{"id":1168,"date":"2013-07-01T16:17:33","date_gmt":"2013-07-01T09:17:33","guid":{"rendered":"http:\/\/science-technology.vn\/?p=1168"},"modified":"2013-07-01T16:17:33","modified_gmt":"2013-07-01T09:17:33","slug":"tinh-toan-may","status":"publish","type":"post","link":"https:\/\/science-technology.vn\/?p=1168","title":{"rendered":"T\u00ednh to\u00e1n m\u00e2y"},"content":{"rendered":"

M\u1ed9t s\u1ed1 trong c\u00e1c b\u1ea1n \u0111\u00e3 h\u1ecfi t\u00f4i v\u1ec1 T\u00ednh to\u00e1n m\u00e2y v\u00e0 c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 h\u1ecdc th\u00eam v\u1ec1 n\u00f3 \u1edf \u0111\u00e2u? T\u00ednh to\u00e1n m\u00e2y th\u01b0\u1eddng \u0111\u01b0\u1ee3c d\u1ea1y trong ch\u01b0\u01a1ng tr\u00ecnh Qu\u1ea3n l\u00ed h\u1ec7 th\u00f4ng tin (ISM) v\u00ec n\u00f3 h\u1ed9 t\u1ee5 v\u00e0o qu\u1ea3n l\u00ed k\u1ebft c\u1ea5u n\u1ec1n c\u00f4ng ngh\u1ec7 th\u00f4ng tin (CNTT) (ph\u1ea7n c\u1ee9ng, ph\u1ea7n m\u1ec1m, m\u1ea1ng v.v.). T\u00f4i c\u0169ng \u0111\u00e3 vi\u1ebft nhi\u1ec1u b\u00e0i v\u1ec1 t\u00ednh to\u00e1n m\u00e2y tr\u01b0\u1edbc \u0111\u00e2y tr\u00ean blog n\u00e0y.<\/span><\/p>\n

V\u1ec1 c\u0103n b\u1ea3n t\u00ednh to\u00e1n m\u00e2y l\u00e0 m\u00f4 h\u00ecnh t\u00ednh to\u00e1n, kh\u00f4ng ph\u1ea3i l\u00e0 c\u00f4ng ngh\u1ec7. Trong m\u00f4 h\u00ecnh n\u00e0y, m\u1ecdi k\u1ebft c\u1ea5u n\u1ec1n nh\u01b0 m\u00e1y ph\u1ee5c v\u1ee5, m\u1ea1ng, \u1ee9ng d\u1ee5ng v\u00e0 c\u00e1c ph\u1ea7n t\u1eed kh\u00e1c li\u00ean quan t\u1edbi trung t\u00e2m d\u1eef li\u1ec7u CNTT \u0111\u01b0\u1ee3c cung c\u1ea5p cho ng\u01b0\u1eddi d\u00f9ng qua Internet b\u1edfi c\u00f4ng ti d\u1ecbch v\u1ee5 m\u00e2y b\u00ean ngo\u00e0i. Thay v\u00ec c\u00f3 t\u1ed5 ch\u1ee9c CNTT ri\u00eang c\u1ee7a m\u00ecnh, c\u00f4ng ti c\u00f3 th\u1ec3 mua d\u1ecbch v\u1ee5 CNTT v\u00e0 k\u1ebft n\u1ed1i v\u1edbi “m\u00e2y” v\u1ec1 d\u1ecbch v\u1ee5 k\u1ebft c\u1ea5u n\u1ec1n (m\u1ea1ng, m\u00e1y ph\u1ee5c v\u1ee5, v.v), d\u1ecbch v\u1ee5 n\u1ec1n t\u1ea3ng (h\u1ec7 \u0111i\u1ec1u h\u00e0nh), hay d\u1ecbch v\u1ee5 ph\u1ea7n m\u1ec1m (\u1ee9ng d\u1ee5ng ph\u1ea7n m\u1ec1m nh\u01b0 d\u1ecbch v\u1ee5). T\u00ednh to\u00e1n m\u00e2y l\u00e0m cho to\u00e0n th\u1ec3 k\u1ebft c\u1ea5u n\u1ec1n CNTT c\u00f3 v\u1ebb nh\u01b0 “m\u00e2y \u1ea3o” v\u1edbi ng\u01b0\u1eddi d\u00f9ng v\u00e0 \u0111\u1ec3 h\u1ecd tr\u1ea3 ti\u1ec1n \u0111\u00edch x\u00e1c cho kh\u1ed1i l\u01b0\u1ee3ng b\u1ed9 nh\u1edb, n\u0103ng l\u1ef1c t\u00ednh to\u00e1n, an ninh v\u00e0 c\u00e1c ch\u1ee9c n\u0103ng kh\u00e1c m\u00e0 h\u1ecd c\u1ea7n.<\/p>\n

C\u00f3 \u01b0u \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a t\u00ednh to\u00e1n m\u00e2y. Nh\u01b0\u1ee3c \u0111i\u1ec3m th\u00f4ng th\u01b0\u1eddng nh\u1ea5t l\u00e0 r\u1ee7i ro an ninh. M\u1ecdi th\u1ee9 m\u00e0 c\u00f4ng ti c\u00f3 b\u00e2y gi\u1edd \u0111\u01b0\u1ee3c l\u01b0u \u1edf h\u1ec7 th\u1ed1ng c\u1ee7a c\u00f4ng ti d\u1ecbch v\u1ee5 v\u00e0 ch\u00fang c\u00f3 th\u1ec3 b\u1ecb truy nh\u1eadp b\u1edfi nh\u1eefng ng\u01b0\u1eddi kh\u00f4ng c\u00f3 th\u1ea9m quy\u1ec1n. M\u1eb7c d\u1ea7u c\u00f4ng ti m\u00e2y h\u1ee9a r\u1eb1ng d\u1eef li\u1ec7u c\u1ee7a kh\u00e1ch h\u00e0ng l\u00e0 an ninh nh\u01b0ng v\u00ec qu\u1ea3n l\u00ed an ninh c\u00f2n ch\u01b0a ho\u00e0n h\u1ea3o, kh\u1ea3 n\u0103ng c\u1ee7a kh\u00e1ch h\u00e0ng \u0111\u1ec3 bi\u1ebft ch\u1eafc ai \u0111ang truy nh\u1eadp v\u00e0o d\u1eef li\u1ec7u c\u1ee7a h\u1ecd hay d\u00f9ng n\u00f3 v\u1eabn c\u00f2n b\u1ecb gi\u1edbi h\u1ea1n. \u0110\u00f3 l\u00e0 l\u00ed do t\u1ea1i sao m\u1ed9t s\u1ed1 c\u00f4ng ti v\u1eabn ng\u1ea7n ng\u1ea1i ch\u1ea5p nh\u1eadn t\u00ednh to\u00e1n m\u00e2y.<\/p>\n

V\u1ec1 l\u00ed thuy\u1ebft, ng\u01b0\u1eddi d\u00f9ng ch\u1ec9 k\u1ebft n\u1ed1i v\u1edbi m\u00e2y v\u00e0 m\u1ecdi th\u1ee9 ph\u1ea3i l\u00e0m vi\u1ec7c t\u1ed1t. Trong th\u1ef1c t\u1ebf, c\u00f3 nh\u1eefng c\u00f4ng ngh\u1ec7 kh\u00e1c nhau v\u00e0 c\u00e1c chu\u1ea9n kh\u00e1c nhau, n\u1ebfu c\u00f4ng ti t\u00ednh to\u00e1n m\u00e2y d\u00f9ng chu\u1ea9n hay c\u00f4ng ngh\u1ec7 kh\u00e1c h\u01a1n chu\u1ea9n hay c\u00f4ng ngh\u1ec7 c\u1ee7a b\u1ea1n th\u00ec m\u1ed9t s\u1ed1 \u1ee9ng d\u1ee5ng b\u1ea1n d\u00f9ng c\u00f3 th\u1ec3 kh\u00f4ng t\u01b0\u01a1ng h\u1ee3p v\u1edbi k\u1ebft c\u1ea5u n\u1ec1n c\u1ee7a c\u00f4ng ti m\u00e2y. Do \u0111\u00f3 c\u00f3 th\u1ec3 c\u1ea7n nhi\u1ec1u th\u1eddi gian \u0111\u1ec3 s\u1eeda \u0111\u1ed5i cho ch\u1eafc ch\u00fang c\u00f3 th\u1ec3 l\u00e0m vi\u1ec7c \u0111\u01b0\u1ee3c. B\u1ea1n kh\u00f4ng th\u1ec3 ch\u1ec9 chuy\u1ec3n m\u1ecdi \u1ee9ng d\u1ee5ng l\u00ean m\u00e2y v\u00e0 mong \u0111\u1ee3i ch\u00fang ch\u1ea1y ngay l\u1eadp t\u1ee9c \u0111\u01b0\u1ee3c.<\/p>\n

C\u00e1ch ti\u1ebfp c\u1eadn b\u1ea3o th\u1ee7 c\u1ee7a m\u1ed9t s\u1ed1 c\u00f4ng ti l\u00e0 ch\u1ec9 chuy\u1ec3n c\u00e1c c\u00f4ng vi\u1ec7c \u0111\u1eb7c bi\u1ec7t cho nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 m\u00e2y \u0111\u1ec3 t\u1eadn d\u1ee5ng \u01b0u th\u1ebf v\u1ec1 n\u0103ng l\u1ef1c c\u1ee7a nh\u00e0 cung c\u1ea5p, nh\u01b0ng kh\u00f4ng chuy\u1ec3n m\u1ecdi th\u1ee9. Nh\u1eefng d\u1eef li\u1ec7u nh\u1ea1y c\u1ea3m n\u00e0o \u0111\u00f3 \u0111\u01b0\u1ee3c gi\u1eef trong nh\u00e0 \u0111\u1ec3 ki\u1ec3m so\u00e1t t\u1ed1t h\u01a1n. T\u1ea5t nhi\u00ean, c\u00f4ng ti t\u00ednh to\u00e1n m\u00e2y bi\u1ec7n minh r\u1eb1ng kh\u00f4ng chuy\u1ec3n m\u1ecdi th\u1ee9 cho l\u00e0 h\u1ecd kh\u00f4ng c\u00f3 ngh\u0129a v\u00ec h\u1ecd c\u00f3 ki\u1ec3m so\u00e1t nghi\u00eam ng\u1eb7t trong m\u00f4i tr\u01b0\u1eddng c\u1ee7a h\u1ecd c\u00f2n h\u01a1n trong t\u1ed5 ch\u1ee9c CNTT b\u00ecnh th\u01b0\u1eddng. H\u1ecd c\u0169ng n\u00f3i r\u1eb1ng h\u1ecd c\u00f3 th\u1ec3 b\u1ed5 sung n\u0103ng l\u1ef1c hay \u1ee9ng d\u1ee5ng g\u1ea7n nh\u01b0 v\u00e0o l\u00fac th\u00f4ng b\u00e1o nh\u01b0ng nhi\u1ec1u kh\u00e1ch h\u00e0ng v\u1eabn kh\u00f4ng \u0111\u01b0\u1ee3c thuy\u1ebft ph\u1ee5c. \u00cdt nh\u1ea5t l\u00e0 ch\u01b0a.<\/p>\n

V\u1ec1 c\u0103n b\u1ea3n, t\u00ednh to\u00e1n m\u00e2y v\u1eabn \u0111ang ti\u1ebfn ho\u00e1 v\u00e0 c\u00f3 l\u1ebd ph\u1ea3i m\u1ea5t th\u00eam v\u00e0i n\u0103m n\u1eefa \u0111\u1ec3 \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn \u0111\u1ea7y \u0111\u1ee7 nh\u01b0ng n\u00f3 l\u00e0 m\u1ed9t chi\u1ec1u h\u01b0\u1edbng quan tr\u1ecdng v\u00ec ph\u1ea7n m\u1ec1m \u0111ang nhanh ch\u00f3ng tr\u1edf th\u00e0nh d\u1ecbch v\u1ee5 h\u01a1n l\u00e0 s\u1ea3n ph\u1ea9m.<\/p>\n

 <\/p>\n

—-English version—-<\/p>\n

 <\/p>\n

Cloud computing<\/p>\n

Some of you have asked me about Cloud Computing and where could you learn more about it? Cloud computing is often taught in the Information System Management (ISM) program as it is focusing on the management of Information Technology (IT) infrastructures (hardware, software, network etc). I have also written several articles on Cloud computing previously in this blog.<\/p>\n

Basically Cloud Computing is a computing model, not a technology. In this model, all the infrastructures such as servers, networks, applications and other elements related to IT data centers are provided to users via the Internet by an external cloud service company. Instead of having its own IT organization, a company can buy IT services and connect to the “cloud” for infrastructure services (Network, servers etc), platform services (operating system), or software services (Software as a Service application). Cloud computing makes an entire IT infrastructure look like a \u201cVirtual cloud\u201d to users and let them pay exactly the amount of storage, computing power, security and other functions that they need.<\/p>\n

There are advantages and disadvantages of cloud computing. The most common disadvantage is security risks. Everything the company has is now stored in the service company\u2019s systems and they could be accessed by unauthorized people. Although Cloud Company promises that customer’s data is secure but with since security management is not yet perfect, a customer’s ability to know for sure who is accessing to their data or using it is still limited. That is why some companies are hesitating to adopt cloud computing.<\/p>\n

In theory, users just connect to the cloud and everything should work well. In reality, there are different technologies and different standards, if Cloud computing company uses different standard or technology than yours then some applications that you use may be incompatible with cloud company\u2019s infrastructures. Therefore it may need more time to modify to make sure they can work. You cannot just move all applications to the cloud and expect them to run immediately.<\/p>\n

The conservative approach of some companies is only move specific works to a cloud service provider to take advantage of the provider’s capacity, but not everything. Certain sensitive data are to be kept in house for better control. Of course, cloud computing companies argued that by not move everything to them does not make sense as they have strict control in their environment than in a normal IT organization. They also said that they can add capacity or applications almost at a moment’s notice but many customers are still not convinced. At least, not yet.<\/p>\n

Basically, Cloud computing is still evolving and it probably takes few years to be adopted fully but it is an important direction as software is quickly becoming more of a service than a product.<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t s\u1ed1 trong c\u00e1c b\u1ea1n \u0111\u00e3 h\u1ecfi t\u00f4i v\u1ec1 T\u00ednh to\u00e1n m\u00e2y v\u00e0 c\u00e1c b\u1ea1n c\u00f3 th\u1ec3 h\u1ecdc th\u00eam v\u1ec1 n\u00f3 \u1edf \u0111\u00e2u? T\u00ednh to\u00e1n … <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,26],"tags":[],"class_list":["post-1168","post","type-post","status-publish","format-standard","hentry","category-cong-nghe-thong-tin","category-xu-huong-cong-nghe"],"_links":{"self":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/1168","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1168"}],"version-history":[{"count":1,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/1168\/revisions"}],"predecessor-version":[{"id":1169,"href":"https:\/\/science-technology.vn\/index.php?rest_route=\/wp\/v2\/posts\/1168\/revisions\/1169"}],"wp:attachment":[{"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/science-technology.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}