Mitsubishi

About: Mitsubishi is a company organization based out in Tokyo, Japan. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 53115 authors who have published 54821 publications receiving 870150 citations. The organization is also known as: Mitsubishi Group of Companies & Mitsubishi Companies.

Equivalent Black volatilities

Abstract: We consider European calls and puts on an asset whose forward price F(t) obeys dF(t)=α(t)A(F)dW(t,) under the forward measure. By using singular perturbation techniques, we obtain explicit algebraic formulas for the implied volatility σ B in terms of today's forward price F 0 ≡ F(0), the strike K of the option, and the time to expiry tex . The price of any call or put can then be calculated simply by substituting this implied volatility into Black's formula. For example, for a power law (constant elasticity of variance) model dF(t)=aFβ dW(t) we obtain σ B = a/f aυ 1− β {1 + (1−β)(2+β)/24 (F 0 − K/f aυ)2 + (1 − β)2/24 a 2 tex /f aυ 2−2β +…} where f aυ = ½(F 0 + K). Our formula for the implied volatility is not exact. However, we show that the error is insignificant, rarely approaching 1/1000 of the time value of the option. We also present more accurate (albeit more complicated) formulas which can be used for the implied volatility.

Electronic device using zirconate titanate and barium titanate ferroelectrics in insulating layer

Abstract: In an electronic device using lead zirconate titanate (PZT) or lanthanum lead zirconate titanate (PLZT) as the main insulating material, a PZT film or a PLZT film is formed on a sub-insulating layer consisting essentially of lead titanate, lanthanum lead titanate, barium titanate, strontium titanate, barium strontium titanate, lead zirconate, or lanthanum lead zirconate. In an MIS structure, a semiconductor, the sub-insulating layer, the PZT film and metal are deposited in order. In a capacitor, the sub-insulating layer and the PZT film are sandwiched between a pair of electrodes. The sub-insulating layer improves crystallinity of PZT or PLZT, and the dielectric constant. An oxide of Pb, La, Zr or Ti can be added as the sub-insulating layer in order to further suppress current leakage.

IL-9 Enhances the Growth of Human Mast Cell Progenitors Under Stimulation with Stem Cell Factor

Abstract: We examined the effects of IL-9 on human mast cell development from CD34 + cord blood (CB) and peripheral blood cells in serum-deprived cultures IL-9 apparently enhanced cell production under stimulation with stem cell factor (SCF) from CD34 + CB cells A great majority of the cultured cells grown with SCF + IL-9 became positive for tryptase at 4 wk In methylcellulose cultures of CD34 + CB cells, IL-9 increased both the number and size of mast cell colonies grown with SCF Furthermore, SCF + IL-9 caused an exclusive expansion of mast cell colony-forming cells in a 2-wk liquid culture of CD34 + CB cells, at a level markedly greater than for SCF alone Clonal cell cultures and RT-PCR analysis showed that the targets of SCF + IL-9 were the CD34 + CD38 + CB cells rather than the CD34 + CD38 − CB cells IL-9 neither augmented the SCF-dependent generation of progeny nor supported the survival of 6-wk-cultured mast cells Moreover, there was no difference in the appearance of tryptase + cells and histamine content in the cultured cells between SCF and SCF + IL-9 The addition of IL-9 increased numbers of mast cell colonies grown with SCF from CD34 + peripheral blood cells in children with or without asthma It is of interest that mast cell progenitors of asthmatic patients responded to SCF + IL-9 to a greater extent than those of normal controls Taken together, IL-9 appears to act as a potent enhancer for the SCF-dependent growth of mast cell progenitors in humans, particularly asthmatic patients

Guidelines for the use of biochemical markers of bone turnover in osteoporosis (2004).

Abstract: A definition of osteoporosis was agreed upon at the 1993 consensus conference held in Hong Kong. It states that osteoporosis is “characterized by low bone mass and the microarchitectural deterioration of bony tissue, with a consequent increase in bone fragility and susceptibility to fracture.” This definition had been internationally used without revision until recently, when the definition was significantly changed at a National Institutes of Health (NIH) consensus conference in 2000 [1]. According to the consensus statement, osteoporosis is defined as “a skeletal disorder characterized by compromised bone strength predisposing a person to an increased risk of fracture.” Bone strength is determined by integrating bone mineral density (BMD) and bone quality. BMD is expressed as grams of mineral per area or volume, and, currently, BMD is defined by the individual peak bone density and the resorption rate from the peak. Bone quality is determined by characteristics of the bone matrix, such as microarchitecture, bone turnover, microdamage accumulation, the degree of calcification, and collagen [2,3]. Currently, it is thought that bone quality may not be clinically assessed by measures other than the determination of bone metabolism with biochemical markers of bone turnover. The change in definition may be the result of more recent findings [4], one that demonstrates bone fractures routinely occur despite patients having modest BMD levels, and another that has shown no significant reduction in the risk of a fracture occurring in patients taking one of the two standard medications, one that significantly increases BMD and the other that moderately increases it.