메뉴 건너뛰기




Volumn 81, Issue 5, 2011, Pages 983-991

Vocal similarity and familiarity determine response to potential flockmates in orange-fronted conures (Psittacidae)

Author keywords

Aratinga canicularis; Decision; Fission fusion society; Orange fronted conure; Parrot; Vocal imitation; Vocal recognition

Indexed keywords

ADAPTIVE RADIATION; BIRD; DECISION MAKING; DISCRIMINANT ANALYSIS; EXPERIMENTAL STUDY; FUNCTIONAL MORPHOLOGY; PHYSIOLOGICAL RESPONSE; RECRUITMENT (POPULATION DYNAMICS); VOCALIZATION;

EID: 79953299666     PISSN: 00033472     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.anbehav.2011.01.034     Document Type: Article
Times cited : (22)

References (64)
  • 1
    • 72449204234 scopus 로고    scopus 로고
    • Differential effects of moving versus stationary territorial intruders on territory defence in a songbird
    • Amrhein V., Lerch S. Differential effects of moving versus stationary territorial intruders on territory defence in a songbird. Journal of Animal Ecology 2010, 79:82-87.
    • (2010) Journal of Animal Ecology , vol.79 , pp. 82-87
    • Amrhein, V.1    Lerch, S.2
  • 2
    • 79953294943 scopus 로고    scopus 로고
    • Orange-fronted conures (Aratinga canicularis) use vocal imitation to address specific individuals. Master thesis, University of Copenhagen.
    • Andersen, J. V. 2009. Orange-fronted conures (Aratinga canicularis) use vocal imitation to address specific individuals. Master thesis, University of Copenhagen.
    • (2009)
    • Andersen, J.V.1
  • 3
    • 33645755862 scopus 로고    scopus 로고
    • The ties that bind: genetic relatedness predicts the fission and fusion of social groups in wild African elephants
    • Archie E.A., Moss C.J., Alberts S.C. The ties that bind: genetic relatedness predicts the fission and fusion of social groups in wild African elephants. Proceedings of the Royal Society B 2006, 273:513-522.
    • (2006) Proceedings of the Royal Society B , vol.273 , pp. 513-522
    • Archie, E.A.1    Moss, C.J.2    Alberts, S.C.3
  • 4
    • 0000547839 scopus 로고    scopus 로고
    • How to vocally identify kin in a crowd: the penguin model
    • Aubin T., Jouventin P. How to vocally identify kin in a crowd: the penguin model. Advances in the Study of Behavior 2002, 31:243-277.
    • (2002) Advances in the Study of Behavior , vol.31 , pp. 243-277
    • Aubin, T.1    Jouventin, P.2
  • 5
    • 45849100844 scopus 로고    scopus 로고
    • Aggression and conflict management at fusion in spider monkeys
    • Aureli F., Schaffner C.M. Aggression and conflict management at fusion in spider monkeys. Biology Letters 2007, 3:147-149.
    • (2007) Biology Letters , vol.3 , pp. 147-149
    • Aureli, F.1    Schaffner, C.M.2
  • 7
    • 0026447408 scopus 로고
    • Vocal recognition in Mexican free-tailed bats: do pups recognize mothers?
    • Balcombe J.P., McCracken G.F. Vocal recognition in Mexican free-tailed bats: do pups recognize mothers?. Animal Behaviour 1992, 43:79-87.
    • (1992) Animal Behaviour , vol.43 , pp. 79-87
    • Balcombe, J.P.1    McCracken, G.F.2
  • 8
    • 68749085798 scopus 로고    scopus 로고
    • Vocal imitation by orange-fronted conures (Aratinga canicularis)
    • Balsby T.J.S., Bradbury J.W. Vocal imitation by orange-fronted conures (Aratinga canicularis). Behavioural Processes 2009, 82:133-139.
    • (2009) Behavioural Processes , vol.82 , pp. 133-139
    • Balsby, T.J.S.1    Bradbury, J.W.2
  • 9
    • 48749096179 scopus 로고    scopus 로고
    • Sex-specific responses to vocal convergence and divergence of contact calls in orange-fronted conures (Aratinga canicularis)
    • Balsby T.J.S., Scarl J.C. Sex-specific responses to vocal convergence and divergence of contact calls in orange-fronted conures (Aratinga canicularis). Proceedings of the Royal Society B 2008, 275:2147-2154.
    • (2008) Proceedings of the Royal Society B , vol.275 , pp. 2147-2154
    • Balsby, T.J.S.1    Scarl, J.C.2
  • 10
    • 0033150459 scopus 로고    scopus 로고
    • The effect of new recruits on the flock specific call of budgerigars (Melopsittacus undulatus)
    • Bartlett P., Slater P.J.B. The effect of new recruits on the flock specific call of budgerigars (Melopsittacus undulatus). Ethology Ecology & Evolution 1999, 11:139-147.
    • (1999) Ethology Ecology & Evolution , vol.11 , pp. 139-147
    • Bartlett, P.1    Slater, P.J.B.2
  • 11
    • 0032104462 scopus 로고    scopus 로고
    • Greater spear-nosed bats discriminate group mates by vocalizations
    • Boughman J.W., Wilkinson G.S. Greater spear-nosed bats discriminate group mates by vocalizations. Animal Behaviour 1998, 55:1717-1732.
    • (1998) Animal Behaviour , vol.55 , pp. 1717-1732
    • Boughman, J.W.1    Wilkinson, G.S.2
  • 12
    • 0012635119 scopus 로고    scopus 로고
    • Vocal communication in wild parrots
    • Harvard University Press, Cambridge, Massachusetts, F.B.M. DeWaal, P.L. Tyack (Eds.)
    • Bradbury J.W. Vocal communication in wild parrots. Animal Social Complexity: Intelligence, Culture and Individualized Societies 2003, 293-316. Harvard University Press, Cambridge, Massachusetts. F.B.M. DeWaal, P.L. Tyack (Eds.).
    • (2003) Animal Social Complexity: Intelligence, Culture and Individualized Societies , pp. 293-316
    • Bradbury, J.W.1
  • 13
    • 0035207590 scopus 로고    scopus 로고
    • Geographical variation in the contact calls of orange-fronted parakeets
    • Bradbury J.W., Cortopassi K.A., Clemmons J.R. Geographical variation in the contact calls of orange-fronted parakeets. Auk 2001, 118:958-972.
    • (2001) Auk , vol.118 , pp. 958-972
    • Bradbury, J.W.1    Cortopassi, K.A.2    Clemmons, J.R.3
  • 14
    • 53549092242 scopus 로고    scopus 로고
    • Individual recognition and selective response to contact calls in foraging brown-throated conures, Aratinga pertinax
    • Buhrman-Deever S., Hobson E.A., Hobson A.D. Individual recognition and selective response to contact calls in foraging brown-throated conures, Aratinga pertinax. Animal Behaviour 2008, 76:1715-1725.
    • (2008) Animal Behaviour , vol.76 , pp. 1715-1725
    • Buhrman-Deever, S.1    Hobson, E.A.2    Hobson, A.D.3
  • 16
    • 0025255833 scopus 로고
    • Manipulation foraging group size: spider monkey food calls at fruiting trees
    • Chapman C.A., Lefebvre L. Manipulation foraging group size: spider monkey food calls at fruiting trees. Animal Behaviour 1990, 39:891-896.
    • (1990) Animal Behaviour , vol.39 , pp. 891-896
    • Chapman, C.A.1    Lefebvre, L.2
  • 17
    • 0000135952 scopus 로고
    • Recognition of individuals within and between groups of free-ranging vervet monkeys
    • Cheney D.L., Seyfarth R.M. Recognition of individuals within and between groups of free-ranging vervet monkeys. American Zoologist 1982, 22:519-529.
    • (1982) American Zoologist , vol.22 , pp. 519-529
    • Cheney, D.L.1    Seyfarth, R.M.2
  • 18
    • 0002189390 scopus 로고    scopus 로고
    • The bottlenose dolphin, Tursiops spp.: social relationships in a fission-fusion society
    • University of Chicago Press, Chicago, J. Mann, R.C. Connor, P. Tyack, H. Whitehead (Eds.)
    • Connor R.C., Wells R., Mann J., Read A. The bottlenose dolphin, Tursiops spp.: social relationships in a fission-fusion society. Cetacean Societies: Field Studies of Whales and Dolphins 2000, 91-126. University of Chicago Press, Chicago. J. Mann, R.C. Connor, P. Tyack, H. Whitehead (Eds.).
    • (2000) Cetacean Societies: Field Studies of Whales and Dolphins , pp. 91-126
    • Connor, R.C.1    Wells, R.2    Mann, J.3    Read, A.4
  • 19
    • 0034526794 scopus 로고    scopus 로고
    • The comparison of harmonically rich sounds using spectrographic cross-correlation and principal coordinates analysis
    • Cortopassi K., Bradbury J.W. The comparison of harmonically rich sounds using spectrographic cross-correlation and principal coordinates analysis. Bioacoustics 2000, 11:89-127.
    • (2000) Bioacoustics , vol.11 , pp. 89-127
    • Cortopassi, K.1    Bradbury, J.W.2
  • 20
    • 33646264066 scopus 로고    scopus 로고
    • Contact call diversity in wild orange-fronted parakeet pairs (Aratinga canicularis)
    • Cortopassi K., Bradbury J.W. Contact call diversity in wild orange-fronted parakeet pairs (Aratinga canicularis). Animal Behaviour 2006, 71:1141-1154.
    • (2006) Animal Behaviour , vol.71 , pp. 1141-1154
    • Cortopassi, K.1    Bradbury, J.W.2
  • 23
    • 17044382226 scopus 로고    scopus 로고
    • Cache protection strategies by western scrubjays, Aphelocoma californica: implications for social cognition
    • Dally J.M., Emery N.J., Clayton N.S. Cache protection strategies by western scrubjays, Aphelocoma californica: implications for social cognition. Animal Behaviour 2005, 70:1251-1263.
    • (2005) Animal Behaviour , vol.70 , pp. 1251-1263
    • Dally, J.M.1    Emery, N.J.2    Clayton, N.S.3
  • 24
    • 2042459174 scopus 로고    scopus 로고
    • Offspring sex ratio variation in relation to brood size and mortality in a promiscuous species: the aquatic warbler Acrocephalus paludicola
    • Dyrcz A., Sauer-Gurth H., Tkadlec E., Wink M. Offspring sex ratio variation in relation to brood size and mortality in a promiscuous species: the aquatic warbler Acrocephalus paludicola. Ibis 2004, 146:269-280.
    • (2004) Ibis , vol.146 , pp. 269-280
    • Dyrcz, A.1    Sauer-Gurth, H.2    Tkadlec, E.3    Wink, M.4
  • 25
    • 52949145986 scopus 로고    scopus 로고
    • Long-term influence of simulated territorial intrusions on dawn and dusk singing in the winter wren: spring versus autumn
    • Erne N., Amrhein V. Long-term influence of simulated territorial intrusions on dawn and dusk singing in the winter wren: spring versus autumn. Journal of Ornithology 2008, 149:479-486.
    • (2008) Journal of Ornithology , vol.149 , pp. 479-486
    • Erne, N.1    Amrhein, V.2
  • 26
    • 0001419050 scopus 로고
    • Individual recognition by sound in birds
    • Academic Press, New York, D.E. Kroodsma, E.H. Miller (Eds.)
    • Falls J.B. Individual recognition by sound in birds. Acoustic Communication in Birds. Vol. 2 1982, 237-278. Academic Press, New York. D.E. Kroodsma, E.H. Miller (Eds.).
    • (1982) Acoustic Communication in Birds. Vol. 2 , pp. 237-278
    • Falls, J.B.1
  • 28
    • 0005827069 scopus 로고
    • Call matching and positive assortative matching in red crossbills
    • Groth J.G. Call matching and positive assortative matching in red crossbills. Auk 1993, 110:398-491.
    • (1993) Auk , vol.110 , pp. 398-491
    • Groth, J.G.1
  • 29
    • 32144437049 scopus 로고    scopus 로고
    • Overlapping signals in banded wrens: long-term effects of prior experience on males and females
    • Hall M., Illes A., Vehrencamp S.L. Overlapping signals in banded wrens: long-term effects of prior experience on males and females. Behavioral Ecology 2006, 17:260-269.
    • (2006) Behavioral Ecology , vol.17 , pp. 260-269
    • Hall, M.1    Illes, A.2    Vehrencamp, S.L.3
  • 30
    • 33745438933 scopus 로고    scopus 로고
    • Neighbour - stranger discrimination in the little owl
    • Hardouin L.A., Tabel P., Bretagnolle V. Neighbour - stranger discrimination in the little owl. Animal Behaviour 2006, 72:105-112.
    • (2006) Animal Behaviour , vol.72 , pp. 105-112
    • Hardouin, L.A.1    Tabel, P.2    Bretagnolle, V.3
  • 31
    • 0034489552 scopus 로고    scopus 로고
    • Call convergence within groups of female budgerigars (Melopsittacus undulatus)
    • Hile A.G., Striedter G. Call convergence within groups of female budgerigars (Melopsittacus undulatus). Ethology 2000, 106:1105-1114.
    • (2000) Ethology , vol.106 , pp. 1105-1114
    • Hile, A.G.1    Striedter, G.2
  • 36
    • 0000939633 scopus 로고
    • Individual differences and within flock convergence in chickadee calls
    • Mammen D.L., Nowicki S. Individual differences and within flock convergence in chickadee calls. Behavioral Ecology and Sociobiology 1981, 9:179-186.
    • (1981) Behavioral Ecology and Sociobiology , vol.9 , pp. 179-186
    • Mammen, D.L.1    Nowicki, S.2
  • 37
    • 3242699556 scopus 로고    scopus 로고
    • Bird calls: their potential for behavioral neurobiology
    • Marler P. Bird calls: their potential for behavioral neurobiology. Annals of the New York Academy of Sciences 2004, 1016:31-44.
    • (2004) Annals of the New York Academy of Sciences , vol.1016 , pp. 31-44
    • Marler, P.1
  • 38
    • 84966088894 scopus 로고
    • Vocalizations, social organization, and breeding biology of the twite, Acanthus flavirostris
    • Marler P., Mundinger P.C. Vocalizations, social organization, and breeding biology of the twite, Acanthus flavirostris. Ibis 1975, 117:1-17.
    • (1975) Ibis , vol.117 , pp. 1-17
    • Marler, P.1    Mundinger, P.C.2
  • 39
    • 1242277763 scopus 로고    scopus 로고
    • Do male black-capped chickadees eavesdrop on song contests? A multi-speaker playback experiment
    • Mennill D.J., Ratcliffe L.M. Do male black-capped chickadees eavesdrop on song contests? A multi-speaker playback experiment. Behaviour 2004, 141:125-139.
    • (2004) Behaviour , vol.141 , pp. 125-139
    • Mennill, D.J.1    Ratcliffe, L.M.2
  • 40
    • 0037012862 scopus 로고    scopus 로고
    • Female eavesdropping on male song contests in songbirds
    • Mennill D.J., Ratcliffe L.M., Boag P.T. Female eavesdropping on male song contests in songbirds. Science 2002, 296:873.
    • (2002) Science , vol.296 , pp. 873
    • Mennill, D.J.1    Ratcliffe, L.M.2    Boag, P.T.3
  • 41
    • 33749849733 scopus 로고    scopus 로고
    • Assortative pairing based on contact call similarity in budgerigars, Melopsittacus undulatus
    • Moravec M.L., Striedter G.F., Burley N.T. Assortative pairing based on contact call similarity in budgerigars, Melopsittacus undulatus. Ethology 2006, 112:1108-1116.
    • (2006) Ethology , vol.112 , pp. 1108-1116
    • Moravec, M.L.1    Striedter, G.F.2    Burley, N.T.3
  • 42
    • 0000727032 scopus 로고
    • Vocal imitation and individual recognition of finch calls
    • Mundinger P.C. Vocal imitation and individual recognition of finch calls. Science 1971, 168:480-482.
    • (1971) Science , vol.168 , pp. 480-482
    • Mundinger, P.C.1
  • 43
    • 0001599426 scopus 로고
    • Call learning in the Carduelinae: ethological and systematic considerations
    • Mundinger P.C. Call learning in the Carduelinae: ethological and systematic considerations. Systematic Zoology 1979, 28:279-283.
    • (1979) Systematic Zoology , vol.28 , pp. 279-283
    • Mundinger, P.C.1
  • 44
    • 0031470872 scopus 로고    scopus 로고
    • Effects of dyadic vocal interactions on other conspecific receivers in nightingales
    • Naguib M., Todt D. Effects of dyadic vocal interactions on other conspecific receivers in nightingales. Animal Behaviour 1997, 54:1535-1543.
    • (1997) Animal Behaviour , vol.54 , pp. 1535-1543
    • Naguib, M.1    Todt, D.2
  • 45
    • 0033594187 scopus 로고    scopus 로고
    • Nightingales respond more strongly to vocal leaders of simulated dyadic interactions
    • Naguib M., Fichtel C., Todt D. Nightingales respond more strongly to vocal leaders of simulated dyadic interactions. Proceedings of the Royal Society B 1999, 266:537-542.
    • (1999) Proceedings of the Royal Society B , vol.266 , pp. 537-542
    • Naguib, M.1    Fichtel, C.2    Todt, D.3
  • 46
    • 8144231087 scopus 로고    scopus 로고
    • A farewell to Bonferroni: the problems of low statistical power and publication bias
    • Nakagawa S. A farewell to Bonferroni: the problems of low statistical power and publication bias. Behavioral Ecology 2004, 15:1044-1045.
    • (2004) Behavioral Ecology , vol.15 , pp. 1044-1045
    • Nakagawa, S.1
  • 47
    • 0001053359 scopus 로고
    • Chimpanzees and bonobos: cooperative relationships among males
    • University of Chicago Press, Chicago, B.B. Smuts, D.L. Cheney, R.M. Seyfarth, R.W. Wrangham, T.T. Struhsaker (Eds.)
    • Nishida T., Hiraiwa-Hasegawa M. Chimpanzees and bonobos: cooperative relationships among males. Primate Societies 1987, 165-177. University of Chicago Press, Chicago. B.B. Smuts, D.L. Cheney, R.M. Seyfarth, R.W. Wrangham, T.T. Struhsaker (Eds.).
    • (1987) Primate Societies , pp. 165-177
    • Nishida, T.1    Hiraiwa-Hasegawa, M.2
  • 48
    • 45149144746 scopus 로고
    • Vocal plasticity in captive black-capped chickadees: the acoustic basis and rate of call convergence
    • Nowicki S. Vocal plasticity in captive black-capped chickadees: the acoustic basis and rate of call convergence. Animal Behaviour 1989, 37:64-73.
    • (1989) Animal Behaviour , vol.37 , pp. 64-73
    • Nowicki, S.1
  • 50
    • 84927028591 scopus 로고    scopus 로고
    • Eavesdropping in communication networks
    • Cambridge University Press, Cambridge, P.K. McGregor (Ed.)
    • Peake T.M. Eavesdropping in communication networks. Animal Communication Networks 2005, 13-37. Cambridge University Press, Cambridge. P.K. McGregor (Ed.).
    • (2005) Animal Communication Networks , pp. 13-37
    • Peake, T.M.1
  • 52
    • 0037159050 scopus 로고    scopus 로고
    • Do great tits assess rivals by combining direct experience with information gathered by eavesdropping?
    • Peake T.M., Terry A.M.R., McGregor P.K., Dabelsteen T. Do great tits assess rivals by combining direct experience with information gathered by eavesdropping?. Proceedings of the Royal Society B 2002, 269:1925-1929.
    • (2002) Proceedings of the Royal Society B , vol.269 , pp. 1925-1929
    • Peake, T.M.1    Terry, A.M.R.2    McGregor, P.K.3    Dabelsteen, T.4
  • 53
    • 0033082316 scopus 로고    scopus 로고
    • Recognition of family-specific calls in stripe-backed wrens
    • Price J.M. Recognition of family-specific calls in stripe-backed wrens. Animal Behaviour 1999, 57:483-492.
    • (1999) Animal Behaviour , vol.57 , pp. 483-492
    • Price, J.M.1
  • 54
    • 26444574114 scopus 로고    scopus 로고
    • Vocal communication in a fission-fusion society: do spider monkeys stay in touch with close associates?
    • Ramos-Fernandez G. Vocal communication in a fission-fusion society: do spider monkeys stay in touch with close associates?. International Journal of Primatology 2005, 26:1077-1092.
    • (2005) International Journal of Primatology , vol.26 , pp. 1077-1092
    • Ramos-Fernandez, G.1
  • 55
    • 0030131625 scopus 로고    scopus 로고
    • Vocal recognition of individuals and kin in free-ranging rhesus monkeys
    • Rendal D., Rodman P.S., Emond R.E. Vocal recognition of individuals and kin in free-ranging rhesus monkeys. Animal Behaviour 1996, 51:1007-1015.
    • (1996) Animal Behaviour , vol.51 , pp. 1007-1015
    • Rendal, D.1    Rodman, P.S.2    Emond, R.E.3
  • 56
    • 33845897907 scopus 로고    scopus 로고
    • The day after: effects of vocal interactions on territory defense in nightingales
    • Schmidt R., Amrhein V., Kunc H.P., Naguib M. The day after: effects of vocal interactions on territory defense in nightingales. Journal of Animal Ecology 2007, 76:168-173.
    • (2007) Journal of Animal Ecology , vol.76 , pp. 168-173
    • Schmidt, R.1    Amrhein, V.2    Kunc, H.P.3    Naguib, M.4
  • 58
    • 49149089087 scopus 로고    scopus 로고
    • Social and ecological determinants of fission-fusion dynamics in the spotted hyaena
    • Smith J.E., Kolowski J.M., Graham K.E., Dawes S.E., Holekamp K.E. Social and ecological determinants of fission-fusion dynamics in the spotted hyaena. Animal Behaviour 2008, 76:619-636.
    • (2008) Animal Behaviour , vol.76 , pp. 619-636
    • Smith, J.E.1    Kolowski, J.M.2    Graham, K.E.3    Dawes, S.E.4    Holekamp, K.E.5
  • 59
    • 0002231539 scopus 로고    scopus 로고
    • Vocal recognition of neighbours by territorial passerines
    • Cornell University Press, New York, D.E. Kroodsma, E.H. Miller (Eds.)
    • Stoddard P.K. Vocal recognition of neighbours by territorial passerines. Ecology and Evolution of Acoustic Communication in Birds 1996, 356-374. Cornell University Press, New York. D.E. Kroodsma, E.H. Miller (Eds.).
    • (1996) Ecology and Evolution of Acoustic Communication in Birds , pp. 356-374
    • Stoddard, P.K.1
  • 60
    • 0033008153 scopus 로고    scopus 로고
    • The socioecology of fission-fusion sociality in orangutans
    • Van Schaik C.P. The socioecology of fission-fusion sociality in orangutans. Primates 1999, 40:69-86.
    • (1999) Primates , vol.40 , pp. 69-86
    • Van Schaik, C.P.1
  • 61
    • 0037243611 scopus 로고    scopus 로고
    • Responses to playback of local versus distant contact calls in the orange-fronted conure, Aratinga canicularis
    • Vehrencamp S.L., Ritter A.F., Keever M., Bradbury J.W. Responses to playback of local versus distant contact calls in the orange-fronted conure, Aratinga canicularis. Ethology 2003, 109:37-54.
    • (2003) Ethology , vol.109 , pp. 37-54
    • Vehrencamp, S.L.1    Ritter, A.F.2    Keever, M.3    Bradbury, J.W.4
  • 62
    • 0001477659 scopus 로고
    • Selective responsiveness by the gannet (Sula bassana) to played-back calls
    • White S.J. Selective responsiveness by the gannet (Sula bassana) to played-back calls. Animal Behaviour 1971, 19:125-131.
    • (1971) Animal Behaviour , vol.19 , pp. 125-131
    • White, S.J.1
  • 63
    • 7944236382 scopus 로고    scopus 로고
    • Roost switching, roost sharing and social cohesion: forest-dwelling big brown bats, Eptesicus fuscus, conform to the fission-fusion model
    • Willis C.K.R., Brigham R.M. Roost switching, roost sharing and social cohesion: forest-dwelling big brown bats, Eptesicus fuscus, conform to the fission-fusion model. Animal Behaviour 2004, 68:495-505.
    • (2004) Animal Behaviour , vol.68 , pp. 495-505
    • Willis, C.K.R.1    Brigham, R.M.2
  • 64
    • 0029812074 scopus 로고    scopus 로고
    • Regional dialects in the contact call of a parrot
    • Wright T.F. Regional dialects in the contact call of a parrot. Proceedings of the Royal Society B 1996, 263:867-872.
    • (1996) Proceedings of the Royal Society B , vol.263 , pp. 867-872
    • Wright, T.F.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.