水族館やテレビの映像などで魚の群れがぶつからずにいっせいに方向を変えるのを見たことがあるであろう。どうして魚はぶつかり合わずに泳ぐことができるのだろうか。実は、体の両横中央に頭から尾ビレまで通っている一本の線に秘密がある。この線を側線（側線）というが、魚ではこの側線が触覚と聴覚の働きをもっている。この部分でわずかな水の動きや音を感じとることで周囲の変化をとらえ、となりの魚との距離を知ることが出来るのである。
最先端の通信技術やIT技術を利用して、事故や渋滞を防ぐ高度道路交通システム（ITS）が盛んに研究されている。微妙な水圧の変化をキャッチする魚の側線は、自然界の高性能センサーとして優れているばかりでなく、魚の個体が入力信号を処理するアルゴリズムと魚の群れとしての行動の関係にも興味が持たれる。
右へ左へとお互いの距離を一定に保ったまま群れを形づくって移動する魚に学んで、高性能センサーや集団制御システムを開発することにより、交通事故ゼロの社会も可能になる。
| 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 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `groups` | 4 | 4 | 3 | maybe slow | |
| SHOW FULL COLUMNS FROM `permissions` | 5 | 5 | 15 | maybe slow | |
| SHOW FULL COLUMNS FROM `groups_permissions` | 3 | 3 | 6 | maybe slow | |
| SHOW FULL COLUMNS FROM `groups_users` | 3 | 3 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `contents_searches` | 6 | 6 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `attachments` | 11 | 11 | 1 | maybe slow | |
| SHOW FULL COLUMNS FROM `attachments_revs` | 13 | 13 | 2 | 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 | 14 | 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 | 13 | maybe slow | |
| SHOW FULL COLUMNS FROM `contents_revs` | 18 | 18 | 2 | 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` = 207 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` = (207) | 1 | 1 | 0 | ||
| SELECT `ContentsRelatedItem`.`content`, `ContentsRelatedItem`.`related_item_id`, `ContentsRelatedItem`.`content_id` FROM `contents_related_items` AS `ContentsRelatedItem` WHERE `ContentsRelatedItem`.`content_id` = (207) | 10 | 10 | 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` = 4 | 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 | 8 | maybe slow | |
| 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` = (207) | 4 | 4 | 0 | ||
| SELECT `Tag`.`name`, `Tag`.`comment`, `Tag`.`tag_group_id` FROM `tags` AS `Tag` WHERE `Tag`.`id` = 9 | 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` = 28 | 1 | 1 | 0 | ||
| SELECT `TagGroup`.`code`, `TagGroup`.`name` FROM `tag_groups` AS `TagGroup` WHERE `TagGroup`.`id` = 3 | 1 | 1 | 0 | ||
| SELECT `Tag`.`name`, `Tag`.`comment`, `Tag`.`tag_group_id` FROM `tags` AS `Tag` WHERE `Tag`.`id` = 91 | 1 | 1 | 0 | ||
| SELECT `TagGroup`.`code`, `TagGroup`.`name` FROM `tag_groups` AS `TagGroup` WHERE `TagGroup`.`id` = 7 | 1 | 1 | 0 | ||
| SELECT `Tag`.`name`, `Tag`.`comment`, `Tag`.`tag_group_id` FROM `tags` AS `Tag` WHERE `Tag`.`id` = 93 | 1 | 1 | 0 | ||
| 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 8.28 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: 758 (ms)
| Message | Time in ms | Graph |
|---|---|---|
| Core Processing (Derived) | 366.52 | |
| Component initialization and startup | 7.86 | |
| Controller action | 47.87 | |
| Render Controller Action | 65.04 | |
| » Rendering View | 61.51 | |
| » » Rendering APP/views/contents/view.ctp | 41.93 | |
| » » Rendering APP/views/layouts/default.ctp | 17.87 | |
| » » » Rendering APP/views/elements/header.ctp | 1.47 | |
| » » » Rendering APP/views/elements/content_sidebar.ctp | 0.46 | |
| » » » Rendering APP/views/elements/footer.ctp | 0.41 |
