本文探討景氣因素、研發外溢效果及技術知識特質對IC設計業研發支出遞延效應之影響。本研究主要採用Lev and Sougiannis (1996)所發展之研發支出遞延效應實證模型，以國內IC設計業上市櫃公司為對象，透過分析產業特性，區分為多應用性IC設計群組及單應用性IC之資訊、通訊及消費性群組，並探討其研發支出遞延效應。研究發現如下： 一、在研發支出遞延效應中，IC設計業受景氣之影響僅限於當期之研發支出；就研發支出效益受影響程度上，IC設計業亦低於其他IC產業。此結果顯示，IC設計業由於具備產品多元化和應用多元等利基市場特性，且在國內是屬於成長型產業，故景氣影響程度不如其他下游產業來的大。 二、多應用性IC設計公司之研發支出所創造之未來效益，比單應用性IC設計公司高。多應用性IC設計公司因為受到研發外溢效果之影響，其當期及遞延一期之研發支出，會比單應用性IC設計公司創造更高之效益。此結果顯示，多應用性IC設計公司投入於不同領域產品之研發支出，存在類似產業內外溢效果，因此亦加強研發支出對未來效益貢獻之程度。 三、資訊類單應用性IC設計公司之研發支出，對未來所創造之效益金額及持續年限，均未優於通訊類及消費類單應用性IC公司。本研究發現，技術路徑相依度及技術變動程度兩種技術知識特質，並不能完全解釋單應用性不同群組之研發支出所創造未來效益的程度，而必須同時考量下游應用市場之目前狀況及未來潛力，才能對其研發支出遞延效應做出更正確之推論。 / This thesis analyzes three R&D performance issues of the IC design firms in Taiwan. First, it addresses the effect of the fluctuating economic cycle in the semiconductor sector on the R&D performance of design and non-design firms in the IC industry. Secondly, this study examines the R&D spillover effect on the R&D performance of the multifunctional and single-functional groups of IC design firms. Finally, this study discusses how technological knowledge (path independence and complexity) influences the R&D performance of the three subgroups (computer, communication, and consumer) of single-functional IC design firms. Three major findings of the study are as follows: 1.The fluctuating economic cycle in the semiconductor sector has less influence on the R&D performance of the IC design firms than that of the IC non-design firms. The fluctuation affects the R&D expenditure of IC design firms only in the current year, but that effect on the IC non-design firms exist in the current year and also the following year. The R&D performance of IC design firms is also less influenced. 2.The multifunctional IC design firms generate more benefit from R&D expenditure than single-functional ones, suggesting that the former group has a stronger R&D spillover effect. 3.Although the computer subgroup of IC design firms possesses high technological path dependence and low technological complexity, its R&D performance is not better than the other subgroups. This finding suggests that technological path dependence and complexity do not fully explain the difference in R&D performance among the three subgroups of single-functional IC design firms.

Les réglementations sur le recyclage des produits, mais aussi le développement de l‘écoconception, obligent les industriels à rechercher des solutions de recyclage pour leurs produits en fin de vie. Les préoccupations environnementales croissantes dans l’industrie créent de nouvelles opportunités d’affaires et nécessitent des changements d’organisation pour accompagner la transition vers des activités industrielles plus durables. Une activité industrielle de recyclage de matières issues de la fin de vie d’un produit, se déroule idéalement avec la participation de différents partenaires industriels dans le cadre d’un projet collaboratif. Cela permet de développer une nouvelle supply chain de recyclage et de concevoir un nouveau produit, fabriqué grâce à cette supply chain. Les projets collaboratifs de R&D permettent de rassembler des compétences complémentaires dans le but de proposer des solutions pour accroitre le taux de recyclage d’une matière dans le domaine considéré. Aujourd’hui, les expériences de projets collaboratifs existent créant de nouvelles opportunités de marché dans l’industrie du recyclage. Cependant, nous observons qu’il n’existe pas de méthode opérationnelle permettant de guider les industriels dans la définition d’un projet collaboratif de recyclage. De plus, la sélection des partenaires pour de tels projets est une réelle difficulté pour les industriels. En effet, les valeurs apportées par les partenaires créent l’intérêt du projet et favorise le succès de la collaboration. Cependant, nous constatons qu’il n’existe pas de méthode dans le cadre du recyclage industriel pour faire un choix efficace de partenaires de R&D sur un projet collaboratif. Une revue de la littérature est présentée, pour connaitre l’état de l’art industriel et scientifique, avec un éclairage sur les meilleures pratiques existantes de façon à les prendre en compte et les intégrer, afin de proposer une contribution originale. A partir de cette revue de l’état de l’art, nous mettons en évidence un manque de méthode associant les organisations de projets collaboratifs R&D et le développement de supply chain de recyclage ; cela contribue à donner une posture originale à notre recherche. Notre contribution est de proposer une combinaison de méthodes pour accompagner les industriels dans la définition d’un projet collaboratif pour la mise en place d’une activité de recyclage. • La première méthode facilite la compréhension des mécanismes d’une industrie émergeante du recyclage, agissant simultanément sur l’impact environnemental, en recyclant les produits en fin de vie, et sur la compétitivité d’une entreprise, par sa différenciation vers de nouvelles activités industrielles. • La deuxième méthode développée est une aide pour le chef de projet R&D lors de la définition d’un « projet collaboratif de recyclage », avec la spécification du marché, du produit recyclé et de la structure projetée de la filière de recyclage. • Nous développons également la question de la sélection des partenaires d’un projet collaboratif de R&D dans le domaine du recyclage, en proposant une méthode d’évaluation ainsi que la définition de critères adaptés à ce nouveau contexte. Sur ce point, nous utilisons les techniques d’aide à la décision multicritères que nous combinons, afin d’aider les industriels dans ce processus de sélection. Une étude de cas est développée concernant l’industrie française du recyclage textile, ainsi qu’un projet de R&D collaboratif impliquant l’utilisation de matières premières recyclables provenant des véhicules hors d’usage et de vêtements fin de vie, pour l’éco-conception d’un produit nouveau. L’application de la combinaison des méthodes proposées, conduites dans le cadre d’un projet de recyclage spécifique, permet de discuter les premiers résultats et d’ouvrir ce sujet sur des perspectives de recherche à venir / Regulations on product recycling rates, but also growing consciousness on the importance of eco-design, enforce industrials to seek for solutions to recycle their products at their end of life. Growing environmental concerns in the industry allow new business opportunities and require organizational changes to support transition toward more sustainable industrial activities. Building a recycling industrial activity for materials coming from end of life products is a great challenge that requires an analysis of the opportunities and threats and the added value of industrial partners, in the scope of a collaborative project (or a collaborative network). This kind of projects aims at designing a new recycling supply chain and to design a new product that will be manufactured by this supply chain. R&D collaborative projects enable to gather complementary competencies in order to propose solutions to increase the recycling rate on the territory. Nowadays, experiences such as collaborative projects are witnessed, giving various new business possibilities in the recycling industry. However, a literature review we have performed points out that there is no existing method permitting to analyze the opportunity of a recycling value chain and to guide industrials in the definition of a “recycling collaborative project”. Moreover, for such projects, the selection of the partners is of great issue for the industrials. Indeed, the values brought by the partners make the interest of the project and favor the success of the collaboration. However, there is no existing method to choose R&D collaborative project partners efficiently in the scope of the recycling industry. A literature review presents the industrial and scientific state of the art and highlights the existing best practices in order to take them into account for the proposal of an original contribution. From the state of the art we can highlight a lack of methods that would associate R&D collaborative project organizations with the development of recycling supply chains; this positioning contributes to the originality of the work realized. Our contribution is to propose three methods to help industrials to define a collaborative project for the design and building of a new recycling supply chain: • The first method we propose facilitates the understanding of a recycling emerging industry mechanisms, act simultaneously on the environmental impact by recycling end of life products and on the business competitiveness by differentiation in new industrial activities. • The second method we developed must helps recycling R&D project managers to define a “recycling collaborative project”, the target market, the recycled product that will be manufactured and the potential structure of the future supply chain. • The third method is related to the question of partner selection with the proposal of a ranking method and the definitions of adapted criteria for such selections. In this respect we used Multi-Criteria Decision Making (MCDM) techniques to help industrials in this selection process. A case study is developed on the French textile recycling industry and a R&D collaborative project that introduces recyclable raw material from end of life vehicles and garments, for the development of a new product. An application of our research is conducted on a specific recycling collaborative project in order to discuss the initial results, and perspectives are highlighted for further research investigations

Using certain practices for managing projects is a critical factor in successfully executing projects. For a firm where there are few set practices by the organization for managing projects, project managers have to create their own practices with varying degrees of success. Experienced project managers often have had plenty of time to develop fully functioning practices whereas new project managers struggle to find any practice to use. This thesis examines how learning from previous projects at Saab Dynamics can improve the project management practices project risk management and intra-project communication. Further, this thesis proposes how Saab Dynamics can improve continuous risk management and intra-project communication.  A qualitative approach is utilized for this thesis where the data is collected from five separate interviews with project managers from various development projects at Saab Dynamics. The result from the interviews partly contains successful practices used by project managers, such as how to integrate sub-projects or how to manage risks continuously, but also highlights issues for the projects. These findings are analyzed by applying relevant research from the fields of learning in project-based organizations, project risk management and intra-project communication which resulted in a discussion and conclusion providing various recommendations for Saab Dynamics to improve each project management practice.  Key findings include that functions are needed to facilitate learning and how post-project reviews need to be structured to transfer tacit knowledge into explicit knowledge, where focus needs to be on documenting using stories. Further, this thesis utilizes a model for risk maturity with five steps where only the top two allow for continuous risk management. To progress to these steps the importance of building a risk culture is recognized where the issue is in communicating the set process of risk management to project managers. Here, having a risk manager is identified as important. Intra-project communication focuses on the areas of information distribution, sub-project integration and communication planning. It was found that the information distribution needs to be balanced between forced and voluntary communication. Moreover, five mechanisms for integration are covered where some are more important for complex projects and some during high uncertainty. Lastly, a model for a communication plan is presented.

Esse trabalho teve como objetivo contribuir para o debate sobre a importância das políticas de incentivo à inovação no Brasil. Os resultados esperados do uso que as empresas fizeram dos diferentes tipos de instrumentos sobre os gastos em pesquisa e desenvolvimento (P&D) foram avaliados pelo método de diferenças em diferenças. O método permitiu obter as diferenças de gastos entre empresas beneficiárias de instrumentos e as não-beneficiárias em três períodos consecutivos: 2005 em relação à 2003; 2008 em relação à 2005 e de 2011 em relação à 2008. Ao fazer isso, foi possível identificar se tais diferenças foram positivas e significativas, podendo ser atribuídas às influências dos instrumentos. Os instrumentos utilizados foram: incentivos fiscais, Lei de Informática, financiamentos em parcerias, financiamentos sem parcerias e subvenção. E a utilização dos mesmos pelas empresas teve maior relevância no âmbito de diversos programas de apoio à inovação vigentes no país a partir da retomada das políticas industriais e tecnológicas, nos anos 2000. O estudo concluiu que os efeitos positivos e significativos são limitados à determinados grupos tecnológicos e à poucos instrumentos, em geral, de caráter fiscal. Além disso, esses efeitos positivos surgem em apenas um período, sendo que para cada grupo tecnológico foram efetuadas estimativas para três períodos. Também não houve evidências de que os instrumentos financeiros exerçam efeitos significativos sobre as decisões de gastos em pesquisa e desenvolvimento, apesar da maior ênfase dada aos mesmos no período estudado. Os resultados sugerem fraca influência dos mecanismos de apoio à P&D no Brasil sobre o aumento dos gastos privados, apesar dos avanços recentes. / This study aimed to contribute to the debate about the importance of encouraging innovation policies in Brazil. Understanding the role played by public support instruments to research and development activities in relation to private business spending has become fundamental to achieving this end. The expected results of the use that companies made of different types of instruments on spending were evaluated by the method of difference in differences. This allows you to compare, over a certain period of time, the differences in expenses between the companies that made use of any type of instrument and the companies that did not. Thus, the method yielded differences in spending between the beneficiary and nonbeneficiary firms of those instruments of three consecutive periods: 2005 compared to 2003; 2008 compared to 2005 and 2011 compared to 2008. In doing so, it was possible to identify whether these differences were positive and significant and can be attributed to the influence of the instruments. The instruments used were: tax incentives, Information Technology Law, financing partnerships, financing and grants. And their use by companies had most relevance within various programs to support innovation in force in the country from the resumption of industry and technology policy in the 2000s. The study concluded that the positive and significant effects are limited to certain technological groups and the few instruments in general tax character. In addition, these positive effects arise in one period, and for each technology group estimates were made for three periods. There was also no evidence that the financial instruments carry significant effects on spending decisions on research and development, despite the greater emphasis given to them during the study period. The results suggest weak influence of mechanisms to support R&D in Brazil on the rise in private spending, despite progress in recent years.

[...] Le sujet de cette thèse intervient dans le cadre du projet DEFI et vise à caractériser la notion d'Efficience Inventive en Conception afin d'élaborer des moyens de mesure de cette dernière. L’objectif étant à terme d’aboutir à l'adoption d’indicateurs aidant les entreprises à situer leurs capacités inventives en R&D. Par la suite, les entreprises ayant adopté ces indicateurs pourront, le cas échéant, entamer des actions d'évolution de leurs pratiques afin que la valeur de ces indicateurs évolue dans le sens recherché. Aux vues de la diversité des typologies d’entreprises et l’ampleur d’un tel sujet, notre recherche est focalisée sur les projets de conception de produits au sein des départements R&D de l’industrie automobile. Afin de mener cette recherche et définir les indicateurs de l’efficience inventive, nous avons étudié dans un premier temps les critères inhérents à la conception inventive. Selon nos travaux, la mesure de la performance inventive est corrélée à l’efficience inventive et doit considérer son efficacité par des caractéristiques ciblées, l’étude des connaissances impliquées et des ressources consommées. Notre mesure de l’efficience inventive est aussi basée sur l’analyse des flux des connaissances en jeu tout au long du processus d’innovation technologique, et particulièrement dans la phase de pré-développement. Elle analyse la relation entre ce qui est reçu et ce qui est appliqué ou consommé par rapport à l’inventivité. La mesure de l’inventivité est alors basée sur l’évaluation de l’idéalité, la nouveauté et l’utilité de ce qui sort du processus de conception de produit. L’ensemble des méthodes d’évaluation développées dans ce travail pour chaque critère d’inventivité, et l’efficience inventive, sont intégrés dans un système d’évaluation concret nommé IDPMS (Inventive Design Performance Measurement System) destiné à aider les directeurs des projets de la conception de produit et R&D à observer la performance inventive des équipes projet, et tenter d’améliorer les activités inventives. Donc, ce travail se catégorise dans le domain des sciences de l’ingénieur. Depuis plus de deux décennies, notre laboratoire (le LGéCo) travaille à la construction, d’abord théorique, puis déclinée en méthodes et outils, de nouvelles approches destinées à accompagner les mutations industrielles de l’ère de la qualité vers l’ère de l’innovation. A cet égard, cette thèse fournira un chaînon manquant : celui qui concerne l’évaluation, et la mesure de ce qui caractérise l’amont de l'innovation afin d’aider les entreprises à entrer, par rapport à ces dernières, en logique de performance. / [...] This thesis was defined in the DEFI project to characterize the notion of efficiency in Inventive Design, and develop the metrics of inventive-design. The objective of this proposal is to define inventive performance indicators to enhance the creative capacity in the automotive industry. The research is focused on the NPD projects of R&D department, which are known as the responsible of technological evolutions. In this respect, the main elements of design performance, and the main criteria of inventiveness are studied and merged together. The inventive performance of a R&D team is concerned with the efficiency of their activities to create inventive designs when they apply existing knowledge, and/or use creative resources. This analyzes the relationship between what is received and what is applied or consumed to achieve higher inventiveness degree. The measures of inventiveness are based on the evaluation of novelty, resourcefulness, and usefulness of what comes out from design activities. All the evaluation methods developed in this work are integrated into a concrete system as IDPMS (Inventive Design Performance Measurement System), and an initial version of the IDPMS application is developed, by which R&D and project managers can observe the inventive performance of their NPD projects. So this work is categorized in Engineering Science for specifying performance indicators of inventive design activities. In recent years, our laboratory (LGeCo) focused on developing theoretical methods, then appropriate tools to accompany the industrial changes from the era of quality to the era of innovation. In this regard, this thesis provides the missing link of this effort by evaluating the main characteristics of inventions in engineering level to help companies enter into a logic performance along their innovation projects.

The founding documents for a new, democratic South Africa adopted a more inclusive and people-driven approach to innovation. The literature and policy analysis reveals a „shift‟ away from this approach to a more market-driven, exclusivist approach to innovation. R&D (research and development) and technology-driven innovation had been institutionalised at the expense of social, cultural and indigenous innovations. This „shift‟ limits the potential of innovation to benefit a wider segment of society. The absence of a „model‟ of innovation that exploits the strengths of all forms of innovation runs the risk of defeating the normative intentions of the founding innovation policies of the new, post-Apartheid and democratic South Africa. The OECD, from which South Africa „inherited‟ its notion of innovation, acknowledges the shortcomings of the technological innovation and calls for a conceptual framework that will address the shortcomings of the dominant, exclusivist notion of innovation. This inquiry was conducted to investigate an appropriate conceptual framework of innovation that would contribute towards achieving normative policy intentions of post-Apartheid South Africa. It employed a grounded theory design that used semi-structured interviews, focus group discussions, document analysis, observations and cooperative inquiry. The data analysed suggest the following propositions: 1. Thesis 1: Innovation is constrained by the dominant science and technology paradigm. 2. Thesis 2: Inclusive and integrative innovation cannot exist within an exclusivist innovation paradigm. 3. Thesis 3: Transforming an exclusivist paradigm into an inclusivist paradigm requires change at constitutive level and not just at regulatory level.4. Thesis 4: Synthesising an inclusive and integrative innovation requires creativity, open dialogue and imagination. Against the above propositions, this thesis recommends a conceptual framework that is underpinned by an inclusive and integrative paradigm. Such a framework proposes transformative actions that have potential to achieve normative policy intentions of post-Apartheid South Africa. Further research into a constitutive design for an inclusive and integrative innovation policies and practices is recommended. / Educational Studies / D. Ed. (Philosophy of Education)

研發扣抵政策之有效性在過去文獻有著不一致的結果，許多研究者認為可能原因之一即為與兩稅合一的衝突，實施兩稅合一之後，在有限的資金之下將增加公司發放股利的誘因；同樣的，在實施研發扣抵後亦將增加公司研發投資的金額，都會影響彼此的政策效果。 　　近年來台灣經歷獎勵投資條例、促進產業升級條例及現在的產業創新條例，其對投資之效果飽受爭論。而我國除採取研發扣抵政策外，亦實施兩稅合一政策以解決重複課稅之問題，因此在台灣兩稅合一與研發扣抵是否會互相衝突會是一項值得探討的議題。 　　本文以 1996 年至 2014 年台灣與 OECD上市公司的非均衡追蹤資料 (Unbalanced panel data) 來進行分析。實證結果指出，同時實施兩稅合一及研發扣抵的國家相較於其他樣本，其股利支付與研發投資之間的關係呈現更為顯著的負相關，代表當同時實施雙重扣抵制度，兩項支出之間的衝突性更為明顯。 　　本文另外也做了台灣與其他國家的比較，實證結果指出，台灣雖實施雙重扣抵制度，但其支出之間的關係，反而呈現較為顯著的正相關。可能的原因即為台灣之研發扣抵相較於兩稅合一，其誘因明顯為大，因此文末亦作了 difference in difference 的敏感度分析，但結果顯示不論是 1998 年兩稅合一或 2010 年產創條例實施後，研發投資與股利支付之間的關係並沒有顯著的改變。 / The effectiveness of R&D tax credit is inconsistent in past literature, and many researchers believe one possible reason is the impact of dividend imputation credit. After imputation credit, it will increase the company’s incentive to pay dividend. Also, after R&D tax credit, it will increase the payment of R&D investment. So both of the policy will affect the effect of each other. In recent years in Taiwan, we experienced Statute for the Encouragement of Investment, Statute for Upgrading Industry and current Statute for Industrial Innovation, and their effect on investment suffered controversy. In Taiwan, we have not only R&D tax credit, but also the implementation of dividend imputation to relieve the problem of double taxation, so it becomes an important issue. This paper examines the unbalanced panel data of Taiwan and OECD from 1996 to 2014. Empirical results indicate that in the context of both R&D tax credit and dividend imputation credit compared to the other sample, the negative correlation is more significant between the dividend payments and R&D investment. It means when we implement both credits, the payments of dividend and R&D conflict more. This paper also examines Taiwan with respect to OECD countries, and the empirical results indicate that although the implementation of both credits, the positive correlation is more significant between the two payments in Taiwan. One possible reason is that the R&D tax credit in Taiwan is obviously more attractive than the dividend imputation credit. Therefore, I also use the sensitive analysis of difference in difference to examine this problem. However, it shows that after the implementation of dividend imputation in 1998 or R&D tax credit of Statute for Upgrading Industry in 2010, the relationship of payments doesn’t differ obviously.

This study explores various drivers of Internet stock prices. This study extends the previous work on Internet stock valuation along two dimensions: (1) the separation of Internet firms into web-related and non-web-related groups. (2) the incorporation of consideration for the effect of Internet shakeout on value drivers identified in this study. The primary findings are as follows. First, this study finds evidence that contradicts the claims made by some analysts that web traffic metrics are no longer important. The findings show that web-traffic remains value-relevant to Internet stock price for the period Oct 1998 to May 2003. Second, this study documents evidence against the “common wisdom”, as represented in the business press, that traditional financial statement information has limited usefulness in pricing of Internet stocks. The variable “revenues” is significantly positively associated with the stock price in the pre- and post-shakeout period for all Internet firms. Third, consistent with prior research on other intangibles-intensive industries, this study finds that, in particular, product development (R&D) appears to be capitalized as assets by investors in their assessment of values of web firms during the testing period, including period subsequent to the industry shakeout in the spring of 2000. This research thus provides preliminary evidence of the value-relevance of R&D expense of the shakeout and maturation of the B2C Internet sector. Fourth, with respect to the inquiry of the potential effect of difference in web-traffic on the pricing of Internet stock, the empirical results demonstrate the importance of this consideration. The findings indicate that raw web-traffic variable is not value-relevant for non-web firms, while it is value-relevant for web firms. Finally, the market condition of Internet stocks appears to be influential in explaining the pricing of Internet share. The empirical result shows that the share prices of Internet stocks are higher before the market correction, when holding other variable as controlled.

本文以一個簡單賽局理論模型為分析依據,探討企業間的自製或是外包策略對整體社會福利的影響。 傳統經濟理論分析告訴我們自製策略可以解決雙重邊際化的問題。但在本文我們舉出一個反例，亦即當存在研發的可能及上下遊市場的研發外溢效果時，垂直整合可能會造成廠商過度研發的情形，最終產生整體社會福利不效益情形。 / In this paper, we set up a game-theoretic model, in which the whole industry is composed of a downstream monopolist and two upstream firms. This paper discusses the major debate in a firm’s market strategy: to make or to buy the components it needs. Traditionally, economic theories told us that vertical integration strategy (make strategy) can solve the problem of double marginalization and hence increase profits as well as social welfare. Nevertheless, this result does not necessarily hold when R&D possibility is introduced. We show that when there is downstream to upstream R&D spillover, vertical integration may result in an over-investment in R&D from the social standpoint. This result may shed some light on the rationale behind recent antitrust rulings.

本研究旨在以Spence和Robbins（1992）工作狂熱建構中的內在驅迫因素和工作樂趣因素為基礎，並加入外在驅迫因素，來探討高科技研發人員過度工作的不同因素對於工作時數以及健康生活工作等層面變項的預測力或關聯性，最後由因素劃分出過度工作者類型，並比較不同類型過度工作者的差異性。本研究採問卷調查法，以249位台灣北部地區的高科技研發人員為樣本以及52位高科技行政人員為工作時數的對照組。研究結果發現：（1）研發人員與全國製造業工作者及高科技行政人員相較下，有顯著的過度工作現象。（2）外在驅迫因素意指源自專業工作環境而迫使個體長時數工作的各影響因素。針對研發人員，包括工作負荷過重、產業特性、組織文化酬賞等外在驅迫因素，以及內在驅迫因素，皆對過度工作具有顯著的預測力。而外在驅迫因素對研發人員過度工作的相對預測力高於內在因素。（3）對於健康生活工作三層面的影響性而言，內在因素中的內在驅迫有廣泛不利於三層面的顯著影響性而屬於健康生活工作的危險因子，內在因素中的工作樂趣則相對地於三層面皆有顯著助益而在三層面居於保護因子的角色；外在驅迫因素中的工作負荷過重，對於生活層面有顯著的不良影響，但對健康和工作沒有顯著影響。（4）辨識出三類型的過度工作研發人員，其中內在驅迫高工作樂趣低的「被驅迫狂」在各層面皆有最不利的行為表現，屬於積極的健康定義下的高危險群，內在驅迫高工作樂趣高的「幹勁狂」則較「被驅迫狂」有顯著較高的生活滿足，內在驅迫普通而工作樂趣高的「幹勁者」雖然長時數工作，但各層面狀況反而有優於全體研發人員平均值的傾向。最後，本研究針對上述研究結果做更深層的探討，並說明在個人層次和組織層次實務上的意涵。 / Two internal factors, “driveness” and “enjoyment of work” from the workaholism model of Spence and Robbins (1992), and “external force” factors were adopted to investigate the phenomenon of excessive work (defined as long hours of working) in the population of high-tech R&D professionals. The purpose of this study is to clarify the effects of these factors on high-tech R&D professionals’ working habits, as well as on their health and life styles. These factors were used to categorize high-tech R&D professionals further. The results showed (1) R&D professionals worked significantly longer hours than high-tech administrative staff and workers in manufacturing industry. (2) “Work overload”, one external force factor, compared to other factors, predicted best to R&D professionals’ hours of working. Moreover, the amount of variance explained by the external force factors was relatively larger than the internal factors. (3) Driveness was constantly found to be a risk factor for one’s holistic health, whereas the enjoyment of work was found to be a protective factor. The third factor, work overload, influenced one’s health only on one’s social life. (4) Three types of overworkers were identified: the nonenthusiastic workaholics (NWs), the enthusiastic workaholics (EWs), and the enthusiasts (Es). Among these overworkers, the NWs acted most consistently with the indicators of unhealthiness, showing that the NWs may be most vulnerable to health complaints, unsatisfied social life, and inefficient work habits. The EWs, though acted similarly as the NWs, were not as extreme as the NWs and had higher life-satisfaction than the NWs. As for Es, who also worked long hours, their health complains were the least of all workers and they had relatively healthy life styles than the other two kinds of workers. Implications of the internal and external factors on the high-tech R&D professionals, as well as the typology of the overworkers, were discussed.