#FIG 3.2 Landscape Center Inches Letter 100.00 Single -2 1200 2 6 375 6075 10125 8625 6 750 6525 3300 6975 4 0 0 50 0 17 12 0.0000 4 180 2520 750 6675 receive OAI harvesting request\001 4 0 0 50 0 17 12 0.0000 4 180 1680 750 6900 for metadata pattern\001 -6 6 3525 7425 7125 8625 6 3750 7575 6975 8400 4 0 0 50 0 18 12 0.0000 4 135 2985 3750 7725 Poll the other LON-CAPA servers\001 4 0 0 50 0 18 12 0.0000 4 180 3075 3750 7950 for responses to the availability of\001 4 0 0 50 0 18 12 0.0000 4 135 3165 3750 8175 a /res/DOMAIN/... data or metadata\001 4 0 0 50 0 18 12 0.0000 4 105 780 3750 8400 resource\001 -6 2 4 0 1 0 0 50 0 -1 0.000 0 0 12 0 0 5 7125 8625 3525 8625 3525 7425 7125 7425 7125 8625 -6 6 675 7800 3300 8175 4 0 0 50 0 17 12 0.0000 4 180 2520 675 7950 receive OAI harvesting request\001 4 0 0 50 0 17 12 0.0000 4 135 2580 675 8175 for metadata record or resource\001 -6 6 6150 6525 8625 6975 4 0 0 50 0 17 12 0.0000 4 180 2475 6150 6675 respond with OAI query result\001 4 0 0 50 0 17 12 0.0000 4 180 1215 6150 6900 (i.e. record list)\001 -6 6 6000 6900 7875 7050 6 7725 6900 7875 7050 1 2 0 1 0 0 50 0 -1 0.000 1 0.0000 7800 6975 75 75 7725 6900 7875 7050 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 7797 6974 37 37 7760 6937 7835 7012 -6 2 1 0 1 0 0 50 0 20 0.000 0 0 -1 1 0 2 1 1 1.00 90.00 135.00 6000 6975 7725 6975 -6 6 7350 7800 10125 8250 4 0 0 50 0 17 12 0.0000 4 180 2475 7350 7950 respond with OAI query result\001 4 0 0 50 0 17 12 0.0000 4 180 2715 7350 8175 (i.e. metadata record or resource)\001 -6 6 7125 8250 9000 8400 6 8850 8250 9000 8400 1 2 0 1 0 0 50 0 -1 0.000 1 0.0000 8925 8325 75 75 8850 8250 9000 8400 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 8922 8324 37 37 8885 8287 8960 8362 -6 2 1 0 1 0 0 50 0 20 0.000 0 0 -1 1 0 2 1 1 1.00 90.00 135.00 7125 8325 8850 8325 -6 6 3600 6675 6000 7125 4 0 0 50 0 18 12 0.0000 4 135 1500 3600 6825 Search the other\001 4 0 0 50 0 18 12 0.0000 4 180 2370 3600 7050 LON-CAPA library servers\001 -6 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 450 6975 75 75 375 6900 525 7050 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 450 8250 75 75 375 8175 525 8325 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 1 0 2 1 1 1.00 90.00 135.00 450 6975 3525 6975 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 1 0 2 1 1 1.00 90.00 135.00 450 8250 3525 8250 2 4 0 1 0 7 50 0 -1 0.000 0 0 12 0 0 5 6005 7200 3525 7200 3525 6600 6005 6600 6005 7200 4 0 0 50 0 18 12 0.0000 4 180 4320 375 6225 GATEWAY FEATURE: Provide for OAI harvesting\001 -6 6 375 4650 7500 5700 6 675 5025 2850 5400 4 0 0 50 0 17 12 0.0000 4 180 1965 675 5175 receive resource request\001 4 0 0 50 0 17 12 0.0000 4 135 2130 675 5400 from LON-CAPA network\001 -6 6 3375 5175 5400 5550 4 0 0 50 0 18 12 0.0000 4 135 1965 3375 5325 Access internal mirror\001 4 0 0 50 0 18 12 0.0000 4 135 1575 3375 5550 of NSDL archives\001 -6 6 5625 5400 7500 5550 6 7350 5400 7500 5550 1 2 0 1 0 0 50 0 -1 0.000 1 0.0000 7425 5475 75 75 7350 5400 7500 5550 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 7422 5474 37 37 7385 5437 7460 5512 -6 2 1 0 1 0 0 50 0 20 0.000 0 0 -1 1 0 2 1 1 1.00 90.00 135.00 5625 5475 7350 5475 -6 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 450 5475 75 75 375 5400 525 5550 2 1 0 1 0 0 50 0 20 0.000 0 0 -1 1 0 2 1 1 1.00 90.00 135.00 450 5475 3225 5475 2 4 0 1 0 7 50 0 -1 0.000 0 0 12 0 0 5 5625 5700 3225 5700 3225 5100 5625 5100 5625 5700 4 0 0 50 0 18 12 0.0000 4 135 5565 375 4800 GATEWAY FEATURE: Allow for use within educational network\001 4 0 0 50 0 17 12 0.0000 4 180 1245 5775 5400 answer request\001 -6 6 375 750 8625 4125 6 450 1050 2625 1725 4 0 0 50 0 17 12 0.0000 4 180 2085 450 1200 to be potentially replaced\001 4 0 0 50 0 17 12 0.0000 4 180 1875 450 1425 in the future by Cornell\001 4 0 0 50 0 17 12 0.0000 4 180 2145 450 1650 central repository strategy\001 -6 6 3000 1050 8625 3450 6 4800 1125 7050 1500 4 0 0 50 0 18 12 0.0000 4 135 2175 4800 1500 mirror of NSDL archives\001 4 0 0 50 0 18 12 0.0000 4 180 2190 4800 1275 Update gateway internal\001 -6 6 3150 1800 8475 3300 6 5700 1875 7650 2175 2 4 0 1 0 0 50 0 -1 0.000 0 0 7 0 0 5 7650 2175 7650 1875 5700 1875 5700 2175 7650 2175 4 0 0 50 0 18 12 0.0000 4 135 1815 5775 2100 OAI server available\001 -6 6 3300 2250 5625 2550 2 4 0 1 0 0 50 0 -1 0.000 0 0 7 0 0 5 5625 2550 5625 2250 3300 2250 3300 2550 5625 2550 4 0 0 50 0 18 12 0.0000 4 135 2220 3375 2475 Mirror has list of records\001 -6 6 5700 2625 8475 2925 2 4 0 1 0 0 50 0 -1 0.000 0 0 7 0 0 5 8475 2925 8475 2625 5700 2625 5700 2925 8475 2925 4 0 0 50 0 18 12 0.0000 4 135 2610 5775 2850 Mirror has a metadata record\001 -6 6 3675 3000 5700 3300 2 4 0 1 0 0 50 0 -1 0.000 0 0 7 0 0 5 5700 3300 5700 3000 3675 3000 3675 3300 5700 3300 4 0 0 50 0 18 12 0.0000 4 135 1920 3750 3225 Mirror has a resource\001 -6 6 3150 3075 3300 3225 1 2 0 1 0 0 50 0 -1 0.000 1 0.0000 3225 3150 75 75 3150 3075 3300 3225 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 3222 3149 37 37 3185 3112 3260 3187 -6 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 3750 2025 75 75 3675 1950 3825 2100 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 1 0 2 1 1 1.00 90.00 135.00 3750 2025 5700 2025 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 1 0 4 1 1 1.00 90.00 135.00 7650 2025 8475 2025 8475 2475 5625 2475 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 1 0 4 1 1 1.00 90.00 135.00 3300 2475 3225 2475 3225 2850 5700 2850 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 1 0 3 1 1 1.00 90.00 135.00 7200 2925 7200 3225 5700 3225 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 1 0 2 1 1 1.00 90.00 135.00 3675 3150 3300 3150 4 0 0 50 0 17 12 0.0000 4 180 2595 5775 2400 request list of metadata records\001 4 0 0 50 0 17 12 0.0000 4 180 1170 4425 2775 request record\001 4 0 0 50 0 17 12 0.0000 4 180 1350 5775 3150 request resource\001 4 0 0 50 0 17 12 0.0000 4 135 1545 3975 1950 contact OAI server\001 -6 2 4 0 1 0 0 50 0 -1 0.000 0 0 7 0 0 5 8625 3450 8625 1050 3000 1050 3000 3450 8625 3450 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 0 0 2 3000 1650 8625 1650 4 0 0 50 0 17 12 0.0000 4 135 1050 7350 1275 with relevant\001 4 0 0 50 0 17 12 0.0000 4 180 615 7500 1500 looping\001 -6 6 4425 3600 7425 4050 4 0 0 50 0 17 12 0.0000 4 180 2955 4425 3750 notify all subscribing access servers\001 4 0 0 50 0 17 12 0.0000 4 180 870 4425 3975 of updates\001 -6 6 7500 3975 7650 4125 1 2 0 1 0 0 50 0 -1 0.000 1 0.0000 7575 4050 75 75 7500 3975 7650 4125 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 7572 4049 37 37 7535 4012 7610 4087 -6 1 2 0 1 0 0 50 0 20 0.000 1 0.0000 450 2175 75 75 375 2100 525 2250 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 1 0 2 1 1 1.00 90.00 135.00 450 2175 3000 2175 2 1 0 1 0 0 50 0 -1 0.000 0 0 -1 1 0 3 1 1 1.00 90.00 135.00 4350 3450 4350 4050 7500 4050 4 0 0 50 0 18 12 0.0000 4 135 4245 450 900 GATEWAY FEATURE: Web crawl NSDL archives\001 4 0 0 50 0 17 12 0.0000 4 180 2010 675 2025 periodic (daily) updating\001 -6