Central to the ABCE model of flower development is the antagonistic interaction between class A and class C genes. The molecular mechanisms underlying the A-C antagonism are not completely understood. In Arabidopsis thaliana, miR172 is expressed in the inner floral whorls where it downregulates the class A gene APETALA 2 (AP2). However, what controls this predominantly inner whorl-specific expr...

A recente observação das ondas gravitacionais corrobora uma das mais interessantes previsões da relatividade geral: os buracos negros. Pois as ondas gravitacionais detectadas pela colaboração LIGO ajustam-se muito bem dentro da teoria da relatividade geral como um fenômeno produzido pela colisão de dois buracos negros. Sendo assim, a realidade f́ısica dos buracos negros parece ainda mais inegáve...

O receptor de ácido retinóico é um fator de transcrição no núcleo celular que se liga ao ácido retinóico. A esfera de atuação do ligante do receptor gama do ácido retinóico humano (seu complexo com ácido retinóico e sua interação com a proteína I ácido retinóico ligante) foi estudada por espectroscopia de massa. O caminho do ácido retinóico a partir do doador até o receptor foi monitorado on-li...

A detailed theoretical analysis is presented of what five utility representations – subjective expected utility (SEU), rank-dependent (cumulative or Choquet) utility (RDU), gains decomposition utility (GDU), rank weighted utility (RWU), and a configural-weight model (TAX) that we show to be equivalent to RWU – say about a series of independence properties, many of which were suggested by M. H. ...

In this chapter we survey asset pricing in dynamic economies with heterogeneous, rational traders. By ‘rational’ we mean traders whose decisions can be described by preference maximization, where preferences are restricted to those which have an subjective expected utility (SEU) representation. By ’heterogeneous” we mean SEU traders with different and distinct payoff functions, discount factors...

SRAM-based field programmable gate arrays (FPGAs) are vulnerable to a single event upset (SEU), which can be induced by radiation effects. Although an FPGA is susceptible to SEUs, these faults can be corrected as a result of its reconfigurability. In this work, we propose techniques for SEU mitigation and recovery of a soft-core processor using triple modular redundancy (TMR) and partial reconf...

A detailed theoretical analysis is presented of what five utility representations — subjective expected utility (SEU), rank-dependent (cumulative or Choquet) utility (RDU), gains decomposition utility (GDU), rank weighted utility (RWU), and a configural-weight model (TAX) that we show to be equivalent to RWU — say about a series of independence properties, many of which were suggested by M.H.Bi...

Este artigo propõe uma análise comparativa dos métodos SCAN e BESAG&NEWELL definidos como testes genéricos de conglomerados espaciais. O objetivo do trabalho é explorar as peculiaridades de cada método avaliando o seu desempenho e o seu poder de identificação. O método BESAG&NEWELL necessita do ajuste de parâmetros por parte do usuário, sendo sensı́vel à escolha dos mesmos. O resultado final é a...

Radiation test results and analyses are presented for ultra-low power Reed Solomon encoder circuits that are being considered for use on the Space Technology 5 (ST5) mission. The total ionizing dose tolerance is in excess of 100 krad(Si) and is due to the low supply voltage and the use of back-bias, which suppresses radiation-induced leakage currents in the n-channel devices. The circuits do no...

SEU error rates in the CMS tracker environment have been approximated with Monte Carlo simulations. The estimated upset rates for a submicron technology are 8.3 10-7 upsets/(bit s) at 4.9cm and 1.1 10-8 upsets/(bit s) at 49cm from the beam line, respectively. Comparison of simulation data with experimental proton irradiation benchmarks points to a tenfold underestimate of the actual rate. All t...