Complete conflict detection (MTCD)
MTCD parameters for tuning MTCD operational behaviour, to be set and maintained by the MTCD supervisor. Configuration parameters are : prediction horizons; phases-of-flight  to be excluded; classes-of-flight to be excluded; uncertainty areas; maximum time allowed between detection and first infringement; maximum time between two complete conflict detections of the same flight.
Component
A physical mapping of a module or collection of modules.
A recognisable part of a system which may be a sub-system or an element. Composite Score A score that combines several scores by a specified formula (CDSEPT, 1996). Computer A device which performs sequences of arithmetical and logical steps upon data without human intervention. Computer Based ATM Questions Bank The system will provide a set of exams on various subjects and for different populations. The access will be secured through intra or internet. To be trained or tested the student will use the data directly. The correction will be automatic and the feedback immediate. The system will also be used by examines to create their own exams. Computer Based Examination See Computer Based Classroom Presentation. Computer Based Instruction A process by which theoretical knowledge is exercised through practical application. Computer Based Page Turning Use of an electronic book with no interaction between the learner and the computer apart from "page turning" and more generally navigating from an item to a new one. Computer Based Training Provision of knowledge and skills by means of a computer with numerous interactions, student response analysis and free individual rhythm of learning (self-paced manner). This encompasses interactive guided learning and interactive exploration. Computer Based Classroom Presentation Use of computer by an instructor to provide audio-visual aids in the classroom. There is no direct interaction between the student and the computer. Computer Based Training Learner Station Personal computer or work station dedicated to one student to practice CBT. Today’s equipment is with colour screens and mouse. Sound cards and CD-ROM readers are recommended. Networking facilitates teach ware administration and updating. Conceptual Object The entity of air traffic control information, ready to be further processed and/or presented to the air traffic controller in a suitable form [Definition from COPS-CWP]. Concurrent Validity A demonstrated relationship between job performance and scores on selection instruments obtained at approximately the same time (SIOP, 1987).

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Conditional Route
An ATS route or a portion thereof which can be planned and used under certain specified conditions. CDRs can be divided into different categories according to their foreseen availability, flight planning possibilities and the expected level of activity of the possible associated TSAs. A CDR can be established in one or more of the three following categories : a) Category One - Permanently Plannable CDR; b) Category Two - Non Permanently Plannable CDR, and c) Category Three - Not Plannable CDR.