A defining stylized fact associated with exchange-rate-based stabilization programs is that their initial phase is characterized by several years of continuous expansion in private consumption and a gradual appreciation of the real exchange rate. This paper shows that a large class of standard optimizing models is unable to account for this empirical regularity. In particular, models in this cl...

The PEGS (Production and Environmental Generic Scheduler) program is a new generic scheduling program for manufacturing companies. It includes sort and search algorithms and can operate on the basis of elapsed time or economic values. Program performance is compared to a series of published benchmarks. The case study presented here illustrates the use of PEGS for a flow shop configuration at a ...

The present work concerns on the investigation of the role of polyethylene glycols (PEGs) as masking agent for amelioration of extraction-separation of La(III), Eu(III) and Er(III) ions by the acidic extractant bis(2-ethylhexyl)phosphoric acid (DEHPA). The studied solvent extraction system is based on the combination of chelating effect of DEHPA in the organic phase on the one hand, and the bin...

Genomic imprinting is an epigenetic phenomenon leading to parent-of-origin specific differential expression of maternally and paternally inherited alleles. In plants, genomic imprinting has mainly been observed in the endosperm, an ephemeral triploid tissue derived after fertilization of the diploid central cell with a haploid sperm cell. In an effort to identify novel imprinted genes in Arabid...

Photosynthesis is sensitive to environmental stresses. How nuclear and plastid genome coordinate to cope with abiotic stress is not well understood. Here we report that ATHB17, an Arabidopsis HD-Zip transcription factor, coordinates the expression of nuclear encoded photosynthetic genes (NEPGs) and plastid encoded genes (PEGs) in response to abiotic stress. ATHB17-overexpressing plants display ...

Injectable and implantable porosified silicon (pSi) carriers and devices for prolonged and controlled delivery of biotherapeutics offer great promise for treatment of various chronic ailments and acute conditions. Polyethylene glycols (PEGs) are important surface modifiers currently used in clinic mostly to avoid uptake of particulates by reticulo-endothelial system (RES). In this work we show ...

For the Tower of Hanoi problem, it has been found that it is possible to construct a nice graph with legal states of the Tower of Hanoi as the vertices and legal moves between legal states as the edges between corresponding vertices. This “Hanoi graph” we denote by Hk n for k pegs and n disks. Our motivation is to describe the properties of this graph for k ≥ 4 and to describe a class of graphs...

The Prader-Willi syndrome/Angelman syndrome (PWS/AS) imprinted domain is regulated by a bipartite imprinting control center (IC) composed of a sequence around the SNRPN promoter (PWS-IC) and a 880-bp sequence located 35 kb upstream (AS-IC). The AS-IC imprint is established during gametogenesis and confers repression upon PWS-IC on the maternal allele. Mutation at PWS-IC on the paternal allele l...