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Dissertations / Theses on the topic 'Electronic databases'
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Rashid, Awais. "A database evolution approach for object oriented databases." Thesis, Lancaster University, 2001. http://eprints.lancs.ac.uk/11951/.
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Lee, J. J. "The object-oriented database and processing of electronic warfare data." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA303112.
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Karlapalem, Kamalakar. "Redesign of distributed relational databases." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/9173.
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Tan, Meifang. "An online interactive spreadsheet approach to data analysis and manipulation." [Gainesville, Fla.] : University of Florida, 2002. http://purl.fcla.edu/fcla/etd/UFE0000614.
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Canepi, Kitti 1955. "Information access through electronic databases for rural public libraries." Thesis, The University of Arizona, 1995. http://hdl.handle.net/10150/278522.
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Electronic databases allow rural libraries to expand information access beyond the limits of their material collection. How are these libraries to know which databases best meet the needs of their clientele? Research done at the onset of this project revealed no previous studies on the ability of databases to answer real questions. In this study, public library patron questions received by the Arizona State Reference Center were searched on ten different databases recommended in William Katz's Introduction to Reference Work, 6th edition, and available through DIALOG Online Services. Given the limitations and exploratory nature of this study, the results indicate that of the databases tested, the set of Books in Print, Magazine Database, ABI/INFORM, PAIS, and GPO Publications could qualify as a set of databases that would enable rural public library staff to find sources for 90% of the patron requests for information not found within the library.
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Gottemukkala, Vibby. "Scalability issues in distributed and parallel databases." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/8176.
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Zagar, Christopher Michael 1965. "Dial-up use of electronic databases by community college students." Thesis, The University of Arizona, 1997. http://hdl.handle.net/10150/278607.
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During the Spring 1997 semester, students at Glendale Community College in Glendale, Arizona were surveyed on their use of dial-up access to electronic databases provided by libraries. In addition, the community college and public libraries in Maricopa County were surveyed to determine which electronic databases they provide by dial-up access. Comparison between these two forms of data collection revealed that a rich variety of electronic databases are available to community college students. Many of the students have the equipment required to take advantage of these resources, combined with a desire to use these resources to increase the flexibility of their options for performing research. The greatest barrier to use was a lack of realization that such resources were available. Community college libraries should advertise access information to make students aware of these options.
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Tahir, Shahzaib. "Privacy preserving search in large encrypted databases." Thesis, City, University of London, 2018. http://openaccess.city.ac.uk/21592/.
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The Cloud is an environment designed for the provision of on-demand resource sharing and data access to remotely located clients and devices. Once data is outsourced to the Cloud, clients tend to lose control of their data thus becoming susceptible to data theft. To mitigate/ reduce the chances of data theft, Cloud service providers employ methods like encrypting data prior to outsourcing it to the Cloud. Although this increases security, it also gives rise to the challenge of searching and sifting through the large amounts of encrypted documents present in the Cloud. This thesis proposes a comprehensive framework that provides Searchable Encryption-as-a-Service (SEaaS) by enabling clients to search for keyword(s) over the encrypted data stored in the Cloud. Searchable Encryption (SE) is a methodology based on recognized cryptographic primitives to enable a client to search over the encrypted Cloud data. This research makes five major contributions to the field of Searchable Encryption: The first contribution is that the thesis proposes novel index-based SE schemes that increase the query effectiveness while being lightweight. To increase query effectiveness this thesis presents schemes that facilitate single-keyword, parallelized disjunctive-keyword (multi-keyword) and fuzzy-keyword searches. The second contribution of this research is the incorporation of probabilistic trapdoors in all the proposed schemes. Probabilistic trapdoors enable the client to hide the search pattern even when the same keyword is searched repeatedly. Hence, this quality allows the client to resist distinguishability attacks and prevents attackers from inferring the search pattern. The third contribution is the enumeration of a "Privacy-preserving" SE scheme by presenting new definitions for SE; i.e., keyword-trapdoor indistinguishability and trapdoor index indistinguishability. The existing security definitions proposed for SE did not take into account the incorporation of probabilistic trapdoors hence they were not readily applicable to our proposed schemes; hence new definitions have been studied. The fourth contribution is the validation that the proposed index-based SE schemes are efficient and can be deployed on to the real-world Cloud offering. The proposed schemes have been implemented and proof-of-concept prototypes have been deployed onto the British Telecommunication's Cloud Server (BTCS). Once deployed onto the BTCS the proof-of-concept prototypes have been tested over a large real-world speech corpus. The fifth contribution of the thesis is the study of a novel homomorphic SE scheme based on probabilistic trapdoors for the provision of higher level of security and privacy. The proposed scheme is constructed on a Partially Homomorphic Encryption Scheme that is lightweight when compared to existing Fully Homomorphic-based SE schemes. The scheme also provides non-repudiation of the transmitted trapdoor while eliminating the need for a centralized data structure, thereby facilitating scalability across Cross-Cloud platforms.
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Wallace, Jeffrey B. "An efficient method for searching compressed genomic databases /." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1455652.
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Thesis (M.S.)--University of Nevada, Reno, 2008."May, 2008." Includes bibliographical references (leaves 38-40). Library also has microfilm. Ann Arbor, Mich. : ProQuest Information and Learning Company, [2008]. 1 microfilm reel ; 35 mm. Online version available on the World Wide Web.
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Gong, Guohui. "On concurrency control in logbased databases." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/8175.
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Chelouche, Evyatar. "Using object-oriented databases for implementation of Interactive Electronic Technical Manuals." Thesis, Monterey, Calif. : Naval Postgraduate School, 1992. http://handle.dtic.mil/100.2/ADA248135.
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Shamsedin, Tekieh Razieh Sadat Information Systems Technology & Management Australian School of Business UNSW. "An XML-based framework for electronic business document integration with relational databases." Publisher:University of New South Wales. Information Systems, Technology & Management, 2009. http://handle.unsw.edu.au/1959.4/43695.
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Small and medium enterprises (SMEs) are becoming increasingly engaged in B2B interactions. The ubiquitousness of the Internet and the quasi-reliance on electronic document exchanges with larger trading partners have fostered this move. The main technical challenge that this brings to SMEs is that of business document integration: they need to exchange business documents with heterogeneous document formats and also integrate these documents with internal information systems. Often they can not afford using expensive, customized and proprietary solutions for document exchange and storage. Rather they need cost-effective approaches designed based on open standards and backed with easy-to-use information systems. In this dissertation, we investigate the problem of business document integration for SMEs following a design science methodology. We propose a framework and conceptual architecture for a business document integration system (BDIS). By studying existing business document formats, we recommend using the GS1 XML standard format as the intermediate format for business documents in BDIS. The GS1 standards are widely used in supply chains and logistics globally. We present an architecture for BDIS consisting of two layers: one for the design of internal information system based on relational databases, capable of storing XML business documents, and the other enabling the exchange of heterogeneous business documents at runtime. For the design layer, we leverage existing XML schema conversion approaches, and extend them, to propose a customized and novel approach for converting GS1 XML document schemas into relational schemas. For the runtime layer, we propose wrappers as architectural components for the conversion of various electronic documents formats into the GS1 XML format. We demonstrate our approach through a case study involving a GS1 XML business document. We have implemented a prototype BDIS. We have evaluated and compared it with existing research and commercial tools for XML to relational schema conversion. The results show that it generates operational and simpler relational schemas for GS1 XML documents. In conclusion, the proposed framework enables SMEs to engage effectively in electronic business.
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Bluder, Steven. "The Usage of Smartphone and PDA Based Electronic Drug Databases Among Pharmacists." The University of Arizona, 2012. http://hdl.handle.net/10150/623587.
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Class of 2012 AbstractSpecific Aims: To assess the use of PDA/smartphone based electronic drug databases among pharmacists as it has changed over time. The working hypothesis is that the use of PDA/Smartphone based electronic drug databases has increased over time. Methods: A systematic review of the literature regarding the usage of PDA/smartphone based electronic drug databases among pharmacists using data that was obtained through literature searches. Main Results: Since 2006, the percentage of pharmacists that are using PDA/smartphone based electronic drug databases has increased. Conclusions: The usage of smartphones and PDA based electronic drug databases has increased among pharmacists since 2006 (p<0.05). Easier and cheaper access to the technology has likely led to the products being available to more pharmacists.
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Bluder, Steven, and Michael Katz. "The Usage of Smartphone and PDA Based Electronic Drug Databases Among Pharmacists." The University of Arizona, 2012. http://hdl.handle.net/10150/614455.
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Class of 2012 AbstractSpecific Aims: To assess the use of PDA/smartphone based electronic drug databases among pharmacists as it has changed over time. The working hypothesis is that the use of PDA/Smartphone based electronic drug databases has increased over time. Methods: A systematic review of the literature regarding the usage of PDA/smartphone based electronic drug databases among pharmacists using data that was obtained through literature searches. Main Results: Since 2006, the percentage of pharmacists that are using PDA/smartphone based electronic drug databases has increased. Conclusions: The usage of smartphones and PDA based electronic drug databases has increased among pharmacists since 2006 (p<0.05). Easier and cheaper access to the technology has likely led to the products being available to more pharmacists.
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Achyutuni, Kiran Jyotsna. "On-line tuning of data placement in parallel databases." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/8124.
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Armstrong, K. "DT : an iconic graphical user interface for object-oriented databases." Thesis, Lancaster University, 1999. http://eprints.lancs.ac.uk/11681/.
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Pira, Rahim S. "Supporting asynchronous telemedicine : electronic mail vs. the world wide web vs. replicated databases /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0007/MQ42422.pdf.
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Zobair, Hamza A. "A method for finding common attributes in hetrogenous DoD databases." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2004. http://library.nps.navy.mil/uhtbin/hyperion/04Jun%5FZobair.pdf.
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Hassan, Diman. "A tree-based measure for hierarchical data in mixed databases." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/34652/.
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The structure of the data in a mixed database can be a barrier when clustering that database into meaningful groups. A hierarchically structured database necessitates efficient distance measures and clustering algorithms to locate similarities between data objects. Therefore, existing literature proposes hierarchical distance measures to measure the similarities between the records in hierarchical databases. The main contribution of this research is to create and test a new distance measure for large hierarchical databases consisting of mixed data types and attributes, based on an existing tree-based (hierarchical) distance metric, the pq-gram distance metric. Several aims and objectives were pursued to fill a number of gaps in the current body of knowledge. One of these goals was to verify the validity of the pq-gram distance metric when applied to different data sets, and to compare and combine it with a number of different distance measures to demonstrate its usefulness across large mixed databases. To achieve this, further work focused on exploring how to exploit the existing method as a measure of hierarchical data attributes in mixed data sets, and to ascertain whether the new method would produce better results with large mixed databases. For evaluation purposes, the pq-gram metric was applied to The Health Improvement Network (THIN) database to determine if it could identify similarities between the records in the database. After this, it was applied to mixed data to examine different distance measures, which include non-hierarchical and other hierarchical measures, and to combine them to create a Combined Distance Function (CDF). The CDF improved the results when applied to different data sets, such as the hierarchical National Bureau of Economic Research of United States (NBER US) Patent data set and the mixed (THIN) data set. The CDF was then modified to create a New-CDF, which used only the hierarchical pq-gram metric to measure the hierarchical attributes in the mixed data set. The New-CDF worked well, finding the most similar data records when applied to the THIN data set, and grouping them in one cluster using the Balanced Iterative Reducing and Clustering using Hierarchies (BIRCH) clustering algorithm. The quality of the clusters was explored using two internal validation indices, Silhouette and C-Index, where the values showed good compactness and quality of the clusters obtained using the new method.
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Chiu, Lin. "A methodology for designing concurrency control schemes in distributed databases /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487584612163117.
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Gebreslassie, Teklebrhan Woldearegay. "E-Business Strategy to Adopt Electronic Banking Services in Ethiopia." ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/4366.
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E-banking services in Ethiopia are increasing among low-income populations; however, with over 53 million mobile service users countrywide, more than 85% of the population still lacks access to banking services. A single case study was used to explore e-business strategies that bank managers use to promote the adoption of electronic banking services to the unbanked population in Ethiopia. The extended resource-based view of strategy served as the conceptual framework for this study. Data were collected from interviews with 12 experienced bank managers from leading commercial bank in Ethiopia. Data were analyzed using coding techniques and word clustering, with the help of qualitative data analysis software. After member checking and methodological triangulation, data were sorted into 5 themes including ensuring leadership, creating accessibility, fostering customers' acceptance, leveraging unique features and organizational resources, and building an e-banking ecosystem. The result showed that bank managers need to develop a customer-centric organizational posture and they should focus to build e-banking ecosystem inside and outside the country so that they can realize their vision to become global competitors. The findings from the study may contribute to positive social change for the unbanked communities in Ethiopia by informing bank managers options of e-banking adoption strategies thereby improve the convenience and accessibility of banking services.
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Nguyen, Minh Quoc. "Toward accurate and efficient outlier detection in high dimensional and large data sets." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34657.
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An efficient method to compute local density-based outliers in high dimensional data was proposed. In our work, we have shown that this type of outlier is present even in any subset of the dataset. This property is used to partition the data set into random subsets to compute the outliers locally. The outliers are then combined from different subsets. Therefore, the local density-based outliers can be computed efficiently. Another challenge in outlier detection in high dimensional data is that the outliers are often suppressed when the majority of dimensions do not exhibit outliers. The contribution of this work is to introduce a filtering method whereby outlier scores are computed in sub-dimensions. The low sub-dimensional scores are filtered out and the high scores are aggregated into the final score. This aggregation with filtering eliminates the effect of accumulating delta deviations in multiple dimensions. Therefore, the outliers are identified correctly. In some cases, the set of outliers that form micro patterns are more interesting than individual outliers. These micro patterns are considered anomalous with respect to the dominant patterns in the dataset. In the area of anomalous pattern detection, there are two challenges. The first challenge is that the anomalous patterns are often overlooked by the dominant patterns using the existing clustering techniques. A common approach is to cluster the dataset using the k-nearest neighbor algorithm. The contribution of this work is to introduce the adaptive nearest neighbor and the concept of dual-neighbor to detect micro patterns more accurately. The next challenge is to compute the anomalous patterns very fast. Our contribution is to compute the patterns based on the correlation between the attributes. The correlation implies that the data can be partitioned into groups based on each attribute to learn the candidate patterns within the groups. Thus, a feature-based method is developed that can compute these patterns efficiently.
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De, Villiers Edward. "Automatic alignment and error detection for phonetic transcriptions in the African speech technology project databases." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/2311.
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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2006.The African Speech Technology (AST) project ran from 2000 to 2004 and involved collecting speech data for five South African languages, transcribing the data and building automatic speech recognition systems in these languages. The work described here form part of this project and involved implementing methods for automatic boundary placement in manually labelled files and for determining errors made by transcribers during the labelling process.
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Kós, José Ripper. "Urban spaces shaped by past cultures : historical representation through electronic 3D models and databases." Thesis, University of Strathclyde, 2003. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21518.
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Digital tools have been increasingly used, in the last decades, for the study and representation of the city history. As the available instruments develop and the researchersb ecome more familiar with them, their use turns out to be more effective and provides richer results. This study aims to explore the use of information technology, particularly 3D models, for the city history research. When this study was elaborated, few initiatives effectivelly applied those new tools to convey the history of the city. A smaller number of published scientific enterprises investigated that operation. Therefore, the study is structured mainly on the analysis of some precedents based on those tools, together with others selected for applying creatively traditional methods. These analyses also raise questionings on related issues such as historical narratives, traditional methods of historical graphic representation or other digital representation modes. The examination of those subjects constitutes the thesis' theoretical part. The conclusion is presented in the form of a digital alternative for the representation of the city history. The tool developed as a prototype is grounded on 3D models representing different periods of the city linked to a database of a great diversity of historical documents. Thus, the city history is accessed through images of the significant sites from the 3D models. The prototype development is based on the assumptions that this process of retrieving historical information related to city spaces facilitates the understanding of the past culture. Furthermore, when the readers associate the space they know in the city to the historical information, they understand better the past culture that shaped it, strengthen their identity and intensify the relationship to the place they dwell in.
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Papin, Annette Richelle. "Using educational databases in the form of electronic portfolios: A method in coaching athletics." CSUSB ScholarWorks, 1998. https://scholarworks.lib.csusb.edu/etd-project/1673.
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Owei, Vesper T. "Framework for a conceptual query language for capturing relationship semantics in databases." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/30684.
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Haddix, Frank Furman. "Alternating parallelism and the stabilization of distributed systems /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
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Zhou, Wanlei, and mikewood@deakin edu au. "Building reliable distributed systems." Deakin University. School of Computing and Mathematics, 2001. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051017.160921.
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Mason, Patricia Lynn. "Diffusion of Electronic Health Records in Rural Primary Care Clinics." ScholarWorks, 2015. https://scholarworks.waldenu.edu/dissertations/466.
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By the end of 2015, Medicare-eligible physicians at primary care practices (PCP) who do not use an electronic health record (EHR) system will incur stiff penalties if they fail to meet the deadline for using EHRs. Yet, less than 30% of rural primary clinics have fully functional EHR systems. The purpose of this phenomenology study was to explore rural primary care physicians and physician assistants' experiences regarding overcoming barriers to implementing EHRs. Complex adaptive systems formed the conceptual framework for this study. Data were collected through face-to-face interviews with a purposeful sample of 21 physicians and physician assistants across 2 rural PCPs in the southeastern region of Missouri. Participant perceptions were elicited regarding overcoming barriers to implementing EHRs under the American Recovery and Reinvestment Act, Health Information Technology for Economic and Clinical Health, and the Patient Protection and Affordable Care Act legislation. Interview questions were transcribed and processed through qualitative software to discern themes of how rural PCP physicians and physician assistants might overcome barriers to implementing electronic health records. Through the exploration of the narrative segments, 4 emergent themes were common among the participants: (a) limited finances to support EHRs, (b) health information exchange issues, (c) lack of business education, and (d) lack of transformation at rural medical practices. The implications for positive social change include the potential implementation of EHRs particularly in physician practices in rural communities, which could provide cost-efficient health care services for those communities and a more sustainable future at primary care practices.
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Fedyukin, Alexander. "Keeping track of network flows an inexpensive and flexible solution /." Ohio : Ohio University, 2005. http://www.ohiolink.edu/etd/view.cgi?ohiou1133549806.
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Xu, Dongjie. "Harmonious screen interface design principles from Chinese calligraphy." Thesis, University of Central Lancashire, 2010. http://clok.uclan.ac.uk/1521/.
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Harmony is a major theme in Chinese culture. It is reflected in many forms, e.g. painting and garden design. However, calligraphy gives a straight forward insight into harmony in two dimensions. The main hypothesis was that the principles for building a harmonious calligraphic character could be converted from holistic to deductive and computable ones. These could then be applied to the design of harmonious screen interfaces, which would give visual pleasure. The first aim was to investigate and discover the quantifiable features of harmony in Chinese regular script calligraphy. Calligraphy has been associated in China with harmony and elegance for over 1500 years. There are features that are commonly accepted to establish harmony which can be quantified. However, the principles of Chinese calligraphy are embedded within Chinese culture. Direct translation does not convey the meaning. An extensive study was made of the literature on Chinese calligraphy and a practical exploration of characters was made. This resulted in a small number of principles which were needed to be satisfied for the character to appear harmonious. These were tested on several groups of participants. These principles were then converted into a mathematical form for Chinese regular script calligraphy, and for application to harmonious screen interface design. The mathematical forms were then tested on both Chinese regular script calligraphy and also on interface designs with groups of participants. Finally, an application for comparing harmony in Chinese calligraphic characters and interface designs was created. The “Harmony” application can be used to calculate how a Chinese calligraphic character or an interface design satisfies the principles of harmony and it can give an indication of how harmonious they are.
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Modica, Giovanni. "A framework for automatic ontology generation from autonomous web applications." Master's thesis, Mississippi State : Mississippi State University, 2002. http://library.msstate.edu/etd/show.asp?etd=etd-09032002-165210.
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Zuo, Landong. "A semantic and agent-based approach to support information retrieval, interoperability and multi-lateral viewpoints for heterogeneous environmental databases." Thesis, Queen Mary, University of London, 2006. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1770.
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Data stored in individual autonomous databases often needs to be combined and interrelated. For example, in the Inland Water (IW) environment monitoring domain, the spatial and temporal variation of measurements of different water quality indicators stored in different databases are of interest. Data from multiple data sources is more complex to combine when there is a lack of metadata in a computation forin and when the syntax and semantics of the stored data models are heterogeneous. The main types of information retrieval (IR) requirements are query transparency and data harmonisation for data interoperability and support for multiple user views. A combined Semantic Web based and Agent based distributed system framework has been developed to support the above IR requirements. It has been implemented using the Jena ontology and JADE agent toolkits. The semantic part supports the interoperability of autonomous data sources by merging their intensional data, using a Global-As-View or GAV approach, into a global semantic model, represented in DAML+OIL and in OWL. This is used to mediate between different local database views. The agent part provides the semantic services to import, align and parse semantic metadata instances, to support data mediation and to reason about data mappings during alignment. The framework has applied to support information retrieval, interoperability and multi-lateral viewpoints for four European environmental agency databases. An extended GAV approach has been developed and applied to handle queries that can be reformulated over multiple user views of the stored data. This allows users to retrieve data in a conceptualisation that is better suited to them rather than to have to understand the entire detailed global view conceptualisation. User viewpoints are derived from the global ontology or existing viewpoints of it. This has the advantage that it reduces the number of potential conceptualisations and their associated mappings to be more computationally manageable. Whereas an ad hoc framework based upon conventional distributed programming language and a rule framework could be used to support user views and adaptation to user views, a more formal framework has the benefit in that it can support reasoning about the consistency, equivalence, containment and conflict resolution when traversing data models. A preliminary formulation of the formal model has been undertaken and is based upon extending a Datalog type algebra with hierarchical, attribute and instance value operators. These operators can be applied to support compositional mapping and consistency checking of data views. The multiple viewpoint system was implemented as a Java-based application consisting of two sub-systems, one for viewpoint adaptation and management, the other for query processing and query result adjustment.
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Molyneux, Richard. "Hyperset approach to semi-structured databases and the experimental implementation of the query language Delta." Thesis, University of Liverpool, 2009. http://livrepository.liverpool.ac.uk/1109/.
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This thesis presents practical suggestions towards the implementation of the hyperset approach to semi-structured databases and the associated query language Delta. This work can be characterised as part of a top-down approach to semi-structured databases, from theory to practice. The main original part of this work consisted in implementation of the hyperset Delta query language to semi-structured databases, including worked example queries. In fact, the goal was to demonstrate the practical details of this approach and language. The required development of an extended, practical version of the language based on the existing theoretical version, and the corresponding operational semantics. Here we present detailed description of the most essential steps of the implementation. Another crucial problem for this approach was to demonstrate how to deal in reality with the concept of the equality relation between (hyper)sets, which is computationally realised by the bisimulation relation. In fact, this expensive procedure, especially in the case of distributed semi-structured data, required some additional theoretical considerations and practical suggestions for efficient implementation. To this end the 'local/global' strategy for computing the bisimulation relation over distributed semi-structured data was developed and its efficiency was experimentally confirmed. Finally, the XML-WDB format for representing any distributed WDB as system of set equations was developed so that arbitrary XML elements can participate and, hence, queried by the -language. The query system with the syntax of the language and several example queries from this thesis is available online at http://www.csc.liv.ac.uk/˜molyneux/t/
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Lagier, Jennifer. "Measuring Usage and Usability of Online Databases at Hartnell College: An Evaluation of Selected Electronic Resources." NSUWorks, 2002. http://nsuworks.nova.edu/gscis_etd/654.
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The purpose of this study was to collect and examine statistical and survey data in an effort to determine whether three electronic resources made available by the Hartnell College library are actually being used by the target population for whom they were acquired. The second goal was to significantly advance understanding of how selected online database products collect and report usage statistics, how usable students find existing electronic resources, and whether usage levels justify the costs of renewing online resource subscriptions.
The major problems examined within the study include a lack of common measurement standards and the absence of a universally agreed upon definition of what constitutes usage. Additional problems included a lack of comparative data to evaluate similar electronic resources and the absence of any prior analysis of database use at Hartnell College. Data for this study was obtained from two sources: server log files and user surveys. Each month, log files containing electronic resource usage statistics were downloaded, analyzed and stored in spreadsheets by the Hartnell College Systems Librarian. This information was supplemented by data collected during a usability study and user satisfaction study conducted in spring 2002. Test participants were drawn from two Hartnell College classes: one section of English 253 and one section of English 10l.
There was a total of 25 participants. Findings from the completed study indicated EBSCOhost and Pro Quest databases were used more than CQ Researcher, with EBSCOhost receiving the most use. Despite this finding, usability and user satisfaction surveys indicated that students participating in this study found CQ Researcher the most effective tool in helping them perform directed research. Students also rated CQ Researcher highest in user satisfaction, followed by EBSCOhost and then ProQuest. The factual statistical data derived from this study will assist decision-makers at Hartnell College as they prepare the 2003-2004 Library materials budget. An awareness of usability and user satisfaction ratings of existing electronic resources by students have resulted in planned revisions to existing bibliographic instruction courses.
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Toprak, Serkan. "Data Mining For Rule Discovery In Relational Databases." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605356/index.pdf.
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Data is mostly stored in relational databases today. However, most data mining algorithms are not capable of working on data stored in relational databases directly. Instead they require a preprocessing step for transforming relational data into algorithm specified form. Moreover, several data mining algorithms provide solutions for single relations only. Therefore, valuable hidden knowledge involving multiple relations remains undiscovered. In this thesis, an implementation is developed for discovering multi-relational association rules in relational databases. The implementation is based on a framework providing a representation of patterns in relational databases, refinement methods of patterns, and primitives for obtaining necessary record counts from database to calculate measures for patterns. The framework exploits meta-data of relational databases for pruning search space of patterns. The implementation extends the
framework by employing Apriori algorithm for further pruning the search space and discovering relational recursive patterns. Apriori algorithm is used for finding large itemsets of tables, which are used to refine patterns. Apriori algorithm is modified by changing support calculation method for itemsets. A method
for determining recursive relations is described and a solution is
provided for handling recursive patterns using aliases. Additionally, continuous attributes of tables are discretized utilizing equal-depth partitioning. The implementation is
tested with gene localization prediction task of KDD Cup 2001 and
results are compared to those of the winner approach.
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Patil, Manjiri Pandurang. "Schema exportation and integration for achieving information sharing in a transnational setting." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0009360.
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Weagraff, Joseph B. "Health Care Leaders' Experiences of Electronic Medical Record Adoption and Use." ScholarWorks, 2016. https://scholarworks.waldenu.edu/dissertations/3216.
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Adoption of electronic medical record (EMR) technology systems of meaningful use has been slow despite the mandate by the U.S. government. The purpose of this single case study was to explore strategies used by health care leaders to implement EMR technology systems of meaningful use to take advantage of federal incentive payments. Diffusion of innovation theory provided the conceptual framework for the study. Semistructured interviews were conducted with 6 health care leaders from a military installation in the Southeast United States. Data were analyzed using software, coding, and inductive analyses. The 3 prominent themes were patient, provider, and champion. Alerts from an EMR technology system can increase providers' awareness and improve patient safety. Providers' involvement in every phase of an EMR system's implementation can improve the adoption rate. Champions play a critical role in successful adoption and implementation of EMR systems. Results of this study may assist health care leaders in implementing EMR systems to take advantage of federal incentive payments. Implications for positive social change include enhanced delivery of safe, high-quality health care.
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Klaib, Ahmad. "Exact string matching algorithms for searching DNA and protein sequences and searching chemical databases." Thesis, University of Huddersfield, 2014. http://eprints.hud.ac.uk/id/eprint/24266/.
Full textAbstract:
The enormous quantities of biological and chemical files and databases are likely to grow year on year, consequently giving rise to the need to develop string-matching algorithms capable of minimizing the searching response time. Being aware of this need, this thesis aims to develop string matching algorithms to search biological sequences and chemical structures by studying exact string matching algorithms in detail. As a result, this research developed a new classification of string matching algorithms containing eight categories according to the pre-processing function of algorithms and proposed five new string matching algorithms; BRBMH, BRQS, Odd and Even algorithm (OE), Random String Matching algorithm (RSMA) and Skip Shift New algorithm (SSN). The main purpose behind the proposed algorithms is to reduce the searching response time and the total number of comparisons. They are tested by comparing them with four well- known standard algorithms, Boyer Moore Horspool (BMH), Quick Search (QS), TVSBS and BRFS. This research applied all of the algorithms to sample data files by implementing three types of tests. The number of comparison tests showed a substantial difference in the number of comparisons our algorithms use compared to the non-hybrid algorithms such as QS and BMH. In addition, the tests showed considerable difference between our algorithms and other hybrid algorithm such as TVSBS and BRFS. For instance, the average elapsed search time tests showed that our algorithms presented better average elapsed search time than the BRFS, TVSBS, QS and BMH algorithms, while the average number of tests showed better number of attempts compared to BMH, QS, TVSBS and BRFS algorithms. A new contribution has been added by this research by using the fastest proposed algorithm, the SSN algorithm, to develop a chemical structure searching toolkit to search chemical structures in our local database. The new algorithms were paralleled using OpenMP and MPI parallel models and tested at the University of Science Malaysia (USM) on a Stealth Cluster with different number of threads and processors to improve the speed of searching pattern in the given text which, as we believe, is another contribution.
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Oduro, Anane Rita. "Use of Electronic Databases by Final year Students of the University Of Ghana College Of Health Sciences." Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/55837.
Full textAbstract:
Modern trends in medical and biomedical sciences education show the use of electronic databases as an invaluable tool because it provides users with current and up to-date information. It is due to this fact that the University of Ghana subscribes to a host of these databases. In spite of the usefulness of electronic databases, students of the University of Ghana College of Health Sciences do not make full use of these resources. This situation raised the question: How are final year students at the University of Ghana College of Health Sciences using electronic databases? Sub-questions included:
• What has been reported on the use of electronic databases by students in academic contexts?
• What are final year students’ at the University of Ghana College of Health Sciences level of awareness of electronic databases and other electronic information resources?
• Which electronic databases are used by final year students at the University of Ghana College of Health Sciences?
• Which challenges impact on final year students at the University of Ghana College of Health Sciences as they use electronic databases?
The study employed a quantitative research design using a self-administered questionnaire among final year students of the College of Health Sciences, University of Ghana in October 2015. The participants were 242 final year students (under-graduate final year and post-graduate final year).
The study revealed that 189/242 (78.1%) of the final year students were aware of the electronic databases to which the College of Health Sciences Library subscribes. HINARI, AJOL, EBSCOHOST and ScienceDirect were the most used electronic databases. It was also found that the use of electronic databases mainly improved accessibility to information, improved availability of current information and was perceived by students to enhance the quality of assignments and research. However, lack of guidance, lack of appropriate search skills, and internet connectivity problems were the major reasons that impeded the use of electronic databases among the final year students of the College of Health Sciences. Recommendations were made for theory and practice, as well as further research.Mini Dissertation(MIT)--University of Pretoria, 2016.
Carnegie Corporation New York and University of Pretoria
Information Science
MIT
Unrestricted
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Wing, Kevin. "Improving the measurement and detection of serious adverse drug reactions in databases of stored electronic health records." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2016. http://researchonline.lshtm.ac.uk/2545199/.
Full textAbstract:
Background: Adverse drug reactions are responsible for a significant proportion of hospitalisations. This PhD aimed to develop and optimise methods for detecting serious adverse drug reactions in databases of electronic health records for use in pharmacoepidemiology and genetic epidemiology, with a focus on cholestatic liver injury. Methods: A systematic review was performed before developing a multiple database source (“multisource”) algorithm for identifying cholestatic liver injury. Multisource algorithm case status was used to guide the development of another algorithm using data from a standard UK Clinical Practice Research Datalink (CPRD) record only (the CPRD algorithm). Testing of the CPRD algorithm was performed within a cohort analysis of an established cause of the injury (flucloxacillin), before carrying out a casecontrol study investigating a number of putative associations (drug exposures carbamazepine, celecoxib, duloxetine, ramipril and risperidone). Results: The majority of reviewed studies lacked a reproducible case definition, and case assignment generally required information external to database records. Secondary care (HES) data provided little additional information than that found in primary care (CPRD), meaning that the CPRD algorithm had a very good ability to discriminate between multisource algorithm cases statuses (ROC area under the curve 0.95). The flucloxacillin 45-day risk estimate obtained from the cohort study using the highest specificity CPRD algorithm (6.15 per 100 000 users, 95% CI 4.61 – 8.04) was very similar to previous studies. Celecoxib and risperidone were associated with cholestatic liver injury (celecoxib multivariablemultivariable RR recent vs. current users low specificity CPRD algorithm 1.89, 95% CI 1.11 – 3.22, risperidone multivariablemultivariable RR high specificity CPRD algorithm 2.59, 95% CI 1.41 – 4.75). Conclusions: The CPRD algorithm detected similar flucloxacillin effects as (1) the multisource algorithm and (2) previous studies. Associations with risperidone and celecoxib were also detected. Algorithm characteristics that could facilitate (1) pharmacovigilance and (2) recruitment to genetic association studies include the ability to (a) detect cases without using information external to the EHR and (b) apply varying levels of specificity and sensitivity.
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Shanneb, Abdelsalam Mohamed Computer Science & Engineering Faculty of Engineering UNSW. "Concurrency control for composite objects." Awarded by:University of New South Wales. School of Computer Science and Engineering, 2006. http://handle.unsw.edu.au/1959.4/24286.
Full textAbstract:
An essential motivation behind concurrent object-oriented systems is to exploit the software modularity and reuse potential of object-oriented features in the development of concurrent systems. However, the marriage between the two disciplines has not been a happy one. In this work we propose a model that reduces the problems associated with introducing concurrency into object-oriented languages. We explore techniques for reasoning about synchronisation requirements in composite object systems operating in a concurrent environment. Furthermore we investigate safe locking strategies, where the locks may be distributed over the components of the system and identify conditions for such locks to be non-redundant. Through the recognition of a Galois connection, we achieve an elegant mathematical characterisation of the lock-distribution problem, which allows us to identify efficient strategies and tools for assisting developers with lock selection.
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Drill, Valerie Gerene. "A Multisite Hospital's Transition to an Interoperable Electronic Health Records System." ScholarWorks, 2016. https://scholarworks.waldenu.edu/dissertations/3293.
Full textAbstract:
The health care industry is transforming into an industry that requires health information technology, yet many health care organizations are reluctant to implement new technology. The purpose of this case study was to explore strategies that led to a successful transition from an older electronic health record (EHR) system to a compliant EHR system at a multisite hospital system (MHS). The study included face-to-face and phone interviews with 12 managers who worked on the transition of an MHS's EHR system in the Pacific Northwest region of the United States. The technology acceptance model was used to frame the study. Audio recordings with these managers were transcribed and analyzed along with interview notes and publicly available documents to identify themes regarding strategies used by managers to successfully upgrade to a compliant EHR system at an MHS. Three major themes emerged: hybrid implementation strategy, training strategy, and social pressure strategy. Results may be used to facilitate the adoption of information technology systems in any industry. Results may directly benefit other MHSs by facilitating successful EHR system transitions. Implications for social change include improved care coordination, reductions in duplicated medical procedures, and more timely and relevant tests for patients through the full use of EHRs.
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Noll, Hannah M. "Where Google Scholar Stands on Art: An Evaluation of Content Coverage in Online Databases." Thesis, School of Information and Library Science, 2008. http://hdl.handle.net/1901/499.
Full textAbstract:
This study evaluates the content coverage of Google Scholar and three commercial databases (Arts & Humanities Citation Index, Bibliography of the History of Art and Art Full Text/Art Index Retrospective) on the subject of art history. Each database is tested using a bibliography method and evaluated based on Péter Jacsó’s scope criteria for online databases. Of the 472 articles tested, Google Scholar indexed the smallest number of citations (35%), outshone by the Arts & Humanities Citation Index which covered 73% of the test set. This content evaluation also examines specific aspects of coverage to find that in comparison to the other databases, Google Scholar provides consistent coverage over the time range tested (1975-2008) and considerable access to article abstracts (56%). Google Scholar failed, however, to fully index the most frequently cited art periodical in the test set, the Artforum International. Finally, Google Scholar’s total citation count is inflated by a significant percentage (23%) of articles which include duplicate, triplicate or multiple versions of the same record.
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Cheng, Grace Y. T., and n/a. "Measuring electronic information systems: the use of the information behaviour model." University of Canberra. Information Management and Tourism, 2002. http://erl.canberra.edu.au./public/adt-AUC20050628.150806.
Full textAbstract:
This study focused on measuring the importance and contribution of information obtained from the
library, particularly electronic information services (EIS), to success in solving clinical problems in
hospitals. Three research questions with three main hypotheses were advanced and tested on clinicians
in 44 hospitals in Hong Kong. The findings were tested against the framework from Wilson's (1996)
existing general information behaviour model, from which a new extended model for clinicians was
built. Measures of EIS were then derived from the new model.
The research was broadly divided into a series of five studies in two stages: nominal group,
quantitative survey, and interviews in the first stage, and randomized controlled study as well as the
analyses of statistical data and computer transaction logs in the second stage. The key results in Stage I
led to the studies in Stage 11. The randomized controlled study in Stage 11 attempted to reduce the
barriers identified in the information environment, with a view to test the results of an educational
intervention, and to confirm that the hypotheses were true given reduced barriers and the presence of
enabling conditions. The effects of the interventions in this experimental study were validated and
verified by statistical data and transaction logs.
Corroborative evidence from the two-stage studies showed that the three main inter-connected
hypotheses were supported: success in problem-solving is related to the information sources used; user
satisfaction is related to success in problem-solving; and EIS use is an indicator of user satisfaction.
EIS use is determined by a number of factors: the preference for EIS, the use of the library, the skills
and knowledge in searching, the profession of the user and the characteristics of the work environment.
Educational intervention was found to improve success in problem-solving, the attitudes, skills and
knowledge in searching, the satisfaction with and use of EIS, and is an important enabling condition.
The research rejected part of the first hypothesis posed that success in problem-solving is related to
clinical question posed and suggests that further research is needed in this area.
The study supported the extension of the general model to clinical information needs and
behaviours and found new relationships. The study found an additional determinant of EIS
satisfaction, the satisfaction with the information obtained. EIS satisfaction would not be changed by
educational intervention alone if the information obtained was not satisfactory. On the other hand,
education can improve EIS satisfaction regardless of whether the problem has been solved. Of critical
importance is the time factor in determining the use (or non-use) of EIS. There is new evidence that
the awareness of the user of an answer in literature is a determining factor for active searching.
Borrowing the concept of opportunity cost from economic theory, the researcher relates it with the
differing levels of self-efficacy and postulates a model for planning EIS and related library services.
From the new extended model of information behaviour, sixteen main measures or indicators
were tested on a proposed framework in developing performance measures to diagnose information
behaviours and predict EIS use, satisfaction and success in problem-solving. In measuring EIS, the
researcher suggested the holistic approach in assessing traditional (non-electronic) library and
information services as part of information behaviours of clinicians. The study pointed to the
imbalance between self-efficacy and the actual skills and knowledge of users in their searching
mentality and activities and the implication for library practice. Qualitative aspects that require further
research on measurement were suggested.
The study has important ramifications for theory and practice for the information professional.
The new extended model of information behaviour for clinicians establishes deterministic relationships
that help explain why an information search is pursued actively, continuously, or not at all. Measures
that have been derived from these relationships can help diagnose and predict information behaviours.
The study highlights the flexibility and utility of the general model of information behaviour. Also,
this is the first time that such a methodological approach has been adopted to derive EIS measures.
The application of the randomized controlled study methodology in information science was proven to
be feasible and yielded definitive results. The researcher proposes that further development of
information behaviour model should incorporate the element of knowledge generation process in an
organization.
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Ngunyu, Daniel Kanyi. "Strategies for Applying Electronic Health Records to Achieve Cost Saving Benefits." ScholarWorks, 2018. https://scholarworks.waldenu.edu/dissertations/5236.
Full textAbstract:
The American Recovery and Reinvestment Act (ARRA) of 2009 authorized the distribution of about $30 billion incentive funds to accelerate electronic health record (EHR) applications to improve the quality of care, safety, privacy, care coordination, and patients' involvement in healthcare. EHR use has the potential of saving $731 in costs for hospitals per patient admission; however, most hospitals are not applying EHR to reach the level at which cost savings are possible. The purpose of this single case study was to explore strategies that IT leaders in hospitals can use to apply EHR to achieve the cost saving benefits. The participants were IT leaders and EHR super users at a large hospital in Texas with successful experience in applying EHR. Information systems success model formed the conceptual framework for the study. I conducted face-to-face interviews and analyzed organizational documents. I used qualitative textual data analysis method to identify themes. Five themes emerged from this study, which are ensuring information quality, ensuring system quality, assuring service quality, promoting usability, and maximizing net benefits of the EHR system. The findings of this study included four strategies to apply EHR; these strategies include engaging training staff, documenting accurately and in a timely manner, protecting patient data, and enforcing organizational best practice policies to maximize reimbursement and cost savings. The findings of this study could contribute to positive social change for the communities because EHR successful application includes lower cost for hospitals that may lead to the provision of affordable care to more low-income patients.
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San, Jose Rhoda Lynn Atienza. "Educating Nurses on Workflow Changes from Electronic Health Record Adoption." ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/3321.
Full textAbstract:
Workflow issues related to adoption of the electronic health record (EHR) has led to unsafe workarounds, decreased productivity, inefficient clinical documentation and slow rates of EHR adoption. The problem addressed in this quality improvement project was nurses' lack of knowledge about workflow changes due to EHR adoption. The purpose of this project was to identify changes in workflow and to develop an educational module to communicate the changes. This project was guided by both the ADDIE model (analysis, design, development, implementation, and evaluation) and the diffusion of innovations theory. Five stages were involved: process mapping, cognitive walkthrough, eLearning module development, pilot study, and evaluation. The process maps and cognitive walkthrough revealed significant workflow changes particularly in clinical practice guidelines, emergency department treatment plan, and the interdisciplinary care plan. The eLearning module was developed to describe workflow changes using gamification, scenario-based learning, and EHR simulation. The 14-item course evaluation included a 6-point Likert scale and closed- and open-ended questions. A purposive sample of nurses (N = 30) from the emergency department and inpatient care areas were invited to complete the eLearning module and course evaluation. Data were collected until saturation was achieved (n = 15). Descriptive statistics revealed the participants' positive learning experience. This quality improvement project is expected to contribute to positive social change by facilitating the effective use of the new EHR which can improve the quality of patient care, promote patient safety, reduce healthcare costs, and improve patient outcomes.
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Jia, Hao. "A web application for Medasolution Healthcare Company customer service system." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2612.
Full textAbstract:
Medasolution is a virtual company designed by the author to handle Medicare insurance business. The web application (which uses ASP.net and SQL Server 2000) facilitates communication between Medasolution and all its clients: members, employers, brokers, and medicare providers through separate web pages based on their category levels. The program incorporates security so that it follows government privacy rules regarding client information.
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Adams, Sharon L. "Nurses Knowledge, Skills, and Attitude Toward Electronic Health Records (EHR)." ScholarWorks, 2015. https://scholarworks.waldenu.edu/dissertations/875.
Full textAbstract:
Information technology (IT) has been rapidly integrated into the healthcare industry, including nursing, and has the ability to reduce errors, cut cost, and enhance patient care. However, approximately 45% of the current nurse workforce lacks adequate training in computer skills, which may hinder the adoption of health-related IT in the workplace. Characteristics of Rogers's diffusion of innovation (relative advantage, compatibility, complexity, trialability, and observability) guided this project. This project was conducted to address the problem of IT adoption on a local level and was designed to assess whether simulation training on a generic electronic health record (EHR) system would improve the knowledge, skill, and attitude of nurses with little or no experience with EHR. A convenience sample of nurses (n = 13) unfamiliar with EHR was obtained by posting flyers in long-term care or home health agencies. The nurses completed the P.A.T.C.H. assessment scale v. 3 (2011) before and after participating in the one-time simulation training on EHR. Scores on the P.A.T.C.H. were calculated according to the established scoring system and revealed a positive increase nurses' attitude and self-efficacy toward the EHR system. Posttest scores yielded an increase ranging from 0.5 to 5 points from pretest scores, with an average pretest score of 54.23 on a scale of 0-100. The results of this project are consistent with the literature and current research and illustrate the importance of addressing the need for interactive training. This project contributes to social change in practice by enhancing the awareness of EHR in nurses who are new users of IT and promoting the adoption of technology in healthcare.
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Abimbola, Isaiah Gbenga. "Assessing Value Added in the Use of Electronic Medical Records in Nigeria." Thesis, Walden University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3702058.
Full textAbstract:
Electronic medical records (EMRs) or electronic health records have been in use for years in hospitals around the world as a time-saving system for patient record keeping. Despite its widespread use, some physicians disagree with the assertion that EMRs save time. The purpose of this study was to explore whether any time saved with the use of the EMR system was actually devoted by doctors to patient-care and thereby to improved patient-care efficiency. The conceptual support for this study was predicated employing the task-technology fit theory. Task-technology theorists argue that information technology is likely to have a positive impact in individual performance and production timeliness if its capabilities match the task that the user must perform. The research questions addressed the use of an EMR system as a time-saving device, its impact on the quality of patient-care, and how it has influenced patients? access to healthcare in Nigeria. In this research, a comparative qualitative case study was conducted involving 2 hospitals in Nigeria, one using EMRs and another using paper-based manual entry. A purposeful sample of 12 patients and 12 physicians from each hospital was interviewed. Data were compiled and organized using Nvivo 10 software for content analysis. Categories and recurring themes were identified from the data. The findings revealed that reduced patients? registration processing time gave EMR-using doctors more time with their patients, resulting in better patient care. These experiences were in stark contrast to the experiences of doctors who used paper-based manual entry. This study supports positive social change by informing decision makers that time saved by implementing EMR keeping may encourage doctors to spend more time with their patients, thus improving the general quality of healthcare in Nigeria.