STABILITY OF THE SUPPLY CHAIN BASED ON DISRUPTION CLASSIFICATION

Transcription

1 Hu Hu d. abos opskbog aca a eeju kasfkacje poeećaja N P N e hps://do.og/.7559/tv TATY THE UPPLY CHAN BAED N DRUPTN CLACATN Hu Hu Le h Ha Ma B Ra ga scefc pape Dsupos ca desoy he saby of a suppy cha esug osses busess hus deeg he fuece of vaous dsupos o a suppy cha s sgfca. Howeve cue sudes have ay coceaed o he saby of a suppy cha ude oa codos expog he effecs of veoy eve o he syse sae ad og he fueces of dsupos. Wh he ack of aayss o he chaacescs of dsupo whe odeg swched syse dsupos wee cassfed ad he ead e of each dsupo eve was deeed. Dua swch ues wee poposed cosdeg he sock dyacs ad ead e deays. A swched syse ode of he suppy cha wh upe deays was he cosuced. yse saby ude dffee eve dsupos was vesgaed usg suao ehod. Resus show ha he saby scope of veoy adjuse coeffces deceases as aspo ead e ad dsace coeffces cease. Dsupo cassfcao has dffee effecs o he suppy cha. Ude hgh eve dsupo he veoy eve of aufacue sgfcay chages ad he suppy cha syse oses s saby ad ecoues dffcuy ecoveg s sabe sae. Howeve ude geea dsupo he suppy cha syse ecoves o saby gaduay. The pese expoao eches he swched odeg ehod of he suppy cha ad heps s cha ebes peve ad espod o dsupos effecvey. Keywods: dsupo; saby; suppy cha; swched syse abos opskbog aca a eeju kasfkacje poeećaja zvo zasve čaak Poeećaj ogu uš sabos opskbog aca šo ezua posov gubko pa je odeđvaje ujecaja azh poeećaja a opskb aac začajo. Među posojeće su se aaze ugavo usedooče a sabos opskbog aca u oa uvjea a sažvae su učke aze zaha a saje susava zosavjae ujecaj poeećaja. edosako aaze o kaakeskaa poeećaja pko odeaja pebacvog susava poeećaj su kasfca odeđeo je vjee povedbe svake poeećee aze. Pedožea su dvoja pava pebacvaja s obzo a daku zaha zasoja u spouc. zađe je ode pebacvog susava opskbog aca s všesuk zasoja. abos susava pod azč azaa poeećaja spaa je pooću suacjske eode. Rezua pokazuju da se opseg sabos koefcjeaa pagodbe zaha sajuje s poaso koefcjea veea pjevoza udajeos. Kasfkacja poeećaja a azče učke a opskb aac. Pod poeećaje a vsokoj az aza zaha pozvodje začajo se jeja a susav opskbog aca gub svoju sabos suseće se s poeškoćaa u vaćaju a sabo saje. Među pod opć poeećaje susav opskbog aca posupo se vaća u sabos. adašje sažvaje obogaćuje poakuu eodu odeaja opskbog aca poaže čaova aca da učkovo spječavaju eagaju a poeećaje. Kjuče ječ: opskb aca; poeećaj; pebacva susav; sabos oduco uppy cha s a copex syse wh vaous ypes of uceaes. Cosequey he apd deveope of ecooc gobazao ad copeo eaoazao seghes he dyacs ad copexy of he suppy cha evoe whch heaes s saby. Recey dsupos occu fequey. Dsupos ca ead o cos cease busess eupo eepse bakupcy ad eve suppy cha dsegao whch daages he saby of a suppy cha []. Hece suppy cha ebes us udesad he effec of dsupos o he pefoace of a suppy cha ad gasp he ues of evouo ude dsupos o ze he daage ad oss of ebes. Howeve cue sudes o suppy cha saby have ay focused o saby judge ude oa codos such as ea poduco dsubace ad chage he veoy eve of eepses. Moeove sudes o suppy cha saby ad evouo ude dsupos ea ackg ad he dffee effecs of dsupo chaacescs o a suppy cha syse ae goed. ece yeas swched syse heoy was oduced o suppy cha aea. odeg swched syse cue sudes have exaced he sge ue fo sock dyacs whch goed he chaacescs of dsupos as show Refeeces [2 5]. Hece cosdeg he swched chaacescs of a suppy cha ude dsupos a swched syse ode wh dua swch ues of sock dyacs ad dsupo chaacescs s bu. yse saby ude dffee eves of dsupos s vesgaed usg suao heeby sgfcay povg he odeg echque ad eaed eseach aeas as we as beg paccay sgfca fo suppy cha ebes o effcey peve ad eac o dsupos ad educe coss ad osses. 2 ae of he a Cue sudes o he saby of suppy cha have focused o saby ude oa codos. uppy cha saby has bee suded he eaue [6 9]. aby judgg ehods cude he Lyapuov saby pcpe foao eopy ewok coo obus coo ad suao ehod [ 3]. Howeve saby has aey bee aaysed ude dsupos ad sudes o he saby of suppy cha swched syse ude dsupos ae s ackg especay he syse of dua swch ues. Theoy of swched syse was ecey oduced o suppy cha eseach. Lu e a. [2] aaysed he saby ad dyac chaacescs of soe wo-sage suppy chas wh he swched ode ad ea ax equay LM oo Maab. The dsbuo sock was dvded o suffce ad suffce o whch was aso he swch ue souce. Hu [3] suded he saby of a hee-sage suppy cha wh poduco capaby ad e deay cosas. Based o swched syse Tehčk vjesk

2 aby of he suppy cha based o dsupo cassfcao odeg suppy cha saby was aaysed wh Maab suao. L e a. [4] vesgaed he pobe of H coo fo a cosed-oop suppy cha CLC syse. Deayed pu coo saegy was adoped ad suffce codos wee povded o guaaee he saby as we as he H pefoace fo he CLC syse. he ode swch ue was based o he sock eve of he aufacug ad ecycg waehouses whch s s ude he sge swch ue pobe. Gaca e a. [5] poposed a swched coo syse fo a sea suppy cha ude a deceazed coo saegy. Moeove sock codos wee dvded o fe suppy ad hgh sock fe suppy ad ow sock ad ed suppy. The swch ue was he sock dyacs of each echeo. uao esus dcaed ha he swchg coo was oe effecve ha he popooa ad ega coo pocy o veoy ackg. The cue sudy exaced sge swched ue fo he veoy dyacs ad coceaed o how he veoy eve woud affec he saby of suppy cha. wched syse odeg faed o cosde dsupo chaacescs ad excuded dua ues. he chaacescs of dsupos Wso [4] dvded he dsupos o aua dsase abou dspue depedece o a sge suppe suppe bakupcy eos wa ad poca saby. ke e a. [5] vesgaed he ypes ad aagee of sks faced wh he suppy cha of eae ad caegozed dsupos o hee o hghy feque sks ad dsupo o feque sks. Dsupos ae caused by ehe aua e.g. eahquake foods fe ad suas o a-ade sks e.g. eos aacks accdes ad cybe-aacks [6 7]. addo o hese dsupos suppy chas face eupos caused by sevea souces wh hee uceaes such as dead fucuaos suppy capacy chages ead e vaaby ad exchage ae voay [8]. Cobed wh he chaacescs of he evouo of suppy cha dsupos u ad J [9] dvded evouo o hee sages such as he peveo phase coo phase ad espose sage. he pac of dsupos Q [2] suded how chagg ake deads ad poduco coss of aufacue caused by dsupos affeced suppy chas. J [2] dscussed he eaoshp bewee he opeao paaees of suppy cha ad he dffuso of dsupos ad ceaed a oss assesse syse of dsupos. These sudes aaysed he chaacescs of suppy cha cosdeg he cause fequecy evovg sage ad pac. Cosdeaby expog he pac of vaous dsupos o he suppy cha ad eveag he eacve eaoshp bewee suppy cha ad dsupos ae ew decos ha pese he gasp o he ues of suppy cha evouo. ou sudy dsupos have vaous effecs o aspoao eadg o vaous deays. Thus dsupos ae cassfed o dffee eves accodg o pac degees. hs ae we ca fd he quaave eaoshp bewee dsupos of dffee eves ad deays of ead e ad bud he swched ode wh dua ues. The eade of hs sudy s ogazed as foows. eco 3 s dedcaed o he odeg of suppy chas ude dsupos based o swched syse heoy. eco 4 deosaes he suao of suppy cha Hu Hu e a. saby ude dffee eveed dsupos ad povdes sesvy aayss. ay eco 5 peses cocusos ad soe deas fo fuhe woks. 3 Mehodoogy 3. Cassfcaos of dsupos hs sudy dsupos efe o cdes ha decy affec oad aspo codos ad cause deays such as eahquakes foods ad sowsos. 3.. Dsupo eves ad he pac o aspoao Dsupos ae dvded o fou caegoes aey hghy seous seous eavey seous ad geea. Tab. shows he pac of dsupos of dffee eves o aspoao. Tabe pac of dsupos of dffee eves o aspoao Dsupo eve dcao Leve Dsubace eve Daage degee of oads Reag capacy of oads Coecv y of oad ewok Aveage speed of oad ewok k/h Leve hghy seous eupo A oads ae daaged bady Leve seous eous cogeso oe oads ae daaged seousy ad cas ca baey go hough Leve eavey seous Cogeso oe oads ae daaged ad cas ove sowy Leve V geea ow affc oe oads ae daaged sghy ad cas ove a ow speed < 2% [2% 5% [5% 8% 8% Poo coecvy Geea desy ad coecvy Dese oads ad good coecvy Hgh desy of oads ad excee coecvy [ 9 [9 22 [ Dsupo pac o aspoao ead e As show Tab. he pac of dsupos ca be expessed quaavey by he speed. The dsupo s oe seous so he speed s owe [22]. The eda of aveage speed s egaded as he speed of oads. eve V he speed s se as 5 k/h. Assug he dsace s * k ad he ead e s L s Tab. 2 shows he pac of dffee dsupo eves o ead e. Tabe 2 pac of dsupos of dffee eves o he ead e Leve V peed of oads k/h Taspo e s /95 /25 /25 /5 Deays of ead e s /95-L /25-L /25-L /5-L 3.2 wched ode of he suppy cha 3.2. Pobe descpos ad assupos g. shows he hee-sage suppy cha syse coposed of suppes aufacues ad eaes. 88 Techca Gazee

3 Hu Hu d. uppes Maufacues Reaes Make gue Thee-sage suppy cha syse The deaed assupos hs sudy ae as foows: Whe he veoy of aufacues ad eaes s suffce he veoy w be copeey deveed o ee he odes ad he es w have o wa fo he ex peod. 2 Maufacues ad eaes check he veoy a he ed of each peod. 3 The veoy of suppes ca aways ee he dead of aufacues. 4 The oss of -as veoy s. abos opskbog aca a eeju kasfkacje poeećaja 5 The ode deay peod fo a ebes s. 6 The ead e fo suppes o aufacues s wheeas ha fo aufacues o eaes s. 7 The suppy cha ebes foecas he deads usg expoea soohg ehod. 8 Te us of aw aeas ae asfeed o a - u poduc. 9 oa codos he aveage speed of a ebes s 7 k/h. The peodc acves of aufacues ad eaes ae show g. 2. gue 2 Acvy daga of a suppy cha Whee: s - suppe; - aufacue; - eae; - peod ; - odeg quay of ebe peod ; R - ecevg quay of ebe peod ; - devey quay of ebe peod ; - hodg veoy of ebe peod ; WP - -as veoy of ebe peod ; - foecas dead of ebe peod ; - shoage dead of ebe peod ; WP - expeced as veoy of ebe ; - expeced veoy of ebe ; D - ake dead Mode fouao Expoea soohg s used o foecas deads as show Eq.. D { } whee s he soohg cosa ad Ds D D. The veoy he waehouse s expessed by Eq. 2: R { } 2 The shoage quay s expessed by Eq. 3: D { } 3 The devey quay s show Eq. 4: { s } j 4 j Gve ha he suppe ca ee he eeds of he aufacue s The devey quaes of he aufacue ad eae ae show Eqs. 6 ad 7. D 5 6 D D The veoy as s show Eq. 8. WP WP R { } j s 8 j The APBPC saegy s adoped whee s expessed as Eq. 9. WP WP { } 9 7 Tehčk vjesk

4 aby of he suppy cha based o dsupo cassfcao Hu Hu e a. 9 Techca Gazee whee: s he adjuse coeffce of he veoy he waehouse s he adjuse coeffce of he veoy as. s he expeced veoy eve he waehouse. WP s he expeced veoy eve as. Gve ha he veoy as suffcey ees a he dead ead e he foowg Eq. s obaed: L WP The vaabes of he syse sae ae defed as WP as he space sae ode s esabshed. s he efeece pu D s he exea efeece ad s he syse oupu. The sae space equao s show Eq D WP WP D D WP WP whee ad ae vaabes. Moeove has fou possbes whe he syse ecoues fou eves of dsupos. Based o hs he swch ues ae exaced wch ues s we defe [ ] T WP WP ad [ ]. D T Maufacue s veoy s suffce We subsue 2 2 o Eq. ad ca be expessed Eq D C B A 2 whee A B C D New swch ues w be esabshed whe he syse ecoues oe of hese fou eves. Hghy seous As show Tab. 2 whe a hghy seous dsupo occus * /95 whee s he dsace bewee he aufacue ad suppe. s he dsace coeffce. s he dsace bewee he aufacue ad eae. Ude oa codos /7 so * 74. The space sae equao s show Eq D C B A 3 whee A B C

5 Hu Hu d. D 2 eous ay we oba * 34. The space sae equao s show as Eq. 4. A B 2 C 2 D Reavey seous Lkewse * 28 ad he space sae equao s expessed as Eq. 5. A B 2 C 2 D hs way A3 B3 C3 D 3 s oed. 4 Geea ay * 8 ad he space sae equao s peseed as Eq. 6. A B 2 C 2 D hs ae A 4 B 4 C 4 D 4 s oed. 2 Maufacue s veoy s suffce Lead e w aso chage whe he syse ecoues fou eves of dsupos. The deaed equaos of fou dsupo eves w o be descbed due o he sa foua devao pocess. hs sudy he swched ode s show Eq. 7. A B 2 C 2 D Maufacue s veoy s zeo ay a ode of swched syse s esabshed as show Eq. 8. s sg * 7 4 s sg * 3 4 s sg * 2 8 s sg * abos opskbog aca a eeju kasfkacje poeećaja The swch ues ae suazed Tab. 3. Tabe 3 wch ues & sg σ sg * 7 4 σ 2 sg & sg 3 4 σ 3 sg & sg 2 8 σ 4 sg & sg 8 σ 2 sg & sg 7 4 σ 22 sg & sg 3 4 σ 23 sg & sg 8 σ 24 sg & sg 2 8 σ 3 sg & sg 7 4 σ 32 sg & sg 3 4 σ 33 sg & sg 2 8 σ 34 sg & sg 8 4 Resu aayss ad dscusso Judgg he saby of he pe-deay dscee sae space ode esabshed hs sudy s dffcu wh adoa ehods. Thus we uze Maab suao o sudy he effec of dsupos o he suppy cha. 4. esvy aayss of ude oa veoy fucuao 4.. Whe ad ae cosas Whe he heshod of saby s 29 3 ad whe 2 ad 3 he heshod s 2 2 ad 6 9 especvey. The suao fgues whe ad ae show gs. 3 4 ad 5 especvey. A B 2 C 2 D suay he ode of he swched syse s esabshed based o he veoy dyacs ad dsupos of dffee eves as show Eq. 9. A σj C B σj σj 2 D 2 σj { 2 3} j { 2 3 4} 9 The swch ues ae as foows: s s s j sg sg 2 j 3 j sg gue 3 uao esu whe 29 3 Tehčk vjesk

6 aby of he suppy cha based o dsupo cassfcao Hu Hu e a. The saby heshod of deceases as ceases. Moeove affecs he syse saby oe ha bu s oe sesve. gue 7 uao esu whe 2 4 gue 4 uao esu whe gue 8 uao esu whe gue 5 uao esu whe Whe ad ae cosas 2 Whe he heshod of saby s 2 2 ad whe 2 ad 3 he heshod s 4 ad 9 9 especvey. The suao fgues whe ad ae gs. 6 7 ad 8 especvey. We ca fd ha he heshod of deceases as ceases. 4.2 uao of he saby ude dffee dsupo eves We assue 3 3 ad he syse w suffe a dsupo a he begg of he 5 h peod Hghy seous g. 9 he aufacues veoes as ad sock he waehouses boh fucuae daacay; he axu apudes ae 43 ad 58 ad he gaps bewee peaks ad vaeys ae 654 ad 72 especvey. The syse becoes oe usabe ad cao ecove o saby wh he peod T eous ay g. he aufacues veoes fucuae cosdeaby ad he syse s usabe wh he peod T. Copaed wh g. 9 he fucuao educes whch dcaes ha he efeece weakes whe dsupo eve deceases. gue 6 uao esu whe Techca Gazee

7 Hu Hu d. abos opskbog aca a eeju kasfkacje poeećaja Geea g. 2 he aufacues veoes sabze wh e. ay he syse ecoves saby he 8h peod showg ha he suppy cha ca eove he feece of dsupos wh a sho peod. gue 9 uppy cha pefoaces ude hghy seous dsupos gue 2 uppy cha pefoaces ude geea dsupos gue uppy cha pefoaces ude seous dsupos Reavey seous g. ahough he aufacues veoes fucuae he syse eds o ecove wh he peod T. Reseach shows ha ude hs eve of dsupos he suppy cha ca espod effcey ad ecove saby by adjusg s opeao uaey. cocuso dsupos weaky affec he eaes veoy bu sgfcay affec he aufacues veoy cudg veoes as ad sock he waehouses. Meawhe dffee dsupo eves fuece he saby of he syse vayg degees. Pacuay hghy seous ad seous dsupos sgfcay ake he syse fucuae wh he eseach peod. Ths fucuao s chaacezed by age apudes og ecovey e ad appae fucuaos quay. The eavey seous ad geea dsupos aso ceay affec syse saby bu he syse ca ecove by sef a sho e. 4.3 uao of he saby ude dsupos of whoe pocess The whoe pocess of dsupos fo he occuece o edg s copex. sa saces he syse w bfucae whe suffes dsupo sgas a vaous eses. gue uppy cha pefoaces ude eavey seous dsupos gue 3 Recovey o saby Tehčk vjesk

8 aby of he suppy cha based o dsupo cassfcao 4.3. Recove o saby Whe a efeece sga of ow esy s posed o he suppy cha syse he sae evouo of he suppy cha s usaed g. 3. The ee pocess cudes cubag busg speadg ad eveuay ecoveg saby by sef. Afe he syse esoes saby he aufacues veoy ceases by 38 us. Ahough he suppy cha ca sabze sef evesbe egave pac s occus afewads Cash The syse w cash whe dsupos ae oo sog o oeae. As show g. 4 he veoes fucuae oe obvousy dug he eseach peod T 7 whch eas ha s possbe fo he syse o esabze hough sef-eguao. Hu Hu e a. suao. Moeove he saby heshods of he veoy as ad he adjuse coeffce ae shapy educed dcag ha hgh dsupo eves cease he vueaby of he suppy cha syse ad seousy pac syse saby. Dug geea dsupos he syse ecoves saby by sef so he heshod age does o chage obvousy. 4 By suag dsupos houghou he fe cyce he suppy cha s foud o bfucae ude dffee eves of dsupos. addo he syse sabzes sef whe he esy of dsupos does o exceed he sabe heshod whch s cosse wh he pacca pefoace ad cue aayss o he suppy cha. Moeove he swched syse ode of suppy cha s based o he veoy dyacs of ebes ad eve of dsupos whch dscusses he eaoshp bewee he chaacescs of dsupos ad he evouo of he suppy cha syse ad povdes a dea fo a ew ode of suppy cha ude dsupos. Howeve dsupos ae copex ad he chaacescs chage wh he evouo sages hus copehesve exaco of he dyac chaacescs shoud be cosdeed fuue sudes. copaso wh he ehods of Lyapuov saby pcpe ad foao eopy suao ca oy evauae saby appoxaey fo he ed of syse evouo. Theefoe hs sudy ca be exeded o ceay defy he bode of saby ad he heshod vaues of he swched ode. Ackowedgees 5 Cocuso gue 4 yse cash To addess he ack of aayss o dsupo chaacescs he saby eseach o suppy cha ude dsupos swched heoy was oduced o bud he syse ode. The suppy cha dscee ea swched ode was esabshed cosdeg sock dyacs ad ead e deays. Maab/MULNK suao was he uzed o defy he fuece of vaous dsupos o he suppy cha. The foowg cocusos ae obaed: To esabsh he assocao bewee dsupos ad suppy cha saby dsupos ae cassfed o fou caegoes accodg o he effec o aspoao. The eaoshp bewee he dsupo cassfcao ad ead-e deay s aayzed quaavey whch cosdes he chaacescs of dsupos ad ays foudao fo swched syse odeg. 2 he sesvy aayss he saby heshod age of he veoy adjuse coeffce esses as ead e ad dsace coeffce ceases. eay ceases ead e ad dsace eghe he eaco e of he syse heeby educg he veoy adjuse fo he syse ad ode quay. 3 We fd ha dffee dsupo eves fuece syse saby vayg degees by coducg Ths sudy was suppoed by he Naoa Naua cece oudao of Cha he Cha Posdocoa cece oudao 24M5524 he haax Naua cece oudao 27JM76 25JQ7272 ad 25JQ624 ad he Cha udaea Reseach uds fo he Cea Uveses Refeeces [] Ades M. V.; Cavada M..; Ae. U. Rsk aayss fo a dusa copay he pash eecca ake. // DYNA pp [2] Lu H..; Wag H. W.; Wag Z. G. Modeg he dyacs of a wo-sage suppy cha: a swch syse heoy appoach. // Joua of Huazhog Uvesy of cece ad Techoogy pp [3] Hu M. M. Modeg ad suao of suppy cha swched syse wh escos of poduco capaby ad deay. // ascs ad Decso. 822 pp [4] L Q. K.; L M.; Ja. C. wchg coo of cosedoop suppy cha syses wh Makov jupg paaees. // Aca Auoaca ca pp [5] Gaca C. A.; beas A.; Vaova R. A swched coo saegy fo veoy coo of he suppy cha. // Joua of Pocess Coo pp hps://do.og/.6/j.jpoco [6] Lu Y. J.; Tag. W.; Zhou Z.. udy o he chaoc of poduco decso egave suppy cha syse. // Joua of Maagee Egeeg pp Techca Gazee

9 Hu Hu d. [7] ao Y. M.; Wag. Y. Eay-wag aayss o saby of suppy cha based o eopy heoy. // Joua of dusa Egeeg ad Egeeg Maagee pp [8] Zhag. L.; Wag Y.. LM-based eseach o saby of eage suppy cha wh gey o-ea chaacescs. // dusa Egeeg Joua pp [9] Hu H.; Hu D. W.; Che D. udy o ey coeao saby suppy cha coodao. // dusa Egeeg Joua pp [] Duowoju. A.; Cha H. K.; Wag. J. Eopy assesse of suppy cha dsupo. // Joua of Maufacug Techoogy Maagee pp hps://do.og/.8/ [] Luo J. Z.; Yag W. Coo of suppy cha based o swched ode of sock eve. // Maheaca Pobes Egeeg pp. -8. hps://do.og/.55/24/ [2] Wag Y. E.; u. M.; Mazec. aby of swched oea syses wh deay ad dsubace. // Auoaca pp hps://do.og/.6/j.auoaca [3] gua M.; Pecado V. M. aby of Makov egeeave swched ea syses. // Auoaca 6926 pp hps://do.og/.6/j.auoaca [4] Wso M. C. The pac of aspoao dsupos o suppy cha pefoace. // Taspoao Reseach Pa E: Logscs ad Taspoao Revew pp hps://do.og/.6/j.e [5] ke A.; Gopaaksha M. Maagg dsupos suppy chas: a case sudy of a ea suppy cha. // eaoa Joua of Poduco Ecoocs pp hps://do.og/.6/j.jpe [6] Hecka.; Coes T.; Ncke. A cca evew o suppy cha sk-defo easue ad odeg. // ega pp hps://do.og/.6/j.oega [7]Jabbazadeh A.; aha B.; eug. Dyac suppy cha ewok desg fo he suppy of bood dsases: a obus ode wh ea wod appcao. // Taspoao Reseach Pa E: Logscs ad Taspoao Revew pp hps://do.og/.6/j.e [8] Esaeka M.; aha B.; aks J.; Govda K.; Kua A.; Mo J. A acca suppy cha pag ode wh upe fexby opos: a epca evauao. // Aas of peaos Reseach pp hps://do.og/.7/s [9] u Q.; J J. H. udy o he evouo pocesses of suppy cha dsupo based o fas esoao. // of cece pp [2] Q Y. H.; Cao. Y.; Rua P.; og Q. N. The coodao of suppy cha he case of asyec foao o he aufacug cos ad ude dsupos. // Joua of Huazhog Noa Uvesy Naua cece pp [2] J J. H.; Bao.; u Q. udy o he dffuso echas ad oss assesse of suppy cha dsupos. Cha cece Pubshg House Bejg 23. [22] Jeha M.; Jaes P.; Ahoy A..; Adesh A. Taffc ecovey e esao ude dffee fow eges affc suao. // Joua of Taffc ad Taspoao Egeeg Egsh Edo pp hps://do.og/.6/j.je Auhos addesses abos opskbog aca a eeju kasfkacje poeećaja Hu Hu Ph.D. Assocae Pofesso Coespodg auho choo of Auoobe Chag a Uvesy Mdde eco of ouh 2d Rg Road a 764 haax Povce P. R. Cha E-a: huhu@chd.edu.c Le h Gaduae sude choo of Taspoao ouheas Uvesy ouheas Uvesy Road No. 2 Najg 289 Jagsu Povce P. R. Cha E-a: @qq.co Ha Ma Gaduae sude choo of Auoobe Chag a Uvesy Mdde eco of ouh 2d Rg Road a 764 haax Povce P. R. Cha E-a: h23wy@63.co B Ra Ph.D. Pofesso Depae of Cv & Evoea Egeeg Uvesy of Wscos-Madso 22 Egeeg Ha 45 Egeeg Dve Madso W 5376 UA E-a: ba@wsc.edu Tehčk vjesk