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Alam, Kazi Masudul. "Towards Diverse Media Augmented E-Book Reader Platform." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22884.
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In order to leverage the use of various modalities such as audio-visual-touch in instilling learning behaviour, we present an intuitive approach of annotation based hapto-audio-visual interaction with the traditional digital learning materials such as eBooks. By integrating the traditional home entertainment system and respective media in the user's reading experience combined with haptic interfaces, we examine whether such augmentation of modalities influence the user's reading experience in terms of attention, entertainment and retention. The proposed Haptic E-Book (HE-Book) system leverages the haptic jacket, haptic arm band as well as haptic sofa interfaces to receive haptic emotive signals wirelessly in the form of patterned vibrations of the actuators and expresses the learning material by incorporating audio-video based augmentation in order to pave ways for intimate reading experience in the popular eBook platform. We have designed and developed desktop, mobile/tablet based HE-Book system as well as a semi-automated annotation authoring tool. Our system also supports multimedia based diverse quiz augmentations, which can help in learning tracking. We have conducted quantitative and qualitative tests using the developed prototype systems. We have adopted the indirect objective based performance analysis methodology, which is commonly used for multimedia based learning investigation. The user study shows that, there is a positive tendency of accepting multimodal interactions including haptics with traditional eBook reading experience. Though our limited number of laboratory tests reveal, that haptics can be an influencing media in eBook reading experience, but it requires large scale real life tests to provide a concluding remarks.
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Horne, J. M. "The impact of diverse generation mix on power system stability." Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557629.
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Environmental drivers are the dominant reason for the current trend towards combined cycle gas turbine and wind turbine plant for new power stations. The result is a net shift in the plant mix away from traditional thermal stations. As the percentage of 'new' generation types increases, the effect on the dynamic performance of the power system needs to be investigated and quantified, and mitigating measures taken where necessary. This thesis, part funded by SONI Ltd (the system operator in Northern Ireland), has taken the two area Irish power system as a basis for this research. The focus is on the cumulative effects of increasing generation from combined cycle gas turbine and wind turbine plant on frequency and small signal stability. The research conducted has concluded that the introduction of large volumes of gas turbine plant does affect the system dynamics, but by far the greatest change for system operators will be the introduction of significant coverage of demand from wind powered generation. The reason is due to the introduction of widespread solid-state converter technology utilised in full converter and doubly fed induction generator wind turbines. In contrast, the gas turbine effects on a system relate to different dynamics of directly connected synchronous machines, which are well understood, and although they need to be considered, pose less of a technical challenge to manage. In addition to establishing an understanding of the major issues impacting on power systems of the future, this thesis has developed novel methods for power system stabiliser performance verification, and provision of high frequency response from wind turbine plant. These are required to cope with the rapid variation in plant mix and corresponding impact on system stability of networks into the future. Both methods are now in use with National Grid, the Great Britain transmission system operator.
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Zhang, Zhaoyuan M. Eng Massachusetts Institute of Technology. "A new authoring system for diverse data visualization at scale." Thesis, Massachusetts Institute of Technology, 2021. https://hdl.handle.net/1721.1/130710.
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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, February, 2021Cataloged from the official PDF of thesis.
Includes bibliographical references (page 37).
Kyrix is a platform used to create a wide range of data visualizations with large amounts of data. In the current system, several hundred lines of JavaScript are required to create a visualization in Kyrix. In order to greatly reduce this barrier of entry and provide a more intuitive user experience, we have created a new authoring system which features a graphical user interface. This authoring system supports all components of Kyrix, with the user interface centering around the five main components: canvases, layers, transforms, views, and jumps. Kyrix authors can add new components, edit existing components, and fully customize a component's parameters. It also provides a hierarchical overview of all the components in the current visualization, as well as a rendered view of the visualization. While the design of this authoring system is fairly simple, it includes key design choices that greatly enhance the experience of writing a Kyrix application, and is unique in its ability to support a system that produces such diverse visualizations.
by Zhaoyuan Zhang.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
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Ben, Hamouda-Guichoux Fabrice. "Diverse modules and zero-knowledge." Thesis, Paris Sciences et Lettres (ComUE), 2016. http://www.theses.fr/2016PSLEE022/document.
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Les smooth (ou universal) projective hash functions ont été introduites par Cramer et Shoup, à Eurocrypt'02, comme un outil pour construire des schémas de chiffrement efficaces et sûrs contre les attaques à chiffrés choisis. Depuis, elles ont trouvé de nombreuses applications, notamment pour la construction de schémas d'authentification par mot de passe, d'oblivious transfer, de signatures en blanc, et de preuves à divulgation nulle de connaissance. Elles peuvent êtres vues comme des preuves implicites d'appartenance à certains langages. Un problème important est de caractériser pour quels langages de telles fonctions existent.Dans cette thèse, nous avançons dans la résolution de ce problème en proposant la notion de diverse modules. Un diverse module est une représentation d'un langage, comme un sous-module d'un module plus grand, un module étant un espace vectoriel sur un anneau. À n'importe quel diverse module est associée une smooth projective hash function pour le même langage. Par ailleurs, presque toutes les smooth projective hash functions actuelles sont construites de cette manière.Mais les diverse modules sont aussi intéressants en eux-mêmes. Grâce à leur structure algébrique, nous montrons qu'ils peuvent facilement être combinés pour permettre de nouvelles applications, comme les preuves implicites à divulgation nulle de connaissance (une alternative légère aux preuves non-interactives à divulgation nulle de connaissance), ainsi que des preuves non-interactives à divulgation nulle de connaissance et one-time simulation-sound très efficaces pour les langages linéaires sur les groupes cycliquesSmooth (or universal) projective hash functions were first introduced by Cramer and Shoup, at Eurocrypt'02, as a tool to construct efficient encryption schemes, indistinguishable under chosen-ciphertext attacks. Since then, they have found many other applications, including password-authenticated key exchange, oblivious transfer, blind signatures, and zero-knowledge arguments. They can be seen as implicit proofs of membership for certain languages. An important question is to characterize which languages they can handle.In this thesis, we make a step forward towards this goal, by introducing diverse modules. A diverse module is a representation of a language, as a submodule of a larger module, where a module is essentially a vector space over a ring. Any diverse module directly yields a smooth projective hash function for the corresponding language, and almost all the known smooth projective hash functions are constructed this way.Diverse modules are also valuable in their own right. Thanks to their algebraic structural properties, we show that they can be easily combined to provide new applications related to zero-knowledge notions, such as implicit zero-knowledge arguments (a lightweight alternative to non-interactive zero-knowledge arguments), and very efficient one-time simulation-sound (quasi-adaptive) non-interactive zero-knowledge arguments for linear languages over cyclic groups
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Lawrie, Anthony Thomas. "The effect of diverse development goals on computer-based system dependability." Thesis, University of Newcastle Upon Tyne, 2006. http://hdl.handle.net/10443/1992.
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Society's increasing dependence upon software control and information process- ing provision has demanded comparable increases in software dependability. While the existing software dependability approach has resulted in significant improve- ments, its focus is heavily aimed towards achieving software dependability via redundant fault-tolerant mechanisms built into the software artifact to provide error-control in the presence of activated faults. Less emphasis appears to have been placed upon how software dependability can also be promoted through a fault-avoidance approach in the software creation process by incorporating hu- man redundancy and diversity. In this thesis, a process intervention which can potentially improve fault-avoidance is considered. This involves the setting of diverse development goals within important generic computer-based system con- texts in order to increase detection of potentially harmful assumptions which can result in subtle systemic conflicts that can undermine the dependability of the re- sultant artifact during the early development phases of requirements, specification and design. A search theoretic simulation model is progressed and developed to capture some of the important dynamics involved. The eventual outputs of the simulation model indicate that increased fault coverage and sensitivity can be ob- tained through the setting of diverse development goals during the early phases of software development.
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Djordjevic, Nikola. "Efficiency of the Hydronic System used for the Space-Heating of Passive Envelopes." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19402.
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The aim of this thesis is to determine the efficiency of the hydronic heating system implemented in building with passive envelopes. Thermal losses and energy consumption of the pump are relative values for determining the efficiency.The first step towards this aim is to provide theoretical background for better understanding of the hydronic system. The advantages of this system are also presented.Good knowledge of hydronic systems, first of all, modes of transport of the work fluid and heat distribution into the space, makes a good basis for the next step- designing the system.Once the system is designed, it is possible to create mathematical model. This model together with the input values given enables creation and a running of a simulation program.In the end the results from the simulation are obtained for a typical Norwegian house which satisfies recommendation for the passive house concept.The analyses of our results shows, in spite of the heat losses from the pipes and pump energy consumption, it is feasible to fulfill the prescribed limitations regarding the Passive house energy consumption. Unfortunately, the heat losses values are not negligible and it will eventually disturb thermal comfort.The method derived in this report as well as the simulation program presented can serve as a starting point for future investigation of an assortment of hydronic systems variations. One of the logical choices is certainly a system with insulated pipes. Such system could provide the key advantage of hydronic systems compared to other heating systems. In that way they could present themselves as the best heating solution for future buildings with passive envelopes.
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Patel, Asha K. "Chemically diverse polyacrylate and polyacrylamide surfaces for human cardiomyocyte culture and their effect on phenotype." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/39144/.
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Human pluripotent stem cell (hPSC) derived cardiomyocytes can provide robust in vitro models for pharmaceutical drug screening and modelling cardiac disease. To fully realise these potentials, hPSC-cardiomyocytes must be reproducibly cultured to a more mature state than has thus far been achieved. Defined and well controlled culture conditions underpin the ability to derive hPSC-cardiomyocytes of consistent quality. These include cell source, culture medium and substrate. This thesis is concerned with the latter; culture substrates are currently biological in nature creating inherent variability in culture conditions. There is limited knowledge on the interaction between cardiomyocytes and synthetic, non-biological substrates making rational design of materials impractical. To aid discovery of novel culture substrates, 115 polyacrylate and polyacrylamide substrates were microarrayed and investigated using a parallel screening approach. The use of polyacrylates and polyacrylamides as biomaterials has been demonstrated previously, including contact lenses, bone cements and hydrogels to support cells. The diverse chemistry exhibited across the range of polymers enables modelling of structure-activity relationships between substrate chemistry and cardiomyocyte behaviour. Cardiomyocytes derived from human embryonic stem cells (hESC) were cultured on the microarrays in the presence and absence of serum. Attachment density (nuclei count via DAPI staining) and cardiomyocyte spread (surface area using sarcomeric α-actinin immunostaining) on each substrate was acquired by automated fluorescence microscopy and image analysis software. From this primary screen, 70 % of polymers were found to support cardiomyocytes adhesion in serum conditioned arrays, BM34 (fufuryl methacrylate) supported the highest relative cell density (0.59 ±0.28) and also the largest cell size (1364 ±937 µm2), which was comparable to gelatin control. In serum free conditions, only 10 % of polymers supported cardiomyocyte attachment. The highest relative cell density was on AM38 (Dimethylamino-propyl acrylate) and largest cell size on BM49 (Tert-butylamino-ethyl methacrylate), 274 ±75 µm2, which was significantly lower than cell density and cell area (2019 ±596 µm2) on gelatin control. To investigate if synergy exists between polymers that enable adhesion in serum free conditions and those that support larger cell areas in serum conditioned arrays, 24 polymers were mixed pair-wise to form second generation microarrays comprising of 576 co-polymers. This diverse library enabled unique combinations of chemical moieties to be explored and co-polymers were found to have a greater proportion (74 %) that supported cardiomyocyte attachment in serum free conditions, largest average cell size was now 1089 ±260 µm2 on BM80/AM64 (Methacryloyloxy)ethyl acetoacetate/ Hexadecafluoro-9-(trifluoromethyl)decyl acrylate). Five co-polymers were chosen to perform more detailed characterisation of cardiomyocytes cultured on them for 5 and 25 days. Electrophysiological profiling and quantification of myofibril organisation identified co-polymers AD17/BM54 (Hexanediol ethoxylate diacrylate/ Ethoxyethyl methacrylate) and BM80/AD17 to be comparable to control gelatin. Partial least squares multivariate regression analysis correlated chemical species from the polymeric substrate, identified using time of flight secondary ion mass spectrometry, with cardiomyocyte response and identified moieties beneficial or detrimental for cardiomyocyte adhesion and cell area. This may aid rational design of tailor-made non-biological substrates for cell culture. In summary, the parallel screening of co-polymers of acrylates and acrylamides has been the first step in a discovery process of lead materials capable of progressing the culture of cardiomyocytes in more reproducible, economical and defined conditions. Only five substrates were analysed in detail, leaving a large library of co-polymers worthy of further investigation, including the physical properties of the polymers that need to be considered for practical use of the polymers in culture.
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Solis, Beatriz Maria. "Medi-Cal managed care enrollees diverse experiences and perceptions about the health care system /." Diss., Restricted to subscribing institutions, 2007. http://proquest.umi.com/pqdweb?did=1464129111&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
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Suetsugu, Kenji. "Diverse interactions of heterotrophic plants with their hosts, pollinators and seed dispersers." Kyoto University, 2014. http://hdl.handle.net/2433/192205.
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Kyoto University (京都大学)0048
新制・課程博士
博士(人間・環境学)
甲第18605号
人博第701号
新制||人||167(附属図書館)
26||人博||701(吉田南総合図書館)
31505
京都大学大学院人間・環境学研究科相関環境学専攻
(主査)教授 加藤 眞, 教授 市岡 孝朗, 教授 瀬戸口 浩彰, 教授 宮本 嘉久, 教授 新宮 一成
学位規則第4条第1項該当
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Niesner, Bradley (Bradley Joseph). "Using the Cre-loxP system to randomize target gene expression states and generate diverse phenotypes." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81684.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2013.Title as it appears in MIT Commencement Exercises program, June 2013: Generation of phenotypic diversity in yeast using promoter inversion through Cre-lox recombination. Page 84 blank. Cataloged from PDF version of thesis.
Includes bibliographical references.
Modifying the expression of multiple genes enables both deeper understanding of their function and the engineering of complex multigenic cellular phenotypes. However, deletion or overexpression of multiple genes is typically laborious and involves multiple sequential genetic modifications. Here we describe a strategy to randomize the expression state of multiple genes in S. cerevisiae using Cre-loxP recombination. By inserting promoters flanked by inverted loxP sites in front of a gene of interest we can randomly alter its expression by turning it OFF or ON, or between 4 distinct expression states. We show at least 6 genes can be randomized independently and argue that using orthogonal loxP sites and an additional recombinase should increase this number to at least 30. Finally, we show how combining this strategy with mating allows easy introduction of native regulation as an additional expression state and use this to probe the role of 4 different enzymes involved in base excision repair in tolerance to methyl methane sulfonate (MMS), a genotoxic DNA alkylating agent. The set of vectors developed here can be used to randomize the expression of both heterologous genes and endogenous genes, and could immediately prove useful for metabolic engineering in yeast. Because Cre-loxP recombination works in many organisms, this strategy should be readily extendable.
by Bradley Niesner.
Ph.D.
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Flemke, Kimberly Renee. "Women's Experiences of Rage towards their Intimate Partners: Diverse Voices within the Criminal Justice System." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/26422.
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A multi-method study investigating incarcerated women’ s experiences of rage towards their intimate partners was conducted. The sample was drawn from a Philadelphia prisonâ s recovery unit for women. Phenomenological and feminist critical theory perspectives guided the study; these combined approaches captured the essence of rage, while also offering a critical analysis for understanding complexities involved in the cultivation of rage. Three primary forms of data collection methods were used: (a) the Aggression Questionnaire, which was completed by 60 inmates; (b) a Demographic Worksheet, which was completed by 46 inmates and used to screen for subsequent interviews; and (c) in-depth interviews, which was completed by 37 women. Focus groups were used to debrief participants at the completion of the study. Results indicated rage as a distinct experience from anger. Past sources of emotional pain, embedded within shame and trauma, were revealed as fueling current actions of rage. Links between womenâ s social location, their experiences of rage, and their involvement within the criminal justice system were revealed.Ph. D.
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Stepien, Hubert, and Martin Bilger. "Diverse Time Redundant Triplex Parallel Convolutional Neural Networks for Unmanned Aerial Vehicle Detection." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-54596.
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Safe airspace of airports worldwide is crucial to ensure that passengers, workers, and airplanes are safe from external threats, whether malicious or not. In recent years, several airports worldwide experienced intrusions into their airspace by unmanned aerial vehicles. Based on this observation, there is a need for a reliable detection system capable of detecting unmanned aerial vehicles with high accuracy and integrity. This thesis proposes time redundant triplex parallel diverse convolutional neural network architectures trained to detect unmanned aerial vehicles to address the aforementioned issue. The thesis aims at producing a system capable of real-time performance coupled with previously mentioned networks. The hypothesis in this method will result in lower mispredictions of objects other than drones and high accuracy compared to singular convolutional neural networks. Several improvements to accuracy, lower mispredictions, and faster detection times were observed during the performed experiments with the proposed system. Furthermore, a new way of interpreting the intersection over union results for all neural networks is introduced to ensure the correctness and reliability of results. Lastly, the system produced by this thesis is analyzed from a dependability viewpoint to provide an overview of how this contributes to dependability research.
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Roberts, Petra. "Structural family therapy with families from diverse backgrounds with an adolescent involved in the mental health system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0010/MQ32236.pdf.
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Masafu, Carolyne N. ""The design of inclusive participatory systems in highly diverse societies : a case study on the usage of the C3 notification system in Langa, Cape Town"." University of the Western Cape, 2015. http://hdl.handle.net/11394/4884.
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Masters in Public Administration - MPAIn recent years the concept of public participation has been embraced by governments around the world to promote citizen involvement in decision making processes both to deepen local democracy and to ensure greater effectiveness in the delivery of public services. Implementing effective participatory systems, however, has proven to be especially challenging in highly diverse societies. Despite the best intentions of policy makers, the issue of exclusion, in particular, remains problematic as participatory systems frequently fail to address the concerns of poor communities who may not even be aware of their existence. Taking as a case study the C3 notification system introduced by the City of Cape Town to facilitate citizen reporting on faulty public services, this study examined the extent to which the design and implementation of a participatory model is of benefit to poor communities in the township of Langa. Based on a qualitative methodology, which included a series of interviews with municipal officials and office bearers as well as residents of Langa, the research examined the extent to which the notification system is used by local communities and to what effect. Viewed through the lens of social exclusion theory, the findings point to the fact that the C3 system was not only based on a best-practice model imported from an advanced Western nation, but it was oriented to the needs of more affluent citizens and, as such, it failed to take into account the specific needs of poor households who frequently lack even basic services and hence have nothing to report on. As a consequence, what was intended as a mechanism for promoting greater citizen participation in service delivery processes has effectively excluded a significant proportion of the most poor and vulnerable.
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Paranjape, Anuya. "MAST CELL ACTIVATION BY DIVERSE STIMULI CAN BE SUPPRESSED BY STEROID THERAPY AND TARGETING THE FYN-STAT5B CASCADE." VCU Scholars Compass, 2017. http://scholarscompass.vcu.edu/etd/5069.
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Mast cells are critical effectors of allergic disease that can be activated by numerous stimuli. We have examined mast cell control by the inflammatory cytokine, IL-33, as well as IgG. In the first study reported here, we found that the synthetic glucocorticoid, dexamethasone, potently and rapidly suppressed IL-33-induced cytokine production from murine bone marrow–derived and peritoneal mast cells, as well as human mast cells. Dexamethasone also antagonized IL-33-mediated enhancement of IgE-induced cytokine production and migration. Although dexamethasone had no effect on IL-33-induced phosphorylation of MAP kinases or NFκB p65 subunit, it antagonized AP-1 and NFκB-mediated transcriptional activity. Finally, intraperitoneal administration of dexamethasone completely abrogated IL-33-mediated peritoneal neutrophil recruitment and prevented plasma IL-6 elevation. These data demonstrate that steroid therapy may be an effective means of antagonizing the effects of IL-33 on mast cells in vitro and in vivo, acting partly by suppressing IL-33-induced NFκB and AP-1 activity. In the second study reported here, we found that Fcγ receptor crosslinkage activated the transcription factor Stat5B through a Fyn kinase-dependent pathway. We then showed that STAT5B is critical for IgG-induced cytokine production by mast cells but not macrophages. To expand these studies, we employed the K/BxN model of inflammatory arthritis, which has roles for mast cells and macrophages. In this model, Fyn or STAT5B deficiency only affected the arthritic flare that primarily depends on mast cell degranulation, without affecting the severity of the joint swelling. By contrast, Lyn kinase deficiency significantly exacerbated arthritis. These studies indicate a clinically relevant, lineage-restricted role for the Lyn/Fyn-STAT5 cascade. Collectively, our work demonstrates that mast cell activation by diverse stimuli can be suppressed by steroid intervention and selectively targeted by disrupting kinase-transcription factor pathways.
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Man, Sujie. "Are Preservice Instructional Designers Adequately Prepared For Tomorrow’s Diverse Learning Audiences?—A Cultural Content Analysis Of Textbooks (1993-2003) Used For Instructional Design." Scholar Commons, 2004. https://scholarcommons.usf.edu/etd/1147.
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This study used content analysis to examine the coverage of cultural issues in the five phases of instructional design within ID/ISD textbooks published between 1993 and 2003. The results indicated that not all the ID/ISD textbooks examined in this study covered cultural issues. Among the textbooks that did cover cultural issues, none of them reached more than 10% coverage of the total pages of any one book. The phase of Analysis and the Other category received the highest amount of coverage in both the 53 books sample and 36 books sample; whereas the phase of Implementation received the least amount of coverage overall.
The findings from this study have implications for both students and faculty members. With respect to students, the coverage of cultural issues in the textbooks examined in this study might influence students' beliefs regarding cultural issues. It may indirectly influence future instructional designers' work effectiveness as well. With respect to faculty members, the amount of cultural issues coverage may reinforce faculty members to underrate the importance of cultural issues in the instructional design process. The study also provides several recommendations to textbook authors, faculty members and instructional designers regarding the amount of coverage of cultural issues within the ID/ISD textbooks.
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Vizcarra, Christopher, Gabriel Medina, and Alfredo Barrientos. "Implementation of a Fashion Virtual Assistant with the Use of a Kinect v2 Camera and Image Processing." Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/653792.
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.This article is about the problem and development of a fashion virtual assistant proposed by using a Kinect v2 camera and image processing, for fashion retail stores. It comes up mainly as a response to the inability of providing unique experiences during the shopping process through the use of diverse devices. Because of this, similar virtual assistant solutions, oriented to provide clothing recommendations, were analyzed to be able to provide software that could give a more personalized suggestion for the users based on their physical characteristics.
Revisión por pares
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Morgan, Chodaesessie Wellesley-Cole. "Cervical Cancer Screening Disparities in an Ethnically Diverse Population of Women Residing in the United States in 1999: A Secondary Analysis of Data from the 1999 Behavioral Risk Factor Surveillance System." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001202.
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El-Muradi, E. M. A. "Mechanisms of relaxation in vascular smooth muscle : Comparative pharmacological investigations on vasodilation in the intact cardiovascular system and in isolated blood vessels of the rat using dilator agents with diverse mechanisms." Thesis, University of Bradford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234691.
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Panayides, Floris. "Rationalized structural systems for diverse applications." Thesis, Massachusetts Institute of Technology, 1988. http://hdl.handle.net/1721.1/76411.
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1988.Includes bibliographical references (leaf 108).
Industrialized building emerged as a consequence of the need for the economical and rapid provision of healthy and safe living environments. In both Europe and developing countries, concrete panel systems were gradually established as the primary building prefabrication method. However, concrete panel buildings demonstrated in time resistance to change, lack of adaptability to diverse sites and contexts and inefficiency in the use of the relatively expensive cement and steel. Open systems offer an alternative direction to industrialization in construction. In open systems, the differentiation of permanent from non-permanent elements and the organization of only the permanent ones in the form of a rationalized structural system (characteristic of open systems}, allow for the variable position and material composition of all walls. Nevertheless, conventional frame systems are not easily adaptable to diverse sites, since structural interdependency of bays and the need for alignment of elements allow only limited variability of building form. The developed Slab-Column System, presented herein, is a rationalized structural system which goes a step beyond conventional frames. Besides offering the possibility for flexible and changeable divisions of its structural platforms, the system is adaptable to a diversity of site conditions, thus broadening the applicability of large-scale prefabrication.
by Floris Panayides.
M.S.
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Clark, Juliet Ariana. "Designing Telehealth Rehabilitation Systems for Diverse Stakeholder Needs." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/103526.
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The strengthening of community care and the development of co-managed telehealth systems are vital components in addressing growing critical healthcare issues encountered worldwide. The global COVID pandemic highlights the challenges in providing appropriate co-managed home-based care in a systemic and financially viable way at scale. To develop practical and sustainable solutions it is important to understand the individual, institutional, and socio-technical opportunities and barriers potentially encountered when attempting to design and implement telehealth systems as part of a broader social healthcare network. In this thesis, I describe my work assessing the feasibility of deploying telehealth systems within the context of home based physical rehabilitation. I conducted an online survey and in-depth interviews with occupational and physical therapists to determine the issues impacting their current practices and the likelihood that a telehealth rehabilitation system might support or hinder their practice. Findings from this qualitative work highlighted the importance of maintaining the patient/therapist relationship, the need to empower the caregiver, and the potential for telehealth systems to provide quantitative and qualitative proof of care and patient progress. Building on these insights, I designed an interactive tablet application to assist therapists with the efficient and seamless installation and calibration of a telehealth system for stroke rehabilitation in the home. The application was evaluated in two studies with non-expert and expert users. The results from these studies indicate the efficiency of the application resulting from this design approach and the rich potential for integration of the system into clinical practice.Master of Science
The movement away from traditional medical establishments and the development of virtual health systems designed to be placed in the home are vital components in addressing growing critical healthcare issues encountered worldwide. The global COVID-19 pandemic highlights the challenges in providing appropriate home-based care in a scaleable and financially viable way. To develop practical and sustainable solutions, it is important to understand the individual, institutional, and socio-technical opportunities and barriers potentially encountered when attempting to design and implement them. In this thesis, I describe my work assessing the feasibility of deploying home-based health systems designed to assist stroke patients with physical rehabilitation. I conducted an online survey and in-depth interviews with occupational and physical therapists to determine the issues impacting them and the likelihood that a home-based rehabilitation system might support or hinder their work. Findings from this qualitative work highlighted the importance of maintaining the patient/therapist relationship, the need to support the caregiver, and the potential for home-based systems to provide proof of patient improvement. Building on these insights, I designed a tablet application to assist therapists with the efficient and seamless set up and calibration of a home-based system for stroke rehabilitation. The application was evaluated in two studies with non-expert and expert users. The results from these studies indicate the effectiveness of the application resulting from this design approach and the potential for integration of the system into the lives of therapists.
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Prince, Rikki. "Sharing user models between interactionally-diverse adaptive educational systems." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/419004/.
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Adaptive Educational Systems (AES) will become increasingly important in teaching and learning environments over the next decade, as students demand more personalised experiences. These systems reveal, hide, modify and recommend content that is most appropriate for the current user. To do this they rely on an accurate model of the student, their knowledge, experience and goals. With a growing variety of developers of these systems there are more situations where an experienced student will approach a new adaptive system, and it will not have any user model data with which to adapt; this is known as the cold-start problem. An answer to this is shared user modelling, where data about the student is communicated between adaptive applications. This task becomes more complicated when the applications measure the user in very different ways and therefore have different models to represent the user. This thesis proposes the design of an intermediary user model system that uses authored rules to map between the user model attributes used by different applications to measure the user. A prototype implementation of this theoretical framework is presented here, called the Interactionally-Diverse Intermediary User Modelling System, or IDIUMS. Two evaluations of IDIUMS were performed: a simulation and a user trial. The simulation demonstrated that the rule mapping functions as expected, producing user models that are still representative of the user, in relation to all other user models. The user trial showed that use of IDIUMS did not result in the adaptive applications presenting content at a more appropriate level, as perceived by the user. In determining why the user trial did not demonstrate appropriate adaptations, a review of evaluation methodologies in the AES community was undertaken. This showed that the method implemented for the user trial was in the second most common category of sources of evaluation data, behind expert-measured evaluations like pre-post test.
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Capouya, Rachel Danielle Capouya. "Analysis of microbial communities in three diverse commodity systems." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1543510790291037.
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Kuna, Ewelina Magdalena <1989>. "Spectroscopic study on diverse photocatalytic systems for organic transformations." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amsdottorato.unibo.it/9279/1/Kuna%20Ewelina%20Magdalena_PhD%20Thesis.pdf.
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The present doctoral dissertation was dedicated to select and develop an integrated photocatalytic system, which can be applied in organic reactions performed at liquid-liquid (homogenous reaction system) or liquid-solid (heterogenous reaction system) interface inside the microfluidic channels. The scientific strategy included (i) examination of potential photocatalysts upon various reaction conditions, (ii) selection of stable photocatalytic system and (iii) its implementation towards flow photochemistry by design an exemplar prototype of microfluidic devices for chemical transformations. Demonstrated strategy consist of consecutive protocols precisely described in subsequent chapters of this thesis.
First part of the discussion is concentrated on the selection of photoactive organic molecule, which can act as photocatalyst for further organic transformation. The significant efforts have been made to understand all the factors which affect the formation of stable and efficient photocatalytic system. On that basis, benzothiadiazole derivative compound is proposed as an environmentally friendly photocatalyst applicable in a simple dehalogenation and C-C bond formation reactions of thiophene compounds, as well as in photo-controlled polymerization reaction of methacrylate monomers.
Subsequently, to expand the scope of the photoredox catalysis towards flow technologies, the extensive spectroscopic studies on selected photocatalytic system, forming at the liquid-liquid and the solid-liquid interfaces inside the microchannel, were performed. This study allowed to design an exemplar prototype of microfluidic device, which can work upon homogenous and heterogeneous reaction conditions.
At the end, the potential application of inorganic photocatalyst towards flow photochemistry is briefly discussed. The ruthenium (Ru(bpy)2CN2) complex with cyanide ligands (CN-) is consider as a potential molecular module that may provide desire architecture of photocatalytic systems, especially under microfluidic conditions due to its self-assembling properties.
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Ramirez, Ricardo A. "Entomopathogen efficiency against Colorado potato beetle in diverse management systems." Online access for everyone, 2008. http://www.dissertations.wsu.edu/Dissertations/Spring2008/R_Ramirez_042108.pdf.
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Al-Kiswany, Samer. "Embracing diversity : optimizing distributed storage systems for diverse deployment environments." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44735.
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Distributed storage system middleware acts as a bridge between the upper layer applications, and the lower layer storage resources available in the deployment platform. Storage systems are expected to efficiently support the applications’ workloads while reducing the cost of the storage platform. In this context, two factors increase the complexity of the design of storage systems: First, the applications’ workloads are diverse among number of axes: read/write access patterns, data compressibility, and security requirements to mention only a few. Second, storage system should provide high performance within a certain dollar budget.
This dissertation addresses two interrelated issues in this design space. First, can the computational power of the commodity massively multicore devices be exploited to accelerate storage system operations without increasing the platform cost? Second, is it possible to build a storage system that can support a diverse set of applications yet can be optimized for each one of them?
This work provides evidence that, for some system designs and workloads, significant performance gains are brought by exploiting massively multicore devices and by optimizing the storage system for a specific application. Further, my work demonstrates that these gains are possible while still supporting the POSIX API and without requiring changes to the application. Finally, while these two issues can be addressed independently, a system that includes solutions to both of them enables significant synergies.
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Shea, Geoffrey Yu Kai. "A web-based approach to the integration of diverse data sources for GIS /." Sydney : School of Surveying and Spatial Information Systems, University of New South Wales, 2001. http://www.library.unsw.edu.au/~thesis/adt-NUN/public/adt-NUN20011018.170350/index.html.
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Fletcher, Sarah Marie. "Learning and flexibility for water supply infrastructure planning under diverse uncertainties." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118198.
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Thesis: Ph. D. in Engineering Systems, Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society, 2018.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 151-163).
Water supply infrastructure planning faces many uncertainties. Uncertainty in short-term in rainfall and runoff, groundwater storage, and long-term climate change impacts water supply forecasts. Population and economic growth drive urban water demand growth at rapid but uncertain rates. Overbuilding infrastructure can lead to expensive stranded assets and unnecessary environmental impacts, while under building can cause reliability outages with impacts on the economy, ecosystems, and human health. This dissertation assesses the potential for Bayesian learning about uncertainty to enable flexible, adaptive approaches in which infrastructure can be changed over time to reduce cost risk while achieving reliability targets. It develops a novel planning framework that: 1) classifies uncertainties and applies appropriate, differentiated uncertainty analysis tools, 2) applies Bayesian inference to physical models of hydrology and climate to develop dynamic uncertainty estimates, and 3) uses stochastic dynamic programming and engineering options analysis to assess the value of flexibility in mitigating cost and reliability risk. This framework is applied to three applications. Chapter 3 evaluates the potential for modular desalination design to manage multiple, diverse uncertainties -- streamflow, demand growth, and the cost of water shortages -- in Melbourne, Australia. Chapter 4 addresses uncertainty in groundwater resources in desalination planning in Riyadh, Saudi Arabia, and Chapter 5 addresses model uncertainty in climate change projections in a dam design problem in Mombasa, Kenya. Across all three applications, we find value in flexible infrastructure planning with a 9-28% reduction in expected cost. However, the performance of flexible approaches compared to traditional robust approaches varies considerably and is influenced by technology choice, economies of scale, discounting, the presence of irreducible stochastic variability, and the value society places on water reliability.
by Sarah Marie Fletcher.
Ph. D. in Engineering Systems
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Persson, Elias, and Martin Hautamäki. ""Buddy Tracker", an early warning system for recreational divers." Thesis, Karlstads universitet, Fakulteten för teknik- och naturvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-6386.
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Cambe, Jordan. "Understanding the complex dynamics of social systems with diverse formal tools." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEN043/document.
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Au cours des deux dernières décennies les objets connectés ont révolutionné la traçabilité des phénomènes sociaux. Les trajectoires sociales laissent aujourd'hui des traces numériques, qui peuvent être analysées pour obtenir une compréhension plus profonde des comportements collectifs. L'essor de grands réseaux sociaux (comme Facebook, Twitter et plus généralement les réseaux de communication mobile) et d'infrastructures connectées (comme les réseaux de transports publiques et les plate-formes en ligne géolocalisées) ont permis la constitution de grands jeux de données temporelles. Ces nouveaux jeux de données nous donnent l'occasion de développer de nouvelles méthodes pour analyser les dynamiques temporelles de et dans ces systèmes.De nos jours, la pluralité des données nécessite d'adapter et combiner une pluralité de méthodes déjà existantes pour élargir la vision globale que l'on a de ces systèmes complexes. Le but de cette thèse est d'explorer les dynamiques des systèmes sociaux au moyen de trois groupes d'outils : les réseaux complexes, la physique statistique et l'apprentissage automatique. Dans cette thèse je commencerai par donner quelques définitions générales et un contexte historique des méthodes mentionnées ci-dessus. Après quoi, nous montrerons la dynamique complexe d'un modèle de Schelling suite à l'introduction d'une quantité infinitésimale de nouveaux agents et discuterons des limites des modèles statistiques. Le troisième chapitre montre la valeur ajoutée de l'utilisation de jeux de données temporelles. Nous étudions l'évolution du comportement des utilisateurs d'un réseau de vélos en libre-service. Puis, nous analysons les résultats d'un algorithme d'apprentissage automatique non supervisé ayant pour but de classer les utilisateurs en fonction de leurs profils. Le quatrième chapitre explore les différences entre une méthode globale et une méthode locale de détection de communautés temporelles sur des réseaux scientométriques. Le dernier chapitre combine l'analyse de réseaux complexes et l'apprentissage automatique supervisé pour décrire et prédire l'impact de l'introduction de nouveaux commerces sur les commerces existants. Nous explorons l'évolution temporelle de l'impact et montrons le bénéfice de l'utilisation de mesures de topologies de réseaux avec des algorithmes d'apprentissage automatiqueFor the past two decades, electronic devices have revolutionized the traceability of social phenomena. Social dynamics now leave numerical footprints, which can be analyzed to better understand collective behaviors. The development of large online social networks (like Facebook, Twitter and more generally mobile communications) and connected physical structures (like transportation networks and geolocalised social platforms) resulted in the emergence of large longitudinal datasets. These new datasets bring the opportunity to develop new methods to analyze temporal dynamics in and of these systems. Nowadays, the plurality of data available requires to adapt and combine a plurality of existing methods in order to enlarge the global vision that one has on such complex systems. The purpose of this thesis is to explore the dynamics of social systems using three sets of tools: network science, statistical physics modeling and machine learning. This thesis starts by giving general definitions and some historical context on the methods mentioned above. After that, we show the complex dynamics induced by introducing an infinitesimal quantity of new agents to a Schelling-like model and discuss the limitations of statistical model simulation. The third chapter shows the added value of using longitudinal data. We study the behavior evolution of bike sharing system users and analyze the results of an unsupervised machine learning model aiming to classify users based on their profiles. The fourth chapter explores the differences between global and local methods for temporal community detection using scientometric networks. The last chapter merges complex network analysis and supervised machine learning in order to describe and predict the impact of new businesses on already established ones. We explore the temporal evolution of this impact and show the benefit of combining networks topology measures with machine learning algorithms
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Harrison, Alan. "The integration of multiple and diverse knowledge representation paradigms using a blackboard architecture." Thesis, Open University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261389.
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McVeigh, Andrew. "Diversely polarized antenna array systems." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/5494.
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An extensible application is one which allows functionality to be added, replaced or removed without requiring the source code of the application to be revealed or modified. The aim is to enable developers to add features and customise a substantial base application for new requirements, without the direct involvement of the application creators. A recurring theme of existing extensibility approaches is that an application must provide pre-planned extension points to accommodate expected future extensions. This results in a tension between keeping the architecture simple and potentially inextensible, or providing many predictive extension points that cannot be guaranteed to cover all future requirements despite best intentions. The Backbone component model is presented as an architectural approach which addresses these issues. By augmenting an architecture description language with a small set of constructs for modelling structural change, extensibility is naturally built into an application as it is elaborated into a compositional hierarchy. An extension can then restructure any part of the application architecture it builds on, to meet new requirements. The key contribution of this work is the consideration of both planned and unplanned extensibility in a hierarchical component model. A formal specification is given, describing the way that extensions can alter an architecture, and how extensions can be combined in a way which resolves any structural conflict. Tool support is provided by a UML-based modelling workbench and runtime platform, developed from the specification. Integration with existing implementation components and their subsequent evolution is fully supported. For evaluation, the model is compared and contrasted with other approaches, specifically plugin architectures and product lines. Backbone is also used to restructure and extend a mature system. These studies demonstrate that Backbone supports unplanned extension with the proviso that if existing leaf components are not granular enough, then some reimplementation may be required.
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Supakwong, Supawat. "Diversely polarized antenna array systems." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/5493.
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This thesis is concerned with the use of diversely polarized antennas in an array system as the advantage of this array architecture over a uniformly polarized array is its capability to separate multiple signals based on their polarization characteristics. Overall system performance is substantially improved due to an extra degree of signal discrimination. In this thesis, the aim is to address and explore several issues regarding the employment of the diversely polarized antennas in order to assess the array performance and its characteristics. First of all, the geometrical properties of the array manifold associated with polarization-sensitive array are explored from the differential geometry perspective. The fact that the array manifold incorporates all information about the array and signal environments allows it to completely characterize the whole system. In this work, a new mathematical framework is proposed to analyze three- parameter diversely polarized manifold, where important notations to describe the local characteristics of the manifold are provided. Second, issues regarding the presence of uncertainties in polarization-sensitive arrays are investigated. The array system considered so far is assumed to be free from errors and uncertainties. However, in practice, the system performance is affected considerably by various types of uncertainties that deviate from the assumed conditions. A framework based on the sensitivity analysis of manifold shape property is presented to evaluate the array robustness to uncertainties. In addition, a novel calibration method is proposed utilizing the concept of diversely polarized manifold. Third, problems regarding the presence of manifold ambiguities are addressed. Manifold ambiguity is an undesirable situation often encountered when there exists linear dependence amongst array response vectors. This study aims to investigate issues regarding the identification, classification, as well as the eradication of some types of ambiguities. A general framework to identify diversely polarized manifold ambiguity is presented, followed by two novel techniques to resolve ambiguities. Finally, issues regarding the use of polarization-sensitive antennas in CDMA- based systems are addressed. The framework is essentially based on an integration of polarization-sensitive antennas, space-time array processing, and the spread-spectrum multiple access technology. First, the properties of Polarization- Spatio-Temporal ARray (Polar-STAR) manifold is investigated based on a direct relationship with the diversely polarized manifold. Then, the array's ultimate detection capabilities are presented. Finally, a self calibration method for a polarization-sensitive asynchronous DS-CDMA system is proposed.
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Dowse, Andrew Information Technology & Electrical Engineering Australian Defence Force Academy UNSW. "The diverse organisation : operational considerations for managing organisational information resources." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Information Technology and Electrical Engineering, 2007. http://handle.unsw.edu.au/1959.4/38677.
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Sharing and exploitation of information resources across a diverse organisation can confer a significant competitive advantage but also can be a substantial challenge in coordinating across structural and specialisation boundaries. This challenge reflects the difficulties traditionally associated with lateral relations, which were recognised by classical organisational theorists but are more pronounced with the emergence of information as a critical resource. Notwithstanding the benefits of information sharing across the organisation, the classical concept of specialisation remains fundamental to organisational theory; thus there is potential for friction between requirements for specialisation and coordination. This research therefore examines information management arrangements to balance specialisation and coordination in a diverse organisation. The research takes advantage of organisational and systems theory literature to appreciate complex information management requirements in terms of differentiation/cohesion and integration/coupling of organisational elements. Information management???s business and technology perspectives define the conceptual framework, within which gaps in the literature are identified and become the focus of the research. The two key research areas are the opportunities enabled by technology for business integration through collaborative decision-making and the management of organisation-wide information technology infrastructure. Collaborative decision-making is an integrating mechanism that can provide balance between specialisation and coordination contingent upon the nature of decision tasks and their organisational context. Propositions associated with an adaptive approach to collaborative decision-making were tested in laboratory experiments, with positive support for the contingency model albeit constrained by individual cognitive variances. Organisations increasingly are adopting centralised approaches to the provision of IT services, with IT governance as an integrating mechanism and a need for multiple business-IT alignments to add value according to the differentiation required by organisational elements. Propositions relating to the adaptation of IT management arrangements based upon organisational characteristics were tested using a multi- iv -discipline approach, which resulted in support for the model although practical difficulties were experienced in the action research component. This research provides a framework for maintaining effective variety of information capabilities commensurate with the diverse organisation???s mission and environment, while also exploiting the synergies and economies of shared information resources for holistic benefits.
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yuan, chenyi. "The Photofate of Pesticides and Dissolved Organic Matter in Diverse Aquatic Systems." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu148710499961032.
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Ghazanfar, Shila. "Statistical approaches to harness high throughput sequencing data in diverse biological systems." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/17268.
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The development of novel statistical approaches to questions specific to biological systems of interest is becoming more valuable as we tackle increasingly complex problems. This thesis explores three distinct biological systems in which high throughput sequencing data is utilised, varying in research area, organism, number of sequencing platforms and datasets integrated, and structure such as matched samples; showcasing the variety of study designs and thus the need for tailored statistical approaches. First, we characterise allelic imbalance from RNA-Seq data including stringent filtering criteria and a count based likelihood ratio test. This work identified genes of particular importance in livestock genomics such as those related to energy use. Second, we outline a novel methodology to identify highly expressed genes and cells for single cell RNA-Seq data. We derive a gamma-normal mixture model to identify lowly and highly expressed components, and use this to identify novel markers for olfactory sensory neuron (OSN) maturity across publicly available mouse neuron datasets. In addition we estimate single cell networks and find that mature OSN single cell networks are more centralised than immature OSN single cell networks. Third, we develop two novel frameworks for relating information from Whole Exome DNA-Seq and RNA-Seq data when i) samples are matched and when ii) samples are not necessary matched between platforms. In the latter case, we relate functional somatic mutation driver gene scores to transcriptional network correlation disturbance using a permutation testing framework, identifying potential candidate genes for targeted therapies. In the former case, we estimate directed mutation-expression networks for each cancer using linear models, providing a useful exploratory tool for identifying novel relationships among genes. This thesis demonstrates the importance of tailored statistical approaches to further understanding across many biological systems.
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Orlikowski, Daniel. "Elastic Effects in Diverse Material Systems: Phase Separations of Coherent Binary Alloys and Carbon Nanotube Systems." NCSU, 2000. http://www.lib.ncsu.edu/theses/available/etd-20000426-113738.
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Orlikowski, Daniel Anthony
Elastic Effects in Diverse Material Systems:
Phase Separation of Coherent Binary Alloys and Carbon Nanotube Systems.
Under the direction of Prof. Christopher Roland
The role of elastic strain is found to have dominant effects in twodisparate topics in materials physics. Specifically, the first partdiscusses large-scale three dimensional simulations of the phaseseparation process for elastically-coherent binary alloys withand without external strain. The second part focuses on the elasticeffects and electrical properties of addimer-induced defects on carbonnanotubes.
For both two- and three-dimensional binary alloys,the effects of long-range elastic fields on the phase separationprocess with and without external strain were investigated withlarge-scale Langevin simulations. The elastic effects incorporated inthe model are the result of anisotropy and dilational misfitsintroduced via inhomogeneities in the elastic constants of theconstituents. To understand the domain morphology, a developedselection criterion indicates their shape and/or orientationbased on the system's shear moduli. Subjected to external stresses, precipitates and theirorientation can be altered continuously intolamellar configurations. For moderate external strain, late-time,large-scale splitting of domains is observed. Other aspects ofthe coarsening process---dynamic scaling of the correlationfunctions and local inverse coarsening---are also discussed.
With tension in carbon nanotubes, the presence of addimers are shownthrough classical molecular dynamics and tight binding simulations toform defects that wrap themselves about thenanotube, which are short segments of a tube with a changed helicity.Such formations can lead to nanotube-based quantum dots. Theseheterojunctions are most favorable for (n,0)zigzagtubes, where addimers induce plastic transformationson these otherwise brittle tubes.
These defects and heterojunctions are also investigated through STMimages and conductance signatures. Prominent ``ring-like'' featuresare observed in the STM images, whose positions correlate with theunderlying geometry of the defect. By contrast, most of the defectshave only a relatively modest effect on the transport properties.However, the defects do induce localized-states eitherabove or below the Fermi level. The STM images and conductances ofnanotube-heterojunctions are also explored.
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Shea, Geoffrey Yu Kai Surveying & Spatial Information Systems Faculty of Engineering UNSW. "A Web-Based Approach to the Integration of Diverse Data Sources for GIS." Awarded by:University of New South Wales. Surveying and Spatial Information Systems, 2001. http://handle.unsw.edu.au/1959.4/17855.
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The rigorous developments of GIS over the past decades have enabled application developers to create powerful systems that are used to facilitate the management of spatial data. Unfortunately, each one of these systems is specific to a local service, with little or no interconnection with services in other locales. This makes it virtually impossible to perform dynamic and interactive GIS operations across multiple locales which have similar or dissimilar system configurations. The Spatial Data Transfer Standard (SDTS) resolved the problems partially by offering excellent conceptual and logical abstraction model for data exchange. Recent advancements of the Internet enlightened the GIS community as to the realization of an ideal concept of information interchange. A suite of new technologies that embraces Extensible Markup Language (XML), Scalable Vector Graphics (SVG), Portable Network Graphics (PNG) and Java creates a powerful and new perspective that can be applied to all phases of online GIS system development. The online GIS is a Web-based approach to integrating diverse spatial data sources for GIS applications. To address the spatial data integration options and implications related to the Web-based approach the investigation was undertaken in 5 phases: (1) Determine the mapping requirements of graphic and non-graphic spatial data for online GIS application; (2) Analyze the requirements of spatial data integration for online environments; (3) Investigate a suitable method for integrating different formats of spatial data; (4) Study the feasibility and applicability of setting up the online GIS; and (5) Develop a prototype for online sharing of teaching resources. Resulting from the critical review on current Internet technology, a conceptual framework for spatial data integration was proposed. This framework was based on the emerging Internet technology on XML, SVG, PNG, and Java. It was comprised of four loosely coupled modules, namely, Application Interface, Presentation, Integrator, and Data module. This loosely coupled framework provides an environment that will be independent of the underlying GIS data structure and makes it easy to change or update the system as a new task or knowledge is acquired. A feasibility study was conducted to test the applicability for the proposed conceptual framework. A detailed user requirements and system specification was thus devised from the feasibility study. These user requirements and system specification provided some guidelines for online GIS application development. They were expressed specifically in terms of six aspects: (1) User; (2) Teaching resources management; (3) Data; (4) Cartography; (5) Functions; and (6) Software development configuration. A prototype system based on some of the devised system specifications was developed. In the prototype software design, the architecture of a Three-Tier Client-Server computing model was adopted. Due to the inadequacy of native support for SVG and PNG in all currently available Web browsers, the prototype was thus implemented in HTML, Java and vendor specific vector format. The prototype demonstrated how teaching resources from a variety of sources and format (including map data and non-map resources) were integrated and shared. The implementation of the prototype revealed that the Web is still an ideal medium for providing wider accessibility of geographical information to a larger number of users through a corporate intranet or the Internet cost-effectively. The investigation concluded that current WWW technology is limited in its capability for spatial data integration and delivering online functionality. However, developing of XML-based GIS data model and graphic standards SVG and PNG for structuring and transferring spatial data on the Internet appear to be providing solutions to the current limitations. It is believed that the ideal world where everyone retrieving spatial information contextually through a Web browser disregarding the information format and location will eventually become true.
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Oh, Eunjoo. "Project Organization, Diverse Knowledge, and Innovation Systems in the Korean Game Software Industry." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14516.
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This research was initiated in the belief that new product development requires the integration of diverse knowledge located in different units or organizations. In recent decades, evolutionary scholars have emphasized the importance of coherent systems and regional scientists have highlighted the importance of geographical proximity for easier transfer of tacit knowledge. Despite the strength of these explanations, they do not adequately address the balance between tacit and explicit knowledge, ignoring different types of knowledge conversion process (Nonaka and Takeuchi, 1995).
My research aims to bring a greater understanding of the integration of diverse knowledge for innovation achievements among different actors. Specifically, this thesis deals with project organization for new product development, exploring three main research areas: (1) company utilization of external companies and freelancers for project formation in relation to resource mobilization of companies; (2) types of knowledge conversion among employees within and between departments; and (3) the impacts of several meditating factors on clustering orientations of companies. These meditating factors include knowledge codification, IT technology for communication, and trust mechanisms that help to mobilize external knowledge and reduce friction among team members.
In this study, data are collected from questionnaire survey (104 firms) and interviews with 34 persons in the Korean game industry. Probit model, tobit model, and OLS regression model were used. The main findings are as follows. First, codified knowledge concept reports, prototypes, and manuals is produced through externalization as a game development project is in progress. Second, among several indicators of internal capability of companies, the type of initial industry whether game companies started their business in the game industry and expenditures on the purchase of intellectual property rights from other cultural industries have significant and positive impacts on the utilization of external partners. Third, information communication technology has a significant, negative impact on clustering orientation of companies while reliance on communities of practice and built-in trust have significant, positive impacts on that.
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Rodriguez, Emily. "Including diverse knowledge systems in the Intergovernmental Platform on Biodiversity and Ecosystem Services." Thesis, Linköpings universitet, Tema vatten i natur och samhälle, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-93660.
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Including scientific and non-scientific knowledge systems in the Intergovernmental Platform on Biodiversity and Ecosystem Services (IPBES) will influence the framing of biodiversity issues and management policies. Through analysis of documents from the IPBES meetings and interviews with non–state actors, this study identifies knowledge systems relevant for biodiversity issues, explores perceptions of why diverse knowledge systems should be incorporated into the IPBES and discusses governance challenges. This study draws upon research in science and technology studies to discuss democratic inclusion of knowledge into the IPBES on the international level. The social development pillar of sustainability underlies the substantive and normative rationales for including diverse knowledge systems into the IPBES. States involved in the IPBES negotiations face the challenge of designing mechanisms that reflect the predominating rationales for including a plurality of knowledge systems in this biodiversity decision–making tool.
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Hristova, Yana Roumenova. "Subcomponent self-assembly of diverse metallo-supramolecular systems from 3,3'-bipyridine-6,6'-dicarboxaldehyde." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610122.
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Rhodes, B. D. (Bernard David). "Value and belief systems in outcomes based education in a diverse school environment." Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53710.
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Thesis (PhD)--University of Stellenbosch, 2003.ENGLISH ABSTRACT: The introduction of Outcomes Based Education in the South African school system brought about a new approach to education. The existing system of a multitude of subjects was replaced by a curriculum with eight learning areas. In this curriculum the focus is on attitudes, skills and values which replaced a content based approach with a process-based approach. Educators thereby became facilitators in the educational process. With the barriers of segregation removed in the South African society the diversity of the population created multi-cultural classrooms. Schools became the meeting place of many cultures and belief systems. Educators who facilitated learning in schools were not always prepared for the task of managing a multi-cultural and multi-religious school environment. This change within the school system required that educators make a paradigm shift regarding their role as educators. The introduction of Curriculum 2005 (1997); The Revised National Curriculum (2001) and the National Curriculum Statement (2002) was not without problems in South Africa. Many educators resisted change and had negative perceptions about the implementation of Outcomes Based Education in schools. These perceptions stemmed from inadequate training of educators for the implementation phase of the curriculum. The lack of skills to facilitate the content of the curriculum was also visible in the educators' inability to identify values in the curriculum. The multi-cultural and multi-religious classroom confronted educators with values from the different value and belief systems of learners. It is, therefore, important that educators should be able to identify values in order to attain the outcomes of the curriculum. Previous research indicated that educators did not play an active role in the teaching of values in schools. Neither were the educators participating in this research able to either identify or promote the values identified in the curriculum. The aim of this research was to develop an instrument to assist educators in identifying values from different belief systems in C2005 (1997); The Revised National Curriculum (2001) and the National Curriculum Statement (2002). Guidelines were developed for the facilitation of the identified values within the OBE curriculum. An empirical research was undertaken regarding the management of values in schools in the Western Cape during June 1999. Possible methods and approaches to values in education in general were identified and the suggested instrument and guidelines to assist educators with the identification of values was developed. The relevance of this study is to assist in-service and pre-service educators In identifying and facilitating different belief and value systems in an OBE education system.
AFRIKAANSE OPSOMMING: Die implementering van Uitkomsgebaseerde Onderwys (UGO) in die Suid-Afrikaanse skoolstelsel het 'n nuwe benadering tot onderwys gebring. Die veelvoudige vakkeuses van die vorige kurrikulum is vervang deur een met agt leerareas. 'n Nuwe kurrikulum wat gefokus is op gesindhede, vaardighede en waardes het op sy beurt die inhoudgebaseerde kurrikulum met 'n prosesbenadering vervang. Opvoeders het nou fasiliteerders van die leerproses geword. Die verwydering van skeidslyne in die Suid Afrikaanse samelewing het tot gevolg gehad dat die diversiteit van die S.A. bevolking tot multikulturele klaskamers gelei het. Skole het die ontmoetingsplek van vele kulture en waardestelsels geword. Die opvoeders wat die leerproses in skole moet fasiliteer, is nie altyd voorbereid op die multikulturele en multireligieuse skoolomgewing nie. Die verandering in die skoolwese vereis dat opvoeders 'n paradigmaskuif betreffende hulle rol as opvoeders moet maak. Die implementering van Kurrikulum 2005(Curriculum 2005,1997; Hersiene Nasionale Kurrikulum (Revised National Curriculum, 2001); Nasionale Kurrikulum Stelling (National Curriculum Statement, 2002) was geensins sonder probleme nie. Heelwat opvoeders het weerstand gebied en baie negatiewe persepsies is behou in verband met die implementering van Uitkomsgebaseerde Onderwys in skole. Die persepsies van opvoeders ten opsigte van die implementeringsfase van die kurrikulum word gemotiveer as gevolg van die onvoldoende opleiding in die voorbereidingsproses .. Die gebrek aan vaardighede om die inhoud van die kurrikulum te fasiliteer, is sigbaar in die opvoeders se onvermoë om waardes in die kurrikulum te identifiseer. Die multikulturele en multireligieuse klaskamer het opvoeders konfronteer met die leerders se waardes vanuit hul verskillende waarde- en oriënteringsomgewings. (belief systems). Dit word belangrik geag dat opvoeders hierdie waardes kan identifiseer sodat die uitkomste van die kurrikulum behaal kan word. Vorige navorsing het aangedui dat opvoeders nie 'n aktiewe rol in die fasilitering van waardes in die skool speel nie. Die opvoeders wat deel was van hierdie navorsing, kon ook nie waardes in die kurrikulum identifiseer of bevorder nie. Die doel van hierdie navorsing was om 'n instrument te ontwerp om opvoeders te help met die identifisering van waardes van die verskillende oriënteringsomgewings (belief systems) in C200S (1997); RNC (2001); NCS(2002) Riglyne is ontwerp vir fasilitering van die geïdentifiseerde waardes in die UGO kurrikulum. Empiriese ondersoek is onderneem met die doelom die hantering van waardes in Wes-Kaapse skole na te vors. Moontlike metodes en benaderings tot waardes in onderwys in die algemeen is geïdentifiseer en 'n instrument om opvoeders te help met die identifisering van waardes, is ontwikkel. Riglyne word voorgestelom opvoeders te help in hulle benadering tot waardes in die kurrikulum. Die waarde van die studie lê daarin om sowel voor- as indiensopvoeders te help met die identifisering en fasilitering van waardes vanuit die verskillende waarde en oriënteringsomgewings in 'n Uitkomsgebaseerde Onderwysstelsel.
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Coombs, Gareth. "Ecology and degree of specialization of South African milkweeds with diverse pollination systems." Thesis, Rhodes University, 2010. http://hdl.handle.net/10962/d1003758.
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Like orchids, the complexity of flowers found in asclepiads (Asclepiadoideae, Apocynaceae) and the fact that pollen is presented as pollinaria, offers excellent opportunities to study various aspects of plant-pollinator interactions. In this thesis I investigated two broad themes: ecological aspects of the pollination biology of hymenopteran and fly-pollinated asclepiads as well as the degree of specialization to certain pollinators in these species. Colonizing plants often reproduce through self-pollination, or have highly generalized pollination systems, or both. These characteristics facilitate establishment in small founding populations and generates the prediction that reproductive success should be independent of population size in these species. Chapter one examines the pollination biology of Gomphocarpus physocarpus, an indigenous, weedy species and investigates the relationship between reproductive success and population size. In this species, there is no evidence of an Allee effect and reproductive success is not correlated with population size. In addition G. physocarpus is not capable of self-pollination, suggesting it is completely reliant on pollinators for seed set. The lack of a relationship between pollination success and population size is therefore likely explained by the generalized wasp pollination system of this species. Several milkweeds are invasive outside of their native ranges. Invasive species either need to co-opt native pollinators in order to reproduce or reduce their reliance on pollinators through having the ability to self-pollinate. Co-opting native pollinators is expected to be easier in species that have generalized pollination systems, alternatively species with specialized flower morphologies need to rely on similar functional groups of pollinators to be present within the invaded range. Chapter two investigates the pollination biology and pollination success of the invasive milkweed, Araujia sericifera, and finds that in South Africa, this species is visited mainly by native honeybees and nocturnal moths. Moths however contribute little to pollen removal, and deposition. Based on the apparent morphological mismatch between the flower of A. sericifera and native honeybees, I propose that the native pollinators of this species are likely to be larger Hymenoptera (e.g. Bumblebees). Data from a breeding system study, indicated that this species is not capable of automatic self-pollination, but could set fruit from geitonogamous self-pollinations pointing to the importance of native pollinators for successful reproduction. The pollinaria of milkweeds can accumulate on pollinators to form pollen masses large enough to physically interfere with the foraging behaviour of pollinating insects. In chapter three I describe the pollination biology of Cynanchum ellipticum and find that this species is mainly pollinated by honeybees although this species is visited by several other members of Hymenoptera, Lepidoptera and Diptera. Due to the structure of the pollinaria, these chain together relatively efficiently and frequently form large pollinarium loads on the mouthparts of honeybees. However there is little evidence that these pollinarium loads influence the foraging times of pollinators and only a few individual honeybees exhibited longer foraging times and most honeybees were unaffected by the presence of large pollinarium loads. Within the genus Cynanchum there is large variation in the gynostegium structure that may influence the pattern of pollinarium loading on pollinators as well as pollen reception as shown in chapter three. In Chapter four, the pollination biology of Cynanchum obtusifolium is examined, and like that of C. ellipticum, this species is visited by a wide diversity of pollinators but honeybees appear to be the primary pollinators. More importantly this species is shown to be andromonoecious and produces two morphologically different flower types, that may be distinguished based on differences in the gynostegium structure. These two types of flower could mainly be distinguished by the length of the anther wings. I found that flowers with short anther wings function as male flowers by only exporting- and rarely receiving pollinia. Flowers with longer anther wings function as hermaphrodite flowers and can both export and receive pollinia. The ratio of male to hermaphrodite flowers varied at different times during the flowering season, but preliminary data suggested that this was not related to levels of pollination success. The genera Stapelia and Ceropegia are well known for their intricate floral adaptations that mimic the brood and feeding substrates of pollinating flies. Despite several studies that have documented the various adaptations to fly pollination in different species, there is a lack of natural history studies documenting different flower visitors, pollen loads and long term levels of pollination success in these species. In Chapter six I document the pollination biology of Ceropegia ampliata by documenting different pollinators and quantifying average levels of pollination success and the nectar reward. I also experimentally manipulated the trapping hairs of this species to determine whether trapping hairs influence average levels of pollen export and receipt. I show that Ceropegia ampliata is pollinated by a generalist guild of flies (mainly Tachinidae, Sarcophagidae, Muscidae and Lauxaniidae) and produces minute quantities of relatively dilute nectar as a reward. Pollination success was generally low in this species and increases periodically suggesting that the abundance of pollinators is patchy. I found that flowers with trapping hairs that had already wilted had higher levels of pollinarium removal than flowers with erect hairs, however experimentally removing the hairs had no significant effect on pollen export and receipt. In Chapter seven, I document the pollinators, pollen loads and long term levels of pollination success in Stapelia hirsuta var. bayllissi, a rare sapromyiophilous stapeliad. I find that, in contrast to C. ampliata, this species was specialized to pollination by small flies of the family Anthomyiidae. Similar to the results from Chapter seven, I find that long term levels of pollination success were typically low but could increase periodically, although such increases were generally unpredictable. There are currently very few records documenting pollinator interactions in the Periplocoideae. Many species within this subfamily exhibit open-access flowers suggestive of pollination by short-tongued insects. I investigated the pollination biology of Chlorocyathus lobulata, a rare species with a highly localized distribution. I aimed to determine the pollinators, average levels of pollination success and demography of this species in order to determine whether this rare species is suffering from the collapse of a highly specialized pollinator mutualism. I also quantified the high incidence of flower herbivory caused by larvae of the moth, Bocchoris onychinalis. I find that C. lobulata has a highly generalized fly pollination system and average levels of pollination success suggested that a large proportion of flowers had pollen removed and deposited suggesting that this species is not experiencing pollination failure. The large numbers of juveniles present also indicated that recruitment is taking place.
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BRITO, Alisson Vasconcelos de. "Modelagem e simulação de sistemas dinamicamente reconfiguráveis em granularidades diversas." Universidade Federal de Campina Grande, 2008. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1443.
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Uma metodologia inovativa para modelagem e simulação de sistemas parcial e dinamicamente reconfiguráveis é apresentada neste trabalho. Como a reconfiguração dinâmica pode ser vista como o processo de remoção e inserção de módulos num sistema, a metodologia apresentada é baseada no bloqueio da execução de módulos não configurados durante a simulação, sem que o restante do sistema pare sua atividade normal. Uma vez provida a possibilidade de remover, inserir e trocar módulos durante a simulação, todos sistemas modelados utilizando este simulador podem se beneficiar das reconfigurações dinâmicas. Com o objetivo de provar os conceitos definidos, modificações no núcleo do SystemC foram realizadas, adicionando novas instruções para desconfigurar e reconfigurar módulos em tempo de simulação, permitindo que o simulador seja utilizado tanto em nível de transações (TLM), como no nível de transferência entre registradores (RTL). No nível TLM ele permite a modelagem de sistemas de hardware num nível maior de abstração, assim como sua integração com softwares embarcados, enquanto que no nível RTL, o comportamento dinâmico do sistema pode ser observado no nível de sinais. Ao mesmo tempo em que todos os níveis de abstração podem ser simulados, todas possíveis granularidade podem ser consideradas. De forma geral, todo sistema capaz de ser simulado utilizando SystemC pode também ter seu comportamento modificado em tempo de execução. O conjunto de instruções desenvolvidas reduz o tempo de ciclo de projeto. Comparado a estratégias tradicionais, informações sobre o comportamento adaptativo e dinâmico dos sistemas estarão disponíveis nos estágios mais iniciais do desenvolvimento. Três aplicações diferentes foram desenvolvidas utilizando esta metodologia em diferentes níveis de abstração e granularidade. Considerações foram feitas a respeito da decisão sobre como aplicar a reconfiguração dinâmica da melhor forma possível. Os resultados adquiridos auxiliam os projetistas na escolha da melhor relação custo/benefício em termos de área de chip ocupada e atraso necessário para reconfiguração.
An innovative methodology to model and simulate partial and dynamic reconfiguration is presented in this work. As dynamic reconfiguration can be seen as the remove and reinsertion of modules into the system, the presented methodology is based on the execution blocking of not configured modules during the simulation, without interfere on the normal system activity. Once the simulator provides the possibility to remove, insert and exchange modules during simulation, all systems modeled on this simulator can have the benefit of the dynamic reconfigurations. In order to prove the concept, modifications on the SystemC kernel were developed, adding new instructions to remove and reconfigure modules at simulation time, enabling the simulator to be used either at transaction level (TLM) or at register transfer level (RTL). At TLM it allows the modeling and simulation of higher-level hardware and embedded software, while at RTL the dynamic system behavior can be observed at signals level. At the same time all the abstraction levels can be modeled and simulated, all system granularity can also be considered. At the end, every system able to be simulated using SystemC can also has your behavior changed on run-time. The provided set of instructions decreases the design cycle time. Compared with traditional strategies, information about dynamic and adaptive behavior will be available at earlier stages. Three different applications were developed using the methodology at different abstract levels and granularities. Considerations about the decision on how to apply dynamic reconfiguration in the better way are also made. The acquired results assist the designers on choosing the best cost/benefit tradeoff in terms of chip area and reconfiguration delay.
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Grevet, Catherine. "Being nice on the internet: Designing for the coexistence of diverse opinions online." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/55002.
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This thesis contributes to a better understanding of social media designs for more civil conversations online. I first demonstrated that people disengage from social media interactions when they encounter uncivil behavior from friends. To find alternative designs for social media that are more civil, I evaluated novel social interaction techniques. To do this, I designed a six-phase framework for prototyping social interactions called piggyback prototyping; and an algorithmic probe study methodology to include participants in the development of social curation algorithms. I built a piggyback prototype that modifies the civility on Facebook by highlighting positive posts in green and hiding impolite posts, and I deployed it as an algorithmic probe with 20 participants. I uncovered ways to improve the algorithm, and I found that participants responded most favorably to having civil posts highlighted. These findings open avenues for future research in designing pro-social platforms.
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Barry, Zachary Thomas. "Single-particle tracking and fluorescence correlation spectroscopy for systems-level analysis of molecular dynamics in diverse biological systems." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112494.
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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Biological Engineering, 2017.Cataloged from PDF version of thesis.
Includes bibliographical references.
Fluorescence microscopy has proven to be immensely powerful for the study of biological systems at both the cellular and systems biological levels. The ability to specifically label a single molecular species fluorescently has enabled the study of complex cellular structures through the visualization of their constituent components both individually as well as in context of the overall structure. Since the advent of engineered fluorescent proteins (such as GFP) and other proteins capable of being genetically encoded as fusion constructs, the utility of fluorescence microscopy has increased exponentially in terms of the ability to efficiently, specifically label desired molecules while limiting perturbations to the biology under study. With this enhanced ability of visualization came a hand-in-hand evolution of computational techniques to extract quantitative information from microscopy images. In this thesis, I focus on the application of fluorescence imaging at the biophysical level in living cells: analyzing the motion/dynamics of single molecules and complexes, which are small relative to the structures of the cell, in order to elucidate their molecular function and mechanism. The motion of these "particles" within living cells is necessarily related to their functions as well as their interacting partners, which can vary dynamically during their lifetimes. Observation and analysis of this motion using a combination of fluorescence microscopy and robust quantitative analysis allows one to infer these characteristics. Here, I study three diverse biological systems in the context of live-cell fluorescence microscopy and biophysical analysis: 1) the transport of 0-actin mRNA particles in primary mouse neurons, 2) kinetochore motion during cell division, specifically focusing on anaphase dynamics, and 3) the motion of cell-growth-implicated membrane proteins in Bacillus subtilis.
Funded by the NSF Physics of Living Systems PHY 1305537.
by Zachary Thomas Barry.
Ph. D.
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Dörfler, Renate Luise. "The assessment of animal welfare in diverse livestock production systems : ethical and scientific issues /." Berlin : Köster, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016481730&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Gupta, Radhika. "Trying to “fit” in: Consequences of uniform development goals for diverse social-ecological systems." Thesis, Stockholms universitet, Stockholm Resilience Centre, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-179182.
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Local social-ecological systems (SES) have diverse needs owing to their heterogeneous properties such as distinctive histories, cultures and environments. Previous studies have illustrated that a failure to recognize spatial and temporal dynamics, especially in the context of the Anthropocene, where ‘time and space are compressed’ due to globalization, gives rise to the problem of ‘fit’. My question investigates to what extent development goals consider cross-scale dynamics for the development of local SES and its importance for SES resilience. I explored these dynamics in the remote Himalayan villages of West Sikkim, India, through interviews with village and government actors at four different scales of governance, specifically exploring narratives about agricultural development. There has been a rapid shift from subsistence to commercial farming, with monocultures of large cardamom in the lowlands of the case study region. Additionally, there was a major reduction in livestock population and access to forest resources. Policies for agriculture intensification, conservation, a national food subsidy and the effects of globalization combined – are pushing these communities to become extremely dependent on external markets and subsidies for income and food, and bringing a change in their diets (as they substitute local food with imported products). My findings suggest that imposing uniform institutions, so-called “monocropping institutions” have caused the local SES to become increasingly homogenized, and consequently vulnerable to multiple threats. Simplified solutions for development with the added pressure of globalization could thus be seen as a homogenizing force on local SES, ultimately threatening social-ecological resilience at the global scale.
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Farouq, Shiraz. "Towards large-scale monitoring of operationally diverse thermal energy systems with data-driven techniques." Licentiate thesis, Högskolan i Halmstad, CAISR Centrum för tillämpade intelligenta system (IS-lab), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-40964.
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The core of many typical large-scale industrial infrastructure consists of hundreds or thousands of systems that are similar in their basic design and purpose. For instance, District Heating (DH) utilities rely on a large network of substations to deliver heat to their customers. Similarly, a factory may require a large fleet of specialized robots for manufacturing a certain product. Monitoring these systems is important for maintaining the overall efficiency of industrial operations by detecting various problems due to faults and misconfiguration. However, this can be challenging since a well-understood prior model for each system is rarely available. In most cases, each system in a fleet or network is fitted with a set of sensors to measure its state at different time intervals. Typically, a data-driven model for each system can be used for their monitoring. However, not all factors that can possibly influence the operations of each system in a fleet or network has an associated sensor. Moreover, sufficient instances of normal, atypical and faulty behavior are rarely available to train such a model. These issues can impede the effectiveness of a system level data-driven model. Alternatively, it can be assumed that since all the systems in a fleet or network are working on a similar task, they should all behave in a homogeneous manner. Any system that behaves differently from the majority is then considered as an outlier. This is referred to as the global model at the fleet or network level. While the approach is simple, it is less effective in the presence of non-stationary working conditions. Hence, both system level and global modeling approaches have their limitations. This thesis investigates system level and fleet or network level (global) models for large-scale monitoring, and proposes an alternative way which is referred to as a reference-group based approach. Herein, the operational monitoring of each system, referred to as a target, is delegated to a reference-group, which consists of systems experiencing a comparable operating regime along with the target. Thus, the definition of a normal, atypical or faulty operational behavior in a target system is described relative to its reference-group. In this sense, if the target system is not behaving operationally in consort with the systems in its reference-group, then it can be inferred that this is either due to a fault or because of some atypical operation arising at the target system due to its local peculiarities. The application area for these investigations is the large-scale operational monitoring of thermal energy systems: networks of district heating (DH) substations and fleets of heatpumps. The current findings indicate three advantages of a reference-group based approach. The first is that the reference operational behavior of any system in the fleet or network does not need to be predefined. The second is that it provides a basis for what a system’s operational behavior should have been and what it is. In this respect, each system in the reference-group provides an evidence about a particular behavior during a particular time period. This can be very useful when the description of a normal, atypical and faulty operational behavior is not available. The third is that it can detect potential atypical and faulty operational behavior quicker compared to global models of outlier detection at the fleet or network level.
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Lee, Andrew K. T. "Microcomputer systems for subsea applications." Thesis, University of Liverpool, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329481.
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