Permutations的問題，透過圖書和論文來找解法和答案更準確安心。 我們找到下列訂位、菜單、價格優惠和問答集

Hybrid Encryption Algorithms Over Wireless Communication Channels

為了解決Permutations的問題，作者 這樣論述：

This book presents novel hybrid encryption algorithms that possess many different characteristics. In particular, ＂Hybrid Encryption Algorithms over Wireless Communication Channels＂, examines encrypted image and video data for the purpose of secure wireless communications. A study of two differen

t families of encryption schemes are introduced: namely, permutation-based and diffusion-based schemes. The objective of the book is to help the reader selecting the best suited scheme for the transmission of encrypted images and videos over wireless communications channels, with the aid of encrypti

on and decryption quality metrics. This is achieved by applying number-theory based encryption algorithms, such as chaotic theory with different modes of operations, the Advanced Encryption Standard (AES), and the RC6 in a pre-processing step in order to achieve the required permutation and diffusio

n. The Rubik’s cube is used afterwards in order to maximize the number of permutations.Transmission of images and videos is vital in today’s communications systems. Hence, an effective encryption and modulation schemes are a must. The author adopts Orthogonal Frequency Division Multiplexing (OFDM),

as the multicarrier transmission choice for wideband communications. For completeness, the author addresses the sensitivity of the encrypted data to the wireless channel impairments, and the effect of channel equalization on the received images and videos quality.Complete simulation experiments with

MATLAB(R) codes are included. The book will help the reader obtain the required understanding for selecting the suitable encryption method that best fulfills the application requirements.

Permutations進入發燒排行的影片

台灣高中職數學科教師甄試中的排列組合、機率、幾何和矩陣問題

為了解決Permutations的問題，作者莊昇翰 這樣論述：

本文針對台灣民國98年至民國102年的高中職數學科教師甄試考題進行分類，以六個重要的數學主題做整理：『排列組合』、『機率』、『平面幾何』、『立體幾何』、『二次曲線』、『矩陣』。這些主題除了介紹試題中曾出現的名詞之定義，還針對與其相關的定理與性質進行證明，最後選擇一些較具代表性的題目供讀者練習。主要的內容有：『排列組合』包含邏輯、集合論、排列、組合、二項式定理、鴿籠原理等；『機率』包含古典機率、條件機率、貝氏定理、伯特蘭投票問題等；『平面幾何』包含方位、平面坐標、平面向量、三角形、圓、多邊形、二次曲線圖形等；『立體幾何』包含空間坐標、空間向量、三垂線定理、四面體、金字塔、柱體、錐體等；『矩陣』

包含矩陣運算、行列式、對角化、凡德孟矩陣等。

Legofied: Building Blocks as Media

為了解決Permutations的問題，作者 這樣論述：

LEGOfied: Building Blocks as Media offers a multi-faceted exploration of LEGO fandom, addressing a blindspot in current accounts of LEGO and an emerging area of interest to media scholars: namely, the role of hobbyist enthusiasts and content producers in LEGO's emergence as a ubiquitous transmedia f

ranchise. This book examines a range of LEGO hobbyism and their attendant forms of mediated self-expression and identity (their "technicities"): artists, aspiring Master Builders, collectors, and entrepreneurs who refashion LEGO bricks into new commodities (sets, tchotchkes, and minifigures). The pr

actices and perspectives that constitute this diverse scene lie at the intersection of multiple transformations in contemporary culture, including the shifting relationships between culture industries and the audiences that form their most ardent consumer base, but also the emerging forms of entrepr

eneurialism, professionalization, and globalization that characterize the burgeoning DIY movement. The major aim of this edited volume, and what makes it a compelling project for media scholars, is its rigorous, mutli-dimensional articulation of how LEGO functions not just as toy, as cultural icon,

or as transmedia franchise, but as a media platform.LEGOfied is centered around their shared experiences, qualitative observations, and semi-structured interviews at a number of LEGO hobbyist conventions. Working outwards from these conventions, each chapter of the book engages additional modes of i

nquiry -- media archaeology, aesthetics, posthumanist philosophy, feminist media studies, and science and technology studies -- to explore the origins, permutations and implications of different aspects of the contemporary LEGO fandom scene. Dr. Nicholas Taylor is Associate Professor of Digital Me

dia at North Carolina State University, USA. He applies critical, feminist and posthumanist perspectives to ethnographies of digital play. His work explores the intersections of subjectivity, communicative practice, technologies, and play across a variety of contexts, from competitive gaming tournam

ents to LEGO conventions. Dr. Chris Ingraham is Assistant Professor of Communication at the University of Utah, USA. He performs scholarship that engages rhetorical theory, media studies, and ecological thought to explore the material and affective aspects of cultural politics in everyday life. His

first academic book, Gestures of Concern, is forthcoming with Duke University Press.

2^k基底多倍平行串列交換架構及基於5^α3^β2^γ點數串列交換架構之快速傅立葉轉換處理器設計

為了解決Permutations的問題，作者鄧光庭 這樣論述：

摘要. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iAbstract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iiAcknowledgement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iiiTable of Content

s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ivList of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiList of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x1 Introduction . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Main Contributions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.2.1 Radix-2k Multi-path Serial Commutator (MSC) FFT Archi

tecture . . . 31.2.2 5α3β2γ-Point Serial Commutator (SC) FFT Architecture . . . . . . . . 31.3 Thesis Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Review of FFT Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.1 Radix-2 DIT/DIF FFT Algori

thms . . . . . . . . . . . . . . . . . . . . . . . . 42.1.1 Decimation-in-time (DIT) FFT Algorithm . . . . . . . . . . . . . . . . 42.1.2 Decimation-in-frequency (DIF) FFT Algorithm . . . . . . . . . . . . . 62.2 High-Radix FFT Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.2.1

Radix-4 FFT Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . 82.2.2 Radix-8 FFT Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . 92.2.3 Radix-2k FFT algorithms . . . . . . . . . . . . . . . . . . . . . . . . . 92.3 Non-power of 2 FFT Algorithms . . . . . . . . . . . . . . . .

. . . . . . . . . 112.3.1 Radix-3 FFT Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . 112.3.2 Radix-5 FFT Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . 123 Review of Pipelined FFT Architectures . . . . . . . . . . . . . . . . . . . . . . . . 143.1 Single-path Delay Feedbac

k (SDF) Architecture . . . . . . . . . . . . . . . . . 143.2 Multi-path Delay Feedback (MDF) Architecture . . . . . . . . . . . . . . . . . 153.3 Multi-path Delay Commutator (MDC) Architecture . . . . . . . . . . . . . . . 153.4 Serial Commutator (SC) Architecture . . . . . . . . . . . . . . . . . .

. . . . 174 Proposed Radix-2k Multi-path Serial Commutator (MSC) FFT Architecture . . 184.1 Existing MSC FFT Architecture and Motivation . . . . . . . . . . . . . . . . . 184.2 FFT with Mathematical Representation . . . . . . . . . . . . . . . . . . . . . 194.2.1 Twiddle Factor Distribution . . . .

. . . . . . . . . . . . . . . . . . . 194.2.2 Butterfly Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.2.3 Principle of the Proposed Architecture . . . . . . . . . . . . . . . . . . 214.3 Radix-2k Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224.3.1

2-Parallel Radix-2k Modules . . . . . . . . . . . . . . . . . . . . . . . 234.3.2 4-Parallel Radix-2k Modules . . . . . . . . . . . . . . . . . . . . . . . 244.3.3 8-Parallel Radix-2k Modules . . . . . . . . . . . . . . . . . . . . . . . 254.4 Processing Element (PE) in Radix-2k Modules . . . . . .

. . . . . . . . . . . 264.4.1 General Structure for the PE . . . . . . . . . . . . . . . . . . . . . . . 264.4.2 Structure for Rotator in the PE . . . . . . . . . . . . . . . . . . . . . . 274.5 Radix-2k MSC FFT architecture . . . . . . . . . . . . . . . . . . . . . . . . . 294.5.1 Radix-2k MSC FFT

Structure . . . . . . . . . . . . . . . . . . . . . . 294.5.2 Hardware Complexity Analysis . . . . . . . . . . . . . . . . . . . . . 334.6 Comparison and Implementation Results . . . . . . . . . . . . . . . . . . . . . 364.7 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . 395 Proposed 5α3β2γ-Point Serial Commutator (SC) FFT Architecture . . . . . . . 405.1 Existing 5α3β2γ-Point FFT Architectures and Motivation . . . . . . . . . . . 405.2 Permutation Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425.2.1 Mathematical Representation . .

. . . . . . . . . . . . . . . . . . . . . 425.2.2 Permutation Circuits for Same-type dimensions exchange . . . . . . . 445.2.3 Permutation Circuits for Different-type dimensions exchange . . . . . 495.3 Processing Element (PE) in the Kernel . . . . . . . . . . . . . . . . . . . . . . 555.3.1 Radix-3

PE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 555.3.2 Radix-5 PE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 565.4 5α3β2γ-Point SC FFT Architecture . . . . . . . . . . . . . . . . . . . . . . . 585.4.1 Kernel Structure . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . 585.4.2 5α3β2γ-Point SC FFT Structure . . . . . . . . . . . . . . . . . . . . . 595.4.3 Hardware Complexity Analysis and Comparison . . . . . . . . . . . . 635.4.4 Extension to Multi-path SC (MSC) FFT Architecture . . . . . . . . . . 655.5 Summary . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . 666 Conclusion and Future Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . 676.1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 676.2 Future Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . 67References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70