System performance evaluation

Historical DataBase Subsystem We have discussed the use of on-hne databases. An historical database is built similar to an on-line database. Unlike their on-line counterparts, the information stored in a historical database is not normally accessed directly by other subsystems for process control and monitoring. Periodic reports and longterm trends are generated based on the archived data. The reports are often used for long-term planning and system performance evaluations such as statistical process (quality) control. The trends may be used to detect process drifts or to compare process variations at different times. 

Comas J, Rodriguez-Roda I, Poch M, Gemaey KV, Rosen C, Jeppsson U (2006) Extension of the rWA/COST simulation benchmark to include expert reasoning for system performance evaluation. Water Sci Technol 53(4—5) 331-339... 

Ranky, P. G. (2003), A real-time manufacturing/assembly system performance evaluation and control model with integrated sensory feedback processing and visualization, Assembly Automation. 

Stoots, C.M., J.E. O Brien, M.G. McKellar, G.L. Hawkes, J.S. Herring (2005), Engineering Process Model for High-temperature Steam Electrolysis System Performance Evaluation , AIChE 2005 Annual Meeting, Cincinnati, OH, USA, 30 October-4 November. 

Stoots, C.M. (2005), Engineering Process Model for High-temperature Electrolysis System Performance Evaluation, Idaho National Laboratory, June. 

A performance improvement effort will require time and resources for data collection and analysis. If the metrics data collection effort is too large for available resources, it is likely that specific data will not be captured and that could impact the validity of the system performance evaluations. Any data collection effort needs appropriate resources to execute the designed plan effectively. Sometimes insufficient or incomplete data can be worse than having no data if the reported data leads to false conclusions. 

Documentation and communication of information and decisions Product and system performance evaluation and improvement... 

Chemical sensors will be used and control strategies developed to ensure that all energetic materials are fully hydrolyzed and that process and operator safety is maintained. Other objectives of the system performance evaluation are summarized below (Bonnett, 2000) ... 

TherreU BL, et al. Newborn Screening System Performance Evaluation Assessment Scheme (PEAS). Semin Perinatol. 2010 34(2) 105-20. 

Various evaluations, ranging from the basic components to the entire system, are needed in the development of a fuel cell system. The evaluation may include physical, mechanical, chemical, electrochemical, electrical, and software systems. Performance evaluation is short while durability evaluation may take hours to years. Accelerated evaluation can be utilized once a baseline is established, but establishing the baseline itself may take years. 

Yinhai Zhu, Wenjian Cai, Yanzhong Li, Changyun Wen, Anode gas recirculation behavior of a fuel ejector in hybrid solid oxide fuel cell systems Performance evaluation in three operational modes. Journal of Power Sources 185 (2008) 1122-1130, Xi an, China, Singapore, 23 July 2008... 

Keywords gas distribution networks, non time-homogeneous systems, performance evaluation, Markov regenerative processes, transient stochastic state classes. 

From an economic point of view, the criterion of the transport system performance evaluation is the direct cost of transportation (Mashayekh et al. 2011). Taking into account previously formulated markings criterion can be given as follows ... 

A modeling framework is presented for a track block section. System degradation and system operation are taken into account for the system performance evaluation. A hierarchical CPN model is built according to this framework, which consists of component working model, deterioration model, inspection model and maintenance model. Monte Carlo simulations are carried out to obtain the solutions. 

Zhang, T., K. Chakrabarty, and R. B. Fair. 2002. System performance evaluation with systemC for two PCR microelectrofluidic systems. Proc. Int. Conf. Model. Simul. Microsyst. 48-53. 

---