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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Process optimization of thermal modification of Chilean Eucalyptus nitens plantation wood

Wentzel, Maximilian 29 January 2019 (has links)
No description available.
32

Development of new software tools for phase equilibria modelling of open systems / Développement de nouveaux outils informatiques permettant de modéliser les équilibres de phases en système ouvert

Mayne, Matthew 03 December 2018 (has links)
Le métamorphisme est un phénomène majeur affectant la distribution des phases minérales au sein de la croûte continentale et participant à sa stabilisation. L’étude des processus métamorphiques est donc essentielle pour comprendre la formation et l’évolution de la Terre. Ces processus exercent un contrôle sur le potentiel de préservation des roches à sa surface et nous renseignent entre autres sur les conditions de pression–température régnant en profondeur. Ils contrôlent également la production et le stockage de fluides au sein de la croûte ce qui influence les cycles géochimiques au sein de la lithosphère, de l’hydrosphère et de l’atmosphère et a, de fait, des implications importantes sur le climat et l’apparition de la vie sur Terre. La principale source de variabilité au sein de ces systèmes correspond à des changements de composition chimique résultant eux-mêmes de transferts de matière. Les techniques modernes de modélisation quantitative des équilibres de phases permettent de calculer l’assemblage minéralogique stable au sein d’un système à l’équilibre pour lequel les paramètres pression, température et composition chimique sont connus. Ceci étant, les programmes informatiques actuels ne possèdent que de fonctionnalités limitées pour modéliser et appréhender les conséquences de changements de composition chimique du système au cours du métamorphisme. Un nouvel outil informatique (Rcrust) a été développé pour permettre de calculer l’assemblage minéralogique stable dans un système soumis à des variations de composition lors de son évolution dans l’espace multidimensionnel pression–température–composition chimique. / The investigation of metamorphic processes in the Earth’s crust is integral to understanding the formation and evolution of the Earth. These processes control the preservation potential of the geochronological rock record and give us insight into, amongst others, the pressure and temperature conditions of the Earth’s interior. Further, they control fluid generation and consumption within the crust which influences global geochemical cycles within the lithosphere, hydrosphere and atmosphere. This has important implications on the global climate and the creation of conditions conducive to life. The dominant mechanism of change both within and between these systems are compositional changes invoked by processes of mass transfer. Modern quantitative phase equilibrium modelling allows the calculation of the stable phase assemblage of a rock system at equilibrium given its pressure, temperature and bulk chemical composition. However, current software programs have limited functionalities for the sophisticated handling of a changing bulk composition. A new software tool (Rcrust) has been developed that allows the modelling of points in pressure–temperature–bulk composition space in which bulk compositional changes can be passed between points as the system evolves.
33

開放系統發展策略與管理績效關係之研究 / The Study on the Relationship between Open System Development Strategy and Management Performance

簡燦重, Jian, J. S. Jason Unknown Date (has links)
開放系統已蔚為資訊技術的主流,但目前關於開放系統之研究多半屬於技術層面之探討,缺乏從管理面探討開放系統之研究。因此,本研究旨在進行有系統的探討國內企業對開放系統發展策略之採行措施的調查分析,以及所產生的管理績效是否達到預期的水準。探討「發展策略」與「管理績效」二者之間的關係,並進一步檢視發展策略的不同及現存的「技術環境」、內部的「組織特性」的差異,對其管理績效的影響關係。 本研究屬於實證性研究(Empirical Research),針對國內大型企業的資訊部門主管進行問卷調查,根據76份有效問卷之資料統計分析、檢定,獲致下列研究結論: 一、 對國內企業而言,受訪者認為開放系統發展策略的重要性因素,包括妥善規劃發展準則、引用正規的發展方法、運用專案管理技術、標準化的遵守、應用元件的整合性等規劃措施,以及強化目標平台能力、風險低的實施策略、資訊教育訓練與推廣、安裝及測試完整性、適當處置政治因素等實踐措施。 二、 本研究將國內企業之開放系統發展策略區分為應用者、業務者、功能者三個策略群,採應用策略者一般來說,有較佳的發展成本、資訊提供、使用者效果、系統整合之管理績效,但僅在系統整合上有顯著差異。 三、 技術環境的影響關係上,在技術產品效用性高及標準化需求的遵守性高的情況下,發展策略採行應用策略者並取得良好的配合,則有較佳的系統整合績效產生。 四、 組織特性的影響關係上,在組織結構為有機式之情況下,發展策略採應用策略者,有較高的系統整合績效。在資訊部門員工人數少時,發展策略採功能策略者,有較佳的使用者效果績效。
34

開放式架構產業的產品創新研究--以華碩 Eee PC及宏達電 Smart Phone 為例 / A study of product innovation in open system industrial--cases of ASUS Eee PC & HTC smart phone

許先越, Hsu ,Hsien Yueh Unknown Date (has links)
台灣的產業發展一向以製造業為主,但現在則普遍認為服務業才是我們未來應該努力的方向,但是如何在這個轉型的過程當中,利用我們原本的製造相關能力,來加值服務相關的產業,是一個重要的議題。 在開放式架構產業之中,許多新產品的開發,已經不能以過去傳統技術導向的思維進行。因此希望透過實務與理論上的結合,選定以華碩Eee PC以及HTC做為討論個案,進一步的探討「產品創新」之相關議題。 因此,本研究之主要研究問題為: 一、 身處開放性架構產業(Open System Industrial)的公司在進行「產品創新」時的相關內部條件為何? 二、 開放性架構產業(Open System Industrial)中的產品如何進行「產品創新」活動? 三、 開放性架構產業(Open System Industrial)中的「產品創新」與產業內「基石公司(Keystone Company)的關係」之影響。 四、 開放性架構產業(Open System Industrial)中,「產品創新」要如何提高競爭者之進入障礙,以避免競爭者快速跟進、抄襲及模仿。 本研究以Brown(2010)所提出的成功構想的三大準則:技術可行性、商業存續性、客戶需求性,以及本研究所提出之「與基石公司關係」構面,進行開放性架構產業之產品創新議題之探討。 透過理論以及實務的互相印證,本研究歸納出六點主要研究發現,分別為: 一、 Open System Industrial 的產品創新可以著重在以使用者為中心及如何提供客戶最佳的使用者經驗這一部份最容易成功。 二、 深厚的技術基礎是支撐產品創新的重要關鍵。 三、 建構一個組織,讓內部每個部門都有Design Thinking 的想法會是未來產品創新成功的關鍵。 四、 產品創新不應該只侷限於產品本身,而是應該延伸到整體的使用經驗及提供完整的解決方案,因此除產品本身之外可能包括服務、內容等相關的議題。 五、 在Open System Industrial的產業中要做產品創新,與Keystone Company 息息相關,務必尋求基石公司的支持,最底限要取得他們的諒解,如果能合作開發會是最佳狀況,任何違反基石公司利益的動作務必三思而後行。 六、 在新產品開發的過程當中如果有發現任何可以差異化的部份,務必立刻申請專利保護,如果沒有辦法申請專利,最底限度要與技術提供者盡量爭取時間差,創造最大的時間價值。 / In the past, the development of Taiwan industry was emphasized on the Manufacturing. In recent years, it’s generally agreed that the Services is the new way of the Taiwan industry. In the industrial restructuring process, using the manufacturing ability to value-adding the related industries is the important issue. In the open system industry, we cannot use the Technology-oriented method to arrange the new product development issues. In order to discuss the “Product Innovation” issue, the study chooses two successful product innovation cases. By discussing the cases of ASUS Eee PC and HTC, we expect to find out answers of the following questions: 1. What are the internal conditions of the firm to carry out the product innovation when the firm belongs to the open system industry? 2. How does the open system industrial firm’s product carrying out the product innovation issue? 3. How does the Keystone Company affect the open system industrial firm’s product innovation issue? 4. How to create the entry barriers to prevent the plagiarism of competitors when the firm belongs to the open system industry? The study adhering to the three criteria for successful ideas (Brown, 2010), which are Feasibility, Viability and Desirability. The criteria are critical to the Design Thinking. Besides, the study proposed the fourth dimension of the criteria for successful ideas, and it’s “The Relationship with the Keystone Company.” Six main contributions: 1. The product innovation in the open system industry should focus on providing the best User Experience. 2. The strong technology ability is the key point of the product innovation. 3. To build a Design Thinking organization is the key point of the future product innovation. 4. The product innovation shouldn’t limit to the product itself, and it should extend to the overall User Experience and Total Solution. So the product innovation should include the product, service and other contents. 5. The Keystone Company plays a pivotal role in the product innovation issue. The firm of the open system industry should acquire the supporting from the Keystone Company. It’s best to cooperate with the Keystone Company. 6. If there’s any chance to make differentiation, the firm should apply for patent protection immediately. If the firm cannot apply for patent protection, the firm should strive for the time difference to maximize time value.
35

Étude de la topologie d’un système tripartite ; Analyse du modèle de Su-Schrieffer-Heeger couplé à des chaînes semi-infinies non dimérisées

Bissonnette, Alexei 04 1900 (has links)
Nous considérons une chaîne de Su-Schrieffer-Heeger (SSH) à laquelle nous attachons une chaîne semi-infinie non dimérisée aux deux extrémités. Nous étudions l’effet d’un tel couplage sur les propriétés du modèle de SSH. En particulier, la représentation d’un tel système infini sous forme de système effectif fini nous permet d’examiner ses états de surface topologiques. Nous montrons que, comme ce à quoi on s’attendrait, les états de surface initiaux évoluent à mesure que le couplage entre les systèmes augmente. Alors que ce couplage augmente, deux phénomènes sont observés: d’un côté, ces états de surface disparaissent progressivement, et de l’autre côté, de nouveaux états de surface émergent. Ces nouveaux états, que nous appelons états fantômes, sont aussi des états de basse énergie. Une particularité surprenante de ceux-ci est qu’ils sont localisés sur une nouvelle interface: celle-ci est passée du premier (et dernier) site au deuxième (et avant-dernier) site, ce qui suggère que la topologie du système est fortement influencée par les chaînes semi-infinies. La topologie du système tripartite peut être classifiée selon trois régimes. Pour le régime de faible couplage, le système est dans une phase topologique bien définie; pour de grands couplages, il est dans sa phase opposée; pour le régime intermédiaire, sa nature topologique n’est pas encore bien comprise. / We consider a Su-Schrieffer-Heeger (SSH) chain to which we attach a semi-infinite undimerized chain (lead) to both ends. We study the effect of the openness of the SSH model on its properties. In particular, an accurate representation of the infinite system using an effective Hamiltonian allows us to examine its topological edge states. We show that, as one would expect, the initial edge states evolve as the coupling between the systems is increased. As this coupling grows, these states slowly vanish, while a new type of edge states emerge. These new states, which we refer to as ghost states, are also low-energy states. A surprising property of these states is that they are localized on a new interface: the interface has moved from the first (and last) site to the second (and second to last) site. This suggests that the topology of the system is strongly affected by the leads, with three regimes of behaviour. For very small coupling the system is in a well-defined topological phase; for very large coupling it is in the opposite phase; in the intermediate region, its topological nature is yet to be understood.
36

SALINE ADAPTATION OF THE MICROALGA Scenedesmus dimorphus FROM FRESH WATER TO BRACKISH WATER

Gigante, Bethany Marie 24 October 2013 (has links)
No description available.
37

Impactos das cláusulas gerais sobre o regime jurídico societário brasileiro: boa fé e função social no contrato de sociedade

Heinemann Filho, André Nicolau 07 May 2010 (has links)
Made available in DSpace on 2016-04-26T20:30:18Z (GMT). No. of bitstreams: 1 Andre Nicolau Heinemann Filho.pdf: 1026191 bytes, checksum: 7598b6792f97c276db3c66889574a2f8 (MD5) Previous issue date: 2010-05-07 / This dissertation deals with the impact of general clauses on the Company Law organization in Welfare State, with emphasis to the social function and good faith, analyzing them from the Federal Constitution of 1988 by a semi-open system of Private Law, with the consequent examination of the statics and dynamics of the standardized pattern related to legal institutes which regulate contracts Brazilian companies contracts / Esta dissertação versa sobre o impacto das cláusulas gerais sobre o regime jurídico societário no direito pátrio, com ênfase para a função social e boa-fé, analisando-as a partir da opção da Constituição Federal de 1988 por um sistema semi-aberto de Direito Privado, com o conseqüente exame da estática e dinâmica daquele padrão normativo afeto aos institutos jurídicos regulamentadores dos contratos de sociedades brasileiras
38

Disruptive Transformations in Health Care: Technological Innovation and the Acute Care General Hospital

Lucas, D. Pulane 24 April 2013 (has links)
Advances in medical technology have altered the need for certain types of surgery to be performed in traditional inpatient hospital settings. Less invasive surgical procedures allow a growing number of medical treatments to take place on an outpatient basis. Hospitals face growing competition from ambulatory surgery centers (ASCs). The competitive threats posed by ASCs are important, given that inpatient surgery has been the cornerstone of hospital services for over a century. Additional research is needed to understand how surgical volume shifts between and within acute care general hospitals (ACGHs) and ASCs. This study investigates how medical technology within the hospital industry is changing medical services delivery. The main purposes of this study are to (1) test Clayton M. Christensen’s theory of disruptive innovation in health care, and (2) examine the effects of disruptive innovation on appendectomy, cholecystectomy, and bariatric surgery (ACBS) utilization. Disruptive innovation theory contends that advanced technology combined with innovative business models—located outside of traditional product markets or delivery systems—will produce simplified, quality products and services at lower costs with broader accessibility. Consequently, new markets will emerge, and conventional industry leaders will experience a loss of market share to “non-traditional” new entrants into the marketplace. The underlying assumption of this work is that ASCs (innovative business models) have adopted laparoscopy (innovative technology) and their unification has initiated disruptive innovation within the hospital industry. The disruptive effects have spawned shifts in surgical volumes from open to laparoscopic procedures, from inpatient to ambulatory settings, and from hospitals to ASCs. The research hypothesizes that: (1) there will be larger increases in the percentage of laparoscopic ACBS performed than open ACBS procedures; (2) ambulatory ACBS will experience larger percent increases than inpatient ACBS procedures; and (3) ASCs will experience larger percent increases than ACGHs. The study tracks the utilization of open, laparoscopic, inpatient and ambulatory ACBS. The research questions that guide the inquiry are: 1. How has ACBS utilization changed over this time? 2. Do ACGHs and ASCs differ in the utilization of ACBS? 3. How do states differ in the utilization of ACBS? 4. Do study findings support disruptive innovation theory in the hospital industry? The quantitative study employs a panel design using hospital discharge data from 2004 and 2009. The unit of analysis is the facility. The sampling frame is comprised of ACGHs and ASCs in Florida and Wisconsin. The study employs exploratory and confirmatory data analysis. This work finds that disruptive innovation theory is an effective model for assessing the hospital industry. The model provides a useful framework for analyzing the interplay between ACGHs and ASCs. While study findings did not support the stated hypotheses, the impact of government interventions into the competitive marketplace supports the claims of disruptive innovation theory. Regulations that intervened in the hospital industry facilitated interactions between ASCs and ACGHs, reducing the number of ASCs performing ACBS and altering the trajectory of ACBS volume by shifting surgeries from ASCs to ACGHs.

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