21,400 research outputs found
The political role of the people's liberation army 1949-1973
Full text linkThis thesis is to study the political role of the People's Liberation Army from the approach of structure and function. The framework of the thesis consists of three major parts, first, the influence of Chinese traditional political culture on, and the formation of, the political role of the PL A; second, the influence of domestic political struggles and external military conflicts on the development of the political role of the PLA; and the third, the analysis of the transition of the PLA's political role from the structure and personnel arrangements of the CCPCC Within the above-mentioned three scopes, this thesis make a thorough discussion on the following: (1) The relationship between the structure of the PRC and the formation of the PLA's political role; (2) How has ideology influenced the army's political role; (3) What is Mao's viewpoint and his influence on the development of the army's political role; (4) What is the link between the army and the party, and how has this developed; (6) What accounts for the expansion of the PLA's political functions; (7) What is the influence of political factional struggles on the PLA's political role; (8) Is it political institution or military institution that controls the recruitment of the military elite; (9) What are the disparities between the military elite in handling international conflicts and what are their political considerations; (10) What is the Party's position in the army; (11) How have the Party’s important meetings and personnel arrangements influenced the rise and fall of the PLA's political role
Rethinking Import-substituting Industrialization: Development Strategies and Institutions in Taiwan and China
Full text linkimport-substituting industrialization, export-oriented industrialization, development strategies, institutions
Network planning and capacity management considering adaptive sectorization in survivable FDMA/CDMA systems
No full textAn Admission Control-Based Benefit Optimization Model for Mobile Communications: the Effect of a Decision Time Budget
No full textModeling of prioritized admission control supporting adaptive performance management in integrated voice/data CDMA systems
No full textSurvivability and performance optimization of cellular DS-CDMA networks considering recovery decision of base stations
No full textInvestigation of Chinese reform characters /by Jane Chu-Mei Kuo.
No full textAlthough the Chinese language has undergone great
changes since the time of Confucius (551-479 B.C.), the basic
structure of the Chinese characters has remained the same.
Beautiful and intriguing as Chinese characters are, indeed,
they are too complicated to learn, to write and to remember.
Hence, as early as 1940, Chairman Mao Tse-tung of the People's
Republic of China pointed out that the Chinese written language
had to be reformed. In 1951, besides pointing out again the
necessity of reform, he brought forth the proposal that vhe
reform should move in the direction of latinization. In 1952,
the Chinese Written Language Reform Committee was established
in Peking. During the Culture Revolution, started in 1966,
reform was greatly speeded up
Du shi feng mao yu hai pai qi zhi Qing mo Min chu chang pian du shi xiao shuo Shanghai xu shi yan jiu
No full textBen shu zhu yao nei rong bao kuo: Shanghai: Qing mo Min chu xiao shuo xing sheng de da ben ying; Qing mo Min chu zuo jia yu du shi Shanghai; qing mo min chu hu shang huan chang de qing yu di tu den
Planning and Resource Management for DS-CDMA Networks
No full text隨著無線通訊技術的發展，其應用亦逐漸普及化，甚至與人們的生活密不可分。無線通訊的目標在提供不受時間、空間限制的多元化服務，包括語音、數據傳輸與影音多媒體等高品質服務。展望未來，不論是企業或個人，皆可無所不在的 (ubiquitous) 應用這些服務。為了滿足持續成長的使用者需求，商業化系統朝向以分碼多工 (CDMA)為主的第三代 (third-generation) 無線通訊網路。
本論文探討直序式分碼多工 (DS-CDMA) 網路的一些議題，包括整合式網路規劃(integrated network planning)、資源管理 (resource management)、允入控制 (call admission control) 等三大主題。從宏觀到微觀，首先提出本論文的研究架構，藉此闡述各主題間的關係。所有的問題建立其數學最佳化模式，並利用拉格蘭日鬆弛法 (Lagrangean relaxation) 求解。每一研究主題的內涵與成果簡述如下，Throughout the world, wireless communications are experiencing extraordinary growth – encompassing and transforming every aspect of our lives, and creating an “always connected” society. To meet ever-growing user demand for much higher data rates, the ongoing migration of voice services from wired to wireless systems, as well as ever-increasing data applications, figure prominently in the drive toward fulfillment of the CDMA-based third-generation (3G) system. This dissertation investigates a number of topics related to mobile wireless communications in DS-CDMA networks. They are integrated in a research framework that, from a macro perspective to a micro perspective, consists of network planning, resource management, and call admission control problems. The planning problem considers adaptive sectorization and a hybrid F/CDMA scheme under QoS/GoS constraints. For resource management problems, adaptive load balancing and network survivability when the network is in operation are discussed. Call admission control problems are comprised of three issues: optimal-revenue, real-time processing, and prioritized handoff control. All problems are formulated as mathematical optimization models, and Lagrangean relaxation is applied as the solution approach.
The contributions of this dissertation are highlighted by the following. The results of the planning problem show that costs are reduced by as much as 55%, when survivability is considered; the achievement of the survivability model is a reduction in time complexity from O(N2) to O(1). The model also offers capacity expansibility. The performance of the proposed adaptive scheme (AS) for load balancing outperforms the non-adaptive (NA) approach by up to 68%. In admission control problems, the optimal revenue model is approximately 8% better than other approaches. In addition, we propose a real-time model to deal with long term revenue analysis. The prioritized model outperforms other approaches in the reduction of the blocking rate. The improvement is up to 70% better than the cutoff priority scheme (CPS), and 75% better than the complete sharing scheme (CSS).
Based on the results, this dissertation suggests several engineering guidelines as follows: network planning that consists of cell planning, which addresses user coverage, and a topology design, which plays an important role for the integrated network planning problem, can solve global optimization. The survivability model fits the requirement of capacity expansion by locating mobile/portable base stations in the places they are most needed. Load balancing achieves significantly more when the AS approach is combined with sectorization. In the optimal revenue admission control model, to accommodate as many as users as possible, the strength of power-controlled signals needs to be properly assigned; in the real-time model, the time budget is a more significant factor than the mean call holding time. The proposed dynamic guide channel (DGC) scheme outperforms other approaches when a cell has fewer channels, and reduces the handoff blocking rate more easily when handoff traffic is heavy.Acknowledgements i
論 文 摘 要 iii
Abstract v
List of Tables x
List of Figures xi
Abbreviations and Acronyms xiii
Nomenclature xv
1 INTRODUCTION 1
1.1 EVOLUTION OF MOBILE WIRELESS COMMUNICATION NETWORKS 1
1.2 CHALLENGING ISSUES OF CDMA NETWORK PLANNING AND RESOURCE MANAGEMENT 3
1.2.1 Mobility 5
1.2.2 QoS/GoS Considerations 7
1.2.3 Network Planning 8
1.2.4 Network Survivability 10
1.3 RELATED WORKS 12
1.3.1 Network Planning & Sectorization 12
1.3.2 Handoff 15
1.3.3 Load Balancing 17
1.3.4 Admission Control 18
1.4 SCOPE OF THIS DISSERTATION 20
2 SYSTEM MODELS 23
2.1 CDMA BACKGROUND 23
2.1.1 Call Admission Control 23
2.1.2 Interference 24
2.1.3 Sectorization 28
2.2 PERFORMANCE MEASUREMENT 32
2.2.1 Call Blocking 32
2.2.2 Adaptive Channel Reservation 34
2.2.3 Multi-classes Traffic 35
2.3 SOLUTION APPROACH 36
2.3.1 Lagrangean Relaxation 37
2.3.2 Dual Problem and Subgradient Method 38
2.3.3 Finding Primal Feasible Solutions 39
3 INTEGRATED NETWORK PLANNING AND CAPACITY MANAGEMENT 41
3.1 OVERVIEW 41
3.2 HYBRID F/CDMA SCHEME 42
3.3 MODIFIED SIR MODELS 44
3.4 THE MODEL 47
3.4.1 Problem Formulation 47
3.4.2 Solution Approach 51
3.4.3 Getting Primal Feasible Solutions 58
3.5 EXPERIMENTS 62
3.6 SENSITIVITY ANALYSIS 65
3.7 SUMMARY 67
4 NETWORK SURVIVABILITY 69
4.1 ASSUMPTIONS 69
4.2 BASIC MODEL 71
4.2.1 Overall Procedure 73
4.2.2 Lagrangean Relaxation 73
4.2.3 Getting Primal Feasible Solutions 75
4.3 EXTENDED MODEL 76
4.3.1 The Rationale of Extended Model 76
4.3.2 Formulation 77
4.3.3 Solution Approach 79
4.4 COMPUTATIONAL EXPERIMENTS 82
4.4.1 Results of Basic Model 82
4.4.2 Results of Extended Model 85
4.5 SENSITIVITY ANALYSIS 87
4.6 SUMMARY 92
5 ADAPTIVE LOAD BALANCING 93
5.1 INTRODUCTION 93
5.2 EFFECT OF VARIOUS TRAFFIC DISTRIBUTIONS 95
5.2.1 Performance Model 95
5.2.2 Traffic Model 96
5.2.3 Effect Analysis 97
5.3 ADAPTIVE LOAD BALANCING 99
5.3.1 Notations 99
5.3.2 Problem Formulation 99
5.3.3 Solution Approach 102
5.4 EXPERIMENT RESULTS 107
5.4.1 Parameter 107
5.4.2 Performance Analysis 108
5.5 SENSITIVITY ANALYSIS 111
5.6 SUMMARY 112
6 CALL ADMISSION CONTROL 113
6.1 OVERVIEW 113
6.2 OPTIMAL-REVENUE ADMISSION CONTROL 114
6.2.1 Introduction 114
6.2.2 The Model 115
6.2.3 Analysis Results 119
6.2.4 Sensitivity Analysis 123
6.3 REAL-TIME ADMISSION CONTROL 124
6.3.1 Background 124
6.3.2 The Model 125
6.3.3 Solution Approach 128
6.3.4 Experiment Results 131
6.4 PRIORITIZED ADMISSION CONTROL 136
6.4.1 System Architecture 136
6.4.2 Adaptive Channel Reservation Model 138
6.4.3 Performance Analysis 140
6.4.4 Sensitivity Analysis 150
6.5 SUMMARY 151
7 CONCLUSIONS 153
7.1 RESEARCH CONTRIBUTIONS 153
7.2 ENGINEERING GUIDELINES 156
7.3 FUTURE WORKS 158
BIBLIOGRAPHY 16
On the Kuiper-Kuo Theorem
No full textAbstractIn this note we shall give a simple and more direct proof of the Kuiper- Kuo Theorem. Also, we shall simplify Kuiper's proof of the Morse Lemma.</jats:p
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