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Julie Mueller, Eileen Wood, and Teena Willoughby was felt to be a distinct disadvantage for integrating computers in the classroom Supporting computer technology in the ECE environment may be a particular challenge because these programs are not government funded, networked, or organized through a central administration unit Hence each center is isolated, increasing the pressures on individual early childhood educators Consistent with previous research (eg, Specht et al, 2002), these educators perceived that lack of training and comfort with technology, coupled with limited technological support resources, may have important implications for the selection of appropriate hardware and software for the children they supervise Specifically, there was limited support (either external or internal to the center) to assist in the selection of appropriate software, or to facilitate the selection, maintenance, and trouble-shooting of computers; nor were there resources for consultation regarding the integration of technology in their classrooms.

However operator maintenance practices affecting system reliability and operating practices also have a signi cant effect Operators with larger eets of the same aircraft-engine model have an advantage as they can more quickly generate the in-service engine hours necessary to secure more stringent ETOPS approvals For example a large airline operator with a eet of 50 aircraft ying 4000 hours per year would establish an annual useage of 400 000 engine hours; 4 IFSDs or less in a 12 month operating period.

The absence of external resources necessitates that ECE educators themselves select, acquire, and implement technology ECE educators must be familiar with the technology to the extent that they can facilitate its implementation with their young students, as well as manage basic issues related to selection and use of appropriate hardware and software (eg, Clements, 1995; Samaras, 1996) In summary, early childhood educators have the motivation, the interest, and the desire to introduce and use computer technology in their centers They perceive support for the integration of computers from the parents of the children they supervise The caveats, however, are that the computer technology must be age-appropriate to the learner, reflect the skills promoted through ECE environments, allow for ease of use without compromising safety and supervision of children, and be accompanied by sufficient training and support for the educator.

Relational Database Index Design and the Optimizers, by Tapio Lahdenm ki and Michael Leach a Copyright 2005 John Wiley & Sons, Inc.

There is limited research that examines the impact of integrating computer technology from the perspective of early childhood educators (Specht et al, 2002; Tsitouridou & Vryzas, 2003; Wood et al, 2002) Because these educators may serve a pivotal role in introducing children to computer technology, it is critical that we understand their perspective, concerns, and needs Further, it is important that researchers in the area of early childhood education continue to investigate the integration of computers in order to provide answers to the concerns and provide explicit examples of the opportunities that computer integration can offer for very young learners In summary, educators at all levels experience challenges and supports in the integration of computer technology in their classrooms.

would demonstrate an IFSD of < 0.01 per 1000 engine hours. A smaller airline with 10 aircraft ying similar rates would only accumulate 80 000 engine hours and a single IFSD in a 12 month operating period would reduce the IFSD to 0.0125 per 1000 engine hours. Furthermore this rate would persist for a year until the offending incident dropped out of the moving average data set. More recently, following considerable discussion, the FAA has issued regulations permitting 240 minutes ETOPS for speci c geographical areas such as polar routes, with the notable exception of certain South polar regions. These ights in the most severe operating conditions place demands not only upon the aircraft-engine combination but upon other systems such as fuel; ECS and pressurisation, cargo re hold suppression, oxygen and others. Another requirement is for aircraft to be tted with SATCOM when operating for more than 180 minutes to ensure that the ight crew can remain in contact with air traf c control throughout the ETOPS segment. A very recent FAA publication on the nal rule following extensive ETOPS review may be found at reference [9].

The onus is on researchers, educators, and schools to find ways to make technology available, accessible, and effective so that students have the best opportunity for learning in this digital world 292.

[1] ARP4761 Guidelines and Methods for Conducting the Safety Assessment Process on Civil Airborne Systems. [2] ARP4754 Certi cation Considerations for Highly-Integrated or Complex Aircraft Systems, 1996. [3] AC 25.1309-1A System Design and Analysis, Advisory Circular, 1998. [4] AMJ 25.1309 System Design and Analysis, Advisory Material Joint, 1994. [5] ATA-100 ATA Speci cation for Manufacturer s Technical Data. [6] DO-178B Software Considerations in Airborne systems and Equipment Certi cation. [7] DO-254Design Assurance Guidance for Airborne Electronic Hardware. [8] Dual use of Variable Speed Constant Frequency (VSCF) cyclo-converter technology, V Bonneau, FITEC 98. [9] Federal Register Vol. 72, No. 9, Tuesday, 16 January 2007, Rules and Regulations- RIN2120 A103, Extended Operations (ETOPS) of Multi-Engine Airplanes.

Integration of Computer Technology Acknowledgments Support for this research was provided by a grant to Eileen Wood and Teena Willoughby from the Canadian Language and Literacy Research Network. References

The rst major impetus for use of electronics in aviation occurred during World War II. Communications were maturing and the development of airborne radar using the magnetron and associated technology occurred at a furious pace throughout the con ict [1]. Transistors followed in the late 1950s and 1960s and supplanted thermionic valves for many applications. The improved cost-effectiveness of transistors led to the development of digital aircraft systems throughout the 1960s and 1970s, initially in the military combat aircraft where it was used for Nav/Attack systems. See Figure 12.1.