This site requires Javascript to be turned on. Please enable Javascript and reload the page. Scalar's 'additional metadata' features have been disabled on this install. Learn more. Research paper Main Menu Home 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 43 44 45 46 47 lisha xu 2eb0f1640aa5278c047844bc6473742f288fec59 42 1 2017-07-19T16:06:16-07:00 lisha xu 2eb0f1640aa5278c047844bc6473742f288fec59 20518 1 plain 2017-07-19T16:06:16-07:00 lisha xu 2eb0f1640aa5278c047844bc6473742f288fec59