樹木の年輪は、一年に1本ずつ増えていく丸いしわである。樹木は春から夏に太陽を一杯浴びて成長し、形成層に薄い膜を持つ細胞がたくさんできる。逆に、冬には太陽が少なく、成長が止まってしまうので、厚い膜を持つ細胞ができる。また、細胞の成長は雨の多さや気温の変化など、その年の気候によっても大きく左右される。
太陽にある黒点の動きと地球の気候変動が関係していることに着目した年輪年代学に応用されている。
気候や環境によって変化する年輪のパターンを調べることで、過去の気候変動について科学的に解明することができる。年輪から過去の気候変動パターンを解明することで、未来の気候変動の予測や、干ばつや水害などの予測に応用できる。
| Query | Error | Affected | Num. rows | Took (ms) | Actions |
|---|---|---|---|---|---|
| SHOW FULL COLUMNS FROM `contents` | 16 | 16 | 2 | maybe slow | |
| SELECT CHARACTER_SET_NAME FROM INFORMATION_SCHEMA.COLLATIONS WHERE COLLATION_NAME= 'utf8_general_ci'; | 1 | 1 | 1 | ||
| SHOW FULL COLUMNS FROM `users` | 10 | 10 | 9 | maybe slow | |
| SHOW FULL COLUMNS FROM `groups` | 4 | 4 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `permissions` | 5 | 5 | 9 | maybe slow | |
| SHOW FULL COLUMNS FROM `groups_permissions` | 3 | 3 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `groups_users` | 3 | 3 | 9 | maybe slow | |
| SHOW FULL COLUMNS FROM `contents_searches` | 6 | 6 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `attachments` | 11 | 11 | 9 | maybe slow | |
| SHOW FULL COLUMNS FROM `attachments_revs` | 13 | 13 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `contents_related_items` | 5 | 5 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `related_items` | 6 | 6 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `contents_related_items_revs` | 8 | 8 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `contents_tags` | 5 | 5 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `tags` | 7 | 7 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `tag_groups` | 6 | 6 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `contents_tags_revs` | 7 | 7 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `contents_revs` | 18 | 18 | 1 | maybe slow | |
| SELECT `Content`.`id`, `Content`.`user_id`, `Content`.`last_edit_user_id`, `Content`.`post_date`, `Content`.`post_date_year`, `Content`.`post_date_month`, `Content`.`post_date_day`, `Content`.`title`, `Content`.`title_en`, `Content`.`content`, `Content`.`plain_content`, `Content`.`page_view`, `Content`.`flag`, `Content`.`mod_count`, `Content`.`created`, `Content`.`modified` FROM `contents` AS `Content` WHERE `id` = 31 LIMIT 1 | 1 | 1 | 0 | ||
| SELECT `Attachment`.`file_name`, `Attachment`.`dir`, `Attachment`.`model`, `Attachment`.`foreign_key` FROM `attachments` AS `Attachment` WHERE `file_name` <> 'default.jpg' AND `Attachment`.`foreign_key` = (31) | 2 | 2 | 0 | ||
| SELECT `ContentsRelatedItem`.`content`, `ContentsRelatedItem`.`related_item_id`, `ContentsRelatedItem`.`content_id` FROM `contents_related_items` AS `ContentsRelatedItem` WHERE `ContentsRelatedItem`.`content_id` = (31) | 11 | 11 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 1 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 2 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 5 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 6 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 7 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 8 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 9 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 9 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 9 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 4 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`code`, `RelatedItem`.`name` FROM `related_items` AS `RelatedItem` WHERE `RelatedItem`.`id` = 11 | 1 | 1 | 0 | ||
| SELECT `ContentsTag`.`id`, `ContentsTag`.`tag_group_id`, `ContentsTag`.`mod_count`, `ContentsTag`.`tag_id`, `ContentsTag`.`content_id` FROM `contents_tags` AS `ContentsTag` WHERE `ContentsTag`.`content_id` = (31) | 2 | 2 | 0 | ||
| SELECT `Tag`.`name`, `Tag`.`comment`, `Tag`.`tag_group_id` FROM `tags` AS `Tag` WHERE `Tag`.`id` = 8 | 1 | 1 | 0 | ||
| SELECT `TagGroup`.`code`, `TagGroup`.`name` FROM `tag_groups` AS `TagGroup` WHERE `TagGroup`.`id` = 1 | 1 | 1 | 0 | ||
| SELECT `Tag`.`name`, `Tag`.`comment`, `Tag`.`tag_group_id` FROM `tags` AS `Tag` WHERE `Tag`.`id` = 175 | 1 | 1 | 8 | maybe slow | |
| SELECT `TagGroup`.`code`, `TagGroup`.`name` FROM `tag_groups` AS `TagGroup` WHERE `TagGroup`.`id` = 7 | 1 | 1 | 0 | ||
| SELECT `RelatedItem`.`id`, `RelatedItem`.`code`, `RelatedItem`.`name`, `RelatedItem`.`created`, `RelatedItem`.`modified`, `RelatedItem`.`flag` FROM `related_items` AS `RelatedItem` WHERE `code` = 'function' LIMIT 1 | 1 | 1 | 0 | ||
| SELECT `Content`.`id`, `Content`.`title`, `Content`.`title_en` FROM `contents` AS `Content` WHERE id = (NULL) ORDER BY `id` desc | 0 | 0 | 0 |
Peak Memory Use 8.79 MB
| Message | Memory use |
|---|---|
| Component intitailization | 6.79 MB |
| Controller action start | 6.83 MB |
| Controller render start | 6.90 MB |
| View render complete | 7.93 MB |
Total Request Time: 708 (ms)
| Message | Time in ms | Graph |
|---|---|---|
| Core Processing (Derived) | 315.92 | |
| Component initialization and startup | 19.34 | |
| Controller action | 38.23 | |
| Render Controller Action | 56.26 | |
| » Rendering View | 52.76 | |
| » » Rendering APP/views/contents/view.ctp | 32.94 | |
| » » Rendering APP/views/layouts/default.ctp | 18.12 | |
| » » » Rendering APP/views/elements/header.ctp | 1.46 | |
| » » » Rendering APP/views/elements/content_sidebar.ctp | 0.52 | |
| » » » Rendering APP/views/elements/footer.ctp | 0.40 |
