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System Errors (system + error)

Distribution by Scientific Domains
Medical Sciences60%
Engineering40%

Selected Abstracts

System error in the surgical count

ANZ JOURNAL OF SURGERY, Issue 10 2002
George Kiroff
No abstract is available for this article. [source]

Structural damage detection using the optimal weights of the approximating artificial neural networks

EARTHQUAKE ENGINEERING AND STRUCTURAL DYNAMICS, Issue 2 2002
Shih-Lin Hung
Abstract This work presents a novel neural network-based approach to detect structural damage. The proposed approach comprises two steps. The first step, system identification, involves using neural system identification networks (NSINs) to identify the undamaged and damaged states of a structural system. The partial derivatives of the outputs with respect to the inputs of the NSIN, which identifies the system in a certain undamaged or damaged state, have a negligible variation with different system errors. This loosely defined unique property enables these partial derivatives to quantitatively indicate system damage from the model parameters. The second step, structural damage detection, involves using the neural damage detection network (NDDN) to detect the location and extent of the structural damage. The input to the NDDN is taken as the aforementioned partial derivatives of NSIN, and the output of the NDDN identifies the damage level for each member in the structure. Moreover, SDOF and MDOF examples are presented to demonstrate the feasibility of using the proposed method for damage detection of linear structures. Copyright © 2001 John Wiley & Sons, Ltd. [source]

Nuclear power plant communications in normative and actual practice: A field study of control room operators' communications

HUMAN FACTORS AND ERGONOMICS IN MANUFACTURING & SERVICE INDUSTRIES, Issue 1 2007
Paulo V.R. Carvalho
The safety and availability of sociotechnical critical systems still relies on human operators, both through human reliability and human ability to handle adequately unexpected events. In this article, the authors focus on ergonomic field studies of nuclear power plant control room operator activities, and more specifically on the analysis of communications within control room crews. They show how operators use vague and porous verbal exchanges to produce continuous, redundant, and diverse interactions to successfully construct and maintain individual and mutual awareness, which is paramount to achieve system stability and safety. Such continuous interactions enable the operators to prevent, detect, and reverse system errors or flaws by anticipation or regulation. This study helps in providing cues for the design of more workable systems for human cooperation in nuclear power plant operation. © 2007 Wiley Periodicals, Inc. Hum Factors Man 17: 43,78, 2007. [source]

Quality of care, health system errors, and nurses

JOURNAL OF ADVANCED NURSING, Issue 3 2006
Beverly Henry
No abstract is available for this article. [source]

Re-use of equipment between patients receiving total intravenous anaesthesia: a postal survey of current practice,

ANAESTHESIA, Issue 6 2003
M. J. Halkes
Summary In order to establish current practice with regard to the reuse of infusion equipment between patients receiving total intravenous anaesthesia (TIVA), a postal survey of 393 consultants was carried out. Additionally, consultants' awareness of relevant guidelines was assessed. Overall, 46% of consultants change all equipment between cases, 37% change one-way valves and 17% change distal lengths of the infusion tubing. Only 13% of consultants reported knowledge of any guidelines. In the absence of any data relevant to the current techniques of administering TIVA, the level of risk associated with the reuse of infusion components is impossible to quantify. Disposal of all equipment between cases incurs a 26% greater cost when compared to changing one-way valves alone. Variation in practice between consultants creates the potential for system errors. Practice should be standardised and, to comply with the published guidelines, should involve disposal of all equipment between cases. [source]