The bifunctional P protein (chorismate mutase : prephenate dehydratase) from Acinetobacter calcoaceticus has been purified. It was homogeneous in polyacrylamide gels and was more than 95% pure on the basis of the immunostaining of purified P protein with the antibodies raised against the P protein. The native enzyme is a homodimer ( M , = 91 000) composed of 45-kDa subunits. A twofold increase ...

Grid computing can be considered large-scale distributed cluster and parallel network processing. The two most important issues in managing user work are resource allocation scheduling of required resources. When jobs submitted, they managed by intermediaries who find allocate the right After stage, scheduled on existing resources according to user's In grid systems with traditional scheduling,...

Decisions are often based on the results of quantitative analysis. To gain confidence in these results, some indication of their quality is needed. Measurement uncertainty, as proposed by the International Organization for Standardization (ISO), is a way to express this quality. Most measurement techniques compare references and therefore need to be calibrated. Usually least squares methods ign...

Recurrent neural networks of analog units are computers for realvalued functions. We study the time complexity of real computation in general recurrent neural networks. These have sigmoidal, linear, and product units of unlimited order as nodes and no restrictions on the weights. For networks operating in discrete time, we exhibit a family of functions with arbitrarily high complexity, and we d...

Model studies are presented which demonstrate that reactions proceeding by a random ternary-complex mechanism may exhibit most pronounced deviations from Michaelis-Menten kinetics even if the reaction is effectively ordered with respect to net reaction flow. In particular, the kinetic properties and reaction flow characteristics of glucokinase can be accounted for in such terms. It is concluded...

Main decision-making problems can be described into choice, ranking or sorting of a set of alternatives or solutions. The principle of Electre TRI (ET) method is to sort alternatives ai according to criteria g j into categories Ch whose lower and upper limits are respectively bh and bh+1. The sorting procedure is based on the evaluations of outranking relations based firstly on calculation of p...

background: person-organization fit is an effective factor for recruiting, selection, and retention of human resources in organizations. objective: this study examined the correlation between person-organization fit and performance indicators used in healthcare in the hospitals affiliated with qazvin university of medical sciences (qums). methods: this descriptive cross-sectional study was cond...