Lightweight single-layer slotted waveguide array antennas are fabricated using plastic materials with metal-plating. A plastic material that has good heat-radiation properties is investigated. Three types of antennas are fabricated by milling, using ABS resin, heat-radiating plastic, and aluminum alloy. In measurements, all three types of antennas are confirmed to have almost the same VSWR and ...

The Sharpe (1964), Lintner (1965) and Black (1972) Capital Asset Pricing Model (CAPM) is considered one of the foundational contributions to the practice of finance. The model postulates that the equilibrium rates of return on all risky assets are a linear function of their covariance with the market portfolio. Recent work by Fama and French (1996, 2006) introduce a Three Factor Model that ques...

This paper tests risk and overreaction explanations of the book-to-market equity (BE/ME) premium in returns by focusing on the joint relationship between distress and BE/ME. Within the most distressed firms, the difference in returns between high and low book-to-market securities is more than twice as large as that in non-distressed firms, and is largely driven by extremely low returns on firms...

and we acknowledge the contributions of participants at these conferences. All errors or omissions are our own. Abstract Were Australian Internet stock returns unusual? We examine daily returns on a primary sample of the 21 Australian Internet stocks in the Merrill Lynch (Australian) Internet Stock Index at the climax of the boom-bust period, between 21 September 1999 and 20 September 2000. App...

As documented in Fama and French (1992), small firms’ expected equity returns are usually larger than big firms.’ Notably, Fama and French (1995) attributed this return pattern, dubbed as size premium, to a notion that small firms are assigned a higher risk premium because they face greater risk of distress. However, “distress anomaly” papers including Campbell, Hilscher, and Szilagyi (2008) em...

BACKGROUND Herpes zoster (HZ) occurs mainly in the elderly and Korea is rapidly becoming an aging society. Therefore, it is important to know the immune status against varicella-zoster virus (VZV) in Korean adults to prevent the disease. OBJECTIVE The aim of this study was to survey the immune status of Korean adults over 40 years of age against VZV. METHODS Antibody titer was measured usin...

Differentiation of specialized cell types in multicellular organisms requires orchestrated actions of cell fate determinants. Stomata, valves on the plant epidermis, are formed through a series of differentiation events mediated by three closely related basic-helix-loop-helix proteins: SPEECHLESS (SPCH), MUTE, and FAMA. However, it is not known what mechanism coordinates their actions. Here, we...

Foreign exchange market efficiency is commonly investigated by Fama-regression tests of uncovered interest parity (UIP). In this paper, we conjecture a speculative UIP relationship which implies that exchange rate changes comprise a time-varying risk component in addition to the forward premium. This suggests that the forward premium anomaly reported in previous research potentially stems from ...

In the traditional portfolio model, investors calculate the expected return of assets and the covariance matrix for optimal asset allocation. This paper divides market sentiment period into three states and selectes the securities in the Chinese stock market to construct portfolios. We implement both the Fama-French five-factor model and the robust median covariance matrix approach for predicti...