Designated的問題，透過圖書和論文來找解法和答案更準確安心。 我們找到下列免費下載的地點或者是各式教學

Caves: Archaeology, Chronology and Palaeoenvironment

為了解決Designated的問題，作者Latham, Alfred 這樣論述：

Caves is an account of the scientific study of caves, both its history and its present contributions to the understanding of the past. A large and important amount of evidence about prehistory is preserved in caves, and this is the first synthetic account of the revealing data relating directly t

o prehistory, paleoanthropology and the paleoenvironment which can be found in them. This study includes case studies as well as explanatory text boxes which make the book especially suitable for undergraduate students as well as researchers of prehistory, archaeology, and geology. Case studies incl

ude topics such as: The overlap of Neanderthals and Antrhropologically Modern HumansThe early colonisation of EuropeThe problematic dating of the South African caves designated as the Cradle of HumankindPaleoenvironmental issues relating to hominid speciation

Designated進入發燒排行的影片

滾珠螺桿溝槽研磨轉速控制對螺帽品質與砂輪壽命之研究

為了解決Designated的問題，作者蘇承緯 這樣論述：

中文摘要 隨著科技的進步，電子產業、半導體業、航太產業、工業加工業、車用工業等領域不斷在進步，使得在加工物件上的需求大增。且科技不斷的進步，各行業對產品的精密度、精準度要求也越來越高，故在磨削的過程中，砂輪對加工物件的磨耗參數設定是相當重要的。 本論文之主要研究為透過修改與設定內徑研磨用主軸的轉速、參數，並藉由砂輪磨削對滾珠螺桿中內螺紋的成型變化作為實驗對象，依照歌德型滾珠螺桿的原理為主要探討，並透過精密輪廓量測儀測量內螺紋的螺紋角與粗糙度之結果。利用紀錄每個加工物件測量與參數修改之結果，並利用這些量測與參數修改的分析，找出生產中對品質與速度最好的參數，並利用管制上下限規範分析後，能夠提

前預防不良率的狀況發生，並且延續砂輪在研磨過程中更換的壽命與確保品質的穩定度。 而由研究結果得知砂輪與參數的搭配關係，進而影響了加工物件的內螺紋的螺紋角度、粗糙度。並透過減少修整砂輪量，提高研磨過程中轉速與修整砂輪轉速的過程中，確保牙型角度、粗糙度不變，且能延續砂輪壽命，增加成本效益之結果作為探討，而如何在品質與成本效益中找到最佳平衡點為後續所要面臨的重要課題。

Turan and Me: A Story of Boyhood in South Africa

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為了解決Designated的問題，作者Masotti, Marco V. 這樣論述：

The moving story of two boys, brought together by childhood magic in a world divided by race​.A kaleidoscopic account of a bucolic, magical childhood in 1970s and 80s South Africa, where two boys with very different destinies shared a friendship amid the harsh realities of apartheid. Marco and Turan

--despite one being White, the other designated ＂Coloured＂ under apartheid--develop a deep friendship, based on their shared sense of humor and love of adventure. As they grow older, the strictures of the apartheid regime cause their paths to diverge, but their friendship continues well into their t

eenage years. This book, told from Marco’s perspective as a boy and then as an adult reconciling his memory, is a meditation on that childhood friendship, and on the complexities of race, oppression, and opportunity in apartheid South Africa. Combining modern South African history, stories of Zulu l

ife and culture, the boys’ own adventures amid their growing awareness of apartheid, and the author’s adult reckoning with the harsh realities of racism, Turan and Me will appeal to readers of Trevor Noah’s Born a Crime and Alex Fuller’s Don’t Let’s Go to the Dogs Tonight as a reflection on coming o

f age in an era of injustice. Marco V. Masotti grew up in apartheid-era Amanzimtoti, South Africa, the son of an Italian father and South African mother. He is a partner at Paul, Weiss. Marco serves as a director of the Friends of the Legal Resources Centre, South Africa’s largest public interest,

human rights law clinic and is part of the founding advisory board for the Sorensen Center for International Peace and Justice at the City University of New York School of Law. He is the controlling owner of the Durban, South Africa professional rugby team, the Sharks. He resides in New York, New Y

ork with his family.

具密文等值測試代理重加密之改善方案

為了解決Designated的問題，作者楊芝辰 這樣論述：

在網路的普及促使雲端的發展，人們開始習慣儲存資料到雲端系統上。如何有效率與其他人共享密文成為了一個問題。代理重加密（Proxy re-encryption, PRE）機制，透過委託可信第三方或是半誠實代理器將自己公鑰加密的密文轉化為可用另一方私鑰解開的密文從而實現密文共享機制。雖然該方案解決上述問題。但是，隨著資料量的急遽上升，若能利用搜尋關鍵字，直接篩選出有興趣的資料能在使用上作廣泛的應用，進而發展出具關鍵字搜索代理重加密（Proxy re-encryption with keywords search, PRES）機制，這個概念比傳統方式，透過執行「搜索-下載-解密-利用對方公鑰加密-傳

送」的步驟更有效率。但是，PRES只能搜索相同公鑰下的關鍵字。為了解決該限制，Li's 等人利用了密文相等性驗證(Public key encryption with equality test, PKEET)的性質，提出了第一篇結合了PRE以及PKEET的新機制稱為密文相等性驗證代理重加密（Proxy re-encryption with equality test, PREET），該方案提供不同公鑰下關鍵字的相等性測試，不幸的是，我們發現他們提出的架構在解密步驟的驗證過程中，該驗證方法無法有效驗證密文的完整性，因此我們提出了改進驗證的方案，使驗證有效達到密文的完整性，這將使該機制可以更廣泛

地應用於實踐。此外，本文還給出了隨機預言機模型下基於Diffie-Hellman假設的安全性證明，證明了所提出的方案能夠抵禦選定的密文攻擊。