A permutation π ∈ Sn is said to avoid a permutation σ ∈ Sk whenever π contains no subsequence with all of the same pairwise comparisons as σ. In 1985 Simion and Schmidt showed that the number of permutations in Sn which avoid 123, 132, and 213 is the Fibonacci number Fn+1. In this paper we generalize this result in two ways. We first show that the number of permutations which avoid 132, 213, an...

The glutamic acid moiety of N-[4-[3-(2,4-diamino-7H-pyrrolo[2,3-d]pyrimidin-5-yl)propyl]benzoyl]-L-g lutamic acid (1b, TNP-351) and the related compound (1a), was replaced with various N(omega)-acyl-, sulfonyl-, carbamoyl- and aryl-2,omega-diaminoalkanoic acids, and the inhibitory effects of the resulting products (9, 11, 14, 18, 21, 23, 25, 30, 36) on dihydrofolate reductase (DHFR), the growth...

The removal of dissolved organic carbon (DOC) is a key factor in the control disinfection by-product (DBP) formation drinking water. Ion exchange process deals with naturally negatively charged matter. A fluidized bed column test has been chosen to parallel efficiency 4 different anionic resins (Purolite PPA860S, Dowex TAN-1, Amberlite IRA-958 and IRA-410) terms DOC fraction related DBP reducti...

After online experiments with Hf (t1/2 = 76 s, decaying into Lu) at GSI [1] we performed two experiments with the multi-column-technique [2] with Rutherfordium. Rf was produced in the Cm(O, 5n) reaction at the PSI Philips Cyclotron. A 730 μg/cm Cm target was bombarded with a 0.5 μApart O beam. The KCl aerosols transporting the activities was continuously dissolved in a degasser with a yield > 8...

Iron oxide nanoparticles, probably magnetite, as-prepared and dispersed in Copaiba oil were studied by Mössbauer spectroscopy using two different spectrometers: with a low velocity resolution (512 channels) for measurements at 295 and 21K and with a high velocity resolution (4096 channels) for measurements at 295 and 90K. The fitting of all measured spectra demonstrated that usual models applie...

In a recent paper, Backelin, West and Xin describe a map φ∗ that recursively replaces all occurrences of the pattern k . . . 21 in a permutation σ by occurrences of the pattern (k − 1) . . . 21k. The resulting permutation φ∗(σ ) contains no decreasing subsequence of length k. We prove that, rather unexpectedly, the map φ∗ commutes with taking the inverse of a permutation. In the BWX paper, the ...

For the first time ever, the FPGA based cryptoprocessor presented in [12] makes it possible to compute an eta pairing at the 128-bit security level in less than one millisecond. The high performance of their cryptoprocessor comes largely from the use of the Karatsuba method for field multiplication. In this article, for the same type of pairing we propose hybrid sequential/parallel multipliers ...

| This paper presents a writer independent system for large vocabulary recognition of on-line handwritten cursive words. The system rst uses a ltering module, based on simple letter features, to quickly reduce a large reference dictionary (lexicon) to a more manageable size; the reduced lexicon is subsequently fed to a recognition module. The recognition module uses a temporal representation of...

When transferred to suspension culture on agarose-coated dishes, dedifferentiated chick embryo chondrocytes resume the chondrocyte phenotype and continue their maturation to hypertrophic chondrocytes (Castagnola, P., G. Moro, F. Descalzi Cancedda, and R. Cancedda. 1986. J. Cell Biol. 102:2310-2317). In this paper we report the identification, purification, and characterization of a low molecula...