The adaptive fixed-time control problem for nonlinear systems with time-varying actuator faults is investigated in this paper. A novel controller designed via combining the Lyapunov stability theory backstepping method. It can be adapted to both system uncertainties and unknown faults. Compared existing fault-tolerant schemes subject faults, neural networks scheme make sure that tracking error ...

a simple and rapid method has been developed for the determination of ascorbic acid in fruit and pharmaceutical products. the method is based on the measurement of the reaction rate between ammonium molybdate and ascorbic acid in acidic media. the reaction was monitored spectrophotometrically at 800 nm by fixed-time and variable-time methods. the calibration graph was linear in the range of 5 0...

PURPOSE Adaptive radiation therapy (ART) can reduce normal tissue toxicity and/or improve tumor control through treatment adaptations based on the current patient anatomy. Developing an efficient re-planning algorithm is an important step for ART. For the re-planning process, manual trial-and-error approach to fine-tune planning parameters is a time- consuming and resource-requiring task. Howev...

Razumikhin-like theorems on hyperexponential and fixed-time stability of time-delay systems are proposed for both explicitly implicitly defined Lyapunov functions. While the former method is useful analysis, latter approach more suitable control synthesis. Examples that can be stabilized hyperexponentially in fixed time given. The parameters tuning algorithm presented form linear matrix inequal...

Process planning connects product designs and the production of the designed products. It determines the production cost, quality and production cycle time. Usually one process plan is built and fixed for a unique product design before the production. However in mass customization, the possible number of unique products can be astronomical in order to satisfy diversified individual customer nee...

Indonesia has around 40% or the world‟s capacity for geothermal energy production, yet lags behind neighbors, such as the Philippines, in developing this resource. There are ambitious plans to increase production to nearly 6GW and then to 9.5GW, with the bulk of the investment coming from the private sector. With Chevron being the only overseas company currently investing in Indonesia, this pap...

Integrating, cleaning and analyzing data from heterogeneous sources is often complicated by the large amounts of data and its physical distribution which can result in poor query response time. One approach to speed up the processing is to reduce the cardinality of results – either by querying only the first tuples or by obtaining a sample for further processing. In this paper we address the pr...

A strategy that integrates an organization's marketing goals into a cohesive whole, ideally drawn from market research, focuses on the ideal product mix in order to achieve maximum profit potential; the marketing strategy is set out as a marketing plan, a good idea, method, information, object, or service that is the end result of a process and serves as a need or want satisfier. It is usually ...

Michael K. Lettau is an economist in the Office of Compensation and Working Conditions, Bureau of Labor Statistics. Thomas C. Buchmueller is an assistant professor at the Graduate School of Management, University of California, Irvine. Employers’ costs for total benefits grew roughly 50 percent faster than employee wages over the 1980–96 period, according to the Bureau of Labor Statistics Emplo...

BACKGROUND AND PURPOSE To compare conventional lateral photon-electron, fixed-beam intensity modulated radiation therapy (IMRT), coplanar and non-coplanar RapidArc for the treatment of a diffuse sebaceous gland carcinoma of the scalp. METHODS Comprehensive dosimetry comparisons were performed among 3D-CRT, IMRT and various RapidArc plans. Target coverage, conformity index (CI), homogeneity in...