In this paper, sharp a posteriori error estimators are derived for a class of distributed elliptic optimal control problems. These error estimators are shown to be useful in adaptive finite element approximation for the optimal control problems and are implemented in the adaptive approach. Our numerical results indicate that the sharp error estimators work satisfactorily in guiding the mesh adj...

various microbes, but the number and species of these he has not yet succeeded in determining satisfactorily. 2. This invasion, the occurrence and causes of whicli are equally obscure, may remain latent, but in certain cases may cause important modifications in the development and nutritive processes taking place in tumours, such as rapid growth, softening, and ulceration. 3. The microbes do no...

the conversion process of heavy hydrocarbons to the valuable products such as gasoline is an important operation in the oil refineries.one important process is the “fluidized catalytic cracking” (fcc).feed injection in fcc process has an important role in the selectivity and properties of the products.performance of the feed injection system is dependent on the atomizers.the size and contributi...

Abstract The authors propose a VN,p test statistic for testing finite-order serial correlation in a semiparametric varying coefficient partially linear errors-in-variables model. The test statistic is shown to have asymptotic normal distribution under the null hypothesis of no serial correlation. Some Monte Carlo experiments are conducted to examine the finite sample performance of the proposed...

Synopsis. From data in the literature on relatine rates of copolymerization it has been possible to evaluute two constants, Q and e , cheracteristic of a n individual monomer, which appear to account satisfactorily .for its behavior in copolymerization. The constant Q describes the “general monomer reactivity” and is apparently related to possibilities for stabilization in a radical adduct. The...

Modern management of congenital cataracts which interfere with vision consists of early removal of the cataract and correction of the refractive error by contact lenses or glasses (Parks and Hiles, I967; Von Noorden, Ryan, and Maumenee, I970). Skiascopic postoperative refraction of aphakic infants cannot always be performed satisfactorily because the opening is sometimes small and irregular and...

Context: Nowadays, there are sound methods and tools which implement the Model-Driven Develop-ment approach (MDD) satisfactorily. However, MDD approaches focus on representing and generating code that represents functionality, behaviour and persistence, putt ing the interaction, and more specifically the usability, i n a second place. If we aim to include usability features in a system develope...

The patient described developed 2 separate episodes of insulin resistance and on each occassion daily administration of soluble insulin in a daily dose of 980 units failed to achieve satisfactory control. Both episodes responded to steroid therapy. The maximum binding capacity of the serum for insulin was measured on each occasion; in the first episode it was grossly elevated whereas the second...

Attempts to engineer autonomic multi-agent systems, particularly those having large numbers of agents, have revealed the need for design structures and formalisms to support the construction of properties that emerge at the system level. Such emergence, like self-∗ behaviour, relies typically on intricate inter-agent interactions. This paper shows how the top-down incremental approach of Formal...

The treatment of moderate to severe hyponatraemia in patients with decompensated liver disease is unsatisfactory. We report our preliminary experience using intravenous infusion of albumin to treat this condition. Three patients with cirrhosis, ascites, and hyponatraemia responded satisfactorily to treatment; one patient with fulminant hepatitis B did not respond. Intravenous albumin infusion i...