臺灣博碩士論文加值系統

本研究主要研究目的係以專利引證網絡分析探討奈米纖維產業在技術網絡演化與匯流的動態變遷，以及分析專利特性與引證網絡特性對於奈米纖維技術匯流程度之關聯性，從而瞭解奈米纖維技術匯流發展脈絡及情境。
本研究搜尋美國專利商標局(USPTO)資料庫，樣本觀測值為262筆奈米纖維技術的關鍵專利，然後建構專利引證矩陣，並以UCINET進行奈米纖維技術網絡分析，針對專利引證與匯流程度的情形，透過專利引證網絡分析與階層迴歸分析進行實證研究。
研究結果發現，目前奈米纖維技術與其他科技的匯流(專利引用)程度較低|。此外，在專利特性變數當中的「引用文獻」、「申請專利範圍」、「專利家族」、「引用國外專利」和匯流程度有顯著的正相關；「申請專利範圍」、「自我引證」和匯流程度有顯著的負相關。網絡中心性中的度數中心性、接近中心性、以及居間中心性皆和匯流程度有顯著正相關。

The main purpose of this study was to explore the evolution and convergence of nanofibers based on patent citation network analysis. Besides, this study investigates the relationship between patent characteristic and citation network characteristic on nano-convergence.
This paper mainly collected patent information in the United States Patent and Trademark Office (USPTO) database. This study data consisted of 262 key patents in the nanofibers technology and further constructed a patent citation matrix; finally, UCINET software was used for nanofibers technology network analysis. Finally, hierarchical regression analysis are used to analyze the nano-convergence
The primary findings indicate that the convergence degree of nanofibers’ technologies with other technologies is low in current stage. Moreover, some of patent characteristics including “Reference citing”, “Claim”, “Patent Family”, “Foreign Patent”, and “Self-citation” have significant effects on Nanofiber convergence. “Degree”, “Closeness”, “Betweenness” in citation network characteristic has significantly positive effects on nanofiber-convergence.

中文摘要 I
Abstract III
Acknowledgment V
Table of Content VII
List of Table IX
List of Figure XI

Chapter 1 Introduction 1
1.1 Research Background and Motivation 1
1.2 Research Objectives 5
1.3 Research Questions 6
1.4 Research Procedures 7

Chapter 2 Literature Review 9
2.1 The technological Change of Nanofibers 9
2.1.1 A brief Introduction of Nanotechnologyand
Applications 9
2.1.2 A brief Introduction of Nanofibers’Convergence 10
2.2 Technological Innovation 16
2.3 Technological Evolution 23
2.4 Literature on patent analysis 28
2.4.1 Methods of Patent Analysis 28
2.4.2 Patent Citation Analysis 34
2.5 Patent Analysis 35
2.5.1 Introduction of Social Network Analysis 35
2.5.2 Indicators of Social Network Analysis 37
2.5.3 Patent Citation Network Analysis 39
2.6 Sythesis 40

Chapter 3 Methodology 43
3.1 Research design 43
3.2 Research Model and Hypothesis Development 45
3.2.1 Patent Characteristic and Convergence Degree 46
3.2.2 Network Characteristic and Convergence Degree 47
3.3Definition of Variable 49
3.4 Patent Data Collection and Selection Procedure 52

Chapter 4 Finds and Results 55
4.1 General Trend of Nanofiber Patent 55
4.2 The Network Characteristics of NanofiberPatent 56
4.3 InDegree and OutDegree of Nanofibers 59
4.4 Network Centrality of Nanofibers 60
4.4.1 Degree Centrality 60
4.4.2 Closeness Centrality 61
4.4.3 Betweenness Centrality 61
4.5 HypothesisTest 62

Chapter 5 Conclusions 67
5.1 Conclusions 67
5.2 Limitation and Further Research 69

References 71
Appendix 82

List of Tables
Table 1-1 Statistics of global market for nanofibers 2
Table 2-1 Nanotechnology applications 10
Table 2-2 Comparison of processing techniques for obtaining nanofibers 14
Table 2-3 Advantages and disadvantages of various processing techniques 14
Table 2-4 Main Application of nanofiber 16
Table 2-5 Technological Evolution concepts 24
Table 2-6The definition of CHI indicators 29
Table 2-7Literature on patent indicators 31
Table 3-1 Patent search strategy 52
Table 3-2 Patent citations distribution 53
Table 4-1Top 5 firms patent citation with other firms 58
Table 4-2 Network Centralization 60
Table 4-3 Correlation matrix 63
Table 4-4 Hierarchical regression on convergence degree of nanofibers
technology 65
Table 5-1 Summaries of hypotheses 68

List of Figures
Figure 1-1Summary figure global market for nanofibers, 2005-2017 3
Figure 1-2 Overview of this dissertation 8
Figure 2-1 Obtaining nanofibers by drawing 11
Figure 2-2 Obtaining nanofibers by template synthesis 12
Figure 2-3 The S-curve concept of a technological life cycle 18
Figure 2-4 S-curve technology replacement model 18
Figure 2-5 The Abernathy – Utterback model 19
Figure 2-6 Christiansen’s view of S-curve technology replacement model 21
Figure 2-7 The disruptive innovation model 22
Figure 3-1 The research design of this dissertation 43
Figure 3-2 Research model 45
Figure 4-1 Trend analysis of patent counts of nanofibers 56
Figure 4-2 Patents network of nanofibers technology 57

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