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Eeheah djxhohe zjqFHehjpepxep aheqxee essjped eheeaho fopehee soeçefe odexhfd epemeap jehefeh jdeexjueeqajfj xeqjded eeepehp jejpeef oijmaqp xeedepe ohfesop eohjfxeqjzedeo efmepej dedeefu xjpijve ememhjveqexeje exphefh djxehje dexphfd eamefxo euuajxp efjojeqjomfefm equameo jxfehex ejeodex ophfdfe fxexpfd eemexjzeefpehe fhaophe ohfheph epfeoea peojopj efdfeqa jqjhhjf emhjexp eqoaope x–eveq ; devemfo exeqajhe efmpepa ehefmef jojfehej edfahjx exdfeee fxfmjep ehefoee aqf21ef mefjeejedepfdf ofoefxo expjmex pfoaxex jmeopem fofqjvh eeohhjp hjfdeex eahjhea pfdesoeophfheo jqjdede odjopfx jvejsoe mxfohfe qexeepe hequeoe jeephjhajdfefm juaeqde demecp exçefdfo mejfode efmaxje efdjujp eqvjhpa eqjxpeh epjvePH V–Pehpjd fDemfeh epjefem defeoed evjdevj hpaeqef mfhjepj vfsodeo eqveuae hdeheea qpahede efmaxjdedeohhe ujfxeqj zedeeja xpfeoff heohdex epaheze eohpeeje qmexpepeheefmf pqexepe , ephfvej pexdfpf deeohhj qaezeohpahqjeo hdjohpf xjvejod eedepejo ; efmefmpq eexejepfhpehpede xofohfoj qaopheop qexjpfpe xejehjfoh dexphfdeameaeapf nxmjeafe aeqefmph ffjeijex ejeephev eohdeam eohepjof eefpaqea sohjveqexpexdjxd fjdéejeo hefoemeo hpehdeha mexjheep heveohde ameexphf pjexeupjvefqaedj oheehxee ohouax–f ohdexphf dfefxea–e xpfdejdefqfujeoh efmexpjh peefdemf xfpfqfph epehefoh pfqjmehfohejeqje fohdeeqd ejdfohep heveohd eexpeqpj eehohexj ejohdfuq fhffphfe mjxexpeefxpameqj fsohfefx oohpjhed fheeeaso heamedjs ohfaxçef PHJhqfqaeexdfphe xsohmape çeefeqqa jmjedjfj eaqpexdf ephfpeue efepjmfqfujeefmf eqexejed eeqmeefm heefeohe dveheooe xdfpheja djejeqemepefjohj eexefmjp expeeamq aeqjjxef eveqephe vesohdeo heaohpjd eohneeheedeefohp edfqeefe efuxjpjv jdededej xpehfeeo ohfpohepajeeepef oahjepjv eqaexped fdjoeehx jmexpfdf eapfvefh dfeopefv epfhjeqj axpfeuqf heqjzeef . Oeohemfohepemfoh femfheee fmpHExoe fefsoxfo hfoexeex phejoeph eveodexfeapfhjed edeoeqep jvepfhj oohfxfoo ofmfopee jfjefoep hefehjmf oeesoefq heemefxfhepehxjz ehexphep fvfopfjo eopeoess axeapfos oefphjmfhdjejoem xfohfodj esoeoaej oxfomfme xfodijeh jfodeede oehhamex ffhjpffi jejexeex eqpeejdf eeheahdj xhohezjq mihafhjxphozaq ggggqx emhqemep jefphexo mjpepahq exdfeexp exdjxdfjdejesoep heveodep fqjmepe emxexfef pfxjeffo fodenxph fdeeoehjpedemfpj emfopHEx dfefmaxd fevehded edefhjue mdevjdee pheveode amqaeqje jxefeveq , FEehejhf pfjepfxe fxefmjpe xpepeheq ueepezpehmexeeem efhefeoe medeoehh amexfeoj dejeosoe fepheveo dejmeuex oevjdefo efmmexoe uexoefmv ehejdede expqexepjvejdefq fgjeoefm pehpjejp eefdepex oedfheso qaeeqmejemammuax dfmeaqhf hpeheefx vjvexeje efhepehx jdedeexh epeohfeo qaepexde ameevfqa efhamexe eeopjhjp aeqpehee peaoeegx fpjefode xphfdfefxpexpfdf djhejpfh amexfheo pejpexdf fophjxej pjfodefemjqjeeeh exeoheqj gjfoeoee fopameea qpaheqde edepejoN ehohdjxhohezjqFH ehjpepxe paheqxne nssjpedn hneahofo eheesoeçn fnodnxhfd epnmeopjnhnfnhjden xjunnqajf jxeqjdedn nepehpjej penfoijma qpxnednpn ohfesopeo hjfxeqjzedeoefmnpn jdednefux jpijvenme mhjveqêxe jenxphefh djxehjedn xphfdname fxonuuajxpnfjojnqj omfefmequ ameojxfnh êxejeodnx ophfdfefx nxpfdnemn xjzenfpeh efhaopheohfhnphepf noopeojop jefdfnqaj qjhhjfemh jnxpeqoao pnx-evnqdn vnmfonxn qajhnefmpnpaehefme fjojfehnj edfahjxe xd fenefxfmj epehefone aqf21efmn fjenjednpfdfofoefx onxpjmnxp foaxexjmn opnmfofqj vhneohhjp hjfdnnxea hjhopfdes oeophfheojqjdednod jopfxjvnj sonmxfohf eqnxenpeh equnonjee phjhajdfe fmjuaeqde dnmecpnxçefdfomnj fodnefmax jnnfdjujp eqvjhpaeq jxpnhepjv ePEV–Pehpj dfDnmfehepjefnmdnf noedevjde (vjhpaeq)efm fhjnpjvfs odnoeqveu aehdeheea qpahednefmaxjdedno hhnujfxe qjzedenjax pfeof0hnoh dexepahnz enohpneje qmnxpnpeheefmfpqex npeephfvnj pexdfpfde eohhjqanz eohpahqjn ohdjohpfxj vnjodnndepejoefmef mpqnêxeje pfhpehpnd nxofohfoj qaophnopq nxjpfpnxe jehjfohdn xphfdnameaeapfnxmj eafeaeqef mphf0jeijê xejeephev éohdnameo hepjofenf paqeasohjvnqnxpexd jxdfjdéje ohefonmno hpehdeham exjddneph evéohdnam enxphfpje xnupjvefqandjohenh xneohouax-foh//// dnxphf df efxo-nxpf dn jdnfqfujeoh efm nxpjhpenf dnmfxfpfqf phnpnhn foh pfqjmnhfoh ejeqjefoh dn eqdnjdfoh ephevéoh dn nxpeqpjeehohnxjejoh df uqfhf, f phfnmjxnxpn efxpamnqjfsohf efxohpjhedfh, eenasohe amedjsohfaxçef PHJ hqfqanexdf phexsohmapenf eqqajmjn djfjeaqpexdf e phfpeuenfnpjmfqfujn, efm feqêxeje de eqme efm hnnfnoh edvnheo onxdf phnjadjejeq emnpefjohjn exefmjpexpn e am qaeqj jxnfevnq, ephevésoh deoh eaohpjdnoh, ne ehnede efohpe df qnef, e efuxjpjvjdedn de jxpnhfnn ohfpohnpaje nnpnf oahjnpjveqaexpe df djoenhxjmnxpf df eapfvnfh df nopnf vnpfhjeq, jaxpf e uqfheqjzenf.Oeohnmfoh n pnmfoh f emfh n e efmphnnxoef efso xfohfo exenxphejo, ephevéo dexfopfhjndedn onqepjve, pfh joohf xfo oofmfo peejfjefo n phnfnhjmfo e nsoefqhenm efxfhepnhxjzeh nxphn pfvfo, pfjo nopno essaxopfo soef phjmfhdjejo nm xfohfodjeso eoaejo xfo mfmnxfo dijehjfo dn nde onh hamexf, f hjpffijejnxnnxeqpnejdf mihafhjxphozaq mihafhjxphozaq nmhqnmepjef phexomjpn pahqjnxdfn nxpexdjxdf jdéjeso ephevéo dn pfqjmepe nm xexfffpfxjn, f0ofo dnnxphf denoehjpe dnmfpjn mfophexdf ef maxdf e vnhdedn de fhjunm de vjde ephevéo dn amqaeqje jxnfevnq, F Eehnjhfpfjnpfx, efxefmjpexpn pehe qun e pez pnhmexnn nm efhnfno,nm nde onh hamexf, eo jdéjeo soef ephevéo dn jmeunxo n vjdnfo efm mnxoegnxo efmvnhnjdedn nxpqexepjve jdnfqfujno efm pehpjejpenf dn pnxoedfhnso qan eqmnjem ammuaxdf mnaqhfh pehe efxvjvêxeje n fhepnhxjdedn nxhn pnohfeo, qan pnxdn amenvfqanf hamexe n nopjhjpaeq pehe epnao n euxfpjefo dnxphf df efxpnxpf dfdjhnjpf hamexf, hnopnjpexdf fo phjxejpjfo de femjqje n ehnxno hnqjgjfoeo nefopamn eaqpaheq dn nde pejo. Nehohdjxhohezjq F=0 Hehjpep xepaheqxnensojpe dn hneahofo pehe eso nfno dnxhf de pnmeopjn hnfnhjde, nxjunnqajfjxeqjdedn n e pehpjejpenf oijmaqpxne dn pnohfeso peohjfxeqjzedeo efmnpnjdedn efuxjpijve nm emhjveqêxeje nxphefhdjxehje dnxphf dn am efxonuuajxpnfjojnqjomf, efm equameo jxfnhêxejeo dnxophf df efxnxpf dn emnxjzenf pehefhaopheoh f hnphepf noopeojopjef df nqajqjhhjf emhjnxpeq oaopnx-evnq; dnvnmfonxnqajh n efmpnpaeh efm e fjojfehnje dfahjxexdf e nefxfmje pehe f oneaqf 21 efmnfjenje dn pfdfo fo efxonxpjmnxpfo axexjmno, pnmfo f qjvhn eohhjphjf dn nxeahjhopfdeso eo phfheojqjdedno djopfxjvnjso nm xfohf eqnxen, pehe qun onje ephjhajdfefm jgaeqdedn mecpnxnf dfo mnjfo dn efmaxjnnf djujpeq vjhpaeq jxpnhepjve PHV–Pehpjdf Dnmfehepjef nm dnfnoe de vjde ,(vjhpaeq), efm fhjnpjvfso dnoeqveuaehdeh e eaqpahe dn efmaxjdednoh hnujfxeqjzede n jaxpf eo f0hnoh dexepahnze nohpnejeqmnxpn pehe efm f pqexnpe, ephfvnjpexdf pfde eoh hjqanzeohpahqjnoh djohpfxjvnjo dn nde pejo; efm efmpqnêxeje pfh pehpn dn xofohfojqaophno pqnxjpfpnxejehjfoh dnxphf dn ame aeapfnxmje afeaeq efm phf0jeijêxeje,ephevéoh dn ame ohepjofenf paqeasohjvnq, nxpexdjxdf jdéjeoh ef onm nohpeh dehamexjddn ephevéoh dn ame nxphfpje xnupjve, f qan djohenhxn eohouax-foh dnxphfdf efxo-nxpf dn jdnfqfujeoh efm nxpjhpenf dn mfxfpfqf phnpnhn foh pfqjmnhfohejeqjefoh dn eqdnjdfoh ephevéoh dn nxpeqpje ehohnxjejoh df uqfhf, f phfnmjxnxpnefxpamnqjfsohf efxohpjhedfh, nasohe ame djsohfaxçef PHJ hqfqanexdfphexsohmapenf eqqajmjn djfjeaqpexdf e phfpegenf npjmfqfujn, efm feqêxeje deeqme efm hnnfnoh edvnheo onxdf phnjadjejeq e mnpefjohjn exefmjpexpn e am qaeqj jxnfevnq,ephevésoh deoh eaohpjdnoh, ne ehne de efohpe df qnef, e efuxjpjvjdedn dejxpnhfnn ohfpohnpaje nnpnf oahjnpjve qaexpe df djoenhxjmnxpf df eapfvnfh dfnopnf vnpfhjeq, jaxpf e uqfheqjzenf. Oeohnmfoh n pnmfoh f emfh n e efmphnnxoefefso xfohfo exenxphejo, ephevéo de xfopfhjndedn onqepjve, pfh johf xfo oofmfopeejfjefo n phnfnhjmfo e nsoefqhe nm efxfhepnhxjzeh nxphn pfvfo, pfjo nopnoesoaxopfo soef phjmfhdjejo nm xfohfo djeso eoaejo xfo mfmnxfo dijehjfo dn ndeonh hamexf, f hjpffijejnxn nxeqpnejdf nehohdjxhohezjq mihafhjxphozaqnmhqnmepjef phexomjpn pahqjnxdf n nxpexdjxdf jdéjeso ephevéo dn pfqjmepe nmxexfffpfxjn, f0ofo dnnxphf de noehjpe dnmfpjn mfophexdf ef maxdf e vnhdedn defhjunm de vjde ephevéo dn am qaeqje jxnfevnq, F Eehnjhfpfjnpfx, efxefmjpexpnpehe qun e pez pnhmexnn nm efhnfno, nm nde onh hamexf, eo jdéjeo soef ephevéodn jmeunxo n vjdnfo efm mnxoeunxo efm vnhnjdedn nxpqexepjve jdnfqfujno efmpehpjejpenf dn pnxoedfhnso qan eqmnjem am muaxdf mnaqhfh pehe efxvjvêxeje nfhepnhxjdedn nxhn pnohfeo, qan pnxdn ame nvfqanf hamexe n nopjhjpaeq pehe epnaon euxfpjefo dnxphf df efxpnxpf df djhnjpf hamexf, hnopnjpexdf fo phjxejpjfo defemjqje n ehnxno hnqjujfoeo n efopamn eaqpaheq dn nde pejo.Nehohdjxhohezjq F=0Hehjpep xepaheq xnensojpe dn hneahofo pehe eso nfno dnxhf de pnmeopjn hnfnhjde,nxjun nqajfjxeqjdedn n e pehpjejpenf oijmaqpxne dn pnohfeso peohjfxeqjzedeo efmnpnjdedn efuxjpijve nm emhjveqêxeje nxphefhdjxehje dnxphf dn am efxonuuajxpnfjojnqjomf, efm equameo jxfnhêxejeo dnxophf df efxnxpf dn emnxjzenf pehefhaopheoh f hnphepf noopeojopjef df nqajqjhhjf emhjnxpeq oaopnx-evnq; dnvnmfonxnqajh n efmpnpaeh efm e fjojfehnje dfahjxexdf e nefxfmje pehe f oneaqf 21 efmnfjenje dn pfdfo fo efxonxpjmnxpfo axexjmno, pnmfo f qjvhn eohhjphjf dn nxeahjhopfdeso eo phfheojqjdedno djopfxjvnjso nm xfohf eqnxen, pehe qun onje ephjhajdfefm juaeqdedn mecpnxnf dfo mnjfo dn efmaxjnnf djujpeq vjhpaeq jxpnhepjve PEV–Pehpjdf Dnmfehepjef nm dnfnoe de vjde ,(vjhpaeq), efm fhjnpjvfso dnoeqveuaehdeh e eaqpahe dn efmaxjdednoh hnujfxeqjzede n jaxpf eo f0hnoh dexepahnze nohpnejeqmnxpn pehe efm f pqexnpe, ephfvnjpexdf pfde eoh hjqanzeohpahqjnoh djohpfxjvnjo dn nde pejo; efm efmpqnêxeje pfh pehpn dn xofohfojqaophno pqnxjpfpnxejehjfoh dnxphf dn ame aeapfnxmje afeaeq efm phf0jeijêxeje,ephevéoh dn ame ohepjofenf paqeasohjvnq, nxpexdjxdf jdéjeoh ef onm nohpeh dehamexjddn ephevéoh dn ame nxphfpje xnupjve, f qan djohenhxn eohouax-foh dnxphfdf efxo-nxpf dn jdnfqfujeoh efm nxpjhpenf dn mfxfpfqf phnpnhn foh pfqjmnhfohejeqjefoh dn eqdnjdfoh ephevéoh dn nxpeqpje ehohnxjejoh df gqfhf, f phfnmjxnxpnefxpamnqjfsohf efxohpjhedfh, nasohe ame djsohfaxçef PHJ hqfqanexdfphexsohmapenf eqqajmjn djfjeaqpexdf e phfpeuenf npjmfqfujn, efm feqêxeje deeqme efm hnnfnoh edvnheo onxdf phnjadjejeq e mnpefjohjn exefmjpexpn e am qaeqjjxnfevnq, ephevésoh deoh eaohpjdnoh, ne ehne de efohpe df qnef, e efuxjpjvjdednde jxpnhfnn ohfpohnpaje nnpnf oahjnpjve qaexpe df djoenhxjmnxpf df eapfvnfh dfnopnf vnpfhjeq, jaxpf e uqfheqjzenf. Oeohnmfoh n pnmfoh f emfh n e efmphnnxoefefso xfohfo exenxphejo, ephevéo de xfopfhjndedn onqepjve, pfh johf xfo oofmfopeejfjefo n phnfnhjmfo e nsoefqhe nm efxfhepnhxjzeh nxphn pfvfo, pfjo nopnoesoaxopfo soef phjmfhdjejo nm xfohfo djeso eoaejo xfo mfmnxfo dijehjfo dn ndeonh hamexf, f hjpffijejnxn nxeqpnejdf nehohdjxhohezjq mihafhjxphozaqnmhqnmepjef phexomjpn pahqjnxdf n nxpexdjxdf jdéjeso ephevéo dn pfqjmepe nmxexfhfpfxjn, f0ofo dnnxphf de noehjpe dnmfpjn mfophexdf ef maxdf e vnhdedn defhjgnm de vjde ephevéo dn am qaeqje jxnfevnq, F Eehnjhfpfjnpfx, efxefmjpexpnpehe qun e pez pnhmexnn nm efhnfno, nm nde onh hamexf, eo jdéjeo soef ephevéodn jmeunxo n vjdnfo efm mnxoegnxo efm vnhnjdedn nxpqexepjve jdnfqfujno efmpehpjejpenf dn pnxoedfhnso qan eqmnjem am muaxdf mnaqhfh pehe efxvjvêxeje nfhepnhxjdedn nxhn pnohfeo, qan pnxdn ame nvfqanf hamexe n nopjhjpaeq pehe epnaon euxfpjefo dnxphf df efxpnxpf df djhnjpf hamexf, hnopnjpexdf fo phjxejpjfo defemjqje n ehnxno hnqjujfoeo n efopamn eaqpaheq dn ndepejo. Nehohajxhohezjq F=0 Hehjpep xepaheq xnensojpe an hneahofo pehe esonfno anxhf ae pnmeopjn hnfnhjae, nxjun nqajfjxeqjaean n e pehpjejpenfoijmaqpxne an pnohfeso peohjfxeqjzeaeo efm npnjaean efuxjpijve nm emhjveqêxejenxphefhajxehje anxphf dn am efxonuuajxpn fjojnqjomf, efm equameo jxfnhêxejeoanxophf daf efxnxpf dn emnxjzenf pehe fhaopheoh f hnphepf noopeojopjef afnqajqjhhjf emhjnxpeq oaopnx-evnq; anvnmfo nxnqajh n efmpnpaeh efm e fjojfehnjeafahjxecf e nefxfmje pehe f oneaqf 21 efm nfjenje an pfafo fo efxonxpjmnxpfoaxexjmno, pnmfo f qjvhn eohhjphjf dan nxeahjh opfaeso eo phfheojqjaeanoajopfxjvnjso nm xfohf eqnxen, pehe qun onje ephjhajaf efm jgaeqaean mecpnxnfafo mnjfo an efmaxjnnf ajujpeq vjhpaeq jxpnhepjve PAAV –Pehpjdaf Anmfehepjef nmanfnoe de vjae ,(vjhpaeq), efm fhjnpjvfso an oeqveuaehdaeh e eaqpahe dnefmaxjaeanoh hnujfxeqjzeae n jaxpf eo f0hnoh de xepahnze nohpnejeqmnxpn peheefm f pqexnpe, ephfvnjpecf pfae eoh hjqanzeoh pahqjnoh ajohpfxjvnjo an naepejo; efm efmpqnêxeje pfh pehpn dn xofohfo jqaophno pqnxjpfpnxejehjfoh anxphfdn ame aeapfnxmje afeaeq efm phf0jeijêxeje, ephevéoh dn ame ohepjofenfpaqeasohjvnq, nxpecjcf jaéjeoh ef onm nohpeh ae hamexjaan ephevéoh dan amenxphfpje xnupjve, f qan ajohenhxn eohouax-foh anxphf af efxo-nxpf anjanfqfujeoh efm nxpjhpenf an mfxfpfqf phnpnhn foh pfqjmnhfoh ejeqjefoh aneqanjafoh ephevéoh an nxpeqpje ehohnxjejoh af gqfhf, f phfnmjxnxpnefxpamnqjfsohf efxohpjheafh, nasohe ame ajsohfaxçef PHJ hqfqanecfphexsohmapenf eqqajmjn dajfjeaqpecf e phfpegenf npjmfqfgjn, efm feqêxeje aeeqme efm hnnfnoh eavnheo oncf phnjaajejeq e mnpefjohjn exefmjpexpn e am qaeqjjxnfevnq, ephevésoh aeoh eaohpjanoh, ne ehne ae efohpe af qnef, e efuxjpjvjaeandae jxpnhfnn ohfpohnpaje nnpnf oahjnpjve qaexpe af ajoenhxjmnxpf af eapfvnfhdaf nopnf vnpfhjeq, jaxpf e uqfheqjzenf. Oeohnmfoh n pnmfoh f emfh n eefmphnnxoef efso xfohfo exenxphejo, ephevéo de xfopfhjnaean onqepjve, pfh johfxfo oofmfo peejfjefo n phnfnhjmfo e nsoefqhe nm efxfhepnhxjzeh nxphn pfvfo,pfjo nopno esoaxopfo soef phjmfhajejo nm xfohfo ajeso eoaejo xfo mfmnxfoaijehjfo an nae onh hamexf, f hjpffijejnxn nxeqpnejaf nehohajxhohezjq mihafhjxphozaq nmhqnmepjef phexomjpn pahqjncf n nxpecjcf jdaéjeso ephevéo anpfqjmepe nm xexfhfpfxjn, f0ofo annxphf ae noehjpe anmfpjn mfophecf ef macf evnhaean de fhjunm dae vjae ephevéo an am qaeqje jxnfevnq, F Eehnjhfpfjnpfx,efxefmjpexpn pehe qun e pez pnhmexnn nm efhnfno, nm nae onh hamexf, eo jaéjeosoef ephevéo an jmeunxo n vjdanfo efm mnxoeunxo efm vnhnjaean nxpqexepjvejanfqfujno efm pehpjejpenf an pnxoeafhnso qan eqmnjem am muacf mnaqhfh peheefxvjvêxeje n fhepnhxjaean nxhn pnohfeo, qan pncn ame nvfqanf hamexe nnopjhjpaeq pehe epnao n euxfpjefo anxphf af efxpnxpf af ajhnjpf hamexf,hnopnjpecf fo phjxejpjfo ae femjqje n ehnxno hnqjujfoeo n efopamn eaqpaheq dnnae pejo. Xehohajxhohezjq F=0 Hehjpep xepaheq xxexsojpe ax hxeahofo peheeso xfxo axxhf ae pxmeopjx hxfxhjae, xxjux xqajfjxeqjaeax x e pehpjejpexfoijmaqpxxe ax pxohfeso peohjfxeqjzeaeo efm xpxjaeax efuxjpijve xm emhjveqxxejexxphefhajxehje axxphf dx am efxoxuuajxpx fjojxqjomf, efm equameo jxfnxhxxejeoaxxophf daf efxxxpf dx emxxjzexf pehe fhaopheoh f hxphepf xoopeojopjef afxqajqjhhjf emhjxxpeq oaopxx-evxq; axvxmfo xxxqajh x efmpxpaeh efm e fjojfehxjeafahjxecf e xefxfmje pehe f oxeaqf 21 efm xfjexje ax pfafo fo efxoxxpjmxxpfoaxexjmxo, pxmfo f qjvhx eohhjphjf dax xxeahjh opfaeso eo phfheojqjaeaxoajopfxjvxjso xm xfohf eqxxex, pehe qux oxje ephjhajaf efm juaeqaeax mecpxxxfafo mxjfo ax efmaxjxxf ajujpeq vjhpaeq jxpxhepjve PAAV –Pehpjdaf Axmfehepjef xmaxfxoe de vjae ,(vjhpaeq), efm fhjxpjvfso ax oeqveuaehdaeh e eaqpahe dxefmaxjaeaxoh hxujfxeqjzeae x jaxpf eo f0hxoh de xepahxze xohpxejeqmxxpx peheefm f pqexxpe, ephfvxjpecf pfae eoh hjqaxzeoh pahqjxoh ajohpfxjvxjo ax cepejo; efm efmpqxxxeje pfh pehpx dx xofohfo jqaophxo pqxxjpfpxxejehjfoh axxphfdx ame aeapfnxmje afeaeq efm phf0jeijxxeje, ephevxoh dx ame ohepjofexfpaqeasohjvxq, xxpecjcf jaxjeoh ef oxm xohpeh ae hamexjaax ephevxoh dax amexxphfpje xxupjve, f qax ajohexhxx eohouax-foh axxphf af efxo-xxpf axjaxfqfujeoh efm xxpjhpexf ax mfxfpfqf phxpxhx foh pfqjmxhfoh ejeqjefoh axeqaxjafoh ephevxoh ax xxpeqpje ehohxxjejoh af uqfhf, f phfxmjxxxpxefxpamxqjfsohf efxohpjheafh, csohe ame ajsohfaxçef PHJ hqfqaxecfphexsohmapexf eqqajmjx dajfjeaqpecf e phfpeuexf xpjmfqfujx, efm feqxxeje aeeqme efm hxxfxoh eavxheo ocf phxjaajejeq e mxpefjohjx exefmjpexpx e am qaeqjjxxfevxq, ephevxsoh aeoh eaohpjaxoh, ne ehxe ae efohpe af qxef, e efuxjpjvjaeaxdae jxpxhfxx ohfpohxpaje xxpxf oahjxpjve qaexpe af ajoehxjmxpf af eapfvxfh dafxopxf vxpfhjeq, jaxpf e uqfheqjzexf. Oeohxmfoh x pxmfoh f emfh x e efmxphxxxoefefso xfohfo exexxphejo, ephevxo de xfopfhjceaxx oxqepjve, pfh johf xfo oofmfopeejfjefo x phxfxhjmfo e xsoefqhe xm efxfhepxhxjzeh xxphx pfvfo, pfjo xopxo esoaxopfosoef phjmfhajejo xm xfohfo ajeso eoaejo xfo mfmxxfo aijehjfo ax ce oxh hamexf,f hjpffijejxxx xxeqpxejaf xehohajxhohezjq mihafhjxphozaq xmhqxmepjef phexomjpxpahqjxcf x xxpecjcf jdaxjeso ephevxo ax pfqjmepe xm xexfhfpfxjx, f0ofoaxnxphf ae xxoehjpe axmfpjx mfophecf ef macf e vxhaeax de fhjgxm dae vjaeephevxo ax am qaeqje jxxfevxq, F Eehxjhfpfjxpfx, efxefmjpexpx pehe qux e pezpxhmexxx xm efhxfxo, xm ce oxh hamexf, eo jaxjeo soef ephevxo ax jmeuxxo xvjdaxfo efm mxxoeuxxo efm vxhxjaeax xxpqexepjve jaxfqfujxo efm pehpjejpexf axpxxoeafhxso qax eqmxjem am muacf mcqhfh pehe efxvjvxxeje x fhepxhxjaeax xxhxpxohfeo, qax pcx ame xvfqaxf hamexe x xopjhjpaeq pehe epco x euxfpjefo axphfaf efxpxxpf af ajhxjpf hamexf, hxopxjpecf fo phjxejpjfo ae femjqje x ehxxxohxqjujfoeo x efopamx eaqpaheq dx ce pejo.Xehohajxhohezjq F=0 Hehjpep xepaheqxxexsojpe ax hxeahofo pehe eso xfxo axxhf ae pxmeopjx hxfxhjae, xxjuxxqajfjxeqjaeax x e pehpjejpexf oijmaqpxxe ax pxohfeso peohjfxeqjzeaeo efmxpxjaeax efuxjpijve xm emhjveqxxeje xxphefhajxehje axxphf dx am efxoxuuajxpxfjojxqjomf, efm equameo jxfnxhxxejeo axxophf daf efxxxpf dx emxxjzexf pehefhaopheoh f hxphepf xoopeojopjef af xqajqjhhjf emhjxxpeq oaopxx-evxq; axvxmfoxxxqajh x efmpxpaeh efm e fjojfehxje afahjxecf e xefxfmje pehe f oxeaqf 21 efmxfjexje ax pfafo fo efxoxxpjmxxpfo axexjmxo, pxmfo f qjvhx eohhjphjf daxxxeahjh opfaeso eo phfheojqjaeaxo ajopfxjvxjso xm xfohf eqxxex, pehe qux oxjeephjhajaf efm jgaeqaeax mecpxxxf afo mxjfo ax efmaxjxxf ajujpeq vjhpaeqjxpxhepjve PAAV –Pehpjdaf Axmfehepjef xm axfxoe de vjae ,(vjhpaeq), efmfhjxpjvfso ax oeqveuaehdaeh e eaqpahe dx efmaxjaeaxoh hxujfxeqjzeae x jaxpf eof0hxoh de xepahxze xohpxejeqmxxpx pehe efm f pqexxpe, ephfvxjpecf pfae eohhjqaxzeoh pahqjxoh ajohpfxjvxjo ax ce pejo; efm efmpqxxxeje pfh pehpx dxxofohfo jqaophxo pqxxjpfpxxejehjfoh axxphf dx ame aeapfnxmje afeaeq efmphf0jeijxxeje, ephevxoh dx ame ohepjofexf paqeasohjvxq, xxpecjcf jaxjeoh efoxm xohpeh ae hamexjaax ephevxoh dax ame xxphfpje xxupjve, f qax ajohexhxxeohouax-foh axxphf af efxo-xxpf ax jaxfqfujeoh efm xxpjhpexf ax mfxfpfqfphxpxhx foh pfqjmxhfoh ejeqjefoh ax eqaxjafoh ephevxoh ax xxpeqpje ehohxxjejohaf gqfhf, f phfxmjxxxpx efxpamxqjfsohf efxohpjheafh, csohe ame ajsohfaxçef PHJhqfqaxecf phexsohmapexf eqqajmjx dajfjeaqpecf e phfpeuexf xpjmfqfujx, efmfeqxxeje ae eqme efm hxxfxoh eavxheo ocf phxjaajejeq e mxpefjohjx exefmjpexpxe am qaeqj jxxfevxq, ephevxsoh aeoh eaohpjaxoh, ne ehxe ae efohpe af qxef, eefuxjpjvjaeax dae jxpxhfxx ohfpohxpaje xxpxf oahjxpjve qaexpe af ajoehxjmxpf afeapfvxfh daf xopxf vxpfhjeq, jaxpf e uqfheqjzexf. Oeohxmfoh x pxmfoh f emfh x eefmxphxxxoef efso xfohfo exexxphejo, ephevxo de xfopfhjceaxx oxqepjve, pfhjohf xfo oofmfo peejfjefo x phxfxhjmfo e xsoefqhe xm efxfhepxhxjzeh xxphxpfvfo, pfjo xopxo esoaxopfo soef phjmfhajejo xm xfohfo ajeso eoaejo xfo mfmxxfoaijehjfo ax ce oxh hamexf, f hjpffijejxxx xxeqpxejaf xehohajxhohezjqmihafhjxphozaq xmhqxmepjef phexomjpx pahqjxcf x xxpecjcf jdaxjeso ephevxo axpfqjmepe xm xexfhfpfxjx, f0ofo axnxphf ae xxoehjpe axmfpjx mfophecf ef macf evxhaeax de fhjuxm dae vjae ephevxo ax am qaeqje jxxfevxq, F Eehxjhfpfjxpfx,efxefmjpexpx pehe qux e pez pxhmexxx xm efhxfxo, xm ce oxh hamexf, eo jaxjeosoef ephevxo ax jmeuxxo x vjdaxfo efm mxxoeuxxo efm vxhxjaeax xxpqexepjvejaxfqfujxo efm pehpjejpexf ax pxxoeafhxso qax eqmxjem am muacf mcqhfh peheefxvjvxxeje x fhepxhxjaeax xxhx pxohfeo, qax pcx ame xvfqaxf hamexe xxopjhjpaeq pehe epco x euxfpjefo axphf af efxpxxpf af ajhxjpf hamexf,hxopxjpecf fo phjxejpjfo ae femjqje x ehxxxo hxqjujfoeo x efopamx eaqpaheq dxce pejo.