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2Â¥2015-03-19 11:14:13
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3Â¥2015-03-19 14:37:55
lsloneil
ר¼Ò¹ËÎÊ (ÕýʽдÊÖ)
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4Â¥2015-03-20 07:49:25
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ÔÙ¶àÅÜÒ»¶Îʱ¼ä¹À¼ÆÎÒµÄʱ¼ä¾ÍÌ«½ôÕÅÁË£¬ÎÒÕâ¸öÌåϵһ¸öPMFÏÂÀ´ÉÙ˵Ҫһ¸ö¶àÐÇÆÚ¡£ÎÒ»¹ÏëÇë½ÌÒ»¸öÎÊÌ⣬¾ÍÊÇÎÒÔÚNAMD¹ÙÍøµÄºÜ¶à×ÔÓÉÄ̳ܽÌÀïÃæ¿´µ½Ëµ£ºÍ¨¹ý¸÷¸ö·Ö´°¿ÚµÄ.countÎļþ»òÕß.gradÎļþÒ²¿ÉÒÔÅжÏPMFÊÇ·ñÊÕÁ²¡£Èç¹ûPMFÊÕÁ²ÁË£¬Ôò¸÷¸ö´°¿ÚµÄcounts should increase uniformly¡£»òÕßÊÇplot the forces stored in the *.grad files for all windows, checking for continuity across the window boundaries¡£µ«ÊÇÎÒ»¹ÊDz»Ì«Ã÷°×ÕâÊÇʲôÒâË¼ÄØ£¿¡°Ôö¼ÓÒ»Ö¡±ºÍ¡°´°¿ÚÁ¬ÐøÐÔ¡±....... |
5Â¥2015-03-23 16:00:16
lsloneil
ר¼Ò¹ËÎÊ (ÕýʽдÊÖ)
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- ÔÚÏß: 598.4Сʱ
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ÎÒûÓùýNAMD£¬Ò²Ã»ÓùýAdaptive Biasing Force (ABF)¼ÆËã¹ýPMF£¬ÒÔϽöΪÎÒ¸öÈ˵ĽâÊÍ,¿ÉÄܲ»Ì«ÑϽ÷¡£ ¸ù¾ÝÎÒµÄÀí½â£¬ABF¸úmetadynamicsÓÐЩÀàËÆ£¬Ò²ÊÇÒ»ÖÖÔöÇ¿³éÑù(enhanced sampling£©µÄ·½·¨¡£ÆäʵÏÖ·½·¨ÊÇÔÚÄ£Äâ¹ý³ÌÖÐÊ©¼Óbiasing force£¬Öð½¥°ÑÁ£×Ó´ÓÊÆÄÜÃæÉϵĿÓÖÐÀ³öÀ´¡£µ±ÊÆÄÜÃæÉϵĿӱ»ÌîÆ½ºó£¬Á£×ÓÏ൱ÓÚÔÚÒ»¸öÑØ·´Ó¦×ø±ê×ÔÓÉÄÜ´¦´¦ÏàµÈµÄÊÆÄÜÃæÉÏÔ˶¯£¬Õâʱ²ÉÑù¿ÉÒÔÈÏΪÊÕÁ²ÁË£¬¾Í¿ÉÒÔ¸ù¾Ýbiasing forceÇó³öPMF¡£ ÎÒÏëÄã¹ØÓÚÊÕÁ²µÄÅоݿÉÄÜÊÇÀ´×ÔÕâ¸öÎĵµ£º http://www.ks.uiuc.edu/Training/ ... nel/channel-tut.pdf ÀïÃæÌáµ½ÈýÖÖÅжÏÊÕÁ²µÄ·½·¨ 1. One way to assess convergence is to plot sequential PMFs and observe any changes as the simulation progresses Õâ¾ÍÊÇÎÒ֮ǰ»ØÌûÌáµ½µÄÅоݣ¬¶àÅÜÒ»¶Îʱ¼ä£¬¹Û²ìPMFµÄ±ä»¯¡£ 2. You can also plot the counts, which measure the number of times each bin has been sampled. ÕâÌõÒ²²»ÄÑÀí½â£¬µ±²ÉÑùÊÕÁ²ºó£¬Á£×ÓÔÚÒ»¸ö×ÔÓÉÄÜ´¦´¦ÏàµÈµÄÊÆÄÜÃæÉÏÔ˶¯£¬ÄÇôÔÚ·´Ó¦×ø±êΪÈκÎÖµ´¦³öÏֵĸÅÂÊÊǾùµÈµÄ£¬ËùÒÔ¼ÙÈçÄã°ÑÌåϵ´¦ÓÚ¸÷¸ö·´Ó¦×ø±ê(each bin along the reaction coordinate£©µÄƵÂÊ»³öÀ´µÄ»°£¬µÃµ½µÄÊÇÒ»¸ö¾ùÔȵķֲ¼¡£ 3. As another way to judge convergence, you can plot the forces stored in the *.grad files for all windows, checking for continuity across the window boundaries. ÕâÒ²²»ÊÇÌ«ÄÑÀí½â¡£ÎªÁË·½±ã²ÉÑùÎÒÃǰÑÕû¸ö·´Ó¦×ø±ê»®·Ö³ÉÁ˼¸¸ö´°¿Ú¡£ÒòΪPMFÊÇÁ¬Ðøº¯Êý£¬Ëù¶ÔÓ¦µÄÁ¦£¨PMFµÄµ¼Êý)Ó¦¸ÃÒ²ÊÇÁ¬Ðøº¯Êý£¬ÄÇôµ±²ÉÑùÊÕÁ²ºó£¬Õâ¸öÁ¦ÔÚÿÏàÁÚÁ½¸ö´°¿ÚµÄ½»½ç´¦Ó¦¸ÃÊÇÁ¬ÐøµÄ¡£ ¸Ð¾õÄã¶ÔÕâÖÖ·½·¨µÄÔÀí»¹ÊDz»Ì«Á˽⡣½¨ÒéÄãÓÐʱ¼äµÄ»°£¬ÔĶÁÒ»ÏÂÏà¹ØµÄÎÄÏ×£¬ÉîÈëÁ˽âÒ»ÏÂABFµÄÔÀí¡£ |
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6Â¥2015-03-24 09:12:39
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- ºì»¨: 11
- Ìû×Ó: 367
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- ³æºÅ: 1742809
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7Â¥2015-03-24 10:48:43
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- Ìû×Ó: 449
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- ³æºÅ: 2973556
- ×¢²á: 2014-02-17
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8Â¥2015-05-07 14:25:39
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