{"id":6593,"date":"2024-02-26T22:56:41","date_gmt":"2024-02-26T13:56:41","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=6593"},"modified":"2026-10-04T09:26:23","modified_gmt":"2026-10-04T00:26:23","slug":"%ec%8b%a0%eb%a2%b0%eb%8f%84-%ec%a0%95%eb%b9%84%eb%8f%84-%ea%b0%80%ec%9a%a9%eb%8f%84","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/%ec%8b%a0%eb%a2%b0%eb%8f%84-%ec%a0%95%eb%b9%84%eb%8f%84-%ea%b0%80%ec%9a%a9%eb%8f%84\/","title":{"rendered":"\uc2e0\ub8b0\ub3c4, \uc815\ube44\ub3c4, \uac00\uc6a9\ub3c4"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc758 \uc124\uacc4 \uc2dc \uc2dc\uc2a4\ud15c\uc758 \uc2e0\ub8b0\ub3c4(Reliability), \uc815\ube44\ub3c4(Maintainability) \ubc0f \uac00\uc6a9\ub3c4(Availability)\ub97c \uc815\uc758\ud558\uace0 \uc124\uba85\ud558\uc2dc\uc624<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250430_171811_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NeoStudio_20250430_171811_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac15\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-e82e7166-587f-49b4-8d13-02d64af578ff\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250430_171811_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\">NeoStudio_20250430_171811_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac15<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250430_171811_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-e82e7166-587f-49b4-8d13-02d64af578ff\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250428_204851_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NeoStudio_20250428_204851_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac15\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-87debfa2-1d9a-476e-9548-0572b2211873\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250428_204851_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\">NeoStudio_20250428_204851_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac15<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250428_204851_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-87debfa2-1d9a-476e-9548-0572b2211873\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\uc2e0\ub8b0\uc131 \uacf5\ud559 33 pages<\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250429_032734_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NeoStudio_20250429_032734_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac15\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-55a6161d-9eab-4cf5-b2a5-7d15bb55e63b\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250429_032734_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\">NeoStudio_20250429_032734_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac15<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250429_032734_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-55a6161d-9eab-4cf5-b2a5-7d15bb55e63b\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250429_205616_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"NeoStudio_20250429_205616_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac15\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-3f31a353-98ed-496d-9826-c578e4767b04\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250429_205616_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\">NeoStudio_20250429_205616_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4 \uae30\uc220\uc0ac15<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/NeoStudio_20250429_205616_\uc0b0\uc5c5\uacc4\uce21\uc81c\uc5b4-\uae30\uc220\uc0ac15.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-3f31a353-98ed-496d-9826-c578e4767b04\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"936\" height=\"1280\" src=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/image-52.png\" alt=\"\" class=\"wp-image-6606\" srcset=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/image-52.png 936w, https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/image-52-768x1050.png 768w\" sizes=\"auto, (max-width: 936px) 100vw, 936px\" \/><\/figure>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/\uc218\uc0c1\ud568-\uc18c\ub098\uccb4\uacc4\uc758-RAM-\ubd84\uc11d.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"\uc218\uc0c1\ud568 \uc18c\ub098\uccb4\uacc4\uc758 RAM \ubd84\uc11d\uc758 \uc0bd\uc785.\"><\/object><a id=\"wp-block-file--media-ea704a55-8ef2-4b25-a3ce-bbedf77de574\" href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/\uc218\uc0c1\ud568-\uc18c\ub098\uccb4\uacc4\uc758-RAM-\ubd84\uc11d.pdf\">\uc218\uc0c1\ud568 \uc18c\ub098\uccb4\uacc4\uc758 RAM \ubd84\uc11d<\/a><a href=\"https:\/\/now0930.pe.kr\/wordpress\/wp-content\/uploads\/2024\/02\/\uc218\uc0c1\ud568-\uc18c\ub098\uccb4\uacc4\uc758-RAM-\ubd84\uc11d.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-ea704a55-8ef2-4b25-a3ce-bbedf77de574\">\ub2e4\uc6b4\ub85c\ub4dc<\/a><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc758 \uc124\uacc4 \uc2dc \uace0\ub824\ud574\uc57c \ud558\ub294 \uc911\uc694\ud55c \uc694\uc18c\ub4e4\uc778 \uc2e0\ub8b0\ub3c4(Reliability), \uc815\ube44\ub3c4(Maintainability), \uadf8\ub9ac\uace0 \uac00\uc6a9\ub3c4(Availability)\uc5d0 \ub300\ud574 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/m.blog.naver.com\/gss2010\/222612547476\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>\uc2e0\ub8b0\ub3c4(Reliability)<\/strong>: \uc2e0\ub8b0\ub3c4\ub294 \uccb4\uacc4 \ub610\ub294 \ubd80\ud488\uc774 \uc8fc\uc5b4\uc9c4 \uc6b4\uc6a9\uc870\uac74\ud558\uc5d0\uc11c \uc758\ub3c4\ud558\ub294 \uc0ac\uc6a9\uae30\uac04 \uc911\uc5d0 \uc758\ub3c4\ud55c \ubaa9\uc801\uc5d0 \ub9cc\uc871\uc2a4\ub7fd\uac8c \uc791\ub3d9\ud560 \ud655\ub960\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4<\/a><a href=\"https:\/\/m.blog.naver.com\/gss2010\/222612547476\" target=\"_blank\" rel=\"noreferrer noopener\"><sup>1<\/sup><\/a>.<\/li>\n\n\n\n<li><strong>\uc815\ube44\ub3c4(Maintainability)<\/strong>: \uc815\ube44\ub3c4\ub294 \uc2dc\uc2a4\ud15c\uc774 \uace0\uc7a5\ub098\uac70\ub098 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud588\uc744 \ub54c, \uadf8 \ubb38\uc81c\ub97c \uc5bc\ub9c8\ub098 \ube60\ub974\uace0 \ud6a8\uacfc\uc801\uc73c\ub85c \ud574\uacb0\ud560 \uc218 \uc788\ub294\uc9c0\ub97c \ub098\ud0c0\ub0b4\ub294 \ucc99\ub3c4\uc785\ub2c8\ub2e4. \uc774\ub294 \uc2dc\uc2a4\ud15c\uc758 \ubcf5\uc7a1\uc131, \uc0ac\uc6a9\ub41c \ubd80\ud488\uc758 \ud488\uc9c8, \uc2dc\uc2a4\ud15c\uc758 \uc124\uacc4 \ubc0f \uad6c\ud604 \ubc29\ubc95 \ub4f1 \uc5ec\ub7ec \uc694\uc18c\uc5d0 \uc758\ud574 \uacb0\uc815\ub429\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uac00\uc6a9\ub3c4(Availability)<\/strong>: \uac00\uc6a9\ub3c4\ub294 \uccb4\uacc4\uac00 \uc5b4\ub5a4 \uc2dc\uc810\uc5d0\uc11c \ub9cc\uc871\uc2a4\ub7fd\uac8c \uc791\ub3d9\ud560 \uc218 \uc788\ub294 \ud655\ub960\ub85c\uc11c, \uc2e0\ub8b0\ub3c4\uc640 \ubcf4\uc804\ub3c4\uc758 \ud569\uc73c\ub85c \uc815\uc758\ub429\ub2c8\ub2e4. <a href=\"https:\/\/m.blog.naver.com\/gss2010\/222612547476\" target=\"_blank\" rel=\"noreferrer noopener\">\uc989, \uac00\uc6a9\ub3c4 = \uc2e0\ub8b0\ub3c4 + \ubcf4\uc804\ub3c4 = (MTBF) \/ (MTBF + MTTR) = (\ud3c9\uade0 \uace0\uc7a5\uc2dc\uac04 \uac04\uaca9) \/ (\ud3c9\uade0 \uace0\uc7a5\uc2dc\uac04 \uac04\uaca9 + \ud3c9\uade0 \uc218\ub9ac\uc2dc\uac04)\uc785\ub2c8\ub2e4<\/a><a href=\"https:\/\/m.blog.naver.com\/sigmagil\/222000245049\" target=\"_blank\" rel=\"noreferrer noopener\"><sup>2<\/sup><\/a>.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\uc774 \uc138 \uac00\uc9c0 \uc694\uc18c\ub294 \ubaa8\ub450 \uc2dc\uc2a4\ud15c\uc758 \uc804\ubc18\uc801\uc778 \uc131\ub2a5\uacfc \ud6a8\uc728\uc131\uc744 \uacb0\uc815\ud558\ub294 \uc911\uc694\ud55c \uc694\uc18c\ub4e4\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc744 \uc124\uacc4\ud560 \ub54c\ub294 \uc774\ub4e4 \uc694\uc18c\ub97c \ucda9\ubd84\ud788 \uace0\ub824\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n&#8220;`html\n<div class=\"chapter19-wide\">\n\n  <h1>\uc2e0\ub8b0\ub3c4 \u00b7 \uc815\ube44\ub3c4 \u00b7 \uac00\uc6a9\ub3c4<\/h1>\n\n  <div class=\"subtitle\">\n    Reliability \u00b7 Maintainability \u00b7 Availability \u00b7 Failure Rate \u00b7 MTTF \u00b7 MTTR \u00b7 MDT\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>1. \uc2e0\ub8b0\uc131 \ucc99\ub3c4<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc2e0\ub8b0\uc131\uc744 \ub098\ud0c0\ub0b4\uae30 \uc704\ud574\uc11c\ub294\n      \uc77c\uad00\ub41c \ucc99\ub3c4\uac00 \ud544\uc694\ud558\ub2e4.\n      \ud544\uae30\uc5d0\uc11c\ub294 \ubd88\ud655\uc2e4\uc131\uc744 \ud3ec\ud568\ud558\ub294 \ud655\ub960\ubd84\ud3ec\ub97c \uc774\uc6a9\ud55c\ub2e4.\n    <\/p>\n\n    <ul>\n      <li>\uace0\uc7a5\ubd84\ud3ec\ud568\uc218 F(t)<\/li>\n      <li>\uace0\uc7a5\ubc00\ub3c4\ud568\uc218 f(t)<\/li>\n      <li>\uc2e0\ub8b0\ub3c4\ud568\uc218 R(t)<\/li>\n      <li>\uace0\uc7a5\ub960 h(t)<\/li>\n    <\/ul>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>2. \uace0\uc7a5\ubd84\ud3ec\ud568\uc218 F(t)<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc218\uba85\uc774 T\uc778 \ubd80\ud488\uc774\n      \uc2dc\uac04 t\uae4c\uc9c0 \uace0\uc7a5\ub0a0 \ud655\ub960\uc774\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      F(t) = Pr(T \u2264 t)\n    <\/div>\n\n    <p>\n      \uc2dc\uac04\uc758 \uacbd\uacfc\uc5d0 \ub530\ub77c\n      \ub204\uc801 \uace0\uc7a5\ud655\ub960\uc740 \uc99d\uac00\ud55c\ub2e4.\n    <\/p>\n\n    <pre>\n      \ud655\ub960\n       \u2191\n      1\u2502                    \u2500\u2500\u2500\u2500\u2500 F(t)\n       \u2502                ___\/\n       \u2502             __\/\n       \u2502          __\/\n       \u2502       __\/\n      0\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2192 t\n    <\/pre>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>3. \uc2e0\ub8b0\ub3c4\ud568\uc218 R(t)<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc2dc\uac04 t\uae4c\uc9c0 \uace0\uc7a5 \uc5c6\uc774\n      \uc815\uc0c1\uc801\uc73c\ub85c \ub3d9\uc791\ud560 \ud655\ub960\uc774\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      R(t) = Pr(T &gt; t)\n    <\/div>\n\n    <div class=\"formula\">\n      R(t) = 1 &#8211; F(t)\n    <\/div>\n\n    <pre>\n      \ud655\ub960\n       \u2191\n      1\u2502\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n       \u2502       \\__\n       \u2502          \\__\n       \u2502             \\__\n       \u2502                \\___ R(t)\n      0\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2192 t\n    <\/pre>\n\n    <div class=\"memory\">\n      <strong>\n        F(t)\ub294 \uc2dc\uac04\uc774 \uc9c0\ub0a0\uc218\ub85d \uc99d\uac00\ud558\uace0,\n        R(t)\ub294 \uc2dc\uac04\uc774 \uc9c0\ub0a0\uc218\ub85d \uac10\uc18c\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>4. \uace0\uc7a5\ubc00\ub3c4\ud568\uc218 f(t)<\/h2>\n\n  <div class=\"card\">\n\n    <div class=\"formula\">\n      f(t) = dF(t)\/dt\n    <\/div>\n\n    <p>\n      \ub610\ud55c\n    <\/p>\n\n    <div class=\"formula\">\n      F(t) = 1 &#8211; R(t)\n    <\/div>\n\n    <p>\n      \uc774\ubbc0\ub85c\n    <\/p>\n\n    <div class=\"formula\">\n      f(t) = -R'(t)\n    <\/div>\n\n    <div class=\"memory\">\n      <strong>\n        \uace0\uc7a5\ubc00\ub3c4\ud568\uc218\ub294\n        \ub204\uc801\uace0\uc7a5\ubd84\ud3ec F(t)\uc758 \uc2dc\uac04 \ubbf8\ubd84\uc774\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>5. \uace0\uc7a5\ub960 h(t)<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc2dc\uac04 t\uae4c\uc9c0 \uc815\uc0c1 \ub3d9\uc791\ud55c \uc81c\ud488\uc774\n      \ubc14\ub85c \ub2e4\uc74c \uc9e7\uc740 \uc2dc\uac04\uad6c\uac04\uc5d0\uc11c\n      \uace0\uc7a5\ub0a0 \uc870\uac74\ubd80 \ud655\ub960\ub85c \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      h(t)\n      =\n      lim<sub>\u0394t\u21920<\/sub>\n      Pr(t &lt; T &lt; t+\u0394t | T &gt; t)\n      \/ \u0394t\n    <\/div>\n\n    <p>\n      \uc870\uac74\ubd80 \ud655\ub960\uc744 \uc774\uc6a9\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      h(t)\n      =\n      lim<sub>\u0394t\u21920<\/sub>\n      [\n      F(t+\u0394t)-F(t)\n      ]\n      \/\n      [\n      \u0394t \u00b7 R(t)\n      ]\n    <\/div>\n\n    <p>\n      \ub530\ub77c\uc11c\n    <\/p>\n\n    <div class=\"formula\">\n      h(t)\n      =\n      f(t)\/R(t)\n    <\/div>\n\n    <div class=\"formula\">\n      h(t)\n      =\n      -R'(t)\/R(t)\n    <\/div>\n\n    <div class=\"formula\">\n      h(t)\n      =\n      &#8211; d\/dt [ ln R(t) ]\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>6. \uace0\uc7a5\ub960\uc5d0\uc11c \uc2e0\ub8b0\ub3c4\ud568\uc218 \uad6c\ud558\uae30<\/h2>\n\n  <div class=\"card\">\n\n    <div class=\"formula\">\n      h(t)\n      =\n      &#8211; d\/dt [ ln R(t) ]\n    <\/div>\n\n    <p>\n      \uc774\ub97c \uc801\ubd84\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      R(t)\n      =\n      exp\n      {\n      -\u222b<sub>0<\/sub><sup>t<\/sup> h(u)du\n      }\n    <\/div>\n\n    <p>\n      \uadf8\ub9ac\uace0\n    <\/p>\n\n    <div class=\"formula\">\n      f(t)\n      =\n      h(t)R(t)\n    <\/div>\n\n    <div class=\"formula\">\n      f(t)\n      =\n      h(t)\n      exp\n      {\n      -\u222b<sub>0<\/sub><sup>t<\/sup> h(u)du\n      }\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>7. MTTF<\/h2>\n\n  <div class=\"card\">\n\n    <div class=\"formula\">\n      MTTF\n      =\n      Mean Time To Failure\n    <\/div>\n\n    <p>\n      \uc218\ub9ac \ubd88\uac00\ub2a5\ud55c \uc81c\ud488\uc758\n      \ud3c9\uade0 \uc218\uba85\uc73c\ub85c \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      \u03bc\n      =\n      E[T]\n      =\n      \u222b<sub>0<\/sub><sup>\u221e<\/sup> t f(t) dt\n    <\/div>\n\n    <p>\n      f(t) = -R'(t)\ub97c \uc774\uc6a9\ud558\uba74\n    <\/p>\n\n    <div class=\"formula\">\n      \u03bc\n      =\n      -\u222b<sub>0<\/sub><sup>\u221e<\/sup>\n      t R'(t)dt\n    <\/div>\n\n    <div class=\"formula\">\n      MTTF\n      =\n      \u222b<sub>0<\/sub><sup>\u221e<\/sup>\n      R(t)dt\n    <\/div>\n\n    <pre>\n      R(t)\n       \u2191\n      1\u2502\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n       \u2502        \\\n       \u2502         \\\n       \u2502          \\__\n       \u2502\/\/\/\/\/\/\/\/\/\/\/\/\/\\\n      0\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2192 t\n\n        \uba74\uc801 = MTTF\n    <\/pre>\n\n    <div class=\"memory\">\n      <strong>\n        R(t) \uace1\uc120 \uc544\ub798\uc758 \uba74\uc801\uc774\n        MTTF\uc774\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>8. MRL \u2014 Mean Residual Life<\/h2>\n\n  <div class=\"card\">\n\n    <div class=\"formula\">\n      MRL\n      =\n      Mean Residual Life\n    <\/div>\n\n    <p>\n      \uc2dc\uac04 t\uae4c\uc9c0 \uc0b4\uc544\ub0a8\uc740 \uc81c\ud488\uc774\n      \uc55e\uc73c\ub85c \uc5bc\ub9c8\ub098 \ub354 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294\uac00\ub97c \ub098\ud0c0\ub0b8\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      R(x|t)\n      =\n      Pr(T &gt; t+x | T &gt; t)\n    <\/div>\n\n    <div class=\"formula\">\n      R(x|t)\n      =\n      R(t+x)\/R(t)\n    <\/div>\n\n    <p>\n      \uc870\uac74\ubd80 \uace0\uc7a5\ub960\uc740\n    <\/p>\n\n    <div class=\"formula\">\n      h(x|t)\n      =\n      -R'(t+x)\/R(t+x)\n    <\/div>\n\n    <div class=\"formula\">\n      h(x|t)\n      =\n      h(t+x)\n    <\/div>\n\n    <p>\n      \ud3c9\uade0 \uc794\uc5ec\uc218\uba85\uc740\n    <\/p>\n\n    <div class=\"formula\">\n      MRL\n      =\n      M(t)\n      =\n      \u222b<sub>0<\/sub><sup>\u221e<\/sup> R(x|t)dx\n    <\/div>\n\n    <div class=\"formula\">\n      M(t)\n      =\n      1\/R(t)\n      \u00b7\n      \u222b<sub>t<\/sub><sup>\u221e<\/sup> R(x)dx\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>9. \uc2e0\ub8b0\ub3c4\uc640 MRL\uc758 \uad00\uacc4<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 \uc2dc\uac04 t\uae4c\uc9c0 \uc0b4\uc544\ub0a8\uc740 \uc81c\ud488\uc758\n      \uc794\uc5ec \uc2e0\ub8b0\ub3c4\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \ud45c\ud604\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      R(x|t)\n      =\n      R(t+x)\/R(t)\n      &lt;\n      1\n    <\/div>\n\n    <p>\n      \ud604\uc7ac \uc2dc\uc810 t \uc774\ud6c4\uc758\n      \uc2e0\ub8b0\ub3c4 \uace1\uc120 \uc544\ub798 \uba74\uc801\uc744 \uc774\uc6a9\ud558\uc5ec\n      \ub0a8\uc740 \ud3c9\uade0 \uc218\uba85\uc744 \uad6c\ud55c\ub2e4.\n    <\/p>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>10. \uac00\uc6a9\ub3c4 Availability<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc218\ub9ac\uac00 \uac00\ub2a5\ud55c \ubd80\ud488\uc5d0\uc11c\ub294\n      \uc2e0\ub8b0\ub3c4 R(t)\ub9cc\uc73c\ub85c\ub294\n      \uc2dc\uc2a4\ud15c \uc6b4\uc6a9\uc0c1\ud0dc\ub97c \ucda9\ubd84\ud788 \ud45c\ud604\ud558\uae30 \uc5b4\ub835\ub2e4.\n    <\/p>\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 \uac00\uc6a9\ub3c4\ub97c \uacb0\uc815\ud558\ub294 \uc694\uc18c\ub85c\n      \ub2e4\uc74c \uc138 \uac00\uc9c0\ub97c \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <ol>\n      <li>\uace0\uc720 \uc2e0\ub8b0\ub3c4<\/li>\n      <li>\ubcf4\uc804\uc131 Maintainability<\/li>\n      <li>\ubcf4\uae09\uc9c0\uc6d0\uc131<\/li>\n    <\/ol>\n\n    <div class=\"memory\">\n      <strong>\n        \uc218\ub9ac\uac00 \uac00\ub2a5\ud55c \uc2dc\uc2a4\ud15c\uc5d0\uc11c\ub294\n        \uace0\uc7a5 \uc5ec\ubd80\ubfd0 \uc544\ub2c8\ub77c\n        \uc5bc\ub9c8\ub098 \ube68\ub9ac \ubcf5\uad6c \uac00\ub2a5\ud55c\uc9c0\ub3c4 \uc911\uc694\ud558\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>11. \uc0c1\ud0dc\ud568\uc218 X(t)<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uace0\uc7a5\uacfc \uc815\uc0c1 \uc0c1\ud0dc\ub97c \ud45c\ud604\ud558\ub294\n      \uc0c1\ud0dc\ud568\uc218\ub97c \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      X(t) = 1\n      &nbsp; : \uc815\uc0c1\ub3d9\uc791\n    <\/div>\n\n    <div class=\"formula\">\n      X(t) = 0\n      &nbsp; : \uace0\uc7a5\uc0c1\ud0dc\n    <\/div>\n\n    <p>\n      \ud3c9\uade0 \uac00\uc6a9\ub3c4\ub294\n    <\/p>\n\n    <div class=\"formula\">\n      A<sub>av<\/sub>(t)\n      =\n      lim<sub>t\u2192\u221e<\/sub>\n      1\/t\n      \u222b<sub>0<\/sub><sup>t<\/sup>\n      X(t)dt\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>12. MUT \u00b7 MTTR \u00b7 MDT<\/h2>\n\n  <div class=\"card\">\n\n    <pre>\n      X(t)\n\n      1 \u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510        \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n                \u2502        \u2502\n                \u2502        \u2502\n      0         \u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n           \u2190MUT\u2192 \u2190 MDT \u2192 \u2190 MUT \u2192\n\n                  \u2514\u2500 MTTR \uc77c\ubd80\n    <\/pre>\n\n    <div class=\"formula\">\n      MUT\n      =\n      Mean Up Time\n    <\/div>\n\n    <div class=\"formula\">\n      MTTR\n      =\n      Mean Time To Repair\n    <\/div>\n\n    <div class=\"formula\">\n      MDT\n      =\n      Mean Down Time\n    <\/div>\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 MDT\ub97c\n      \ub2e8\uc21c \uc218\ub9ac\uc2dc\uac04\ub9cc\uc774 \uc544\ub2c8\ub77c\n      \ub2e4\uc74c \uc2dc\uac04\uc73c\ub85c \uad6c\uc131\ud55c\ub2e4\uace0 \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      MDT\n      =\n      \uc9c4\ub2e8\uc2dc\uac04\n      +\n      \uc900\ube44\uc2dc\uac04\n      +\n      \uad50\uccb4\uc2dc\uac04\n      +\n      \uc2dc\ud5d8\uc2dc\uac04\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>13. \ud3c9\uade0 Up Time \/ Down Time<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uc815\uc0c1 \uc6b4\uc804\uc2dc\uac04\uc744 T<sub>i<\/sub>,\n      \ube44\uac00\ub3d9 \uc2dc\uac04\uc744 D<sub>i<\/sub>\ub85c \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      E[T]\n      =\n      1\/N\n      \u03a3 T<sub>i<\/sub>\n    <\/div>\n\n    <div class=\"formula\">\n      E[D]\n      =\n      1\/N\n      \u03a3 D<sub>i<\/sub>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>14. \ud3c9\uade0 \uac00\uc6a9\ub3c4<\/h2>\n\n  <div class=\"card\">\n\n    <div class=\"formula\">\n      A<sub>av<\/sub>\n      =\n      E[T]\n      \/\n      (\n      E[T] + E[D]\n      )\n    <\/div>\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 \uc774\ub97c \ub2e4\uc74c \ud615\ud0dc\ub85c \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      A<sub>av<\/sub>\n      =\n      MUT\n      \/\n      (\n      MUT + MDT\n      )\n    <\/div>\n\n    <p>\n      \ub610\ud55c\n    <\/p>\n\n    <div class=\"formula\">\n      MUT = MTTF\n    <\/div>\n\n    <p>\n      \ub85c \uae30\ub85d\ub418\uc5b4 \uc788\ub2e4.\n    <\/p>\n\n    <div class=\"memory\">\n      <strong>\n        \uac00\uc6a9\ub3c4\ub294 \uc815\uc0c1 \uc6b4\uc804\uc2dc\uac04\uc744 \ub298\ub9ac\uace0\n        \ube44\uac00\ub3d9\uc2dc\uac04 MDT\ub97c \uc904\uc77c\uc218\ub85d \uc99d\uac00\ud55c\ub2e4.\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>15. \uac00\uc6a9\ub3c4\ub97c \ub192\uc774\ub294 \ubc29\ud5a5<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 \uac00\uc6a9\ub3c4\ub97c \ub192\uc774\uae30 \uc704\ud574\n      MDT\ub97c \uac10\uc18c\uc2dc\ud0a4\ub294 \uac83\uc774\n      \ud6a8\uacfc\uc801\uc774\ub77c\uace0 \uae30\ub85d\ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      MDT \u2193\n      \u2192\n      Availability \u2191\n    <\/div>\n\n    <p>\n      \ubc18\ub300\ub85c MUT\ub97c \uc99d\uac00\uc2dc\ud0a4\ub294 \uac83\ub3c4\n      \uac00\uc6a9\ub3c4 \ud5a5\uc0c1\uc5d0 \ud544\uc694\ud558\ub2e4.\n    <\/p>\n\n    <div class=\"formula\">\n      MUT \u2191\n      \u2192\n      Availability \u2191\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>16. \uc815\ube44\ub3c4 Maintainability<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uace0\uc7a5 \ub09c \ubd80\ud488\uc744\n      \uc5bc\ub9c8\ub098 \ube60\ub974\uace0 \uc815\ud655\ud558\uac8c\n      \uc815\uc0c1\uc0c1\ud0dc\ub85c \ubcf5\uc6d0\ud560 \uc218 \uc788\ub294\uac00\ub97c \ub098\ud0c0\ub0b8\ub2e4.\n    <\/p>\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 \ub2e4\uc74c \ub0b4\uc6a9\uc744 \ud3ec\ud568\ud55c\ub2e4.\n    <\/p>\n\n    <ul>\n      <li>\ubd80\ud488\uc758 \ubd84\ub9ac \ubc0f \uc870\ub9bd\uc774 \uc26c\uc6cc\uc57c \ud568<\/li>\n      <li>\uc815\ube44 \uc791\uc5c5\uc774 \uc6a9\uc774\ud574\uc57c \ud568<\/li>\n      <li>\uc0ac\uc804\uc5d0 \uc815\ube44 \uac00\ub2a5\ud55c \uad6c\uc870\ub97c \uace0\ub824\ud574\uc57c \ud568<\/li>\n      <li>\uace0\uc7a5 \uc9c4\ub2e8 \ubc0f \uad50\ud658\uc774 \uc26c\uc6cc\uc57c \ud568<\/li>\n    <\/ul>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>17. \uc815\ube44\ub3c4 \ud5a5\uc0c1\uc744 \uc704\ud55c \uc124\uacc4<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \uac00\uc6a9\ub3c4 A(t)\ub97c \ud5a5\uc0c1\uc2dc\ud0a4\uae30 \uc704\ud574\uc11c\ub294\n      \uc124\ube44\uc758 \uace0\uc720 \uc2e0\ub8b0\ub3c4\ubfd0 \uc544\ub2c8\ub77c\n      \uc815\ube44\ub3c4\uc640 \ubcf4\uae09\uc9c0\uc6d0\uc131\ub3c4 \ud568\uaed8 \ud5a5\uc0c1\ud574\uc57c \ud55c\ub2e4.\n    <\/p>\n\n    <div class=\"memory\">\n      <strong>\n        \uace0\uc720 \uc2e0\ub8b0\ub3c4 \u2191\n        <br>\n        \uc815\ube44\ub3c4 \u2191\n        <br>\n        \ubcf4\uae09\uc9c0\uc6d0\uc131 \u2191\n        <br><br>\n        \u21d2 Availability \ud5a5\uc0c1\n      <\/strong>\n    <\/div>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>18. \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc758 \uc2e0\ub8b0\uc131\u00b7\uac00\uc6a9\ub3c4 \ud5a5\uc0c1\ubc29\ubc95<\/h2>\n\n  <div class=\"card\">\n\n    <ol>\n\n      <li>\n        <strong>\uad6c\uc870\ud568\uc218 \uc801\uc6a9<\/strong>\n        <br>\n        \uc9c1\ub82c \/ \ubcd1\ub82c \uad6c\uc870 \ubc0f \ubd80\ud488 \ubc30\uce58\ub97c \ube44\uad50\ud558\uc5ec\n        \uc2dc\uc2a4\ud15c \uc2e0\ub8b0\uc131\uc744 \ud5a5\uc0c1\ud55c\ub2e4.\n      <\/li>\n\n      <li>\n        <strong>FMEA \ubd84\uc11d<\/strong>\n        <br>\n        \ubd80\ud488\uc758 \uace0\uc7a5\ubaa8\ub4dc\uc640 \uc601\ud5a5\uc744 \ubd84\uc11d\ud558\uace0\n        \uace0\uc7a5\ubaa8\ub4dc\ubcc4 \uac1c\uc120\ub300\ucc45\uc744 \uc218\ub9bd\ud55c\ub2e4.\n      <\/li>\n\n      <li>\n        <strong>Active Standby \/ Passive Standby \uad6c\uc131<\/strong>\n        <br>\n        Standby \uad6c\uc870\ub97c \uc774\uc6a9\ud558\uc5ec\n        \uc2dc\uc2a4\ud15c \uc2e0\ub8b0\ub3c4\ub97c \ud5a5\uc0c1\ud55c\ub2e4.\n      <\/li>\n\n      <li>\n        <strong>\uc2e0\ub8b0\ub3c4\uac00 \ub0ae\uc740 \ubd80\ud488 \uac1c\uc120<\/strong>\n        <br>\n        \uc2e0\ub8b0\ub3c4\uac00 \ub0ae\uc740 \ubd80\ud488\uc744 \uac1c\uc120\ud558\uc5ec\n        \uc804\uccb4 \uc2dc\uc2a4\ud15c \uc2e0\ub8b0\uc131\uc744 \ud5a5\uc0c1\ud55c\ub2e4.\n      <\/li>\n\n      <li>\n        <strong>PF Interval \ud65c\uc6a9<\/strong>\n        <br>\n        \uc815\ud655\ud55c \uc2e0\ud638\uc640 \uc0c1\ud0dc\uc815\ubcf4\ub97c \uc774\uc6a9\ud558\uc5ec\n        \uc2dc\uc2a4\ud15c \uace0\uc7a5\uc744 \uc608\ubc29\ud558\uace0\n        \uc608\ubc29\ubcf4\uc804 \ud65c\ub3d9\uc744 \uc218\ud589\ud55c\ub2e4.\n      <\/li>\n\n    <\/ol>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>19. \uc124\uacc4 \uc2dc \uace0\ub824\uc0ac\ud56d<\/h2>\n\n  <div class=\"card\">\n\n    <p>\n      \ud544\uae30\uc5d0\uc11c\ub294 \ub2e4\uc74c \ub0b4\uc6a9\uc744\n      \uc81c\uc5b4\uc2dc\uc2a4\ud15c \uc124\uacc4 \uc2dc \uace0\ub824\uc0ac\ud56d\uc73c\ub85c \uc815\ub9ac\ud55c\ub2e4.\n    <\/p>\n\n    <ol>\n\n      <li>\n        \uc2dc\uc2a4\ud15c\uc758 \uc608\uae30\uce58 \ubabb\ud55c \ubd88\ub7c9 \ubc1c\uc0dd\ub960\uc744 \uc904\uc5ec\n        \uace0\uc7a5\uc758 \ud655\ub960\uc744 \uac10\uc18c\uc2dc\ud0a8\ub2e4.\n      <\/li>\n\n      <li>\n        \ube44\ub3d9\uae30\uc2dd \ub610\ub294 \uc6b4\uc804\uae30\uc220 \ub4f1\uc758 \uc801\uc6a9\uc73c\ub85c\n        \ud2b9\uc815 \ubd80\ud488 \uace0\uc7a5\uc774 \uc804\uccb4 \uc2dc\uc2a4\ud15c\uc5d0 \ubbf8\uce58\ub294 \uc601\ud5a5\uc744 \uc904\uc778\ub2e4.\n      <\/li>\n\n      <li>\n        \uc81c\uc870 \ubc0f \uc801\uc6a9\ubc29\ubc95\uc5d0 \ub530\ub77c\n        \uc2e0\ub8b0\ud560 \uc218 \uc788\ub294 \uc81c\ud488\uc744 \uc0ac\uc6a9\ud55c\ub2e4.\n      <\/li>\n\n      <li>\n        \uc2dc\uc2a4\ud15c \ubd80\ud488\uc758 \uace0\uc7a5\ud655\ub960\uacfc \uc218\uba85\uc744\n        \uc124\uba85\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc774 \ud544\uc694\ud558\ub2e4.\n      <\/li>\n\n    <\/ol>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>20. \uc2e0\ub8b0\ub3c4 \ud568\uc218 \uad00\uacc4<\/h2>\n\n  <div class=\"table-wrap\">\n\n    <table>\n\n      <thead>\n        <tr>\n          <th>\ud56d\ubaa9<\/th>\n          <th>PDF \ud544\uae30\uc2dd<\/th>\n        <\/tr>\n      <\/thead>\n\n      <tbody>\n\n        <tr>\n          <td><strong>\uace0\uc7a5\ubd84\ud3ec<\/strong><\/td>\n          <td>F(t) = Pr(T \u2264 t)<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uc2e0\ub8b0\ub3c4<\/strong><\/td>\n          <td>R(t) = Pr(T &gt; t) = 1-F(t)<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uace0\uc7a5\ubc00\ub3c4<\/strong><\/td>\n          <td>f(t) = dF(t)\/dt = -R'(t)<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uace0\uc7a5\ub960<\/strong><\/td>\n          <td>h(t) = f(t)\/R(t)<\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uc2e0\ub8b0\ub3c4\uc640 \uace0\uc7a5\ub960<\/strong><\/td>\n          <td>\n            R(t) =\n            exp{-\u222b\u2080\u1d57h(u)du}\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>MTTF<\/strong><\/td>\n          <td>\n            \u222b\u2080\u221eR(t)dt\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>MRL<\/strong><\/td>\n          <td>\n            M(t)\n            =\n            [1\/R(t)]\n            \u222b\u209c\u221eR(x)dx\n          <\/td>\n        <\/tr>\n\n        <tr>\n          <td><strong>\uac00\uc6a9\ub3c4<\/strong><\/td>\n          <td>\n            A<sub>av<\/sub>\n            =\n            MUT\/(MUT+MDT)\n          <\/td>\n        <\/tr>\n\n      <\/tbody>\n\n    <\/table>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <h2>21. PDF OCR \ud750\ub984<\/h2>\n\n  <div class=\"card\">\n\n    <pre>\n      Failure Time T\n           \u2502\n           \u251c\u2500\u2500\u25ba F(t) = Pr(T \u2264 t)\n           \u2502\n           \u251c\u2500\u2500\u25ba R(t) = 1 - F(t)\n           \u2502\n           \u251c\u2500\u2500\u25ba f(t) = dF(t)\/dt\n           \u2502\n           \u2514\u2500\u2500\u25ba h(t) = f(t)\/R(t)\n                         \u2502\n                         \u25bc\n                    Reliability\n                         \u2502\n              \u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n              \u25bc                     \u25bc\n            MTTF                   MRL\n\n\n      Repairable System\n             \u2502\n             \u251c\u2500\u2500\u25ba MUT\n             \u2502\n             \u251c\u2500\u2500\u25ba MTTR\n             \u2502\n             \u2514\u2500\u2500\u25ba MDT\n                    \u2502\n                    \u25bc\n          Aav = MUT\/(MUT+MDT)\n    <\/pre>\n\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <div class=\"warning\">\n    <strong>\n      \uc774 HTML\uc740 NeoStudio \ud544\uae30 PDF\ub97c \ud398\uc774\uc9c0\ubcc4\ub85c \ud310\ub3c5\ud558\uc5ec \ubcc0\ud658\ud55c \uac83\uc774\ub2e4.\n      \ud544\uae30 \uc911 \uc0ad\uc81c\uc120\uc774 \uadf8\uc5b4\uc9c4 \uc2dd\uc740 \ucd5c\uc885 \ub0b4\uc6a9\uc5d0\uc11c \uc81c\uc678\ud588\uace0,\n      \ud310\ub3c5 \uac00\ub2a5\ud55c \ucd5c\uc885\uc2dd\ub9cc \ubc18\uc601\ud588\ub2e4.\n      \uc911\ubcf5\ub41c Blossom Pink 29, 33 \ud398\uc774\uc9c0\ub294 \ud55c \ubc88\ub9cc \ubc18\uc601\ud588\ub2e4.\n    <\/strong>\n  <\/div>\n\n\n  <!-- ================================================= -->\n  <div class=\"keywords\">\n    Reliability, Maintainability, Availability,\n    R(t), F(t), f(t), h(t),\n    Failure Rate, Hazard Rate,\n    MTTF, MRL, MUT, MTTR, MDT,\n    FMEA, Active Standby, Passive Standby,\n    PF Interval, RAM\n  <\/div>\n\n<\/div>\n&#8220;`\n","protected":false},"excerpt":{"rendered":"<p>\uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc758 \uc124\uacc4 \uc2dc \uc2dc\uc2a4\ud15c\uc758 \uc2e0\ub8b0\ub3c4(Reliability), \uc815\ube44\ub3c4(Maintainability) \ubc0f \uac00\uc6a9\ub3c4(Availability)\ub97c \uc815\uc758\ud558\uace0 \uc124\uba85\ud558\uc2dc\uc624 \uc2e0\ub8b0\uc131 \uacf5\ud559 33 pages \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc758 \uc124\uacc4 \uc2dc \uace0\ub824\ud574\uc57c \ud558\ub294 \uc911\uc694\ud55c \uc694\uc18c\ub4e4\uc778 \uc2e0\ub8b0\ub3c4(Reliability), \uc815\ube44\ub3c4(Maintainability), \uadf8\ub9ac\uace0 \uac00\uc6a9\ub3c4(Availability)\uc5d0 \ub300\ud574 \uc124\uba85\ud558\uaca0\uc2b5\ub2c8\ub2e4: \uc774 \uc138 \uac00\uc9c0 \uc694\uc18c\ub294 \ubaa8\ub450 \uc2dc\uc2a4\ud15c\uc758 \uc804\ubc18\uc801\uc778 \uc131\ub2a5\uacfc \ud6a8\uc728\uc131\uc744 \uacb0\uc815\ud558\ub294 \uc911\uc694\ud55c \uc694\uc18c\ub4e4\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc81c\uc5b4\uc2dc\uc2a4\ud15c\uc744 \uc124\uacc4\ud560 \ub54c\ub294 \uc774\ub4e4 \uc694\uc18c\ub97c \ucda9\ubd84\ud788 \uace0\ub824\ud574\uc57c \ud569\ub2c8\ub2e4. &#8220;`html \uc2e0\ub8b0\ub3c4 \u00b7 \uc815\ube44\ub3c4 \u00b7 \uac00\uc6a9\ub3c4 Reliability [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1185],"tags":[1385,1386,1383,1384],"class_list":["post-6593","post","type-post","status-publish","format-standard","hentry","category-1185","tag-availability","tag-maintainability","tag-ram","tag-reliablity"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/6593","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/comments?post=6593"}],"version-history":[{"count":9,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/6593\/revisions"}],"predecessor-version":[{"id":9585,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/posts\/6593\/revisions\/9585"}],"wp:attachment":[{"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/media?parent=6593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/categories?post=6593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/now0930.pe.kr\/wordpress\/wp-json\/wp\/v2\/tags?post=6593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}