valve of an ion chromatograph; this valve is usually used as a suppressor valve in ion-exchange chromatography. An aliphatic carboxylic acid (e.g., ...

BACKGROUND Both research and clinical medicine requires similar attributes of efficiency, diligence and effective teamwork. Furthermore, residents must succeed at scholarship and patient care to be competitive for fellowship training. It is unknown whether research productivity among residents is related to broad measures of clinical achievement. Our goal was to examine associations between the...

INTRODUCTION Feedback cards are recommended as a feasible tool for structured written feedback delivery in clinical education while effectiveness of this tool on the medical students' performance is still questionable.  The purpose of this study was to compare the effects of structured written feedback by cards as well as verbal feedback versus verbal feedback alone on the clinical performance ...

A number of empirical studies have used the Panel Study of Income Dynamics (PSID) to examine the behavior of consumption at the household level [Hall and Mishkin (1982), Altonji and Siow (1985) Hotz, Kydland and Sedlacek (1985), Zeldes (1985) Altonji (1986)]. Because the PSID does not report total consumption, these researchers have used instead food expenditures as a proxy for consumption. The...

The function of the X protein in the life cycle of mammalian hepadnaviruses is unclear. Based on tissue culture experiments it has been suggested that this protein represents a transcriptional transactivator which might be essential for the expression of the viral core gene. Here we have examined whether the activity of the human hepatitis B virus (HBV) core gene in vivo depends on X coexpressi...