A PHP Error was encountered

Severity: Notice

Message: unserialize(): Error at offset 0 of 110 bytes

Filename: inc/geoip-plugin.php

Line Number: 74

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 74
Function: unserialize

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 78

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 78
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 79

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 79
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 80

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 80
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 81

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 81
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 82

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 82
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 83

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 83
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 84

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 84
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 85

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 85
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 86

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 86
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 87

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 87
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 88

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 88
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: inc/geoip-plugin.php

Line Number: 89

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/inc/geoip-plugin.php
Line: 89
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/geolib/Geolib.php
Line: 109
Function: locate

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 65
Function: ip_info

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Trying to access array offset on value of type bool

Filename: libraries/Main_library.php

Line Number: 66

Backtrace:

File: /home/u472053266/domains/maktabtk.com/public_html/application/libraries/Main_library.php
Line: 66
Function: _error_handler

File: /home/u472053266/domains/maktabtk.com/public_html/application/controllers/Blog.php
Line: 115
Function: load

File: /home/u472053266/domains/maktabtk.com/public_html/index.php
Line: 316
Function: require_once

مصادر المعلومات والبيانات في البحث العلمي - موقع مكتبتك

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مصادر المعلومات والبيانات في البحث العلمي

2022-04-10 الكاتب : تقي خالد مشاهدات : 16276 مره تلعب مصادر المعلومات دور بارز في تعزيز المستوي العلمي والمعرفي لدي الباحث العلمي من خلال تزويده بمقدار زاخر من المعلومات يتفق مع ما ينشده من أهداف، كما تسهم مصادر المعلومات في إكسابه ثقافة كبيرة تساعده على الإحاطة بكافة جوانب البحث العلمي
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