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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.
41

"Prevalência das doenças periodontais em pacientes com doença isquêmica coronariana aterosclerótica, em Hospital Universitário" / Prevalence of periodontal diseases in patients with ischaemic coronary disease in an University Hospital, 2003.

Ana Lucia de Azevedo Barilli 06 February 2003 (has links)
As doenças periodontais (DP) são precedidas em importância apenas pela cárie dentária como problema de saúde bucal coletiva no Brasil. Ambas são doenças infecciosas ainda muito prevalentes, entretanto é dada às DP uma importância questionavelmente secundária, pois não são sistematicamente investigadas e prevenidas em saúde pública. Pelo fato de sua prevalência ser atualmente desconhecida no Brasil, a alta freqüência das formas leves e moderadas das doenças periodontais na população como um todo e de suas formas mais graves em grupos ou indivíduos de risco, dentre estes os portadores de cardiopatias isquêmicas, motivou este estudo no Ambulatório de Cardiopatia Isquêmica do Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, cotejando os resultados com outros obtidos em grupo de pessoas não-cardiopatas atendidas na mesma instituição. Foi investigada a prevalência e gravidade das doenças periodontais, bem como a prevalência de seus fatores de risco, história médica da presença de doenças de interesse à periodontia (diabetes, hipertensão, acidente vascular cerebral) e comportamento relativo à higiene bucal. Dentre as 634 pessoas examinadas na fase de recrutamento dos participantes, 480 foram do grupo de pacientes cardiopatas isquêmicos e 154 de grupo de não-cardiopatas. Foram selecionados respectivamente de cada grupo, 58 e 62 participantes, na faixa etária de 30 a 79 anos, para a investigação periodontal. A média da idade foi de 53 anos em ambos os sexos para os pacientes cardiopatas e de 40 anos nos homens e 37 anos nas mulheres nos pacientes não-cardiopatas. Foram utilizados o Índice Periodontal Comunitário (IPC) e o índice de Perda de Inserção periodontal (PI), ambos recomendados pela OMS (1999). Os resultados mostraram um predomínio de sextantes nos escores indicativos das formas graves da DP entre os pacientes cardiopatas (74,1% contra 20,2%; p < 0,00001). Dentre os pacientes cardiopatas apenas 1,1% dos sextantes exibiram saúde periodontal, contra 32,0% nos pacientes não-cardiopatas (p < 0,00001). No tocante a história pregressa da DP, mensuradas através da perda de inserção, 6,0% dos sextantes não a exibiram entre os pacientes cardiopatas, contra 68,0% dos não-cardiopatas (p < 0,00001). Eram portadores de fatores de retenção de biofilme dental 100,0% dos pacientes cardiopatas e 82,3% dos pacientes não-cardiopatas (p < 0,001). Exigiam tratamento periodontal mais complexo, normalmente praticados por especialistas em periodontia, 94,8% dos pacientes cardiopatas contra 33,9% dos pacientes não-cardiopatas (p < 0,0001). Necessitavam de tratamento de bolsas > 6mm 79,3% dos pacientes cardiopatas contra 9,7% dos pacientes não-cardiopatas (p < 0,0001). Alguns fatores de risco comprovado e/ou provável às DP, foram investigados nos pacientes cardiopatas e pacientes não-cardiopatas: observou-se tabagismo em 10,4% e 33,9% (p < 0,01), respectivamente; alcoolismo em 44,8% e 24,2% (p < 0,02), respectivamente; diabetes em 29,3% e 1,6% (p < 0,0001), respectivamente; hipertensão arterial em 34,5% e 8,1% (p < 0,001), respectivamente. Conclusões: As DP mostraram-se muito prevalentes nos dois grupos estudados, sendo de maior gravidade nos pacientes com cardiopatia isquêmica. A elevada prevalência de fatores de risco às DP aponta para a necessidade de adoção de estratégias de intervenção para minimizá-los. / Periodontal diseases are preceded in importance only by dental caries as oral public health problem in Brazil. Both are infectious diseases and with high prevalences, however, a secondary importance is given to periodontal diseases because they are not routinely investigated and prevented at public health level. Presently its prevalence is not known in the Brazilian population. The high prevalence of mild and moderate forms of periodontal diseases in the general population, and its severe forms in specific groups or in high risk patients, as those with ischaemic coronary diseases, motivated this survey. It was carried out among patients from the Outpatient Clinic of Ischaemic Coronary Disease – Hospital das Clínicas da Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo – and using for comparisons patients from other clinics of the same hospital. The prevalence and severity of periodontal diseases were investigated, as well as the prevalence of their risk factors, medical history of diseases with periodontic interest (diabetes, hypertension, stroke), and behaviour related to oral hygiene. During the recruitment phase, among 634 patients examined, 480 were from the group with cardiopathy and 154 from the group without cardiopathy. From each group were selected, respectively, 58 and 62 participants, aged 30 to 79 years for the periodontal investigation. Mean age was 53 years for both sexes in the group with cardiopathy and 40 years for men and 37 years for women in the group without cardiopathy. The Community Periodontal Index and the Attachment Periodontal Index, both recommended by the World Health Organization (1999), were used. Results showed a predominance of sextants in the scores indicating severe forms of periodontal diseases among patients with cardiopathy (74.1 vs. 20.2%; p< 0.00001). Among patients with cardiopathy, only 1.1% of the sextants showed periodontal health against 32.0% in the other group (p< 0.00001). Previous history of periodontal diseases, measured through lost of insertion, was present in 6.0% of the sextants in patients with cardiopathy and 68.0% in those without cardiopathy (p< 0.0001). All patients with cardiopathy and 82.3% of those without cardiopathy were carriers of retention factors of dental biofilm (p< 0.001). It was found that 94.8% of the patients with cardiopathy against 33.9% of the other group (p< 0.0001) required more complex periodontal treatment, usually performed by periodontal specialists. Treatment of sites &#8805; 6mmm was required by 79.3% of the patients with cardiopathy and by 9.7% from the other group (p< 0.0001). The frequency of confirmed or possible risk factors for periodontal diseases in the groups with and without cardiopathy were, respectively: smoking – 10.4 and 33.9% (p< 0.001); alcoholism – 44.8 and 24.2% (p< 0.02); diabetes – 29.3 and 1.6% (p< 0.0001); hypertension – 34.5 and 8.1% (p< 0.001). Conclusions: Periodontal diseases were highly prevalent in the two groups studied, but with higher severity among patients with cardiopathy. The high frequency of risk factors for periodontal diseases in both groups appointed to the need of intervention strategies towards these risk factors.
42

Behind the scenes of network marketing : A case study of Tahitian Noni International

Bråneryd, Camilla, Friberg, Tobias January 2008 (has links)
More companies have become aware of the need to find new ways of marketing, and network marketing is an alternative that has had great success. The purpose of this thesis is to identify what measures are used within a network marketing company to encourage the product consultants (PCs) to expand their networks. This study was conducted by interviewing three PCs and the Swedish marketing manager of Tahitian Noni International (TNI). A model is presented to structure the empirical findings, which shows that it is mainly the bonus system that is the catalyst in the organization, but also the company’s educations are of importance.
43

品牌識別系統與品牌形象之研究---以研華科技為例

李幸宜 Unknown Date (has links)
美國每年都有企管顧問公司或是商業雜誌公佈全球最具價值的品牌,例如Interbrand與商業週刊的聯合調查在2004年調查計算各品牌的價值中,可口可樂雄居價值最高的10大全球品牌之首(674億美元),其後是微軟Microsoft(650億美元)、IBM(538億美元)、通用電氣GE(441億美元)、英代爾Intel(335億美元)、迪士尼Disney(271億美元)、麥當勞McDonald(250億美元)、諾基亞Nokia(240億美元)、豐田Toyota(227億美元)以及萬寶路Marlboro(221億美元)。而2004年末2005年初,世界大型企業併購趨熱。甲骨文公司(Oracle) 併購仁科公司(Peoplesoft) 交易總額價值達103億美元、寶潔公司以高達570億美元併購吉列公司和美國西南貝爾通訊公司(SBC)以160億美元收購美國電話電報公司(AT&T)等一系列交易,都充份展現出企業在購併時,品牌價值的重要性。 品牌對於企業而言,不單只是區隔與其他公司的差別,還是一個企業在消費者心中的形象、承諾、品質、經驗的集合體。研華自創立以來便積極朝向自由品牌的建立,所以在今年進入了台灣十大國際品牌,是相當值得雀躍的事。然而,為了讓研華的品牌在未來不只能夠保持前十大,更要在相較於其他品牌的進步更為突出,因此,本研究結合Aaker 與Keller 以及諸位品牌學者提出之架構,試圖釐清分析出在研華科技亮麗的品牌背後,研華採取的品牌識別與品牌打造行銷策略及其所隱含的思維與目的,希望將此經驗以系統性的理論架構做出整理,重新詮釋研華的品牌打造計畫,萃取出品牌經營的關鍵因素與策略,並給予其未來計畫建議。 本研究以研華科技為個案對象,目的共計有以下幾項: 1.釐清研華自我品牌識別(Brand Identity)與顧客對於研華品牌形象(Brand Image)之間的差距,本研究將結合Aaker與Keller等學者之理論加以探討。 2.探討對研華科技品牌打造計畫(Brand Building Program)之內、外部影響因素。 3.透過個案研究的過程,給予研華實質建議,並建立屬於研華的品牌識別系統與品牌打造計畫。 關鍵字: □ 工業電腦 (Industrial PC, IPC) □ 品牌識別 (Brand Identity) □ 品牌形象 (Brand Image) □ 品牌打造計畫 (Brand Building Program)
44

Inter-Process Communication in a Virtualized Environment

Johansson, Filip, Lindström, Christoffer January 2018 (has links)
Selecting the correct inter-process communication method isan important aspect of ensuring effective inter-vm and inter-container process communication. We will conduct a study ofIPC methods which might be useful and fits the Qemu/KVMvirtual machine and Docker container environments, and se-lect those that fit our criteria. After implementing our chosenmethods we will benchmark them in a test suite to find theones with highest performance in terms of speed. Our resultsshow that, at the most common message sizes, Unix DomainSockets work best for containers and Transparent Inter Pro-cess Communication has the best performance between vir-tual machines out of the chosen methods.
45

Utilização das novas tecnologias de informação e comunicação para a aplicação da metodologia “Instrução pelos Colegas” no ensino de física no ensino médio

Rocha, Rodolfo de Souza 13 February 2017 (has links)
Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-05-25T18:37:01Z No. of bitstreams: 1 rodolfodesouzarocha.pdf: 4223860 bytes, checksum: 38085d8d682902fee6ad3e470aad68e2 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-05-26T12:22:14Z (GMT) No. of bitstreams: 1 rodolfodesouzarocha.pdf: 4223860 bytes, checksum: 38085d8d682902fee6ad3e470aad68e2 (MD5) / Made available in DSpace on 2017-05-26T12:22:14Z (GMT). No. of bitstreams: 1 rodolfodesouzarocha.pdf: 4223860 bytes, checksum: 38085d8d682902fee6ad3e470aad68e2 (MD5) Previous issue date: 2017-02-13 / A metodologia Peer Instruction (PI), conhecida no Brasil também como Instrução pelos Colegas (IpC), é uma metodologia de ensino ativo originalmente pensada para salas de aula com um grande número de alunos e que se baseia no aprendizado pela interação entre os estudantes. Esta metodologia exige um estudo prévio dos alunos no tema a ser abordado, para reduzir as aulas expositivas pelo professor. Durante a aula, após uma breve explicação do conteúdo, são apresentadas questões conceituais de múltipla escolha para que os alunos votem na resposta correta, inicialmente sem interação com outros alunos. Dependendo da porcentagem de acertos o professor pode colocar a questão em discussão entre os alunos e realizar uma nova votação. Essa metodologia proporciona uma melhor interação entre os estudantes, onde os estudantes podem explicar os conceitos aprendidos uns para os outros e diminui o tempo de aula expositiva. O processo de votação pode ser feito por placas de votação, também chamados de flashcards, por gestos ou por clickers, que são pontos eletrônicos que armazenam as respostas em um computador de forma automatizada. Apesar da metodologia não exigir o uso de clickers, esse sistema de votação apresenta algumas vantagens em relação aos outros, como por exemplo, ele dificulta o plágio das respostas entre os estudantes durante o processo de votação, a aquisição de dados é mais rápida e facilita o armazenamento de dados para o professor. Contudo, os clickers são dispositivos relativamente caros, o que não corresponde à realidade da maioria das escolas públicas de ensino médio do Brasil. O objetivo desse trabalho foi desenvolver um sistema de votação eletrônico mais barato que os clickers comerciais no qual os alunos utilizam seus dispositivos móveis que possuem acesso à rede Wi-fi como uma alternativa para substituir os clickers. Esse sistema foi desenvolvido em linguagem HTML e PHP e é, basicamente, um website que funciona localmente no computador do professor. Para a sua implementação é necessário um computador, um roteador Wi-fi, que não necessita estar conectado à internet, e os dispositivos dos alunos. O sistema foi implementado na Escola Estadual de Ensino Médio “Monsenhor Miguel de Sanctis”, localizada na cidade de Guaçuí no estado do Espírito Santo, em um total de 155 alunos e foi abordado como tema as Leis de Newton. O sistema funcionou de maneira adequada durante as aulas, criou um ambiente de aula diferenciado e curioso para os alunos e também permitiu o registro das respostas individuais dos alunos em cada questão, permitindo uma análise posterior sobre as questões com maiores índices de erros e acertos, bem como o comportamento dos alunos em termos da participação nas discussões. / The Peer Instruction technique (PI), known in Brazil as “instrodução pelos colegas” (IPC), is an active teaching methodology originally designed for classrooms with a large number of students. It is based on active learning through the interactions among students. This methodology requires a prior study of students in the topic to be addressed in the classroom to reduce the long lectures by the teacher. During class, after a brief explanation of the content, conceptual multiple choice questions are presented to students. After one or two minutes initially without interaction with other students, the students report their answer to the teacher through a voting system. Depending on the percentage of correct answers the teacher can put the question under discussion among the students and hold a new round of voting. This methodology provides a better interaction between students, where students can explain the concepts learned one to the other and reduces the time of lecture. The voting process can be done by voting cards, also called flashcard, gesture or clickers, which are electronic points that store the answers in a computer in an automated fashion. Although the methodology does not require the use of clickers, this voting system has some advantages over other. For example, it minimizes plagiarized responses among students during the voting process, the data acquisition is faster and it facilitates data storage for further analyzes. However, the clickers are relatively expensive devices, which does not correspond to the reality of most public high schools in Brazil. The aim of this study was to develop a cheaper electronic voting system that commercial clickers, which students use their mobile devices with access to the Wi-Fi network as an alternative to replace clickers. This system was developed in HTML and PHP language and is, basically, a website that runs locally on the teacher's computer. For its implementation a computer is required, a Wi-Fi router without connection to the internet, and the students' mobile devices. The system was implemented in school E. E. E. M. "Monsignor Miguel de Sanctis", located in Guaçuí in the state of Espirito Santo, in a total of 155 students. The system worked properly during class, created a distinctive and curious class environment for students and registered individual students’ responses to each question, allowing further analysis of the voting results and the student’s participation during the discussions.
46

台灣POS產業經營模式之比較 / Taiwan POS Business Model Analysis

王興華, Wang, Hsing Hua Unknown Date (has links)
POS端點式收銀機(Point of Sales)產業源自於古老的商業交易行為,廣意的說,從歷史悠久的中國古老的算盤到近代西式的電子計算機,都算是具有簡易計算功能的POS產品,直到數十年前的電子式收銀機(Electronic Cash Register)的問世,促成近期九0年代資訊產業發達後的新產品-端點式收銀機(Point of Sales)的誕生。 台灣POS產業趨隨著台灣近年來資訊產業的蓬勃發展,建構出一個特殊而完整發展的產業市場供應鏈。縱然台灣的資訊產業對全球資訊產業有著顯著的貢獻與不可取代的地位,但也是因為台灣市場過於狹隘,加上國際行銷能力明顯不足的情況之下,造成台灣的資訊產業沉淪為以低毛利的代工族群。相對地透過台灣資訊產業的完整上下游之供應鏈,孕育出一個適合POS產業發展的特殊大環境。全球POS的相關硬體與周邊設備,多數都是台灣的廠商所設計與製造,再以不同的品牌行銷於全球的POS市場。 本論文就台灣工業電腦的產業的現況論述,說明工業電腦諸多不同的應用面,與台灣POS產業的主要經營模式;並以淺顯的方式闡述POS產品間的差異,和台灣POS廠商之所以能於全球POS市場的成功關鍵因素;再進一步論述本論文的研究主旨-台灣POS產業經營模式之比較。從三種完全不同之經營模式(1)代工族群OEM/ODM、(2)白牌/貼牌族群(Private Label)、(3)自我品牌族群(Own Brand),來剖析因經營模式間的差異,而形成企業的核心競爭力、經營策略與組織架構間顯著的差異。 第二階段以個人十多年歷經三個不同經營模式的台灣POS企業,以企業個案訪談的個案研究方法,分別陳述此三種不同經營模式之企業的經營策略,與其現今所遭遇的營運重大問題;接著運用SWOT的方式嘗試剖析此三家企業內部與外部之優劣勢,另以麥可·波特的五力分析方法,來提出台灣POS企業經營模式轉變的建議。 終章依據個人於台灣POS產業服務十多年之實際經驗,大膽提出對全球POS未來產品的發展新趨勢,提出創新的見解與想法,涵蓋POS的硬體未來發展的趨勢、與未來POS軟體的開發應用新趨勢,到POS通路的創新式-服務新模式等見解。期許個人的論文研究能為台灣POS產業,提供一個專業的建議與實質可行之作法,以降低台灣POS企業於產業發展上經營管理之風險,更期盼個人推估未來POS的研究成果,能實際印證在台灣未來POS產業的發展中。 / Point of sale (POS) is the place where a retail transaction is completed. It is the point at which a customer makes a payment to a merchant in exchange for goods or services. At the point of sale the merchant would use any of a range of possible methods to calculate the amount owing - from the ancient Chinese abacus to the modern calculater. POS products are derived from the ancient commercial transaction with different computing functions. The merchant will usually provide hardware and options for use by the customer to make payment - such as POS terminal. The POS can be customized by the retail industry as different industries have different needs. The modern point of sale will also include advanced functionalities to cater to different verticals, such as inventory, CRM, financials, warehousing, and so on, all built into the POS software. A few decades ago, the invention of the Electronic Cash Register, which contributed to the technology industry and gradually developed a new product - endpoints style cash register (Point of Sales) in 90s. Taiwan POS industry trend with the vigorous development of technology industry in recent years, which constructs a special industrial market supply chain. The POS related hardware and peripherals, most of them designed by Taiwan manufacturers but using different brands selling in the international market. Taiwan's technology industry has a significant contribution to the global information industry in an unreplaceable position. Although the Taiwan IT industry bred a special large and suitable environment for the POS industry development in supply chain, due to the local market is narrow, as well as the international marketing capacity is obviously insufficient, resulting in Taiwan's information industry sinking to the low margin OEM working ethnic groups. This thesis discourses on the current situation of Taiwan’s industrial computer applications, the main business model with the POS industry in Taiwan; and elaborates the difference of the POS products, and factors how Taiwan POS manufacturers can be successful. The further exposition is to analyze Taiwan POS industry business model by comparison from three completely different business model (1)OEM / ODM, (2)Private Label (3)Own Brand. The main theme of research is to analyze the difference among business models, and the formation of the enterprise's core competitiveness, significant differences between business strategy and organizational structure. In chapter four, based on personal working experience form three different POS enterprise business, I use case interviews to observe and analyze the different operating modes for case study. This essay illustrates these three different business models by their business strategy, and the major operating issues encountered today. With using the SWOT analysis method to parse the “Strengths, Weaknesses, Opportunities, and Threats” of the three companies internal as well as external level, to reveal both of advantages and disadvantages. The next step is using Michael • Porter's five forces analysis method, proposed recommendations for Taiwan POS business paradigm shift. As to the final chapter, based on over 10 years of personal practical experience in Taiwan POS industry, I boldly propose the development of a new trend in global POS products, insights and ideas to come up with innovative, covering the trend of the future development of POS hardware and software for the future development innovative application. Meanwhile, to explore the insights for the trend of POS channel – a new service mode. My expectation for the thesis is to provide professional advice and substance feasible approaches, so to reduce the risks of operating the POS companies management for the industrial development in Taiwan. I look forward to seeing that the future POS research can actually be confirmed in Taiwan's POS industry future development.
47

Using privacy calculus theory to explore entrepreneurial directions in mobile location-based advertising: Identifying intrusiveness as the critical risk factor

Gutierrez, A., O'Leary, S., Rana, Nripendra P., Dwivedi, Y.K., Calle, T. 25 October 2019 (has links)
Yes / Location-based advertising is an entrepreneurial and innovative means for advertisers to reach out through personalised messages sent directly to mobile phones using their geographic location. The mobile phone users' willingness to disclose their location and other personal information is essential for the successful implementation of mobile location-based advertising (MLBA). Despite the potential enhancement of the user experience through such personalisation and the improved interaction with the marketer, there is an increasing tension between that personalisation and mobile users' concerns about privacy. While the privacy calculus theory (PCT) suggests that consumers make privacy-based decisions by evaluating the benefits any information may bring against the risk of its disclosure, this study examines the specific risks and benefits that influence consumers' acceptance of MLBA. A conceptual model is proposed based on the existing literature and a standardised survey was developed and targeted at individuals with known interests in the subject matter. From these requests, 252 valid responses were received and used to evaluate the key benefits and risks of MLBA from the users' perspectives. While the results confirmed the importance of internet privacy concerns (IPC) as an important determinant, they also indicate that monetary rewards and intrusiveness have a notably stronger impact on acceptance intentions towards MLBA. Intrusiveness is the most important risk factor in determining mobile users' intentions to accept MLBA and therefore establishing effective means of minimising the perceived intrusiveness of MLBA can be expected to have the greatest impact on achieving effective communications with mobile phone users.
48

Beitrag zum Thema VERBUNDWERKSTOFFE - WERKSTOFFVERBUNDE / Contribution on the topic COMPOSITE MATERIALS - MATERIAL COMPOUNDS : Status quo and research approaches

Nestler, Daisy Julia 15 April 2014 (has links) (PDF)
Vielschichtige Eigenschaftsprofile benötigen zunehmend moderne Verbundwerkstoffe und Werkstoffverbunde einschließlich der raschen Entfaltung neuer Fertigungstechnologien, da der monolithische Werkstoff bzw. ein einziger Werkstoff den heutigen komplexen Anforderungen nicht mehr genügen kann. Zukünftige Werkstoffsysteme haben wirtschaftlich eine Schlüsselposition und sind auf den Wachstumsmärkten von grundlegender Bedeutung. Gefragt sind maßgeschneiderte Leichtbauwerkstoffe (tailor-made composites) mit einem adaptierten Design. Dazu müssen Konzepte entwickelt werden, um die Kombination der Komponenten optimal zu gestalten. Das erfordert werkstoffspezifisches Wissen und Korrelationsvermögen sowie die Gestaltung komplexer Technologien, auch unter dem Aspekt der kontinuierlichen Massen- und Großserienfertigung (in-line, in-situ) und damit der Kostenreduzierung bislang teurer Verbundwerkstoffe und Werkstoffverbunde. In der vorliegenden Arbeit wird in vergleichbarer und vergleichender Art und Weise sowie abstrahierter Form ein Bogen über das Gesamtgebiet der Verbundwerkstoffe und Werkstoffverbunde gespannt. Eine zusammenfassende Publikation über dieses noch sehr junge, aber bereits breit aufgestellte Wissenschaftsgebiet fehlt bislang. Das ist der Separierung der einzelnen, fest aufgeteilten Gruppierungen der Verbundwerkstoffe geschuldet. Querverbindungen werden selten hergestellt. Dieses Defizit in einem gewissen Maße auszugleichen, ist Ziel der Arbeit. Besondere Berücksichtigung finden Begriffsbestimmungen und Klassifikationen, Herstellungsverfahren und Eigenschaften der Werkstoffe. Es werden klare Strukturierungen und Übersichten herausgearbeitet. Zuordnungen von etablierten und neuen Technologien sollen zur Begriffsstabilität der Terminologien „Mischbauweise“ und „Hybrider Verbund“ beitragen. Zudem wird die Problematik „Recycling und Recyclingtechnologien“ diskutiert. Zusammenfassend werden Handlungsfelder zukünftiger Forschungs- und Entwicklungsprojekte spezifiziert. Aus dem Blickwinkel der verschiedenen Herstellungsrouten insbesondere für Halbzeuge und Bauteile und der dabei gewonnenen Erkenntnisse werden verallgemeinerte Konzepte für tailor-made Verbundwerkstoffe und Werkstoffverbunde vorgeschlagen („Stellschraubenschema“). Diese allgemeinen Werkstoffkonzepte werden auf eigene aktuelle Forschungsprojekte der Schwerpunktthemen Metallmatrix- und Polymermatrix-Verbundwerkstoffe sowie der hybriden Werkstoffverbunde appliziert. Forschungsfelder für zukünftige Projekte werden abgeleitet. Besonderes Augenmerk gilt den hybriden Verbunden als tragende Säule zukünftiger Entwicklungen im Leichtbau. Hier spielen in-line- und in-situ-Prozesse eine entscheidende Rolle für eine großseriennahe, kosteneffiziente und ressourcenschonende Produktion. / Complex property profiles require increasingly advanced composite materials and material compounds, including the rapid deployment of new production technologies, because the monolithic material or a single material can no longer satisfy today's complex requirements. Future material systems are fundamentally important to growth markets, in which they have an economically key position. Tailor-made lightweight materials (tailor-made composites) with an adapted design are needed. These concepts have to be developed to design the optimum combination of components. This requires material-specific knowledge and the ability to make correlations, as well as the design of complex technologies. Continuous large-scale and mass production (in-line, in-situ), thus reducing the costs of previously expensive composite materials and material compounds, is also necessary. The present work spans the entire field of composite materials and material compounds in a comparable and comparative manner and abstract form. A summarizing publication on this still very new, but already broad-based scientific field is not yet available. The separation of the individual, firmly divided groups of the composite materials is the reason for this. Cross-connections are rarely made. The objective of this work is to compensate to some extent for this deficiency. Special consideration is given to definitions and classifications, manufacturing processes and the properties of the materials. Clear structures and overviews are presented. Mapping established and new technologies will contribute to the stability of the terms "mixed material compounds" and "hybrid material compounds". In addition, the problem of recycling and recycling technologies is discussed. In summary, areas for future research and development projects will be specified. Generalized concepts for tailor-made composite materials and material compounds are proposed ("adjusting screw scheme") with an eye toward various production routes, especially for semi-finished products and components, and the associated findings. These general material concepts are applied to own current research projects pertaining to metal-matrix and polymer-matrix composites and hybrid material compounds. Research fields for future projects are extrapolated. Particular attention is paid to hybrid material compounds as the mainstay of future developments in lightweight construction. In-line and in-situ processes play a key role for large-scale, cost- and resource-efficient production.
49

CAN Tool for Atlas Copco’s Rig Control System / CAN-verktyg för Atlas Copcos riggkontrollsystem

Ljung, Marcus, Turner, Per January 2013 (has links)
The goal of this 15 hp thesis in computer engineering was to develop a tool for monitoring and analyzing the data flow on a Controller Area Network (CAN) called Rig Control System (RCS) that is used by Atlas Copco. Atlas Copco develops and manufactures machines for Mining and Rock Excavation. The Rocktec division is responsible for the Rig Control System platform used on machines in all division within the Mining and Rock Excavation Technique (MR) business area. The tool’s primary purpose is monitor and analyze data from the RCS network and present the analyzed data in an easy way to help with development and maintenance of RCS and machines that use RCS. The advantages and how data is sent over the CAN bus are presented as well as the CANopen protocol which is a higher layer protocol based on CAN. Two ways of data acquisition from RCS are presented, a simulated environment and real hardware. Different types of interprocess communication are presented as well as the pros and cons of each of these types. The creation of the tool required a Graphical User Interface (GUI) so different frameworks for this task are also presented and discussed. A version of the tool is presented and discussed in detail. The result of the project is a tool that with further development can be of great use to developers and service engineers working with RCS. / Målet med detta 15 hp examensarbete inom datateknik var att utveckla ett verktyg för att övervaka och analysera dataflödet på ett Controller Area Network (CAN) kallat Rig Control System (RCS) som används av Atlas Copco. Atlas Copco utvecklar och tillverkar maskiner för gruvdrift och bergbrytning. Rocktec-divisionen är ansvarig för Rig Control System-plattformen som används i maskiner från alla avdelningar inom affärsområdet Mining and Rock Excavation Technique (MR). Verktygets primära uppgift är att övervaka och analysera data från RCS-nätverket och presentera den analyserade datan på ett lättöverskådligt sätt för att vara till hjälp vid utveckling och underhåll av RCS och maskiner som använder RCS. Fördelar, hur data skickas över CAN-bussen och även CANopen-protokollet, som är ett högnivåprotokoll baserat på CAN, presenteras. Två olika sätt att samla in data från RCS presenteras, en simulerad miljö och riktig hårdvara. Olika typer av interprocesskommunikation och deras respektive fördelar och nackdelar presenteras. Skapandet av verktyget krävde ett grafiskt användargränssnitt så olika ramverk för denna uppgift presenteras och diskuteras i detalj. Resultatet av projektet är ett verktyg som med vidare utveckling kan vara till stor användning för utvecklare och servicetekniker som arbetar med RCS.
50

Beitrag zum Thema VERBUNDWERKSTOFFE - WERKSTOFFVERBUNDE: Status quo und Forschungsansätze

Nestler, Daisy Julia 04 November 2013 (has links)
Vielschichtige Eigenschaftsprofile benötigen zunehmend moderne Verbundwerkstoffe und Werkstoffverbunde einschließlich der raschen Entfaltung neuer Fertigungstechnologien, da der monolithische Werkstoff bzw. ein einziger Werkstoff den heutigen komplexen Anforderungen nicht mehr genügen kann. Zukünftige Werkstoffsysteme haben wirtschaftlich eine Schlüsselposition und sind auf den Wachstumsmärkten von grundlegender Bedeutung. Gefragt sind maßgeschneiderte Leichtbauwerkstoffe (tailor-made composites) mit einem adaptierten Design. Dazu müssen Konzepte entwickelt werden, um die Kombination der Komponenten optimal zu gestalten. Das erfordert werkstoffspezifisches Wissen und Korrelationsvermögen sowie die Gestaltung komplexer Technologien, auch unter dem Aspekt der kontinuierlichen Massen- und Großserienfertigung (in-line, in-situ) und damit der Kostenreduzierung bislang teurer Verbundwerkstoffe und Werkstoffverbunde. In der vorliegenden Arbeit wird in vergleichbarer und vergleichender Art und Weise sowie abstrahierter Form ein Bogen über das Gesamtgebiet der Verbundwerkstoffe und Werkstoffverbunde gespannt. Eine zusammenfassende Publikation über dieses noch sehr junge, aber bereits breit aufgestellte Wissenschaftsgebiet fehlt bislang. Das ist der Separierung der einzelnen, fest aufgeteilten Gruppierungen der Verbundwerkstoffe geschuldet. Querverbindungen werden selten hergestellt. Dieses Defizit in einem gewissen Maße auszugleichen, ist Ziel der Arbeit. Besondere Berücksichtigung finden Begriffsbestimmungen und Klassifikationen, Herstellungsverfahren und Eigenschaften der Werkstoffe. Es werden klare Strukturierungen und Übersichten herausgearbeitet. Zuordnungen von etablierten und neuen Technologien sollen zur Begriffsstabilität der Terminologien „Mischbauweise“ und „Hybrider Verbund“ beitragen. Zudem wird die Problematik „Recycling und Recyclingtechnologien“ diskutiert. Zusammenfassend werden Handlungsfelder zukünftiger Forschungs- und Entwicklungsprojekte spezifiziert. Aus dem Blickwinkel der verschiedenen Herstellungsrouten insbesondere für Halbzeuge und Bauteile und der dabei gewonnenen Erkenntnisse werden verallgemeinerte Konzepte für tailor-made Verbundwerkstoffe und Werkstoffverbunde vorgeschlagen („Stellschraubenschema“). Diese allgemeinen Werkstoffkonzepte werden auf eigene aktuelle Forschungsprojekte der Schwerpunktthemen Metallmatrix- und Polymermatrix-Verbundwerkstoffe sowie der hybriden Werkstoffverbunde appliziert. Forschungsfelder für zukünftige Projekte werden abgeleitet. Besonderes Augenmerk gilt den hybriden Verbunden als tragende Säule zukünftiger Entwicklungen im Leichtbau. Hier spielen in-line- und in-situ-Prozesse eine entscheidende Rolle für eine großseriennahe, kosteneffiziente und ressourcenschonende Produktion. / Complex property profiles require increasingly advanced composite materials and material compounds, including the rapid deployment of new production technologies, because the monolithic material or a single material can no longer satisfy today's complex requirements. Future material systems are fundamentally important to growth markets, in which they have an economically key position. Tailor-made lightweight materials (tailor-made composites) with an adapted design are needed. These concepts have to be developed to design the optimum combination of components. This requires material-specific knowledge and the ability to make correlations, as well as the design of complex technologies. Continuous large-scale and mass production (in-line, in-situ), thus reducing the costs of previously expensive composite materials and material compounds, is also necessary. The present work spans the entire field of composite materials and material compounds in a comparable and comparative manner and abstract form. A summarizing publication on this still very new, but already broad-based scientific field is not yet available. The separation of the individual, firmly divided groups of the composite materials is the reason for this. Cross-connections are rarely made. The objective of this work is to compensate to some extent for this deficiency. Special consideration is given to definitions and classifications, manufacturing processes and the properties of the materials. Clear structures and overviews are presented. Mapping established and new technologies will contribute to the stability of the terms "mixed material compounds" and "hybrid material compounds". In addition, the problem of recycling and recycling technologies is discussed. In summary, areas for future research and development projects will be specified. Generalized concepts for tailor-made composite materials and material compounds are proposed ("adjusting screw scheme") with an eye toward various production routes, especially for semi-finished products and components, and the associated findings. These general material concepts are applied to own current research projects pertaining to metal-matrix and polymer-matrix composites and hybrid material compounds. Research fields for future projects are extrapolated. Particular attention is paid to hybrid material compounds as the mainstay of future developments in lightweight construction. In-line and in-situ processes play a key role for large-scale, cost- and resource-efficient production.

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