Дисертації з теми "OPEP devices"
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Paiva, Godinho Raquel. "Open Device Labs - a global community movement to democratise testing and evaluation on real devices." Doctoral thesis, Universitat de Vic - Universitat Central de Catalunya, 2020. http://hdl.handle.net/10803/668637.
Повний текст джерелаOpen labs networks characterised by local activity and global connectivity have emerged to address different demands. Open Device Labs (ODLs) is a grass-roots community movement, which aims to democratise testing and evaluation on real devices, thus far unexplored academically. An ODL is a space typically equipped with mobile devices (e.g. smartphones and tablets) connected to the Internet for Web and app testing purposes. This PhD thesis investigates the ODL ecosystem to identify its main characteristics, practices, benefits, and challenges. We conducted a qualitative inductive case study through four main units. Section I explores the ODL ecosystem, both local and global, through the community core from the hosts’ perspective and focuses on professional ODLs. Section II discusses the investigation of the ODL’s guest users’ perspective of the service. Section III explores the potential of the community to benefit the gaming industry. Section IV examines a single case of an academic ODL. Lastly, the final section presents a framework for establishing academic ODLs.
Topcu, Ali. "Multiple Devices Open Circuit Fault Diagnosis for Multilevel Inverters." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1603745813645294.
Повний текст джерелаHamad, F. M. "Energy-aware encryption mechanism for m-commerce devices." Thesis, Coventry University, 2010. http://curve.coventry.ac.uk/open/items/61037dc3-74e7-8cea-8e44-75f643220d0d/1.
Повний текст джерелаMutuku, James. "An open source model for teaching environments incorporating wireless devices." Master's thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/6422.
Повний текст джерелаAttempts have been made at bridging the digital divide in schools using desktop PC systems without much success. As a result many computer laboratories sit empty. There are many reasons for these failures. Often there are incompatibilities of software applications for the PC and its operating systems. In other cases non-existent infrastructure such as networking support for the operations. This paper describes a project aimed at achieving a more successful school educational environment by using students' mobile devices, desktop computer and open source applications. The project therefore, looks forward to a time when schools no longer have to purchase computers for their students but rather utilize mobile devices already owned by students. The paper presents results of an evaluation study on the interaction of students' moble devices with course material and teachers using open source applications in a teaching environment. The pilot project was undertaken by Schoolnet in Namibia. The result presented show that although there were constraints on such devices the educational benefits far outweight the physical limitations.
Garrett, Scott James. "Development of an Open Source Prosthetic Hand Platform." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/573.
Повний текст джерелаLiu, Yuanwen Wayne. "The implication of open innovation and open source to mobile device manufacturers." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/55224.
Повний текст джерелаCataloged from PDF version of thesis.
Includes bibliographical references (p. 73-75).
Innovations largely contribute to a technology company's continuous survival and its competitiveness in the market place. Traditionally most companies employed closed innovation model. They kept their discoveries or inventions highly secret and made no attempt to assimilate information from outside. This model worked well until 1990s when advances in technology and society had facilitated information diffusion dramatically. Mobile industry, as one of the most rapidly changing industries, is also forced to adopt the open innovation model in various forms. Recently announced Android platform caused a big stir in the industry. The gradual shift from closeness to openness is inevitable in this industry. A good example of Open Innovation is the open source software development that has been studied extensively. This study further examines the open innovation model beyond software development, i.e. open innovation in hardware and embedded system development. Lessons are learned through case studies of software, hardware and embedded system related business practice. Recommendations are given to Mobile industry, specifically the cell phone handset industry accordingly. This study will not focus on a specific platform or the user side.
by Yuanwen Wayne Liu.
S.M.
Smolarek, Tomasz. "Study of Open Mobile Alliance Device Management sessions for most effective device management." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2944.
Повний текст джерелаDuffus, Stephen N. A. "Open quantum systems, effective Hamiltonians and device characterisation." Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/33672.
Повний текст джерелаFreberg, Jon. "Using open vs. proprietary standards when developing applications for mobile devices." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for datateknikk og informasjonsvitenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18406.
Повний текст джерелаChauhan, Virendra. "Understanding the open-circuit voltage in small molecule heterojunction photovoltaic devices." Thesis, University of Warwick, 2010. http://wrap.warwick.ac.uk/4514/.
Повний текст джерелаWoolridge, Daniel 'Shane'. "An Open Architecture Approach to Networked Telemetry System." International Foundation for Telemetering, 2010. http://hdl.handle.net/10150/605942.
Повний текст джерелаWhen designing data transport systems, Telemetry and Communications engineers always face the risk that their chosen hardware will not be available or supported soon after the hardware has been installed. The best way to reduce this risk and ensure the longevity of the system is to select an open architecture standard that is supported by multiple manufacturers. This open architecture should also have the ability to be easily upgraded and provide for all of the features and flexibility that are required to be a reliable carrier-grade edge-device. The PCI Industrial Computer Manufacturers Group (PICMG) developed the MicroTCA open standard to address the specific needs of these Communications and Network System Engineers. This paper describes the MicroTCA architecture and how it can be applied as the ideal edge-device solution for Networked Telemetry Systems applications.
Mawler, Stuart. "Executable Texts: Programs as Communications Devices and Their Use in Shaping High-tech Culture." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31388.
Повний текст джерелаMaster of Science
Krull, Greig Emil. "Supporting seamless learning: Students' use of multiple devices in open and distance learning universities." Doctoral thesis, Universitat Oberta de Catalunya, 2018. http://hdl.handle.net/10803/460834.
Повний текст джерелаEl propósito de esta tesis doctoral es entender los hábitos y comportamientos de aprendizaje de los estudiantes que utilizan diferentes dispositivos para aprender con el fin de determinar cómo llevan a cabo las actividades de aprendizaje utilizando las diferentes tecnologías de las que disponen en los distintos lugares donde se mueven, además de diagnosticar los diferentes tipos de apoyo que requieren durante el aprendizaje. La investigación utiliza como muestra de estudio dos universidades de aprendizaje abierto y a distancia (AAD): una situada en España y otra situada en Sudáfrica. Los resultados demuestran que los estudiantes son capaces de continuar el aprendizaje en múltiples contextos y ubicaciones usando para ello múltiples dispositivos (tecnologías móviles y personales) e internet. En este sentido, el aprendizaje es ininterrumpido. Así, pues, las universidades de AAD necesitan redefinir su diseño de aprendizaje y los servicios de apoyo al estudiante durante el aprendizaje.
The objective of this doctoral thesis is to understand the learning habits and behaviours of students using different devices in their learning in order to determine how they move between technologies, locations and learning activities, and the types of support they require. A mixed methods case study was conducted at two open and distance learning (ODL) universities, one in Spain and one in South Africa. Students are able to continue their learning experiences across different contexts and settings with the aid of mobile and personal technologies, together with internet services. This fulfils the aim of seamless learning. The results of the study will enable universities to design better learning experiences or offer improved support services to better meet the needs of students using multiple devices.
Jankowska, Bożena. "Architectural frameworks for automated content adaptation to mobile devices based on open-source technologies." kostenfrei, 2007. http://nbn-resolving.de/urn:nbn:de:kobv:521-opus-234.
Повний текст джерелаKasmi, Zakaria [Verfasser]. "Open Platform Architecture for Decentralized Localization Systems Based on Resource-Constrained Devices / Zakaria Kasmi." Berlin : Freie Universität Berlin, 2019. http://d-nb.info/1194381723/34.
Повний текст джерелаFaraj, A. "Assessing the performance of combined sustainable drainage and ground source heat devices in a domestic building." Thesis, Coventry University, 2013. http://curve.coventry.ac.uk/open/items/74d2036b-7ba3-478c-ad78-fd5957464d1c/1.
Повний текст джерелаSturgess, M. "Selective catalytic reduction for light-duty diesel engines using ammonia gas." Thesis, Coventry University, 2012. http://curve.coventry.ac.uk/open/items/aa3c644b-15fd-429a-b457-a831d44c5dce/1.
Повний текст джерелаStute, Pia-Marie. "Open House : Reclaiming the technological interior of household electronics." Thesis, Konstfack, Industridesign, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-6298.
Повний текст джерелаHofman, Mia. "An Economic Enablement hub : an exploration through architecture as an enabling device." Diss., University of Pretoria, 2018. http://hdl.handle.net/2263/63664.
Повний текст джерелаKonteks in argitektuurteorie word meer kompleks en kontroversieel soos globalisering, verstedeliking en hulpbronskaarste meer lae by die debat voeg (O’Donnell 2016: 380). Namate hierdie aspekte elke faset van ons lewe betree, lei dit tot ‘n ontwikkelingsbenadering wat die uitbuiting van mense, natuur en kultuur tot gevolg het (Fioramonti 2017: 3). Hierdie studie is van mening dat die produktiewe omgang met skaarste, ‘n alternatiewe benadering tot ontwikkeling kan wees. ‘n Kritiese ontleding van argitektoniese diskoers en die dissipline se betrokkenheid by kontekstuele kwessies plaas die debat in ‘n breë historiese konteks - van Vitrivius tot die hedendaagse teorieë - om sodoende die rol van die argitek as ‘n fasiliteerder van sosiale ruimte te identifiseer. ‘n In-diepte konteksanalise van die ruimtelike logika van Mamelodi- Oos (Tshwane, Suid-Afrika), sal die verhouding en onderliggende reëls vir sosiale en ruimtelike interaksie ontleed. Dit is hierdie verhouding wat sekere lewenstylpatrone en sosiale interaksie moontlik maak. Hierdie studie beweer dat daar belangrike lesse uit hierdie logika geleer kan word, omdat mense, temidde van die skaarste aan hulpbronne, hulle daaglikse probleme oplos. Till (2014:9) beweer dat skaarsheid ‘n onvermydelike aspek van die moderne lewe sal word. Hierdie beperkinge sal nie noodwendig tot die einde van ontwerp of ‘n magtelose weergawe daarvan lei nie, maar sal eerder nuwe uitdagings vir die ontwerper bied. Die waarde lê daarin om deur ‘n studie van die volkstaalargitektuur wat op die skaarsheid van hulpbronne en die reëls vir sosiale interaksie gebasseer is, nuwe rolle en geleenthede vir formele argitektuur te skep.
Mini Dissertation MArch(Prof)--University of Pretoria, 2018.
Architecture
MArch(Prof)
Unrestricted
Ericsson, Björn. "Omständigheter och motiv : Om hur öppna lärresurser blir till, används och återanvänds." Thesis, Uppsala universitet, Institutionen för ABM, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-160369.
Повний текст джерелаBleszynski, Michael Sean. "Impact of open abdomen and Vacuum Assisted Closure Device in surgical abdominal sepsis." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/61001.
Повний текст джерелаMedicine, Faculty of
Surgery, Department of
Graduate
au, NMabbott@iinet net, and Nicholas Mabbott. "Monitoring Device for Early Warning Signs of Operator Fatigue in Open Cut Mines." Murdoch University, 2005. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060809.93310.
Повний текст джерелаMabbott, Nicholas. "Monitoring device for early warning signs of operator fatigue in open cut mines /." Access via Murdoch University Digital Theses Project, 2006. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20060809.93310.
Повний текст джерелаMabbott, Nicholas. "Monitoring device for early warning signs of operator fatigue in open cut mines." Thesis, Mabbott, Nicholas (2005) Monitoring device for early warning signs of operator fatigue in open cut mines. PhD thesis, Murdoch University, 2005. https://researchrepository.murdoch.edu.au/id/eprint/169/.
Повний текст джерелаMabbott, Nicholas. "Monitoring device for early warning signs of operator fatigue in open cut mines." Mabbott, Nicholas (2005) Monitoring device for early warning signs of operator fatigue in open cut mines. PhD thesis, Murdoch University, 2005. http://researchrepository.murdoch.edu.au/169/.
Повний текст джерелаOyelola, O. O. "The use of compost and recycled aggregates in the treatment of runoff pollutants in vegetated sustainable drainage devices such as swale." Thesis, Coventry University, 2013. http://curve.coventry.ac.uk/open/items/082ceb3a-f311-4f8e-829f-5120b168724a/1.
Повний текст джерелаAbdul, Rahim Muhammad Afzam Shah Bin. "An investigation of computer vision syndrome with smart devices." Thesis, University of Plymouth, 2018. http://hdl.handle.net/10026.1/12813.
Повний текст джерелаCesaretti, Juan Manuel. "Mechanical stress and stress compensation in Hall sensors." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/28202.
Повний текст джерелаRoss, Anthony J. III. "Laser Machining and Near Field Microwave Microscopy of Silver Inks for 3D Printable RF Devices." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6944.
Повний текст джерелаSalerno, Guilene. "A vida se tece e a escola acontece entre-vidas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/62104.
Повний текст джерелаThis study approaches the eventalization of/in Escola Municipal Porto Alegre (EPA), an open school for young people in situation of social vulnerability in the city of Porto Alegre. Under principles of cartographic, it uses narratives of teachers, students and even the researcher as subjective constructions that explain how life is woven and how school happens between lives. In order to perform this exercise of weaving and plotting concepts and practices, the following operators were used: device, event, between lives, storytelling and cartography, based on Foucauldian and Deleuzian theories. To situate the open school in time, it was used a historic plan in which the Juvenile Code and the Child and Adolescent Statute are analyzed as devices, as well as the cartographic one, which analyzes the intensity of practices, expressions, (dis)affection in the eventalization of EPA, highlighting elements that enhance the expansion, or not, of life. It questions and unveils EPA as a care device in the rationality of the state. In its fragility, of the non-place given by the intersectionality among education, health and care, its identity is known in this bit of everything. EPA survives in this non-place by the struggle and resistance in the proper time between minor and higher education, claiming a power of action that requires strengths and invention in a long history of facts of domination and oppression, mainly among children and youngsters and those made “minor” by being disadvantaged. The study seeks to discover clues built by youngsters, students and by educators regarding public policy and invention of new spaces, new ethics, aesthetics and political possibilities, and new webs that are beyond knowledge and practices in place.
Markus, Ofri. "The mobile common : A guide to mobile open source and its effects on mobile device manufacturers." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/55221.
Повний текст джерела"April 2008." Cataloged from PDF version of thesis.
Includes bibliographical references (p. 79-80).
At the beginning of 2009, the global mobile industry is in the midst of a revolution, characterized by a trend towards openness, driven by technological advances, evolving consumer demands and increasing competition. Open mobile operating systems, which allowed third party software development, have existed since 2001, but they haven't had much effect on the industry's business ecosystem or the customers' expectations and demands. The release of the iPhone in 2007 had profound impact not only on dominant design of smartphones and on consumers' expectations, but also on the balance of power in the mobile industry amongst network operators, mobile device manufacturers and software developers. The trend continued with the subsequent announcements of leading industry players that they will develop open source operating systems for mobile phones, and make them accessible to everyone. Today, top mobile device manufacturers are on the verge of releasing dozens of new devices running open source operating systems, which has the potential to completely change the current market share of the players in the market. The purpose of this thesis is to guide product managers in the mobile industry. It examines the historical and current structure of the mobile business ecosystem, reviews latest developments in open operating systems and open source platforms and their affects on industry players today, and identifies potential influences and developments for the future based on analysts' reports assessment, industry experts' viewpoints study, and interviews with industry executives.
by Ofri Markus.
S.M.
Baudrit, Daniel 1957. "FLOW MEASUREMENT USING A SENSING DEVICE NEAR THE LIP OF A GATE (CANALS, OPEN CHANNEL FLOW)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275569.
Повний текст джерелаRöstin, Martin. "Development of a Flexible Software Framework for Biosignal PI : An Open-Source Biosignal Acquisition and Processing System." Thesis, KTH, Skolan för teknik och hälsa (STH), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-183525.
Повний текст джерелаAllt eftersom världens befolkning åldras, ställs sjukvården inför nya utmaningar i att behandla fler patienter till en lägre kostnad än idag. En trend för att lösa detta problem är att utöka möjligheterna till vård i hemmet.För att kunna göra detta finns det ett ökande behov av säkra och kostnadseffektiva patientövervakningssystem. Biosignal PI är ett pågående projekt med öppen källkod som skapats för att utveckla en flexibel och prisvärd plattform för utveckling av fristående enheter som kan mäta och bearbeta olika fysiologiska signaler. Detta examensarbete genomfördes vid institutionen för medicinska sensorer, signaler och system vid Skolan för Teknik och Hälsa. Projektet syftade till att vidareutveckla den befintliga mjukvaran för Biosignal PI genom att skapa ett nytt flexibelt mjukvaruramverk som kan användas för mätning och bearbetning av olika typer av biosignaler.Projektet syftade också till att utvidga mjukvaran och lägga till funktioner för att kunna genomföra hjärtfrekvensvariabilitets(HRV) analys i Biosignal PIs mjukvara, samt att utveckla ett grafiskt användargränssnitt(GUI) för hårdvarumodulen PiFace Control and Display. Projektet har utvecklat ett nytt flexibelt mjukvaruramverk för Biosignal PI. Det nya ramverket konstruerades för att abstrahera alla hårdvaruspecifika delar in i mindre utbytbara moduler, med tanken att modulerna ska vara oberoende i hur de hanterar sin specifika uppgift. På så sätt ska det vara möjligt att göra ändringar i Biosignal PIs programvara utan att behöva skriva om hela mjukvaran.Det nyutvecklade Biosignal PI ramverket implementerades i det befintliga hårdvaru systemet, som består av en Raspberry PI, liten och prisvärd enkortsdator, ansluten till ADAS1000, en analog hårdvarumodul med möjlighet att registrera ett elektrokardiografi(EKG/ECG). För att kontrollera Biosignal PI programmet har två olika grafiska användargränssnitt skapats.Det ena gränssnitt är en utvidgning av original programvaran med tillagd funktionalitet för att kunna göra HRV-Analys på Raspberry PI, detta gränssnitt kräver dock mus och dataskärm för att kunna användas.För att kunna styra Biosignal PI utan mus och skärm skapades det även ett gränssnitt för PiFace Control and Display. PiFace gränssnittet gör det möjligt för användaren att samla in och lagra EKG-signaler utan att behöva en stor datorskärm, på så sätt kan man öka Biosignal PI systemets mobilitet. För att underlätta utvecklingsprocessen, samt göra projektet mer förenligt med det medicintekniska regelverket, har ett par utvecklingsverktyg integrerats till Biosignal PI projektet såsom CMake för kontroll av kompileringsprocessen, test ramverket Googletest för automatiserad testning samt integrering med dokumentations generatorn Doxygen för att kunna skapa en dokumentation av mjukvaran.
Kalkov, Igor [Verfasser], Stefan [Akademischer Betreuer] Kowalewski, and Uwe [Akademischer Betreuer] Aßmann. "A real-time capable, open-source-based platform for off-the-shelf embedded devices / Igor Kalkov ; Stefan Kowalewski, Uwe Aßmann." Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1185441875/34.
Повний текст джерелаJacobs, Rene Catherine. "Evaluation of positive expiratory pressure (PEP) devices as an adjunct to cardio-respiratory physiotherapy in patients following open abdominal surgery." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/16681.
Повний текст джерелаPurpose: Cardio-respiratory physiotherapy for patients undergoing abdominal surgery has been found to be beneficial in improving lung function post-operatively and in the prevention and treatment of post-operative pulmonary complications (PPCs). The Blow Bottle, a Positive Expiratory Pressure (PEP) therapy device, is commonly used as an adjunct to physiotherapy. The Blow Bottle is low cost and can be easily made by the physiotherapist using readily available materials in the hospital setting. However, evidence to support the use of Blow Bottles in the post-operative management of abdominal surgery is minimal, with few studies reporting significant positive effects especially when compared to conventional cardio-respiratory physiotherapy techniques. Methodology: A randomized control was implemented in a public tertiary institution within the Western Cape. Patients admitted for open abdominal surgery via midline incision were eligible for the trial. Participants were randomly allocated to either the control group (CG) receiving conventional post-operative cardio-respiratory physiotherapy, or the intervention group (IG) who received the additional use of the Blow Bottle. Lung function and the development of post-operative pulmonary complications were the primary outcome s of this study. Lung Function was evaluated by means of spirometry testing and interpretation of Forced Expiratory Volume in 1 second (FEV 1) and Forced Vital Capacity (FVC). The development of post-operative pulmonary complications were diagnosed using the criteria by Mackay et al. (2005) where changes from pre-operative findings of auscultation; temperature, X-ray and sputum are evaluated post-operatively and recorded using the Adapted Abdominal Physiotherapy Outcomes Data Sheet (A-APODS). Results: A total of 19 participants were enrolled in the study, n=11 (CG) and n=8 (IG), predominantly female (n=14) and admitted for cancer related abdominal surgery (n=9). There was a statistically significant (p<0.05) marked reduction in post-operative lung function from baseline across groups, 62% in FEV 1 and 47% in FVC on the first post-operative day. The FEV 1 and FVC were similar across both the control and intervention groups for the first three post-operative days. On auscultation majority of participants had decreased breath sounds on the first post-operative day. However, no one participant developed a PPC across the duration of the study as diagnosed using the criteria by Mackay et al. (2005). Conclusion: Whether the additional use of the Blow Bottle is more beneficial than conventional post-operative cardio-physiotherapy alone is inconclusive due to the incremental drop out of participants from the study and small sample size. In this study there was however a significant reduction in lung function post-operatively. This mandates the need for further research investigating the abdominal surgical field and the use of devices to improve lung function, such as the Blow Bottle, as literature is scant and outdated, and sorely lacking in the resource constraint South African hospital settings.
Jacobs, Rene Catherine. "Evaluation of positive expiratory pressure (PEP) devices as an adjunct to cardio-respiratory physiotherapy in patients following open abdominal surgery." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/16681.
Повний текст джерелаPurpose: Cardio-respiratory physiotherapy for patients undergoing abdominal surgery has been found to be beneficial in improving lung function post-operatively and in the prevention and treatment of post-operative pulmonary complications (PPCs). The Blow Bottle, a Positive Expiratory Pressure (PEP) therapy device, is commonly used as an adjunct to physiotherapy. The Blow Bottle is low cost and can be easily made by the physiotherapist using readily available materials in the hospital setting. However, evidence to support the use of Blow Bottles in the post-operative management of abdominal surgery is minimal, with few studies reporting significant positive effects especially when compared to conventional cardio-respiratory physiotherapy techniques. Methodology: A randomized control was implemented in a public tertiary institution within the Western Cape. Patients admitted for open abdominal surgery via midline incision were eligible for the trial. Participants were randomly allocated to either the control group (CG) receiving conventional post-operative cardio-respiratory physiotherapy, or the intervention group (IG) who received the additional use of the Blow Bottle. Lung function and the development of post-operative pulmonary complications were the primary outcome s of this study. Lung Function was evaluated by means of spirometry testing and interpretation of Forced Expiratory Volume in 1 second (FEV 1) and Forced Vital Capacity (FVC). The development of post-operative pulmonary complications were diagnosed using the criteria by Mackay et al. (2005) where changes from pre-operative findings of auscultation; temperature, X-ray and sputum are evaluated post-operatively and recorded using the Adapted Abdominal Physiotherapy Outcomes Data Sheet (A-APODS). Results: A total of 19 participants were enrolled in the study, n=11 (CG) and n=8 (IG), predominantly female (n=14) and admitted for cancer related abdominal surgery (n=9). There was a statistically significant (p<0.05) marked reduction in post-operative lung function from baseline across groups, 62% in FEV 1 and 47% in FVC on the first post-operative day. The FEV 1 and FVC were similar across both the control and intervention groups for the first three post-operative days. On auscultation majority of participants had decreased breath sounds on the first post-operative day. However, no one participant developed a PPC across the duration of the study as diagnosed using the criteria by Mackay et al. (2005). Conclusion: Whether the additional use of the Blow Bottle is more beneficial than conventional post-operative cardio-physiotherapy alone is inconclusive due to the incremental drop out of participants from the study and small sample size. In this study there was however a significant reduction in lung function post-operatively. This mandates the need for further research investigating the abdominal surgical field and the use of devices to improve lung function, such as the Blow Bottle, as literature is scant and outdated, and sorely lacking in the resource constraint South African hospital settings.
Tress, Wolfgang. "Device Physics of Organic Solar Cells." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-89501.
Повний текст джерелаDiese Dissertation beschäftigt sich mit der Physik organischer Solarzellen. Die organische Photovoltaik ist ein Forschungsgebiet, dem in den letzten zehn Jahren enorme Aufmerksamkeit zu Teil wurde. Der Grund liegt darin, dass diese neuartigen Solarzellen, deren aktueller Rekordwirkungsgrad bei 10 Prozent liegt, ein Potential für eine kostengünstige Produktion auf flexiblem (Polymer)substrat aufweisen und aufgrund ihrer Vielfältigkeit neue Anwendungsbereiche für die Photovoltaik erschließen. Organische Solarzellen bestehen aus ultradünnen (einige 10 nm) Schichten aus Kohlenwasserstoffverbindungen. Damit der photovoltaische Effekt genutzt werden kann, müssen die durch Licht angeregten Molekülzustände zu freien Ladungsträgern führen, wobei positive und negative Ladung an unterschiedlichen Kontakten extrahiert werden. Für eine effektive Trennung dieser stark gebundenden lokalisierten angeregten Zustände (Exzitonen) ist eine Grenzfläche zwischen Molekülen mit unterschiedlichen Energieniveaus der Grenzorbitale erforderlich, sodass ein Elektron auf einem Akzeptor- und eine positive Ladung auf einem Donatormolekül entstehen. Diese Grenzschicht kann als planarer Heteroübergang durch zwei getrennte Schichten oder als Volumen-Heteroübergang in einer Mischschicht realisiert werden. Die Absorberschichten werden durch Elektroden kontaktiert, wobei es für effiziente Solarzellen erforderlich ist, dass diese einen ohmschen Kontakt ausbilden, da ansonsten Verluste zu erwarten sind. Diese Arbeit behandelt im Besonderen die elektrischen Prozesse einer organischen Solarzelle. Dafür wird ein eindimensionales Drift-Diffusionsmodell entwickelt, das den Transport von Exzitonen, deren Trennung an einer Grenzfläche und die Ladungsträgerdynamik beschreibt. Abgesehen von den Exzitonen gilt als weitere Besonderheit einer organischen Solarzelle, dass sie aus amorphen, intrinsischen und sehr schlecht leitfähigen Absorberschichten besteht. Elektrische Effekte sind an der Strom-Spannungskennlinie (I-U ) sichtbar, die in dieser Arbeit als Hauptvergleichspunkt zwischen experimentellen Solarzellendaten und den Simulationsergebnissen dient. Durch einen weitgehend qualitativen Vergleich können dominierende Prozesse bestimmt und mikroskopische Erklärungen gefunden werden. Ein wichtiger Punkt ist der schon erwähnte Kontakt zwischen Absorberschicht und Elektrode. Dort auftretende Energiebarrieren führen zu einem Einbruch im Solarzellenwirkungsgrad, der sich durch eine Verringerung der Leerlaufspanung und/oder S-förmigen Kennlinien (S-Knick) bemerkbar macht. Anhand einer systematischen Studie der Grenzfläche Lochleiter/Donator wird gezeigt, dass Energiebarrieren sowohl für die Ladungsträgerextraktion als auch für die -injektion zu S-Knicken führen können. Insbesondere die Tatsache, dass Injektionsbarrieren sich auch negativ auf den Photostrom auswirken, wird anhand von simulierten Ladungsträger- und elektrischen Feldprofilen erklärt. Das Aufstauen von Ladungsträgern an Extraktionsbarrieren wird durch Messungen transienter Photoströme bestätigt. Da S-Knicke in organischen Solarzellen im Allgemeinen häufig beobachtet werden, werden weitere Methoden vorgeschlagen, die die Identifikation der Ursachen ermöglichen. Dazu zählen I-U Messungen in Abhängigkeit von Temperatur und Schichtdicken. Als eine weitere Ursache von S-Knicken werden unausgeglichene Ladungsträgerbeweglichkeiten in einer Solarzelle mit flachem Übergang identifiziert und von den Barrierefällen unterschieden. Weiterer Forschungsgegenstand dieser Arbeit sind Mischschichtsolarzellen aus dem Donator-Farbstoff Zink-Phthalozyanin ZnPc und dem Akzeptor Fulleren C60. Dort wird beobachtet, dass die Leerlaufspannung vom Mischverhältnis abhängt. Ein Vergleich von Experiment und Simulation zeigt, dass sich das Ionisationspotenzial von ZnPc und dadurch die effektive Energielücke des Mischsystems ändern. Zusätzlich zu homogenen Mischschichten werden Solarzellen untersucht, die einen Gradienten im Mischungsverhältnis aufweisen. Die Vermutung liegt nahe, dass ein hoher Donatorgehalt am Löcherkontakt und ein hoher Akzeptorgehalt nahe des Elektronenkontakts die Ladungsträgerextraktion begünstigen. Dieser Effekt ist in dem hier untersuchten System allerdings vergleichsweise irrelevant gegenüber der Tatsache, dass der Gradient das Abfließen bzw. die Rekombination von Ladungsträgern am “falschen” Kontakt reduziert und somit die Leerlaufspannung erhöht. Der wichtigste intrinsische Verlustmechanismus einer Solarzelle ist die Rekombination von Ladungsträgern. Diese wird im letzten Teil der Arbeit anhand der ZnPc:C60 Solarzelle behandelt. Messungen der Leerlaufspannung in Abhängigkeit von der Beleuchtungsintensität zeigen, dass sich der dominierende Rekombinationsprozess mit zunehmender Intensität von Störstellenrekombination zu direkter Rekombination von freien Ladungsträgern verschiebt. Eine gezielte Variation des Absorptionsprofils in der Absorberschicht zeigt, dass die Ladungsträgerextraktionswahrscheinlickeit vom Ort der Ladungsträgergeneration abhängt. Dieser Effekt wird hervorgerufen durch unausgeglichene Elektronen- und Löcherbeweglichkeiten und äußert sich im Füllfaktor. Weitere Simulationsergebnisse bezüglich des Einflusses von Ladungsträgerbeweglichkeiten und verschiedener Rekombinationsmechanismen auf die I-U Kennlinie und die experimentelle Identifikation eines Photoshunts, der den Photostrom in Rückwärtsrichtung unter Beleuchtung dominiert, runden die Arbeit ab
Pugh, Ian Bradford Ngongotoha. "“Devoted & Disgruntled”: Improbable’s Devising, Eldership, and Open Space Technology." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366467614.
Повний текст джерелаFilmalter, John David. "The associative behaviour of silky sharks, Carcharhinus falciformis, with floating objects in the open ocean." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1018177.
Повний текст джерелаChen, Jianhao. "Investigation of CdS Nanowires and Planar Films for Enhanced Performance as Window Layers in CdS-CdTe Solar Cell Devices." UKnowledge, 2013. http://uknowledge.uky.edu/ece_etds/27.
Повний текст джерелаFix, Robert. "THE COGNITIVE AND FUNCTIONAL IMPACT OF OPEN HEART SURGERY: A PILOT STUDY INCLUDING THREE COMMON PROCEDURES (CORONARY ARTERY BYPASS GRAFT, HEART VALVE REPLACEMENT, AND LEFT VENTRICULAR ASSIST DEVICE)." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5345.
Повний текст джерелаQuiñones, Colomer Darío Rubén. "Developing preclinical devices for neuroscience research in the fields of animal tracking, fMRI acquisition, and 3D histology cutting." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/118795.
Повний текст джерела[CAT] La neurociència és un camp que abasta moltes especialitats. L'objectiu d'aquesta tesi és esmenar algunes manques tecnològiques que existeixen en els mètodes actuals d'experimentació animal en neurociència. En aquesta tesi, es presenten sis projectes, que tindran com a objectiu millorar el "Principi de les tres R", el qual va ser enunciat pels biòlegs anglesos W. M. S. Russell i R. L. Burch, durant l'experimentació animal. El comportament és un dels aspectes m'és importants de la vida animal. Depèn dels vincles entre els animals, els seus sistemes nerviosos i els seus entorns. Per estudiar el comportament dels animals de laboratori, es necessiten diverses eines, però` una eina de seguiment és essencial per a dur a terme un estudi de comportament exhaustiu. Diverses eines de seguiment visual estan actualment disponibles. No obstant això, totes tenen alguns inconvenients. Per exemple, en una situació en la qual un animal esta` dins d'un cau o prop d'altres animals, les cambres de rastreig (tracking) no sempre poden detectar la ubicació precisa o el moviment de l'animal. Per aquesta raó, els entorns enriquits per a intentar recrear l'hàbitat natural dels animals en experimentació no poden utilitzar-se, ja que les dades recopilades són insuficients/inexactes. Amb la finalitat de millorar els experiments de tracking/seguiment RFID Assisted Tracking Tile (RATT) és presentat en aquesta tesi. RATT es un sistema de seguiment basat en tecnologia d'identificació passiva de radiofreqüència (RFID) i esta` compost per rajoles electròniques amb les quals es pot construir una gran superfície, sobre la qual els animals poden moures lliurement. Això permet la identificació més precisa dels animals, així com el seguiment dels seus moviments. Aquest sistema, que també es pot combinar amb un sistema de seguiment amb cambres, aplana el camí per a estudis complets de comportament en entorns enriquits. Donada la capacitat de rastrejar animals i, per tant, realitzar experiments de comportament exhaustius, és possible observar com es comporten els subjectes des d'un punt de vista extern. No obstant això, si volem comprendre el que succeeix en el cervell d'aquests subjectes, és necessari aplicar altres tècniques d'anàlisis, per exemple, l'estudi de senyals dependents del nivell d'oxigen en la sang (BOLD, per les seues sigles en anglès). Els senyals BOLD es basen en les respostes vasculars a l'activació neuronal i s'utilitzen àmpliament en estudis d'investigació clínics i preclínics. En entorns preclínics, els animals solen ser anestesiats. No obstant això, els anestèsics causen canvis en la fisiologia de els animals, per exemple hipotèrmia, i això te el potencial d'alterar els senyals funcionals de MRI (fMRI). Per a evitar la hipotèrmia en rosegadors anestesiats, es presenta TherMouseDuino. Aquest és un sistema de control automàtic de temperatura de codi obert, que redueix les fluctuacions de la temperatura, la qual cosa proporciona condicions solides per a realitzar experiments de ressonància magnètica funcional. En els cursos de biologia i neurociència, l'anatomia del cervell s'ensenya generalment utilitzant imatges de ressonància magnètica (IRM) o seccions histològiques de diferents plans. Aquests mostren les àrees macroscòpiques més importants en el cervell de un animal. No obstant això, aquest mètode no és dinàmic ni intuïtiu. En aquesta tesi es presenta un cervell de rata imprès en 3D amb finalitats educatius. La manipulació manual de l'estructura, facilitada per l'ampliació de les seues dimensions, juntament amb la capacitat de desmuntar el "cervell" en algunes de les seues parts principals, facilita la comprensió de l'organització 3D del sistema nerviós. Aquest és un mètode alternatiu i millorat per a ensenyar a els estudiants en general i als biòlegs, en particular, l'anatomia del cervell de rata.
[EN] Neuroscience is a field that covers many specialties. The objective of this thesis is to correct some technological deficiencies that exist in current methods of animal experimentation in neuroscience. In this thesis, six projects are presented, which will aim to improve the "Principle of the three Rs" in animal experimentation enunciated by the English biologists W. M. S. Russell and R. L. Burch. In the present era of impressive progress in neuroscience, it is still not arguable that a complete understanding of the brain cannot be possible without a comparable understanding of animal behavior. In order to study the behavior of laboratory animals, various tools are needed, being a reliable tracking system one of the most important to follow large populations of individual subjects that interact in complex manners. Several visual tracking tools are currently available. However, they all have some drawbacks. For example, in a situation where an animal is inside a cave, or is in close proximity to other animals, tracking cameras cannot always detect the precise location or movement of the animal. For this reason, environments that have been enriched in order to attempt to recreate the natural habitat of the animals under experiment, cannot be used, as the data gathered is insufficient/inaccurate. In order to improve the current tracking systems , the RATT is presented. RATT is a tracking system based on passive RFID technology and it is composed of electronic tiles. Using several tiles, a large surface area, on which the animals can move freely, can be built. This enables the more accurate identification of the animals, as well as the tracking of their movements. This system, which can also be combined with a visual tracking system, paves the way for complete behavioral studies in enriched environments. Given the ability to track animals and thus conduct thorough behavioral experiments, it is possible to observe how the subjects behave from an external viewpoint. However, if we want to understand what is going on in the brains of these subjects, it is necessary to apply other analysis techniques, for example the study of BOLD signals. BOLD signals are based on vascular responses to neuronal activation and are used extensively in clinical and preclinical research studies. In preclinical settings, animals are usually anesthetized. However, anesthetics cause changes in the physiology of the animals, e.g. hypothermia, and this has the potential to disrupt fMRI signals. In order to avoid hypothermia in anesthetized rodents, TherMouseDuino is presented. This is an Open-Source automatic temperature control system, which reduces temperature fluctuations, thus providing robust conditions in which to perform fMRI experiments. In biology and neuroscience courses, brain anatomy is generally taught using MRI or histological sections of different planes. These show the most important macroscopic areas in an animals' brain. However, this method is neither dynamic nor intuitive. An anatomical 3D printed rat brain with educative purposes is presented in this thesis. Hand manipulation of the structure, facilitated by the scaling up of its dimensions, together with the ability to dismantle the "brain" into some of main its constituent parts, facilitates the understanding of the 3D organization of the nervous system. This is an alternative and improved method for teaching students in general and biologists, in particular, the rat brain anatomy.
This work was supported in part by the Spanish Ministerio de Economía y Competitividad (MINECO) and FEDER funds under grants BFU2015-64380-C2-2-R (D.M.) and BFU2015-64380-C2-1-R, by EU Horizon 2020 Program 668863-SyBil-AA grant (S.C.). S.C. acknowledges financial support from the Spanish State Research Agency, through the “Severo Ochoa” Programme for Centres of Excellence in R&D (ref. SEV-2013-0317) and by a grant “Ayudas para la formación de personal investigador (FPI)” from the Vicerrectorado de Investigación, Innovación y Transferencia of the Universitat Politècnica de València.
Quiñones Colomer, DR. (2019). Developing preclinical devices for neuroscience research in the fields of animal tracking, fMRI acquisition, and 3D histology cutting [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/118795
TESIS
Ntinda, Maria Ndapewa. "Web-based M-learning system for ad-hoc learning of mathematical concepts amongst first year students at the University of Namibia." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1013174.
Повний текст джерелаCastelli, Jonathan. "Design and validation of innovative integrated circuits and embedded systems for neurostimulation applications." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0812/document.
Повний текст джерелаBioelectronics is a cross-disciplinary field that studies interconnections and interactions between biological entities (cells, tissues, organs) and electronic systems, using the adequate transducer. For excitable cells or tissues (neurons, muscles, . . . ), the transducer takes the form of a simple electrode, as these tissues produce a spontaneous electrical activity or,in the opposite way, may be excited by an external electrical signal. This bi-directional communication gives rise to two experimental schemes: acquisition and stimulation. Acquisition consists in recording, processing and analyzing bio-signals whereas stimulation consists in applying the adequate electrical current to living tissues in order to trigger a reaction. This thesis focuses on the latter: two generations of stimulation systems have been developed, both being centered on an Application Specific Integrated Circuit, and adapted to different application contexts. First, the scientific framework was given by the CENAVEX project, focusing on Functional Electrical Stimulation to rehabilitate the respiratory function, following a Spinal Cord Injury. Then, the design objectives were extended to cover new application needs:in situ electrical impedance monitoring and exploration of original stimulation wave forms.The first one could be a solution to follow the tissue reaction after electrode implantation,hence contributing to long-term biocompatibility of implants; the second one proposes to go further the conventional constant biphasic pulse and explore new wave forms that couldbe most efficient in terms of energy consumption, for a given physiological effect.The work presented in this manuscript is a contribution to the design, fabrication and test of innovative stimulation devices. It leaded to the development of two integrated circuits and two stimulation devices permitting multichannel stimulation. Both electrical characterizations and biological validations, from in vitro feasibility to in vivo experiments, have been conducted and are described in this manuscript
Pantoni, Rodrigo Palucci. "Desenvolvimento e implementação de uma descrição de dispositivos aberta e não-proprietária para equipamentos FOUNDATION fieldbus baseada em XML." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-07122006-084142/.
Повний текст джерелаThe interoperability among devices or software based on fieldbus technologies is becoming increasingly requested and demanded because it allows the integration of devices or software from different manufacturers. The integration is implemented through a common communication language used among the different heterogeneous technologies. In the FOUNDATION fieldbus configurator software is used to provide interoperability among devices a proprietary and complex technology (to be developed by manufacturers), known as Electronic Device Description (EDD) that is defined by the fieldbus Foundation. Meanwhile, open and non-proprietary software technologies have presented a great growth in the last years, especially the eXtensible Markup language (XML) technology, which has became worldwide known due to the integration of internet (heterogeneous) applications. This study proposes a new open, non-proprietary and simple (for manufacturer development) device description based on XML, that is named Open-EDD (Open Electronic Device Description). The creation of this technology includes the definition of the language Open-EDDML (Open Electronic Device Description Markup Language), modeling the XML Schema, projecting and implementing the parser. This technology is validated by integrating it to an existent configurator and testing it using FF devices.
Kantner, Markus [Verfasser], Uwe [Akademischer Betreuer] Bandelow, Andreas [Akademischer Betreuer] Knorr, Uwe [Gutachter] Bandelow, Andreas [Gutachter] Knorr, and Bernd [Gutachter] Witzigmann. "Modeling and simulation of electrically driven quantum dot based single-photon sources : from classical device physics to open quantum systems / Markus Kantner ; Gutachter: Uwe Bandelow, Andreas Knorr, Bernd Witzigmann ; Uwe Bandelow, Andreas Knorr." Berlin : Technische Universität Berlin, 2018. http://d-nb.info/1169741959/34.
Повний текст джерелаTalarcek, Steven C. "An Experimental Study of Disturbance Compensation and Control for a Fractional-Order System." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1542303891784113.
Повний текст джерелаBromberg, David. "Résolution de l'hétérogénéité des intergiciels d'un environnement ubiquitaire." Phd thesis, Université de Versailles-Saint Quentin en Yvelines, 2006. http://tel.archives-ouvertes.fr/tel-00469445.
Повний текст джерелаVýborný, Jiří. "Bezdrátové zabezpečovací zařízení." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217658.
Повний текст джерелаLeandro, Eduardo [UNESP]. "Um novo sistema de refrigeração com controle de temperatura, compressor aberto, máquina de indução trifásica com velocidade variável e correção ativa do fator de potência do estágio de entrada." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/87222.
Повний текст джерелаConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Este trabalho apresenta uma nova proposta para sistema de refrigeração com controle dinâmico de temperatura, operando com estrutura de compressor aberto, acionado por motor de indução trifásico com velocidade variável, e estágio de entrada retificador com correção ativa do fator de potência. O estágio de entrada é composto por um retificador Boost monofásico com elevado fator de potência, com duas células entrelaçadas, operando no modo de condução crítica, empregando técnica de comutação não dissipativa e controlado por dispositivo FPGA, associado a um estágio de saída inversor de dois níveis convencional trifásico à IGBT, o qual é controlado por um Processador Digital de Sinais (DSP - Digital Signal Processor). A técnica de comutação não dissipativa para o estágio de entrada é baseada em células ZCS (Zero-current-switching). As principais características do retificador incluem a redução da ondulação da corrente de entrada, redução da ondulação da tensão de saída retificada, utilização de componentes com reduzidos esforços, reduzido volume do filtro de entrada para Interferências Eletromagnéticas (EMI - Electromagnetic Interference), elevado Fator de Potência (FP) e reduzida Distorção Harmônica Total (DHT) da corrente de entrada, atendendo os limites da norma IEC61000-3-2. O controle digital para o estágio de saída inversor foi desenvolvido usando duas diferentes técnicas, incluindo a técnica convencional controle escalar Volts/Hertz (V/Hz) e o controle Vetorial com Orientação pelo Fluxo do estator, com o propósito de verificar a aplicabilidade e a performance dos controles digitais propostos, para o controle contínuo da temperatura, aplicados a um protótipo de sistema de refrigeração.
This work presents a new proposal for refrigeration systems with dynamic control of temperature, working with structure of open compressor, driving a three-phase induction motor with variable speed, and input rectifier with active power factor correction. The proposed system is composed of a single-phase high-power-factor boost rectifier, with two cells in interleaved connection, operating in critical conduction mode, and employing a softswitching technique, controlled by a Field Programmable Gate Array (FPGA), associated with a conventional three-phase IGBT bridge inverter (VSI - Voltage Source Inverter), controlled by a Digital Signal Processor (DSP). The soft-switching technique for the input stage is based on zero-current-switching (ZCS) cells. The rectifier s features include reduction in input current ripple, reduction in output voltage ripple, use of low stress devices, low volume for the EMI input filter, high input power factor (PF), and low total harmonic distortion (THD) in the input current, in compliance with the IEC61000-3-2 standards. The digital controller for the output stage inverter has been developed using two different techniques, the conventional Voltage-Frequency control (scalar V/Hz control), and a simplified stator oriented vector control, in order to verify the feasibility and performance of the proposed digital controls, for continuous temperature control, applied at a refrigerator prototype.