National Academies Press: OpenBook
« Previous: 2 Site Selection and Data Collection Protocols
Page 9
Suggested Citation:"3 Statistical Methodology." National Academies of Sciences, Engineering, and Medicine. 2017. Assessing Aircraft Noise Conditions Affecting Student Learning–Case Studies. Washington, DC: The National Academies Press. doi: 10.17226/24941.
×
Page 9
Page 10
Suggested Citation:"3 Statistical Methodology." National Academies of Sciences, Engineering, and Medicine. 2017. Assessing Aircraft Noise Conditions Affecting Student Learning–Case Studies. Washington, DC: The National Academies Press. doi: 10.17226/24941.
×
Page 10

Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.

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). Th ease in odds f fic noise metri f 1.10 indicate bserved; an o  the odds for   to keep in min ousands of stu f considerable ws other facto o account, suc the regression ol meals, ethn uring the class nal adjustmen noise remaine ted comparing g observed, w lyses using th had to be refo logy cute acoustica rom both insid n classrooms.  with the acute ver short‐time h as teacher v ore a teacher  ross the entir ld be related t lowing:   e percentage o    seconds: the  etric was met o account the  ol were then u  noise metrics d (1s, 5s, 10s, ese regressio or an event be c of interest. S s a 10% increa dds ratio of 1. an event being d that small in dents and hun  magnitude. rs that may in h as ethnicity  models prese icity, and Eng room observa t was made to d associated w  the number o ith the numbe e NA noise me rmatted, as th l noise data w e classrooms a This chapter d  noise data co ‐periods (1 sec oice‐masking, voice‐masking e test session  o the total nu f time that air mean   in that  sed to   in   and  n  ing  o for  se in the  02    creases  dreds  fluence the as , receipt of fre nted in this re lish Language L tion session. F  the regressio ith the outco f aircraft nois r of teacher vo trics, the two  e NA noise me Cha as collected at nd outdoors a escribes the m llected:  ond, 5 second  or teacher vo  event began  to the total nu mber of voice craft noise wa sociation betw e school meals port include th earners, and  or models exa n analyses adj me after takin e events abov ice‐masking e key teacher ou trics were cal Researche metrics to d aircraft noi  Tea  Tea  Stud pter 3 – Statis  each of the st nd simultane ethodologies  s, 10 seconds, ice‐raising.  So would be exam mber of event ‐raising events s heard and th een noise exp  and being an e noise metri class level data mining extern usting for the  g internal nois e set threshold vents observe tcomes of voi culated for on rs compared etermine th se on the fo cher voice- cher voice- ent distrac tical Method udy schools  ous observatio used to analyz  30 seconds)   for example, t ined.   s observed. So  observed for  e noise metri osure and the  English Langu c, and school l  relating to th al LAeq noise  internal LAeq  e into account s per hour wh d in a classroo ce‐masking ev e‐hour periods multiple no e impact o llowing: masking raising tion ology 9 ns of  e this  he   for each  c    age  evel  e  noise  .  en a  m  ents  .  ise f

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 

Next: 4 Results »
Assessing Aircraft Noise Conditions Affecting Student Learning–Case Studies Get This Book
×
 Assessing Aircraft Noise Conditions Affecting Student Learning–Case Studies
MyNAP members save 10% online.
Login or Register to save!
Download Free PDF

TRB's Airport Cooperative Research Program (ACRP) Web-Only Document 34: Assessing Aircraft Noise Conditions Affecting Student Learning–Case Studies attempts to determine how the behaviors of students and teachers are affected by aircraft noise exposure. The report identifies metrics that define the level and characteristics of aircraft noise that impact student achievement. It also develops guidance for use by decision makers on how to reduce the impact of aircraft noise on student achievement. The report is accompanied by a brochure on the Effects of Aircraft Noise on Student Learning.

READ FREE ONLINE

  1. ×

    Welcome to OpenBook!

    You're looking at OpenBook, NAP.edu's online reading room since 1999. Based on feedback from you, our users, we've made some improvements that make it easier than ever to read thousands of publications on our website.

    Do you want to take a quick tour of the OpenBook's features?

    No Thanks Take a Tour »
  2. ×

    Show this book's table of contents, where you can jump to any chapter by name.

    « Back Next »
  3. ×

    ...or use these buttons to go back to the previous chapter or skip to the next one.

    « Back Next »
  4. ×

    Jump up to the previous page or down to the next one. Also, you can type in a page number and press Enter to go directly to that page in the book.

    « Back Next »
  5. ×

    To search the entire text of this book, type in your search term here and press Enter.

    « Back Next »
  6. ×

    Share a link to this book page on your preferred social network or via email.

    « Back Next »
  7. ×

    View our suggested citation for this chapter.

    « Back Next »
  8. ×

    Ready to take your reading offline? Click here to buy this book in print or download it as a free PDF, if available.

    « Back Next »
Stay Connected!