The relative gain array (RGA) and condition number are commonly used tools in controllability analysis. In this paper we present new results that link these measures to control performance, measured in terms of the output sensitivity function with input and output uncertainty.

Plant morphogenesis is profoundly influenced by light (a phenomenon known as photomorphogenesis). For example, light inhibits seedling hypocotyl growth via activation of phytochromes and additional photoreceptors. Subsequently, information is transmitted through photoreceptor-linked signal transduction pathways and used (via previously unknown mechanisms) to control hypocotyl growth. Here we sh...

Ectopic expression in Arabidopsis of a pea (Pisum sativum) cDNA (2ox2) encoding a gibberellin (GA) 2-oxidase (PsGA2ox2), involved in the deactivation of biologically active GAs, has been used to establish a role for GAs in promoting pollen tube growth. One line, 35S:2ox2/28c, when homozygous for the transgene, exhibits a novel small fruit phenotype. The 28c transgene reduces pollen tube growth,...

Mungbean (Vigna radiata (L.) R. Wilczek var. radiata) yield is dramatically constrained by powdery mildew (PM) caused Sphaerotheca phaseoli (Z.Y. Zhao) U. Braun (1985), which considerably prevalent in the cool-dry season of production South, East, and Southeast Asia countries including Thailand. Exploitation varieties resistant to disease crucial meet sustainable production. A population 64 F2:...

Improving energy efficiency is probably the most generic issue for the process industry today, and process integration is a common tool to successfully achieve this. However, an increased level of process integration, usually implemented by re-circulation and other physical feedback structures, can increase the complexity of the dynamics drastically. This, in turn, implies increased control dif...

این پژوهش به طراحی ساختار کنترلی و مدلسازی پویای یک برج جداسازی نفت خام بر مبنای آرایه بهره نسبی (rga) و آرایه بهره نرمال شده نسبی (rnga) می پردازد. انتخاب ساختار کنترل چند متغیره در حالت غیرمربعی با استفاده از داده های واقعی برج جداسازی نفت خام تاکنون ارائه نشده است. در این تحقیق، برج جداسازی در دو ظرفیت عملیاتی 40,000 و 60,000 بشکه در روز مدلسازی شد تا عملکرد کنترلی ساختارهای پیشنهادی بررسی ش...

Recent issues of ARE Update featured articles evaluating the failures of two California marketing cooperatives, Tri Valley Growers (TVG) and Rice Growers Association (RGA). Along with Blue Anchor’s dissolution and Calavo’s conversion, these combined events have created doubts about the future of cooperatives in California agriculture. Restructured forms of cooperatives are emerging. For example...