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Volumn 107, Issue 3-4, 2007, Pages 183-197

Why do pigs root and in what will they root?. A review on the exploratory behaviour of pigs in relation to environmental enrichment

Author keywords

Environmental enrichment; Exploration; Motivation; Pig; Rooting

Indexed keywords

ANIMAL WELFARE; BEHAVIOR; PIG;

EID: 34948880240     PISSN: 01681591     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.applanim.2006.11.013     Document Type: Review
Times cited : (281)

References (67)
  • 1
    • 0342335587 scopus 로고
    • Effect of straw on the behaviour and performance of growing pigs in straw-flow pens
    • Arey D.S. Effect of straw on the behaviour and performance of growing pigs in straw-flow pens. Farm Building Prog. 112 (1993) 24-25
    • (1993) Farm Building Prog. , vol.112 , pp. 24-25
    • Arey, D.S.1
  • 2
    • 33744495190 scopus 로고
    • Effects of straw and unfamiliarity on fighting between newly mixed growing pigs
    • Arey D.S., and Franklin M.F. Effects of straw and unfamiliarity on fighting between newly mixed growing pigs. Appl. Anim. Behav. Sci. 45 (1995) 23-30
    • (1995) Appl. Anim. Behav. Sci. , vol.45 , pp. 23-30
    • Arey, D.S.1    Franklin, M.F.2
  • 3
    • 34948814529 scopus 로고
    • Food substrates as environmental enrichment for pigs
    • Arey D.S., and Maw S.J. Food substrates as environmental enrichment for pigs. Farm building Prog. 118 (1995) 9-12
    • (1995) Farm building Prog. , vol.118 , pp. 9-12
    • Arey, D.S.1    Maw, S.J.2
  • 4
    • 0036322906 scopus 로고    scopus 로고
    • Relationship between rooting behaviour and foraging in growing pigs
    • Beattie V.E., and O'Connell N.E. Relationship between rooting behaviour and foraging in growing pigs. Anim. Welf. 11 (2002) 295-303
    • (2002) Anim. Welf. , vol.11 , pp. 295-303
    • Beattie, V.E.1    O'Connell, N.E.2
  • 5
    • 0030199176 scopus 로고    scopus 로고
    • An investigation of the effect of environmental enrichment and space allowance on the behaviour and production of growing pigs
    • Beattie V.E., Walker N., and Sneddon I.A. An investigation of the effect of environmental enrichment and space allowance on the behaviour and production of growing pigs. Appl. Anim. Behav. Sci. 48 (1996) 151-158
    • (1996) Appl. Anim. Behav. Sci. , vol.48 , pp. 151-158
    • Beattie, V.E.1    Walker, N.2    Sneddon, I.A.3
  • 6
    • 0002732817 scopus 로고    scopus 로고
    • Preference testing of substrates by growing pigs
    • Beattie V.E., Walker N., and Sneddon I.A. Preference testing of substrates by growing pigs. Anim. Welf. 7 (1998) 27-34
    • (1998) Anim. Welf. , vol.7 , pp. 27-34
    • Beattie, V.E.1    Walker, N.2    Sneddon, I.A.3
  • 7
    • 0035255841 scopus 로고    scopus 로고
    • Environmental enrichment of intensive pig housing using spent mushroom compost
    • Beattie V.E., Sneddon I.A., Walker N., and Weatheroup R.N. Environmental enrichment of intensive pig housing using spent mushroom compost. Anim. Sci. 72 (2001) 35-42
    • (2001) Anim. Sci. , vol.72 , pp. 35-42
    • Beattie, V.E.1    Sneddon, I.A.2    Walker, N.3    Weatheroup, R.N.4
  • 9
    • 0030954335 scopus 로고    scopus 로고
    • The effect of fixed or free toy on the growth rate and aggressive behaviour of weaned pigs and the influence of hierarchy on initial investigation of the toys
    • Blackshaw J., Thomas F.J., and Lee J. The effect of fixed or free toy on the growth rate and aggressive behaviour of weaned pigs and the influence of hierarchy on initial investigation of the toys. Appl. Anim. Behav. Sci. 53 (1997) 203-212
    • (1997) Appl. Anim. Behav. Sci. , vol.53 , pp. 203-212
    • Blackshaw, J.1    Thomas, F.J.2    Lee, J.3
  • 13
  • 14
    • 0000737748 scopus 로고
    • The effect of food deprivation on the expression of foraging and exploratory behaviour in the growing pig
    • Day J.E.L., Kyriazakis I., and Lawrence A.B. The effect of food deprivation on the expression of foraging and exploratory behaviour in the growing pig. Appl. Anim. Behav. Sci. 42 (1995) 193-206
    • (1995) Appl. Anim. Behav. Sci. , vol.42 , pp. 193-206
    • Day, J.E.L.1    Kyriazakis, I.2    Lawrence, A.B.3
  • 15
    • 0028426978 scopus 로고
    • Non-nutritive chewing by pigs: implications for tailbiting and behavioural enrichment
    • Feddes J.J.R., and Fraser D. Non-nutritive chewing by pigs: implications for tailbiting and behavioural enrichment. Transact. Am. Soc. Agric. Eng. 37 (1994) 947-950
    • (1994) Transact. Am. Soc. Agric. Eng. , vol.37 , pp. 947-950
    • Feddes, J.J.R.1    Fraser, D.2
  • 16
    • 0026267655 scopus 로고
    • Some problems with current patch-choice theory: a study on the mongolian gerbil
    • Forkman B. Some problems with current patch-choice theory: a study on the mongolian gerbil. Behaviour 117 (1991) 241-254
    • (1991) Behaviour , vol.117 , pp. 241-254
    • Forkman, B.1
  • 18
    • 84973949993 scopus 로고
    • Feedforward versus feedbackward: an ethological alternative to the law of effects
    • Gardner R.A., and Gardner B.T. Feedforward versus feedbackward: an ethological alternative to the law of effects. Behav. Brain Sci. 11 (1988) 429-493
    • (1988) Behav. Brain Sci. , vol.11 , pp. 429-493
    • Gardner, R.A.1    Gardner, B.T.2
  • 19
    • 0343441271 scopus 로고
    • Material affected cloth-toy and biting by pigs
    • Grandin T., and Curtis S.E. Material affected cloth-toy and biting by pigs. J. Anim. Sci. 59 Suppl. 1 (1984) 150
    • (1984) J. Anim. Sci. , vol.59 , Issue.SUPPL. 1 , pp. 150
    • Grandin, T.1    Curtis, S.E.2
  • 20
    • 0343441273 scopus 로고
    • Toy preference in young pigs
    • Grandin T., and Curtis S.E. Toy preference in young pigs. J. Anim. Sci. 59 Suppl. 1 (1984) 85
    • (1984) J. Anim. Sci. , vol.59 , Issue.SUPPL. 1 , pp. 85
    • Grandin, T.1    Curtis, S.E.2
  • 21
    • 0242340832 scopus 로고    scopus 로고
    • Effects of rearing environment on the behaviour of young pigs
    • Grandin T., Curtis S.E., and Greenough W.T. Effects of rearing environment on the behaviour of young pigs. J. Anim. Sci. Suppl. 1 (2003) 137
    • (2003) J. Anim. Sci. , Issue.SUPPL. 1 , pp. 137
    • Grandin, T.1    Curtis, S.E.2    Greenough, W.T.3
  • 23
    • 0037160292 scopus 로고    scopus 로고
    • Behaviour of two genotypes of growing - finishing pig in three different housing systems
    • Guy J.H., Rowlinson P., Chadwick J.P., and Ellis M. Behaviour of two genotypes of growing - finishing pig in three different housing systems. Appl. Anim. Behav. Sci. 75 (2002) 193-206
    • (2002) Appl. Anim. Behav. Sci. , vol.75 , pp. 193-206
    • Guy, J.H.1    Rowlinson, P.2    Chadwick, J.P.3    Ellis, M.4
  • 24
    • 34948843992 scopus 로고    scopus 로고
    • Guy, J.H., Whitehead, N., Cussins, R.A. 2002b. The Pig mobile: a simple environmental enrichment device for growing pigs in barren pigs. Proc. 36th Int. Congr. of the ISAE, Egmond aan Zee, The Netherlands, 142.
  • 25
    • 0030198748 scopus 로고    scopus 로고
    • The relationship between food consumption and persistence of post-feeding foraging behaviour in sows
    • Haskell M.J., Terlouw E.M.C., Lawrence A.B., and Erhard H.W. The relationship between food consumption and persistence of post-feeding foraging behaviour in sows. Appl. Anim. Behav. Sci. 48 (1996) 249-262
    • (1996) Appl. Anim. Behav. Sci. , vol.48 , pp. 249-262
    • Haskell, M.J.1    Terlouw, E.M.C.2    Lawrence, A.B.3    Erhard, H.W.4
  • 26
    • 0030439123 scopus 로고    scopus 로고
    • The effect of substrat-enriched and substrate-impoverished housing environments on the diversity of behaviour in pigs
    • Haskell M.J., Wemelsfelder F., Mendl M.T., Calvert S., and Lawrence A.B. The effect of substrat-enriched and substrate-impoverished housing environments on the diversity of behaviour in pigs. Behaviour 133 (1996) 741-761
    • (1996) Behaviour , vol.133 , pp. 741-761
    • Haskell, M.J.1    Wemelsfelder, F.2    Mendl, M.T.3    Calvert, S.4    Lawrence, A.B.5
  • 27
    • 0031898675 scopus 로고    scopus 로고
    • Environmental enrichment influences on pig behavior, performance and meat quality
    • Hill J.D., McGlone J.J., Fullwood S.D., and Miller M.F. Environmental enrichment influences on pig behavior, performance and meat quality. Appl. Anim. Behav. Sci. 57 (1998) 51-68
    • (1998) Appl. Anim. Behav. Sci. , vol.57 , pp. 51-68
    • Hill, J.D.1    McGlone, J.J.2    Fullwood, S.D.3    Miller, M.F.4
  • 28
    • 0001969214 scopus 로고
    • Enrichment satisfying specific behavioural needs in early-weaned pigs
    • Horrell I., and A'Ness P. Enrichment satisfying specific behavioural needs in early-weaned pigs. Appl. Anim. Behav. Sci. 44 (1995) 264
    • (1995) Appl. Anim. Behav. Sci. , vol.44 , pp. 264
    • Horrell, I.1    A'Ness, P.2
  • 30
    • 0031172244 scopus 로고    scopus 로고
    • Free food or earned food? E review and fuzzy model of contrafreeloading
    • Inglis I.R., Forkman B., and Lazarus J. Free food or earned food? E review and fuzzy model of contrafreeloading. Anim. Behav. 53 (1997) 1171-1191
    • (1997) Anim. Behav. , vol.53 , pp. 1171-1191
    • Inglis, I.R.1    Forkman, B.2    Lazarus, J.3
  • 31
    • 0034814055 scopus 로고    scopus 로고
    • An information primacy model of exploratory and foraging behaviour
    • Inglis I.R., Langton S., Forkman B., and Lazarus J. An information primacy model of exploratory and foraging behaviour. Anim. Behav. 62 (2001) 543-557
    • (2001) Anim. Behav. , vol.62 , pp. 543-557
    • Inglis, I.R.1    Langton, S.2    Forkman, B.3    Lazarus, J.4
  • 32
    • 38249003359 scopus 로고
    • The activity and straw directed behaviour of pigs offered foods with different crude protein content
    • Jensen M.B., Kyriazakis I., and Lawrence A.B. The activity and straw directed behaviour of pigs offered foods with different crude protein content. Appl. Anim. Behav. Sci. 37 (1993) 211-221
    • (1993) Appl. Anim. Behav. Sci. , vol.37 , pp. 211-221
    • Jensen, M.B.1    Kyriazakis, I.2    Lawrence, A.B.3
  • 33
    • 34948851264 scopus 로고    scopus 로고
    • Jensen, M.B., Pedersen, L.J., in press. The value assigned to six different rooting materials by growing pigs. Appl. Anim. Behav. Sci.
  • 35
    • 0027878391 scopus 로고
    • Who needs "behavioural needs"? Motivational aspects of the needs of animals
    • Jensen P., and Toates F. Who needs "behavioural needs"? Motivational aspects of the needs of animals. Appl. Anim. Behav. Sci. 37 (1993) 161-181
    • (1993) Appl. Anim. Behav. Sci. , vol.37 , pp. 161-181
    • Jensen, P.1    Toates, F.2
  • 37
    • 34948834122 scopus 로고
    • Test of optimal sampling by foraging great tits
    • Krebs J.R., Kacelnik A., and Taylor P. Test of optimal sampling by foraging great tits. Nature 275 (1978) 539-542
    • (1978) Nature , vol.275 , pp. 539-542
    • Krebs, J.R.1    Kacelnik, A.2    Taylor, P.3
  • 38
    • 10344246790 scopus 로고
    • The influence of automatic roughage dispenser, straw racks and nibbling beams on the behaviour of fattening pigs
    • Krotzl H., Sciarre C., and Troxler J. The influence of automatic roughage dispenser, straw racks and nibbling beams on the behaviour of fattening pigs. KTBL-Schrift 361 (1994) 181-191
    • (1994) KTBL-Schrift , vol.361 , pp. 181-191
    • Krotzl, H.1    Sciarre, C.2    Troxler, J.3
  • 40
    • 34948841404 scopus 로고    scopus 로고
    • Long, J. 2002. Woodchip bedding offers pig benefit. Farmers Weekly, November, 1pp.
  • 41
    • 34948812410 scopus 로고    scopus 로고
    • Madsen, S.M., 2001. Beskæftigelsesmaterialer til slagtesvin - en sammenligning af 6 materialers adfærdsregulerende effect, in: Speciale, Zoologisk Institut, Afd., for Populationsbiologi, Københavns Universitet, pp. 46.
  • 42
    • 0024694114 scopus 로고
    • Behaviour of groups of weaner pigs in there different housing systems
    • McKinnon A.J., Edwards S.A., Stephens D.B., and Walters D.E. Behaviour of groups of weaner pigs in there different housing systems. Br. Vet. J. 145 (1989) 367-372
    • (1989) Br. Vet. J. , vol.145 , pp. 367-372
    • McKinnon, A.J.1    Edwards, S.A.2    Stephens, D.B.3    Walters, D.E.4
  • 43
    • 0001746937 scopus 로고    scopus 로고
    • Feeding behaviour of growing pigs using single or multi-space feeders
    • Nielsen B.L., Lawrence A.B., and Whittemore C.T. Feeding behaviour of growing pigs using single or multi-space feeders. Appl. Anim. Behav. Sci. 47 (1996) 235-246
    • (1996) Appl. Anim. Behav. Sci. , vol.47 , pp. 235-246
    • Nielsen, B.L.1    Lawrence, A.B.2    Whittemore, C.T.3
  • 44
    • 34948843497 scopus 로고    scopus 로고
    • Roughage as additional rooting substrates for pigs
    • Olsen A.N.W., Vestergaard E.M., and Dybkjær L. Roughage as additional rooting substrates for pigs. Anim. Sci. 49 (2000) 85-97
    • (2000) Anim. Sci. , vol.49 , pp. 85-97
    • Olsen, A.N.W.1    Vestergaard, E.M.2    Dybkjær, L.3
  • 45
    • 0034950927 scopus 로고    scopus 로고
    • Behaviour of growing pigs kept in pens with outdoor runs. I. Effects of access to roughage and shelter on oral activities
    • Olsen W.A. Behaviour of growing pigs kept in pens with outdoor runs. I. Effects of access to roughage and shelter on oral activities. Livestock Prod. Sci. 69 (2001) 255-264
    • (2001) Livestock Prod. Sci. , vol.69 , pp. 255-264
    • Olsen, W.A.1
  • 46
    • 0036190859 scopus 로고    scopus 로고
    • Effect of access to roughage and shelter on selected behavioural indicators of welfare in pigs housed in a complex environment
    • Olsen W.A., Simonsen H.B., and Dybkjær L. Effect of access to roughage and shelter on selected behavioural indicators of welfare in pigs housed in a complex environment. Anim. Welf. 11 (2002) 75-87
    • (2002) Anim. Welf. , vol.11 , pp. 75-87
    • Olsen, W.A.1    Simonsen, H.B.2    Dybkjær, L.3
  • 47
    • 0002902906 scopus 로고
    • The effect and space restriction and provision of toys during rearing on the behaviour, productivity and physiology of male pigs
    • Pearce G.P., and Paterson A.M. The effect and space restriction and provision of toys during rearing on the behaviour, productivity and physiology of male pigs. Appl. Anim. Behav. Sci. 36 (1993) 11-28
    • (1993) Appl. Anim. Behav. Sci. , vol.36 , pp. 11-28
    • Pearce, G.P.1    Paterson, A.M.2
  • 48
    • 0001827221 scopus 로고
    • The influence of pleasant and unpleasant handling and the provision of toys on the growth and behaviour of male pigs
    • Pearce G.P., Paterson A.M., and Pearce A.N. The influence of pleasant and unpleasant handling and the provision of toys on the growth and behaviour of male pigs. Appl. Anim. Behav. Sci. 23 (1989) 27-37
    • (1989) Appl. Anim. Behav. Sci. , vol.23 , pp. 27-37
    • Pearce, G.P.1    Paterson, A.M.2    Pearce, A.N.3
  • 49
    • 34948856353 scopus 로고    scopus 로고
    • Pedersen, L.J., Jensen, M.B., Ladewig, J., in press. The strength of pigs' preferences for different rooting materials measured using concurrent schedules of reinforcement. Appl. Anim. Behav. Sci.
  • 50
    • 0000633323 scopus 로고
    • The effect of environmental stimulation on the development of behaviour in pigs
    • Petersen V., Simonsen H.B., and Lawson L.G. The effect of environmental stimulation on the development of behaviour in pigs. Appl. Anim. Behav. Sci. 45 (1995) 215-224
    • (1995) Appl. Anim. Behav. Sci. , vol.45 , pp. 215-224
    • Petersen, V.1    Simonsen, H.B.2    Lawson, L.G.3
  • 51
    • 34948816062 scopus 로고    scopus 로고
    • Petersen, L.B., 1997. Halmtildeling til forebyggelse af halebid i slagtesvinestalde med fuldspaltegulv (In Danish). In: Meddelelse 349, Landsudvalget for svin, 1-4.
  • 52
    • 0001840793 scopus 로고
    • Psychological studies of exploration in animals: a reappraisal
    • Archer J., and Birke Van Nostrand L. (Eds), Reinhold (UK) Co. Ltd.
    • Russell P.A. Psychological studies of exploration in animals: a reappraisal. In: Archer J., and Birke Van Nostrand L. (Eds). Exploration in Animals and Humans, (1983), Reinhold (UK) Co. Ltd. 22-54
    • (1983) Exploration in Animals and Humans , pp. 22-54
    • Russell, P.A.1
  • 54
    • 34948820123 scopus 로고    scopus 로고
    • Scott, K., Taylor, L., Gill, B.P., Edwards, S., in press. Influence of different types of environmental enrichment on the behaviour of finishing pigs in two different housing sysyems. 2. Ratio of pigs to enrichment. Appl. Anim. Behav. Sci.
  • 55
    • 0037307365 scopus 로고    scopus 로고
    • Performance, site preference, foraging and excretory behaviour in relation to feed allowance of growing pigs on pasture
    • Stern S., and Andresen N. Performance, site preference, foraging and excretory behaviour in relation to feed allowance of growing pigs on pasture. Livestock Prod. Sci. (2003) 257-265
    • (2003) Livestock Prod. Sci. , pp. 257-265
    • Stern, S.1    Andresen, N.2
  • 56
    • 0000933706 scopus 로고
    • Arousal and exploration in growing pigs in different environments
    • Stolba A., and Wood-Gush D.G.M. Arousal and exploration in growing pigs in different environments. Appl. Anim. Ethol. 6 (1980) 382-383
    • (1980) Appl. Anim. Ethol. , vol.6 , pp. 382-383
    • Stolba, A.1    Wood-Gush, D.G.M.2
  • 57
    • 84971937261 scopus 로고
    • The behaviour of pigs in a semi-natural environment
    • Stolba A., and Wood-Gush D.G.M. The behaviour of pigs in a semi-natural environment. Anim. Prod. 48 (1989) 419-425
    • (1989) Anim. Prod. , vol.48 , pp. 419-425
    • Stolba, A.1    Wood-Gush, D.G.M.2
  • 58
    • 0037177263 scopus 로고    scopus 로고
    • Expression of rooting motivation in gilts following different lengths of deprivation
    • Studnitz M., and Jensen K.H. Expression of rooting motivation in gilts following different lengths of deprivation. Appl. Anim. Behav. Sci. 76 (2002) 203-213
    • (2002) Appl. Anim. Behav. Sci. , vol.76 , pp. 203-213
    • Studnitz, M.1    Jensen, K.H.2
  • 59
    • 0142126398 scopus 로고    scopus 로고
    • The effect of nose rings on the exploratory behaviour of outdoor gilts exposed to different tests
    • Studnitz M., Jensen K.H., and Jørgensen E. The effect of nose rings on the exploratory behaviour of outdoor gilts exposed to different tests. Appl. Anim. Behav. Sci. 84 (2003) 41-57
    • (2003) Appl. Anim. Behav. Sci. , vol.84 , pp. 41-57
    • Studnitz, M.1    Jensen, K.H.2    Jørgensen, E.3
  • 60
    • 0037258328 scopus 로고    scopus 로고
    • The effect of nose ringing on explorative behaviour in gilts
    • Studnitz M., Jensen K.H., Jørgensen E., and Jensen K.K. The effect of nose ringing on explorative behaviour in gilts. Anim. Welf. 12 (2003) 109-118
    • (2003) Anim. Welf. , vol.12 , pp. 109-118
    • Studnitz, M.1    Jensen, K.H.2    Jørgensen, E.3    Jensen, K.K.4
  • 62
    • 33746901633 scopus 로고    scopus 로고
    • Effects of species-relevant environmental enrichment on the behaviour and productivity of finishing pigs
    • Van de Weerd H.A., Docking C.M., Day J.E.L., Breuer K., and Edwards S.A. Effects of species-relevant environmental enrichment on the behaviour and productivity of finishing pigs. Appl. Anim. Behav. Sci. 99 (2006) 230-247
    • (2006) Appl. Anim. Behav. Sci. , vol.99 , pp. 230-247
    • Van de Weerd, H.A.1    Docking, C.M.2    Day, J.E.L.3    Breuer, K.4    Edwards, S.A.5
  • 63
    • 0002949238 scopus 로고
    • Behaviour of pigs in a novel semi-natural environment
    • Wood-Gush D.G.M., Jensen P., and Algers B. Behaviour of pigs in a novel semi-natural environment. Biol. Behav. 15 (1990) 62-73
    • (1990) Biol. Behav. , vol.15 , pp. 62-73
    • Wood-Gush, D.G.M.1    Jensen, P.2    Algers, B.3
  • 64
    • 34249972778 scopus 로고
    • Exploratory behavior and the welfare of intensively kept animals
    • Wood-Gush D.G.M., and Vestergaard K.S. Exploratory behavior and the welfare of intensively kept animals. J. Agric. Ethics 2 (1989) 161-169
    • (1989) J. Agric. Ethics , vol.2 , pp. 161-169
    • Wood-Gush, D.G.M.1    Vestergaard, K.S.2
  • 65
    • 0026299585 scopus 로고
    • The seeking of novelty and its relation to play
    • Wood-Gush D.G.M., and Vestergaard K. The seeking of novelty and its relation to play. Anim. Behav. 42 (1991) 599-606
    • (1991) Anim. Behav. , vol.42 , pp. 599-606
    • Wood-Gush, D.G.M.1    Vestergaard, K.2
  • 66
    • 38149148239 scopus 로고
    • The effect of a foraging device ('The Edinburgh foodball') on the behaviour of pigs
    • Young R.J., Carruthers J., and Lawrence A.B. The effect of a foraging device ('The Edinburgh foodball') on the behaviour of pigs. Appl. Anim. Behav. Sci. 39 (1994) 237-247
    • (1994) Appl. Anim. Behav. Sci. , vol.39 , pp. 237-247
    • Young, R.J.1    Carruthers, J.2    Lawrence, A.B.3
  • 67
    • 33744473165 scopus 로고    scopus 로고
    • Measuring a pigs preference for suspended toys by using an automated recording technique
    • Zonderland J.J., Veermeer H.M., Vereijken P.F.G., and Spoolder H.A. Measuring a pigs preference for suspended toys by using an automated recording technique. CIGR. J. V (2003) 1-11
    • (2003) CIGR. J. V , pp. 1-11
    • Zonderland, J.J.1    Veermeer, H.M.2    Vereijken, P.F.G.3    Spoolder, H.A.4


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.