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Won, Justin. "Analyzing physical system interaction." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9343.
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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.Includes bibliographical references (p. 233-243).
Achieving stable manipulation in robots requires understanding of the consequences of physical contact and interaction. This thesis considers the problem of contact instability and provides a framework to analyze physical system interaction and provides the first step in building a design synthesis method, i.e. finding a stability criterion. By posing interaction in terms of interconnected port functions such as impedances and admittances, stability analysis can be treated as an input;'output analysis of a feedback system. Previous researchers have already used this framework to show how this method can be of use in showing a form of Lyapunov stability for interacting systems. The systems previously studied were purely passive in nature. No system was capable of power generation, and no power could enter through command inputs or external perturbations. As such, the stability results have a narrow range of applications. Even though passive systems may be commonplace, the inability to actively control the interaction limits their practicality. Analyzing interaction accounting for inputs is shown to be non-trivial within this thesis. The non-nodic behavior common to many physical systems constrains the structure of the feedback interconnections such that most existing 1/0 results are inapplicable. This non-nodic behavior is studied in order to form a representative model of a robot interacting with an unknown environment. Using a technique based on topologically separating the input/output space, we show that robust stability solutions can be obtained for such systems with unknown but passive environments. In addition, frameworks for analyzing active interactions are analyzed and discsed.
by Justin Won.
Ph.D.
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Bladh, Johan. "Hydropower generator and power system interaction." Doctoral thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-182188.
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After decades of routine operation, the hydropower industry faces new challenges. Large-scale integration of other renewable sources of generation in the power system accentuates the role of hydropower as a regulating resource. At the same time, an extensive reinvestment programme has commenced where many old components and apparatus are being refurbished or replaced. Introduction of new technical solutions in existing power plants requires good systems knowledge and careful consideration. Important tools for research, development and analysis are suitable mathematical models, numerical simulation methods and laboratory equipment. This doctoral thesis is devoted to studies of the electromechanical interaction between hydropower units and the power system. The work encompasses development of mathematical models, empirical methods for system identification, as well as numerical and experimental studies of hydropower generator and power system interaction. Two generator modelling approaches are explored: one based on electromagnetic field theory and the finite element method, and one based on equivalent electric circuits. The finite element model is adapted for single-machine infinite-bus simulations by the addition of a network equivalent, a mechanical equation and a voltage regulator. Transient simulations using both finite element and equivalent circuit models indicate that the finite element model typically overestimates the synchronising and damping properties of the machine. Identification of model parameters is performed both numerically and experimentally. A complete set of equivalent circuit parameters is identified through finite element simulation of standard empirical test methods. Another machine model is identified experimentally through frequency response analysis. An extension to the well-known standstill frequency response (SSFR) test is explored, which involves measurement and analysis of damper winding quantities. The test is found to produce models that are suitable for transient power system analysis. Both experimental and numerical studies show that low resistance of the damper winding interpole connections are vital to achieve high attenuation of rotor angle oscillations. Hydropower generator and power system interaction is also studied experimentally during a full-scale startup test of the Nordic power system, where multiple synchronised data acquisition devices are used for measurement of both electrical and mechanical quantities. Observation of a subsynchronous power oscillation leads to an investigation of the torsional stability of hydropower units. In accordance with previous studies, hydropower units are found to be mechanically resilient to subsynchronous power oscillations. However, like any other generating unit, they are dependent on sufficient electrical and mechanical damping. Two experimentally obtained hydraulic damping coefficients for a large Francis turbine runner are presented in the thesis.
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Grossman, Mark. "Task Interaction and Control System (TICS) /." Full text open access at:, 1987. http://content.ohsu.edu/u?/etd,140.
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Leo, de Belmont Laura Ana. "Seminole kinship system and clan interaction." Mendoza, República Argentina : Facultad de Filosofía y Letras, Universidad Nacional de Cuyo, 1985. http://catalog.hathitrust.org/api/volumes/oclc/16078022.html.
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POZZER, CESAR TADEU. "A SYSTEM FOR GENERATION, INTERACTION AND 3D VISUALIZATION OF STORIES FOR INTERACTIVE TV." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=6599@1.
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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICOFINANCIADORA DE ESTUDOS E PROJETOS
Esta tese visa o desenvolvimento de um ambiente integrado para o controle da geração e representação de histórias interativas dinâmicas. A geração é realizada por um processo de simulação, resultando em um conjunto de operações parcialmente ordenado que define o enredo da história. Esta história deve então ser representada graficamente por meio de um motor gráfico. Estão sendo utilizadas técnicas cinematográficas para capturar a essência das cenas, compostas por um ambiente virtual 3D, que possuem personagens e objetos. Para o desenrolar da história, os personagens, implementados como agentes reativos, interagem entre si em um ambiente multiagente e com a cena. Cada agente encapsula recursos que os permitem fazer a representação gráfica dos eventos típicos das histórias. A arquitetura como um todo é projetada para servir como meio de geração de conteúdo para a TV interativa.
This thesis aims at the development of an integrated tool for managing both the generation and representation of dynamic interactive stories (storytelling). The story generation is accomplished by a simulation process resulting in a set of partially ordered operations that define the plot of the story. This story should then be graphically represented by means of a 3D engine. It has been used cinematographic techniques to capture the essence of the scenes, which are composed by a virtual 3D environment, including characters and objects. Characters, implemented as reactive agents, interact among each other in a multi-agent system and with the scene to accomplish the plot of the narrative. Each agent encapsulates resources that allow them to graphically represent typical events of stories. The overall architecture is designed as a source for Interactive TV content.
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Georgiev, Nikolay. "Assisting physiotherapists by designing a system utilising Interactive Machine Learning." Thesis, Uppsala universitet, Institutionen för informatik och media, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447489.
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Millions of people throughout the world suffer from physical injuries and impairments and require physiotherapy to successfully recover. There are numerous obstacles in the way of having access to the necessary care – high costs, shortage of medical personnel and the need to travel to the appropriate medical facilities, something even more challenging during the Covid-19 pandemic. One approach to addressing this issue is to incorporate technology in the practice of physiotherapists, allowing them to help more patients. Using research through design, this thesis explores how interactive machine learning can be utilised in a system, designed for aiding physiotherapists. To this end, after a literature review, an informal case study was conducted. In order to explore what functionality the suggested system would need, an interface prototype was iteratively developed and subsequently evaluated through formative testing by three physiotherapists. All participants found value in the proposed system, and were interested in how such a system can be implemented and potentially used in practice. In particular the ability of the system to monitor the correct execution of the exercises by the patient, and the increased engagement during rehabilitative training brought by the sonification. Several suggestions for future developments in the topic are also presented at the end of this work.
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Thorpe, Christopher John. "Structural analysis of MHC : peptide interaction." Thesis, Birkbeck (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321649.
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Grange, Sébastien. "M/ORIS - Medical / Operating Room Interaction System /." Lausanne : EPFL, 2007. http://library.epfl.ch/theses/?nr=3798.
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Thèse Ecole polytechnique fédérale de Lausanne EPFL, no 3798 (2007), Faculté des sciences et techniques de l'ingénieur STI, Section de microtechnique, Institut de production et robotique IPR (Laboratoire de systèmes robotiques 2 LSRO2). Dir.: Roland Siegwart, Charles Baur.
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Andreetta, Filippo. "Serotonergic system and its interaction with neuroinflammation." Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3362/.
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Serotonin (5-HT) is a neurotransmitter that is mainly expressed in brain where serves a wide array of physiological and behavioural functions. Literature described that some mediators of inflammation (i.e. cytokines) have been implicated in the modulation of monoaminergic response and this may be associated with pathophysiology of depression and in the responsiveness of antidepressant treatment in both humans and animals (Capuron and Miller, 2011). A hypothesis suggests that cytokines may affect the serotonergic system through p38 MAP kinase dependent mechanisms particularly at the serotonin transporters (Zhu et al., 2006) and 5HT7 receptors (Lieb et al., 2005; Mahe et al., 2005). The aim of this study was to show the interaction of Interleukin 1β (IL-1β) or p38 MAP kinase on serotonin transporter (SERT) and 5HT7 receptors in cells lines and native tissue, highlighting the biochemical mechanism of this system. The IL-1β and p38 MAP kinase activator, anisomycin, did not show any effect on 5-HT uptake and p38 MAPK activation in rodent native brain tissue, in human platelets and in cell lines in contrast to literature reports (Zhu et al.,2010). A different method was then used in which a release of cytokines was induced directly in the rat brain through an i.c.v. LPS treatment. Although proinflammatory cytokines involved in the change of animal mood, such as IL-1ß and TNFα, showed a significant increase in cortex and striatum, a modulation of SERT activity in term of Km and Vmax was not detected, confirming again that no interaction between cytokines, p38 MAP kinase and SERT function in vitro nor in vivo was evident. In contrast, this study revealed a positive interaction between 5HT7 receptors and p38 MAP kinase in glia cells. However, this pathway was not present in cortical neurons where 5HT7 receptors did not activate p38 MAP kinase but instead increased the AMPAR subunit, GluR1 and CREB phosphorylation. The effect on GluR1 was reversed by the specific 5HT7 antagonist, SB258719, and the PKA inhibitor, H89, confirming the specificity of response for 5HT7 receptors and the involvement of PKA in the mediation of GluR1 phosphorylation. In conclusion, this study displayed a lack of interaction between IL-1β and p38 MAP kinase on rat SERT while highlighting the effect of 5HT7 receptors on p38 MAP kinase, with different functions between glial and neuronal cells. Noteworthy, this is the first report that showed a positive interaction between 5HT7 receptors and AMPA which stimulates new investigation into the role of 5HT7 receptors in neuronal plasticity.
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Kuschert, Gabriele Simone Viktoria. "Chemokines and their interaction with glycosaminoglycans." Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298530.
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Yong, Kin Fuai. "Emerging human-computer interaction interfaces : a categorizing framework for general computing." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90692.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2014.Cataloged from PDF version of thesis.
Includes bibliographical references (page 86).
Executive summary: The dominant design of Human-Computer Interface over last thirty years has been the combination of monitor, keyboard and mouse. However the constant miniaturization of IC and sensors and the availability of computing power has spurred incredible new dimensions of inputs (touch, gesture, voice, brain wave, etc.) and outputs (watch, glasses, phone, surface, etc.), which started the explosive growth of recombination of both inputs and outputs into new classes of devices. The design constraints have also noticeably shifted from technical to ergonomic and contextual. This thesis sets out to map these new interfaces to the use context in general computing and project the adoption path and the driving factors behind them. The theoretical foundation of this thesis is based on multiple technology innovation theories including the importance of Innovation and Technology Diffusion Models from Paul Geroski, Dominant Design from James Utterback, the Curse of Innovation from John Gourville and Lead User Innovation by Eric Von Hippel. System Architecture thinking, founded most notably by Ed Crawley and Olivier de Weck from MIT, is also applied to analyze the architecture of Human- Computer Interface. The study of Human-Computer Interface starts with a case study of the invention of the computer mouse - conceived in 1968 by Douglas Engelbart. A paper published by Engelbart compared different technologies and the mouse emerged as superior with lower fatigue and error rate yet a surprisingly short learning time. The mouse, however, was not popularized until Apple showcased the design with the first GUI1 on a personal computer on its Macintosh in 1984, and its subsequent mass adoption by Microsoft Windows in the late 1980s. The case study showed that even with the superior design of a specific HCI, a number of other factors, including holistic solution, killer application, market position and platform strategy, are required for successful adoption. The next chapter maps out developing Human-Computer Interface technologies and notable existing or developing products and their company background. The superiority of an interface depends on how well it fits into the inherent nature of a specific use context. The daily general computing domains of an average computer user include collaboration, productivity, media consumption, communication and augmentation. The clear distinction of the use context in each domain strongly correlates with the effectiveness of the Human-Computer Interface in each class of device. The chapter includes analysis of proposed frameworks that place HCI interface on a plot of interaction complexity against screen sizes. Several industry experts generally agreed on a few observations: the keyboard and mouse will remain as the primary input interface for the productivity domain, the growing importance of collaboration, the increasing emphasis on human-centered design, and the huge opportunity in the wearable market with a potential size of $50 billion. In conclusion, the projected future of adoption is: * The collaboration domain needs the combination of a low fatigue, high precision interface for productivity; a high freedom, low precision interface for creativity; and a large output screen for multiple collaborators. This will remain the frontier battleground for a variety of concepts from several giant players and niche players, each with a different competitive edge. * Productivity domain input interfaces will likely continue to be dominated by low fatigue, high precision interfaces that are not necessarily intuitive i.e. a keyboard and mouse. 3D manipulation will remain a niche interface only needed by specific industries, while a 3D general computing environment is unlikely to be realized in the short term. * The media consumption domain will be the major area of adoption for medium accuracy, highly intuitive interfaces, e.g. gesture and sound. Personal media consumption devices might be challenged by head-mounted display while group media consumption devices face an interesting challenge from bridging devices like Chromecast. * The communication domain needs an input interface that is fairly accurate and responsive, with just enough screen space. Voice recognition is rising fast to challenge typing. The dominating form factor will be the smartphone but challenged by glasses. * The augmentation domain needs an interface that is simple and fairly accurate. New input interfaces like brainwave, gaze detection, and muscle signal will be adopted here given the right context. Flexible OLED is likely to revolutionize both input and output interfaces for wearable devices. Product developers should choose technology according to their targeted domain and identify competitors using this framework. Killer applications should be developed early, internally or with partners, to ensure success, while platform strategy can leverage innovation of third-party developers to widen the application. During the course of research, other opportunities arising from the proliferation of computing are also identified in the areas of the Internet of Things, smart objects and smart healthcare. This thesis is based mainly in qualitative analysis due to the lack of comprehensive data on the new Human-Computer Interfaces. Future research can collect quantitative data based on the framework of the five domains of general computing activities and their categorical requirements. It is also possible to extend the model to other computing use cases, for example Gaming, Virtual Reality and Augmented Reality.
by Kin Fuai Yong.
S.M. in Engineering and Management
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Oyeyemi, Oyebode. "Modelling HIV-1 interaction with the host system." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/modelling-hiv1-interaction-with-the-host-system(41095e34-78dd-4b75-bd25-9695a4cc768f).html.
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Human immunodeficiency virus (HIV-1) is the pathogenic agent of HIV infection thatprecedes the total breakdown of cellular immunity, a condition known as acquiredimmunodeficiency syndrome (AIDS). The pandemic nature of the disease has promptedintense research into its biology. Already, much is known about HIV-1 infection, lifecycle,and progression to aids. Systems biology enables the combination of complex data fromthese studies into a framework where their effect on the various levels of cellularorganization (i.e. Pathways, cells, tissues, organs and the whole body) could be studied insilico. In this thesis, first, we reviewed our knowledge of the HIV-1 Human InteractionDatabase. We examined its contents and identified processes that HIV-1 was not previouslyknown to interact with. Then, we attempted an in silico dynamic model of HIV-1 interaction. We built a model of HIV-1 interaction with the CD4 T cell activation pathway comprised of137 nodes (16 HIV-1, 121 human) and 336 interactions. The model reproduced expectedpatterns of T cell activation. Using interaction graph properties, we identified 26 host cellfactors, including MAPK1&3, Ikkb-Ikky-Ikka and PKA, which contribute to the net activationor inhibition of viral proteins. By following a logical Boolean formalism, we identified 9 hostcell factors essential to the functions of viral proteins in the activation pathway. This wasthe first attempt to model dynamic viral-host interaction relationships. Then, we organize HIV-1 interacting host genes into modules to represent cellular processesneeded by the virus. We combined HIV-1 interactions with host gene GO annotations toclassify host genes according to these needed cellular processes. We obtained 201 modulesand found the same set of viral proteins do not interact with host genes having similarmodules suggesting intelligence in its co-ordination of host processes. This work is one of agrowing list that explores coordination of HIV-1 interactions. But more importantly, it would bebeneficial to functionally downsize the large dynamic HIV-1 interaction network. Finally, in our discussion, we discuss our results and suggest possible ways in which our workon dynamic models could be improved. This work is opening up a new field of systems virologythat studies the effect of viruses on the host in terms of its temporal and spatial aspects.
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Ford, Sarah Theresa. "Analysing doctor-patient interactions in oncology : the development of the medical interaction process system (MIPS)." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272373.
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Borumand, Maryam. "Interaction of prion protein with plasminogen activation system." Thesis, University of East Anglia, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439929.
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Casutt-Meyer, Salome. "Capnocytophaga canimorsus : interaction with the innate immune system /." Basel : [s.n.], 2009. http://edoc.unibas.ch/diss/DissB_8882.
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Hwang, Bohyun. "Water-Rock Interaction in the Coso Geothermal System." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1417724456.
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Laferrière, Pascal. "Instrumented Compliant Wrist System for Enhanced Robotic Interaction." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35502.
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This thesis presents the development of an instrumented compliant wrist mechanism which serves as an interface between robotic platforms and their environments in order to detect surface positions and orientations. Although inspired by similar existing devices, additional features such as noncontact distance estimations, a simplified physical structure, and wireless operation were incorporated into the design. The primary role envisioned for this mechanism was for enabling robotic manipulators to perform surface following tasks prior to contact as this was one requirement of a larger project involving inspection of surfaces. The information produced by the compliant wrist system can be used to guide robotic devices in their workspace by providing real-time proximity detection and collision detection of objects.
Compliance in robotic devices has attracted the attention of many researchers due to the multitude of benefits it offers. In the scope of this work, the main advantage of compliance is that it allows rigid structures to come into contact with possibly fragile objects. Combined with instrumentation for detecting the deflections produced by this compliance, closed-loop control can be achieved, increasing the number of viable applications for an initially open-loop system.
Custom fabrication of a prototype device was completed to physically test operation of the designed system. The prototype incorporates a microcontroller to govern the internal operations of the device such as sensor data collection and processing. By performing many computation tasks directly on the device, robotic controllers are able to dedicate more of their time to more important tasks such as path planning and object avoidance by using the pre-conditioned compliant device data.
Extensive work has also gone into the refinement of sensor signals coming from the key infrared distance measurement sensors used in the device. A calibration procedure was developed to decrease inter-sensor variability due to the method of manufacturing of these sensors. Noise reduction in the signals is achieved via a digital filtering process.
The evaluation of the performance of the device is achieved through the collection of a large amount of sensor data for use in characterisation of the sensor and overall system behavior. This comes in the form of a statistical analysis of the sensor outputs to determine signal stability and accuracy. Additionally, the operation of the device is validated by its integration onto a manipulator robot and incorporating the data generated into the robot’s control loop.
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Seraya, O. A. "Environmental-economy interaction within the environmental-economy system." Thesis, Вид-во СумДУ, 2007. http://essuir.sumdu.edu.ua/handle/123456789/17404.
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Zhen, Zhao. "The Qphyl System: a web-based interactive system for phylogenetic analysis." University of Sydney, 2008. http://hdl.handle.net/2123/2691.
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Master of SciencePhylogenetic tree reconstruction is a prominent problem in computational biology. Currently, all computational methods have their limitations and work well only for simple problems of small size. No existing method can guarantee that trees constructed for real-world problems are true phylogenetic trees for large and complex problems mainly because the existing computational models are not very biologically realistic. It has become a serious issue for many important real-life applications which often desire accurate results from phylogenetic analysis. Thus, it is very crucial to effectively incorporate multi-disciplinary analyses and synthesize results from various sources when answering real-life questions. In this thesis, a novel web-based phylogeny reconstruction system with a real-time interactive environment, called Qphyl (short for quartet-based phylogenetic analysis) is introduced. The Qphyl system uses a new interactive approach to enable biologists to greatly improve the final results through effectively dynamic interaction with the computation, e.g., to move the computation back and forth to different stages so users can check the intermediate results, compare results from different methods and carry out certain manual refinements using their biological domain-specific knowledge in the decision making on how a tree should be reconstructed. Currently the alpha version of this web-based interactive system has been released and accessible through the URL: http://ww-test.it.usyd.edu.au/sogrid/qphyl/.
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Lindh, Jens-Olof. "On observation of and interaction in open distributed systems /." Karlskrona : Blekinge Institute of Technology, 2006. http://www.bth.se/fou/Forskinfo.nsf/allfirst2/269f7f2e382a0fb1c12571e3002e0614?OpenDocument.
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Reeves, Deborah Edwards. "Interaction measures for nonsquare decentalized control structures." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/10206.
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Butterworth, Richard J. "A formal framework for the specification of interactive systems." Thesis, Loughborough University, 1997. https://dspace.lboro.ac.uk/2134/14163.
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We are primarily concerned with interactive systems whose behaviour is highly reliant on end user activity. A framework for describing and synthesising such systems is developed. This consists of a functional description of the capabilities of a system together with a means of expressing its desired 'usability'. Previous work in this area has concentrated on capturing 'usability properties' in discrete mathematical models. We propose notations for describing systems in a 'requirements' style and a 'specification' style. The requirements style is based on a simple temporal logic and the specification style is based on Lamport's Temporal Logic of Actions (TLA) [74]. System functionality is specified as a collection of 'reactions', the temporal composition of which define the behaviour of the system. By observing and analysing interactions it is possible to determine how 'well' a user performs a given task. We argue that a 'usable' system is one that encourages users to perform their tasks efficiently (i.e. to consistently perform their tasks well) hence a system in which users perform their tasks well in a consistent manner is likely to be a usable system. The use of a given functionality linked with different user interfaces then gives a means by which interfaces (and other aspects) can be compared and suggests how they might be harnessed to bias system use so as to encourage the desired user behaviour. Normalising across different users anq different tasks moves us away from the discrete nature of reactions and hence to comfortably describe the use of a system we employ probabilistic rather than discrete mathematics. We illustrate that framework with worked examples and propose an agenda for further work.
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Wellner, Pierre. "Statemaster : a user interface management system based on statecharts /." Online version of thesis, 1989. http://hdl.handle.net/1850/10447.
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Morris, John Morgan. "The effects of interaction factors in the transition from menus to commands." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/8222.
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Steinicke, Frank. "Universal interaction in virtual reality systems design of multimodal metaphors for generic interaction tasks." Saarbrücken VDM Verlag Dr. Müller, 2006. http://d-nb.info/986384976/04.
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Chen, Hsinchun, and Vasant Dhar. "Online Query Refinement on Information Retrieval Systems: A Process Model of Searched System Interactions." ACM, 1990. http://hdl.handle.net/10150/105597.
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Artificial Intelligence Lab, Department of MIS, University of ArizonaThis article reports findings of empirical research that investigated information searchers online query refinement process. Prior studies have recognized the information specialists' role in helping searchers articulate and refine queries. Using a semantic network and a Problem Behavior Graph to represent the online search our study revealed that searchers also refined their own queries in an online task environment. The information retrieval system played a passive role in assisting online query refinement, which was, however, one that confirmed Taylor's four-level query formulation model. Based on our empirical findings, we proposed using process model to facilitate and improve query refinement in an online environment. We believe incorporating this model into retrieval systems can result in the design of more "intelligent" and useful information retrieval systems.
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Bartkowski, Glenn D. (Glenn David) 1970. "Accounting for system level interaction in knowledge management initiatives." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/29160.
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Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2001.Includes bibliographical references (leaves 68-69).
An overview of the operation of a modem, high bypass ratio, dual spool turbofan engine is presented to identify the multitude of system level interactions that must be considered when developing such an engine. The Design Structure Matrix (DSM) is used to demonstrate how it maps these relationships and, if utilized in the right manner, can reduce the occurrence of escapes (i.e., a deliverable that does not meet customers' expectations). The context of this thesis is the complex system design, and development process, of a commercial aircraft gas turbine engine (specifically the Pratt & Whitney PW4000 engine family). Unlike previous gas turbine engine DSM work, the matrix created in this thesis is generated from the point of view of the Systems Engineering organizations at Pratt & Whitney. The sequenced matrix captures the non-local knowledge that is currently absent from Pratt & Whitney's existing knowledge management documentation. Testing the DSM against past instances of rework and unexpected design issues substantiates its validity as the basis for performing this function. Finally, examples are presented to demonstrate how the DSM can be used to prevent future escapes.
by Glenn D. Bartkowski.
S.M.
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Sheng, Kaijie. "Investigation of a New High-speed Tabletop Interaction System." Thesis, Uppsala University, Department of Information Technology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-129472.
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In this project, we built up a high speed interactive tabletop infrared tracking system, based on the existing Qualitrack system [1] [2]. This system can detect the position, orientation and state of each infrared emitting input device in real time. The output of Qualitrack is implemented according to standard TUIO protocol. Any applications software understanding TUIO protocol can be docked with Qualitrack smoothly.
Based on the documents of the existing system, we built up the whole system architecture, the infrared pen, the infrared air hockey paddle and corresponding application software for Qualitrack system. As an in-house contribution, we created two new input devices, namely the magnifier and the color filter, to enrich the input device types of Qualitrack system.
In order to explore the influence of tracking update rate on the user interaction performance, three user experimental tasks were designed and user studies were conducted. The corresponding user study application software was also developed.
Key words: tabletop system, infrared tracking, TUIO protocol, user study
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Corell, Mikael. "Neuron-glial Interaction in the Developing Peripheral Nervous System." Doctoral thesis, Uppsala universitet, Genetisk utvecklingsbiologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-157968.
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The nervous system, including the brain, is the most sophisticated organ in the mammalian body. In such a complex network, neuron-glial interaction is essential and controls most developmental processes, such as stem cell fate determination, migration, differentiation, synapse formation, ensheathment and myelination. Many of these events are critical for the developmental process and small errors can lead to growth retardation, malformation or disease. The understanding of the normal progress of nervous system development is fundamental and will help the discovery of new treatments for disease. This thesis discusses three types of neuron-glia interactions at different developmental stages; neural stem/progenitor cell (NSPC) differentiation, building and maintaining the structure of the sciatic nerve, and myelin formation. In Paper I we show that NSPCs, based upon their morphology and expression of specific protein markers, have the capacity to differentiate into cells of either the peripheral nervous system (PNS) or enteric nervous system (ENS) when grown with PNS or ENS primary cell cultures, or fed with conditioned medium from these. This indicates that soluble factors secreted from the PNS or ENS cultures are important for stem cell differentiation and fate determination. The adhesion protein neuronal cadherin (N-cadherin) is implicated in migration, differentiation and nerve outgrowth in the developing PNS. In Paper II N-cadherin was exclusively found in ensheathing glia (nonmyelinating Schwann cells, satellite cells and enteric glia) in contact with each other or with axons. Functional blocking of N-cadherin in dissociated fetal dorsal root ganglia (DRG) cultures led to a decrease in attachment between Schwann cells. N-cadherin-mediated adhesion of nonmyelinating Schwann cells may be important in encapsulating thin calibre axons and provide support to myelinating Schwann cells. In Paper III the inhibitory gamma aminobutyric acid (GABA) and GABAB receptors were studied in the Schwann cell of the adult sciatic nerve and DRG cultures. GABAB receptors were primarily expressed in nonmyelinating Schwann cells and protein levels decreased during development and myelination. Blocking the GABAB receptor in long-term DRG cultures led to decreased levels of mRNA markers for myelin. These results indicate that the GABA and GABAB receptors may be involved in Schwann cell myelination.
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Manresa, Yee Cristina Suemay. "Advanced and natural interaction system for motion-impaired users." Doctoral thesis, Universitat de les Illes Balears, 2009. http://hdl.handle.net/10803/9412.
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Human-computer interaction is an important area that searches for better and more comfortable systems to promote communication between humans and machines. Vision-based interfaces can offer a more natural and appealing way of communication. Moreover, it can help in the e-accessibility component of the e-inclusion. The aim is to develop a usable system, that is, the end-user must consider the use of this device effective, efficient and satisfactory. The research's main contribution is SINA, a hands-free interface based on computer vision techniques for motion impaired users. This interface does not require the user to use his upper body limbs, as only nose motion is considered. Besides the technical aspect, user's satisfaction when using an interface is a critical issue. The approach that we have adopted is to integrate usability evaluation at relevant points of the software development.
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Jofre-Bonet, Mireia. "Health care: interaction between public system and private sector." Doctoral thesis, Universitat Pompeu Fabra, 1998. http://hdl.handle.net/10803/7392.
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Esta tesis estudia la interacción entre el sistema público y el sector privado en la provisión de servicios de salud. Consta de una introducción y tres capítulos. El primero es teórico y utiliza un modelo de diferenciación vertical de producto donde el bien en cuestión es sanidad. Los consumidores difieren en su nivel de renta y la disposición a pagar de los menos ricos no cubre su coste marginal. La provisión mediante un oligopolio mixto con un agente público que maximiza el bienestar. El sector público proporciona servicios de menor calidad pero asequibles a toda la población y el privado cubre la demanda de calidad alta. El segundo capítulo es empírico, utiliza la Encuesta de Presupuestos Familiares 90-91 y analiza si incrementar el gasto público en sanidad provoca una expansión de los recursos globales dedicados a bienes de salud. El resultado es afirmativo. El incremento de gasto público en salud tiene un efecto sustitución pero no suficiente para contrarrestar la expansión del gasto.El tercer capítulo es empírico y estudia la calidad como anexo de unión entre proveedores público y privados. La base de datos utilizada es la Encuesta Nacional de Salud de 1993 y, complementariamente, la de presupuestos Familiares 90-91.
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Hermansson, Patrik. "Interaction and influences in an Open-Source eco system." Thesis, University of Skövde, School of Humanities and Informatics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-1322.
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The development of open source software has gone from a model characterized by skilled software developers that developed open source software for their own interest and their own needs to a model that is more business friendly and more attractive for companies and organizations. One new business model for open source software is the professional open source software model or OSS 2.0. The business model includes three roles: the open source project, the professional open source company and the user. This dissertation studies the relationship between these three roles and focuses on the development of the user role and how it may develop for a new user in a specific OSS ecosystem.
The roles in the eco system that has been studied are taken by the open source project Alfresco, the professional open source company Redpill and a user from a large international company, without any previous experience of open source software or the business model of professional open source. The result of the study showed a well developed eco system between the open source project and the professional open source company but a need of more information about the user’s role in it. Open source software is still seen by the user as an unsafe and unsecure alternative to the proprietary software available and more information about the business model of professional open source software and how the user can interact and influence the eco system is still needed.
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Viebahn, Cornelia Sabine. "Interaction between the immune system and liver progenitor cells." University of Western Australia. Biochemistry and Molecular Biology Discipline Group, 2009. http://theses.library.uwa.edu.au/adt-WU2010.0055.
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Liver progenitor cells (LPCs) play a major role in the regeneration process following chronic liver damage. LPCs can differentiate into hepatocytes and cholangiocytes and thus are capable of replenishing the damaged liver. Due to their plasticity and robust nature in culture systems, they are promising candidates for use in cell therapy. However, to be able to use LPCs as tissue regenerating stem cell-like cells in the clinic, we need to fully understand how they are controlled. Although a strong association between LPCs and inflammation has been shown in many chronic liver diseases, the role of the immune system in LPC-mediated hepatic regeneration is poorly understood. We hypothesise that specific immune cells and mediators are needed to induce the LPC compartment, and that these are common to the LPC response in different injury settings. Therefore, the present study focused on the characterisation of the inflammatory environment in the LPC response, which generates this niche. The aims of this study were (i) to identify the immune cells that are important for the LPC response, (ii) to define the cytokine profile and (iii) to determine the role of the cytokine producing cells during liver regeneration. To study hepatic inflammation following liver injury, a diet-induced model of liver injury (choline-deficient, ethionine-supplemented diet, CDE diet) was compared to two transgenic mouse models of immune-mediated hepatitis (Met-Kb, 178.3). Although all three models are characterised by hepatitis, histological analysis revealed that LPCs were only detectable in the CDE and Met-Kb livers. In the 178.3 model, livers regenerated from proliferating hepatocytes. An LPC response could not be induced in these mice even when liver damage was made more severe. In the other two models, LPC numbers increased over time showing the highest numbers one week after the peak of liver injury. LPCs were often found in close proximity to inflammatory cells, in particular macrophages.
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Mourad, Atallah. "Human interface and interaction in the WITS training system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0027/MQ50643.pdf.
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Curtis, John Chester. "Interaction of sensorimotor signals in the rat vibrissa system." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2008. http://wwwlib.umi.com/cr/ucsd/fullcit?p3307721.
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Thesis (Ph. D.)--University of California, San Diego, 2008.Title from first page of PDF file (viewed July 14, 2008). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 63-69).
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Ren, Kan. "System for intuitive interaction with large-scale visual databases." Thesis, University of Surrey, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540707.
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Campbell, Thomas J. "Interaction through the Shared Windowed Digital World (SWDW) system." Thesis, University of Essex, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387826.
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Figueiredo, Sara Cristina Albuquerque. "Development of a dialog system for interaction with robots." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/14030.
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Mestrado em Engenharia de Computadores e TelemáticaService robots operate in the same environment as humans and perform actions that a human usually performs. These robots must be able to operate autonomously in unknown and dynamic environments, as well as to maneuver with several people and know how to deal with them. By complying with these requirements, they are able to successfully address humans and fulfill their requests whenever they need assistance in a certain task. Natural language communication, including speech that is the most natural way of communication between humans, becomes relevant in the field of Human-Robot Interaction (HRI). By endowing service robots with intuitive spoken interfaces, the specification of the human required tasks is facilitated. However, this is a complicated task to achieve due to the resources involved in creating a sufficiently intuitive spoken interface and because of the difficulty of deploying it in different robots. The main objective of this thesis is the definition, implementation and evaluation of a dialogue system that can be easily integrated into any robotic platform and that functions as a flexible base for the creation of any conversational scenario in the Portuguese language. The system must meet the basic requirements for intuitive and natural communications, namely the characteristics of human-human conversations. A system was developed that functions as a base to give continuity to future work on Spoken Dialog Systems. The system incorporates the client-server architecture, where the client runs on the robot and captures what the user says. The client takes advantage on external dialogue management services. They are executed by the server, which processes the audio obtained, returning an appropriate response given the context of the dialogue. The development was based on a critical analysis of the state of the art in order for the system to be as faithful as possible to what is already done. Through the evaluation phase of the system, it was managed to obtain by few volunteers the conclusion that the main objective was accomplished: a base system was created that is flexible enough to explore different contexts of conversation, such as interacting with children or providing information on a university environment.
Os robôs de serviço operam no mesmo ambiente dos humanos e executam ações que um humano normalmente executaria. Estes robôs devem ser capazes de operar de forma autónoma em ambientes desconhecidos e dinâmicos, assim como de manobrar em ambientes com várias pessoas e de saberem lidar com elas. Ao respeitarem estes requisitos, conseguirão abordar com sucesso os humanos e cumprir as suas solicitações sempre que estes precisem de assistência em alguma tarefa. A comunicação por linguagem natural, nomeadamente a fala que é a forma mais abrangente de comunicação entre humanos, torna-se relevante na área da Interação humano-robô (IHR). Ao dotar os robôs de serviço com sistemas de voz intuitivos facilita-se a especificação das tarefas a realizar. No entanto, é uma tarefa complicada de se realizar devido aos recursos envolvidos na criação de uma interação suficientemente intuitiva e devido à dificuldade de funcionar em diversos robôs. O objetivo principal deste trabalho é a definição, implementação e avaliação de um sistema de diálogo que seja de fácil integração em qualquer sistema robótico e que funcione como uma base flexível para qualquer cenário de conversação na língua Portuguesa. Deve obedecer a requisitos base de comunicação intuitiva e natural, nomeadamente a características de conversas entre humanos. Foi desenvolvido um sistema que funciona como uma base para dar continuidade a trabalho futuro em sistemas de diálogo. O sistema incorpora a arquitetura cliente-servidor onde o cliente é executado no robô e capta o que o utilizador diz. O cliente tira partido de serviços de gestão de diálogo externos ao robô, executados pelo servidor, que processa o áudio obtido, devolvendo uma resposta ao cliente adequada ao contexto do diálogo. O desenvolvimento foi baseado numa análise crítica do estado da arte para se tentar manter fiel ao que já foi feito e de forma a se tomarem as principais decisões durante a implementação. Mediante a fase de avaliação do sistema, tanto a nível do ponto de vista da interação como do programador, conseguiu-se obter por parte de alguns voluntários que o objetivo principal foi cumprido: foi criada uma base suficientemente flexível para explorar diferentes contextos de conversação, nomeadamente interagir com crianças ou fornecimento de informações em ambiente universitário.
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Uddin, Amad. "Development of an integrated interface modelling methodology to support system architecture analysis." Thesis, University of Bradford, 2016. http://hdl.handle.net/10454/15905.
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This thesis presents the development and validation of a novel interface modelling methodology integrated with a system architectural analysis framework that emphasises the need to manage the integrity of deriving and allocating requirements across multiple levels of abstraction in a structured manner. The state of the art review in this research shows that there is no shared or complete interface definition model that could integrate diverse interaction viewpoints for defining system requirements with complete information. Furthermore, while existing system modelling approaches define system architecture with functions and their allocation to subsystems to meet system requirements, they do not robustly address the importance of considering well-defined interfaces in an integrated manner at each level of systems hierarchy. This results in decomposition and integration issues across the multiple levels of systems hierarchy. Therefore, this thesis develops and validates following: -Interface Analysis Template as a systematic tool that integrates diverse interaction viewpoints for modelling system interfaces with intensive information for deriving requirements. -Coupling Matrix as an architecture analysis framework that not only allocates functions to subsystems to meet requirements but also promotes consistent consideration of well-defined interfaces at each level of design hierarchy. Insights from the validation of developed approach with engineering case studies within an automotive OEM are discussed, reflecting on the effectiveness, efficiency and usability of the methods.
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Huang, Shan. "Interaction between biomaterials and innate immunity with clinical implications." Doctoral thesis, Linnéuniversitetet, Institutionen för kemi och biomedicin (KOB), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-47391.
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Today there is an increasing clinical demand and expectation of patients for biomaterials, which underscores the importance of discovering the correlations between biomaterials and biological systems, especially blood. When an artificial material makes contact with blood, the first event is a rapid adsorption of plasma protein on the material surface, on top of which the innate immune system is triggered, with potentially detrimental consequences. The work presented in this thesis, reported in four papers, was designed to investigate complications associated with (a) biomaterial-induced immune systems, including activation mechanisms and crosstalk between cascades on the biomaterial surface, and with (b) clinical investigations. In Paper I and Paper II, a series of studies led to the development of a direct prediction of the subsequent biological events based on the pattern of initially bound proteins. A reciprocal relationship was demonstrated between activation of the contact system and the complement system when they were induced on artificial material surfaces. Based on these studies, a robust and simple method for biocompatibility testing was proposed and validated, yielding high specificity and sensitivity when compared to today’s gold standard. Paper III investigated biomaterial-induced activation of complement and leukocytes in dialysis treatment-related conditions. The results suggested that citrate is more biocompatible than the conventionally used acetate. This reduction in activation could be further enhanced with higher citrate concentrations, suggesting that dialysis fluid containing citrate is a promising alternative to acetate dialysis fluid. Paper IV investigated complement initiation mechanisms with clinical implications. An experimental system was set up to revisit the initiation of the complement alternative pathway, and correlations were found between chaotropic or nucleophilic agents and iC3 generation under physiologically relevant conditions. A clinical study of hepatic encephalopathy patients indicated a direct correlation between elevated plasma ammonia and iC3 formation, as well as with complement activation in vivo. Taken together, these studies have provided a model for a robust biomaterial test and have investigated biomaterial-induced complications in the fluid phase in clinically related conditions; furthermore, the basic mechanisms of complement activation have been dissected in relation to disease symptoms. Keywords: Complement system, contact system, blood, biomaterials, biocompatibility, in vitro screening, iC3, dialysis
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Bierz, Torsten. "Intuitive interaction for immersive visualization systems." München Verl. Dr. Hut, 2008. http://d-nb.info/989219283/04.
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Sun, Jun. "User readiness to interact with information systems - a human activity perspective." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4316.
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This study focuses on how and why people become ready to interact with certain
information systems (IS) based on their previous experiences with the same and/or
similar systems. User-system interaction can be regarded as a mediated and collaborative
human activity between a user and a system with the motive of transforming raw
information into useful outcome. Using Activity Theory as a paradigm, this study
conceptualizes a user-system interaction model that specifies the mediating relationships
involved.
Based on the user-system interaction model, this study proposes a psychological
construct, Information System Interaction Readiness (ISIR), that indicates how an
individual is prepared and willing to interact with a system within a user context. This
construct advances a developmental view of how previous IS experiences may affect
user future behavior. Compared with other constructs as predictors of user behavior,
such as computer self-efficacy and intention to use, ISIR takes how IS user behavior is
mediated into account. To operationalize and measure the ISIR construct, this study develops a
measurement instrument for ISIR using the technique of facet analysis and the semantic
differential scale type. To explore how user experiences with a system lead to the
formation of ISIR, this study identifies the psychological antecedents of ISIR. This
enables the discussion of how general IS capabilities, including interactivity,
personalization and context-awareness, may affect ISIR through these antecedents.
Because ISIR is a user-, system- and context-specific construct, this study also
identifies and discusses the personal and situational factors that may affect ISIR. Putting
all these relationships together results in a research framework of ISIR. To validate the
ISIR measurement instrument and test the ISIR research framework, several laboratory
studies were conducted. The results indicated that the ISIR instrument was valid and the
ISIR framework was sound. Finally, the contributions and limitations of this study are
discussed.
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Reichelt, Toni. "A Model Driven Approach for Service Based System Design Using Interaction Templates." Doctoral thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-85986.
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Based on the increasing complexity of modern avionics, the associated system design processes moved towards Model Driven Architecture (MDA) based processes. Additionally, the demand for higher system autonomy features requires means to further modularise mission systems and to define and establish interactions among the systems’ individual components. Therefore, the ideas of service-oriented computing are currently adapted to established, model driven design processes. With respect to modelling interactions for service components, current approaches are limited to only a fixed set of communication primitives, restricting a service designer’s expressiveness to specify service interaction. In consequence, interaction patterns not included in this basic set have to be reflected in application code, mangling application and communication logic. Furthermore, when service functionality relies on communication semantics which are not provided by the underlying set of primitives, additional emulation behaviour has to be added to the service which makes this mangling even worse. Platform independence is reduced as services can not easily be ported to platforms not natively supporting the selected primitives which contradicts the ideas of model-driven development.
Addressing these limitations, this thesis proposes a new model-driven service development process based on Interaction Templates (ITs), promoting interactions among service participants to first class modelling entities. The process focuses on modelling the interactions among service participants. Interaction semantics are explicitly specified in models, beyond pure stereotyping, and gain increased platform independence for services with respect to communication. The process exploits automated Model-to-Model (M2M) and Model-to-Text (M2T) transformations to assist service implementation and to automatically derive interaction realisations on concrete target platforms. This allows for easy replacement and inter-mixing of communication middleware to realise a service’s interactions. This way, services become independent of the underlying communication primitives by only relying on ITs and not platform primitives which are hidden behind ITs. In turn, realising ITs on concrete platforms is not affected by their utilisation for service interaction.
Beside the novel modelling process itself, the presented work defines a Unified Modeling Language (UML) profile, referred to as UML Profile for Interaction-centric Services (UP4IS), which directly supports the adaptation of standard UML language constructs and tools for the proposed modelling approach. The whole development process is demonstrated via the specification of a simple video recording systems consisting of two services.
The services themselves are based on a representative IT library which forms an essential part of the presented case study. Using these service and IT models, the thesis emphasises the necessary model transformation and code generation steps to derive service implementations based on the abstract models.
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Sun, Bo. "Modelling of Interaction Units." Thesis, Linköping University, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2859.
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Developing a model of a service system and mobile units including cellphone, PDA, Laptop is an important preliminary step of designing the systems which could provide these units some convenient and entertainment services through common short range communication like blue tooth, wireless LAN, etc.
In this project, an ontology is created to represent this model. Meanwhile, some basic service rules are also programmed and combined with this ontology can be used to simulate some interactions between items inside this model.
The description of this model (ontology) has been made through Protégé and demonstrated by using its graphical interface. The rules have been created by using Jess and implemented with the ontology by using JessTab.
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Jones, Julian Lloyd. "Iterative development, system design and psychological investigation." Thesis, University of York, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280382.
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Shi, Jianguo. "Interaction of human CD23 with IgE and CD21." Thesis, King's College London (University of London), 1997. https://kclpure.kcl.ac.uk/portal/en/theses/interaction-of-human-cd23-with-ige-and-cd21(373685f2-b918-4cae-9404-c10d226ff134).html.
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Khan, Muhammad Sikandar Lal. "Enabling physical action in computer mediated communication : an embodied interaction approach." Licentiate thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-108569.
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Lindberg, Lena. "Usability in a clinical context: Redesigning the user interface of a gait analysis system." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-135946.
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Gait analysis can be described as a study of human walking patterns. This is very useful in health care, since gait analysis can reveal important information about a patient, and be an aid in diagnosis and rehabilitation. Today gait analysis is done either by qualitative visual observation of the patient, or in resource demanding and advanced laboratory settings. Many studies have been done in the search for new technical solutions that enables quantitative gait analysis outside of the laboratory. The goal of this thesis was to evaluate the usability of a new gait analysis system and to find out how the user interface could be better adapted to the end user’s needs and goals. This was done by defining and using suitable methods for learning about the users, evaluating the system and by defining usability in a clinical setting. A redesigned prototype was then developed and tested. It was found that the original user interface had many usability issues and was in need of better adaption to the intended user group. Through user research personas and key user needs could be determined that became the basis for the design work, along with guidelines from previous studies within the field. The redesigned prototype was tested on potential end users. It was in this study determined that semi-structured interviews are suitable for learning about the users. Usability evaluation should preferably be done using a combination of evaluation that involves real end users and evaluation by usability experts. Guidelines for usability in clinical systems could also be defined. Considering the redesigned prototype, the users saw a great potential, and could see themselves using it in the future. The testing determined that the redesigned prototype managed to solve many of the usability issues found in the original design.
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Efosa, Alohan. "Building a Student Information System." Thesis, Mittuniversitetet, Avdelningen för informations- och kommunikationssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-26013.
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In this project, I intend to design a Student Information System (SIS) that will be user-friendly and more diverse for prospective users of this platform. This application will be similar to most existing platforms such as OSIS-BSU (Online Student Information System of Benguet State University), which has a lot of interesting features for both students and teachers. In this SIS the organization or school can efficiently create, store, retrieve, delete or update student academic and information records. My main goal is to generate and improve new knowledge and promote the usage of e-learning in higher institutions. The method used to achieve this set will be done through prototyping based on paper, a survey and a literature/scientific study. The theoretical aspect consists of scripting programming languages that are processes on a server and embedded into HTML. The result was achieved through accurate evaluation of collected data through a conducted survey. The survey confirms that the new improved SIS will not only bring dynamic changes, but also create room for e-learning environment in higher institutions in Nigeria.
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Hjalmarsson, Anna. "Human interaction as a model for spoken dialogue system behaviour." Doctoral thesis, KTH, Tal-kommunikation, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-24258.
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This thesis is a step towards the long-term and high-reaching objec-tive of building dialogue systems whose behaviour is similar to a human dialogue partner. The aim is not to build a machine with the same conversational skills as a human being, but rather to build a machine that is human enough to encourage users to interact with it accordingly. The behaviours in focus are cue phrases, hesitations and turn-taking cues. These behaviours serve several important communicative functions such as providing feedback and managing turn-taking. Thus, if dialogue systems could use interactional cues similar to those of humans, these systems could be more intuitive to talk to. A major part of this work has been to collect, identify and analyze the target behaviours in human-human interaction in order to gain a better understanding of these phenomena. Another part has been to reproduce these behaviours in a dialogue system context and explore listeners’ perceptions of these phenomena in empirical experiments. The thesis is divided into two parts. The first part serves as an overall background. The issues and motivations of humanlike dialogue systems are discussed. This part also includes an overview of research on human language production and spoken language generation in dialogue systems. The next part presents the data collections, data analyses and empirical experiments that this thesis is concerned with. The first study presented is a listening test that explores human behaviour as a model for dialogue systems. The results show that a version based on human behaviour is rated as more humanlike, polite and intelligent than a constrained version with less variability. Next, the DEAL dia-logue system is introduced. DEAL is used as a platform for the re-search presented in this thesis. The domain of the system is a trade domain and the target audience are second language learners of Swedish who want to practice conversation. Furthermore, a data collection of human-human dialogues in the DEAL domain is presented. Analyses of cue phrases in these data are provided as well as an experimental study of turn-taking cues. The results from the turn-taking experiment indicate that turn-taking cues realized with a di-phone synthesis affect the expectations of a turn change similar to the corresponding human version. Finally, an experimental study that explores the use of talkspurtinitial cue phrases in an incremental version of DEAL is presented. The results show that the incremental version had shorter response times and was rated as more efficient, more polite and better at indicating when to speak than a non-incremental implementation of the same system.QC20100830