نتایج جستجو برای: c13
تعداد نتایج: 1233 فیلتر نتایج به سال:
This Paper describes a procedure for constructing theory restricted prior distributions for BVAR models. The Bayes Factor, which is obtained without any additional computational effort, can be used to assess the plausibility of the restrictions imposed on the VAR parameter vector by competing DSGE models. In other words, it is possible to rank the amount of abstraction implied by each DSGE mode...
We derive a closed form expression for the asymptotic distribution of the LIML estimator for the coefficients of both endogenous and exogenous variables in a partially identified linear structural equation. We extend previous results of Phillips (1989) and Choi and Phillips (1992) where the focus was on IV estimators. We show that partial failure of identification affects the LIML in that its m...
The paper suggests a CUSUM-type test for time-varying parameters in a recently proposed spatial autoregressive model for stock returns and derives its asymptotic null distribution as well as local power properties. As can be seen from Euro Stoxx 50 returns, a combination of spatial modelling and change point tests allows for superior risk forecasts in portfolio management. JEL Classification: C...
The cross-reactivity between the tumor-specific trans plantation antigen of tumors induced by adenovirus types 3 and 14, on one hand, and type 12, on the other, was investigated by testing immunosensitivity and immunogenicity. It was found that (a) serum of mice im munized against syngeneic adeno 12 tumors was cytotoxic to hamster adeno 14 and adeno 3 tumor cells, but not to BHK-C13 control cel...
Canonical Correlation and Assortative Matching: A Remark In the context of the Beckerian theory of marriage, when men and women match on a singledimensional index that is the weighted sum of their respective multivariate attributes, many papers in the literature have used linear canonical correlation, and related techniques, in order to estimate these weights. We argue that this estimation tech...
We develop a selective entry model for first-price auctions that nests several models earlier proposed in the literature, and features a pro-competitive selection effect. The selection effect is shown to be nonparametrically identifiable, and a nonparametric test for its presence is proposed. In the empirical application to highway procurement, we find that the selection effect overwhelms the a...
A novel C,D-spirodioxene taxoid (6) was prepared from paclitaxel (1a), with the key steps including an unexpected Pd-mediated ring cyclization. The anti-tubulin activity of 6 was decreased relative to that of 1a and a previously reported C,D-spirolactone taxane (5). These observations could be rationalized on the basis of molecular modeling results. To the best of our knowledge, this is the fir...
The barrier energies for isomerization and fragmentation were measured for a series of retinal chromophore derivatives using a tandem ion mobility spectrometry approach. These measurements allow us to quantify the effect of charge delocalization on the rigidity of chromophores. We find that the role of the methyl group on the C13 position is pivotal regarding the ground state dynamics of the ch...
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