Technology has been the engine of growth for the United States economy over the last decade, and it is reasonable to expect that appropriate selection and management of technology within the firm would continue to be highly critical to its success well into the future. Operations managers constantly struggle to seek answers to the right set of managerial actions that can be used to leverage tec...

Background: To determine the prevalence of depression among Japanese people with rheumatoid arthritis (RA) and explore the relationships between depression and an array of variables. Methods: Nation-wide, cross-sectional online survey (n = 500) of people with RA including the Patient Health Questionnaire (PHQ-9) to measure the presence and severity of depressive symptoms were performed. Results...

This paper investigates whether the skewness of firm fundamentals is informative about future firm performance and stock returns. We present two distinct preference-free theoretical models of firm fundamentals, both of which imply a positive relation between the skewness of firm fundamentals and expected stock return. Consistent with this implication, we show empirically that the skewness measu...

In this supplementary appendix, we use a numerical example to illustrate the model’s predictions for the same measures of attention, portfolio dispersion, and performance as the ones we measure in the data. The goal of this exercise is to confirm that the model makes the same qualitative predictions for these observables as for the slightly different measures of attention allocation, portfolio ...

This paper provides a unified setting for factor models applied to panels of qualitative observations. This setting includes as special cases the single risk factor model and its multiple factor extensions used in credit risk analysis, the stochastic migration models used for rating dynamics, and the factor models for prospective mortality tables. We consider the behavior of these models when t...

Actinic keratoses (AKs) are common cutaneous lesions that develop as a result of ultraviolet (UV) radiation damage.1 Risk factors associated with AKs include advanced age, male gender, high degree of sun and/or artificial UV exposure, and fair skin.2 Epidemiological studies within Europe are limited and have provided highly variable estimates of AK point prevalence (1--38%).2--6 Cumulative sun ...

In this article, we show how to analyze analytically the equilibrium policies and prices in an economy with a stochastic investment opportunity set and incomplete financial markets, when agents have power utility over both intermediate consumption and terminal wealth, and face portfolio constraints. The exact local comparative statics and approximate but analytical expression for the portfolio ...

We propose a broad measure of liquidity for the overall financial market by exploiting its connection with the amount of arbitrage capital in the market and the potential impact on price deviations in US Treasurys. When arbitrage capital is abundant, we expect the arbitrage forces to smooth out the Treasury yield curve and keep the dispersion low. During market crises, the shortage of arbitrage...

Theory suggests that the risk of infrequent yet extreme events has a large impact on asset prices. Testing models of this hypothesis remains a challenge due to the difficulty of measuring tail risk fluctuations over time. I propose a new measure of time-varying tail risk that is motivated by asset pricing theory and is directly estimable from the cross section of returns. My procedure applies H...

Routine entomological monitoring data are used to quantify the abundance of Ae. aegypti. The public health utility of these indicators is based on the assumption that greater mosquito abundance increases the risk of human DENV transmission, and therefore reducing exposure to the vector decreases incidence of infection. Entomological survey data from two longitudinal cohort studies in Iquitos, P...