Intensity modulation/direct detection (IM/DD) optical key distribution (OKD) is a method to generate secret whose security against passive eavesdropping guaranteed by the shot noise inherent photodetection process. Here effects of intensity-dependent symbol shape distortion on IM/DD OKD are investigated assuming that eavesdropper can implement temporal mode demultiplexing using e.g. quantum pul...

Intensity modulation and direct detection (IM/DD) is a cost-effective optical communication strategy which finds wide applications in fiber communication, free-space optical communication, and indoor visible light communication. In IM/DD, orthogonal frequency division multiplexing (OFDM), originally employed in radio frequency communication, is considered as a strong candidate solution to comba...

Methods Data were obtained from the electronic health record (EHR) for selected orthopedic inpatient admissions during 2010. Four orthopedic populations were identified by APR-DRG categories: 1) hip replacement, 2) knee replacement, 3) back surgery, and 4) medical back pain. Receipt of IM therapies was the treatment of interest. Primary outcomes were change in patient reported pain and anxiety....

This article presents a methodology to determine the optimal intensity of Incident Management (IM) on the road in order to reduce time losses of road users. We combine the probability of time loss because of an incident with the expected average time loss in the cost function of the road user. A new element is that the elasticity of demand is included in the model. The change in welfare because...

In Intensity Modulator/Direct Detection (IM/DD) optical OFDM systems, the high peak-to-power average ratio (PAPR) will cause signal impairments through the nonlinearity of modulator and fiber. In this paper, a joint PAPR reduction technique based on Hadamard transformation and clipping and filtering using DCT/IDCT transform has been proposed for mitigating the impairments in IM/DD optical OFDM ...

In this paper, we provide a model-free test for asymmetric correlations which suggest stocks tend to have greater correlations with the market when the market goes down than when it goes up. In addition, we evaluate the economic significance of asymmetric correlations by answering the question that what is the utility gain for an investor who switches from a belief of symmetric correlations int...

We study the predictive power of approximately 2.5 million stock picks submitted by individual users to the “CAPS” website run by the Motley Fool company (www.caps.fool.com). These picks prove to be surprisingly informative about future stock prices. Indeed, a strategy of shorting stocks with a disproportionate number of negative picks on the site and buying stocks with a disproportionate numbe...

The fluence map optimization (FMO) problem is a core problem in intensity modulated radiation therapy (IMRT) treatment planning. Although it has been studied extensively for site-specific treatment planning, few studies have examined efficient computational methods for solving it for intensity modulated total marrow irradiation (IM-TMI) planning; few studies have also looked at exploiting prior...

Fama and French [2002. The equity premium. Journal of Finance 57, 637–659] estimate the equity premium using dividend growth rates to measure expected rates of capital gain. We apply their method to study the value premium. From 1945 to 2005, the expected value premium is on average 6.1% per annum, consisting of an expected dividend growth component of 4.4% and an expected dividend price ratio ...

Article history: Received 12 June 2012 Received in revised form 22 March 2013 Accepted 8 April 2013 Available online 28 April 2013 I use the second Hansen and Jagannathan (1997) distance measure (HJD) to examine whether index-based models similar to Cremers, Petajisto, and Zitzewitz (forthcoming) are more reliable benchmark models of expected returns than the Fama and French (1993) and Carhart ...