近年來，臺灣遭遇許多重大天然災害，如1999年的921大地震、2009莫拉克颱風。過去發生重大災情時，政府常會陷入資訊超載而無法即時有效處理災情事件。隨著Twitter、Facebook、Google Plus、YouTube等社交媒體之快速發展，社交網站媒體近年於國內外重大災情發生時，都發揮了防救災資訊傳遞功能，於防救災作業上解決了更多問題。另一方面，社交媒體扮演相當重要的角色。災時民眾可透過社群網路尋求協助、聯繫朋友、家人，發佈災情照片與分享災情，不只如此，社交媒體於災後復原也發揮相當大的作用。在發生災難時，社交媒體嚴然成為一項重要寶貴的通信網路工具，可以隨時與親朋好友們保持聯繫。
由於災害來臨，社交媒體使民眾能夠趕在政府或其他傳播媒體發佈訊息前，迅速聯繫親朋好友、分享資訊、影音圖片等即時資訊。舉凡如餐飲、醫療資源、臨時住所、避難物資、志工服務與交通運輸。本研究主旨為結合社群概念與財團法人工業技術研究院資通所科專技術OpenGeoSMS其為針對適地性服務所制定的開放式地理簡訊格式標準，應用於Android平臺上的應用程式。提出新式的「大眾防災資訊推播系統」以災害主題為範圍，並將該災害的資訊進行以下的整合：(1)災前防災與整備、(2)災情狀況推播、(3)物資服務推播、(4)災難服務推播、(5)災後重建與搶修狀況推播。整合防災資訊的「生命線」(即事件的狀態)，採用「標籤」的方式標識，方便過濾與追蹤，透過建立防救災群組來監控、分享、推播該群組內的防災資訊。另外，群組成員可再透過第三方社交媒體，分享與獲取防救災事件，將資訊推播給第三方間接關係人。村里長與市/區/鄉/鎮公所業務人員亦可獲取即時的防災資訊，統籌防災資訊後再往上推播給防救災單位。希冀發揮自救互救的精神，讓防救災資訊可以推播更有效率。
本研究之研究方法為系統建模，在系統驗證採用個案研究、專家訪談，總結以下結論：(1) 改善現今防救災資訊流之防災資訊系統，建立逆向之資訊流通模式(2) 結合適地性服務與防災群組，可以更容易、更有效率地擴散防救災資訊(3) 以社群網路為溝通基礎，促進防救災資訊「水平」推播分享(4) 加入管理者審核機制與大眾評價，提升防救災資料可信度與可接受度 (5) 建立防救災事件與周期化模式，提升防救災事件與訊息的管理與追蹤效率。

With the increase of natural disasters that have occurred in the past years, Taiwan has been hit with a series of big natural disasters, from 921 earthquake in 1999,Morakot Typhoon in 2009.The government often falls into the information overload and couldn’t response during and immediately after the natural disaster.The rapid developemnt of online social networking services and social media like Twitter, Facebook, Google+,Youtube etc,can act and try to solve many problems during natural disasters. On the other hand, social media has played a significant role in disseminating information about these disasters by allowing people to share and ask for help and turn to social networking sites to contact friends, post photos and share stories. Social media are also becoming vital to recovery efforts after crises. Social Media has become a valuable means of communication in many places affected by a natural disaster, which allows people to keep in touch with family and friends and access important information.
Due to natural disasters, there is an increased communication since people seek to contact family and friends in the disasters zone, and seek information regarding food,medical resources,shelter, supplies services,volunteer-services and transportation before the publication arrives by government organizations or news media.The aim of the research is to build a public disaster mitigation information management system based on social network and Location-based service OpenGeoSMS which is an Android application for facilitating SMS delivery with geolocation information and developed by Industrial Technology Research Institute of Taiwan to integrate the following life cycle of natural disaster.Such information include: (1) Preparedness and mitigation (2) Emergency management (3) Supplies services (4) Disaster services (5) Disaster recovery.Each cycle has its status,scope and allow seperate groups of users have access to their own Report to maintain and share resports through social media.
This research uses system development, case study, expert interview to achieve the following: (1) Improve the flow of disaster Reports in disaster mitigation system to establish the reverse flow of disaster Reports (2) Combine Location-based services and disaster mitigation group that makes it easier, more efficient to push information (3) Communicate base on social network for promoting sharing to family and friends (4) Let administrator verify the reliability of Reports (5) Establish patterns of disaster life cycles to enhance data management and tracking efficiency.

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