PREQ

AcronymDefinition
PREQPostgraduate Research Experience Questionnaire
PREQPath Request (mesh networks)
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Payload consists of the NMFs of the HWMP PREQ frame and the size of the payload may vary between 37 to 252 bytes depending on the number of destinations in the PREQ frame.
In the following scenario, consider a source node S generates a PREQ frame to find a route to the destination node D through nodes A, B and C as shown in Fig.
preq: The PREQ original message fields including both mutable and non-mutable fields
The one-hop neighbors of S will be able to decrypt the PREQ using the key KS that was shared by S earlier.
In 1996 the Australian Department of Employment, Education, Training, and Youth Affairs commissioned the Graduate Careers Council of Australia to develop the PREQ to measure the experiences of PhD and research higher degree students and the Australian Council for Educational Research (ACER) to evaluate trial results based on this instrument (see ACER, 1999, for a more detailed description of the rationale, development, and evaluation).
The process used to develop the PREQ incorporated extensive input from diverse sources that included reviews of current literature; current institutional evaluation research; good practice and outcomes in relevant areas; existing instruments used in different universities; feedback from higher education staff with relevant experience; a special conference to explore the development of the instrument; and focus groups with current research higher degree students (ACER, 1999).
The factor analyses demonstrated that both versions of the PREQ resulted in five evaluation factors (Supervisor, Climate, Clarity, Infrastructure, and Skill Development), whereas the agree version resulted in a sixth factor about the thesis examination process (Thesis).
In summary, the development of the PREQ instrument supported its content (and face) validity, whereas results based on two large data collections from PhD students from most Australian universities supported its psychometric characteristics (reliability and factor structure) based on responses by individual students.
2(b) is established using the following steps of the proactive PREQ mode in HWMP.
Step 1: A root station periodically broadcasts a proactive PREQ with an incremental sequence number.
If no path to the root mesh station exists, a station that received a proactive PREQ creates a new one.
For the case in which the proactive path reply flag in the PREQ is set, the station shall send a proactive PREP.