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奧林匹克大會與城市轉型： 2008年北京與2012年倫敦奧運之比較研究

為了解決Pixabay logo的問題，作者徐坦諾 這樣論述：

Sports mega-events are deeply rooted in modern societies, from FIFA World Cups to Olympic Games. These events are more than the sports competitions they deliver. They create a substantial impact on host cities, countries, and societies by changing people's urban landscape and behavior. Furthermore,

the dimensions of such events are ever-growing, and a rethinking of hosting the Olympics has led to the establishment of legacy planning policies required by the IOC. Throughout a comparative case study of the Olympic Games in Beijing and London, 2008 and 2012, this thesis shows that implementing t

his new procedure changed the sustainable legacy outcome with a particular focus on urban development and sustainability. Moreover, Beijing 2008 and London 2012 are analyzed with a mixed-method approach, combining and comparing qualitative and quantitative results of content analysis and further ana

lyzing the sustainable impact of the Olympic legacy in the form of a linear regression model. All models are based on the following dimensions analyzed: urban development, environmental enhancement, policy and governance, human development, intellectual property, and social development.The combined

results clearly show that both host cities, Beijing and London, created a long-lasting legacy for their cities and people. However, a clear difference is visible when legacy factors are further analyzed, then the legacy of London 2012 is more sustainable than the one of Beijing 2008. The underlying

rationale for hosting Olympic Games in Beijing is fundamentally different from the one in London. China wanted to take a new role by hosting the Olympics and creating a new sports and infrastructure construction movement. In contrast, London intended to upgrade its old and not well-developed neighbo

rhoods.

基於區塊鏈之實物期貨交易系統

為了解決Pixabay logo的問題，作者林暉恩 這樣論述：

台灣目前的期貨皆以國外大宗商品以及現金交割為主，而一般中小型生產者的農產品卻無法透過現有的期貨市場享有分散風險的好處。此外，現有的期貨交易資料皆儲存於期貨交易所，而期貨交易所的系統仍為傳統集中式的架構，因此一直都有系統崩潰、資料損毀等問題存在。本研究期望透過建置一個實物期貨交易平台，幫助農牧業生產者與需求者直接媒合，減少中間商不當操作市場的問題。生產者能事先得知要生產的數量以及約定一個合理的價格，避免未來的不確定性。買方在訂單成立後若不需要商品也可將訂單以自訂的價格在平台上轉手，藉此分散買方的風險。區塊鏈作為一個信任機器，擁有不可竄改以及避免單點故障的好處，因此我們將期貨合約及訂單的內容存於

區塊鏈中來保證整體交易流程的安全。由於公鏈虛擬貨幣的價值較不穩定，我們採用法幣計算款項並引入銀行的角色確保金流的正確。金流都在系統外進行，但繳款資訊會包含於訂單內容中，並由銀行使用智能合約進行確認。最後，我們比較了傳統的PoW與系統採用的PoA兩種共識機制。結果表明，PoA具有吞吐量優勢，可以為用戶帶來更好的體驗。