1980年代以降，「產業群聚現象」為各國在發展高科技產業的歷程中，極重要的趨勢與特色，美國的矽谷模式可謂其濫觴並成為仿效的成功典範。透過在特定的地理區域中，結合產業界（私人部門）、學術機構、研究機構、中央與地方政府（公共部門），建構有利於高科技產業長期發展與繁榮地區經濟的「科學城」。 　　產業群聚的優勢在於群居成員可分攤基礎建設成本、共享所需的生存資源；更易因地理上的便利性，形成上下游或關聯性產業的合作網路，使產品、技術、資訊與情感的交流更密切，演化為利害與共、共存共榮的「命運共同體」。本研究以產業環境、研究環境與居住環境所組成的共生環境作為形成高科技產業群聚的中心假設，採用組織生態學、資源依賴與合作網路的觀點，以「環境資源共享」與「產業網路互補」為經緯，剖析不同群聚的共生型態與綜效利益，釐清不同的產業特性對群聚利益的呼應，與對整體產業與企業競爭力的影響。 　　本研究發現共生環境資源的多寡，決定高科技產業群聚的形成與長期發展。產業環境的優勢反映在生產效率與利益的增強，研究環境的優勢反映在技術與研發實力的提昇，居住環境的優勢有助吸引高科技人才加入。而高科技產業專業分工明顯、產品生命週期短、時效性要求高的產業特性，使得合作廠商需要頻繁的溝通與協調，而這些工作卻必須透過面對面的互動才能達成，這也是形成高科技產業群聚的主因。 　　產業群聚的利益在於地理上的接近性，使群聚成員共享生存環境資源，便於建構合作網路關係。「環境資源共享之經濟性」與「產業網路合作之互補性」兩構面，決定高科技產業群聚的共生綜效利益。共生綜效利益高低，會決定群聚的長期發展與演化。共生綜效利益越高，則產業群聚會趨於成長、擴張；反之，將逐漸萎縮、解散。而合作機制的建立，是提高群聚共生綜效的關鍵。合作網路體系中的核心廠商，則負有建立合作機制的責任，政府（公共部門）也可主導合作機制的建立。 　　不同的高科技產業特性，搭配「適合的」共生綜效利益，可提高產業與企業的競爭力。環境依賴程度高的產業特性，對環境資源共享之經濟性的需求就會較高；專業分工程度高的產業特性，對產業網路合作之互補性的需求就會較高。

知識經濟的時代，創新已成為廠商競爭優勢的主要來源。知識的創造、傳遞、轉化和應用，促成廠商創新活動的產生。同時，連結地域空間與廠商創新績效的研究，已成為近代區域經濟與產業發展的重要議題。又，研究者逐漸意識到廠商個體的異質性，進而探求個別廠商的內部能力，吸收能力即成為研究焦點之一。 基此，本研究以全台灣生物技術產業為研究對象，透過廠商問卷之發放，運用因素分析與結構方程模型為分析工具，探討鄰近性－地理鄰近性和組織鄰近性的內涵，以及吸收能力如何扮演外部知識與廠商內部能力的介面，並結合外部知識、內部吸收能力與創新績效之影響路徑。 所得結果如下： 1.從外部知識層面，地理鄰近性扮演重要角色。對於組織鄰近性、創新績效有正面影響效果。其中，組織鄰近性隱含了組織網絡與社會網絡的成分； 2.觀察外部知識與內部能力的連結，外部知識獲取對於吸收能力有正面影響效果； 3.吸收能力對於創新績效亦有正向影響關係； 4.然而，考量到外部知識因素時，吸收能力對於創新績效的效果轉為正向卻不顯著，外部知識直接影響創新績效。 關鍵字：地理鄰近性、組織鄰近性、產業網絡、吸收能力、創新績效 / In the knowledge-based economy, innovation has become a key source of firms’ competitive advantage.The process of knowledge creation, transmission, transformation and application promotes the innovative activities. Meanwhile, the link geographical proximity and innovation performance of firms has become a modern issue of regional economic and industrial study. Also, the researchers gradually realized that the heterogeneity of individual firms, and then pay more ateentionon the internal capabilities of individual firms, thence the absorptive capacity seems to be a decisive element. Our research regards bio-technology industry as the subject promptly.Through sending questionnaires and using factor analysis and structural equation modeling as analysis tool, we observe “proximity” – the nature of geographical proximity and organizational proximity, and how can absorptvie capacity play the interface role between external knowledge and internal capacity, and further connect the external knowledge with internal absorptive capacity and innovation performance. The major results of study were found: 1. In the respect of external knowledge, geography proximity plays a crucial role in affecting organizational proximity and innovation performance. 2. External knowledge has a positive influence on absorptive capacity. 3. On the other hand, absorptive capacity affects the innovation permance of firms. 4. However, concerning the external knowledge, absorptive capacity results to positive but not significant on innovation performance.It implies that external knowledge directly impacts on innovation performance. Keyword：Geographical proximity, Organizational proximity, Industerial network, Absorptive capacity, Innovation performance

Made available in DSpace on 2014-12-17T14:55:38Z (GMT). No. of bitstreams: 1 TiagoHK.pdf: 2636025 bytes, checksum: ce24354f7859d7a6bcea2ea448265402 (MD5) Previous issue date: 2009-06-07 / This work presents a packet manipulation tool developed to realize tests in industrial devices that implements TCP/IP-based communication protocols. The tool was developed in Python programming language, as a Scapy extension. This tool, named IndPM- Industrial Packet Manipulator, can realize vulnerability tests in devices of industrial networks, industrial protocol compliance tests, receive server replies and utilize the Python interpreter to build tests. The Modbus/TCP protocol was implemented as proof-of-concept. The DNP3 over TCP protocol was also implemented but tests could not be realized because of the lack of resources. The IndPM results with Modbus/TCP protocol show some implementation faults in a Programmable Logic Controller communication module frequently utilized in automation companies / Neste trabalho ? apresentada uma ferramenta de manipula??o de pacotes destinada ? realiza??o de testes em dispositivos que implementam protocolos de comunica??o baseados em TCP/IP utilizados em redes industriais. A ferramenta foi desenvolvida em linguagem de programa??o Python, como uma extens?o ao Scapy. Esta ferramenta, denominada IndPM - Industrial Packet Manipulator, permite testar os dispositivos presentes em redes industriais em rela??o a poss?veis vulnerabilidades, realizar testes de conformidade de protocolos, coletar respostas de servidores existentes nas redes e utilizar os recursos do interpretador Python para compor testes. Como prova de conceito, foi implementado o protocolo Modbus/TCP. O protocolo DNP3 sobre TCP tamb?m foi implementado, mas n?o foi testado por indisponibilidade de recursos. Os resultados dos testes obtidos com a manipula??o de pacotes Modbus/TCP mostram falhas de implementa??o em um m?dulo de comunica??o para um Controlador L?gico Program?vel bastante utilizado na ind?stria

In this diploma thesis, the reader is familiarized with polymer optical fiber (POF). Firstly is mentioned theoretical background of optical fibers and optical transmission. The following are the basic properties and significant parameters of POF, a more detailed description of each type POF and their essential advantages and disadvantages in comparison with established optical fibers based on glass. The next chapter describes the area of practical issues: working with fibers and fiber installation, as well as the available connectors and methods of measurement of POF. Closely are analyzed knowledge of the practice, including the utilize in the aerospace and automotive industries, as well as in industrial networks, access data networks and local area networks. The practical part includes the measurement of basic transmission and mechanical parameters, including analysis of the results. The conclusion summarizes all the findings and results of this work, including possible future developments.

本研究之目的在探索國內科技產業的發展過程中，科技公司創業及經營的過程裡，創投公司對科技公司之知識互動關係，探討創投公司在科技公司各經營階段所扮演的角色及功能，創投公司可以提供科技公司之附加價值，影響創投事業與科技公司知識互動之因素，以及創投公司對科技創新之影響。 　　創投公司與科技公司知識互動成功之因素，在於科技公司之知識及資源的需求，以及創投公司所具有之條件，依據上述個案分析發現，其主要關鍵因素如下： 　　1.創投公司之資金為科技公司迫切需要之財務外援。 　　2.經營團隊對資金募集陌生或沒信心。 　　3.認同創投公司之專業能力。 　　4.經營團隊缺乏專業經營管理經驗，對外部知識之依賴度高。 　　5.對創投公司之組織網絡資源（上游零組件材料、下游客戶、策略投資人、新技術來源等）依賴度高。 　　6.產業之成熟度低且變動幅度大，產業前景不明，經營團隊對外部知識之依賴度高。 　　7.企業轉型方向未定，對新產業不熟悉，需要創投公司協助。 　　8.科技公司與創投團隊彼此有深厚的互信基礎。 　　9.科技公司之經營團隊對投資環境陌生。 　　10.創投團隊具有協助科技公司企業重整成功的經驗。 　　11.創投公司掌握科技公司具影響力的股權及決策權。 　　12.創投公司瞭解新市場趨勢。 　　本研究分析歸納之研究發現如下： 　　一、創業經營互動構面 　　【研究發現一】：科技公司的種子期及創建期，創投公司扮演催生者及創業智囊的角色。 　　【研究發現二】：科技公司的成長期及擴張期，創投公司扮演資源提供者與仲介者的角色。 　　【研究發現三】：科技公司的成熟期，創投公司扮演股票上市推動者角色。 　　【研究發現四】：科技公司的重整期，創投公司扮演企業改造者角色。 　　【研究發現五】：產業組織網絡的綿密度，會影響創投公司之投資品質。 　　【研究發現六】：創投公司的投資金額會影響知識互動之程度。 　　【研究發現七】：僅資金投資的創投公司漸不受科技公司歡迎，具有附加價值的創投公司才有較多空間。 　　二、科技創新互動構面 　　【研究發現八】：創投公司主導資本效率，協助科技公司之技術創新，兩者合力推動經濟發展。 　　【研究發現九】：創新技術透過創業過程取得卓越財務報酬，為科技產業技術成長的動因。 　　【研究發現十】：科技背景的創投公司，較主動推動技術創業，為科技成長做先鋒，財務背景創投公司則傾向於協助經營為主，為科技成長做後援。 　　【研究發現十一】：技術創新的分散性及開放性，促使創投公司的存在與發展。 　　【研究發現十二】：科技知識與經營管理知識的模組化結合，促使新創科技公司與創投公司密切合作。 　　三、知識管理互動構面 　　【研究發現十三】：創投公司的產業網路知識及經營管理知識，對科技公司的協助，優於創投公司之金融資本之效益。 　　【研究發現十四】：產業成熟度越低，創投公司與科技公司之知識互動越緊密。 　　【研究發現十五】：技術導向的技術領先公司，與創投公司之知識互動程度越低。 / The objectives of this thesis intend to explore the knowledge interactive relationship between the venture capitalist and technology industries as well as the key success factors (KSFs) to initiate the interactive basis. Based on the knowledge interactive relationship, this study presents : the roles and functions of the venture capitalist during different business stages, the added-value that the venture capitalist provided, the key factors influencing the interactive relationship, and the changes in technology and innovation as influenced by the venture capitalist. 　　The key success factors initiating the interactive relationship between the venture capitalist and technology industries are the technology company's demand in knowledge and resources as well as the knowledge and resources that the venture capitalist can provided. 　　This study was conducted by using case study methodology covering four samples of high-tech companies and two venture capitalists. The results of this study are as follows: 　　1. During the seed and start-up stages of technological companies, the venture capitalist acts as the promoter and start-up consultant. 　　2. During the growth and development stages of technological companies, the venture capitalist acts as the resource-provider and coordinator. 　　3. During the late stage of technological companies, the venture capitalist acts as the IPO promoter. 　　4. During the re-orgnization stage of technological companies, the venture capitalist acts as the re-structurer. 　　5. The industrial network of the venture capitalist will influence the company's investment performance. 　　6. The investment amount will influence the knowledge interactive intensive of the venture capitalist. 　　7. The venture capitalist only affords capital but without knowledge have been worked difficult. Only the venture capitalists with smart-money and value-added will have development space. 　　8. The venture capitalist leads the capital efficiency and the technical companies lead the technology innovation. Both of them promote the development of economics. 　　9. Start-up new companies with innovative technologies to purchase excellent financial reward are the motive factor of technology development. 　　10. The venture capitalists with technical background will more actively promote the innovative technologies start-up. The venture capitalists with financial background will focus on the management of the investee. 　　11. The diversity of technology innovation builds up the development space basis of the venture capitalists. 　　12. The modularization of the technical innovation and business management is the key factor in pushing the knowledge interactive between technical companies and venture capitalists. 　　13. The industrial network and management knowledge contributions of the venture capitalists are more than the contributions of the capital benefit. 　　14. The more amorphous of the industry, the more knowledge interactive activities between the technical companies and the venture capitalists. 　　15. The more technical-oriented companies, the less knowledge interactive activities between the technical companies and the venture capitalists.

The field buses, and particularly the ‘PROFIBUS’, are currently widely used in automation systems, with the intention to automate industrial applications. It is of the utmost importance that one should understand how these systems operate, because failure to understand may result in improper applications, which can ultimately lead to intense network problems and, consequently, lead to potential catastrophic failures in industrial equipment, as well as compromising the health and safety of the people. This research was the performance evaluation of SAMANCOR PROFIBUS network that controls the chrome manufacturing plant. The problem with the network was that it was failing intermittently. These network failures resulted in loss of production, loss of throughput, compromised quality, downtime due to reworks, high costs in energy used to rework, and equipment damage or failure. One of the OBJECTIVES of the research was to carry out a performance evaluation of the PROFIBUS network in terms of the possible electromagnetic interference (EMI) within the plant’s PLC network. This topic emanated from the network service providers that kept insisting that the network was unstable, due to possible electromagnetic interference caused by possible high voltage cables running next to the plant network cables. This assumption was without fact, and hence the research was conducted. The QUANTITATIVE research method was used to conduct the research, where simulation of the plant network, using external parameters, were used to carry out the research. Furthermore, experiments were conducted and the physical measurements were performed on the network, where parameters derived from these measurements were used to compare the two networks. In essence, the network was tested under known configurations. The manner in which the network was simulated was that of stepping up the electrical current from the external device, and recording the response of the network. A stand-alone network rig was built and used to carry out the tests, and the results were compared with those obtained from the plant network. / Electrical and Mining Engineering / M. Tech. (Electrical Engineering)