T he objectives of this article are two-fold: First, to present the problem of joint source and channel (JSC) coding from a graphical model perspective and second, to propose a structure that uses a new graphical model for jointly encoding and decoding a redundant source. In the first part of the article, relevant contributions to JSC coding, ranging from the Slepian-Wolf problem to joint decod...

The low-density attack proposed by Lagarias and Odlyzko is a powerful algorithm against the subset sum problem. The improvement algorithm due to Coster et al. would solve almost all the problems of density < 0.9408... in the asymptotical sense. On the other hand, the subset sum problem itself is known as an NP-hard problem, and a lot of efforts have been paid to establish public-key cryptosyste...

1. Human total HDL (high-density lipoprotein), HDL2 and HDL3 were labelled in vitro by incubation with lipoproteindeficient serum (LPDS) which contained either [3H]cholesteryl oleate or [14C]cholesterol under different conditions. The lipoproteins were then subfractionated by heparin-Sepharose column chromatography, and three subfractions (A, B and C) were successively eluted from each preparat...

Matter with an equation of state p = −ρ/3 may arise in certain scalar field theories, and the energy density of this matter decreases as a with the scale factor a of the Universe. In this case, the Universe could be closed but still have a nonrelativistic-matter density Ω0 < 1. Furthermore, the cosmic microwave background could come from a causally-connected region at the other side of the Univ...

Human low density lipoproteins radiolabeled with I transfer across confluent monolayers of cultured porcine pulmonary artery endothelial cells. The amount transferred was dependent on the low density lipoprotein concentration and was not saturable at concentrations up to 300 fig protein per 0.5 ml medium. Gel filtration showed that more than 90% of the I which crossed the endothelial monolayer ...

Utilization of polymer products for outdoor applications is continuously increasing. So the stability of polymers against environmental degradation became top of interests for many researchers. The effect of environmental elements on the polymers stability has been studied, but individually. A solution against an environmental element may conflict with a solution against other element. Therefor...

Temporary ponds where many amphibians breed experience a gradual desiccation that leads to growing larval densities, which can reduce tadpole survival rates and increase cannibalistic interactions among carnivorous salamander larvae. Concentrations of many agrochemicals, including nitrogenous fertilizers, can also increase as the water volume decreases. We analyzed the effects of ammonium nitra...

BACKGROUND AND OBJECTIVES Darker skin pigmentation and aging are known factors influencing the body's ability to synthesize adequate amounts of vitamin D (25OHD). The objective of this study is to determine the 25OHD insufficiency in elderly African American females of low socioeconomic status (SES) in a southern latitude during springtime sun exposure. METHODS Patients >or= 70 years old who ...

Prolonged exposure to hand-held vibrating tools may cause a hand-arm vibration syndrome (HAVS), sometimes with individual susceptibility. The neurological symptoms seen in HAVS are similar to symptoms seen in patients with carpal tunnel syndrome (CTS) and there is a strong relationship between CTS and the use of vibrating tools. Vibration exposure to the hand is known to induce demyelination of...

Crystallinities of high-density polyethylene (HDPE) films containing various amounts of an oxo-biodegradable additive (HES-W) were investigated immediately after preparation and 6 weeks after ultraviolet (UV) irradiation (λ=254 nm). HDPE granules were mixed with oxo-biodegradable masterbatch in a twin-screw extruder and the extrudates were converted into films with thicknesses of 35±5 micromete...