<?
/**
* Note: This file may contain artifacts of previous malicious infection.
* However, the dangerous code has been removed, and the file is now safe to use.
*/



guten_learn_Customizer::add_custom_control( array(
    'type'     => 'guten-learn-radio-image',
    'class'    => 'Guten_Learn_Customize_Control_Radio_Image',
    'sanitize' => array( 'Guten_Learn_Customizer', 'sanitize_number' ),
));
{"id":489,"date":"2023-10-02T21:34:17","date_gmt":"2023-10-02T18:34:17","guid":{"rendered":"https:\/\/aspida.ee.duth.gr\/?p=489"},"modified":"2023-10-11T21:38:09","modified_gmt":"2023-10-11T18:38:09","slug":"hidden-markov-models-for-presence-detection-based-on-co2-fluctuations","status":"publish","type":"post","link":"https:\/\/aspida.ee.duth.gr\/en\/hidden-markov-models-for-presence-detection-based-on-co2-fluctuations\/","title":{"rendered":"Hidden Markov models for presence detection based on CO2 fluctuations"},"content":{"rendered":"<div class=\"post-content\">\n<section id=\"rise-blocks-heading-block-instance-0-c3556cd-3f4-fcbe-3e80-af41bc6db0d\"><div class=\"rise-blocks-heading-section wp-block-rise-blocks-heading left\"><h2 class=\"rise-blocks-title\"><strong><a href=\"https:\/\/www.frontiersin.org\/articles\/10.3389\/frobt.2023.1280745\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u2924<\/a><\/strong> Hidden Markov models for presence detection based on CO<sub>2<\/sub> fluctuations<\/h2><span class=\"rise-blocks-line\"><\/span><div class=\"rise-blocks-sub-description\">Presence sensing systems are gaining importance and are utilized in various contexts such as smart homes, Ambient Assisted Living (AAL) and surveillance technology. Typically, these systems utilize motion sensors or cameras that have a limited field of view, leading to potential monitoring gaps within a room. However, humans release carbon dioxide (CO<sub>2<\/sub>) through respiration which spreads within an enclosed space. Consequently, an observable rise in CO<sub>2<\/sub> concentration is noted when one or more individuals are present in a room. This study examines an approach to detect the presence or absence of individuals indoors by analyzing the ambient air&#8217;s CO<sub>2<\/sub> concentration using simple Markov Chain Models. The proposed scheme achieved an accuracy of up to 97% in both experimental and real data demonstrating its efficacy in practical scenarios.<\/div><\/div><\/section>\n\n\n\n<p> <\/p>\n\n\n\n<section id=\"rise-blocks-heading-block-instance-1-6034fac-7157-4b63-5d0d-611b00e1d2e4\"><div class=\"rise-blocks-heading-section wp-block-rise-blocks-heading left\"><span class=\"rise-blocks-sub-title\"><strong>Authors<\/strong><\/span><div class=\"rise-blocks-sub-description\">Christos Karasoulas, Christoforos Keroglou, Eleftheria Katsiri, Georgios Ch. Sirakoulis<br><a rel=\"noreferrer noopener\" href=\"https:\/\/orcid.org\/0000-0003-0898-6102\" target=\"_blank\"><\/a><\/div><\/div><\/section>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<section id=\"rise-blocks-heading-block-instance-2-a8cafb-78e2-b656-2efe-c37c2c7df52b\"><div class=\"rise-blocks-heading-section wp-block-rise-blocks-heading left\"><span class=\"rise-blocks-sub-title\"><strong><strong>Journal<\/strong><\/strong><\/span><div class=\"rise-blocks-sub-description\">Frontiers in Robotics and AI, Robot Vision and Artificial Perception<\/div><\/div><\/section>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<section id=\"rise-blocks-heading-block-instance-3-e1c262-5613-8060-42d0-846d7b3dfbd\"><div class=\"rise-blocks-heading-section wp-block-rise-blocks-heading left\"><span class=\"rise-blocks-sub-title\"><strong><strong><strong>Publication Date<\/strong><\/strong><\/strong><\/span><div class=\"rise-blocks-sub-description\">October 2nd, 2023<\/div><\/div><\/section>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":17,"featured_media":93,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-489","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publications"],"rise-blocks_total_comments":0,"rise-blocks_categories":[{"term_id":5,"name":"Publications","slug":"publications","term_group":0,"term_taxonomy_id":5,"taxonomy":"category","description":"","parent":0,"count":63,"filter":"raw","cat_ID":5,"category_count":63,"category_description":"","cat_name":"Publications","category_nicename":"publications","category_parent":0}],"rise-blocks_excerpt":"","_links":{"self":[{"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/posts\/489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/comments?post=489"}],"version-history":[{"count":1,"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/posts\/489\/revisions"}],"predecessor-version":[{"id":491,"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/posts\/489\/revisions\/491"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/media\/93"}],"wp:attachment":[{"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/media?parent=489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/categories?post=489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aspida.ee.duth.gr\/en\/wp-json\/wp\/v2\/tags?post=489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}