Iterative improvement of eigensolutions from reduced matrices

1989 ◽  
Vol 5 (5) ◽  
pp. 329-335 ◽  
Author(s):  
G. Sauer
Author(s):  
Meike M. Neuwirth ◽  
Swetlana Herbrandt ◽  
Frauke Mattner ◽  
Robin Otchwemah

Abstract Background: The “HygArzt” project investigated the effectiveness of hygiene measures introduced by an infection prevention link physician (PLP). Objective: To investigate whether the introduction of a standardized aseptic dressing change concept (ADCC) by a PLP can increase hand hygiene adherence and adherence to specific process steps during an aseptic dressing change (ADC) in a trauma surgery and orthopedic department. Methods: We defined 4 required hand disinfection indications: (1) before the preparation of ADC equipment, (2) immediately before the ADC, (3) before the clean phase, and (4) after the ADC. A process analysis of the preintervention phase (331 ADCs) was used to develop a standardized ADCC. The ADCC was introduced and iteratively adopted during the intervention phase. The effect was evaluated during the postintervention phase (374 ADCs). Results: Hand hygiene adherence was significantly increased by the introduction of the ADCC for all indications: (1) before the preparation of the ADC equipment (from 34% before to 85% after, P <.001), (2) immediately before an ADC (from 32% before to 85% after; P < .001), (3) before the clean phase (from 42% before to 96% after; P < .001), and (4) after an ADC (from 74% before to 99% after; P < .001). Overall hand hygiene adherence was analyzed before the indications for an ADC (from 9.6% before to 74% after; P < .001). The same strategy was applied to the following process parameters: use of a clean work surface, clean withdrawal of equipment from the dressing trolley, and appropriate waste disposal. Conclusions: A PLP sufficiently implemented a standardized concept for aseptic dressing change during an iterative improvement process, which resulted in a significant improvement in hand hygiene and adherence to other specific ADCC process steps.


1997 ◽  
Vol 25 (6) ◽  
pp. 1767-1782 ◽  
Author(s):  
Victor Camillo
Keyword(s):  

2000 ◽  
Vol 49 (9) ◽  
pp. 1769
Author(s):  
YUAN NAI-RONG ◽  
WU HONG-YAN ◽  
LI ZHENG ◽  
Q.C.QIU

VLSI Design ◽  
2002 ◽  
Vol 15 (2) ◽  
pp. 485-489
Author(s):  
Youssef Saab

Partitioning is a fundamental problem in the design of VLSI circuits. In recent years, ratio-cut partitioning has received attention due to its tendency to partition circuits into their natural clusters. Node contraction has also been shown to enhance the performance of iterative partitioning algorithms. This paper describes a new simple ratio-cut partitioning algorithm using node contraction. This new algorithm combines iterative improvement with progressive cluster formation. Under suitably mild assumptions, the new algorithm runs in linear time. It is also shown that the new algorithm compares favorably with previous approaches.


Author(s):  
Elizabeth Ann Beckmann ◽  
Sango Mahanty

<p>This paper presents selected findings from a 5-year design-based research case study of the evolution of an online role play that allows postgraduate students to explore the complexities inherent in land rights negotiations between indigenous peoples and others. In the context of Laurillard’s (2002) conversational framework and a design-based research methodology, diverse private and public discussion forum spaces were created for group negotiations on a learning management system (LMS) platform. Our analysis of the conversational framework structure in the evolved role play showed that all four stages – discursive, adaptive, integrative, and reflective – were evidenced, with the adaptive and integrative stages cycling through multiple times. The online role play, whilst implemented as a simple virtual world, facilitated personal, deep and socialised learning experiences focused on consultation, negotiation and decision-making. We also found that student anonymity was not necessary for full engagement in role play, and that students chose to incorporate communication technologies outside the LMS into their learning activities. This research shows that with a strong pedagogical design, and attention paid to an evidence-based iterative improvement cycle, online role plays can provide powerful collaborative learning experiences.</p>


2020 ◽  
Vol 15 ◽  
Author(s):  
Kalpa De Silva ◽  
Aung Myat ◽  
Julian Strange ◽  
Giora Weisz

Percutaneous coronary intervention (PCI) has undergone a rapid and adaptive evolution since its introduction into clinical practice more than 40 years ago. It is the most common mode of coronary revascularisation in use, with the scope, breadth and constellation of disease being treated increasing markedly over time. This has principally been driven by improvements in technology, engineering and training in the field, which has facilitated more complex PCI procedures to be undertaken safely. Robot-assisted PCI represents the next paradigm shift in contemporary PCI practice. It has the ability to enhance procedural accuracy for the patient while improving radiation safety and ergonomics for the operator. This state-of-the-art review outlines the current position and future potential of robot-assisted PCI.


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