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From page 9... ...
3 Sta As describe consisting students a dataset. 3.1 Cla Two types Analysi preced externa Analysi examp classro For the des For noi thresho For noi numbe time pe Multilevel clustering examine th periods pri 30s, depen models est observed g example, a odds for an indicates a observed. such as 2 o of teachers Regression outcomes Learner. Th data relati subject be metrics, a metric, to Analysis w classroom session pe and voice‐ tistical M d in the previ of one‐second nd teachers w ssroom O of analysis we s comparing n ing the onset o l LAeq in the 3 s comparing n le, the NA abo om session. criptives we p se metrics ove ld was crosse se metrics ove r of seconds th riod is describ regression mo of the data by e association or to an event ding on the no imate the incr iven the speci n odds ratio o event being o 2% increase in It is important r 5% across th are actually o modeling allo to be taken int erefore all of ng to free scho ing observed d further additio see if external as also conduc session is bein r hour. For ana raising events ethodo ous chapter, a LAeq values f ere recorded i bservation re carried out oise metrics o f an event suc 0 seconds bef oise metrics ac ve 60 dBA wou resent the fol r 1 second: th d is described. r 5, 10, and 30 at the noise m ed. dels taking int class and scho between these being observe ise metric)
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From page 10... ...
Therefore, between 0 hour. For e be 1/1.5= 0 group. Further an when a cla classroom had to be r voice‐raisin than 1 eve Finally, ana The LAeq 2 case, estim to: The nu The nu The compl 3.2 Tea Each teach sample, LA The survey both healt Perceiv psycho stress, though Cogniti assesse motor Noise a based o Activity quality The compl the teacher vo and less than xample if in a .67 for this pa alysis was perf ssroom sessio session per ho eformatted, a g events were nt per hour. lysis was cond 4 hours repre ated for a one mber of voice‐ mber of voice‐ ete report on t cher Surv er survey was eq 24 hours at instrument co h outcomes an ed Stress Scale logical survey which asks par ts during the p ve Failures Qu s self‐reporte function. nnoyance of n n standard IS interference, of students' w ete report on t ice‐masking e 1 event per ho 1.5 hour class rticular sessio ormed compa n was being ob ur. For analys s the NA noise categorized a ucted making sents the A‐we ‐year period. masking even raising events he statistical a ey matched with the surveyed llected severa d noise attitud , a widely use for measuring ticipants abou ast month. estionnaire, a d failures on p oise from airc O annoyance q including stud ork. he survey ana vents were re ur, between 1 room session o n and hence b ring the numb served, with t es using the NA metrics were s no events pe use of the mo ighted total s The annual ext ts observed in observed in e nalysis is pres the computed schools range l categories of es, including: d 10‐question the perceptio t their feeling 25‐question su erception, me raft, road, and uestions. ents attention lysis is presen calculated per and less than nly 1 masking e placed in the er of aircraft n he number of noise metric calculated for r hour, betwe deled annual ound energy a ernal LAeq 24 each classroo ach classroom ented as Appe external LAeq d from 43.7 to data on n of s and rvey that mory, and students , students con ted as Append Cha hour, being ca 2 events per event happen between 0 a oise events ab teacher voice s, the teacher one‐hour per en 0 and less external LAeq t each school o hours for eac m session. session. ndix E to this 24 hours at t 68.6 dBA. centration, st ix F to this doc The teach Pe Co An Ac pter 3 – Statis tegorized as n hour, and mor ed, then mask nd less than 1 ove set thres ‐raising events outcome of vo iods. Therefor than 1 event p 7 hours for ea ver a 24‐hour h school was e document. hat teacher's udents' perfor ument. er survey fo rceived stre gnitive fatig noyance tivity interfe tical Method o events per e than 2 event ing per hour w event per hou holds per hour observed in a ice‐raising ev e, the teacher er hour, and m ch school loca period. In thi xamined in re school. In the mance, and th cused on: ss ue rence ology 10 hour, s per ould r ents ore tion. s lation e
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